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In H2S concentration of 50 – 500 ppm, headache, vertigo, weakness, naupathia, balance maladjustment, short of breath, accumulation of liquid in lung and the loss of consciousness etc.

长期低浓度接触，引起神经衰弱综合症和植物神经功能紊乱。50- 500ppm 能引起头疼、眩晕、虚弱、恶心、平衡失调、呼吸的困难、肺中积液、意识丧失等症状。

Hemin can retard the occurrence and development of nephrogenic hypertension of chronic renal failure rats. This role has much to do with inducing the expression of HO-1 in the kidney, increasing the concentration of carbon monoxide in the plasm and reducing the level of ET-1 in the kidney and plasm.

结论hemin组具有延缓慢性肾功能衰竭大鼠高血压的发生和发展作用，这种作用与hemin诱导肾脏HO-1表达、增加血浆CO浓度，降低肾组织和血浆中的ET-1水平有关。

Results Compared with CRF group, nephrogenic hypertension of hemin group was reduced significantly at the 6th, 8th, 10th week after operation, and followed with the decrease of serum creatinine, BUN,urinary protein and the improvement of nephrogenic anemia at the 10th week after operation. Hemin not only increased the expression of HO-1, reduced the expression of ET-1 in the kidney, but also increased the concentration of carbon monoxide, reduced the level of ET-1 in the plasm.

同时，在术后第10周hemin组比CRF组血肌酐、尿素氮、尿蛋白显著降低(P＜0.05)，贫血明显改善(P＜0.05)；肾组织中HO-1表达明显增加，血浆中内源性CO水平明显升高，肾组织和血浆中ET-1水平明显降低(P＜0.05)。

The effects of all kinds of factors, just like calcination temperature of niobic acid catalysts, nitration reaction time, nitration reaction temperature, recovered catalyst, acetic anhydride and concentration of nitric acid were studied by gas chromatography.

研究了催化剂焙烧温度、硝化反应时间、硝化反应温度、有无醋酸存在、硝酸浓度、催化剂的重复使用等因素对甲苯硝化反应影响。

According to the above study result, the diversity of microorganisms population in the SUFR system is complex and the bio-community formed in the SUFR system is stable. The close relations between abundance of bacteria and nutrients were found. The correlation between heterotrophic bacteria and COD was 0.949. The correlation between organic phosphate bacteria and TP was 0.815. The correlation between nitrosobacteria and NH3-N was 0.909. The correlation between disnitrifier bacteria and TN was 0.653. These inneglectable great factors effecting on phosphorus-uptake and phosphorus-release of phosphorus accumulating organisms are the influent COD、the concentration of DO、the sludge retention time、the temperature. The diversity of organic phosphate bacteria population in the SUFR reactor was complex and there is no phosphate bacteria taking the absolute superiority in quantity. The near-native pure culture method powerfully complement the traditional pure culture technique and enrich culture technique. The sludgy bioactivity is very good in whole SUFR reactor. By the quality of being biochemistry, the anaerobic phase is higher than anoxic phase and the anoxic phase is higher than aerobic phase of SUFR.

通过以上试验内容研究发现，SUFR 系统中的微型动物种群较多，微生物生态系统稳定；系统中微生物的数量与营养盐的含量密切相关，其中总异养菌与COD的相关系数r 为0.949，有机磷细菌与TP 的相关系数r 为0.815，亚硝化菌与NH4+-N的相关系数r 为0.909，反硝化菌的数量和TN 的相关系数r 为0.653；污水生物除磷工艺中进水COD 的浓度、DO 浓度、泥龄的长短、温度都是影响聚磷菌释磷及吸磷效果的不可忽视的因素；SUFR 系统中的磷细菌呈现种群多样化的趋势，没有占绝对优势数量的磷细菌；微孔滤膜近自然培养法是对传统纯培养技术和富集培养技术的有力补充；整个SUFR 反应器系统中污泥的生物活性很好，就可生化性来讲，厌氧反应器大于缺氧反应器大于好氧反应器；按照动力学方程式求出的细胞生长动力学特征值和SUFR 脱氮除磷系统工艺的实测值结果基本吻合。

Methods: Rat MSCs were isolated with percoll and nonadherent cells were discarded 48 hours later. The shape was observed and CD34, CD44, CD45, CD166 were detected with Flow cytometry analysis. The growth curve of MSCs in different concentration of fetal bovine serum was observed by MTT colorimetry. The growth curve and attachment efficiency of MSCs of passage 1 (P1), P3, P5 and P10 were also observed.

采用密度梯度离心法结合贴壁分离法分离培养大鼠骨髓MSCs，观察其形态，流式细胞仪检测细胞表面标记，MTT法观察不同浓度的胎牛血清对MSCs生长曲线的影响及不同代MSCs的生长曲线和细胞贴壁率。

More experimental data of condensation heat transfer coefficient, especially ones obtained at some determined pressure of mixtures and concentration of noncondensable gases, are required in order to make a data bank. Therefore, the experiment is arranged for steam-air condensing on the outside of a horizontal smooth tube, and 405 data have been obtained for the pressure of the bulk mixture covering 0.1～0.5bar and the mass fraction of air 0.3%～10.0%.

得到了一些重要结论，尤其是首次得到了&同样含量的空气对压力较高的混合气体冷凝换热的削弱作用较小&、&蒸汽侧冷凝换热系数近似与空气质量成分的对数成正比关系&、&空气含量的增加对蒸汽侧冷凝换热系数的影响随壁面过冷度增大而减小&及&管内冷却水流速取值范围的上、下限随管外蒸汽侧空气含量的增大而减小&等结论，并验证了在本文实验范围内&蒸汽侧冷凝换热系数与相同温度下纯净饱和蒸汽凝结换热系数的Nusselt理论预测结果的比率随壁面过冷度增大而减小&的数值分析结论〓。

AIM: To observe the regulative effects of different concentrations of glucose on the expressions of tumor necrosis factorrelated apoptosisinducing ligand,osteoprotegerin,and the ligand of osteoprotegerin in osteosarcoma MG63 cells,and to study the role of nonphysiological concentration of glucose in pathogenesis of diabetic osteoporosis.

目的：观察不同浓度葡萄糖环境下人成骨肉瘤MG63细胞株肿瘤坏死因子相关凋亡诱导配体及其护骨素、护骨素配体的表达，探讨糖尿病骨质疏松症的发病机制。

N Dq'^8z?1I3q AIM: To observe the regulative effects of different concentrations of glucose on the expressions of tumor necrosis factorrelated apoptosisinducing ligand,osteoprotegerin,and the ligand of osteoprotegerin in osteosarcoma MG63 cells,and to study the role of nonphysiological concentration of glucose in pathogenesis of diabetic osteoporosis.

目的：观察不同浓度葡萄糖环境下人成骨肉瘤MG63细胞株肿瘤坏死因子相关凋亡诱导配体及其护骨素、护骨素配体的表达，探讨糖尿病骨质疏松症的发病机制。

METHODS: A specific HPLC method for determination of whole blood concentration of parent CsA in AA patients receiving CsA was established and compared with nonspecificity PFPIA for determination of the summation of parent CsA and metabolites.

建立一种特异性测定再障患者服药后全血中CsA_的HPLC法。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。