Application of Large Bore and Thick Liquid Film Column to Analysis of Normal Paraffin Hydrocarbons 大口径厚液膜开管柱用于原油中正烷烃的分析
Real components method is proposed recently, but most using normal paraffin. 近年来,研究者们提出了真组分法,但大多采用正构烷烃来描述。
The quantitative relation between the surface tension and the number of carbon atoms of normal paraffin hydrocarbons at different temperature are studied systematically in this paper. 不同温度下,正链烷烃的表面张力与碳原子数间定量关系可表示为:由该式计算的结果与文献值吻合,并分析讨论了式中各系数的物理意义。
Tissue, Section, Matched Pairs, Human Primary Tumor and Normal, Lung ( Paraffin) 组织,切片,配对,人原发性肿瘤和正常组织,肺(石蜡切片)
The peak of fine component except for the peak of normal paraffin hydrocarbons is usually called fingerprint peak of gas chromatogram in gas chromatogram. 通常将气相色谱图上除正构烷烃峰以外的精细组分峰称作气相色谱指纹峰。
The investigation of the structures of reproductive organs, megasporogenesis, microsporogenesis and the development of male and female gametophyte in Dendrocalamus sinicus are made using normal paraffin method in this article. 通过石蜡切片的方法对巨龙竹生殖器官结构、大小孢子的发生和雌、雄配子体的发育过程进行了观察研究。
The carbon number distribution of normal paraffin in alkane is C_ 20& C_ 38. Cycloparaffinic hydrocarbon in alkane is less than the detection limit of NMR, and the total ion chromatogram of cycloparaffinic hydrocarbon shows that the content of alkane in cycloparaffinic hydrocarbon is very little. 链烷烃中正构烷烃的碳数分布为C20&C38,其中环烷烃的含量低于NMR的检测限,环烷烃的总离子流色谱图显示出其中的链烷烃含量很低。
The raffinate oil without normal paraffins could be used as quality feedstock of catalytic reforming process or blending component for high-octane clean gasoline. The desorption oil with the normal paraffin content above 98.2% was used as quality feedstock of ethylene pyrolysis process. 不含正构烷烃的吸余油作为优质催化重整原料或高辛烷值清洁汽油的调和组分,正构烷烃质量百分数大于98.2%的脱附油作为乙烯裂解原料。
Effect of Normal Paraffin Content on Ethylene Yield and Feedstock Allocation of Ethylene Pyrolysis Process 正构烷烃含量对裂解烯烃收率的影响及乙烯裂解的原料调配
Quantitative Relation between the Surface Tension and the Number of Carbon Atoms of Normal Paraffin Hydrocarbons 正链烷烃的表面张力与碳原子数之间的定量关系
Recent Development of Normal Paraffin Adsorption-Separation Technology 正构烷烃吸附分离技术进展
Calculation of pVT for the liquid normal paraffin 液态正烷烃pVT关系的计算
10% formalin fixation was performed on 14 samples of pig kidney containing sulfonamide crystal. Normal paraffin section technique was used for pigmentation and those sample kidneys were observed in pathology. 对14例含有磺胺结晶的猪肾脏用10%中性福尔马林固定,常规石蜡切片技术切片染色,对肾脏进行组织病理学观察。
For inorganic oil, mostly applying Pb, Sr, Nd isotopes and heavy-metal elements, lithophile elements and the structure of normal paraffin indirectly prove the possible existence of deep source of crude oil. 而对无机成因油多从铅、锶、钕同位素和重金属元素、亲石元素、正烷烃结构等旁证了原油地球深部来源的可能性。
Study on the distorted peak of normal paraffin with internal standard analysis by gas chromatography 气相色谱内标物正构烷烃畸峰的研究二氧化碳在直链烷烃中溶解度的理论计算
Effect of normal paraffin content on the yield of ethylene, propylene and butadiene was studied and the correlation equation was gained. 考察了不同正构烷烃含量的裂解原料对乙烯、丙烯和丁二烯收率的影响,得出乙烯、丙烯和丁二烯收率与原料中正构烷烃含量的关联式。
The trait, the level, the techno-economics and the development of vapor phase and liquid phase technology from different feedstocks for normal paraffin adsorption separation are particularly described in the article. 评述了为获得不同产品,以不同馏分油为原料的气相、液相正构烷烃吸附分离工艺的特点、技术水平、技术经济指标及其发展状况;
It is found that the Precambrian crude is of some special features besides natures of phanerobiotic crude, that is, it contains abundant~ ( 12) C light isotope, and in its aliphatic composition dominates normal paraffin hydrocarbons. 现已查明,前寒武纪原油除了具有显生宙原油的许多特点外,还具有一些特殊的特性。所研究的前寒武纪原油富含~(12)C轻质同位素。
The secondary amine derivatives can improve the low temperature properties of diesel, lowering its cloud point and cold filter plugging point, mainly through increasing the solution of long chain normal paraffin in diesel. 结果表明,仲胺衍生物主要是通过增溶柴油中的长链正构烷烃,使浊点、冷滤点降低,从而改善柴油低温性能。
Using the method of normal paraffin sectioning, the leaf structures of apple cultivars Telamon ( columnar), Spur Fuji ( spur-type), Fuji ( common type) and hybrids derived from Spur-Fuji × Telamon with different phenotype in tree form were compared. 利用常规的石蜡切片法,对苹果品种舞姿(柱型)、短枝富士、普通富士以及舞姿×短枝富士的实生后代的叶片结构进行解剖比较研究。
The normal paraffin contents were more than 39. 2% by urea adduction method. 用氢核磁共振测得其支化度均小于0.106,用尿素络合法测得正构烷烃含量均大于39.2%。
The isomerization of long-chain normal paraffin is the key process for improving the low-temperature fluidity of diesel and lube base oil. 长链正构烷烃的异构化是改善柴油及润滑油基础油低温流动性的关键技术。