The separation of particles from a suspension by passage through a filter with very fine pores. In ultrafiltration the separation is accomplished by convective transport; in DIALYSIS separation relies instead upon differential diffusion. Ultrafiltration occurs naturally and is a laboratory procedure. Artificial ultrafiltration of the blood is referred to as HEMOFILTRATION or HEMODIAFILTRATION (if combined with HEMODIALYSIS).
Solutions prepared for exchange across a semipermeable membrane of solutes below a molecular size determined by the cutoff threshold of the membrane material.
A membrane of squamous EPITHELIAL CELLS, the mesothelial cells, covered by apical MICROVILLI that allow rapid absorption of fluid and particles in the PERITONEAL CAVITY. The peritoneum is divided into parietal and visceral components. The parietal peritoneum covers the inside of the ABDOMINAL WALL. The visceral peritoneum covers the intraperitoneal organs. The double-layered peritoneum forms the MESENTERY that suspends these organs from the abdominal wall.
Extracorporeal ULTRAFILTRATION technique without HEMODIALYSIS for treatment of fluid overload and electrolyte disturbances affecting renal, cardiac, or pulmonary function.
The combination of hemodialysis and hemofiltration either simultaneously or sequentially. Convective transport (hemofiltration) may be better for removal of larger molecular weight substances and diffusive transport (hemodialysis) for smaller molecular weight solutes.
Dialysis fluid being introduced into and removed from the peritoneal cavity as either a continuous or an intermittent procedure.
Portable peritoneal dialysis using the continuous (24 hours a day, 7 days a week) presence of peritoneal dialysis solution in the peritoneal cavity except for periods of drainage and instillation of fresh solution.
Solutions prepared for hemodialysis. The composition of the pre-dialysis solution may be varied in order to determine the effect of solvated metabolites on anoxia, malnutrition, acid-base balance, etc. Of principal interest are the effect of the choice of buffers (e.g., acetate or carbonate), the addition of cations (Na+, K+, Ca2+), and addition of carbohydrates (glucose).
A process of selective diffusion through a membrane. It is usually used to separate low-molecular-weight solutes which diffuse through the membrane from the colloidal and high-molecular-weight solutes which do not. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Polysaccharides composed of repeating glucose units. They can consist of branched or unbranched chains in any linkages.
The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.
Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.
A membrane or barrier with micrometer sized pores used for separation purification processes.
Disturbances in the body's WATER-ELECTROLYTE BALANCE.
A process of separating particulate matter from a fluid, such as air or a liquid, by passing the fluid carrier through a medium that will not pass the particulates. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A compound formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids.
A cluster of convoluted capillaries beginning at each nephric tubule in the kidney and held together by connective tissue.
Absence of urine formation. It is usually associated with complete bilateral ureteral (URETER) obstruction, complete lower urinary tract obstruction, or unilateral ureteral obstruction when a solitary kidney is present.
INFLAMMATION of the PERITONEUM lining the ABDOMINAL CAVITY as the result of infectious, autoimmune, or chemical processes. Primary peritonitis is due to infection of the PERITONEAL CAVITY via hematogenous or lymphatic spread and without intra-abdominal source. Secondary peritonitis arises from the ABDOMINAL CAVITY itself through RUPTURE or ABSCESS of intra-abdominal organs.
The serous fluid of ASCITES, the accumulation of fluids in the PERITONEAL CAVITY.
Artificially produced membranes, such as semipermeable membranes used in artificial kidney dialysis (RENAL DIALYSIS), monomolecular and bimolecular membranes used as models to simulate biological CELL MEMBRANES. These membranes are also used in the process of GUIDED TISSUE REGENERATION.
A primary source of energy for living organisms. It is naturally occurring and is found in fruits and other parts of plants in its free state. It is used therapeutically in fluid and nutrient replacement.
Disorder characterized by a wide range of structural changes in PERITONEUM, resulting from fibrogenic or inflammatory processes. Peritoneal fibrosis is a common complication in patients receiving PERITONEAL DIALYSIS and contributes to its gradual decrease in efficiency.
A system of organs and tissues that process and transport immune cells and LYMPH.
Tendency of fluids (e.g., water) to move from the less concentrated to the more concentrated side of a semipermeable membrane.
The balance of fluid in the BODY FLUID COMPARTMENTS; total BODY WATER; BLOOD VOLUME; EXTRACELLULAR SPACE; INTRACELLULAR SPACE, maintained by processes in the body that regulate the intake and excretion of WATER and ELECTROLYTES, particularly SODIUM and POTASSIUM.
Proteins that are present in blood serum, including SERUM ALBUMIN; BLOOD COAGULATION FACTORS; and many other types of proteins.
Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES.
Pathological processes involving the PERITONEUM.
A method which uses specific precipitation reactions to separate or collect substances from a solution.
Property of membranes and other structures to permit passage of light, heat, gases, liquids, metabolites, and mineral ions.
A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules.
The space enclosed by the peritoneum. It is divided into two portions, the greater sac and the lesser sac or omental bursa, which lies behind the STOMACH. The two sacs are connected by the foramen of Winslow, or epiploic foramen.
The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. The transport can be across cell membranes and epithelial layers. It also can occur within intracellular compartments and extracellular compartments.
The volume of water filtered out of plasma through glomerular capillary walls into Bowman's capsules per unit of time. It is considered to be equivalent to INULIN clearance.
The pressure due to the weight of fluid.
Condition where a primary dysfunction of either heart or kidney results in failure of the other organ (e.g., HEART FAILURE with worsening RENAL INSUFFICIENCY).
Abnormally low BLOOD PRESSURE that can result in inadequate blood flow to the brain and other vital organs. Common symptom is DIZZINESS but greater negative impacts on the body occur when there is prolonged depravation of oxygen and nutrients.
Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.
Agents that promote the excretion of urine through their effects on kidney function.
Elements of limited time intervals, contributing to particular results or situations.
Method for determining the circulating blood volume by introducing a known quantity of foreign substance into the blood and determining its concentration some minutes later when thorough mixing has occurred. From these two values the blood volume can be calculated by dividing the quantity of injected material by its concentration in the blood at the time of uniform mixing. Generally expressed as cubic centimeters or liters per kilogram of body weight.
Fluids composed mainly of water found within the body.
Liquid components of living organisms.
Solution that is usually 10 percent glucose but may be higher. An isotonic solution of glucose is 5 percent.
A chemical system that functions to control the levels of specific ions in solution. When the level of hydrogen ion in solution is controlled the system is called a pH buffer.
Process of using a rotating machine to generate centrifugal force to separate substances of different densities, remove moisture, or simulate gravitational effects. It employs a large motor-driven apparatus with a long arm, at the end of which human and animal subjects, biological specimens, or equipment can be revolved and rotated at various speeds to study gravitational effects. (From Websters, 10th ed; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The sum of the weight of all the atoms in a molecule.
Incision of tissues for injection of medication or for other diagnostic or therapeutic procedures. Punctures of the skin, for example may be used for diagnostic drainage; of blood vessels for diagnostic imaging procedures.
Controlled operation of an apparatus, process, or system by mechanical or electronic devices that take the place of human organs of observation, effort, and decision. (From Webster's Collegiate Dictionary, 1993)
The pressure required to prevent the passage of solvent through a semipermeable membrane that separates a pure solvent from a solution of the solvent and solute or that separates different concentrations of a solution. It is proportional to the osmolality of the solution.

Tranexamic acid increases peritoneal ultrafiltration volume in patients on CAPD. (1/859)

OBJECTIVE: The preservation of ultrafiltration (UF) capacity is crucial to maintaining long-term continuous ambulatory peritoneal dialysis (CAPD).The aim of the present study was to investigate whether the antiplasmin agent tranexamic acid (TNA) increases UF volume in CAPD patients. PATIENTS AND METHODS: Fifteen patients on CAPD, 5 with UF loss and 10 without UF loss, were recruited for the study. The effect of TNA was evaluated with respect to changes in UF volume, peritoneal permeability, peritoneal clearance, bradykinin (BK), and tissue plasminogen activator (tPA) concentration. SETTING: Dialysis unit of the Saiseikai Central Hospital. RESULTS: In patients with UF loss, 2 weeks of treatment with oral TNA produced a significant increase in UF volume in all subjects (5/5).TNA also produced a significant increase in peritoneal clearances of urea and creatinine (Cr). However, the peritoneal equilibration test (PET) revealed that TNA had no effect on dialysate/plasma (D/P) Cr, Kt/V, or the protein catabolic rate (PCR).TNA also had no effect on net glucose reabsorption. In contrast, significant decreases in BK and blood tPA concentrations in response to TNA treatment were noted. BK concentration in drainage fluid was also reduced. In the case of patients without UF loss,TNA produced an increase in UF volume in 70% (7/10). However, no differences were found in blood and drainage BK and tPA concentrations between theTNA treatment and nontreatment periods in these patients. A comparison of basal BK and tPA concentration showed that there were no differences in these parameters between patients with UF loss and those without loss of UF. Furthermore,TNA given intraperitoneally to a patient also produced a marked increase in UF volume. CONCLUSION: The present study suggests thatTNA enhances UF volume in patients both with and without UF loss. SinceTNA did not affect peritoneal permeability and glucose reabsorption, the mechanism by which TNA exerts an enhancing action on UF is largely unknown. We speculate that it may be associated with suppression of the BK and/or tPA system, at least in patients with UF loss.  (+info)

Evidence of splanchnic-brain signaling in inhibition of ingestive behavior by middle molecules. (2/859)

Anorexia, nausea, and vomiting are common symptoms of uremic intoxication. Fractions in the middle molecule weight range, isolated from normal urine and uremic plasma ultrafiltrate, inhibit ingestive behavior in the rat. To investigate their site of action and specificity, male rats were injected intraperitoneally, intravenously, or intracerebroventricularly with concentrated fractions of uremic plasma ultrafiltrate or normal urine (molecular weight range: 1.0 to 5.0 kD) and tested for ingestive and sexual behavior. An intraperitoneal injection of 0.5 ml of urine fraction (10:1) or 2.0 ml of uremic plasma ultrafiltrate fraction (25:1) inhibited carbohydrate intake by 76.3 and 45.9%, respectively, but an intravenous injection had no effect. However, intravenous injection of higher doses inhibited carbohydrate ingestion. An intracerebroventricular injection of 5 or 10 microl of urine (20:1) middle molecule fraction inhibited carbohydrate intake by 13.4 and 41.6%, respectively. An injection of 5 or 10 microl of uremic plasma ultrafiltrate (125:1) middle molecule fraction inhibited carbohydrate intake by 22.6 and 49.5%, respectively. Injections of the corresponding fraction from normal plasma ultrafiltrate had no effect. Injection of urine or uremic plasma ultrafiltrate middle molecule fractions did not affect the display of sexual behavior. These results suggest that middle molecule fractions from uremic plasma ultrafiltrate or normal urine act in the splanchnic region and/or brain to inhibit food intake and that the effect is specific for ingestive behavior.  (+info)

Nitrite determination in human plasma and synovial fluid using reactions of nitric oxide with 3, 5-dibromo-4-nitrosobenzenesulphonate (DBNBS). (3/859)

DBNBS (3,5-dibromo-4-nitrosobenzenesulphonate) reacts with nitric oxide (NO) produced from nitrite ions in acid solution to give a radical with a characteristic electron spin resonance spectrum, attributable to a 'DBNBS-NO' product, and comprising a triplet with alphaN=0.96 mT. This is identical with the spectrum obtained when NO, introduced from the gas phase, reacts with DBNBS. Under certain conditions, an additional signal is observed, attributable to oxidation of DBNBS to the radical cation, DBNBS*+ (a triplet with alphaN=1.32 mT). Conditions are described for the determination of nitrite, which avoid this DBNBS oxidation. The height of the low-field signal from the DBNBS-NO product is directly proportional to the nitrite concentration up to about 0.08 mM nitrite. The method has been applied to the measurement of nitrite concentrations in whole blood, plasma and synovial fluid taken from rheumatoid arthritis patients. In order to avoid the oxidation of DBNBS when analysing biological samples of this type, it is necessary to treat the specimen by ultrafiltration as soon as possible after collection and before addition of DBNBS.  (+info)

Resonance in the renal vasculature evoked by activation of the sympathetic nerves. (4/859)

We examined the ability of different frequencies in sympathetic nerve activity (SNA) to induce oscillations in renal blood flow (RBF). In anesthetized rabbits the renal nerves were stimulated using modulated sine patterns (base frequency 5 Hz, 5-ms duration pulses) that varied in amplitude between 0 and 10 V at a frequency between 0.04 and 1.0 Hz. The strengths of the induced oscillations in RBF were calculated using spectral analysis. Although faster rhythms in simulated SNA >0.6 Hz contributed to the level of vascular tone, 95% of the power in the frequency response curve was below this frequency, indicating a low-pass filtering/integrating characteristic of the vasculature. Frequencies <0.6 Hz were associated with increasing ability to induce oscillations in RBF. The ability of an SNA rhythm at 0.6 Hz to induce a rhythm in RBF was 21 times less than that at 0.25 Hz. At 0.16 Hz there was a distinct peak in the frequency response curve, indicating the vasculature was more sensitive in this frequency band to sympathetic stimulation. Blockade of endogenous nitric oxide by NG-nitro-L-arginine methyl ester (L-NAME; 20 mg/kg) did not alter resting RBF levels nor was the low-pass filtering/integrating characteristic of the vasculature to nerve stimulation changed (i.e., the curve was not shifted left or right); however, there was a selective increase in the sensitivity to stimulation at 0.16 Hz, i.e., larger oscillations in RBF were evoked. These results indicate an ability of SNA to induce resonant oscillations in the renal vasculature and that there may be active and passive modulators of these responses. Naturally occurring oscillations in SNA <0.6 Hz are likely to contribute to the dynamic control of RBF, ensuring it responds rapidly and with high gain to the stimuli of daily life, while filtering out the faster oscillations ensures stable glomerular filtration.  (+info)

Erythroid accelerating factor detected in serum from rats with drug induced hemolysis. (5/859)

We have previously observed that an erythroid enhancing activity presents in rat serum in the early stage of drug induced hemolytic anemia. The further studies on biological and physicochemical aspects of this erythroid accelerating factor (EAF) is described in this paper. Hemolytic anemia was induced in rats by single intraperitoneal injection of acetylphenylhydrazine (APH) and serum was obtained from the rats on day 1 after APH injection. It was first fractionated by ultrafiltration on Amicon Diaflo membranes to give a series of fractions lying in the following ranges of molecular weight: 10-30 kDa, 30-50 kDa, 50-100 kDa, and >100 kDa. Among those fractions, largest increase in the number of colony forming unit erythroid CFU-E) colonies was shown in the fraction of >100 kDa that was subsequently fractionated by fast protein liquid chromatography (FPLC) system. EAF activity for CFU-E proliferation was detected in a FPLC fraction corresponding to a molecular weight of about 160 kDa. An addition of EAF significantly increased with dose dependent manner in the number of CFU-E colonies from rat bone marrow mononuclear cells. EAF alone had no burst promoting activity and exhibited no distinct activity to proliferate burst forming unit-erythroid even when interleukin-3 (IL-3) and high concentration (2 U/ml) of erythropoietin (Epo) were added together to the culture. The stimulating effect of EAF on CFU-E was markedly dependent on the presence of adherent cells in the culture. Partially purified protein was relatively heat-unstable (60% at 75 degrees C, 30 minutes) and sensitive to treatment with trypsin and alpha-galactosidase. These results suggest that EAF is a novel factor, possible glycoprotein to reinforce Epo function and is different from various cytokines previously documented because of differences of approximate molecular weight.  (+info)

