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)
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.
Chromatography on non-ionic gels without regard to the mechanism of solute discrimination.
The sum of the weight of all the atoms in a molecule.
Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.
Separation technique in which the stationary phase consists of ion exchange resins. The resins contain loosely held small ions that easily exchange places with other small ions of like charge present in solutions washed over the resins.
Laboratory tests used to evaluate how well the kidneys are working through examination of blood and urine.
Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.
A starch found in the tubers and roots of many plants. Since it is hydrolyzable to FRUCTOSE, it is classified as a fructosan. It has been used in physiologic investigation for determination of the rate of glomerular function.
A specialized barrier in the kidney, consisting of the fenestrated CAPILLARY ENDOTHELIUM; GLOMERULAR BASEMENT MEMBRANE; and glomerular epithelium (PODOCYTES). The barrier prevents the filtration of PLASMA PROTEINS.
Pathological processes of the KIDNEY or its component tissues.
A cluster of convoluted capillaries beginning at each nephric tubule in the kidney and held together by connective tissue.
The circulation of the BLOOD through the vessels of the KIDNEY.
A surgical procedure used in treatment of glaucoma in which an opening is created through which aqueous fluid may pass from the anterior chamber into a sac created beneath the conjunctiva, thus lowering the pressure within the eye. (Hoffman, Pocket Glossary of Ophthalmologic Terminology, 1989)
The rate dynamics in chemical or physical systems.
Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.
An extracellular cystatin subtype that is abundantly expressed in bodily fluids. It may play a role in the inhibition of interstitial CYSTEINE PROTEASES.
A membrane or barrier with micrometer sized pores used for separation purification processes.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Conditions in which the KIDNEYS perform below the normal level for more than three months. Chronic kidney insufficiency is classified by five stages according to the decline in GLOMERULAR FILTRATION RATE and the degree of kidney damage (as measured by the level of PROTEINURIA). The most severe form is the end-stage renal disease (CHRONIC KIDNEY FAILURE). (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002)
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).
Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts.
A chromatographic technique that utilizes the ability of biological molecules to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.
The presence of albumin in the urine, an indicator of KIDNEY DISEASES.
A contrast medium in diagnostic radiology with properties similar to those of diatrizoic acid. It is used primarily as its sodium and meglumine (IOTHALAMATE MEGLUMINE) salts.
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
The presence of proteins in the urine, an indicator of KIDNEY DISEASES.
Electrophoresis in which a pH gradient is established in a gel medium and proteins migrate until they reach the site (or focus) at which the pH is equal to their isoelectric point.
A type of ion exchange chromatography using diethylaminoethyl cellulose (DEAE-CELLULOSE) as a positively charged resin. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Highly differentiated epithelial cells of the visceral layer of BOWMAN CAPSULE of the KIDNEY. They are composed of a cell body with major CELL SURFACE EXTENSIONS and secondary fingerlike extensions called pedicels. They enwrap the KIDNEY GLOMERULUS capillaries with their cell surface extensions forming a filtration structure. The pedicels of neighboring podocytes interdigitate with each other leaving between them filtration slits that are bridged by an extracellular structure impermeable to large macromolecules called the slit diaphragm, and provide the last barrier to protein loss in the KIDNEY.
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.
Long convoluted tubules in the nephrons. They collect filtrate from blood passing through the KIDNEY GLOMERULUS and process this filtrate into URINE. Each renal tubule consists of a BOWMAN CAPSULE; PROXIMAL KIDNEY TUBULE; LOOP OF HENLE; DISTAL KIDNEY TUBULE; and KIDNEY COLLECTING DUCT leading to the central cavity of the kidney (KIDNEY PELVIS) that connects to the URETER.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Sodium excretion by URINATION.
The pH in solutions of proteins and related compounds at which the dipolar ions are at a maximum.
The functional units of the kidney, consisting of the glomerulus and the attached tubule.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
An increase in the excretion of URINE. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Compounds and molecular complexes that consist of very large numbers of atoms and are generally over 500 kDa in size. In biological systems macromolecular substances usually can be visualized using ELECTRON MICROSCOPY and are distinguished from ORGANELLES by the lack of a membrane structure.
Conditions in which the KIDNEYS perform below the normal level in the ability to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal insufficiency can be classified by the degree of kidney damage (as measured by the level of PROTEINURIA) and reduction in GLOMERULAR FILTRATION RATE.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The amount of PLASMA that perfuses the KIDNEYS per unit time, approximately 10% greater than effective renal plasma flow (RENAL PLASMA FLOW, EFFECTIVE). It should be differentiated from the RENAL BLOOD FLOW; (RBF), which refers to the total volume of BLOOD flowing through the renal vasculature, while the renal plasma flow refers to the rate of plasma flow (RPF).
Centrifugation with a centrifuge that develops centrifugal fields of more than 100,000 times gravity. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The largest class of organic compounds, including STARCH; GLYCOGEN; CELLULOSE; POLYSACCHARIDES; and simple MONOSACCHARIDES. Carbohydrates are composed of carbon, hydrogen, and oxygen in a ratio of Cn(H2O)n.
Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.
The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement.
Technique involving the diffusion of antigen or antibody through a semisolid medium, usually agar or agarose gel, with the result being a precipitin reaction.
A homologous group of endogenous CYSTEINE PROTEINASE INHIBITORS. The cystatins inhibit most CYSTEINE ENDOPEPTIDASES such as PAPAIN, and other peptidases which have a sulfhydryl group at the active site.
KIDNEY injuries associated with diabetes mellitus and affecting KIDNEY GLOMERULUS; ARTERIOLES; KIDNEY TUBULES; and the interstitium. Clinical signs include persistent PROTEINURIA, from microalbuminuria progressing to ALBUMINURIA of greater than 300 mg/24 h, leading to reduced GLOMERULAR FILTRATION RATE and END-STAGE RENAL DISEASE.
The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.
Elements of limited time intervals, contributing to particular results or situations.
A group of glycine amides of aminobenzoic acids.
Electrophoresis in which discontinuities in both the voltage and pH gradients are introduced by using buffers of different composition and pH in the different parts of the gel column. The term 'disc' was originally used as an abbreviation for 'discontinuous' referring to the buffers employed, and does not have anything to do with the shape of the separated zones.
A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.
The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is taken up and excreted by the kidneys.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.
Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.
An effective non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiographic procedures. Its low systemic toxicity is the combined result of low chemotoxicity and low osmolality.
The formation of a solid in a solution as a result of a chemical reaction or the aggregation of soluble substances into complexes large enough to fall out of solution.
A series of steps taken in order to conduct research.
Separation of particles according to density by employing a gradient of varying densities. At equilibrium each particle settles in the gradient at a point equal to its density. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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.
Presence of warmth or heat or a temperature notably higher than an accustomed norm.
Sulfuric acid diammonium salt. It is used in CHEMICAL FRACTIONATION of proteins.
Any of several processes in which undesirable impurities in water are removed or neutralized; for example, chlorination, filtration, primary treatment, ion exchange, and distillation. It includes treatment of WASTE WATER to provide potable and hygienic water in a controlled or closed environment as well as provision of public drinking water supplies.
Excision of kidney.
A method of gel filtration chromatography using agarose, the non-ionic component of agar, for the separation of compounds with molecular weights up to several million.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
Measurable and quantifiable biological parameters (e.g., specific enzyme concentration, specific hormone concentration, specific gene phenotype distribution in a population, presence of biological substances) which serve as indices for health- and physiology-related assessments, such as disease risk, psychiatric disorders, environmental exposure and its effects, disease diagnosis, metabolic processes, substance abuse, pregnancy, cell line development, epidemiologic studies, etc.
The pressure due to the weight of fluid.
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)
Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques.
Unstable isotopes of chromium that decay or disintegrate emitting radiation. Cr atoms with atomic weights of 46-49, 51, 55, and 56 are radioactive chromium isotopes.
A serine endopeptidase that is formed from TRYPSINOGEN in the pancreas. It is converted into its active form by ENTEROPEPTIDASE in the small intestine. It catalyzes hydrolysis of the carboxyl group of either arginine or lysine. EC
Proteins that are present in blood serum, including SERUM ALBUMIN; BLOOD COAGULATION FACTORS; and many other types of proteins.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.
Abrupt reduction in kidney function. Acute kidney injury encompasses the entire spectrum of the syndrome including acute kidney failure; ACUTE KIDNEY TUBULAR NECROSIS; and other less severe conditions.
A group of compounds with the general formula M10(PO4)6(OH)2, where M is barium, strontium, or calcium. The compounds are the principal mineral in phosphorite deposits, biological tissue, human bones, and teeth. They are also used as an anticaking agent and polymer catalysts. (Grant & Hackh's Chemical Dictionary, 5th ed)
A ubiquitous sodium salt that is commonly used to season food.
Positively charged atoms, radicals or groups of atoms with a valence of plus 2, which travel to the cathode or negative pole during electrolysis.
The renal tubule portion that extends from the BOWMAN CAPSULE in the KIDNEY CORTEX into the KIDNEY MEDULLA. The proximal tubule consists of a convoluted proximal segment in the cortex, and a distal straight segment descending into the medulla where it forms the U-shaped LOOP OF HENLE.
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)
The extent to which an enzyme retains its structural conformation or its activity when subjected to storage, isolation, and purification or various other physical or chemical manipulations, including proteolytic enzymes and heat.
Volume of biological fluid completely cleared of drug metabolites as measured in unit time. Elimination occurs as a result of metabolic processes in the kidney, liver, saliva, sweat, intestine, heart, brain, or other site.
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.
The transference of a kidney from one human or animal to another.
Conjugated protein-carbohydrate compounds including mucins, mucoid, and amyloid glycoproteins.
A technique that combines protein electrophoresis and double immunodiffusion. In this procedure proteins are first separated by gel electrophoresis (usually agarose), then made visible by immunodiffusion of specific antibodies. A distinct elliptical precipitin arc results for each protein detectable by the antisera.
Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.
The layer of EXTRACELLULAR MATRIX that lies between the ENDOTHELIUM of the glomerular capillaries and the PODOCYTES of the inner or visceral layer of the BOWMAN CAPSULE. It is the product of these two cell types. It acts as a physical barrier and an ion-selective filter.
Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (Dictionary of Health Services Management, 2d ed)
A sucrose polymer of high molecular weight.
The outer zone of the KIDNEY, beneath the capsule, consisting of KIDNEY GLOMERULUS; KIDNEY TUBULES, DISTAL; and KIDNEY TUBULES, PROXIMAL.
Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.
The glycine amide of 4-aminobenzoic acid. Its sodium salt is used as a diagnostic aid to measure effective renal plasma flow (ERPF) and excretory capacity.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
A highly specific (Leu-Leu) endopeptidase that generates ANGIOTENSIN I from its precursor ANGIOTENSINOGEN, leading to a cascade of reactions which elevate BLOOD PRESSURE and increase sodium retention by the kidney in the RENIN-ANGIOTENSIN SYSTEM. The enzyme was formerly listed as EC
The concentration of osmotically active particles in solution expressed in terms of osmoles of solute per liter of solution. Osmolality is expressed in terms of osmoles of solute per kilogram of solvent.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
The chemical and physical integrity of a pharmaceutical product.
Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)
Hydrolases that specifically cleave the peptide bonds found in PROTEINS and PEPTIDES. Examples of sub-subclasses for this group include EXOPEPTIDASES and ENDOPEPTIDASES.
Proteins prepared by recombinant DNA technology.
The amount of PLASMA flowing to the parts of the KIDNEY that function in the production of urine. It is the amount of plasma perfusing the KIDNEY TUBULES per unit time, generally measured by P-AMINOHIPPURATE clearance. It should be differentiated from RENAL PLASMA FLOW which is approximately 10% greater than the effective renal plasma flow.
The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis.
Carbohydrates consisting of between two (DISACCHARIDES) and ten MONOSACCHARIDES connected by either an alpha- or beta-glycosidic link. They are found throughout nature in both the free and bound form.
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
Compounds which inhibit or antagonize biosynthesis or actions of proteases (ENDOPEPTIDASES).
The process of cleaving a chemical compound by the addition of a molecule of water.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
Procedure whereby plasma is separated and extracted from anticoagulated whole blood and the red cells retransfused to the donor. Plasmapheresis is also employed for therapeutic use.
Liquid by-product of excretion produced in the kidneys, temporarily stored in the bladder until discharge through the URETHRA.
A group of glucose polymers made by certain bacteria. Dextrans are used therapeutically as plasma volume expanders and anticoagulants. They are also commonly used in biological experimentation and in industry for a wide variety of purposes.
The parts of a macromolecule that directly participate in its specific combination with another molecule.
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
Separation of a mixture in successive stages, each stage removing from the mixture some proportion of one of the substances, for example by differential solubility in water-solvent mixtures. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for EDEMA and chronic RENAL INSUFFICIENCY.
A metallic element that has the atomic symbol Mg, atomic number 12, and atomic weight 24.31. It is important for the activity of many enzymes, especially those involved in OXIDATIVE PHOSPHORYLATION.
The force that opposes the flow of BLOOD through a vascular bed. It is equal to the difference in BLOOD PRESSURE across the vascular bed divided by the CARDIAC OUTPUT.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation.
Any surgical procedure for treatment of glaucoma by means of puncture or reshaping of the trabecular meshwork. It includes goniotomy, trabeculectomy, and laser perforation.
The mucous membrane that covers the posterior surface of the eyelids and the anterior pericorneal surface of the eyeball.
A subclass of PEPTIDE HYDROLASES that catalyze the internal cleavage of PEPTIDES or PROTEINS.
The minute vessels that connect the arterioles and venules.
Narrowing or occlusion of the RENAL ARTERY or arteries. It is due usually to ATHEROSCLEROSIS; FIBROMUSCULAR DYSPLASIA; THROMBOSIS; EMBOLISM, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (HYPERTENSION, RENOVASCULAR).
An electrochemical process in which macromolecules or colloidal particles with a net electric charge migrate in a solution under the influence of an electric current.
Intracellular fluid from the cytoplasm after removal of ORGANELLES and other insoluble cytoplasmic components.
Volume of PLASMA in the circulation. It is usually measured by INDICATOR DILUTION TECHNIQUES.
Transport proteins that carry specific substances in the blood or across cell membranes.
Proteins which contain carbohydrate groups attached covalently to the polypeptide chain. The protein moiety is the predominant group with the carbohydrate making up only a small percentage of the total weight.
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.
The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells.
A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules.
Purifying or cleansing agents, usually salts of long-chain aliphatic bases or acids, that exert cleansing (oil-dissolving) and antimicrobial effects through a surface action that depends on possessing both hydrophilic and hydrophobic properties.
Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Persistent high BLOOD PRESSURE due to KIDNEY DISEASES, such as those involving the renal parenchyma, the renal vasculature, or tumors that secrete RENIN.
Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.
Preparations made from animal tissues or organs (ANIMAL STRUCTURES). They usually contain many components, any one of which may be pharmacologically or physiologically active. Tissue extracts may contain specific, but uncharacterized factors or proteins with specific actions.
The art or process of comparing photometrically the relative intensities of the light in different parts of the spectrum.
Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (ELECTROLYSIS). (Grant & Hackh's Chemical Dictionary, 5th ed)
A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.
The process by which two molecules of the same chemical composition form a condensation product or polymer.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
An anionic surfactant, usually a mixture of sodium alkyl sulfates, mainly the lauryl; lowers surface tension of aqueous solutions; used as fat emulsifier, wetting agent, detergent in cosmetics, pharmaceuticals and toothpastes; also as research tool in protein biochemistry.
Structurally related forms of an enzyme. Each isoenzyme has the same mechanism and classification, but differs in its chemical, physical, or immunological characteristics.
A method of measuring the effects of a biologically active substance using an intermediate in vivo or in vitro tissue or cell model under controlled conditions. It includes virulence studies in animal fetuses in utero, mouse convulsion bioassay of insulin, quantitation of tumor-initiator systems in mouse skin, calculation of potentiating effects of a hormonal factor in an isolated strip of contracting stomach muscle, etc.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A class of drugs whose main indications are the treatment of hypertension and heart failure. They exert their hemodynamic effect mainly by inhibiting the renin-angiotensin system. They also modulate sympathetic nervous system activity and increase prostaglandin synthesis. They cause mainly vasodilation and mild natriuresis without affecting heart rate and contractility.
Proteins found in any species of bacterium.
Extracorporeal ULTRAFILTRATION technique without HEMODIALYSIS for treatment of fluid overload and electrolyte disturbances affecting renal, cardiac, or pulmonary function.
A change from planar to elliptic polarization when an initially plane-polarized light wave traverses an optically active medium. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
A condition characterized by severe PROTEINURIA, greater than 3.5 g/day in an average adult. The substantial loss of protein in the urine results in complications such as HYPOPROTEINEMIA; generalized EDEMA; HYPERTENSION; and HYPERLIPIDEMIAS. Diseases associated with nephrotic syndrome generally cause chronic kidney dysfunction.
Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
A clinicopathological syndrome or diagnostic term for a type of glomerular injury that has multiple causes, primary or secondary. Clinical features include PROTEINURIA, reduced GLOMERULAR FILTRATION RATE, and EDEMA. Kidney biopsy initially indicates focal segmental glomerular consolidation (hyalinosis) or scarring which can progress to globally sclerotic glomeruli leading to eventual KIDNEY FAILURE.
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.
A proteolytic enzyme obtained from Streptomyces griseus.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.
Liquid components of living organisms.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
The ability of the kidney to excrete in the urine high concentrations of solutes from the blood plasma.
The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
A potent natriuretic and vasodilatory peptide or mixture of different-sized low molecular weight PEPTIDES derived from a common precursor and secreted mainly by the HEART ATRIUM. All these peptides share a sequence of about 20 AMINO ACIDS.
Serum that contains antibodies. It is obtained from an animal that has been immunized either by ANTIGEN injection or infection with microorganisms containing the antigen.
The flow of BLOOD through or around an organ or region of the body.
Chemical analysis based on the phenomenon whereby light, passing through a medium with dispersed particles of a different refractive index from that of the medium, is attenuated in intensity by scattering. In turbidimetry, the intensity of light transmitted through the medium, the unscattered light, is measured. In nephelometry, the intensity of the scattered light is measured, usually, but not necessarily, at right angles to the incident light beam.
Inorganic salts of phosphoric acid.
Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.
Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.
An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.
Treatment process involving the injection of fluid into an organ or tissue.
Electropositive chemical elements characterized by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (Grant & Hackh's Chemical Dictionary, 5th ed)
The vascular resistance to the flow of BLOOD through the CAPILLARIES portions of the peripheral vascular bed.
An oxidation product, via XANTHINE OXIDASE, of oxypurines such as XANTHINE and HYPOXANTHINE. It is the final oxidation product of purine catabolism in humans and primates, whereas in most other mammals URATE OXIDASE further oxidizes it to ALLANTOIN.
An element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells. Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.
The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated markings, or with automated blood cell counters. It is an indicator of erythrocyte status in disease. For example, ANEMIA shows a low value; POLYCYTHEMIA, a high value.
A serine endopeptidase secreted by the pancreas as its zymogen, CHYMOTRYPSINOGEN and carried in the pancreatic juice to the duodenum where it is activated by TRYPSIN. It selectively cleaves aromatic amino acids on the carboxyl side.
The worsening of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Interstitial space between cells, occupied by INTERSTITIAL FLUID as well as amorphous and fibrous substances. For organisms with a CELL WALL, the extracellular space includes everything outside of the CELL MEMBRANE including the PERIPLASM and the cell wall.
Chemical agents that react with SH groups. This is a chemically diverse group that is used for a variety of purposes. Among these are enzyme inhibition, enzyme reactivation or protection, and labelling.
The interstitial fluid that is in the LYMPHATIC SYSTEM.

