Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics.
The force acting on the surface of a liquid, tending to minimize the area of the surface. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Substances and drugs that lower the SURFACE TENSION of the mucoid layer lining the PULMONARY ALVEOLI.
The adhesion of gases, liquids, or dissolved solids onto a surface. It includes adsorptive phenomena of bacteria and viruses onto surfaces as well. ABSORPTION into the substance may follow but not necessarily.
Protein-lipid combinations abundant in brain tissue, but also present in a wide variety of animal and plant tissues. In contrast to lipoproteins, they are insoluble in water, but soluble in a chloroform-methanol mixture. The protein moiety has a high content of hydrophobic amino acids. The associated lipids consist of a mixture of GLYCEROPHOSPHATES; CEREBROSIDES; and SULFOGLYCOSPHINGOLIPIDS; while lipoproteins contain PHOSPHOLIPIDS; CHOLESTEROL; and TRIGLYCERIDES.
Characteristics or attributes of the outer boundaries of objects, including molecules.
Lipids containing one or more phosphate groups, particularly those derived from either glycerol (phosphoglycerides see GLYCEROPHOSPHOLIPIDS) or sphingosine (SPHINGOLIPIDS). They are polar lipids that are of great importance for the structure and function of cell membranes and are the most abundant of membrane lipids, although not stored in large amounts in the system.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).
Substances that reduce the growth or reproduction of BACTERIA.
Activity involved in transfer of goods from producer to consumer or in the exchange of services.
Detailed account or statement or formal record of data resulting from empirical inquiry.
The internal resistance of the BLOOD to shear forces. The in vitro measure of whole blood viscosity is of limited clinical utility because it bears little relationship to the actual viscosity within the circulation, but an increase in the viscosity of circulating blood can contribute to morbidity in patients suffering from disorders such as SICKLE CELL ANEMIA and POLYCYTHEMIA.
The process whereby PLATELETS adhere to something other than platelets, e.g., COLLAGEN; BASEMENT MEMBRANE; MICROFIBRILS; or other "foreign" surfaces.
The resistance that a gaseous or liquid system offers to flow when it is subjected to shear stress. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
The volume of packed RED BLOOD CELLS in a blood specimen. The volume is measured by centrifugation in a tube with graduated markings, or with automated blood cell counters. It is an indicator of erythrocyte status in disease. For example, ANEMIA shows a low value; POLYCYTHEMIA, a high value.
Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation.
Diversion of blood flow through a circuit located outside the body but continuous with the bodily circulation.
A plant family of the order Bromeliales, subclass Zingiberidae, class Liliopsida (monocotyledons).
The myrtle plant family of the order Myrtales. It includes several aromatic medicinal plants such as EUCALYPTUS.
A group comprised of several species of eared seals found in two genera, in the family Otariidae. In comparison to SEA LIONS, they have an especially dense wooly undercoat.
A plant genus of the family MAGNOLIACEAE. The germacranolide sesquiterpene lactones costunolide, parthenolide, and costunolide diepoxide have been isolated from the leaves. Bark contains honokiol and magnolol. Parts are an ingredient of Banxia Houpo Tang.
The outer layer of the woody parts of plants.
A class of dibenzylbutane derivatives which occurs in higher plants and in fluids (bile, serum, urine, etc.) in man and other animals. These compounds, which have a potential anti-cancer role, can be synthesized in vitro by human fecal flora. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed)
A plant family of the order Magnoliales, subclass Magnoliidae, class Magnoliopsida. They are trees and shrubs having an elongated conelike floral axis with fragrant flowers that have six tepals (sepals and petals that are not distinctly different) and many spirally arranged stamens.
Exclusive legal rights or privileges applied to inventions, plants, etc.
A novel composition, device, or process, independently conceived de novo or derived from a pre-existing model.
Propylene or propene polymers. Thermoplastics that can be extruded into fibers, films or solid forms. They are used as a copolymer in plastics, especially polyethylene. The fibers are used for fabrics, filters and surgical sutures.
The misinterpretation of a real external, sensory experience.
High molecular weight polysaccharides present in the cell walls of all plants. Pectins cement cell walls together. They are used as emulsifiers and stabilizers in the food industry. They have been tried for a variety of therapeutic uses including as antidiarrheals, where they are now generally considered ineffective, and in the treatment of hypercholesterolemia.
Polysaccharides found in bacteria and in capsules thereof.
A country spanning from central Asia to the Pacific Ocean.
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter.
Concept referring to the standardized fees for services rendered by health care providers, e.g., laboratories and physicians, and reimbursement for those services under Medicare Part B. It includes acceptance by the physician.
A shared service which combines the purchasing power of individual organizations or facilities in order to obtain lower prices for equipment and supplies. (From Health Care Terms, 2nd ed)
Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)
A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.
A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].
Inorganic compounds that contain silicon as an integral part of the molecule.
Drugs manufactured and sold with the intent to misrepresent its origin, authenticity, chemical composition, and or efficacy. Counterfeit drugs may contain inappropriate quantities of ingredients not listed on the label or package. In order to further deceive the consumer, the packaging, container, or labeling, may be inaccurate, incorrect, or fake.

Bacteriophage inactivation at the air-water-solid interface in dynamic batch systems. (1/2324)

Bacteriophages have been widely used as surrogates for human enteric viruses in many studies on virus transport and fate. In this investigation, the fates of three bacteriophages, MS2, R17, and phiX174, were studied in a series of dynamic batch experiments. Both MS2 and R17 readily underwent inactivation in batch experiments where solutions of each phage were percolated through tubes packed with varying ratios of glass and Teflon beads. MS2 and R17 inactivation was the result of exposure to destructive forces at the dynamic air-water-solid interface. phiX174, however, did not undergo inactivation in similar studies, suggesting that this phage does not accumulate at air-water interfaces or is not affected by interfacial forces in the same manner. Other batch experiments showed that MS2 and R17 were increasingly inactivated during mixing in polypropylene tubes as the ionic strength of the solution was raised (phiX174 was not affected). By the addition of Tween 80 to suspensions of MS2 and R17, phage inactivation was prevented. Our data suggest that viral inactivation in simple dynamic batch experiments is dependent upon (i) the presence of a dynamic air-water-solid interface (where the solid is a hydrophobic surface), (ii) the ionic strength of the solution, (iii) the concentration of surface active compounds in the solution, and (iv) the type of virus used.  (+info)

Contrasting effects of a nonionic surfactant on the biotransformation of polycyclic aromatic hydrocarbons to cis-dihydrodiols by soil bacteria. (2/2324)

The biotransformation of the polycyclic aromatic hydrocarbons (PAHs) naphthalene and phenanthrene was investigated by using two dioxygenase-expressing bacteria, Pseudomonas sp. strain 9816/11 and Sphingomonas yanoikuyae B8/36, under conditions which facilitate mass-transfer limited substrate oxidation. Both of these strains are mutants that accumulate cis-dihydrodiol metabolites under the reaction conditions used. The effects of the nonpolar solvent 2,2,4, 4,6,8,8-heptamethylnonane (HMN) and the nonionic surfactant Triton X-100 on the rate of accumulation of these metabolites were determined. HMN increased the rate of accumulation of metabolites for both microorganisms, with both substrates. The enhancement effect was most noticeable with phenanthrene, which has a lower aqueous solubility than naphthalene. Triton X-100 increased the rate of oxidation of the PAHs with strain 9816/11 with the effect being most noticeable when phenanthrene was used as a substrate. However, the surfactant inhibited the biotransformation of both naphthalene and phenanthrene with strain B8/36 under the same conditions. The observation that a nonionic surfactant could have such contrasting effects on PAH oxidation by different bacteria, which are known to be important for the degradation of these compounds in the environment, may explain why previous research on the application of the surfactants to PAH bioremediation has yielded inconclusive results. The surfactant inhibited growth of the wild-type strain S. yanoikuyae B1 on aromatic compounds but did not inhibit B8/36 dioxygenase enzyme activity in vitro.  (+info)

Interaction of tumor and normal blood cells with ethylene oxide and propylene oxide block copolymers. (3/2324)

Ethylene oxide and propylene oxide block copolymers (pluronics) are widely known as agents that promote drug penetration across biological barriers. We have studied the interaction of normal and malignant blood cells with pluronics L61 and P85 that have different hydrophobicity. SP2/0 myeloma cells accumulated pluronics while normal cells adsorb most of the polymer on the surface. Interaction of pluronics with cells resulted in drastic changes of membrane microviscosity. Tumor cell membrane microviscosity decreased after pluronics adsorption, in contrast to normal cells, whose membrane microviscosity was enhanced. We suppose that sensitivity of tumor cell membrane microviscosity to the pluronics action correlates with its permeability for molecular substances.  (+info)

Effects of surfactant mixtures, including Corexit 9527, on bacterial oxidation of acetate and alkanes in crude oil. (4/2324)

Mixtures of nonionic and anionic surfactants, including Corexit 9527, were tested to determine their effects on bacterial oxidation of acetate and alkanes in crude oil by cells pregrown on these substrates. Corexit 9527 inhibited oxidation of the alkanes in crude oil by Acinetobacter calcoaceticus ATCC 31012, while Span 80, a Corexit 9527 constituent, markedly increased the oil oxidation rate. Another Corexit 9527 constituent, the negatively charged dioctyl sulfosuccinate (AOT), strongly reduced the oxidation rate. The combination of Span 80 and AOT increased the rate, but not as much as Span 80 alone increased it, which tentatively explained the negative effect of Corexit 9527. The results of acetate uptake and oxidation experiments indicated that the nonionic surfactants interacted with the acetate uptake system while the anionic surfactant interacted with the oxidation system of the bacteria. The overall effect of Corexit 9527 on alkane oxidation by A. calcoaceticus ATCC 31012 thus seems to be the sum of the independent effects of the individual surfactants in the surfactant mixture. When Rhodococcus sp. strain 094 was used, the alkane oxidation rate decreased to almost zero in the presence of a mixture of Tergitol 15-S-7 and AOT even though the Tergitol 15-S-7 surfactant increased the alkane oxidation rate and AOT did not affect it. This indicated that there was synergism between the two surfactants rather than an additive effect like that observed for A. calcoaceticus ATCC 31012.  (+info)

Proteolytic activation and inactivation of chitin synthetase from Mucor rouxii. (5/2324)

Crude chitin synthetase preparations from the mycelial and yeast forms of Mucor rouxii behaved differently. The mycelial preparations, incubated at 28 degrees C, lost virtually all chitin synthetase activity in a few hours; by contrast, the activity of enzyme preparations from yeast cells increased several fold during similar incubations. These spontaneous changes were probably caused by endogenous protease(s). Seemingly, the chitin synthetase in yeast preparations was present mainly in a latent, 'zymogenic', form that was activated by proteases. In the mycelial preparations, chitin synthetase was present mainly in an active state and was rapidly degraded by endogenous proteolysis. Exogenous proteases accelerated activation and destruction of chitin synthetase; an acid protease from Rhizopus chinensis was the most effective activator. The activation of chitin synthetase was inhibited by a soluble protein in the cell-free extract. Treatment with the detergent Brij 36T stabilized the chitin synthetase of crude preparations against spontaneous changes. Stabilized preparations were rapidly activated by exogenous proteases. The different behaviour of chitin synthetases in crude extracts of mycelium and yeast cells is consistent with, and perhaps partially responsible for, the differences in wall construction between mycelial and yeast forms of M. rouxii.  (+info)

Phorbol ester-induced disruption of the CD4-Lck complex occurs within a detergent-resistant microdomain of the plasma membrane. Involvement of the translocation of activated protein kinase C isoforms. (6/2324)

Recent studies have highlighted the existence of discrete microdomains at the cell surface that are distinct from caveolae. The function of these microdomains remains unknown. However, recent evidence suggests that they may participate in a subset of transmembrane signaling events. In hematopoietic cells, these low density Triton-insoluble (LDTI) microdomains (also called caveolae-related domains) are dramatically enriched in signaling molecules, such as cell surface receptors (CD4 and CD55), Src family tyrosine kinases (Lyn, Lck, Hck, and Fyn), heterotrimeric G proteins, and gangliosides (GM1 and GM3). Human T lymphocytes have become a well established model system for studying the process of phorbol ester-induced down-regulation of CD4. Here, we present evidence that phorbol 12-myristate 13-acetate (PMA)-induced down-regulation of the cell surface pool of CD4 occurs within the LDTI microdomains of T cells. Localization of CD4 in LDTI microdomains was confirmed by immunoelectron microscopy. PMA-induced disruption of the CD4-Lck complex was rapid (within 5 min), and this disruption occurred within LDTI microdomains. Because PMA is an activator of protein kinase C (PKC), we next evaluated the possible roles of different PKC isoforms in this process. Our results indicate that PMA induced the rapid translocation of cytosolic PKCs to LDTI microdomains. We identified PKCalpha as the major isoform involved in this translocation event. Taken together, our results support the hypothesis that LDTI microdomains represent a functionally important plasma membrane compartment in T cells.  (+info)

Polyethylene-glycol, a potent suppressor of azoxymethane-induced colonic aberrant crypt foci in rats. (7/2324)

Bulking fibers and high water intake may decrease colon carcinogenesis in rats, and the risk of colorectal cancer in humans. We speculated that a non-fermented polymer, polyethylene-glycol (PEG) 8000, which increases stool moisture, might protect rats against colon carcinogenesis. Thirty female F344 rats were given a single injection of azoxymethane (20 mg/kg), and 7 days later randomized to AIN76 diets containing PEG (to provide 3 g/kg body wt/day), or no PEG (control). Diets were given ad libitum for 105 days, then colon carcinogenesis was assessed by the aberrant crypt foci (ACF) test. ACF were scored blindly by a single observer. Dietary feeding of PEG almost suppressed ACF larger than one crypt, and strikingly decreased the total number of ACF per rat. PEG-fed rats had 100 times less large ACF than controls (0.8 and 83 respectively, P = 0.00001). PEG-fed rats had 20 times less total ACF than control (six and 107 ACF/rat, respectively; P < 0.0001). Two treated rats had no detectable ACF. PEG is 10 times more potent than other chemopreventive agents in this model. Since PEG is generally recognized as safe, its cancer-preventive features could be tested in humans.  (+info)

