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The effect of genistein (0.8 mg/kg) was partially inhibited by L-NAME, or by sodium orthovanadate (50 μg/kg), a potent inhibitor of protein tyrosine phosphatase;(2) genistein also decreased the PP of renal vascular bed in a dose-dependent manner and the effect of genistein was completely inhibited by pretreatment with sodium orthovanadate, but unaffected by L-NAME; and (3) genistein decreased the PP of mesenteric vascular bed in a dose-dependent manner, an effect which was partially inhibited by sodium orthovanadate, but unaffected by L-NAME.

GST的这一效应可被L-硝基精氨酸甲酯部分阻断，预先注射蛋白酪氨酸磷酸酶抑制剂正钒酸钠(50 μg/kg)，可部分抑制GST (0.8 mg/kg)引起的效应；(2)向肾血管灌注环路中直接注射 GST 也可剂量依赖性地降低肾动脉的灌流压，预先注射正钒酸钠可完全抑制GST引起的效应，而L-NAME对此效应没有影响；(3)肠系膜血管灌流环路中注射GST可剂量依赖性地降低其灌流压，这一效应可被正钒酸钠部分抑制，而L-NAME对此无影响。

The effect of genistein (0.8 mg/kg) was partially inhibited by L-NAME, or by sodium orthovanadate (50 μg/kg), a potent inhibitor of protein tyrosine phosphatase;(2) Genistein also decreased the PP of renal vascular bed in a dose-dependent manner. The effect of genistein was completely inhibited by pretreatment with sodium orthovanadate, but unaffected by L-NAME;(3) Genistein decreased the PP of mesenteric vascular bed in a dose-dependent manner, an effect which was partially inhibited by sodium orthovanadate, but unaffected by L-NAME.

GST的这一效应可被L-硝基精氨酸甲酯部分阻断，预先注射蛋白酪氨酸磷酸酶抑制剂正钒酸钠(50 μg/kg)，可部分抑制GST (0.8 mg/kg)引起的效应；(2)向肾血管灌注环路中直接注射 GST 也可剂量依赖性地降低肾动脉的灌流压，预先注射正钒酸钠可完全抑制GST引起的效应，而L-NAME对此效应没有影响；(3)肠系膜血管灌流环路中注射GST可剂量依赖性地降低其灌流压，这一效应可被正钒酸钠部分抑制，而L-NAME对此无影响。

Using the KMnO4 titration method to detect the catalase activity and the sulfosalicylic acid method to detect the free proline content, the changes of catalase activity and free proline content of plants in Kaili area under air pollution were studied with the representative plants such as Camellia oleifera, Pinus massonina, Cunninghamia lanceolata, Woodwardia japonica and Dicranopteris pedata in Kaili area as research subjects.

方法］以凯里地区的代表性植物（油茶、马尾松、杉树、狗脊蕨和铁芒萁）作为研究对象，采用KMnO4滴定法测定过氧化氢酶的活性，采用磺基水杨酸法测定游离脯氨酸的含量，研究大气污染影响下凯里地区植物过氧化氢酶活性、游离脯氨酸含量的变化情况。

As an important plant osmotic regulators, glycine betaine in plants, under the osmotic stress, can be accumulated in order to give the plants high salt-tolerance by reducing osmotic pressure and maintaining proteinic structure in cell.

甘氨酸甜菜碱是一种重要的调渗物质，在盐胁迫下有些植物能通过体内甘氨酸甜菜碱的积累保护细胞内蛋白质的结构和功能，降低细胞水势，从而来增加自身的耐盐能力。

In addition, we also characterized the pured product including Mono-SGC and Di-SGC by IR, UV, XRD, TG-DTG There are many similar characterization, so we can conclude that their struction are very similar. There are some special quality about Di-SGC.

通过对一甘氨酸钠碳酸盐和二甘氨酸钠碳酸盐的IR、UV、XRD、TG-DTG表征性质研究，我们发现一甘和二甘的上述表征有许多类似的地方，从而可以看出它们有十分类似的结构。

The cDNA (BplPAL1) encoding phenylalanine ammonia-lyase were cloned from Betula platyphylla by reverse transcription polymerase chain reaction and 5' and 3' rapid amplification of cDNA ends, which contains an open reading frame (2322 bp) encoding 773 amino acids. The amino acid sequences contain two functional domains of PAL-HAL and PAL, and the sequence of enzyme active site, which has 60%~73% of consistency with other five plant species and the consistency with Rhizophora mangle is the highest (73.1%).

利用RT-PCR和RACE技术从白桦中克隆了编码苯丙氨酸解氨酶的cDNA，其2322bp的ORF编码773个氨基酸，其推导的氨基酸序列包含PAL-HAL和PAL2个功能域以及酶活性中心序列GTITASGDLVPLSYIA，该序列同其它5种植物的序列一致性为60%~73%，其中与美洲红树最高为73.1%。

Synthesis and Characterization of MWNT-containing Polyurethane-urea Based on the typical two-step polyurethane-urea synthesis, self-crosslinkable polyurethane-urea compounded of PTMO Poly (tetramethylene oxide, MDI (4,4'-diphenylmethane diisocyanate) and extended by AEAPS (aminoethyl aminopropyl trimethoxysilane) were prepared.

含有纳米碳管的聚氨酷的合成、表征及性质研究首先通过典型的两步法合成了软段为pTMOPoly(tetramethyrene oxide，叠年东师范大李博士后么站银告硬段为MD！(4，4'一diPhenylmethane diisocyanate)，扩链剂为AEAPS (aminoethylaminoProPyltrimethoxysilane)的聚氨醋。

Below its critical micelle concentration, SDS effect facilitated the energy transfer from the component at 232 nm to the tyrosyl residues in PS II proteins, and also resulted in less micropolarity for tyrosyl residues, whilst at or above its cmc, SDS had an opposite effect.

低于其临界胶束浓度时，SDS会促进蛋白质中232 nm外的组分与酪氨酸之间的能量传递，并且使酪氨酸残基外于极性更小的环境；而大于cmc时，SDS却产生相反的效应。

Results Mobiligy shifts of SSCP in exon 5 of presenilin-1 was detected in 4 cases with Alzheimer,s disease. Two missense mutation were found in the patients by DNA sequence analyse, one mutation was Leu 130 Met and the other was Vall 57 Leu.Another 11 patients showed one single strend shifted rapidly. But none mobility shifts of SSCP were found in patients with vascular dementia and normal controls. Conclusions It is shown that mutations in exon 5 of presenilin-1 also exist in the patients with sporadic Alzhemer?

结果 发现4名SAD患者的PCR产物SSCP分析发生泳动异常，DNA序列分析发现：这4名SAD患者的130号密码子发生了CTG→ATG错义突变(388位点发生C→A突变)，使编码的氨基酸由亮氨酸变为蛋氨酸(Leu 130 Met)；157号密码子发生了GTG→CTG错义突变(469位点发生G→C突变)，使编码的氨基酸由缬氨酸变为亮氨酸(Val 157 Leu)，另有11名患者SSCP表现为一条单链增快，其性质待定。

We through search the stable zwitterionic conformers in solution using Self-Consistent Reaction Field Model. We study the properties of aspartic acid such as ionization energies, electron affinities and IR spectra and compare with the results in gas phase.

我们使用自洽反应场模型对天冬氨酸水溶液中的双电性构型进行了系统的寻找，研究了水溶液中天冬氨酸构型的电离能、电子亲合能以及红外光谱等性质，并与气相中的结果进行了对比。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。