Endothelin mediates renal vasodilation and hyperfiltration during pregnancy in chronically instrumented conscious rats. (6/859)

Profound vasodilation of the kidneys and other nonreproductive organs transpires during early pregnancy. Because nitric oxide (NO) was found to mediate renal vasodilation and hyperfiltration in conscious pregnant rats, and endogenous endothelin (ET) was suggested to be vasodilatory in the renal circulation of nonpregnant rats, we tested whether endothelin mediates the NO-dependent changes in the renal circulation during pregnancy. Glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) were measured in conscious pregnant and virgin rats before and during infusion of 30 micrograms/min RES-701-1 (a selective ETB receptor subtype antagonist). Baseline GFR and ERPF were significantly increased by 35% in gravid rats relative to virgin controls. During infusion of RES-701-1, the pregnant rats responded more robustly, showing a greater decline in both GFR and ERPF such that renal function converged in the two groups of rats. ERPF also converged in pregnant and virgin rats during infusion of SB-209760, a nonselective ETA/B receptor subtype antagonist. Combined infusion of Nomega-nitro-L-arginine methyl ester [L-NAME, an NO synthase (NOS) inhibitor] and RES-701-1 reduced GFR and ERPF to levels comparable to those reached with either agent given alone, suggesting inhibition of a common vasodilatory pathway. RES-701-1 and SB-209670 significantly lowered the cGMP content of small renal arteries from gravid and virgin rats in vitro, strengthening the link between the renal endothelial ETB receptor subtype and NO. Importantly, we showed that RES-701-1 is not a direct inhibitor of NOS. We conclude that endothelin mediates the NO-dependent changes in the renal circulation of conscious rats during pregnancy.  (+info)

Complementary effects of bifidogenic growth stimulators and ammonium sulfate in natural rubber serum powder on Bifidobacterium bifidum. (7/859)

Natural rubber serum powder, rich in crude protein and carbohydrates, had a strong growth-stimulating activity for Bifidobacterium bifidum JCM 1254, which was unable to grow in a fully synthetic medium, B12 assay medium. Natural rubber serum powder was fractionated by ultrafiltration (molecular weight cutoff 1000). The active ultrafiltrate was further concentrated and desalted with an adsorptive microconcentrator, which adsorbs virtually all amino acids and peptides. Through this purification step, it was found that the adsorbed fraction obtained did not stimulate growth independently but acted complementarily with a small amount of ammonium sulfate. The adsorbed fraction was subsequently analyzed on reversed-phase high pressure liquid chromatography, and the activities of the eluates were measured on B12 assay medium with ammonium sulfate. Consequently, it was proved that several peptidic ingredients in the adsorbed fraction increased the growth of B. bifidum.  (+info)

Caspases induce cytochrome c release from mitochondria by activating cytosolic factors. (8/859)

We investigated the ability of caspases (cysteine proteases with aspartic acid specificity) to induce cytochrome c release from mitochondria. When Jurkat cells were induced to undergo apoptosis by Fas receptor ligation, cytochrome c was released from mitochondria, an event that was prevented by the caspase inhibitor, zVAD-fmk (zVal-Ala-Asp-CH2F). Purified caspase-8 triggered rapid cytochrome c release from isolated mitochondria in vitro. The effect was indirect, as the presence of cytosol was required, suggesting that caspase-8 cleaves and activates a cytosolic substrate, which in turn is able to induce cytochrome c release from mitochondria. The cytochrome c releasing activity was not blocked by caspase inhibition, but was antagonized by Bcl-2 or Bcl-xL. Caspase-8 and caspase-3 cleaved Bid, a proapoptotic Bcl-2 family member, which gains cytochrome c releasing activity in response to caspase cleavage. However, caspase-6 and caspase-7 did not cleave Bid, although they initiated cytochrome c release from mitochondria in the presence of cytosol. Thus, effector caspases may cleave and activate another cytosolic substrate (other than Bid), which then promotes cytochrome c release from mitochondria. Mitochondria significantly amplified the caspase-8 initiated DEVD-specific cleavage activity. Our data suggest that cytochrome c release, initiated by the action of caspases on a cytosolic substrates, may act to amplify a caspase cascade during apoptosis.  (+info)

