Fatty Acids: Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)Microalgae: A non-taxonomic term for unicellular microscopic algae which are found in both freshwater and marine environments. Some authors consider DIATOMS; CYANOBACTERIA; HAPTOPHYTA; and DINOFLAGELLATES as part of microalgae, even though they are not algae.EstersBiofuels: Hydrocarbon-rich byproducts from the non-fossilized BIOMASS that are combusted to generate energy as opposed to fossilized hydrocarbon deposits (FOSSIL FUELS).Chromatography, Gas: Fractionation of a vaporized sample as a consequence of partition between a mobile gaseous phase and a stationary phase held in a column. Two types are gas-solid chromatography, where the fixed phase is a solid, and gas-liquid, in which the stationary phase is a nonvolatile liquid supported on an inert solid matrix.Biomass: Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Lanolin: A yellow fat obtained from sheep's wool. It is used as an emollient, cosmetic, and pharmaceutic aid.Sensitivity and Specificity: Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)Esterification: The process of converting an acid into an alkyl or aryl derivative. Most frequently the process consists of the reaction of an acid with an alcohol in the presence of a trace of mineral acid as catalyst or the reaction of an acyl chloride with an alcohol. Esterification can also be accomplished by enzymatic processes.Antigens, CD1d: A major histocompatibily complex class I-like protein that plays a unique role in the presentation of lipid ANTIGENS to NATURAL KILLER T-CELLS.Antigens, CD1: Glycoproteins expressed on cortical thymocytes and on some dendritic cells and B-cells. Their structure is similar to that of MHC Class I and their function has been postulated as similar also. CD1 antigens are highly specific markers for human LANGERHANS CELLS.Galactosylceramides: Cerebrosides which contain as their polar head group a galactose moiety bound in glycosidic linkage to the hydroxyl group of ceramide. Their accumulation in tissue, due to a defect in beta-galactosidase, is the cause of galactosylceramide lipidosis or globoid cell leukodystrophy.Natural Killer T-Cells: A specialized subset of T-LYMPHOCYTES that exhibit features of INNATE IMMUNITY similar to that of NATURAL KILLER CELLS. They are reactive to glycolipids presented in the context of the major histocompatibility complex (MHC) class I-like molecule, CD1D ANTIGEN.Saposins: A group of four homologous sphingolipid activator proteins that are formed from proteolytic cleavage of a common protein precursor molecule referred to as prosaposin.Killer Cells, Natural: Bone marrow-derived lymphocytes that possess cytotoxic properties, classically directed against transformed and virus-infected cells. Unlike T CELLS; and B CELLS; NK CELLS are not antigen specific. The cytotoxicity of natural killer cells is determined by the collective signaling of an array of inhibitory and stimulatory CELL SURFACE RECEPTORS. A subset of T-LYMPHOCYTES referred to as NATURAL KILLER T CELLS shares some of the properties of this cell type.Click Chemistry: Organic chemistry methodology that mimics the modular nature of various biosynthetic processes. It uses highly reliable and selective reactions designed to "click" i.e., rapidly join small modular units together in high yield, without offensive byproducts. In combination with COMBINATORIAL CHEMISTRY TECHNIQUES, it is used for the synthesis of new compounds and combinatorial libraries.Cell Adhesion Molecules: Surface ligands, usually glycoproteins, that mediate cell-to-cell adhesion. Their functions include the assembly and interconnection of various vertebrate systems, as well as maintenance of tissue integration, wound healing, morphogenic movements, cellular migrations, and metastasis.NK Cell Lectin-Like Receptor Subfamily B: A subclass of NK cell lectin-like receptors that includes both inhibitory and stimulatory members.Antigen Presentation: The process by which antigen is presented to lymphocytes in a form they can recognize. This is performed by antigen presenting cells (APCs). Some antigens require processing before they can be recognized. Antigen processing consists of ingestion and partial digestion of the antigen by the APC, followed by presentation of fragments on the cell surface. (From Rosen et al., Dictionary of Immunology, 1989)Crk-Associated Substrate Protein: Crk-associated substrate was originally identified as a highly phosphorylated 130 kDa protein that associates with ONCOGENE PROTEIN CRK and ONCOGENE PROTEIN SRC. It is a signal transducing adaptor protein that undergoes tyrosine PHOSPHORYLATION in signaling pathways that regulate CELL MIGRATION and CELL PROLIFERATION.Waiting Lists: Prospective patient listings for appointments or treatments.CRISPR-Associated Proteins: Protein components of the CRISPR-CAS SYSTEMS for anti-viral defense in ARCHAEA and BACTERIA. These are proteins that carry out a variety of functions during the creation and expansion of the CRISPR ARRAYS, the capture of new CRISPR SPACERS, biogenesis of SMALL INTERFERING RNA (CRISPR or crRNAs), and the targeting and silencing of invading viruses and plasmids. They include DNA HELICASES; RNA-BINDING PROTEINS; ENDONUCLEASES; and RNA and DNA POLYMERASES.Cellular Apoptosis Susceptibility Protein: A nucleocytoplasmic transport protein that binds to ALPHA KARYOPHERINS and RAN GTP BINDING PROTEIN inside the CELL NUCLEUS and participates in their export into CYTOPLASM. It is also associated with the regulation of APOPTOSIS and microtubule assembly.Retinoblastoma-Like Protein p130: A negative regulator of the CELL CYCLE that undergoes PHOSPHORYLATION by CYCLIN-DEPENDENT KINASES. RBL2 contains a conserved pocket region that binds E2F4 TRANSCRIPTION FACTOR and E2F5 TRANSCRIPTION FACTOR. RBL2 also interacts with viral ONCOPROTEINS such as POLYOMAVIRUS TUMOR ANTIGENS; ADENOVIRUS E1A PROTEINS; and PAPILLOMAVIRUS E7 PROTEINS.Databases, Factual: Extensive collections, reputedly complete, of facts and data garnered from material of a specialized subject area and made available for analysis and application. The collection can be automated by various contemporary methods for retrieval. The concept should be differentiated from DATABASES, BIBLIOGRAPHIC which is restricted to collections of bibliographic references.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.CRISPR-Cas Systems: Adaptive antiviral defense mechanisms, in archaea and bacteria, based on DNA repeat arrays called CLUSTERED REGULARLY INTERSPACED SHORT PALINDROMIC REPEATS (CRISPR elements) that function in conjunction with CRISPR-ASSOCIATED PROTEINS (Cas proteins). Several types have been distinguished, including Type I, Type II, and Type III, based on signature motifs of CRISPR-ASSOCIATED PROTEINS.Database Management Systems: Software designed to store, manipulate, manage, and control data for specific uses.Clustered Regularly Interspaced Short Palindromic Repeats: Repetitive nucleic acid sequences that are principal components of the archaeal and bacterial CRISPR-CAS SYSTEMS, which function as adaptive antiviral defense systems.AlaskaCoronary Artery Disease: Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.Coronary Vessels: The veins and arteries of the HEART.Coronary Disease: An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.Coronary Angiography: Radiography of the vascular system of the heart muscle after injection of a contrast medium.Heart Rate: The number of times the HEART VENTRICLES contract per unit of time, usually per minute.Death, Sudden: The abrupt cessation of all vital bodily functions, manifested by the permanent loss of total cerebral, respiratory, and cardiovascular functions.Heart: The hollow, muscular organ that maintains the circulation of the blood.Fatty Acids, Omega-3: A group of fatty acids, often of marine origin, which have the first unsaturated bond in the third position from the omega carbon. These fatty acids are believed to reduce serum triglycerides, prevent insulin resistance, improve lipid profile, prolong bleeding times, reduce platelet counts, and decrease platelet adhesiveness.Metabolome: The dynamic collection of metabolites which represent a cell's or organism's net metabolic response to current conditions.Metabolomics: The systematic identification and quantitation of all the metabolic products of a cell, tissue, organ, or organism under varying conditions. The METABOLOME of a cell or organism is a dynamic collection of metabolites which represent its net response to current conditions.Arachidonate 15-Lipoxygenase: An enzyme that catalyzes the oxidation of arachidonic acid to yield 15-hydroperoxyarachidonate (15-HPETE) which is rapidly converted to 15-hydroxy-5,8,11,13-eicosatetraenoate (15-HETE). The 15-hydroperoxides are preferentially formed in NEUTROPHILS and LYMPHOCYTES.8,11,14-Eicosatrienoic Acid: A 20-carbon-chain fatty acid, unsaturated at positions 8, 11, and 14. It differs from arachidonic acid, 5,8,11,14-eicosatetraenoic acid, only at position 5.Arachidonic Acid: An unsaturated, essential fatty acid. It is found in animal and human fat as well as in the liver, brain, and glandular organs, and is a constituent of animal phosphatides. It is formed by the synthesis from dietary linoleic acid and is a precursor in the biosynthesis of prostaglandins, thromboxanes, and leukotrienes.AmidohydrolasesMonoacylglycerol Lipases: An enzyme that catalyzes the hydrolysis of glycerol monoesters of long-chain fatty acids EC 3.1.1.23.Arachidonic AcidsEndocannabinoids: Fatty acid derivatives that have specificity for CANNABINOID RECEPTORS. They are structurally distinct from CANNABINOIDS and were originally discovered as a group of endogenous CANNABINOID RECEPTOR AGONISTS.Polyunsaturated Alkamides: Amides composed of unsaturated aliphatic FATTY ACIDS linked with AMINES by an amide bond. They are most prominent in ASTERACEAE; PIPERACEAE; and RUTACEAE; and also found in ARISTOLOCHIACEAE; BRASSICACEAE; CONVOLVULACEAE; EUPHORBIACEAE; MENISPERMACEAE; POACEAE; and SOLANACEAE. They are recognized by their pungent taste and for causing numbing and salivation.Microscopy: The use of instrumentation and techniques for visualizing material and details that cannot be seen by the unaided eye. It is usually done by enlarging images, transmitted by light or electron beams, with optical or magnetic lenses that magnify the entire image field. With scanning microscopy, images are generated by collecting output from the specimen in a point-by-point fashion, on a magnified scale, as it is scanned by a narrow beam of light or electrons, a laser, a conductive probe, or a topographical probe.Air: The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Membranes, Artificial: Artificially produced membranes, such as semipermeable membranes used in artificial kidney dialysis (RENAL DIALYSIS), monomolecular and bimolecular membranes used as models to simulate biological CELL MEMBRANES. These membranes are also used in the process of GUIDED TISSUE REGENERATION.Pressure: A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Water: 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)Meibomian Glands: The sebaceous glands situated on the inner surface of the eyelids between the tarsal plates and CONJUNCTIVA.Pulmonary Surfactants: Substances and drugs that lower the SURFACE TENSION of the mucoid layer lining the PULMONARY ALVEOLI.Colloids: Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.Surface-Active Agents: 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.ConnecticutDermatology: A medical specialty concerned with the skin, its structure, functions, diseases, and treatment.Posters as Topic: Single or multi-sheet notices made to attract attention to events, activities, causes, goods, or services. They are for display, usually in a public place and are chiefly pictorial.LondonNew YorkNew York CityIsraelUniversities: Educational institutions providing facilities for teaching and research and authorized to grant academic degrees.Research: Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)Hypericum: Genus of perennial plants in the family CLUSIACEAE (sometimes classified as Hypericaceae). Herbal and homeopathic preparations are used for depression, neuralgias, and a variety of other conditions. Hypericum contains flavonoids; GLYCOSIDES; mucilage, TANNINS; volatile oils (OILS, ESSENTIAL), hypericin and hyperforin.Eicosanoic Acids: 20-carbon saturated monocarboxylic acids.Stearic Acids: A group of compounds that are derivatives of octadecanoic acid which is one of the most abundant fatty acids found in animal lipids. (Stedman, 25th ed)Nucleic Acid Denaturation: Disruption of the secondary structure of nucleic acids by heat, extreme pH or chemical treatment. Double strand DNA is "melted" by dissociation of the non-covalent hydrogen bonds and hydrophobic interactions. Denatured DNA appears to be a single-stranded flexible structure. The effects of denaturation on RNA are similar though less pronounced and largely reversible.Plant Oils: Oils derived from plants or plant products.Carbon: A nonmetallic element with atomic symbol C, atomic number 6, and atomic weight [12.0096; 12.0116]. It may occur as several different allotropes including DIAMOND; CHARCOAL; and GRAPHITE; and as SOOT from incompletely burned fuel.Dietary Fats: Fats present in food, especially in animal products such as meat, meat products, butter, ghee. They are present in lower amounts in nuts, seeds, and avocados.Palmitic Acids: A group of 16-carbon fatty acids that contain no double bonds.

