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Comparative Study on Energy Consumption Structure of Ordinary Rural Households and Rural Tourism Households in Zhejiang Province, China
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作者 Bingxin Fan Wenxuan Li +2 位作者 Zilu Yin meiyan wang Chen Chen 《Energy and Power Engineering》 CAS 2023年第1期52-72,共21页
With the rapid development of rural tourism in China, more and more rural households operate a rural tourism business. The purpose of this study is to understand the energy consumption characteristic of ordinary rural... With the rapid development of rural tourism in China, more and more rural households operate a rural tourism business. The purpose of this study is to understand the energy consumption characteristic of ordinary rural households (ORHs) and rural tourism households (RTHs) in the mountainous area and islands area in Zhejiang province. 225 households were surveyed, including 185 ORHs and 40 RTHs, based on a field survey in Quzhou (mountainous area) and Zhoushan (islands area). Results reveal that energy consumption of ORHs is low, but energy comsumption of RTHs is high, about 3 to 5 times higher than that of ORHs. Given the results, the government and RTHs should pay more attention to take measures to reduce energy comsumption. Meanwhile, the factors affecting households’ energy consumption are also analyzed. Energy consumption of ORHs is affected by frequently used area, family income level and permanent population. Then energy consumption of RTHs is mainly related to the total building area, number of air conditioner (AC), number of guestrooms and family income level. 展开更多
关键词 Rural Tourism Ordinary Rural Households Rural Tourism Households Energy Consumption Energy Structure
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Research on Energy Consumption of Traditional Natural Villages in Transition: A Case Study in Zhejiang Province 被引量:1
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作者 meiyan wang Shenglan Huang +4 位作者 Xinxin Lin Didit Novianto Liyang Fan Weijun Gao Zu wang 《Energy and Power Engineering》 2016年第1期34-50,共17页
Traditional agriculture is in the direction of increasing integration of the primary industry, secondary industry, and tertiary industry in Zhejiang province. A survey was undertaken on energy consumption of tradition... Traditional agriculture is in the direction of increasing integration of the primary industry, secondary industry, and tertiary industry in Zhejiang province. A survey was undertaken on energy consumption of traditional natural villages by taking Anji Ligeng village for an example. This paper firstly studied rural buildings, rural family structure, occupants’ activity and the usage of household appliances in the form of a questionnaire. Then, the household energy resource structure and energy consumption structure were analyzed and compared with other surveys. The results show that, the electric energy consumption was 6 kWh/(m<sup>2</sup>&bull;a), which was far less than urban residential household. In rural household energy resource structure, the proportion of non-commercial energy resource was higher than commercial energy resource. Firewood accounted for 83%, electricity for 12%, LPG for 3% and solar energy for 2%. In building energy consumption structure, cooking and hot water took up 33%, appliances 31%, lighting 20%, heating 12%, cooling 4%. In all influential factors, frequently used area, number of air conditioner per household and building function were obviously correlated with energy consumption;income, building shape factor and window to wall area ratio had no correlation with energy consumption in the low energy consumption area. 展开更多
关键词 Natural Village Rural Building Energy Resource Energy Consumption Structure Influential Factor
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高钾血症对急性心肌梗死患者预后的影响 被引量:8
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作者 张美燕 王春梅 +4 位作者 许明正 李伟 张颖 蒋森 白建文 《临床心血管病杂志》 CAS CSCD 北大核心 2017年第2期150-153,共4页