Improved antibody detection by the use of range expansion and longer filter wavelength in a low ionic strength-protamine sulphate Auto-Analyzer system. (1/1800)

Range expansion, achieved by insertion of a variable resistance between the colorimeter and the recorder together with the use of 550 nm colorimeter filters, has resulted in markedly improved sensitivity for antibody detection, and improved sample identification, in a low ionic strength-protamine sulphate (LISPS) system. Range expansion also permits a lower concentration of red cells to be used, thus economizing on fully typed cells. Glycerol stored frozen cells were found to be only slightly less sensitive than fresh cells in this system.  (+info)

The effect of the antiscatter grid on full-field digital mammography phantom images. (2/1800)

Computer Analysis of Mammography Phantom Images (CAMPI) is a method for making quantitative measurements of image quality. This article reports on a recent application of this method to a prototype full-field digital mammography (FFDM) machine. Images of a modified ACR phantom were acquired on the General Electric Diagnostic Molybdenum Rhodium (GE-DMR) FFDM machine at a number of x-ray techniques, both with and without the scatter reduction grid. The techniques were chosen so that one had sets of grid and non-grid images with matched doses (200 mrads) and matched gray-scale values (1500). A third set was acquired at constant 26 kVp and varying mAs for both grid conditions. Analyses of the images yielded signal-to-noise-ratio (SNR), contrast and noise corresponding to each target object, and a non-uniformity measure. The results showed that under conditions of equal gray-scale value the grid images were markedly superior, albeit at higher doses than the non-grid images. Under constant dose conditions, the non-grid images were slightly superior in SNR (7%) but markedly less uniform (60%). Overall, the grid images had substantially greater contrast and superior image uniformity. These conclusions applied to the whole kVp range studied for the Mo-Mo target filter combination and 4 cm of breast equivalent material of average composition. These results suggest that use of the non-grid technique in digital mammography with the GE-DMR-FFDM unit, is presently not warranted. With improved uniformity correction procedure, this conclusion would change and one should be able to realize a 14% reduction in patient dose at the same SNR by using a non-grid technique.  (+info)

Computed radiography dual energy subtraction: performance evaluation when detecting low-contrast lung nodules in an anthropomorphic phantom. (3/1800)

A dedicated chest computed radiography (CR) system has an option of energy subtraction (ES) acquisition. Two imaging plates, rather than one, are separated by a copper filter to give a high-energy and low-energy image. This study compares the diagnostic accuracy of conventional computed radiography to that of ES obtained with two radiographic techniques. One soft tissue only image was obtained at the conventional CR technique (s = 254) and the second was obtained at twice the radiation exposure (s = 131) to reduce noise. An anthropomorphic phantom with superimposed low-contrast lung nodules was imaged 53 times for each radiographic technique. Fifteen images had no nodules; 38 images had a total of 90 nodules placed on the phantom. Three chest radiologists read the three sets of images in a receiver operating characteristic (ROC) study. Significant differences in Az were only found between (1) the higher exposure energy subtracted images and the conventional dose energy subtracted images (P = .095, 90% confidence), and (2) the conventional CR and the energy subtracted image obtained at the same technique (P = .024, 98% confidence). As a result of this study, energy subtracted images cannot be substituted for conventional CR images when detecting low-contrast nodules, even when twice the exposure is used to obtain them.  (+info)

Filter-based coded-excitation system for high-speed ultrasonic imaging. (4/1800)

