Search Within
v1503
Filtros aplicados
Palavra-chave:'v1503'
Exibindo 1-30 of 65 resultados para "v1503" no prazo de Papéis
María B Blanco et al.
Environmental science & technology, 46(16), 8817-8825 (2012-07-18)
The products formed from the reactions of OH radicals with vinyl acetate and allyl acetate have been studied in a 1080 L quartz-glass chamber in the presence and absence of NO(x) using in situ FTIR spectroscopy to monitor the reactant
U Durán et al.
Bioresource technology, 102(2), 1644-1648 (2010-10-12)
The influence of vinyl acetate (VA) in the methanogenesis was evaluated, by using an upflow anaerobic sludge blanket reactor of 1.5L. The reactor was operated at 33.5 g/L volatile suspended solids to 30±2 °C, a hydraulic residence time of 1
María Laura Lastra et al.
Colloids and surfaces. B, Biointerfaces, 196, 111322-111322 (2020-08-26)
Recent studies have shown the relevance of growing mesenchymal stem cells (MSCs) in three-dimensional environments with respect to the monolayer cell culture on an adherent substrate. In this sense, macroporous scaffolds and hydrogels have been used as three-dimensional (3D) supports.
Matthew R Carstens et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(28), 8732-8737 (2015-07-01)
A new paradigm in oncology establishes a spectrum of tumorigenic potential across the heterogeneous phenotypes within a tumor. The cancer stem cell hypothesis postulates that a minute fraction of cells within a tumor, termed cancer stem cells (CSCs), have a
Alice Melocchi et al.
Journal of pharmaceutical sciences, 104(6), 1971-1980 (2015-03-13)
The exploitation of hot-melt extrusion and injection molding for the manufacturing of immediate-release (IR) tablets was preliminarily investigated in view of their special suitability for continuous manufacturing, which represents a current goal of pharmaceutical production because of its possible advantages
Vinyl acetate.
IARC monographs on the evaluation of carcinogenic risks to humans, 63, 443-465 (1995-01-01)
A J Cappadoro et al.
Animal reproduction science, 158, 104-108 (2015-05-30)
The purpose of this study was to develop a new injection-molded intravaginal insert manufactured from ethylene-vinyl acetate containing progesterone for a 7-day insertion period in cattle. The manufacturing process resulted in a reduction in the residual drug compared to the
Katherine Radwanski et al.
Journal of clinical apheresis, 30(3), 154-161 (2014-09-13)
The ability to cryopreserve a portion of the cells treated during extracorporeal photopheresis (ECP) would improve therapy logistics, particularly for pediatric patients, by allowing multiple therapeutic doses to be collected from a single apheresis session. However, the effect of cryopreservation
Min-Soo Kim et al.
International journal of molecular sciences, 16(5), 10821-10833 (2015-05-20)
The purpose of this study was to prepare a dutasteride-loaded solid-supersaturatable self-microemulsifying drug delivery system (SMEDDS) using hydrophilic additives with high oral bioavailability, and to determine if there was a correlation between the in vitro dissolution data and the in
Toshifumi Miyazawa et al.
Biotechnology letters, 35(4), 625-630 (2012-12-20)
Acylation of (hydroxyalkyl)phenols with vinyl esters by lipase B from Candida antarctica proceeded smoothly in a highly chemoselective manner, affording their alkyl esters exclusively or at least predominantly. The enzyme therefore discriminates between an alcoholic hydroxyl from a phenolic hydroxyl
Xiadan Luo et al.
Journal of materials science. Materials in medicine, 23(12), 3075-3082 (2012-09-15)
Non-alcoholic steatohepatitis is a burgeoning health problem. To diagnose NASH with magnetic resonance imaging (MRI), an effective contrast agent, a stable suspension of superparamagnetic Fe(3)O(4) nanoparticles, were newly developed. The negatively charged Fe(3)O(4) nanoparticles were coated with positive chitosan (CS)
Francesco Sasso et al.
Journal of biotechnology, 214, 1-8 (2015-09-02)
Kinetic modelling, molecular modelling, and experimental determination of the initial reaction velocity of lipase-catalyzed alcoholysis were combined to study the effect of the alcohol substrate to catalytic activity. The model system consisted of methanol or ethanol at varying concentrations, vinyl
Jun-Hyung Park et al.
Archives of pharmacal research, 38(7), 1336-1344 (2015-01-09)
Cilostazol is practically insoluble in water and thus results in poor bioavailability. Only a few approaches have been reported for improving the bioavailability of cilostazol. Solid dispersion technique via solvent evaporation method was applied to improve the solubility and dissolution
Ming-Cheng Lin et al.
Journal of biochemical and molecular toxicology, 25(5), 330-339 (2011-06-02)
Enantiomers of cis,cis-decahydro-2-naphthyl-N-n-butylcarbamate show stereo-specific inhibition for acetylcholinesterase and butyrylcholinesterase. For both inhibition reaction, (2S,4aR,8aS)-cis,cis-decahydro-2-naphthyl-N-n- butylcarbamate is more potent than (2R,4aS,8aR)-cis,cis-decahydro-2-naphthyl-N-n-butylcarbamate. Optically pure (2S,4aR,8aS)-(-)- and (2R,4aS,8aR)-(+)-cis,cis-decahydro-2-naphthols are resolved by the porcine pancreatic lipase-catalyzed acetylation of decahydro-2-naphthols with vinyl acetate. Absolute
M S Bogdanffy et al.
Inhalation toxicology, 13(5), 377-396 (2001-04-11)
Vinyl acetate is used in the manufacture of many polymers. The Clean Air Act Amendments of 1990 require that an inhalation risk assessment be conducted to assess risks to human health from ambient exposures. Vinyl acetate is a nasal carcinogen
Oveimar Barbosa et al.
