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Study of Corrosion on Film Properties of High Strength Cu-Sn-Zr Alloys in Tap Water 认领
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作者 Itaru Ikeda Noriyuki Tanaka +2 位作者 Motoki Kuratani Yutaka Yamada Osamu Sakurada 《材料科学与应用期刊(英文)》 2020年第1期70-80,共11页
Corrosion has been reported to occur in the copper tubes of heat ex-changers in multiple-circulation hot water supply systems. We have been investigating the applicability of high-strength Cu-0.65 mass% Sn-0.014 mass%... Corrosion has been reported to occur in the copper tubes of heat ex-changers in multiple-circulation hot water supply systems. We have been investigating the applicability of high-strength Cu-0.65 mass% Sn-0.014 mass% Zr-0.020 mass% P alloy to counteract this corrosion. Immersion tests, electrochemical measurements, and field tests were performed. Excellent corrosion resistance of the alloy was established under conditions with flowing water due to the formation of composite films containing tin. The alloy is expected to be better than copper as a corrosion-resistant material for heat exchanger tubes. 展开更多
关键词 Cu-Sn-Zr Alloy CORROSION Resistance Heat EXCHANGER HOT Water Supply System Flow CONDITION
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基于GM模型的四川省畜产品供给预测分析 认领
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作者 冯慧翎 罗璐曦 +1 位作者 陈文宽 陈科成 《中国农业资源与区划》 CSSCI CSCD 北大核心 2020年第2期267-274,共8页
[目的]分析和预测四川省畜产品的供给现状及预测,有利于保障农产品有效供给,加快推进农业农村经济发展,促使四川由农业大省向农业强省转变。[方法]文章首先对国内外相关研究进行了梳理,然后在分析2007—2016年四川省畜产品现状基础上,... [目的]分析和预测四川省畜产品的供给现状及预测,有利于保障农产品有效供给,加快推进农业农村经济发展,促使四川由农业大省向农业强省转变。[方法]文章首先对国内外相关研究进行了梳理,然后在分析2007—2016年四川省畜产品现状基础上,总结目前存在的问题,利用灰色系统理论,采用GM(1,1)模型对未来10年四川省的畜产品供给进行预测。[结果]结果显示该模型的预测精度较高,结果可信。四川省未来10年的畜产品产量总体呈逐年增长态势,但增长速度较缓慢,而且各市区的畜产品产量存在区域差异,肉类总产、猪肉以及禽肉产量都呈上涨趋势,仅有较少市区的牛、羊、兔等草食性动物的产量有所下降。[结论]未来应该从保障产品供给、转变消费观念以及增加科技投入等方面着手,为畜牧业的发展提供方向性借鉴指导,推动畜牧产业结构转型升级,从而稳步推进农业供给侧结构性改革。 展开更多
关键词 畜产品 供给 供给侧改革 灰色预测 四川省
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Reference of New Zealand’s Drug Shortage Management Measures 认领
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作者 Zhang Jie Zhang Fang 《亚洲社会药学》 2020年第2期68-72,共5页
Objective To provide a scientific reference for China’s drug shortage and supply mechanism by conducting a specific study on New Zealand’s management measures for dealing with the shortage of drugs.Methods Through r... Objective To provide a scientific reference for China’s drug shortage and supply mechanism by conducting a specific study on New Zealand’s management measures for dealing with the shortage of drugs.Methods Through reviewing the official website of the New Zealand Pharmaceutical Management Agency(PHARMAC)and relevant literature,the specific measures to deal with drug supply and shortage in New Zealand were sorted out,and then some countermeasures were put forward for our domestic drug supply.Results and Conclusion PHARMAC worked closely with the pharmaceutical suppliers and signed contracts to maintain their relationship.A sound drug supply mechanism has been established to respond to various supply issues.At present,there are some problems in drug supply in China,such as the lack of timely publicity of shortage information,the lack of management team for supply,and the lack of alternative drug supply mechanism.China should learn from the PHARMAC to establish a supply contract management team to promote the transparency of drug shortage information and seek alternative drug supply actively. 展开更多
关键词 New Zealand drug shortage drug supply supply contract
