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Cadmium pollution from phosphate fertilizers in arable soils and crops:an overview

Frontiers of Agricultural Science and Engineering 2019年第4期6卷 419-430页

作者： Andrea Giovanna NINO-SAVALA zhong zhuang Xin MA Andreas FANGMEIER Huafen LI Aohan TANG Xuejun LIU Institute of Landscape and Plant Ecology University of Hohenheim70599 StuttgartGermany College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China

The application of mineral and organic phosphorus fertilizers to arable land has greatly increased crop yield to meet the world food *** the other hand,impurities in these fertilizers,such as heavy metals,are being added to agricultural soils,resulting both from the raw materials themselves and the processes used to obtain the final ***,a non-essential and toxic heavy metal,has been found in relatively high amounts in common P fertilizers obtained from *** metal poses a high risk for soil fertility,crop cultivation,and plants in ***,human health might be compromised by the cadmium concentrations in agricultural and livestock products,due to the bioaccumulation effect in the food *** accumulation in the different matrixes is the result of the high mobility and flexible availability of this harmful *** review summarizes risks to human health,the factors influencing cadmium movement in soils and crop uptake,as well as common plant responses to its *** addition,it summarizes cadmium balances in soils,trends,long-term experiments,and further *** inputs and outputs in arable soil,together with their calculated concentrations,are compared between two different regions:the European countries(in particular Germany)and *** comparison appears useful because of the different proportions in the inputs and outputs of cadmium,and the diverse geographical,environmental and social ***,these variables and their influences on cadmium contamination improve the understanding of the pollution from phosphate fertilizers and will help to establish future mitigation policies.

关键词： soil pollution arable land crop production cadmium balance P fertilizer cadmium toxicity

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Spectral line narrowing effect induced by atomic coherence in a three-level Λ system

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Optoelectronics Letters 2007年第5期3卷 388-390页

作者： ZHANG Lian-shui YANG Li-jun LI Xiao-li zhuang zhong-hong GUO Qing-lin College of Physics Science and Technology Hebei University Baoding 071000 China

We present the spectral line narrowing effect in a Λ three-level atomic system where one transition is coupled by a coupling laser and the narrow feature is observed by probing the other transition with a weak laser. As coupling laser detuning increases the electromagnetically induced transparency resonance is observed to evolve into electromagnetically induced absorption resonance with sub-natural linewidth. The linewidth of the narrow spectral feature is studied as a function of coupling laser detuning and the atomic system parameters. The result is explained using density matrix density equation in the dressed-atom picture.

关键词：光谱学原子一致性收缩效应耦合激光器

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Exploring the impact of Nafion modifier on electrocatalytic CO_(2) reduction over Cu catalyst

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Journal of Energy Chemistry 2024年第1期88卷 543-551,I0012页

作者： Yingshi Su Yonghui Cheng Zhen Li Yanjia Cui Caili Yang Ziyi zhong Yibing Song Gongwei Wang Lin zhuang College of Chemistry&Chemical Engineering and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou 515063GuangdongChina College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina The Institute for Advanced Studies Wuhan UniversityWuhan 430072HubeiChina Department of Chemistry Engineering Guangdong Technion-Israel Institute of Technology(GTIIT)Shantou 515063GuangdongChina Technion-Israel Institute of Technology(IIT) Haifa 32000Israel

Nafion as a universal polymer ionomer was widely applied for nanocatalysts electrode ***,the effect of Nafion on electrocatalytic performance was often overlooked,especially for CO_(2)***,the key roles of Nafion for CO_(2)RR were systematically studied on Cu nanoparticles(NPs)*** found that Nafion modifier not only inhibit hydrogen evolution reaction(HER)by decreasing the accessibility of H_(2)O from electrolyte to Cu NPs,and increase the CO_(2)concentration at electrocatalyst interface for enhancing the CO_(2)mass transfer process,but also activate CO_(2)molecule by Lewis acid-base interaction between Nafion and CO_(2)to accelerate the formation of^(*)CO,which favor of C–C coupling for boosting C_(2)product *** to these features,the HER selectivity was suppressed from 40.6%to 16.8%on optimal Cu@Nafion electrode at-1.2 V versus reversible hydrogen electrode(RHE),and as high as 73.5%faradaic efficiencies(FEs)of C_(2)products were achieved at the same applied potential,which was 2.6 times higher than that on bare Cu electrode(~28.3%).In addition,Nafion also contributed to the long-term stability by hinder Cu NPs morphology ***,this work provides insights into the impact of Nafion on electrocatalytic CO_(2)RR performance.

