Prediction of end-use energy consumption in a region of Northwest China

End-use energy consumption can reflect the industrial development of a country and the living standards of its residents. The study of end-use energy consumption can provide a solid basis for industrial restructuring, energy saving, and emission reduction. In this paper, we analyzed the end-use energy consumption of a region in Northwestern China, and applied the Markov prediction method to forecast the future demand of different types of end-use energy. This provides a reference for the energy structure optimization in the Northwestern China.     

肝龙胶囊和美洲大蠊脱脂膏对正常大鼠胆汁分泌的影响

目的:研究肝龙胶囊和美洲大蠊脱脂膏对正常大鼠胆汁分泌的影响。方法:取80只大鼠随机分组,各组均按20 m L/kg进行灌胃给药,1次/d,连续给药7 d。采用大鼠胆汁流量实验、胆汁成分分析观察受试药的利胆作用。结果:肝龙胶囊无利胆作用,对胆汁成分无影响;而美洲大蠊脱脂膏具有利胆作用,其胆汁流量与对照组比较差异有统计学意义(P<0.05),使胆汁中TBL、DBL、IBL的含量降低(P<0.05)。结论:肝龙胶囊对正常大鼠无利胆作用;美洲大蠊脱脂膏则有利胆作用。     

竞争环境下ODM厂商自有品牌的市场进入策略分析

在经济全球化背景下,越来越多的原始设备制造商(original equipment manufacturer, OEM)开始考虑创建自有品牌以实现向原始设计制造商(original design manufacturer, ODM)部分角色的转变.显然,ODM是否创建自有品牌进入市场会对相关企业及供应链产生重要影响.本文针对ODM与OEM构成的二级供应链系统,在不同博弈理论框架下分析了ODM自有品牌的市场进入策略及对OEM和供应链系统的影响.研究表明ODM的市场进入能有效缓解供应链的双重边际效应,但该效应会随着OEM渠道成本优势的扩大而减弱.而当OEM的渠道成本足够低时,ODM的市场进入可能对OEM也是有利的,此时ODM与OEM可实现"双赢".最后,将模型拓展至Nash讨价还价和Bertrand价格竞争情形,分析并验证了结论的鲁棒性.     

以木聚糖为抗菌剂的木质地板抗菌性能

随着生活水平的提高,人们越来越重视室内家居环境的健康、环保问题.因此,研究、开发抗菌实木地板具有现实意义.采用贴膜法检测抗菌地板的抗菌性能:以木聚糖为抗菌剂,用8%浓度溶液浸泡杨木单板,接种一定数量的大肠杆菌和金色葡萄球菌.经过一段时间培养后,检测地板细菌数量.结果表明:经过木聚糖溶液处理的地板对大肠杆菌和金色葡萄球菌的抗菌率为73.58%和90.09%,抗菌等级达到Ⅱ级.     

内蒙古草原三个优势针茅种群的自交繁殖能力研究

传粉方式是植物生态适应性的重要表现,通过对内蒙古典型草原优势种大针茅(Stipa grandis)、克氏针茅(Stipa krylovii)和草甸草原优势种贝加尔针茅(Sitpa baicalensis)花果期套袋处理,测定了其自交繁殖能力.三种针茅套袋处理都产生了相当数量的有效结实,且种子均能很好萌发,其中大针茅和克氏针茅套袋处理千粒重和萌发力总体优于自然条件未套袋的对照处理,贝加尔针茅略低于对照处理.结果表明:三种针茅均自交亲和,并有很强的自交能力,其中大针茅和克氏针茅的自交能力较高,贝加尔针茅的相对较低.     

非线性流滞阻尼器耗能结构随机风振响应和等效风荷载取值

针对非线性流滞阻尼器耗能结构在Davenport谱风振激励下的随机响应及等效风荷载取值进行了系统研究.首先建立了结构的非线性运动方程;经过等效线性化后,采用复模态理论解耦,进而用随机振动方法获得结构风振响应解析式和等效风荷载取值的计算公式,从而建立了结构非线性随机风振响应的分析方法.     

Entrainment-mixing parameterization in shallow cumuli and effects of secondary mixing events

Parameterization of entrainment-mixing pro- cesses in cumulus clouds is critical to improve cloud parameterization in models, but is still at its infancy. For this purpose, we have lately developed a formulation to represent a microphysical measure defined as homoge- neous mixing degree in terms of a dynamical measure defined as transition scale numbers, and demonstrated the formulation with measurements from stratocumulus clouds. Here, we extend the previous work by examining data from observed cumulus clouds and find positive cor- relations between the homogeneous mixing degree and transition scale numbers. These results are similar to those in the stratocumulus clouds, but proved valid for the first time in observed cumulus clouds. The empiricalrelationships can be used to parameterize entrainment- mixing processes in two-moment microphysical schemes. Further examined are the effects of secondary mixing events on the relationships between homogeneous mixing degree and transition scale numbers with the explicit mixing parcel model. The secondary mixing events are found to be at least partially responsible for the larger scatter in the above positive correlations based on obser- vations than that in the previous results based on numerical simulations without considering secondary mixing events.     

茅苍术多糖对Ⅱ型糖尿病大鼠的治疗作用及机制研究

目的探讨茅苍术多糖对Ⅱ型糖尿病大鼠的治疗作用及机制.方法给予Ⅱ型糖尿病模型大鼠不同剂量的茅苍术多糖,通过对模型大鼠体质量改变情况、空腹血糖含量、胰岛素水平及调节血脂代谢紊乱能力的观察,评价其治疗作用;通过对各组大鼠肝脏组织中MDA含量及CAT,SOD酶活性的测定,评价其抗氧化能力.结果茅苍术多糖可以改善糖尿病大鼠体质量下降情况,能够降低空腹血糖含量,提升胰岛素水平;茅苍术多糖也可以降低MDA含量,增加CAT和SOD活性.结论茅苍术多糖具有抗糖尿病作用,其作用机制可能与其抗氧化作用有关.     

小凉山子差拉彝族丧葬文化内涵

凉山彝族的丧葬习俗在经过先辈们不断演变后一直延续下来,逐渐形成了如今独特而丰富的丧葬文化。小凉山子差拉彝族是凉山彝族的重要分支,当地丧葬习俗复杂,文化内涵丰富,在传承了凉山彝族丧葬习俗文化的同时也根据自身特殊的人文、历史、地理,发展出了具有当地特色的丧葬习俗文化。     

中尺度对流系统的微波辐射和闪电特征分析

通过对1998年6-8三个月内发生在我国大陆和邻近洋面上的11个中尺度对流系统的分析,发现10.65和19.35 GHz垂直通道能较好的反应云中液态水和降水的吸收和发射;85.5和37.0 GHz垂直通道能较好的反应云中冰晶冰粒的散射.在此基础上,进一步探讨了85.5 GHz极化订正温度(PCT)和闪电的关系.结果表明闪电密度大的地方发生在PCT<220 K以下的等值线内;在220～260 K,闪电密度锐减;在260 K以上,几乎观察不到闪电现象.