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1.
M. Maneesh Sanjiba Dutta Amit Chakrabarti D M Vasudevan 《Indian journal of clinical biochemistry : IJCB》2007,22(1):138-142
Infertility is well-established harmful effect in chronic alcoholism and so far, there is no effective treatment for this
condition. The study was conducted to determine the effects of alpha tocopherol on ethanol induced testicular injuries in
male albino rats of Wistar strain. Five groups (n=6) of animals were used. Group I served as control. Group II received daily
1.6g ethanol/kg body weight/day for 4 weeks orally. Group III received 1.6g ethanol+80mg alpha tocopherol/kg body weight/day
for four weeks orally. Group IV received 1.6g ethanol/kg body weight for/day 4 weeks and followed by 80mg alpha tocopherol/kg
body weight/day for four weeks orally. Group V received 1.6g ethanol/kg body weight/day orally for 4 weeks, followed by 4
weeks abstinence. Twently-four hours after the last treatment the rats were sacrificed using anesthetic ether. Testes were
removed and used for the estimation of extent of lipid peroxidation and tissue levels of antioxidants and steroidogenic enzymes.
Alpha tocopherol treatment increased the activities of testicularΔ
5, 3β-HSD. Moreover, the treatment was also associated with significant decrease in testicular oxidative stress. Ethanol-induced
oxidative stress and decreased steroidogenesis can be reversed by treatment with alpha tocopherol. 相似文献
2.
梁福 《张家口职业技术学院学报》2001,14(4):48-50
从理论联系实际的角度介绍图像处理软件PhotoShop中蒙版、通道和Alpha通道的概念,并且通过举例说明其具体用法. 相似文献
3.
Matthew B. Hoy 《Medical reference services quarterly》2013,32(1):67-74
On May 18, 2009, British computer scientist Stephen Wolfram officially launched a new search product called Wolfram|Alpha (WA). This launch was preceded by months of speculation and hype online about exactly what WA would be and how it would compare to Google and other search engines. This article will explore the basic features of WA, show some example queries and results, and discuss the usefulness and limitations of this new tool. 相似文献
4.
Supriya Gupta Sarika Arora S. S. Trivedi Ritu Singh 《Indian journal of clinical biochemistry : IJCB》2009,24(2):150-154
Neural tube defects are congenital structural abnormalities of the brain and vertebral column resulting from improper or non-timely
closure of the neural tube. Prevalence of neural tube defects is reported to be higher among women with diabetes mellitus
and obesity. This study was designed to investigate the relation between the presence of dyslipidemia in antenatal patients
and the risk of fetal neural tube defects. The present study was an observational, cross-sectional study involving 129 pregnant
women in 16 to 18 weeks gestation period. Of these, 80 women had normal pregnancies and 49 were clinically high-risk cases
for neural tube defects. Fasting blood samples were analyzed for blood sugar and lipid profile by enzymatic assay and alpha-fetoprotein
levels using Enzyme Immunoassay. Alpha-fetoprotein (AFP) values were converted to Multiples of Median (MoM) appropriate for
the gestational age. Based on AFP values, women were labeled as screen negative (AFP <2 MoM, n= 102) and screen positive (AFP
> 2 MoM, n =27). Screen positive women were further evaluated by ultrasound and 21 women were found to carry a neural tube
defects positive pregnancy. Statistical analysis was done on SPSS software. Body weight of the women showed a significant
positive correlation with serum triglycerides, plasma sugar and AFP MoM values. A significant difference was observed in serum
cholesterol levels (p= 0.038), triglycerides (p=0.001) and plasma sugar levels (p=0.002) between normal women and those with
neural tube defects positive pregnancy. The Odds ratio for neural tube defects risk in dyslipidemic cases was 24.23 (CI 4.73
− 148.60) with a relative risk of 12.12. Dyslipidemia especially hypertriglyceridemia was found to be significantly associated
with fetal neural tube defects. 相似文献
5.
隧道窑是目前国内化学品α氧化铝普遍使用的煅烧窑。本文根据国内化学品α氧化铝行业中较先进的煅烧工艺,结合我厂112m隧道窑,在通过全窑热平衡计算的基础上,通过生产实践从影响能耗的各方面分析,摸索隧道窑煅烧氧化铝的节能途径和措施,最终达到产品单耗节能7%以上的效果。 相似文献
6.