关键词： Nafion modifier CO_(2)reduction Cu nanoparticles In situ ATR-SEIRAS C_(2)product

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基于优化小波变换神经网络的分布式新能源信息预测方法

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南京师范大学学报（工程技术版） 2024年第2期24卷 11-19页

作者：栾开宁庄重杨世海段梅梅孔月萍周雨奇张汀荃丁泽诚国网江苏省电力有限公司江苏南京210019 国网江苏省电力有限公司营销服务中心江苏南京210019

分布式新能源发电是低碳化电力系统中重要的一部分.随着分布式新能源在城市电网中的占比逐渐增加,负荷随机波动和天气随机变化对于城市电网的影响日益增强,对分布式新能源信息的预测准确性提出了更高的要求.目前,分布式新能源的主要发... 详细信息

分布式新能源发电是低碳化电力系统中重要的一部分.随着分布式新能源在城市电网中的占比逐渐增加,负荷随机波动和天气随机变化对于城市电网的影响日益增强,对分布式新能源信息的预测准确性提出了更高的要求.目前,分布式新能源的主要发电方式是分布式光伏发电以及分布式风力发电.城市用电负荷的变化兼具周期性和随机性,而风速和辐照强度等因素分别对于分布式风力发电和分布式光伏发电有重要影响.为了准确预测出分布式新能源的信息,构建了基于小波变换神经网络的分布式新能源信息预测方法.首先,通过分析分布式新能源的工作原理,建立分布式新能源的模型;然后,优化小波变换神经网络,以风力发电和光伏发电为例对负荷用电功率和辐照强度等对电网作用显著的参数进行预测;最后,算例验证模型对分布式新能源信息进行预测的准确性.

关键词：分布式新能源负荷预测辐照强度预测城市电网小波变换神经网络

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Synthesis and Crystal Structure of Ni3（admt）6（NCS）6·C2H5OH·2H2O

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Chinese Journal of Structural Chemistry 2000年第2期19卷 81-85页

作者： LIU Jia Cheng SONG You zhuang Jin zhong * YOU Xiao Zeng (Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093) HUANG XIAO Ying HUANG Zi Xiang(State Key Laboratory of Stru Coordination Chemistry Institute State Key Lab. of Coord. Chemistry Nanjing University Nanjing 210093 China State Key Lab. of Struct. Chemistry Fujian Inst. Res. Struct. of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China

Reaction of nickel (II) perchlorate with 4 amino 3,5 dimethyl 1,2,4 triazole (admt) and NH 4NCS gave a trinuclear complex Ni 3(admtrz) 6(NCS) 6·C 2H 5OH·2H 2O, C 32 H 58 N 30 Ni 3O 3S 6. The compound crystallizes in the orthorhombic space group Pbca (#61) with a=13.551(3), b=25.146(6), c=16.553(4) , V=5640(2) 3, Z=4, M r=1279.47, D c =1.507 g/cm 3 ; μ (Mo Kα )=12.70 cm -1 and F (000)=2656. The final refinement with 2543 observed reflections is converged with R =0.058 and R w =0.069. In the Ni 3(admt) 6(NCS) 6 molecule, the central nickel atom is coordinated in a distorted octahedral environment by four triazole bridges and two thiocyanate bridges. The terminal nickel atoms are in addition coordinated by two thiocyanate and one admtrz ligand, and thus also have a distorted octahedral geometry. Ni-N distances are 2.040(7)-2.222(7), Ni-Ni distances are 3.411(1).

