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显示 1-30 共 88 条结果 关于 "45993" 范围 论文
Shengliu Wang et al.
Journal of colloid and interface science, 389(1), 126-133 (2012-10-03)
When dispersion polymerization of styrene (St) had run for 3h, after particle rapidly growing stage, 4,4'-dimethacryloyloxybenzophenone (DMABP) cross-linker was added to reaction system and photoreactive, core(PSt)-shell(Poly(St-co-DMABP)) particles with rich benzophenone (BP) groups on surface were prepared. Polymerization of DMABP could
Kesheng Wu et al.
Talanta, 129, 431-437 (2014-08-17)
A magnetic solid-phase extraction method (MSPE) was developed to pre-concentrate and cleanup clenbuterol (CLE) from pork muscle. Novel sulfonated polystyrene magnetic nanobeads (spMNBs) were synthesized via a one-pot emulsion copolymerization method by using divinylbenzene, styrene, and sodium styrene sulfonate in
Aisling Mooney et al.
Applied microbiology and biotechnology, 72(1), 1-1 (2006-07-11)
Large quantities of the potentially toxic compound styrene are produced and used annually by the petrochemical and polymer-processing industries. It is as a direct consequence of this that significant volumes of styrene are released into the environment in both the
GC/MS-based analysis of volatile metabolic profile along in vitro differentiation of human induced pluripotent stem cells
Capuano R, et al.
Scientific reports (2017)
Seon Ju Yeo et al.
Soft matter, 11(8), 1582-1588 (2015-01-17)
Colloidal photonic crystals (CPCs) provide a convenient way to generate structural colour with high stability against degradation under environmental factors. For a number of applications including flexible electronic and energy devices, it is important to generate flexible structural colour that
Rachel Morrison et al.
Pharmaceutical research, 31(10), 2904-2917 (2014-05-06)
To design and synthesize chemoembolization particles for the delivery of Ophiobolin A (OphA), a promising fungal-derived chemotherapeutic, directly at the tumour location. To investigate cell death mechanism of OphA on a Rhabdomyosarcoma cancer (RD) cell line. Rhabdomyosarcoma is the most
Chun-Yu Ho et al.
Angewandte Chemie (International ed. in English), 54(15), 4512-4516 (2015-02-07)
An asymmetric tail-to-tail cross-hydroalkenylation of vinylarenes with terminal olefins was achieved by catalysis with NiH complexes bearing chiral N-heterocyclic carbenes (NHCs). The reaction provides branched gem-disubstituted olefins with high enantioselectivity (up to 94 % ee) and chemoselectivity (cross/homo product ratio: up to
E Roemer et al.
Regulatory toxicology and pharmacology : RTP, 70 Suppl 1, S2-14 (2014-12-17)
This publication introduces a series of six other publications describing the toxicological assessment of kretek cigarettes, i.e., cigarettes characterized primarily by the use of a significant amount of cloves as an ingredient added to the tobacco. This paper presents background
Xiaomeng Li et al.
Colloids and surfaces. B, Biointerfaces, 102, 210-217 (2012-09-26)
Hyaluronic acid (HA) is an important component of extracellular matrix (ECM) in many tissues, providing a hemocompatible and supportive environment for cell growth. In this study, glycidyl methacrylate-hyaluronic acid (GMHA) was first synthesized and verified by proton nuclear magnetic resonance
Evert Boymans et al.
Dalton transactions (Cambridge, England : 2003), 42(1), 137-142 (2012-10-30)
Usually the Rh-catalyzed hydroformylation of styrene predominantly yields the branched, chiral aldehyde. An inversion of regioselectivity can be achieved using strong π-acceptor ligands. Binaphthol-based diphosphite and bis(dipyrrolyl-phosphorodiamidite) ligands were applied in the Rh-catalyzed hydroformylation of styrene. High selectivities up to
You Jin Choi et al.
Journal of chromatography. A, 1314, 306-312 (2013-09-26)
Solution styrene-butadiene rubber (SSBR) is mainly constituted of a random copolymer of styrene and butadiene. SSBR usually contains microgels, having ultrahigh molecular weight (M>10(7)g/mol), affecting rheological properties of the rubber. Thus, determinations of M and size distribution of these microgels
I Capek
Advances in colloid and interface science, 92(1-3), 195-233 (2001-10-05)
The principal subject discussed in the current paper is the radical polymerization of styrene in the three- and four component microemulsions stabilized by a cationic emulsifier. Polymerization in the o/w microemulsion is a new polymerization technique which allows to prepare
ChengXiao Wang et al.
AAPS PharmSciTech, 13(4), 1179-1189 (2012-09-11)
A novel drug-in-adhesive matrix was designed and prepared. A thermoplastic elastomer, styrene-isoprene-styrene (SIS) block copolymer, in combination with tackifying resin and plasticizer, was employed to compose the matrix. Capsaicin was selected as the model drug. The drug percutaneous absorption, adhesion
I Linhart
Drug metabolism reviews, 33(3-4), 353-367 (2002-01-05)
Metabolism of styrene, an important industrial monomer, is reviewed. Attention is focused on the stereoselectivity of its oxidation to 7,8-styrene oxide as well as on further stereoselective biotransformation by hydrolytic and mercapturic acid pathway. Toxic effects such as mutagenicity, genotoxicity
Jaime Martín et al.