Cutting edge research leads to commercialisation of ultrafiltration membrane technology. The launch of the South Africas first locally produced ultrafiltration membrane technology will take place on the 29th October 2009 in Somerset West. Most membranes used in South Africa have been imported at great cost. With this in mind, a joint research project, funded by the Water Research Commission (WRC), was initiated in 1996 and succeeded to develop suitable and cost-effective, locally produced, ultrafiltration membranes and filtration systems for use in water treatment and industrial water management. These ultrafiltration purification systems are capable of removing particulate matter, colour, bacteria (such as cholera), viruses and parasitic micro-organisms without the need to add chemicals says Mr Andrew Theunissen, Chairman of Ikusasa Water, the company manufacturing these membranes: Purification systems using these membranes will be able to meet any drinking water supply need of communities ...
Alibaba.com offers 623 ceramic ultrafiltration membrane products. About 68% of these are water treatment, 11% are water filters, and 1% are waterproof membrane. A wide variety of ceramic ultrafiltration membrane options are available to you, such as free samples.
TY - JOUR. T1 - Tight ultrafiltration membranes for enhanced separation of dyes and Na2SO4 during textile wastewater treatment. AU - Lin, Jiuyang. AU - Ye, Wenyuan. AU - Baltaru, Marian Cornel. AU - Tang, Yu Pan. AU - Bernstein, Nicole J.. AU - Gao, Peng. AU - Balta, Stefan. AU - Vlad, Maria. AU - Volodin, Alexander. AU - Sotto, Arcadio. AU - Luis, Patricia. AU - Zydney, Andrew L.. AU - Van der Bruggen, Bart. N1 - Publisher Copyright: © 2016 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.. PY - 2016/9/15. Y1 - 2016/9/15. N2 - Nanofiltration (NF) membranes have been used previously for the recovery of dyes, salts, and water from textile wastewaters with high salinity. However, commercially available NF membranes have a high rejection for divalent salts (i.e., Na2SO4), substantially reducing the salt recovery and membrane flux when treating textile wastewater containing Na2SO4. In this study, a tight ultrafiltration membrane (UH004, Microdyn-Nadir) was proposed to ...
Research Report on Global Ultrafiltration Membrane Filtration Market 2017 Industry Research Report. The Report includes market price, demand, trends, size, Share, Growth, Forecast, Analysis & Overview.
47 mm Membrane Diameter Ultrafiltration Membrane Disc Filters, Pall Life Sciences : Replacement membranes for conventional, nondisposable stirred cel
Learn how WesTechs ultrafiltration membranes team helped an industrial customer solve for several surface water treatment challenges.
Wheat-germ extract for cell-free protein synthesis was condensed with ultrafiltration membranes of which the molecular cut-off values were 10 kDa, 100 kDa, and 300 kDa. Reaction conditions of the cell-free system were optimized for the condensed extracts, which needed a higher concentration of creat …
Modification of polyethersulfone ultrafiltration membranes with phosphorylcholine copolymer can remarkably improve the antifouling and permeation properties Academic Article ...
Research Report on Global Ultrafiltration Membrane Sales Market Report 2017. The Report includes market price, demand, trends, size, Share, Growth, Forecast, Analysis & Overview.
Find flat sheet ultrafiltration membrane articles on Environmental XPRT, the worlds largest environmental industry marketplace and information resource.
These Centrifugal Ultrafiltration Devices for protein concentration remove proteins from difficult to filter samples, even whole blood or cell lysate samples.
A method of removing ash from sugar containing solutions comprises contacting the sugar containing solution against one side of an ultrafiltration membrane with a stripping fluid to strip away monovalent ions and low molecular weight sugars which pass through the membrane. The stripping fluid is contacted at high pressure against one side of a nanofiltration membrane which allows passage of monovalent ions and water only. The deashed retentate can be returned to sugar containing solution, pass through an ion exchange column or cause to contact one side of a high pressure ultrafiltration membrane which allows passage of water monovalent ions and low molecular weight sugars. The permeate from the high pressure ultrafiltration membrane can be subjected to ion exchange to provide a liquid sugar having a low ash content while the retentate can be evaporated to a sugar product. The use of the semipermeable membranes allows efficient deashing of sugar containing solutions (i.e. sugar cane or sugar beet
article{1d2e4400-9df1-45e1-9a7b-120fced61582, abstract = {The influences of different types of cleaning agents on a polysulphone ultrafiltration (UF) membrane which had been used to treat oily waste water were investigated. The cleaning experiments were performed with samples of polysulphone membranes removed from a commercial plant in which oily waste water is treated. Five different cleaning agents were used and their influences on the fluxes were investigated. The influence on the flux when cleaning with the different cleaning agents in succession was also studied. Deposits on the membrane surface, before and after cleaning, were analysed using different methods. Most of the analyses were carried out using scanning electron microscopy (SEM) in combination with energy dispersive X-ray (EDX) combined with a micro-analysis system permitting quantitative determination of elements. Some analyses were also performed using Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron ...
ELECTRODE SURFACE. 5. MONOMER COMPOSITIONS FOR EIP. 6. MECHANISM AND KINETICS OF FILM FORMATION AT ELECTROCOPOLYMERIZATION OF ACRYLIC ACID, ACRYLAMIDE AND FORMALDEHYDE. 7. PHYSICAL-CHEMICAL REGULARITIES OF POLYMER FILMS FORMATION AT ELECTROCOPOLYMERIZATION OF ACRYLAMIDE AND FORMALDEHYDE IN THE AQUEOUS MEDIUM. 8. FORMATION OF POLYMER FILMS FROM AQUEOUS SOLUTION OF N-METHYLOLACRYLAMIDE [132]. 9. PRINCIPLES OF THE POLYMER LAYER FORMATION IN THE PROCESS OF EIP [98]. 10. CURRENT-VOLTAGE CHARACTERISTICS OF ELECTRODE MODIFIED BY THE POLYMER FILM [43, 133, 134]. 11. IN SITU STUDY OF ELECTROPOLYMERIZATION KINETICS OF ACRYLAMIDE, FORMALDEHYDE, AND N,N-METHYLENEBISACRYLAMIDE [136]. 12. SYNTHESIS OF ULTRAFILTRATION MEMBRANES BY ELECTROCHEMICALLY INITIATED POLYMERIZATION OF ACRYLIC MONOMERS [22, 23, 141]. 13. PROPERTIES OF ELECTROSYNTHESIZED ULTRAFILTRATION MEMBRANES AND FIELDS OF THEIR PRACTICAL ...
Pall Corporation is a filtration, separation and purification leader providing solutions to meet the critical fluid management needs of customers across the broad spectrum of life sciences and industry. Pall works with customers to advance health, safety and environmentally responsible technologies. The Companys engineered products enable process and product innovation and minimize emissions and waste.. ...
Article PREFILTERS IN ULTRAFILTRATION PROCESSES. AZUD HELIX AUTOMATIC filters are excellent protecting Ultrafiltration membranes. Their operation is based in ...
Sample collection for oxaliplatin and FU pharmacokinetics. Heparinized 7-mL blood samples were collected for determination of platinum in plasma ultrafiltrate and plasma FU concentrations at 0 (predose), 1, 2 (end of oxaliplatin infusion, start of FU bolus), 2.25, 2.5, 3, 4, 6, 8, and 24, and between 44 and 48 h, with the average of the last three samples (8, 24, and 46 h) being used to determine the steady-state FU concentration.. Platinum measurements. Plasma ultrafiltrate was prepared from plasma by centrifugal ultrafiltration using Amicon Centrifree Micropartition Systems (Millipore Corporation), and platinum was measured with a validated flameless atomic absorption spectrophotometric (PE ZL4100, Perkin Elmer) method (33). Briefly, plasma ultrafiltrate was diluted 1:1 in 0.1% nitric acid + 0.2% Triton X-100, and a 20 μL was injected into the atomic absorption spectrophotometer. Platinum standards were prepared in the same manner and in the same matrix. Quality assurance was maintained by ...
Ultrafiltration through double lumen catheter, via central vein (Vena jugularis interna or Vena femoralis, 11 French, 15 cm for right jugular or 20 cm for femoralis and jugularis left-position). Based on severity of fluid overload the cardiologist determines the ultrafiltration rate. Multifiltrate Fresenius (extracorporeal blood volume 72ml) in SCUF (slow continuous ultrafiltration) modus with pediatric lines (54 ml extracorporeal volume in the AV-set) and a pediatric filter (Ultraflux® AV paed, blood volume 18ml). Heparin to maintain an APTT between 65 en 85 seconds during ultrafiltration ...
Olson, D.W. and D. J. McMahon. 1991. Zeta-potential of casein micelles in UHT-treated ultrafiltered skim milk. 86th American Dairy Science Association Meeting, . Dairy Sci. 74(Supp. 1):D155. ...
This study aimed to develop improved cleaning strategies for controlling biofilms on the surfaces of membranes used in dairy ultrafiltration (UF) and reverse osmosis (RO) plants. Eleven UF / RO membrane modules from 7 different New Zealand dairy membrane processing plants were received after typical cleaning-in-place (CIP) procedures. Microorganisms were isolated from both the retentate and permeate sides of these membrane surfaces and from the liquids collected from a UF membrane plant. Also some foulants scraped from a RO membrane were tested. The routine CIP currently used in the dairy plants was not adequate to completely remove organic material, including microbial cells, proteins and carbohydrates from the membrane surfaces. These residues may influence the surface characteristics and interactions between microorganisms and membranes and thus affect biofilm formation. Thirteen isolates including both bacteria and yeast were identified using biochemical techniques. Klebsiella oxytoca were ...
An ultrafiltration device adapted to be worn on a portion of the body of a patient includes a blood inlet tube leading from a first blood vessel, a blood pump, an anticoagulant reservoir for infusing anticoagulants into the blood, a blood filter including a substrate through which the blood is circulated and filtered, a fluid bag for storing the excess fluid and a blood outlet tube leading to a second blood vessel.
Vivaspin® Concentrators are disposable ultrafiltration devices that may be utilized for the washing and concentration of submicron microspheres.
Design of Ultrafiltration plants for safe drinking water Frans Knops Mark Steggink Irene Körbl X-Flow CONTENTS 1) 2) 3) 4) 5) 6) 7) 8) PENTAIR INTRODUCTION ULTRAFILTRATION DESIGNING AN UF SYSTEM COMPONENTS OF AN UF PLANT MEMBRANE FOULING AND CLEANING TESTING AND VALIDATING FOR DRINKING WATER NEW DEVELOPMENTS EXAMPLES OF POTABLE WATER UF PLANTS X-Flow 2 INTRODUCTION WHAT IS A MEMBRANE? ‐ A membrane is a selective physical barrier used to separate a stream (gases or liquids and slurries) into its components based on their permeability through the barrier. COMMON MEMBRANES PROCESSES FOR WATER TREATMENT: ‐ ‐ ‐ ‐ Microfiltration (MF) Ultrafiltration (UF) Nanofiltration (NF) Reverse Osmosis (RO) PENTAIR X-Flow 3 ULTRAFILTRATION PENTAIR X-Flow 4 DESIGNING AN UF SYSTEM INFORMATION REQUIRED: • Feed Quality: » » » • Capacity: » » • Micro biological removal efficiency Removal of organics and color Other considerations: » » PENTAIR Nominal flow Peak flow Required filtrate quality: » ...
Amino acid analysis is an important technique that has many applications in biochemical, pharmaceutical, and biomedical fields. Profiling of plasma amino acids is also of great interest in clinical...
We recommend installing a whole house sediment prefilter before the FreshPoint System, like a Rusco filter or a 5 micron 20 BB pleated or graded density filter, in order to eliminate larger sediment before the water reaches the Ultrafiltration membrane. Features: Removes turbidity, cysts, and other particles down to 0
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We use cookies to enhance your experience, evaluate the use of individual items on Ultrafilter, and to support the promotion of our services. By using Ultrafilter you agree to our use of cookies.. OK ...
We use cookies to enhance your experience, evaluate the use of individual items on Ultrafilter, and to support the promotion of our services. By using Ultrafilter you agree to our use of cookies.. OK ...
We use cookies to enhance your experience, evaluate the use of individual items on Ultrafilter, and to support the promotion of our services. By using Ultrafilter you agree to our use of cookies.. OK ...
Vi bruger cookies for at forbedre din oplevelse, vurdere brugen af de enkelte elementer på Ultrafilter og til at støtte markedsføringen af vores services. Ved at benytte Ultrafilter accepterer du vores brug af cookies.. OK ...
Demand for membranes in the US is expected to increase 7.7 percent per year to $5.4 billion in 2016, driven by water and wastewater regulations. Polymeric membranes will remain the dominant material. Microfiltration membranes will continue as the largest product segment, while reverse osmosis and ultrafiltration membranes will grow the fastest.This study analyzes the $3.7 billion US membrane industry, with forecasts for 2016 and 2021 by material (e.g., polymeric, ceramic), type (e.g., microfiltration, reverse osmosis, ultrafiltration, pervaporation, nanofiltration) and market (e.g., water and wastewater treatment, food and beverage processing, pharmaceutical and medical uses, chemical processing, industrial gas processing).The study also considers market environment factors, details industry structure, evaluates company market shares and profiles 38 industry players, including Pall, General Electric and Millipore.
Our previous results showed that intrasynovial Rifamycin SV caused the lysis of synoviocites and freed the autoantigens which in turn stimulated the immunoregulatory rather than autoreactive T cell response in rheumatoid patients. Here, we hypothesize that disruption in vitro of peripheral blood mononuclear cells, by freeze/thawing or by lytic action of Rifamycin SV, would induce the release of endosomal pathogenic autoantigens from APCs present in the circulation, which could then be isolated from degrading enzymes by ultrafiltration. The preparation of the ultrafiltrates are based on the rupture of PBMCs (5 × 106 cells/mL) by the addition of Rifamycin SV in culture (250 μg/mL), which causes the lysis of 90 % of the cells in 3 h, or by three cycles of freeze/thawing of the PBMC, from −80 °C to room temperature. The lysate and the fragmented cells were then centrifuged and ultrafiltered by passage through a filtration device with a cut-off of 10 kDa. Also the synovial fluid was subjected to
Chocolate Ultrafiltered Powder Glutamine Rich High in Protein• High in BCAAs Low Lactose • Ultrafiltered 908 grams (2lbs) USAGE: Mix one level scoop (provided in container) of 100% natural Whey with 4 to 6 oz. of cold water, soy-milk, juice or your favorite beverage. Take 1 to 2 servings daily after exercise, or as directed by your qualified health consultant. For a protein-rich shake or smoothie, mix or blend 2 to 4 scoops of whey with crushed ice and add juice or fruit to desired taste. When a protein supplement is desired, use 1 to 3 scoops. May also be used with cereals, yogurt or pancakes to increase the protein in your diet. WHEY PROTEIN is a 100% natural protein concentrate of Whey and is specially ultrafiltered under low temperature to be low in fat, lactose and carbohydrates. WHEY PROTEIN is a rich source of glutamine-rich biologically active proteins. Fifty-one percent of the proteins found in Whey are from BLG (Beta-Lactoglobulin), 20% of Whey is ALB (Alpha-Lactalbumin), 10%
Because of the increasing incidence of acute heart failure admissions to critical care units, nephrologists have been asked to become more involved in the management of these patients. Renal dysfunction is a major element in impeding clinical recovery. In acute heart failure, renal function is often abnormal. The judicious application of ultrafiltration techniques may represent an efficacious adjunct to present conventional practice. In patients with refractory congestive heart failure, the ability to provide continuous, daily, large volume removal not only improves volume status but also the clinical symptoms of the decompensated patient. A thorough literature review supports the premise that starting hemofiltration is an appropriate alternative for difficult and unstable cardiac patients. An optimal strategy utilizing continuous renal replacement therapy can dramatically improve the patients clinical condition, mitigate the neurohumoral stimulation, increase urinary output and promote absorption of
Methods and apparatuses for salvaging blood from a patient are disclosed. A blood salvaging and/or blood processing circuit coupled to a cardiopulmonary bypass circuit, cardiotomy circuit, or directly to the patient comprises a hemocentrator for removing water, fluids, and low molecular weight solutes by ultrafiltration and a sorbent-containing plasma separator for removing a selected solute, such as heparin. A combination device for salvaging blood comprises a closed plasma chamber containing a plasma chamber solution, a hollow fiber plasma-separating membrane for receiving blood and permitting plasma to be transported therethrough into the plasma chamber solution and for refiltering the treated plasma back into the blood circuit, a selective sorbent for contacting the selected solute in the plasma and binding the selected solute, and an ultrafiltration membrane for removing water, fluids, and low molecular weight components from the plasma.
This research identified unintended consequences of integrating ultrafiltration and its required ancillary cleaning systems within conventional surface water treatment facilities. Carboxylic acids, used in ultrafiltration membrane chemically enhanced backwashes, were demonstrated to interfere with ferric chloride and alum coagulation if recycled into coagulation basins at sufficient acid to coagulant (A/C) molar ratios. Tricarboxylic citric acid and monocarboxylic acetic acid were shown to interfere with conventional coagulation process performance. Significant changes in settled water turbidity, true colour and metal concentrations were observed in jar tests designed to simulate full-scale water treatment plant operations. A threshold A/C molar ratio for coagulation interference was identified for three surface waters in the United States based on sedimentation basin performance goals established by the US Environmental Protection Agency. Citric acid interfered with coagulation at A/C molar ...
