Showing 1-30 of 41 results for "103004"
J G Seidman et al.
Nature, 276(5690), 790-795 (1978-12-21)
Cloned segments of mouse chromosomal DNA provide direct evidence for the somatic rearrangement of kappa variable and constant region genes in antibody producing cells. This rearrangement apparently affects only one member of an allelic pair of light chain genes.
Walter F Schmidt et al.
Chemistry and physics of lipids, 142(1-2), 23-32 (2006-04-18)
Stearic acid (SA) is highly soluble in structurally diverse solvents. SA/solvent packing within a (24.8 A)3 cubic volume explains the stoichiometry of SA solubility at multiple temperatures in multiple solvents. In the absence of solvent, the cubic volume contains 25...
Serife Saçmaci et al.
Analytica chimica acta, 623(1), 46-52 (2008-07-10)
A method for speciation, preconcentration and separation of Fe(II) and Fe(III) in different matrices was developed using solvent extraction and flame atomic absorption spectrometry. 4-Acetyl-5-methyl-1-phenyl-1H-pyrazole-3-carboxylic acid (AMPC) was used as a new complexing reagent for Fe(III). The Fe(III)-AMPC complex was...
Profile of volatile metabolites in human urine.
A Zlatkis et al.
Clinical chemistry, 17(7), 592-594 (1971-07-01)
Smita Raghuvanshi et al.
Biodegradation, 21(1), 31-42 (2009-06-27)
Methyl iso-butyl ketone (MIBK) is a widely used volatile organic compound (VOC) which is highly toxic in nature and has significant adverse effects on human beings. The present study deals with the removal of MIBK using biodegradation by an acclimated...
David J S Patinha et al.
Polymers, 12(9) (2020-08-28)
In this contribution, thin poly(ionic liquid) (PIL) coatings with a well-defined pore structure built up from interpolyelectrolyte complexation between a PIL and poly(acrylic acid) (PAA) were successfully used for enhanced solid phase microextraction (SPME). The introduction of porosity with tunable...
Matthew D Stout et al.
Toxicology, 244(2-3), 209-219 (2008-01-08)
Methyl isobutyl ketone (MIBK) is primarily used as a denaturant for rubbing alcohol, as a solvent and in the manufacture of methyl amyl alcohol. Inhalation of vapors is the most likely route of exposure in the work place. In order...
Nathalie Moreira et al.
Food chemistry, 270, 518-526 (2018-09-04)
A method based on headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-triple quadrupole/mass spectrometry detection (GC-TQ/MS) with a prior derivatization step with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride (PFBHA) was developed to quantify carbonyl compounds in different categories of Port wines. Optimal extraction conditions...
Toshio Kawai et al.
Industrial health, 49(1), 24-29 (2010-09-09)
To facilitate urine sample preparation prior to head-space gas-chromatographic (HS-GC) analysis. Urine samples containing one of the five solvents (acetone, methanol, methyl ethyl ketone, methyl isobutyl ketone and toluene) at the levels of biological exposure limits were aspirated into a...
Mshari A Alotaibi et al.
Chemical communications (Cambridge, England), 48(57), 7194-7196 (2012-06-12)
Acidic heteropoly salt Cs(2.5)H(0.5)PW(12)O(40) doped with Pt nanoparticles is a highly active and selective catalyst for one-step hydrogenation of methyl isobutyl and diisobutyl ketones to the corresponding alkanes in the gas phase at 100 °C with 97-99% yield via metal-acid...
Sebastian L Riedel et al.
Biotechnology and bioengineering, 110(2), 461-470 (2012-08-21)
Reduced downstream costs, together with high purity recovery of polyhydroxyalkanoate (PHA), will accelerate the commercialization of high quality PHA-based products. In this work, a process was designed for effective recovery of the copolymer poly(hydroxybutyrate-co-hydroxyhexanoate) (P(HB-co-HHx)) containing high levels of HHx...
Kieron J Doick et al.
Environmental science & technology, 39(17), 6575-6583 (2005-09-30)
Organic matter is considered to be the single most importantfactor limiting availability and mobility of persistent organic pollutants (POPs) in soil. This study aimed to characterize the distribution of 14C-PCB (congeners 28 and 52) and 14C-PAH (fluoranthene and benzo[a]pyrene) residues...
Takaya Hoshikawa et al.
Chemical & pharmaceutical bulletin, 60(4), 548-553 (2012-04-03)
Intramolecular [2+2] cycloaddition of γ,δ-unsaturated ketenes derived from hex-5-enoyl chloride derivatives gave bicyclo[2.1.1]hexan-5-ones with complete regioselectivity.
Ting-Ke Tseng et al.
Chemosphere, 61(4), 469-477 (2005-10-06)
Environmental catalysis also can refer to catalytic technologies for reducing emission of environmentally unacceptable compounds. Catalytic decomposition also is one of the cost-effective technologies to solve the troublesome volatile organic compounds. This study treated methyl isobutyl ketone (MIBK) by a...
Shakil A Saghir et al.
