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1.
目的:了解新疆石河子市居民糖尿病的患病率及其影响因素。方法采用整群抽样的方法,对石河子市24及4社区35岁及以上居民共1616人进行问卷、体格检查和血糖检测,用Х^2检验和logistic回归方法进行分析。结果:糖尿病患病率为10.8%,男女患病率分别为13.0%和9.2%(Х^2=5.95,P〈0.05);空腹血糖损害检出率为6.37%,男女分别为6.67%和6.17%(P〉0.05)。logistic回归分析结果显示,年龄、糖尿病家族史、腰围和血压水平与糖尿病相关。结论:石河子市调查人群糖尿病患病率处于全国较高水平,应重视加强综合防治。  相似文献   

2.
目的:评价国产坎地沙坦酯片治疗轻、中度原发性高血压的疗效和安全性。方法:采用随机双盲、双模拟、阳性药物平行对照试验设计,对41例高血压病患者随机给予坎地沙坦醋片(4~8mg/次,1次/d,)或伊贝沙坦片(150~300mg/次,1次/d);单药治疗4周后未使血压正常(〈140/90mmHg)(1mmHg=0.133kPa)者加用氢氯噻嗪片(12.5mg/次,1次/d),疗程8周。结果:坎地沙坦酯片试验组和伊贝沙坦片对照组的单药治疗总有效率分别为77.8%和72.7%,加用氢氯噻嗪后两组的总有效率分别为100.0%和90.9%。平均坐位血压试验组153.2/96.3mmHg降至126.8/79.4mmHg,对照组由151.0/96.0mmHg降至127.9/81.2mmHg。两组不良反应发生率低而且轻微,依从性近似分别为94.7%和95.5%。结论:国产坎地沙坦酯片治疗轻、中度高血压安全有效,并有显著的量效关系,与氢氯噻嗪合用可进一步提高降压疗效,其降压效果和不良反应与伊贝沙坦片相似。  相似文献   

3.
本文根据冷室式压铸机整体压射室的特殊工况L,突出铍青铜材料的特殊性能,并对其成分和生产工艺等技术原理进行专项研究。通过专门研究其配方和工艺所生产的铍青铜压铸冲头其性能为:抗拉强度:70k/mm^2-80kg/mm^2、维氏硬度Hv(30kg):21kg/mm^2-24kg/mm^2、导电率≥50%、高温软化温度ST:550℃、延伸率8≥12%(Be:〉0.5%)。其使用效果达到进口同类产品水平。  相似文献   

4.
张培云 《遵义科技》2007,35(1):28-30
近年来,随着种植业结构的调整,蔬菜栽培面积逐年扩大,为了进一步提高土地利用率,增加单位面积产值,儿菜-西瓜-大头菜是遵义县新舟镇农民经济效益较好的栽培模式之一,一般儿菜产量3000kg/667m^2,单价0.4元/kg,产值1200元/667m^2:西瓜产量3500kg/667m^2,单价0.7元/kg,产值2450元/667m^2;大头菜产量4000kg/667m^2(连叶子整株称重),单价0.24元/kg,产值960元/667m^2,共计年产值4610元/667m^2。现将搭配方式及关键栽培技术总结如下:  相似文献   

5.
目的:评估超重与血脂异常及其相互关系,指导超重与血脂异常防治。方法:调查大理市在职和离、退休干部职工3 870人,测量身高和体重,计算相应的BMI;检测空腹血清总胆固醇和甘油三酯;按性别、BMI分组,统计各组血脂异常(高TC血症、高TG血症)患病率。结果:高TC血症、高TG血症患病率在BMI≥24组分别为11.75%和37.20%,与BMI〈24组(6.14%和14.73%)比较,超重组患病率分别是非超重组的1.91倍和2.53倍,差异具有统计学意义。结论:超重者血脂异常患病率较高,是血脂异常监测和防治的重点人群。  相似文献   

6.
兰州铁路局疾病预防控制所于2010年4月18日至22日对金昌采石厂49名采石工进行职业健康体检。结果:49人测量血压,其中高血压人数15人,患病率为30.61%,男性患病率为43.33%,女性患病率为10.53%,男女之间(X^2=4.451,P〈0.05)有显著性差异。乙肝表面抗原阳性3人,阳性率为6.12%,都为男...  相似文献   

7.
肥胖与2型糖尿病的相关性探讨   总被引:1,自引:0,他引:1  
目的通过研究肥胖与2型糖尿病的相关性,使肥胖病人引起重视,改变生活方式,做到2型糖尿病的一级预防。方法2005年对我市5个单位1000人调查身高 体重 测血糖,按BMI值分三组:(1)正常组BMI≤24,(2)超重组24〈BMI〈28;(3)肥胖组BmI≥28。不同率之间的比较X2检验,不同组之间均值用t检验。结果肥胖与2型糖尿病患病率成正相关,控制肥胖降低体质数,有利于防止肥胖向糖尿病的发展。  相似文献   

8.
研究了鱼类养殖中残留在鱼体内的欧索林酸的高效液相色谱(HPLC)检测方法.样品中欧索林酸在酸性条件下用乙腈提取,采用液液分配方法净化除去共存提取干扰物质后,用带有荧光检测器的高效液相色谱仪检测.方法的检测限为1.0μg/kg,线性范围2.5—50.0μg/L,相关系数r=0.9995,添加1.0,6.0和10.0μg/kg浓度水平,平均回收率分别为94.0%、83.7%和82.6%,相对标准偏差分别为5.1%、5.8%和2.5%.该方法具有高灵敏度、简单、快速和低成本等特点,适用于检验机构检测和食品加工企业产品控制.  相似文献   

9.
罗光琼  赵仁全  李琳 《科技信息》2009,(20):I0005-I0007
在同一生态条件不同地力的两个试点进行了油菜“3414”试验,一个试点的N、P肥效应可用二元二次方程进行较好的拟合,另一个试点的N施肥效应可用一元二次方程进行较好的拟合,P施肥效应可用一元一次方程进行较好的拟合,并利用微分法测算出了2个试点的最佳施肥量。结合土壤测试结果测算出:全氮、水解氮、有效磷和速效钾的校正系数分别在O.0150-0.0276、0223-0.371、0306-1298和0.367-0.838之间,且均随土壤养分含量增加而降低。施用尿素、普钙和氯化钾的回归方程分别为边际产量(kg/667m^2)=14.54-1.34×施氮量(kgN/667m^2)、边际产量(kg/667m^2)=63.82-1.28×有效磷(mgP/kg)-475×(kgP2O5/667m^2)和边际产量(kg/667m^2)=4747-038×速效钾(mgK/kg)-1.31×施钾肥量(kgK2O/667m^2)。  相似文献   

10.
选用脱毒马铃薯会-2号,分别用不同播种量(0.75kg/6.67m^2,1.00kg/6.67m^2,1.25kg/6.67m^2,1.50kg/6.67m^2,2.00kg/6.67m^2,2.50kg/667m^2)进行稻田免耕稻草覆盖栽培试验研究。结果表明,在赤水地区既能获得高产,又能获得最佳经济效益,播种量范围在125-150kg/667m^2之间。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

13.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

14.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。  相似文献   

18.
There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.  相似文献   

19.
20.
The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to  相似文献   

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