There have been, and continue to be, reports of discordant free thyroxine (T4)1 measurements when different free-T4 methods are applied to the same serum samples (1)(2)(3)(4). Our laboratory has attempted to identify some of the factors that contribute to these disparities.. There are 4 separate components of serum T4: free T4, albumin-bound T4, transthyretin-bound T4, and thyroxine-binding globulin (TBG)-bound T4. Free T4 is the one component that moves across semipermeable membranes during equilibrium dialysis and ultrafiltration. As Midgley and Christofides point out, the gold standard free-T4 methods are designed to measure this component.. We applied analog-type methods and an equilibrium-dialysis/immunoassay gold standard method to carefully prepared solutions in which we varied these 4 components of serum T4. This equilibrium-dialysis method agrees closely with a liquid chromatography-tandem mass spectrometry method applied to serum ultrafiltrates (4). We also applied this equilibrium ...
Low abundant proteins make up about 1% of the entire human serum proteome, with the remaining 99% being comprised of only 22 proteins. It is therefore imperative to deplete the level of abundant proteins as an essential first step in the characterization of serum by MS analyses. Prefractionation approaches employing chromatographic adsorbents (e.g. anti-HSA antibodies, Cibacron Blue) have been used to remove abundant proteins such as albumin, however, these methods likely result in the removal of LMW species bound to albumin (10). We used centrifugal ultrafiltration employing Centriplus 30 (YM30) membrane ultrafilters to deplete abundant proteins such as albumin and enrich for LMW proteins. The method described here allows for the rapid and efficient removal of albumin and other highly abundant proteins while minimizing the concomitant loss of LMW components potentially bound to high abundant proteins. An earlier study by Georgiou et al. (21) reported that ultrafiltration failed to remove ...
The production of clarified and stable apple juice poses a challenge to the beverage industry. Today, this type of apple juice is produced by what are called microfiltration and ultrafiltration membrane technologies. These automated technologies offer a definite advantage in terms of productivity. However, certain juices can be very acidic and particularly rich in proteins and tannins; in such cases, membrane fouling can make the technology less attractive for apple juice clarification. It would be impossible to go back to the old clarification technique, which could take up to 20 hours and involved several steps, including the use of large quantities of enzymes to break down the pectin, followed by the addition of a clarifying agent (such as gelatine) to the freshly pressed juice to precipitate the proteins and tannins. It was necessary to wait until everything settled to the bottom before filtering it all through a filter press.. ...
Low abundant proteins make up about 1% of the entire human serum proteome, with the remaining 99% being comprised of only 22 proteins. It is therefore imperative to deplete the level of abundant proteins as an essential first step in the characterization of serum by MS analyses. Prefractionation approaches employing chromatographic adsorbents (e.g. anti-HSA antibodies, Cibacron Blue) have been used to remove abundant proteins such as albumin, however, these methods likely result in the removal of LMW species bound to albumin (10). We used centrifugal ultrafiltration employing Centriplus 30 (YM30) membrane ultrafilters to deplete abundant proteins such as albumin and enrich for LMW proteins. The method described here allows for the rapid and efficient removal of albumin and other highly abundant proteins while minimizing the concomitant loss of LMW components potentially bound to high abundant proteins. An earlier study by Georgiou et al. (21) reported that ultrafiltration failed to remove ...
Project details and outcome. In the cluster of Membrane Science and Technology these so-called Polyelectrolyte Multilayer (PEM) membranes are developed and investigated. Depending on the membrane coating conditions the structure and with that the membrane performance, solute selectivity and solvent permeability, can be changed. At the same time, it is hypothesized, that the membrane performance directly depends on the type and concentration of ions present during filtration. In addition to ion adsorption and charge screening effects, commonly observed phenomena for nanofiltration, the PEM structure might change significantly for different ions and ion concentrations, which has been recently observed in QCM-D studies of PEM swelling behavior [7].. The aim of this research is to investigate the influence of ion concentration on PEM performance related to structural changes. The focus will be on macroscopic transport measurements conducted with coated ultrafiltration membranes. Simultaneously ...
Norovirus, which can cause nausea, vomiting and diarrhea, is the most common cause of viral gastroenteritis in humans, and is estimated to be the second leading cause of gastroenteritis-associated mortality, according to BGU. In the study, which was published in the March edition of the journal Water Research, Prof. Moshe Herzberg of the Department of Desalination and Water Treatment in the Zuckerberg Institute for Water Research at BGU and his group grafted a special hydrogel coating onto a commercial ultrafiltration membrane.. The zwitterionic polymer hydrogel repels the viruses from approaching and passing through the membrane. It contains both positive and negative charges and improves efficiency by weakening virus accumulation on the modified filter surface.. The result, the international scientists report, was a significantly higher rate of removal of waterborne viruses, including the human norovirus and adenovirus. This article was originally published by Israel21c. Click here to ...
Tolerance to suspended solids *Process Suspended solids, micro-organisms and dissolved organic contaminantsare effectively removed by the sieving process; that is, contaminantstoo large to pass through the membrane pores remain in what becomes theconcentrate stream. For dissolved inorganic (ionic) contaminant removal, the membranetechnologies of nanofiltration and reverse osmosis must be employed,and since the pores of the membranes, although smaller than for themicrofiltration and ultrafiltration membranes, are not small enough tophysically sieve out these contaminants, a different mechanism applieshere. There is lack of agreement among the experts as to the exact mechanismof this rejection; however, it is known that multivalent salts arerejected to a higher degree than monovalent salts. This characteristicis exploited with nanofiltration membranes which exhibit overall lowersalts rejection than reverse osmosis membranes, but remove multivalentsalts to a much higher degree than monovalent ...
The ultrafiltration membrane separates the skimmed milk into two streams, allowing water, dissolved salts, lactose, and acids to pass through
Milk Protein Concentrate & Isolate Production Developed in 1999, Synders MK (PES 30kDa) ultrafiltration membrane was specifically designed for the
An ultrafiltration filter has a pore size around 0.01 micron. A microfiltration filter has a pore size around 0.1 micron, so when water undergoes microfiltration, many microorganisms are removed, but viruses remain in the water. Ultrafiltration would remove these larger particles, and may remove some viruses.
Divercin present in active extracts with 7% of ethanol and isopropanol addition as well as in active extract with 1% of Nonidet P-40, SDS and Tween 80 addition passed entirely through 100 kDa and 30 kDa membranes without any activity losses. However, it was partially stopped on the 10 kDa membranes. On this basis, it can be concluded that addition of mentioned chemicals in above defined concentrations did not caused the entire divercin disaggregation but split the bacteriocin macromolecules mainly to dimers. However, a small part of divercin activity, amounted 400 AU/mL, was detected in permeates from 5 kDa polyethersulfone membrane when 1% of SDS was added and in permeates from 5 kDa cellulose acetate membrane when 1% of SDS and 1% of Tween 80 was added, with activity of 800 AU/mL respectively. It means that these both detergents can split divercin to monomers. Ultrafiltration through the cellulose acetate membranes showed that in the presence of ethanol, isopropanol, Nonidet P-40 and Tween 80, ...
ENGLISH ABSTRACT: The aim of the thesis was to investigate the use of flow destabilization methods, combined with permeate backflushing (BIF) or on their own, on flux recovery and maintenance in capillary UF membrane systems under cross-flow (XF) and dead-end (DE) operating conditions. Various hydraulic and mechanical methods have been used to remove the accumulated cake layer and improve steady state process flux. Permeate backflushing (B/F) is the most widely used but the drawbacks are loss of product and extensive down-time. In a pilot plant study for ultrafiltration of surface waters containing high NOM, turbidity and cation loads, the use of flow destabilization, or feed flow reversal (FFR) combined with cross-flow B/F was able to improve the normalised flux by 10.7 ± 3.4 %, compared with 3.2 ± 1.6 % improvement for BIF without FFR. When a second B/F included FFR, the flux improvement was 7.0 ± 2.0 % compared with 4.3 ± 2.5 % for a B/F without FFR. The hypothesis was proposed that the ...
1) a resin solution preparation process in which a resin solution containing a photoreist resin is prepared, and(2) a purification process in which the resin solution is purified using a ultrafilter membrane.[2] The method for production of a photoresist resin according to [1], wherein the ultrafilter membrane comprises a ceramic.[3] The method for production of a photoresist resin according to [1] or [2] above, wherein the membrane layer of the ultrafilter membrane comprises TiO2 or ZrO2.[4] The method for production of a photoresist resin according to any one of [1] to [3] above, wherein the average pore size of the ultrafilter membrane is 10 nm or smaller.[5] The method for production of a photoresist resin according to any one of [1] to [4] above, wherein the purification process comprises a concentration process for concentrating the resin solution while removing impurities in the resin solution using the ultrafilter membrane, and a dilution process for diluting the concentrated resin ...
ULTRAFILTRATION MEMBRANE - The invention relates to a hollow-fibre membrane for ultrafiltration made from a hydrophobic aromatic sulfone polymer and at least one hydrophilic polymer, the membrane having an open-pore separating layer on the lumen side, an adjoining supporting layer with asymmetric, sponge-like pore structure without finger pores and an outer layer adjoining the supporting layer towards the outer surface. The separating layer has a cutoff between 20 000 and 200 000 daltons, a thickness of max. 10% of the membrane thickness and an essentially isotropic pore structure. The size of the pores in the supporting layer initially increases up to a zone with maximum pore size, and then decreases towards the outer layer, and the outer layer exhibits a thickness of 10 to 30% of the wall thickness and an essentially isotropic pore structure. The mean size of the pores in the outer layer is larger than in the separating layer, but smaller than in the supporting layer. The wall thickness of the ...
Modification of Lipase from Pseudomonas with Activated PEG2 (3) To 100 ml of 0.2 M sodium borate buffer (pH 9.5) containing 1 g of lipase from P. fragi is added stepwise 9.1 g of activated PEG2 under stirring (1.5-2.0 g h). The reaction mixture is stirred at 25 C for 5 h (see Note 3). Then, the reaction is stopped by adding 10 times the volume of 0.1 M borate buffer (pH 8.0) and then the sample solution is concentrated to one-tenth by an Amicon Diaflo YM100 ultrafiltration membrane.... ...
A system is disclosed for measuring the ultrafiltration rate in an artificial kidney. The system comprises a flow rate meter connected with the outlet of the dialyzer, means for placing the flow control system in bypass so that the dialysate flow is diverted around the dialyzer, and means for maintaining the static pressure of dialysate in the dialyzer during bypass at a value equal to the average of the dynamic pressure prior to bypass. The flow rate indicated by the meter during the bypass interval is equal to the rate of ultrafiltrate flow through the dialyzing medium. Preferably, the pressure in the dialyzer during bypass is maintained by a negative pressure regulating means which responds to the average value of dialysate pressure in the dialyzer during both the run and bypass operations.
Centrifugal Filtration. Centrifugation allows for clear solvent and micro molecules to pass through the ultrafiltration membrane and into a filtrate container positioned below. This is a gentle process that is characterized by quick set up and fast filtration speeds with most solutions.. Vivaproducts. Vivaproducts has been supplying the highest quality products to the clinical diagnostic marketplace for over 20 years. In 2008 they began offering new products for the purification of DNA in the forensic laboratory market. Vivaproducts are the widest supplier of concentrators to commercial and hospital labs. Their products are consistent, efficient and of the highest quality.. When testing for the detection of Bence Jones Proteins in Urine Protein Electrophoresis (UPE) or Urine Immunofixation (UIF) there are several important factors to consider when selecting a concentrator used to optimize recovery of these proteins.. Molecular Weight Cut Off:. The Molecular Weight Cut Off (MWCO) is an important ...
Summary Broth-culture filtrates of Campylobacter pylori induced non-lethal cytopathic effects in vitro in 7 of 9 mammalian cell lines tested. Transmission electronmicroscopy revealed that the response consisted of intracellular vacuolisation. Intestine 407 cells were among the most responsive and were used for routine assay. About 55% of isolates of C. pylori tested, originating from four geographic regions worldwide, produced cytotoxic activity. The activity was neutralisable by specific antisera to broth-culture filtrates or to sonicated bacteria but not by antisera to other bacterial preparations. Cytotoxic activity was heat-labile (70°C for 30 min), was protease-sensitive and ammonium-sulphate precipitable. It did not pass through an ultrafiltration membrane with a nominal mol.-wt limit of 100 x 103. It was concluded that C. pylori can produce a factor that alters cultured cells in vitro. The relevance of this factor to the pathogenesis of gastritis associated with C. pylori remains to be
Innovative solutions are necessary to enable the decentralized recycling of greywater for applications requiring high-quality water, such as hand washing. While physical barriers such as ultrafiltration membranes effectively prevent the passage of bacteria, and chemical and biological treatments can effectively reduce the carbon content of the treated water, there exists a knowledge gap regarding the application of anti-bacterial strategies to prevent the growth of harmful bacteria following treatment. In this study, the effluent water from a household-scale greywater treatment system was fed to seven parallel experimental post-treatment tanks: three receiving direct chlorination with free chlorine residuals of 0.2, 1 or 5 mg Cl2/L, three with chlorine produced through electrolysis at the same residual concentrations, and one control with no chlorine added. For increasing concentrations of direct chlorination, the median total cell count (TCC) values were 9 × 104, 2.9 × 104 and 1.8 × 103 ...
For the direct limit of a sequence of ultrapowers, see Ultraproduct. In mathematics, an ultralimit is a geometric construction that assigns to a sequence of metric spaces Xn a limiting metric space. The notion of an ultralimit captures the limiting behavior of finite configurations in the spaces Xn and uses an ultrafilter to avoid the process of repeatedly passing to subsequences to ensure convergence. An ultralimit is a generalization of the notion of Gromov-Hausdorff convergence of metric spaces. Recall that an ultrafilter ω on the set of natural numbers ℕ is a set of subsets of ℕ (whose inclusion function can thought of as a measure) which is closed under finite intersection, upwards-closed, and which, given any subset X of ℕ, contains either X or ℕ∖ X. An ultrafilter ω on ℕ is non-principal if it contains no finite set. Let ω be a non-principal ultrafilter on N {\displaystyle \mathbb {N} } . If ( x n ) n ∈ N {\displaystyle (x_{n})_{n\in \mathbb {N} }} is a sequence of points ...
Some of the compounds in the active fraction of ultrafiltrates of chick embryo extract have been identified as taurine, serine, glutamic acid, xanthine, uracil, glucose-6-phosphate, glucose, ferrous iron, and inorganic phosphate.. Based on the identity of these compounds a synthetic replacement for the ultrafilterable portion of chick embryo extract has been devised. There is an additional nutritional requirement that can be met by vitamin B12. Folic acid appears to be beneficial to the system though the requirements of this or any of the above compounds except vitamin B12 remain for future research. The low nitrogen content of the isolated fraction and the synthetic mixture suggests that the main nutrition of chick cells in roller tube cultures is derived from the non-dialyzable portion of the medium.. ...