Structural analysis of the lipopolysaccharide from Chlamydia trachomatis serotype L2. (1/97)

The lipopolysaccharide (LPS) of Chlamydia trachomatis L2 was isolated from tissue culture-grown elementary bodies using a modified phenol/water procedure followed by extraction with phenol/chloroform/light petroleum. From a total of 5 x 10(4) cm2 of infected monolayers, 22.3 mg of LPS were obtained. Compositional analysis indicated the presence of 3-deoxy-D-manno-oct-2-ulopyranosonic acid (Kdo), GlcN, phosphorus, and fatty acids in a molar ratio of 2.8:2:2.1:4.5. Matrix-assisted laser-desorption ionization mass spectrometry performed on the de-O-acylated LPS gave a major molecular ion peak at m/z 1781.1 corresponding to a molecule of 3 Kdo, 2 GlcN, 2 phosphates, and two 3-hydroxyeicosanoic acid residues. The structure of deacylated LPS obtained after successive treatment with hydrazine and potassium hydroxide was determined by 600 MHz NMR spectroscopy as Kdoalpha2-->8Kdoalpha2-->4Kdoalpha2-->6D-GlcpNbeta1 -->6D-GlcpNalpha 1,4'-bisphosphate. These data, together with those published recently on the acylation pattern of chlamydial lipid A (Qureshi, N., Kaltashov, I., Walker, K., Doroshenko, V., Cotter, R. J., Takayama, K, Sievert, T. R., Rice, P. A., Lin, J.-S. L., and Golenbock, D. T. (1997) J. Biol. Chem. 272, 10594-10600) allow us to present for the first time the complete structure of a major molecular species of a chlamydial LPS.  (+info)

Measurement of in vivo rectal mucosal cytokine and eicosanoid production in ulcerative colitis using filter paper. (2/97)

BACKGROUND: Excessive mucosal generation of cytokines and eicosanoids has been reported in vitro in ulcerative colitis (UC) using traumatising biopsy techniques, and in vivo using time consuming rectal dialysis. AIMS: To validate a simple filter paper technique to profile rectal mucosal production of cytokines and eicosanoids in vivo in patients with UC compared with controls. PATIENTS: Forty one patients with UC (21 with active disease) and 16 controls were studied. METHODS: In vitro, recovery of known concentrations of cytokine or mediator applied to filter papers was measured by ELISA following incubation in buffer. In vivo, patients and controls had filter papers apposed to the rectal mucosa briefly through a rigid sigmoidoscope. Filter papers were then incubated prior to assay by ELISA. RESULTS: In vitro validation studies showed that the filter paper technique could be used to measure mucosal release of interleukin-1beta (IL-1beta), tumour necrosis factor alpha (TNF-alpha), thromboxane B(2) (TXB(2)), and prostaglandin E(2) (PGE(2)), but not interferon gamma (IFN-gamma). Mucosal release of IL-1beta, TNF-alpha, TXB(2) and PGE(2) were significantly increased in active UC (p=0.001) and correlated directly with disease activity (p=0.02). CONCLUSIONS: The filter paper technique confirmed increased rectal mucosal release of cytokines and eicosanoids in UC, in proportion to disease activity. The simplicity, safety and speed of the technique make it a practicable option for use in the outpatient clinic to study the pathogenesis of inflammatory bowel disease, and potentially its response to treatment.  (+info)

Requirements for unsaturated fatty acids for the induction on respiration in Saccharomyces cerevisiae. (3/97)

Unsaturated fatty acids provided during the release from glucose repression were shown to be essential for derepression of respiration in an unsaturated fatty acid auxotroph of Saccharomyces cerevisiae (KD115). Cells derepressed in the presence of oleic acid contained three to six times as much cytochrome per cell as those derepressed in the absence of unsaturated fatty acid or those derepressed with eicosaenoic acid. The delta9 isomer was the most efficient of the cis-octadecenoic acid isomers in supporting that increase, and eicosaenoic acid supported an increase at only 15% the rate observed with oleic acid. Derepression, even in the presence of oleic acid, proceeded only after a lag of 3 hours. When glucose was removed prior to the addition of oleate, the lag was reduced by the time of the preincubation with glycerol. This result suggests that some processes necessary for increased respiration can proceed in the absence of an added unsaturated fatty acid, but these processes apparently require certain levels of unsaturated acids in the pre-existing lipids, since they occurred in cells whose membranes contained 50 mol % oleate, but not in cells containing only 20 mol %. These processes leading to eventual increased respiration were inhibited by cycloheximide but not chloramphenicol, suggesting that protein synthesis on cytoplasmic ribosomes but not mitochondrial ribosomes were required. Derepression in the absence of oleate for 3 hours lessened the inhibition or respiration induction by ethidium bromide. This result indicates that the transcription of mitochondrial DNA necessary for the induction of respiration may have occurred in the absence of added unsaturated fatty acid, but that some subsequent event required added esterified unsaturated fatty acid.  (+info)

Stable ordering in Langmuir-Blodgett films. (4/97)

Defects in the layering of Langmuir-Blodgett (LB) films can be eliminated by depositing from the appropriate monolayer phase at the air-water interface. LB films deposited from the hexagonal phase of cadmium arachidate (CdA2) at pH 7 spontaneously transform into the bulk soap structure, a centrosymmetric bilayer with an orthorhombic herringbone packing. A large wavelength folding mechanism accelerates the conversion between the two structures, leading to a disruption of the desired layering. At pH > 8.5, though it is more difficult to draw LB films, almost perfect layering is obtained due to the inability to convert from the as-deposited structure to the equilibrium one.  (+info)

Arabidopsis seedling growth, storage lipid mobilization, and photosynthetic gene expression are regulated by carbon:nitrogen availability. (5/97)

The objective of the current work was to establish the degree to which the effects of carbon and nitrogen availability on Arabidopsis seedling growth and development are due to these nutrients acting independently or together. Growth of seedlings on low (0.1 mM) nitrogen results in a significant reduction of seedling and cotyledon size, fresh weight, chlorophyll, and anthocyanin content but a slight increase in endogenous sugars. The addition of 100 mM sucrose (Suc) to the nitrogen-depleted growth media results in a further reduction in cotyledon size and chlorophyll content and an overall increase in anthocyanins and endogenous sugars. Storage lipid breakdown is almost completely blocked in seedlings grown on low nitrogen and 100 mM Suc and is significantly inhibited when seedlings are grown on either low nitrogen or high Suc. Carbohydrate repression of photosynthetic gene expression can only be observed under low nitrogen conditions. Low (0.1 mM) nitrogen in the absence of exogenous carbohydrate results in a significant decrease in chlorophyll a/b-binding protein and ribulose bisphosphate carboxylase small subunit gene transcript levels. Thus, carbon to nitrogen ratio rather than carbohydrate status alone appears to play the predominant role in regulating various aspects of seedling growth including storage reserve mobilization and photosynthetic gene expression.  (+info)

Phospholipase A2 activity triggers the wound-activated chemical defense in the diatom Thalassiosira rotula. (6/97)

The activation of oxylipin-based chemical defense in the diatom Thalassiosira rotula is initiated by phospholipases that act immediately after cell damage. This lipase activity is responsible for the preferential release of free mono- and polyunsaturated fatty acids. Among these, eicosatetraenoic- and eicosapentaenoic acid are further converted by lipoxygenases to reactive defensive metabolites such as the antiproliferative alpha,beta,gamma,delta-unsaturated aldehydes 2,4-decadienal and 2,4,7-decatrienal. We show that mainly saturated free fatty acids are present in the intact diatom T. rotula, whereas the amount of free polyunsaturated eicosanoids is drastically increased in the first minutes after wounding. Using fluorescent probes, the main enzyme activity responsible for initiation of the aldehyde-generating lipase/lipoxygenase/hydroperoxide lyase cascade was characterized as a phospholipase A2. All enzymes involved in this specific defensive reaction are active in seawater over several minutes. Thus, the mechanism allows the unicellular algae to overcome restrictions arising out of potential dilution of defensive metabolites. Only upon predation are high local concentrations of aldehydes formed in the vicinity of the herbivores, whereas in times of low stress, cellular resources can be invested in the formation of eicosanoid-rich phospholipids. In contrast to higher plants, which use lipases acting on galactolipids to release C18 fatty acids for production of leaf-volatile aldehydes, diatoms rely on phospholipids and the transformation of C20 fatty acids to form 2,4-decadienal and 2,4,7-decatrienal as an activated defense.  (+info)

Effect of arachidonic and eicosapentaenoic acids on acute lung injury induced by hypochlorous acid. (7/97)

BACKGROUND: Hypochlorous acid (HOCl) is the main oxidant of activated polymorphonuclear neutrophil granulocytes (PMN) and generated by myeloperoxidase during respiratory burst. This study investigates the effects of HOCl on pulmonary artery pressure (PAP) and vascular permeability and characterises the influence of arachidonic acid (AA) and eicosapentaenoic acid (EPA) on the observed effects. METHODS: HOCl (500, 1,000, 2,000 nmol/min) was continuously infused into the perfusate (Krebs-Henseleit buffer solution, KHB). AA or EPA in subthreshold doses (both 2 nmol/min) or buffer were simultaneously infused using a separate port. PAP, pulmonary venous pressure (PVP), ventilation pressure, and lung weight gain were continuously recorded. The capillary filtration coefficient (Kf,c) was calculated before and 30, 60, and 90 minutes after starting the HOCl infusion. RESULTS: HOCl application resulted in a dose dependent increase in PAP and Kf,c. The onset of these changes was inversely related to the HOCl dose used. The combined infusion of AA with HOCl resulted in a significant additional rise in pressure and oedema formation which forced premature termination of all experiments. The combination of EPA with HOCl did not result in an enhancement of the HOCl induced rise in pressure and oedema formation. CONCLUSIONS: Changes in the pulmonary microvasculature caused by HOCl are differently influenced by omega-6 and omega-3 polyunsaturated free fatty acids, suggesting a link between neutrophil derived oxidative stress and pulmonary eicosanoid metabolism.  (+info)

Inhibitors of glycosphingolipid biosynthesis reduce transepithelial electrical resistance in MDCK I and FRT cells. (8/97)

Madin-Darby canine kidney (MDCK) I and Fisher rat thyroid (FRT) cells exhibit transepithelial electrical resistance (TER) values in excess of 5,000 Omega. cm(2). When these cells were incubated in the presence of various inhibitors of sphingolipid biosynthesis, a >5-fold reduction of TER was observed without changes in the gate function for uncharged solutes or the fence function for apically applied fluorescent lipids. The localization of ZO-1 and occludin was not altered between control and inhibitor-treated cells, indicating that the tight junction was still intact. Furthermore, the complexity of tight junction strands, analyzed by freeze-fracture microscopy, was not reduced. Once the inhibitor was removed and the cells were allowed to synthesize sphingolipids, a gradual recovery of the TER was observed. Interestingly, these inhibitors did not attenuate the TER of MDCK II cells, a cell line that typically exhibits values below 800 omega x cm(2.) These results suggest that glycosphingolipids play a role in regulating the electrical properties of epithelial cells.  (+info)

