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Search Results: 1 - 10 of 74138 matches for " 尹海彤 "
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中国天然气消费结构的模糊地域聚类
The Fuzzy Regional Clusters of China’s Natural Gas Consumption Structure
 [PDF]

周仲兵,
Advances in Energy and Power Engineering (AEPE) , 2016, DOI: 10.12677/AEPE.2016.45021
Abstract:
出于提高天然气政策效率、优化天然气消费预测以及改善天然气管网规划等目的,运用基于模糊等价关系闭包的聚类方法对大陆30个省份(不含西藏) 2013年天然气消费结构进行了聚类研究。结果为,这些省份:1) 在0.9的精度水平上,共有22类,其中河北与黑龙江组成1类,山西与湖北组成1类,江西、广东、贵州、云南与陕西组成1类,其余省份各独为1类;2) 在0.8的精度水平上,共有12类,其中北京、天津、内蒙古、上海、福建、河南、海南、重庆、青海及新疆各独为1类,江苏与山东组成一类,其余省份组成1类;3) 在0.7的精度水平上,共有4类,其中重庆独为1类,北京与上海组成1类,福建、河南组成1类;4) 在0.6的精度水平上,共有2类,其中重庆独为1类,其余所有省份组成1类;5) 在0.5的精度水平上,仅有1类。据研究结果,得三个主要结论:1) 地域特征并非中国天然气消费结构差异的唯一因素;2) 重庆、北京、上海、福建以及河南在天然气消费结构方面难以与其它省份聚为1类;湖北与山西以及江西、广东、贵州、云南与陕西在这方面很大程度上又各同属一类;3) 重庆表现出了最明显的独特性。这些现象的深层原因值得进一步研究。
In order to enhance the efficiency of natural gas policy, optimize the forecast of natural gas con-sumption and improve the plan of natural gas pipeline construction, an fuzzy clustering based on the fuzzy equivalence relation’s transitive closure is applied to the natural gas consumption structures of 30 provinces (excluding Tibet) of Mainland China in 2013. The results show that, among those provinces: 1) at the accuracy level of 0.9, there are 22 clusters, with Hebei and Hei-longjiang being one cluster, Shanxi and Hubei being another, Jiangxi, Guangdong, Guizhou and Shannxi being a third and each of the rest along being a single cluster; 2) at the accuracy level of 0.8, there are 12 clusters, with Beijing, Tianjin, Inner Mongolia, Shanghai, Fujian, Henan, Hainan, Chongqing, Qinghai and Xinjiang each being a single cluster, Jiangsu and Shandong being one, and all others being another; 3) at the accuracy level of 0.7, there are 4 clusters, with Chongqing along being a single, Beijing and Shanghai being one, Fujian and Henan being another, and all others be-ing the fourth; 4) at the accuracy level of 0.6, there are 2 clusters, with Chongqing along being a single, and all others being the other; and 5) at the accuracy level of 0.5, there is only 1 cluster. Three points can be concluded from the results. First, no evidence of regional characteristic has been found associated with the structures of natural gas consumption in those provinces. Second, it turns out to be rather difficult for Chongqing, Beijing, Shanghai, Fujian as well as Henan to be classified in one cluster, while Hubei & Shanxi and Jiangxi & Guangdong & Guizhou & Yunnan & Shannxi belong to one cluster rather significantly. And third, Chongqing appears the most unique. The in depth logics of those phenomena are worth further investigation.
师范院校大学生性别角色、人际关系及相关性研究
Studies on Gender Roles, Interpersonal Relationships and Correlation of Normal College Students
 [PDF]

