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Optimizing the application of a novel harvest aid to improve the quality of mechanically harvested cotton in the North China Plain

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Journal of Integrative Agriculture 2021年第11期20卷 2892-2899页

作者： MENG Lu ZHANG li-zhen QI hai-kun DU Ming-wei ZUO Yan-li ZHANG Ming-cai TIAN Xiao-li li Zhao-hu Engineering Research Center of Plant Growth Regulator Ministry of Education/College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193P.R.China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193P.R.China Hebei Cottonseed Engineering Technology Research Center Hejian 062450P.R.China

Defoliation is an indispensable step in cotton production with mechanical harvesting,especially in the North China Plain(NCP)where mechanical harvesting is limited by a large proportion of green leaves and unopened bolls at harvest time due to insufficient thermal *** is essential to quantify the optimal use of defoliation products while minimizing yield and quality loss in *** objective of this study was to test the effect of a new defoliant Xinsaili(XSL,a compound of 10% thidiazuron and 40% ethephon)on the spatial distribution of cotton leaves and bolls,yield and quality in the *** were four treatments:XSL 1800 m L ha^(-1),XSL 2700 m L ha^(-1),XSL splitted into two equal applications(1350 m L ha^(-1) for each),and XSL-free(water)*** experiments were conducted in Hebei,China in *** the defoliant treatments did not significantly affect cotton yield and fiber quality compared with the water *** harvest time,the rate of open bolls under XSL 2700 m L ha^(-1) was 13.5% higher than that under XSL-free control,while the other two treatments showed no significant difference,across the two *** percentage of the three XSL treatments showed no difference,but they were on average 42.2% higher than that of XSL-free *** year-round effect of the defoliant XSL was significant,indicating that climate factors would affect its *** was concluded that the optimal dose of XSL in the NCP was 2700 m L ha^(-1),and it was unnecessary to split it into two *** results would promote cotton mechanical harvesting and reduce the labor cost of cotton production in China.

关键词： thidiazuron ethephon defoliation leaf distribution yield components

Applicability of 9Be global optical potential to description of 8,10,11B elastic scattering

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Chinese Physics C 2020年第3期44卷 65-72页

作者： Yong-li Xu Yin-Lu Han hai-Ying liang Zhen-Dong Wu hai-Rui Guo Chong-hai cai College of Physics and Electronic Science Shanxi Datong UniversityDatong 037009China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of Applied Physics and Computational Mathematics Beijing 100094China Department of Physics Nankai UniversityTianjin 300071China

We achieved a set of 9Be global phenomenological optical model potentials by fitting a large experimental dataset of the elastic scattering observable for target mass numbers from 24 to *** obtained 9Be global optical model potential was applied to predict elastic-scattering angular distributions and total reaction cross-sections of 8,10,11B *** predictions are made by performing a detailed analysis comparing with the available experimental ***,these elastic scattering observables are also predicted for some lighter targets outside of the given mass number range,and reasonable results are *** physical explanations for the observed differences are also discussed.

关键词： optical model potential elastic-scattering angular distribution total reaction cross section

Decomposition analysis of energy-related carbon dioxide emissions in the iron and steel industry in China

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Frontiers of Environmental Science & Engineering 2012年第2期6卷 265-270页

作者： Wenqiang SUN Jiuju cai hai YU Lei DAI SEP Key Laboratory of Eco-industry Institute of Thermal and Environmental EngineeringNortheastern UniversityShenyang 110819China

This work aims to identify the main factors influencing the energy-related carbon dioxide （CO2） emissions from the iron and steel industry in China during the period of 1995-2007. The logarithmic mean divisia index （LMDI） technique was applied with period-wise analysis and time-series analysis. Changes in energy- related CO2 emissions were decomposed into four factors： emission factor effect, energy structure effect, energy consumption effect, and the steel production effect. The results show that steel production is the major factor responsible for the rise in CO2 emissions during the sampling period; on the other hand the energy consump- tion is the largest contributor to the decrease in C02 emissions. To a lesser extent, the emission factor and energy structure effects have both negative and positive contributions to C02 emissions, respectively. Policy implications are provided regarding the reduction of C02 emissions from the iron and steel industry in China, such as controlling the overgrowth of steel production, improving energy-saving technologies, and introducing low-carbon energy sources into the iron and steel industry.

