Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.Technetium Tc 99m Sulfur Colloid: A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen.Colloid Cysts: Benign, congenital, neuroepithelial cysts that are typically filled with a viscous mucus. They usually arise in the anterior portion of the THIRD VENTRICLE between the fornices.Technetium Compounds: Inorganic compounds that contain TECHNETIUM as an integral part of the molecule. Technetium 99m (m=metastable) is an isotope of technetium that has a half-life of about 6 hours. Technetium 99, which has a half-life of 210,000 years, is a decay product of technetium 99m.Plasma Substitutes: Any liquid used to replace blood plasma, usually a saline solution, often with serum albumins, dextrans or other preparations. These substances do not enhance the oxygen- carrying capacity of blood, but merely replace the volume. They are also used to treat dehydration.Gold Colloid, Radioactive: A suspension of radioactive gold particles emitting negative beta particles and gamma irradiation. It was formerly used for liver scans and irradiation treatment of some metastatic malignancies.Hydroxyethyl Starch Derivatives: Starches that have been chemically modified so that a percentage of OH groups are substituted with 2-hydroxyethyl ether groups.Tin Compounds: Inorganic compounds that contain tin as an integral part of the molecule.Technetium: The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.Isotonic Solutions: Solutions having the same osmotic pressure as blood serum, or another solution with which they are compared. (From Grant & Hackh's Chemical Dictionary, 5th ed & Dorland, 28th ed)Fluid Therapy: Therapy whose basic objective is to restore the volume and composition of the body fluids to normal with respect to WATER-ELECTROLYTE BALANCE. Fluids may be administered intravenously, orally, by intermittent gavage, or by HYPODERMOCLYSIS.Polygeline: A 3.5 per cent colloidal solution containing urea-cross-linked polymerized peptides. It has a molecular weight of approximately 35,000 and is prepared from gelatin and electrolytes. The polymeric solution is used as a plasma expander.Osmotic Pressure: 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.Lymphoscintigraphy: Radionuclide imaging of the LYMPHATIC SYSTEM.Third Ventricle: A narrow cleft inferior to the CORPUS CALLOSUM, within the DIENCEPHALON, between the paired thalami. Its floor is formed by the HYPOTHALAMUS, its anterior wall by the lamina terminalis, and its roof by EPENDYMA. It communicates with the FOURTH VENTRICLE by the CEREBRAL AQUEDUCT, and with the LATERAL VENTRICLES by the interventricular foramina.Sulfur: An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.Radionuclide Imaging: The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.Antimony: A metallic element that has the atomic symbol Sb, atomic number 51, and atomic weight 121.75. It is used as a metal alloy and as medicinal and poisonous salts. It is toxic and an irritant to the skin and the mucous membranes.Hypovolemia: An abnormally low volume of blood circulating through the body. It may result in hypovolemic shock (see SHOCK).Rehydration Solutions: Fluids restored to the body in order to maintain normal water-electrolyte balance.Thyroid Gland: A highly vascularized endocrine gland consisting of two lobes joined by a thin band of tissue with one lobe on each side of the TRACHEA. It secretes THYROID HORMONES from the follicular cells and CALCITONIN from the parafollicular cells thereby regulating METABOLISM and CALCIUM level in blood, respectively.Tin: A trace element that is required in bone formation. It has the atomic symbol Sn, atomic number 50, and atomic weight 118.71.Technetium Tc 99m Aggregated Albumin: A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in cardiovascular and cerebral circulation.Hemodilution: Reduction of blood viscosity usually by the addition of cell free solutions. Used clinically (1) in states of impaired microcirculation, (2) for replacement of intraoperative blood loss without homologous blood transfusion, and (3) in cardiopulmonary bypass and hypothermia.Resuscitation: The restoration to life or consciousness of one apparently dead. (Dorland, 27th ed)Indium: A metallic element, atomic number 49, atomic weight 114.82, symbol In. It is named from its blue line in the spectrum. (From Dorland, 28th ed)Gelatin: A product formed from skin, white connective tissue, or bone COLLAGEN. It is used as a protein food adjuvant, plasma substitute, hemostatic, suspending agent in pharmaceutical preparations, and in the manufacturing of capsules and suppositories.Silver: Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.Mononuclear Phagocyte System: Mononuclear cells with pronounced phagocytic ability that are distributed extensively in lymphoid and other organs. It includes MACROPHAGES and their precursors; PHAGOCYTES; KUPFFER CELLS; HISTIOCYTES; DENDRITIC CELLS; LANGERHANS CELLS; and MICROGLIA. The term mononuclear phagocyte system has replaced the former reticuloendothelial system, which also included less active phagocytic cells such as fibroblasts and endothelial cells. (From Illustrated Dictionary of Immunology, 2d ed.)Liquid Crystals: Materials in intermediate state between solid and liquid.Albumins: Water-soluble proteins found in egg whites, blood, lymph, and other tissues and fluids. They coagulate upon heating.Rosaniline Dyes: Compounds that contain the triphenylmethane aniline structure found in rosaniline. Many of them have a characteristic magenta color and are used as COLORING AGENTS.Particle Size: Relating to the size of solids.Cysts: Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues.Cerebral Ventriculography: Radiography of the ventricular system of the brain after injection of air or other contrast medium directly into the cerebral ventricles. It is used also for x-ray computed tomography of the cerebral ventricles.Neuroendoscopy: PROCEDURES that use NEUROENDOSCOPES for disease diagnosis and treatment. Neuroendoscopy, generally an integration of the neuroendoscope with a computer-assisted NEURONAVIGATION system, provides guidance in NEUROSURGICAL PROCEDURES.Silanes: Compounds similar to hydrocarbons in which a tetravalent silicon atom replaces the carbon atom. They are very reactive, ignite in air, and form useful derivatives.Serum Albumin: A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules.Technetium Tc 99m Disofenin: A radiopharmaceutical used extensively in cholescintigraphy for the evaluation of hepatobiliary diseases. (From Int Jrnl Rad Appl Inst 1992;43(9):1061-4)Povidone: A polyvinyl polymer of variable molecular weight; used as suspending and dispersing agent and vehicle for pharmaceuticals; also used as blood volume expander.Physics: The study of those aspects of energy and matter in terms of elementary principles and laws. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Hearing Aids: Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)Nuclear Physics: The study of the characteristics, behavior, and internal structures of the atomic nucleus and its interactions with other nuclei. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Health Physics: The science concerned with problems of radiation protection relevant to reducing or preventing radiation exposure, and the effects of ionizing radiation on humans and their environment.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Crowdsourcing: Social media model for enabling public involvement and recruitment in participation. Use of social media to collect feedback and recruit volunteer subjects.Terminology as Topic: The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.Gold: A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.Metal Nanoparticles: Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.Nanoparticles: Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.Nanotechnology: The development and use of techniques to study physical phenomena and construct structures in the nanoscale size range or smaller.Gold Colloid: A suspension of metallic gold particles.

Further studies on the mechanism of adrenaline-induced lipolysis in lipid micelles. (1/993)

Lipase [EC 3.1.1.3] depleted lipid micelles, in which lipolysis was not elicited by adrenaline, were prepared from lipid micelles. When these lipase-depleted lipid micelles incubated with adipose tissue extract containing lipase activity, adrenaline-induced lipolysis was restored to almost the same level as that of native lipid micelles. Adrenaline-induced lipolysis was not restored when the lipase-depleted lipid micelles were homogenized or sonicated. Various tissue extracts from kidney, lung, liver, and pancreas, and post-heparin plasma, which contained lipase activity, restored adrenaline-induced lipolysis in lipase-depleted lipid micelles.  (+info)

Sentinel lymph node biopsy and axillary dissection in breast cancer: results in a large series. (2/993)

BACKGROUND: Axillary lymph node dissection is an established component of the surgical treatment of breast cancer, and is an important procedure in cancer staging; however, it is associated with unpleasant side effects. We have investigated a radioactive tracer-guided procedure that facilitates identification, removal, and pathologic examination of the sentinel lymph node (i.e., the lymph node first receiving lymphatic fluid from the area of the breast containing the tumor) to predict the status of the axilla and to assess the safety of foregoing axillary dissection if the sentinel lymph node shows no involvement. METHODS: We injected 5-10 MBq of 99mTc-labeled colloidal particles of human albumin peritumorally in 376 consecutive patients with breast cancer who were enrolled at the European Institute of Oncology during the period from March 1996 through March 1998. The sentinel lymph node in each case was visualized by lymphoscintigraphy, and its general location was marked on the overlying skin. During breast surgery, the sentinel lymph node was identified for removal by monitoring the acoustic signal from a hand-held gamma ray-detecting probe. Total axillary dissection was then carried out. The pathologic status of the sentinel lymph node was compared with that of the whole axilla. RESULTS: The sentinel lymph node was identified in 371 (98.7%) of the 376 patients and accurately predicted the state of the axilla in 359 (95.5%) of the patients, with 12 false-negative findings (6.7%; 95% confidence interval = 3.5%-11.4%) among a total of 180 patients with positive axillary lymph nodes. CONCLUSIONS: Sentinel lymph node biopsy using a gamma ray-detecting probe allows staging of the axilla with high accuracy in patients with primary breast cancer. A randomized trial is necessary to determine whether axillary dissection may be avoided in those patients with an uninvolved sentinel lymph node.  (+info)

Transport of colloidal particles in lymphatics and vasculature after subcutaneous injection. (3/993)

This study was designed to determine the transport of subcutaneously injected viral-size colloid particles into the lymph and the vascular system in the hind leg of the dog. Transport of two colloid particles, with average size approximately 1 and 0.41 microm, respectively, and with and without leg rotation, was tested. Leg rotation serves to enhance the lymph flow rates. The right femoral vein, lymph vessel, and left femoral artery were cannulated while the animal was under anesthesia, and samples were collected at regular intervals after subcutaneous injection of the particles at the right knee level. The number of particles in the samples were counted under fluorescence microscopy by using a hemocytometer. With and without leg rotation, both particle sets were rapidly taken up into the venous blood and into the lymph fluid. The number of particles carried away from the injection site within the first 5 min was <5% of the injected pool. Particles were also seen in arterial blood samples; this suggests reflow and a prolonged residence time in the blood. These results show that particles the size of viruses are rapidly taken up into the lymphatics and blood vessels after subcutaneous deposition.  (+info)

Perineuronal nets of proteoglycans in the adult mouse brain, with special reference to their reactions to Gomori's ammoniacal silver and Ehrlich's methylene blue. (4/993)

As our previous studies have indicated, many subsets of neurons in the vertebrate brain possess a sulfated proteoglycan surface coat which reacts to cationic iron colloid and aldehyde fuchsin. The present study demonstrated that this surface coat is supravitally stained with Ehrlich's methylene blue, and doubly with this blue and aldehyde fuchsin, a finding suggesting its being identical to Cajal's superficial reticulum (red superficial) and to Golgi's reticular coating (revetement reticulare). The perineuronal surface coat was further stained with Gomori's ammoniacal silver, and doubly with this silver and cationic iron colloid. These neurons with such a proteoglycan surface coat usually expressed cell surface glycoproteins which were labeled with lectin Wisteria floribunda agglutinin. Hyaluronidase digestion did not interfere with this lectin labeling of the glycoproteins, methylene blue and Gomori's ammoniacal silver staining of the surface coat, while it erased the cationic iron colloid and aldehyde fuchsin staining of the surface coat. These findings suggest that the perineuronal proteoglycan surface coat is associated with some additional molecules which are resistant to hyaluronidase digestion and stainable with methylene blue and Gomori's ammoniacal silver. The possibility is suggested that these molecules might represent "ligand proteoglycans" connecting the perineuronal proteoglycans and cell surface glycoproteins.  (+info)

Failure of amphotericin B colloidal dispersion in the treatment of paracoccidioidomycosis. (5/993)

Although amphotericin B desoxycholate is considered the most effective treatment for disseminated Paracoccidioides brasiliensis infections, little is known about the efficacy of lipid-based formulations of amphotericin B in this infection. In this study, we treated four adults with the juvenile form of paracoccidioidomycosis with 3 mg/kg/day of amphotericin B colloidal dispersion for at least 28 days. Although all of the patients initially responded by clinical observation, all four patients relapsed within six months. The use of amphotericin B colloidal dispersion for the initial induction of paracoccidioidomycosis failed to cure this infection. Possible reasons for failure include dose, duration, or reduced efficacy of this lipid preparation. For many fungal infections, lipid-based preparations have been shown to have a therapeutic-toxic advantage, but our experience with Paracoccidioides infections suggests that more careful studies will need to be performed before they can be recommended for use in this mycosis.  (+info)

