Showing 1-30 of 31 results for "isopentane"
Kinetics of Isopentane Dehydrogenation on Chromia-Alumina Catalyst with Catalyst Fouling
Noda H, et al.
J. Chem. Eng. Jpn., 7(2), 110-116 (1974)
S Chiba et al.
Nihon hoigaku zasshi = The Japanese journal of legal medicine, 45(2), 128-137 (1991-04-01)
n-Pentane and isopentane have a wide range of use, for example, for cleaning precision machinery, extracting essence and oil, and as liquid fuel for now very popular disposable lighters. They are contained in liquefied petroleum gas and natural gas as...
2-Methylbutane (isopentane). CAS# 78-78-4.
J B Galvin et al.
Journal of toxicology and environmental health. Part A, 58(1-2), 23-33 (1999-10-28)
Burn caused by isopentane and liquefied petroleum gas in an insecticide.
N Oiso et al.
Journal of the European Academy of Dermatology and Venereology : JEADV, 23(2), 170-171 (2008-04-16)
Power efficient synthesis of isoprene via two-stage dehydrogenation of isopentane
Karimov OK & Daminev RR
World Applied Sciences Journal , 24(3), 320-325 (2013)
Joël Reignier et al.
Journal of colloid and interface science, 552, 153-165 (2019-05-28)
This paper presents an investigation of the morphology of growing polyurethane (PU) rigid foams during the very first seconds of the process by cryogenic scanning electron microscopy (cryo-SEM) performed at -150 °C. The heterogeneous nature of the initial mixture has been...
Susanne Steu et al.
Virchows Archiv : an international journal of pathology, 452(3), 305-312 (2008-02-07)
Different methods for snap freezing surgical human tissue specimens exist. At pathology institutes with higher work loads, solid carbon dioxide, freezing sprays, and cryostat freezing are commonly used as coolants for diagnosing frozen tissue sections, whereas for tissue banking, liquid...
Chia-Hsiang Lai et al.
Environmental monitoring and assessment, 184(7), 4015-4028 (2011-08-09)
The concentrations of 56 volatile organic hydrocarbons (VOCs) were measured simultaneously in the southbound bore, the northbound bore and the exhaust air shafts of the Hsuehshan tunnel near Yilan, Taiwan during 2007 and 2008. A total of 60 integrated air...
G Seidel et al.
Journal of neuroimaging : official journal of the American Society of Neuroimaging, 8(2), 83-87 (1998-04-29)
Ultrasound contrast agents improve the signal-to-noise ratio of reflected ultrasound, enhancing the diagnostic value of transcranial Doppler (TCD). In dog studies, we investigated the time course of TCD signal amplitude after application of a phospholipid-containing ultrasound contrast agent (BY963) filled...
D S Sapse et al.
Cancer investigation, 17(6), 396-401 (1999-08-06)
The complex formed by isopentane, as a model for the isoleucine residue present in the wild-type thymidylate synthase, with 4-mercaptopyridine as a fragment of the thymidylate synthase inhibitor Thymitaq (AG337) is investigated with ab initio quantum chemical calculations at Hartree-Fock...
Erin N Sharp et al.
The journal of physical chemistry. A, 112(7), 1445-1456 (2008-01-24)
Cavity ringdown spectra of the A-X electronic transition of all eight isomers of the pentyl peroxy radical are reported. Using the corresponding assignments from previously studied smaller alkyl peroxy radicals, assignments of origin bands are made for the pentyl peroxy...
A L Tsai et al.
Analytical biochemistry, 264(2), 165-171 (1998-12-29)
A new method has been developed for sample packing in rapid freeze-quench electron paramagnetic resonance spectroscopy (EPR) kinetic experiments. Sample particles freeze-quenched in chilled isopentane are filtered under pressure through a stainless steel funnel attached to an EPR tube fitted...
E R Mohler et al.
Journal of chromatography. B, Biomedical applications, 685(2), 201-209 (1996-10-25)
Lipid peroxidation is thought to be an important event in the pathogenesis of atherosclerosis. It has been suggested that pentane, which can be formed during the oxidation of omega-6 fatty acids, is a marker of lipid peroxidation. Previous studies have...
Gary L Bratthauer
Methods in molecular biology (Clifton, N.J.), 588, 67-73 (2009-12-17)
The analysis of frozen tissue by antibodies can be accomplished by the quick freezing of a small tissue sample in liquid nitrogen. Super-cooled isopentane can also be used to further the preservation process. Freezing preserves the available proteins in a...
Hao-Chieh Hsieh et al.
Journal of chromatography. A, 1629, 461484-461484 (2020-09-06)
Isomers, holding similar chemical and physical properties, are difficult to separate especially by utilizing a microfabricated gas chromatography system due to limited column lengths mainly imposed by low-pressure (<20 kPa) micropump capability. In this paper, we demonstrated the separation of...
