渐开线圆柱齿轮精度的计算机辅助设计     

姜明灿  熊裕文 《鄂州大学学报》2003,10(4):49-51

该文介绍渐开线圆柱齿轮精度的计算机辅助设计及计算的有关问题，对提高齿轮精度设计的准确度及其合理性有一定的实际指导意义。  相似文献   

常绿植物SOD活性与植物耐寒力相关性的研究     

柳林  王艳 《安康学院学报》2001,13(2):47-49,91

本实验研究了6种常绿植物越冬期间,在植株正常生长情况下,各因子共同作用对常绿植物SOD活性的影响。结果表明：六种常绿植物越冬期间SOD活性变化曲线均呈“M”状,并不随环境温度降低而持续下降;常绿植物抗寒力与植物内源SOD活性水平密切相关,呈种间特异性。  相似文献   

双机容错在医院信息系统安全中的应用     

罗颢 《中国科技信息》2005,(16):30

双机容错是计算机应用系统稳定、可靠、有效、持续运行的重要保证;为确保医院信息系统的正常运转,防止数据丢失,服务器采用双机容错是必要的。  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   

论宗教改革与资本主义民主精神     

邱程 《安庆师范学院学报(社会科学版)》2011,30(8):92-96

宗教改革是继文艺复兴之后又一次思想解放运动,宗教改革的年代是欧洲资产阶级力量上升的时期,它的发展对西欧社会进步产生了巨大的推动作用,引发了思想观念的变革,为社会转型奠定了思想基础。从根本上说,宗教改革是一场在宗教外衣掩护下,新兴资产阶级反对封建统治的政治变革,推动了资本主义民主的发展。  相似文献   

“A就A”复说格式研究     

郭初建 《湖南第一师范学报》2011,11(2):96-99

有多住学者对“A就A”复说格式进行了分析和研究,取得了许多的成果,但对此类格式的分析远没有分析透,存在概念模糊、结论不一的现象。“A就A”的格式意义要分层次论证,分为句法结构层面上的“确认认可义”和语境层面上的“决断容忍”义。  相似文献   

由周作人“文学的自由”与“文艺的宽容”引发的思考     

郝艳萍 《楚雄师范学院学报》2011,26(2):7-11

曾高举"人的文学"的大旗、"五四"时期走在时代前列的周作人,在20、30年代却渐从新文学主潮的带头人变为他所说的"自由的思想者",主张"文学的自由"与"文艺的宽容"。但他的理论与行为成矛盾状态,于是引发了笔者对他所提出的这两个理论所涉及到的一些问题的思考:功利主义文学观与非功利主义文学观能否并存,文学批评是否应该讲究"宽容"。  相似文献   

Influence of organization learning on innovation output in manufacturing firms in Kenya     

《国际创新研究学报(英文)》2020,4(1):16-26

Knowledge entrepreneurship is increasingly becoming important in driving innovation for high levels of competitiveness. The purpose of this study was to investigate the relationship between Organization Learning (OL) and Innovation Output (IO) for improved performance in manufacturing firms in Kenya. The theoretical underpinnings on this study are the Schumpeter’s (1934) innovation theory of and the Gleick (1987) complexity theory. The methodology used was mixed method research because it provides a more holistic understanding of a thematic area. The research design that was used is cross-sectional design because it allows for making observations on different characteristics that exist within a group at a particular time. The target population was manufacturing firms across the country. Multi-stage sampling strategy was used to sample 303 respondents from 101 firms. Primary and secondary data were used to collect both qualitative and quantitative data. The questionnaire, interview schedule and a checklist of key informants were used to collect data. Content validity was used to ascertain the credibility of the research procedure and internal consistency technique was used to test for reliability. Correlation and linear regression were used to determine the relationship between OL and IO. Work disruptions were avoided by making prior arrangements and appointments. The findings indicate that OL has a significant influence on IO. It is recommended that lifelong learning, management support and risk tolerance should be encouraged to improve creativity. High creativity is important in raising the capacity to integrate internal and external knowledge for greater levels of IO. Further research should be carried out to find how customers and suppliers information can be utilized to enriched OL.  相似文献   

Responses to oral glucose challenge differ by physical activity volume and intensity: A pilot study     

Trevor N. Simper  Cecile Morris  Anthony Lynn  Ciara O'Hagan  Karen Kilner 《运动与健康科学(英文)》2020,9(6):645-650

BackgroundOne-hour postprandial hyperglycemia is associated with increased risk of type 2 diabetes and cardiovascular disease. Physical activity (PA) has short-term beneficial effects on post-meal glucose response. This study compared the oral glucose tolerance test results of 3 groups of people with habitually different levels of PA.MethodsThirty-one adults without diabetes (age 25.9 ± 6.6 years; body mass index 23.8 ± 3.8 kg/m²; mean ± SD) were recruited and divided into 3 groups based on self-reported PA volume and intensity: low activity < 30 min/day of moderate-intensity activity (n = 11), moderately active ≥ 30 min/day of moderate-intensity PA (n = 10), and very active ≥ 60 min/day of PA at high intensity (n = 10). Participants completed an oral glucose tolerance test (50 g glucose) with capillary blood samples obtained at baseline, 15 min, 30 min, 45 min, 60 min, 90 min, and 120 min post-ingestion.ResultsThere were no significant differences between groups for age or body fat percentage or glycated hemoglobin (p > 0.05). The groups were significantly different in terms of baseline glucose level (p = 0.003) and, marginally, for gender (p = 0.053) and BMI (p = 0.050). There was a statistically significant effect of PA on the 1-h postprandial glucose results (p = 0.029), with differences between very active and low activity groups (p = 0.008) but not between the moderately active and low activity groups (p = 0.360), even when baseline glucose level and gender differences were accounted for. For incremental area under the curve there was no significant effect of activity group once gender and body fat percentage had been accounted for (p = 0.401). Those in the low activity group took 15 min longer to reach peak glucose level than those in the very active group (p = 0.012).ConclusionThe results suggest that high levels of PA have a beneficial effect on postprandial blood glucose profiles when compared to low and moderate levels of activity.  相似文献   

云科-18选3的孕穗期耐冷性评价及遗传研究   总被引：1，自引：0，他引：1  

李楠 《河池学院学报》2007,27(2):72-76

在湛江2004和2005年度,于自然条件下对237个水稻材料进行大田分期播种试验和人工气候箱定温试验。并对所有这些材料进行孕穗期耐冷性评价,其中来源于云南农科院并经单株选择的云科-18选3能耐受12℃的低温,是所有供试材料中最为耐冷的。用云科-18选3作母本与不耐冷材料R6067作父本杂交,以低温条件下的自交结实率作为孕穗期的耐冷性评价指标,采用王建康等分析软件,研究表明云科-18选3孕穗期耐冷性受一对主效基因控制。  相似文献