关键词： carbon dioxide (C02) emissions decomposi-tion analysis logarithmic mean divisia index (LMDI)technique time-series analysis

Study of the relationship between the content of the rare earth element Eu in rice plants and in Nilaparvata lugens （Hemiptera： Delphacidae）

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Insect Science 2012年第1期19卷 13-20页

作者： Min Yang Jin-cai Wu hai-Nan Gu School of Plant Protection Yangzhou UniversityYangzhouChina Indooroopilly Science Centre Department of Primary Industries and FisheriesQueensland 4068Australia

The current study investigated changes in the content of the rare earth element Europium （Eu） in roots, shoots and leaves of rice plants and in Nilaparvata lugens Stal （Hemiptera： Delphacidae） using an Eu marker and hydroponic culture. The results showed that N. lugens infestation significantly reduced Eu content in roots, shoots and leaves of two rice varieties, Shenyou 1 and Xieyou 963. The Eu content in roots, shoots and leaves of the susceptible variety, Shenyou 1, was significantly higher than that in the resistant variety, Xieyou 963. The Eu content ofN. lugens fed on Shenyou 1 was significantly higher than of those fed on Xieyou 963. In addition, the Eu level was elevated at a higher density ofN. lugens infestation. Eu content in the bodies ofN. lugens was related to their weight and honeydew excretion, with a significant positive correlation. Thus, Eu content in the bodies ofN. lugens can be considered an index of the amount of phloem sap taken in by N. lugens because the amount of honeydew excretion is proportional to the amount of phloem sap consumed. The ratios of Eu content in N. lugens to that in roots, shoots and leaves of rice plants were elevated at a higher N. lugens infestation density. That ratio was maximal in leaves, was intermediate in shoots and was minimal in roots. There was no significant difference in ratios between the two plant varieties. An Eu marker may be useful in the screening of resistant varieties and in the study of the mechanisms of resistance.

关键词： markers Nilaparvata lugens rare earth element Eu rice

Rationally designing electrolyte additives for highly improving cyclability of liNi_(0.5)Mn_(1.5)O_(4)/Graphite cells

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Journal of Energy Chemistry 2024年第4期91卷 266-275页

作者： Zhiyong Xia Kuan Zhou Xiaoyan lin Zhangyating Xie Qiurong Chen Xiaoqing li Jie cai Suli li hai Wang Mengqing Xu Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina China Zhuhai CosMX Battery Co. Ltd.Zhuhai 519180GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety liBs Engineering Research Center of MTEES(Ministry of Education)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangzhouChina

High voltage is necessary for high energy lithium-ion batteries but difficult to achieve because of the highly deteriorated cyclability of the batteries.A novel strategy is developed to extend cyclability of a high voltage lithium-ion battery,liNi_(0.5)Mn_(1.5)O_(4)/Graphite(LNMO/Graphite)cell,which emphasizes a rational design of an electrolyte additive that can effectively construct protective interphases on anode and cathode and highly eliminate the effect of hydrogen fluoride(HF).5-Trifluoromethylpyridine-trime thyl lithium borate(LTFMP-TMB),is synthesized,featuring with *** anion TFMPTMB-tends to be enriched on cathode and can be preferentially oxidized yielding TMB and radical TFMP-.Both TMB and radical TFMP can combine HF and thus eliminate the detrimental effect of HF on cathode,while the TMB dragged on cathode thus takes a preferential oxidation and constructs a protective cathode *** the other hand,LTFMP-TMB is preferentially reduced on anode and constructs a protective anode ***,a small amount of LTFMP-TMB(0.2%)in 1.0 M liPF6in EC/DEC/EMC(3/2/5,wt%)results in a highly improved cyclability of LNMO/Graphite cell,with the capacity retention enhanced from 52%to 80%after 150 cycles at 0.5 C between 3.5 and 4.8 *** as-developed strategy provides a model of designing electrolyte additives for improving cyclability of high voltage batteries.