* No Artificial Ingredients * Mixes Instantly * Ultrafiltered & Cross-Flow Microfiltered * High in Branched Chain Amino Acids * Added Glutamine * Strawberry * All Natural - No Aspartame, No Sucralose, No Acesulfame-KNOW Whey Protein is a delicious blend of three of the highest quality whey protein concentrates, isolates and hydrolysates from around the world: Ultrafiltered, Cross-Flow Microfiltered and Enzymatically Hydrolyzed (partially predigested). This blend of specially processed whey proteins is designed to maximize amino acid absorption and Biological Value (BV). Extra L-Glutamine has been added (380 mg per serving) because of its important role in protecting muscle tissue from breaking down under stressful, vigorous physical activity. Whey protein is considered to have the highest Biological Value of any protein source - superior to beef, milk, casein or soy. Since 1968, NOW has earned a valued reputation for producing quality products at reasonable prices. Our Quality Assurance and Quality
Sartorius has introduced a new generation of ultrafiltration devices. The disposable Vivaspin Turbo 15 is suited for protein, virus, or nanoparticle concentration, as well as desalting, dialysis, and buffer exchange. It is available in a range of volumes from 4 to 15 mL and permits easy and complete recovery of the concentrate, yet is a fast ultrafiltration device. LISTED UNDER: Filters, Filtration, & Water Purification ...
This study is comparing the effects of tolvaptan + furosemide, furosemide alone, and ultrafiltration on bodyweight in patients with acute decompensated heart
Investigations over three vintages indicated that White Riesling juice processed without SO2 and clarified by ultrafiltration (UF) tended to develop sediments upon storage. This study investigates the possible effect of oxidation (processing with or without sulfur dioxide) and pre-UF treatment of juices with enzymes and fining agents on juice flux, color (browning), composition, and stability. White Riesling juice was ultrafiltered with a Romicon Lab-5 pilot-scale hollow-fiber unit, operated in a batch mode, with membrane of nominal molecular weight cut-off (MWCO) of 10 000 daltons. Grapes were processed with and without SO2, and the effects of treatment of settled press juice with Rohapect VR Super (VRS, mainly pectinase and protease) and of fining with bentonite, gelatin, and silica sol before UF were investigated. Juice parameters evaluated included total protein, pectin, phenol, color (A420 nm), and stability to heat/cold testing. Pre-UF treatment with enzymes and fining increased flux. ...
The units for the Blood Flow Rate, Ultrafiltration Rate, and Replacement Rate settings are usually different from one another. They must first be converted to the same units as the Clearance.. The Plasma Concentration can be for any solute, but the actual value is unimportant; only the ratio to the Ultrafiltrate Concentration matters. (Note that protein binding will diminish actual clearance of specific solutes). Similarly, the units for Plasma Concentration and Ultrafiltrate Concentration cancel out and thus need not be specified. The Ultrafiltrate Concentration equals the Plasma Concentration times the Blood Flow Rate divided by the sum of the Blood Flow Rate and the Replacement Rate (after converting the units). This Ultrafiltrate Concentration would equal the concentration of that solute in the blood returning to the patient if there is no protein binding. If the protein binding is not insignificant, the Ultrafiltrate Concentration would be multiplied by quantity 1 - Protein Bound ...
RISINGSUN MEMBRANE TECHNOLOGY - Manufacturer,Supplier,Exporter of Regenerated Cellulose Membrane like Regenerated Cellulose UF Membrane Sheet, Ultrafiltration Uf Membrane at cost effective prices.
Membrane fouling is a critical limitation on the application of membranes to wastewater reuse. This work aims to understand the fouling phenomenon which occurs in ultrafiltration (UF; 17500 molecular weight cutoff (MWCO)) and nanofiltration (NF; 250 MWCO) membranes, with and without pretreatment. For this purpose, the molecular weight (MW) distribution of the organics has been used as a parameter to characterize the influent, the permeate, and the foulant on the membrane surface. The variation of foulant concentration on the membrane due to pretreatment of the influent by flocculation and/or adsorption was investigated in detail. With the UF membrane, the peak of the MW distribution of organics in the permeate depended on the pretreatment; for example, the weight-averaged MW (Mw) of 675 without pretreatment shifted down to 314 with pretreatment. In the case of the NF membrane, the Mw of organics in the permeate was 478 (without pretreatment) and 310 (with flocculation followed by adsorption). ...
The objective of the study was to compare the antioxidant activity of two distinct hydrolysates and their peptide fractions prepared by ultrafiltration (UF) using membranes with molecular weight cut-off of 5 and 1 kDa. The hydrolysates were a delipidated egg yolk protein concentrate (EYP) intensively hydrolyzed with a combination of two bacterial proteases, and a phosphoproteins (PPP) extract partially hydrolyzed with trypsin. Antioxidant activity, as determined by the oxygen radical absorbance capacity (ORAC) assay, was low for EYP and PPP hydrolysates with values of 613.1 and 489.2 µM TE×g−1 protein, respectively. UF-fractionation of EYP hydrolysate increased slightly the antioxidant activity in permeate fractions (720.5-867.8 µM TE×g−1 protein). However, ORAC values were increased by more than 3-fold in UF-fractions prepared from PPP hydrolysate, which were enriched in peptides with molecular weight lower than 5 kDa. These UF-fractions were characterized by their lower N/P atomic ratio and
UNLABELLED: Extracellular vesicles (EVs) are natural nanoparticles that mediate intercellular transfer of RNA and proteins and are of great medical interest; serving as novel biomarkers and potential therapeutic agents. However, there is little consensus on the most appropriate method to isolate high-yield and high-purity EVs from various biological fluids. Here, we describe a systematic comparison between two protocols for EV purification: ultrafiltration with subsequent liquid chromatography (UF-LC) and differential ultracentrifugation (UC). A significantly higher EV yield resulted from UF-LC as compared to UC, without affecting vesicle protein composition. Importantly, we provide novel evidence that, in contrast to UC-purified EVs, the biophysical properties of UF-LC-purified EVs are preserved, leading to a different in vivo biodistribution, with less accumulation in lungs. Finally, we show that UF-LC is scalable and adaptable for EV isolation from complex media types such as stem cell media, which
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EMD Millipore™ Ultracel™ Ultrafiltration Disc Ultracel PL100; 100kDA NMWL; Filter dia.: 44.5mm EMD Millipore™ Ultracel™...
Crystal Quest Turbo Ultrafiltration Floor Water Cooler An online resource to buy Goodman heat pumps, geothermal heat pumps, split system heat pumps and Goodman air conditioners. Where homeowners buy at wholesale price.
Blood conservation strategies have become a standard of practice in cardiac surgery, with the use of antifibrinolytic agents and ultrafiltration two popular techniques. The purpose of this study was to evaluate the effects of continuous ultrafiltrati
Editorial. Comments on the inclusion of abstracts from the Australasian Society of Cardiovascular Perfusionist annual scientific meeting in Sidney, New South Wales. Collaboration between the organization and the periodical Perfusion; Article on ultrafiltration in pediatric cardiac surgical practice ...
Chloramines, a combination of chlorine and ammonia, cause distinct off tastes and odors in ingredient water. The VZN chloramine series features a specially designed activated carbon cartridge to remove chloramines from the water. This cartridge follows the self-cleaning ultrafilter and ensures premium quality water to the operations beverage portfolio.
Chloramines, a combination of chlorine and ammonia, cause distinct off tastes and odors in ingredient water. The VZN chloramine series features a specially designed activated carbon cartridge to remove chloramines from the water. This cartridge follows the self-cleaning ultrafilter and ensures premium quality water to the operations beverage portfolio.
Amicon 25 MG Tablet is used for depression, migraine prevention, bed wetting etc. Know Amicon 25 MG Tablet uses, side-effects, composition, substitutes, drug interactions, precautions, dosage, warnings only on | Practo
We offer a wide range of UF systems as per customer requirement, we design Ultrafiltration plants for various applications like RO pre-treatment, drinking water, ETP, STP, and customized requirement.. Ultrafiltration is a separation process using membranes with pore sizes in the range of 0.1 to 0.001 micron. Typically, ultrafiltration will remove high molecular-weight substances, colloidal materials, and organic and inorganic polymeric molecules. Low molecular-weight organics and ions such as sodium, calcium, magnesium chloride, and sulfate are not removed. ...
With our C-CUT capillary modules with membranes made from PVDF, PES and PP, we provide a high quality product line to our customers, which has been especially developed for applications where a combination of filtration performance and high packing density is required. Due to the high stability of the membrane and the possibility to clean this membrane chemically as well as mechanically and to backwash it, C-CUT capillary modules are preferentially used for cleaning of process water and in wine and vinegar filtration. They are also successfully applied in diafiltration and in degreasing baths. We are glad to offer you customized modules, tailored to your specific separation task.
Who We Are Founded in 1977, we are a family-run company that has been formulating and manufacturing proven nutritional products for dedicated athletes. Our products are found in over 90 countries around the world. Classic Series Since the 70s, weve been dedicated to making some of the finest nutritional products for world-class bodybuilders. Today, the new Classic Series still represents our steadfast commitment to those individuals seeking to achieve strength and perfection in the gym. Ultra Whey Pro Ultra Whey Pro® provides an excellent and complete source of amino acids. Every scoop delivers 25 grams of protein derived from our proprietary Pure Whey™ protein blend, a unique matrix comprised of ultra-filtered whey isolates, peptide-rich whey hydrolysates, and whey concentrate. For maximum biological value (BV), Ultra Whey Pro® has been ultrafiltered and processed at the lowest possible temperatures to prevent the denaturing of the protein. ...
Buy Whey Protein 2 Powder & other Whey Protein. Jarrow Formulas Whey Protein is a 100% natural protein concentrate of whey, from cows not treated with growth hormone (rBST), and is ultrafiltered to be low in fat, lactose and carbohydrates.
Peritoneal ultrafiltration in end-stage congestive heart failure. as in case of chronic dialysis for end-stage . P eritoneal ultra ltration in end-stage
Amicon Ultra diafiltration centrifugal concentrators load with a standard pipette, provide buffer exchange in two spins, and simultaneously concentrate and desalt.
Lignin, which is the second most abundant biomass component and has carbon-rich phenolic content, is a promising renewable raw material for multiple applications, such as carbon fibers, adhesives, and emulsifiers. To use lignin efficiently, it is important to ensure its purity and homogeneity. As a result, the separation of lignin into fractions with high purity and narrow molecular-weight distributions is likely a prerequisite for several applications. Ultrafiltration using ceramic membranes has many advantages, including enabling direct lignin extraction from Kraft pulp cooking liquors without pH and temperature adjustment. One challenge with membrane filtration using such a system is the potential for reduced membrane performance over time, which is associated with fouling. In this study, LignoBoost Kraft lignin was fractionated using a ceramic membrane with a molecular weight cut-off of 1 kDa. The separation behavior during ultrafiltration fractionation was investigated and the antioxidant ...
Reliable, efficient and easy sample preparation is a crucial step for achieving optimal and reproducible results in proteomics.. SERVA BluePrep Major Serum Protein Removal Kit, based on an innovative technology, provides a fast and simple procedure for the effective depletion of albumin, alpha-antitrypsin, transferrin and haptoglobulin from serum and plasma samples.. Remove excess detergents and concentrate your protein in only 10 minutes with the Proteus Detergent Anion Exchange Mini Spin Column Kit.. Residual endotoxin contamination in advanced biotherapy products is an expensive and often difficult contaminant to control. Next generation Proteus NoEndo™-Kits combine the quality separation you expect from gravity flow columns with the speed and ease-of-use of spin columns.. Ultrafiltration is a fast and simple method for simultaneous concentration of proteins and removal of low molecular weight substances. The unique design of the Proteus X-Spinner Ultrafiltration Concentrators allows not ...
Reliable, efficient and easy sample preparation is a crucial step for achieving optimal and reproducible results in proteomics.. SERVA BluePrep Major Serum Protein Removal Kit, based on an innovative technology, provides a fast and simple procedure for the effective depletion of albumin, alpha-antitrypsin, transferrin and haptoglobulin from serum and plasma samples.. Remove excess detergents and concentrate your protein in only 10 minutes with the Proteus Detergent Anion Exchange Mini Spin Column Kit.. Residual endotoxin contamination in advanced biotherapy products is an expensive and often difficult contaminant to control. Next generation Proteus NoEndo™-Kits combine the quality separation you expect from gravity flow columns with the speed and ease-of-use of spin columns.. Ultrafiltration is a fast and simple method for simultaneous concentration of proteins and removal of low molecular weight substances. The unique design of the Proteus X-Spinner Ultrafiltration Concentrators allows not ...
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Blood travels in to the glomerulus via the afferent arteriole. As it is under high pressure, molecules with an RMM of less than 69,000 are pushed throught the pores in the basement membrane which acts as a filter. The podocytes (epithelial cells of the Bowmans capsule) have finger-like projections (called major processes) that ensure there are gaps so that the fluid from the blood from the glomerulus (that has been filtered) can pass in to the lumen of the Bowmans capsule ...
Abstract. In-line coagulation adsorption (ILCA) followed by ceramic microfiltration (CMF) was tested at pilot scale and compared to a full scale traditional pr
Ultrafiltration is a true physical exclusion process and not reliant upon osmotic principles. UF membranes are categorized by their molecular weight cut-off rating (MWCO). The typical range of MWCOs for UF is from 1,000 to 1,000,000 Daltons, which correlates to approximately 0.005 to 0.1 micron (µm). UF is extremely effective in removing suspended solids, colloids, bacteria, viruses, cysts and high molecular weight organics like tannins. UF membranes are operated in dead-end configuration, occasional flush (forward flush and/or backflush) or crossflow configuration. Membrane configuration can vary between manufacturers, but the hollow-fiber type is the most commonly used. Membranes in this category are cast into small-diameter tubes or straws. Thousands of these straws are bundled together and the ends are bonded/potted into an epoxy bulkhead. The bundles are then sealed into a housing, usually PVC or stainless steel. The sealed potting creates a separate, sealed space that isolates access to ...
Health management and winning practice articles, value-based healthcare, healthcare events, company and product directory, I-I-I videos and I-I-I blog interviews.
Pressotherapy; Exclusive detoxifying treatment, which through effective lymphatic drainage, helps to promote the bodys natural toxin clearing functions. The revitalization and oxygenation of the tissue helps to slim and redefine the legs, stomach, and arms while enhancing skin tone.. ...
Brand and model: Alfa Laval-LabStakM20.. Capacity: 5-50 L.. Description: The system is equipped with a high- pressure pump, 7.5-liter tank, heat exchanger, valves, gauges, and a manual hydraulic pump. Its design allows to use flat or spiral membranes for reverse osmosis, nanofiltration, ultrafiltration and microfiltration processes.. The sample to be filtered is deposited in the tank and driven by a centrifugal pump. The sample temperature is regulated by a heat exchanger of the shell and tube, using water as coolant. The permeate or filtered fluid can be returned to the feed tank, to operate the equipment in recirculation mode, or be fed into a new vessel to operate in concentration mode.. ...
A comparison of characteristics between reverse osmosis, nanofiltration, ultrafiltration, and microfiltration membrane technologies.
100% Whey Isolate manufactured using an advanced low temperature cross flow microfiltration, ultrafiltration, and diafiltration process.
Native S-layer proteins have already been used three decades ago in the development of biosensors and ultrafiltration membranes ... Sára M, Sleytr, UB (1987). "Production and characteristics of ultrafiltration membranes with uniform pores from two-dimensional ... Schuster B, Sleytr UB (2021). "S-Layer Ultrafiltration Membranes". Membranes. 11 (4): 275. doi:10.3390/membranes11040275.. ...
Ultrafiltration removes particles higher than 0.005-2 µm and operates within a range of 70-700kPa. Ultrafiltration is used for ... Some ultrafiltration membranes have also been used to remove dissolved compounds with high molecular weight, such as proteins ... The first use of membranes on a large scale was with micro-filtration and ultra-filtration technologies. Since the 1980s, these ... Depending on the pore size, they can be classified as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF) and ...
