查询词典 arithmetic al function

In 2000, Nishida et al synthesized the PPDO whose molecular weight could reach 142,000 but the monomer conversion could only reach 79.4% by using stannous octoate as catalyst with co-initiator under conditions that T = 100oC, M/I = 4900, t = 20 h, in 2000, the enzymatic polymerization of PDO was carried out at 100oC for 15 hours using 5wt% immobilized lipase CA by Nishida et al.

这主要是因为PDO的结构相对稳定，开环聚合要比GA、LA、CL困难一些，而且用于PDO开环聚合的催化剂体系单一，主要集中在Ti， Zr， Sn， Ld， La， Yb， Hg等重金属，然而这些重金属作为副产物，不容易从PPDO中分离出来，阻碍了PPDO作为医用材料的应用，这也造成了PPDO的成本昂贵。

Due to the increasingly deep concerns about the cytotoxicity of stannous octoate, which is the most widely used catalyst for synthesizing polyesters derived from lactides (L-LA, D, L-LA, GA) via ring opening polymerization, a lot of new metal complexes of relatively low toxicity including Schiff base–Al complexes, Red-Al were developed and used to initiate the living, stereo-specific, and/or stereo-selective ROP of lactides.

由于合成聚乳酸类生物医用降解材料的最常用的催化剂辛酸亚锡 Sn2的细胞毒性问题已在世界范围内引起日益深切的关注，近年来国内外学者已研究开发出许多性能优异的低毒、非锡金属络合物催化剂（如：位阻西佛碱-Al 络合物， Red-Al 等）用于催化交酯类单体的活性、立构专一性及立构选择性聚合反应。

Malaianus, H.verticillata et al, whose occurrence rate was 100% and weight percent was 85.6%; Secondly, it can feed on humus of organism, whose occurrence rate was 100% and weight percent was 10.0%; Thirdly, it can also feed on a little Filamentous alage, Floating algae, Zoonplankton, Oligochaeta, Tendipes, Procambarus clarkii et al, whose occurrence rate was less than 10%,and weight percent was only 5.4%.

食性 克氏原螯虾(体长3.0cm～10.6cm，体重1.6g～80.3g)的摄食种类主要是竹叶眼子菜、黑藻等大型水生植物，出现频率达100％，重量百分比达85.6％；其次是有机碎屑，出现频率达100％，重量百分比为10.0％；同时还有少量的丝状藻类、浮游藻类、浮游动物、寡毛类、摇蚊幼虫、克氏原螯虾的残体等，这些种类出现率都小于10％，重量百分比仅为5.4％。

The ophitic and subophitic textures, elongated apatite crystals, low Al(superscript Ⅵ)/Al(superscript Ⅳ) ratios (0.00-0.28, 0.12 on average) in clinopyroxene, and low Cao content in olivine (0.04%~0.24%, average 0.12%) indicate that the gabbrowas crystallized at a low pressure.

辉长岩所具有的辉绿辉长结构、大量细长针状磷灰石、单斜辉石中较低的Al/Al值（0.00~0.28，平均为0.12）及橄榄石中较低的CaO含量（0.04%~0.24%，平均为0.12%），均体现出浅成侵入岩的特点。

Osmotically produced "root" pressures, which may reach several hundred kPa, either force emboli into solution or push the air out of hydathodes or open vessel ends Sperry et al. 1987, Fisher et al.

渗透地生产了&根&压力，可能到达一些百 kPa，或力量 emboli 进入解决之内或者由于 hydathodes 或公开船结束(Sperry 等人 1987，渔人等人 1997)推动空气。

Al becomes a major factor limiting crop growth and yield when solubilized in acid soils to phytotoxic species Al3+, but the mechanism underlying the Al toxicity remains largely unknown.

铝毒是酸性土壤中植物生长发育的主要限制因子，但目前关于铝毒的生理学机制并不很清楚；另外，关于园林花卉的铝毒害研究尚未见报道。

The effect of preparation method of Al-pillared agent、rectorite suspending concentration、Al-pillared agent dosage、pillaring reacting temperature、pillaring reacting time are investigated;The optimum process condition is determined. The capability has compared with the nature rectorite. It is characterized by X-ray Diffraction and infrared spectrum.

探讨了铝交联剂制备方法、累托石悬浊液浓度、铝交联剂的用量、交联反应温度、交联反应时间等各因素对其制备的影响规律，确定了铝交联改性的最佳工艺条件；进行了与天然累托石的性能比较；运用红外光谱、X-射线衍射对所制铝交联累托石进行了表征。

Results show that protons are liberated by dehydration or dehydroxylation after calcination at 500℃. These protons disrupt the silicon-oxygen-aluminium bridges where there are Al substitutions in the tetrahedral sheet of the montmorillonite. Some of silicon-oxygen and aluminum-oxygen tetrahedral invert to react with the pillaring agents and yield covalent bonds which firmly fix the pillars to the host clay. The Al-MMT are thermally and hydrothermally stable up to 700℃.

经过500℃高温焙烧后，交联剂经脱水或脱羟基释放出质子攻击蒙脱土四面体层中Si-O-Al四键，硅氧四面体和铝氧四面体发生翻转，与交联剂发生反应生成共价键，形成稳定的层柱黏土材料，在700℃高温下，Al-MMT材料不仅具有较好的热稳定性，而且具有较好的水热稳定性。

The use of the ratio between the migration length and the diameter of the comet head (LDR, see Tice et al., 2000) as a parameter to represent the data of the genotoxic effects in D. polymorpha was found (Bolognesi et al., 2004) to be able to reduce the inter-individual variability of the data (from 20–30% for TL to 5–10% for LDR).

使用的，两者的比例约为迁移长度和直径的彗星头（低剂量辐射，见泰斯对持不同等人， 2000年）作为参数，以代表该数据的遗传毒性效应四多形被发现（ bolognesi等人， 2004年）为了能够减少跨个别变异性数据（从20-30 ％铊，以5-10 ％的LDR ）。

The results showed that the interactions between Al(superscript 3+), Fe(superscript 3+), polysilicic acid, the polynuclear hydroxy complexes of Al(superscript 3+), Fe(superscript 3+) and SO(superscript 2- subscript 4) had a compositive effect of electric neutralization, adsorption and bridge on the coagulating properties.

结果表明，含硅多核无机高分子絮凝剂的混凝作用是铁离子、铝离子、聚硅酸、铝铁离子的水解聚合物以及它们和硫酸根离子相互作用的产物对废水中胶体悬浮物颗粒的电中和、吸附架桥及粘附卷扫等综合作用的结果。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。