New biotechnology, 27(6), 844-850 (2010-07-30)
Enzyme preparations of Candida antarctica B lipase (CAL-B) - immobilized on Eupergit C and partially modified Eupergit C supports - were tested for kinetic resolution of (R/S)-propranolol, using vinyl acetate as acyl donor, and toluene as organic solvent. The effects
Jing-Yun Wang et al.
Enzyme and microbial technology, 51(1), 40-46 (2012-05-15)
Lipase from Burkholderia cepacia was encapsulated inside zirconia particles by biomimetic mineralization of K₂ZrF₆ induced with protamine, a natural cationic protein. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR) were employed for the characterization
Janine Jansen et al.
Journal of controlled release : official journal of the Controlled Release Society, 147(1), 54-61 (2010-07-21)
Photo-crosslinkable, fumaric acid monoethyl ester-functionalized poly(trimethylene carbonate) oligomers were synthesized and copolymerized with N-vinyl pyrrolidone (NVP) and vinyl acetate (VAc) to form biodegradable polymer networks. The copolymerization reactions were much faster than homopolymerization of the fumarate end-groups of the macromers.
Felipe Tucca et al.
Marine pollution bulletin, 88(1-2), 174-179 (2014-10-06)
Current monitoring programs are focused on hydrophobic chemicals detection in aquatic systems, which require the collection of high volumes of water samples at a given time. The present study documents the preliminary use of the polymer ethylene vinyl acetate (EVA)
Anansa S Ahmed et al.
Scientific reports, 5, 13773-13773 (2015-09-09)
Multifunctional materials inspired by biological structures have attracted great interest, e.g. for wearable/ flexible "skin" and smart coatings. A current challenge in this area is to develop an artificial material which mimics biological skin by simultaneously displaying color change on
Roberto M Risi et al.
Organic letters, 14(4), 1180-1182 (2012-02-07)
A highly atom-economical total synthesis of (+)-patulolide C has been accomplished in three steps from the known (2R)-8-nonyn-2-ol in 49% overall yield and 93% de. A Rh(I)-catalyzed asymmetric hydroformylation (AHF)/ intramolecular Wittig olefination cascade was utilized to set the C4-hydroxyl
Lipases efficiently stearate and cutinases acetylate the surface of arabinoxylan films.
Stepan AM
Journal of Biotechnology, 167(1), 16-23 (2013)
Andreea Botezatu et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 32(7), 1199-1206 (2015-04-22)
3-Alkyl-2-methoxypyrazines (MPs) are odour-active compounds that elicit atypical green aromas and flavours in some wines, and are resilient to removal using traditional wine-making approaches. They originate either as contaminants from Coccinellidae beetles inadvertently introduced during wine processing ("ladybug taint") or
B Picquet-Varrault et al.
Environmental science & technology, 44(12), 4615-4621 (2010-05-25)
Vinyl acetate is widely used in industry. It has been classified as a high-production volume (HPV) chemical in the United States. To evaluate its impact on the environment and air quality, its atmospheric reactivity toward the three main tropospheric oxidants
Ping Xu et al.
Polymers, 11(2) (2019-04-10)
Hyperbranched polycaprolactone with controlled structure was synthesized by reversible addition-fragmentation chain transfer radical ring-opening polymerization along with self-condensed vinyl polymerization (SCVP) of 2-methylene-1,3-dioxepane (MDO). Vinyl 2-[(ethoxycarbonothioyl) sulfanyl] propanoate (ECTVP) was used as polymerizable chain transfer agent. Living polymerization behavior was
Anna Piperno et al.
The Journal of organic chemistry, 75(9), 2798-2805 (2010-04-17)
A new template of C-4'-truncated phosphonated nucleosides (TPCOANs) has been obtained in good yields according to two different routes which exploit the reactivity of a phosphonated nitrone. The one-step procedure based on the 1,3-dipolar cycloaddition of a phosphonated nitrone with
Hercules V Ferreira et al.
Molecules (Basel, Switzerland), 17(8), 8955-8967 (2012-07-28)
The lipase B from Candida antarctica (Novozym 435®, CALB) efficiently catalyzed the kinetic resolution of some aliphatic secondary alcohols: (±)-4-methylpentan-2-ol, (±)-5-methylhexan-2-ol, (±)-octan-2-ol, (±)-heptan-3-ol and (±)-oct-1-en-3-ol. The lipase showed excellent enantioselectivities in the transesterifications of racemic aliphatic secondary alcohols producing the
K Wlodarski et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 96, 237-246 (2015-08-08)
The aim of this paper was to evaluate physical stability of solid dispersions in respect to the drug, tadalafil (Td), in vinylpyrrolidone and vinyl acetate block copolymer (PVP-VA). Nine solid dispersions of Td in PVP-VA (Td/PVP-VA) varied in terms of
Ellen Holthoff et al.
Sensors (Basel, Switzerland), 10(3), 1986-2002 (2010-01-01)
We report on the development of a microelectromechanical systems (MEMS)-scale photoacoustic sensor for the detection of trace gases. A mid-infrared quantum cascade laser (QCL) was used to determine detection limits for acetic acid, acetone, 1,4-dioxane, and vinyl acetate. The source
Eun-Sol Ha et al.
Drug design, development and therapy, 9, 3257-3266 (2015-07-08)
The present study was carried out to develop an oral formulation of pranlukast hemihydrate with improved dissolution and oral bioavailability using a surface-modified microparticle. Based on solubility measurements, surface-modified pranlukast hemihydrate microparticles were manufactured using the spray-drying method with hydroxypropylmethyl
Página 1 de 3