烷类

基本解释 (translations)

alkanes

与烷类相关的网络例句 [注：此内容来源于网络，仅供参考]

A novel method was proposed for the direct determination of biomarkers,such as n-alkanes,terpanes and steranes in crude oil by GC/MS coupling with backflush cutting technique and micro-fluidic splitter.

研究了一种反吹切割微流控装置气质联用技术直接分析原油中的正构烷烃类、萜烷类、甾烷类生物标志物的新分析方法。

Raney nickel catalyst was used in hydrogenation of the turpentine and c-pinane,t-pinane,camphene and isocamphane and some other monoterpane s were determined.

用雷尼镍为催化剂对松节油进行了加氢实验，获得顺蒎烷、反蒎烷、莰烷、异莰烷等单萜烷类化合物，采用气相色谱"反吹、微流控"技术的色谱-质谱分析方法，测得了它们的保留时间和质谱图，为进一步研究原油或抽提物轻馏分中单萜烷类化合物的地球化学意义提供了一些基础性数据。

The efficient first asymmetric syntheses of-6β-hydroxy-7αH-eudesm-4-en-3-one, and its C-6 epimer were achieved starting from-dihydrocarvone, whichprovide a novel and efficient synthetic method to 6-oxgenated eudesmanes.

以-二氢香芹酮为原料，经五步反应，首次完成了6β-羟基-4(5)-烯-3-羰基桉烷及其6位差向异构体的立体选择合成，并为C-6位含氧官能团取代桉烷类化合物的合成提供了一种简便有效的方法。

The results show that: 27 compounds were identified at 600℃, and most of them were alkenes, alkanes, acids, alcohols and phenolic substances; geraniol was identified, and its relative content was 3.6, which shows that geranyl 8-methoxycoumarin-3-carboxylic acid ester can release a certain amount of geraniol at smoke temperature; geranyl 8-methoxycoumarin-3-carboxylic acid ester can improve and modify the flavor, enhance the notes of sweet aroma and bean aroma, and reduce the biting taste of cigarette smoke.

结果表明，600℃时，8-甲氧基－香豆素－3-甲酸香叶酯的热解产物中共鉴定出27种成分，主要为烯类、烷类、酸类、醇类、酚类；鉴定出香叶醇，且相对峰面积3.6，说明8-甲氧基－香豆素－3-甲酸香叶酯能在卷烟燃吸温度下释放出一定量的香叶醇；8-甲氧基－香豆素－3-甲酸香叶酯具有改善和修饰卷烟香气，增加甜韵和豆香香韵，减轻刺激性的作用。

First, a series of liquid crystal polymers with different amounts of cholesterol mesogens and ferroelectric property are synthesized in this research. The structures of the compound synthesized are confirmed by IR and 1H-NMR spectroscopy. The thermal properties are characterized by DSC, POM. In this research, the 3-D molecular arrangement of molecular were measured by Polarization Modulation-Attenuated Total Reflection-Flourier Transform Infrared spectroscopy (PM-ATR-FTIR).

中文摘要本研究分成两个部分，第一部分为合成铁电性液晶及胆固醇液晶，以FTIR及 1H-NMR来鉴定化合物的结构，并以POM观察其液晶特有的光学纹路，用DSC来观察矽氧烷类液晶的液晶相的热转移温度并利用偏光-衰减全反射-傅立叶转换红外线光谱仪(Polarization Modulation-Attenuated Total Reflection – Flourier Transform Infrared)来探讨矽氧烷类液晶分子的三度空间排列。

Through chemical analysis, muskrat of excretive of the cell outside body is sweet as sweet as natural excretive muskrat all contain annulus seventeen alkyl ketone, muskiness ketone and cycloalkanes kind, ester kind, mellow kind with aldehyde kind wait for composition.

经过化学分析，体外细胞分泌的麝鼠香和自然分泌的麝鼠香均含有环十七烷酮、麝香酮以及环烷类、酯类、醇类和醛类等成分。

The thesis concerning about the total synthesis of some natural occurringlignans and neolignans consists of following five parts:I. Progress in the synthesis of some natural occurring neolignans A view of the synthesis of some natural occurring neolignans, especiallybenzofuraniod and bicyclo[3, 2, 1]octanoid neolignans was given. The syntheticmethods for this two kind of neolignans have been classified and discussed.Ⅱ.

