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Impacts of Defoliation on Morphological Characteristics and Non-Structural Carbohydrates of Populus talassica × Populus euphratica Seedlings

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1689-1703页

作者： Mengxu Su zhanjiang Han Zhen Zhao Xiaofeng Wu Jiaju Wu College of Life Science and Technology Tarim UniversityXinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim BasinAlar843300China Agricultural Science Research Institute of the First Division Xinjiang Production and Construction CorpsAlar843300China

Leaves are important‘source’organs that synthesize organic matter,providing carbon sources for plant ***,we used Populus talassica×Populus euphratica,the dominant species in ecological and timber forests,to simulate carbon limitation through artiﬁcial 2.%,50%,and 75%defoliation treatments and explore the effects on root,stem,and leaf morphology,biomass accumulation,and carbon allocation *** the 60th d after treat-ment,under 2.%defoliation treatment,the plant height,speciﬁc leaf weight,root surface area and volume,and concentrations of non-structural carbohydrates in stem and root were signiﬁcantly increased by 9.13%,2..00%,16.60%,31.95%,5.12.,and 9.34%,respectively,relative to the *** was no signiﬁcant change in the growth indicators under 50%defoliation treatment,but the concentrations of non-structural carbohydrates in the leaf and stem signiﬁcantly decreased,showing mostly a negative correlation between *** opposite was observed in the *** 75%defoliation treatment,the plant height,ground diameter,leaf number,single leaf area,root,stem,and total biomass were signiﬁcantly reduced by 14.15%,10.2.%,14.86%,11.31%,11.56%,2..87%,and 16.82.,respectively,relative to the *** concentrations of non-structural carbohydrates in various organs were signiﬁcantly reduced,particularly in the consumption of the starch concentrations in the stem and *** results indicated that carbon allocation strategies can be adjusted to increase the con-centration of non-structural carbohydrates in root and meet plant growth needs under 2.%and 50%***,75%defoliation signiﬁcantly limited the distribution of non-structural carbohydrates to roots and stems,reduced carbon storage,and thus inhibited plant ***-induced carbon limitation altered the carbon allocation pattern of ***×***,and the relationship between carbon reserves in roots and tree growth recovery after defoliation was *** study

关键词： Populus talassica×Populus euphratica defoliation carbon limitation carbon allocation non-structural carbohydrates

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G-非回归点的拓扑结构和G-平均跟踪性的动力学性质

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浙江大学学报（理学版） 2024年第3期51卷 308-313页

作者：冀占江梧州学院科学研究院应用数学研究团队广西梧州543002 梧州学院广西机器视觉与智能控制重点实验室广西梧州543002

介绍了G-非回归点和G-平均跟踪性的概念,在群作用下的逆极限空间中研究了G-非回归点的拓扑结构,在度量G-空间中研究了G-平均跟踪性的动力学性质,得到:(1)自映射f有G-非回归点的充要条件是移位映射σ有G-非回归点;(2.如果f^(k)具有G-平... 详细信息

介绍了G-非回归点和G-平均跟踪性的概念,在群作用下的逆极限空间中研究了G-非回归点的拓扑结构,在度量G-空间中研究了G-平均跟踪性的动力学性质,得到:(1)自映射f有G-非回归点的充要条件是移位映射σ有G-非回归点;(2.如果f^(k)具有G-平均跟踪性,则f具有G-平均跟踪性。这些结果推广了逆极限空间中移位映射非回归点集的结论以及度量空间中迭代映射平均跟踪性的结论。

关键词：群作用逆极限空间 G-非回归点 G-平均跟踪性

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精神障碍认知行为治疗临床研究中应关注的问题

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中华精神科杂志 2024年第9期57卷 562-565页

