搜索结果: 1-15 共查到“化学 COMPOSITION”相关记录17条 . 查询时间(0.23 秒)
Supported Membrane Composition Analysis by Secondary Ion Mass Spectrometry with High Lateral Resolution
cryosolvents sugar glass glycerol water trytophan indole IR flourescence phosphorescence
font style='font-size:12px;'>
2016/5/24
The lateral organization of lipid components within membranes is usually investigated with fluorescence microscopy, which, though highly sensitive, introduces bulky fluorophores that might alter the b...
Microbial biomass and community composition in boreal lake sediments
boreal lake sediments Microbial biomas
font style='font-size:12px;'>
2014/4/4
We used phospholipid fatty acids (PLFA) to determine microbial biomass and community structure in the
sediments of eight boreal lakes with different loadings of allochthonous organic carbon and total...
Chemical composition and antimicrobial activity of the essential oils of mosses (Tortula muralis Hedw., Homalothecium lutescens (Hedw.) H. Rob., Hypnum cupressiforme Hedw., and Pohlia nutans (Hedw.) Lindb.) from Turkey
Tortula muralis Homalothecium lutescens Hypnum cupressiforme
font style='font-size:12px;'>
2010/12/3
The essential oils of mosses [Tortula muralis Hedw. (Pottiaceae), Homalothecium lutescens (Hedw.) H. Rob. (Brachytheciaceae), Hypnum cupressiforme Hedw. (Hypnaceae), and Pohlia nutans (Hedw.) Lindb. (...
Chemical composition and antimicrobial activity of the essential oils of Mosses (Tortula muralis Hedw., Homalothecium lutescens (Hedw.) H. Rob., Hypnum cupressiforme Hedw., Pohlia nutans (Hedw.) Lindb.) from Turkey
Tortula muralis Homalothecium lutescens Hypnum cupressiforme
font style='font-size:12px;'>
2010/10/19
The essential oils of mosses [Tortula muralis Hedw. (Pottiaceae), Homalothecium lutescens (Hedw.) H. Rob. (Brachytheciaceae), Hypnum cupressiforme Hedw. (Hypnaceae), and Pohlia nutans (Hedw.) Lindb. (...
Composition of the essential oils of Pinus nigra Arnold from Turkey
Pinus nigra Pinaceae essential oil
font style='font-size:12px;'>
2010/10/15
Essential oil composition of the needles of Pinus nigra Arnold collected from different localities in Turkey was investigated by GC and GC/MS. The main components in the oils were a-pinene, b-pinene, ...
Determination of Surface Composition by X-ray Photoelectron Spectroscopy Taking into Account Elastic Photoelectron Collisions
Surface Composition X-ray Photoelectron Spectroscopy Taking into Account Elastic Photoelectron Collisions
font style='font-size:12px;'>
2010/9/17
It is now well known that elastic photoelectron scattering in the surface region of solids cannot be ignored in the mathematical formalism of quantitative XPS. Elastic collisions may increase or decre...
Iridium concentration and noble gas composition of Cretaceous-Tertiary boundary clay from Stevns Klint, Denmark
K-T boundary, iridium, noble gas
font style='font-size:12px;'>
2017/8/10
The Cretaceous-Tertiary (K-T) boundary about 65 million years ago records a mass extinction event caused by a bolide impact. K-T boundary clay collected from Stevns Klint, Denmark was investigated in ...
Characterization and Electrochemical Study of Nano-Composition Based Methylene Blue- and Riboflavin-Nafion on the Surface of Gold Electrode
Riboflavin methylene blue Nafion electrode characterization nanoparticles
font style='font-size:12px;'>
2010/4/9
A functional membrane, composed of the nanoparticles of methylene blue (MB) and Nafion, was constructed during the present study. The materials were characterized by the methods of scanning electron m...
Fatty Acid Composition of Tobacco Seed Oil and Synthesis of Alkyd Resin
tobacco oil alkyd fatty acid linoleic acid gloss and adhesion
font style='font-size:12px;'>
2007/12/19
摘要 The fatty acid composition of tobacco seed oil revealed that the oil is rich in unsaturated fatty acids, having linoleic acid (71.63%), oleic acid (13.46%) and palmitic acid (8.72%) as the most abu...
Composition and Antimicrobial Activities of Volatile Components of Minuartia meyeri
Minuartia meyeri Caryophyllaceae Essential oil Antimicrobial activity GC-MS
font style='font-size:12px;'>
2010/4/19
The essential oil of air-dried Minuartia meyeri (Boiss.) Bornm. (Caryophyllaceae) was obtained by hydrodistillation in a Clevenger-type apparatus and analyzed by GC-MS. Fifty-two components were ident...
二元类水滑石层板组成、结构与性能的理论研究（Theoretical Studies on Layer Composition, Structure and Properties of Hydrotalcite)
类水滑石 静电势能模型 热稳定性
font style='font-size:12px;'>
2010/8/24
采用晶体学理论建立二元类水滑石(LDHs)微观结构模型与静电势能模型，将层板金属离子间距、层板电荷密度、层间阴离子间距等微观结构参数定量化，并将层间阴离子的静电势能表示成层板金属离子半径和物质的量之比、插层阴离子尺寸和电荷的函数。研究结果表明：LDHs层板金属离子间距应用离子紧密堆积来估算和孔径按阴离子平面六方点阵分布来计算是可行的；调变层板金属离子种类与物质的量之比影响层间阴离子的稳定性，势能计...
Analysis of the Essential Oil Composition of Sideritis albiflora Using Direct Thermal Desorption and Headspace GC-MS Techniques
Thermal desorption headspace GC/MS essential oil Sideritis albiflora Hub.-Mor
font style='font-size:12px;'>
2010/4/20
The main constituents of Sideritis albiflora were found to be trans-caryophyllene, a-pinene, b-pinene, g-cadinene, pulegone, and caryophyllene oxide by both thermal desorption GC/MS and headspace GC/M...
The Composition of Fatty Acids in Hypericum scabrum, H. scabroides and H. amblysepalum
Hypericum scabrum H. scabroides H. amblysepalum fatty acids gas chromatography
font style='font-size:12px;'>
2010/4/21
The chemical composition of the fatty acid methyl esters (FAMEs) of flowering tops of Hypericum scabrum, H. scabroides and H. amblysepalum were identified by gas chromatography. In this work 5 FAMEs f...
A Study on the Fatty Acid Composition of Fish Liver Oil from Two Marine Fish, Eusphyra blochii and Carcharhinus bleekeri
Marine fish liver oil Eusphyra blochii Carcharhinus bleekeri Fatty acid composition TLC-GLC
font style='font-size:12px;'>
2010/4/21
Two species of shark found in the coastal waters Karachi (Pakistan) were studied, Eusphyra blochii (winghead snark) and Carcharhinus bleekeri (sandbar shark) for their liver oil fatty acid composition...
Determination of Fatty Acid Composition and Total Trans Fatty Acids in Cereal-Based Turkish Foods
Capillary gas-liquid chromatography cereal foods fatty acid composition trans fatty acids
font style='font-size:12px;'>
2010/4/22
The fatty acid composition and trans fatty acids of 13 cereal-based foods produced by Turkish companies were analysed by capillary gas-liquid chromatography. The total fat contents of the samples rang...