关键词： Electrolyte additive Design and synthesis Cyclability High voltage batteries Cathode and anode interphases

Efficient and accurate online estimation algorithm for zero-effort-miss and time-to-go based on data driven method

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Chinese Journal of Aeronautics 2019年第10期32卷 2311-2323页

作者： Hongxia li Huijie li Yuanli cai School of Electronic and Information Engineering Xi’an Jiaotong University

This paper introduces a novel and efficient algorithm for online estimation of zero-effortmiss and time-to-go based on data driven *** missile-target separations are utilized to construct the estimation models,and a practical Fisher fusion algorithm is derived to acquire the estimates with high accuracy and computational ***,the two parameters can be online estimated at a particular ***,the kinematics equations of the missile-target engagement are independent,and assumptions of the missile guidance system dynamics and behaviors of the missile and target are completely out of ***,the effectiveness and applicability are explicitly verified through various simulation scenarios.

关键词： Data driven Missile-target separations Online estimation Time-to-go Zero-effort-miss

Structural screening of phosphorus sulfur ternary hydride PSH_(6) with a high-temperature superconductivity at 130 GPa

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Frontiers of physics 2023年第2期18卷 205-211页

作者： Yu-Long hai He-Jin Yan Yong-Qing cai Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoTaipaMacaoChina

In our study,we constructed a series of inorganic nonmetallic ternary hydrides PSH6 by first-principles structural screening under pressure of 200 *** structural stability under lower pressure are *** on the structural stability,electronic and phonon properties,as well as the possible superconducting properties within the framework of Bardeen−Cooper−Schrieffer(BCS)theory,we show that PSH6 with space group possesses a superconducting transition temperature of 146 K at 130 *** the pressure range of 100−200 GPa,our work suggests that the ternary phosphorus-sulfur-hydrogen would act as a promising compositional and elemental space for achieving high-temperature superconductivity.

关键词： phosphoruses sulfur hydrides high-temperature superconductivity low-pressure structural screening

Graph Regularized L_p Smooth Non-negative Matrix Factorization for Data Representation

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IEEE/CAA Journal of Automatica Sinica 2019年第2期6卷 584-595页

作者： Chengcai Leng hai Zhang Guorong cai Irene Cheng Anup Basu the School of Mathematics Northwest University School of Mathematics and Information Sciences Nanchang Hangkong University Nanchang 330063 China the Department of Computing Science University of Alberta the Faculty of Information Technology & State Key Laboratory of Quality Research in Chinese Medicines Macao University of Science and Technology the College of Computer Engineering Jimei University the Department of Computing Science University of Alberta

This paper proposes a Graph regularized Lpsmooth non-negative matrix factorization(GSNMF) method by incorporating graph regularization and L_p smoothing constraint, which considers the intrinsic geometric information of a data set and produces smooth and stable solutions. The main contributions are as follows: first, graph regularization is added into NMF to discover the hidden semantics and simultaneously respect the intrinsic geometric structure information of a data set. Second,the Lpsmoothing constraint is incorporated into NMF to combine the merits of isotropic(L_2-norm) and anisotropic(L_1-norm)diffusion smoothing, and produces a smooth and more accurate solution to the optimization problem. Finally, the update rules and proof of convergence of GSNMF are given. Experiments on several data sets show that the proposed method outperforms related state-of-the-art methods.

关键词： Data clustering dimensionality reduction graph regularization Lp smooth non-negative matrix factorization(SNMF)

Synthesis of Mg_2B_2O_5 whiskers via coprecipitation and sintering process

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International Journal of Minerals,Metallurgy and Materials 2012年第10期19卷 969-972页

作者： Dong-hai Zhu Xue-ying Nai Cheng-cai Zhu Feng-qin Guo Shao-ju Bian Wu li Qinghai Institute of Salt Lakes Chinese Academy of Sciences Xining 810008 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department o f Basin Education Qinghai University Xining 810016 China

Mg2B2O5 whiskers with high aspect ratio were synthesized by coprecipitation and sintering process using MgCl2-6H2O, H3BO3, and NaOH as raw materials and KCl as a flux. Their formation process was investigated by thermogravimetry and differential scanning calo- rimetry （TG-DSC）, X-ray diffraction （XRD）, and scanning electron microcopy （SEM）. It is found that the products synthesized at 832℃ are monoclinic Mg2B205 whiskers with a diameter of 200-400 nm and a length of 50-80 μm. Transmission electron microscopy （TEM） and selected area electron diffraction （SAED） analyses show that the whiskers obtained at 832℃ are single crystalline and grow along with the [010] direction. The growth mechanism of Mg2B2O5 whiskers was also presented.

关键词： magnesium borate coprecipitation sintering crystal whiskers crystal growth microstructure