目的:探讨高钾血症的发病率以及高钾血症与急性心肌梗死(AMI)患者预后之间的关系。方法:回顾性分析我院心内科196例AMI住院患者的资料,评价其住院期间血钾水平与院内病死率之间的关系以及纠正血钾异常是否有利于AMI患者的预后。根据血... 目的:探讨高钾血症的发病率以及高钾血症与急性心肌梗死(AMI)患者预后之间的关系。方法:回顾性分析我院心内科196例AMI住院患者的资料,评价其住院期间血钾水平与院内病死率之间的关系以及纠正血钾异常是否有利于AMI患者的预后。根据血钾水平分组,将所有患者分为<5.0mmol/L、5.0~<5.5mmol/L,5.5~<6.0mmol/L,≥6.0mmol/L 4组,分别分析其院内病死率。结果:196例AMI患者中高钾血症发病率为22.4%,中、重度高钾血症发病率为8.2%。高钾血症患者住院6~12d,平均7.5d;非高钾血症患者住院4.0~7.0d,平均5.0d。与非高钾血症患者相比,高钾血症患者院内病死率较高[优势比(OR)=6.57,95%可信区间(CI):2.37~18.24,P<0.01]。未纠正血钾异常增加AMI患者院内病死率(OR=4.67,95%CI:1.10~19.85,P<0.01)。多元回归分析显示,急性肾损伤是导致高钾血症的高风险因素。结论:AMI患者中高钾血症较常见,随着血钾水平升高,院内病死率也逐渐增高。临床上积极处理高钾血症可能有利于改善AMI患者的预后。 展开更多
关键词 急性心肌梗死 高血钾症 预后
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海马总蛋白提取及其酶解条件优化 被引量:5
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作者 胡佳瑶 张梅妍 +2 位作者 王振灵 魏娜 高炳淼 《生物技术进展》 2017年第4期310-314,共5页
为了提取海马总蛋白并确定最佳的酶解条件,将海马粉碎后采用水提法提取海马总蛋白。分别选用木瓜蛋白酶、碱性蛋白酶、中性蛋白酶和胰蛋白酶,在不同酶解p H、时间、温度和E/S条件下进行单因素和正交试验法对海马总蛋白的酶解条件进行优... 为了提取海马总蛋白并确定最佳的酶解条件,将海马粉碎后采用水提法提取海马总蛋白。分别选用木瓜蛋白酶、碱性蛋白酶、中性蛋白酶和胰蛋白酶,在不同酶解p H、时间、温度和E/S条件下进行单因素和正交试验法对海马总蛋白的酶解条件进行优化。利用聚丙烯酰胺凝胶电泳和BCA法来分别检测不同条件下的酶解情况及其蛋白含量,根据蛋白水解度来确定其最佳的酶解条件。实验结果表明:从10 g干海马中提取总蛋白为1.056 g,蛋白浓度为0.106 g/m L。海马总蛋白的最佳水解酶为碱性蛋白酶,其最佳酶解条件为:p H 9,E/S为5%,温度为50℃,时间为3 h,获得海马总蛋白的最大水解度为96.9%。研究获得了海马总蛋白及其最佳酶解条件,并为海马多肽生物活性研究奠定了基础。 展开更多
关键词 海马 蛋白 酶解条件 优化
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牛MYOZ1基因启动子活性分析 被引量:1
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作者 王明明 李安宁 +5 位作者 赵志东 张亚冉 段美艳 王亚宁 李世军 昝林森 《西北农林科技大学学报(自然科学版)》 CSCD 北大核心 2016年第9期1-9,共9页
【目的】鉴定牛MYOZ1基因转录起始位点,确定牛MYOZ1基因核心启动子区域,为进一步研究牛MYOZ1基因的转录调控机制奠定基础。【方法】以秦川牛肌肉5′RACE准备cDNA为模板,设计5′RACE扩增试验,确定牛MYOZ1基因转录起始位点。以秦川牛外周... 【目的】鉴定牛MYOZ1基因转录起始位点,确定牛MYOZ1基因核心启动子区域,为进一步研究牛MYOZ1基因的转录调控机制奠定基础。【方法】以秦川牛肌肉5′RACE准备cDNA为模板,设计5′RACE扩增试验,确定牛MYOZ1基因转录起始位点。以秦川牛外周血基因组DNA为模板,通过PCR克隆获得牛MYOZ1基因转录调控区-1 628/+61目的片段。通过生物信息学分析软件预测可能包含的转录因子结合位点,设计逐段缺失引物,获得7个亚克隆,将其分别与pGL3-Basic载体连接,得到牛MYOZ1基因启动子双荧光素酶报告基因重组质粒,通过脂质体法转染C2C12细胞系,检测7个重组质粒的荧光素酶活性,分析启动子活性。【结果】确定了牛MYOZ1基因的转录起始位点,成功克隆获得7个系列缺失的牛MYOZ1基因启动子双荧光素酶报告基因重组质粒:pMYOZ1-1 628/+61、pMYOZ1-1 430/+61、pMYOZ1-1 179/+61、pMYOZ1-932/+61、pMYOZ1-676/+61、pMYOZ1-437/+61和pMYOZ1-116/+61,其中重组质粒pMYOZ1-116/+61启动子活性极显著高于pGL3-Basic,推测牛MYOZ1基因-116/+61区域可能包含核心启动子;重组质粒pMYOZ1-1 628/+61启动子活性极显著高于pMYOZ1-1 430/+61片段活性(P<0.01),表明牛MYOZ1基因启动子区域-1 628/-1 430片段可能包含启动子活性增强元件。生物信息学分析发现,牛MYOZ1基因启动子-116/+61片段可能包含SP1、GC Box、CAAT等多个重要转录因子结合位点;-1 628/-1 430片段可能包含SP1、MyoD等多个重要转录因子结合位点。【结论】成功构建了7个系列缺失的牛MYOZ1基因启动子双荧光素酶报告基因重组质粒,且初步确定了牛MYOZ1基因的核心启动子区域位于-116/+61。 展开更多
关键词 MYOZ1 5′RACE 启动子 双荧光素酶报告载体
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Self-organizing strategy design and validation forintegrated air-ground detection swarm
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作者 meiyan An Zhaokui wang Yulin Zhang 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2016年第5期1018-1027,共10页
A self-organized integrated air-ground detection swarmis tentatively applied to achieve reentry vehicle landing detection,such as searching and rescuing a manned spaceship. The detectionswarm consists of multiple unma... A self-organized integrated air-ground detection swarmis tentatively applied to achieve reentry vehicle landing detection,such as searching and rescuing a manned spaceship. The detectionswarm consists of multiple unmanned aerial vehicles (UAVs)and unmanned ground vehicles (UGVs). The UAVs can accessa detected object quickly for high mobility, while the UGVs cancomprehensively investigate the object due to the variety of carriedequipment. In addition, the integrated air-ground detectionswarm is capable of detecting from the ground and the air simultaneously.To accomplish the coordination of the UGVs andUAVs, they are all regarded as individuals of the artificial swarm.Those individuals make control decisions independently of othersbased on the self-organizing strategy. The overall requirements forthe detection swarm are analyzed, and the theoretical model ofthe self-organizing strategy based on a combined individual andenvironmental virtual function is established. The numerical investigationproves that the self-organizing strategy is suitable andscalable to control the detection swarm. To further inspect the engineeringreliability, an experiment set is established in laboratory,and the experimental demonstration shows that the self-organizingstrategy drives the detection swarm forming a close range and multiangularsurveillance configuration of a landing spot. 展开更多
关键词 artificial swarm virtual potential field self-organizing integrated air-ground detection swarm.
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