检索结果-南通市图书馆

Analysis on preserving or increasing the value of social security funds under the new normal economy in China

在线全文

学校读者我要写书评

暂无评论

International English Education Research 2015年第6期 83-85页

作者： longquan xu Ge Peng School of Management Shanghai University of Engineering Science Shanghai China

The ＂new normal＂ is the current stage of development of China＇s economy. The ＂new＂ in new normal means different to past; the ＂normal＂ means relatively stable. For a period of time in the future, the decrease of potential growth rate has become an indisputable fact. Social security fund is an important source of funds for the protection of people＇s livelihood, whose every movement often attract much attention. Under the situation of new normal economy, how to ensure the preserving or increasing value of social security funds on the premise of security is the core task in the operations management of social security fund investment. At present, there are some difficulties in the development of the social security funds, such as the management system and operation mechanism are not perfect, some institutional measures have not been fully implemented and the progress of the law and regulations is slow. In this paper, we will put forward some corresponding improvement measures, such as expand the scope of social security fund investment, accelerate the implementation of the nominal account system and strengthen the actuarial management of social security fund.

关键词： The new normal economy Social security fund Preserve or increase the value.

The analysis of commissioned risk in social security fund investment process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International English Education Research 2015年第6期 15-18页

作者： Xing Yuange longquan xu Shanghai University of Engineering Science

The key to sustainability of social security fund is increasing its value, while the key to increasing the value of the social security fund is income of agency entrusted investment. Agency relationship of social security Fund involves four agents, among which the entrustment between National Council for Social Security Fund （SSF） and social security fund management company is a key element. Due to information asymmetry phenomenon in the entrustment management process, the fund needed to establish the appropriate entry and exit criteria, and relying on a third party to avoid agency risks.

关键词： Social security funds Appreciation Agency.

Efficient InGaN-based yellow-light-emitting diodes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2019年第2期7卷 144-148页

作者： FENGYI JIANG JIANLI ZHANG longquan xu JIE DING GUANGxu WANG XIAOMING WU XIAOLAN WANG CHUNLAN MO ZHIJUE QUAN XING GUO CHANGDA ZHENG SHUAN PAN JUNLIN LIU National Institute of LED on Silicon Substrate Nanchang University Nanchang Yellow Green Lighting Company Limited

Realization of efficient yellow-light-emitting diodes(LEDs) has always been a challenge in solid-state *** effort has been made, but only slight advancements have occurred in the past few decades. After comprehensive work on InGaN-based yellow LEDs on Si substrate, we successfully made a breakthrough and pushed the wall-plug efficiency of 565-nm-yellow LEDs to 24.3% at 20 A∕cm^2 and 33.7% at 3 A∕cm^2. The success of yellow LEDs can be credited to the improved material quality and reduced compressive strain of InGaN quantum wells by a prestrained layer and substrate, as well as enhanced hole injection by a 3 D pn junction with V-pits.

关键词： InGaN Si Efficient InGaN-based

Aerodynamic Super-Repellent Surfaces

在线全文

学校读者我要写书评

暂无评论

Research 2024年第2期2023卷 115-122页

作者： Fanfei Yu Jinlong Yang Ran Tao Yao Tan Jinpei Wang Dehui Wang longquan Chen Zuankai Wang xu Deng Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054P.R.China Department of Mechanical Engineering City University of Hong KongKowloonHong Kong Special Administrative Region 999077P.R.China School of Physics.University of Electronic Science and Technology of China Chengdu 610054P.R.China Department of Mechanical Engineering Hong Kong Polytechnic UniversityKowloonHong Kong Special Administrative Region 999077P.R.China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of ChinaShenzhen 518110P.R.China

Repelling liquid drops from engineering surfaces has attracted great attention in a variety of *** achieve efficient liquid shedding,delicate surface textures are often introduced to sustain air pockets at the liquid-solid ***,those surfaces are prone to suffer from mechanical failure,which may bring reliability issues and thus limits their ***,inspired by the aerodynamic Leidenfrost effect,we present that impacting drops are directionally repelled from smooth surfaces supplied with an exogenous air *** theoretical analysis reveals that the synchronized nonwetting and oblique bouncing behavior is attributed to the aerodynamic force arising from the air *** versatility and practicability of our approach allow for drop repellency without the aid of any surface wettability treatment and also avoid the consideration of mechanical stability issues,which thereby provides a promising candidate for the applications that necessitate liquid shedding,e.g.,resolve the problem of tiny raindrop adhesion on the automobile side window during driving.

关键词： thereby driving attributed

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

一种新型光致发光自愈合水凝胶的合成

高等学校化学学报 2022年第2期43卷 103-111页

作者：周永辉李尧吴雨轩田晶徐龙权费旭大连工业大学实验仪器中心大连116034 大连工业大学生物工程学院大连116034 大连工业大学轻工与化工学院大连116034

采用自由基聚合法制备了具有光致发光特性的自愈合水凝胶,解决了光致发光配合物在水相荧光猝灭的问题.通过分子设计,利用共价键将油溶性的含Eu稀土配合物引进水凝胶体系中,发现该配合物在水凝胶体系中稳定存在,不扩散.含Eu稀土配合物具... 详细信息

采用自由基聚合法制备了具有光致发光特性的自愈合水凝胶,解决了光致发光配合物在水相荧光猝灭的问题.通过分子设计,利用共价键将油溶性的含Eu稀土配合物引进水凝胶体系中,发现该配合物在水凝胶体系中稳定存在,不扩散.含Eu稀土配合物具有紫外光致发光的特性,赋予该水凝胶良好的可识别性.同时该水凝胶含有动态硼酸酯键,其快速愈合的特性使该水凝胶在受损后能短时间内修复损伤,为制备可发光水凝胶和可识别生物医用材料提供了新的思路.

