对高水平散手运动员赛前训练部分生化指标的监测分析

通过文献资料法、实验法、数理统计法和系统方法,对湖北省参加2004年全国散打锦标赛的高水平运动员在赛前训练的部分生化指标进行了监测。结论表明:通过对赛前血色素、血尿素、血清肌酸激酶变化的观察,其能反映高水平运动员对赛前运动负荷的适应情况以及身体机能的状况。安静时血乳酸值对周训练后运动员机能水平变化的反映不灵敏,运动后血乳酸值可反映赛前训练对抗强度及运动员的无氧能力。     

稀土配合物Sm（hq）2Ac的标准摩尔生成焓的测定

用具有恒温环境的溶解-反应量热计,测定了在T = 298.15K时[SmCl3 6H2O (s) + 2Hhq (s)+NaAc(s)]和[Sm(hq)2Ac(s)+NaCl(s)+2HCl(g)+6H2O(l)]反应的标准摩尔反应焓为(213.6±1.5)kJ mol-l,根据上述标准摩尔反应焓和其它的热力学数据可求得在T = 298.15 K时Sm(hq)2Ac-l的标准生成焓是 (1217.7±3.4)kJ mol.     

肺炎衣原体与急性心梗、心绞痛型冠心病的关系

目的：探讨肺炎衣原体（TWAR）与急性心梗（AMI）、心绞痛（Angina）型冠心病之间的关系。方法：采用多聚合酶链反应（PCR）技术对200例冠心病（急性心梗56例,不稳定心绞痛124例,稳定心绞痛20例）和180例非冠心病患者进行全血标本肺炎衣原体DNA检测。结果：急性心梗组肺炎衣原体DNA阳性率为73.2%,不稳定心绞痛组为52.4%,稳定心绞痛组为45.0%;对照组为21.1%,三组与对照组相比,差异均有显著性（P〈0.01,P〈0.01,P〈0.05）。结论：肺炎衣原体感染与急性心梗、心绞痛型冠心病存在密切关系。     

Ge-DDMBA-PF在氯乙酸介质中光度法测定锗

本文介绍在氯乙酸存在下,Ge—DDMBA—PF形成红色配合物测定锗的方法。配合物的组成为Ge:PF=1:2,最大吸收λ=530nm,摩尔吸光系数ε=1.45×10~51·mol~(-1)·cm~(-1);锗含量在0～5ug/25ml符合比尔定律。方法操作简单,显色快且稳定,用于铅锌矿渣中锗的测定,结果满意。     

钢帘线盐酸废水回用技术研究与应用

钢帘线生产酸性废水中氯离子含量高,难以回用。文章研究了盐酸再生和中水回用技术,采用阴离子均相膜扩散渗析法处理钢帘线盐酸废水,并将研究成果应用于江苏兴达钢帘线股份有限公司九厂污水站的工程实践。实践表明,该厂盐酸用量减少42％,中水回用率保持在80％以上,年节约经济总值达到780万元,取得了良好的经济、社会效益。     

Effect of fangchinoline on oxidant status in male albino rats with streptozotocin-induced diabetes

BackgroundDiabetes is a metabolic disorder caused by defects in insulin production and activity. During disease progression, changes in lipid peroxidation cause structural modifications via production of free radicals. Fangchinoline is a well-known alkaloid present in Stephaniae tetrandrine S. Moore, which has demonstrated antioxidant, anticancer, and anti-inflammatory activities.ResultsThe present study analyzed the anti-diabetic and antioxidant effects of fangchinoline in male rats with streptozotocin-induced diabetes. Rats were divided into the following groups: normal control, diabetic, diabetic + fangchinoline 100 mg/kg, diabetic + fangchinoline 200 mg/kg and diabetic + glibenclamide 600 µg/kg. The treatment was administered orally for 45 consecutive days. Lipid peroxidation was substantially increased by >50% in the serum, as well as the liver, kidney, and heart tissues of diabetic rats. However, fangchinoline supplementation significantly reduced lipid peroxidation to near normal levels. Reactive oxygen species levels were substantially increased by >500% in the serum, as well as the liver, kidney, and heart tissues of diabetic rats. Fangchinoline supplementation reduced reactive oxygen species to near normal levels. Fangchinoline supplementation significantly improved superoxide dismutase, glutathione peroxidase, catalase, and reduced glutathione levels in diabetic rats. Total hexoses, sialic acid, hexosamines, and fucose were increased in diabetic rats, whereas fangchinoline supplementation significantly reduced these total hexoses, sialic acid, hexosamines, and fucose to near normal levelsConclusionsSupplementation with fangchinoline led to significant attenuation of the levels of lipid peroxidation, ROS, and glycoprotein components such as total hexoses, hexosamines, sialic acid, and fucose, while improving antioxidant marker levels.How to cite: Xia J, Huang W, Zhou F. Effect of fangchinoline on oxidant status in male albino rats with streptozotocin-induced diabetes. Electron J Biotechnol 2021;53. https://doi.org/10.1016/j.ejbt.2021.07.005     

水杨酸对盐胁迫下西瓜种子萌发特性的影响

采用培养皿发芽法,研究了水杨酸浸种对盐胁迫下西瓜种子萌发和幼苗生长的影响。结果表明,300mmol/L NaCl溶液浸种显著降低了西瓜种子的发芽率、发芽势、发芽指数和活力指数及胚根长和胚芽鲜重;1.0mmol/L以下浓度水杨酸浸种使盐胁迫下西瓜种子萌发和幼苗生长量随水杨酸浓度提高而显著增加;2.0 mmol/L水杨酸浸种对盐胁迫下西瓜种子萌发和幼苗生长无明显影响,3.0 mmol/L水杨酸浸种进一步降低了盐胁迫下西瓜种子萌发和幼苗生长量。结果说明,较低浓度水杨酸浸种可缓解盐胁迫对西瓜种子萌发和幼苗生长的抑制作用,减轻西瓜种子萌发期盐胁迫伤害的最适水杨酸浓度为1.0 mmol/L。     

柞蚕蛹中脂肪酸成分的GC／MS研究

采用索氏提取方法提取柞蚕蛹油,用KOH／CH,OH酯交换法甲酯化处理,以气相色谱／质谱方法测定脂肪酸的组成．共鉴定出13种脂肪酸成分,其中以亚麻酸（LNA）、棕榈酸（P）、硬脂酸为主,柞蚕蛹油中不饱和脂肪酸含量占总脂肪酸总量的66．63％．     

SAP材料的接枝反应动力学实验研究

对淀粉接枝丙烯酸所得接枝共聚物及接枝侧链物进行分离提纯和分析测试,确定了其接枝效率并表征了淀粉及其接枝物的形态结构;通过分别测定接枝共聚反应速率与淀粉、单体、引发剂浓度的关系曲线,确定了该接枝共聚反应的速率关系式;推算出了反应的表观活化能。     

聚硅酸的PFS改性及其絮凝性能的研究

本用PFS对含SiO22%的聚硅酸作了改性研究,当Fe/Si mol比小于2时,合成的PFSS溶胶体系稳定性有所增强,用Fe/Si mol比为1．5的PFSS絮凝处理受工业排水污染的含CODcr92mg/L,SS36mg/L,色度48倍,pH为6．5的混合污水,投量按Fe2O3计16mg/L时,絮凝30min后云污率大于90％,CODcr去除率达89％,比PFS节省Fe2O3投量约三分之一,显示出良好的电性和架桥的双重功效,是一种值得继续开发研究的新型复合无机絮凝剂。