We have recently presented a new algorithm for high-speed parallel processing of ultrasound pulse-echo data for real-time three-dimensional (3-D) imaging. The approach utilizes a discretized linear model of the echo data received from the region of interest (ROI) using a conventional beam former. The transmitter array elements are fed with binary codes designed to produce distinct impulse responses from different directions in ROI. Image reconstruction in ROI is achieved with a regularized pseudoinverse operator derived from the linear receive signal model. The reconstruction operator can be implemented using a transversal filter bank with every filter in the bank designed to extract echoes from a specific direction in the ROI. The number of filters in the bank determines the number of image lines acquired simultaneously. In this paper, we present images of a cyst phantom reconstructed based on our formulation. A number of issues of practical significance in image reconstruction are addressed. Specifically, an augmented model is introduced to account for imperfect blocking of echoes from outside the ROI. We have also introduced a column-weighting algorithm for minimizing the number of filter coefficients. In addition, a detailed illustration of a full image reconstruction using subimage acquisition and compounding is given. Experimental results have shown that the new approach is valid for phased-array pulse-echo imaging of speckle-generating phantoms typically used in characterizing medical imaging systems. Such coded-excitation-based image reconstruction from speckle-generating phantoms, to the best of our knowledge, have not been reported previously.  (+info)

Comparison of five methods of malaria detection in the outpatient setting. (5/1800)

In eastern Africa where 90% of the malaria is due to Plasmodium falciparum, the accuracy of malaria diagnosis at the outpatient level is becoming increasingly important due to problems of drug resistance and use of alternative, costly antimalarial drugs. The quantitative buffy coat (QBC) technique, acridine orange staining with an interference filter system, and the ParaSight-F test have been introduced as alternative methods to conventional microscopy for the diagnosis of malaria. Two hundred thirteen outpatients were tested using these alternative methods and conventional microscopy by five experienced technologists; two were randomly allocated to read the results of each test. Paired results showed the highest level of agreement with the ParaSight-F test (99%), followed by Field stain (92%). The results of the QBC technique showed the least agreement (73%). Using conventional microscopy as the reference standard, the ParaSight-F test had a sensitivity range of 90-92% and a specificity of 99%, staining with acridine orange had a sensitivity range of 77-96% and a specificity range of 81-98% and the QBC technique had a sensitivity range of 88-98% and a specificity range of 58-90%. All microscopic tests showed lower sensitivities (as low as 20% using staining with acridine orange) in detecting low parasitemias (< or = 320/microl) than the ParaSight-F test (70%). Due to the high cost of the ParaSight-F test, Field-stained blood films remain the most appropriate method for diagnosis of P. falciparum in eastern Africa. The ParaSight-F test may be used in situations where no trained microscopists are available, or where malaria is strongly suspected and the results of microscopy are negative.  (+info)

Nitrate removal in closed-system aquaculture by columnar denitrification. (6/1800)

The columnar denitrification method of nitrate-nitrogen removal from high-density, closed system, salmonid aquaculture was investigated and found to be feasible. However, adequate chemical monitoring was found to be necessary for the optimization and quality control of this method. When methanol-carbon was not balanced with inlet nitrate-nitrogen, the column effluent became unsatisfactory for closed-system fish culture due to the presence of excess amounts of nitrite, ammonia, sulfide, and dissolved organic carbon. Sulfide production was also influenced by column maturity and residence time. Methane-carbon was found to be unsatisfactory as an exogenous carbon source. Endogenous carbon could not support high removal efficiencies. Freshwater columns adpated readily to an artificial seawater with a salinity of 18% without observable inhibition. Scanning electron microscopy revealed that the bacterial flora was mainly rod forms with the Peritricha (protozoa) dominating as the primary consumers. Denitrifying bacteria isolated from freshwater columns were tentatively identified as species of Pseudomonas and Alcaligenes. A pilot plant column was found to behave in a manner similar to the laboratory columns except that nitrite production was never observed.  (+info)

Filter ventilation and nicotine content of tobacco in cigarettes from Canada, the United Kingdom, and the United States. (7/1800)

OBJECTIVES: The purpose was to determine filter ventilation and the nicotine content of tobacco and their contribution to machine-smoked yields of cigarettes from the United States, Canada, and the United Kingdom. METHODS: Ninety-two brands of cigarettes (32 American, 23 Canadian, and 37 British brands) were purchased at retail outlets in State College, Pennsylvania, United States, Toronto, Canada, and London, United Kingdom. A FIDUS FDT filter ventilation tester measured the percentage air-dilution from filter vents. High-pressure, liquid chromatography was used to measure the nicotine content of tobacco. Regression techniques were used to examine the contributions of tobacco nicotine content and filter ventilation to machine-smoked yields of tar, nicotine, and carbon monoxide (CO). RESULTS: Ninety-four per cent of the American brands, 91% of the Canadian brands, and 79% of British brands were ventilated. The total nicotine content of tobacco and percent nicotine (by weight of tobacco) averaged 10.2 mg (standard error of the mean (SEM) 0.25, range: 7.2 to 13.4) and 1.5% (SEM 0.03, range 1.2 to 2) in the United States, 13.5 mg (SEM 0.49, range: 8.0 to 18.3) and 1.8% (SEM 0.06, range: 1.0 to 2.4) in Canada, 12.5 mg (SEM 0.33, range: 9 to 17.5) and 1.7% (SEM 0.04, range: 1.3 to 2.4) in the United Kingdom. Multiple regression analyses showed that ventilation was by far the largest factor influencing machine-smoked yields of tar, nicotine, and CO. CONCLUSION: Filter ventilation appears to be the predominant method for reducing machine-smoked yields of tar, nicotine, and CO in three countries. However, some brands contain about twice as much nicotine (total content or percent nicotine) as do others, indicating that tobacco types or blends and tobacco castings can be used to manipulate nicotine content and nicotine delivery of cigarettes.  (+info)

Effects of Aspergillus fumigatus culture filtrate on antifungal activity of human phagocytes in vitro. (8/1800)

BACKGROUND: Aspergillus fumigatus can colonise the airways and the lungs with localised underlying conditions and occasionally invade the surrounding lung tissues even in subjects without systemic predisposing factors, presumably by escaping the local host defences. The aim of this study was to investigate the effects of A fumigatus culture filtrate (ACF) on the activities of human phagocytes--inhibition of germination of A fumigatus spores by alveolar macrophages (AMs) and hyphal damage by polymorphonuclear leucocytes (PMNs)--which are the critical host defences against A fumigatus. METHODS: Spores were incubated with AMs at a ratio of 1:1 in a medium containing different concentrations of ACF for 10 hours at 37 degrees C. Spore germination was visualised with light microscopy and the inhibition rate was calculated. The percentage of hyphal damage caused by PMNs pretreated with various concentrations of ACF was measured by a colorimetric tetrazolium metabolic assay. RESULTS: The inhibition rate of spore germination by AMs cultured with medium alone (control) was 90 (0.8)% whereas that by AMs cultured with the medium containing 10% ACF was significantly (p < 0.05) reduced to 41.7 (4.6)%. ACF suppressed the inhibition of spore germination in a dose dependent manner without altering the phagocytosing activity against the spores. The percentage of hyphal damage caused by PMNs pretreated with medium-199 (control) was 78.1 (2.3)% compared with 65.3 (2.8)% when PMNs were pretreated with 50% ACF (p < 0.05). CONCLUSIONS: A fumigatus releases biologically active substance(s) which suppress the inhibition of spore germination by AMs and also suppress PMN mediated hyphal damage, and thus may contribute to the pathogenicity of this fungus.  (+info)

