搜索结果: 1-15 共查到“n-alkanes”相关记录15条 . 查询时间(0.07 秒)
δD values of individual n-alkanes in sediments from the Chaka salt lake (China) and terrestrial plants from the surrounding area
Chaka salt lake sediment plant n-alkane hydrogen isotope biological source
2017/4/11
Molecular distribution and compound-specific hydrogen isotopic ratios (δD) of n-alkanes in shallow-water surface
sediments from the Chaka salt lake and from various terrestrial plants in the surround...
Distribution and isotopic composition of n-alkanes from grass, reed and tree leaves along a latitudinal gradient in China
plant n-alkanes carbon isotopes hydrogen isotopes China
2017/4/12
Molecular composition and compound-specific carbon and hydrogen stable isotope ratios of n-alkanes are presented
for leaves of grass, reeds and trees from five regions extending between latitudes 22°...
Compound-specific stable carbon and hydrogen isotopic compositions of n-alkanes in urban atmospheric aerosols from Tokyo
δD, δ13C, n-alkane urban aerosols Tokyo
2017/8/9
Stable carbon (δ13C) and hydrogen (δD) isotopic compositions of n-alkanes in total suspended particles from Tokyo were measured to decipher their source and transport in the polluted urban atmosphere....
Observed and simulated global distribution and budget of atmospheric C2-C5 alkanes
global distribution atmospheric C2-C5 alkanes
2010/8/12
The primary sources and atmospheric chemistry of C2-C5 alkanes were incorporated into the atmospheric chemistry general circulation model EMAC. Model output is compared with new observations from the ...
Size-distributions of n-alkanes, PAHs and hopanes and their sources in the urban, mountain and marine atmospheres over East Asia
n-alkanes PAHs hopanes marine atmospheres East Asia
2009/12/3
Size-segregated (9 stages) n-alkanes, polycyclic aromatic hydrocarbons (PAHs) and hopanes in the urban (Baoji city in inland China), mountain (Mt. Tai in east coastal China) and marine (Okinawa Island...
Effects of Molecular Structures of Alkanes on Peroxide Formation and Cetane Number Improvement by Autoxidation
Diesel fuel Hydroperoxide Autoxidation Polynuclear aromatic hydrocarbon
2009/7/24
Diesel fuels having poor ignition properties would induce problems such as diesel knock and engine starting problems in cold weather. Diesel fuels in such cases need to have improved ignition propert...
Measurement of Particulate n-alkanes and PAHs Inside and Outside a Temple in Xiamen, China
Incense burning Particulate matter n-alkanes Polycyclic aromatic hydrocarbons Health risk
2016/3/29
Total suspended particles samples inside and outside the South Pu-Tuo Temple (SPT), a traditional
Buddhist temple in Xiamen, China were collected and further analyzed for n-alkanes and polycyclic
ar...
Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes
Kinetics gas-phase reactions OH radicals alkanes cycloalkanes
2009/3/11
The available database concerning rate constants for gas-phase reactions of the hydroxyl (OH) radical with alkanes through early 2003 is presented over the entire temperature range for which measureme...
Hydrogen isotope ratios of terrigenous n-alkanes in lacustrine surface sediment of the Tibetan Plateau record the precipitation signal
n-alkanes lacustrine sediment terrestrial origin hydrogen isotope ratio precipitation climate
2017/8/10
Hydrogen isotope ratios were measured on terrigenous alkanes (n-C25 to n-C31) extracted from recent lake surface sediments from the climatically and environmentally distinct basins Qiangyong Glacier L...
Activation of Light Alkanes on Pure and Fe and Al Doped Silica Clusters: A Density Functional and ONIOM Study
C-H bond activation methane ethane, silica Fe doping Al doping density functional DFT ONIOM
2010/4/16
C-H bond activation was studied by use of density functional theory (DFT) and ONIOM calculations as implemented in Gaussian 2003 at the B3LYP level utilising 6-31G* as the basis set for Si, Al, and Fe...
Use of N-alkanes to Estimate Intake and Digestibility by Beef Steers
Alkane Controlled-release Capsules Feed Intake Beef Steers
2016/4/20
The objective of the study was to evaluate the use of n-alkanes to estimate DM intake and digestibility by beef cattle. Six steers were blocked (3 blocks, 2 animals/block) according to the body weight...
Composition and properties of solid alkanes extracted from a waxy petroleum fluids
Crude oil long residue alkanes thermal properties urea adduction flow behaviour
2010/8/11
Assam crude oil long residue (370oC+) is highly waxy/aromatic in nature associated with high pour point (51oC). The solid alkane components of this fraction extracted through urea adduction were analy...
Vapour Liquid Equilibrium in Asymmetric Mixtures of n-Alkanes with Ethane
Vapour liquid equilibrium Interaction parameters Asymmetric mixtures
2010/4/22
The paper presents a vapour liquid equilibria study in binary mixtures of n-alkanes with high dimensional asymmetry. Each mixture contains ethane and alkanes higher than eicosane. Calculations were do...
Reactions of Clay Volatiles with n-Alkanes
Alkane Catalysis Clay volatiles Gas chromatography Halloysite Kaolinite Mass spectrometry Montmorillonite Sepiolite
2012/1/6
Volatiles formed on heating clay minerals contain a variety of cations and anions and are highly reactive. Gas chromatograph-mass spectrometer analysis of long-chain n-alkanes exposed to such volatile...
Use of Long-Spacing Alcohols and Alkanes for Calibration of Long Spacings from Layer Silicates, Particularly Clay Minerals
Long-Spacing Alcohols Alkanes Calibration Long Spacings Layer Silicates Particularly Clay Minerals
2012/2/15
Lattice spacings of layer silicates, particularly clay minerals, may exceed 20 Å. The errors in measuring lattice spacings increase rapidly for spacings greater than about 10 Å and diffrac...