影响中国基金短期业绩的市场因子分析 总被引：4，自引：0，他引：4
通常认为基金业绩受市场风险因子影响 ,因而在评价基金业绩时也使用市场风险因子分析法 ,其中较为流行的是Jensen指数法 ,但本文使用Jensen指数法对 1999年 6月至 2 0 0 0年 12月的投资基金进行回归后发现Jensen指数法回归结果并不显著。本文转而使用另一种市场因子分析法———Fama&French的“三因子模型”来进行基金业绩评估 ,结果发现这个模型对我国基金收益率的解释能力也很低 ,说明影响中国基金业绩的市场风险因子不是 β值、HML、SML。本文对两个模型在我国基金评估上的失败提出了解释 ,并利用Hendricks、Dar ryll、Patel、Zeckhauser、Russ的研究结果对回归方程的结构进行了修正 ,使其对基金收益率的解释能力大大增强。改进之后的方程结构表明 :影响中国基金业绩的市场因子是基金业绩自身的持续性 ,部分优秀基金业绩受自身成长性影响。 相似文献
7.
Duane Knudson 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(1):96-104
Errors in statistical analysis of multiple dependent variables and in documenting the size of effects are common in the scientific and biomechanical literature. In this paper, I review these errors and several solutions that can improve the validity of sports biomechanics research reports. Studies examining multiple dependent variables should either control for the inflation of Type I errors (e.g. Holm's procedure) during multiple comparisons or use multivariate analysis of variance to focus on the structure and interaction of the dependent variables. When statistically significant differences are observed, research reports should provide confidence limits or effect sizes to document the size of the effects. Authors of sports biomechanics research reports are encouraged to analyse and present their data accounting for the experiment-wise Type I error rate, as well as reporting data documenting the size or practical significance of effects reaching their standard of statistical significance. 相似文献
8.
9.
Maya Roche V. P. Arun Kumar S. M. Ibrahim K. Nalini 《Indian journal of clinical biochemistry : IJCB》2008,23(4):352-355
Antitryptic, antichymotryptic and alpha 2- macroglobulin activities were measured in sera of normal nonpregnant and normal
pregnant women and women with tubal ectopic pregnancy and molar pregnancies in the first 5 to 7 weeks of pregnancy calculated
from the last menstrual period. While alpha 2-macroglobulin decreased in early normal pregnancy compared to nonpregnant state
(p<0.001), in ectopic and molar pregnancies there was an increase in alpha 2- macroglobulin activity (p < 0.001), as compared
to nonpregnant and normal pregnant women. Antitryptic activity did not increase in normal and ectopic pregnancy, however was
increased in molar pregnancy (p < 0.01). Antichymotryptic activities did not show a change either in normal pregnancy or in
cases of ectopic and molar pregnancy. Drop in alpha 2- macroglobulin activity to near normal levels in ectopic, 6 weeks post
surgery, correlated well with the decrease in β-hCG. However, in molar pregnancy, alpha 2- macroglobulin remained elevated
even when the β-hCG levels in serum returned to zero 10 weeks after surgery. The studies suggest a major role for circulating
proteinase inhibitors especially alpha 2-macroglobulin in regulating proteinase activity in normal, ectopic and molar pregnancy. 相似文献
10.
ABSTRACTExercise at different cadences might serve as potential stimulus for functional adaptations of the brain, because cortical activation is sensitive to frequency of movement. Therefore, we investigated the effects of high (HCT) and low cadence training (LCT) on brain cortical activity during exercise as well as endurance performance.Cyclists were randomly assigned to low and high cadence training. Over the 4-week training period, participants performed 4 h of basic endurance training as well as four additional cadence-specific exercise sessions, 60 min weekly. At baseline and after 4 weeks, participants completed an incremental exercise test with spirometry and exercise at constant load with registration of electroencephalogram (EEG).Compared with LCT, a greater increase of frontal alpha/beta ratio was confirmed in HCT. This was based on a lower level of beta activity during exercise. Both groups showed similar improvements in maximal oxygen consumption and power at the individual anaerobic threshold.Whereas HCT and LCT elicit similar benefits on aerobic performance, cycling at high pedalling frequencies enables participants to perform an exercise bout with less cortical activation. 相似文献