利用灶台余热的吸附式冰箱研究     

王生软  韩贤贵 《黄冈职业技术学院学报》2011,13(5):100-102

通过分析我国农村能源的利用情况,提出了一种利用灶台余热的吸附式冰箱,介绍了其工作原理,并进行了技术可行性分析。  相似文献   

低价中标的发展情况的分析——以赣州市为例     

高蔚  郭旭杰  刘辉 《科技广场》2012,(6):207-209

在当今中国的市场经济中,招投标活动已然成为一种很普遍的竞争方式,并且逐步走向完善。从2000年1月1日我国实施第一部《中华人民共和国招标投标法》以来,建筑市场的招投标活动正在沿着公开、公正、公平的方向健康发展,然而低价中标作为国际通行的评标原则,经历了许多不同的阶段。本文采用对比的方法对赣州市的低价评标方法的发展情况进行分析,展望赣州市评标方法的未来。  相似文献   

Association of Estrogen Receptor-α Gene &; Metallothionein-1 Gene Polymorphisms in Type 2 Diabetic Women of Andhra Pradesh     

Shilpa Reddy Ganasyam  Talluri Bhaskar Rao  Y. S. R. Murthy  Akka Jyothy  Madireddy Sujatha 《Indian journal of clinical biochemistry : IJCB》2012,27(1):69-73

Type 2 diabetes mellitus (DM) is a multifactorial disease where both genetic and environmental factors contribute to its pathogenesis. Estrogen plays an important role in type 2 DM pathogenesis. A number of polymorphisms have been reported in the estrogen receptor (ESR1), including the XbaI and PvuII restriction enzyme polymorphisms of ESR1,which may be involved in disease pathogenesis. Metallothioneins (MT) act as potent antioxidants against various oxidative damages. Very few studies have indicated the association between Estrogen Receptor-α, MT1 gene polymorphisms with type2 DM. A total of 100 type 2 diabetic women and 100 age, sex matched controls were recruited. Using the PCR based RFLP method, the PvuII and XbaI polymorphisms of ESR1 and in MT1A (rs8052394 and rs11076161) gene polymorphisms were analysed. The genotype distribution and frequency of mutated allele showed no significant differences between diabetic and non-diabetic groups in PvuII (χ2 = 2.443; P = 0.1181) or XbaI (χ2 = 1.789; P = 0.1812) and rs8052394 (χ2 = 1.154; P = 0.2840) or rs11076161 (χ2 = 0.4141; P = 0.5199), polymorphisms. This is the first Indian study to conclude that ESR1 and MT1 gene polymorphisms are not associated with increased susceptibility to type 2 diabetes in Indian women.  相似文献   

低频力学弛豫谱仪的原理及其改进   总被引：4，自引：2，他引：2  

沈中城 《苏州市职业大学学报》2004,15(4):61-63

力学弛豫引起内耗，内耗产生的内在因素是材料的结构特点和结构缺陷。通常的内耗仪，应为低频力学弛豫谱仪。文章对新研制成功的LMR——1型低频力学弛豫谱仪的原理、结构以及计算机控制软件作了概括介绍。  相似文献   

河流枯水极值分析与模型预测研究   总被引：1，自引：0，他引：1  

李秀云傅肃性李丽娟 《资源科学》2000,22(5):73-77

以我国西南地区澜沧江流域干支流为例,对其枯水特征与径流补给,径流年内变化及其枯水分布做了概要的分析,同时对其河流枯水进行了模型应用研究。通过枯水最小月流量的试验以及显示的随机性,采用了软次模型,利用了11个测站,27a∽31a不等的序列数据,开展了枯水预测计算,其结果多年负轮长为2.13（a）,即小于最小月流量多年平均值。这表明其枯水出现的历时周期短,因此,在对该河流开发时应予以调控,统筹规划。由上可知,运用轮次算法对河流枯水的极值分析与预测是－经济实用的研究方法。  相似文献   

Genome-wide CNV analysis reveals variants associated with high-altitude adaptation and meat traits in Qaidam cattle     