Regulatory toxicology and pharmacology : RTP, 52(2), 180-188 (2008-09-16)
Methyl isobutyl ketone (MIBK) is a solvent used in numerous products and processes and may be present in the air of the workplace as a vapor. The American Conference of Governmental Industrial Hygienists (ACGIH) threshold limit value-time-weighted average (TLV-TWA) and...
Fangfang Zeng et al.
Insect biochemistry and molecular biology, 113, 103213-103213 (2019-08-24)
Mosquitoes rely heavily on the olfactory system to find a host for a bloodmeal, plants for a source of energy and suitable sites for oviposition. Here, we examined a cluster of eight odorant receptors (ORs), which includes one OR, CquiOR1...
Handbook of Chemicals and Safety (2016)
National Toxicology Program technical report series, (538)(538), 1-236 (2007-06-09)
Methyl isobutyl ketone is used as a denaturant for rubbing alcohol; as a solvent for paints, varnishes, nitrocellulose, lacquers, and protective coatings; in industrial extraction processes; in dry-cleaning preparations; and in the synthesis of methyl isobutyl carbinol. Methyl isobutyl ketone...
Kayoko Minakata et al.
Analytica chimica acta, 651(1), 81-84 (2009-09-08)
A rapid and sensitive electrospray ionization tandem mass spectrometric (ESI-MS-MS) procedure was developed for the determination of cyanide (CN(-)). CN(-) in biological fluids was reacted with NaAuCl(4) to produce dicyanogold, Au(CN)(2)(-), which was extracted with methyl isobutyl ketone (MIBK). One...
Ryan M Bradley et al.
Biochimica et biophysica acta, 1851(12), 1566-1576 (2015-09-30)
The acylglycerophosphate acyltransferase/lysophosphatidic acid acyltransferase (AGPAT/LPAAT) family is a group of homologous acyl-CoA-dependent lysophospholipid acyltransferases. We performed studies to better understand the subcellular localization, activity, and in vivo function of AGPAT4/LPAATδ, which we found is expressed in multiple mouse brain...
Silawan Somboonchan et al.
Food chemistry, 195, 79-86 (2015-11-18)
The effect of modulating the gelatinisation extent by hydration (50/50 and 80/20 water to starch ratio) and temperature (65 or 85 °C) on various properties of wheat starch in presence of flavours has been studied. The hydrothermal treatments resulted in...
J W Griffin
Neurobehavioral toxicology and teratology, 3(4), 437-444 (1981-01-01)
The neurotoxicity of hexacarbon solvents has become apparent only recently, but an extensive literature has already developed as a result of the clinical and epidemiological implications of the human disease, and the advantages of small animal models of hexacarbon neurotoxicity...
Mao Ting et al.
The Science of the total environment, 390(1), 97-108 (2007-11-03)
Volatile organic compounds (VOCs) in the air of Beijing City were measured at the heights of 8, 32, 140 and 280 m on the Beijing 325 m meteorological tower in autumn 2005. Concentrations of fifty-five compounds were determined by quantitative...
David Quesnel et al.
Water research, 39(4), 677-687 (2005-02-15)
An industrial wastewater that was pretreated by an aerobic thermophilic bacterial consortium (THE) was subjected to additional treatability studies by granular activated carbon (GAC) and a conventional activated sludge (CAS). The removal of dissolved organic carbon (DOC) in both systems...
Eric Loeser et al.
Journal of chromatography. A, 1216(15), 3409-3412 (2009-02-25)
It has recently been shown that the use of strong organic solvents as diluent is possible in RPLC, provided that the solvent used as diluent is retained more strongly by the column than the analytes in the sample. In this...
Daekeun Kim et al.
Chemosphere, 64(8), 1362-1368 (2006-02-10)
Single and ternary solute gas phase adsorption isotherms were conducted in this study to evaluate the effectiveness of a simple constant volume method, which was utilized by using Tedlar gas sampling bags as a constant volume batch reactor. For this...
Ting-Ke Tseng et al.
Journal of hazardous materials, 122(1-2), 155-160 (2005-05-26)
Catalytic oxidation is one of the cost-effective technologies to solve the troublesome volatile organic compounds. This study treated methyl-isobutyl-ketone (MIBK) by a commercial catalyst, Pt/gamma-Al(2)O(3), in a fixed-bed reactor. The effects of operating factors, such as operating temperature, MIBK concentration...
David Quesnel et al.
Journal of hazardous materials, 132(2-3), 253-260 (2005-11-24)
Removal rates of acetone and methyl isobutyl ketone (MIBK) were determined singularly and in combination in batch experiments employing an acclimatized activated sludge from a pilot system treating an organic chemical manufacturer industrial wastewater, as well as during the course...
"Wacker oxidation of 1-hexene in 1-n-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]), supercritical (SC) CO2, and SC CO2/[bmim][PF6] mixed solvent"
Hou Z, et al.
New. J. Chem., 26(09), 1246-1248 (2002)
Bo Sahlberg et al.
The Science of the total environment, 444, 433-440 (2013-01-03)
There are few studies on associations between airborne microbial exposure, formaldehyde, plasticizers in dwellings and the symptoms compatible with the sick building syndrome (SBS). As a follow-up of the European Community Respiratory Health Survey (ECRHS II), indoor measurements were performed...

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.