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Through the design of AGP-test equipments and methods which could simulate the impact of input of exogenous nutrients on eutrophication, the evolution of algae and aquatic species extinction process in Miyun Reservoir under different environmental and nutritional conditions are simulated. Then the ratio growth rate in the three simulation stages are simulated and analyzed combining the numerical analysis software MATLAB 7.0. At last, the conclusion that in the three designed stage, the total phosphorus threshold which leads to a water bloom in Miyun is respctively 0.053mg/L, 0.062mg/L, 0.064 mg/L is educed. Based on the regression relationship of total phosphorus,chlorophyll-a, total nitrogen, and the transparency,we compartmentalized the evaluation standard level of eutrophication in Miyun Reservoir.
通过设计模拟外源输入对富营养化作用的AGP试验装置和方法,模拟了不同环境条件、营养条件下密云水库优势藻种演变和富营养化过程,结合使用MATLAB 7.0数值分析软件,对3期模拟时段的比增长率进行拟合分析,得出3期设计阶段密云富营养化发生的总磷阈值为0.053mg/L、0.062 mg/L、0.064 mg/L,再根据总磷与叶绿素a、总氮、透明度之间的回归关系,划分了密云水库富营养化的评价标准级别。
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Analysis results on townships and villages general statuses showed township health center and village clinic are the major health care facilities in rural poor areas. The number of staff in 36 THCs and 104 VCs were a little lower than the national average. In township health centers, 59. 9% staff are with primary or without any professional titles and 35. 9% of the total staff have no professional degrees. The average gross value of fixed assets per THC is 186000 yuan, among which special equipment values 41000 yuan. Among professional buildings 43. 3% of total area were dangerous. Only one THC can provide emergent service. 47. 2% THCs be able to diagnose and deal with common emergent stomachache. The provision of health services was lower than average level of national rural areas. Frontier Model analysis showed regression coefficients of total outpatient emergency service, total inpatients, average personnel income, number of total staff, number of doctors and technical index were all larger and positive. It meant that these variables would contribute more to the cost-frontier, and their increase would cause the total health cost rising. So increasing health service provision, improving service quality and functions of health facilities may be the best ways to increase efficiency of these facilities. Also the model showed THC inefficiency eu was 1. 68, which means 40% of the cost wasted. Apart from internal and external factors, residents'health care utilization deficiency and inequity is one of major factors causing inefficiency eu.
乡、村基本情况结果表明,农村贫困地区乡卫生院和村卫生室是农民就近就医的主要场所;36所乡卫生院以及104所村卫生室的人员数量,略低于全国同期农村平均水平;在乡卫生院中,初级职称和无职称者的比例占59.9%,无专业学历者占35.9%;平均每院固定资产总值18.6万元,其中专用设备4.1万元,业务用房中危房面积占43.3%;36所卫生院中,具备急救条件的只有1所,能诊断和处理常见急腹症的占47.2%;卫生服务提供量均低于全国农村平均水平;Frontier模型方法显示,总门诊人次、总出院人次、平均人员工资、人员总数、医生数和技术指数等指标的回归系数较大,且均为正数,即这些变量对"前沿"成本的贡献较大,其正向变化均会带来卫生服务总成本的增加,表明增加卫生服务提供量,提高质量以及完善机构服务功能,是提高乡卫生机构效率的有效途径;同时Frontier模型结果显示,卫生院的低效率〓为1.68,经换算即40%的成本处于浪费状态;影响乡卫生院低效率〓的因素有外部和内部的,而需方卫生服务不公平及利用不足是其主要因素之一。
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objective to study the correlation among psychosomatic health factors,depression,anxiety and sleep status in college students,to analyze influence factors in sleep status.methods with questionnaire opened in-vestigation,200college students were evaluated using cornell medical index,self-rating depression,self-rating anxiety scaleand pittsburgh sleep quality index.stepwise regression analysis was used.re-sults total score of sds was35.55±7.8,and sas was0.48±0.9.each score of cmi was higher than normal range,the highest was digestion system,next was respiration system,then,fatigue,eyes and ears,anxiety,sensitivity,tension,maladjustment in turn.total average score of psqi was6.32±3.6,ordinary sleep were115cases(57.5%),good and bad sleep were42(21%)and43(21.5%)cases respectively.influence factors in total score of psqi were sas,cmi,respiration system,anxiety,past healthy,digestion system,fatigue,sensitivity,sds and malad-justment in turn,using stepwise regression analysis,total score of psqi as dependent variable,each factor score of cmi,total score of sds and sas as independent variables.conclusion problems of psychosomatic health,anxiety and depression could both lead to sleep disorder.
目的 研究在校大学生心身健康因素及抑郁焦虑等与睡眠状况的相关性,并对影响睡眠状况的有关因素进行分析。方法采用问卷式的开放性研究,对在校的200名大学生进行康奈尔心身健康问卷、自评抑郁量表、焦虑自评量表和匹兹堡睡眠质量量表的测定,采用逐步回归分析方法。结果 sds总分为35.55±7.8、sas总分为0.48±0.9,cmi评分:消化系统最为严重评分为2.52,其次为呼吸系统、疲劳感、眼和耳、焦虑、敏感、紧张、不适应等,评分均高于正常常模。psqi总均分为6.32±3.6,一般睡眠有115例占57.5%,睡眠质量较好42例占21.0%,睡眠质量较差43例占21.5%。评估对睡眠状况的影响程度,以psqi总分为因变量,选择cmi各因子分和sds、sas总分作为自变量,进行多因素逐步回归分析,进入方程的因素依据标准化偏回归系数,影响psqi总分的因素依次为sas总分、cmi总分、呼吸系统、焦虑、既往健康、消化系统、疲劳感、敏感、sds总分、不适应(f=226.8;p.01;r=0.73)。结论心身健康问题和焦虑抑郁可导致睡眠障碍。
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Proceed with total cost analysis of the logistics, find out the relation between total cost of the logistics and various kinds of influence factors and impact on total cost of the logistics of administrative decision of the logistics.
