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Showing 1 to 20 of 45 for “"formamide"”.
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Hydrolysis of formamide and volatilization of ammonia from nitrogen fertilizers added to soils
… and sensitive method for the determination of formamide was developed. This method involves the colorimetric determination of the ferric-formohydroxamate complex produced upon the reaction of Fe('3+) with the formohydroxamic acid produced from the reaction of formamide with hydroxylamine under …
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Asymmetric Allylation of Aldehydes Catalyzed by Formamide Organocatalysts. Studies Towards The Synthesis of L- Domoic Acid Side Chain
… allylation of aldehydes, among them are formamide catalysts. In this study, structure and activity relationship evaluations were carried out using commercially available amides and formamides to investigate their effectiveness on activating the allylation of aldehydes. Results from this …
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Surface tension and electroporation of lipid bilayers
… studied their wetting properties using water, formamide, and diiodomethane. We determined that the strong interaction between polar liquids (water and formamide) and hydrophilic substrates (mica and glass) can affect the wetting behavior and quality of films. In addition, we verified that the …
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Use of cell wall-hydrolytic enzymes in studies of the reticuloendothelial-stimulatory properties of Propionibacterium acnes
… and antitumor activities of P. acnes vaccine. Formamide-extracted vaccines were as active as untreated vaccines in antitumor assays, and were also sensitive to lysis by lysozyme. Treatment of formamide-extracted vaccines with lysozyme abolished antitumor activity, indicating that peptidoglycan …
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Multiple Kinetic Resolution of Tetrathia[7]helicenes. Towards the Study of Two Photon Circular Dichroism.
… direct asymmetric formylation using novel chiral formamide reagents and/or asymmetric lithiation using (–)-sparteine followed by a DMF quench. The chiral auxiliaries were first examined in single kinetic resolution experiments in order to identify the most suitable conditions and auxiliaries. …
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Determination of Reactivity Ratios for Acrylonitrile/Methyl Acrylate Radical Copolymerization Via Nonlinear Methodologies Using Real Time FTIR
… (AIBN) initiator in dimethyl formamide (DMF) at 62°. The FTIR technique allowed rapid generation of extensive copolymer compositions, which permitted application of nonlinear least squares methodology for the first time to this copolymer system. Thus, reactivity ratios at the …
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Degenerate Oligonucleotide Primed - Polymerase Chain Reaction Evaluation And Optimization To Improve Downstream Forensic STR Analysis Of Low Quality/Low Quantity DNA
… amplification purification and elution into formamide produces a slightly higher percent STR allele success over the standard protocol. After future optimization studies, this may be a useful method to obtain more accurate and complete STR profiles from low quality/low quantity biological …
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Total electron scattering cross sections of molecules containing H, B, C, N, O, F, Si, P, S, and Cl in the energy range 0.1- 6.0 keV.
… The TCS of important biomolecules 2-Butanone Formamide, Trimethylamine, Aniline, Pyrimidine, Anthracene, five nucleic bases (adenine, cytosine, guanine, thymine and uracil) , Phosphoric acid, sugar substitute (Tetrahydrofuran, Furan, Tetrahydropyran, 3-hydroxytetrahydrofuran, D-Glucose, and …
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An exploratory investigation of the possibility for electrodepositing aluminum from miscellaneous organic system
… of the system basic aluminum acetate and formamide. Various types of organic solvents were tested but only formamide dissolved the basic aluminum acetate. Electrolysis of a bath containing 2.5 grams of basic aluminum acetate and 79.1 grams of formamide for 11.33 hours resulted in the …
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Layered Double Hydroxides: Morphology, Interlayer Anion, and the Origins of Life
… that expected on the early earth, hydrolysis to formamide rather than self-addition occurs. One theory to alleviate this side reaction is the use of minerals or clays that are thought to concentrate and catalyze prebiotics of interest. Layered double hydroxides have been studied as a catalyst for …
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Enthalpies of transfer for amide-water-electrolyte systems
… N-methylacetamide, acetamide, formamide 1 N-methylformamide, N-acetylglycine-N-methylamide, N-acetylalanine-N-methylamide, N-acetylleucine-N-methyl-methylamide, and N-acetylglycylglycine-N-methylamide, from water to aqueous salt solution have been measured at 25° using the …
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Synthesis and growth dynamics study of silver nanoparticles
… synthesized by an aqueous route using dimethyl formamide (DMF) as the reducing agent in the presence of poly (iV-vinylpyrrolidone) (PVP) without the addition of seeds. The products were characterized by UV-visible spectroscopy and transmission electron microscopy (TEM). This work was followed by …
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Investigating the Surface Energy and Bond Performance of Compression Densified Wood
… energy component calculation. Water, glycerol, formamide, ethylene glycol, and -Bromonapthalene were used as probe liquids. Densified and hygro-thermally treated yellow-poplar had significantly higher contact angles than control samples. The contact angle trends for densified and …
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Physico-chemical studies of block copolymers in aqueous solution
… (methanol, ethanol, n-propanol, n-butanol and formamide) on the observed phase transition of poloxamers have been investigated using HSDSC. Sodium chloride, phosphate buffer, n-propanol and n-butanol favour aggregation of the copolymer reflected in a lowering the Tm and an increase in AHcal]. …
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Transfer of alkyl groups in novel amidine dications and other superelectrophiles
… amidine salts resulting from various N-methylformamides and N-methylbenzamides I and II. Treatment of these compounds with triflic anhydride under mild conditions led to extremely facile alkyl transfer from an sp3-hybridised nitrogen centre to very weakly nucleophilic triflate anions. For the …
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Studies on the ion-droplet mixed regime in colloid thrusters
… of solvation is n = 5.1 for (CH3NO)nNa+ ions in formamide doped with NaI for a conductivity of 2.15 siemens per meter.
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Carrier concentration and dye type effect on carrier and dye uptake of dacron type 54 yarn in disperse dyeing of polyester
… The dye in the yarn was extracted with dimethyl formamide as a solvent using the Fisher Shaking Water Bath. To measure the dye and carrier uptake of the polyester yarn, the extraction and dye bath solutions were analyzed spectrophotometrically. A two-way factorial Analysis of Variance (ANOVA) was …
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The design, fabrication and testing of micro-fabricated linear and planar colloid thruster arrays
… linear colloid thruster array (with highly doped formamide as propellant-intended to work in the droplet emission regime), and two
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Some uses of tin compounds in organic synthesis.
… - hydroxy acids, then treatment with d imethy 1 formamide dimethyl acetal gave allyl stannanes stereospecifically, where steric and reactivity effects allowed. Thirdly, an investigation of the reaction of a tin cuprate with allenes is described. The cuprate reacts with 1,1-dimethyl allene …
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The effect of various organic compounds on the growth of azotobacter
… to that of the atmosphere. Urea, Glycocoll, Formamide, and Allantoin were especially active in depressing fixation.
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