正链

词组短语

normal chain · plus strand

与正链相关的网络例句 [注：此内容来源于网络，仅供参考]

In this paper, acetanilide used as start material was chlorosulfonated, then reacted with alkylamines with different length of carbon chain to prepare 4 p-acetylaminophenylsulfonylalkylamine.

本文以乙酰苯胺为起始原料，经氯磺化后分别和不同碳链的正烷基胺反应制得4种不同碳链长度的对乙酰氨基苯磺酰烷基胺，将其水解后制得了对氨基苯磺酰正丁胺、对氨基苯磺酰正辛胺、对氨基苯磺酰正十二胺和对氨基苯磺酰正十八胺。

Hypoviruses are a group of unencapsidated, cytoplsmically self-replicating plus sense RNA viruses found in the chestnut blight fungus Cryphonectria parasitica.

低毒病毒是一类存在于板栗疫病菌细胞质中自主复制的无衣壳正链RNA病毒。

Now we have known that SARS-CoV encoded 11 varietal proteins. They have 4 constitutive proteins: spike protein, membrane protein, envelope protein and nucleocapsid protein. Spike protein trimer form spike and exsertion? virus peplos on the surface. Spike protein is archi-surface antigen component of virus, it has acceptor binding and membrane fusion activity. Spike protein has important effect at tissue tropism, cell-fusion and toxicity. Nucleocapsid protein can bind genome RNA to shape neucleocapsid. Membrane protein and envelope protein are necessary constituent to shape virus peplos. Spike protein is I-type membrane glycoprotein, it mediate virus binding with host cell epimembranal acceptor and to fuse host cell membrane.

SARS-CoV属于巢状病毒目、冠状病毒科，为单正链RNA病毒，基因组全长约29.7kb，已知编码11种蛋白，其中包括4种结构蛋白，分别是刺突蛋白、包膜蛋白、小包膜蛋白和核蛋白或核壳体蛋白。S蛋白三聚体形成突起，伸出包膜表面。S蛋白是病毒的主要表面抗原成分，具有受体结合和膜融合活性，在组织嗜性、细胞融合和毒力等方面起重要作用。N蛋白与基因组RNA结合形成核衣壳。M蛋白和E蛋白是包膜形成所必需的成分。

The study has shown:(1) With increasing sediment depth and the woody giblets, the total organic carbon, the extraction of benzene , the total humic acids and the unhydrolyte are enhanced, while the hydrolyte is decreasing.(2) According to the GC-MS analysis, n-alkane,n-alkan-2-ones and n-alkanones are composed mainly of long-chains,such a result is thought to be characteristic of a herbaceous input from 2300a.B.P. n-alkanones exist in the samples may be considered as the evidence of microorganisms activity.(3) It is showed that the lipids is more sensitive to the climate change than the floristic. The proxy of the pollen spore of the peat stratum is different from the normal environment proxy. It is one of the main reasons that the sensitivity difference of the bog vegetation reacting to the climate isn't accordant with the log of the fat molecule fossil and biology fossil.(4) The transformation of the peat organic carbon is under the influence of temperature,acidity,organic material constituting, etc, and it showed the up-trend with the depth. In the short-term scale, the conversion of the peat organic carbon is effected by seasonal water,regional climate and vegetations; while in the long-term scale, it is controlled mainly by the climate.(5) According to the comparing the orderliness of organic compound,vegetation giblets with the depth to the characteristics of the peat molecule fossil with the section, in the development of this peatmire, 1500a B.P（210cm）is regard as the borderline of the late Holocene, the keynote of the front period is warm with several cold fluctuations, and the trend of the back period is dry and cold although there were several fluctuations.

研究表明：（1）随深度的增高及植物残体中木本残体的增多，总有机碳、苯萃取物、总腐植酸、不被水解物含量逐渐增高，而易水解物含量减少；（2）GC- MS分析显示，正构烷烃，直链烷基2-酮和正烷醇均以长链组分为主，揭示了该泥炭柱剖面2347a.B.P的母源输入以草本植物为主；甲基酮类和短链正烷醇的存在是微生物活性很大的生物证据；（3）通过有机分子标志物与孢粉、植物残体等指标的对比研究表明：脂类化合物对气候变化的反映要比植物种灵敏得多，不同沼泽植物对气候变化的敏感性的差异是脂类分子化石记录与生物大化石结果很难一致的主要原因之一；（4）泥炭有机碳的转化受到温度、酸度、有机物质组成等很多因素的影响，短时间尺度，泥炭有机碳的转化受季节性降水、地方气候和植被等因素的影响；长时间尺度，泥炭地有机碳的转化，受气候条件控制；（5）总结泥炭分子化石特征、泥炭有机质各组分含量及植物残体组成随深度的变异规律，分析结果显示该泥炭地层形成过程中，1500a B.P（210cm）可作为划分前后晚全新世的界线，前期的基调是气候偏暖，但又有几次偏干冷气候的反复，后期气候以干冷为主，其间虽有几次上升波动，但整体趋势不变。

In addition nC〓, nC〓, two isomers of C〓 sterene and three isomers of C〓 isoprenoid hydrocarbons were also identified from aliphatic fraction of pyrolyzed product at 200℃. After pyrolyzed at 300℃, the main aliphatic hydrocarbons were normal alkanes ranged from C〓 to C〓, with C〓 as the main peak and C〓 as the second main peak. Meanwhile, pristane, phytane and C〓 sterane were also detected. In the pyrolysates at 400℃ and 500℃, the content of saturated hydrocarbons decreased, the range of normal alkanes distribution became narrow and the main peak was nC〓. Low concentration of C〓-C〓 steranes was detected and the content of C〓-C〓 increased more.