作者：李占江首都医科大学附属北京安定医院临床心理中心、国家精神心理疾病临床医学研究中心、北京市精神疾病诊断与治疗重点实验室北京100088

本文结合目前常见精神障碍认知行为治疗(cognitive behavioral therapy,CBT)的临床研究和应用现状,讨论了在今后的临床研究中需要重点关注的问题。未来应持续加强CBT新技术、新方法及重点人群和跨诊断方案疗效的研究,加强关于CBT有效的... 详细信息

本文结合目前常见精神障碍认知行为治疗(cognitive behavioral therapy,CBT)的临床研究和应用现状,讨论了在今后的临床研究中需要重点关注的问题。未来应持续加强CBT新技术、新方法及重点人群和跨诊断方案疗效的研究,加强关于CBT有效的心理生理机制、有效成分、不良反应和临床服务方式等问题的关注,同时也要关注中国本土文化对CBT疗效的影响,从而促进我国CBT的临床研究水平。

关键词：精神障碍认知行为治疗研究疗效机制

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Evolutionary divergence of subgenomes in common carp provides insights into speciation and allopolyploid success

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Fundamental Research 2024年第3期4卷 589-602页

作者： Lin Chen Chengyu Li Bijun Li Xiaofan Zhou Yulin Bai Xiaoqing Zou Zhixiong Zhou Qian He Baohua Chen Mei Wang Yaguo Xue Zhou Jiang Jianxin Feng Tao Zhou zhanjiang Liu Peng Xu State Key Laboratory of Mariculture Breeding College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Fujian Key Laboratory of Genetics and Breeding of Marine Organisms College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China State Key Laboratory of Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China Integrative Microbiology Research Centre South China Agricultural UniversityGuangzhou 510642China College of Fisheries Henan Normal UniversityXinxiang 453007China Henan Academy of Fishery Science Zhengzhou 450044China Department of Biology College of Arts and SciencesSyracuse UniversitySyracuse 13244USA

Hybridization and polyploidization have made great contributions to speciation,heterosis,and agricultural production within plants,but there is still limited understanding and utilization in *** structure and expression reorganization and cooperation post hybridization and polyploidization are essential for speciation and allopolyploid ***,the mechanisms have not yet been comprehensively assessed in ***,we produced a high-fidelity reference genome sequence for common carp,a typical allotetraploid fish species cultured *** genome enabled in-depth analysis of the evolution of subgenome architecture and expression *** genes were expressed with subgenome biases,with a trend of transition from the expression of subgenome A during the early stages to that of subgenome B during the late stages of embryonic *** subgenome A evolved more rapidly,subgenome B contributed to a greater level of expression during development and under stressful *** dominant patterns for homoeologous gene pairs both during development and under thermal stress suggest a potential fixed heterosis in the allotetraploid *** expressing either copy of a homoeologous gene at higher levels to confer development and response to stress indicates the dominant effect of *** plasticity of subgenomes and their shifting of dominant expression during early development,and in response to stressful conditions,provide novel insights into the molecular basis of the successful speciation,evolution,and heterosis of the allotetraploid common carp.

关键词： Allotetraploid Subgenome structural evolution Homoeologous expression Expression dominance shift Environmental adaptation

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Microstructure and Element Composition of Shell Plates of Liolophura japonica

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Wuhan university Journal of Natural Sciences 2010年第2期15卷 176-184页

作者： CHEN Daohai1,2.1. College of Fisheries, ocean university of{2., Qingdao 2.6003, Shangdong,{2. 2. Life Science and Technology School, zhanjiang Normal university, zhanjiang 52.048, Guangdong,{2. College of Fisheries Ocean University of China Qingdao China Life Science and Technology School Zhanjiang Normal University Zhanjiang China