ultrafiltration. 1-10 bar. bacteria, macromolecules, proteins, larger viruses 2-1 nm. 0.1-5 kDa. nanofiltration. 3-20 bar. ... Munir Cheryan, Handbuch Ultrafiltration, Behr, 1990, ISBN 3-925673-87-3.. *Eberhard Staude, Membranen und Membranprozesse, VCH ... Microfiltration and ultrafiltration is widely used in food and beverage processing (beer microfiltration, apple juice ... Membranes which function according to this principle are used mainly in micro- and ultrafiltration. They are used to separate ...
Journal of the American Leather Chemists Association, 20, 490-4. Thomas, A. W., & Kelly, M. W. (1926). Ultrafiltration of ...
Concentration can be made by ultrafiltration. Purification can be achieved by preparative chromatography. Phosphomolybdic acid ... "Extraction of polyphenols from grape seeds and concentration by ultrafiltration". Separation and Purification Technology. 48 (2 ...
Purification is achieved by ultrafiltration/diafiltration. Since its introduction the vaccine has had a dramatic impact on the ...
Specifically, ultra filtration allows the smaller lactose, water, mineral, and vitamin molecules to pass through the membrane, ... Ultrafiltration makes cheese manufacturing more efficient. Ultrafiltered milk is also sold directly to consumers under brands ... According to at least one publication, ultrafiltration and diafiltration are synonymous terms. Johnson, Kelsey (April 22, 2017 ...
The renal cortex, between the renal capsule and the renal medulla; assists in ultrafiltration ...
Ultrafiltration and Microfiltration Handbook, CRC Press, Florida, p. 352-407. Tian, J, Ernst, M, Cui, F, & Jekel, M 2013 'KMnO4 ... in Ultrafiltration and Microfiltration Handbook' 2nd edn., CRC Press, Florida, p.1-9. Perry, RH & Green, DW, 2007. Perry's ... The main of which are described in general below: Ultrafiltration membranes have pore sizes ranging from 0.1 μm to 0.01 μm and ... Microfiltration and Ultrafiltration Membranes in Drinking Water (M53) (Awwa Manual) (Manual of Water Supply Practices). 1st ed ...
Ultrafiltration Costanzo MR, Guglin ME, Saltzberg MT, et al. (Feb 2007). "Ultrafiltration versus intravenous diuretics for ... Using a form of ultrafiltration, the filter separates the excess salt and water from the blood and the blood is returned to the ... Dec 2005). "Ultrafiltration versus usual care for hospitalized patients with heart failure: the Relief for Acutely Fluid- ... Feb 1993). "Isolated ultrafiltration in moderate congestive heart failure". J Am Coll Cardiol. 21 (2): 424-31. doi:10.1016/0735 ...
Particles can be controlled by filtration and ultrafiltration. Sources can include bacterial fragments, the sloughing of the ... The common types of filtration are multi-media, automatic backwashable filters and ultrafiltration for suspended solids removal ... and ultrafiltration to achieve the required particle level. Some semiconductor Fabs require hot UPW for some of their processes ... ultrafiltration (found in some pharmaceutical, but mostly semiconductor industries), ozonation, and optimization of piping ...
Upon arrival in Oxford, Higham became involved in testing and improving the ultrafiltration method for dating archaeological ... Higham, TFG; Jacobi, RM; Bronk Ramsey, C (2006). "AMS Radiocarbon Dating of Ancient Bone Using Ultrafiltration". Radiocarbon. ... Jacobi, RM; Higham, TFG (2008). "The 'Red Lady' ages gracefully: new ultrafiltration AMS determinations from Paviland". Journal ... improved reliability using ultrafiltration". Journal of Quaternary Science. 21 (5): 557-573. doi:10.1002/jqs.1037. ...
Ultra filtration is an alternative to the centrifugation. Cell disruption: If the desired product is intra cellular the cell ...
Solute retardation by ultrafiltration and electrophoresis. AIChE Journal, vol. 20, p. 776. W.J. Cao, P.S. Williams, M. N. Myers ...
Blatt, W.F.; Robinson, S.M.; Bixler, Harris J. (Oct 1968). "Membrane ultrafiltration: The diafiltration technique and its ... Shao, Jiahui; Zydney, Andrew L. (2004). "Optimization of Ultrafiltration/Diafiltration Processes for Partially Bound Impurities ...
Ultrafiltration concentrates a protein solution using selective permeable membranes. The function of the membrane is to let the ...
3. Design of pilot scale nanfiltration and ultrafiltration units. 4. Design of pilot unit for ceramic membrane filtration. 5. ... Membrane separations (analysis, design and development of ultrafiltration / reverse osmosis systems), Application of ...
Proteins can also be separated by size in a tangential flow filtration or an ultrafiltration. Single proteins can be isolated ... ISBN 978-1-59259-027-8. Ghosh Raja (11 June 2003). Protein Bioseparation Using Ultrafiltration: Theory, Applications And New ...
... total solids before ultrafiltration processing. The ultrafiltration retentate can then be used to make various whey powders, ... Ultrafiltration removes particles of roughly 3 nm or larger. Nanofiltration removes particles of 1 nm or larger. Reverse ... Additionally, the ultrafiltration permeate, which contains lactose, is concentrated by reverse osmosis from 5% total solids to ...
In such case filtration or ultrafiltration may be required. Although, flocculation may be used, using alum salts or the ... either general membrane treatments like ultrafiltration or reverse osmosis or treatments to remove specific contaminants, such ...
The sample is therefore concentrated by ultrafiltration or dialysis. Most of the charged impurities are usually anions such as ...
Sources: Knops, F. N. M.; Franklin, B. (2000). "Ultrafiltration for 90 MLD Cryptosporidium- and Giardia- free Drinking Water, A ... Treatment facilities included ultrafiltration, modification of plumbosolvency, disinfection and chlorination. The works were ...
In general, ultrafiltration devices filter the patient's anticoagulated whole blood. The filter process removes unwanted excess ... Presently, the only whole blood ultrafiltration device in clinical use is the Hemobag. These devices do not totally remove ... Eichert I, Isgro F, Kiessling AH, Saggau W (June 2001). "Cell saver, ultrafiltration and direct transfusion: comparative study ... Colli A, Balduzzi S, Ruyra X (2012). "The Hemobag: the modern ultrafiltration system for patients undergoing cardiopulmonary by ...
... and twenty percent is produced through the ultrafiltration of plasma. Intraocular pressure affects the rate of ultrafiltration ...
Michael William Pritchard, Entrepreneur and Inventor, lifesaver Ultra-filtration Bottle. For services to Innovation and ...
In general, ultrafiltration devices filter the patient's anticoagulated whole blood. Direct transfusion is a blood salvaging ...
... ultrafiltration, microfiltration, or nanofiltration so that the membrane's performance is degraded. It is a major obstacle to ... "Fouling of Reverse Osmosis and Ultrafiltration Membranes: A Critical Review". Separation Science and Technology. 39 (10): 2261- ...
... modern-day practises use ultrafiltration to achieve this result . In addition to increasing the consistency, the process serves ...
A series of three ultrafiltration membranes are used to filter out proteins with a molecular weight of 5,000 Daltons and higher ... The feed pressure to each ultrafiltration membrane is 60 psia. Using these feed pressures and temperatures, typical ... microfiltration and ultrafiltration, ion exchange, flash evaporation, and distillation. The first of the two filtration steps, ... and 26 LMH for the ultrafiltration membrane. The next step of the scheme, ion exchange, removes impurities that cause the ...
... from wastewater by polyvinylamine-enhanced ultrafiltration". Separation and Purification Technology. 154: 1-10. doi:10.1016/j. ...
Ultrafiltration membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. Ultrafiltration is applied ... Blood dialysis also utilizes ultrafiltration. Ultrafiltration can be used for the removal of particulates and macromolecules ... Ultrafiltration modules have also been improved to allow for more membrane for a given area without increasing its risk of ... Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a ...
Slow Continuous Ultrafiltration (SCUF) is an artificial method which approximately mimics the ultrafiltration function of the ... Ultrafiltration (industrial) Ultrafiltration Aquapheresis Koushanpour, Esmail (1986). Renal Physiology. New York: Springer- ... In renal physiology, ultrafiltration occurs at the barrier between the blood and the filtrate in the glomerular capsule ( ... This process is called ultrafiltration; the resulting fluid, virtually free of large proteins and blood cells, is referred to ...
The bottle is the worlds first ultra filtration water bottle, and the inventor put all of his life savings into developing it. ...
Ultrafiltration definition is - filtration through a medium (such as a semipermeable capillary wall) which allows small ... Examples of ultrafiltration in a Sentence. Recent Examples on the Web Its Tetra Pak ultrafiltration system developed in Iceland ... Post the Definition of ultrafiltration to Facebook Share the Definition of ultrafiltration on Twitter ... 2021 Master Water products include water softeners, filters and ultrafiltration systems, which are sold under the names ...
EMD Millipore™ Ultracel™ Ultrafiltration Disc Use to concentrate or desalt dilute solutions with the Stirred Cell device ... EMD Millipore™ Biomax™ Ultrafiltration Membrane Discs Recommended for concentrating or desalting higher volumes of more ... EMD Millipore™ Ultrafiltration Membranes - Amicon™ XM Polyacrylonitrile/PVC Copolymer Filters High-recovery membranes for ... EMD Millipore™ Prep/Scale Spiral-Wound Ultrafiltration Modules: TFF-6 Simple design for easy setup in TFF systems ...
Patented dead-stop ultrafiltration devices. Stay safe with Vivaspin Ultrafiltration Family of concentrators ... Ultimate solutions for your Ultrafiltration needs. Sartorius offers you many perfect solutions for your ultrafiltration needs ... We invite you to examine our extensive portfolio of ultrafiltration devices, and technologies. Experience the design innovation ... Pressurization, centrifugation or both - with Vivacell ultrafiltration systems. *Secure and ultrafast concentration through ...
... is a pressure-driven purification process that separates particulate matter from soluble compounds using ... Our powerful ultrafiltration product portfolio features IntegraFlux™ Ultrafiltration Modules and IntegraPac™ Ultrafiltration ... Our ultrafiltration modules are made with high-strength, hollow-fiber ultrafiltration membranes that offer the following ... Our ultrafiltration modules are made with high-strength, hollow-fiber ultrafiltration membranes that offer the following ...
An ultrafiltration device adapted to be worn on a portion of the body of a patient includes a blood inlet tube leading from a ... 9. The ultrafiltration device of claim 6. , further adapted to comprise a battery for powering the ultrafiltration device. ... an ultrafiltration filter that receives blood from the shuttle pump, the ultrafiltration filter comprising a plurality of ... a blood ultrafiltration filter that receives blood forced from the shuttle pump, the blood ultrafiltration filter constructed ...
Results for ultrafiltration system equipment from A.B.E BioFree, ADVANCEES, Altech and other leading brands. Compare and ... Mittem - Ultrafiltration Systems. Ultrafiltration systems can be used to treat surface water. Besides that UF modules are used ... Ultrafiltration System. Ultrafiltration is a modern alternative to the clas sical sand and multimedia filters like the reverse ... Ultrafiltration Systems. Ultrafiltration is a membrane separation process which removes particles such as fine silt and ...
In the ultrafiltration (UF) of disperse dye solutions using ceramic membrane, backflushing is necessary to minimize the ... Ultrafiltration membrane technology emerged as the best viable alternative and was selected to improve the quality of the ... The use of ultrafiltration (UF) is receiving more attention for drinking water treatment, but its fouling remains a problem. ... Three different water treatment ultrafiltration (UF) pilot plants were investigated to treat algae-rich reservoir water. ...
What ultrafiltration method is best suited for virus concentration? Get the answers to these questions and more in our FAQs for ...
Ultrafiltration in decompensated heart failure with cardiorenal syndrome.. Bart BA1, Goldsmith SR, Lee KL, Givertz MM, OConnor ... Ultrafiltration was inferior to pharmacologic therapy with respect to the bivariate end point of the change in the serum ... Ultrafiltration was associated with a higher rate of adverse events. (Funded by the National Heart, Lung, and Blood Institute; ... Drugs outperform ultrafiltration in acute cardiorenal syndrome. [Nat Rev Cardiol. 2013]. *Heart failure: Drugs outperform ...
Results for ultrafiltration software from B-Smart, HYDRAcap MAX, MASAR ultra and other leading brands for water and wastewater ... HYDRAcap MAX - Ultrafiltration Membrane Simulation Software. HYDRAcap MAX ultra-filtration membrane simulator is Hydranautics ... Thats why we decided to incorporate all of our know-how into a software package to help you plan your ultrafiltration facility ... as well as Ultrafiltration (UF) and Microfiltration (MF) membrane systems of brackish and seawater water purification plants ...
MilliporeSigma: Ultrafiltration Revealed. MilliporeSigma: Ultrafiltration Revealed. Its about more than just the membrane!. ... Ultrafiltration is so much more than the diffusion of a sample across a semi-permeable membrane. Find out more about why your ...
A system for measuring the rate of ultrafiltration through a semipermeable membrane of a first fluid flowing across one surface ... Rate of ultrafiltration of water is independent of the flow rate of dialysate solution across the membrane. Therefore, rate of ... CONTROL OF ULTRAFILTRATION RATES DURING HEMODIALYSIS WITH HIGHLY PERMEABLE MEMBRANES. 1974-03-05. Crane et al.. ... 2 is a circuit diagram for a portion of the invention for measuring the rate of ultrafiltration; FIG. 3 is another schematic ...
... ultrafiltration devices separate free from protein-bound micro-solute in small volumes of serum, plasma, and other biological ... Centrifree® Ultrafiltration. With the clinical laboratory in mind, we designed Centrifree® devices to rapidly and efficiently ... Life Science > Protein Sample Preparation > Protein Concentration > Centrifree® Ultrafiltration for Clinical Samples ... Minicon® concentrators are non-sterile, disposable, multiwell ultrafiltration devices designed for concentrating macromolecules ...
Dialysis and Ultrafiltration. Current Protocols in Molecular Biology. 41:3C:A.3C.1-A.3C.7. ...
The Role of Ultrafiltration in Patients with Decompensated Heart Failure. Sandeep A. Kamath ... Sandeep A. Kamath, "The Role of Ultrafiltration in Patients with Decompensated Heart Failure," International Journal of ...
Microfiltration and ultrafiltration have gained rapid acceptance as processes that provide a reliable and very high level of ... Microfiltration and ultrafiltration have gained rapid acceptance as processes that provide a reliable and very high level of ... M53 Microfiltration and Ultrafiltration Membranes for Drinking Water, Second Edition ...More Information ... Back to M53 Microfiltration and Ultrafiltration Membranes for Drinking Water, Second Edition ...
Ultrafiltration devices are utilize Spectrum Chemical has a complete line of laboratory supplies, equipment and safety items. ... Spectrum offers laboratory grade Ultrafiltration supplies and accessories from the industrys leading manufacturer, Sartorius. ... Ultrafiltration Supplies and Accessories Ultrafiltration Supplies and Accessories. Spectrum offers laboratory grade ... Ultrafiltration devices are utilized for concentration and buffer exchange, desalting of proteins, DNA, viruses and other ...
During a Dow Water Academy webinar on Dow Chemical Company representatives discussed the benefits of ultrafiltration (UF) in ... ContaminantFiltrationIndustrialMunicipalReuseUltrafiltrationWater Wise Webinar summary: Water reuse and ultrafiltration. Water ... Ultrafiltration pilot reveals cause and solution for downtime at vegetable cutting plant. Sponsored by 3M, March 13, 2018 ... discussed the benefits of ultrafiltration (UF) in water reuse applications. ...
Clear and germ-free water with ultrafiltration systems GENO®-Ultrafil Ultrafiltration is a filtration process from the field of ... Thanks to a pore size of less than 0.01 µm, the ultrafiltration process is particularly suited to retain microbiological loads. ...
The apparatus for ultrafiltration of the blood 197 is similar to the filter shown in FIGS. 3 and 4. The apparatus is equipped ... Methods for ultrafiltration control in hemodialysis. US5792367 *. Feb 17, 1995. Aug 11, 1998. Gambro Ab. System and method for ... Ultrafiltration controllers ensure the rate of fluid removal from a patients blood is close to the fluid removal setting that ... 3 and 4 show filter 111 of an ultrafiltration device having a filter membrane 304. In the filter, the blood flows through the ...
Coagulant, deinking, effluent, flexography, magazines, newspapers, ultrafiltration, washing. Related Search. *Flexographic ... Coagulation pretreatment for ultrafiltration of deinking effluents containing flexographic inks. Progress in paper recycling. ( ... and colloidal substances removals were not sensitive enough to establish a correlation between substance removal and ultra-filtration ... flexographic and offset newspapers and old magazines were pretreated with a cationic coagulant and alum before ultrafiltration ...
Peritoneal Ultrafiltration in Cardio Renal Syndrome. (PURE). The safety and scientific validity of this study is the ... Peritoneal Ultrafiltration in Cardio Renal Syndrome to Prevent Heart Failure Exacerbation.. Estimated Study Start Date :. ... The PUF ultrafiltration will be performed with a single nightly exchange, with 2 liters PolyCore solution, lasting 12-14 hours ... PolyCore peritoneal ultrafiltration (PUF) (over the top of patients prescribed heart failure medications), for 6 months. ...
Parathyroid Hormone Oncotic Pressure Glomerular Mesangial Cell Single Nephron Glomerular Ultrafiltration This is a preview of ... I. Ichikawa, H.D. Humes, T.P. Dousa and B.M. Brenner, Influence of parathyroid hormone on glomerular ultrafiltration in the rat ... Ichikawa I., Schor N., Brenner B.M. (1982) Effects of Parathyroid Hormone on Glomerular Ultrafiltration in the Rat. In: Massry ... R.C. Blantz, K.S. Konnen, and B.J. Tucker, Angiotensin II effects upon the glomerular microcirculation and ultrafiltration ...