Minimate Tangential Flow Filtration Capsules, Tangential Flow Filtration Reservoir Assembly : These disposable tangential flow filtration devices ac
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Summary. Single-pass tangential flow filtration (SPTFF) followed by multi-column chromatography (MCC) was used to continuously process a cell culture supernatant containing a monoclonal antibody (MAb) via Protein A affinity chromatography. This study demonstrates the benefit of such a combination in term of process robustness, productivity and economics of continuous processing. The SPTFF technique can readily be implemented for continuous processing via automated skids, and the flexibility of the technique allows for better control of the purification steps by normalizing the protein concentration from cell culture to chromatography. Moreover, while continuous multi-column operation results in high productivity at high protein titer, combining SPTFF and MCC when a low protein titer is used maintains this process productivity and economical gain compared to conventional batch chromatography. Perfusion cell culture, seen as the method of choice for continuous upstream processing, currently ...
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Middle East and Africa Tangential Flow filtration Market is poised to reach USD 0.13 billion by 2021 - 125 page report by Market Data Forecast
Tangential Flow Filtration Market size is expected to reach USD 1105.34 million by 2024 and is predicted to grow at a CAGR of 12%.
The spread of airborne transmissible disease such as PRRS continues to be a serious threat to the Canadian swine industry as this disease causes significant economic losses to infected herds. Th is project aimed to develop an additional line of defense against infection of airborne diseases by designing an air filtration system for a swine transport trailer to maintain a pathogen-free environment inside the trailer during transport. Testing and evaluation of the prototype air filtration system showed that the use of antimicrobial filters (i.e., MERV 16 and fabric bag filters) can effectively capture bioaerosols in the air and prevent their entry into the animal compartment of the trailer.. Field Testing of an Air Filtration System for Transport (View pdf). ...
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The need for water filtration at homes, offices, schools, hospitals and other public places is felt in the present times more than ever before. There are reports of thousands of contaminants in supply water which is believed to be cleaner than water obtained from wells or springs. These can be industrial wastes, agricultural runoffs or pharmaceutical schemicals or even microscopic germs and bacteria. These can impair human nervous system and digestive system if consumed over a long period of time. A number of water filtration systems have been developed which help to remove various kinds of impurities from water. The most popular is carbon block filtration method which incorporates a cartridge filled with activated carbon granules which absorb impurities like a sponge. The cartridge gets choked with impurities over a period of time and needs to be replaced. There are other water filtration systems invented where no filter replacement is involved.. Crystal Quest is a brand which makes counter top ...
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Its something you do usually in the morning and evening and probably without much thought. Taking a shower! Did you know that chlorine is commonly used to disinfect tap water, which can lead to dry skin and irritated eyes? Chlorine and chlorine by-product vapors can aggravate symptoms for many asthma, allergy, sinus and emphysema suffers. Pregnant women, babies, children and the elderly are particularly vulnerable. Empower yourself by finding out whats in your tap water today! What can you do about it? Introducing The Deluxe Showerwise Filtration System from Waterwise, which removes 95% of the chlorine from your water and also reduces iron, lead, mercury, hydrogen sulfide (sulphur), several types of bacteria, algae, fungi and mold! While other shower filtration systems require that you change out the filter every few weeks, The Deluxe Showerwise Filtration System lasts FAR longer, with each filter cartridge (purchased separately) lasting 15,000 gallons or 12-18 months and is easy to replace. ...
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Each of the sites upon which a creek filtration system was built was different, and presented its own unique challenges that needed to be addressed during design. Site specific challenges included managing erosion risk and soil type, as well as flow velocities on the sites with larger catchments. Timing construction to avoid damaging storms also proved to be a challenge on one site.. More generally though, the short duration of the program (several years, compared to an ongoing, rolling program of work) posed some challenges of its own. For ongoing programs of work, relationships and processes are established and maintained over time. These ensure the smooth and timely delivery of the program. In the case of the creek filtration systems these relationships and processes needed to be established from scratch. They continued to evolve as the creek filtration systems were rolled out.. Construction and ongoing costs ...
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A filter cartridge (5), suitable for attachment to a respiratory mask, has a housing that includes an air inlet (27), an air outlet (39), and filter material (17, 19) through which air to be filtered travels through when passing from the inlet to the outlet. At least part of the housing includes a sheet material (23) that is thermo-formed around the sides of the filter material.
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Described is an adsorptive filter material, in particular for ABC protective clothing, preferably for wearing on the skin, in particular as Undergarment (underwear), wherein the Adsorptionsfiltermaterial has a multilayer structure, wherein the multilayer structure, a first textile sheet material, a second textile sheet material and between the comprises first and second textile sheet material arranged adsorption layer, wherein the adsorption layer discrete, in particular granular, preferably spherical, chemical and / or biological toxins and pollutants, in particular warfare agents, adsorbent sorbent particles, preferably based on activated carbon has. The adsorption filter material is characterized in that the first textile sheet material and the second textile sheet material are respectively elastic in at least one direction, preferably in both directions, and / or that the first textile sheet material and the second textile sheet material have at least substantially equal elasticity properties
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Ultraviolet (UV) radiation is sometimes employed in water purification systems for tropical freshwater, marine, cool water and pond systems. UV sterilization can be very effective in reducing free-floating algae, bacteria and other microscopic planktonic organisms.. UV and near U. radiation, 295 to 400 nm (nanometers) has also been documented to aid in oxidation of organics, phosphate and nitrogenous compounds through the production of ozone (O3).. Though the disease-reducing benefits above are considerable in producing and maintaining a favorable environment, UV sterilization should not be relied on as the principal part of a filtration system. UV purification is a very useful addition to an otherwise appropriate filtration system.. This article describes the pros and cons of UV use and appropriate application in re-circulated pond systems.. Cons:. UV light is indiscriminate in the destruction of free-floating micro-organisms. It kills good guys as well as bad. These beneficial microbes are ...
Vento Global, Eastern Europe and central Asia distributor for OEI and BPS, has announced industrial magnetic filtration systems for sustainability and reduced downtime of stationary equipment.Karlovac, Croatia, May 08, 2021 (GLOBE NEWSWIRE) -- Vento Global, the distributor of heavy industry engineering solutions, has announced a magnetic filtration system for stationary equipment that aligns with the energy sectors sustainability goals. Further information is available at https://www.ventoglobal.com The announcement comes at a time of mounting pressure on the oil and gas industries to satisfy global sustainability imperatives. According to a Reuters survey, about three-quarters of extractive industry sustainability professionals strongly support the industrys sustainability goals. Vento Global, in partnership with One Eye Industries (OEI) and Black Powder Solutions (BPS), provides magnetic filtration technology to extend the life of turbines, rotational equipment, gearboxes, hydraulics, pumps, valves,
Porvair Filtration Group has signed a long-term agreement with Parker Aerospace to provide filtration systems for Parkers on-board aircraft fuel tank inerting systems.. The agreement secures sales to Porvair that are expected to exceed $40m (£25.4m) over 10 years.. Parkers lightweight system removes oxygen from a source of engine-bleed air with an air separation module (ASM), before delivering nitrogen-enriched air into the aircraft fuel tanks.. It is essential that these ASM modules are protected by Porvairs filtration system, as they are particularly sensitive to contamination.. ...
As a leader in Americas food production industry, one client has to constantly develop new processes to keep up with the demand for affordable and reliable nourishment. In 2010, this client began to notice inefficiencies with their Bleached Oil Filtration system located at their Memphis, TN plant. The bleaching process is the first of several oil refining steps that cooking oils go through prior to landing on grocery store shelves. After the bleaching process, oils are then deodorized, sterilized, and packaged for shipping.. An analysis of their situation revealed that the bleaching and filtration system had not been updated since 1976 and the low throughput rate was bottlenecking the remaining refinery steps. Even though the system was still operational, it posed several large concerns to operators. For example, the process of bleaching and de-waxing oil results in the accumulation of spent clay and carbon byproducts which are combustible and must be disposed of properly. At that time, the ...
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Ergonomic protective air filtration devices and methods for manufacturing the same are disclosed herein. An ergonomic protective air filtration device includes a stack of at least two layers of an air permeable material, the stack forming a body, a periphery, and a back; a plurality of intersecting three-dimensional V-shaped pleats extending from the periphery and into the stack of layers, so the back of the device defines a breathing chamber adapted to cover a mouth and a nose of the wearer; and a retaining means engaging the body of the device to secure the device to a face of the wearer and to create the breathing chamber. The ergonomic protective air filtration device provides protection against contaminated droplets, fluid splashes, solid particulates, pathogenic microorganisms, or aerosoled air pollutions.
is the trans endothelial solvent filtration volume per second.. *. [. P. c. −. P. i. ]. −. σ. [. π. p. −. π. i. ]. {\ ... Filtration coefficient[edit]. Main article: Filtration coefficient. In some texts the product of hydraulic conductivity and ... is the surface area for filtration (SI units of m2) *the product L. p. {\displaystyle L_{p}}. ·. S. {\displaystyle S}. is ... is more familiarly known as the glomerular filtration rate (GFR). In the rest of the body's capillaries, J. v. {\displaystyle J ...
Water filtration[edit]. The stormwater retention provided by urban forests can provide monetary savings even in arid regions ... Communities that rely on well-water may also see a positive change in water purity due to filtration.[27][28] The amenities ...
Cloth filters or sari filtration, though very basic, have significantly reduced the occurrence of cholera when used in poor ... or antimicrobial filtration in any area where cholera may be present. Chlorination and boiling are often the least expensive ...
Slow "artificial" filtration (a variation of bank filtration) to the ground, Water purification plant Káraný, Czech Republic ... Effective filtration extends into the depth of the filter. This property of the filter is key to its operation: if the top ... Filtration depends on the development of a thin biological layer, called the zoogleal layer or Schmutzdecke, on the surface of ... Filtration. After separating most floc, the water is filtered as the final step to remove remaining suspended particles and ...
Filtration[edit]. Filtration, which takes place at the renal corpuscle, is the process by which cells and large proteins are ... Filtration fraction[edit]. The filtration fraction is the amount of plasma that is actually filtered through the kidney. This ... Filtration occurs in the glomerulus: one-fifth of the blood volume that enters the kidneys is filtered. Examples of substances ... After filtration occurs, the blood moves through a small network of venules that converge into interlobular veins. As with the ...
Purification and filtration[edit]. Activated carbon. Charcoal may be activated to increase its effectiveness as a filter. ...
Howard, J (2003), Guidance for Filtration and Air-Cleaning Systems to Protect Building Environments from Airborne Chemical, ... Air cleaning and filtration removes particles, contaminants, vapors and gases from the air. The filtered and cleaned air then ... Along with CADR, filtration performance is very important when it comes to the air in our indoor environment. Filter ... 7 Air filtration and cleaning *7.1 Clean air delivery rate and filter performance ...
Filtration[edit]. Lycopodium club moss spores (diameter about 60 micrometers) captured on an electrospun polyvinyl alcohol ... Electrospinning of micro- and nanofibers: fundamentals and applications in separation and filtration processes, Y. Fillatov, A ... D. Letterman) (2007) Electrospinning of micro- and nanofibers: fundamentals and applications in separation and filtration ... Polymeric nanofibers have been used in air filtration applications for more than seven decades.[37][47] Because of poor bulk ...
Mechanical and chemical filtration[edit]. The process of mechanical filtration removes particulate material from the water ... Biological filtration and the nitrogen cycle[edit]. A large shower biological filter designed to maximize the beneficial ... Materials suitable for aquarium filtration[edit]. Sponges, plastic balls, ceramic tubes and gravel are all suitable for ... Mechanical filtration is ultimately ineffective if the solid wastes are not removed from the filter, and are allowed to decay ...