关键词：水凝胶光致发光硼酸酯键自愈合稀土配合物

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

珠海市乡村地区的农业生态旅游发展初探

山西建筑 2016年第21期42卷 13-14页

作者：许龙权广州大学建筑与城市规划学院广东广州510000

分析了珠海市乡村地区农业生态旅游发展的机遇,针对该地区发展农业生态旅游的困境,从发展定位、基础建设、生态治理、品牌建设等方面,提出了珠海市发展可持续生态旅游的建议。

关键词：农业生态环境旅游产业乡村地区

在线全文

学校读者我要写书评

暂无评论

3D打印聚乳酸材料的改性

大连工业大学学报 2017年第3期36卷 198-200页

作者：范东风费旭徐龙权大连工业大学纺织与材料工程学院辽宁大连116034 大连工业大学实验仪器中心辽宁大连116034

采用溶剂共混的方法制备了聚乳酸(PLA)、聚乙二醇(PEG)、聚己内酯(PCL)共混材料,研究了不同比例的PLA、PEG、PCL共混材料的亲水性、热性能和降解特性。结果表明制备的共混材料为部分相容体系;PEG的加入改善了共混膜的亲水性和加工性;当... 详细信息

采用溶剂共混的方法制备了聚乳酸(PLA)、聚乙二醇(PEG)、聚己内酯(PCL)共混材料,研究了不同比例的PLA、PEG、PCL共混材料的亲水性、热性能和降解特性。结果表明制备的共混材料为部分相容体系;PEG的加入改善了共混膜的亲水性和加工性;当PEG的质量分数从5%升到20%,共混膜接触角由73.8°下降到66°;PCL的加入能够调节共混膜的降解时间。

关键词：聚乳酸聚乙二醇聚己内酯共混材料 3D打印

人参皂苷β-葡萄糖苷酶基因的毕赤酵母载体构建及生物转化

在线全文

学校读者我要写书评

暂无评论

高等学校化学学报 2018年第11期39卷 2451-2457页

作者：刘欣茹刘春莹徐龙权宋建国鱼红闪大连工业大学生物工程学院大连116034 大连大学生命科学与技术学院大连116622

将人参皂苷β-葡萄糖苷酶(Glu GF)基因与表达载体p PIC9K连接,构建重组质粒,转化至毕赤酵母中表达,并用于人参皂苷Rb1的催化转化.研究结果表明,成功构建了重组表达质粒p PIC9K-GluGF,转化后筛选到阳性重组毕赤酵母菌.重组菌产酶的最佳... 详细信息

将人参皂苷β-葡萄糖苷酶(Glu GF)基因与表达载体p PIC9K连接,构建重组质粒,转化至毕赤酵母中表达,并用于人参皂苷Rb1的催化转化.研究结果表明,成功构建了重组表达质粒p PIC9K-GluGF,转化后筛选到阳性重组毕赤酵母菌.重组菌产酶的最佳甲醇诱导体积为0. 5%,诱导时间为168 h.重组菌诱导培养制备的粗酶液具有Glu GF的活性,可以水解人参皂苷Rb1,产物中皂苷C-K含量达到0. 09 mg/mL,粗酶液中Glu GF的比活力为0. 67 U/mg.

关键词：人参皂苷β-葡萄糖苷酶人参皂苷Rb1 载体构建毕赤酵母生物转化

在线全文

学校读者我要写书评

暂无评论

MOCVD原位监测系统的设计与实现

华侨大学学报（自然科学版） 2018年第2期39卷 210-213页

作者：徐龙权许冬刘新卫方颂南昌大学国家硅基LED工程技术研究中心江西南昌330047 南昌大学信息工程学院江西南昌330031

设计以TSMF32028335和AD7656为核心的数据采集与处理系统,采用以太网芯片W5300实现开发板与上位机的TCP/IP通信.作为监控端的上位机,采用通过Delphi开发的集数据处理、存储、显示与监控于一体的平台,且具有良好的人机交互界面.应用于自... 详细信息

设计以TSMF32028335和AD7656为核心的数据采集与处理系统,采用以太网芯片W5300实现开发板与上位机的TCP/IP通信.作为监控端的上位机,采用通过Delphi开发的集数据处理、存储、显示与监控于一体的平台,且具有良好的人机交互界面.应用于自主研发的金属有机化合物化学气相沉积(MOCVD)设备,测试结果表明:该设计具有采集数据准确、通信快速稳定、人机界面友好、程序运行流畅的特点,完全符合工程控制要求.

关键词：原位监测 TSM320F28335 金属有机化合物化学气相沉积数据采集数据处理人机界面