87368

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Showing 1-30 of 323 results for "87368" within Papers

Kinetic and economic analysis of reactive capture of dilute carbon dioxide with Grignard reagents.

G R M Dowson et al.

Faraday discussions, 183, 47-65 (2015-09-16)

Carbon Dioxide Utilisation (CDU) processes face significant challenges, especially in the energetic cost of carbon capture from flue gas and the uphill energy gradient for CO2 reduction. Both of these stumbling blocks can be addressed by using alkaline earth metal

Ruthenium-Immobilized Periodic Mesoporous Organosilica: Synthesis, Characterization, and Catalytic Application for Selective Oxidation of Alkanes.

Nobuhiro Ishito et al.

Chemistry (Weinheim an der Bergstrasse, Germany), 21(44), 15564-15569 (2015-09-04)

Periodic mesoporous organosilica (PMO) is a unique material that has a crystal-like wall structure with coordination sites for metal complexes. A Ru complex, [RuCl2 (CO)3 ]2 , is successfully immobilized onto 2,2'-bipyridine (BPy) units of PMO to form a single-site

Production of all trans-beta-carotene by using impinging flow of supercritical carbon dioxide anti-solvent pulverization.

Yi-Chen Shen et al.

Journal of chromatography. A, 1270, 1-8 (2012-11-28)

This work investigated column elution chromatography coupled with supercritical anti-solvent precipitation to produce carotenoid rich microsized particulates from microalgal Dunaliella salina species. The extract contained carotenoids ranging from 61.3 mg/g(salina) to 72.5 mg/g(salina) using ultrasonic stirred ethyl ether or tetrahydrofuran

Ionic complex of risedronate with positively charged deoxycholic acid derivative: evaluation of physicochemical properties and enhancement of intestinal absorption in rats.

Jin Woo Park et al.

Archives of pharmacal research, 37(12), 1560-1569 (2013-11-21)

Risedronate is widely used clinically to treat osteoporosis, Paget's disease, hypercalcemia, bone metastasis, and multiple myeloma. However, its oral efficacy is restricted due to its low bioavailability and severe gastrointestinal adverse effects. This study was designed to evaluate the effect

Interstitial modification of palladium nanoparticles with boron atoms as a green catalyst for selective hydrogenation.

Chun Wong Aaron Chan et al.

Nature communications, 5, 5787-5787 (2014-12-20)

Lindlar catalysts comprising of palladium/calcium carbonate modified with lead acetate and quinoline are widely employed industrially for the partial hydrogenation of alkynes. However, their use is restricted, particularly for food, cosmetic and drug manufacture, due to the extremely toxic nature

Toward prediction of alkane/water partition coefficients.

Anita Toulmin et al.

Journal of medicinal chemistry, 51(13), 3720-3730 (2008-06-19)

Partition coefficients were measured for 47 compounds in the hexadecane/water ( P hxd) and 1-octanol/water ( P oct) systems. Some types of hydrogen bond acceptor presented by these compounds to the partitioning systems are not well represented in the literature

Performance of structured lipids incorporating selected phenolic and ascorbic acids.

Eliza Gruczynska et al.

Food chemistry, 173, 778-783 (2014-12-04)

Conditions applied during frying require antioxidant which is stable at these conditions and provides protection for frying oil and fried food. Novel structured lipids containing nutraceuticals and antioxidants were formed by enzymatic transesterification, exploring canola oil and naturally occurring antioxidants

Adsorption of water from aqueous acetonitrile on silica-based stationary phases in aqueous normal-phase liquid chromatography.

Jan Soukup et al.

Journal of chromatography. A, 1374, 102-111 (2014-12-30)

Excess adsorption of water from aqueous acetonitrile mobile phases was investigated on 16 stationary phases using the frontal analysis method and coulometric Karl-Fischer titration. The stationary phases include silica gel and silica-bonded phases with different polarities, octadecyl and cholesterol, phenyl

Determination of heptylphysostigmine in plasma by high-performance liquid chromatography with electrochemical detection.

L K Unni et al.

Journal of chromatography, 573(2), 275-281 (1992-01-17)

An analytical method was developed with sensitivity to detect clinically significant concentrations of heptylphysostigmine (HP), a new physostigmine derivative with potent and long-lasting inhibitory activity on cholinesterase. HP, an experimental drug for Alzheimer disease, was measured in human plasma by

Lipophilic prodrugs of nucleoside triphosphates as biochemical probes and potential antivirals.

Tristan Gollnest et al.

Nature communications, 6, 8716-8716 (2015-10-28)

The antiviral activity of nucleoside reverse transcriptase inhibitors is often limited by ineffective phosphorylation. We report on a nucleoside triphosphate (NTP) prodrug approach in which the γ-phosphate of NTPs is bioreversibly modified. A series of TriPPPro-compounds bearing two lipophilic masking

Weak coordination of neutral S- and O-donor proximal ligands to a ferrous porphyrin nitrosyl. Characterization of 6-coordinate complexes at low T.