Osmotic pressure contribution of albumin to colloidal interactions. (6/993)

Two surfaces that come in close contact in a solution with macromolecules present experience an attractive force caused by the osmotic pressure. We present a measurement of this effect by using a micrometer-sized sphere bound to a flat plate through a single molecular attachment in an albumin-containing solution. We obtain the osmotic part of the interaction potential with a resolution of <1 nm and a fraction of kTroom. This attractive interaction is seen to have a range comparable to the size of the albumin molecule. The results are broadly in agreement with a geometric model first proposed by Asakura and Oosawa.  (+info)

The metabolic effects of estriol in female rat liver. (7/993)

The effects of estriol on oxygen uptake, glucose release, lactate and pyruvate production, beta-hydroxybutyrate and acetoacetate production in perfused rat liver as well as, carbon uptake in rat liver and intracellular calcium in isolated Kupffer cells were investigated. Basal oxygen consumption of perfused liver increased significantly in estriol or ethanol-treated rats. But these increased effects were blocked by gadolinium chloride pretreatment. In a metabolic study, pretreatment with estriol resulted in a decrease in glucose production and in glycolysis while an increase in ketogenesis. A more oxidized redox state of the mitochondria was indicated by increased ratios of perfusate [lactate]/[pyruvate] and decreased ratios of perfusate [beta-hydroxybutyrate]/[acetoacetate]. Carbon uptake of Kupffer-cell increased significantly in estriol-treated rats. But these increased uptake were not shown in rats pre-treated by gadolinium chloride blocking phagocytosis. In isolated Kupffer cells from estriol-treated rats, intracellular calcium was more significantly increased after addition of lipopolysaccharide (LPS) than in controls. These findings suggest that the metabolic effects of estriol (two mg per 100 mg body wt) can be summarized to be highly toxic in rat liver, and these findings suggest that oral administration of estrogens may induce hepatic dysfunctions and play a role in the development of liver disease.  (+info)

Phase I and pharmacologic study of 9-aminocamptothecin colloidal dispersion formulation in patients with refractory or relapsed acute leukemia. (8/993)

PURPOSE: Topoisomerase I inhibitors have shown promising anti leukemic activity in acute myelogenous leukemia (AML) and myelodysplastic syndrome. In this phase I study, we investigated the toxicity profile, pharmacokinetics, and activity of a prolonged continuous infusion schedule of the colloidal dispersion formulation of 9-amino-camptothecin (9-AC/CD) in patients with acute leukemia. PATIENTS AND METHODS: Patients with refractory or relapsed AML, acute lymphocytic leukemia (ALL) or chronic myelogenous leukemia in blastic phase (CML-BP) were included in the study. Eligibility criteria were age greater than 15 years, performance status of 2 or better, creatinine < 1.5 mg/dl, and bilirubin < 1.5 mg/dl. 9-AC/CD was given as a continuous intravenous infusion over seven days every three to four weeks. The starting dose was 0.2 mg/m2/d (1.4 mg/m2/course). Courses were given every three to four weeks according to toxicity and anti leukemic efficacy. This phase I study used the classical 3 + 3 design. The dose was escalated by 50% until grade I toxicity was observed, and then by 30% to 35% until the dose limiting toxicity was defined. At the maximal tolerated dose (MTD), 8 to 10 patients were planned to be treated to better define the toxicity and early-activity profiles. RESULTS: Thirty-nine patients (AML thirty-six patients; ALL two patients; CML-BP one patient), median age 56 years, were treated. Severe mucositis was the dose limiting toxicity; it occurred in three of six patients treated at a dose of 1.6 mg/m2/d. The MTD was defined as 1.4 mg/m2/day by the phase I design. Upon expansion of the number of patients, 3 of 10 patients had grade 4 mucositis and 1 of 10 patients had grade 3 diarrhea. Nausea and vomiting were uncommon. No complete or partial remission was observed in 37 evaluable patients. However, 9-AC/CD exhibited antileukemic activity, as reflected by the finding of marrow hypoplasia on day 14 in 46% of the patients. Average steady-state concentration of 9-AC lactone was close to 10 nmol/l, and the of 9-AC lactone area under curve (AUC) was 1409 +/- 705 nmol/l. hr. CONCLUSION: The MTD of 9-AC/CD given as a seven-day continuous infusion was 1.4 mg/m2/d (9.8 mg/m2/course) in patients with acute leukemia. This represents three to fourfold dose escalation compared with the MTD of 9-AC given as shorter continuous infusion (three days) in patients with solid tumors. Future studies will determine the activity of prolonged administration of 9-AC/CD in patients with better prognosis acute leukemia.  (+info)