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Optimization of Irrigation Water Allocation Framework Based on Genetic Algorithm Approach 认领
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作者 Godwin Jiya Adama David Onemayin Jimoh Martins Yusuf Otache 《水资源与保护(英文)》 2020年第4期316-329,共14页
In a world where excessive use and degradation of water resources are threatening the sustainability of livelihoods dependent on water and agriculture, increased food production will have to be done in the face of a c... In a world where excessive use and degradation of water resources are threatening the sustainability of livelihoods dependent on water and agriculture, increased food production will have to be done in the face of a changing climate and climate variability. There is a need to make optimal use of the available water resource to maximize productivity. Climate-smart irrigation is aimed at increasing per unit production and income from irrigated cropping systems without having negative impacts on the environment or other water users and uses. This paper developed a water allocation model using Genetic Algorithm to equitably allocation available water to the various sectors in Kano River Irrigation Scheme yielding an optimal as well as equitable water release with a 96.44% demand met. An average relative supply of 0.94 was obtained indicating the there was even supply of water to all the sectors. The model is robust and relatively easy to apply and can be employed by farm managers to achieve equity and optimal use of the available water resource. 展开更多
关键词 Climate-Smart AGRICULTURE IRRIGATION WATER ALLOCATION SECTORS RELATIVE WATER Supply
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How Can Environmental Pollution by Ships be Minimized at the New Terminal of Cargo Offloading Facility of the Caspian Sea? 认领
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作者 Sarvar Khalikov Altynbek Smailkhan Kamila Nukuyeva 《地球科学和环境保护期刊(英文)》 2020年第1期28-45,共18页
Nowadays pollution from ships in ports/terminals of the Caspian Sea has a significant impact on surrounding nature and health. And the Kazakh oil company “Tengizchevroil” is about to realize a new big business proje... Nowadays pollution from ships in ports/terminals of the Caspian Sea has a significant impact on surrounding nature and health. And the Kazakh oil company “Tengizchevroil” is about to realize a new big business project in terms of water area, which might lead to increased pollution. So, this research specifically concentrates on the reduction of environmental pollution problems at the new Terminal of Cargo Offloading Facility and Cargo Transportation Route of the North Caspian Sea. In order to reach this motive, the authors analyze IMO’s International Convention for the Prevention of Pollution and its initial strategy on reduction of GHG emissions from ships. In addition, efficiency of shore power supply, which is often used by developed countries for better environmental conditions for the port area, is also examined. Overall, the authors outline six proposals as to the best course of action, which needs to be implemented at the new Tengizchevroil terminal. The items such as calculation of damage and calculation of prices of pollution prevention measures will not be included in the research. 展开更多
关键词 Kazakhstan North Caspian Sea MARPOL GHG Emission Air POLLUTANTS SHORE Power Supply
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Measuring and Forecasting Chinese Domestic Supply and Demand for Grain Sorghum 认领