The microstructure characteristics of shell plates of chiton Liolophura japonica Lischke were analyzed using environmental scanning electron microscopy （ESEM）. The results show that the internal structure of the shell plate of chiton Liolophurajaponica is composed of seven calcium layers which were crossed lamellar crystallites, homoge- neous structure, granular crystallites, and trabecular type crystallites. The element compositions of shell plates were analyzed using X-ray photoelectron spectroscopy （XPS）. The results determined by XPS show that the surface chemical states of various layers are different. There are 13 elements （Na, O, N, C, S, P, Ca, C1, Si, A1, K, Fe, Mg） on the shell plate of chiton L. japonica. Among the 13 elements, 11 are on the outside pigment layer except K and S. Among seven layers of shell plate, there is the largest quantity of elements on the outside pigment layer, and the least quantity of elements is on layer C （Articulamentum auctorum）. There are 7 elements on the layer C （Articulamentum auctorum）. Be- sides calcium carbonate, there are some inorganic compounds on the shell plate, such as NaC1, MgO, A12.3, silicate, sulfate and phosphate. There are some organic chemical components, such as carbohydrate, organic sulfide, and organic nitride on the shell plates.

关键词： Liolophura japonica environmental scanning electron microscope X-ray photoelectron spectroscopy (XPS) microstructure of shell plate

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G-利普希茨跟踪性、G-等度连续和G-非游荡点集的研究

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华南师范大学学报（自然科学版） 2024年第4期56卷 111-115页

作者：冀占江刘海林梧州学院科学研究院应用数学研究团队/广西机器视觉与智能控制重点实验室梧州543002 江西理工大学理学院赣州341000

利用度量G-空间中映射f与轨道空间中诱导映射f之间的性质,研究了映射f的G-利普希茨跟踪性、G-等度连续、G-非游荡点与诱导映射f的利普希茨跟踪性、等度连续、非游荡点集之间的动力学关系,得到如下结论:(1)映射f具有G-利普希茨跟踪性■... 详细信息

利用度量G-空间中映射f与轨道空间中诱导映射f之间的性质,研究了映射f的G-利普希茨跟踪性、G-等度连续、G-非游荡点与诱导映射f的利普希茨跟踪性、等度连续、非游荡点集之间的动力学关系,得到如下结论:(1)映射f具有G-利普希茨跟踪性■诱导映射f具有利普希茨跟踪性;(2.映射f是G-等度连续的■诱导映射f是等度连续的;(3)映射f的G-非游荡点集ΩG(f)在X中稠密?诱导映射f的非游荡点集Ω(f)在X/G中稠密。

关键词： G-利普希茨跟踪性 G-等度连续 G-非游荡点轨道空间

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Cu_2.nSnS_4 thin films prepared by sulfurizing different multilayer metal precursors

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Science china(Technological Sciences) 2009年第1期52卷 269-272页

作者： ZHANG Jun & SHAO LeXi School of Physical Science and Technology, zhanjiang Normal university, zhanjiang 52.048, china School of Physical Science and Technology Zhanjiang Normal University Zhanjiang 524048 China

Cu2.nSnS4 (CZTS) thin films were successfully fabricated on glass substrates by sulfurizing Cu-Sn-Zn multilayer precursors, which were deposited by ion beam sputtering and RF magnetron sputtering, respectively. The structural, electrical and optical properties of the prepared films under various processing conditions were investigated in detail. Results showed that the as-deposited CZTS thin films with the precursors by both ion beam sputtering and RF magnetron sputtering have a composition near stoichiometric. The crystallization of the samples, however, has a strong dependence on the atomic percent of constituents of the prepared CZTS films. A single phase stannite-type structure CZTS with a large absorption coefficient of 104/cm in the visible range could be obtained after sulfurization at 52.℃ for 2.h. The samples relative to the RF magnetron sputtering showed a low resistivity of 0.073 ?cm and band gap energy of about 1.53 eV. The samples relative to the ion beam sputtering exhibited a resistivity of 0.36 Ωcm and the band gap energy is about 1.51 eV.

关键词： Cu_2.nSnS_4 solar cell thin film ion beams sputtering RF sputtering

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Water masses in the northern South china Sea

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Acta oceanologica Sinica 1989年第3期8卷 337-350页

作者： FanLiqun, Su Yusong and Li Fengqi zhanjiang Fisheries College, zhanjiang ,{2. ocean university of Qingdao, Qingdao,{2.