TY - JOUR. T1 - Measurement of plasma colloid osmotic pressure in neonatal foals under intensive care. T2 - Comparison of direct and indirect methods and the association of COP with selected clinical and clinicopathologic variables. AU - Magdesian, K G. AU - Fielding, C. Langdon. AU - Madigan, John E. PY - 2004/6. Y1 - 2004/6. N2 - Objectives: To describe and compare admission colloid osmotic pressure (COP) measurement using both direct and indirect methods in neonatal foals under intensive care, and to evaluate for associations between COP and clinical/clinicopathologic parameters. Design: Prospective study. Setting: Intensive care unit at a veterinary medical teaching hospital. Animals: Twenty-six critically ill neonatal foals were studied. A control group consisted of 9 clinically healthy neonatal foals. Interventions: Clinicopathologic data were collected at the time of admission. COP was measured directly using a colloid osmometer. Indirect COP was calculated using equations by both ...
|p|This paper describes the preparation and characterization of poly(ethyl cyanoacrylate) colloidal particles loaded with the organic fluorophore Rhodamine 6G. We studied the physicochemical properties of the colloidal particles: morphology, size-distribution, ζ-potential, fluorescent properties and photobleaching upon UV-light illumination. The properties of the obtained colloidal particles, as well as the dye loading efficiency, were found to depend on the concentrations of ethyl cyanoacrylate monomer and Rhodamine 6G in the polymerization medium. The fluorophore release from the colloidal particles in aqueous buffer is also studied. |inline-formula||alternatives| [...] |/alternatives||/inline-formula||/p|
A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules. A natural example of this phenomenon can be found in the gem opal, where spheres of silica assume a close-packed locally periodic structure under moderate compression. Bulk properties of a colloidal crystal depend on composition, particle size, packing arrangement, and degree of regularity. Applications include photonics, materials processing, and the study of self-assembly and phase transitions. IUPAC definition Assembly of colloid particles with a periodic structure that conforms to symmetries familiar from molecular or atomic crystals. Note: Colloidal crystals may be formed in a liquid medium or during drying of particle suspension. A colloidal crystal is a highly ordered array of particles which can be formed over a long range (to about a centimeter). Arrays such as this appear to be analogous to their atomic or molecular counterparts with proper ...
The results of the present study indicate that both hydroxyethyl starch formulations evaluated increase COP when used in the treatment of horses with low colloid oncotic pressure due to hypoproteinemia. Colloid supplementation improved COP approximately 20%, regardless of the formulation used. However, colloid treatment did not result in COP values within the equine normal range of 18-22 mmHg [7]. Venous pH was not affected by colloid administration. Therefore, it is presumed that type of colloid carrier fluid, normal saline versus lactate ringers solution, did not impact acid-base parameters in this setting.. Jones, P.A. and colleagues encountered similar results in measured COP after administration of 8-10ml/kg of 6% high molecular weight hydroxyethyl starch in 5 hypoproteinemic adult horses and 6 horses ≤1 year of age [8]. In that study, there was a significant increase in measured COP, a mean of 1.5 mmHg post-infusion (13%), that persisted for 24 hours and returned to baseline values at 48 ...
A quartz-crystal-microbalance with dissipation (QCM-D) can measure molecular mass adsorption as well as register adhesion of colloidal particles. However, analysis of the QCM-D output to quantitatively analyze adhesion of (bio)colloids to obtain viscoelastic bond properties is still a subject of debate. Here
article{6110940a-2755-4c1d-bd53-b19e12c96cdf, abstract = {This article highlights our recent achievements on the development and upgrade of new potential tumor-specific contrast agents for magnetic resonance imaging (MRI) based on gadolinium complexes and peptides, assemblied in amphiphilic supramolecular aggregates. The physico-chemical characterization of these aggregates provides novel and interesting opportunities to investigate surfactant aggregation properties, that may be exploited in several applications such as in medical diagnostics or in drug and gene delivery.}, author = {Vaccaro, Mauro and Mangiapia, Gaetano and Radulescu, Aurel and Schillén, Karin and DErrico, Gerardino and Morelli, Giancarlo and Paduano, Luigi}, issn = {1744-6848}, language = {eng}, number = {13}, pages = {2504--2512}, publisher = {Royal Society of Chemistry}, series = {Soft Matter}, title = {Colloidal particles composed of amphiphilic molecules binding gadolinium complexes and peptides as tumor-specific ...
Contact verified Colloidal Silica Manufacturers, Colloidal Silica suppliers, Colloidal Silica exporters wholesalers, silica sol casting producers, traders in India.
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Manuella Cerbelaud, Aleena Maria Laganapan, Tapio Ala-Nissila, Riccardo Ferrando, Arnaud Videcoq. Shear viscosity in hard-sphere and adhesive colloidal suspensions with reverse non-equilibrium molecular dynamics. Soft Matter, Royal Society of Chemistry, 2017, 13 (21), pp.3909 - 3917. ⟨10.1039/c7sm00441a⟩. ⟨hal-01529935⟩ ...
0141]By using each of lectins, i.e. ConA, RCA120, and WGA as proteins, five 100 μl of PBS-T (0.05%) solutions were prepared in Eppendorf tubes so that the protein is contained therein at 10 μM, 8 μM, 6 μM, 4 μM, and 2 μM concentrations. As the colloid solution of sugar-immobilized gold nanoparticles (hereinafter simply referred to as "colloid solution"), a colloid solution of maltose-immobilized gold nanoparticles, lactose-immobilized gold nanoparticles, and chitobiose-immobilized gold nanoparticles (absorbance of 0.3 mm at 525 nm) were used. 100 μl of the colloid solution of maltose-immobilized gold nanoparticles was added to the ConA-containing PBS-T (0.05%) solution. 100 μl of the colloid solution of lactose-immobilized gold nanoparticles was added to the RCA120-containing PBS-T (0.05%) solution. 100 μl of the colloid solution of chitobiose-immobilized gold nanoparticles was added to the WGA-containing PBS-T (0.05%) solution. In this manner, the mixture solutions of the colloid ...
BACKGROUND and PURPOSE: We have recently shown high-dose human serum albumin therapy to confer marked histological protection in experimental middle cerebral artery occlusion (MCAo). We have now used diffusion-weighted magnetic resonance imaging (DWI) in conjunction with morphological methods to expand our understanding of this therapeutic approach. METHODS: Physiologically controlled Sprague-Dawley rats received 2-hour MCAo by the modified intraluminal suture method. Treated rats received 25% human serum albumin solution (1% by body weight) immediately after the MCA was reopened. Vehicle-treated rats received saline. Computer-based image averaging was used to analyze DWI data obtained 24 hours after MCAo and light-microscopic histopathology obtained at 3 days. In a matched series, plasma osmolality and colloid oncotic pressure, as well as brain water content, were determined. RESULTS: Albumin therapy, which lowered the hematocrit on average by 37% and raised plasma colloid oncotic pressure by ...
Lyophilic colloids are liquid loving colloids (Lyo means solvent and philic means loving). Colloids are mixed with the suitable liquid, high force of attraction exists between colloidal particles and liquid.. ...
In this study, we have examined a crystallization effect of colloidal dispersion induced by the various elongational flows. Extremely strong electrostatic repulsion makes a crystal structure called colloid crystal. A colloid crystal has hundreds of nano-meters in grating scale and it reflects the visible light due to the Bragg diffraction. It has the potential to become different photonic devices such as an inexpensive photonic device and a planar laser source, but it requires the evolution of the process of making a single-crystal with external stimulus. The methods using flow operation described in this study are expected to the crystallization action of a colloidal dispersion. In the experiment, 2 types of the flow have been examined. The flows have a contraction or an expansion part between two parallel plates separated by 0.1 mm gap and it cause deformations of a contraction or an extension for the colloid. We have evaluated the crystallization effects by a spectroscopic observation of ...
Key questions remain unresolved regarding the advantages and limitations of colloids for fluid resuscitation despite extensive investigation. Elucidation of these questions has been slowed, in part, by uncertainty as to the optimal endpoints that should be monitored in assessing patient response to administered fluid. Colloids and crystalloids do not appear to differ notably in their effects on preload recruitable stroke volume or oxygen delivery. Limited evidence nevertheless suggests that colloids might promote greater oxygen consumption than crystalloids. It remains unclear, in any case, to what extent such physiological parameters might be related to clinically relevant outcomes such as morbidity and mortality. Recent randomized controlled trial results indicate that, at least in certain forms of fluid imbalance, albumin is effective in significantly reducing morbidity and mortality. Much further investigation is needed, however, to determine the effects of colloid administration on ...
A method was developed for the purpose of determining the size and shape of anisometric colloidal particles and flexible macromolecules. The experimental technique used for this determination is the measurement of the change in the intensity of the light scattered by anisometric colloidal particles (or macromolecules) when oriented (or deformed) by a velocity gradient. Improvements in the system will extend the present range of measurements to rigid colloidal particles whose longest dimension is less than 300 mu and to high molecular weight polymers. The apparatus has been successfully tested with suspensions of tobacco mosaic virus and the experimental results have been compared with the theory of Okano and Wada (J. Chem. Phys., 34: 405, 1961) for thin rod-like particles. Preliminary observations made with flexible macromolecules indicate that the effect of deformability of high molecular weight polymers, subjected to a velocity gradient, is quite small under the conditions of this study, as predicted
We present results from recent crystallization studies on marginal binary suspensions of colloidal particles. As small amounts of the second component are added, crystallization slows, and in some cases may cease altogether. The results support a growth mechanism whereby crystallization occurs in conjunction with a local fractionation process near the crystal-fluid interface, significantly altering the kinetics of crystallite nucleation and growth ...
We report a study of reversible adsorption of DNA-coated colloids on complementary functionalized oil droplets. We show that it is possible to control the surface coverage of oil droplets using colloidal particles by exploiting the fact that, during slow adsorption, compositional arrest takes place well before structural arrest occurs. As a consequence, we can prepare colloid-coated oil droplets with a "frozen" degree of loading but with fully ergodic colloidal dynamics on the droplets. We illustrate the equilibrium nature of the adsorbed colloidal phase by exploring the quasi-two-dimensional phase behavior of the adsorbed colloids under the influence of depletion interactions and present simulations of a simple model that illustrates the nature of the compositional arrest and the structural ergodicity. ...
A tandem-cartridge system was established for studying colloid formation and physical state distribution of trace polycyclic aromatic hydrocarbons (PAHS) in water. The effectiveness of the method for measuring the trace PAH colloids was demonstrated. With aqueous samples prepared by adding the PAH solutes with a small amount of organic solvent carrier, the potential of colloid formation increased with the hydrophobicity and concentration of the solute, but the incipient concentration for the colloid formation may be far lower than the aqueous solubility of the solute. After formation in water, the colloids showed remarkable stability at room temperature, and the stability was greatly reduced by elevated temperature and the presence of a small amount of inorganic electrolytes. The possible mechanism of destabilization of the colloids was discussed, and the mechanism might be of utility in providing insights into the physical state distribution of the solutes in various water samples. However, ...
Solid films with novel optical properties are produced from colloidal suspensions of cellulose crystallites; the colloidal suspensions are prepared by acid hydrolysis of crystalline cellulose under carefully controlled conditions; the solid materials possess a helicoidal arrangement of the constituent crystallites; by appropriate selection of conditions for preparation and treatment of the colloidal suspensions, solid films are produced that reflect circularly polarized visible light; the wavelength of the reflected light can be controlled to give colours across the visible spectrum from red to violet, and if necessary to infrared and ultraviolet wavelengths. The reflected iridescent colours arise from optical interference effects, and change with the viewing angle; this makes the materials ideally suited for optical authenticating devices, since no printing or photocopying technique can reproduce this effect; furthermore, they are easily distinguishable from other optical interference devices since
Various types of crystalloids (oxalate, uric acid calcium, and cystine) are present in urine, which are kept in solution by the presence of colloids (mucin and sulphuric acid) in urine by the process of absorption. There is imbalance in the crystalloid colloid ratio. i.e. increase in crystalloid and fall in colloid level leading to formation of renal stones (Hadimioglu, Saadawy, Saglam, Ertug, & Dinckan, 2008). Urinary stone are formed when colloid lose the solvent action or adhesive property. In ethylene glycol induced urolithic rats observed that an elevated level of urinary phosphorus are responsible for stone formation. Increased excretion of uric acid has been observed for stone formation. The predominance of uric acid crystals in calcium oxalate proteins are capable of binding to calcium oxalate and modulate its crystallization also play an important role in stone formation. Super saturation of urinary colloids results in precipitation as crystal initiation particle(Aksu, Demirci, & Ince, ...
Introduction: Cold crystalloids have been used for induction of therapeutic hypothermia after cardiac arrest but so far the effectiveness of cold colloids has not been evaluated. This prospective study investigates the cooling effect of rapid intravenous infusion of cold crystalloid compared to colloid in a porcine model of ventricular fibrillation (VF).. Methods: VF was electrically induced in twenty-two anesthetized domestic pigs (33 ± 2 kg). Defibrillation was attempted after 15 min CPR using the AutoPulse (Zoll Medical, USA) and artificial ventilation. After spontaneous circulation was restored, the animals were randomized to receive either 1500 mL of 1°C cold Voluven [6% hydroxyethyl starch 130/0.4 in 0.9% NaCl] within 25 min using a Zoll Power Infuser (group A; n = 9), or 1500 mL of 1°C cold normal saline (group B; n = 9), or no infusion (group C; n = 4). The animals were observed for 90 min following infusion. Cerebral, rectal, intramuscular, pulmonary artery, and subcutaneous fat body ...
