安徽快三

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Investigating the mechanical and acoustic emission characteristics of brittlefailure around a circular opening under uniaxial loading 预览
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作者 Peng Li Fen-hua Ren +3 位作者 Mei-feng Cai Qi-feng Guo Hao-fei Wang Kang Liu 《矿物冶金与材料学报:英文版》 SCIE EI CAS CSCD 2019年第10期1217-1230,共14页
The size of underground openings in rock masses in metal mines is critical to the performance of the openings. In this study, the mechanical and acoustic emission (AE) characteristics of brittle rock-like specimens co... The size of underground openings in rock masses in metal mines is critical to the performance of the openings. In this study, the mechanical and acoustic emission (AE) characteristics of brittle rock-like specimens containing a circular opening with different ratios of opening diameter to sample size λ (λ = 0.1, 0.13, 0.17, 0.2, and 0.23) were investigated under uniaxial compression with AE monitoring. The results indicate that the opening size strongly affected the peak strength and the elastic modulus. Crack initiation first started from the upper surface of the specimens, not from the periphery of the openings. Tensile and shear cracks coexisted on the roof and floor of the specimens, whereas tensile cracks were dominant on the two sides. The fracture mode of samples with openings was partially affected by the relative size of the pillars and openings. The AE response curves (in terms of counts, cumulative energy, cumulative counts, and b-value) show that brittle failure was mainly a progressive process. Moreover, the AE information corresponded well with microcrack evolution in the samples and thus can be used to predict sample failure. 展开更多
关键词 rock mechanics circular opening opening size uniaxial compression acoustic emission
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男性滑板裤的结构研究 预览
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作者 石睿 钟安华 《服饰导刊》 2019年第2期41-44,共4页
滑板运动即将成为2020年东京奥运会中新加入的五项新运动之一,因此滑板服装研究成为了热门课题。文章通过对滑板运动中缓冲、蹬伸与起跳这三个基本动作的运动张量分析,整合了这三个运动状态下下肢带关节处受力伸张方向,测试出在模拟滑。。。 滑板运动即将成为2020年东京奥运会中新加入的五项新运动之一,因此滑板服装研究成为了热门课题。文章通过对滑板运动中缓冲、蹬伸与起跳这三个基本动作的运动张量分析,整合了这三个运动状态下下肢带关节处受力伸张方向,测试出在模拟滑板的运动状态下,为了提升下肢带的灵活度,保证滑板运动专项动作的完成情况,裤子在膝盖处的开口大小应为6~8cm,臀部开口大小应为4~5cm;并依据普通运动裤的版型进行剪口设计,将其拓版得到滑板裤的裤子结构。研究发现:创新设计出来的滑板裤结构更贴合滑板运动状态下人体的肢体表现,为滑板运动员提供了更具独到的专项运动保障,另外为了保证正常的生活着装,在剪口处设计的具有隐蔽性的功能拉链,完美的将功能性与美观性相结合。 展开更多
关键词 滑板运动 滑板裤 剪口 开口量 结构设计
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China·Zhangzhou Cross-Strait Viewing Stone Appreciation Cultural Exchange Exhibition Held A Grand Opening Ceremony
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作者 Sun Yongfeng Xue Minmin 《宝藏》 2019年第6期14-15,共2页
The flourishing age of China,the great beauty of Zhangzhou.Across the Taiwan Strait and Chinese mainland,we share the joy,Jiu Longbi stone add its splendor.On May 16,2019,China.Zhangzhou Cross-Strait Viewing Stone App... The flourishing age of China,the great beauty of Zhangzhou。Across the Taiwan Strait and Chinese mainland,we share the joy,Jiu Longbi stone add its splendor。On May 16,2019,China。Zhangzhou Cross-Strait Viewing Stone Appreciation Cultural Exchange Exhibition held a grand opening ceremony at Zhangzhou Museum of Art,Fujian Province。 展开更多
