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Showing 1-30 of 35 results for "69110" within Papers
Jeffrey O Stull et al.
AIHA journal : a journal for the science of occupational and environmental health and safety, 63(1), 62-71 (2002-02-15)
Although there is a wide variety of work gloves available to users of commercial paint stripping products, there are no published studies examining which type of gloves provide the best protection. To address this need, a multiphase study was undertaken
Hsiu-Li Su et al.
Journal of chromatography. A, 1216(27), 5313-5319 (2009-05-26)
This paper describes a sweeping-micellar electrokinetic chromatography (sweeping-MEKC) technique for the determination of seven benzodiazepines, using, as sweeping carriers, the ionic liquid-type cationic surfactants 1-cetyl-3-methylimidazolium bromide (C(16)MIMBr) and N-cetyl-N-methylpyrrolidinium bromide (C(16)MPYB). These surfactants resemble the commonly employed cationic surfactant cetyltrimethylammonium
K M Johansson et al.
Physical chemistry chemical physics : PCCP, 10(20), 2972-2978 (2008-05-14)
We describe a fluidity and conductivity study as a function of composition in N-methylpyrrolidine-acetic acid mixtures. The simple 1 : 1 acid-base mixture appears to form an ionic liquid, but its degree of ionicity is quite low and such liquids
Michael D Pluth et al.
Proceedings of the National Academy of Sciences of the United States of America, 106(26), 10438-10443 (2009-02-03)
Cyclic amines can be encapsulated in a water-soluble self-assembled supramolecular host upon protonation. The hydrogen-bonding ability of the cyclic amines, as well as the reduced degrees of rotational freedom, allows for the formation of proton-bound homodimers inside of the assembly
Vincent P Schnee et al.
Electrophoresis, 27(21), 4141-4148 (2006-11-01)
MEKC and linear solvation free energy relationships (LSFERs) have been used to characterize the solute distribution between water and self-assemblies formed from ionic liquid type mono-chain cationic surfactants containing a cyclic pyrrolidinium head group. Several features of the solvation environment
Jocelyn C Pinkert et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 11(5), 642-650 (2006-05-26)
CooA, the only protein known to employ proline as a heme ligand, is a CO-activated transcription factor found in the bacterium Rhodospirillum rubrum. Proline is a heme ligand in both the Fe(III) and Fe(II) states; the sixth ligand is cysteinate
Guiliang Chen et al.
Journal of pharmaceutical and biomedical analysis, 33(4), 797-801 (2003-11-19)
A new, simple and rapid gas chromatographic method was developed for the determination of N-methylpyrrolidine (NMP) in cefepime and its preparation. NMP was extracted with chloroform from cefepime and its preparation. An HP-1 column was maintained at 100 degrees C.
Narayanan Harihara Subramanian et al.
Journal of chromatographic science, 47(7), 549-552 (2009-09-24)
An alternative ion chromatographic method to the existing USP method for the determination of N-methylpyrrolidine (NMP) in cefepime hydrochloride is developed. The cefepime in solution behaves as a strong cation and gets retained in the analytical column, leading to reduction
Acute toxicities to larval rainbow trout of representative compounds detected in Great Lakes fish.
C C Edsall
Bulletin of environmental contamination and toxicology, 46(2), 173-178 (1991-02-01)
Ionic liquid electrolytes for lithium batteries: Synthesis, electrochemical, and cytotoxicity studies.
Madria N, et al.
Journal of Power Sources, 234, 277-284 (2013)
Structure and properties of high stability geminal dicationic ionic liquids.
Anderson J L, et al.
Journal of the American Chemical Society, 127(2), 593-604 (2005)
Inhibition of acetylcholinesterase by caffeine, anabasine, methyl pyrrolidine and their derivatives.
N Karadsheh et al.
Toxicology letters, 55(3), 335-342 (1991-03-01)
The inhibition of acetylcholinesterase (AChE) by caffeine, anabasine, methylpyrrolidine and several derivatives was examined. Most of the compounds had moderate inhibitory activity with I50 values in the range of 87-480 microM. The inhibition of AChE by these compounds has not
Mir Ali Farajzadeh et al.
Journal of separation science, 33(23-24), 3767-3773 (2010-10-16)
A simple, rapid and efficient sample preparation technique, dispersive liquid-liquid microextraction, coupled with gas chromatography-flame ionization detection has been developed to determine N-methylpyrrolidine in cefepime. The effect of various experimental factors on the preparation procedure, such as the nature and
Bing-Jyun Lu et al.
Scientific reports, 9(1), 13253-13253 (2019-09-15)
Wood has been a crucial natural material for human civilization since prehistoric times. In archaeology, the examination of the wood microstructure is important for the study of architecture, musical instruments, sculptures, and so on. Scanning electron microscopy (SEM) examination is
Kallidanthiyil Chellappan Lethesh et al.
Dalton transactions (Cambridge, England : 2003), 48(3), 982-988 (2018-12-24)
Magnesium(ii) complexes, [Mg2+(hfac-)3][Cation+], were prepared as solids from hydrophobic hexafluoroacetylacetonate ionic liquids ([Cation+][hfac-] ILs) and Mg(Tf2N)2. 1-Butyl-3-methylimidazolium ([C4mim]), N-butylpyridinium ([C4Pyr]), N-butyl-N-methylpiperidinium ([C4Pip]), N-hexyl-N-methylmorpholinium ([C6Morp]) and N-butyl-N-methylpyrrolidinium ([C4pyrr]) were used as cationic cores. The [C4Pip][hfac], [C4Pyr][hfac] and [C6Morp][hfac] ILs were prepared
Guk-Tae Kim et al.