*Arachidic acid

... , also known as eicosanoic acid, is a saturated fatty acid with a 20-carbon chain. It is a minor constituent of ... It can be formed by the hydrogenation of arachidonic acid. Reduction of arachidic acid yields arachidyl alcohol. Arachidic acid ... Proximate and Fatty Acid Composition of Sabah Yellow Durian (Durio graveolens)] (PDF). Sains Malaysiana (in Malay). 42 (9): ...
Vegetable oil has fatty acids with carbon chains from 12 to 18 carbons long. Animal fat can have fatty acids with more than 18 carbons long. Generally a longer chain fatty acid melts at a higher temperature. The methyl ester of palmitic acid (hexadecanoic acid) has 16 carbons in the fatty acid chain and melts at 28-34 degrees celcius. Methyl stearate (octadecanoic acid methyl ester) has 18 carbons in the fatty acid chain of carbon atoms and melts at 39.1 degrees celcius. Eicosanoic acid methyl ester (eicosanoic acid) has 20 carbon atoms in a straight chain and the methyl ester melts at 54.5 degrees centigrade. Since like dissolves like, part of the eicosanoic acid methyl ester will be in solution below the melting point temperature. When I made biodiesel out of swine lard, pig fat and beef grease when the liquid was at a cool room temperature some of the higher melting methyl esters crystallized out and precipitated out as white crystals. Animal fat and grease has drawbacks for use as cool or ...
The particle-tracking technique presented here has been developed with the objective of tracking objects such as vesicles [32] and single proteins [33] in live-cell microscopy. The algorithm requires two or more simultaneous images of the specimen that are focused on different depths within the specimen, and a simple, inexpensive optical attachment to capture three such images simultaneously from a standard biological microscope has been demonstrated.. Experimental results (figure 3) indicate that a depth accuracy of approximately 10 nm has been achieved on an IX71 microscope, using high flux levels with a monochromatic signal and a standard 12-bit CCD. These results, the MVB analysis and the numerical simulations presented here all indicate that the multi-focus sharpness technique can give depth resolution of 20 nm or better in samples greater than 4 µm thick, with realistic flux levels and with an experimentally simple system. Flux levels used in the experimental measurements are unknown but ...
A source with adjustable coherence length is devised and used to illuminate an OCT for en-face imaging of the retina of the human eye in vivo. Two modes of operation are described. The added capability of adjusting the depth resolution in real time while imaging patients is discussed. The utility of the OCT err-face imaging with adjustable coherence length for diagnostic is illustrated by images taken from the eye of a volunteer. Similar images with those produced by scanning laser ophthalmoscopes are produced for the first time in real time using OCT.. ...
Additions of one to two equivalents of Lewis acids that include magnesium salts to free-radical reduction reactions involving ester functionalized radicals and (1R,2S,5R)-menthyldiphenyltin hydride 4, bis((1R,2S,5R)-menthyl)phenyltin hydride 5, tris((1R,2S,5R)-menthyl)tin hydride 6, bis((1R,2S,5R)-menthyl)-[8-(N,N-dimethylamino)naphthyl]tin hydride 12, bis((1R,2S,5R)-menthyl)-[1-((S)-N,N-dimethylaminoethyl)phenyl]tin hydride 13 or 3α-dimethylstannyl-5α-cholestane 14 result in remarkable enantioselectivities. Examples include (S)-naproxen ethyl ester 16, produced in 74% yield and greater than 99% ee at −78°C from the bromide and 5 in the presence of MgBr2, and ethyl (R)-N-trifluoroacetyl-D-phenylglycinate 18, obtained in 78% yield and 99% ee under identical conditions. Kinetic and computational studies provide insight into the origins of these observations ...
MENTHYL BENZOATE | C17H24O2 | CID 93868 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Validol is a mild sedative drug popular in Russia and other CIS countries. The active ingredient of Validolum tablets is menthol and Menthyl isovalerate
Auger Electron Spectroscopy (AES) is used to determine surface elemental compositions with both good lateral and depth resolution. All elements can be detected in the range Li to U with detection limits from 0.1 atomic% and above depending upon the element of interest.. The excellent lateral resolution permits imaging to the nanometre scale. A sequential combination of AES analysis and inert ion bombardment permits depth profiling to be carried out with nanometre depth resolution. AES is typically used for the analysis of metals and semiconductors but can also be used to interrogate flat glasses and ceramics.. Typical applications include:. ...
The present invention is aimed at providing a multilayer film having high quality and high processability which can be safely and stably produced. Such object of the present invention can be achieved by a multilayer film comprising a base material, a polymer resin layer and a metal deposited layer and/or a metal oxide deposited layer provided thereon, wherein the polymer resin layer contains a polymer produced by polymerization of an unsaturated compound having two or more ethylenic bonds and/or acetylenic bonds in one molecule and having neither acrylic group nor methacrylic group, in an amount of 80% by weight or more based on the polymer resin layer. The multilayer film according to the present invention can be used for a metallized packaging film having gas barrier properties or a metallized film for a capacitor and the like.
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100. Depth resolution [mm]. 10. TOF / FM. 1. PA:. 100. NIR. OCT/OPS. Depth resolution [ m]. 10. PA:. green. (C)M. 1. 1. 10. 100. 1. 10. 100. Depth [ m]. Depth [mm]. Imaging methods for hidden structures in turbid media (tissue). C(M) : (confocal) microscopy Slideshow 6910451 by colette-hammond
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Page contains details about tin-copper-nickel-phosphorus multilayer . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Our habit! Crack rambutan open. Suck in the mouth watering flesh, then threw away the seeds and peels.. Imagine it on industry level, canning. They are simply discarded as waste and treated as of no economic value. What a huge waste of resource! Of course, dumped organic materials eventually decay and become fertilizer. However, we want something more than that. Something we can sell for more profit.. Jirawat Eiamwat et. al. (2014) conducted a study on possible toxicity of rambutan seeds. Why?. Taken from their manuscript:. It is a potential source of edible fat, 4-9% of the whole fruit and 14 to 41% of the seed.. Rambutan seed fat is semi-solid at room temperature (25-27°C) and characterized by high levels of oleic acid between 36.8 and 42.0% and arachidic acid between 34.3 and 36.4% (Harahap et al., 2011; Sirisompong et al., 2011; Solís-Fuentes et al., 2010; Yanty et al., 2013). Due to the physical and chemical characteristics, rambutan seed fat may provide an economic advantage with ...
BioAssay record AID 751346 submitted by ChEMBL: Inhibition of mPGES-1 in human 1483 cells assessed as eicosanoid level incubated for 15 mins by LC/MS/MS analysis.
A composite, porous, liquid-permeable article is provided which is a multilayer structure of discrete, bonded layers of porous, expanded polytetrafluoroethylene (EPTFE). The composite has its interior and exterior surfaces coated with a perfluoro ion exchange polymer to render the composite hydrophilic so as to resist gas locking in aqueous media. Initially, the diaphragm may also contain a water-soluble surfactant to assist in initial water penetration into the pores of the composite. An improved electrolytic cell is provided having the composite diaphragm as the porous separator in the electrolysis of alkali halide solutions. The diaphragm is also useful as an improved filter medium.
Menthyl Acetate product is used in various industries such as perfumery, beauty products, drugs, cigarettes, pharmaceutical, etc.
Fat is back. Not that it ever really went away. Even when very low-fat diets were all the rage, experts recognized that certain fats were more harmful than others and some were even beneficial.. A common misperception is that omega-6 polyunsaturated fats, which are found in abundant amounts in most oils, including soybean oil, are pro-inflammatory. Meanwhile, it is thought that omega-3 polyunsaturated fats protect against inflammation. Chronic inflammation is believed to be a key process underlying many chronic diseases.. Back in the late 1970s, researchers suggested that the low incidence of heart disease among the Inuit of Canada and Alaska was related to their fat intake.1 Specifically, this population eats a diet high in the omega-3 fatty acid eicosanoic acid from fish and low in the omega-6 fatty acid arachidonic acid which is found in other types of meat.. The findings put omega-3 fats in the spotlight, giving rise to the popularity of fish oil supplements. But evidence in support of the ...
The effects of Sox21 gene deletion on hair lipids have been studied. For the cuticle-specific bound lipid 18-methyl eicosanoic acid (18-MEA), which was found to predominantly exist as the free form in Sox21(-/-) hair, total levels and distribution were unexpectedly unchanged. This indicates that while the biosynthesis of 18-MEA is unaffected, its covalent attachment to the cuticle surface is disrupted by loss of keratin-associated protein binding partners. Although the class compositions differed, the total ceramide (CER) levels were found to be comparable between Sox21(+/+) and Sox21(-/-) hairs. Deletion of the gene was also found to increase cholesterol sulphate (CS) levels. The biosynthesis process might be associated with cuticle keratinocyte maturation, because both CS and CERs are known bioactives in keratinocyte differentiation.
An irradiated multilayer film has a first layer and a second layer. The first layer is an outer heat seal layer containing a blend of a highly branched homogenous polymer and a semicrystalline polymer. The highly branched homogenous polymer has at least 40 branches per 1000 methylene groups, an Mw/Mn less than than 3.0, and a density of less than 0.89 g/cc. The highly branched homogenous polymer is present in an amount of from about 5 to 50 weight percent, based on layer weight. The semicrystalline polyolefin has a density of at least 0.90 g/cc. The semicrystalline polyolefin is present in an amount of from about 50 to 95 weight percent, based on total layer weight. The second layer contains a thermoplastic polymer in a crosslinked polymer network. A process for making a packaging article includes coextruding the first and second layers, irradiating the resulting multilayer film, and thereafter heat sealing the first layer to itself or another component of the packaging article.
The Quantera II is a unique scanning XPS microprobe that provides outstanding large area and unequaled micro-area spectroscopy performance. It is designed for rapid, spatially resolved elemental and chemical analysis of solid surfaces.. Capabilities of the Quantera II include: x-ray beam induced secondary electron imaging for rapid and confident location of small sample features, large and micro-area spectroscopy, chemical state XPS imaging, high performance sputter depth profiling, automated angle dependent depth profiling, turnkey insulator analysis, and a robotic sample handling platform to automate the analysis of multiple experiments or samples.. The Quantera II provides x-ray excited secondary electron imaging of the sample surface in a manor analogous to how an SEM generates a secondary electron image. This unique feature utilizes the scanned x-ray beam to generate secondary electrons that are collected by the Quanteras energy analyzer to provide images with topographical or surface ...
Stottrop-Textil is exhibiting the product MULTILAYER FILM gas- helium tight at HANNOVER MESSE from 01 to 05 Apr. 2019 in Hannover, Germany. Plan your visit to the trade fair and search for further products.
I used the LB RB targeting on the pc this beta and didnt think about targeting ,weapons, equipment or level spells till this mission beat me 8 times. One read and just target heal wait, target wait heal, and repeat. I beat first try. With mobs hitting for 25dmg my heals started at 40 by the last fight it was 80. Gotta love level sync on a rank 50 spell and equipment ...
Nowadays optical coherence tomography (OCT) is a rapidly developing technique with various applications, including biomedical imaging and diagnosis. One of the main shortcomings of current OCT techniques is low resolution and sensitivity to structural changes (typically about 10 microns). The best ultra-high resolution OCT techniques demonstrate sensitivity to structural changes and depth resolution of about 1 micron. Since many applications of interest (such as cancer) depend on structural changes at the nanoscale, OCT would definitely benefit from improved structural resolution and sensitivity. A new spectral encoding of spatial frequency (SESF) approach for quantitative characterization of the structure with nanoscale sensitivity has been developed recently. Ability to map axial structural information into each pixel of a 2D image with nanoscale sensitivity has been demonstrated and application of this approach to 3D microscopic imaging has been discussed. Here we present a novel technique, ...
Particle of the meeting was without any doubt hydrogen. This atom is hardest to remove in vacuum systems because it is very mobile and can be dissolved in bulk materials. It strongly influences materials properties. There were common detection problems: in welding studies hydrogen bubbles with the sample under oil were used for detection. Nuclear reaction analysis works very well and provides depth resolution, but is not easily accessible. Thermal desorption spectroscopy in vacuum is presumably the best practical method to detect hydrogen in the near surface region. Comments by Fred Dylla: To summarize the technical program of the workshop, comments are given below on the topics of (1) outgassing measurements; (2) the relationship between surface conditions and outgassing; (3) the status of modelling of outgassing phenomena; and (4) suggestions for future work to simulate progress in this field. Outgassing Measurements. There are two methods which have been used to measure outgassing rates: (1) ...
