473936

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Showing 1-30 of 36 results for "473936" within Papers

[N-methylformamide in urine].

Hideki Igisu et al.

Nihon rinsho. Japanese journal of clinical medicine, 62 Suppl 12, 488-490 (2005-01-22)

Photochemistry of N-methylformamide: matrix isolation and nonadiabatic dynamics.

Rachel Crespo-Otero et al.

Chemphyschem : a European journal of chemical physics and physical chemistry, 14(4), 827-836 (2012-10-04)

The photochemistry of N-methylformamide (MF) is elucidated by investigating its photodissociation products generated by UV irradiation (248 nm) in an argon matrix (10 K). We find that, starting from trans-MF, prolonged irradiation produces cis-MF, CH3NH2 and CO fragments as major

Theoretical exploration of the cooperative effect in NMF-NMF-amino acid residue hydrogen bonding system.

Xichen Li et al.

Physical chemistry chemical physics : PCCP, 10(36), 5607-5615 (2008-10-29)

This paper presents a theoretical study of the cooperative effect in sixteen linearly-arranged trimer systems consisting of N-methylformamide dimer and an extra amino acid residue. These trimer systems, NMF-NMF-AAR, in short, have been systematically investigated by full optimization at B3LYP/cc-pVTZ

Identification of potential genomic biomarkers of hepatotoxicity caused by reactive metabolites of N-methylformamide: Application of stable isotope labeled compounds in toxicogenomic studies.

Abdul Mutlib et al.

Chemical research in toxicology, 19(10), 1270-1283 (2006-10-17)

The inability to predict if a metabolically bioactivated compound will cause toxicity in later stages of drug development or post-marketing is of serious concern. One approach for improving the predictive success of compound toxicity has been to compare the gene

N-methylformamide as a separation medium in capillary electrophoresis.

Jansson M and Roeraade J.

Chromatographia, 40(3-4), 163-169 (1995)

Cryoprotectant toxicity neutralization.

Gregory M Fahy

Cryobiology, 60(3 Suppl), S45-S53 (2009-06-09)

Cryoprotectant toxicity is a fundamental limiting factor for the successful cryopreservation of living systems by both freezing and vitrification, and the ability to negate it would be attractive. Past attempts to demonstrate "cryoprotectant toxicity neutralization" (CTN) have had many ups

[High performance liquid chromatography for determination of N-acetyl-S-(N-methylformamide) cysteine in human urine derivative oscillopolarography for determination of urine arsenic].

Jun He et al.

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 27(2), 103-104 (2009-04-09)

Amidic and acetonic cryoprotectants improve cryopreservation of volvocine green algae.

A Nakazawa et al.

Cryo letters, 33(3), 202-213 (2012-07-25)

A number of volvocalean green algae species were subjected to a two-step cryopreservation protocol with various cryoprotectants. Potential cryoprotectants were methanol (DMSO), N,N-dimethylformamide (DMF), N,N-dimethylacetamide, N-methylformamide, and hydroxyacetone (HA). We confirmed prior reports that MeOH was effective for cryopreserving Chlamydomonas

Mitochondrial DNA alterations in blood of the humans exposed to N,N-dimethylformamide.

Dar-Bin Shieh et al.

Chemico-biological interactions, 165(3), 211-219 (2007-01-27)

N,N-Dimethylformamide (DMF) has been widely used in industries because of its extensive miscibility with water and solvents. Its health effects include hepatotoxicity and male reproductoxicity, possibly linked with mitochondrial DNA (mtDNA) alterations including mtDNA common deletion (DeltamtDNA(4977)) and mtDNA copy

An effective method for studying intermolecular interactions in binary liquids with hydrogen bonds; FTIR spectra and ab initio calculations in the N-methylformamide-methanol system.

Ewa Kamieńska-Piotrowicz et al.

The journal of physical chemistry. B, 114(17), 5810-5818 (2010-04-13)

Molecular complexes in methanol (MeOH)-N-methylformamide (NMF) mixtures were studied based on their FTIR-ATR spectra, to which two methods of analysis were applied: factor analysis and a quantitative version of the difference-spectra method. The mean composition of a complex between NMF

Liquid-phase synthesis of a Li₃PS₄solid electrolyte using N-methylformamide for all-solid-state lithium batteries.

Teragawa S, et al.