is a filtration, i.e. F. s. ⊂. F. t. {\displaystyle {\mathcal {F}}_{s}\subset {\mathcal {F}}_{t}}. when s. ,. t. {\displaystyle ... and filtration {. F. 0. ,. F. 1. ,. …. }. {\displaystyle \left\{{\mathcal {F}}_{0},{\mathcal {F}}_{1},\dots \right\}}. such ... is a martingale,[2] namely Doob martingale, with respect to filtration {. F. 0. ,. F. 1. ,. …. }. {\displaystyle \left\{{\ ... process which approximates a given random variable and has the martingale property with respect to the given filtration. It may ...
Water filtration: Media filters use sand for filtering water.. *Wuḍūʾ: the Islamic procedure for washing parts of the body. ...
By volume filtration the particles are caught in the bulk of the filter paper. By surface filtration the particles are caught ... Filtration of oil is normally done with volume filtration. Filter papers for lubrication oils are impregnated to resist high ... ISBN 952-5216-18-7. "Filtration Techniques" (PDF). Filtration Techniques. Retrieved 2015-11-21. "Filter Papers and Membranes" ( ... The crêping allows the coffee to flow freely between the filter and the filtration funnel. The raw materials (pulp) for the ...
Chronic:Glomerular filtration rate (GFR) , 15[6]. Treatment. Acute: Depends on the cause[7]. Chronic: Hemodialysis, peritoneal ... Glomerular filtration rate. A normal GFR varies according to many factors, including sex, age, body size and ethnic background ... Renal professionals consider the glomerular filtration rate (GFR) to be the best overall index of kidney function.[30] The ... Chronic kidney failure is measured in five stages, which are calculated using a patient's GFR, or glomerular filtration rate. ...
Provides data filtration.. The library is highly optimized for performance, with critical code paths written in Cython or C.[7] ...
Glomerular filtration rate[edit]. Main article: Glomerular filtration rate. The glomerular filtration rate (GFR) describes the ... "Glomerular Filtration Rate" *^ Ganong (2016). "Renal Function & Micturition". Review of Medical Physiology, 25th ed. McGraw- ... The GFR is typically recorded in units of volume per time, e.g., milliliters per minute (mL/min). Compare to filtration ... Each nephron begins with a filtration component that filters the blood entering the kidney. This filtrate then flows along the ...
In order to protect the spinnerets, an efficient filtration of the melt is, in any case is necessary. For the time-being, the ... Therefore, besides efficient sorting, the removal of visible impurity particles by melt filtration processes plays a particular ... dℓ/g by adding small quantities of ethylene glycol and by subjecting the low-viscosity melt stream to an efficient filtration ...
Paul: Johnson Filtration Systems. ISBN 978-0-9616456-0-1.. *. Raymond Rowles (1995). Drilling for Water (2nd ed.). Avebury, ... After the filtration process, it is common to implement an Ultraviolet (UV) system to kill pathogens in the water. UV light ... Most of these treatment methods involve the filtration of the contaminants of concern, and additional protection may be ...
"Laboratory Apparatus , Filtration , Laboratories". Scribd. "Clamp Holder". Thomas Scientific. Zubrick, James. "Clamps and ...
"Barossa Reservoir" (PDF). "Filtration". SA Water, Government of South Australia. Retrieved 23 August 2012. "Barossa Dam, South ... In addition to Gawler and country, a filtration plant constructed in 1982 allows the Reservoir to supply the suburbs of Munno ...
Filtration. It consist in a filter that does not allow every sperm to pass. It is less used nowadays and only spermatozoa with ...
External filtration systems provide the added benefit of increasing the overall volume of water and its dilution effect. For ... This problem is most often addressed through filtration. Activated carbon filters absorb nitrogen compounds and other toxins ... Capacity can also be increased with the addition of external filtration which increases the total volume of water in the ... This same concept extends to the filtration system as well, external (outside of the tank) systems in particular. Generally ...
The solution to the equation is known as the net filtration or net fluid movement (Jv). If positive, fluid will tend to leave ... the capillary (filtration). If negative, fluid will tend to enter the capillary (absorption). This equation has a number of ...
Filtration/Infiltration practices: filtering; infiltration; rain gardens; porous pavement; civic infrastructure and design; ... and filtration or biological and chemical actions.[12] BMPs also can improve receiving-water quality by extending the duration ...
Maintains glomerular filtration rate skeletal muscular circulation. 17%[3]. Perfusion increases dramatically during exercise. ...
Filtration using ceramic filters. *Solar disinfection - Solar disinfection is an effective method, especially when no chemical ...
"What is DEF?" (PDF). Cummins Filtration. "ISO 22241-4:2019 Diesel engines - NOx reduction agent AUS 32". ISO (International ...
Later, a pipeline was built to bring water from the Patuxent River at Mink Hollow to the filtration plant in Burnt Mills. In ... "Water Filtration". WSSC. 2019-01-16. "Wastewater Treatment". WSSC. 2018-05-08. "Innovation: Burnt Mills Plant". WSSC. Retrieved ... To provide additional capacity, the commission bought a used water filtration plant from Culpeper, Virginia, and installed the ... The agency operates 3 reservoirs (plus shared access to a fourth reservoir), 2 drinking water filtration plants, and 6 ...
"Penguin Filtration". oregonzoo.org. Oregon Zoo. Retrieved 2017-01-01. "Polar Passage". oregonzoo.org. Oregon Zoo. Retrieved ...
Pre coat filtration is an ideal method to produce a high clarity of filtrate. Basically, the drum surface is pre coated with a ... The filtration area ranges from 0.5 m2 to 125 m2. Disregarding the size of the design, filter cloth washing is a priority as it ... Filtration efficiencies can also be improved in terms dryness of filter cake by significantly preventing filtrate liquid from ... Scraper discharge is used if the desired separation requires high filtration rate or if heavy solid slurry is used or if the ...
"Chill Filtration". Whiskey Basics. Whisky for Everyone. Retrieved 21 March 2013. Andrews, Allen (2002). The Whisky Barons. ... Traditionally, American distillers focused on secondary filtration using charcoal, gravel, sand, or linen to remove undesired ... filtration, and colouration. Extraction in particular results in whisky acquiring a number of compounds, including aldehydes ...
Include both air filtration and liquid filtration (including oil, paint and water), and includes both multi-step systems and ... Process Filtration & Purification. Process Filtration & Purification Water Filtration. Water Filtration Categories. Industries ...
Under Sink Filtration. Under Sink Filtration Water Treatment Systems. Water Treatment Systems Whole House Filtration. Whole ... Beverage Appliance Filtration. Beverage Appliance Filtration Oven & Steamer Filters. Oven & Steamer Filters ... AP100 Series Whole House Water Filtration Housings - Standard Diameter 3M™ High Flow Series Cold Beverage Water Filtration ... 3M™ Aqua-Pure™ SSEPE Series Whole House Water Filtration Housings - Large Diameter 3M™ Aqua-Pure™ AP100 Series Whole House ...
Glomerular Filtration Rate. Br Med J 1967; 2 doi: https://doi.org/10.1136/bmj.2.5555.837 (Published 24 June 1967) Cite this as ...
... water filtration in an emergency, fema community emergency response team training, emergency evacuation plans and drills, how ... With regard to the micron size limit for filtration, you state that it is 0.7 when the filter is new.. The products have been ... Water filtration in an emergency,pandemic flu disaster plan,emergency response plans and procedures - Plans On 2016 ...
This is called the filtration fraction and on average in healthy individuals is 125/600, or about 20 percent. Thus about one- ... Other articles where Filtration fraction is discussed: renal system: Quantitative tests: ... This is called the filtration fraction and on average in healthy individuals is 125/600, or about 20 percent. Thus about one- ...
Low glomerular filtration rate predicts cardiovascular disease, end stage renal disease (a requirement for dialysis or ... No trials to show whether the benefits of screening for low glomerular filtration rate outweigh the harms have been conducted. ... Glomerular filtration rate Screening cannot be recommended on the basis of current knowledge ... and they recommend measuring serum creatinine to determine estimated glomerular filtration rate in high risk groups.2 The ...
Free shipping at $35 and view current promotions and product reviews on Water Filtration on Walgreens.com. ...
Ceramic filtration programs have been implemented in over 20 countries.. Potters for PeaceExternal. (PFP) is a United States ... Ceramic Filtration Cdc-pdf. [PDF - 2 pages]. Locally manufactured ceramic filters have traditionally been used throughout the ... Ceramic filtration is most appropriate in areas where there is capacity for quality ceramics filter production, a distribution ... The drawbacks of ceramic filtration are:. *Not as effective against viruses. *No chlorine residual protection - can lead to ...
... water filtration vs reverse osmosis inversa, how to make a health kit in the last of us, car battery for 65 mustang length ... These gas masks work using the same process that some water filtration systems use; carbon filtration.. When one liquid is ... Know the difference between water filtration and water softening systems? Or water filtration and reverse osmosis? If not, ... Comments to «Water filtration vs reverse osmosis inversa». * cazibedar. writes: 26.03.2016 at 16:12:30 This is safer for the ...
What is a glomerular filtration rate test?. Your kidneys are your bodys main filtration system. They remove waste products ... Glomerular Filtration Rate Test. Medically reviewed by Modern Weng, D.O. - Written by Rachel Nall, MSN, CRNA - Updated on ... How is a glomerular filtration rate test performed?. A GFR test is a simple blood test that doesnt require you to do anything ... Why do I need a glomerular filtration rate test?. The GFR test can indicate how well your kidneys are functioning. Your doctor ...
About HVAC Filtration Division. For over 50 years, Parker has been improving the quality of air all around the world with ... Parkers HVAC Filtration Division is an industry expert committed to engineering our customers success and working closely ... Where to Buy HVAC Filtration Products. Parkers worldwide distribution network makes it convenient to get the products you need ... An Impressive Legacy of Filtration Brands. From CLARCOR® and Airguard® to ATI™ and Purolator®, Parker is a trusted single ...
Aerospace Filtration Division. 8439 Triad Drive. Greensboro, NC 27409. USA. Ph: 336-668-4444. Fax: 336-668-4452. [email protected] ... Aerospace Filtration Division. 8439 Triad Drive. Greensboro, NC 27409. USA. Ph: 336-668-4444. Fax: 336-668-4452. [email protected] ...
Low Retention Filtration Systems-Save Every Time You Filter. Filtration. How can you reduce valuable media and reagent loss? ... During filtration, all systems retain some liquid that cannot be recovered-also known as "hold-up" volume. The larger the hold- ... Filtration , Life-Sciences , Corning. We use cookies to ensure the best experience on our website. ... Corning filtration systems feature a .22µm PES membrane to deliver fast flow, with low protein binding, helping increase ...
A Swedish company has launched the OrbSys recycling shower - a new kind of shower that saves up to 90% of the water and 80% of the energy consumed by a normal shower. The shower achieves such huge savings by being a closed-loop, recirculating system, much in the same way that astronauts aboard the International Space Station re-use their waste water. Even if you dont care about the environment, the OrbSys can (apparently) save you more than $1000 per year in water and energy costs.. ...
Slow Sand Filtration Cdc-pdf. [PDF - 2 pages]. A slow sand filter is a sand filter adapted for household use. Please note that ... Slow sand filtration (SSF) is most appropriate where there is funding to subsidize the initial filter cost, available education ... The benefits of slow sand filtration are:. *Proven reduction of protozoa and most bacteria ... The drawbacks of slow sand filtration are:. *Not as effective against viruses ...
One simple safeguard for people who dont want to install home filtration: let the water run for a few minutes before using it ... Regardless of the system, home filtration devices also require a certain amount of vigilance. Filters must be changed ...
The bottle is the worlds first ultra filtration water bottle, and the inventor put all of his life savings into developing it. ... Smart and well done :) @ Zyde: I think the "dirt" is carbon, as part of the filtration system. Theres a company called Aquaovo ... But i dont understand the photos, how come theres dirt in it? Is that part of the filtration process? ... At this inspirational show we discovered the Lifesaver bottle - a beautifully simple concept for portable water filtration, and ...
Source a Large Selection of Silver Filtration Products at water filtration system ,snail secretion filtrate ,vacuum filtration ... China Silver Filtration, China Silver Filtration Suppliers and Manufacturers Directory - ... water filtration system snail secretion filtrate vacuum filtration apparatus oil filtration machines solar water filtration ... Tags: Water Filtration , Pleated Filter For Water Filtration , Metal Fiber Pleated Filter For Water Filtration ...
Glomerular Filtration Rate (GFR). Estimated GFR (eGFR) is a key method for identifying people with chronic kidney disease (CKD ... Estimating glomerular filtration rate. Clin Chem Lab Med. 2009;47:1017-19. ...
Shop our wide selection of water filtration dispenser today. ... These hot deals for water filtration dispenser are already ... New Wave Enviro Products - 10 Stage Under Sink Water Filtration System The New Wave Enviro 10 Stage Under Sink Water Filtration ... Farm House Cold Water Only Point of Use and Filtration Faucet Filtration system FRCNSTR sold separately Available in Polished ... DuPont DuPont QuickTwist 1 Stage Drinking Water Filtration System; Undersink 3000 Series Carbon Block Final Filtration System w ...
Hydraulic filtration systems from Grainger include strainers and filters to help keep your system clean and working at peak ... Hydraulic Filtration 287 products Hydraulic filtration products help keep hydraulic oil clean, which reduces contamination from ... Off-line hydraulic filtration is used to filter hydraulic fluid in a hydraulic system when adding new fluid, charging fluid, or ... Hydraulic tank filtration components attach to tanks to keep fluid clean and free from debris, water, and air. ...