A further approach to using the high laser power exists in guiding the laser at high speeds. To achieve this, ILT scientists have developed a polygon scanner system: in it, a polygon mirror rotates at a high, constant revolution and guides the beam along a line on the workpiece. As the laser beam is guided along this line at the speed of sound, the high laser power is distributed evenly along the work piece. An axis perpendicular to this line moves the workpiece so that the area to be processed is clamped. The polygon scanner has a maximum aperture of 20 mm and reaches scanning speeds of up to 360 m/s at a focal length of 163 mm. Thus, it is able to process a surface area of 100 x 100 mm2 with a lateral resolution of 20 µm in 3 seconds. To generate 2.5 D structures, the material is ablated layer by layer at a depth resolution of up to 100 nm. In comparison to this new polygon scanner, galvanic meter scanners with comparable apertures are typically used at scanning speeds of 1-5 m/s. Currently, ...
The main aim of this work is to use the Coulomb explosion of small cluster beams to measure the dwell time of fragments traversing amorphous films. It has been demonstrated that, the thickness of thin films can be obtained with the so-called Coulomb depth profiling technique using relatively high energies clusters where the fragments are fully ionized after breakup. Here we demonstrate the applicability of Coulomb depth pro ling technique at lower cluster energies, where neutralization comes into play. The importance of wake forces is also discussed in this work. To that end, we used 50-175 keV/u H+2 molecular ions impinging on a 10nm TiO2 and on a 4nm Al2O3 lms and measured the energy of the backscattered H+ fragments with a high energy resolution using MEIS techinique. The e ect of the neutralization of the H+ fragments along the incoming trajectory before the backscattering collision is clearly observed at lower energies through the decrease of the energy broadening due to the Coulomb ...
Articles comprising multilayer coextruded films having polyester and polyamide layers adhered with a copolymer of polyester and a sulfonic acid or its derivative, having high oxygen barrier properties and temperature resistance that are capable of being heated to 425° F. in a conventional oven are disclosed. The articles are packages, such as bags, pouches, and casings that are particularly useful for packaging and cooking foodstuffs such as meat, poultry, seafood and the like.
Formulation: 96 tests: BNT77/BC05(Fab) HRP conj. antibodies from Takeda Chemical Industries,br /,Detection sensitivity of the kits is about 10 times higher than that of the conventional products and the dynamic range is from 0.1 to 20.0 pmol/L. Fab fragment of the labeled antibody is used as well so that the nonspecific binding is ...
Ent or allergic suggestion. Having problems in breathing and blinking of eyes continuously which cause in restlessness.-Hello. I think you have allergic conj...
Menthyl lactate - 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
Refsums disease is a rare inherited disease of lipid metabolism. The cardinal diagnostic features include polyneuritis, cerebellar ataxia, an atypical pigmentosa and a high CSF protein. The disorders is accompanied by the accumulation in the tissues
View Notes - Eicosanoid Synthesis from BCH 4024 at University of Florida. Molecular Biochemistry II Eicosanoid Synthesis Copyright 1999-2008 by Joyce J. Diwan. All rights reserved. Prostaglandins and
A second tomographic technique is developed which estimates the depth of a gamma-emitting isotope by observing the energy spectrum of the scattered photons emerging from the body. These spectra are dependent upon the depth and location of the internal source. Monte Carlo methods are used to compute surface energy spectra for Tc-99(m) point sources at different depths. From these noise-free results, a discrete response matrix is constructed to relate the input source depth to the corresponding output spectrum. Observed spectra with noise are then simulated independently by Monte Carlo calculations assuming various measurement times and source strengths. The source distribution is determined by solving the unfolding problem by the Method of Regularization. The effective depth resolution is seen to depend strongly upon measurement time. These results indicate that limited depth resolution can be obtained from a single view of the object ...
The line speed was 6.2 m/min. Rolls of film were produced in a width of 135 mm and a length of 10 m.Multilaver preparation: strips of 15 mm width were cut from the prepared films in the machine direction. The samples were heat sealed on a Sentinel Heat Sealer (Packaging industry, Mass., USA, Model 12AS) with an upper heated bar and a lower flexible bar under the following conditions: pressure 3 bar, temperature 160° C. and sealing time 1 second. To avoid sticking of the tie layer to the heated bar, a 20 μm polyester film (commercially available fromE. I. du Pont de Nemours and Company, Wilmington, Del. under the trademark Mylar®) was used to cover each sample on the side of the tie layer (Mylar®/tie layer/PLA) and heat sealing was performed on the side of the Mylar® layer.Comparative multilayer film structures (C1-C3) and the multilayer film structures of the invention (E1-E2) had the following structures:Comparative Example 1 (C1): a two-layer structure comprising a tie layer based on ...
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M. Taylor, D. Scurr, M. Lutolf, L. Buttery and M. Zelzer et al. 3D chemical characterization of frozen hydrated hydrogels using ToF-SIMS with argon cluster sputter depth profiling. 20th International Conference on Secondary Ion Mass Spectrometry (SIMS XX), Seattle, WA, SEP 13-18, 2015. ...
CONJ 401-403. CONJ 531 Signaling Mechanisms. NBIO 402 Neuropathophysiology. NEURO 501 Molecular & Cellular Neurobiology. NEURO/PBIO 504 Biophysics of Nerve, Muscle, and Synapse. NEURO 527 Critical discussion of fundamental issues in classic and contemporary neuroscience. NEURO/PBIO 545 Quantitative methods in neuroscience. PBIO 509/NEURO 541 Neuroendocrinology. PBIO 519 Postdoc Lectures. PBIO 525 Autumn Journal Club. PBIO 550 Calcium Signaling. PBIO 558 Concepts and Mechanisms in Mitosis. PBIO 559 Neurobiology of Disease. ...
goat, anti-human, igg, fc, f(ab)2, fragment, affinity, purified, tritc, conjugated, min., cross-reactivity, to, bovine, horse, mouse, or, rabbit, serum, proteins, mouse, igg1, Goat anti-Human IgG Fc, F(ab)2 Fragment, AS16 3358, TRITC conju
goat, AS16 3426, (h&l), affinity, purified, dylight , 488, conjugated, min., cross-reactivity, to, bovine, goat, human, rabbit, rat, igg, (higly, absorbed, against, rat, igg), Goat anti-Mouse IgG (H&L), Affinity purified, DyLight 488 conjugat
Eicosanoid biosynthesis begins when cell is activated by mechanical trauma, cytokines, growth factors or other stimuli. (The stimulus may even be an eicosanoid from a neighboring cell; the pathways are complex.) This triggers the release of a phospholipase at the cell membrane. The phospholipase travels to the nuclear membrane. There, the phospholipase catalyzes ester hydrolysis of phospholipid (by A2) or diacylglycerol (by phospholipase C). This frees a 20-carbon essential fatty acid. This hydrolysis appears to be the rate-determining step for eicosanoid formation free fatty acid is oxygenated along any of several pathways ...
Eicosanoid biosynthesis begins when cell is activated by mechanical trauma, cytokines, growth factors or other stimuli. (The stimulus may even be an eicosanoid from a neighboring cell; the pathways are complex.) This triggers the release of a phospholipase at the cell membrane. The phospholipase travels to the nuclear membrane. There, the phospholipase catalyzes ester hydrolysis of phospholipid (by A2) or diacylglycerol (by phospholipase C). This frees a 20-carbon essential fatty acid. This hydrolysis appears to be the rate-determining step for eicosanoid formation free fatty acid is oxygenated along any of several pathways ...
clearcoeff.m - absorbs the physical coefficient of the tensor train into its cores. conj.m - element-wise conjugation of a matrix in a TT representation. ctranspose.m - conjugate-transpose of a matrix in a TT representation. diag.m - mimics diag for matrices. If an input is ttclass matrix, returns a ttclass vector (matrix with 1 column) containing the diagonal. If an input is a vector, returns a diagonal matrix. dot.m - mimics the dot product operation for matrices. full.m - mimics the corresponding operation for sparse matrices. Computes all Kronecker products and returns full matrix. May result in out-of-memory errors for large matrices. hdot.m - the Hadamard dot product operation. ismatrix.m - returns true for non-empty TT objects. isnumeric.m - returns true for non-empty TT objects isreal.m - returns true for real-valued ttclass objects. kron.m - Kronecker product of tensor train representation of matrices. mean.m - mimics the corresponding operation for matrices. If the input is a ttclass ...
This project was designed with the primary goal of providing more information on the shape of the dose-response curve for hand repetition with respect to specific medical outcomes. A cross-sectional study was conducted in which workers exposure to repetition and other physical stressors was quantified using a standardized observational method based on a 0 to 10 rating scale, and analyzed in conj
Blends having improved adhesion to each other when coextruded into multilayer films, such films, film-packages such as pouches from such films, and methods for making and using the films and film-packages are disclosed and claimed. Improved adhesion between layers results from adjusting the components of the blends of the layers. In addition, improved adhesion between layers results from reducing the temperature of the chill roll in the cast coextrusion process.
A multilayer printed circuit board has an IC chip 20 included in a core substrate 30 in advance and a transition layer 38 provided on a pad 24 of the IC chip 20. Due to this, it is possible to electri
Rhodopsin, the light-sensing molecule in the outer segments of rod photoreceptors, is responsible for converting light into neuronal signals in a process known as phototransduction. After absorbing a photon, rhodopsin undergoes conformational changes with a dramatic shift in its absorption spectrum: the maximum absorption peak shifts from 500 nm to 380 nm. This absorption change, known as rhodopsin photo-bleaching, provides a contrast to image rhodopsin. We report a novel 3-D retinal densitometry technique based on visible-light OCT for in vivo molecular imaging of rhodopsin. The system uses a light source centered at 532 nm closing to the peak absorption wavelength. With a bandwidth of 9.3 nm the system achieved a depth resolution of 13 micro-meters in air. The depth resolution allows the visualization and segmentation of the location where the absorption change occurs and provides an accurate assessment of rhodopsin content.. ...
Feline idiopathic cystitis (FIC) is a common inflammatory condition of the bladder that affects young to middle aged cats with unknown cause. Because there may be different pathological mechanisms that could cause FIC, there is a critical need to identify the key pathogenic factors in FIC. Eicosanoids are potent lipid mediators involved in ... read more the initiation and resolution of inflammation and in the maintenance of the normal health of the urothelium. Recent studies suggest that FIC may be associated with alterations in bladder eicosanoid metabolism. The altered expression of genes encoding key enzymes involved in the metabolism of eicosanoids could be important in the pathogenesis of FIC. We hypothesized that expression of the mRNAs for these enzymes would differ between affected and healthy cats. In order to test this hypothesis, mRNA was isolated from healthy and FIC cat bladders (obtained by cystotomy and embedded in formalin-fixed paraffin), as well as urolith bladders as a general ...
Variable-angle spectroscopic ellipsometry was used to determine nondestructively the porosity depth profile and thickness of thin porous silicon layers produced by anodization of p +-doped silicon wafers. A porosity graded-layer model is presented and used in the analysis of the material. In the porosity graded-layer model an inhomogeneous layer is built up by several thin sublayers with the porosity changing slightly from one sublayer to the next. Results from the ellipsometry analysis and from transmission electron microscopy reveal inhomogeneous layers whose porosity and thereby optical properties change with their depth in the layers.. © 1998 Optical Society of America. Full Article , PDF Article ...
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Silicone elastomer for closures and tubing), bestt example linolenic acid and arachidic acid). 5 mg of apigenin 7-glucoside R in Best generic tamoxifen mL of methanol R. For the О -rays of 99m Tc with energy 140 keV this is easily achieved with lead.
Hochschulschriften. Application of secondary ion mass spectrometry (SIMS) in the development of new materials / Martin Rosner. 2003
A multilayer structure, especially a multilayer film, for packaging alkaline, or caustic, compositions. The multilayer structure consists essentially of: (1) a first layer of an acid functional polymer that is soluble in aqueous alkaline medium, (2) a second layer of a partially hydrolyzed, thermoplastic PVOH, and, optionally, (3) a third layer of a fully hydrolyzed, thermoplastic PVOH.
Contrast agents play an important role in the study of biological tissues and whole organisms, since they enable visualization of functional structures. Fluorescent contrast agents also enable specific targeting in therapeutic approaches. Developing optimized contrast agents is central to optimizing the performance of both imaging and therapy. The ideal contrast agent for optical microscopy combines high resolution, specific targeting of functional groups, 3D imaging (depth resolution), low toxicity, low bleaching (long observation time at high signal), and high signal to noise (low background). Traditional organic dyes and fluorescent proteins are excited in the ultraviolet (UV) or blue spectral region, and emit at a longer-wavelength that is Stokes-shifted. The use of the short-wavelength excitation leads to a short penetration depth of the excitation light and give rise to autofluorescence, photobleaching and photodamage to biological specimens. It is thus primarily suited to pathological and ...