Journal of Material Chemistry A, 2(14), 5095-5099 (2014)

CH stretching vibration of N-methylformamide as a sensitive probe of its complexation: infrared matrix isolation and computational study.

M Sałdyka et al.

Physical chemistry chemical physics : PCCP, 13(31), 13992-14002 (2011-07-12)

The complexes between trans-N-methylformamide (t-NMF) and Ar, N(2), CO, H(2)O have been studied by infrared matrix isolation spectroscopy and/or ab initio calculations. The infrared spectra of NMF/Ne, NMF/Ar and NMF/N(2)(CO,H(2)O)/Ar matrices have been measured and the effect of the complexation

How water links to cis and trans peptidic groups: the rotational spectrum of N-methylformamide-water.

Walther Caminati et al.

Physical chemistry chemical physics : PCCP, 12(35), 10230-10234 (2010-07-27)

We investigated the Fourier transform microwave spectra of the hydrated forms of N-methylformamide (NMF) in a supersonic expansion and assigned the rotational spectra of two mono-hydrated species. The conformation of each molecular complex was reliably determined on the basis of

Quasiplanarity of the peptide bond.

Jakub Chalupský et al.

The journal of physical chemistry. A, 112(4), 693-699 (2008-01-08)

The vibrational motions of the model peptide unit represented by the main-chain carbonyl carbon, oxygen, nitrogen, and amide hydrogen are analyzed quantum-mechanically using formamide, cis-N-methylformamide, trans-N-methylformamide, N,N-dimethylformamide, l-alanyl-l-alanine, and N-benzoylphenylalanine as dynamical models. To make this analysis computationally feasible, the

N-Methylcarbamoyl-lysine adduct in globin: a new metabolic product and potential biomarker of N, N-dimethylformamide in humans.

J Mráz et al.

Toxicology letters, 162(2-3), 211-218 (2005-11-18)

Metabolism of the solvents N,N-dimethylformamide (DMF) and N-methylformamide (MF) results in the formation of N-methylcarbamoyl adducts at the N-terminal valine and lysine in blood protein globin, of which the lysine adduct has so far only been reported in rats given

Conductivity dynamics and static dielectric permittivity of highly conducting molecular liquids studied with impedance spectroscopy. Formamides.

Jolanta Swiergiel et al.

The journal of physical chemistry. B, 113(43), 14225-14228 (2009-10-07)

Impedance spectroscopy was used for studies of the frequency dependence of the electric conductivity of two highly conducting liquid amides: N-methylformamide (NMF), strongly self-associated via the hydrogen bonds C=O...N-H, and N,N-dimethylformamide (DMF), which is not able to self-organize by hydrogen

Integration of clinical chemistry, expression, and metabolite data leads to better toxicological class separation.

Jeppe S Spicker et al.

Toxicological sciences : an official journal of the Society of Toxicology, 102(2), 444-454 (2008-01-08)

A large number of databases are currently being implemented within toxicology aiming to integrate diverse biological data, such as clinical chemistry, expression, and other types of data. However, for these endeavors to be successful, tools for integration, visualization, and interpretation

N-methylformamide, a hyperplectic model for peptides in thin film infrared spectroscopy on planar AgX.

Edward M Kosower et al.

The journal of physical chemistry. B, 113(16), 5622-5632 (2009-03-31)

N-methylformamide (NMF), the simplest model for peptides, exhibits hyperplectic (both simple and complex) behavior as revealed by thin film infrared spectroscopy on planar AgX [AgCl:AgBr] fiber. IR spectra (0.1 s scans) of 10 microg NMF/dichloromethane(DCM) under N(2) flow first show

N-methylformamide: cytotoxic, radiosensitizer, or chemosensitizer.

K Clagett-Carr et al.

Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 6(5), 906-918 (1988-05-01)

N-methylformamide (NMF), a polar solvent, is currently being evaluated by the National Cancer Institute (NCI) as an antineoplastic agent because of its activity against colon, mammary, and lung tumor xenografts. Results from preclinical studies suggest that it has radiosensitizing, chemosensitizing

Combining novel strategy with kinetic approach in the determination of respective respiration and skin exposure to N,N-dimethylformamide vapor.

Shih-Min Wang et al.