... has begun production at its new filtration products... ... Longkou WIX Filtration Co., Ltd. will serve the rapidly growing ... Our WIX brand and associated filtration products have a strong heritage in the aftermarket, said Keith Wilson, President of ... The new 220,000-square-foot filtration center, located in the Longkou Economic Development Zone, Shandong Province, China, will ... We are thrilled to have his dedication, commitment and support in our filtration endeavor. ...
A combination of using a BEAM Central Vacuum System and a BEAM HEPA Air Filtration are clinically proven to relieve indoor ... BEAM Central Vacuum and HEPA Air Filtration Systems are sold and installed by a network of nearly 800 independent U.S. dealers ... Central vacuum and air filtration systems address those problems by minimizing particulates, dust, dust mites, pet dander, ... bypass filtration system which filters all of the air in the home - in every room. The systems are so effective that St. Louis ...
The use of nanotechnology, howerver, shows potential in the improvement of water filtration membranes.​. ... such as chlorine and membrane-based water filtration systems that are currently being used to control microbial pathogens, is ...
Gravity Driven Membrane Filtration The principle of GDM (Gravity Driven Membrane filtration) has been developed at Eawag in ... Figure 4: Stabilization of flux during Gravity-Driven Membrane filtration (GDM) of several types of surface waters and diluted ...
Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.
Filtration Group Careers. FILTRATION GROUP CORPORATION We are Filtration Group. We are the one global partner that truly ... Product Engineer salaries at Filtration Group can range from $55,676-$77,963. This estimate is based upon 2 Filtration Group ... Looking beyond Filtration Group?. Check out the latest Product Engineer Jobs or see Product Engineer Salaries at other ... Related Searches: All Product Engineer Salaries All Filtration Group Salaries Related Searches: All Product Engineer Salaries ...
The present invention provides a membrane filtration system (,b,1,/b,) including: a filtering membrane portion (,b,3,/b,) for ... As an example of the membrane filtration system, there exists a cross flow filtration type membrane filtration system which ... Next, a method of operating the membrane filtration system 1 will be described. In the membrane filtration system 1, the ... In the membrane filtration system 1, when the water level of the product water tank 5 attains a level H, the control portion 30 ...
6] Menon Labs filtration prototype has an advantage here since the pioneering design eliminates fouling while maintaining flow ... The scope of titania nanotubes is not only limited to water filtration. Given their remarkable capacity to convert light into ... One drawback of membrane filtration, however, is "fouling." Fouling occurs when heavy materials clog the flow of water through ... Increasingly robust regulation has spurred innovation in produced water methods and filtration membranes are leading the way. ...
  • Water filtration typically refers to a whole-house water filter - a system designed to improve certain aspects of the water supply throughout the entire house. (amazonaws.com)
  • Reverse osmosis is the only water filtration system that removes contaminants like fluoride, lead, heavy metals, bacteria, arsenic and chlorine. (amazonaws.com)
  • Your kidneys are your body's main filtration system. (healthline.com)
  • What you need, when you need it - choose the right filtration system and accessories to help protect against contamination and set your cell culture up for success, right from the start. (corning.com)
  • Regardless of the system, home filtration devices also require a certain amount of vigilance. (washingtonpost.com)
  • Premier Whole House Water Filtration System 1' Manual back wash valve 1 CUBIC ft. (bhg.com)
  • This Dupont Filtration system is the perfect whole house water filter for your home or office. (bhg.com)
  • The Austin Springs RO system uses a 5-step filtration process: 1. (bhg.com)
  • Hydraulic filtration products help keep hydraulic oil clean, which reduces contamination from normal and wear and filters contaminants from new air, fluid, or components introduced into the system. (grainger.com)
  • Off-line hydraulic filtration is used to filter hydraulic fluid in a hydraulic system when adding new fluid, charging fluid, or flushing the hydraulic system before adding new fluid. (grainger.com)
  • A combination of using a BEAM Central Vacuum System and a BEAM HEPA Air Filtration are clinically proven to relieve indoor allergies. (prweb.com)
  • Now a way exists to also clean airborne allergens and other suspended particulate right from the air you breathe in your home, by installing a whole house HEPA Bypass Air Filtration System, such as the one made for BEAM. (prweb.com)
  • This system converts your existing forced air HVAC system into a HEPA-pure (99.97% efficient at 0.3 microns) bypass filtration system which filters all of the air in the home - in every room. (prweb.com)
  • The present invention relates to a membrane filtration system which is equipped with a filtering membrane portion for removing impurities in feed water and which returns a part of concentrate from the filtering membrane portion to an upstream side of the filtering membrane portion and discharges a remainder of the concentrate. (freepatentsonline.com)
  • As disclosed in JP 05-220480 A, as a water treatment system for feed water to an apparatus, a membrane filtration system is available which has a filtering membrane portion for filtering impurities contained in feed water, such as dissolved salts. (freepatentsonline.com)
  • In this membrane filtration system, feed water from a feed pump flows into the filtering membrane portion, and impurities contained in the feed water are filtered out. (freepatentsonline.com)
  • Certification: The Brita Faucet Filtration System reduces the following impurities that may be in your tap water. (wegmans.com)
  • The Brita Faucet Filtration System keeps a healthy level of fluoride, a water additive that promotes strong teeth (applies to fluoridated municipal tap water). (wegmans.com)
  • Parker provide a comprehensive range of filtration, refrigeration and purification technologies, covering every part of a compressed air or gas treatment system. (parker.com)
  • A clean screen air filtration system for increasing the filtration of allergens, dust particles, and airborne pollutants from air exiting an air duct. (freepatentsonline.com)
  • In a preferred embodiment, a user may removably attach a clean screen air filtration system assembly to an existing air duct via a magnetic fastening strip affixed along a backside of an air filter frame. (freepatentsonline.com)
  • The magnetic fastening strip may provide an efficient means for removably attaching the clean screen air filtration system assembly to the outside of an existing air duct manufactured from a metallic material. (freepatentsonline.com)
  • The clean screen air filtration system assembly may comprise at least one replaceable air filter. (freepatentsonline.com)
  • and wherein said clean screen air filtration system serves to reduce the passage of allergens, dust particles, and airborne pollutants from exiting said opening of said air duct into an interior room. (freepatentsonline.com)
  • 2. The clean screen air filtration system of claim 1 wherein said ventilation screen comprises said plurality of filtering apertures having extruding slats thereby enlarging the surface area of said plurality of filter apertures serving to filter an increased percentage of said dust particles, said airborne pollutants and said allergens from passing there through. (freepatentsonline.com)
  • 3. The clean screen air filtration system of claim 1 wherein said air filter comprises at least one air filter handle/tab. (freepatentsonline.com)
  • 4. The clean screen air filtration system of claim 1 wherein said air filter frame comprises an inner gap region comprising a filter track for slidably receiving said air filter manipulated via said air filter handle/tab. (freepatentsonline.com)
  • 6. The clean screen air filtration system of claim 5 wherein said clean screen air filtration system assembly comprises a non-magnetic fastening strip using high-grade bonding adhesive for attachment over said magnetic fastening strip thereby allowing said clean screen air filtration system assembly to be non-removably attached to said opening of said air duct, said air duct comprising a non-ferrous material. (freepatentsonline.com)
  • During filtration system maintenance, the filter differential pressure status needs to be checked to determine the filter's estimated life span. (engineeringnews.co.za)
  • Hersey explains that, before starting a filtration system after the holiday season or long periods during which the system was offline, certain steps should be followed. (engineeringnews.co.za)
  • The intake of the filtration system should be free of any obstructions, the filter elements should be installed and sealed, and all of the electrical and rotating equipment should be secure and installed correctly. (engineeringnews.co.za)
  • The Rush Grinding Fluid Filtration system offers an optional magnetic separator prefilter and collection unit to handle high-volume swarf applications with ease. (mddionline.com)
  • Suited for the grinding, honing, and lapping industries, the machine is a high-performance filtration system that uses edge filtration technology. (mddionline.com)
  • The Moen under sink filtration system is compatible with our Sip collection of beverage faucets for beautifully clean water any time. (moen.com)
  • Our easy-to-install system features carbon-block filtration, an electronic filter-life indicator and a limited lifetime warranty. (moen.com)
  • Look for an undersink water filtration system to enjoy refreshing water for cooking and drinking. (pentair.com)
  • Look for a whole house filtration system to reduce sediment in your water. (pentair.com)
  • UltraTemp Filtration is a hot gas filtration system that removes fine particulate, including submicron and ultrafine particles, to extremely low levels. (foodengineeringmag.com)
  • This process is so effective that MIT researchers, publishing a paper in the journal PLOS ONE on Feb. 26, found that the low-tech filtration system can produce up to four liters of clean drinking water per day. (redorbit.com)
  • This sapwood system also doesn't have the drawbacks that come with other more advanced filtration systems. (redorbit.com)
  • After pouring the contaminated water through the sapwood filtration system, the team examined the xylem under a fluorescent microscope, noticing that the bacteria had accumulated around pit membranes within the first few millimeters of the wood. (redorbit.com)
  • He said his team now plans to experiment with other types of sapwood to see if nature's filtration system exists in other trees as well. (redorbit.com)
  • The system can further utilize a membrane filtration system to further treat water from the sequencing batch reactor and produce suitable water. (google.com)
  • 2. The method of claim 1 , further comprising retaining at least a portion of the solids-lean liquor in an equalization tank prior to transferring into the membrane filtration system. (google.com)
  • 3. The method of claim 2 , further comprising introducing a portion of retained solids-lean liquor from the membrane filtration system into the biological reactor. (google.com)
  • 4. The method of claim 3 , further comprising withdrawing treated water through the membrane filtration system. (google.com)
  • 6. The method of claim 5 , wherein fluidly connecting the membrane filtration system comprises fluidly connecting the sequencing batch reactor system upstream of an equalization tank and fluidly connecting the membrane filtration system downstream of the equalization tank. (google.com)
  • 8. The method of claim 7 , further comprising fluidly connecting a solids separator unit downstream of at least one of the solids-reducing biological system and the membrane filtration system. (google.com)
  • 11. The method of claim 10 , further comprising withdrawing permeate water from the membrane filtration system. (google.com)
  • It is also is an extraction and filtration system for combustible dusts according to dust explosion category 1 and explosive dust-air mixtures that are neither self-ignitable nor pyrophoric. (photonics.com)
  • A filter system using at least two filter vessels with a plurality of filter elements having absolute filtration capability. (osti.gov)
  • It is best to design your air system in a way that ensures you're using sufficient filtration with minimal pressure drop. (manufacturing.net)
  • The Microfil ® filtration system is a simple and reliable solution for routine testing of raw materials, beverages and water for microbiological contamination. (sigmaaldrich.com)
  • With our Microfil ® filtration system, you will eliminate time-consuming steps, equipment setup, waste, and autoclaving while improving the productivity of your lab. (sigmaaldrich.com)
  • This cost-effective system uses pre-sterilized, ready-to-use funnels and membranes on our Microfil ® filtration head, for example for use with our EZ-Fit ® Manifold. (sigmaaldrich.com)
  • Due to the membrane support, filtration rates with the Microfil ® filtration system are faster when compared to traditional filtration equipment. (sigmaaldrich.com)
  • The Microfil ® filtration system method has been established with reference to International Standards allowing biological analysis to be conducted under optimum conditions and conforms to International Standards for drinking water and mineral water. (sigmaaldrich.com)
  • Ford 6.0/6.4L Single-Remote Bypass System provides superior filtration performance for Ford 6.0/6.4L engines while working in conjunction with the engine's full-flow oil filter. (amsoil.com)
  • GM 6.6L Single-Remote Bypass System provides superior filtration performance for 2001 to 2016 GM 6.6L engines while working in conjunction with the engine's full-flow oil filter. (amsoil.com)
  • California-based company Tortoise Gear is producing a solar-powered filtration system that can be used nearly anywhere. (trendhunter.com)
  • This new filtration system makes it easier for campers and hikers to access clean drinking water anytime. (trendhunter.com)
  • Premium undersink water filtration system, lead reducing cartridge included. (pentair.com)
  • The DMI-65 is an environmentally friendly, silica sand-based, catalytic action water filtration system. (mining-technology.com)