在200℃热模拟产物饱和烃馏分中除检测出两种长链烯烃外，还检测到正十九碳单烯烃、正三十五碳双烯烃、两个碳二十八甾烯的同分异构体和三个C〓类异戊二烯烷烃化合物同分异构体。300℃模拟产物饱和烃主要为正烷烃，正烷烃的碳数分布范围为C〓-C〓，以C〓为主峰、C〓为次主峰；另外，样品中还检出姥鲛烷、植烷和C〓甾烷等化合物。400和500℃热模拟产物中的饱和烃含量下降，正烷烃系列碳数分布范围变窄，主峰碳后移至C〓，检测到低浓度的C〓-C〓甾烷系列化合物，另外，C〓-C〓藿烷系列化合物含量进一步增加。

Porcine reproductive and respiratory syndrome virus, the causative agent of PRRS, is a small-enveloped virus containing a single positive-stranded RNA genome. And the virus is genetically, antigenically, and pathogenically heterogenic.

猪繁殖与呼吸综合征病毒是有囊膜的单股正链RNA病毒，依据基因序列分析，将PRRSV划分为两种基因型，即以LV株为代表的欧洲型和以VR2332株为代表的北美洲型。

A chimeric primer was designated in which segment A near 3' end is complementary to HB plus strand just before the DR2 region gap, and segment B near 5' end is consensus to part of the human immunodefficient irus genomic sequence, without homogenetic relationship to HB genome.

设计一嵌合引物，使之3'端的A片断与HB正链互补，并恰好位于DR2缺口之前；5'端的B片断与人类免疫缺陷病毒的基因序列具有同源性，与乙型肝炎病毒的基因组无同源性。

To address this issue, we investigated the RNA synthesis in vitro from RNA templates corresponding to the 3\' terminuses of HCV positive- and negative-strand RNA by a purified HCV NS5B.

本论文利用纯化的HCV NS5B蛋白以及HCV正链、负链3'末端RNA，在体外条件下研究NS5B利用两种模板进行RNA合成的情况，以探讨HCV基因组模板选择性的机制。

Poly tails exist in the genomes of many positive single-strand RNA viruses and plays an important role in viral infectivity.

大部分单股正链RNA病毒的基因组末端含有poly尾，这对病毒基因组RNA的感染性起着非常重要的作用。

You can also regularly schedule validation tests on your site to keep it in top working condition and keep up with any changes or deprecations of the

检查你的可链接性：因特网上有许多的''链接流行度''工具，可以查看谁正链接到了你的站点。这是搜索引擎用来给你的站点排名的迷之一。

与正链相关的网络解释 [注：此内容来源于网络，仅供参考]

positive cochain complex：正上链复形

positive charge 正电荷 | positive cochain complex 正上链复形 | positive column 正电柱,阳极区

normal chain：正链

normal annual runoff 正常年径量 | normal chain 正链 | normal curve 正常曲线

normal chain：正规链,正链,直链

normal cement 普通水泥 | normal chain 正规链,正链,直链 | normal charge 标准装药,正常装药

normal carbon chain：正碳链

normal calomel electrode 当量甘汞电极 | normal carbon chain 正碳链 | normal chain 正链

normal octane：正辛烷

normal hexane 正己烷 | normal octane 正辛烷 | normal paraffin 正链烷

Chain on the beam：锚链在正横

chain of stations 台链 | Chain on the beam! 锚链在正横! | Chain on the bow! 锚链在首舷方向!

normal pentane：正戊烷

normal paraffin 正链烷烃 | normal pentane 正戊烷 | normal photography 标准摄影术

regular Markov chain：正则马可夫链

正则可分组不完全区集设计 regular group divisible incomplete block designs | 正则马可夫链 regular Markov chain | 正则马可夫更新过程 regular Markov renewal process

Spurling pipe：锚链管锚链管

spurling pipe 锚链管 | spurling pipe 锚链管锚链管 | spurn gear 正齿轮

short-pitch transmission precision roller chains and bush chains：传动用滚子链及套筒滚柱链

b1406 正齿轮及斜齿轮测量方法 methods of measurement... | b1407 传动用滚子链及套筒滚柱链 short-pitch transmission precision roller chains and bush chains | b1408 滚柱链用链轮齿 sprocket tooth form for t...