关键词 China Zhangzhou CROSS-STRAIT Viewing STONE APPRECIATION Cultural Exchange EXHIBITION HELD A GRAND Opening Ceremony
安徽快三Research of the anxiolytic effect of Baihe Dihuang Decoction
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作者 Fang Huan-Le Han Ning-Juan +2 位作者 Li Xiao-Ming Niu Rui Chen Yan-Bin 《海南医科大学学报(英文版)》 2019年第5期6-9,共4页
Objective:To study the effect of Baihe Dihuang Decoction in improving anxiety and its mechanism of action.Methods: Male mice were randomly divided into 5 groups: blank control group, Baihe Dihuang Decoction high, medi... Objective:To study the effect of Baihe Dihuang Decoction in improving anxiety and its mechanism of action.Methods: Male mice were randomly divided into 5 groups: blank control group, Baihe Dihuang Decoction high, medium, low-dose group and diazepam group. After continuous intragastric administration for 14 d, the behavioral test of the mouse elevated plus maze experiment and opening test was performed. The brain tissue GABA and Glu content was measured by immunosorbent assay (ELISA).Results: Compared with the blank control group, the middle and high doses of Baihe Dihuang Decoction could increase the time and frequency of movement of the mice in the open cross labyrinth in the open arm and increase the number of times that the mouse entered the central area in the opening test. The anti-anxiety effect also showed an increase in the brain tissue GABA content in mice, ignificantly decreased Glu contents in mice.Conclusion: Baihe Dihuang Decoction has some anxiolytic effect, and anti-anxiety effect may be related to increasing brain tissue GABA content, decreased Glu contents in mice. 展开更多
关键词 Baihe Dihuang DECOCTION ANXIETY OVERHEAD cross LABYRINTH OPENING test GABA GLU
THE FRENCH CONNECTION
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《北京周报:英文版》 2019年第35期16-17,共2页
To learn more about Wuhan’s opening up and opportunities as well as its relationship with France,Beijing Review reporter Liu Ting interviewed Olivier Guyonvarch,Consul General of France in Wuhan,on July 25.An edited ... To learn more about Wuhan’s opening up and opportunities as well as its relationship with France,Beijing Review reporter Liu Ting interviewed Olivier Guyonvarch,Consul General of France in Wuhan,on July 25。An edited excerpt follows。 展开更多
关键词 WUHAN OPENING up and OPPORTUNITIES FRANCE
WARM WINTER FRIENDS
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《北京周报:英文版》 2019年第4期3-5,共3页
Artists perform during the opening ceremony of the 2019 China-Finland Year of Winter Sports in Beijing on January 15,marking the first sports-themed year between the two countries. China and Finland published a joint ... Artists perform during the opening ceremony of the 2019 China-Finland Year of Winter Sports in Beijing on January 15,marking the first sports-themed year between the two countries。 China and Finland published a joint declaration in 2017 to carry out cooperation in winter sports in preparation for the Olympic Winter Games 2022 which will be held in Beijing and Zhangjiakou in north China's Hebei Province。 展开更多