Dorota Haznar-Garbacz et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 81(2), 334-338 (2012-03-20)
A novel liquefied gas based drug delivery system for the oral delivery of liquid and semi-solid drug formulations is presented. The capsule-shaped system is equipped with a capillary as an element controlling the release rate. The delivery mechanism is based...
K R Wagner et al.
Journal of the neurological sciences, 34(3), 373-390 (1977-12-01)
Extensor digitorum longus muscles of rats were removed and injected with a solution of Marcaine plus hyaluronidase. After incubation in Marcaine solution for 10 min, the muscles were grafted into their original beds. The grafts and the contralateral control muscles...
A D Moodie et al.
Analytical biochemistry, 189(1), 103-106 (1990-08-15)
A design for an improved freeze-quench apparatus is presented. A freeze-quench apparatus has two main parts: the apparatus which mixes the reactants and after a set time sprays the reacting mixture into the quencher, and the quenching apparatus itself. The...
Christopher Redwood et al.
Photochemistry and photobiology, 91(3), 607-615 (2014-10-21)
cis-1,2-Di(1-methyl-2-naphthyl)ethene, c-1,1, undergoes photoisomerization in methylcyclohexane, isopentane and diethyl ether/isopentane/ethanol glasses at 77 K. On 313 nm excitation the fluorescence of c-1,1 is replaced by fluorescence from t-1,1. Singular value decomposition reveals that the spectral matrices behave as two component...
Josh D Engstrom et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 65(2), 149-162 (2006-10-03)
The mechanisms for the formation of high surface area lysozyme particles in spray freezing processes are described as a function of spray geometry and atomization, solute concentration and the calculated cooling rate. In the spray freeze-drying (SFD) process, droplets are...
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...
Iván Durán et al.
Microscopy research and technique, 74(5), 440-448 (2010-09-11)
Fixation and embedding are major steps in tissue preservation for histological analysis. However, conventional fixatives like aldehyde-based solutions usually mask tissular epitopes preventing their immunolocalization. Alternative fixation methods used to avoid this drawback, such as cryopreservation, alcohol- or zinc salts-based...
Marcel Kap et al.
Biopreservation and biobanking, 13(3), 200-206 (2015-06-04)
The advent of molecular characterization of tissues has brought an increasing emphasis on the quality of biospecimens, starting with the tissue procurement process. RNA levels are particularly affected by factors in the collection process, but the influence of different pre-analytical...
Y C Hsu et al.
Chemosphere, 42(3), 227-234 (2000-12-02)
Motor vehicle emission factors of carbon monoxide (CO) and non-methane volatile organic compounds (NMVOCs) were calculated inside the Chung-Cheng Tunnel of Kaohsiung in Taiwan. The results were compared with those model predictions from the Mobile Taiwan 2.0 model. Individual concentrations...
John E Bercaw et al.
Journal of the American Chemical Society, 130(36), 11988-11995 (2008-08-14)
InI3 catalyzes the reaction of branched alkanes with methanol to produce heavier and more highly branched alkanes, which are more valuable fuels. The reaction of 2,3-dimethylbutane with methanol in the presence of InI3 at 180-200 degrees C affords the maximally...
H B Chen et al.
Current eye research, 17(6), 642-649 (1998-07-15)
To investigate the histochemistry of the tear film, conjunctival goblet cells and corneal superficial epithelial cells by an in vivo cryofixation with the freeze-substitution method. Following rapid freezing of the eyeballs by an isopentane-propane mixture cooled by liquid nitrogen directly...
Kjell Arild Danielsen et al.
Acta oto-laryngologica, 136(1), 109-112 (2015-09-26)
Biofilms were more prevalent in patients with CRSwNP compared to both CRSsNP and controls, and also on the ethmoid bulla compared to the middle turbinate, supporting a biofilm-related pathogenesis of CRSwNP. To investigate the prevalence of biofilms in patients with...
Yun-Chao Chen et al.
Cell biochemistry and biophysics, 60(3), 267-273 (2011-01-22)
The pluronic block copolymers are able to enhance the ultrasound-induced gene delivery in vitro. In the present study, the effects of pluronics on the efficiency of gene transfer into skeletal muscle in vivo under sonoporation were investigated. Plasmid DNA encoding...
Marie Verriele et al.
Talanta, 144, 294-302 (2015-10-11)
Passive sampling technology has been extensively used for long-term VOC atmospheric concentrations' monitoring. Its performances regarding the short-term measurements and related to VOC from biogas were evaluated in this work: laboratory scale experiments have been conducted in order to check...
Gabriel Alejandro Bonaterra et al.
PloS one, 11(3), e0151116-e0151116 (2016-03-18)
Fibromyalgia (FM) is a chronic musculoskeletal pain disorder, characterized by chronic widespread pain and bodily tenderness and is often accompanied by affective disturbances, however often with unknown etiology. According to recent reports, physical and psychological stress trigger FM. To develop...

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