The objective of this project is the preparation of novel porous nanocapsules. Spherical colloidal particles, such as melamine formaldehyde (MF), are coated with a mixture of a multilayer of diblock copolymers/micelles and polymer coated Au nanoparticles, via the so-called layer-by-layer approach (LbL). Diblock copolymers of PDMA-PDEA and PDEA-PMAA [where PDMA: poly(2-dimethylamino)ethyl-methacrylate, PDEA: poly(diethylamino)ethyl methacrylate & PMAA: poly methacrylic acid], as well as PDMA coated Au nanoparticles, are used to create polymeric micellar multilayers on MF particles. The core MF is dissolved, whereas parts of the outside layer- the corona - are cross-linked with BIEE and parts of it are etched away. By using the film on the colloidal particle as a mask for selective etching, the production of novel porous hollow shells can be investigated. The morphology is studied experimentally via the use of instrumentation such as AFM, DLS, TEM, SEM, Nanosizer, -potential and UV-VIS. This new type of
Three-dimensional photonic crystals of ellipsoidal colloidal particles are prepared by direct convective self-assembly from suspension with the aid of a magnet. The magnetic field provides the orientational order, which is additionally needed for these colloidal particles with symmetry lower than spherical. The positional order is provided by the convection, just as for spherical colloids ...
Introduction: Sensitive detection of ruptured plaque, the sine qua non of stroke and myocardial infarction, remains an unmet challenge. Previous gadolinium-peptide conjugates lacked clinical efficacy and posed a risk for Nephrogenic Systemic Fibrosis.. Objective: The objective was to develop and characterize the first molecular imaging (MI) agent for fibrin based on copper-based nanocolloids.. Methods: Nanocolloids of copper (Cu) (NanoQ) were synthesized (Dav=217 nm, ζ=−13mV) and characterized for MI of thrombus. MR properties of NanoQ in suspension were defined at 3.0 T at 25C followed by MR imaging of fibrin clots with NanoQ or a control (n=3/group) using fibrin-specific antibodies (NIB5F3). In vivo pharmacokinetics and 24 hour biodistribution, and bioelimination of NanoQ was evaluated in rodents.. Results: The particulate relaxivity of the NanoQ was high, r1=66,000±2200 (s•mmol [NanoQ])−1, while the ionic r1 relaxivitiy (4.3±0.1 (s•mmol [Cu])−1) was similar to Gd-DTPA. The ...
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The German "Kolloid-Gesellschaft", one of the oldest scientific associations, held its biennial general meeting at TUM. "Colloids" are mixtures in which insoluble microscopic particles of one substance are suspended throughout another substance. Apart from fundamental research, colloids play an important role in pharmacy as well as in nutrition science and the cosmetics industry. As an example, milk is a complex mixture of different colloids and other substances in water. This years colloid conference had the topic "multi-responsive systems" - an interdisciplinary research field that gets a lot of attention here in Garching, at the departments for physics and chemistry as well as at the Heinz Maier-Leibnitz Zentrum. The conference and workshop were organized by Christine M. Papadakis (TUM), Peter Müller-Buschbaum (TUM) and Dominik Wöll (RWTH Aachen). Responsive ("smart") materials react to an outer stimulus (e.g. a small change of temperature or of the pH value) with a strong change of their ...
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A team from the physics department of the Johannes Gutenberg University, Mainz, has investigated nucleation processes and interfacial properties of colloidal crystals. Nucleation is omnipresent in our daily life and describes events as diverse as the formation of rain in clouds, the crystallization of proteins or the growth of nano-particles. The studies undertaken using supercomputers Hazel Hen and Hornet of HLRS Stuttgart contribute towards a more fundamental understanding of these processes and the underlying theoretical foundation.
A depletion force is an effective attractive force that arises between large colloidal particles that are suspended in a dilute solution of depletants, which are smaller solutes that are preferentially excluded from the vicinity of the large particles. One of the earliest reports of depletion forces that lead to particle coagulation is that of Bondy, who observed the separation or creaming of rubber latex upon addition of polymer depletant molecules (sodium alginate) to solution. More generally, depletants can include polymers, micelles, osmolytes, ink, mud, or paint dispersed in a continuous phase. Depletion forces are often regarded as entropic forces, as was first explained by the established Asakura-Oosawa model. In this theory the depletion force arises from an increase in osmotic pressure of the surrounding solution when colloidal particles get close enough such that the excluded cosolutes (depletants) cannot fit in between them. Because the particles were considered as hard-core ...
These studies show for the first time that the synthesis of two distinct phase-separated copolymers within one colloidal particle, i.e., poly(methyl methacrylate) (PMMA)/n-butylacrylate (nBA) and poly (nBA)/pentafluorostyrene (p-PFS) phases, results in unique acorn-shaped morphologies and are capable of coalescence. Spectroscopic and morphological analysis combined with contact angle measurements as well as thermodynamic modeling reveal that in an effort to create stable heterogeneous two-phase particle morphologies it is essential to provide desirable interfacial energetic conditions during polymerization and to utilise monomers that have a similar glass transition temperature (T(g)). Such colloidal particles are stable and are able to self-assemble during coalescence, depending upon the surface energy of a substrate. When a particle monolayer coalesces on a high surface tension substrate, the p-PFS phase expresses itself near the film-air interface, whereas for low surface energy substrates, the p-PFS
It is estimated that there are 5x1030 microorganisms on Earth and that approximately 50% live in unconsolidated sediment on the terrestrial subsurface. Subsurface disturbances caused by the constant search for natural resources and our dependence on groundwater make the abundance and diversity of these organisms a global concern. It is vital to many environmental fields, including bioremediation, water purification, and contaminant transport, that we understand how microorganisms and other colloidal particles attach to and detach from natural sediments and ultimately how they travel through porous media. Sticking efficiency (alpha) is a major component of most particle transport theories. It is defined as the ratio of particles that adhere to a collector surface compared to the total number of particles that collide with that surface. In this study, the Interaction Force Boundary Layer (IFBL) model was used to determine the sticking efficiencies of inorganic colloidal particles and Enterococcus ...
substrate may help our understanding of biological processes involving cell membranes, such as multivalent adhesion. To do this, we observe the three-dimensional motion of colloidal particles using a custom made total internal reflection (TIR) microscope. We measure the position of the particles using scattered light from an evanescent wave. The evanescent wave is the result of total internal reflection of a laser from the coverslip-water interface. Since the intensity of the wave decreases exponentially, the amount of scattered light from the particles is related to their vertical position. We then use a suite of custom made software routines to calculate the mean squared displacement, pair-interaction potential and kinetics of binding. From this data, we hope to characterize how colloidal particles interact via DNA hybridization with a solid substrate, and ultimately understand something about the key physical determinants of avidity and specificity in multivalent binding ...
A composition which contains stabilized conjugates composed of colloidal particles and biomolecules is obtained by adding a detergent to a solution containing biomolecules before or/and during treatment of colloidal particles with this solution.
Principal Investigator:YOSHINAGA Kohji, Project Period (FY):1996 - 1997, Research Category:Grant-in-Aid for Scientific Research (C), Section:一般, Research Field:機能・物性・材料
We now know that the colloid osmotic pressure in the intravascular space will only oppose the outward movement of water, and increasing the colloid osmotic pressure by synthetic colloids will not reverse the flow and draw fluid from the interstitial to the intravascular space. ( Multiple trials , starting with the SAFE trial have proved the futility of using synthetic colloids !) What they end up doing is, probably drawing water from the glycocalyx in the intravascular space itself and dehydrating and then disintegrating this vital layer. As a result you will find a transient improvement in blood pressures, but afterwards, a lot of this fluid will track into the extravascular space. Any hyperosmolar solution can do this including Soda Bicarb….we have all seen the very transient increase in blood pressure after bicarb which has always been incorrectly attributed to reversal of acidosis…bah ...
Nanosized organic colloidal particles can fluoresce in a wide range of wavelengths in a manner reminiscent of inorganic quantum dots by controlling the aggregation of dye molecules inside the colloids, according to scientists at the Naval Research Laboratory, in Washington, D.C. (ACS Nano, DOI: 10.1021/nn9007498). These novel fluorescent nanoparticles and the wealth of ...
CONCLUSION Our results showed that when fluid management was guided by detailed haemodynamic assessment, more crystalloid than colloid was needed to maintain haemodynamic stability, but there was no difference between the effects of crystalloids and colloids on the microcirculation. TRIAL REGISTRATION ClinicalTrials.gov NCT03288051....
Using a colloid on a cable is novel. Wikipedia reads, A Colloid or colloidal dispersion is a type of homogenous mixture. A colloid consists of two separate phases: a dispersed phase and a continuous phase. In a colloid, the dispersed phase is made of tiny particles or droplets that are distributed evenly throughout the continuous phase. The size of the dispersed phase particles are between 1nm and 1000nm in at least one dimension. Nanotec states that the strands of the OFC conductors are scratched on the surface when drawn from thicker wire. Where the strands touch each other with their rough surfaces, noise will occur. The colloid will adhere to the scratches and thus smooth the conductor surface so less noise is created. [This conceptually mirrors the gold-infused silver technology used by Siltech and Crystal Cable where the rationale for the gold is a similar filling in of surface imperfections - Ed ...
Hedrodynamic interactions (HI) play an important role whenever two or more particles move in a viscous fluid. Due to their long-range nature, they govern the dynamics of colloidal suspensions, e.g. during self- and collective diffusion, sedimentation, and aggregation processes. Here we demonstrate that HI leads to a novel motional behavior of colloidal particles driven by a constant tangential force along a toroidal trap. Owing to HI, we observe an interesting limit cycle, which has been recently predicted by Reichert and Stark. In addition, we demonstrate how the collective motion of interacting particle changes when a sawtooth potential is added to the constant driving force. We demonstrate that in this case the particles exhibit an unexpected caterpillar-like motion, which facilitates the surmounting of potential barriers. ...
Colloids are mixtures of molecules well-studied in material science that are not well-understood mathematically. Physicists model colloids as a system of two types of tiles (type A and type B) embedded on a region of the plane, where no two tiles can overlap. It is conjectured that at high density, the type A tiles tend to separate out and form large "clusters". To verify this conjecture, we need methods for counting these configurations directly or efficient algorithms for sampling. Local sampling algorithms are known to be inefficient. However, we provide the first rigorous analysis of a global "DK Algorithm" introduced by Dress and Krauth. We also examine the clustering effect directly via a combinatorial argument. We prove for a certain class of colloid models that at high density the configurations are likely to exhibit clustering, whereas at low density the tiles are all well-distributed. Joint work with Sarah Miracle and Dana Randall ...
Looking for colloid substance? Find out information about colloid substance. in philosophy, term used to denote the changeless substratum presumed in some philosophies to be present in all being. Aristotle defined substance as that... Explanation of colloid substance
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We demonstrate that colloidal particles with surface roughness exhibit hindered rotational diffusion in quiescent dense suspensions. This is accomplished by the use of confocal microscopy and particle tracking to follow the translational and rotational dynamics of smooth and rough colloids suspended in a ref
A hydrocolloid can simply be defined as a substance that forms a gel in contact with water. Such substances include both polysaccharides and proteins which are capable of one or more of the following: thickening and gelling aqueous solutions, stabilizing foams, emulsions and dispersions and preventing crystallization of saturated water or sugar solutions. In the recent years there has been a tremendous interest in molecular gastronomy. Part of this interest has been directed towards the "new" hydrocolloids. The term "new" includes hydrocolloids such as xanthan which is a result of relatively recent research, but also hydrocolloids such as agar which has been unknown in western cooking, but used in Asia for decades. One fortunate consequence of the increased interest in molecular gastronomy and hydrocolloids is that hydrocolloids that were previously only available to the food industry have become available in small quantities at a reasonable price. A less fortunate consequence however is that ...
A hydrocolloid can simply be defined as a substance that forms a gel in contact with water. Such substances include both polysaccharides and proteins which are capable of one or more of the following: thickening and gelling aqueous solutions, stabilizing foams, emulsions and dispersions and preventing crystallization of saturated water or sugar solutions. In the recent years there has been a tremendous interest in molecular gastronomy. Part of this interest has been directed towards the "new" hydrocolloids. The term "new" includes hydrocolloids such as gellan and xanthan which are a result of relatively recent research, but also hydrocolloids such as agar which has been unknown in western cooking, but used in Asia for decades. One fortunate consequence of the increased interest in molecular gastronomy and hydrocolloids is that hydrocolloids that were previously only available to the food industry have become available in small quantities at a reasonable price. A less fortunate consequence ...
We review recent work on fluid-solid and solid-solid phase transitions in soft matter systems such as colloidal suspensions and star polymer solutions. Starting from a given interparticle pair potential we predict the corresponding phase diagrams using computer simulations, cell theory, and density functional theory. When possible, the results are compared with experimental data. In particular, we discuss the following aspects: a cascade of freezing transitions for confined colloids, stable one-component quasicrystals for charged colloids, reentrant melting and anisotropic solid phases for star polymer solutions and reentrant nematic ordering for suspensions of the tobacco-mosaic virus ...