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Plasma protein binding of (R)-warfarin was measured by ultrafiltration [19].. *Using ultrafiltration dialysis followed by ... Gene context of Ultrafiltration. *IGFBP-bound IGFs are dissociated and separated by acid pH ultrafiltration, and a monoclonal ... Chemical compound and disease context of Ultrafiltration. *Sorbinil does not prevent hyperfiltration, elevated ultrafiltration ... Disease relevance of Ultrafiltration. *Preservation of the glomerular capillary ultrafiltration coefficient during rat ...
3.3 l; p = 0.001) were greater in the ultrafiltration group. Dyspnea scores were similar. At 90 days, the ultrafiltration group ... Ultrafiltration versus intravenous diuretics for patients hospitalized for acute decompensated heart failure.. Costanzo MR1, ... Early ultrafiltration may be an alternative to intravenous diuretics in patients with decompensated HF and volume overload. ... In decompensated HF, ultrafiltration safely produces greater weight and fluid loss than intravenous diuretics, reduces 90-day ...
  • Ultrafiltration membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. (wikipedia.org)
  • Ultrafiltration membranes have a service life of three to seven years (and potentially longer). (dupont.com)
  • The hollow fiber ultrafiltration membranes are 1.3 mm outside diameter and 0.7 mm inside diameter and are made from PVDF polymer. (dupont.com)
  • Efficiently designed low-pressure membrane filtration (ultrafiltration / microfiltration) systems use hollow fiber membranes with small pore sizes (0.01-0.1 µm) to reliably produce high quality water using an absolute barrier. (environmental-expert.com)
  • It is based on the ultrafiltration (UF) technology using low-fouling hollow fiber membranes 'outside-in' type and can produce high quality potable water. (environmental-expert.com)
  • infrastructure of the pretreatment section of the plant and ultrafiltration membranes were installed and operated. (lenntech.com)
  • Choose between centrifugal, pressure-driven, and crossflow units as well as a choice of different ultrafiltration membranes and MWCOs. (spectrumchemical.com)
  • In this work, milk protein concentrate (MPC) was made using wide-pore negatively charged ultrafiltration membranes. (mdpi.com)
  • Etzel, M.R. Milk Protein Concentration Using Negatively Charged Ultrafiltration Membranes. (mdpi.com)
  • These courses provide an in-depth study of the microfiltration and ultrafiltration membranes typically used in the Pharmaceutical, Microelectronic, Food and Beverage, Water and Waste Water, Chemical, Laboratory, and Medical Markets. (nanowerk.com)
  • With this in mind, a joint research project, funded by the Water Research Commission (WRC), was initiated in 1996 and succeeded to develop suitable and cost-effective, locally produced, ultrafiltration membranes and filtration systems for use in water treatment and industrial water management. (wrc.org.za)
  • These ultrafiltration purification systems are capable of removing particulate matter, colour, bacteria (such as cholera), viruses and parasitic micro-organisms without the need to add chemicals'' says Mr Andrew Theunissen, Chairman of Ikusasa Water, the company manufacturing these membranes: "Purification systems using these membranes will be able to meet any drinking water supply need of communities and advanced treatment requirements for industrial applications. (wrc.org.za)
  • Ikusasa obtained the licence from the WRC to produce capillary ultrafiltration membranes and membrane systems developed over a period of ten years by the University of Stellenbosch. (wrc.org.za)
  • Residual flocs from the coagulation were separated with sand filtration, and afterward, the effluent was treated with six ultrafiltration membranes. (bioportfolio.com)
  • Ultrafiltration (UF) is a low-pressure purification process that uses membranes to separate fine substances based on size and ionic charge. (pharmtech.com)
  • MEUF is a separation processes which uses surfactants and ultrafiltration membranes to remove multivalent ions from wastewater with high percent rejection using electrostatic attraction between metals and micelles. (degruyter.com)
  • Membranes utilized in the ultrafiltration process have the porosity of 0,1 to 0,01 µm. (bkg.cz)
  • Operation of the ultrafiltration membranes is cyclic, so after the filtration phase comes the wash phase - exactly backwashing. (bkg.cz)
  • Wheat-germ extract for cell-free protein synthesis was condensed with ultrafiltration membranes of which the molecular cut-off values were 10 kDa, 100 kDa, and 300 kDa. (nih.gov)
  • 47 mm Membrane Diameter Ultrafiltration Membrane Disc Filters, Pall Life Sciences : Replacement membranes for conventional, nondisposable stirred cell systems. (egeneralmedical.com)
  • These membranes are used for microfiltration, ultrafiltration or gas separation. (patentgenius.com)
  • The primary objective of this study was to extend previous research which investigated the use of ultrafiltration (UF) membranes for secondary effluent treatment for water reuse purposes. (uwaterloo.ca)
  • When Beijing airport's water supply system needed an upgrade, the customer chose to use the same inge ultrafiltration modules/membranes as replacements. (filtsep.com)
  • Flat sheet ultrafiltration (UF) membranes with photocatalytic properties were prepared with lab-made TiO2 and graphene oxide-TiO2 (GOT), and also with a reference TiO2 photocatalyst from Evonik (P25). (up.pt)
  • Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. (wikipedia.org)
  • Ultrafiltration (UF) is a variety of membrane filtration in which hydrostatic pressure forces a liquid against a semipermeable membrane. (environmental-expert.com)
  • Ultrafiltration is a filtration process from the field of membrane technology, by which macromolecular substances and small particles can be separated from the water and can be concentrated. (gruenbeck.de)
  • Microfiltration (MF) and ultrafiltration (UF) are new filtration technologies, different from NF and RO, which are currently being taken up rapidly by some of the major operators. (spe.org)
  • This type of high pressure filtration is ultrafiltration. (wikidoc.org)
  • The filtration models have been tested by conducting dead-end and cross flow ultrafiltration experiments with protein dispersions of BSA and lactoferrin. (bl.uk)
  • Rendering plant wastewater reclamation by coagulation, sand filtration, and ultrafiltration. (bioportfolio.com)
  • The rendering plant secondary effluent (SE) was reclaimed with coagulation, sand filtration and ultrafiltration for reuse in the plant and for potential reuse in irrigation. (bioportfolio.com)
  • Normal flow filtration (NFF) and tangential flow filtration (TFF) are two widely adopted ultrafiltration platforms that are related, but differ in fluid stream flow mechanics. (pharmtech.com)
  • Ultrafiltration Membrane Filtration Market report delivers an in-depth analysis of pharmaceuticals and Healthcare industry prospects in the Global Ultrafiltration Membrane Filtration market . (pharmiweb.com)
  • This Ultrafiltration Membrane Filtration Market study is prepared to help the new and existing key players in the Ultrafiltration Membrane Filtration Market that will help in making current business decisions as well as to sustain in the severe competition of the Ultrafiltration Membrane Filtration Market. (pharmiweb.com)
  • The report also focuses on the main product, geographical segments, applications, and the competitive analysis of the Ultrafiltration Membrane Filtration Market that are stated in the study. (pharmiweb.com)
  • Ultrafiltration Membrane Filtration Market especially assists by providing a brief insight into innovations, opportunities and new improvements in the Ultrafiltration Membrane Filtration Market and its interconnected market. (pharmiweb.com)
  • There is a regional and a global study of fundamental trends and dynamics of Ultrafiltration Membrane Filtration market for the given forecast period. (pharmiweb.com)
  • On the basis of Products , the Global Ultrafiltration Membrane Filtration market is broadly segmented into Inorganic Membrane and Organic Membrane . (pharmiweb.com)
  • The report focuses on consumption, market share, and growth rate of Ultrafiltration Membrane Filtration in each application and can be divided as Industrial & Municipal, Food & Beverage, Potable Water Treatment, Seawater Reverse Osmosis and Healthcare & Bioengineering . (pharmiweb.com)
  • Finally , the Ultrafiltration Membrane Filtration Market report affords detailed analysis for changing competitive dynamics of Ultrafiltration Membrane Filtration. (pharmiweb.com)
  • It provides a forward-looking perspective on distinct factors driving Ultrafiltration Membrane Filtration Market growth. (pharmiweb.com)
  • The Ultrafiltration Membrane Filtration industry provides a forecast assessed based on predicted grow, It helps in understanding the key product segments and their future. (pharmiweb.com)
  • Process of filtration in which a medium (semipermeable) which allows small molecules to pass through is called ultrafiltration. (omicsonline.org)
  • Ultrafiltration is a compact alternative to traditional filtration technologies for water treatment. (bkg.cz)
  • The report also performs a methodical examination of the vendor landscape of the global Global ultrafiltration membrane filtration market 2017 industry research report market by analyzing the company profiles of prominent companies operating in the market. (qyresearchreports.com)
  • Slow Continuous Ultrafiltration (SCUF) is an artificial method which approximately mimics the ultrafiltration function of the kidneys. (wikipedia.org)
  • The purpose of this study was to evaluate the effects of continuous ultrafiltration on e-aminocaproic acid (EACA) utilizing functional coagulation analysis. (biomedsearch.com)
  • 20 kg), and received one of three modalities: slow continuous ultrafiltration, continuous venovenous hemofiltration (CVVH), or prolonged intermittent KRT. (asnjournals.org)
  • 20 kg, volume overload was the primary indication in 91% and slow continuous ultrafiltration was the most common modality. (asnjournals.org)
  • Conclusions We report the first pediatric experience using an ultrafiltration device to provide a range of therapies, including CVVH, prolonged intermittent KRT, and slow continuous ultrafiltration. (asnjournals.org)
  • As in nonbiological examples of ultrafiltration, pressure (in this case blood pressure) and concentration gradients lead to a separation through a semipermeable membrane (provided by the podocytes). (wikipedia.org)
  • Ultrafiltration is an excellent separation technology for desalination pretreatment, reverse osmosis pretreatment, and wastewater reclamation, as well as for producing potable water. (dupont.com)
  • With over 70 years of separation-technology leadership and products in more than 1,000 ultrafiltration installations worldwide, we offer a portfolio of products designed for outstanding membrane separation, extreme productivity and efficiency, and exceptional reliability. (dupont.com)
  • This six-hour test was a success, as it showed there was something in the water that was blinding the separation layer of the existing ultrafiltration system relatively quickly. (watertechonline.com)
  • The Single Use Cell (S.U.C.) is designed to optimize separation, purification, concentration and formulation processes in disposable chromatography and ultrafiltration systems. (optek.com)
  • A 2500 Da ultrafiltration membrane was applied to separation of humic substances from salts and heavy metals in landfill leachate in this study. (witpress.com)
  • Pall® AcroPrep™ Advance 96-well Filter Plates for Ultrafiltration povides rapid, efficient separation of biomolecules. (daigger.com)
  • Therefore, a low-pressure membrane technique like ultrafiltration (UF) is used in separation and purification because of its high efficiency and lower energy consumption, which lowers treatment costs. (springer.com)
  • 09/23/2017 10:45:00 09/23/2017 10:55:00 Europe/Berlin Joint pavilion: Start-ups for intelligent production & Product pitches - Cost-effective wastewater management: alternative to evaporators and ultrafiltration Depending on the size of the production site, companies in the metalworking industry generate volumes ranging from less than 50 m3/year to over 100,000 m3/year of extremely polluted wastewater. (emo-hannover.de)
  • The TARGA II hollow fiber system offers a cost-effective water solution for a variety of ultrafiltration applications, including drinking water, seawater pretreatment, industrial water treatment, and tertiary wastewater treatment. (kochmembrane.com)
  • In this article, I will talk about ultrafiltration (UF) uses for the treatment of dairy and beverage product wastewater streams. (wateronline.com)
  • Ultrafiltration (UF) is a pressure-driven purification process that separates particulate matter from soluble compounds using an ultrafine membrane media. (dupont.com)
  • Genesis Water Technologies provides specialized Ultrafiltration water purification system solutions for process water treatment applications. (environmental-expert.com)
  • SMART (Silent Membrane Alarm in Real Time) technology, the basis for the MASAR® software is an innovative and reliable software application system that detects and monitors the performance and fouling development of all Reverse Osmosis (RO) and Nanofiltration (NF) as well as Ultrafiltration (UF) and Microfiltration (MF) membrane systems of brackish and seawater water purification plants. (environmental-expert.com)
  • Ultrafiltration is an important purification technology used for the production of high-purity water. (waterfilters.net)
  • Ultrafiltration (UF) is an important purification technology used for the production of high-purity water. (waterfilters.net)
  • Ultrafiltration-based MAb purification, on the other hand, is easier, faster (2-3 hours versus 2 days), and yields higher recoveries. (sigmaaldrich.com)
  • Our data show that the combination of microfiltration and ultrafiltration is a rapid method for Mab purification. (sigmaaldrich.com)
  • Purification of anti c-myc antibody using ultrafiltration. (sigmaaldrich.com)
  • Ultrafiltration (UF) has received tremendous attention in concentration and purification of proteins in biotechnology, biomedicine and food production industries. (iwaponline.com)
  • In renal physiology, ultrafiltration occurs at the barrier between the blood and the filtrate in the glomerular capsule (Bowman's capsule) in the kidneys. (wikipedia.org)
  • Little is known about the efficacy and safety of ultrafiltration in patients with acute decompensated heart failure complicated by persistent congestion and worsened renal function. (nih.gov)
  • We randomly assigned a total of 188 patients with acute decompensated heart failure, worsened renal function, and persistent congestion to a strategy of stepped pharmacologic therapy (94 patients) or ultrafiltration (94 patients). (nih.gov)
  • In a randomized trial involving patients hospitalized for acute decompensated heart failure, worsened renal function, and persistent congestion, the use of a stepped pharmacologic-therapy algorithm was superior to a strategy of ultrafiltration for the preservation of renal function at 96 hours, with a similar amount of weight loss with the two approaches. (nih.gov)
  • Peritoneal Ultrafiltration in Cardio Renal Syndrome. (clinicaltrials.gov)
  • Peritoneal Ultrafiltration in Cardio Renal Syndrome to Prevent Heart Failure Exacerbation. (clinicaltrials.gov)
  • This study demonstrates the feasibility of using focused ultrasound (FUS) to modulate glomerular ultrafiltration by renal artery sonication and determine if protein-creatinine ratios are estimated through vascular parameters. (biomedsearch.com)
  • Glomerular ultrafiltration is regulated temporarily by renal artery sonication without microbubbles. (biomedsearch.com)
  • 2017 A new recycling system uses a combination of ultrafiltration , nanofiltration, reverse osmosis, and evaporator systems to restore waste water through purely physical means, without adding chemicals. (merriam-webster.com)
  • A novel organic solvent resistant nanofiltration (OSN) membrane was developed via plasma grafting of a high-density polyethylene glycol (PEG) on a cross-linked polyimide (cPI) ultrafiltration (UF) substrate in this work. (aiche.org)
  • CRYSTAL QUEST Bottleless Ultrafiltration and Reverse Osmosis and Ultrafiltration combo Water Cooler Systems are advanced, attractive and durable. (waterfilters.net)
  • Founded in 1969, we pioneered the commercial development of reverse osmosis and ultrafiltration technologies. (drugdiscoveryonline.com)
  • R.C. Blantz, K.S. Konnen, and B.J. Tucker, Angiotensin II effects upon the glomerular microcirculation and ultrafiltration coefficient of the rat, J. Clin. (springer.com)
  • For cross flow ultrafiltration, the osmotic pressure is further used in the calculation of the gradient diffusion coefficient from the generalised Stokes-Einstein equation. (bl.uk)
  • These declines were due primarily to a fall in the glomerular capillary ultrafiltration coefficient (Kf), to a mean value approximately 60% below that determined in the pre-infusion period. (nih.gov)
  • Igly for hemodialysis in the composition of artery vein and secured against accidental needlestick staff size: 15G, 16G, 17G, sterilized by gamma irradiation or ethylene oxide - 600 pcs - Part 5: synthetic membrane dialyzers of high flow ultrafiltration coefficient (KUF) 50-80ml/h/mmHg sterilized by gamma irradiation or steam, or by means of an electron beam: a) Surface: 1. (thefreedictionary.com)
  • a fluid bag that receives the removed excess fluid as the excess fluid drains from the ultrafiltration filter. (google.es)
  • Minicon ® concentrators are non-sterile, disposable, multiwell ultrafiltration devices designed for concentrating macromolecules in clinical specimens such as urine, cerebrospinal fluid (CSF) or other biological solutions. (sigmaaldrich.com)