G G Martirosyan et al.

Journal of inorganic biochemistry, 121, 129-133 (2013-02-05)

The interaction of the S- and O-donor ligands tetrahydrothiophen (THT) and tetrahydrofuran (THF) with the ferrous nitrosyl complex Fe(TTP)(NO) (TTP(2-) is meso-tetra-p-tolyl-porphyrinatodianion) was studied at various temperatures both in solid state and solution using electronic and infrared absorption spectroscopy. Upon

Early modulation of pro-inflammatory microglia by minocycline loaded nanoparticles confers long lasting protection after spinal cord injury.

Simonetta Papa et al.

Biomaterials, 75, 13-24 (2015-10-17)

Many efforts have been performed in order to understand the role of recruited macrophages in the progression of spinal cord injury (SCI). Different studies revealed a pleiotropic effect played by these cells associated to distinct phenotypes (M1 and M2), showing

Characterizing synthetic polymers and additives using new ionization methods for mass spectrometry.

Tarick J El-Baba et al.

Rapid communications in mass spectrometry : RCM, 28(11), 1175-1184 (2014-04-25)

New inlet and vacuum ionization methods provide advantages of specificity, simplicity and speed for the analysis of synthetic polymers and polymer additives directly from surfaces such as fibers using mass spectrometry (MS) on different commercial mass spectrometers (Waters SYNAPT G2

Effect of extrusion on phytochemical profiles in milled fractions of black rice.

Huihui Ti et al.

Food chemistry, 178, 186-194 (2015-02-24)

The phytochemical profile and antioxidant activities of unprocessed and extruded milled fractions of black rice were investigated. Extrusion increased the free phenolics, anthocyanins and oxygen radical absorbance capacity (ORAC) and decreased the bound forms. The total phenolics, anthocyanins and ORAC

Recognitive nano-thin-film composite beads for the enantiomeric resolution of the metastatic breast cancer drug aminoglutethimide.

Porkodi Kadhirvel et al.

Journal of chromatography. A, 1358, 93-101 (2014-07-22)

Straightforward crushing and sieving bulk polymeric R-aminoglutethimide-imprinted materials were prepared by classical free radical polymerization, whereas nano thin walled grafted imprinted materials were prepared using RAFT mediated control polymerization technique. A stoichiometric non-covalent approach based on a triply hydrogen bonding

Comparative method validation for closantel determination in cattle and sheep milk according to European Union Volume 8 and Veterinary International Conference on Harmonization guidelines.

Mathias Devreese et al.

Journal of chromatography. A, 1353, 106-113 (2014-03-25)

A specific and sensitive LC-MS/MS method was developed for quantitative determination of closantel in bovine and ovine colostrum and tank milk. Sample preparation consisted of extracting milk samples with acetonitrile/acetone (80/20, v/v) followed by SPE clean-up with Oasis mixed anion

Rectification of nanopores in aprotic solvents--transport properties of nanopores with surface dipoles.

Timothy Plett et al.

Nanoscale, 7(45), 19080-19091 (2015-11-03)

Nanopores have become a model system to understand transport properties at the nanoscale. We report experiments and modeling of ionic current in aprotic solvents with different dipole moments through conically shaped nanopores in a polycarbonate film and through glass nanopipettes.

Design, synthesis and structure-activity relationship studies of novel and diverse cyclooxygenase-2 inhibitors as anti-inflammatory drugs.

Shigeo Hayashi et al.

Journal of enzyme inhibition and medicinal chemistry, 29(6), 846-867 (2014-02-13)

Because of the pivotal role of cyclooxygenase (COX) in the inflammatory processes, non-steroidal anti-inflammatory drugs (NSAIDs) that suppress COX activities have been used clinically for the treatment of inflammatory diseases/syndromes; however, traditional NSAIDs exhibit serious side-effects such as gastrointestinal damage

Aberrant repair initiated by mismatch-specific thymine-DNA glycosylases provides a mechanism for the mutational bias observed in CpG islands.

Ibtissam Talhaoui et al.

Nucleic acids research, 42(10), 6300-6313 (2014-04-03)

The human thymine-DNA glycosylase (TDG) initiates the base excision repair (BER) pathway to remove spontaneous and induced DNA base damage. It was first biochemically characterized for its ability to remove T mispaired with G in CpG context. TDG is involved

Investigation of Lysine-Functionalized Dendrimers as Dichlorvos Detoxification Agents.

Esteban F Durán-Lara et al.

Biomacromolecules, 16(11), 3434-3444 (2015-10-16)

Lysine-containing polymers have seen broad application due to their amines' inherent ability to bind to a range of biologically relevant molecules. The synthesis of multiple generations of polyester dendrimers bearing lysine groups on their periphery is described in this report.