Simultaneous presence of p47(phox) and flavocytochrome b-245 are required for the activation of NADPH oxidase by anionic amphiphiles. Evidence for an intermediate state of oxidase activation. (8/2324)

We have examined the kinetics of NADPH oxidase activation induced by arachidonic acid or SDS in a cell-free system using mixtures of recombinant Phox proteins and purified flavocytochrome b-245. Activation of oxidase activity required the simultaneous presence of p47(phox), flavocytochrome b-245, and the anionic amphiphile. The activation of electron transfer reactions was much more rapid when iodonitrotetrazolium violet was used as electron acceptor than when oxygen alone was the acceptor. We propose that this difference represents an intermediate activation state of NADPH oxidase in which electron flow can proceed from NADPH to enzyme flavin (and hence to iodonitrotetrazolium violet) but not from flavin to heme (or not between the hemes). A model for NADPH oxidase activation is presented that is consistent with these observations.  (+info)

0013] This invention relates to creating a new class of surface-active agents (amphiphilic molecules) from naturally occurring polysaccharides. The starting materials used in this invention are either partially water-soluble or completely insoluble polysaccharides. They were hydrophilically modified to yield effective wetting agents or emulsifiers. See examples 1-7 for methods of hydrophilically modifying water insoluble polysaccharide. See example 1 and Table 1 for surface tension results. In one of the embodiments, the hydrophilic modification involves covalent functionalization of the polygalacturonic acid using naturally occurring or synthetic molecules that may include but are not restricted to amino acids, peptides, and lipids containing sulfonate groups, and/or polyethylene glycol (PEG) or polypropylene glycol (PPG) homopolymers and copolymers. In another embodiment the said modification process can be carried out with conventional chemical methods using heat supplied using conventional ...
The effects of Pluronic F68, a nonionic surface-active agent, on blood viscosity and platelet adhesiveness during extracorporeal circulation were investigated. Blood viscosity was significantly decreased. Platelet adhesiveness decreased markedly in six patients within ten minutes after intravenous injection. Pluronic F68 has many properties and actions which make it a useful additive to perfusion systems. Its potential in the treatment of diseases in which high viscosity or increased platelet adhesiveness are present deserves investigation.. ...
Contents of the 15 Chapter for This Anionic Surfactants Market Study:-. Chapter 1: to describe Global Anionic Surfactants Market Introduction, product scope, market overview, market opportunities, market risk, market driving force;. Chapter 2: to analyze the top manufacturers of Global Anionic Surfactants Market, with sales, revenue, and price of Global Anionic Surfactants Market, in 2016 and 2017;. Chapter 3: to display the competitive situation among the top manufacturers, with sales, revenue and market share in 2016 and 2017;. Chapter 4: to show the Global Anionic Surfactants market by regions, with sales, revenue and market share of Global Anionic Surfactants Market, for each region, from 2012 to 2017;. Chapter 5, 6, 7, 8 and 9: to analyze the key regions, with sales, revenue and market share by key countries in these regions;. Chapter 10 and 11: to show the market by type and application, with sales market share and growth rate by type, application, Methodology, Analyst Introduction, Data ...
In the present work, the cloud point extraction (CPE) of three organic pollutants (phenol,benzyl alcohol and 1-phenylethanol) with aqueous solutions of biodegradable alkoxylated nonionic surfactants (TERGITOL 15-S-7 and SIMULSOL NW342), is investigated. First, the partial phase diagrams of the water-surfactant binary systems are established. Then, the effects of organic pollutants and sodium chloride on the cloud point (Tc) are determined. Extraction efficiency is evaluated by the following responses: percentage of solute extracted, E (%), residual concentrations of solute and surfactant in dilute phase (Xs,w, and Xt,w, respectively) and volume fraction of coacervate at equilibrium (ϕc). Three-dimensional empirical correlations are used for fitting the experimental results. The comparison between experimental and calculated values allows model parameter identification. Based on these data, CPE was implemented in a continuous mixer-settler device. The feasibility of a multi-stage crossflow ...
The invention provides compositions intended for the treatment of fibrous materials. These compositions contain at least one cationic polymer, at least one anionic polymer, at least one alkali metal salt and at least one non-ionic surface-active agent or surface-active agent which contains one or more carboxyl or carboxylate groups in addition to non-ionic groups.
Vanity - Sebum-Balancing Soap - Bema Boutique eCommerce, This detergent is especially suitable for greasy and combination skins. It dissolves and eliminates the exceeding skin sebum, horny scales, dust traces and impurities without attacking the skins natural defences. It has a purifying and cleansing action. It does not contain surface-active agents. Its cleansing action does not impoverish the skin hydrolipidic layer not to stimulate the sebaceous secretion. This detergent is especially suitable for greasy and combination skins. It dissolves and eliminates the exceeding skin sebum, horny scales, dust traces and impurities without attacking the skins natural defences. It has a purifying and cleansing action. It does not contain surface-active agents. Its cleansing action does not impoverish the skin hydrolipidic layer not to stimulate the sebaceous secretion.
Font - Ribera, Laia ; Kogevinas, Manolis ; Zock, Jan - Paul ; Gomez, Federico P. ; Barreiro, Esther ; Nieuwenhuijsen, Mark J. ; Fernandez, Pilar ; Lourencetti, Carolina ; Perez - Olabarria, Maitane ; Bustamante, Mariona ; Marcos, Ricard ; Grimalt, Joan O. ; Villanueva, Cristina M ...
Nonionic surfactants are surface active agents which do not dissociate into ions in aqueous solutions, unlike anionic surfactants which have a negative charge and cationic surfactants which have a positive charge in aqueous solution. Nonionic surfactants are more widely used as detergents than ionic surfactants because anionic surfactants are insoluble in many hard water and cationic surfactants are considered to be poor cleaners. In addition to detergency, nonionic surfactants show excellent solvency, low foam properties and chemical stability. It is thought that nonionic surfactants are mild on the skin even at high loadings and long-term exposure. The hydrophilic group of nonionic surfactants is a polymerized alkene oxide (water soluble polyether with 10 to 100 units length typically). They are prepared by polymerization of ethylene oxide, propylene oxide, and butylene oxide in the same molecule. Depending on the ratio and order of oxide addition, together with the number of carbon atoms ...
Studies on a model ink suspension have shown that the effect of non-ionic dispersion agents on ink agglomeration using fatty acid chemistry as collector was highly temperature-dependent. The non-ionic surfactant reduced the agglomeration efficiency at low temperatures (below the cloud point of the surfactant) but this negative effect was reduced at increasing temperatures. At temperatures above the cloud point the non-ionic surfactant improved the agglomeration. The non-ionic surfactant adsorbs to both the ink and precipitated soap particles, which at low temperatures resulted in an increased colloidal stability of the particles but at higher temperatures led to a destabilisation of the particles due to the increased hydrophobicity of the surfactant. The surfactants clearly affected the precipitation of fatty acid anions to calcium soaps and at very high surfactant concentrations the formation of calcium soap particles was drastically reduced. The most favourable conditions seemed to be ...
The cloud points (CP) of 1 g/dl solutions of polyethylene oxide-polypropylene oxide (PEO-PPO) based triblock copolymers (Pluronics® P84, L64, L44 and Reverse Pluronics® 10R5, 25R4, 17R4) were measured as a function of their molecular weight and added ionic surfactant. For identical PEO/PPO ratios, copolymers with lower molecular weight show a larger increase in the cloud point in the presence of surfactants than polymers with higher molecular weight. The opposite trend has been observed for reverse Pluronics. The cloud points of polymers with different PEO/PPO ratios have also been reported. An increase in the size of the middle PEO block in reverse Pluronics has a more significant effect on cloud points than molecular weight increment. Ionic surfactants produced marked increases in the cloud points of copolymer solutions. The effect was much larger for surfactants with higher hydrophobicity. Cationic surfactants with different chain lengths were used to examine the surfactant-polymer ...
Emulsions are metastable systems typically formed in the presence of surfactant molecules, amphiphilic polymers, or solid particles, as a mixture of two mutually immiscible liquids, one of which is dispersed as very small droplets in the other. These dispersions are unwanted occurrences in some areas, like those formed during crude oil production, but are also put into many other useful applications in the oil and gas industry, food industry, and construction industry, among others. These emulsions form when two immiscible liquids come together in the presence of an emulsifying agent and sufficient agitation strong enough to disperse one of the liquids in the other. Thermodynamically, these emulsions are unstable and thus would separate into their individual phases when left alone. To be stabilized, surface-active agents (surfactants) or solids (that act in so many ways like surfactants) ought to be used. Like many commercially available products, several pharmaceutical products are usually supplied in
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A Niosome is a non-ionic surfactant-based Vesicle (biology and chemistry). Niosomes are formed mostly by non-ionic surfactant and cholesterol incorporation as an excipient. Other excipients can also be used. Niosomes have more penetrating capability than the previous preparations of emulsions. They are structurally similar to liposomes in having a bilayer, however, the materials used to prepare niosomes make them more stable. Niosomes are lamellar structures that are microscopic in size. They constitute of non-ionic surfactant of the alkyl or dialkyl polyglycerol ether class and cholesterol with subsequent hydration in aqueous media. The surfactant molecules tend to orient themselves in such a way that the hydrophilic ends of the non-ionic surfactant point outwards, while the hydrophobic ends face each other to form the bilayer. The figure in this article on Niosomes gives a better idea of the lamellar orientation of the surfactant molecules. Niosomes are osmotically active, chemically stable ...
The susceptibility of ethoxylated non-ionic surfactants to oxidation on exposure to air was investigated. Surfactants have a complex chemical composition and are widely used in a variety of applications for to their amphiphilic properties. Ethoxylated non-ionic surfactants are regarded by the producers to be stable at normal handling. However, ethoxylated surfactants are polyethers and as such susceptible to oxidation on exposure to air, which is theoretically discussed in literature. Hand eczema is a common occupational disease of which mom than half of the cases is considered to be caused by work with surfactants and water. Surfactants are known to cause skin irritation, but cases of allergic contact dermatitis have also been reported.. Some ethoxylated surfactants were handled at room temperature in a manner that imitated ordinary handling at work. All samples autoxidized and the structures of some of the components formed were identified with liquid chromatography (HPLC) and gas ...
The self-assembly of complex molecules containing water-attracting (hydrophilic) and water-repelling (hydrophobic) segments in water is important across many scientific disciplines. Surfactants are surface-active agents widely used in the chemical industry to control the interface between liquids or a solid and a liquid. Surfactants aggregate to give either spherical or cylindrical molecular structures with collapsed hydrophobic cores and hydrophilic outer surfaces when exposed to water. Similarly, proteins fold in three-dimensional structures with hydrophobic cores in the interior and hydrophilic groups in the exterior. In contrast, the molecular peptoid structures, a nature-inspired synthetic material, synthesized in this research at Lawrence Berkeley National Laboratory consist of hollow rings stacked to produce a tube. The key to verifying the formation of nanotubes is cryo-electron microscopy which imaged 50 of the nanotubes showing the diameter of each tube is relatively uniform along its ...
Abstract: Understanding the structure of polymer/surfactant mixtures at the air-water interface is of fundamental importance and also of relevance to a variety of practical applications. Here, the complexation between a neutral tardigrade comb co-polymer (consisting of a hydrophilic polyethylene glycol backbone with hydrophobic polyvinyl acetate grafts, PEG-g-PVAc) with an anionic surfactant (sodium dodecyl sulfate, SDS) at the air-water interface has been studied. Contrast-matched neutron reflectivity (NR) complemented by surface tension measurements allowed elucidation of the interfacial composition and structure of these mixed systems, as well as providing physical insights into the polymer/surfactant interactions at the air-water interface. For both polymer concentrations studied, below and above its critical aggregation concentration, cac, (0.2 cac and 2 cac, corresponding to 0.0002 wt% or 0.013 mM and 0.002 wt% or 0.13 mM respectively), we observed a synergistic cooperative behaviour at ...
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Cloud point is an important property to consider when evaluating surfactants for your formulation.. Cloud point is defined as the temperature above which a surfactant rich phase separates from an aqueous solution. This separation occurs when a nonionic surfactant, for instance, becomes insoluble due to increased heat, resulting in a cloudy or hazy dispersion in the solution. As heat and instability increases, the solution may undergo total phase separation.. It is generally understood that nonionic surfactants will perform most effectively when used at temperatures at or near their cloud point.. With this in mind, it is possible to manipulate the cloud point of a solution through the presence of other materials. More specifically, certain components can depress or increase the solutions cloud point. For example, the addition of a coupler or hydrotrope can increase the cloud point of a solution, whereas builders or other salts (electrolytes) will depress the cloud point temperature. In fact, ...
Manufacturer of Detergent Raw Material & Detergent Raw ...- detergent powder export from india ,Incepted in the year 1992, our company Blue Chem India is one of the pioneer Manufacturers and Exporters of Detergent Enzymes, Detergent Whitening And Softening Agents, Detergent Fragrance, Pigment Powders, and many more.HSN Code for Detergent Powder in India - Import Export DataHSN Code Product Description Import Data Export Data; 3402: Organic surface-active agents (other than soap), surface- active preparations, washing preparations (including auxiliary washing preparations) and cleaning preparations, whether or not containing soap, other than those of heading ...