  • Using the DMI-65 based filtration system in the water management strategy has various benefits such as reduced iron and manganese levels in drinking water to below health authority standards, impurity removal to control deposition, carryover and corrosion in boiler systems, as well as the prevention of clogged water feed systems. (mining-technology.com)
  • This paper discusses the causes of abrasive wear in mobile vehicle hydraulic systems and presents laboratory and field data that show why ultrafine filtration is required to control degradation of fluid system components caused by abrasive wear. (sae.org)
  • Erlab has introduced the Halo, a standalone, ceiling-mounted air filtration system for the laboratory that allows safe reduction of air change rates while simultaneously improving the air quality of the laboratory. (rdmag.com)
  • Glomerular Filtration. (bmj.com)
  • Low glomerular filtration rate predicts cardiovascular disease, end stage renal disease (a requirement for dialysis or transplantation), and death. (bmj.com)
  • 1 In a population based study reported in this week's issue, Hallan and colleagues describe the yield of different screening strategies aimed at identifying people with low glomerular filtration rates. (bmj.com)
  • 1 The guidelines of the United States kidney disease outcomes quality initiative define chronic kidney disease as glomerular filtration rate persistently lower than 60 ml/min/1.73m 2 , persistent urine abnormalities, or clinically relevant anatomical abnormalities, and they recommend measuring serum creatinine to determine estimated glomerular filtration rate in high risk groups. (bmj.com)
  • No trials to show whether the benefits of screening for low glomerular filtration rate outweigh the harms have been conducted. (bmj.com)
  • What is a glomerular filtration rate test? (healthline.com)
  • Your doctor may order a glomerular filtration rate (GFR) test if they suspect your kidneys aren't working properly. (healthline.com)
  • Why do I need a glomerular filtration rate test? (healthline.com)
  • What complications are associated with a glomerular filtration rate test? (healthline.com)
  • The estimated glomerular filtration rate (eGFR) is used to screen for and detect early kidney damage, to help diagnose chronic kidney disease (CKD) , and to monitor kidney status. (labtestsonline.org)
  • the eGFR is a calculated estimate of the actual glomerular filtration rate and is based on your blood creatinine level along with other variables such as your age, sex, and race, depending on the equation used. (labcorp.com)
  • Transforming growth factor-beta and the glomerular filtration barrier. (nih.gov)
  • The increasing burden of chronic kidney disease worldwide and recent advancements in the understanding of pathologic events leading to kidney injury have opened up new potential avenues for therapies to further diminish progression of kidney disease by targeting the glomerular filtration barrier and reducing proteinuria. (nih.gov)
  • The glomerular filtration barrier is affected by many different metabolic and immune-mediated injuries. (nih.gov)
  • In this review we will highlight what is known about TGF-β and how it interacts with the components of glomerular filtration barrier and causes loss of function and proteinuria. (nih.gov)
  • Structure of the glomerular filtration barrier. (nih.gov)
  • Effect of transforming growth factor-beta (TGF-β) on the glomerular filtration barrier. (nih.gov)
  • The glomerular filtration barrier consists of podocytes with their intracellular slit diaphragm proteins, the glomerular basement membrane (GBM), and the endothelial cells with associated glycocalyx. (nih.gov)
  • The aim of this study was to evaluate renal dysfunction by studying glomerular filtration rate (GFR), microalbuminuria, and microscopic examination of urine. (hindawi.com)
  • In a cross-sectional study of 50 patients with chronic visceral leishmaniasis, a decreased glomerular filtration rate (GFR) in 28% of the cases is reported [ 12 ]. (hindawi.com)
  • Based on application, the global Pharmaceutical Membrane Filtration Market is segmented into final product processing, raw material filtration, cell separation, water purification, and air purification. (prnewswire.com)
  • Filtration, as a physical operation is very important in chemistry for the separation of materials of different chemical composition. (wikipedia.org)
  • Filtration differs from sieving, where separation occurs at a single perforated layer (a sieve). (wikipedia.org)
  • Filtration differs from adsorption, where it is not the physical size of particles that causes separation but the effects of surface charge. (wikipedia.org)
  • Whether for preparing, purifying, or extracting a sample, we have the filtration and separation products you need. (coleparmer.com)
  • From sterile membrane filters and syringe filters to bag filters and in-line sanitary strainers, we have the right filtration and separation product for you! (coleparmer.com)
  • The total world sales of filtration and separation equipmentand spares are estimated at US$29.5 billion in 2003. (elsevier.com)
  • This revised and updated 5th edition includes increased coverage on the strategic direction of the industry, plus it offers forecasts, analysis and comment on the filtration and separation industry to 2009.The study also outlines the structure of the global industry, assesses market and technological trends, offers market figures and forecasts to 2009 and identifies the major players. (elsevier.com)
  • The use of nanotechnology, howerver, shows potential in the improvement of water filtration membranes. (sun.ac.za)
  • The next requires engineering a scalable application, which Professor Menon has undertaken through her startup, Menon Laboratories , where filtration membranes harnessing the potency of titania nanotubes are currently being developed for industrial use. (northeastern.edu)
  • Increasingly robust regulation has spurred innovation in produced water methods and filtration membranes are leading the way. (northeastern.edu)
  • Microporous membrane filters and filtration devices containing such microporous membranes have become especially useful with many of the recently developed cell and tissue culture techniques and assays, particularly those in the field of virology and immunology. (google.ca)
  • With such filtration plates, especially those containing microporous membranes, there is a well recognized and recurrent problem in that liquid in the wells tends to pass through the membrane by capillary action and gravity flow thereby causing a loss of contents from within the reaction well. (google.ca)
  • Today's filtration membranes have nanoscale pores that are not something you can manufacture in a garage very easily," said Karnik, one of the study coauthors. (redorbit.com)
  • Know the difference between water filtration and water softening systems? (amazonaws.com)
  • Watch this short video to see how Corning® filtration systems help minimize waste, which can add up to big savings over time. (corning.com)
  • With its low-profile support, Corning filtration systems deliver the lowest hold-up volume of any major brand to reduce the loss of valuable media and other reagents. (corning.com)
  • Corning filtration systems feature a .22µm PES membrane to deliver fast flow, with low protein binding, helping increase filtration rates to save precious time in the lab. (corning.com)
  • Corning offers complete filtration systems as part of our comprehensive, beginning-to-end cell culture product portfolio that includes vessels, surfaces, and media-all designed to optimize your cell culture success. (corning.com)
  • During filtration, all systems retain some liquid that cannot be recovered-also known as "hold-up" volume. (corning.com)
  • With Corning® low retention filtration systems-shown to offer the lowest hold-up volume of all major brands-you'll reduce waste every time you filter. (corning.com)
  • Scientific advances in cancer cell biology are changing the paradigm in oncology cell culture research, with Corning® cell culture solutions and filtration systems an integral part of the mix. (corning.com)
  • Many distributors offer Corning filtration systems and accessories. (corning.com)
  • DuPont faucet mount water filtration systems offer economical, high performance filtration and better tasting water in one convenient filter. (bhg.com)
  • Central vacuum and air filtration systems address those problems by minimizing particulates, dust, dust mites, pet dander, pollen and other allergens from interior surfaces and indoor air. (prweb.com)
  • BEAM Central Vacuum and HEPA Air Filtration Systems are sold and installed by a network of nearly 800 independent U.S. dealers. (prweb.com)
  • While one sixth of the world population does not have access to safe water, the reliability of chemical disinfectants, such as chlorine and membrane-based water filtration systems that are currently being used to control microbial pathogens, is in question. (sun.ac.za)
  • Key players in the Pharmaceutical Membrane Filtration Market include Merck KGaA ( Germany ), General Healthcare Company (U.K.), Pall Corporation (U.S.), Sartorius Stedim Biotech Group ( France ), Alfa Laval ( Sweden ), Graver Technologies, LLC (U.S.), Koch Membrane Systems Inc. (U.S.), GEA Group ( Germany ), and Novasep (U.S. (prnewswire.com)
  • The Hyatt filters were installed, along with pump houses and filtration basins, to form "one of the West s first" filtration systems, now part of a Historic Engineering Landmark. (hmdb.org)
  • The Aria water treatment and Septra CB water filtration systems from Pall Systems remove contaminants from incoming water and process it to levels exceeding water quality standards set by the FDA and EPA, according to the company. (foodengineeringmag.com)
  • FFT offers a maintenance service to prepare filtration systems for extended shutdown and quick start-up after the holiday season, he adds. (engineeringnews.co.za)
  • Eaton Filtration's range of filtration systems includes Bag filters for liquid filtration, Mechanically Cleaned Filters, Tubular Backwashing Filters, Gas/Liquid Separators and Pipeline Strainers. (ferret.com.au)
  • Rohit Karnik, an associate professor of mechanical engineering at MIT , says that this sapwood is a low-cost efficient material for filtering water and could go a long way in helping rural communities where advanced filtration systems may not be accessible. (redorbit.com)
  • However, the vessels in flowering trees are much longer, which could ruin their chances of being feasible filtration systems. (redorbit.com)
  • The stationary extraction and filtration unit is equipped with stepless volume flow control, filter condition indicator and interface for control by means of external systems. (photonics.com)
  • The filtration unit OFCM 7 with ContaminationSensor CS 1000 is a portable service unit for filling hydraulic systems, rinsing smaller hydraulic systems and offline filtration. (hannovermesse.de)
  • This month, they ask: What safety factors should food manufacturers consider when implementing filtration systems in their facilities? (manufacturing.net)
  • 15 similar articles, including: eco water pitchers, radiation water purifiers, and stylish filtration systems. (trendhunter.com)
  • Farris, J., "The Importance of Silt Removal Filtration in Mobile Vehicle Hydraulic Systems," SAE Technical Paper 690606, 1969, https://doi.org/10.4271/690606 . (sae.org)
  • Austin, Dallas , Nov. 01, 2019 (GLOBE NEWSWIRE) -- The growing demand for high efficiency air filtration systems comes alongside an increased focus on the health dangers of air pollution. (yahoo.com)
  • High efficiency air filtration systems are a common solution used to protect a building's occupants and equipment from contaminants found in indoor air. (yahoo.com)
  • The final product processing segment is further divided into active pharmaceutical ingredient (API) filtration, sterile filtration, protein purification, vaccines & antibody processing, formulation & filling solutions, and viral clearance. (prnewswire.com)
  • Water purification processes may include filtration, sedimentation, and distillation. (thewaterpage.com)
  • Water filtration processing centers may incorporate microbiological and chemical analysis to determine the appropriate purification method. (thewaterpage.com)
  • The new water filtration plant would be equipped with the latest purification technology and will provide clean drinking water to over 40 thousand people in four villages of Shangus block of Anantnag. (yahoo.com)
  • This is attributed to the more usage of sterile filtration techniques in manufacturing process involved in pharmaceutical & biotechnology companies. (mynewsdesk.com)
  • Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions. (amazonaws.com)
  • Or water filtration and reverse osmosis? (amazonaws.com)
  • Filtration differs from removal of magnetic contaminants from fluids with magnets (typically lubrication oil, coolants and fuel oils), because there is no filter medium. (wikipedia.org)
  • Simple water filtration procedures, such as boiling, iodine, and activated carbon filters, fail to remove all of the contaminants present in the water. (thewaterpage.com)
  • Most water filtration facilities use a rapid sand filter to move water vertically through activated carbon, where the top layer removes all organic compounds and all existing contaminants. (thewaterpage.com)
  • Parker's HVAC Filtration Division employs the latest innovative and patented technologies, proprietary materials, and testing methods to engineer filters that outperform and outlast similar products on the market. (parker.com)
  • The new 220,000-square-foot filtration center, located in the Longkou Economic Development Zone, Shandong Province , China , will manufacture filtration products for light and heavy-duty vehicles. (prnewswire.com)
  • Our WIX brand and associated filtration products have a strong heritage in the aftermarket,' said Keith Wilson , President of Affinia Global Filtration. (prnewswire.com)
  • The high growth in this segment is primarily attributed to the high adoption rate of membrane filtration products. (prnewswire.com)
  • Our nonwovens products provide excellent performance in liquid/gas separators, liquid/liquid coalescers and solid/liquid filtration. (jm.com)
  • Quickly perform filtrations required in the microbiological analysis of water, food and beverages, pharmaceutical and cosmetic products. (sartorius.com)
  • From ultrafiltration to macrofiltration, we offer a full line of laboratory filtration and process filtration products. (coleparmer.com)
  • In order to improve the air quality, MANN+HUMMEL offers various filtration products to reduce fine dust pollution. (mann-hummel.com)
  • They supply a variety of infrastructure and construction products and equipment that include filtration equipment, pipeline equipment and valves and pigging equipment. (ferret.com.au)