Blood has the characteristics of both a colloid and a suspension and is therefore a colloidal suspension. Since blood has characteristics of all three mediums, its true nature is hard to...
L1210 leukemic cells were treated with either vitamin A alcohol or neuraminidase. Ascites cells in vivo and cultures of an L1210 cell line in vitro were used. In untreated cells stained with ruthenium red, the glycoprotein surface coat appears as a thick, uninterrupted, electron-dense band. Positive colloidal iron staining results in deposition of particles in similar continuous fashion. No gaps were detected with both stains. After negative colloidal staining, no particle deposition was seen on the cell surface.. Treatment with vitamin A resulted in the following changes. Ruthenium red staining showed a thinner, discontinuous surface coat. Positive colloidal iron binding was markedly decreased, and particle deposition occurred in sparse clusters separated by extensive gaps. Negative colloidal particle binding was enhanced, with the appearance of patchy clusters separated by gaps.. These results indicate a loss of surface coat material, reduction in negative cell surface charge, and exposure of ...
Nanoscale or colloidal particles are important in many realms of science and technology. They can dramatically change the properties of materials, imparting solid-like behaviour to a wide variety of complex fluids(1,2). This behaviour arises when particles aggregate to form mesoscopic clusters and networks. The essential component leading to aggregation is an interparticle attraction, which can be generated by many physical and chemical mechanisms. In the limit of irreversible aggregation, infinitely strong interparticle bonds lead to diffusion-limited cluster aggregation(3) (DLCA). This is understood as a purely kinetic phenomenon that can form solid-like gels at arbitrarily low particle volume fraction(4,5). Far more important technologically are systems with weaker attractions, where gel formation requires higher volume fractions. Numerous scenarios for gelation have been proposed, including DLCA(6), kinetic or dynamic arrest(4,7-10), phase separation(5,6,11-16), percolation(4,12,17,18) and ...
Using Brownian dynamics simulations, density functional theory, and analytical perturbation theory we study the collapse of a patch of interfacially trapped, micrometer-sized colloidal particles, driven by long-ranged capillary attraction. This attraction is formally analogous to two-dimensional (2D) screened Newtonian gravity with the capillary length ˆλ as the screening length. Whereas the limit ˆλ→∞ corresponds to the global collapse of a self-gravitating fluid, for finite ˆλ we predict theoretically and observe in simulations a ringlike density peak at the outer rim of a disclike patch, moving as an inbound shock wave. Possible experimental realizations are discussed. ...
The particles in a colloid are larger than those found in a solution. The sizes of the particles in a colloid range from 10^-8 to 10^-6 meters, while a solution is made up of ions, atoms or...
series:Progress in Colloid and Polymer Science. This volume includes 35 contributions to the 24th Conference of the European Colloid and Interface Society which took place in September 2010 in Prague. The contributions from leading scientists cover a broad spectrum of the following topics: • Self-assembling, Stimuli-responsive and Hierarchically Organized Systems • Colloid, Polymer and Polyelectrolyte Solutions; Concentrated Systems and …. ...
Colloids are characterized by Tyndell effect - light is scattered when passing a colloid due to the similar dimensions of the light wavelength and the sizes of the colloidal dispersed particles ...
Abstract: The trajectories of colloidal particles driven through a periodic potential energy landscape can become kinetically locked in to directions dictated by the landscapes symmetries. When the landscape is realized with forces exerted by a structured light field, the path a given particle follows has been predicted to depend exquisitely sensitively on such properties as the particles size and refractive index These predictions, however, have not been tested experimentally. Here, we describe measurements of colloidal silica spheres transport through arrays of holographic optical traps that use holographic video microscopy to track individual spheres motions in three dimensions and simultaneously to measure each spheres radius and refractive index with part-per-thousand resolution. These measurements confirm previously untested predictions for the threshold of kinetically locked-in transport, and demonstrate the ability of optical fractionation to sort colloidal spheres with ...
Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.
Liquid suspension systems are the basic ingredients of paints, detergents, biological cells, and countless other systems of scientific and technological importance. This book presents the fundamental physical and chemical concepts necessary to the understanding of these systems and of colloid science in general. New ideas are introduced carefully and formulae are developed in full, with exercises to help the reader throughout. The frequent references to the many applications of colloid science will be especially helpful to beginning research scientists and people in industry, medicine and agriculture who often find their training in this area inadequate. Integrating developments from the time of colloid sciences infancy 40 years ago to its present state as a rigorous discipline, this intelligently assembled work elucidates a remarkable range of concepts, techniques, and behaviors.
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Critically ill patients with trauma, burns, surgery or sepsis are often given intravenous fluids to expand intravascular volume. When it comes to selecting the resuscitation fluid, one of the choices is between using a colloid or a crystalloid solution. This choice has considerable cost implications, because volume replacement with colloids is much more expensive than…
This compact textbook introduces Brownian motion of colloidal particles, illustrating the basic physical and chemical principles and applications in a clear and didactic way. It is enriched with exercises of variable level of difficulty and addressing different settings.
The motion of colloidal particles on a periodic optical potential energy landscape in the presence of an external driving force may result in particle separation. In contrast to recent methods of holographic or interferometric generation of such landscapes, we use an acousto-optic deflector to create two-dimensional landscapes. We present what is believed to be the first experimental realization of fractionation with simultaneous sorting of four different sizes of colloidal microparticle into laterally separated parallel laminar streams.. © 2007 Optical Society of America. Full Article , PDF Article ...
Colloidal gold particles, 25 to 55 A in diameter, which had been coated with polyvinylpyrrolidone, were microinjected into the ground cytoplasm of amebas (Chaos chaos). At time intervals of 1 minute, 2 minutes, 10 minutes, and 24 hours after injection the cells were fixed for electron microscopy. After 24 hours, gold particles were found in both the nuclei and the ground cytoplasm, the concentration being higher in the nuclei. Colloidal particles were also present in the nuclei after 10 minutes, but at this time interval the concentration did not appear to be greater than that in the ground cytoplasm. One and 2 minutes after injection, the gold particles were located almost exclusively in the ground cytoplasm; however, individual particles were often found within the annuli of the nuclear envelope, and were located specifically in the centers of these structures. The results suggest that at least some of the gold particles which enter the nuclei pass through the annuli, and that passage through ...
Today in notes we started with discussing solutions, suspensions and colloids. Solutions are homogeneous well-mixed mixtures that cannot be separated easily (a change in phase) - like kool-aid or saltwater. Suspensions will settle and separate over time because of gravity or because of differences in density - like oil and water or orange juice with pulp. Suspensions are heterogeneous. Colloids are weird. Colloids should settle and separate over time but because the particles are super-tiny just running into each other (Brownian motion) keeps them in suspension. Colloids can also represent two different phases so if it seems weird like you cannot classify it as just one phase - like fog, jello, whipped cream - its a colloid ...
New levels of collaboration between researchers in food science, pharmacy and chemistry have been pioneered at the University of Huddersfield. The three-man team of scientists behind the development have launched a conference that is set to become a regular event around the UK, and have co-edited a special edition of the key academic journal in their field called Food Hydrocolloids.
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IV Fluids: Lesson 2 - Crystalloids and Colloids - lesson plan ideas from Spiral. Tagged under: iv fluids,intravenous fluids,Intravenous Therapy (Medical Treatment),colloids,crystalloids,albumin,ffp,d5W,d10W,normal saline,ns,lr,lactated ringers,lactated ringer,hartmann,dextan,hetastarch,hespan
There is no objective evidence of how long intravenous solutions remain inside venous blood vessels after they have been administered, therefore there is no definite guideline of how to administer them in the preoperative setting. Besides, obese patients represent a particular group of subjects as they theoretically with-hold a constant inflammatory response and that would modify the way solutions behave intravenously, that is how long they remain inside.. Having said this, we wish to describe the way colloid solutions behave in this group of patients by taking serial blood samples in 12 obese patients after a colloid infusion, to calculate plasma dilution curves based on hemoglobin dilution and therefore infer the time it remains intravascularly.. All this in the hope this information will help, in the near future, to establish a more objective way to use these solutions and avoid possible complications due to over-administration. ...
There is no objective evidence of how long intravenous solutions remain inside venous blood vessels after they have been administered, therefore there is no definite guideline of how to administer them in the preoperative setting. Besides, obese patients represent a particular group of subjects as they theoretically with-hold a constant inflammatory response and that would modify the way solutions behave intravenously, that is how long they remain inside.. Having said this, we wish to describe the way colloid solutions behave in this group of patients by taking serial blood samples in 12 obese patients after a colloid infusion, to calculate plasma dilution curves based on hemoglobin dilution and therefore infer the time it remains intravascularly.. All this in the hope this information will help, in the near future, to establish a more objective way to use these solutions and avoid possible complications due to over-administration. ...
Buy, download and read Useful Quasicrystals ebook online in PDF format for iPhone, iPad, Android, Computer and Mobile readers. Author: Jean-Marie Dubois. ISBN: 9789814496988. Publisher: World Scientific Publishing Company. The aim of this book is to acquaint the reader with what the author regards as the most basic characteristics of quasicrystals - structure, formation and stability, properties - in relationship with t
Self-assembly of colloidal particles produces structural materials for a broad range of applications such as metamaterials (1), solar cells (2), photonic sensors (3), and drug delivery (4). In most of these applications, the assembly of colloids results in structural colors that are more resistant to chemical washing or photobleaching than pigment-based colors (5, 6). The current state-of-the-art structural colors from colloidal assemblies are mostly constrained to film geometries using evaporation-induced assembly (7), electrophoretic deposition (8), and spray coating (9). These films are difficult to apply as "pigment-like" colorants that can be directly added to other materials such as paints or textiles. Furthermore, the interference-based structural colors on flat substrates are mostly iridescent, limiting their use in wide-angle display or accurate sensing applications. Recently, a simple approach involving self-assembly of colloidal nanoparticles in emulsion droplets was used to fabricate ...
While Volume I stands as an essentially complete advanced textbook of colloidal science, Volume II extends the material to include important new areas, and develops some of the topics in much greater depth. An introductory chapter on the theory of liquids describes the concept of correlation functions and the use of Fourier transforms to analyse the scattering of light and neutrons by colloidal systems. Absorption is given detailed coverage and a chapter on electrokinetics introduces a new approach to time-dependent processes in the double layer. The principles of double layer theory are also used to review the behavior of thin films and emulsions. A final chapter on the rheology of colloidal suspensions calls on many of the concepts developed earlier to bring some cohesion to this important and rapidly developing field.
Two major themes of the Discussion Meeting, arising particularly from the papers of Pouliquen & Forterre (in press), Gardel et al. (in press) and Moller et al. (in press), were how colloidal systems and granulars differed, especially with regard to the importance of dilation in granular response, and the role and use of system volume fraction Φ. In this contribution, I wish to consider further the role of the volume fraction and how it is discussed and used, with particular relevance to the dilation response of concentrated colloidal suspensions and how this compares with dilation in dry and wet granulars.. Considering measurements/control of Φ, Pusey et al. (in press) pointed out that experimental volume fractions quoted for colloidal systems were unavoidably prone to imprecision; care must be taken to avoid ascribing particular numerical values greater importance than warranted. This is particularly important near the apparent colloidal glass transition, where rheological and dynamic ...
ACKNOWLEDGMENTS. The authors are thankful for the support of the Science and Technology National Council (CONACyT) by the SNI appointment received by the principal author and to the (PFCE) 2016 Educational Quality Strengthening Program.. REFERENCES CITED. Abou-Elela, S. I., Nasr, F. A., Ibrahim, H. S., Badr, N. M., and Askalany, A. R. M. (2008). "Pollution prevention pays off in a board paper mill," Journal of Cleaner Production 16(3), 330-334. DOI: 10.1016/j.jclepro.2006.07.045. Ackermann, C., Gottsching, L., Pakarinen, H. (2000). "Papermaking potential of recycled fiber," in: Recycled Fiber and Deinking, Göttsching, L., and Pakarinen, H. (eds.), Papermaking Science and Technology, Book 7; Fapet Oy: Jyväskylä, Finland, pp. 359-439.. Alince, B., and Van de Ven, T. G. M. (1993). "Kinetics of colloidal particle deposition on pulp fibers 2. Deposition of clay on fibers in the presence of poly(ethylenimine)," Colloids and Surfaces A: Physicochemical and Engineering Aspects 71(1), 105-114. DOI: ...
