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Soil Quality Evaluation and Technology Research on Improving Land Capability——A Case Study on Huanghuaihai Plain in Shandong Province

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Agricultural Science & Technology 2014年第11期15卷 1960-1966页

作者：王存龙祝德成蒋文惠赵西强王红晋喻超伊飞山东省地质调查院山东济南250013

Based on the geochemical data obtained from the national project about the prevention and control of soil contamination, this paper explored the properties of soil chemical elements in Huanghuaihai Plain, Shandong Province. The results showed that among the grade-one nutritive elements in soil, organic matter, nitrogen and phosphorus were relatively deficient while potassium was rich. Meanwhile, as the grade-two nutritive elements, calcium oxide and magnesium oxide were relatively short and sulfur’s content was abundant. About the other beneficial and trace nutri-tive elements, iron oxide, manganese, molybdenum and boron were deficient, but the content of chlorine was high, hardly lack. The main barriers to improving land productivity were soil salinization and soil heavy metal contamination. The values of soil integrated fertility index that most of the soil in the study area is middle-lower fertilized. Specifical y, the low fertility area and lower fertility area are 6 1604 and 1 244 km2 respectively, occupying about 97.43% and 1.97% of the total area. The moderate fertility soil has an area of 172 km2, occupying about 0.27% of the total area. The higher fertility soil covers an area of 128 km2, while the high fertility area of only 76 km2. This article proposed scientific fertilization, elimination of soil obsta-cle, remediation of heavy-metal-contaminated soil and other effective measures to improve land productivity according to the basic investigation results, which provides a good technological support for the planning and development of good-quality and high-benefit agriculture.

关键词： Soil fertility soil-water-plant land productivity improvement Huanghuaihai Plain in Shandong Province

Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects

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Frontiers of Mechanical Engineering 2018年第1期13卷 66-73页

作者： Liang LUO Zhengyi JIANG Dongbin WEI Xiaogang wang cunlong ZHOU Qingxue HUANG School of Mechanical Materials Mechatronic and BiomedicalEngineering University of Wollongong Wollongong NSW 2522Australia School of Electrical Mechanical and Mechatronic System Universityof Technology Sydney NSW 2007 Australia School of Materials Science and Engineering Taiyuan University ofScience and Technology Taiyuan 030024 China

Micro-metal products have recently enjoyed high demand. In addition, metal microforming has drawn increasing attention due to its net-forming capability, batch manufacturing potential, high product quality, and rela- tively low equipment cost. Micro-hydromechanical deep drawing （MHDD）, a typical microforming method, has been developed to take advantage of hydraulic force. With reduced dimensions, the hydraulic pressure development changes; accordingly, the lubrication condition changes from the macroscale to the microscale. A Voronoi-based finite element model is proposed in this paper to consider the change in lubrication in MHDD according to open and closed lubricant pocket theory. Simulation results agree with experimental results concerning drawing force. Changes in friction significantly affect the drawing process and the drawn cups. Moreover, defined wrinkle indexes have been shown to have a complex relationship with hydraulic pressure. High hydraulic pressure can increase the maximum drawing ratio （drawn cup height）, whereas the surface finish represented by the wear is not linearly dependent on the hydraulic pressure due to the wrinkles.

关键词： micro-hydromechanical deep drawing micro-forming size effects lubrication Voronoi

柽柳沙鼠Cytochrome b基因的克隆和进化分析

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实验动物科学 2017年第4期34卷 43-49页

作者：庄太凤王存龙吕建祎刘欣杜小燕陈振文李长龙首都医科大学附属北京妇产医院儿科北京100026 首都医科大学基础医学院北京100069

目的对柽柳沙鼠线粒体Cyt b基因全序列进行测定,并对其进行鉴定及进化分析。方法根据已知柽柳沙鼠基因序列设计引物,采用PCR产物测序法,对目的片段进行测序鉴定。结合已公布啮齿类动物Cyt b基因序列,分析其碱基组成、遗传距离、并基于... 详细信息

目的对柽柳沙鼠线粒体Cyt b基因全序列进行测定,并对其进行鉴定及进化分析。方法根据已知柽柳沙鼠基因序列设计引物,采用PCR产物测序法,对目的片段进行测序鉴定。结合已公布啮齿类动物Cyt b基因序列,分析其碱基组成、遗传距离、并基于极大似然法和最大简约法构建系统进化树。结果获得柽柳沙鼠线粒体Cyt b基因全序列,其与长爪沙鼠和子午沙鼠均具有较高的同源性;进化分析结果显示,柽柳沙鼠与沙鼠属和仓鼠科动物遗传距离较近。柽柳沙鼠Cyt b基因碱基组成与沙鼠属和家鼠属动物相似,具有哺乳动物mt DNA基因特点。结论本研究为以柽柳沙鼠Cyt b基因序列为参考,初步计算了柽柳沙鼠与沙鼠属、家鼠属、仓鼠科及其它啮齿动物的进化关系,本研究为柽柳沙鼠及沙鼠属动物进化、线粒体的结构和功能研究奠定基础。