关键词 ARTISTS PERFORM OPENING CEREMONY FINLAND published
Special Area,Special Initiative
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作者 Wang Jun 《北京周报:英文版》 2019年第35期34-35,共2页
The Lin-gang Special Area of the China(Shanghai)Pilot Free Trade Zone(FTZ)was off icially unveiled on August 20 after an overall plan was issued by the State Council on August 6。The special area is one of the measures。。。 The Lin-gang Special Area of the China(Shanghai)Pilot Free Trade Zone(FTZ)was off icially unveiled on August 20 after an overall plan was issued by the State Council on August 6.The special area is one of the measures for advancing further opening up initiated by Chinese President Xi Jin ping at the First China International Import Expo in November 2018. 展开更多
关键词 Lin-gang SPECIAL Area further OPENING up First China Intemational IMPORT EXPO
新时期计算机软件开发技术的应用及发展趋势 预览
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作者 高建涛 《信息与电脑》 2019年第13期5-6,共2页
计算机一经问世,就给全世界的生产方式带来了巨大影响。此背景下,计算机软件开发技术的深度应用,必将影响各行各业的发展。通过概述计算机软件开发现状,指出未来该行业的发展方向,系统阐述了计算机软件开发的方法。通过描述其方法,概括... 计算机一经问世,就给全世界的生产方式带来了巨大影响。此背景下,计算机软件开发技术的深度应用,必将影响各行各业的发展。通过概述计算机软件开发现状,指出未来该行业的发展方向,系统阐述了计算机软件开发的方法。通过描述其方法,概括计算机软件开发技术与传统技术不同的新颖特征,为社会发展提供的服务,以期为相关人士提供借鉴。 展开更多
关键词 计算机软件 服务性 网络化 开放化
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泵站压力出水箱涵隔墩开孔优化研究
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作者 张春辉 奚斌 +2 位作者 唐鹏 杨旭 鲁儒 《水电能源科学》 北大核心 2019年第5期172-175,共4页
堤后式排涝泵站多采用压力出水箱涵作为其出水结构,多机组泵站的压力箱涵常做成汇水结构,通道数一般少于机组数,致使箱涵内各通道和其出口流速分布不均,易形成不良流态。结合物理模型试验采用CFX软件进行数值模拟,并通过在压力出水箱涵。。。 堤后式排涝泵站多采用压力出水箱涵作为其出水结构,多机组泵站的压力箱涵常做成汇水结构,通道数一般少于机组数,致使箱涵内各通道和其出口流速分布不均,易形成不良流态。结合物理模型试验采用CFX软件进行数值模拟,并通过在压力出水箱涵内隔墩上开孔的措施来改善压力出水箱涵内及其出口水流流态。结果表明,在压力出水箱涵内隔墩上开孔能均匀分配各通道流量,有效减小箱涵出口处流速不均匀度,改善出口流态,防止箱涵出口河床被冲刷,提高泵站安全稳定性。如将开孔处与水流垂直接触面制作成流线型结构有利于开孔处水流的平稳流动,减小开孔处水流流动产生的水头损失。 展开更多
关键词 压力出水箱涵 隔墩 开孔 数值模拟 优化
翼缘-腹板削弱型梁柱节点受力性能影响因素分析 预览
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作者 李君君 王海彦 刘晓庆 《工程抗震与加固改造》 北大核心 2019年第4期56-63,共8页
"强节点弱构件"是保证结构抗震能力的重要一环,工程设计中一般采用"狗骨式"等方式实现。考虑到工程中管线纵横交错,管线往往需要横向穿越梁腹板,因此本文创新性地提出翼缘-腹板削弱型梁柱节点,即在削弱翼缘的基础... "强节点弱构件"是保证结构抗震能力的重要一环,工程设计中一般采用"狗骨式"等方式实现。考虑到工程中管线纵横交错,管线往往需要横向穿越梁腹板,因此本文创新性地提出翼缘-腹板削弱型梁柱节点,即在削弱翼缘的基础上开孔削弱腹板,开孔形式为圆形。除开孔形式外,本文还通过ANSYS数值模拟,研究了开孔的不同位置、不同直径、不同面积对翼缘-腹板削弱型梁柱节点受力性能的影响。再通过荷载-位移曲线、塑性铰发展过程等指标,确定了该类节点的开孔原则。使得按照该原则进行设计建造的构件能够在保证应有承载力的情况下,较好地实现"强节点弱构件"的效果。研究发现:(1)翼缘-腹板削弱型构件的极限承载力与纯翼缘削弱型构件大致相同,既可以满足工程实际需求,又可以更好地实现"强节点弱构件";(2)腹板开孔数量对节点承载力影响较小,但可以有效促进塑性铰在梁端实现;(3)开孔中心距柱翼缘距离D对节点性能影响较大,当开孔距离为0. 6~0. 7倍翼缘宽度时效果最好。 展开更多
关键词 削弱型梁柱节点 开孔 强节点弱构件 塑性铰
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Great Expectations
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作者 Li Xiaoyang 《中国与非洲:英文版》 2019年第2期14-15,共2页