RDCL Co., Ltd Myanmar - Top reliable distributor of ...- liby detergent address in myanmar ,RDCL offers a one stop comprehensive package of services that provides entire value chain for any prospective and existing partners from sourcing to after sale services for health and consumer products inclusive of cold chain . RDCL provides our partners with expertise , on the ground logistics and tailor made services based on on a comprehensive network and including the following services.Detergent GP , Food Industry , Amity InternationalDetergent GP. A highly concentrated aqueous blend based on alkaline salts, surface-active agents and sequestrants. It is specially formulated to give long lasting foam and to provide outstanding cleanliness of articles with economy of use in both hard and soft water environments ...
Stable microbicidal disinfectant compositions comprising a complex of a halogen, a nonionic surface-active agent, and an -onium salt of an alkyl amine characterized by a negative reaction to standard tests for free halogen, no loss of halogen when boiled in an aqueous solution, and having microbicidal activity.
In: XXII International Conference on Raman Spectroscopy. American Institute of Physics, Melville, USA, pp. 839-840. ISBN 9780735408180 ISSN 0094-243X (doi:10.1063/1.3482842) Vine, G.J., Chowdhry, B.Z. and Mitchell, J.C. (2005) Antimicrobial properties of surface-active agents by flow calorimetry. Journal of Pharmacy and Pharmacology, 57 (S1). S107-S107. ISSN 0022-3573 (Print), 2042-7158 (Online) (doi:10.1211/002235705778248406) Seidel, J., Pinkrah, V.T., Mitchell, J.C., Chowdhry, B.Z. and Snowden, M.J. (2004) Isothermal titration calorimetric studies of the acid-base properties of poly (N-isopropylacrylamide-co-4-vinylpyridine) cationic polyelectrolyte colloidal microgels. Thermochimica Acta, 414 (1). pp. 47-52. ISSN 0040-6031 (doi:10.1016/j.tca.2003.11.012) Pinkrah, V.T., Snowden, M.J., Mitchell, J.C., Seidel, J., Chowdhry, B.Z. and Fern, G.R. (2003) Physicochemical properties of poly(N-isopropylacrylamide-co-4-vinylpyridine) cationic polyelectrolyte colloidal microgels. Langmuir, 19 (3). pp. ...
Contents of the 15 Chapter for This Biosurfactants Market Study:-. Chapter 1: to describe Global Biosurfactants Market Introduction, product scope, market overview, market opportunities, market risk, market driving force;. Chapter 2: to analyze the top manufacturers of Global Biosurfactants Market, with sales, revenue, and price of Global Biosurfactants Market, in 2016 and 2017;. Chapter 3: to display the competitive situation among the top manufacturers, with sales, revenue and market share in 2016 and 2017;. Chapter 4: to show the Global Biosurfactants market by regions, with sales, revenue and market share of Global Biosurfactants Market, for each region, from 2012 to 2017;. Chapter 5, 6, 7, 8 and 9: to analyze the key regions, with sales, revenue and market share by key countries in these regions;. Chapter 10 and 11: to show the market by type and application, with sales market share and growth rate by type, application, Methodology, Analyst Introduction, Data Source from 2012 to ...
In present investigation, B. subtilis and B. cereus was isolated and Identified from the petroleum contaminated site soil and identified by grams staining, motility and biochemical tests. After the isolation and identification, biosurfactant production from bacterial organisms was screened using mineral salt medium, by oil spreading, drop collapse and hemolysis test. From the blood agar plates, the biosurfactant producing bacterial culture were obtained and maintained as stock cultures. Organisms were inoculated into the mineral salt broth with petroleum oil, diesel oil, kerosene oil and crude oil as a carbon source for biosurfactant production. Biosurfactant was extracted by acid precipitation method. Biosurfactants production was optimized by using different pH, temperature, carbon and nitrogen sources. Emulsification activity of biosurfactant was analyzed. The extracted biosurfactant was characterized by using Thin Layer Chromatography (TLC). B.subtilis was able to produce the biosurfactant ...
The invention provides a liquid laundry detergent composition comprising: a) from 8 to 15% (by weight based on the total weight of the composition) of anionic surfactants selected from linear alkylbenzene sulfonates and mixtures thereof with alkyl ether sulfate; b) from 1 to 5% (by weight based on the total weight of the composition) of nonionic surfactants selected from C8 to C18 primary or secondary linear or branched alcohol ethoxylates with an average of from 2 to 40 moles of ethylene oxide per mole of alcohol; c) from 0.5 to 15% (by weight based on the total weight of the composition) of polymeric cleaning boosters selected from antiredeposition polymers, soil release polymers and mixtures thereof; in which the total amount of anionic surfactants (a) + nonionic surfactants (b) ranges from 9 to 20% (by weight based on the total weight of the composition); and in which the weight ratio of anionic surfactants (a) to nonionic surfactants (b) ranges from 3:1 to 12:1.
Most anionic and non-ionic surfactants are nontoxic, having LD50 comparable to sodium chloride. The toxicity of quaternary ammonium compounds, which are antibacterial and antifungal, varies. Dialkyldimethylammonium chlorides (DDAC, DSDMAC) used as fabric softeners have low LD50 (5 g/kg) and are essentially non-toxic, while the disinfectant alkylbenzyldimethylammonium chloride has an LD50 of 0.35 g/kg. Prolonged exposure to surfactants can irritate and damage the skin because surfactants disrupt the lipid membrane that protects skin and other cells. Skin irritancy generally increases in the series non-ionic, amphoteric, anionic, cationic surfactants.[3] Surfactants are routinely deposited in numerous ways on land and into water systems, whether as part of an intended process or as industrial and household waste.[5][6][7] Anionic surfactants can be found in soils as the result of sludge application, wastewater irrigation, and remediation processes. Relatively high concentrations of surfactants ...
TY - CONF. T1 - Biosurfactant production by lactic acid bacteria. AU - Prior, C.. AU - Speelmans, G.. AU - Weusthuis, R.A.. PY - 1998. Y1 - 1998. M3 - Poster. Y2 - 12 March 1998 through 13 March 1998. ER - ...
Granular detergent compositions containing an anionic surfactant, an ethoxylated surfactant solubility aid and a water-soluble neutral or alkaline salt are disclosed. The compositions are prepared by forming an intimate mixture of the anionic and ethoxylated surfactants and then agglomerating the mixture with the neutral or alkaline salt.
SAAPedia: Professional website of surfactants. Include: Anionic surfactants, Cationic surfactants, Non-ionic surfactants, Zwitterionic surfactants, Polymer Surfactants, Fluoro surfactants, Silicone surfactants, Biosurfactants, Natural surfactants, Special surfactants, Standard, Documents, etc.
Color bleed (the invasion of one color into another on the surface of the print medium) using ink-jet inks is alleviated by employing zwitterionic surfactants (ph-sensitive or pH-insensitive) or ionic or non-ionic amphiphiles. The inks of the invention comprise a vehicle and a cationic dye. The vehicle typically comprises a low viscosity, high boiling point solvent, one or two amphiphiles at concentrations above their critical micelle concentration (cmc), while the dye typically comprises any of the dyes commonly employed in ink-jet printing. The amount of surfactants/amphiphile is described in terms of its critical micelle concentration (cmc), which is a unique value for each amphiphile. Above the cmc, micelles form, which attract the dye molecule and thus control the color bleed. Below the cmc, there is no micelle formation, and thus no control of the color bleed.
The most important daily skin care is to clean our face.A good cleansing will make you fall in love with skin.. How to choose a good cleanser?. When purchase cleanser, ignore the brand factor, the main thing is to see the surface active agent. As for the smell (aroma), preservatives, more important is to look at personal preferences. Different surfactants builds cleansing products, will form a different sense of washing (at the same time the sense of washing will be affected by moisturizing ingredients, thickening ingredients and other effects) and cleanliness. Few cleansers are completely constructed with a single surfactant. Usually with several different surfactants to match up.. Soap-based cleanser. Soap-based cleanser is an anionic surfactant; soap-based cleanser is usually used fatty acids plus alkali ingredients to build cleanser products. Generally speaking, different fatty acids are slightly different after the formation of soap base. For example, the longer the carbon chain, the finer ...
The viscosity of anionic surfactant slurries is increased by admixing with such slurries an effective amount of a viscosity increasing additive selected from the group consisting of dialkyl ethers wherein the alkyl radicals of said ethers contain from 2 to 5 carbon atoms, alkoxyethoxyethanols wherein the alkyl radical contains from 2 to 6 carbon atoms, and tertiary amines wherein the alkyl radical contains from 2 to 4 carbon atoms.
Description: Compositions which contains a sulfur-containing anionic surfactant; e.g., sulfonates, sulfates, sulfosuccinates, isethionates, sarcosinates, taurates, etc ...
The effect of nonionic surfactants on the cationic conjugated polymer (CCP), poly{9,9-bis[6-(N,N-trimethylammonium)hexyl]fluorene-co 1,4-phenylene} iodide 1, has been investigated. It is shown that the CCP in various solvents exists in three phases: isolated polymer chains, polymer aggregate, and variable size clusters (partially dissolved polymer). It is shown that nonionic surfactants enhance the photoluminescence (PL) quantum yield of the CCP in water by breakup of polymer aggregates, which eliminates the nonemissive interchain quenching with aggregates and increases surface-to-volume ratio of the CCP. Furthermore, the surfactants reduce quenching by incorporation of the CCP into aggregates or binary micelles. Surfactant also reduces the polar interaction strength between CCP and water and enhances CCP quenching by the counterions (iodine) by ion pairing effect. The dynamics of the interactions are complex and reveal that the surfactant induces rapid increase in the PL which imply that the ...
1. U.v. difference spectra show that the anionic surfactant sodium n-dodecyl sulphate unfolds ribonuclease A at pH7.3 and 10.3, but that the cationic surfactant n-dodecyltrimethylammonium bromide does not affect the conformation of the enzyme. 2. Equilibrium-dialysis experiments show that sodium n-dodecyl sulphate binds to ribonuclease A, but no binding of n-dodecyltrimethylammonium bromide could be detected at pH7.3. 3. The enzymic activity of ribonuclease A is unaffected by n-dodecyltrimethylammonium bromide up to a concentration of 0.03m at 25°C. 4. Ultracentrifuge studies support the conclusion that n-dodecyltrimethylammonium bromide does not interact significantly with ribonuclease A. 5. The enthalpy change as measured by microcalorimetry on binding of sodium n-dodecyl sulphate to ribonuclease A is consistent with an exothermic enthalpy of binding occurring simultaneously with an endothermic enthalpy of chain unfolding.. ...
To investigate whether nitric oxide (NO) is involved in surfactant-induced systemic and pulmonary vasodilatation in newborn piglets with surfactant deficiency, 2-6-d-old piglets were subjected to repeated saline lung lavages. They were then randomly
Biosurfactants have recently been recognized as important biotechnological products in biomedical, cosmeceutical, and potential food applications owing to their specificity, low toxicity, and biodegradability. In recent years, increasing concern has been placed on the environmental impacts of chemical surfactants. Biosurfactants (BSs) produced by microorganisms such as yeast, fungi, and bacteria are thought to be efficient replacers of chemically synthetic surfactants, and BSs have been developed as suitable alternatives for antimicrobial and biomedical agents. This study aimed to develop of high throughput screening (HTS) method for large amounts of potential candidates. In HTS steps, we developed rapid and simple screening methods for BS-producing yeast to design processes for the production of BS. During the screening for BS-producing yeast, we isolated many BS-producing yeasts which were identified as Aureobasidium pullulans, from wild flowers. A. pullulans is ubiquitous yeast found in ...
Author: Schomaecker, R. et al.; Genre: Journal Article; Published in Print: 1994-04-07; Title: Effect of ionic surfactants on nonionic bilayers: bending elasticity of weakly charged membranes
Self-emulsifying oil/surfactant mixtures can be incorporated into pellets that have the advantages of the oral administration of both microemulsions and a multiple-unit dosage form. size of the reconstituted microemulsions was comparable to that in the wetting microemulsions. The less hydrophilic ELP with a double bond in the fatty acid showed weaker H-bonding and greater microemulsion reconstitution. Purified ELP gave greater reconstitution than the unpurified grade. Thus, the work demonstrates that the choice of type and quantity of the surfactant used in the formulation NVP-BHG712 of microemulsions made up of pellets has an important influence on their production and performance. in dogs as if they were the microemulsion liquid itself (2). It has also been found that the relative quantities of SES and water, as well as the fraction of oil and surfactant in the dry pellets affect the amount of liquid and SES that could be incorporated into MCC, the extrusion pressure, and the properties of the ...
Any type of surfactant has a hydrophilic-lipophilic balance number (HLB number) of different. There are several methods for determining the HLB number, with ohysical properties of surfactant (solubility cloud point and interfacial tension), CMC methods and by thermodynamics properties (Free energy Gibbs). This paper proposes to determined HLB numbers from interfelation methods. The result of study indicated that the CMC method described by Hair and Moulik espesially for nonionic surfactant. The application of exess Gibbs free energy and by implication activity coefficient provides the ability to predict the behavior of surfactants in multi component mixtures of different concentration. Determination of HLB number by solubility and cloud point parameter is spesific for anionic and nonionic surfactant but this methods not available for cationic surfactants. ...
TY - JOUR. T1 - Adsorption of ionic surfactants on variable-charge surfaces. 1. Charge effects and structure of the adsorbed layer.. AU - Böhmer, M.R.. AU - Koopal, L.K.. PY - 1992. Y1 - 1992. U2 - 10.1021/la00047a014. DO - 10.1021/la00047a014. M3 - Article. VL - 8. SP - 2649. EP - 2659. JO - Langmuir. JF - Langmuir. SN - 0743-7463. ER - ...
Biosurfactants compounds are produced by microorganisms. These isolates reduced surface tension both in aqueous solutions and hydrocarbon mixtures. The objective of this study was to isolate and identify the biosurfactant producing bacteria from petrochemical soil wastes. Among the 16 isolates, two strains (BPB7: Pseudomonas sp and BPB13: Serratia sp) were shown high salt tolerance and successful production of biosurfactant in a range of pH 6.5 to 7.5 and at room temperature. To confirm the ability of isolates in biosurfactant production, different screening methods including hemolysis, emulsification, penetration, oil spreading test BATH assay and salt aggregation assay were assessed. This study was suggested that these two bacteria having potential for microbial enhanced oil recovery and also possessing Anti microbial and Anti adhesive property. The rich amount of biosurfactant compound like, glycolipid was found in these two strains. (BPB7 and BPB13 ...