, 石金红, , 蒋燕玲, 王建
Advances in Psychology (AP) , 2015, DOI: 10.12677/AP.2015.54032
Abstract:
为了解师范院校大学生在性别角色,人际关系两方面的基本情况,并进一步分析性别角色与人际关系之间的相关性,从而在此基础上为指引大学生的生活提供建议。本课题主要通过问卷调查法从三所高校分文科、理科、体育三个专业抽取241名被试学生进行调查。调查性别角色状况采用的是Bem编制的《贝姆性别角色量表》,调查人际关系状况采用的是郑日昌等人编制的《人际关系综合诊断量表》。结果表明师范院校大学生的性别角色类型分布不均衡.呈现出明显的男性化、女性化、双性化和未分化四种类型;目前大学生人际关系状况总体良好;四种性别角色在人际关系各维度上的表现存在显著差异,双性化个体的表现明显优于女性化个体和未分化个体,双性化是较佳的人格模式。我们鼓励大学生发挥自身性别角色类型的优势,培养双性化人格,提高人际交往能力,建立和谐的人际关系。
Object: To study the gender roles and interpersonal relationships of normal college students, and further analyze the correlation between gender roles and interpersonal relationships, so as to offer advices for the life of college students. Two hundred and forty one normal university students were surveyed with BSRI and Harmonious Human Relationship Scale. Results: It was showed that there are four different types: androgyny, masculinity, feminity and undifferentiation, and there are significant differences in the four dimensions among students. The present state of normal college students' interpersonal relationships is good in general. Four kinds of gender roles in each dimension of interpersonal relationships have significant differences. Students of androgyny per-form better than students of feminine and undifferentiation; androgyny is a better model of per-sonality. We suggest that college students should play the advantages of their own gender role types, cultivate androgyny personality, improve interpersonal competence and build harmonious human relations.
地区电网能量管理系统安全技术改进建议
,刘育权,熊文,,黄欣,宜宜
电力系统自动化 , 2012,
Abstract: 针对调度自动化中易被忽略的能量管理系统(EMS)自身的安全问题,提出了改进建议,同时验证了实现EMS平台松耦合、系统性的报警机制的建议。文中提出了EMS的分级模块化的安全配置架构设计,将系统所有相关的安全配置按照重要程度和功能隶属类别进行分类并建立分级模块,并基于并发版本管理系统(CVS)进行了安全配置管理实践。文中同时提出通过数据挖掘技术提前发现EMS存在的问题。最后,利用广州电网的EMS备用系统对以上建议的合理性进行了必要的验证。
猪舍不同发酵床垫料温室气体排放研究
魏思雨,李建辉,刘姝,,马晗,微琴,王小治,封克
农业环境科学学报 , 2015, DOI: 10.11654/jaes.2015.10.022
Abstract: 为评价生态养猪过程中不同发酵床垫料组成对温室气体排放的影响,在南京六合发酵床养殖基地,设置3种不同垫料的发酵床处理,其垫料组成分别为木屑(S)、木屑+稻壳(SR)、木屑+稻壳+秸秆段(SRS).在一个试验周期内,连续测定垫料中CO2、CH4及N2O等温室气体的排放,以及pH、含水率、铵态氮和硝态氮的动态变化,同时分析了三种垫料温室气体排放差异的机理.结果表明,垫料排放的温室气体以CO2和N2O为主,二者在三种温室气体二氧化碳排放当量中的占比高达99.3%~99.6%;三种垫料N2O的排放主要集中在猪出栏前一个月,占整个试验期间排放总量的61%~68%;在垫料中添加秸秆段(SRS)对CO2和N2O排放总量的影响不显著,但显著增加CH4的排放,其CH4排放总量分别是S和SR的2.30倍和2.46倍;SRS的二氧化碳排放当量亦高于S和SR,而S和SR的二氧化碳排放当量相差不大,三种处理间无显著性差异.
带相变蓄热材料热管仿真与试验对比研究
The Contrast of Simulation and Experiment of Heat Pipe with Heat Storage Material
 [PDF]

陆江峰,,
Modeling and Simulation (MOS) , 2014, DOI: 10.12677/MOS.2014.31003
Abstract:
带相变蓄热材料热管是一种新型的航天器用热管,它充分利用了相变材料的相变蓄热特性和热管优异的等温性,为航天器大功率短时工作单机或脉冲式工作单机的热控设计提供新思路。本文对这种新型热管建立了空间应用模型,并通过计算及试验对比,表明该热管具有良好的热控效果。
Heat storage material combined with heat pipe is a new type of heat pipe used in spacecraft. Taking full advantage of heat storage characteristics of phase change material and the excellent transfer performance of heat pipe, it offers new ideas for spacecraft thermal control design on high-power and short-term operation equipment or intermittent work equipment. By modeling and contrasting the simulation and experiment results, the heat pipe with heat storage material has a good effect on temperature control.
加快科技期刊集群化发展的步伐——以气象类期刊为例的集约经营策略探讨
仔锋?,
中国科技期刊研究 , 2013,
Abstract: 在领会新闻出版总署文件精神的基础上,提出科技学术期刊也要经营,需加快集群化发展步伐,搞集约经营。在不具备转企改制的现实条件下,应把改革重点放在集群化的具体运作机制建设上。面临学术期刊改革动力不足,裹足不前的现状,国家急需采取积极的政策推动科技期刊的集群化运作,宣传和引导期刊间的联合,为提高期刊整体竞争能力和未来转制创造条件。以气象类期刊为例,从重视质量、经济效益、机制创新三方面探索了集群化经营的具体策略。
空气净化器适用面积指标的理论分析
Theoretical Analysis of Commended Room Size Index for Air Cleaners

刘俊杰,
- , 2017, DOI: 10.11784/tdxbz201509025
Abstract: 针对国外空气净化器标准中的适用面积指标及我国的相关研究现状, 指出了现有适用面积算法仅考虑颗粒物去除的不合理性, 探究了室内颗粒物与气态污染物源的不同特点, 利用质平衡模型提出了新的去除气态污染物的适用面积计算方法, 并以去除甲醛的适用面积为例与颗粒物进行对比.结果表明:空气净化器去除甲醛的CADR值不及颗粒物CADR值的35% , 导致空气净化器针对气态污染物的适用面积远小于颗粒物的适用面积.上述结果说明将去除气态污染物的空气净化器用于颗粒物的适用面积房间, 会使空气因空气净化器净化效力不足而不能达标.
According to the commended room size index in foreign standards for portable air cleaners and the relevant study in China,this paper points out that it is unreasonable to calculate the commended room size only considering the particle matters. The different characteristics of indoor gaseous chemical contaminants and particle matters were discussed. A new method was figured out to calculate the commended room size considering gaseous chemical contaminants,and the commended room size for formaldehyde was calculated as an example to compare with that for PM2.5. Results show that the CADR for formaldehyde is no more than 35% of the CADR for PM2.5,which accounts for the much smaller room size for formaldehyde. Therefore,the gaseous chemical contaminants in ambient air may not be purified to the standard concentration if the air cleaner is applied to a room with the commended room size only considering PM2.5
天然禾草中三种内生真菌对非生物胁迫耐性的比较研究
Responses of Three Endophyte Fungi Species Isolated from Natural Grass to Abiotic Stresses
 [PDF]

