置换

METHODS From July 2000 to March 2005,14 patients received off－pump aortic arch aneurysm surgery. Of these patients,5 were subjected to total aortic arch replacement, 6 partial aortic arch replacement and 3 total aortic arch replacement combined with transaortic stented graft implantation into the descending aorta or partial descending thoracic aorta replacement.

14例患者在常温非体外循环全身麻醉下实施主动脉全弓或部分弓置换术，其中男12例女2例，主动脉弓降部假性动脉瘤12例，先天性弓部动脉瘤2例。

Thus there were several genotypes rotifers coexisting at the same time.

绝大多数DNA置换发生在密码子的第三号位点。

Objective To explore the therapeutic effects of plasma exchange for rejections after renal transplantation.

目的 探讨血浆置换疗法对预防和治疗肾移植后排斥反应的疗效。

Methods Six patients underwent aortic reconstructions or partial aneurysm resections and one did hepatic cavernous hemangioma resection in general anesthesia. Cell saver was used for perioperative blood salvage and the washed blood was reinfused to all patients respectively during operation.

6例动脉瘤和1例肝血管瘤手术患者，在全身麻醉下行人造血管置换或动脉瘤部分切除术，在手术开始或体外循环结束时，启用全自动血液回收系统，回收术野的出血或渗血，进行浓缩、洗涤后，再回输入体内，并按回收-浓缩-洗涤-回输程序重复进行。

Thrusted-expanded lime-soil compaction pile method thrusted-expanded a hammer and lime-soil compaction fill the integration of soil to achieve the purpose of the rule territories through the pile of soil compaction of the salt and lime-soil filling replacement, cementing sclerosis Such as the role of soil has been effective reinforcement.

柱锤冲扩灰土挤密桩法将柱锤冲扩成孔与灰土填料挤密相结合，实现了以土治土的目的，通过对桩周土体的挤密和灰土的冲填置换、胶凝硬化等作用使地基土体得到了有效的加固。

The two pyruvates are then converted by the yeast into carbon dioxide(CO2) and ethanol (CH3CH2OH, which is the alcohol in beer). The overall reaction

两个丙酮酸盐被酵母置换成为二氧化碳(CO2)和乙醇(CH3CH2OH，也就是在啤酒中的酒精)。

Some principles were preposed which should be followed in the production of various color decorative cement.

本文利用晶体场理论解释了所得到的掺杂硅酸钙的光学吸收光谱和电子顺磁共振谱，并由此半定量地计算了对装饰水泥的颜色特性有较大影响的五个过渡金属元素铬、锰、铁、钴、镍在硅酸钙中的晶体场参数，确定了它们的价态，配位状态和置换方式，提出了生产不同颜色的装饰水泥所应遵循的一些原则。

These three pions may actually be joined together transiently as a compound particle during the interchange process.

在这个置换过程中，这三个介子也许真的在瞬间结合成一种合成粒子。

The coordinated COD of 3 and 4 can be replaced by carbon monoxide to yield the corresponding dicarbonyl species [(C,N-pyN^C-R) M2]BF4 (14, M= Rh; 15, M= Ir). Ligand substitution of 11a by phosphines and azide causes the de-complexation of pyridinyl-nitrogen donor to generate the corresponding carbene rhodium complexes [(C-pyN^C-Mes)RhPR3] (17a, R = Ph, 17b, R = Et) and [RhN3] (19), respectively, indicating the labile nature of steric-hindered pyridinyl-nitrogen donor.

螯合错合物的吡啶配位，可以容易被σ-予体，如卤离子、叠氮阴离子、膦试剂，置换；但是铑与铱金属螫合物与π-酸试剂，如一氧化碳、异腈，则发生COD被置的产物14a与16；与三甲基亚磷酸酯反应时，COD及吡啶均会被取代而得到单芽的三铑-碳烯错合物18；双膦化合物则会取代铑金属上全部的配位基。

I also have synthesized nanocrystallinecobalt phosphides via metathesis reaction at 180℃. Different routes have been appliedto prepare nanocrystalline Ni〓P. The influences of the crystallization water of metalchloride were also discussed.A series sulfides of VIII metals have been fabricated.

1采用溶剂热技术通过置换反应在300-350℃合成了20nm的CrN纳米晶，与传统固相制备法相比，大大降低了反应和结晶温度；在180℃合成了磷化钴纳米粉，XRD显示两相共存(C0〓P、CoP)，TEM中也证实两种形貌的存在；该技术成功的解决了前驱物易水解的问题。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。