Colloidal particles driven by a constant tangential force along a toroidal laser trap show a characteristic limit cycle. A two-particle cluster catches up with a single particle because the hydrodynamic drag on the cluster is smaller compared to an isolated colloid. Finally, the particles from the surrounding fuid flow, it pushes the front most particle ahead so that the two fron most particles detach from the cluster and the cycle begins again. ...
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Deionized dilute charged colloidal systems exhibit gas-liquid and gas-solid coexistence and re-entrant transitions depending on suspensions parameters such as volume fraction, charge density and ionic strength. These observations constitute evidence for the existence of long-range attraction between like-charged colloids. Monte Carlo (MC) simulations using Sogami-Ise pair-potential, which has a long-range attractive term, could explain the above mentioned experimental observations. MC simulations, which correspond to zero gravity conditions, revealed coexistence of liquid-like droplet with rare phase (gas-like) and voids coexisting with dense (solid-like) phase clusters. These predictions will be verified by the project of microgravity experiments in space and the outcome is expected to provide evidence for the existence of long-range attraction between like charged colloids ...
We present a numerical study on the phase diagram for a simple model of Janus colloids, including ordered and disordered structures. Using a range of techniques, we generate a set of crystal structures and investigate their relative stability field in the pressure-temperature and temperature-density planes by means of free-energy calculations ... read more and thermodynamic integration schemes. We find that despite the Janus colloids simple architecture, they form stable crystal structures with complicated bond-topologies on an underlying face-centered-cubic or hexagonal-close-packed lattice. In addition, we find a phase consisting of wrinkled bilayer sheets, competing with both the fluid and the crystal phases. We detect a metastable gas-liquid coexistence which displays a micellization-driven re-entrant behavior. show less ...
Fishpond Australia, Food Colloids: Interactions, Microstructure and Processing (Special Publications) by Allen E Foegeding (Contributions ) Eric Dickinson (Edited ). Buy Books online: Food Colloids: Interactions, Microstructure and Processing (Special Publications), 2005, ISBN 0854046380, Allen E. Foegeding (Contributions by) Eric Dickinson (Edited by)
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Page Consists Comprehensive Information on Colloids, their Types, Applications, Properties, Examples and even Images, News & Discussion Results on Colloid
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects Colloids Surf. A Publisher: (2674) Elsevier (Alias: Elsevier, Elsevier BV, Elsevier Ltd, Elsevier Inc., Elsevier Masson, Elsevier Australia, Elsevier Ltd., Elsevier BV * North-Holland, Elsevier Doyma, Elsevier Editora Ltda, Elsevier Espana, Elsevier France * Editions Scientifiques et Medicales, Elsevier GmbH, Elsevier GmbH - Urban und Fischer, Elsevier Health Sciences, Elsevier Ireland Ltd., Elsevier Japan KK, Elsevier Oncology, Elsevier Science Publishers Ltd., Elsevier S.A., Pergamon Press) ISSN (P) 0927-7757 ISSN (E) 1873-4359 ISSN (L) 0927-7757 There are no additional documents for this Publisher/Journal ...
Colloid: | | ||| | |Milk| is an |emulsified| colloid of liquid |butterfat... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled.
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Understanding how particles pack on curved surfaces is important for applications in medicine and the food industry in which colloidal particles are embedded, for example, on oil-water interfaces in emulsions. Packing spherical particles on a curved interface is bound to result in a configuration with defects. On a flat surface, particles tend to pack in an orderly hexagonal lattice. However, the presence of curvature makes this type of configuration impossible to obtain, and results in particles having more or fewer than six neighbors. These regions which deviate from a hexagonal lattice are referred to as defects.. Pictured here are configurations of spherical particles packed on ellipsoidal surfaces. Red particles have six neighboring particles, and defects are shown as blue particles which have five neighbors, green particles which have seven neighbors, and occasionally yellow particles which have eight neighbors. The black lines indicate the axis about which the ellipsoidal surfaces are ...
The selectivity and range of energies offered by specific biological interactions serve as valuable tools for engineering the assembly of colloidal particles into novel materials. In this investigation, high affinity biological interactions between biotin-coated "A" particles (R-A = 0.475 mum) and streptavidin-coated "B" particles (R-B = 2.75 mum) drive the self-assembly of a series of binary colloidal structures, from colloidal micelles (a large B particle coated by smaller A particles) to elongated chain microstructures (alternating A and B particles), as the relative number of small (A) to large (B) particles (2 less than or equal to N-A/N-B less than or equal to 200) is decreased at a low total volume fraction (10(-4) less than or equal to phi(T) less than or equal to 10(-3)). At a significantly higher total volume fraction (phi(T) greater than or equal to 10(-1)) and a low number ratio (N-A/N-B = 2), the rheological behavior of volume-filling particle networks connected by ...
Disclosed are an optical flow particle apparatus and method for conducting a particle light scatter-based immunoassay for simultaneously measuring the presence or amount of one or more analytes in a fluid sample which involves the use of a reagent set for each analyte including first binding molecule-coated monodisperse microspheres and second binding molecule-coated colloidal particles in which at least one of the first or second binding molecules specifically binds a respective one of the analytes. In the case where more than one analytes are detected, each monodisperse microperse microsphere of a particular reagent set has a light scatter signal resolvable from that of microspheres of any other reagent set. Changes determined in the distributions of the measured light scatter signals for individual microspheres of each of the particular reagent sets are indicative of the presence or amount of the respective analyte(s) in the sample.
Scientists from Indian Institute of Science (IISc.), Bengaluru develop a new technique to trap micro particles using the surface features of glass which could help scientist study collective phenomenon and properties of colloidal particles.
dialysis definition: The split of smaller particles from bigger particles or of dissolved substances from colloidal particles in a solution by selective diffusion through a semipermeable membrane.; Hemodialysis.;…
dispersoid definition: a colloidal system, as an emulsion, in which the colloidal particles are quite small and well suspended in the disperse mediumOrigin of dispersoidfrom eastern; English disperse (adj.), dispersed (ult. from Classical Latin dispers...
Ceramic Foam Filter Iceland consists of many uniform micropores. When the fluid passes through these small holes, suspended substances, colloidal particles and macromolecular organic matter are trapped on the surface of the filter medium. The fluid generates various physical effects through the micropore channels, and realizes.... ...
Ceramic Foam Filter Iceland consists of many uniform micropores. When the fluid passes through these small holes, suspended substances, colloidal particles and macromolecular organic matter are trapped on the surface of the filter medium. The fluid generates various physical effects through the micropore channels, and realizes.... ...
Definition of polydisperse in US English - Existing in the form of or containing colloidal particles having a range of sizes; especially designating macromolecular
The structural relationships between intramembranous particles (IMPs) and surface carbohydrates has been studied in uterine epithelial cells with a colloidal iron hydroxide (CIH) technique. To...
First, the significant expense and theoretic risks of albumin and other colloid solutions dictate that it is incumbent on the users and manufacturers of colloid products to demonstrate superiority to crystalloid. Simply demonstrating a lack of an increase in mortality falls well short of endorsement of broad usage and fails to justify cost and potential risks to patients. The meta-analysis by Wilkes and Navickis contributes to a substantial body of evidence that fails to demonstrate indications for colloid ...
A colloidal dispersion consists of small particles called colloids, typically tens of nanometers to a few micrometers in size, suspended in a solvent. Due to collisions with the much smaller particles in the solvent, colloids perform Brownian motion: randomly directed movements that cause the particles to diffuse through the system. ... read more In principle, this motion allow the system of particles to explore all configurations available to them, sampling all of phase space according to the Boltzmann distribution. Analogous to molecular and atomic systems, colloidal systems can form disordered gas and liquid phases, as well as more ordered phases such as crystals, liquid crystals, or finite-sized aggregates. Since the particles form these phases based purely on their interactions and the Brownian motion that results from thermal fluctuations in their solvent, the process of forming these ordered structures is called self-assembly. In this thesis, we study the self-assembly of a variety of ...
A light-driven micromanipulation system with real-time user-feedback control is used to simultaneously trap colloidal suspensions enabling a unique interactive sorting capability and arbitrary patterning of microscopic particles. The technique is based on a straightforward phase-to-intensity conversion generating multiple beam patterns for manipulation of particles in the observation plane of a microscope. Encoding of phase patterns in a spatial light modulator, which is directly controlled by a computer, allows for dynamic reconfiguration of the trapping patterns, where independent control of the position, size, shape and intensity of each beam is possible. Efficient sorting of microsphere mixtures of distinct sizes and colors using multiple optical traps is demonstrated.. ©2002 Optical Society of America. Full Article , PDF Article ...
If youre thinking of the same hot drink I am, that is not a solution. Its a colloidal suspension. The finely ground particles remain dispersed through the water mainly due to Brownian motion. If you let it sit, though, youll end up with the larger, heavier particles settling to the bottom in a brownish-blask sludge.. Select as Best AnswerUndo Best Answer ...
Looking for online definition of colloid osmotic pressure in the Medical Dictionary? colloid osmotic pressure explanation free. What is colloid osmotic pressure? Meaning of colloid osmotic pressure medical term. What does colloid osmotic pressure mean?
In Sweden and in many other countries, a bentonite barrier will be used in the repository for spent nuclear fuel. In the event of canister failure, colloidal diffusion is a potential, but scarcely studied mechanism of radionuclide migration through the bentonite barrier. Column and in situ experiments are vital in understanding colloid diffusion and in providing information about the microstructure of compacted bentonite and identifying cut-off limits for colloid filtration. This study examined diffusion of negatively charged 2-, 5-, and 15-nm gold colloids in 4-month diffusion experiments using MX-80 Wyoming bentonite compacted to dry densities of 0.6-2.0 g/cm3. Breakthrough of gold colloids was not observed in any of the three diffusion experiments. In a gold-concentration profile analysis, colloid diffusion was only observed for the smallest gold colloids at the lowest dry density used (estimated apparent diffusivity Da ...
The competitive adsorption of toluene and n-alkanes at binary solution/silica interfaces was studied at room temperature using IR-visible sum frequency generation vibrational spectroscopy. The Surface coverage of toluene for toluene-pentane, toluene-heptane, and toluene-tetradecane mixtures was measured over the complete mole fraction range from 0 to 1. The competitive adsorption process was reversible, and the toluene coverage only depended oil the bulk mole fraction, not on the history of the system. The estimated molar adsorption free energy of toluene is 3.4 +/- 0.3, 1.8 +/- 0.3, and 0.84 +/- 0.3 kJ/mol higher than pentane, heptane, and tetradecane, respectively. Overall, toluene competes favorably on silica, and the molar adsorption free energy of alkanes increases as the chain length increases. It is consistent with the observed SFG spectra, indicating that the alkanes lie flat on the silica surface.. ...
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Therapeutic and subtherapeutic use of veterinary drugs has increased the risk of residue contamination in animal food products. Antibiotics such as tetracycline are used for mastitis treatment of lactating cows. Milk expressed from treated cows before the withdrawal period has elapsed may contain tetracycline residue. This study developed a simple surface-enhanced Raman spectroscopic (SERS) method for on-site screening of tetracycline residue in milk and water. Six batches of silver colloid nanoparticles were prepared for surface enhancement measurement. Milk-tetracycline and water-tetracycline solutions were prepared at seven concentration levels (1000, 500, 100, 10, 1, 0.1, and 0.01 ppm) and spiked with silver colloid nanoparticles. A 785 nm Raman spectroscopic system was used for spectral measurement. Tetracycline vibrational modes were observed at 1285, 1317 and 1632 cm−1 in water-tetracycline solutions and 1322 and 1621 cm−1 (shifted from 1317 and 1632 cm−1, respectively) in milk-tetracycline
Anyhoo, heres one product Ive had stashed in my purse the last week, Qsilica Paw Paw Rescue Ointment. Its a bit different when compared to other paw paw ointments, in that the fermented fruit is combined with colloidal silica. According to Wikipedia "colloidal silicas are suspensions of fine amorphous, nonporous, and typically spherical silica particles in a liquid phase." Okay then! Other ingredients include sweet almond oil (first ingredient listed and the base of the ointment), sunflower seed oil, white beeswax, castor oil, jojoba oil, macadamia seed oil, shea butter, grapefruit seed extract, oil oil, calendula and glycerin. Thats a whole heaping serve of oils! Its also petrochemical free to better aid moisture absorption. ...
POLYMER FUNCTIONALIZED SINGLE-WALLED CARBON NANOTUBE COMPOSITES AND SEMI-FLUORINATED QUATERNARY AMMONIUM POLYMER COLLOIDS AND COATINGS By ABHIJIT PAUL Bachelor of Science in Chemistry Assam University Silchar, Assam 2001 Master of Science in Polymer Science Tezpur University Tezpur, Assam 2003 Submitted to the Faculty of the Graduate College of the Oklahoma State University in partial fulfillment of the requirements for the Degree of DOCTOR OF PHILOSOPHY July, 2012ii POLYMER FUNCTIONALIZED SINGLE-WALLED CARBON NANOTUBE COMPOSITES AND SEMI-FLUORINATED QUATERNARY AMMONIUM POLYMER COLLOIDS AND COATINGS Dissertation Approved: Dr. Warren T. Ford Dissertation Adviser Dr. Kenneth D. Berlin Dr. Jeffery L. White Dr. Kevin D. Ausman Dr. James P. Wicksted Dr. Sheryl A. Tucker Dean of the Graduate Collegeiii PREFACE In my Ph.D. research I have studied single-walled carbon nanotube (SWCNT) polymer composites that potentially have unique combination of excellent mechanical strength, electrical conductivity, ...