关键词： trinickel(II) complex 4 amino 3 5 dimethyl 1 2 4 triazole thiocyanate crystal structure

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论政治经济学与政治哲学的理论渊源

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河南大学学报（社会科学版） 2015年第6期55卷 26-32页

作者：庄忠正中国人民大学马克思主义学院北京100872

现代政治哲学不仅以"自然状态"为逻辑起点,开创了文明社会的模式,而且强调"舒适地自身保存之正当",日益关注经济。亚当·斯密进一步使它的重心从政治哲学转向经济学。他不仅使霍布斯体系自由化和商业化,而且把人类社会的发展落脚于商业... 详细信息

现代政治哲学不仅以"自然状态"为逻辑起点,开创了文明社会的模式,而且强调"舒适地自身保存之正当",日益关注经济。亚当·斯密进一步使它的重心从政治哲学转向经济学。他不仅使霍布斯体系自由化和商业化,而且把人类社会的发展落脚于商业社会,使它与文明社会等同起来。更甚者,亚当·斯密把文明社会的蓝图建构在每个人无止境地追求财富利益的满足之上。所以,政治哲学为经济学所取代,政治让位于经济,成为经济的衍生物。政治哲学向政治经济学的转向,使"财富表现为生产的目的",人的依赖关系变成物的依赖关系,造成"个人现在受抽象统治"。

关键词：政治经济学政治哲学社会契约商业社会

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Large-aperture Telescope Tracking Control Based on Time-synchronization Strategy

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Research in Astronomy and Astrophysics 2024年第3期24卷 34-46页

作者： Yun Li Yu Ye Shi-Hai Yang Ling-Zhe Xu Jin Xu Hai Wang zhuang-zhuang Deng Rui-Qiang Liu Xiao-Jie Gu Bo-zhong Gu Nanjing Institute of Astronomical Optics&Technology Chinese Academy of SciencesNanjing 210042China CAS Key Laboratory of Astronomical Optics&Technology Nanjing Institute of Astronomical Optics&TechnologyNanjing 210042China University of Chinese Academy of Sciences Beijing 100049China

A time-synchronization strategy for packetized transmission of target position about a large-aperture telescope observation control system has been proposed in this *** with the existing telescope tracking strategy,the target position packing and sending strategy based on the time synchronization method proposed in this paper has the advantages of high stability and ***,the telescope tracking observation control method was elaborated in this paper,including the motion pattern during telescope ***,the strategy for packetizes transmission of target positions based on time-synchronization is established and lists the detailed ***,the performance of the tracking strategy is verified using the 2.5 m telescope for the simulated uniform speed star and the blind-tracking fixed star HIP 31216,*** test results show that the accuracy root mean square of the tracking strategy proposed in this paper is less than 0".02 at 30 minutes,and the performance is much better than the design requirement of 0".*** most important advantage of this tracking strategy is that the telescope can guarantee normal tracking for a certain period of time even if the hardware or software of the host computer is abnormal.

关键词： miscellaneous-telescopes-methods observational-methods analytical

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高压蒸气换热器在聚酯装置中的应用

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聚酯工业 2024年第3期37卷 1-3页

作者：梁松华余锡攀冯斌朱志华张雪丰庄耀中新凤鸣集团股份有限公司浙江桐乡314500

聚酯生产所需的热量传递是通过有机热载体强制循环来完成。目前主流的导热油加热系统是将导热油直接加热,通过高温油泵进行强制液相循环,将加热后的导热油送到用热设备,换热完成后再由用热设备循环至锅炉区再加热,形成一个完整循环的加... 详细信息

聚酯生产所需的热量传递是通过有机热载体强制循环来完成。目前主流的导热油加热系统是将导热油直接加热,通过高温油泵进行强制液相循环,将加热后的导热油送到用热设备,换热完成后再由用热设备循环至锅炉区再加热,形成一个完整循环的加热系统。普通的燃煤锅炉的能源利用效率仅有80%~85%,未被充分利用的热量往往造成了能源浪费。通过配置耐高压换热器,利用高压水蒸气对循环的有机热载体供热,将导热油顺利地加热到325~330℃,替代厂区内原有的锅炉加热有机热载体,此方式具有换热效率高、日常维护少及运行稳定等诸多优点,可为相关的研究提供一定的借鉴。