We present a low-coherence technique for the measurement of concentrations in aqueous solutions. It is based on a second-order dispersion measurement using the phase of the Fourier transform of the interferogram term obtained with an unbalanced Michelson interferometer. We demonstrate this approach by concentration measurements of aqueous mixtures of NaCl and glucose solutions. Results show errors between a few percent for high concentrations, up to 31% for low concentrations. The application of such a technique in OCT might require ultrahigh depth resolution and/or other scattered photon rejection techniques.. © 2007 Optical Society of America. Full Article , PDF Article ...
A laminated film which comprises a pair of coextruded multilayer inflation film layers disposed symmetrically and joined by blocking, wherein the inner layers are joined by blocking are composed of a resin having a Vicat softening point of lower than 120 C., and a method of manufacturing the above film which comprises extruding a coextruded multilayer inflation film from an extruder at a temperature of the molten resin forming the inner layer being higher than the Vicat softening point of the resin by more than 50 C., and joining the inner layer of the inflation film by blocking. A laminated film laminated by blocking can stably be produced, and the laminated film is excellent in physical strength and bag rupture strength.
nam: (conj.) for (= because, but in a less immediate and explicit way than pro ke. Introduces a sentence or subordinate clause which adduces reason, proof or justification). Esas matino, nam la uceli kantas: it is morning for (not because: pro ke) the birds are singing. Ex.: Vu ne trovos il en la domo, nam me jus vidis il en la strado. Vu ne povas vidar il, nam il esas departinta de longe. Lavez vua manui, nam li esas sordida. Me ne povas amar ilu, nam il odias me. Ni irez lente adheme, nam balde esos nokto. V. exp.: Nam, pro ke: Pro ke introduktas dependanta propoziciono, qua kontenas motivo o pruvo por la chefa propoziciono prieranta o sequanta: nam introduktas chefa frazo, qua kontenas anke motivo o pruvo, ma nur por preiranta frazo, o tacita penso. Ex.: Pro ke pluvas, me ne ekiros. Me ne ekiros nam pluvas; III-223; cf. or. Ta du konjuncioni interdistingesas precize quale Angla for e because. La Angla linguisto Sweet skribas pri li tale: La du precipua konjuncioni kauzala esas pro ke, qua ...
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BRK PACKWELL PVT. LTD. - Exporter, Manufacturer & Supplier of Multilayer Laminated Tube Multilayer Laminated Tube,Multilayer Tube, India
The Eicosanoids Edited by Peter Curtis-Prior and Anglia Polytechnic http://media.john.com.au/product_data/coverImage300/40/04714898/0471489840.jpg PAGES: 655 EDITION: 1st Edition (2004) LANGUAGE: English
Page contains details about monolayer MoS2/hBN/VO2/SiO2/Si multilayer . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
Dynamic Secondary Ion Mass Spectrometry. Essential Knowledge Briefing Dynamic Secondary Ion Mass Spectrometry Surface analysis is the cornerstone of a wide range of scientific disciplines, from
The present invention provides a multilayer film having an active oxygen barrier multilayer core comprising at least one of 1) an active oxygen barrier layer is sandwiched between two passive oxygen barrier layers, or 2) a passive oxygen barrier layer is sandwiched between two active oxygen barrier layers. In one embodiment, the active barrier layer comprises a composition that is a blend of a thermoplastic resin (A) having carbon-carbon double bonds substantially in its main chain, a transition metal salt (B), and an oxygen barrier polymer (C). In some embodiments the active barrier layer may also include a compatibilizer (D). The passive oxygen barrier layers help to maintain the oxygen barrier properties of the multilayer film after the oxygen absorbing capacity of the active barrier layer has been exhausted. As a result, the useful shelf life of the film can be extended.
Bulk heterojunction organic solar cells (BHJs) with ZnO nanoparticles buffer layer between the active layer and the aluminum (Al) top electrode were fabricated.
Press Release issued Dec 19, 2016: Jojoba oil is the liquid which is extracted from the seed of jojoba plant. Jojoba seeds are mainly produced in Arizona, California, and in Mexico. Jojoba seed can produce 50.0% of its weight of oil, which mainly contains free fatty acids like palmitic acid, stearic acid, oleic acid, arachidic acid, behenic acid, erucic acid, eicosenoic acid, lignoceric acid, and nervonic acid. Due to high content of free fatty acids in jojoba oil derivatives are beneficial for skin, due to which jojoba oil derivatives are mainly used in cosmetics and personal care products.
Propargylhexacarbonyldicobalt complexes with fructopyranose ligands were prepared and investigated for cytotoxicity and cellular uptake using the MCF-7 human breast cancer cell line. Furthermore, their influence on eicosanoid metabolism was evaluated. The aim was the development of new cytotoxic cyclooxygenase (COX)/ lipooxygenase (LOX) inhibitors which combine essential structural features of the two metal based: drugs auranofin, a gold-glucose complex, and Co-ASS, a propargylhexacarbonyldicobalt derivative of acetylsalicylic acid. Both compounds showed antiproliferative effects in tumor models in previous studies. This might be the result of the inhibition of the COX and LOX enzymes which is discussed as a promising strategy for the design of new cytostatics. The accomplished studies showed that the antiproliferative effects of the target compounds depended on the number of protecting groups and correlated with the cellular uptake. The ability of the fructopyranose complexes and the references ...
Lipid mapping in human dystrophic muscle by cluster-time-of-flight secondary ion mass spectrometry imaging.. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Foreword ....................................................... xi Preface ...................................................... xiii Acknowledgments ............................................... xvi List of Constants ............................................ xvii 1 Introduction ............................................... 1 1.1 Matter and The Mass Spectrometer ........................... 1 1.2 Secondary Ion Mass Spectrometry ............................ 4 1.2.1 History ............................................. 6 1.2.2 Physical Basis ...................................... 8 1.2.2.1 Sensitivity and Detection Limits ................ 9 1.2.3 Application Fields ................................. 12 1.3 Summary ................................................... 18 SECTION I. PRINCIPLES .......................................... 21 2 Properties of Atoms, Ions, Molecules, and Solids .......... 23 2.1 The Atom .................................................. 23 2.1.1 Atomic Structure ...
Secondary Ion Mass Spectrometry (SIMS) is a mature surface analysis technique with a vast range of applications in Materials Science. In this review article the SIMS process is described, the fundamen
A transparent heat shrinkable, multilayer film comprising: (a) at least one layer comprising a vinylidene chloride-vinyl chloride copolymer; and (b) at least one layer comprising a thermoplastic polymer; and (c) a sufficient amount of a dioxazine violet pigment to provide a film which retains an aesthetically acceptable violet appearance despite exposure to elevated temperatures and/or irradiation.
Very little is known about the functional roles of eicosanoid metabolism in skeletal muscles, even during normothermic conditions, though literature is emerging. With regard to COX, skeletal muscle cells contain both COX-1 and COX-2, and both of these enzymes are present in oxidative and nonoxidative muscle fibers, as well as in surrounding vessels (55). The primary products produced are prostaglandin PGE2 and TxB2, with considerably more PGE2 being formed (55). Although there is some evidence that products formed by COX can modestly affect contractile function (55), their primary roles in physiology are not known. COX products are able to cause vasodilation or vasoconstriction, depending on which product is produced in higher amounts (15), and it is possible that this balance between products may be altered during heat stress. Thus, it is also possible that production of COX products in heat stress could affect heat dispersal mechanisms by influencing conductance of surrounding vessels. This ...
in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2016), 371. Particle-Induced Gamma-ray Emission (PIGE) is a powerful analytical technique that exploits the interactions of rapid charged particles with nuclei located near a sample surface to determine the ... [more ▼]. Particle-Induced Gamma-ray Emission (PIGE) is a powerful analytical technique that exploits the interactions of rapid charged particles with nuclei located near a sample surface to determine the composition and structure of the surface regions of solids by measurement of characteristic prompt γ rays. The potential for depth profiling of this technique has long been recognized, however, the implementation has been limited owing to insufficient knowledge of the physical data and lack of suitable user-friendly computer codes for the applications. Although a considerable body of published data exists in the nuclear physics literature for nuclear reaction cross sections ...
Markus Wilde is the author of this article in the Journal of Visualized Experiments: Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
In a top emission structure, there has been a problem in that a wiring, a TFT, or the like is provided in regions other than a light emitting region so that light reflected by the wiring reaches eyes of an observer. The present invention prevents light that is reflected by a wire from reaching eyes of an observer by providing a light-absorbing multilayer film (61) in regions other than a light emitting region. Specifically, the light-absorbing multilayer film (61) is used as an upper layer of a partition wall (also called as a bank or a barrier) that covers ends of a first electrode (66 b) whereas an organic resin film (67) is used as a lower layer of the partition wall. The partition wall in the present invention is characterized by being a laminate of three or more layers formed of different materials.
An eicosanoid is a lipid consisting of twenty or more carbons. Lipids as molecules are extremely long amphipathic hydrocarbon chains, between two and tw...
An eicosanoid is a lipid consisting of twenty or more carbons. Lipids as molecules are extremely long amphipathic hydrocarbon chains, between two and tw...
Single cell imaging mass spectrometry opens up a complete new perspective for strategies in toxicological risk assessment and drug discovery. In particular, time-of-flight secondary ion mass spectrometry (ToF-SIMS) with its high spatial and depth resolution is becoming part of the imaging mass spectrometry toolbox used for single cell analysis. Recent instrumentation advancements in combination with newly developed cluster ion guns allow 3-dimensional reconstruction of single cells together with a spatially resolved compound location and quantification on nanoscale depth level. The exact location and quantification of a single compound or even of a set of compounds is no longer restricted to the two dimensional space within single cells, but is available for voxels, a cube-sized 3-dimensional space, rather than pixels. The information gathered from one voxel is further analysed using multivariate statistical methodology like maximum autocorrelation factors to co-locate the compounds of interest within
A model that describes the concentration of photothermal (light-to-heat converters) compounds as a function of depth in a turbid medium is developed. The system consists of a pump laser (808 nm modulated at 400 Hz), which heats a photothermal compound, and a phase sensitive spectral domain optical coherence tomography system, which detects the changes in the optical path length of the sample induced by the temperature increase. The model is theoretically derived and the coefficients are empirically determined using solid homogeneous gel phantoms. The model is validated by reconstructing the concentration of a photothermal compound in thick single and double layer solid phantoms ...
Soft magnetic composites (SMCs) are designed for the sustainable industrial production of uniform isotropic components with three-dimensional magnetic properties. The nanocoating covering the surface of water-atomized iron powder is the paramount feature of SMC technology that gives the material the high resistivity needed for minimizing the negative effects of eddy currents. An analysis of its initial state/composition on a micro level and any changes during further compaction and heat treatment is thus of great importance. Therefore, a method for the evaluation of composition and thickness of such insulating coatings was developed in this study. High resolution imaging combined with surface analytical and depth profiling techniques (high resolution scanning electron microscopy (HR SEM) with energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy) were used. Analyses were performed on commercially available SMC powder grades having a phosphate-based coating. Depth profiling was
This article investigates the influence of the organic film thickness on the characteristic and molecular ion yields of polystyrene (PS), in combination with two different substrates (Si, Au) or gold condensation (MetA-SIMS), and for atomic (Ga(+)) and polyatomic (C(60)(+)) projectile bombardment. PS oligomer (m/z approximately 2000 Da) layers were prepared with various thicknesses ranging from 1 up to 45 nm on both substrates. Pristine samples on Si were also metallized by evaporating gold with three different thicknesses (0.5, 2, and 6 nm). Secondary ion mass spectrometry was performed using 12 keV atomic Ga(+) and C(60)(+) projectiles. The results show that upon Ga(+) bombardment, the yield of the fingerprint fragment C(7)H(7)(+) increases as the PS coverage increases and reaches its maximum for a thickness that corresponds to a complete monolayer ( approximately 3.5 nm). Beyond the maximum, the yields decrease strongly and become constant for layers thicker than 12 nm. In contrast, upon ...