关键词：柽柳沙鼠细胞色素B 进化分析

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铜尾矿/聚磷酸铵阻燃聚氨酯的制备及研究

塑料工业 2024年第5期52卷 90-97页

作者：沈海峰高顺王国栋高业访付存龙刘秀玉唐刚安徽工业大学建筑工程学院安徽马鞍山243002

以聚磷酸铵(APP)/铜尾矿(CTS)为阻燃体系,采用一步全水发泡法制备硬质聚氨酯泡沫/聚磷酸铵/铜尾矿(RPUF/APP/CTS)复合材料。阻燃测试表明,RPUF-30APP的极限氧指数(LOI)达到24.0%,垂直燃烧测试达到V-0级别,其阻燃性明显提高。锥形量热测... 详细信息

以聚磷酸铵(APP)/铜尾矿(CTS)为阻燃体系,采用一步全水发泡法制备硬质聚氨酯泡沫/聚磷酸铵/铜尾矿(RPUF/APP/CTS)复合材料。阻燃测试表明,RPUF-30APP的极限氧指数(LOI)达到24.0%,垂直燃烧测试达到V-0级别,其阻燃性明显提高。锥形量热测试表明,RPUF-30APP的热释放速率峰值(PHRR)由纯样的300.5 kW/m^(2)降低至139.4 kW/m^(2),下降幅度高达53.6%;总热释放(THR)由纯样的40.0 MJ/m^(2)下降至28.1 MJ/m^(2),降低幅度高达29.8%,表明APP/CTS体系明显降低复合材料燃烧过程中的热释放,其火灾安全性提高。炭渣分析表明,CTS/APP/RPUF复合材料燃烧过程中形成了致密的炭层,提高了复合材料的阻燃性能。该研究为CTS提供了一个新的应用领域,并为提高聚合物的防火安全性铺平了道路。

关键词：硬质聚氨酯泡沫聚磷酸铵铜尾矿复合材料阻燃

Nf-κb在遗传性糖尿病长爪沙鼠多种组织中的表达状况

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实验动物科学 2018年第2期35卷 33-37页

作者：龚菁菁李小红王存龙李银银陈振文杜小燕首都医科大学基础医学院北京100069

目的探讨糖尿病长爪沙鼠6种组织中Nf-κb基因mRNA和蛋白的表达水平,以期探索长爪沙鼠糖尿病模型中Nf-κb的作用和靶器官。方法选取糖尿病长爪沙鼠和正常血糖沙鼠各6只,分别采集动物的骨骼肌、肝脏、脂肪、肾脏、心脏和脑组织,用Q-PCR和W... 详细信息

目的探讨糖尿病长爪沙鼠6种组织中Nf-κb基因mRNA和蛋白的表达水平,以期探索长爪沙鼠糖尿病模型中Nf-κb的作用和靶器官。方法选取糖尿病长爪沙鼠和正常血糖沙鼠各6只,分别采集动物的骨骼肌、肝脏、脂肪、肾脏、心脏和脑组织,用Q-PCR和Western blotting检测Nf-κb在各组织中mRNA和蛋白表达水平。结果与对照动物相比,在糖尿病长爪沙鼠的肌肉、肾脏和脑组织中,Nf-κb基因的mRNA水平表达有升高趋势,脂肪中则显著降低,肝脏和心脏中仅有降低趋势。检测蛋白水平发现除肝脏外,其他组织的结果均与mRNA水平一致。结论糖尿病长爪沙鼠脂肪组织是Nf-κb作用的靶器官。

关键词：长爪沙鼠 Ⅱ型糖尿病 Nf-κb 实时定量荧光PCR Western blot

Tunable luminescent CsPb_2Br_5 nanoplatelets:applications in light-emitting diodes and photodetectors

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Photonics Research 2017年第5期5卷 473-480页

作者： CENG HAN cunlong LI ZHIGANG ZANG MING wang KUAN SUN XIAOSHENG TANG JIHE DU Key Laboratory of Optoelectronic Technology(Ministry of Education) Chongqing University Key Laboratory of Low-Grade Energy Utilization Technologies and Systems (Ministry of Education) Chongqing University

Unlike organic–inorganic hybrid perovskites, all-inorganic cesium lead halide perovskites hold great promise for developing high-performance optoelectronic devices, owing to their improved stability. Herein, we investigate the perovskite-related CsPb_2 Br_5 nanoplatelets(NPLs) with tunable emission wavelengths via changing the reaction temperatures to 100°C, 120°C, and 140°C. Reaction temperature plays a key role in determining the shapes and thicknesses of the resulting CsPb_2 Br_5 NPLs. A higher temperature is in favor of the formation of smaller and thicker NPLs. To develop their potential applications in optoelectronic devices, green light emitting diodes(LEDs) and photodetectors based on CsPb_2 Br_5 NPLs are fabricated. The green LEDs based on CsPb_2 Br_5 NPLs synthesized at 140°C exhibit an excellent pure green emission(full width at half-maximum of <20 nm) and display a luminous efficiency of 34.49 lm∕W under an operation current of 10 m A. Moreover, the photodetector based on CsPb_2 Br_5 NPLs synthesized at 100°C has better performance with a rise time of 0.426 s, a decay time of0.422 s, and a ratio of the current(with and without irradiation) of 364%.