《Electronic Journal of Biotechnology》2021

BackgroundQaidam cattle are local breeds that habitats in northwest China. It has many excellent characteristics, such as high cold and roughage tolerance, low oxygen adaptability, and tender meat quality. Copy number variation (CNV) can induce phenotypic changes in animals by a variety of effects, and thus affects the biological functions of the animals. To explore the molecular mechanism of its adaptation to extreme cold weather and muscle fat development, the CNV variations in the genome of three Qaidam cattle were detected by whole-genome sequencing, in this study.ResultsA total of 16,743 CNVs and 9498 copy number variable regions (CNVRs) were obtained after the screening, which accounts for 2.18% of the bovine genome. The CNVR length detected ranged from 0.3 KB to 10.77 KB, with a total length of 58.17 MB and an average length of 6.12 KB/ CNVR. Through functional enrichment of CNVR related genes, LDHB, and ME1 genes were screened as the key genes for Qaidam cattle to adapt to the cold and low oxygen environments, whereas KIT and FGF18 genes might be related to the coat color and growth. In the CNVR overlapped with QTLs, variation in CAPN1 and CAST genes might be closely related to the tender meat quality of Qaidam cattle.ConclusionsTherefore, this study provides new genetic insights on the environmental adaptability and important economic traits of Qaidam cattle.How to cite: Guo S, Wu X, Pei J, et al. Genome-wide CNV analysis reveals variants associated with high-altitude adaptation and meat traits in Qaidam cattle. Electron J Biotechnol 2021;54. https://doi.org/10.1016/j.ejbt.2021.07.006  相似文献   

Simple Preparation of Nanoporous Honeycomb Film by Low Volatile Solvent     

ZANG Bing 《环球赛鸽科技》2015,(6)

[Abstract]In this paper, the traditional water-templates technology has been improved. We introduce a simple effective method to prepare honeycomb materials with nanopores by low volatile solvent.  相似文献   

大用户直购电对清洁发电和用电节能的影响探讨     

苏望 《环球赛鸽科技》2015,(21)

目前,随着我国电力市场改革的逐步深入,大用户直购电模式正在试点展开,但该模式尚存在管理办法不完善等问题,实施后可能对发电企业清洁发电及电力大用户电力节能产生一定的影响。本文分析了大用户直供电模式对发电侧、电网侧和用户侧产生的影响,尤其是大用户直购电模式将会对发电企业的清洁化改造和用能企业的节能化管理造成的影响。结果表明院大用户直供电模式可以有效降低电力用户用电成本,提高发电企业盈利能力,但尚需完成相关政策法规等保证大用户直供电模式实施后的节能减排工作。  相似文献   

“三桥运动疗法”治疗非特异性下腰痛的临床疗效观察     

程杰  周凌  苏全生 《成都体育学院学报》2015,(6):111-114

目的：：观察和评价“三桥运动疗法”治疗非特异性下腰痛的临床疗效。方法：选择成都体育学院附属体育医院2013年10月-2015年3月非特异性下腰痛患者60例,采用“三桥运动疗法”,观测治疗前、治疗后一月及三月的总腰椎前突角,骶骨倾斜角,视觉模拟评分法( VAS),功能障碍指数(ODI),健康调查简表(SF-36)评分变化,对治疗前后疗效进行评估。结果：所有患者均获得随访,“三桥运动疗法”治疗非特异性下腰痛治疗前与治疗后一月,治疗后一月与治疗后三月后相比较两组在总腰椎前凸角差,骶骨倾斜角,VAS,ODI上其差异均有统计学意义( P<0.05)。结论：“三桥运动疗法”治疗非特异性下腰痛临床疗效良好。  相似文献   

不同栽培方式和低温处理对龙牙百合生长发育的影响     

李润根  罗霞  曾巧灵 《宜春师专学报》2014,(12):101-103

以万载龙牙百合为试材,探讨了不同栽培方式及低温处理对其出苗、现蕾、开花的效应。结果表明：龙牙百合采用大棚栽培与露地栽培通过5-8℃低温处理30d以上,均可打破其休眠,调节其出苗、现蕾和开花时间;露地栽培低温处理时间越长（63d）开花时间越早;大棚栽培与露地栽培现蕾-开花时间差异极显著;龙牙百合中片品系与柳片品系现蕾-开花时间差异显著。试验可为龙牙百合杂交育种花期调控提供参考;低温处理可提早百合出苗时间、延长植株生育期,可能为提高食用百合产量提供新途径。  相似文献