从物流总成本分析入手,找出物流总成本与各种影响因素的关系和物流管理决策对物流总成本的影响。
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The probes of CHS, PHYA, COP1, CIP7 and HY5 genes were synthesized by total RNA extracted from the cortex tissue of tuberous root of turnip, the probes of PAL and CHI were synthesized by total RNA extracted from the petal tissue of Eustoma, and the probes of AS were synthesized by total RNA extracted from the fruit tissue of strawberry.
采用的探针中,PHYA、COP1、CIP7、HY5及CHS基因的探针是利用芜菁的肉质根周皮层的总RNA合成,PAL和CHI基因的探针是利用草原龙胆花瓣的总RNA合成,AS基因的探针是利用草莓果实的总RNA合成。
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The results show that the angular distribution of the total differential cross section at zero degree increases and the position of oscillation minimum of the same order gradually shift towards small scattering angle along with the increase of the incident isotope He atom mass at identical collision energy. And crossing angle between the elastic and total inelastic DCS gradually decreases and the total inelastic DCS gradually increases.
结果表明:在相同碰撞能量时,随着同位素氦原子质量的增加,总微分截面在0°时的角分布逐渐增大,同一级衍射振荡极小值位置逐渐向小散射角方向移动;弹性与总非弹性截面交界角逐渐减小,总非弹性截面逐渐增加。
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Construction companies, through making use of methods offered by this topic, analyze the risks in the light of practices of their own firms. After identifying and evaluating risks effectively, referring to solution my topic has mentioned, some risks precaution polices can be made accordantly. It is significant and important for construction companies to build risks precaution mechanism, reduce the potential risks rate, transfer the risks losses and make the biggest profits.
施工总承包企业根据本研究课题提供的施工总承包企业的常见风险分析,再结合本企业的实际情况进行分析,对潜在风险进行有效识别和评估,并参照本课题提供的一些对策,有针对性的制定适合本企业的防范对策,构建企业的风险防范体系,降低潜在风险发生的机会,减少或转移已发风险造成的损失,使企业获得最大的利润,对目前微利的施工总承包企业的生存与发展具有重要的意义。
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Objective: To study the effects of active components (total saponins, total steroids and total alkaloids) of Achyranthes bidentata Blume on the contraction of vascular smooth muscle.
目的:研究怀牛膝有效成分(总皂苷、总甾体、总生物碱)对血管平滑肌收缩作用的影响。
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The members of the same genus and family were grouped together. The polyogenetic relationships of 8 families were Pyrgomorphidae →Chrotogonidae→Pamphagidae→Oedipodidae→Acrididae→Arcypteridae→Gomphoceridae→Cantantopidae.Pygomorphidae had closer relationships with Chrotogonidae as well as being the most ancestral group. Arcypteridae and Gomphoceridae were the sister groups and had closer relationships with most evolutionary Catantopidae. Tridactylidae was divided firstly as a suborder,which differs from the recent taxonomy distinctly. Haglidae and Gryllidae were grouped into suborder Ensifera, Tetrigidae and 8 families of Acridoidea were grouped into suborder Caelifera, as same as recent taxonomy.
分子系统树表明:科内的属和属内的种均优先聚在一起;蝗总科8科的起源关系为:锥头蝗科→瘤锥蝗科→癞蝗科→斑翅蝗科→剑角蝗科→网翅蝗科和槌角蝗科→斑腿蝗科;锥头蝗科与瘤锥蝗科关系较近,是蝗总科内最原始的类群;槌角蝗科和网翅蝗科互为姐妹群,与最进化的斑腿蝗科关系较近;蚤蝼科为独立的一支,最先分出,似为一个亚目,与现用的分类系统有明显差别;哈螽科和蟋蟀科聚在一起为剑瓣亚目,蚱科和蝗总科的8科组成短瓣亚目,同现用的分类系统。
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For the synthesis reaction of chalcone, cyclohexanone aldolization and biodiesel,γ-Al_2O_3-NaOH-Na solid superacid has a satisfactory catalytic activity. With hypnone and phenylaldehyde as raw material, amount of catalyst 7.5% wt% of material, mole ratio of hypnone and phenylaldehyde 1:1.1, reaction temperature 40℃, after 3 hours, the yield of chalcone can be up to 96.88%. With cyclohexanone as raw material, amount of catalyst 10% wt% of material, reaction temperature 190℃, after 3 hours, dimmer of cyclohexanone can be up to 85.66%.
将该固体超强碱催化剂应用于查尔酮、环己酮自缩合以及生物柴油的合成反应中,该改性固体超强碱催化剂表现出了良好的催化活性:以苯乙酮和苯甲醛为原料,反应温度为40℃,催化剂用量为反应物总质量的7.5%,苯甲醛与苯乙酮摩尔比为1:1.1,反应3h查尔酮产率可达96.88%;以环已酮为原料,催化剂用量为原料总质量的10%,反应温度为190℃,反应3h,二聚物的总收率可达85.66%;以动物油和甲醇为原料,醇油摩尔为9:1,催化剂用量为动物油质量的2%,反应温度为70℃,反应3h后,生物柴油的收率可达91.8%。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。