关键词： Cs Pb Br Tunable luminescent CsPb2Br5 nanoplatelets:applications in light-emitting diodes and photodetectors

Biological Evaluation and Structure Modification of （S）-3-Aminopyrrolidine Derivatives

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Chemical Research in Chinese Universities 2014年第1期30卷 91-97页

作者： XIN Tian ZHANG cunlong TAN Chunyan JIANG Yuyang Department of Chemistry Tsinghua University Beijing 100084 P. R. China State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology Shenzhen Anti-tumor Drug Development Engineering Laboratory Graduate School at Shenzhen Tsinghua University Shenzhen 518055 P. R. China Department of Pharmacology and Pharmaceutical Sciences School of Medicine Tsinghua University Beijing 100084 P. R. China

With our interest in （S）-3-aminopyrrolidine derivatives,we further screened inhibition activities of three hit compounds on many other kinases with the results demonstrating that this series of compounds shows better anticancer activities,which might result from the main block of PI3K/Akt signaling pathway and the inhibition of Abelson murine leukemia viral oncogene homolog（ABL） kinase,as well as some epidermal growth *** structure modification demonstrates that benzylsulfonyl group is the necessary functional group contributing to the biological activity that will be helpful to guiding us to optimize these （S）-3-aminopyrrolidine derivatives.

关键词： (S)-3-Aminopyrrolidine Biological evaluation Structure modification

Experimental Analysis on the Variable Polarity Plasma Arc Pressure

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Chinese Journal of Mechanical Engineering 2011年第4期24卷 607-611页

作者： JIANG Yi XU Binshi LUE Yaohui LIU cunlong LIU Ming National Science and Technology on Remanufacturing Laboratory Academy of Armored Force Engineering Beijing 100072 China Naval FlyingAcademy of China Huludao 125101 China

Arc pressure is one of the key factors for variable polarity plasma arc（VPPA） and welding pool formation. In this paper, VPPA pressure is measured by pressure transducer and U-tube barometer methods, and advantages and disadvantages of the two methods are compared. The effects of welding parameters, including with straight polarity（SP） current, reverse polarity（RP） current, time ratio of SP to RP, plasma gas flow rate, on VPPA pressure are investigated by using an orthogonal design. The experimental results indicate that the influencing degree of the welding parameters are in the order of plasma gas flow rate, SP current, time ratio of SP to RP, RP current. These results are important to researches of VPPA welding process and its mechanism. The physics behavior of VPPA is taken into account when the above influence mechanisms are analyzed. Firstly, according to the mechanism of the cooling compression to the arc, the compression to VPPA is enhanced with the increase of plasma gas flow, so the VPPA pressure would increase obviously. Secondly, although the temperature of VPPA is as a function of the welding current, the radius of VPPA is also enhanced. So the effects of SP current on VPPA pressure are inferior to the effects of plasma gas flow. Thirdly, VPPA pressure increases as a function of time ratio of SP to RP because the frequency of welding current influences the arc pressure to the some degree; Finally, the RP intervals are farther less than the SP intervals, so the influence to the pressure is minimal.

关键词： variable polarity plasma arc arc pressure orthogonal experiment

智能型无人系统科考母船“珠海云”运行维护管理探讨

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海洋开发与管理 2024年第4期41卷 161-170页

作者：谭琦范存龙周宁余泛泳南方海洋科学与工程广东省实验室(珠海)万山海上测试场平台珠海519082 上海海事大学交通运输学院上海201306 中国科学院深海科学与工程研究所三亚572000

文章对近年来科学考察船运行维护管理的研究现状进行梳理,从运维管理、科考船评价、共享协同和其他4个主题进行了文献分析。从科学调查、船舶及科考设备资产、船舶运营、船舶和设备安全、船员5个方面总结了调研的国内4家科学考察船拥船... 详细信息

文章对近年来科学考察船运行维护管理的研究现状进行梳理,从运维管理、科考船评价、共享协同和其他4个主题进行了文献分析。从科学调查、船舶及科考设备资产、船舶运营、船舶和设备安全、船员5个方面总结了调研的国内4家科学考察船拥船单位的运维管理经验。以“珠海云”为例,剖析了兼具科考船和智能船舶双重特征的船舶面临的运维管理经验不足、人员单薄和组织欠缺三大挑战。从5个方面介绍了“珠海云”现行的运维管理实践,即筹建运管中心雏形、分阶段掌控管理权、建立健全船舶管理体系、打造专业化人才梯队,以及培育中国海洋文化。研究结果旨在为新建科考船和智能船舶的运维管理提供参考。

关键词：智能船舶科学考察船珠海云运维管理

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