  • The Aquadex FlexFlow System (CHF Solutions Inc., Eden Prairie, MN) is an ultrafiltration device designed for fluid removal in adults with diuretic resistant heart failure. (asnjournals.org)
  • Here, we describe two extracellular vesicle isolation protocols, ultrafiltration centrifugation and ultracentrifugation with density gradient centrifugation, to isolate extracellular vesicles from murine bronchoalveolar lavage fluid samples. (jove.com)
  • What ultrafiltration method is best suited for virus concentration? (sartorius.com)
  • Ultrafiltration devices are utilized for concentration and buffer exchange, desalting of proteins, DNA, viruses and other biological samples in laboratory scale from 100 µL to 5 L sample volume. (spectrumchemical.com)
  • Coagulation pretreatment of wash filtrate effluents with a commercial cationic coagulant or alum significantly improved ultrafiltration and reduced fouling up to a coagulant concentration of 10 mg/L. Addition of an excessive amount of a cationic coagulant had a very detrimental effect on membrane performance. (usda.gov)
  • Vivaspin® Concentrators are disposable ultrafiltration devices that may be utilized for the washing and concentration of submicron (20 nm - 0.5 um) microspheres. (polysciences.com)
  • Sartorius Stedim Biotech offers a wide range of ultrafiltration membrane discs for sample concentration in stirred cells. (fishersci.ca)
  • Recent advances in materials and membrane manufacturing techniques have led to ultrafiltration playing a pivotal role in a number of biopharmaceutical processes, including protein concentration and blood for actionation. (pharmtech.com)
  • As the glucose concentration of the dialysis solution is an important determinant of net ultrafiltration (netUF) by osmosis, normal values are related to the glucose concentration of the dialysate. (frontiersin.org)
  • Experiments were performed on 36 plasma-expanded Munich-Wistar rats to examine the effects of acute hypercalcemia on the determinants of glomerular ultrafiltration. (nih.gov)
  • The purpose of this study is to determine whether the treatment of peritoneal ultrafiltration can improve survival and quality of life of refractory congestive heart failure with special a. (bioportfolio.com)
  • The aim of our review is to present recent advances in the ultrafiltration therapy of congestive heart failure, with special attention to the new dedicated device for extracorporeal isolated ultrafiltration, as well as modifications of peritoneal dialysis in the form of peritoneal ultrafiltration with icodextrin solution and incremental peritoneal dialysis. (medscimonit.com)
  • Our review is supplemented with the case report of the use of peritoneal ultrafiltration with a single 12-hour nighttime icodextrin exchange as a life-saving procedure in a patient with congestive heart failure resistant to pharmacological treatment. (medscimonit.com)
  • This study was carried out to determine the potential of coagulation pretreatment with organic or inorganic coagulants to improve ultrafiltration performance during processing of wash deinking effluents containing flexographic inks. (usda.gov)
  • AlfaSIP-50D is also compatible with ultrafiltration systems and some chromatography columns. (selectscience.net)
  • Blood dialysis also utilizes ultrafiltration. (wikipedia.org)
  • Ultrafiltration (UF) failure is a common and important complication of peritoneal dialysis (PD), especially in long-term patients without residual urine production, because it often causes overhydration, which is an important cause of death in this population. (frontiersin.org)
  • Ultrafiltration (UF) failure during peritoneal dialysis (PD) is the commonly used term for a situation, where netUF, i.e., the difference between the drained and the instilled volume is less than expected in the PD population. (frontiersin.org)
  • Cardiac and hemodynamic effects of hemodialysis and ultrafiltration. (nih.gov)
  • The invention pertains more particularly to hemodialysis, in which the rate of ultrafiltration of water from the patient's blood across an artificial kidney membrane is extremely important. (freepatentsonline.com)
  • Vascular reactivity during combined ultrafiltration-hemodialysis: influence of dialysate-derived contaminants. (asnjournals.org)
  • It has been suggested that hemodynamic instability and impaired vascular reactivity during combined ultrafiltration-hemodialysis are related to bioincompatibility factors such as dialysate-derived contaminants or the dialyzer. (asnjournals.org)
  • These results indicate that vascular reactivity during combined ultrafiltration-hemodialysis is not improved by the use of sterile dialysate. (asnjournals.org)
  • The 0.2 micron Inline Ultrafiltration (UF) Membrane Filter is designed for use with Bottleless Water Coolers and Reverse Osmosis systems and ot. (filterwater.com)
  • This work analyses the measure of fit of experimental data of permeate flux decline with time for ultrafiltration experiments performed with polyethylene glycol aqueous solutions to two different ultrafiltration models. (springer.com)
  • 8. A method for preventing hypotension as in claim 1 wherein the osmotic pressure is determined across the permeable membrane that is part of an ultrafiltration filter the extracorporeal blood circuit. (google.com)
  • Peritoneal ultrafiltration is presented as a viable alternative to extracorporeal ultrafiltration because of medical and psychosocial benefits of home-based therapy, lower costs and more effective daily ultrafiltration. (medscimonit.com)
  • The research report studies the global Global ultrafiltration membrane sales market report 2017 market on the basis of several criteria, including type, application, and geography to provide a better understanding to the readers. (qyresearchreports.com)
  • The report also sheds light on the current trends related to the demand, supply, and sales of Global ultrafiltration membrane sales market report 2017, along with the recent developments in the field. (qyresearchreports.com)
  • The research report takes into consideration the drivers, restraints, trends, and opportunities of the global Global ultrafiltration membrane sales market report 2017 market in order to identify the future of the market. (qyresearchreports.com)
  • The report also provides an estimation of the overall market size in terms of both value and volume and offers qualitative and quantitative insights into the key segments and the geographical subdivisions of the Global ultrafiltration membrane sales market report 2017 market. (qyresearchreports.com)
  • According to the report, equipment and raw material are two primary components of the manufacturing process of Global ultrafiltration membrane sales market report 2017. (qyresearchreports.com)
  • Therefore, the report provides a 360-degree view of the global Global ultrafiltration membrane sales market report 2017 market. (qyresearchreports.com)
  • Ultrafiltration PES, CTA, & Hydrosart® Membrane Disc Filters from Sartorius. (sartorius.com)
  • Spectrum offers laboratory grade Ultrafiltration supplies and accessories from the industry's leading manufacturer, Sartorius. (spectrumchemical.com)
  • With the clinical laboratory in mind, we designed Centrifree ® devices to rapidly and efficiently separate free from protein-bound micro-solute in small volumes (0.15-1.0 mL) of serum, plasma, and other biological samples using ultrafiltration. (sigmaaldrich.com)
  • In this study, a polyacrylonitrile ultrafiltration membrane was modified to improve anti-protein-fouling capacity by grafting short-chain sulfonic type zwitterions. (hindawi.com)
  • The influence of the physicochemical conditions on the permeation rate in dead-end and cross flow ultrafiltration of protein dispersions is investigated. (bl.uk)
  • Concentrate and desalt biological samples and perform buffer exchange with disposable polyethersulfone (PES)-membrane ultrafiltration centrifugal devices. (fishersci.com)
  • Recent Examples on the Web Its Tetra Pak ultrafiltration system developed in Iceland also helps reduce lactose content by half. (merriam-webster.com)
  • Ultrafiltration system Dulcoclean UF reliably and safely uses membrane technology to remove turbidity, particles and microbiological contamination. (environmental-expert.com)
  • The AltaPac™ Ultrafiltration Membrane Package System is designed to be an economical ultrafiltration membrane treatment system that is both easy to use and simple to install. (environmental-expert.com)
  • The instant invention provides an automatic system for indicating the rate of ultrafiltration. (freepatentsonline.com)
  • A 2-MGD ultrafiltration system commissioned by Wigen Water Technologies in New Town, North Dakota in June 2011 is the first large scale municipal system in the United States to utilize Toray's HFS-2020 UF membrane modules. (prweb.com)
  • The objective of this feasibility study is to characterize the performance of CHF Solutions' ultrafiltration system, the Aquadex FlexFlow® System with the hematocrit (HCT) feature in conjunction with Daxor's blood volume analyzer (BVA-100). (clinicaltrials.gov)
  • This was followed by a pilot ultrafiltration (UF) system to run further tests in a small system. (watertechonline.com)
  • In the process at the vegetable cutting plant, the ultrafiltration system was getting plugged up and blinding the RO system. (watertechonline.com)
  • NHSRC recently developed a field-portable ultrafiltration (UF) method and automated UF system. (epa.gov)
  • We recommend installing a whole house sediment prefilter before the FreshPoint System, like a Rusco filter or a 5 micron 20" BB pleated or graded density filter, in order to eliminate larger sediment before the water reaches the Ultrafiltration membrane. (freshwatersystems.com)
  • This study investigated the feasibility of using an adsorption-fine-ultrafiltration system for removing organics from stabilized landfill leachate. (springer.com)
  • the fine-ultrafiltration system was equipped with a ceramic membrane. (springer.com)
  • The dizzer ultrafiltration modules are tightly packed together in the T-Rack cutting the total capital costs of the ultrafiltration system by at least five percent. (filtsep.com)
  • Packaged ultrafiltration membrane systems like WesTech's AltaPac ™ system are more flexible and accommodating of a site's specific needs than one might think upon hearing the term "packaged. (westech-inc.com)
  • WesTech worked closely with the company's engineering team to demonstrate that a modified version of our AltaPac™ Ultrafiltration Membrane Package System could meet all those requirements, and more. (westech-inc.com)
  • The original AltaPac packaged ultrafiltration (UF) plant already includes an integral cleaning system, which reduces the overall footprint. (westech-inc.com)
  • Due to low organics removal efficiency in fine-ultrafiltration alone (series 1) (46.5% of chemical oxygen demand, 22.1% of dissolved organic carbon), two doses of activated carbon were used for adsorption before fine-ultrafiltration: 0.2 g/L (series 2) and 1 g/L (series 3). (springer.com)
  • In the series with adsorption, permeate flux was about 10 times lower than during fine-ultrafiltration alone. (springer.com)
  • This indicates that, in fine-ultrafiltration preceded by adsorption on activated carbon, it is reasonable to use the lower dose of Norit SX2 because the efficiency of treatment is similar to that at the higher dose, but the reduction in permeate flux is somewhat less. (springer.com)
  • These results indicate that the possibility of using adsorption-fine-ultrafiltration in the practice of leachate treatment is limited because of blocking membrane pores with particles of activated carbon. (springer.com)
  • EMD Millipore Biomax Ultrafiltration Membrane Discs are compatible with Amicon™ Stirred Cells. (fishersci.com)
  • 3. The completely wearable ultrafiltration device of claim 2 , wherein the anticoagulant pump is a piezoelectric pump or a piston pump. (google.es)
  • 4. The completely wearable ultrafiltration device of claim 1 , wherein the completely wearable ultrafiltration device is adapted to operate on a rechargeable battery's power, the rechargeable battery being completely worn on the patient. (google.es)
  • 5. The completely wearable ultrafiltration device of claim 1 , further comprising a blood outlet tube, which carries the patient's blood from the blood filter back to the patient's body. (google.es)
  • 2021 Master Water products include water softeners, filters and ultrafiltration systems, which are sold under the names Alliance, Clarifier, MasterFusion, Satin Series, PuroPro, UltraPro and Clear Reflections, among others. (merriam-webster.com)
  • Kamps ultrafiltration systems combine process efficiency and a great installation flexibility. (environmental-expert.com)
  • CRYSTAL QUEST Premium Turbo Reverse Osmosis/Ultrafiltration Floor Water Cooler Systems are advanced, attractive and durable. (waterfilters.net)
  • Like all modular systems, ultrafiltration technology can be relatively easily expanded according to the changes of the production capacity. (bkg.cz)
  • Ultrafiltration is an alternative strategy to diuretic therapy for the treatment of patients with acute decompensated heart failure. (nih.gov)
  • A higher percentage of patients in the ultrafiltration group than in the pharmacologic-therapy group had a serious adverse event (72% vs. 57%, P=0.03). (nih.gov)
  • Sandeep A. Kamath, "The Role of Ultrafiltration in Patients with Decompensated Heart Failure," International Journal of Nephrology , vol. 2011, Article ID 190230, 6 pages, 2011. (hindawi.com)
  • Randomized, controlled, unblinded, adaptive design clinical trial to evaluate the safety and efficacy of PolyCore (Polydextrin, L-Carnitine, D-xylitol) peritoneal ultrafiltration (PUF) in patients with heart failure and reduced ejection fraction (HFrEF). (clinicaltrials.gov)
  • patients who hurled with inappropriate shop ultrafiltration or induction( within 12 samples after cell) were sometimes been. (deadbatteries.com)
  • The CRYSTAL QUEST Hybrid Ultrafiltration Floor Water Cooler features an optional add-on filter cartridge for fluoride, nitrates, arsenic and other water contaminants. (waterfilters.net)
  • article{1d2e4400-9df1-45e1-9a7b-120fced61582, abstract = {The influences of different types of cleaning agents on a polysulphone ultrafiltration (UF) membrane which had been used to treat oily waste water were investigated. (lu.se)
  • This product may be an accessory for Ultrafiltration Membrane Disc Filters, Pall Life Sciences and may differ from the image shown. (egeneralmedical.com)
  • Ultrafiltration resulted in the efficient fractionation of kraft lignin according to its molecular weight, with an accumulation of sulfur-containing compounds in the low-molecular weight fractions. (diva-portal.org)
  • This technology uses an ultrafiltration membrane barrier to exclude particles 0.02 to 0.05 microns, including bacteria, viruses, and colloids, meeting increasingly stringent water-quality standards around the world, and providing a stable, reliable, and consistent water quality. (dupont.com)
  • Ultrafiltration is a pressure driven process for the selective removal of suspended material (particles, big size macromolecules, colloidal material and microorganisms), with a operating pressure range between 0,5 and 6 Barg. (environmental-expert.com)
  • Ultrafiltration is a pressure-driven membrane filtering process used to separate and/or purify dissolved or suspended particles from water and other liquids. (pharmtech.com)
  • Although the use of Norit SX2 improved permeate quality in comparison with fine-ultrafiltration alone (220 mg/L in series 2 and 209 mg/L in series 3 vs. 842 mg/L in series 1), its particles blocked the membrane and lowered the permeate flux even at the lower dose. (springer.com)
  • the ultrafiltration device sized to be completely worn on a portion of the patient's body. (google.es)
  • 7. The ultrafiltration device of claim 6 , further comprising a blood outlet tube to transport filtered blood from a blood ultrafiltration filter output back to the patient's body. (google.es)
  • PolyCore peritoneal ultrafiltration (PUF) (over the top of patient's prescribed heart failure medications), for 6 months. (clinicaltrials.gov)
  • Joe Taschler, Milwaukee Journal Sentinel , 27 July 2021 On heart failure, the clinical guideline has ultrafiltration at the end of the continuum of care. (merriam-webster.com)
  • Todd Nelson, Star Tribune , 2 May 2021 Another technique, combining water-soluble metal-binding polymers with ultrafiltration , also has been shown to be effective in selectively recovering various metals. (merriam-webster.com)
  • Ultrafiltration can be used for the removal of particulates and macromolecules from raw water to produce potable water. (wikipedia.org)
  • An ultrafiltration device adapted to be worn on a portion of the body of a patient includes a blood inlet tube leading from a first blood vessel, a blood pump, an anticoagulant reservoir for infusing anticoagulants into the blood, a blood filter including a substrate through which the blood is circulated. (google.es)
  • 8. The ultrafiltration device of claim 6 , further comprising means for infusing anticoagulant into the blood inlet tube. (google.es)
  • 9. The ultrafiltration device of claim 6 , further adapted to comprise a battery for powering the ultrafiltration device. (google.es)
  • 10. The ultrafiltration device of claim 6 , wherein the ultrafiltration device weighs less than 2 pounds. (google.es)
  • UF: Supernatant concentrated by ultrafiltration on Centricon ® -Plus 70 device. (sigmaaldrich.com)
  • Design, setting, participants, & measurements In this multicenter, retrospective case series of children who received KRT with an ultrafiltration device ( n =119 admissions, 884 circuits), we report demographics, circuit characteristics, complications, and short- and long-term outcomes. (asnjournals.org)
  • By placing a negative charge on the surface of an ultrafiltration membrane, the negatively charged proteins were rejected by electrostatic repulsion and not simply size-based sieving. (mdpi.com)
  • To recap, ultrafiltration can be an ideal sustainable treatment solution for the removal of fine suspended solids, proteins, complex sugars, and microbial pathogens in both dairy and beverage applications. (wateronline.com)