Click the title to purchase the article.. Summary:. "We have evaluated the effect of a colloid solution on acute kidney injury in paediatric cardiac surgery. A total of 195 patients were ramdomly divided into an hydroxyethyl starch group and a control group. In the starch group, 6% hydroxyethyl starch 130/0.4 (Volulyte®) was used as the primary fluid for volume resuscitation but was limited to 30 ml.kg−1. In the control group, only crystalloid fluid was used during the peri-operative period. The incidence of acute kidney injury, peri-operative transfusion, clinical outcomes and laboratory data were compared. The incidence of acute kidney injury determined by Paediatric Risk, Injury, Failure, Loss, End-stage renal disease (pRIFLE) and Acute Kidney Injury Network (AKIN) criteria were no different between the two groups (starch group 40.8% vs. control group 30.0%; p = 0.150 using pRIFLE; 19.6% vs. 21.1% respectively, p = 0.602 using AKIN). There were no differences in clinical outcomes such as ...
... is an interdisciplinary intersection of branches of chemistry, physics, nanoscience and other ... Interface and colloid science has applications and ramifications in the chemical industry, pharmaceuticals, biotechnology, ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution. ... fields dealing with colloids, heterogeneous systems consisting of a mechanical mixture of particles between 1 nm and 1000 nm ...
... colloids; acoustics; viscosity and internal friction of solids; electrets; electrochemistry of oils; radioactive tracers in ...
"Origins of surface charge". Silver Colloids. 2010. Retrieved 27 April 2011. "The electric double layer". Silver Colloids. 2010 ... Surface charge is the electrical potential difference between the inner and outer surface of the dispersed phase in a colloid. ... Hubbe, Martin (2007). "Flocculation of colloids or of fiber slurries". North Carolina State University. Retrieved 16 Apr 2011 ... Journal of Colloid and Interface Science. 280 (2): 544-545. Bibcode:2004JCIS..280..544K. doi:10.1016/j.jcis.2004.08.079. " ...
Colloids Surf. A Physicochem. Eng. Asp. 96: 1-46. doi:10.1016/0927-7757(94)03028-X. A. G. Denkova; E. Mendes; M.-C. Coppens ( ...
Colloids Surf. B Biointerfaces. 140: 392-402. Gajendiran, M; Rhee, JS; Kim, K (2017). "Recent developments in thiolated ...
... is similar to any gel in the way that it is a colloid in which the disperse phase has combined with the ... "Patch Colloids". Research. erc Website. Retrieved 2013-12-02. "Observation of empty liquids and equilibrium gels in a colloidal ... Soft matter is a conceptual term that can be used to categorize polymers, liquid crystals, colloids, amphilphilic molecules, ...
This method was first recorded by M. C. Lea, who successfully produced a citrate-stabilized silver colloid in 1889. Citrate ... In this method, polyvinylpyrrolidone (PVP) is dissolved in water by sonication and mixed with silver colloid particles. Active ... Colloids Surf. B. 77: 240-5. doi:10.1016/j.colsurfb.2010.01.033. CS1 maint: Uses authors parameter (link) Wise JP, Goodale BC, ... Journal of Colloid and Interface Science. 275 (2): 496-502. Bibcode:2004JCIS..275..496S. doi:10.1016/j.jcis.2004.03.003. Li, ...
Colloids and surfaces. 39.2: 303-309. doi:10.1016/0166-6622(89)80281-1. CS1 maint: Multiple names: authors list (link) ...
The Lyophilic Colloids. C.C. Thomas, 1933.[6] Fischer, Martin H., George D. McLaughlin and Marian O. Hooker. Soaps and Proteins ... Their Colloid Chemistry in Theory and Practice. New York: John Wiley & Sons, Inc., 1921.[7] Hooker, Katharine. Byways in ...
Various factors interfere with efficiency: ionic contamination (calcium, magnesium etc.); DOC; bacteria; viruses; colloids & ...
"International Association of Colloid and Interface Scientists" (PDF). Colloids and Surfaces. Retrieved 17 October 2017. " ... He has served as a co-editor of Colloids and Surfaces, and is on the international advisory board of the Chinese Journal of ... In 1999, he co-chaired the 73rd Colloid and Surface Science Symposium, held at MIT, with Paul E. Labinis. Hatton has published ...
Fourth Colloid Symposium 1926, 328-54 (Chem. Catalog Co.). Thomas, A. W. (1927). Emulsions. Journal of the American Leather ... Thomas, A. W. (1934). Colloid Chemistry. New York: McGraw-Hill. Thomas, A. W., & Vartanian, R. D. (1935). The action of acids ... Thomas, A. W. (1918). The nomenclature used in colloid chemistry. A plea for reform. Science, 47, 10-4. Thomas, A. W., & Garard ... Thomas, A. W. (1925). The modern trend in colloid chemistry. Journal of Chemical Education, 2, 323-40. Thomas, A. W., & Kelly, ...
Lyklema, J. Fundamentals of Interface and Colloid Science. p. 4.43. Israelachvili, Jacob N. (1992). Intermolecular and Surface ... Colloids and Surfaces. 1 (1): 45-56. doi:10.1016/0166-6622(80)80037-0. Tschumper, Gregory S. (2008-01-01). Lipkowitz, Kenny B ...
Colloids and surfaces. B, Biointerfaces. 55 (2): 179-84. doi:10.1016/j.colsurfb.2006.11.039. ISSN 0927-7765. PMID 17207975. CS1 ...
He was also made the Director of the Langmuir Center for Colloids and Interfaces in 1987. A year later, in 1988, Somasundaran ... "Colloids and Surfaces". Elsevier. 2014. Retrieved November 7, 2014. "NAE". NAE. 2014. Retrieved November 7, 2014. P ... Somasundaran is the honorary editor-in-chief of Colloids and Surfaces, an international scientific journal published by ... Journal of Colloid and Interface Science. 426 (7): 235-240. doi:10.1016/j.jcis.2014.04.011. P Somasundaran, Partha Patra, Tarun ...
As a member of the Russian Academy of Sciences he laid the foundation of the modern science of colloids and surfaces. An epoch ... Derjaguin became famous in scientific circles for his work on the stability of colloids and thin films of liquids which is now ... It is universally included in text books on colloid chemistry and is still widely applied in modern studies of interparticle ... 2-13 D. Maugis, "Adhesion of spheres: The JKR-DMT transition using a Dugdale model", J. Colloid Interface Sci. 150 (1992), pp. ...
Monodisperse nanoparticles and colloids provide this potential. Monodisperse powders of colloidal silica, for example, may ... The last one, for instance colloid vibration current method is suitable for characterizing concentrated systems. The chemical ... There are traditional techniques developed during 20th century in Interface and Colloid Science for characterizing ... Ramsden, J.J. (2011) Nanotechnology: An Introduction, Elsevier, Amsterdam Zsigmondy, R. (1914) "Colloids and the ...
R. J. Stol & P. L. de Bruyn; "Thermodynamic stabilization of colloids"; Journal of Colloid and Interface Science; May 1980; 75 ... It also has countless applications in technology of colloids, e.g., flotation of minerals. At pzc, the colloidal system ... ISBN 978-0-521-11903-0. Hunter, R.J. (1989). Foundations of Colloid Science. Oxford University Press. IUPAC Gold Book Marek ... CS1 maint: Multiple names: authors list (link) Lyklema, J. (1995). Fundamentals of Interface and Colloid Science. Academic ...
Fundamentals of Interface and Colloid Science. vol. 2. p. 3.208. Hunter, R.J. (1989). Foundations of Colloid Science. Oxford ... It only breaks for nano-colloids in solution with ionic strength close to water. The Smoluchowski theory also neglects the ... Dukhin, A.S.; P.J. Goetz (2002). Ultrasound for characterizing colloids. Elsevier. Reuss, F.F. (1809). "Sur un nouvel effet de ... Kruyt, H.R. (1952). Colloid Science. Volume 1, Irreversible systems. Elsevier. ...
Dalgleish DG (1 November 1998). "Casein micelles as colloids. Surface structures and stabilities". Journal of Dairy Science. 81 ...
Colloidal particles are the components of a colloid. A colloid is a substance microscopically dispersed evenly throughout ... "Colloid". Encyclopædia Britannica. 1 July 2014. Retrieved 2015-04-12. I. N. Levine (2001). Physical Chemistry (5th ed.). McGraw ... Soluble particles smaller than this will form a solution as opposed to a colloid. Colloidal systems (also called colloidal ... solutions or colloidal suspensions) are the subject of interface and colloid science. Suspended solids may be held in a liquid ...
Arshady, R. (1992). "Suspension, Emulsion, and Dispersion Polymerization: A Methodological Survey". Colloid. Polym. Sci. 270: ...
Colloid. Polym. Sci. 99 45-54 (1995) J. Lipfert, S. Klijnhout, and Nynke H. Dekker, "Nucleic Acids Res." "38" 7122-32 (2010) C ...
Colloid Journal. 63 (2): 173-178. doi:10.1023/A:1016673605744.. ...
Colloids and Surfaces B: Biointerfaces. 4 (6): 341-348. doi:10.1016/0927-7765(94)01183-6. Mor, A. Peptide-based antibiotics: A ...
From porous gold nanocups to porous nanospheres and solid particles - A new synthetic approach' Journal of Colloid and ... Formation of spherical nanostructures by the controlled aggregation of gold colloids' in Langmuir, 2006. 'Aligned two-and three ... Colloids and Surfaces B, 2013. 'Synthesis of highly stable and water dispersible Ag44(SR)30 nanoclusters' Journal of Materials ... Journal of Colloid and Interface Science. 446 (Supplement C): 59-66. doi:10.1016/j.jcis.2014.12.091. Ashraf, Sumaira; Chatha, ...
What are colloids?. Colloids are mixtures containing solids in liquid or liquid in liquid and all of these contain distinct ... The size of the particles determines the properties of the colloid.. The term colloid also is specific to the size of the ... The ability of colloids and nanoparticles to initiate inflammatory events within the brain may be based on factors like:. *The ... Particle size and colloids. If the particles are larger, their dynamic behaviour within the suspension is governed by forces of ...
... (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of ... Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of ... Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of ... Colloid Journal Institute is a peer reviewed journal. We use a single blind peer review format. Our team of reviewers includes ...
Interface and colloid science is an interdisciplinary intersection of branches of chemistry, physics, nanoscience and other ... Interface and colloid science has applications and ramifications in the chemical industry, pharmaceuticals, biotechnology, ... Milk is an emulsified colloid of liquid butterfat globules dispersed within a water-based solution. ... fields dealing with colloids, heterogeneous systems consisting of a mechanical mixture of particles between 1 nm and 1000 nm ...
Colloid, any substance consisting of particles substantially larger than atoms or ordinary molecules but too small to be ... More About Colloid. 8 references found in Britannica articles. Assorted References. *candymaking* In candy: Texturizers and ... Colloids are generally classified into two systems, reversible and irreversible. In a reversible system the products of a ... The colloids prepared in living organisms by biological processes are vital to the existence of the organism. Those produced ...
Liz Glogowski keeps us updated on her ongoing research in polymers and colloids. Research at UWEC includes synthesizing and ... Research update for polymers and colloids. Back to Home Menu In Materials Science + Engineering. *Academic Offerings *Majors * ... In addition to researching polymers on their own, the Glogowski group also grafts stimuli-responsive polymers from colloids. ... group builds on the expertise of Glogowski in synthesis and surface functionalization of inorganic nanoparticles and colloids, ...
... a highly successful conference sponsored by the International Association of Colloid and Inte ... This volume includes 58 contributions to the 11th International Conference on Surface and Colloid Science, ... Colloids and Surfaces in Oil Production. Surface and colloid science has acquired great momentum during the past twenty years ... Colloid Science Interfaces Polymer Science Surfaces nanostructure nanotechnology polymer polymers Bibliographic information. * ...
Colloid. Discover more music, concerts, videos, and pictures with the largest catalogue online at Last.fm. ...
Diana Chira and Seong S. Seo, "Designing Zirconium Coated Polystyrene Colloids and Application," Journal of Sensors, vol. 2009 ... Designing Zirconium Coated Polystyrene Colloids and Application. Diana Chira and Seong S. Seo ...
Lecture Colloid Chemistry Lecture on monday, 12:15-14:00 in O25/346, start on October, 15, 2018. ... J. C. Berg, An Introduction to Interfaces and Colloids, Singapore: World Scientific, 2010 (QC 173.4/2010 B) ...
... often colloids - tiny particles in a different medium - or interfaces between two materials. ... Max Planck Institute of Colloids and Interfaces Tiny apatite crystals in bones, vesicles formed out of membranes, pores in ... Peter H. Seeberger from the Max Planck Institute of Colloids and Interfaces in Golm, in contrast, wants to use sugars to ... The structures are often colloids - tiny particles in a different medium - or interfaces between two materials. Many of the ...
The 4 variants are (1) an adult-onset type, (2) a nodular form (nodular colloid degeneration), (3) a juvenile form, and... ... the observance of dermal colloid under light microscopy. ... Colloid milium is a rare condition characterized by (1) the ... encoded search term (Colloid Milium) and Colloid Milium What to Read Next on Medscape. Related Conditions and Diseases. * ... Colloid milium and nodular colloid degeneration. Levers Histopathology of the Skin. 8th ed. Philadelphia, Pa: WB Saunders; ...
Definition of protective colloid. Provided by Stedmans medical dictionary and Drugs.com. Includes medical terms and ... protective colloid. Definition: a colloid that has the power of preventing the precipitation of suspensoids under the influence ...
Definition of lyophobic colloid. Provided by Stedmans medical dictionary and Drugs.com. Includes medical terms and definitions ...
The journal has been published since 1980 as Colloids and Surfaces and subsequently split in 1993 into Colloids and Surfaces A ... Colloids Surf. A. Elsevier. 70 (1): v. 1993. doi:10.1016/0927-7757(93)80490-6. Retrieved 7 July 2013. "Colloids and Surfaces A ... Colloids and Surfaces A: Physicochemical and Engineering Aspects is a peer-reviewed scientific journal publishing research on ... and Colloids and Surfaces B. The journal is published biweekly by Elsevier and jointly edited by M. Adler, F. Grieser, J.B. Li ...
Colloids and Surfaces B: Biointerfaces is a peer-reviewed scientific journal covering research of interface and colloid science ... The journal has been published since 1980 as Colloids and Surfaces and subsequently split in 1993 into Colloids and Surfaces A ... Colloids Surf. B. Elsevier. 1 (1): v. doi:10.1016/0927-7765(93)80010-V. Retrieved 8 July 2013. "Colloids and Surfaces B: ... and Colloids and Surfaces B. It is published monthly by Elsevier and jointly edited by J.L. Brash, H.J. Busscher, H. Chen and D ...
A colloid is typically a two phase system consisting of a continuous phase and dispersed phase. The particle size of the ...
Colloids in Severe Trauma: A Multi-Center Pilot Study of Crystalloid Only or Crystalloid + Colloid Volume Resuscitation in ... It is hoped that the hybrid colloid (HES) plus crystalloid fluid management regimen will provide a means to avoid the untoward ... Active Comparator: Colloid + Crystalloid arm Goal directed volume therapy for severe trauma resuscitation ... which were representative solutions for colloid and crystalloids respectively), 4% albumin and saline, was established. This ...
This volume includes 11 contributions to the 23rd Conference of the European Colloid and Interface Society which took in ... This volume includes 11 contributions to the 23rd Conference of the European Colloid and Interface Society which took in ... Part of the Progress in Colloid and Polymer Science book series (PROGCOLLOID, volume 137) ... Biomaterials and Medical AspectsDue to the increasing significance of Colloid and Interface Science for both scientific and ...