本论文研究了一些木脂素和新木脂素类天然产物的全合成，共包括五部分内容：一、一些新木脂素类天然产物的合成进展对一些新木脂素类天然产物尤其是苯骈呋喃类和双环[3，2，1]辛烷类新木脂素的合成工作进行了较为全面的介绍，并对此类化合物的合成方法进行了分类和讨论。

III. Studies on the total synthesis of macrophllin type of bicyclo[3, 2, 1] octanoid neolignans ( C-4': endo ) The first total synthetic route of macrophllin type of bicyclo[3, 2, 1]octanoidneolignans ( C-4': endo ) was established based on the rearrangement ofbenzofuranoid and bicyclo[3, 2, 1]octanoid neolignans.

三、Macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成研究利用氢化苯骈呋喃类新木脂素和双环[3，2，1]辛烷类新木脂素的重排关系，首次建立了macrophllin型双环[3，2，1]辛烷类新木脂素(C-4'桥环为endo)的全合成路线。

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

The result shows that the greater positive influence is from the dissolutions of carotene and browning reaction,next come the cembratriendid compounds and hypoglycemia compounds,while the negative influence is from indoles,toluene and some aldehydes,and the negative influence from...

结果表明，对评吸结果影响较大的是胡萝卜素降解产物类和棕色化反应产物类；类西柏烷类和苯丙氨酸类中性致香物质的贡献较小；负面影响较大的成分主要集中在吲哚、甲苯及一些醛类上，类胡萝卜素降解产物类和棕色化反应产物类中的个别成分也有一定的负面影响。

与烷类相关的网络解释 [注：此内容来源于网络，仅供参考]

active oxygen：烷类代谢

锡氧簇:tin-oxygen cluster | 烷类代谢:Active Oxygen | 活性物种:Active oxygen species

pyridine alkaloid：吡啶类生物碱

10.017 双吡咯烷类生物碱 pyrrolizidine alkaloid | 10.018 吡啶类生物碱 pyridine alkaloid | 10.019 哌啶类生物碱 piperidine alkaloid

pyrrolidine alkaloid：吡咯烷生物碱类

pyrrolidine 吡咯烷 | pyrrolidine alkaloid 吡咯烷生物碱类 | pyrrolidone 吡咯烷酮

pyrrolidine alkaloid：吡咯烷类生物碱

10.014 苯基烷基胺类生物碱 phenylalkylamine alkaloid | 10.015 吡咯烷类生物碱 pyrrolidine alkaloid | 10.016 托烷类生物碱 tropane alkaloid

pyrrolidine alkaloids：吡咯烷生物碱类

pyrimidine 嘧啶 | pyrrolidine alkaloids 吡咯烷生物碱类 | radioactive pollution 放射性污染(公害)

carane：蒈烷

桉油精类有1,8桉叶素(1,8cineol)和1,4桉叶素(1,4cineol). 1.3双环单萜双环单萜类化合物在植物界分布很广,组成它们的基本碳架在15种以上,含笑属具有其中的5种基本骨架,分别是侧柏烷(thujane)、蒈烷(carane)

hexadecane：十六烷

结论:4种不同产地的零陵香药材均含有大量的酯类等芳香物质,均含有正十六烷(Hexadecane)、廿一烷(Heneicosane)和6,10,14-三甲基-2-十五烷酮(2-Pentadecanone,6,10,14-trimethyl-)等物质,但不同产地的药材成分有所区别,

alkanes：烷类

alkane 烷 | alkanes 烷类 | alkanet 由朱草根部提制的红色染料

Borane：硼烷

看作硼烷(borane)、硅烷(silane)或锡烷(stannane)等的衍生物单糖可以分为醛糖(aldose)和酮糖(ketose)两大类,含有醛基的单糖称为醛糖,含有酮基的单糖称为酮糖.

alkyl boranes：烷基硼[烷]类

"烷基苯","alkyl benzene" | "烷基硼[烷]类","alkyl boranes " | "溴[化]烷基","alkyl bromide"