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作者 Shuguo Yang Jaime Malaga 《农业科学(英文)》 2020年第1期71-87,共17页
In the past 5 years, the use of sorghum as substitutes for corn for feed in China has increased rapidly. Most of the recent growth of demand in sorghum has mainly been met by imported sorghum. Because sorghum is a min... In the past 5 years, the use of sorghum as substitutes for corn for feed in China has increased rapidly. Most of the recent growth of demand in sorghum has mainly been met by imported sorghum. Because sorghum is a minor crop and only shares a very small proportion of the grain production in China, few studies have examined domestic demand and supply of sorghum in China. Both China’s producers and other sorghum import countries can benefit from forecasts of China’s domestic supply and demand for sorghum. 展开更多
关键词 SORGHUM China DEMAND and Supply
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文章速递中国蚕丝供求测算与预测研究 认领
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作者 何樟勇 李建琴 +1 位作者 顾国达 孔伟杰 《蚕业科学》 CAS CSCD 北大核心 2020年第3期356-366,共11页
根据历年鲜茧产量、茧丝转化比率等统计和调查数据,测算蚕丝供给量,发现蚕丝产量的测算数据明显小于其统计数据;根据历年的茧丝绸进出口量、内外销比率等统计和调查数据,估算蚕丝需求量,发现内销占比持续上升而外销占比不断下降;比较蚕... 根据历年鲜茧产量、茧丝转化比率等统计和调查数据,测算蚕丝供给量,发现蚕丝产量的测算数据明显小于其统计数据;根据历年的茧丝绸进出口量、内外销比率等统计和调查数据,估算蚕丝需求量,发现内销占比持续上升而外销占比不断下降;比较蚕丝供需的测算数据,发现蚕丝供过于求与供不应求交替出现,2018年处于供过于求状态;如果国内丝绸消费需求能进一步释放和增长,预测未来3年我国蚕丝供过于求的趋势会得到缓和。 展开更多
关键词 蚕丝 供给量 需求量 测算 预测
文章速递类型特色视域下高职院校产教融合体系构建研究 认领
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作者 陈正江 《黑龙江高教研究》 CSSCI 北大核心 2020年第9期127-131,共5页
党的十九大报告提出完善职业教育和培训体系,深化产教融合、校企合作,在此背景下,高职教育亟须在类型特色视域观照下重塑产教融合的理念与实践。文章以类型特色为切入点,对高职院校产教融合的特征与供求展开分析,在把握外部产业需求与... 党的十九大报告提出完善职业教育和培训体系,深化产教融合、校企合作,在此背景下,高职教育亟须在类型特色视域观照下重塑产教融合的理念与实践。文章以类型特色为切入点,对高职院校产教融合的特征与供求展开分析,在把握外部产业需求与内在教育取向的基础上,通过提升高职教育专业服务能力、构建高效率技术技能积累体系、以1+X证书制度为试点开展高质量培训、牵头培育组建高水平产教融合联盟、打造产教融合校企合作命运共同体等途径构建产教融合体系,实现内在"教育性"与外部"经济性"的统一,充分彰显自身类型特色,推进高职教育高质量发展。 展开更多
关键词 高职教育 类型特色 产教融合 需求 供给 体系
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文章速递我国老年公共体育服务体系的结构解析与治理策略研究 认领
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作者 朱二刚 孙绪贵 +2 位作者 陶志轩 周超 章驰 《体育研究与教育》 2020年第5期15-20,共6页
采用文献资料、逻辑分析等方法,以健康老龄化为背景,对我国老年公共体育服务体系的结构特征进行了解析。研究认为:我国老年公共体育服务体系的问题主要表现在“均等共享”的价值理念难以实现、需求与供给不均衡、多元供给主体责任不明... 采用文献资料、逻辑分析等方法,以健康老龄化为背景,对我国老年公共体育服务体系的结构特征进行了解析。研究认为:我国老年公共体育服务体系的问题主要表现在“均等共享”的价值理念难以实现、需求与供给不均衡、多元供给主体责任不明、社区作用发挥不够等方面。这些问题使得老年群体的体育需求不能得到有效满足。由此提出:建立需求导向型的老年公共体育服务供给机制、构建政府为主导的多元主体供给结构模型、培育和扶持老年体育社会组织、加强老年社会体育指导员和志愿者队伍建设、搭建以社区为基础的老年公共体育服务平台、完善老年公共体育服务监管保障机制等治理策略,以期为维护老年人合法体育权益、推进健康老龄化提供参考。 展开更多
关键词 老年人 公共体育服务 老年体育 需求 供给 结构特征 治理策略
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Bibliometric Analysis of Drug Supply Chain in China 认领
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作者 Cao Linlin Wu Zhi’ang 《亚洲社会药学》 2020年第3期159-170,共12页
Objective To study the development trend and hotspot of China’s drug supply chain in terms of bibliometrics to provide some reference for transforming and upgrading China’s pharmaceutical circulation industry.Method... Objective To study the development trend and hotspot of China’s drug supply chain in terms of bibliometrics to provide some reference for transforming and upgrading China’s pharmaceutical circulation industry.Methods Based on the data related to drug supply chain research from 1999 to 2019 collected by CNKI,Wanfang and VIP,software such as bibliographic information co-occurrence mining system(BICOMS)version 2.0,University of California Irvine Network(UCINET)version 6.0,and graphical clustering toolkit were used to measure