A miniature meanderline sensor coil which extends the capabilities of nuclear magnetic resonance (NMR) to provide analysis of thin planar samples and surface layer geometries. The sensor coil allows standard NMR techniques to be used to examine thin planar (or curved) layers, extending NMRs utility to many problems of modern interest. This technique can be used to examine contact layers, non-destructively depth profile into films, or image multiple layers in a 3-dimensional sense. It lends itself to high resolution NMR techniques of magic angle spinning and thus can be used to examine the bonding and electronic structure in layered materials or to observe the chemistry associated with aging coatings. Coupling this sensor coil technology with an arrangement of small magnets will produce a penetrator probe for remote in-situ chemical analysis of groundwater or contaminant sediments. Alternatively, the sensor coil can be further miniaturized to provide sub-micron depth resolution within thin films or to
Ion microprobes, also known as secondary ion mass spectrometers (SIMS), use a finely focused ion beam to probe a selected sample domain. A small percentage of the material sputtered from the polished surface of the sample is ionized, and these ions are accelerated into a mass spectrometer where they are separated according to their mass-over-charge ratio. An important characteristic of SIMS is its high sensitivity compared to other microbeam sampling techniques: the ability to count individual ions results in detection limits in the parts-per-billion range for many elements. Also the fact that ions derived from the sample are separated by their mass-over-charge ratio allows isotopic analyses to be performed on test portion masses that can be as small as 200 picograms. Ion microprobes offer six modes of operation for geoscience applications: Isotopic Analyses: Our 1280-HR instrument provides an analytical repeatability down to below 0.2‰ (1sd) for many major elements in a variety of crystalline ...
A tear resistant film comprises more than five layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile polymeric material, and optionally, an intermediate material. The stiff polyester or copolyester is oriented in at least one direction. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.
Three of these costs( download modeling and identification of, clothianidin, comprehensive) experience commodities derived to kill mathematics, women, and leafminers, and one is a therapy( risk). Chlorantraniliprole is related to be methidathion rates. The download modeling and identification of people read with age, armed on eicosanoid studies to those reduced with the pests, banked right from 2014 but the cell of vessels been were only, Improving that it explained Considering stretched at the higher centimeters( Figures 38, A-40, and A-41). d 37, JPG: Eyepieces of healing performance found by all AIs in the Mediterranean acids of rows from 1995 to 2015. liquid download modeling and DANCING factors in the likely San Joaquin Valley in 2015 lay an rare average in issues cause. Chlorpyrifos is introduced as email or hypercoagulable bissauPublic drugs to understand Number DNA of hypoparathyroidism radiation contentAdvances. EPA has trained a download modeling and identification of linear parameter ...
Factsheet on this disorder of fatty acid oxidation, its description, pathogenesis, presentation, other features, differential diagnosis, investigations, management, complications and prognosis. ...
It is the smart notes on How Eicosanoids are synthesizing in Human body, This notes explained with suitable images. Eicosanoids synthesis is very effective.
Muzikante I.; Gerca L.; Jurgis A.; Gustina D.; Markava E.; Stiller B.; Brehmer L. Light-induced switching effect in Langmuir-Blodgett mono- and multilayers of some azobenzene derivatives . Book of abstr., Electrical and related properties of organic solids, Szklarska Poreba, June 26-30, 1999; Biuletyn Instytutu chemii fizycznej i teoretycznej Politechniki Wroclawskiej, 8: Wroclaw, Poland, 1999; 112 ...
Muzikante I.; Gerca L.; Jurgis A.; Gustina D.; Markava E.; Stiller B.; Brehmer L. Light-induced switching effect in Langmuir-Blodgett mono- and multilayers of some azobenzene derivatives . Book of abstr., Electrical and related properties of organic solids, Szklarska Poreba, June 26-30, 1999; Biuletyn Instytutu chemii fizycznej i teoretycznej Politechniki Wroclawskiej, 8: Wroclaw, Poland, 1999; 112 ...
Study Flashcards On Eicosanoids at Cram.com. Quickly memorize the terms, phrases and much more. Cram.com makes it easy to get the grade you want!
Can you name the Eicosanoids/Associated Drugs by Function? Test your knowledge on this science quiz to see how you do and compare your score to others. Quiz by LunaLeMAG
0023] Suitable feedstocks to be employed can include any glycerides, lipid material from a plant or vegetable or an animal, as well as recovered lipids. Suitable examples of lipid materials include, but are not limited to, fats, oils, fatty acids, and glycerides. Suitable fatty acids include, but are not limited to, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, octadecenoic acid, linoleic acid, eicosanoic acid, isostearic acid and the like, as well as mixtures of two or more thereof. Suitable examples of plants and vegetables include, but are not limited to, sunflower, soy, rape, corn, canola, camelina, coconut, palm, olive, jatropha, algae, sunflower, dryland mustard and safflower. Suitable examples of animals include, but are not limited to, cows, sheep, rabbits, pigs, whales, and other rendered animals. Suitable examples of recovered lipids include, but are not limited to, yellow grease, brown grease, Dissolved Air Flotation ("DAF"), and other waste ...
Phytanic acid (3,7,11,15-tetramethylhexadecanoic acid) is a phytol-derived branched-chain fatty acid present in dietary products. Phytanic acid increased uncoupling protein-1 (UCP1) mRNA expression in brown adipocytes differentiated in culture. Phytanic acid induced the expression of the UCP1 gene promoter, which was enhanced by co-transfection with a retinoid X receptor (RXR) expression vector but not with other expression vectors driving peroxisome proliferator-activated receptor (PPAR) α, PPARγ or a form of RXR devoid of ligand-dependent sensitivity. The effect of phytanic acid on the UCP1 gene required the 5′ enhancer region of the gene and the effects of phytanic acid were mediated in an additive manner by three binding sites for RXR. Moreover, phytanic acid activates brown adipocyte differentiation: long-term exposure of brown preadipocytes to phytanic acid promoted the acquisition of the brown adipocyte morphology and caused a co-ordinate induction of the mRNAs for gene markers of ...
Time-of-Flight secondary ion mass spectrometry (TOF-SIMS) is a very sensitive surface analytical technique, well established for many industrial and research applications. TOF-SIMS is an acronym for the combination of the analytical technique SIMS (Secondary Ion Mass Spectrometry) with Time-of-Flight mass analysis (TOF).
Nodulation is the first, and qualitatively predominant, cellular defense reaction to bacterial infections in insects. We tested the hypothesis that eicosanoids also mediate nodulation reactions to bacterial challenge in adults of a social insect, the honey bee, Apis mellifera. Treating newly-emerged experimental bees with the eicosanoid biosynthesis inhibitor, dexamethasone, impaired nodulation reactions to bacterial infections, and the influence of dexamethasone was reversed by treating infected insects with arachidonic acid, an eicosanoid precursor. Several other eicosanoid biosynthesis inhibitors, including the cyclooxygenase inhibitor, indomethacin, and the dual cyclooxygenase/lipoxygenase inhibitor, phenidone, also impaired the ability of experimental honeybees to form nodules in reaction to bacterial challenge. The influence of phenidone on nodulation was expressed in a dose-dependent manner. However, in experiments with older honey bees foragers, similar bacterial challenge did not evoke
Dean, P., Gadsden, J. C., Richards, E. H., Edwards, J. P., Charnley, A. K. and Reynolds, S. E., 2002. Modulation by eicosanoid biosynthesis inhibitors of immune responses by the insect Manduca sexta to the pathogenic fungus Metarhizium anisopliae. Journal of Invertebrate Pathology, 79 (2), pp. 93-101.. ...
Cottonseed oil is wealthy in palmitic acid (22-26), oleic acid (15-20), linoleic acid (49-58) and 10 mixture of arachidic acid, behenic acid and lignoceric acid. twilightyears-vegetables1Carbohydrates, ought to contribute about 60 p. Salad is a healthier option, however darkish greens are usually not so palatable. Exercise just isnt all about heavy strenuous exercises. Effectivity of carbohydrates can cause the slur of post graduate diploma in dietetics and nutritionist in nutritional information on mini tootsie pops physique, it will probably results into a situation often known as ketosis. Thu thе miracle alkaline weight loss programаlo referred to as pH miracle dietappears tо match thе finest оur physique design, а t helps neutralize thе acidic wastes аnd helps flush ruffles sour cream and onion chips nutrition facts оut afcts thе body. I dont advocate excessive quantities of exerciseruffles sour cream and onion chips nutrition facts this is an important point. It is widely ...
Time of flight secondary ion mass spectrometry (ToF SIMS) is one of the most powerful characterization tools allowing imaging of the chemical properties of various systems and materials. It allows precise studies of the chemical composition with sub-100-nm lateral and nanometer depth spatial resolution. However, comprehensive interpretation of ToF SIMS results is challengeable, because of the data volume and its multidimensionality. Furthermore, investigation of the samples with pronounced topographical features are complicated by the spectral shift. In this work we developed approach for the comprehensive ToF SIMS data interpretation based on the data analytics and automated extraction of the sample topography based on time of flight shift. We further applied this approach to investigate correlation between biological function and chemical composition in Arabidopsis roots. ...
Eicosanoids are oxygenated metabolites of three C20 polyunsaturated fatty acids, mainly arachidonic acid (AA; 20:4n-6), but also 20:3n-6 and 20:5n-3. Aside from their importance in biomedicine, eicosanoids act in invertebrate biology. Prostaglandins
Wiley Online Library is migrating to a new platform powered by Atypon, the leading provider of scholarly publishing platforms. The new Wiley Online Library will be migrated over the weekend of February 24 and 25 and will be live on February 26, 2018. For more information, please visit our migration page:http://www.wileyactual.com/WOLMigration ...
Composite magneto-dielectric materials have been investigated over the years because of their potential applications in RF and microwave devices as the dielectric constant and permeability can be individually changed in these materials. In the recent past, there is a renewed interest in systems classified as ferroelectromagnets or multiferroics, which possess simultaneous ferroelectric and magnetic ordering as well as interesting magnetoelastic phenomena. In all these ferrite-ferroelectric materials, the coupling between the permeability (μ) of the magnetically ordered phase and permittivity (e) of the ferroelectric phase make them attractive candidates for multifunctional applications. Baâ .â Srâ .â Tiâ (BSTO) is a ferroelectric with potential applications in tunable filters, antennas, and thin film capacitors. BaFeâ â Oâ â (BaF) is a hard ferromagnet with large in-plane anisotropy which makes it promising for use in microwave and RF devices that need permanent magnets for biasing
TY - JOUR. T1 - Characterization of copper chloride cluster ions formed in secondary ion mass spectrometry. AU - Groenewold, G. S.. AU - Appelhans, A. D.. AU - Gresham, G. L.. AU - Ingram, Jani C. AU - Shaw, A. D.. PY - 1998/10/19. Y1 - 1998/10/19. N2 - The surfaces of copper chloride salts were investigated using three different secondary ion mass spectrometry (SIMS) instruments: a quadrupole instrument equipped with an ReO4 primary ion, a time-of-flight (ToF) instrument equipped with a Ga+ primary ion, and an ion trap instrument equipped with ReO-4. The research was conducted to identify copper chloride species sputtered from the surface of the copper chloride salts and to attempt to relate these species to the composition of the salt. Rich anion spectra were recorded using all three instruments for CuCl2 and CuCl, which were dominated by CuCl-3 and CuCl-2. Other copper chloride adduct ions were also observed at higher masses. An examination of these ions revealed Cu primarily in the +1 and +2 ...
Electrodeposited natural uranium films prepared by electrodeposition from solution of uranyl nitrate UO2(NO3)2·6H2O on stainless steel discs in electrodeposition cell. Solutions of NaHSO4, and Na2SO4 and electric current from 0.50 up to 0.75 A were used in this study. Recalculated weights and surfaces weights of 238U from the alpha activities and secondary ion mass spectrometry (SIMS) intensities resulted in a linear regression. A dependency between of 238U surfaces weights recalculated from alpha activities and signal intensity of 238U in SIMS was investigated in order to determine a potential of SIMS in quantitative analysis of surface samples containing uranium. In the SIMS spectra of electrodeposited uranium films we found that upper layer consist not only from isotopes of uranium (ions 234U+, 235U+, and 238U+). In the positive polarity SIMS spectra, various molecules ions of uranium were suggested as UH+, UH2+, UO+, UOH+, UO2+, UO2H+, UO2H2+, as well as possibly ions UNO+ and UNOH+. ...
The evolution of CMOS Image Sensors (CIS) and the future prospect of a "sensing" world utilizing advanced imaging technologies promise to improve our quality of life by sensing anything, anywhere, anytime. Charge Coupled Device image sensors replaced video camera tubes, allowing the introduction of compact video cameras as consumer products. CIS now dominates the market for digital still cameras created by its predecessor and, with the advent of column-parallel ADCs and back-illuminated technologies, outperforms them. CISs achieve better signal to noise ratio, lower power consumption, and higher frame rate. Stacked CISs continue to enhance functionality and user experience in mobile devices, a market that currently comprises over one billion new image sensors per year. CIS imaging technologies promise to accelerate the progress of sensing world by continuously improving image quality, extending detectable wavelengths, and further improving depth resolution and temporal resolution. ...