关键词：燃气锅炉导热油能源利用效率

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Sandpaper-templated Stretchable Immunosensing Electrodes for Sub-picomolar Progesterone Detection

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Chemical Research in Chinese Universities 2024年第5期40卷 874-880页

作者： LI Zhaoxian MENG Xingyu FANG Chuyao YI Zhenkai WU Yaoyao LIU Xuanxuan zhong Wei ZHANG Limei XIE zhuang School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of EducationSun Yat-sen UniversityGuangzhou510275P.R.China Reproductive Medicine Center Department of Obstetrics and Gynecologythe First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou510080P.R.China

Female hormone detection,particularly non-invasive monitoring progesterone(P4)levels in body fluids,plays a critical role in female health management and disease ***,the challenge still exists because of the ultralow abundance of P4(<100 pmol/L)in sweat and saliva,necessitating highly sensitive methods for wearable ***,we present a simple sandpaper-templated stretchable immunosensing electrode designed for ultra-sensitive detection of P4 at sub-picomolar level.A molding technique is employed to replicate the sandpaper textures to provide a microstructured elastomeric substrate for electrode *** microstructured surface coated with poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate)(PEDOT:PSS)/LiTFSI[LiTFSI=lithium bis(trifluoromethanesulfonyl)imide]provided a stretchable polymer electrode with high conductivity,and further decoration with gold nanoparticles(AuNPs)enabled the immunosensing for P4 by electrochemical impedance spectroscopy(EIS)*** adjusting the AuNPs deposition conditions,ultrasensitive detection of P4 is realized with a low limit of detection(LOD)of ca.10 fmol/L and a tunable dynamic range up toµmol/***,the stretchable electrode exhibits stable electrochemical performance,enabling the detection of P4 at sub-picomolar levels even under mechanical strain of 30%.This innovative electrochemical sensor holds significant promise for non-invasive,on-site monitoring of P4 levels in healthcare,as well as hormone detection in food safety and environment surveillance.

关键词： Progesterone Immunosensor Microstructured electrode Stretchable biosensor Electrochemical sensing

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AEO-3磷酸酯的可控制备及其钾盐在抗静电剂领域的应用

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纺织科学与工程学报 2024年第3期41卷 13-18页

作者：张雪丰禄倩倩庄耀中张凤鸣马剑斌杨振宇浙江新凤鸣化纤有限公司浙江桐乡314513 新凤鸣集团股份有限公司浙江桐乡314513

化学纤维由于本身吸湿性差,在纺丝过程中容易产生静电,需要添加纺丝油剂,抗静电剂作为纺丝油剂的重要组成成分,对于纺丝工艺和后道加工具有重要意义。以AEO-3为原料、P_(2)O_(5)为磷酸化试剂,经过酯化、水解和中和等步骤制备了AEO-3磷... 详细信息

化学纤维由于本身吸湿性差,在纺丝过程中容易产生静电,需要添加纺丝油剂,抗静电剂作为纺丝油剂的重要组成成分,对于纺丝工艺和后道加工具有重要意义。以AEO-3为原料、P_(2)O_(5)为磷酸化试剂,经过酯化、水解和中和等步骤制备了AEO-3磷酸酯钾盐型抗静电剂,主要探究了对合成工艺影响最大的投料比、酯化时间和水解时间对产物中单酯、双酯、游离磷酸、电导率和表面张力等的影响规律,实验结果表明:当AEO-3和P_(2)O_(5)的投料比为3:1、酯化时间为4 h,水解时间为4 h时,所制备的AEO-3磷酸酯钾盐型抗静电剂的效果最好,此时单酯含量高达62.4%,双酯含量为31.5%,1%含固量水溶液的电导率高达1702 us/cm,表面张力为30.6 mN/m,具有良好的抗静电效果。另外,该抗静电剂与化纤油剂主要成分矿物油(10#和15#白油)、月桂醇油酸脂等的相溶性好,具有实际应用价值。

关键词： AEO-3磷酸酯钾盐抗静电剂表面活性剂可控工艺化纤油剂

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