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 ...
Surfactants work by reducing surface tension between two liquids or a liquid and a solid. Biosurfactants, surface-active agents ...
... is a blend of surface-active agent, coined c. 1950. Agents that increase surface tension are "surface active" in the literal ... A surfactant (a contraction of surface-active agent) is a substance that, when present at low concentration in a system. has ... 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- ...
... 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 ...
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- ...
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 ...
These agents not only damage the olfactory epithelium, but they are likely to enter the brain via the olfactory mucosa.[35] ...
... 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 ...