Amphiphilic dicationic surfactants, known as gemini surfactants, are currently studied for gene delivery purposes. The gemini surfactant molecule is composed of two hydrophilic
A. Lipid Order Parameter in the Presence of Amphiphilic Molecules The outer lipid membrane surface of eukaryotic cells is generally uncharged. Amphiphilic, water-soluble molecules such as local anesthetics, viral or antibiotic pep-tides, or peptide toxins therefore partition into the bilayer […]
The present invention discloses various embodiments and examples of a thickened aqueous abrasive cleanser capable of maintaining a smoothly flowable or plastic consistency over long periods of time. The cleanser is characterized by the ability to stably suspend abrasives while exhibiting excellent shelf stability over long periods of time with substantially no syneresis and being suitable for use where environmental requirements prevent the use of phosphates. This cleaner has the following ingredients: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron; (b) an electrolyte/buffer; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant or mixed surfactant; (d) a bleach; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring
Nonionic surfactants are often used in laundry and dishwasher detergents as a cleaning agent. They are also used in cosmetics as emulsifiers, conditioning agents and solubilizing agents and to boost...
Surface treatment compositions comprising certain cationic polymer(s), anionic surfactant, one or more shielding salts and hydrophobic association disruptor. The surface treatment compositions comprise at least about 6 % by weight of cationic polymer, at least about 6% by weight anionic surfactant, and at least about 4 % by weight of the shielding salt. The weight ratio of anionic surfactant to cationic polymer is between about 0.5:1 and about 4:1. The composition may also have a weight ratio of shielding salt to cationic polymer of between about 0.3:1 and about 3:1.
The interaction of anionic surfactants sodium dodecylbenzenesulphonate (SDBS) and sodium bis (2-ethyl-1-hexylsulfosuccinate) (AOT) with the water treatment protein extracted from Moringa oleifera seeds has been investigated by surface tension measurements. The results were compared with previously reported studies using surface tension and zeta potential measurements of the same protein with an anionic surfactant sodium dodecylsulphate. There is a strong electrostatic interaction between the protein and the surfactants characterized by a local maximum at intermediate surfactant concentration. This surfactant concentration depends on the protein concentration and corresponds to the surfactant concentration at the point of charge reversal (zeta potential = 0 mV). The number of surfactant molecules required to neutralize the positive charges on the protein was found to be 8 per protein molecule ...
The interaction of anionic surfactants sodium dodecylbenzenesulphonate (SDBS) and sodium bis (2-ethyl-1-hexylsulfosuccinate) (AOT) with the water treatment protein extracted from Moringa oleifera seeds has been investigated by surface tension measurements. The results were compared with previously reported studies using surface tension and zeta potential measurements of the same protein with an anionic surfactant sodium dodecylsulphate. There is a strong electrostatic interaction between the protein and the surfactants characterized by a local maximum at intermediate surfactant concentration. This surfactant concentration depends on the protein concentration and corresponds to the surfactant concentration at the point of charge reversal (zeta potential = 0 mV). The number of surfactant molecules required to neutralize the positive charges on the protein was found to be 8 per protein molecule ...
ZAREI, Ali Reza; GHOLAMIAN, Forouzan y CHALAVI, Soheila. Micelle-mediated extraction and cloud point pre-concentration for the spectrophotometric determination of phenol in water samples. S.Afr.j.chem. (Online) [online]. 2011, vol.64, pp.158-162. ISSN 1996-840X.. In this paper, a cloud point extraction method for the determination of trace amounts of phenol by spectrophotometry is described. The method is based on the colour reaction of phenol with diazotized p-nitroanilinean alkaline media and the cloud point extraction of azo dye product using of nonionic surfactant Triton X-114. The effects of reaction and extraction parameters were studied and optimum parameters were established. The calibration graph was linear in the range of 2.0-400 ng mL-1 of phenol. Detection limit based on three times the standard deviation of the blank (3Sb) was 1.0 ng mL-1 and the relative standard deviation (RSD) for 50 ng mL-1 of phenol was 1.73 % (n = 10). The proposed method was applied for the determination of ...
Market Research Reports Search Engine (MRRSE) has been serving as an active source to cater intelligent research report to enlighten both readers and investors. This research study titled Sodium Lauryl Sulfate Market. Request a Free Sample Report @ https://www.mrrse.com/sample/984. Increasing demand for sodium lauryl sulfate (SLS), sodium laureth ether sulfate (SLES) and linear alkylbenzene sulfonate (LAS) from detergents & cleaners and personal care industries is expected to drive the global SLS, SLES & LAS market in the next five years. However, the adverse effect of SLS and SLES on human skin coupled with fluctuation in prices of linear alkylbenzene sulfonate is anticipated to hamper market growth. Emerging applications such as paints & coatings and oilfield chemicals are estimated to offer immense opportunities for players in the market. SLS, SLES and LAS are the major forms of anionic surfactants. However, LAS accounts for nearly 40% of the global anionic surfactants market.. The report ...
An oral composition for oral cleansing, breath freshening, and anti-microbial benefits includes Magnolia Bark Extract in combination with a surface active agent. The effectiveness of Magnolia Bark Extract in inhibiting biofilm formation in the oral cavity is increased by a synergistic combination of the Magnolia Bark Extract with a surface active agent in an oral cavity delivery agent, such as chewing gum, a confectionary, a lozenge, a compressed tablet, and an edible film.
Cetyltrimethylammonium Bromide found in: Cetyltrimethylammonium Bromide, Cetyltrimethylammonium Bromide, CTAB (Cetyltrimethylammonium bromide),..
A simple and rapid screening method for spectrophotometric determination of salbutamol based on mixed micelle-cloud point extraction (MM-CPE) coupled to derivatization with 4-aminoantipyrine reagent has been presented. A MM-CPE has been developed for the analysis of salbutamol in wastewater, pig feed and pork samples using Triton X-114 (TX-114) and cetyl trimethylammonium bromide (CTAB) as the mixed micellar extractant. The optimum MM-CPE conditions were: 10 mmol L-1 phosphate buffer pH 6.4, 5 mmol L-1 CTAB, 0.25% (w/v) TX-114, 10% (w/v) sodium chloride and 6 min equilibration time at 30 °C. And the optimum for derivatization were: 0.05 mol L-1 4-aminoantipyrine, 0.12 mol L-1 potassium hexacyanoferrate (III), 0.05 mol L-1 sodium carbonate and 1 min reaction time at room temperature. Under the selected condition, the proposed method gave linear calibrations in the range of 0.05 - 10 mg L-1. Limit of detection and limit of quantitation were 0.01 mg L-1 and 0.03 mg L-1, respectively. The proposed ...
Global Fatty Acid Ethoxylate Market 2017 Research Report proffers an acknowledged and extensive analysis of the immediate state of Fatty Acid Ethoxylate Market 2017.. In the first part, Fatty Acid Ethoxylate Industry study deals with the complete overview of the Fatty Acid Ethoxylate market, which consists of definitions, a wide range of statements, kinds and an entire Fatty Acid Ethoxylate industry chain structure. The global Fatty Acid Ethoxylate business analysis moreover consists of the ambitious landscape of Fatty Acid Ethoxylate industry, Fatty Acid Ethoxylate market expansion history and important development drifts presented by Fatty Acid Ethoxylate industry. Fatty Acid Ethoxylate trade introduces more extensive guidelines for a high growth potential industries professional survey with industry analysis. High Use of Fatty Acid Ethoxylate in Chemicals and Materials Industry Driving the Market Growth of Fatty Acid Ethoxylate.. To Get Sample Pages of Report here: ...
Frog sciatic nerves were excised and treated in a Ringers solution containing the surface-active agent, cetyltrimethylammonium bromide (CTMB). Such CTMB-treated nerves were compared to normal, untreated nerves with respect to their susceptibility to conduction block produced by six lipid-insoluble quaternary ammonium ions; the CTMB-treated nerves were rendered especially susceptible to rapid, reversible conduction block. A possible mechanism of CTMB action is proposed, involving chemo-dissection of permeability barriers which normally surround the individual axons. The findings that acetylcholine, curare, etc. can produce reversible, axonal conduction block in CTMB-treated nerves are not inconsistent with a theory of cholinergic impulse conduction.. ...
ASTM-D1768 Standard Test Method for Sodium Alkylbenzene Sulfonate in Synthetic Detergents by Ultraviolet Absorption - sodium alkylbenzene sulfonate; synthetic detergents; ultraviolet absorption ;; ICS Number Code 71.100.40 (Surface active agents)
Business Directory for Sodium Lauryl Sulfate Suppliers in Pune - Get contact details of Sodium Lauryl Sulfate Manufacturers, Wholesale Sodium Lauryl Sulfate Exporters, Best Sodium Lauryl Sulfate Traders & Distributors Across the Pune.
Benzalkonium Chloride - CAS 8001-54-5 - Calbiochem CAS 8001-54-5 Cationic surface-active agent and germicide. Its effects are potentiated in the presence of di-n-butyl esters, such as diisobutyladipate. M.W. ~360. - Find MSDS or SDS, a COA, data sheets and more information.
Several microorganisms are currently being used as production platform for glycolipid biosurfactants, providing a greener alternative to chemical biosurfac
In this work, results from atomistic molecular dynamics studies investigating the effect of surfactant concentration on the transport properties of bulk surfactant aqueous solutions, focusing on the anionic surfactant sodium dodecyl sulfate (SDS), are reported. The surfactant self-diffusion and the thermal conductivity of bulk aqueous SDS solutions were computed at a range of concentrations at room and boiling temperatures. Additionally, MP2f (Akin-Ojo et al., 2008, Developing Ab Initio Quality Force Fields From Condensed Phase Quantum-Mechanics/Molecular-Mechanics Calculations Through the Adaptive Force Matching Method, J. Phys. Chem., 129, p. 064108), one of a new generation water potentials is assessed for its suitability in reproducing the transport and thermal properties of bulk water. The thermal conductivity of MP2f water model was found to be: 0.64 W/(m⋅K) at 298 K and 0.66 W/(m⋅K) at 373 K, in much better agreement with the experimental values compared to both the rigid and the ...
eindiabusiness - Sodium Lauryl Sulfate Sourcing, Sodium Lauryl Sulfate Suppliers, Sodium Lauryl Sulfate Manufacturers, Sodium Lauryl Sulfate Wholesalers
Magnesium Dodecyl Sulfate - Surfactant - SAAPedia - SAAPedia(Surfactant.TOP),Surfactant,Anionic surfactants, Cationic surfactants, Non-ionic surfactants, Zwitterionic surfactants, Polymer Surfactants, Fluoro surfactants, Silicone surfactants, Biosurfactants, Natural surfactants, Special surfactants - Page1
Fatty acids, C16-18, esters with ethylene glycol - Surfactant - SAAPedia - SAAPedia(Surfactant.TOP),Surfactant,Anionic surfactants, Cationic surfactants, Non-ionic surfactants, Zwitterionic surfactants, Polymer Surfactants, Fluoro surfactants, Silicone surfactants, Biosurfactants, Natural surfactants, Special surfactants - Page1
Get Information of Alkylbenzene Sulfonate Manufacturers, Suppliers, Dealers, Exporters, Traders, Producers, Wholesalers, Alkylbenzene Sulfonate Companies in Aurangabad, India
These compounds are nitrogenous cationic surface active agents. Benzalkonium chloride is a mixture of alkylbenzyl ... Its active ingredients include quaternary ammonium compounds from the family of benzalkonium chlorides and ...
Griffin, W. C. Classification of Surface-Active Agents By. J. Soc. Cosmet. Chem. 1949, 1, 311-326. Ontiveros, Jesús F.; Pierlot ... because the deprotonated fatty acid is highly surface active while the protonated fatty acid is not. This state of protonation ... Due to its surface property, sucrose esters are used in pharmaceutical research as a stabilizer or a surfactant on vesicles for ... E473 is allowed for application on fruit surfaces in the EU at whatever level is needed to achieve a technical effect ('quantum ...
... protecting the surface substrate. Pentaerythritol is one of the most common main active components in intumescent paints and ... It acts as a carbon donor and together with an acid donor, most commonly ammonium polyphosphate (APP), and a blowing agent, ... The polymer cross-linking agent pentaerythritol tetraacrylate. Pentaerythritol is used as a fire retardant, such as in plastics ...
The word surfactant is a blend of surface-active agent.[1] Agents that increase surface tension are surface active in the ... Surface rheology, adsorption. Langmuir trough, ellipsometry, Xray, surface rheology. Films. Frankel's law. Surface tension, ... Dynamic surface tensions, i.e. surface tension as a function of time, can be obtained by the maximum bubble pressure apparatus ... Surface rheology can be characterized by the oscillating drop method or shear surface rheometers such as double-cone, double- ...
An appropriate "surface active agent" (or "surfactant") can increase the kinetic stability of an emulsion so that the size of ... One class of emulsifiers is known as "surface active agents", or surfactants. Emulsifiers are compounds that typically have a ... whereas other agents such as aqueous film-forming foam need cover only the surface of the fuel to achieve vapor mitigation.[23] ... "Colloids and Surfaces A: Physicochemical and Engineering Aspects. 192 (1): 5-13. doi:10.1016/S0927-7757(01)00711-7. ISSN 0927- ...
Surfactants work by reducing surface tension between two liquids or a liquid and a solid. Biosurfactants, surface-active agents ...
... surface-active agents). Tubercle, Volume 50, Issue 3, pp. 305-312. DOI: 10.1016/0041-3879(69)90056-7. Muftic MK, and Atia IM ( ... US Patent US 3632584 A Albrecht R, Muftic MK, Schröder E (1973). 5-nitro-furfurylidene antimicrobic agents. US Patent US ... Muftic MK (1958). Advances in the pharmacological study of cerase-A new anti-tuberculous agent. British Journal of Tuberculosis ... supposedly because his killers suspected him of being a Mossad agent. Books Mahmoud K. Muftic: Researches on the Aura Phenomena ...
... effect of nonionic surface-active agents". Il Farmaco; Edizione Pratica. 41 (5): 177-83. PMID 3487466. Burgos A, Busquier MP, ...
These methods include cosolvency, hydrotropism, complexation, ionization, and using surface active agents. The most pervasive ... Due to toxicological concerns, the main agents used for remediation are aqueous solutions of 1-5% alcohols by volume, which can ... and surface tension. Instead, they find that Hildebrand's solubility parameter, Et(30), and interfacial tension correlate more ... surface tension, dielectric constant, interfacial tension, and others. Using naphthalene as a representative case of ...
The word surfactant is short for surface active agent. Surfactants are compounds that lower the surface tension of a liquid, ... Surfactants lower the surface tension (γ) and thus gibbs energy is gained from demulsification. This slows the process of ... The addition of surfactants to paint also allow the paint to coat a surface more easily because surfactants increase the ... Fluorocarbons help to lower the surface tension of water and other solvents because of their lipophobic nature even in harsh ...
