选择性

Under the optimal conditions 1.5×10~(-3 mol/L of 22, 1.0 MPa of O_2, 120℃, 20 h, the conversion of ethylbenzene was 37.8%, and the selectivity for acetophenone and 1-phenylethynol was 82.5% and 13.5% respectively.

在22浓度为1.5×10~(-3)mol／L，氧气压力为1.0 MPa，120℃反应20 h，乙苯转化率为37.8％，苯乙酮的选择性为82.5％，1-苯基乙醇的选择性为13.5％，锰配合物23次之。

The energy of excited state depended on the nature of different cations. 3. 4-(4-tolyl)-6-phenyl-2, 2'-bipyridine platinum acetylide complex containing a monoazazcrown moiety in the acetylide ligand could signal Mg〓 specifically and displayed large changes both in color and in luminescence intensity upon complexation with Mg〓. The most striking result was that it could signal Mg〓 specifically even in the presence of alkali and alkaline earth metal ions in high concentrations.

对位带有氮杂-15-冠-5冠醚的苯乙炔为辅助配体的4-（4-甲基苯基）-6-苯基-2，2'-联吡啶Pt络合物AC，不仅在碱金属和碱土金属的存在下吸收光谱明显改变，更有意义的是，它只有在Mg〓离子存在时能够发光，因此可以通过发射光谱选择性的识别Mg〓，尤其可以在高浓度的其它金属离子存在下选择性的检出Mg〓离子。

Further increasing the Mo content results in the remarkable decrease of acrolein selectivity.

Mo含量进一步增加，催化剂的丙烯选择性增加而丙烯醛选择性下降。

The highest ee value of 71% was achieved by using chiral molybdenum 2'-pyridingyl alcoholate complex at 0 ℃. After addition of phase transfer catalyst Bu4NBr, the yield and ee value were remarkably increased.

其中手性吡啶醇二氧合钼在0℃下的对映选择性ee值达到71%；加入相转移催化剂四正丁基溴化铵，催化剂的活性和对映选择性有显著提高，其中手性吡啶醇二氧合钨在50℃下ee值由54％提高到78%。

Combining the performance evaluation (activity, selectivity and stability) and the characterization of the catalysts (XRD, TPD, FTIR and the pore structure measure), it can be concluded that :(1)The activity of modified β is higher than MCM-22, but the selectivity of ethylbenzene is lower about 3% than that of MCM-22;(2)The mounts of diethylbenzene and the other by-products are higher 1.7 times and 1.5 times than these of MCM-22 respectively;(3)The catalytic performance of zeolite mixture is nearly equal to modified β, but the selectivity of ethylbenzene is higher about 0.5% than that of modified β;(4)The catalytic activity of zeolite is mainly correlated with the number of acid sites, strength and distribution, and the distribution of products is determined by the binding energy of ethylbenzene and the pore structure, while the stability of catalyst is affected by the amount of poly-ring aromatic alkylate and the pore structure.

以性能评价和特性表征（XRD、TPD、FTIR和孔结构测定）相结合的方式，对上述三种催化剂性能比较的结果表明：（1）改性的活性明显高于MCM-22，但乙苯选择性却低于MCM-22绝对差约3%；（2）改性(上二乙苯和其他副产物的生成量分别约为MCM-22上对应值的1.7和1.5倍左右；（3）混合型催化剂的性能与改性相仿，但乙苯选择性提高0.5%左右；（4）对乙苯合成，沸石催化剂的活性主要取决于其B酸中心数、酸强度及酸分布，产物分布则取决于催化剂表面的乙苯脱附能垒值和孔道结构，而稠环芳烃的生成量和催化剂孔道结构是影响催化剂稳定性的主要因素。

This paper reviews the recent advances in synthesis of chiral allylic amines, mainly discussing the effects of ligands on chemo-and regio-selectivities.