Nature communications, 5, 5130-5130 (2014-10-25)
Three-dimensional (3D) nanostructures combine properties of nanoscale materials with the advantages of being macro-sized pieces when the time comes to manipulate, measure their properties or make a device. However, the amount of compounds with the ability to self-organize in ordered
Visible light photocatalysis of [2+2] styrene cycloadditions by energy transfer.
Zhan Lu et al.
Angewandte Chemie (International ed. in English), 51(41), 10329-10332 (2012-09-12)
Giovanna Tranfo et al.
La Medicina del lavoro, 103(5), 402-412 (2012-10-20)
Styrene is used in manufacturing fiberglass reinforced plastics: and occupational exposure was related to neurotoxicology and genotoxicity. The sum of the metabolites mandelic and phenylglyoxylic acids is the ACGIH biomarker for occupational exposure with a BEI of 400 mg/g of
Shouying Li et al.
Macromolecular bioscience, 15(3), 318-327 (2014-12-17)
We investigated the cellular uptake behavior and cell viability of semiconducting polymer dots (Pdots) on human gastric adenocarcinoma (SGC-7901) cells and human gastric mucosal (GES-1) cells. MTT studies indicate the Pdot treatment induces obvious cell proliferation in both types of
A comprehensive evaluation of the potential health risks associated with occupational and environmental exposure to styrene.
Joshua T Cohen et al.
Journal of toxicology and environmental health. Part B, Critical reviews, 5(1-2), 1-265 (2002-05-16)
C R Kirman et al.
Journal of toxicology and environmental health. Part A, 75(21), 1280-1297 (2012-10-04)
A screening-level risk assessment was conducted for styrene-acrylonitrile (SAN) Trimer detected at the Reich Farm Superfund site in Toms River, NJ. Consistent with a screening-level approach, on-site and off-site exposure scenarios were evaluated using assumptions that are expected to overestimate
Michał Brokl et al.
Journal of chromatography. A, 1370, 216-229 (2014-12-03)
A method involving headspace solid-phase microextraction (HS-SPME) and comprehensive two-dimensional gas chromatography (GC×GC) coupled to time-of-flight mass spectrometry (TOFMS) was developed and applied to evaluate profiles of volatile compounds present in mainstream tobacco smoke particulate matter trapped on glass fiber
Sandra Ritz et al.
Biomacromolecules, 16(4), 1311-1321 (2015-03-21)
Understanding nanoparticle-protein interactions is a crucial issue in the development of targeted nanomaterial delivery. Besides unraveling the composition of the nanoparticle's protein coronas, distinct proteins thereof could control nanoparticle uptake into specific cell types. Here we differentially analyzed the protein
Peter J Oefner et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 782(1-2), 27-55 (2002-11-30)
The introduction of alkylated, nonporous poly-(styrene-divinylbenzene) microparticles in 1992 enabled the subsequent development of denaturing HPLC that has emerged as the most sensitive screening method for mutations to date. Denaturing HPLC has provided unprecedented insight into human origins and prehistoric
Ya-Jie Xie et al.
Analytical and bioanalytical chemistry, 404(10), 3189-3194 (2012-10-12)
Near infrared spectroscopy (NIRS) has been proved to be a powerful analytical tool in different fields. However, because of the low sensitivity in near infrared region, it is a significant challenge to detect trace analytes with normal NIRS technique. A
Mária Poláková et al.
Central European journal of public health, 20(3), 226-232 (2013-01-05)
Mandelic acid (MA) is an important metabolite of styrene. In humans, measurement of its concentration in urine provides an important assessment of the overall level of styrene exposure in workers of the reinforced plastic manufacturing industry. The aim of our
N A Brown et al.
Regulatory toxicology and pharmacology : RTP, 32(3), 228-247 (2001-02-13)
The reproductive and developmental toxicity of styrene has been studied in animals and humans. The animal studies on styrene have diverse study designs and conclusions. Developmental or reproductive toxicity studies have been conducted in rats, mice, rabbits, and hamsters. In
Joanna Stragierowicz et al.
Medycyna pracy, 63(5), 565-572 (2013-02-05)
Based on the studies performed a sensitive and simple method for the determination of benzene and styrene metabolites in urine has been developed. The developed procedure can be used for biological monitoring of occupational and environmental exposure. Urine samples for
Taicheng An et al.
ACS applied materials & interfaces, 4(11), 5988-5996 (2012-11-08)
The carbon nanotube (CNT)-sub-micrometer-sized anatase TiO₂ sphere composite photocatalysts were synthesized by a facile one-step hydrothermal method using titanium tetrafluoride as titanium source and CNTs as structure regulator. Various technologies including X-ray diffraction, UV-visible absorption spectra, N₂ adsorption-desorption, scanning electron
Gregory S Doerk et al.
Nature communications, 5, 5805-5805 (2014-12-17)
Block copolymer directed self-assembly is an attractive method to fabricate highly uniform nanoscale features for various technological applications, but the dense periodicity of block copolymer features limits the complexity of the resulting patterns and their potential utility. Therefore, customizability of
B W Lawton et al.
International archives of occupational and environmental health, 79(2), 93-102 (2005-09-10)
The objective of this study was to review critically a number of occupational investigations of the exposure and effect relation between inhaled styrene vapour and hearing loss. There is concern that workers' hearing may be impaired by exposure to styrene
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