Blood zinc protoporphyrin, serum total protein, and total cholesterol levels in automobile workshop workers in relation to lead toxicity: Our experience     

Suneesh Kumar Pachathundikandi  Earaly Thomas Varghese 《Indian journal of clinical biochemistry : IJCB》2006,21(2):114-117

Blood zinc protoporphyrin (ZPP), serum total protein (TP), and total cholesterol (TC) levels in automobile workshop workers in relation to lead toxicity were analysed. In the present study, automobile workshop workers (healthy male workers at an age between 28 and 35 from four major automobile workshops in Kottayam, Kerala State, India) and the control (male healthy adults at an age between 28 and 35 residing at Aymanam, a distant village at Kottayam District, Kerala having reduced or no chance of lead exposure) displayed significant difference in blood lead (BPb) and blood ZZP (BZPP) level. The mean value of BPb in automobile workshop workers was 15.76±0.33 μg/dl, while in the control it was 8.20±0.15 μg/dl. In automobile workshop workers, the mean value of BZPP was 34.2±0.62 μg/dl. The control group exhibited a mean of 11.5±0.22 μg/dl. Automobile workshop workers exhibited significant increase in BZPP was corresponding to the increase in BPb level. The total protein levels estimated in automobile workshop workers showed significant decrease compared to control individuals, but was within the reference range of healthy individuals. The mean value of TP level in automobile workshop workers and control was 6.9±0.13 g/dl and 7.71±0.18 g/dl, respectively. There was no significant difference in blood haemoglobin (BHb) level among the automobile workshop workers and control. The serum TC level in automobile workshop workers showed significant decrease compared to the control individuals, but was with in the reference range of healthy individuals. The mean level of serum TC in automobile workshop workers was 162.00±3.44 mg/dl and the same in control was 172.86±4.32 mg/dl. The present study affirms occupational lead toxicity in automobile workshop workers and its effect on serum protein and cholesterol levels.  相似文献   

基于低碳经济视角的我国碳排放强度影响因素分析     

路正南  郝文丽  杨雪莲 《科技管理研究》2016,(3):240-245

首次将中间投入强度及投入结构引入到碳排放强度影响因素研究中,选用2000年、2002年、2005年、2007年及2010年的数据,运用LMDI因素分解方法将我国碳排放强度的影响因素分解为能源结构效应、能源投入替代率效应、投入结构效应和中间投入强度效应。结果表明,能源投入替代率加快碳排放强度的降低,中间投入强度和投入结构抑制碳排放强度的降低,能源结构对碳排放强度的降低作用不明显。从因素总效应来看,除了2002—2005年间各影响因素整体抑制了碳强度的降低外,其他各区段间因素效应之和加速碳强度的降低。因此,调整投入结构、提高能源效率成为碳减排的当务之急。  相似文献   

QTL analysis for some quantitative traits in bread wheat     

Pushpendra KG  Harindra SB  Pawan LK  Neeraj K  Ajay K  Reyazul RM  Amita M  Jitendra K 《Journal of Zhejiang University. Science. B》2007,8(11):807-814

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) sug- gested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.  相似文献   

Decolorization Kinetics of Sludge Protein Solution by ~（60）Coγ-Ray Irradiation/H_2O_2 Oxidation     

相玉琳  张卫江  郑浩 《天津大学学报(英文版)》2011,17(1):45-50

In order to carry out decolorization, sludge protein solution, a dark brown close to black solution from activated sludge, was subjected to ⁶⁰Co γ-ray irradiation in the presence of hydrogen peroxide. UV/Vis spectrophotometric method was used to investigate the effect of H2O2 on the coloration apparent kinetics and rate constants of sludge protein solution under γ-ray irradiation. In addition, the effects of irradiation dose, initial sludge protein solution concentration, and pH value on the decolorization efficiency of sludge protein solution were studied. Results showed that the decolorization apparent kinetics of sludge protein solution was a first-order reaction. The solution decolorization percentage increased with the increase of irradiation dose or the decrease of initial sludge protein solution concentration. The examination results of pH value showed that the sludge protein solution could be more efficiently decolorized in alkaline media than in acid media. Moreover, sensory evaluation and foamability analysis indicated that irradiated samples under H2O2 oxidation showed better sensory score and foamability.  相似文献   