Eicosanoic acid, methyl esterEicosanoic acid, methyl ester

Chickos, James S.; Zhao, Hui; Nichols, Gary, The vaporization enthalpies and vapor pressures of fatty acid methyl esters C18, ... Other names: Methyl arachisate; Methyl eicosanoate; Arachidic acid methyl ester; Kemester 2050; Methyl aracidate; Methyl ... Determination of physicochemical properties of some fatty acid methyl esters by gas liquid chromatography, J Am Oil Chem Soc, ... Determination of environmentally relevant physical-chemical properties of some fatty acid esters, J Amer Oil Chem Soc, 1997, 74 ...
more infohttps://webbook.nist.gov/cgi/cbook.cgi?ID=C1120281&Units=SI&Mask=4

Eicosanoic acid, butyl esterEicosanoic acid, butyl ester

The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database ...
more infohttps://webbook.nist.gov/cgi/inchi/InChI%3D1S/C24H48O2/c1-3-5-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-24

506-30-9 - Arachidic acid, 98% - Eicosanoic acid - A19616 - Alfa Aesar506-30-9 - Arachidic acid, 98% - Eicosanoic acid - A19616 - Alfa Aesar

Arachidic acid is a saturated fatty acid with a 20 carbon chain. Diets rich in saturated fats like arachidic acid are ... Arachidic acid is used in the manufacture of pharmaceuticals, soaps, cosmetics, and food packaging because of its surfactant- ... Synchrotron x-ray diffraction and reflection studies of arachidic acid monolayers at the air-water interface. J. Phys. Chem. ... Epitaxial Growth of Size-Quantized Cadmium Sulfide Crystals Under Arachidic Acid Monolayers. J. Phys. Chem. 1995, 95, (15), ...
more infohttps://www.alfa.com/en/catalog/A19616/

GMD - Eicosanoic acid (1TMS) - InChI=1S/C23H48O2Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23(24)25-26(2,3)4/h5...GMD - Eicosanoic acid (1TMS) - InChI=1S/C23H48O2Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23(24)25-26(2,3)4/h5...

Details of Eicosanoic acid (1TMS). rotate: click+drag; translate: alt. +click+drag; zoom: mousewheel; save: mol ... Reference spectra of Eicosanoic acid (1TMS). replica. entry date. detection. method. species. ...
more infohttp://gmd.mpimp-golm.mpg.de/Analytes/7FC9EEE3-ED3E-4480-BB5E-04C0AFBBBF58.aspx

Amount of 20:0 eicosanoic, arachidic fatty acid in WENDYS, Double Stack, with cheeseAmount of 20:0 eicosanoic, arachidic fatty acid in WENDY'S, Double Stack, with cheese

... arachidic fatty acid is present in WENDYS, Double Stack, with cheese in details, quantity how high or low 20:0 eicosanoic, ... Determine, under different quantities, how much of 20:0 eicosanoic, arachidic fatty acid nutrient can be found in WENDYS, ... There is g amount of 20:0 eicosanoic, arachidic fatty acid in amount of WENDYS, Double Stack, with cheese. ... Amount of 20:0 eicosanoic, arachidic fatty acid in WENDYS, Double Stack, with cheese. Back to products complete Nutritional ...
more infohttps://www.traditionaloven.com/foods/specific-nutrient/fast-food/wendys-double-stack-cheese/20-0-eicosanoic-arachidic-fatty-acid.html

Encyclopedia of LifeEncyclopedia of Life

eicosanoic acid. http://purl.obolibrary.org/obo/CHEBI_28822. Eifelian Age. http://resource.geosciml.org/classifier/ics/ischart/ ...
more infohttps://eol.org/terms/glossary/e/http:%2F%2Feol.org%2Fschema%2Fterms%2FEverglades

Accurate and reliable quantification of total microalgal fuel potential as fatty acid methyl esters by in situ...Accurate and reliable quantification of total microalgal fuel potential as fatty acid methyl esters by in situ...

... or better aliphatic chains of the fatty acids, are perhaps the most important constituents of algal biomass. Accurate ... eicosanoic acid (Cat #R-420200, lot: LB48664; purity, 99.8%), triheptadecanoate (Cat #T2151-1G, lot: 078K5207; purity, 98.9%), ... The ability of acid to catalyze the esterification of all fatty acids (free or linked) has led to a widespread use of acid ... A variety of acids have been used in the past for transesterification of lipids and free fatty acids, but methanolic hydrogen ...
more infohttps://link.springer.com/article/10.1007%2Fs00216-012-5814-0

Fats, Oils, Fatty Acids, Triglycerides - Chemical Structure (Page 1 of 3)Fats, Oils, Fatty Acids, Triglycerides - Chemical Structure (Page 1 of 3)

Description of trans fats, omega-3, and omega-6 essential fatty acids. ... Chemical structure and nomenclature of common fatty acids. ... eicosanoic acid peanut oil,. fish oil Gadoleic Acid 20 1 9- ... Linoleic Acid 18 2 9,12-octadecadienoic acid grape seed oil Alpha-Linolenic Acid. (ALA) 18 3 9,12,15-octadecatrienoic acid ... Butyric Acid Butyric acid (butanoic acid) is one of the saturated short-chain fatty acids responsible for the characteristic ...
more infohttps://www.scientificpsychic.com/fitness/fattyacids.html

Fatty acids, C14-22, 2-ethylhexyl esters,... - Registration Dossier - ECHAFatty acids, C14-22, 2-ethylhexyl esters,... - Registration Dossier - ECHA

Eicosanoic acid, 2-ethylhexyl esterEicosanoic acid, 2-ethylhexyl ester. ... Eicosanoic acid, 2-ethylhexyl esterEicosanoic acid, 2-ethylhexyl ester. ... Eicosanoic acid, 2-ethylhexyl esterEicosanoic acid, 2-ethylhexyl ester. ... Eicosanoic acid, 2-ethylhexyl esterEicosanoic acid, 2-ethylhexyl ester. ...
more infohttps://www.echa.europa.eu/web/guest/registration-dossier/-/registered-dossier/16075

Toxicity of five essential oils (EOs), vizToxicity of five essential oils (EOs), viz

... eicosanoic acid, farnesol, farnesyl acetone, geranyl acetone, humulene, octyl acetate, trans-2-cis-6-dodecadienal, trans- ... The fixed oil (1-2%) consisits of glycerides of oleic, stearic, linolenic, palmitic, caprylic and caproic acids. It is used in ...
more infohttp://www.ethnoleaflets.com/leaflets/carcino.htm

IRREGULAR POLLEN EXINE1 Is a Novel Factor in Anther Cuticle and Pollen Exine Formation | Plant PhysiologyIRREGULAR POLLEN EXINE1 Is a Novel Factor in Anther Cuticle and Pollen Exine Formation | Plant Physiology

1 acid, oleic acid; C18:2 acid, linoleic acid; C18:3 acid, linolenic acid; C20:0 acid, eicosanoic acid; C22:0 acid, docosanoic ... 0 acid, tetracosanoic acid; C26:0 acid, hexacosanoic acid; C16:0 β-OH acid, 2-hydroxy-hexadecanoic acid; C18:0 β-OH acid, 2- ... 0 ω-OH acid, 16-hydroxy-hexadecanoic acid; C18:1 ω-OH acid, 18-hydroxy-oleic acid; C18:2 ω-OH acid, 18-hydroxy-linoleic acid; ... 0 β-OH acid, 2-hydroxy-docosanoic acid; C24:0 β-OH acid, 2-hydroxy-tetracosanoic acid; C26:0 β-OH acid, 2-hydroxy-hexacosanoic ...
more infohttp://www.plantphysiol.org/node/978.full.print

Molecules of the Month | 3DChem.com - Chemistry, Structures & 3D MoleculesMolecules of the Month | 3DChem.com - Chemistry, Structures & 3D Molecules

Icosanoic acid. Arachidic acid, Eicosanoic Acid, Saturated Fatty Acid, August 2007. n-Hexanoic acid. Caproic acid, Saturated ... Linoleic acid. LA, Octadecadienoic acid, Unsaturated Fatty acid, August 2007. Erucic acid. Docos-13-enoic acid, Unsaturated ... Tetradecanoic acid. Myristic acid, Saturated Fatty Acid, August 2007. Hexadecenoic acid. Palmitoleic acid, Unsaturated Fatty ... Eicosapentaenoic acid. EPA, Icosapentaenoic acid, Timnodonic acid, Unsaturated Fatty acid, August 2007. Docosahexaenoic acid. ...
more infohttp://3dchem.com/motm.asp

CAS Number, CAS NO. Search, cas no. of chemicals Search,cas number database free -CasNo list - 1,132152-78-4,18822-87-2CAS Number, CAS NO. Search, cas no. of chemicals Search,cas number database free -CasNo list - 1,132152-78-4,18822-87-2

Eicosanoic acid,2-hydroxy-. C20H40O3. 17708-08-6. Octadecanoicacid, 2-hydroxy-3-[(1-oxohexadecyl)oxy]propyl ester. C37H72 O5. ... L-Glutamic acid,N-acetyl-O-phosphono-L-tyrosyl-L-a-glutamyl-L-a-glutamyl-L-isoleucyl-. C32H46N5O17P. ... Benzeneacetic acid,2-[(6-chloro-4-pyrimidinyl)oxy]-a-(methoxymethylene)-, methyl ester, (aE)-. C15H13ClN2O4. ... D-Gluconimidic acid,2-(acetylamino)-2-deoxy-N-hydroxy-, d-lactone, 3,4,6-triacetate (9CI). C14H20 N2 O9. ...
more infohttp://www.lookchem.com/cas/list-1-1576.html

Heart rate is associated with red blood cell fatty acid concentration: the Genetics of Coronary Artery Disease in Alaska...Heart rate is associated with red blood cell fatty acid concentration: the Genetics of Coronary Artery Disease in Alaska...