综述了近年来手性烯丙基胺的合成进展，重点介绍了催化剂配体对化学选择性和对映选择性的影响，并阐述了各种类型的反应机理

We studied effects of additives in the allylic amination reaction. We found that4NF could improve the reactivity and enantioselectivity.

对于烯丙基胺化反应，我们研究了外加添加剂对对映选择性的影响，我们发现四丁基氟化铵的加入可以大大提高反应速度及对映选择性。

This study was aimed to examine the relationship between dendrites of direction-selective ganglion cell and processes of starburst amacrine cell in rabbit retina and to see how the dendritic interaction could contribute to the DS mechanism.

本实验的目的是研究家兔视网膜方向选择性神经节细胞的树突与星爆无长突细胞树突之间的关系以及这种树突间的相互作用在方向选择性产生机制中的贡献。

By 5ft/line of sight Extraordinary Abilities: Selective damage, 72 Secret Transformation, Monkey hairs Special Qualities: Instantaneous movement Saves: Fort+27, Ref+31, Will+21 Ablilities: Str29, Dex29, Con20, Int27, Wis8, Cha26 Skills: Balance+19, Bluff+35, Escape Artise+42, Hnadle Animal+19, Hide+35, Knowledge+24, Knowledge+24, Knowledge+24, Knowledge+24, Knowledge+24, Knowledge+24, Listen+34, Move Silently+37, Pick Pocket+30, Scry+28, Sense Motive+25, Spot+32, Tumble+42 Feats: Alterness, Ambidexterity, Blind-Fight, Combat Reflexes, Deflect Arrows, Dodge, Expertise, Improved Trip, Improved Two Weapon Fighting, Improved Unarmed Strike, Leadership, Mobility, Quick Draw, Spring Attack, Whirlwind Attack Climate/Terrain: Any land Organization: Unique Challenge Rating: No hope Treasure: Only magic Alignment: Chaotic netural Combat Selective Damage: Monkey's preferred weapon, the Iron Ballast Rod, once used to keep the oceans calm is immensely large and heavy.

翻译如下中体形魔法兽生命骰：20d10+100(210hp)优先权：总是先攻速度：瞬移，飞行瞬移 AC： 35(+9 敏捷，+4 天生，+12 凤凰甲)措手不及：26，接触：19 攻击：金箍棒+27/+22/+17/+12 近战，拳头+27/+22 近战伤害： 1d1000 金箍棒， 2d12+9 拳头面宽/触及： 5尺x5尺/视线以内特异能力：选择性伤害， 72变，毫毛特性：瞬间移动豁免：强韧+27，反射+31，意志+21 属性：力量29，敏捷29，体质20，智力27，感知8，魅力26 技能：平衡+19，唬骗+35，逃脱+42，驯养动物+19，躲藏+35，知识+24，知识+24，知识+24，知识+24，知识+24，知识+24，聆听+34，潜行+37，扒窃+30，探知+28，察言观色+25，侦察+32，滚翻+42 专长：警觉，双巧手，盲斗，战斗反射，拨挡箭矢，闪避，寓守于攻，精通拌摔，精通双武器攻击，精通徒手打击，领导力，灵活移动，即时备战，跳跃攻击，旋风攻击气候/地形：任何地面组织：唯一挑战级数：无望宝藏：只有魔法物品阵营：混乱中立战斗选择性伤害：猴子的首选武器——定海神针铁，曾一度被用于保持海洋的稳定——极其巨大与沉重。

The NH〓/CO〓=2in accordance with the constitutes of ammonium carbamate can not be separated by ordinary methods, The separation way which used the different absorption rates of high gas velocity between ammonia and carbon dioxide in aqueous solution has been made up in this study.

在实验室高速喷射鼓泡反应器的条件下，研究了M〓/M〓=2的混合气体在水溶液中的选择性吸收过程，获得了良好的选择性效果：连续吸收的选择性因子S〓在2.06～8.23之间，S〓在2.86～10.83之间。

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。

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。