魏茂英, 立佳,, 朱敏杰, 高玉葆
Botanical Research (BR) , 2012, DOI: 10.12677/br.2012.11001
Abstract: 从天然禾草羽茅和羊草中分离获得3种不同的内生真菌,即Neotyphodium gansuense、 Neotyphodium sibiricum和Neotyphodium sp.。在不同的温度、盐分和渗透胁迫条件下比较3种内生真菌的生长状况,并以分离自高羊茅中的模式菌株Neotyphodium coenophialum为对照。结果表明,3种内生真菌与模式菌株的最适生长温度均为25℃,但模式菌株N. coenophialum在32℃时没有生长,而从天然禾草中分离获得的内生真菌在10℃-32℃温度范围内均可生长。当PEG浓度超过15%时,3种内生真菌与模式菌株均不能生长,N. sp.在10%时仍长势良好,与N. coenophialum相似,而N. sibiricum和N. gansuense在10%PEG浓度时,生长受到显著抑制。在盐分处理时,N. sp.和N. gansuense在0.3 mol/L的NaCl浓度下,生长受到显著抑制;而N. sibiricum在1.5 mol/L的NaCl浓度时生长才受到显著抑制,但耐盐性均不及N. coenophialum,后者在3.0 mol/L的NaCl浓度下还可以生长。总体看来,从天然禾草中获得的3种内生真菌与模式菌株相比较,耐高温的能力更强;耐渗透胁迫的能力只有羊草中的N. sp.与模式菌株接近,而羽茅中的两种菌株的耐渗透胁迫能力却显著低于模式菌株;对于不同的盐浓度胁迫,3种菌株的耐盐性都显著低于模式菌株。不同种类内生真菌在渗透胁迫方面的耐性与其宿主植物表现相一致。
Biological and physiological characteristics of three Neotyphodium species, isolated from native grasses, were compared with the model endophyte Neotyphodium coenophialum, isolated from tall fescues, under different temperature, water and salt conditions. Three Neotyphodium species included Neotyphodium gansuense, Neotyphodium sibiricum and Neotyphodium sp, among which N. sp was isolated from Leymus chinensis while the other two species were isolated from Achanatherum sibiricum. The results showed that the optimal temperature for the four endophytes was 25?C. The model endophyte N. coenophialum was un-able to grow at 32?C, but the other endophytes were able to grow at 10?C - 32?C. Four fungi could not grow when the PEG concentration was 15%. For N. sp., it tended to increase when PEG concentration was 10%, and this situation is similar to N. coenophialum. For N. gansuense and N. sibiricum, the growth was not in-fluenced till the PEG concentration was up to 10%. Under the treatment of NaCl, the biomass of N. sibiricum and N. coenophialum significantly increased, but the growth of N. gansuense and N. sp. were significantly re-strained at 0.3mol/L NaCl. N. sibiricum was unable to grow at 1.5mol/L NaCl, but N. coenophialum can still grow under 3 mol/L NaCl. As a result, three species of endophytes which were isolated from native grasses can tolerate high temperature than the model endophyte. For the ability of resistance to osmotic stress, only N. sp. is similar to the model endophyte and two endophytes from A. sibiricum was significantly lower than model endophyte. For different salt stress, the tolerance of three native species was significantly lower than the model species.
直肠肉瘤样癌一例
张倩,刘屹,
- , 2017, DOI: 10.13609/j.cnki.1000-0313.2017.01.021
Abstract: 肉瘤样癌; 直肠; 体层摄影术,X线计算机; 磁共振成像; 病理
INACTIVATION AND CONFORMATIONAL CHANGES OF AMEVOACYLASE DURING DECYLTRIMETHYL AMINONIUM BROMIDE TITRATION
溴化+烷基三甲基铵滴定时氨基酰化酶的失活与构象变化的比较

,
生物物理学报 , 1993,
Abstract: The inactivation and conformational changes of aminoacylase during denaturation by detergent decyltrimet yl aminonium bromide have been studied. The enzyme activity decreased with increasing of detergent concentration and was inactivated completely at a comcentration of 50mmol/L . The conformational changes of aminoacylase during denaturation at different concentrations of decyltrimethyl aminonium bromide have been determined by fluorescence emission spectra. With the increase of concentration of detergent fluorescence emission intensity decreased and reached the minimum at a detergent concentration of 220mM. Results showed that the inactivation of enzyme was prior to its conformational changes. It suggests that the active site of aminoacylase may be more flexible than the whole molecule.
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