Using the fuzzy clustering as the principal method, eight water masses in the northern South china Sea (NSCS) are distinguished. They are Alongshore Diluted Water Mass (F), Nearshore Mixed Water Mass (M), Warm Surface Water Mass(WS), Surface Water Mass(S), Surface-Subsurface Mixed Water Mass(SU), Subsurface Water Mass (U), Subsurface-Intermediate Water Mass (UI) and Intermediate Water Mass (1). A synthertic study is made on the formations, basic properties and modified characters of each water mass and the regularities of their disributions and growth and decline variations . They may be classified into three types; the type of runoff-diluted water (F). the type of shallow sea-modified water (M, WS. S. and SU) and the type of deep sea-oceanic water (U, UI, and I).

关键词： In area Water masses in the northern South china Sea

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Investigation of thermoluminescence in Li_2._4O_7 phosphors doped with Cu, Ag and Mg

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Science china(Physics,Mechanics & Astronomy) 2007年第3期50卷 311-320页

作者： XIONG ZhengYe1,2. TANG Qiang2.& ZHANG ChunXiang2.1 College of Science, Guangdong ocean university, {2. 52.088, china 2.School of Physics Science and Engineering, Sun Yat-sen university, Guangzhou 5102.5, china 1. College of Science Guangdong Ocean University Zhanjiang 524088 China 2. School of Physics Science and Engineering Sun Yat-sen University Guangzhou 510275 China

Li2.4O7 （LBO）:Cu,Ag,Mg phosphors have been prepared by the sintering technique. The roles of the Ag and Mg dopants in the phosphors have been studied using the methods of thermoluminescence （TL） glow curves and TL... 详细信息

Li2./sub>B4O7 （LBO）:Cu,Ag,Mg phosphors have been prepared by the sintering technique. The roles of the Ag and Mg dopants in the phosphors have been studied using the methods of thermoluminescence （TL） glow curves and TL 3D spectra. The results indicated that proper concentrations of Ag and Mg can enhance the TL of LBO:Cu. It was also indicated that the intensity of TL peak at 130℃ is reduced with the in- creasing Ag concentration, and enhanced with the increasing Mg concentration. From the TL 3D spectra, three emission bands （λ1 = 42. nm, λ2.= 380 nm, λ3 = 350 nm） were observed: the intensity of low energy emission band is reduced and that of the high energy is enhanced with the increasing dopant Ag; on the contrary, the intensity of low energy emission band is enhanced and that of the high energy one is reduced with the increasing dopant Mg.

关键词： thermoluminescence spectra borate lithium

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基于改进的随机森林—模糊积分模型的家庭农牧场信用评级研究

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征信 2024年第9期42卷 53-62,92页

作者：李战江廖湘黔内蒙古农业大学经济管理学院内蒙古呼和浩特010010

缓解融资难融资贵问题是实现家庭农牧场可持续发展的关键,而构建家庭农牧场信用评级体系是解决该难题的基础。针对家庭农牧场信用风险评估中样本数据指标多、噪声复杂、非线性乃至高维度等问题,以内蒙古自治区12.盟市500个家庭农牧场... 详细信息

缓解融资难融资贵问题是实现家庭农牧场可持续发展的关键,而构建家庭农牧场信用评级体系是解决该难题的基础。针对家庭农牧场信用风险评估中样本数据指标多、噪声复杂、非线性乃至高维度等问题,以内蒙古自治区12.盟市500个家庭农牧场为信用评价对象,将XGBoost算法、随机森林算法、模糊积分模型进行组合,构建了改进的随机森林—模糊积分模型,对家庭农牧场进行信用评级。分析结果表明:运用改进的随机森林—模糊积分模型对家庭农牧场进行信用评级的准确率、精确率、召回率、F1分数更高。

关键词： XGBoost 随机森林模糊积分信用评级家庭农牧场

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