It can also be used as a surface active agent. It is soluble in aqua regia and is formed from a mass of metallic particles. It ... The platinized platinum has a true surface area much higher than the geometrical surface area of the electrode and, therefore, ... Before platinization, the platinum surface is cleaned by immersion in aqua regia (50% solution, i.e., 3 volumes of 12 mol/kg of ... Specific surface area: 40~60m2/g Particle size: < 10 nm Dangerous code: F Dangerous level: R11 Security level: S16 UN Numbers: ...
Enzymes and fluorescent whitening agents are added into detergents as auxiliary agents. Surfactants are surface active agents, ... Several common detergent ingredients are surfactants, builders, bleach-active compounds and auxiliary agents. The surfactants ... Wastewater comes out of the laundry process with additional energy (heat), lint, soil, dyes, finishing agents, and other ... With the lipophilic tails, surfactants are biologically active. Anionic surfactants have the ability of binding to bioactive ...
"Further Studies on the Influence of Surface Active Agents on Decalcification of the Enamel Surface". Journal of Dental Research ... The amine fluorides are thus available as an active agent for a longer period. Amine fluorides have a slightly acidic pH. For ... Due to their surface activity the amine fluorides are rapidly dispersed in the oral cavity and wet all surfaces. In contrast, ... For this reason, they act like surfactants, reducing the surface tension of saliva, and forming a homogeneous film on all oral ...
An appropriate "surface active agent" (or "surfactant") can increase the kinetic stability of an emulsion so that the size of ... Emulsifiers are part of a broader group of compounds known as surfactants, or "surface active agents". Surfactants (emulsifiers ... they are not surface-active substances, yet they are commonly included in the group of ingredients called "emulsifying agents ... whereas other agents such as aqueous film-forming foam need cover only the surface of the fuel to achieve vapor mitigation. ...
"Negative Staining of Phospholipids and Their Structural Modification by Surface-Active Agents As Observed in the Electron ... Refinement of the lipid composition to tune fluidity, surface charge density, and surface hydration resulted in vesicles that ... the two surfaces must become at least partially dehydrated, as the bound surface water normally present causes bilayers to ... When they compared the area of the monolayer to the surface area of the cells, they found a ratio of two to one. Later analyses ...
"Negative Staining of Phospholipids and Their Structural Modification by Surface-Active Agents As Observed in the Electron ...
"Negative Staining of Phospholipids and Their Structural Modification by Surface-Active Agents As Observed in the Electron ... A liposome design may employ surface ligands for attaching to unhealthy tissue. The major types of liposomes are the ... A recent study has shown that liposomes can be used as antibacterial nanoparticles for food contact surfaces. Azotosome Lamella ... Liposomes are also used as outer shells of some microbubble contrast agents used in contrast-enhanced ultrasound. Until ...
"Negative staining of phospholipids and their structural modification by surface-active agents as observed in the electron ... In this method, the aperture starts out above the water surface, completely separating the two fluid chambers. On the surface ... Another advantage of the supported bilayer is that, because it is on a flat hard surface, it is amenable to a number of ... These studies would be difficult or impossible without the use of supported bilayers since the surface of a cell or vesicle is ...
The very large active surface makes synthetic magnesium silicate useful for a wide variety of applications: purifying adsorbent ... Various national and international regulations allow use of this material as an anti-caking agent in a wide variety of powdered ... The particles are usually porous, and the BET surface area can range from less than 100 m2/g to several hundred m2/g. ... The most common use for Food Grade synthetic magnesium silicate is as an active filter aid for adsorption of color, free fatty ...
Every resin finish recipe contains surfactants as emulsifiers, wetting agents and stabilizers. these surface-active substances ... The dyes are finely ground in the presence of a dispersing agent and sold as a paste, or spray-dried and sold as a powder. ... It is the application of color in the form of a paste or ink to the surface of a fabric, in a predetermined pattern. Printing ... Fresh water: Most water used in the textile industry is from deep well water which is found 800 ft below the surface level. The ...
Surfactant-enhanced recovery injects surfactants (surface-active agents that are primary ingredient in soap and detergent) into ... In this process ground water is pumped to the surface and is coupled with either biological or chemical treatments to remove ... In general, the process involves addition of agent to an aqueous waste stream in a stirred reaction vessel, either batchwise or ... Most metals can be converted to insoluble compounds by chemical reactions between the agent and the dissolved metal ions. The ...
In marshmallows, proteins are the main surface-active agents responsible for the formation, and stabilization of the dispersed ... Due to their structure, surface-active molecules gather at the surface area of a portion of (water-based) liquid. A portion of ... Vegans and vegetarians avoid gelatin, but there are versions which use a substitute non-animal gelling agent such as agar. In ... Marshmallows consist of four ingredients: sugar, water, air, and a whipping agent/aerator (usually a protein). The type of ...
Generally a defoamer is insoluble in the foaming medium and has surface active properties. An essential feature of a defoamer ... Antifoaming agents are also sold commercially to relieve bloating. A familiar example is the drug Simethicone, which is the ... Surface foam may cause problems with liquid levels and give overflow leading to pools of oils around the equipment which is a ... active ingredient in drugs such as Maalox, Mylanta, and Gas-X.[citation needed] Foam Foaming agent Rainer Höfer, Franz Jost, ...
One of the most promising supports is graphene for its porosity, electronic properties, thermal stability and active surface ... they can be considered as solid capping agents. Supports also allow the nanoparticles to be easily recycled. ... One popular method for increasing surface area involves distributing the catalyst over the surface of the support. The support ... In chemistry, a catalyst support is the material, usually a solid with a high surface area, to which a catalyst is affixed. The ...
He submitted his doctoral thesis (1959) on surface-active agents from glycerides and their fascinating micellar world in ... "LM 1". select research publications in different areas (including those before MIT era): Surface Chemistry (general) J Phy Chem ... He established the Materials Separation and Surface Chemistry laboratories. Biswas enjoyed the reputation of a dedicated ... physical chemistry of surfaces (PL de Bruyn and Alan Michaels) and even archaeometallurgy (the famous CS Smith) and history of ...
It is also being studied as a high surface area conducting agent in lithium-sulfur battery cathodes. The functional groups on ... graphene oxide can serve as sites for chemical modification and immobilization of active species. This approach allows for the ... It is also possible to modify the surface of graphene oxide to change its properties. Graphene oxide has unique surface ... They found a correlation between the surface chemical composition, the surface free energy and its polar and dispersive ...
Sortases are membrane anchored enzyme that sort these surface proteins onto the bacterial cell surface and anchor them to the ... Sortase B, is a 246 amino acids polypeptide with putative N-terminal membrane anchor and an active site cysteine located within ... Cossart P, Jonquières R (May 2000). "Sortase, a universal target for therapeutic agents against gram-positive bacteria?". ... The sortase B enzyme catalyzes a cell wall sorting reaction with a surface protein where a signal NXTN motif is cleaved. In the ...
These new micromotors are composed of a photoactive photocatalyst outer/surface layer that often has active metal nanoparticles ... a titanium dioxide surface layer and a strong reducing agent inner layer or coating. The interaction of the two layers under ... and chemical warfare agents, such as organaphosphate nerve agents- a class of acetylcholinesterase inhibitors. Therefore, ... Typical Janus motors usually have a size of about 30μm with a small 2μm opening on the outer (active) layer. This leads to the ...
A nanocomposite coating process could improve food packaging by placing anti-microbial agents directly on the surface of the ... On PEN's list are three foods-a brand of canola cooking oil called Canola Active Oil, a tea called Nanotea and a chocolate diet ... Surfaces of soldiers' uniforms and surfaces of military vehicle are a few surfaces that can be designed in this way. By ... A nanocomposite coating process could improve food packaging by placing anti-microbial agents directly on the surface of the ...
Hormonal agents[edit]. In women, the use of combined birth control pills can improve acne.[100] These medications contain an ... Ablative lasers (such as CO2 and fractional types) have also been used to treat active acne and its scars. When ablative lasers ... the skin cells that have died come up to the surface and exit the pore of the hair follicle.[10] In people with acne, the ... "Antimicrobial Agents and Chemotherapy. 63 (1). doi:10.1128/AAC.01297-18. PMC 6325184. PMID 30397052.. ...
ocrelizumab, humanized (90%-95% human) B cell-depleting agent.. *ofatumumab (HuMax-CD20) a fully human B cell-depleting agent.[ ... The antibody binds to the cell surface protein CD20. CD20 is widely expressed on B cells, from early pre-B cells to later in ... it is licensed for use in combination with MTX in patients with severe active RA who have had an inadequate response to one or ... Rituximab is a chimeric monoclonal antibody against the protein CD20, which is primarily found on the surface of immune system ...
... that have aggressive highly active MS, "in the absence of chronic treatment with disease-modifying agents".[66] ... Δ32 homozygous individual with two genetic copies of a rare variant of a cell surface receptor. This genetic trait confers ... The immunosuppressive agents employed in allogeneic transplants for the prevention or treatment of graft-versus-host disease ... while requiring high doses of immunosuppressive agents in the early stages of treatment, these doses are less than for ...
The spread of B. burgdorferi is aided by the attachment of the host protease plasmin to the surface of the spirochete.[87] ... Outdoor workers should be most careful to protect themselves in the late spring and summer when young ticks are most active.[ ... After the identification of B. burgdorferi as the causative agent of Lyme disease, antibiotics were selected for testing, ... Within the tick midgut, the Borrelia's outer surface protein A (OspA) binds to the tick receptor for OspA, known as TROSPA. ...
... and can help smooth the surface of other metals.[200][201] Being a strong reducing agent, it is often used to reduce many other ... and TlI has an unusual structure because of the presence of the stereochemically active inert pair in thallium.[179] ... When the repulsive forces within the liquid metal surface exceeds the forces of the surface tension, it vigorously explodes.[ ... Water molecules ionise the bare metallic surface of the liquid metal, leaving a positively charged metal surface and negatively ...
Through Clovio and Orsini, El Greco met Benito Arias Montano, a Spanish humanist and agent of Philip; Pedro Chacón, a clergyman ... where around two hundred painters were active during the 16th century, and had organized a painters' guild, based on the ... a reciprocal relationship is developed between the two which completely unifies the painting surface. This interweaving would ...
Some of the chemical properties of activated carbon have been attributed to presence of the surface active carbon double bond.[ ... Pradhan B.K.; Sandle N.K. (1999). "Effect of different oxidizing agent treatments on the surface properties of activated ... Frequently, this parameter is useful in evaluating a series of active carbons for their rates of adsorption. Given two active ... The surface of conventional activated carbon is reactive, capable of oxidation by atmospheric oxygen and oxygen plasma[26][27][ ...
... or the wettability and thermal conductivity of the surface will be lost with active material still remaining deeper within the ... in the gaseous phase and use H2 as a reducing agent. This synthesis route can be employed at low temperatures and produces thin ... SiC can react with the surface oxide layer in order to provide diboride surfaces with higher energy: adding 5-30 vol% SiC has ... The surfaces of hypersonic vehicles experience extreme temperatures in excess of 2500 °C while also being exposed to high- ...
The "actish feel" of some intentional actions do not "constitute that event's activeness, or the agent's exercise of active ... In particular, the supplementary motor complex on the medial surface of the frontal lobe appears to activate prior to primary ... The agent is assumed power to intervene in the physical world.[74][75][76][77][78][79][80][81] Agent (substance)-causal ... Agent/substance-causal theories[edit]. Agent/substance-causal accounts of incompatibilist free will rely upon substance dualism ...
... and Domino-aware adds-ins and agents are also executable programs, but they are designed to extend the reach of a ... All of the security in IBM Notes and Domino is independent of the server OS or Active Directory. Optionally, the IBM Notes ... This allows IBM Domino applications to be better surfaced to browser clients, though the UX and business logic must be ... One example that was corrected in Release 8.5: In earlier versions the out-of-office agent needed to be manually enabled when ...
Henriques AO, Moran CP Jr (2007). "Structure, assembly, and function of the spore surface layers". Annu Rev Microbiol. 61: 555- ... The core also contains normal cell structures, such as ribosomes and other enzymes, but is not metabolically active. ... However, sterilant alkylating agents such as ethylene oxide (ETO), and 10% bleach are effective against endospores. To kill ... Bacillus subtilis spores are useful for the expression of recombinant proteins and in particular for the surface display of ...
In the standard version of SDS such partial function evaluations are binary, resulting in each agent becoming active or ... is a global optimization algorithm for dealing with problems in which a best solution can be represented as a point or surface ... The agents follow very simple rules, and although there is no centralized control structure dictating how individual agents ... SDS is an agent-based probabilistic global search and optimization technique best suited to problems where the objective ...
Herbal fish-stupefying agents are proven means of fishing, which do not kill fish like chemical poisons. Many of these plants ... This would kill or incapacitate the fish, which could be gathered easily from the surface of the water. The Lassik, Luiseño, ... If stunned fish were immediately reintroduced into clean water, they would become active. To get good results from the Olax (or ... Apart from its use as fish-stupefying agent, the stem of this plant is used for brushing teeth, leaves for storing grains, and ...
