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U.S. insurer Assurant Inc. has added to the current catastrophe bond pipeline by beginning to market its second Ibis Re cat bond transaction Ibis Re II Ltd. Marketing to investors began this week and Ibis Re II is expected to close in May.

美国保险公司 Assurant的公司增加了本周二重新宜必思目前巨灾债券市场的管道开始其第二鹭鹭再重新巨灾债券交易二级市场投资者开始公司预计5月结束。

The maximal absorption wavelength of the nitro-stilbene derivatives with an ether bond exhibited approximate 30 to 40 nm bathochromic shift compared to that of nitro-stilbene dyes with an ester bond.

相对于酯键而言，通过醚键连接的对硝基二苯乙烯类分子的最大吸收波长有一个大约30至40 nm的红移现象。

The results show that there are eight reaction channels, corresponding to eight transition states, in the reaction process. The main parts of all transition states are non-planar five-membered ring, in which the geometry of Z -benzaldoxime and E -benzaldoxime is maintained partially, but the bond length, bond angle and charge are all changed.

结果表明，在苯甲醛肟与炔丙醇加成反应过程中， 8个可能反应通道的过渡态中均形成非平面五元环结构，其中苯甲醛肟的 Z 、 E 构型特征得到了部分保留，但主要部分的键长、键角均发生了变化，电荷也进行了重新分布。

It isconfirmed by ~1H NMR,~(13)C NMR and X-ray crystallographic analysis that complexes 60-63are monopyridine complexes and show distorted square pyramid geometries; complexes 64and 65 are bispyridine complexes and show pseudo-octahedral geometries, where twopyridine ligands are in cis arrangement and trans to the NHC and the benzylidene ligandrespectively, the bond length between ruthenium and pyridine ligand trans to the benzylideneligand is 16 pm longer than the bond length between ruthenium and pyridine ligand trans tothe NHC ligand.

1H NMR、~(13)C NMR及X射线单晶衍射分析证明，配合物60-63是单吡啶衍生物配位的钌卡宾配合物，具有变形的四方锥构型；配合物64、65为双吡啶衍生物配位的钌卡宾配合物，具有变形的八面体构型，其中两个顺式配位的吡啶衍生物分别处于氮杂环卡宾和苯亚甲基的反位，处于苯亚甲基反位的吡啶衍生物对应的钌-氮键长要比处于氮杂环卡宾反位的长出16 pm。

The bond lengths,bond angles and molecular conformation indicate that:in these polyphenoxy benzene systems the conjugative polari...

的分子构象、键长和键角数据表明氧桥两边的苯环的共轭极化效应不能贯通，而苯氧基只是分子中的一个独立片断。

The result showed that Si--Si covalent bond eAsts in the melt of eutectic and hyper--eutectic alloy and Sr has capability to weaken the coto bond.

结果表明，在共晶及过共晶的合金的液态结构中，存在着Si—Si共价键，Sr有削弱这些共价键的倾向。

Compared with the double bond of cyclopentene ring, the double bond of the norbornene ring has much more lower activation energy in the hydrogenation and the main intermediate product is 14,15-DHTCPD.

非晶态合金催化剂晶化过程的原位分析结果表明，在热处理温度低于150°C条件下其结构基本保持稳定，而高于450°C条件下热处理后晶化度大于90%，600°C以上热处理后完全晶化。

The double bond in norbornene ring of TCPD was easily saturated at a low temperature, and an intermediate 12,13-dihydrotricyclopentadiene (12,13-DHTCPD) was formed. Higher temperature and hydrogen pressure were required for the saturation of remaining double bond in cyclopentene ring to generate a completely hydrogenated compound tetrahydrotricyclopentadiene.That is to say, the reaction occurred via the TCPD→12,13-DHTCPD→THTCPD route.

采用气质联用、红外光谱和核磁共振对加氢产物进行表征，发现在加氢反应中TCPD的降冰片烯双键首先被饱和，生成中间产物12，13-二氢三环戊二烯(12，13-DHTCPD)，残留的环戊烯双键需要在更高的温度和氢压下反应生成四氢三环戊二烯，即反应按照TCPD→12，13-DHTCPD→THTCPD的途径进行。

Plasma sprayed dicalcium silicate bond tightly to Ti-6Al-4V substrate, its bond strength is up to 38.9 MPa.

等离子喷涂硅酸二钙涂层与 Ti-6Al-4V 基体结合强度较高，其值可达38.9 MPa 。

Since the improper blue-shifted H-bond and dihydrogen bond were found,the unusual phenomena have attracted more and more attentions of scientists.

特别是反常蓝移氢键和双氢键的发现，更加引起了科学家们的广泛关注。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？