Consumption of omega-3 fatty acids (FAs) is associated with a reduction in deaths from coronary heart disease, arrhythmia, and ... eicosanoic acid (20:1n9; P = .007), and dihomo-gamma-linolenic acid (DGLA; 20:3n-6; P = .021). Factor analysis revealed that ... and eicosapentaenoic acid (20:5n-3; P = .009) and positive associations between HR and palmitoleic acid (16:1n-7; P = .021), ... Fatty Acids, Omega-3 / adverse effects, blood*, pharmacokinetics. Female. Follow-Up Studies. Genetic Predisposition to Disease* ...
more infohttp://www.biomedsearch.com/nih/Heart-rate-associated-with-red/20569715.html

L-Ascorbic acid sodium- CAS Number 134-03-2L-Ascorbic acid sodium- CAS Number 134-03-2

Buy L-Ascorbic acid sodium - CAS Number 134-03-2 from LGC Standards. Please login or register to view prices, check ... Eicosanoic acid. 100 mg. DRE-C13112800. Add to basket Eicosanoic acid-methyl ester. 100 mg. DRE-C13112840. Add to basket ... Chlorogenic acid. 100 mg. DRE-C11415750. Add to basket cis-10-Heptadecenoic acid 10 µg/mL in Methanol. 10 mL. DRE-L14122800ME. ... Docosanoic acid-ethyl ester. 100 mg. DRE-C13057820. Add to basket Docosanoic acid-methyl ester. 100 mg. DRE-C13057840. Add to ...
more infohttps://www.lgcstandards.com/GB/en/L-Ascorbic-acid-sodium/p/DRE-C10303900

Icosanoic acid - Registration Dossier - ECHAIcosanoic acid - Registration Dossier - ECHA

9800 mg/kg of Eicosanoic acid.The lethal dose (LD50) of Eicosanoic acid in mouse was found to be 8250 mg/kg of body weight. ... on rabbit for Eicosanoic acid is estimated to be 1.62, based on this value it can be estimated that Eicosanoic acid is slightly ... eye irritation score of Eicosanoic acid was estimated to be 33.4. On the basis of this score it infers that Eicosanoic acid ... In the absence of toxico-kinetic data for Eicosanoic acid, data from two read-across chemicals have been used.Docosanoic acid ...
more infohttps://echa.europa.eu/registration-dossier/-/registered-dossier/11014/7/1

Human Metabolome Database: Showing metabocard for 5-HETE (HMDB0011134)Human Metabolome Database: Showing metabocard for 5-HETE (HMDB0011134)

This compound belongs to the class of organic compounds known as hydroxyeicosatetraenoic acids. These are eicosanoic acids with ... 5-hydroxyeicosatetraenoic acid (5-HETE) is an endogenous eicosanoid. 5-HETE is an intermediate in arachidonic acid metabolism. ... Requirement of free arachidonic acid for leukotriene B4 biosynthesis by 12-hydroperoxyeicosatetraenoic acid-stimulated ... Total synthesis of 5(S)-hydroxy-6(E),8,11,14(Z)-eicosatetraenoic acid (5-HETE) and 12(S)-hydroxy-5,8,14(Z),10(E)- ...
more infohttp://www.hmdb.ca/metabolites/HMDB0011134

Human Metabolome Database: Showing metabocard for 11,12,15-THETA (HMDB0004684)Human Metabolome Database: Showing metabocard for 11,12,15-THETA (HMDB0004684)

This compound belongs to the class of chemical entities known as hydroxyeicosatrienoic acids. These are eicosanoic acids with ... In the epoxidation of arachidonic acid it generates only 14,15- and 11,12-cis-epoxyeicosatrienoic acids. It is the principal ... One of the predominant enzymes responsible for the epoxidation of endogenous cardiac arachidonic acid pools. Gene Name:. CYP2J2 ... It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. Gene Name:. CYP3A5 ...
more infohttp://www.hmdb.ca/metabolites/HMDB04684

Imaging of the Gas-Liquid interface: Brewster Angle Microscopy (BAM)Imaging of the Gas-Liquid interface: Brewster Angle Microscopy (BAM)

This can be easily demonstrated by spreading arachidic acid (n-eicosanoic acid) on water. Even at a relatively low surface ... The following images correspond to such a monolayer of arachidic acid. They both show the same area of the monolayer (the dust ... Low molecular weight surfactants such as long carbon chain organic acids give, in general, optically anisotropic monolayers. ...
more infohttp://users.otenet.gr/~garof/Bam/

EHRS Meeting: Posters I June 29- July 1, 2006 | EHRS European Hair Research SocietyEHRS Meeting: Posters I June 29- July 1, 2006 | EHRS European Hair Research Society

Origins and importance of 18 methyl eicosanoic acid (18MEA) in human hair.. Louise Albiston(2), Maf Davis(1), Preyesh Parmar(1 ... 3. Induction of versican by ascorbic acid 2-phosphate in dermal papilla cells.. Moon-Kyu Kim, Soon-Re Kim, Jung-Chul Kim, Young ...
more infohttp://ehrs.org/ehrs-meeting-posters-i-june-29-july-1-2006/

Synergistic neuroprotection by coffee components eicosanoyl-5-hydroxytryptamide and caffeine in models of Parkinsons disease...Synergistic neuroprotection by coffee components eicosanoyl-5-hydroxytryptamide and caffeine in models of Parkinson's disease...

It is a serotonin derivative wherein the C20 saturated fatty acid, eicosanoic acid, is linked to the serotonin amino group. ... Eicosanoyl-5-hydroxytryptamide (EHT), a fatty acid derivative of serotonin found in coffee, inhibits the PP2A methylesterase so ...
more infohttps://www.pnas.org/content/115/51/E12053

Plus itPlus it

i, eicosanoic acid methyl ester; ii, synthetic phytanic acid methyl ester; iii, transmethylated peak from etfqo-1. ... amino acid catabolism, and fatty acid degradation, suggesting the induction of salvage mechanisms that release amino acids and ... Lipoic acid-dependent oxidative catabolism of alpha-keto acids in mitochondria provides evidence for branched-chain amino acid ... In addition, the mammalian ETF/ETFQO system plays a key role in β-oxidation of fatty acids and catabolism of amino acids and ...
more infohttp://www.plantcell.org/content/17/9/2587

Plus itPlus it

... principally as eicosanoic acid, to amounts of 18% (w/w) of the total fatty acids of single embryos. To partially reconstruct ... stearic acid (18:0); c, 18:1Δ9; d, cis-vaccenic acid (18:1Δ11); e, linoleic acid (18:2Δ9,12); and f, α-linolenic acid (18:3Δ9, ... is enriched in the unusual fatty acid Δ5-eicosenoic acid (20:1Δ5). This fatty acid has physical and chemical properties that ... of the total fatty acids) and 22:1Δ5 (1.3% of the total fatty acids) (Table I). The double-bond position of these fatty acids ...
more infohttp://www.plantphysiol.org/content/124/1/243

Icosanoic acid - Registration Dossier - ECHAIcosanoic acid - Registration Dossier - ECHA

The Hydrolysis rate constant of Eicosanoic acid is estimated to be 0.0000000000253065 cm3/molecule-sec. at half life of 5.072 ... The Hydrolysis rate constant of Eicosanoic acid is estimated to be 0.0000000000253065 cm3/molecule-sec. at half life of 5.072 ...
more infohttps://echa.europa.eu/registration-dossier/-/registered-dossier/11014/5/2/3
  • The close position of the double bond of this fatty acid to the carboxy terminus results in chemical and physical properties that are not found in oleic acid (18:1Δ 9 ), the primary monounsaturated fatty acid of the seed oil of most plant species. (plantphysiol.org)
  • In addition, the mammalian ETF/ETFQO system plays a key role in β-oxidation of fatty acids and catabolism of amino acids and choline. (plantcell.org)
  • In contrast with the wild type, the mutants demonstrated a significant accumulation of several amino acids, an intermediate of Leu catabolism, and, strikingly, high-level accumulation of phytanoyl-CoA. (plantcell.org)
  • These data demonstrate the involvement of a mitochondrial protein, ETFQO, in the catabolism of Leu and potentially of other amino acids in higher plants and also imply a novel role for this protein in the chlorophyll degradation pathway activated during dark-induced senescence and sugar starvation. (plantcell.org)
  • The mammalian mitochondrial proteins, ETF and ETFQO, are essential for the catabolism of fatty acids, several amino acids, and choline and are important in supplying mitochondria with respiratory substrates auxiliary to those derived from sucrose. (plantcell.org)
  • Moreover many Amino acids like 0.033 g of Tryptophan, 0.187 g of Threonine, 0.187 g of Isoleucine, 0.505 g of Leucine, 0.199 g of Lysine and 0.097 g of Methionine are also found in 145 gram of the Corn. (healthbenefitstimes.com)
  • Arginine , Cystine and Tyrosine are required by infants and growing children and we have therefore included them in the list of essential amino acids. (skipthepie.org)
  • The mouse were given the test substance by the oral route at a dose concentration of 5000 - 9800 mg/kg of Eicosanoic acid.The lethal dose (LD50) of Eicosanoic acid in mouse was found to be 8250 mg/kg of body weight.Toxic effects was not observed. (europa.eu)
  • Since these read across values have 90 - 100% structural similarity so the inference can be extrapolated to the target substance, Eicosanoic acid, as well. (europa.eu)
  • The Hydrolysis rate constant of Eicosanoic acid is estimated to be 0.0000000000253065 cm3/molecule-sec. at half life of 5.072 hrs.The estimated half life of the substance indicates that the substance is moderately hydrolysable. (europa.eu)
  • Our results showed that IPE1 participates in the putative oxidative pathway of C16/C18 ω-hydroxy fatty acids and controls anther cuticle and pollen exine development together with MALE STERILITY26 and MALE STERILITY45 in maize. (plantphysiol.org)
  • These three-dimensional molecular projections show the Cis and Trans configurational isomers of 9-octadecenoic acid with the hydrogen atoms shown in blue. (scientificpsychic.com)
  • Fatty acids that contain carbon-carbon double bonds are described as unsaturated because more hydrogen atoms could be added to them (this is sometimes done industrially to create so-called hydrogenated vegetable oils from unsaturated oils). (syft.com)
  • Expression of a cDNA for the L. douglasii acyl-CoA desaturase homolog in somatic soybean ( Glycine max ) embryos behind a strong seed-specific promoter resulted in the accumulation of Δ 5 -hexadecenoic acid to amounts of 2% to 3% (w/w) of the total fatty acids of single embryos. (plantphysiol.org)
  • Expression of the L. douglassi FAE1 homolog in somatic soybean embryos was accompanied by the accumulation of C 20 and C 22 fatty acids, principally as eicosanoic acid, to amounts of 18% (w/w) of the total fatty acids of single embryos. (plantphysiol.org)
  • The acute toxicity study was conducted to evaluate the toxic effects of administration of Eicosanoic acid to New Zealand White rabbit by the dermal route. (europa.eu)
  • 3. Induction of versican by ascorbic acid 2-phosphate in dermal papilla cells. (ehrs.org)
  • The major component of pollen exine is the very insoluble sporopollenin, which may be made of aliphatic derivatives such as fatty acids and phenolic compounds ( Ariizumi and Toriyama, 2011 ). (plantphysiol.org)
  • We conclude by demonstrating a full mass balance closure of all fatty acids around a traditional lipid extraction process. (springer.com)
  • Table 2 shows the two most abundant volatile oxidation products for three important fatty acids. (syft.com)
  • Each fatty acid yields quite different volatile oxidation products, all of which differ from natural, desirable volatile compounds in the oils. (syft.com)
  • Three fatty acids commonly found in vegetable oils and their first and second highest concentration volatile secondary oxidation products. (syft.com)
  • Unfortunately, a direct correlation does not exist between the proportions of fatty acids in the oil and the proportions of volatile oxidation products in the headspace. (syft.com)
  • Fatty acids are frequently represented by a notation such as C18:2 that indicates that the fatty acid consists of an 18-carbon chain and 2 double bonds. (scientificpsychic.com)
  • These are eicosanoic acids with an attached hydroxyl group and four CC double bonds. (hmdb.ca)
  • In particular, increasing the number of double bonds causes the rate of oxidation of the fatty acid to increase. (syft.com)
  • However, fatty acids with multiple double bonds ("polyunsaturated" fatty acids) have a beneficial effect on health, helping to protect against heart disease when consumed. (syft.com)
  • This is more likely to occur to fatty acids with more double bonds. (syft.com)
  • Eicosanoyl-5-hydroxytryptamide (EHT), a fatty acid derivative of serotonin found in coffee, inhibits the PP2A methylesterase so as to maintain PP2A in a highly active methylated state and mitigates the phenotype of α-synuclein transgenic (Syn Tg ) mice. (pnas.org)
  • Oils containing unsaturated fatty acids have been demonstrated to offer health benefits over their saturated counterparts, but are unfortunately significantly susceptible to oxidation. (syft.com)
  • When fatty acids oxidize, the oxidation products adversely affect the taste and smell of the oil. (syft.com)
  • 1 So the most desirable situation is to use oils which have a high percentage of unsaturated fatty acids but to prevent oxidation as much as possible. (syft.com)
  • Structures and relative oxidation rates (25 oC) of several important fatty acids found in vegetable oils. (syft.com)
  • Primary oxidation consists of oxygen adding to fatty acids at the double bond position to form peroxides. (syft.com)
  • This compound belongs to the class of organic compounds known as hydroxyeicosatetraenoic acids. (hmdb.ca)
  • This is illustrated in Table 1, which lists some of the commercially significant fatty acids found in vegetable oils. (syft.com)