Many of the active substances in black tea do not develop at temperatures lower than 90 °C (194 °F).[91] As a result, black tea ... Either through directly adding flavouring agents, such as bergamot (found in Earl Grey), vanilla, and spearmint. Or, because ... and your lips will be coated with a sticky scum that forms across the surface, which if left undisturbed will become a leathery ... 2010). "Oxidative stress and Alzheimer's disease: dietary polyphenols as potential therapeutic agents". Expert Rev Neurother. ...
Combining a pharmaceutically active cation with a pharmaceutically active anion leads to a Dual Active ionic liquid in which ... Dispersing agent[edit]. ILs can act as dispersing agents in paints to enhance finish, appearance and drying properties.[53] ILs ... Such a liquid base would be covered by a thin metallic film that forms the reflective surface. Low volatility is important in ... Ionic Liquid Salt Forms of Active Pharmaceutical Ingredients: A Position Paper". Pharmaceutical Research. 27 (4): 521-526. doi: ...
A dispersant or a dispersing agent or a plasticizer or a superplasticizer is either a non-surface active polymer or a surface- ... Surface coating[edit]. In order to provide optimal performance, pigment particles must act independently of each other in the ... In the process industry dispersing agents or plasticizers are added to process liquids to prevent unwanted deposits by keeping ... Then effectively spread throughout a larger volume of water than the surface from where the oil was dispersed. They can also ...
These agents served various functions, the simplest being a reducing agent, which prevented oxides from forming on the surface ... Activity - the ability to dissolve existing oxides on the metal surface and promote wetting with solder. Highly active fluxes ... Mechanical rubbing of a heated surface with molten solder can be used for coating the surface. Both surfaces to be joined can ... The surface of the tin-based solder is coated predominantly with tin oxides; even in alloys the surface layer tends to become ...
While the enzyme can exist as an inactive monomer or tetramer, it is biologically active as a dimer of two identical subunits.[ ... First, the catalytic sites are relatively buried, 15Å from the surface of the protein and from the subunit interface.[6] This ... "Glucose analog inhibitors of glycogen phosphorylases as potential antidiabetic agents: recent developments". Current ... Once the Schiff base linkage is formed, holding the PLP molecule in the active site, the phosphate group on the PLP readily ...
The Amphibious Reconnaissance Corpsmen are Navy combat medics, active members of a division or force recon platoons, that are ... or combatant diving in submarine surface and subsurface methods. This ensures they achieve and maintain stealth in order to ... the Australians had already established a network of deep reconnaissance agents known as the Australian Coastwatchers. They ... The sensors are passive systems that require threat emitters to be active to collect. ...
... long-acting agents are recommended.[2] Long-acting agents partly work by reducing hyperinflation.[74] If long-acting ... This close-up of the fixed, cut lung surface shows multiple cavities filled with heavy black carbon deposits. ... active use of muscles in the neck, a bluish tinge to the skin, and confusion or combative behavior in very severe exacerbations ... External agents/. occupational. lung disease. Pneumoconiosis Aluminosis. Asbestosis. Baritosis. Bauxite fibrosis. Berylliosis. ...
The aromatic ring in 6 is activated at positions ortho to the hydroxyl group, and is alkylated by 5, an alkylating agent. The ... 2010). "An active hemovigilance program characterizing the safety profile of 7,483 transfusions with plasma components prepared ... While cell-surface modification and ion channel blocking are two newly discovered mechanisms of action, much research remains ... "UVA and UVB-Induced 8-Methoxypsoralen Photoadducts and a Novel Method for their Detection by Surface-Enhanced Laser Desorption ...
... with the active site held between the barrel and two surface loops. The two subunits are tightly joined back-to-back, mostly by ... An SOD-mimetic agent, TEMPOL, is currently in clinical trials for radioprotection and to prevent radiation-induced dermatitis.[ ... 52 The role of active oxygen in the response of plants to water deficit and desiccation". The New Phytologist. 125: 27-58. doi: ... and their active sites contain the same type and arrangement of amino acid side-chains. They are usually dimers, but ...
Another agent involved in autocrine cancer signaling is vascular endothelial growth factor (VEGF). VEGF, produced by carcinoma ... When interleukin-1 is produced in response to external stimuli, it can bind to cell-surface receptors on the same cell that ... This resistance is proposed to be because autocrine growth signaling pathways distinct from EGFR are active in NSCLC cells. ... In addition, VEGF-A production and VEGFR-2 activation on the surface of breast cancer cells indicates the presence of a ...
The Young Greens have their own constitution, national committee, campaigns and meetings, and have become an active presence at ... Land surface effects on climate. *Loss of green belts. *Phosphorus cycle. *Ocean acidification ... arguing for an internal reorganization of the party in order to develop it into an active electoral force capable of securing ...
The Network currently has active members from more than 50 countries. To facilitate fruitful exchange of reform experiences and ... World Bank organizes the Development Marketplace Awards, a grant program that surfaces and funds development projects with ... It aimed to inspire change agents and prepare them with essential tools that can help achieve development results. WBI had four ...
He commuted the contribution system to a fixed poll tax which was collected by imperial agents and forwarded to units in need.[ ... The Mongols then resumed attacks on the Tatars to avenge the death of their late khan, opening a long period of active ... "The Mongol Empire's Northern Border: Re-evaluating the Surface Area of the Mongol Empire". Academia. Retrieved 6 April 2020 ...
On several occasions he spoke out on behalf of freethinking, so-called, and became early on active in British atheist or " ... remembered for his identification of the bacterium Mycobacterium leprae in 1873 as the causative agent of leprosy.[147][148] ... These questions seem different on the surface, but all of them share one quality that makes them impossible to answer: all of ... John Horton Conway (1937-): British mathematician active in the theory of finite groups, knot theory, number theory, ...
The inner two rings are made of seven β subunits that contain three to seven protease active sites. These sites are located on ... It has been suggested that long loops on these proteins' surfaces serve as the proteasomal substrates and enter the central ... is the first proteasome inhibitor to reach clinical use as a chemotherapy agent.[102] Bortezomib is used in the treatment of ... Its active sites are sheltered inside the tube (blue). The caps (red; in this case, 11S regulatory particles) on the ends ...
The epithelial surfaces form a physical barrier that is impermeable to most infectious agents, acting as the first line of ... endothelial cells (via passive diffusion/ osmosis & active selection). P-glycoprotein (mechanism by which active transportation ... helps remove infectious agents.[2] Also, mucus traps infectious agents.[2] The gut flora can prevent the colonization of ... of skin epithelium also helps remove bacteria and other infectious agents that have adhered to the epithelial surfaces. Lack of ...
... www.reportlinker.com/p098332/Global-Surface-Active-Agents-Industry.html. This report analyzes the worldwide markets for Surface ... Active Agents in Thousand Tons & US$ Million by the following Product Segments: Anionic Surfactants, Nonionic Surfactants, ... Global Surface Active Agents... ... Global Surface Active Agents Industry. News provided by. ...
Evaluation of surface active agents and surfactants. *Technology to understand the effects in use of surface active agents and ... Surface Active Agents and Surfactants Analysis. Surface active agents and surfactants testing and analysis ... Intertek provides detailed characterisation of surface active agents (surfactants). A surface active agent, or surfactant, is a ... Surfactant lower the surface tension of a liquid by spreading spontaneously over its surface. ...
This study covers the world outlook for surface active agent manufacturing across more than 190 countries. For each year ... In order to estimate the latent demand for surface active agent manufacturing on a worldwide basis, I used a multi-stage ... This study covers the world outlook for surface active agent manufacturing across more than 190 countries. For each year ... This study covers the world outlook for surface active agent manufacturing across more than 190 countries. For each year ...
Effect of a Nonionic Surface-Active Agent on Blood Viscosity and Platelet Adhesiveness. FREDERICK L. GROVER, MICHAEL W. HERON, ... The effects of Pluronic F68, a nonionic surface-active agent, on blood viscosity and platelet adhesiveness during ... Effect of a Nonionic Surface-Active Agent on Blood Viscosity and Platelet Adhesiveness ... Effect of a Nonionic Surface-Active Agent on Blood Viscosity and Platelet Adhesiveness ...
"Surface-Active Agents" by people in this website by year, and whether "Surface-Active Agents" was a major or minor topic of ... "Surface-Active Agents" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... Surface-Active Agents*Surface-Active Agents. *Agents, Surface-Active. *Surface Active Agents ... Below are the most recent publications written about "Surface-Active Agents" by people in Profiles. ...
The anti-viral agents are nonionic surfactants and are useful as inactivating agents for herpes simplex. ... Nonionic surface active anti-viral agents are described. ... Nonionic surface active anti-herpes simplex viral agents ... Nonionic surface active agents, in contrast to cationic, anionic and ampholytic surface active agents, contain no ionizable ... Nonionic surface active anti-viral agents are described. The anti-viral agents are nonionic surfactants and are useful as ...
... a specific-surface-active agent on a support, and heat developing the photosensitive material to form an image. ... 101 except that surface-active agents A and B were added to some layers as shown in Table 1. Surface-active agent A has the ... as a surface-active agent. When the compound or surface-active agent is added to an emulsion layer, it does not break the ... surface-active agents, brighteners, anti-slippery agents, antioxidants, anti-fading agents as described in Research Disclosure ...
Water-soluble non-ionic surface-active agents of mono and polysaccharides - Google Patents. Water-soluble non-ionic surface- ... 2. Non-ionic surface active agents containing a hexose molecule in which the hydrogen atom of at least one and at the most two ... Known carbohydrate-base surface active agents are of the ester type. They are liable to be saponified in an alkaline medium and ... Non-ionic surface active agents according to claim 1, wherein the group OR is the radical of an aliphatic alcohol containing ...
The Effect of Surface-Active Chemical Agents on Rock Cutting With Shear/Drag Bits Alexander V. Staroselsky; Alexander V. ... "The Effect of Surface-Active Chemical Agents on Rock Cutting With Shear/Drag Bits." Paper presented at the 1st North American ... namely shallow surface cracks created mechanically and deeper fractures induced by the aid of surfactant. This model permits an ...
Surface Active Agent Suppliers, Surface Active Agent Manufacturers, and Surface Active Agent Exporters provided by ChemNet ... Surface Active Agent Catalog with China Surface Active Agent Products, ... Home > Products , Catalyst and Auxiliary , Surface Active Agent Surface Active Agent Product Catalog ...
BS EN ISO 2871-2:2010 Surface active agents. Detergents. Determination of cationic-active matter content. Cationic-active ... Surface active agents. Detergents. Determination of cationic-active matter content. Cationic-active matter of low molecular ... Surface active agents. Detergents. Determination of cationic-active matter content. Cationic-active matter of low molecular ... 2010 Surface active agents. Detergents. Determination of cationic-active matter content. High-molecular-mass cationic-active ...
1999 Surface active agents. Determination of the total polyethylene glycol content of non-ionic surface active agents (EO ... 1999 Surface active agents. Determination of the polyethylene glycol content according to molar mass in non-ionic surface ... Analysis of surface active agents (raw materials). Ethylene oxide adducts. Method for determination of polyethylene glycols and ... Analysis of surface active agents (raw materials). Ethylene oxide adducts. Method for determination of polyethylene glycols and ...
Antimicrobial Agents and Chemotherapy Dec 2004, 49 (1) 57-70; DOI: 10.1128/AAC.49.1.57-70.2005 ... Surface-Active Fungicidal d-Peptide Inhibitors of the Plasma Membrane Proton Pump That Block Azole Resistance. Brian C. Monk, ... Surface-Active Fungicidal d-Peptide Inhibitors of the Plasma Membrane Proton Pump That Block Azole Resistance ... Surface-Active Fungicidal d-Peptide Inhibitors of the Plasma Membrane Proton Pump That Block Azole Resistance ...
... and a method for preventing static electricity in a polymer fiber using the surface treatment agent, wherein the quaternary ... and in addition to its usefulness as an anti-static agent, it also provides polymer fibers an anti-microbial effect. ... The present invention relates to an anti-microbial and anti-static surface treatment agent with a novel quaternary ammonium ... ANTI-MICROBIAL AND ANTI-STATIC SURFACE TREATMENT AGENT WITH QUATERNARY AMMONIUM SALT AS ACTIVE INGREDIENT AND METHOD FOR ...
And Surface Active Agent Manufacturing,Detergents,Surfactants, Polish And Other Sanitation Goods ManufacturingCovering: - ... Surface Active Agent Manufacturing Polish and Other Sanitation Goods Manufacturing Soap And Cleaning Compounds Market Geography ... And Surface Active Agent Manufacturing,Detergents,Surfactants, Polish And Other Sanitation Goods ManufacturingCovering: Procter ... and surface active agent manufacturing.. Companies Mentioned: Procter & Gamble Co., Unilever, Colgate-Palmolive Co., Ecolab Inc ...
Active Agent Catalog is online Surface Active Agent database of China Surface Active Agent and China Surface Active Agent ...
Surface Active Agents - Surfactants. A surfactant is a surface active chemical that contains two parts. One part is hydrophilic ... Detergents also employ a wide variety of ingredients, including surface active agents, foam producers, antiseptic/antibacterial ... Specialized active ingredients offer anti-aging properties (collagen and retinol), relaxation agents (chamomile) and hair ... Laundry soaps and detergents often contain active ingredients such as bleaches, stain removal agents (such as limonene) and ...
Non-ionic surface-active agents obtained from ethylene oxide and mixed non-ionic surface-active agents - Determination of cloud ... Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low ... Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low ... Surface active agents - Detergents - Determination of anionic-active matter by manual or mechanical direct two-phase titration ...