and conduct visual analysis of the domestic drug supply chain research literature.Results and Conclusion Through literature analysis,it can be seen that the current research on drug supply chain in China mainly focuses on drug procurement and cost control,zero inventory control of hospital pharmacy,optimization and risk management of drug supply chain,and information of supply chain and logistics of pharmaceutical enterprises.Combining with the“Internet+”and other models,drug supply chain enterprise should optimize its management process according to the relevant national policy,promote information construction in all links of the supply chain,improve its transparency and ensure the quality and safety of drugs.The improvement of supply chain efficiency will enhance the transformation and upgrading of China’s pharmaceutical circulation industry. 展开更多
关键词 drug supply chain BIBLIOMETRICS visual analysis development trend
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需求导向下我国西北地区体育公共服务供给困境及实施路径研究 认领
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作者 杨蔚怡 《当代体育科技》 2020年第12期212-213,共2页
体育公共服务的供需关系是一个框架内的对立统一,供需导向各有侧重点。本文通过供给导向和需求导向2个维度,以甘肃省数据分析为例,研究我国西北地区体育公共服务供需状况,分析供给导向下的体育公共服务存在的问题及困境,分析问题原因,... 体育公共服务的供需关系是一个框架内的对立统一,供需导向各有侧重点。本文通过供给导向和需求导向2个维度,以甘肃省数据分析为例,研究我国西北地区体育公共服务供需状况,分析供给导向下的体育公共服务存在的问题及困境,分析问题原因,调整体育公共服务供给结构,建立以需求导向的体育公共服务实施路径,促使体育公共服务实现动态供需平衡。 展开更多
关键词 需求导向 供给导向 体育公共服务
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农村金融支持新型农业经营主体的供给分析——以河南省为例 认领
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作者 王贺丽 《湖南工业职业技术学院学报》 2020年第3期41-45,共5页
伴随着我国农业供给侧结构性改革工作向纵深发展,以规模化、产业化、组织化为显著特征的新型农业经营主体逐渐成为农业生产经营的主体.农村金融作为新型农业经营主体长远发展的重要支撑,对于新型农业经营主体的生产规模、经济效益与经... 伴随着我国农业供给侧结构性改革工作向纵深发展,以规模化、产业化、组织化为显著特征的新型农业经营主体逐渐成为农业生产经营的主体.农村金融作为新型农业经营主体长远发展的重要支撑,对于新型农业经营主体的生产规模、经济效益与经营体系建设具有十分重要的促进作用.本文从分析农村金融与新型农业经营主体的内涵与特征入手,分析了河南新型农业经营主体的金融需求现状、农村金融支持新型农业经营主体的供给情况,提出了基于融资渠道拓宽、保险体系完善和营商环境优化的农村金融支持新型农业经营主体的发展策略. 展开更多
关键词 农村金融 新型农业经营主体 供给
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2019年中国猪肉市场回顾及未来走势 认领
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作者 聂凤英 梁丹辉 《猪业科学》 2020年第2期48-50,4共4页
由于受非洲猪瘟疫情等因素的影响,2019年猪肉产能出现大幅下滑,生猪存栏和能繁母猪存栏连续10个月下降,猪肉供应减少,进口量激增;猪肉消费减少,白条鸡、鸡蛋等替代品消费增加;生猪、猪肉和仔猪价格明显上涨,猪肉稳价保供压力大。2020年... 由于受非洲猪瘟疫情等因素的影响,2019年猪肉产能出现大幅下滑,生猪存栏和能繁母猪存栏连续10个月下降,猪肉供应减少,进口量激增;猪肉消费减少,白条鸡、鸡蛋等替代品消费增加;生猪、猪肉和仔猪价格明显上涨,猪肉稳价保供压力大。2020年,生猪产能将逐渐恢复,加上猪肉进口的扩大和储备肉的投放,猪肉供销将趋于稳定。 展开更多
关键词 猪肉 供给 消费 价格
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Safeguarding Food Supply China's production, reserves enough to ensure food securitydespite impact of the coronavirus 认领
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作者 Xia Yuanyuan 《中国与非洲:英文版》 2020年第5期34-35,共2页
China’s production,reserves enough to ensure food security despite impact of the coronavirus Recently,27-year-old Beijing resident Su Ying and her parents had a disagreement on whether to snap up sacks of rice and fl... China’s production,reserves enough to ensure food security despite impact of the coronavirus Recently,27-year-old Beijing resident Su Ying and her parents had a disagreement on whether to snap up sacks of rice and flour for hoarding."Upon hearing that some countries are restricting rice exports due to the spread of the novel coronavirus disease(COVID-19)。 展开更多
关键词 Food Supply PRODUCTION CORONAVIRUS
民族农村地区养老服务供需现状及养老服务体系建设研究 认领
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作者 高矗群 张开宁 《卫生软科学》 2020年第6期33-36,共4页