One day after the celebration of the 40th anniversary of reform and opening up,the Central Economic Work Conference,China's annual meeting to set the agenda for the economic development,was convened on December 19... One day after the celebration of the 40th anniversary of reform and opening up,the Central Economic Work Conference,China's annual meeting to set the agenda for the economic development,was convened on December 19-21,2018。It reviewed the economic performance in 2018 and outlined major tasks for 2019。The conference focused on ensuring stable growth and further reform and opening up。 展开更多
关键词 REFORM and OPENING up celebration CENTRAL ECONOMIC
Trade Friction Fallout
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作者 Benard Ayieko 《中国与非洲:英文版》 2019年第2期16-17,共2页
After 40 years of reform and opening up,China is now the world second largest economy,next to the United States.China's GDP has experienced exponential growth over the past decades,successfully breaking the barrie... After 40 years of reform and opening up,China is now the world second largest economy,next to the United States.China's GDP has experienced exponential growth over the past decades,successfully breaking the barriers of a centrally-planned and closed economy to evolve to a modern,dynamic and progressive manufacturing and exporting hub of the world. 展开更多
关键词 TRADE FRICTION reform and OPENING up UNITED STATES
空调室外机元器件散热的热设计研究 预览
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作者 李树云 彭光前 吴俊鸿 《制冷》 2019年第1期13-18,共6页
为了降低空调室外机电子元器件的温度,运用热分析软件对空调室外机进行温度场模拟。根据元器件所处空间内的温度分布,提出在室外机隔板上增开引风孔的方案,与隔板上不增加引风孔方案相比,新方案提升了气流流动,很好的降低了元器件温度,。。。 为了降低空调室外机电子元器件的温度,运用热分析软件对空调室外机进行温度场模拟。根据元器件所处空间内的温度分布,提出在室外机隔板上增开引风孔的方案,与隔板上不增加引风孔方案相比,新方案提升了气流流动,很好的降低了元器件温度,元器件温度平均降低12.3℃。最后对新方案进行实验验证,结果表明仿真的有效性和可靠性。 展开更多
关键词 空调 隔板 引风孔 元器件 散热
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HAVING FULL UNDERSTANDING OF THE TIMES.COMPIYING WITH THE TREND.STANDING FAST AND MAKING INNOVATIONS:ON CHINA'S DIPLOMACY IN FOUR DECADES OF REFORM AND OPENING UP 预览
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作者 WANG CUNGANG 《当代世界:英文版》 2019年第1期21-25,共5页
The year 1978 was destined to be an extraordinary year in contemporary Chinese history,which witnessed the convening of the grd Plenary Session of the iuth National Congress of the Communist Party of China,the adoptio... The year 1978 was destined to be an extraordinary year in contemporary Chinese history,which witnessed the convening of the grd Plenary Session of the iuth National Congress of the Communist Party of China,the adoption of reform and opening up policy and setting of new journey of China's diplomacy. 展开更多
关键词 CHINA'S DIPLOMACY DECADES OF REFORM AND OPENING
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清末民初北部湾地区市场开放状态评析 预览
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作者 唐凌 《钦州学院学报》 2019年第2期20-27,共8页
北海的开埠通商是北部湾地区市场开放的重要标志。清末民初,该地区的市场空间不断扩大,交通、税制、环境、组织管理等要素不断完善,成为中国连接东南亚市场的前沿阵地。政府力量和民间力量在这个过程中均发挥了积极而重要的作用。但是,。。。 北海的开埠通商是北部湾地区市场开放的重要标志。清末民初,该地区的市场空间不断扩大,交通、税制、环境、组织管理等要素不断完善,成为中国连接东南亚市场的前沿阵地。政府力量和民间力量在这个过程中均发挥了积极而重要的作用。但是,由于受地理及社会条件的限制,北部湾地区的口岸地位不凸显,产品结构单一,贸易量较小,市场发展程度总体偏低。为此,当前“一带一路”的经济合作实施,必须建立在对这种历史基础的正确认识上。 展开更多
