查询词典 donor impurity

Methods The free flap donor sites with long vascular pedicle and large diameter of vessel were routinely chosed, and chose receipt vessels with large diameter and proper position, and perform vessel ananstomosis under surgical loups instead of microscope.

方法选用血管蒂较长和血管口径较粗的游离组织瓣供区，选择口径粗大和位置合适的受区血管，将游离瓣制备成外露瓣，以利于术后血供的监测，在手术放大镜下行血管吻合，部分病例同时吻合2根静脉，以确保游离瓣的静脉回流。

Thermochemical Hole Burning memory uses the STM heating effect to induce a localized thermochemical decomposition of Charge Transfer Complexes, evolving the low-boiling point donor component and creating nanometer-sized holes on the crystal surface. In this thesis, we focus our research on the material synthesis and storage mechanism of THB memory.

热化学烧孔(Thermochemical Hole Burning，THB)技术是基于STM的超高密度信息存储技术，它利用STM针尖产生的隧道电流或场发射电流的焦耳热效应，诱导二元电荷转移复合物材料发生局域热化学气化分解反应，使低沸点组分从样品表面逸出，形成纳米尺度的信息孔。

In contrast, Al2TiO5 can not be synthesized at low temperatures using methanol or tert-butyl alcohol as oxygen donor due to their high chemical reactivity resulting in hydrolysis reaction.

以TiCl4和无水AlCl3为原料，以无水低碳醇为氧供体通过非水解溶胶-凝胶法低温合成了钛酸铝，研究了无水低碳醇种类及用量对钛酸铝合成反应的影响。

Acting as an antenna molecule in the supramolecular system, Mg(superscript 2+)-HA remarkably enhances the photoinduced electron transfer efficiency between C60 and an electron donor, N, N-dimethylaniline.

作为超分子体系中的光捕获分子，Mg(上标 2+)-HA能显著地提高C60与N，N-二甲基苯胺的光诱导电子转移反应效率，生成的C60负离子自由基的电子自旋共振光谱信号强度比未加入Mg(上标 2+)-HA时增强了9倍左右。

Here we show that transfer of pronuclei between abnormally fertilized human zygotes results in minimal carry-over of donor zygote mtDNA and is compatible with onward development to the blastocyst stage in vitro.

供体合子mtDNA的转移是很少的，所以该方法有可能防止mtDNA疾病在人类中的传播。

25 Adult male SD rats and Wistar rats, haevested donor organs include arteria abdominalis, left kidney, left kidney vessels, left ureter, vesica urinarya and a part of bladder.

供体切取范围包括腹主动脉(上至腹腔动脉以下，下至左肾动脉下方约0.8cm)、左肾、左肾动静脉、左输尿管，部分膀胱。

Compared with low resolution results of HLA-DRB1 alleles,high resolution results were analyzed to see any correlation between HLA-DRB1 alleles and GVHD. by double-blind statistically analysis of HLA-DRB1 high resolution in 48 donor/recipient typings in UCBT.

利用盐析或柱提法提取48例非亲缘性脐血及移植患者全血DNA，采用HLA-SBT方法分别对HLA-DRB1等位基因进行高分辨分型，并与HLA-SSP（HLA-sequencing specific primers）低分辨结果进行比较分析。

Theoretical calculations on a series of N-H…O=C hydrogen bond trimers were carried out using the MP2 method. We investigated the effect of substituents in hydrogen bond donor molecules on their hydrogen bond strength.

使用MP2方法研究了氢键三聚体中N-H…O=C氢键强度，探讨了氢键受体分子中不同取代基对N-H…O=C氢键强度的影响。

Arylselenoureas with electron donor group on benzene ringreacted with excess sulfinyl chloride to give 2-aminobenzosele-nazoles.

苯环上有给电子基的N-芳基硒脲在过量的氯化亚砜中自动氧化合环生成2-氨基取代笨并硒唑。

The US is the world's stingiest donor, giving a miserly 0.15 per cent of its GNP.

这是一种从作者付费模式到遭拒作者付费模式的转变。

A small, rubber-headed hammer used in examination or diagnosis by percussion.

叩诊槌用在通过''。'振荡'。''所作的检查或诊断中的橡皮头的''。'小'。''槌

Affixes are limited in number in a language, and are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position with reference to the root or stem of the word.

语言中词缀的数量总是有限的，根据它们跟词根或词干的相对位置，一般可以把词缀分外三小类：前缀，后缀和中缀。