The Science of the total environment, 388(1-3), 398-404 (2007-09-15)

N,N-dimethylformamide (DMF) could be readily absorbed via skin and inhalation routes. It is difficult, however, to separate the internal dose contribution from skin vapor and inhalation exposure. This study attempts to quantitatively determine the separate skin vapor and inhalation exposure

Glycerol, methyl-formamide and dimethyl-formamide in canine semen cryopreservation.

D O Futino et al.

Reproduction in domestic animals = Zuchthygiene, 45(2), 214-220 (2008-11-21)

The aim of the present work was to compare the efficiency of methyl-formamide (MF), dimethyl-formamide (DF) and glycerol (GL) as cryoprotectants in canine semen cryopreservation. For the experiment, pooled semen was submitted to one of the three cryoprotectants, with a

A hybrid neutron diffraction and computer simulation study on the solvation of N-methylformamide in dimethylsulfoxide.

João M M Cordeiro et al.

The Journal of chemical physics, 138(4), 044502-044502 (2013-02-08)

The solvation of N-methylformamide (NMF) by dimethylsulfoxide (DMSO) in a 20% NMF/DMSO liquid mixture is investigated using a combination of neutron diffraction augmented with isotopic substitution and Monte Carlo simulations. The aim is to investigate the solute-solvent interactions and the

Effect of pre-freeze semen quality, extender and cryoprotectant on the post-thaw quality of Asian elephant (Elephas maximus indicus) semen.

P Imrat et al.

Cryobiology, 66(1), 52-59 (2012-11-22)

Semen cryopreservation and artificial insemination (AI) are potentially valuable methods for supporting the breeding management of endangered species like the Asian elephant. Cryopreservation of Asian elephant semen has however proven problematic with respect to maintenance of both adequate semen quality

Preparation of Li₂S-P₂S₅ solid electrolyte from N-methylformamide solution and application for all-solid-state lithium battery.

Teragawa S, et al.

Journal of Power Sources, 248, 939-942 (2014)

Femtosecond dynamics of hydrogen-bonding solvents. Formamide and N-methylformamide in acetonitrile, DMF, and water.

Chang JY and Castner Jr EW.

J. Chem. Phys. , 99(1), 113-125 (1993)

Use of N-methylformamide as a solvent in indium-promoted Barbier reactions en route to enediyne and epoxy diyne formation: comparison of rate and stereoselectivity in C-C bond-forming reactions with water.

Kwame Frimpong et al.

The Journal of organic chemistry, 74(16), 5861-5870 (2009-07-29)

Indium-promoted coupling reactions between propargyl aldehydes (1) and alpha-chloropropargylphenyl sulfide are reported. Although water has been shown to accelerate indium metal promoted reactions, the reverse pattern was observed in this series. Use of N-methylformamide (NMF), which has not previously been

Elementary peptide motifs in the gas phase: FTIR aggregation study of formamide, acetamide, N-methylformamide, and N-methylacetamide.

Merwe Albrecht et al.

The journal of physical chemistry. A, 112(33), 7530-7542 (2008-07-31)

Cold, isolated peptide model compounds and their aggregates are generated in pulsed supersonic jet expansions and detected by FTIR spectroscopy in the amide-A region, complemented by amide-I spectra. The most stable, symmetric dimer of formamide is unambiguously assigned in the

Pd(II)-catalyzed ortho trifluoromethylation of arenes and insights into the coordination mode of acidic amide directing groups.

Xing-Guo Zhang et al.

Journal of the American Chemical Society, 134(29), 11948-11951 (2012-07-12)

A Pd(II)-catalyzed trifluoromethylation of ortho C-H bonds with an array of N-arylbenzamides derived from benzoic acids is reported. N-Methylformamide has been identified as a crucial promoter of C-CF(3) bond formation from the Pd center. X-ray characterization of the C-H insertion

Interlayer condensation of protonated layered silicate magadiite through refluxing in N-methylformamide.

Asakura Y, et al.

Bulletin of the Chemical Society of Japan, 88(9), 1241-1249 (2015)

Surface-enhanced resonance Raman scattering nanostars for high-precision cancer imaging.

Stefan Harmsen et al.

Science translational medicine, 7(271), 271ra7-271ra7 (2015-01-23)

The inability to visualize the true extent of cancers represents a significant challenge in many areas of oncology. The margins of most cancer types are not well demarcated because the cancer diffusely infiltrates the surrounding tissues. Furthermore, cancers may be

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