List of surfactants shows different types of surface active agents prodcuts, manufacturers, chemicals companies or suppliers at ... Surface active antistatic agents can be divided into cationic, anionic and nonionic. "Antistatic Agents" on Echemi mainly ... there are two types of surface-active antistatic agents, namely, external and internal, external, or local antistatic agents ... Antistatic Agents. Antistatic agents are a type of additives added to plastics or applied to the surface of molded products to ...
The structure of the prepared surface active agents were confirmed by micro-analysis, IR and 1H-NMR spectra. The prepared ... surface active agents have a double properties, antimicrobial and high emulsification power. ... SERIES of surface active agents as amphoteric surfactants .......were prepared by the reaction of N-acyl-2-aminothiazole and/or ... Amphoteric Surface Active Agents with Heterocyclic Ring Based on Industrial Wastes. Article 5, Volume 54, Issue 2, March and ...
We are Professional Manufacturer of Nonionic Surface Active Agent company, Factory & Exporters specialize in Nonionic Surface ... Find Nonionic Surface Active Agent Manufacturers & Suppliers from China. ... Nonionic Surface Active Agent Nonionic Surface Active Agents Nonionic Surfactant Nonionic Surfactants Non-ionic Surfactants ... Nonionic Surface Active Agent Nonionic Surface Active Agents Nonionic Surfactant Nonionic Surfactants Non-ionic Surfactants ...
... by a synergistic combination of the Magnolia Bark Extract with a surface active agent in an oral cavity delivery agent, such as ... and anti-microbial benefits includes Magnolia Bark Extract in combination with a surface active agent. The effectiveness of ... testing was performed to determine the ratio of MBE to surface active agent. The germ-kill active and/or surface active agent ... additional surface active agents, abrasives or combinations thereof.. A preferred surface active agent is one that increases ...
Polysaccharide Derivative Demonstrates Surface-Active Properties: [0057] Table 1 shows the surface-activity properties of ... 0013] This invention relates to creating a new class of surface-active agents (amphiphilic molecules) from naturally occurring ... Patent application title: HYDROPHILIC MODIFICATION OF WATER INSOLUBLE POLYSACCHARIDE AS SURFACE-ACTIVE AGENTS. Inventors: Zarif ... Therefore, there is need for safer alternative surface-active compounds that can be used to lower surface tension, aid wetting ...
Surface Active Agents. A question often asked by manufacturers in relation to the FFE approach is, "What about the surfactants ... It is worth focusing here on another issue: The curious notion that surfactants, here meaning "surface active agent" and not ... all of which are based on surface active agents, to "aid in delivery." The idea that the liposomes themselves somehow pass ... The result is the active being stranded on the skin surface. By conducting these simple visual experiments, anyone can get a ...
Efficacy of surface-active agent. The efficacy of the surface-active agents in removing the gangue minerals in the suspension ... The surface-active agents, either simple or complex, adsorb onto hematite surfaces resulting in flocculation of hematite ... An alternative approach is to use techno economically cheap and eco-friendly surface-active agent(s) for beneficiation of iron ... In flue gas desulfurization systems that use magnesium hydroxide (Mg(OH)2) slurry, the consumption of the desulfurization agent ...
Active drug-loaded nanocarriers have been widely employed as efficient drug delivery systems for tumor theranostics. Herein, we ... Gd-DTPA-loaded PLGA microbubbles as both ultrasound contrast agent and MRI contrast agent-A feasibility research. J. Biomed. ... Surface-engineered nanobubbles with pH-/light-responsive drug release and charge-switchable behaviors for active NIR/MR/US ... Active tumor permeation and uptake of surface charge-switchable theranostic nanoparticles for imaging-guided photothermal/chemo ...
This category presents Catalyst, Desulfurizer, from China Catalyst & Active Agent suppliers to global buyers. ... Active Agent manufacturers on Made-in-China.com. ... Clean and Treat Metal Surface Featured Product. FOB Price: $25 ... View Related Catalyst & Active Agent Suppliers , Total 3,136 products in Catalyst & Active Agent category from about 130 ... Chemicals Chemical Auxiliary & Catalyst Catalyst & Active Agent Status Liquid Catalyst (487) Solid Catalyst (1,068) Response ...
Agriculture Organic Silicon-Surface Active Agent Min. Order: 500 Pieces *Shape: Liquid ...
Surface active agents. B. ISO/TC 94/SC 1 Head protection. B. ...
  • This report analyzes the worldwide markets for Surface Active Agents in Thousand Tons & US$ Million by the following Product Segments: Anionic Surfactants, Nonionic Surfactants, Cationic Surfactants, and Amphoteric Surfactants. (prnewswire.com)
  • Intertek provides detailed characterisation of surface active agents (surfactants). (intertek.com)
  • The anti-viral agents are nonionic surfactants and are useful as inactivating agents for herpes simplex. (patents.com)
  • Detergents containing surfactants use the lipophilic end of the agent to capture the dirt and oils which are then carried away with the water. (ehow.com)
  • Household cleaners contain less surfactants to reduce suds but include antimicrobial active agents for disinfectant properties. (ehow.com)
  • Because its main uses are special uses such as bactericides, fiber softeners and antistatic agents, it is used in relatively small amounts compared to anionic and nonionic surfactants. (echemi.com)
  • Monomer molecules and free-radical initiators are added to a water-based emulsion bath along with soaplike materials known as surfactants, or surface-acting agents. (britannica.com)
  • Other surfactants that are more lipophilic and less hydrophilic may be used as defoaming agents, or as demulsifiers. (britannica.com)
  • Detergents and surfactants (surface active agents) are used for cleaning in most industries. (veolia.com)
  • The basic cleaning agents in soaps and detergents are called surface-active agents, or surfactants. (britannica.com)
  • Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids, between a gas and a liquid, or between a liquid and a solid. (wikipedia.org)
  • [1] Agents that increase surface tension are surface active in the literal sense but are not called surfactants since their effect is opposite to the common meaning. (wikipedia.org)
  • A measure of this is the hydrophilic-lipophilic balance (HLB).Surfactants reduce the surface tension of water by adsorbing at the liquid-air interface. (wikipedia.org)
  • Surfactants lower the surface tension of an aqueous solution and are used as wetting agents, detergents, emulsifiers, antiseptics, and disinfectants. (merckvetmanual.com)
  • The third edition is completely updated and revised, including new information on gemini surfactants (a new type of powerful surfactant), superspreading (or superwetting) by aqueous surfactant solutions of highly hydrophobic surfaces (important in agricultural applications), and dynamic surface tension (an important interfacial property not covered in the first two editions). (wiley.com)
  • Drag reducing agents can be broadly classified under the following four categories - Polymers, Solid-particle suspensions, Biological additives, and Surfactants. (wikipedia.org)
  • To safeguard against degradation at high temperature, a different class of drag reducing agents are at times used, namely, surfactants. (wikipedia.org)
  • All three classes of surfactants, namely, anionic, cationic and nonionic surfactants, have been successfully tried as drag-reducing agents. (wikipedia.org)
  • Detergents can have many active ingredients. (ehow.com)
  • All detergents are cleaning agents for the purpose of removing dirt and oils in water. (ehow.com)
  • Laundry soaps and detergents often contain active ingredients such as bleaches, stain removal agents (such as limonene) and polymers to aid the cleaning of fabrics. (ehow.com)
  • washing hands with water and soap or detergents containing an antiseptic agent. (cdc.gov)
  • Does Veolia collect detergents and surface active agent waste? (veolia.com)
  • More effective than non-ionic detergents in the wetting of metal surfaces. (gsa.gov)
  • Less effective than anionic detergents in the wetting of metal surfaces. (gsa.gov)
  • Soaps and detergents help the water spread out and wet the surface or penetrate fabric fibers. (britannica.com)
  • These are amphiphilic compounds used as detergents or wetting, emulsifying, dispersing, and foaming agents in many industrial formulations ( Nitschke and Pastore, 2002 ). (frontiersin.org)
  • A surface active agent, or surfactant, is a substance which lowers the surface tension of the medium in which it is dissolved, the interfacial tension with other phases, and is positively adsorbed at the liquid-vapour interface and other interfaces. (intertek.com)
  • Surfactant lower the surface tension of a liquid by spreading spontaneously over its surface. (intertek.com)
  • The mathematical model developed based on the observation hypothesizes that two types of fractures are created by cutting action under the influence of surfactant, namely shallow surface cracks created mechanically and deeper fractures induced by the aid of surfactant. (onepetro.org)
  • A surfactant is a surface active chemical that contains two parts. (ehow.com)
  • When a surfactant dissolved in water and other parameters, such as surface tension, osmotic pressure, electrical conductivity or solubility are plotted together, at a specific concentration of the surfactant, there will be an abrupt change in the value of the other parameters. (news-medical.net)
  • Our mission is to develop creative products to customers with a good experience for Nonionic Surface Active Agent , Nonionic Surface Active Agents , Nonionic Surfactant , The team of our company along with the use of cutting-edge technologies delivers impeccable top quality products supremely adored and appreciated by our shoppers worldwide. (chinaluckychem.com)
  • Surfactant , also called surface-active agent , substance such as a detergent that, when added to a liquid , reduces its surface tension , thereby increasing its spreading and wetting properties. (britannica.com)
  • A surfactant (Surface Active Agent). (gsa.gov)
  • The word surfactant is a blend of surface-active agent . (wikipedia.org)
  • The surface rheology of surfactant layers, including the elasticity and viscosity of the layer, play an important role in the stability of foams and emulsions. (wikipedia.org)
  • Surfactant is a very convenient contraction of the term Surface-active agent. (wikipedia.org)
  • Markets Covered: soap and other detergent manufacturing, polish and other sanitation goods manufacturing, and surface active agent manufacturing. (marketresearch.com)
  • a soap (i.e., detergent) containing an antiseptic agent. (cdc.gov)
  • Veolia's highly trained and experienced team can safely collect, treat and correctly dispose your detergent and surface active agent waste at one of our licensed waste treatment facilities. (veolia.com)
  • The bioburden was evaluated by a filtering procedure according to UNI EN 1174 after contamination, after washing and after different times of impregnation in an alcohol-base detergent. (scielo.br)
  • Moreover the plastic-silver containers should obviate the problem of possible detergent contamination during cleaning operations, thus guaranteeing high overall disinfection of the surfaces. (scielo.br)
  • Second, the surface absorbs the soap or detergent. (britannica.com)
  • The first detergent (or surface-active agent) was soap. (britannica.com)
  • Nonionic surface active agents, in contrast to cationic, anionic and ampholytic surface active agents, contain no ionizable groups and have no surface charge. (patents.com)
  • Determination of cationic-active matter content. (bsigroup.com)
  • They are usually found on epithelial cell surfaces and in phagocytic cells at sites of microbial invasion, and only a few instances of constitutive or induced resistance to cationic peptides have been detected (for a review, see reference 44 ). (asm.org)
  • Although the cationic peptides are subdivided into several structural classes ( 10 ), they are, in general, amphipathic molecules that preferentially bind to acidic phospholipids, acidic polysaccharides, and lipopolysaccharides on the exterior of the lipid bilayer of invading microbes rather than to the cholesterol-rich and neutral plasma membrane surfaces of mammalian host cells. (asm.org)
  • Surface active antistatic agents can be divided into cationic, anionic and nonionic. (echemi.com)
  • These compositions contain at least one cationic polymer, at least one anionic polymer, at least one alkali metal salt and at least one non-ionic surface-active agent or surface-active agent which contains one or more. (google.com)
  • These compounds are nitrogenous cationic surface active agents. (wikipedia.org)
  • However, newer dialkyl quaternary ammonium compounds (fourth generation, including dodecyl dimethyl ammonium bromide, dioctyl dimethyl ammonium bromide, etc) purportedly remain active in hard water and are tolerant of anionic residues. (merckvetmanual.com)
  • It is an anionic surface active compound, which has marked wetting characteristics. (inchem.org)
  • The key is to use a proper mix of additives to minimize corrosion, keep microorganisms from growing and decrease surface tension. (overclockers.com)
  • A lower surface tension allows the soap to come in contact with greater surface area than with water alone. (gsa.gov)
  • When added to a liquid, they reduce its surface tension (the affinity that the surface molecules have for each other), thereby increasing the liquid's spreading and wetting properties. (britannica.com)
  • 5.1 These methods provide data that are useful in evaluating the effectiveness of surface active agents in reducing surface tension. (astm.org)
  • In addition, surface tension data can predict interactions between liquids and solid surfaces or other liquids and can be used to establish wetting properties of paints, solvents, and other liquids. (astm.org)
  • Method A-Surface Tension by du Noüy ring. (astm.org)
  • Method C-Surface Tension by Wilhelmy plate. (astm.org)
  • The relation that links the surface tension and the surface excess is known as the Gibbs isotherm . (wikipedia.org)
  • Interfacial and surface tension can be characterized by classical methods such as the -pendant or spinning drop method . (wikipedia.org)
  • In this work, a novel biosurfactant-producing strain Acinetobacter junii BD was isolated from a reservoir to reduce surface tension and emulsify crude oil. (frontiersin.org)
  • The dental plaque biofilm, however, is very resistant to antimicrobial agents. (justia.com)
  • Aqueous solutions of 1:1,000 to 1:5,000 have good antimicrobial activity, especially at slightly alkaline pH, and are commonly used for disinfection of noncritical instruments and hard surface cleaning. (merckvetmanual.com)
  • II.H Determination of the Specific Surface Areas of Solids. (wiley.com)
  • The process by which these compounds are prepared comprises reacting a compound of the formula in which R is an alkyl group of eight to fifteen carbon atoms and n is an integer from twelve to forty, with benzyl chloride or bromidein the presence of a strongly basic inorganic neutralizing agent. (google.com.au)
  • Its active ingredients include quaternary ammonium compounds from the family of benzalkonium chlorides and didecyldimethylammonium chloride. (wikipedia.org)
  • Applicable to all non-ionic agents containing from 2 to 80 oxyethylene groups per molecule. (bsigroup.com)
  • The surface-active molecule must be partly hydrophilic ( water -soluble) and partly lipophilic (soluble in lipids , or oils). (britannica.com)