节能型实验用空调制冷机水系统     

袁建新  周斌  彭维  吴梅花  齐典伟 《实验室研究与探索》2011,30(1)

提出了节能型实验用空调制冷机水系统。充分利用实验装置的冷凝热、制冷量等自身能源,有效地解决了原有实验用空调制冷机水系统存在的问题,同时还减少了自来水的消耗量,并以实验证明了节能型实验用空调制冷机水系统的优点。  相似文献   

人工锌指核酸酶的电子设计与结构模拟     

张勇  蒋泓  邓廷贤  粟文俊  杨莉珊  唐冬生 《实验室研究与探索》2011,30(10)

以电子设计用于猪的多位点基因打靶的人工锌指核酸酶为例,探索如何电子设计优化理想的人工锌指核酸酶,以减少人工锌指核酸酶的毒性。采用OPEN电子设计方法,生物信息学方法的预测分析ZFP的立体结构,设计优化合适的连接体和间隔体组合,并通过突变优化Fok I异源二聚体。采用OPEN法设计三指ZF序列,并连接为ZFP序列,设计出长度为6 bp且富含AT碱基的spacer,加上长度为4个氨基酸残基的inter-domain linker,连接FokⅠ切割结构域双突变子异源二聚体,并通过各种软件工具对ZFN的空间结构进行模拟预测,所设计得到的ZFN的有效率超过50%。探索获得电子设计理想ZFN的方案,即特异性结合DNA的锌指蛋白、最佳的linker和spacer的长度与组合以及优化的特异性切割的Fok I异源二聚体切割结构域。  相似文献   

太阳能创新实验室建设与实践   总被引：2，自引：1，他引：1  

高惠滨  潘红兵  周进  王炜 《实验室研究与探索》2011,30(2)

建设大学生创新实验室的主要目的是培养学生实践能力和创新能力,提高学生的综合素质。结合我校建设太阳能创新实验室的经验,对建设创新实验室的意义、具体工作和思路做一些介绍和探讨。  相似文献   

金属光电效应逸出功简要分析     

唐亚陆  胡光  张俊 《宜春学院学报》2011,33(8):35-36

大学物理教材中对光电效应下的定义不准确,对光电子是否有最大初动能存在两派观点,通过对金属逸出功的分析,表明光电子存在最大初动能。  相似文献   

常用冷库结构性能分析     

薛梅  王爱芹  李树林  晁风芹 《山东商业职业技术学院学报》2011,11(3):89-93

针对常用的冷库结构,从维护结构的传热量、蒸汽渗透率以及冷库投资运行费用等方面进行分析比较,从而找出低造价、高性能、低能耗的库体结构。  相似文献   

模拟高原水下爆炸特征参数的实验研究     

黄麟  张立  熊苏  李雪交  邱明灿 《淮南职业技术学院学报》2011,(6):19-22

高原地区进行的水下爆破工程,因水体表面气压随海拔的升高而线性降低,其装药爆炸后的特征参数是否发生变化,对爆破施工有重要意义;采用密闭的高压爆炸容器,模拟高原气压条件,对雷管水下爆炸参数进行了实验研究,研究结果表明：在海拔0---4500m范围内随着气压降低,冲击波峰值压力大小与气压无关。冲击波衰减时间却有一定增长,导致比冲击波能微小增大;气泡脉动周期按二阶多项式规律显著增大,仍由于气压随海拔升高丽变小,装药深度处的总静水压力随之降低,使比气泡能微量减小,而爆炸总能量基本不变。  相似文献