[目的]分析西南民族农村地区的养老供需现状,为民族农村地区养老服务体系的完善提出对策。[方法]采用立意整群抽样,对665名傣族、侗族、藏族农村居家老人进行调查,运用描述性统计方法对3个民族农村地区的养老供需现状进行分析。[结果]... [目的]分析西南民族农村地区的养老供需现状,为民族农村地区养老服务体系的完善提出对策。[方法]采用立意整群抽样,对665名傣族、侗族、藏族农村居家老人进行调查,运用描述性统计方法对3个民族农村地区的养老供需现状进行分析。[结果]民族地区农村老年人多发慢性病且失能率高,倾向于有社会养老服务支撑的居家养老意愿强(傣族97.4%、侗族96.6%,藏族99.6%);自报告医疗保健康复需求高居首位(傣族占81.28%,侗族占87.66%,藏族占67.80%);养老机构建设投入增加、养老机构数与床位数增加,但集中分布在州、县、乡;养老院环境显著改善,但入住率较低,傣族为11.03%,侗族为22.61%,藏族为7.2%。[结论]民族地区农村老人居家养老意愿强,现有养老服务体系与养老需求脱节;家庭社区层面医养资源分离、投入少使多层次医养服务体系建设难落实;少数民族文化多元,加剧了服务体系建设的复杂性。 展开更多
关键词 需求 供给 养老服务体系 医养结合 少数民族
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Coronavirus Dynamics:The Undulating Playing Field 认领
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作者 Bongs Lainjo 《Psychology Research》 2020年第3期118-123,共6页
The goal of the paper is to conduct an exploratory review and analyses of the dynamics of the pandemic focusing on two themes:pandemic morbidity and vulnerable populations.Method:Review of literature,anecdotal evidenc... The goal of the paper is to conduct an exploratory review and analyses of the dynamics of the pandemic focusing on two themes:pandemic morbidity and vulnerable populations.Method:Review of literature,anecdotal evidence,and reports on the morbidity of COVID-19;including scope of its devastating effects in selected countries.Findings:The devastating effects of the coronavirus are felt across different vulnerable populations.These include the elderly,front line workers,marginalized communities,visible minorities,and more.Inadequate and sometimes conflicting remarks by“experts”have only contributed in exacerbating the confusion in the general population.However,compassion and empathy from different communities have had positive effects on mitigating some of the health outcomes like mental health and other health-related effects of the pandemic.Institutional support needs to be strengthened,especially with regard to individual risks and supply chain coordination:personal protection equipment(PPE),masks,swabs,reagents,etc.The challenge in Africa is especially daunting,because of limited and inadequate financial resources and infrastructure,as confirmed by the health budget allocations as a percentage of their respective GDP(gross domestic product).Discussion:The effects of the COVID-19 are producing unprecedented and catastrophic outcomes in many countries.These have been exacerbated by the level of unpreparedness and inadequate degrees of prevention and intervention strategies.With a few exceptions,the common and current intervention approach is driven by many unknowns including compilation of relevant reliable and compelling data sets.Vulnerable communities continue to suffer most:a situation that is highlighted in this essay as one attempt to remind institutions of their duty to provide appropriate support,including compassion and empathy to these populations.The repercussions of no or inadequate action are numerous,significant,and mind-boggling with unpredictable future outcomes and possible dire consequences.T 展开更多
关键词 coronavirus pandemic front line workers vulnerable populations compassion and empathy supply chain coordination unprecedented future outcomes relevant and compelling data sets protective personal equipment(PPE)
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Research on Application of Supply Chain Finance Based on Block Chain 认领
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作者 Zhen Xu Delong Gao 《商业经济研究(百图)》 2020年第3期30-36,共7页