The choice of fluid depends mainly on local tradition, and colloids were often selected over crystalloids because of their ... Current guidelines do not recommend choosing colloids over crystalloids1 as improvements in outcome have never been established ... 2 3 but debate continues on the use of colloids in this setting. ... Colloid solutions in the perioperative setting Your Personal ... Colloid solutions in the perioperative setting. BMJ 2015; 350 doi: https://doi.org/10.1136/bmj.h1656 (Published 27 March 2015) ...
Mucinous or Colloid Carcinoma. 15 Sep 2010 00:02 Hi,. Does anyone else have a diagnosis of mucinous or colloid breast carcinoma ... Re: Mucinous or Colloid Carcinoma. 25 Sep 2010 18:39 in response to Jolamine Hi, yes the radiation is all done as of last wed. ... Re: Mucinous or Colloid Carcinoma. 25 Sep 2010 03:49 in response to Jolamine Hey its me debbie, I talked with you about 3 weeks ... Mucinous or Colloid Carcinoma. Cancer Chat Homepage. *Welcome to the forum*Introduce yourself ...
Clay Swelling and Colloid Stability puts emphasis on two significant paradigm shifts in colloid science that explain particle ... Based on the authors own research and 36 publications in the field, Clay Swelling and Colloid Stability isa self-contained and ... He provides rigorous derivations that place the new electrical theory for charged colloids on a firm foundation in statistical ... The author illustrates why a new, quantitative bridging flocculation model for polymer-stabilized colloids must replace the ...
The Dy colloids in 2-methoxyethanol are the most stable, followed by the Dy colloids prepared in 2-propanol and acetone. The ... Colloids that exhibit a higher particle sizes are also the most stables ( Dy-2-methoxyethanol), the colloids of Dy-2-propanol ... On the other hand, metal concentration in the colloids is also related to their stabilities. For colloids, when metal ... For the 2-methoxyethanol colloids, it can be observed that colloid particles possess a metallic behavior (inter band transition ...
Specialist Periodical Reports provide systematic and detailed review coverage of progress in the major areas of chemical research. Written by experts in their specialist fields the series creates a unique service for the active research chemist, supplying regular critical in-depth accounts of progress in particular areas of chemistry. For over 80 years the Royal Society of Chemistry and its predecessor, the Chemical Society, have been publishing reports charting developments in chemistry, which originally took the form of Annual Reports. However, by 1967 the whole spectrum of chemistry could no longer be contained within one volume and the series Specialist Periodical Reports was born. The Annual Reports themselves still existed but were divided into two, and subsequently three, volumes covering Inorganic, Organic and Physical Chemistry. For more general coverage of the highlights in chemistry they remain a must. Since that time the SPR series has altered according to the fluctuating degree of
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Colloids and Surfaces B: Biointerfaces, 26(1-2), 37-46. [PII S0927-7765(02)00033-4]. https://doi.org/10.1016/S0927-7765(02) ... Colloids and Surfaces B: Biointerfaces, 37(1-2), 53-60. https://doi.org/10.1016/j.colsurfb.2004.06.009 ... Colloids and Surfaces B: Biointerfaces, 87(2), 427-432. https://doi.org/10.1016/j.colsurfb.2011.06.002 ... Colloids and Surfaces B: Biointerfaces, 84(1), 76-81. https://doi.org/10.1016/j.colsurfb.2010.12.018 ...
  • The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. (springer.com)
  • In a rare, over-the-shoulder perspective of a leading scientist's own breakthroughs, Clay Swelling and Colloid Stability puts emphasis on two significant paradigm shifts in colloid science that explain particle interactions for charged plates, stacks, suspensions, and pastes as well as spherical colloids. (google.com)
  • Martin Smalley first discusses the replacement of the DLVO theory with the Coulombic Attraction Theory to explain the existence, extent, and properties of the two-phase region of colloid stability. (google.com)
  • Based on the author's own research and 36 publications in the field, Clay Swelling and Colloid Stability isa self-contained and intellectually satisfying account of the revolutionary process leading to a universally sound, and increasingly applicable, theory of colloid stability. (google.com)
  • Colloid stability depends on both solvent and metal concentration. (scielo.cl)
  • The highest stability was obtained in 2-methoxyethanol, which is in agreement with previous results for other lanthanide colloids already reported. (scielo.cl)
  • Colloid stability changes, depends on the participating solvents. (scielo.cl)
  • Cs and Eu, (3) to determine the potential of Hanford sediments for \textit{in situ} mobilization of colloids, (4) to evaluate colloid-facilitated radionuclide transport through sediments under unsaturated flow, (5) to implement colloid-facilitated contaminant transport mechanisms into a transport model, and (6) to improve conceptual characterization of colloid-contaminant-soil interactions and colloid-facili\-tated transport for clean-up procedures and long-term risk assessment. (unt.edu)
  • A thorough characterization of the physical and chemical properties of these colloids under relevant conditions is essential to assess the concentration limits and transport mechanisms for the waste elements at the proposed Yucca Mountain Repository site. (unt.edu)
  • This report is concerned primarily with recent results obtained by the Yucca Mountain Project (YMP) Solubility Determination Task pertaining to the characterization of the structural and chemical properties of Pu(IV) colloid. (unt.edu)
  • With the publication of the landmark SAFE Study the equipoise between the 2 treatments (which were representative solutions for colloid and crystalloids respectively), 4% albumin and saline, was established. (clinicaltrials.gov)
  • The choice of fluid depends mainly on local tradition, and colloids were often selected over crystalloids because of their expected ability to expand plasma volume more effectively. (bmj.com)
  • Current guidelines do not recommend choosing colloids over crystalloids 1 as improvements in outcome have never been established, 2 3 but debate continues on the use of colloids in this setting. (bmj.com)
  • Older studies found differences between crystalloids and colloids. (nursingcenter.com)
  • This review article will provide an overview of these substances and discuss the advantages, disadvantages, and implications for giving crystalloids and colloids in clinical practice. (nursingcenter.com)
  • No randomised or controlled trial was identified comparing albumin to crystalloids (other than normal saline) or non-protein colloids, or a combination of both, in the treatment of symptomatic hypotension during dialysis. (curehunter.com)
  • Colloid cysts are benign slow-growing cystic lesions located on the roof of the third ventricle that usually present with symptoms related to gradual rise of intracranial pressure. (hindawi.com)
  • Acute hemorrhage in colloid cysts is extremely rare and may present with symptoms of acute increase in the intracranial pressure. (hindawi.com)
  • Materials and Method: The patients aged 16 years and below with colloid cysts, operated between 2001-2009, were evaluated retrospectively. (thefreedictionary.com)
  • This study will serve as a pilot to test the hypothesis that there will be significant differences in clinical outcomes for patients with severe trauma treated with colloid (HES) plus crystalloid and crystalloid only fluid management regimens, most notably the incidence of IAH and ACS. (clinicaltrials.gov)
  • It is hoped that the hybrid colloid (HES) plus crystalloid fluid management regimen will provide a means to avoid the untoward fluid overload and/or other complications of pure crystalloid fluid management and the costs/complications of albumin administration. (clinicaltrials.gov)
  • Different studies have indicated either crystalloid or colloid is the ideal intravenous solution to administer, based on mortality or various physiological parameters. (nursingcenter.com)
  • We also had similar incidence of hypotension in crystalloid group but in colloid group the incidence is comparatively more in our study. (thefreedictionary.com)
  • Current research in the Glogowski group builds on the expertise of Glogowski in synthesis and surface functionalization of inorganic nanoparticles and colloids, polymerization using controlled free radical techniques such as ATRP and RAFT, patterning of photoresponsive surfaces, and preparation of microfluidic devices for formation of microcapsules for carbon capture. (uwec.edu)
  • Albert's main research interests are the chemical synthesis, thermodynamics and physical transport properties of dispersions of charged, magnetic and non-spherical colloids. (springer.com)
  • Among the causal factors of colloid goiter, foods that block the hormonal synthesis, mutations in TSH receptors, iodine-poor diets, globulin stimulation of thyroid development, growth hormone (GH), insulin-like growth factor (IGF-1), and genetic factors are implicated 3 . (scielo.br)
  • Tiny papule formed beneath the epidermis due to colloid degeneration. (thefreedictionary.com)
  • The colloid degeneration disorders are characterised by amorphous , hyaline -like deposits in the dermis , which classically present as yellow-brown, semi- translucent papules and plaques over sun-exposed areas . (dermnetnz.org)
  • The colloid material is suspected to relate to actinic degeneration of elastic fibres ( solar elastosis ) . (dermnetnz.org)
  • An everyday experience, says Dr Paul Reynolds, manager of the Bristol Colloid Centre. (bris.ac.uk)
  • Zeta Potential (ξ) of the colloids ranges between 0.1430 and 1.945 mV. (scielo.cl)
  • Emulsion polymerizations of vinyl acetate (VAc) were performed by fully or partially replacing poly(vinyl alcohol) (PVA) with renewable materials as protective colloids or by adding renewable materials, as additives or fillers, to the emulsions during or after polymerization. (diva-portal.org)
  • The aim of this investigation was to quantitatively evaluate C-cells in colloid goiters, analyzing 36 thyroids that were obtained through thyroidectomy from 24 patients with goiter and 12 normal glands from adult patients without thyroid disease, which were used as the control group. (scielo.br)
  • In the colloid goiter group, the number of C-cells ranged from 0 to 23 per field, while in normal controls they ranged from 20 to 148 per field. (scielo.br)
  • These results demonstrate a significant decrease of C-cell number in the colloid goiter group compared with control group, indicating that the hyperplastic process is restricted to follicular cells, to the detriment of C-cells, which probably cease to receive trophic stimuli. (scielo.br)
  • Colloid goiter. (scielo.br)
  • Colloid goiter is a hyperplastic disease of thyroid follicular cells due to multifactorial causes. (scielo.br)
  • Retrieved on April 06, 2020 from https://www.news-medical.net/life-sciences/Nanoparticle-Colloids.aspx. (news-medical.net)
  • In the event of a breach of a repository, these colloids represent a source of radionuclide transport to the far-field environment, in parallel with the transport of dissolved waste element species. (unt.edu)
  • Many colloids by this definition are not considered to be such by those who study them. (asmblog.org)
  • For example, whereas a colloid by that definition is a substance that consists of small particles, in physics the small particles themselves are often called colloids. (asmblog.org)
  • Also, 'colloid' often implies that the small particles are dispersed in a fluid, although that is not required by this definition. (asmblog.org)
  • Dry strength resins are prepared by reacting acrylamide polymers with amino/aldehyde resin acid colloids during the formation of the colloid. (google.ca)
  • This patent teaches the use of a partially or fully polymerized (condensed) melamine-for-maldehyde resin in the formation of the acid colloid and the reaction of the acid colloid with the starch. (google.ca)
  • HEC and starch were used as protective colloids. (diva-portal.org)
  • No. 3,594,271, there is disclosed the reaction product of a water-soluble starch and a melamineformaldehyde acid colloid as a dry strength imparting formaldehyde acid colloid as a dry strength imparting additive for paper. (google.ca)
  • Also, high quality research contributions describing original and unpublished results of conceptual, constructive, empirical, experimental, or theoretical work in all areas of Biomaterials, Colloids and Nanomedicine are cordially invited for presentation at the conference. (waset.org)
  • The book starts with fundamentals in Part I, covering fundamental aspects of colloid and interface sciences as applied to pharmaceutical sciences and thus should be suitable for teaching. (elsevier.com)
  • PRINCETON, N.J., May 17, 2007 -- In answering a fundamental question about the unique properties of colloids, chemical engineers may have opened up a range of practical applications for them, including the manufacturing of medicines and optical fibers. (photonics.com)
  • From 9 - 11 October the Physics Department hosted the 48th general meeting of the German "Kolloid-Gesellschaft" (Colloid Society). (tum.de)
  • Colloidal structures tend to be too big for the methods of atomic and molecular physics such as X-ray crystallography, too small to be resolved in the light microscope (although confocal developments in high resolution microscopy are extending our vision toward the colloids). (asmblog.org)
  • The inhibitory effect of the colloids grows with increase in concentration, which increase affects both the velocity and extent of the diffusion. (rupress.org)
  • Because it is comprised of two important physical properties, namely, particle size and particle concentration , it serves as good metric for comparing colloids. (silver-colloids.com)
  • Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface. (springer.com)
  • The result is a microscopic model which includes chemical speciation, electrochemical characteristics of the medium and colloids, pH, ionic strength and surface boundary-layer phenomena. (asce.org)
  • Since the invention of ink over 3000 years ago, people have exploited the unique properties of colloids, in which particles of one substance are suspended in another. (photonics.com)
  • French scientists have used magnetic colloids to make self-assembling, helical structures reminiscent of DNA. (nanotech-now.com)
  • The principle structure is the same as in colloids, but it's done with magnetic force rather than electric force. (xenodochy.org)
  • This work focuses on the systematic investigation of the two well-established methods of structural surface charge density determination on magnetic colloids, labeled as Single Potentiometric Method (SPM) and Potentiometric-Conductometric Method (PCM). (scielo.br)
  • To compare some important features of the methods we determined the structural surface charge density of magnetic colloids samples based on CoFe 2 O 4 @ɣ-Fe 2 O 3 core-shell nanoparticles with three different mean sizes using both strategies. (scielo.br)
  • Finally, both the SPM and PCM are reproducible and can be effectively applied to determine the saturation value of the surface charge density on magnetic colloids. (scielo.br)
  • Milk is an emulsified colloid of liquid butterfat globules dispersed within a water -based solution. (wikipedia.org)
  • From blood to milk, pumice to gelatine, most scientists interact with colloids on a daily basis without any real knowledge of their nature. (barnesandnoble.com)
  • As an example, milk is a complex mixture of different colloids and other substances in water. (tum.de)
  • Milk is a colloid. (asmblog.org)