选择性
- 与 选择性 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Impacts of selective logging on Nymphalid butterflies in primary forest and forest selectively logged 15 years previously in Sabah.
在此次研究中,我们在沙巴洲的原始森林和15前年被选择性砍伐过的森林中使用以水果为诱饵的装置来研究选择性砍伐对蛱蝶的影响,从而研究冠层取样的重要性。
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The selectivity of light isoparaffin was improved obviously, but with the increase of the olefin's selectivity.
在合成产物中,短链异构烷烃的选择性被显著提高,同时也伴随烯烃产物选择性的提升。
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Increasing the conversion of olefin,promoting the cracking reaction and...
提高烯烃的选择性转化、促进裂化反应并提高丙烯产物的选择性,有利于提高丙烯产率。
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The C2 selectivity over p-type semiconductor membranes is higher than that over n-type semiconductor membranes and the order of C2 selectivity is consistent with that over p-type semiconductor membranes.
但p型半导体膜上的C2烃选择性比n型半导体膜上的要高;p型半导体膜上C2烃选择性与其电导率大小顺序相一致。
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This thesis discussed three kinds of major technologies to reduce high PAR on the basis of the principle of OFDM system: pre-distortion technology techniques (clipping and filtering, peak windowing and companding technique), code techniques (Reed-Muller coding algorithm of Golay complementary sequence), and scrambling techniques (selected mapping, partial transmit sequence and selective scrambling), these techniques have some certain limitations.
本文在介绍OFDM理论的基础上,专题讨论了抑制高峰值平均功率比的三类主流技术:信号预畸变技术(限幅滤波、窗函数和压扩技术)、信号编码技术(Golay互补序列的Reed-Muller编译码算法)和信号扰码技术(选择性映射技术、部分传输序列技术和选择性扰码)。
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It has been demonstrated that TAK-147 is more potent and brain-specific AChE inhibition than tacrine and physostigmine, and has been approval potentiating choline acetyltransferase activity in cultured rat septal neurons more potent than donepezil, tacrine and revastigmine.
TAK-147 { 3-[l一(phenylmethyl(-4-piperidinyl]-l一门,3,4,5-tetrahydro-IH-l-be.azepln-8-yi(-l-propanone umarate }是日本最近研制的一个选择性胆碱酯酶抑制剂。TAK-147与毒扁豆碱和他克林相比是具有更强作用和中枢选择性的胆碱酯酶抑制剂。
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The Pictet-Spengler reaction of D-tryptophan methyl ester hydrochloride II-42 with piperonal II-34 in various solvents was extensively studied. The best stereoselectivity (cis/trans=99:1) was obtained using nitromethane or acetonitrile as the solvent.
我们研究了在不同溶剂中,D-色氨酸甲酯盐酸盐II-42和胡椒醛II-34发生的Pictet-Spengler反应的立体选择性,发现当分别用硝基甲烷和乙腈做溶剂时反应的立体选择性达到最高, cis:trans的比例为99: 1。
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In the current study, a series of cationic α-helical peptides of 20 a.a. were designed and synthesized based on four structural parameters, including charge, polar angle, hydrophobicity, and hydrophobic moment. Several methods were performed to describe the influence of these parameters on the antimicrobial and hemolytic activity, and on the permeabilizing effect on model membranes. The potential of these parameters to increase the antibacterial activity and to improve the prokaryotic selectivity is assessed.
本实验利用自行设计合成的人工抗菌胜肽当模型,固定长度为 20 个胺基酸,改变其电荷、极性角度、疏水性及疏水性矩等四种结构特性,并利用其对各种不同病原菌之抗菌活性及对兔子红血球细胞的溶血活性来研究其结构特性的改变对其抗菌活性、选择性及微脂体膜的渗透性之影响,以期望改变结构参数能增加抗菌活性及对原核的选择性。
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For a peptide to act as part of the host defense system or to be of pharmaceutical interest, high antimicrobial activity must be combined by low hemolytic activity. Our results indicated that the antimicrobial activity increased with increasing charge and polar angle, with charge of +4 and polar angle of 140° exhibiting the highest antibacterial and membrane permeabilizing activity. Higher hydrophobicity and hydrophobic moment correlated with increased hemolytic activity, thus decreasing selectivity dramatically.
胜肽要扮演宿主免疫机制的一部分或要成为新型态的抗生素不仅要有强大的抗菌活性还需要有高度的选择性,由本实验的结果发现,当抗菌胜肽的正电荷及极性角度增加时,胜肽之抗菌活性会随之增加,当抗菌胜肽的电荷为+4而极性角度为 140°时,胜肽有最强之抗菌能力及膜渗透活性;而随著胜肽疏水性以及疏水性矩的增加,会增加溶血活性,结果反而降低了抗菌胜肽的选择性。
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The selective embolization of artery and glandular-cavernosal shunt are effective ways to treat high-flow and low-flow priapism respectively.
阴茎海绵体穿刺抽血行血气分析、海绵体彩色多普勒检查及选择性血管造影对阴茎异常勃起有诊断价值,选择性动脉栓塞和阴茎头分流术是治疗高血流量和低血流量异常勃起的可靠方法。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?