Supply chain finance has played a positive role in solving the financing difficulties of small and medium-sized enterprises.However,in the actual implementation process,there are still problems such as information asy... Supply chain finance has played a positive role in solving the financing difficulties of small and medium-sized enterprises.However,in the actual implementation process,there are still problems such as information asymmetry,doubts about the authenticity of trade background,and high operational risks,which seriously restrict the development of supply chain finance.However,block chain technology has the characteristics of de-centralization,data transparency,common maintenance and non-tampering.Applying this technology to supply chain finance can effectively solve the existing problems.Based on the research on the development status of traditional supply chain finance,this paper puts forward a new development mode of supply chain finance based on block chain technology,and through the analysis of typical cases,finally gives some policy suggestions for the development of block chain supply chain finance. 展开更多
关键词 Block chain Supply chain finance Dismantling and melting
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农民工终身职业培训供给问题分析与对策研究 认领
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作者 张路遥 《无锡职业技术学院学报》 2020年第1期9-11,共3页
农民工终身职业培训是农民工个人就业发展内在需要和社会经济转型发展的必然要求。当前我国农民工培训存在培训内容供需错位的现象,究其原因,既有培训顶层设计的问题,也有培训组织的问题,关键原因在于培训内容不符合农民工工作实际需要... 农民工终身职业培训是农民工个人就业发展内在需要和社会经济转型发展的必然要求。当前我国农民工培训存在培训内容供需错位的现象,究其原因,既有培训顶层设计的问题,也有培训组织的问题,关键原因在于培训内容不符合农民工工作实际需要,缺少需求调研和培训体系建设,因此建议结合网络技术进行调研、基础测试和课程体系推荐,提高培训的针对性和灵活性。 展开更多
关键词 农民工 职业培训 供给问题 对策
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2019年丁苯橡胶市场分析与预测 认领
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作者 张钺 肖岩 李文国 《弹性体》 CAS 2020年第4期72-77,共6页
从世界和中国两个角度,回顾了2019年SBR产业运行情况,并从产业面临的宏观环境、行业的竞争格局、上游的原料供给与下游的市场需求、市场价格变化、进出口情况等方面展望了2020年SBR行业发展趋势。
关键词 丁苯橡胶 供应 需求 价格 进出口
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Characteristics of groundwater and urban emergency water sources optimazation in Luoyang,China 认领
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作者 YANG Liu ZHANG Ying-ping +2 位作者 WEN Xue-ru PEI Li-xin LIU Bing 《地下水科学与工程:英文版》 2020年第3期298-304,共7页
The construction of emergency water sources is the material basis for ensuring urban water safety,and it is also an inherent requirement for maintaining social stability and development.The hydrogeological characteris... The construction of emergency water sources is the material basis for ensuring urban water safety,and it is also an inherent requirement for maintaining social stability and development.The hydrogeological characteristics of groundwater in Luoyang City from the aspects of the division of groundwater aquifer groups,water yield property and groundwater dynamics were described in this paper.Two emergency water sources were selected on basis of comprehensively considering groundwater resources and ecological environmental effects,groundwater quality and exploitation technology,etc.Then it further analysed the aquifer types,water yield properties and groundwater recharge,runoff and discharge conditions of the two emergency water sources,and evaluate the groundwater resources quantity of the water sources.The results are that the shallow underground aquifer in Luoyang City is thick,coarse,and stable in lithology and thickness.The two water sources enjoy good exploitation potential and can be used as backup water sources to supply water in the event of a water source crisis. 展开更多
关键词 Groundwater characteristics Emergency water sources Exploitation potentiality Urban water supply risk Luoyang City
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