ACS nano, 11(6), 5933-5943 (2017-05-23)
The electrochemical behavior of binder-free, germanium and silicon nanowires as high-capacity anode materials for lithium-ion battery systems is investigated in an ionic liquid electrolyte. Cyclic voltammetry, cycling tests, and impedance spectroscopy reveal a highly reversible lithium alloying/dealloying process, as well
Kenjiro Ono et al.
Biological psychiatry, 52(9), 880-886 (2002-10-26)
Cerebral deposition of amyloid beta-peptide (Abeta) is a major neuropathologic feature in Alzheimer's disease (AD). A consistent protective effect of smoking on AD has been documented by many case-control studies. It has been suggested that nicotine, a major component of
Eneko Azaceta et al.
Physical chemistry chemical physics : PCCP, 13(29), 13433-13440 (2011-06-29)
The influence of the Zn(2+) concentration and temperature on the electrochemical reduction of O(2) in a solution of zinc bis(trifluoromethanesulfonyl)imide (Zn(TFSI)(2)) salt in 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR(14)TFSI) ionic liquid is presented. ZnO nanocrystalline films were then electrodeposited, under enhanced O(2) reduction
N-Methyl-N-propylpiperidinium bis (trifluoromethanesulfonyl) imide (PP13?TFSI)?novel electrolyte base for Li battery.
Sakaebe H and Matsumoto H
Electrochemical Communications, 5(7), 594-598 (2003)
MCM-47: a highly crystalline silicate composed of hydrogen-bonded ferrierite layers.
Burton A, et al.
Chemistry of Materials, 12(10), 2936-2942 (2000)
A R Salomon et al.
Biochemistry, 35(42), 13568-13578 (1996-10-22)
The 42-residues beta-(1-42) peptide is the major protein component of amyloid plaque cores in Alzheimer's disease. In aqueous solution at physiological pH, the synthetic beta-(1-42) peptide readily aggregates and precipitates as oligomeric beta-sheet structures, a process that occurs during amyloid
Marlon Cowart et al.
Bioorganic & medicinal chemistry letters, 14(3), 689-693 (2004-01-27)
2-aminoethylbenzofurans constitute a new class of H(3) antagonists that are more rotationally constrained than most previously reported H(3) antagonists. They retain high potency at human and rat receptors, with efficient CNS penetration observed in 35. The SAR of the basic
Chafik Ghayor et al.
The Journal of biological chemistry, 286(27), 24458-24466 (2011-05-27)
Regulation of RANKL (receptor activator of nuclear factor κB ligand)-induced osteoclast differentiation is of current interest in the development of antiresorptive agents. Osteoclasts are multinucleated cells that play a crucial role in bone resorption. In this study, we investigated the
Lijun Wei et al.
Carbohydrate research, 340(9), 1583-1590 (2005-06-01)
4'-Modified avermectin derivatives were designed and synthesized. Some of the new synthetic compounds showed excellent in vivo bioactivity against cabbage larvae when compared to commercially available avermectin B1a. In this synthesis, uncommon thioglycosyl sugar donors, prepared from the hydrolysis of
Pawel Mroz et al.
Nanomedicine : nanotechnology, biology, and medicine, 7(6), 965-974 (2011-06-08)
Functionalized fullerenes represent a new class of photosensitizer (PS) that is being investigated for photodynamic therapy (PDT) of various diseases, including cancer. We tested the hypothesis that fullerenes could be used to mediate PDT of intraperitoneal (IP) carcinomatosis in a
Burkhard Flick et al.
Toxicology and applied pharmacology, 237(2), 154-167 (2009-03-14)
N-methyl-2-pyrrolidone (NMP), which undergoes extensive biotransformation, has been shown in vivo to cause developmental toxicity and, especially after oral treatment, malformations in rats and rabbits. Data are lacking as to whether the original compound or one of its main metabolites
Monika Dąbrowska et al.
Biomedical chromatography : BMC, 29(3), 388-395 (2014-07-22)
A rapid, accurate and sensitive thin-layer chromatography (TLC) method with densitometric detection has been developed and validated for the determination of cefepime in pharmaceuticals. Chromatographic separation was achieved on a silica gel TLC F254 plates with a mobile phase consisting
Ann Fowler et al.
Journal of biomolecular screening, 11(8), 1027-1034 (2006-11-14)
Both the tricyclic and specific serotonin reuptake inhibitor classes of antidepressants act primarily by inhibiting the reuptake of released serotonin by the human serotonin reuptake transporter (hSERT). In this article, the authors describe the use of a fluorescent substrate of
S John Prasanna et al.
Journal of chromatographic science, 48(10), 830-834 (2010-11-04)
The present study relates to a new capillary electrophoresis method for the determination of N-methylpyrrolidine, an impurity considered to be toxic and also potential degradation impurity in cefepime hydrochloride drug substance. The newly developed capillary electrophoresis method for determining the
Arpan Manna et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 15(14), 3067-3077 (2014-07-30)
Rate constants and derived activation parameters of organic reactions in aqueous media, in particular Diels-Alder reactions, are sensitive to the presence of cosolvents in water. To enhance the solubility window of water, we introduced ionic liquids as cosolvents in the
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