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This point can reasonably account for the failure of directly oxidative radioiodination of alkaloids observed in our lab and in other labs over the world. The in vivo biodistribution and pharmacokinetics of -iodo-α-Allocryptopine and -iodo-chelidonine were studied in normal mice.

这一机理可较好地解释为何难于通过直接氧化法对生物碱化合物进行放射性碘标记研究了碘-131标记的α-别隐品碱和白屈菜碱在正常小鼠体内的组织分布和代谢动力学。

The biotransformations of isoeugenol to vanillin with various strains available in our lab were tested. It was found that several baterica including Bacillus subtilus 7658, Alcaligenes AS1.7617, Brevibacterium flavum 1.7a and Brevibacterium flavum AS1.013 could convert isoeugenol to vanillin.

对实验室所保藏的细菌、放线菌、真菌进行初步筛选发现细菌中枯草芽孢杆菌7658、粪产碱杆菌AS1.7617、黄色短杆菌1.7a、黄色短杆菌AS1.013能产生少量香草醛，最高浓度为0.31 g/L；放线菌中诺卡氏菌Nocardia sp。

Objective To research on the lysogenic bacteriophage CTXΦ genome, for isogenous sequences with RS in the chromosomes were found in some strains of ctxAB- E1 Tor biotype isolates in this lab.

目的 近年研究发现产毒霍乱弧菌的毒素基因ctxAB由其溶原性噬菌体CTXΦ编码，这种丝状噬菌体可携带ctxAB传递给无毒素基因的霍乱菌株。

Firstly, polyacrylamide with 26 million molecular weight was compounded in lab through establishing optimum compounding initiator proportionality of 1:1. 3 and mass concentration of 170 mgL^(-1), temperature of 10 ℃, acrylamide mass percentage of 25%, electrical conductivity of 3.6 μSm^(-1) and pH value of 6.57. The salt-resistance, thermal endurance and shear-resistance of polyacrylamide could be enhanced b introducing sulfonic acid group or styrene sulfonate group or drawing the two groups above at the same time. Secondly, chelator HEDP, bactericide isoquinoline ketone and oxygen scavenger thiourea were optimized to improve the compatibility of polyacrylamide and formation water.

在由室内试验确定了复合引发剂最佳比值1：1.3和质量浓度170 mgL^(-1)、合成最佳温度10℃、丙烯酰胺单体质量分数25%、电导率3.6μSm^(-1)和pH值6.57后，合成出相对分子质量高于2.6×10^7的聚丙烯酰胺，同时通过丙烯酰胺单体复配引入磺酸基团、苯乙烯磺酸基团或同时引入此两种基团，提高了聚合物的抗盐、抗温、抗剪切性能；后针对聚丙烯酰胺与地层水配伍性差的问题，优选出HEDP螯合剂、异噻唑烷酮杀菌剂和除氧剂硫脲，对聚合物稳定效果明显。

He-Ne laser machine is useful in scientific research and lab teaching.It has jarless wavelength and concentrated energy.

氦氖激光器在科学研究、实验教学方面有较大用处，它不仅相干性好，波长稳定，能量集中，且价廉物美。

These calculations and observations attracted the attention of robotics specialist Oussama Khatib, PhD, professor of computer science, who heads Stanford's artificial intelligence lab.

这些计算和意见，引起了注意，机器人专家oussama哈提卜，博士，教授，计算机科学，谁元首斯坦福大学的人工智能实验室。

By rearing and observation two species firefly in the lab, it is found that the eggs of Lampyridae glow slightly and continuously in the dark environment and that the pupae can emit light weakly.

由于萤火虫的发光是一个消耗能量的化学反应过程，因而其发光在成虫之外的虫态也具有重要意义。

The Guardian can reveal that a team of 20 top scientists assembled by Mr Venter,led by the Noble laurate Hamilton Smiith,has already constructed a synthetic chromosome,a feat of virtuoso bio-engineering never previously achieved.Using lab –made chemicals,they have painstakingly stitched together a chromosome that is 381 genes long and contains 580,000 base pairs of genetic code.

家长可以显示一个20人的团队的顶尖科学家通过文特的带领下，高贵的laurate汉密尔顿Smiith，已经建造了一个合成染色体，这一壮举的演奏家生物在以前从未达到使用化学实验室，他们之前在刻意的染色体缝长和包含381基因遗传密码的580，000降到了现在的碱基对。

Under lab condition.［Result］ TN and TP concn. in the sewage were decreased constantly with the increase of duckweed treating time in 0-10 d. The purification ability of Spirodela Schleid on TN and TP was higher than that of Lemna L. The maximal removal rates of duckweed on TN and TP in sewage diluted at 5 times were 71.14% and 81.00% resp. and that in the sewage diluted 10 times were 92.18% and 91.33% resp.

结果］ 污水TN和TP浓度随浮萍处理时间（0～10 d）增加而持续降低；紫萍属浮萍对TN和TP的净化能力优于浮萍属浮萍；浮萍对稀释5倍的供试污水TN和TP的最大去除率分别为71.14%和81.00%；浮萍对稀释10倍的供试污水TN和TP的最大去除率分别为92.18%和91.33%。

Ninety LAB isolated from fermented cabbage were identified as species of Lactobacillus and Leuconostoc, whereas 115 clones of the 16S rRNA gene sequence from fermented cabbage DNA were identified as Lactobacillus, Weissella, Pediococcus and Leuconostoc.

从培养平板分离得到的90株乳酸菌鉴定为Lactobacillus属和Leuconostoc属。通过对115个16S rRNA基因序列对比发现非培养样品的乳酸菌为Lactobacillu属，Pediococcus属 Leuconostoc属，Weissella属。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。