甘蔗糖蜜酒精生产废水治理——发酵系统的生化反应平衡

酒精粗馏废液返回用作糖蜜稀释水,重新参与二次发酵是酒精生产废水治理减排的有效途径之一。但该项技术虽有国外的成功案件和国内的实验基础,但理论依据不足,人们心存疑虑,难以在实际生产中应用推广。为了消除人们的思想顾虑,早日实现该技术的应用推广。对酒精发酵系统的生化反应进行了分析,并利用平衡移动的观点,从理论上说明酒精粗馏废液回用后,不会对正常的酒精发酵产生不良影响。以期为该项技术的使用提供理论支持。     

紫外照射对大肠埃希氏菌质粒DNA影响的研究

本研究对大肠杆菌进行紫外照射诱变后,获得了通过其内部的SOS修复系统产生的突变菌株,采用异丙醇沉淀法对各组菌种进行质粒DNA提取.通过测定各组OD值,经过比较与分析得出了经紫外处理10min后的大肠杆菌质粒DNA浓度最高,为215ug/ml,其次为正常组的190ug/ml.经紫外照射30min后的大肠杆菌质粒DNA浓度最低,仅为65ug/ml.紫外处理时间与质粒DNA浓度整体呈现下降趋势.初步推测是由于大肠杆菌SOS修复系统的RecA蛋白促进了不完全同源的DNA序列之间的重组,产生大量的错配碱基,从而引起突变,进而影响到其质粒DNA的浓度.     

“酒驾”入罪法理探析

由醉酒驾驶引发的系列恶性交通事故震惊了全社会,强大的民意和社会舆论是醉酒驾驶刑法规范的立法契机。用刑法调整酒后驾驶机动车尤其是醉驾行为是有效保护公民的合法权益和社会公共利益,消除社会的恐慌心理的最佳途径。治理醉酒驾驶犯罪国外有丰富的经验和完备的立法,可资我国借鉴。探究醉酒驾驶刑法规制的依据十分必要,这种法学原理的分析将为立法机关正在进行的规范酒驾犯罪的立法提供理论支持。     

Association of physical fitness,body composition,cardiometabolic markers and adherence to the Mediterranean diet with bone mineral density in perimenopausal women. The FLAMENCO project

This study aimed to analyse the association of different components of physical fitness, body composition, cardiometabolic markers and the Mediterranean diet with bone mineral density (BMD) in perimenopausal women, and to test which of these components are independently associated with BMD. The sample comprised 197 perimenopausal women (52.6 ± 4.5 years). Physical fitness was assessed with the “Senior Fitness Test” battery and the handgrip strength and Bruce tests. Fat and lean mass and BMD were measured using dual-energy X-ray absorptiometry. We analysed the markers of metabolic syndrome, C-reactive protein, and components of the Mediterranean diet. Handgrip muscle strength (β = 0.212, P = 0.005), body weight (β = 0.244, P = 0.001), BMI (β = 0.180, P = 0.011) and lean mass (β = 0.379, P < 0.001) were positively associated with BMD. No associations were observed between cardiometabolic markers or the Mediterranean diet with BMD (all P > 0.05). When all relevant indicators of BMD were simultaneously considered, lean mass was the only 1 showing an independent association with BMD (β = 0.392, P < 0.001), explaining 14% of the BMD variability. In conclusion, muscle strength might be a marker of BMD in perimenopausal women. However, lean mass was the only factor independently associated with BMD. Future research to determine whether increasing lean mass through specific exercise-based interventions contributes to increasing BMD is warranted.     

离子色谱法同时分离测定三种麻黄碱类药物

用离子色谱法同时分离测定三种麻黄碱类药物.在Metrohm cation 1-2阳离子交换上,用2.0mmol/L HNO3和1%乙腈混合溶液作为流动相,在20分钟内同时分离测定了麻黄碱、伪麻黄碱和去甲麻黄碱三种药物.去甲麻黄碱在0.08μg/ml-40μg/ml浓度范围内与色谱峰面积成正比麻黄碱、伪麻黄碱在0.2μg/ml-40μg/ml浓度范围内与峰面积成线性关系,线性相关系数分别为0.9996,0.9999,0.9999.去甲麻黄碱的检出限为0.04μg/ml.麻黄碱及伪麻黄碱的检出限均为0.08μg/ml.     

还原青蒿素拆分外消旋醇的探索

通过还原青蒿素与外消旋醇进行化学反应,拆分得到左旋醇和右旋醇,且分离效果好。     

NPG,TAM及其二元体系固-固相变DSC测量

运用Ｆｒｅｅｍａｎ－Ｃａｒｒｏｌｌ法和ＡＢＳ法两种热分析动力学模型,利用差示扫描量热法（ＤＳＣ）测定新戊二醇（ＮＰＧ）、三羟甲基氨基甲烷（ＴＡＭ）及其二元体系的低温固－固相变ＤＳＣ曲线,求算固－固相变的表观活化能和反应级烽,探讨表观活化能随组成不同的变化规律。两种方法处理的结果一致。     

Ethnic Differences in Drinking Motives and Alcohol Use Among College Athletes

This study examined drinking motives, alcohol use, and alcohol‐related problems among White college athletes and college athletes of color (N = 113). Results indicated no differences in drinking motives between the 2 groups. White athletes reported higher levels of alcohol use, whereas athletes of color reported higher levels of alcohol‐related problems. Athletes of color with high levels of coping and conformity motives reported the highest level of alcohol‐related problems.     

古代中国的酒与饮酒

酒源于自然界,后来经过人类的加工而成,与社会生活紧密相连,从魏晋隋唐时人们普遍嗜酒可以看出各时代酒风的盛行。回顾酒的历程,它产生过消极作用,蕴含着深刻的治国安邦的道理。鉴于历史教训,统治者们采取了相应的禁酒政策。酒的利弊不是出于本身特性,而是出于人们理性与非理性的选择。     

乳酸菌的生理功能及在饲料发酵中的应用

乳酸菌具有促进营养物质的消化和吸收、降低血清胆固醇、调节肠道菌群平衡、激活机体免疫系统、改善食品风味和预防癌症等多方面的生理功能。利用益生乳酸菌发酵而成的饲料对促进动物的健康生长具有重要的实践意义,这种功能性发酵饲料近年在我国畜牧业中发展十分迅速,有着广阔的生产和应用前景。本文就近几年来关于乳酸菌的生理功能、益生菌发酵饲料的种类及乳酸菌发酵饲料在动物生产中的应用进行综述,并对其发展前景进行展望。