锌

Taking zinc oxide and phosphoric acid as raw materials and silane coupling agent as modified agent,the micro-size zinc phosphate is prepared by wet-process mechanicochemical method and its modification is carried out.

以氧化锌和磷酸为原料，以硅烷偶联剂为改性剂，采用机械力化学湿法制备微细磷酸锌并进行表面改性。

Mineral resources are rich in minerals have been found 48 species, have developed the use of 24, mainly iron, gold, lead, zinc, fluorite, perlite, bentonite, mineral water, etc. Among them, zinc, fluorite's Hebei province ranks the forefront of storage, strontium series, metasilicate series of huge reserves of mineral water.

矿产资源丰富，已经发现的矿种有48种，已开发利用24种，主要有铁、金、铅、锌、莹石、珍珠岩、膨润土、矿泉水等，其中，锌、莹石的贮藏量居河北省前列，锶系列、偏硅酸系列矿泉水储量巨大。

Also the phase transition temperature from hexagonal ZnTiO_3 phase to cubic Zn_2TiO_4 was lowed by adding V_2O_5. It was noticed that V enriched in the boundary of the exaggerated grains, while not be detected in the inner of exaggerated grains or in the boundary of small grains. At sintering temperature 50℃, orthotitanate phase Zn_2TiO_4 in zinc titanate ceramics with ≤1.00wt% WO_3 additions became major phase, while zinc metatitanate ZnTiO_3 became major phase with ≤1.00wt% WO_3 additions.

结果表明：单独掺杂V_2O_5和WO_3有效降低了陶瓷烧结温度，900℃烧结的掺杂0.75wt%V_2O_5钛酸锌陶瓷密度可达理论密度的96.1%，930℃烧结的掺杂3.00wt%WO_3钛酸锌陶瓷的密度达理论密度的95.2%；V_2O_5的添加使六方相ZnTiO_3的分解温度从900℃降到了850℃以下，V_2O_5富积于陶瓷体的晶界处，在V_2O_5富积区附近产生了异常长大的晶粒。

The performance of the selected coating systems was experimentally verified,while some of the selected costing systems were brought into engineering practice.As the results,it was suggested to use a coating system composed of zinc-rich epoxy primer,micaceous ferric oxide epoxy intermediate,and modifie...

结果显示，对完全浸泡的设备，采用环氧富锌底漆+环氧云铁中间漆+改性环氧面漆的涂层体系有很好的防护效果；对干湿交替的设备采用环氧富锌底漆+环氧云铁中间漆+丙烯酸聚氨酯面漆的防护体系具有良好的防护性能，预计其防护寿命可达到8a以上。

Compared with convertional silver zinc reserve battery monopolar,bipolar battery has many advantages.

与传统的单极性锌银贮备电池组相比，双极性锌银贮备电池具有许多优点。

The results show that the maximum growth quantity of Nocardia can be achieved after culturing 120 h and obvious selective adsorption of Nocardia on the surface of pyrite and sphalerite can be detected. The maximum adsorption rate on the surface of pyrite is 96.99%, whereas it is less than 20% in the case of sphalerite. Adsorption equilibrium can be attained within 20 min on the surfaces of the two minerals. pH value is the key factor influencing upon selective adsorption, and the difference of adsorption quantity on the surfaces of two minerals is apparent when pH is between 4 and 10. Slurry concentration over 6 g/L is favorable to selective adsorption. Nocardia cell concentration, stirring speed and temperature have no obviously effect on selective adsorption.

结果表明：培养120 h后诺卡氏菌达到最大生长量；诺卡氏菌在黄铁矿和闪锌矿表面发生明显的选择性吸附，在黄铁矿表面的最大吸附率可达到96.99％，而在闪锌矿表面的吸附率大都在20％以下；诺卡氏菌在两种矿物表面于20 min内即可达到吸附平衡； pH值是影响诺卡氏菌在两种矿物表面发生选择性吸附的关键因素， pH在4～10之间时，选择性吸附现象明显；矿浆浓度超过6 g/L时有利于发生选择性吸附；细胞悬浊液浓度、搅拌速度和温度对吸附效果影响不大，均可产生选择性吸附。

Nymphoides peltatum, a floating macrophyte was used as experimental materials, the contents of nutrient elements were obtained by inductively coupled plasma spectroscopy, the effects of exogenous PAs on Zn accumulation and other nutrient element absorption of plant leaves under Zn stress were observed.

方法］以浮水植物水荷花为试验材料，采用电感藕合等离子体发射光谱法测定各种元素含量，研究了外源多胺对锌胁迫下植物叶内锌富集及其他营养元素吸收的影响。

Through this research,we extended the appliacation of organozinc reagents in organic synthesis.

通过这些研究，我们扩展了有机锌试剂的应用范围，提供了高产率的合成γ-羰基酯化合物的有效方法在第三章中，我们研究了有机锌试剂在Baylis-Hillman类型反应中的应用。

Chapter one:in this section,a brief introduction of the development of polyfunctional organozinc regents was given,and then reviewed the preparation and reaction of organozinc regent.

在第一章中对官能团化的有机锌试剂的发展做了简要的介绍，然后对主要的就官能团化的有机锌试剂的制备以及在有机合成中的应用选择了一些有应用价值和理论意义的制备方法和反应类型做了详细的综述。

Although itsapplication in organic synthesis has extented rapidly, a survey of literature showsthat CuCN·2LiCl is almost the only copper salt for the Michael addition reaction offunctionalized organozinc halides, and the amount of CuCN·2LiCl used isstoichiometric. Because of the toxity of CN〓, we try to carry out the reaction inother way instead of CuCN.

但在带官能团的有机卤化锌的Michael加成反应中，到目前为止基本上都是使用毒性较大的铜盐CuCN-2LiCl，为了寻找更好的方法，并使其成为催化反应，我们以带官能团的有机碘化锌的Michael加成反应为目标反应，对FG-R-ZnI在有机合成中的应用进行了考察，得到了较好的结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。