查询词典 F region

Then the coefficients of entrance region effect and the relations between them, and the flowbehaviour index n can be obtained by solving the energy integral equation. Under the assumption of the velocity distribution within boundary layer: f = 1-(1-η)n+1/n for example, co...

以边界层内幂律流体层流速度分布假设f=(1一η)~(n+1/n为特例，所求出的结果与文献[4]中的理论值和实验值比较表明，本文的计算是既简便又可靠的。

A saturation tendency of current density was found in high electric field region, it could not be explained by modified F-N model.

但是利用修改的F-N模型，不能解释高电场区域的电流密度的饱和现象，这将有待于进一步研究。

Yellow-throated marten\'s relationship is between Stone marten and Fisher marten.Fisher marten is the first species who was divided from Martes.The second one were Yellow-throated marten and Stone marten.Based on the analysis of the fossil note,Martes came from Central Europe,Fisher marten,Yellow-throated marten and Stone marten belonged to a branch which evolved to temperate zone.Boreal forest martens was another branch which evolved to cold environment.It is suggested that Yellow-throated marten and Fisher martenwere ascertained genus separately.4、By contrasting and analyzing 11 complete mitochondrial control region gene sequences of Mustelidae,the extended termination associated sequence domain、the central domain and the conserved sequence block domain were identified.A extended termination associated sequence(ETAS1) and eight conserved sequence(CSB-F、E、D、C、B、1、2、3) was indicated,and sequence mode was presented.Different kind of short repeat sequences were found between CSB1 and CSB2.With wolf as the outgroup,the phylogenetic evolution relationship of Mustelidae was analyzed using the neighbor-joining method.

而基于鼬亚科动物线粒体DNA12种重链编码蛋白基因序列及石貂和渔貂线粒体ND2和cyt b全序列，以狼、狗獾和水獭为外类群，应用NJ、MP和ML法构分别构建貂属和貂熊的系统进化树，结果表明：紫貂与日本貂亲缘关系较美洲貂近，石貂与真貂亚属亲缘关系较近，黄喉貂介于石貂和渔貂之间；渔貂是最早从貂属分化出的种类，其次是黄喉貂和石貂；结合化石记录分析，貂属起源于中欧地区，渔貂、黄喉貂和石貂属于一个向温带进化的分支，而真貂亚属为另外一个向寒冷环境进化的分支，建议将黄喉貂和渔貂分别定为单独的属。4、比对并分析11种鼬科动物线粒体DNA控制区序列，识别出延长终止序列区、中央区和保守序列区3个区域，指出了一个终止相关序列ETAS1及8个保守序列(CSB-F、E、D、C、B、1、2和3)，并给出了序列通式，在CSB1和CSB2之间发现具有不同形式的短串联重复序列。

These chemical shifts in the aromatic region of the resulting nucleophilic adduct 2-F were consistent with the counterparts of 9,10-dihydro-9-methoxy-9-(4-methoxyphenyl)-10-methylacridine, 17b which was proven to be the adduct of the 9-phenyl acridinium salt formed with an excess of MeOH (Figure S7 in Supporting Information).

在最终的亲核加成化合物2-F的芳香族区中的这些化学位移与9，10二氢-9-甲氧基-9-(4甲氧基苯基)-10-甲基吖啶的对应物是一致的，17b 这被证明是与过量的MeOH形成的9-苯基吖啶盐的加成化合物（支持信息中的图S7）。

And (20. 5 ± 1.7) ml· 100 g-1 ·min-1, respectively. When compared in 3 groups, the temporal and parietal lobe rCBF had a decreasing tendency in aMCI group, while in VCI-ND group, the most dominant decreasing parts were mainly concentrated in white matter region (17. 7±2. 3 ml·100 g-1·min-1, F = 5. 740, P = 0. 002. Whatever the depth or the width was, beth periventricular and subeortical deep white matter, anterior and posterior ventricular regions were all involved. There are no dominant difference of rCBF in caudate nucleus, lentiform nucleus and thalamus.

2NC组、aMCI组和VCI-ND组患者的rCBF表现比较：aMCI组颞、顶、枕叶的rCBF值呈一定趋势的减少，VCI-ND组额叶的rCBF值呈一定趋势的减少，而VCI-ND组rCBF下降最明显的部位集中在白质区域[(17.7±2.3)ml·100 g-1·min-1，F=5.740，P=0.002]，从深度看覆盖了脑室旁白质和皮质下深部白质两部分，从长度看覆盖了白质的前后区域。3组基底节区核团包括尾状核、豆状核和丘脑的rCBF值比较差异无统计学意义。

We used direct PCR to isolate the rps7Ⅵintron region hosting the f copy of U17 snoRNA coding sequence from 49 fishes, which include 42 ostariophysan species plus 7 outgroup species.

我们测定了49种鱼类、67条rpS7 intron6序列，得到U17 snoRNA f copy，共计55个单倍型，包括42种骨鳔鱼类，7种外类群。

The main functional region of the F gene including 535 nucleotides was amplified by RT-PCR and sequenced.

运用RT—PCR扩增了该分离株F基因的重要功能片段（约535kb），并进行了序列测定。

Results A Tru9 I restriction fragment length polymorphism in the 5′ flanking region of the FⅨ gene was first identified in Guangxi.

结果 首次在广西人群中发现FⅨ基因5′侧翼698位核苷酸存在Tru9 I多态性，该多态性由83 bp/58 bp+25 bp组成，二者的基因频率在受检的180个FⅨ基因中，分别为0.622和0.378，女性杂合子频率为0.473。

Results showed that among 18 sampling sites, 3 sites were not polluted yet, 11 slightly polluted, and 4 moderately polluted, and that main pollutants in the region were F, Cl, Pb, Cd, As and DDT.

土壤面源污染水、土综合评价结果表明：18个样点中有3个为无污染，11个为轻度污染，4个为中度污染。点源污染土壤综合评价结果表明：该区主要污染物为F、Cl、Pb、Cd、As及DDT。

The fragment of F gene covering cleavage site region was amplified by RT-PCR, cloned and compared. Basing on published sequences of representative NDV strains, a phylogenetic tree was constructed to analyse their variation relation.

第二部分：NDV Sddy-02株F基因的克隆与序列分析本试验设计了一对特异性引物，应用RT-PCR技术扩增出NDV Sddy-02株F基因含裂解位点区363bp片段，同时进行克隆和序列测定分析。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。