Delivery of antisense oligonucleotides using poly(alkylene oxide)-poly(propylacrylic acid) graft copolymers in conjunction with cationic liposomes.

Lavanya Y Peddada et al.

Journal of controlled release : official journal of the Controlled Release Society, 194, 103-112 (2014-09-07)

The clinical application of gene silencing is hindered by poor stability and low delivery efficiency of naked oligonucleotides. Here, we present the in vitro and in vivo behaviors of a rationally designed, ternary, self-assembled nanoparticle complex, consisting of an anionic

Dynamic Assessment of the Endothelialization of Tissue-Engineered Blood Vessels Using an Optical Coherence Tomography Catheter-Based Fluorescence Imaging System.

Abhijit Achyut Gurjarpadhye et al.

Tissue engineering. Part C, Methods, 21(7), 758-766 (2014-12-30)

Lumen endothelialization of bioengineered vascular scaffolds is essential to maintain small-diameter graft patency and prevent thrombosis postimplantation. Unfortunately, nondestructive imaging methods to visualize this dynamic process are lacking, thus slowing development and clinical translation of these potential tissue-engineering approaches. To

Tritiation and characterization of several suicide substrate enzyme inactivators.

Judith A Egan et al.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 94, 302-305 (2014-10-12)

Methods are presented to tritiate the enzyme inhibitors pargyline and caracemide.

Synthesis, structure, spectral characterization, electrochemistry and evaluation of antibacterial potentiality of a novel oxime-based palladium(II) compound.

Nirmalya Bandyopadhyay et al.

European journal of medicinal chemistry, 89, 59-66 (2014-12-03)

The title monomeric Pd(II) compound, [Pd(L)(Cl)], was synthesized in moderate yield out of the reaction of equimolar proportion of Na2[PdCl4] and 3-[(5-bromo-2-hydroxy-benzylidene)-hydrazono]-butan-2-one oxime (LH) in tetrahydrofuran milieu. LH is a 1:1 Schiff-base condensate of 2,3-butanedionemonoxime monohydrazone and 5-bromosalicylaldehyde. [Pd(L)(Cl)] has

Assessment of the relative performance of a confined impinging jets mixer and a multi-inlet vortex mixer for curcumin nanoparticle production.

Shing Fung Chow et al.

European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 88(2), 462-471 (2014-07-16)

The relative performance of two specially designed mixers for nanoparticle production, namely, two-stream confined impinging jets with dilution mixer (CIJ-D-M) and four-stream multi-inlet vortex mixer (MIVM), was evaluated using the model compound, curcumin (CUR), under defined conditions of varying mixing

Large defect-tailored composite scaffolds for in vivo bone regeneration.

Alfredo Ronca et al.

Journal of biomaterials applications, 29(5), 715-727 (2014-06-22)

The discovery of new strategies to repair large segmental bone defects is currently an open challenge for worldwide clinicians. In the treatment of critical-sized bone defects, an alternative strategy to traditional bone grafting is always more frequently the use of

Synthesis of variants of Marfey's reagent having d-amino acids as chiral auxiliaries and liquid-chromatographic enantioseparation of (RS)-Mexiletine in spiked plasma: assessment and comparison with L-amino acid analogs.

Ravi Bhushan et al.

Journal of chromatography. A, 1379, 43-50 (2015-01-13)

Five d-amino acids have been used for the first time to synthesize chiral derivatizing reagents (as variants of Marfey's reagent) by nucleophilic displacement of one of the fluorine atoms in 1,5-difluoro-2,4-dinitrobenzene as against the literature reports on application of only

Total, elastic, and inelastic cross sections for positron and electron collisions with tetrahydrofuran.

Luca Chiari et al.

The Journal of chemical physics, 138(7), 074301-074301 (2013-03-01)

We present total, elastic, and inelastic cross sections for positron and electron scattering from tetrahydrofuran (THF) in the energy range between 1 and 5000 eV. Total cross sections (TCS), positronium formation cross sections, the summed inelastic integral cross sections (ICS)

The potential of follicle-stimulating hormone peptide-modified triptolide-loaded nanoparticles to induce a mouse model of premature ovarian insufficiency.

Xiu-Ying Chen et al.

International journal of nanomedicine, 10, 2765-2774 (2015-04-22)

The use of triptolide (TP) is limited by its poor water solubility and severe toxicity. In this study, we developed an active drug delivery system (TP-loaded nanoparticles) that could help improve the water solubility of TP and decrease its toxicity.

Enhanced mobility of fullerene (C60) nanoparticles in the presence of stabilizing agents.

Yonggang Wang et al.

Environmental science & technology, 46(21), 11761-11769 (2012-09-15)

Experimental and mathematical modeling studies were performed to examine the effects of stabilizing agents on the transport and retention of fullerene nanoparticles (nC(60)) in water-saturated quartz sand. Three stabilizing systems were considered: naturally occurring compounds known to stabilize nanoparticles (Suwannee

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