选择性的
- 与 选择性的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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This research uses a selective attention processing mechanism with a positive and negative priming model to set the experiment requirement and to explore the target activation stimulus mechanism and the distracter inhibition mechanism to exploit differences in the groups.
本研究采用选择性注意加工机制上的正负启动范式,设定实验条件,探讨以目标激活的兴奋机制和分心物的抑制机制对聋哑生和正常生所存在的差异,进而探讨聋哑生在选择性注意加工机制上所存在的问题。
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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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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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The reaction of carbodiimide 14 with various neucleophiles was investigated. The selectivity of cyclization of the carbodiimide 14 with NH_3, RNH_2, R_2NH and NH_2NH_2 were studied, some of the gualidene-type intermediates were isolated and the possible mechanism was suggested.
探讨了碳二亚胺14与各种亲核试剂如NH_3、RNH_2、R_2NH以及水合肼的成环反应的选择性,并分离得到了部分胍中间体,提出了反应可能的机理,对反应的选择性进行了合理的解释。
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X6 3?,large specific surface area and adsorbent capacity However,most molecules and hydrated ions can not enter the aperture pass because of their size over the aperture diameter of palygorslote except less simple ones Furthermore,Palygorskite adsorbs water molecule choosingly In most cases the absorbing of palygorskite is by its outside surface that works in the form of colloid and ion exchange other than i...
但是由于凹凸棒石孔道直径小于大多数分子及水合离子的直径,除少数简单分子和离子外,多数分子和离子都不能进入凹凸棒石孔道,而且凹凸棒石选择性吸附水分子,因而在多数情况下,凹凸棒石对吸附质的吸附不是内表面吸附,而是外表面吸附。并且外表面吸附是胶体和离子交换吸附。本文阐述了凹凸棒石的孔道直径、吸附选择性、体系pH 值及凹凸棒石和蒙脱石胶体颗粒的互相作用对凹凸棒石吸附性能应用的制约。
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The flotation effect of BET was compared with that of the commonly used reagents GF and FS202. The result shows that although the usage of BET is only 1/10 and 1/100 of GF and FS202 respectively, the collectability and selectivity for pyrite and coal gangue is obviously better than that of using GF and FS202. In addition, it will not be influen...
结果表明:尽管 BET的用量分别是 GF,FS2 0 2用量的 1 /1 0和 1 /1 0 0 ,但对黄铁矿、煤矸石等捕收性和选择性明显优于 GF,FS2 0 2 ,且不受 p H条件的影响;与其它 3种同系物(AET,DET,HET)在脱硫降灰方面综合比较表明,BET的效果最好,具有用量少、选择性强等优点,是一种应用前景良好的煤炭浮选药剂。
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The analytical results have shown that p ro ducts mainly consisted of some monosubstituted, disubstituted and a few trisub stituted naphthalenes. Except the low activity of HZSM-5 catalyst, all other z eolite catalysts have higher activity. HY and Hβ catalytic activities were the highest, and their naphthalene conversions attained to 79.12 and 55.79 percent respectively, but their selectivities for 2-isopropylnaphthalene, 2,6-diisopropylnaphthalene(2,6-DIPN) and 2,7-diisopropylnaphthalene ( 2,7-DIPN) were too low. ZM catalysts had good activity and much better selecti vity, especially for ZM4-3, of which its 2,6-DIPN/2,7-DIPN ratio was 2.97. Th er efore, some zeolite catalysts are recommended for shape selective isopropylat ion of coal tar naphthalene.
研究结果表明,煤焦油萘异丙基化产物主要由一取代萘、二取代萘以及少量三取代萘组成;除HZSM-5活性较低以外,其它催化剂均有较高的反应活性,其中HY和Hβ反应活性最高,萘转化率分别达75.15%和55.96%,但β位产物的选择性较差;ZM类催化剂既有一定的活性,又有较高的β选择性,是萘择形异丙基化反应理想的备选催化剂。
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The DielsAlder reaction of myrcene and acrolein over ZnCl2/NaY prepared by solidstate interaction under microwave irradiation, conventional heating physical mixture, and over ZnNaY prepared by ion exchange in solution was studied.
比较了微波固相法、普通加热法和简单混合法制备的ZnCl2/NaY及溶液离子交换法制备的ZnNaY在月桂烯与丙烯醛DielsAlder反应中的催化性能,发现微波固相法制备的催化剂表现出最高的环加成选择性和区域选择性。
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Cu2-Co2-KBr with high catalytic activity and selectivity shows synergistic effect between metal ions.Under the reaction conditions of mCu(Ac2:mCo(Ac2:m= 0.1:0.5:0.1, n:n=0.14, glacial acetic acid as solvent, overdosage sodium percarbonate, 65℃, the conversion can reach 45.9% and the selectivity for p-methoxy benzaldhyde is about 68.3%.
结果表明,Cu2-Co2-KBr具有较高的催化活性和选择性,体现出金属离子之间的协同作用,对甲基苯甲醚在mCu(Ac2:mCo(Ac2:m=0.1:0.5:0.1,n:n=0.14,冰醋酸作溶剂,稍过量的过碳酸钠,65℃的条件下,转化率可达45.9%,生成对甲氧基苯甲醛的选择性为68.3%。
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The influences of conditions, such as the different elements in A site, reaction temperature and the reoxidation time etc.on partial catalytic oxidation of AFeO 3 catalyst are reviewed. The results show that the lattice oxygen from AFeO 3 pervoskite catalyst in A site occupied ...
结果表明,稀土金属(La ,Nd ,Sm ,Eu)占据A位的AFeO3钙钛矿型催化剂中的晶格氧适于甲烷选择性氧化制合成气,在完全氧化的LaFeO3催化剂上存在少量的强氧化性氧物种,通过控制再氧化条件,可使CH4 在LaFeO3催化剂的作用下,高转化率(~ 92 %)、高选择性(96 %)地生成合成气。
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。