  • In its twenty-first year of servicing the heating, ventilation and air conditioning (HVAC) industry, local air-filtration and dust-collection products manufacturer Filtaire SA has completed a significant enhancement to its production plant, with the acquisition of an additional 16 sewing machines and the addition of seven new production staff. (engineeringnews.co.za)
  • Meanwhile, Croucamp explains that the local air-filtration industry has undergone significant changes in the past few years, largely owing to technological advancements and the creation of new products that have improved indoor air quality. (engineeringnews.co.za)
  • This report on the market for bioprocess filtration is categorized into the following segments: by technology, by products, by end use, and by application. (globenewswire.com)
  • Additionally, the report will cover the current dynamics and trends that are driving the demand for bioprocess filtration products, key manufacturers of bioprocess filtration products and the recent industry associations. (globenewswire.com)
  • Glass nonwovens air laid produced in the Americas for liquid filtration. (jm.com)
  • Synthetic spunbond nonwovens produced in the Americas for liquid filtration. (jm.com)
  • Evalith® 040 for liquid/gas separators, liquid/liquid coalescers and solid/liquid filtration are thermally-bonded continuous filament polyester nonwovens manufactured using bico technology. (jm.com)
  • They are well suited as medium for liquid filtration. (jm.com)
  • Synthetic meltblown produced in the Americas for liquid filtration. (jm.com)
  • These Evalith® media are meltblown polypropylene (PP) or polyester (PBT) liquid filtration medias, both calendared and uncalendared, and single- or multi-layered. (jm.com)
  • For example, in animals (including humans), renal filtration removes waste from the blood, and in water treatment and sewage treatment, undesirable constituents are removed by absorption into a biological film grown on or in the filter medium, as in slow sand filtration. (wikipedia.org)
  • Damage to any of the components of the filtration barrier can initiate proteinuria and renal fibrosis. (nih.gov)
  • With regard to the micron size limit for filtration, you state that it is 0.7 when the filter is new. (amazonaws.com)
  • Ceramic filtration is most appropriate in areas where there is capacity for quality ceramics filter production, a distribution network for replacement of broken parts, and user training on how to correctly maintain and use the filter. (cdc.gov)
  • One of the largest ceramic filtration programs is in Cambodia, where two NGOs both worked with PFP to establish filter factories. (cdc.gov)
  • Users can maintain flow rate by cleaning the filter through agitating the top level of sand, or by pre-treating turbid water before filtration. (cdc.gov)
  • Slow sand filtration (SSF) is most appropriate where there is funding to subsidize the initial filter cost, available education for use and maintenance, locally-available sand, and a transportation network able to move the filter. (cdc.gov)
  • Field-tested filter cloths as well as comprehensive consultation for all filtration-related processes complete our product and service offerings. (environmental-expert.com)
  • We are US based manufacturers of commercial liquid filters, industrial filtration components, sealed filter elements and press elements. (environmental-expert.com)
  • Evalith® LF is a voluminous, bio-soluble micro glass filter medium for pure mechanical filtration with excellent filtration properties. (jm.com)
  • Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass. (wikipedia.org)
  • In filtration, a multilayer lattice retains those particles that are unable to follow the tortuous channels of the filter. (wikipedia.org)
  • One of the most important measures to prevent the formation of crystals in the funnel and to undergo effective hot filtration is the use stemless filter funnel. (wikipedia.org)
  • Due to the absence of stem in the filter funnel, there is a decrease in the surface area of contact between the solution and the stem of the filter funnel, hence preventing re-crystallization of solid in the funnel, adversely affecting filtration process. (wikipedia.org)
  • A multi-well filtration apparatus for the assay of microliter quantities is provided wherein a filter is positioned in each well on a plate having an open spout positioned in the plate. (google.ca)
  • 26. A portable personal air filtration device that doesn't use a face mask or face shield and is worn on the user's person wherein the air inhaled by the user is diluted with 20% or more by volume of air that has not passed through the filter of said device. (google.com)
  • With filters being exposed to a much broader range of particle sizes, which requires higher levels of filtration maintenance, filter technology manufacturer Freudenberg Filtration Technologies (FFT) says attention should be drawn to the new ISO 16890 standard for filter testing and assessment. (engineeringnews.co.za)
  • As its name suggests, with surface filtration the particles are stopped at the surface layer of the filter medium. (bekaert.com)
  • In surface filtration, the cake formation will cause an increasing pressure drop across the filter. (bekaert.com)
  • It's the same problem with water filtration where we want to filter out microbes but maintain a high flow rate. (redorbit.com)
  • An expression for dimensionless filter coefficient relating all physical variables of filtration is obtained by dimensional analysis. (asce.org)
  • By technology, the market for bioprocess filtration is categorized into tangential flow/cross flow filtration, depth filtration and normal filtration segments. (globenewswire.com)
  • Filtration is used to separate particles and fluid in a suspension, where the fluid can be a liquid, a gas or a supercritical fluid. (wikipedia.org)
  • This cake formation can increase the filtration efficiency, as finer particles are retained in the dense cake. (bekaert.com)
  • The invention relates to filtration media having nanocrystals of metal oxides, encapsulated in or impregnated into a binder matrix, which binds together particles of activated carbon. (google.es)
  • 5. The filtration media of claim 1 , wherein the activated carbon particles have particle sizes ranging between about 30 μm and about 500 μm. (google.es)
  • If the removed particles fail to settle out of the solution, then the water treatment facilities may turn to dissolved air flotation before starting the filtration process. (thewaterpage.com)
  • And for niche industries like agriculture, our pathogen barrier filters provide maximum filtration technology to protect livestock from the catastrophic effects of airborne diseases. (parker.com)
  • Subsequently, this has reduced the cost of installing and operating air-filtration equipment in industrial and commercial industries. (engineeringnews.co.za)
  • Medical, pharmacological, and chemical industries apply water filtration techniques to meet the standards of regulatory bodies. (thewaterpage.com)
  • Filtration units for the microbiological analysis of water, pharmaceuticals, cosmetics, beverages and other liquids. (sartorius.com)
  • This invention relates to laboratory apparatus useful in the assay of biological and biochemical reactants and is particularly concerned with multi-well filtration devices capable of retaining liquids for substantial periods of time prior to performing filtration. (google.ca)
  • In-depth filtration is mainly used for the filtration of liquids. (bekaert.com)
  • Browse companies that make HVAC Makeup-Water Filtration Equipment and view and download their free cad details, revit BIM files, specifications and other content relating to HVAC Makeup-Water Filtration Equipment as well as other product information formated for the architectural community. (arcat.com)
  • The bottle is the world's first ultra filtration water bottle, and the inventor put all of his life savings into developing it. (inhabitat.com)
  • Situated in five locations across Europe in Gateshead (UK), Padova (IT), Etten-Leur (NL), Bad Camberg (DE) and Chomutov (CZ) , Parker GSFE Division provides support for the Parker sub-brands of Parker domnick hunter (non-process filtration ), Parker Hiross , Parker Zander and Parker Balston within the Europe, Middle East and Africa region. (parker.com)
  • The filtration media can be compressed into a filtration block, has low pressure drop, and has excellent microbial removal. (google.es)
  • The standard testing method used in laboratories around the world for microbial analysis of fluids is membrane filtration. (sigmaaldrich.com)
  • Our diverse product offering for paint overspray collection includes filters that meet National Emission Standards for Hazardous Air Pollutants (NESHAP) established by the Environmental Protection Agency (EPA), making our filters and filtration solutions ideal for aerospace, automotive, and furniture applications. (parker.com)
  • ULT AG has announced the LAS 300.81-HFM054, an explosive-atmosphere-certified extraction and filtration unit with H class filtration, suited for the removal of combustible dusts. (photonics.com)
  • The unit has been developed for extraction and filtration of dry dusts that occur during laser processing such as cutting, engraving or structuring. (photonics.com)
  • Sterilizable funnels or presterilized single-use filtration units help to mitigate the risks of secondary contamination and streamline your workflows. (sartorius.com)
  • The filtration R&D team is supported by three global R&D competence centers , one of which focuses on metal fiber filtration media. (bekaert.com)
  • Many of these filtration centers will pump groundwater after it rains. (thewaterpage.com)
  • Water filtration centers will often target artesian springs, boreholes, and wells. (thewaterpage.com)
  • Hydraulic tank filtration components attach to tanks to keep fluid clean and free from debris, water, and air. (grainger.com)
  • Glomerular endothelial cells, the glomerular basement membrane, and podocytes-the three components of the filtration barrier-work together to prevent the loss of protein and at the same time allow passage of water and smaller molecules. (nih.gov)
  • As a result, the apparatus and the solution used are heated in order to prevent the rapid decrease in temperature which in turn, would lead to the crystallization of the solids in the funnel and hinder the filtration process. (wikipedia.org)
  • A common problem with prior art apparatus is that drops from adjacent wells often merge during the filtration step thereby cross-contaminating the samples. (google.ca)
  • The main filtration module consists of two class-M cartridge filters with optional Teflon coating, which are jet stream cleaned at regular intervals. (photonics.com)
  • This report provides a detailed overview of the major drivers, restraints, challenges, opportunities, current market trends, and strategies impacting the global Pharmaceutical Membrane Filtration Market along with the estimates and forecasts of the revenue and market share analysis. (prnewswire.com)
  • In this report, the global Pharmaceutical Membrane Filtration Market has been segmented based on product, technique, application, and region. (prnewswire.com)
  • Based on region, the global Pharmaceutical Membrane Filtration Market is segmented into North America , Asia , Europe , and the Rest of the World (RoW). (prnewswire.com)
  • They are typically used in Fluids Processing, Food & Beverage, Pharmaceutical, Healthcare and other filtration applications. (jm.com)
  • Filtration is an essential process step in pharmaceutical, and bioscientific laboratory applications. (sartorius.com)
  • Dublin, April 16, 2021 (GLOBE NEWSWIRE) -- The "Bioprocess Filtration: Global Markets" report has been added to ResearchAndMarkets.com's offering. (globenewswire.com)
  • The old EN 779 test standard applied exclusively to the particle size 0.4 μm. (engineeringnews.co.za)
  • 4. The filtration media of claim 1 , wherein the nanoparticles have an average particle size ranging from about 20 nm to about 1000 nm. (google.es)
  • The innovation of rapid filtration was new in 1884, patented by John Hyatt, and continued in use at Lake Chabot for well over 50 years. (hmdb.org)
  • Among the advantages of ultrafine filtration are the vehicle manufacturer's reduced warranty and flushing costs, and user benefits of longer fluid and component life, less downtime, fewer spares, and less maintenance man-hours. (sae.org)
  • Parker's next generation MICROGUARD LR filer uses our proprietary N-Fuse™ Technology that provides Sub-HEPA filtration performance. (parker.com)
  • We're excited to bring the best of air filtration and monitoring technology to the general public with Hexa. (prweb.com)
  • For cabin air filtration in vehicles MANN+HUMMEL is now using Nanofiber technology that can be applied to different media and materials. (mann-hummel.com)
  • DMI-65 is a state-of-the-art infusion technology used to produce a catalytic filtration solution that removes iron and manganese from water supplies. (mining-technology.com)
  • Featuring Neutrodine filtration technology, Halo offers a solution to the energy consumption and environmental impact of traditional high air change rates in laboratories. (rdmag.com)
  • In a water filtration vacuum, the hose attaches to the main body of the vacuum, which consists of a fan motor suspended over a shallow basin of water (Figure 1). (ehow.com)
  • Video instructions on how to carry out vacuum filtration. (rsc.org)
  • There are several filtration techniques depending on the desired outcome namely, hot, cold and vacuum filtration. (wikipedia.org)
  • Using non-metal adhesive separators, the process maximizes the available media for high purity filtration and low airflow capacity. (parker.com)
  • He says other bio-filters caused him problems when he cleaned them since they would loose some bio filtration capacity. (actwin.com)
  • Our extensive product offering is designed to meet the most stringent filtration requirements across a variety of markets, helping manufacturers achieve the highest levels of manufacturing productivity while adhering to specific compliances. (parker.com)
  • Product Engineer salaries at Filtration Group can range from $55,676-$77,963. (glassdoor.com)
  • This estimate is based upon 2 Filtration Group Product Engineer salary report(s) provided by employees or estimated based upon statistical methods. (glassdoor.com)
  • Please use the product configurator to find the filtration unit that meets your needs. (sartorius.com)
  • The Aqua Clara Water Filtration Programme, through the Aqua Clara Foundation, has a flagship product known as the ACF bio-sand water purifier. (carbonfund.org)
  • But recirculating indoor air and lacking proper filtration can't continue. (globenewswire.com)
  • Specifically designed for the microbiological and analytical quality assurance for fast filtration in routine analyses. (sartorius.com)