  • The Company's patented systems have been used in the creation and development of novel oral delivery systems for insulin, interferon and other protein-based therapies, cell-receptor targeting of a wide variety of large and small molecule drugs and diagnostics, and consumer products ranging from hair conditioners and styling agents to skin-adhering insect repellents and sunscreens. (prweb.com)
  • Part of the surface-active molecule must be hydrophilic, or "water-loving," and part must be hydrophobic, or water-repellent. (britannica.com)
  • The hydrophilic part of the surface-active molecule attaches itself to the water, and the hydrophobic part attaches itself to the solid or fiber and, most important, the soil. (britannica.com)
  • III.B Calculation of Surface Concentrations and Area per Molecule at the Interface By Use of the Gibbs Equation. (wiley.com)
  • It connotes an organic molecule or an unformulated compound having surface-active properties. (wikipedia.org)
  • The process of applying an antiseptic hand-rub product to all surfaces of the hands to reduce the number of microorganisms present. (cdc.gov)
  • 1-3 However, the surfaces must be cleaned correctly if the procedure is to be effective and to prevent the spreading of microorganisms to uncontaminated surfaces. (scielo.br)
  • Recent studies comparing the decontamination capacity of some microfiber and ultra-microfiber fabrics with that of conventional fabrics used in cleaning have shown that microfiber and ultra-microfiber fabrics remove dirt and microorganisms from surfaces more effectively. (scielo.br)
  • 4,5 Given the high microbial load normally present, one of the drawbacks to cleaning surfaces, and in particular floors, using mops (even microfiber mops) is that the cloths - previously contaminated or contaminated during the cleaning operation - can disperse microorganisms. (scielo.br)
  • The term biosurfactant is described as a "surface active agent" produced by microorganisms ( Marchant and Banat, 2012 ). (frontiersin.org)
  • Low concentrations (0.1--1.0%) of surface-active substances Tween-20, Triton X-100 and sodium deoxycholate were shown to extract 20--40% of cholesterol from dog vessel wall. (msk.ru)
  • A color image is formed by imagewise exposing a photosensitive material comprising at least (a) a photosensitive silver halide, (b) a binder, (c) a dye-providing substance which forms or releases a diffusible dye in response or counter-response to the reduction of the silver halide into silver at elevated temperatures, and (d) a specific-surface-active agent on a support, and heat developing the photosensitive material to form an image. (google.com)
  • To eliminate these drawbacks, Japanese Patent Application Kokai No. 58-79247 discloses a heat-developable photosensitive material comprising a dye-providing substance which reacts with an oxidant of a reducing agent to release a hydrophilic dye. (google.com)
  • After the industrial revolution, soap came to be seen primarily as an agent for cleaning and washing. (encyclopedia.com)
  • The Soap, organic surface-active agents, washing preparations, lubricating preparations, artificial waxes, prepared waxes, polishing or scouring preparations, candles and similar articles, modelling pastes, dental waxes and dental preparations with a bas GST percentage in India is covered under the chapter 34 of HSN code. (gstpercentage.com)
  • The GST tax rates for the Soap, organic surface-active agents, washing preparations, lubricating preparations, artificial waxes, prepared waxes, polishing or scouring preparations, candles and similar articles, modelling pastes, dental waxes and dental preparations with a bas are finalized and all the state and union territories are paving the way for the smooth rollout of the tax. (gstpercentage.com)
  • Soap may produce a greasy build-up on the surface which can be slippery. (gsa.gov)
  • Chemical agents that damage or remove the envelope will dramatically reduce infectivity. (patents.com)
  • 1. CHEMICAL PLAQUE CONTROL PLAQUE Dental plaque is defined as a highly specific variable structural entity formed by sequential colonization of microorganism on the tooth surface, epithelium and restorations. (slideshare.net)
  • any such agent (like mustard gas) used in chemical warfare. (tabers.com)
  • Any chemical, biological, radiologic, nuclear, or explosive agent that may be used as a weapon in military or terrorist activities. (tabers.com)
  • said reaction product retaining said backbone structure and having surface active properties in liquids. (patentsencyclopedia.com)
  • and recovering a reaction product that retains said backbone structure and is surface active in liquids. (patentsencyclopedia.com)
  • 1.4 Method C is applicable to surface active liquids and, unlike du Noüy ring, no buoyancy corrections are needed and results are not affected by moderate viscosities (1-10 Pa-sec) of the liquid. (astm.org)
  • Specialized active ingredients offer anti-aging properties (collagen and retinol), relaxation agents (chamomile) and hair removal (potassium thioglycolate). (ehow.com)
  • An active ingredient, or a combination of active ingredients, that can provide the benefits of either removing plaque, preventing or slowing down plaque formation, or that has an anti-inflammatory effect that would help maintain the healthy state of the gums would promote health gums and fresh breath. (justia.com)
  • SDG has successfully developed, patented and commercialized nanoscale liposomes to be carriers for individual drug molecules for therapeutic treatments as well as diagnostic imaging agents, nutraceutical ingredients, and consumer product actives, including fragrances, conditioners, sunscreens and hair care actives. (prweb.com)
  • Some soaps form the basis for cosmetic creams, and other soaps are used as paint driers, lubricating greases, and gelling agents. (britannica.com)
  • Antistatic agents are a type of additives added to plastics or applied to the surface of molded products to reduce the accumulation of static electricity. (echemi.com)
  • A complicating factor in this understanding is the proprietary composition of many additives and pigment surface chemistries. (thefreelibrary.com)
  • The form and function of the different surface active additives can be described generally and their probable interactions predicted, thus providing a pathway for elimination of low-value experimentation and faster formulation development. (thefreelibrary.com)
  • Drag-reducing agents (DRA), or drag-reducing polymers (DRP's), are additives in pipelines that reduce turbulence in a pipe. (wikipedia.org)
  • It concentrates at the interfaces between bodies or droplets of water and those of oil , or lipids, to act as an emulsifying agent, or foaming agent. (britannica.com)
  • Surface-active molecules concentrate at the interfaces, or areas of contact, between water and oil. (britannica.com)
  • 2 Adsorption of Surface-Active Agents at Interfaces: The Electrical Double Layer. (wiley.com)
  • 2011). 'Amphoteric Surface Active Agents with Heterocyclic Ring Based on Industrial Wastes', Egyptian Journal of Chemistry , 54(2), pp. 223-237. (ekb.eg)
  • This invention relates to the use of alkyl amido quaternary ammonium salts, and formulations thereof, as thickening agents in aqueous based fluids, especially those used in oil field applications. (google.com)
  • The debonder/softening agents belong to a group of organic chemicals that include several imidazolinium quaternary. (google.ca)
  • Nanofilm brings to the partnership over 25 years of experience as a leader in nanofilm technology and self-assembling thin films for a variety of substrates and surfaces. (prweb.com)
  • 1.3 Solvent and cleaning agent compatibility with nonmetallic substrates should be verified prior to the preparation of the test coupons. (astm.org)
  • II.F Effects of Adsorption from Aqueous Solution on the Surface Properties of the Solid Adsorbent. (wiley.com)
  • The effects of Pluronic F68, a nonionic surface-active agent, on blood viscosity and platelet adhesiveness during extracorporeal circulation were investigated. (ahajournals.org)
  • It is known to incorporate active agents into oral compositions for the purpose of providing oral benefits including breath freshening and bactericidal properties. (justia.com)
  • 260-613) This invention relates to low-foaming non-ionic surface-active compositions. (google.com.au)
  • 3 . The surface cleaning pad of claim 2 further comprising cellulosic fibers disbursed throughout said pad body. (google.ca)
  • Yeo and Jeong 7 demonstrated the antibacterial effectiveness of fibers composed of polypropylene and nanoparticles of silver, proving that this effect is only seen when the fibers contain nanoparticles of silver on the surface. (scielo.br)
  • 1.2 Method A originally was written primarily to cover aqueous solutions of surface-active agents, but is also applicable to aqueous paints, nonaqueous solutions (including paints) and mixed solvent solutions. (astm.org)
  • 260-209) This invention relates to non-ionic surface-active agents consisting of carbohydrate molecules having oxygenbound side groups. (google.com)
  • Any agent that introduces an alkyl radical into a compound in place of a hydrogen atom. (tabers.com)
  • The most common agent is ammonium thiosulfate. (tabers.com)
  • The Polyalkylene glycol market has been segmented on the basis of application into lubricants, surface active agents, pharmaceutical, personal care, and others. (marketsandmarkets.com)
  • The effectiveness of Magnolia Bark Extract in inhibiting biofilm formation in the oral cavity is increased by a synergistic combination of the Magnolia Bark Extract with a surface active agent in an oral cavity delivery agent, such as chewing gum, a confectionary, a lozenge, a compressed tablet, and an edible film. (justia.com)
  • 5.2 These test coupons shall be used in the evaluation of cleaning agents for oxygen-enriched systems and components. (astm.org)
  • 1.1 This practice describes the procedure for the preparation of single- and double-sided contaminated test coupons for the evaluation of cleaning agents. (astm.org)
  • TPEG 2400 is non toxic without excitant good water solubility hydrolysis not metamorphism And with a variety of components with good intermiscibility As poly carboxylic acid is a main raw material for use in cement water reducing agent the synthesis of poly carboxylic acid high efficiency of water reducing agent has. (chinaluckychem.com)
  • General corrosion is the primary means by which metal components are attacked, causing the deterioration of metal surfaces. (overclockers.com)
  • However, no effective prophylactic or therapeutic agent for preventing herpes simplex virus infection exists. (patents.com)
  • For example, bacteria that cause disease are agents of the specific diseases they cause, and medicine is a therapeutic agent. (tabers.com)
  • Role of coal surface properties in fine coal processing. (elsevier.com)
  • 3. Coal Surface Properties. (elsevier.com)
  • Typically, formulations contain at least two, and often three or more, surface active components that are combined to provide the optimal properties. (thefreelibrary.com)
  • An oral composition for oral cleansing, breath freshening, and anti-microbial benefits includes Magnolia Bark Extract in combination with a surface active agent. (justia.com)
  • The biofilm is embedded in an extracellular matrix of polymers that originate from both the tooth surface and the microbial organisms. (justia.com)
  • the microbiological load (i.e., number of viable organisms in or on the object or surface) or organic material on a surface or object prior to decontamination, or sterilization, also known as "bioload" or "microbial load. (cdc.gov)
  • These are waterless antiseptic agents not requiring the use of exogenous water. (cdc.gov)
  • Détermination de la teneur en matiére active cationique. (bsigroup.com)
  • The polymer has a specific gravity of less than one and will tend to separate and move to the surface when mixed with water. (epa.gov)
  • e) Rinse cleansed surfaces with clean water. (epa.gov)
  • Using 100% distilled water or DI water in a PC water-cooling system is not recommended, as it may slowly attack metallic surfaces, especially aluminum! (overclockers.com)
  • Frothers - water-soluble surface active agents. (elsevier.com)
  • The formulation of aqueous pigment dispersions is enabled by the use of surface active agents to wet, disperse, and stabilize solid particles or pigments in water as well as to provide letdown compatibilization, defoaming, and application performance. (thefreelibrary.com)
  • It will form gels, emulsify oil and lower the surface tensionof water. (gsa.gov)
  • Mechanical agitation-such as the agitation that occurs in a washing machine when the clothes are moved back and forth through the water-helps the surface-active molecules pull the dirt away from the material and into the water. (britannica.com)
  • The relaxivity (r1) of the nanobubbles reaches 16.56 s −1 /mM, indicating suitable features for use as a T1-weighted MR contrast agent. (nature.com)
  • BM2 represents a novel class of broad-spectrum, surface-active, Pma1p-targeting fungicides which increases the potencies of azole drugs and circumvents azole resistance. (asm.org)
  • 19 reported a pH-/thermal-/glutathione-responsive polymer zipper consisting of cell-penetrating poly(disulfide)s and thermosensitive polymers bearing guanidinium/phosphate (Gu+/pY−) motifs to spatiotemporally tune the surface composition of nanocarriers for precise tumor targeting and efficient drug delivery. (nature.com)
  • The invention is directed toward a sterile malleable bone composition for application to a bone defect site to promote new bone growth at the site comprising a mixture of demineralized osteogenic bone powder with a particle size ranging from about 250 to about 750 microns and surface demineralized cortical. (google.de)
  • c) curing the coating composition on the inner surface after the injecting step to form a siloxane coating. (google.es)
  • 4 . The surface cleaning pad of claim 2 further comprising superabsorbent polymer particles disbursed throughout said pad body. (google.ca)
  • The surface-engineered nanobubbles are constructed from oleylamine-/IR-780-loaded hollow structures, folate and the Gd [email protected] complex via electrostatic adsorption and further filled with gas after freeze drying. (nature.com)
  • Prevents pellicle formation by blocking acidic groups on salivary glycoproteins thereby reducing glycoprotein adsorption on to the tooth surface 6. (slideshare.net)
  • Prevents adsorption of bacterial cell wall on to the tooth surface 7. (slideshare.net)
  • These nanoparticles can change surface charge from negative to positive in response to external stimuli, such as tumor microenvironment pH (6.0-7.0) or endosomal/lysosomal pH (4.0-6.0). (nature.com)
  • Further, the PLGA nanoparticles were labeled with ⁹⁹(m)Tc using SnCl₂ as the reducing agent. (nih.gov)
  • This study covers the world outlook for surface active agent manufacturing across more than 190 countries. (reportlinker.com)
  • This study gives, however, my estimates for the worldwide latent demand, or the P.I.E., for surface active agent manufacturing. (reportlinker.com)
  • In order to estimate the latent demand for surface active agent manufacturing on a worldwide basis, I used a multi-stage approach. (reportlinker.com)
  • The invention consists of soft, bulky tissue products that result from the presence of a debonder/softening agent in the outer layers of the tissue and creping under 'closed' pocket conditions. (google.ca)
  • In 1939, Cantor, who patented a production route of sucrose fatty acid esters from starch factory by-products, claimed that the products could be used as emulsifying agents or fats. (wikipedia.org)