关键词 北部湾地区 市场 开放状态
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安徽快三Address in the Opening Ceremony 预览
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作者 孙咸泽 《世界中西医结合杂志(英文)》 2019年第3期31-33,共3页
Dear Mr. Chairman, distinguished guests, experts, and representatives, Good morning. Today, Chinese Pharmaceutical Association and Drug Information Association holds the Sino-Europe Symposium on traditional drugs, inv... Dear Mr。 Chairman, distinguished guests, experts, and representatives, Good morning。 Today, Chinese Pharmaceutical Association and Drug Information Association holds the Sino-Europe Symposium on traditional drugs, inviting representatives of drug regulatory bodies, academic institutions, production enterprises, both from China and the European Union (EU), having in-depth discussion on law and regulations。 展开更多
关键词 OPENING CEREMONY Chinese PHARMACEUTICAL ASSOCIATION DRUG Information 安徽快三ASSOCIATION
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超高层建筑地下室顶板施工荷载设计与施工研究 预览
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作者 程昌宏 令狐延 +1 位作者 黄硕 祝阳 《建筑施工》 2019年第9期1631-1633,1657共4页
某超高层建筑位于CBD (中央商务区)核心区,由于区域内建筑密度高、施工场地狭小,无法满足施工要求,只能考虑以地下室顶板施工荷载设计及作为施工场地。鉴于此,介绍了地下室顶板施工荷载设计及施工时梁、板、洞口、后浇带位置的具体处理... 某超高层建筑位于CBD (中央商务区)核心区,由于区域内建筑密度高、施工场地狭小,无法满足施工要求,只能考虑以地下室顶板施工荷载设计及作为施工场地。鉴于此,介绍了地下室顶板施工荷载设计及施工时梁、板、洞口、后浇带位置的具体处理方法。该方法既不影响原设计的使用功能,又可满足现场施工需要,同时也避免了地下室顶板大量的后加固措施,工程应用取得了良好的经济效益。 展开更多
关键词 地下室顶板 施工荷载 洞口 后浇带
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Legislative Work of the National People's Congress and Its Standing Committee over 40 Years of Reform and Opening Up
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作者 Xin Chunying 《求是:英文版》 2019年第2期36-47,共12页
The legislative achievements of the National People’s Congress (NPC) and its Standing Committee can be enumerated at great length, yet their most substantial part has been to form and continuously improve the sociali... The legislative achievements of the National People’s Congress (NPC) and its Standing Committee can be enumerated at great length, yet their most substantial part has been to form and continuously improve the socialist legal system with Chinese characteristics, which has provided legal guarantees for reform and opening up, and socialist modernization。 展开更多
关键词 NATIONAL People's CONGRESS STANDING COMMITTEE Reform and Opening Up
浅谈对外开放在国家重点实验室发展中的重要性 预览
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作者 陈东莉 《实验室科学》 2019年第4期164-166,共3页
近年来,随着社会发展,科研水平的提高,对外开放已经是国家重点实验室科技创新的重要组成部分。介绍了国家重点实验室建设发展中对外开放的形式和内容,以植物病虫害生物学国家重点实验室为例,对外开放取得成效和存在的问题进行了深入的讨... 近年来,随着社会发展,科研水平的提高,对外开放已经是国家重点实验室科技创新的重要组成部分。介绍了国家重点实验室建设发展中对外开放的形式和内容,以植物病虫害生物学国家重点实验室为例,对外开放取得成效和存在的问题进行了深入的讨论,说明了对外开放在国家重点实验室的发展中具有非常重要的作用,也说明了积极探索构建创新型的开放机制的重要性。 展开更多
关键词 国家重点实验室 对外开放 发展 重要作用
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离心式空压机轴承温度高的处理 预览
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作者 汪雁 金浩 韩义赟 《冶金动力》 2019年第6期32-33,36共3页
对离心式空压机运行中存在的轴承温度高的问题,通过摸索改进,制定整改措施解决顽疾,为设备安全运行奠定基础。
关键词 轴承 温度高 回油面积 开孔
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