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Shallow sub-lakes are essential for sustaining the successful wintering of waterbirds in Poyang Lake,China

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Avian Research 2024年第2期15卷 219-228页

作者： Mengjie Lu Zhen zhang Peng chen changxin Xu Bin Gao Luzhang Ruan School of Life Sciences Nanchang UniversityNanchang330031China Jiangxi Province Key Laboratory of Watershed Ecosystem Change and Biodiversity Center for Watershed EcologyInstitute of Life Science and School of Life SciencesNanchang UniversityNanchang330031China

For migratory waterbirds,the quality of wintering habitat is related to spring migration and successful breeding in the next *** availability of food resources in the habitat is critical and varies within water *** the water-level fluctuations in Poyang Lake have been extremely variable interannually in recent years,the wintering waterbird populations have remained relatively ***,the mechanism of maintaining the stability is worth *** study aimed to compare the distribution of vegetation and herbivorous wa-terbirds in 2015-2016 and 2016-2017,focusing on three shallow sub-lakes and one main lake *** results showed that the emergence of tubers and the growth of Carex *** a continuous food supply and habitat for wintering waterbirds with a gradual decline in the water *** sub-lakes supported almost all of the tuber-eating waterbirds(1.42-1.62×10^(5))and most geese(1.34-1.53×10^(6)).However,the main lake area,covered with Persicaria hydropiper,did not provide adequate and accessible *** resulted in almost no distribution of tuber-eating waterbirds,with only a few geese congregating in early *** results demonstrated that the shallow sub-lakes under human control provided a different environment from the main lake and are key to sustaining the successful wintering of hundreds of thousands of migratory waterbirds in Poyang ***,we recommend refining the anthropogenic management of the shallow sub-lakes to regulate the water level to ensure the carrying capacity of Poyang Lake.

关键词： Anthropogenic management Carrying capacity Seasonal lake Water level Wintering habitat

On the Normalized Laplacian Spectral Radius of Traceable Graphs

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Journal of Mathematical Research with Applications 2024年第3期44卷 291-303页

作者： yafei zhang Fei WEN Yonglei chen Institute of Applied Mathematics Lanzhou Jiaotong University

In this paper, we give some sufficient conditions for a graph to be traceable in terms of its order and size. As applications, the normalized Laplacian spectral conditions for a graph to be traceable are established.

关键词： traceable graphs normalized Laplacian spectral radius degree sequence

Manipulating Film Formation Kinetics Enables Organic Photovoltaic Cells with 19.5%Efficiency

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CCS Chemistry 2024年第1期6卷 218-229页

作者： Jianqiu Wang Pengqing Bi yafei Wang Zhong Zheng Zhihao chen Jiawei Qiao Wenxuan Wang Jiayao Li Cunbin An Shaoqing zhang Xiaotao Hao Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 School of Chemistry and Biological Engineering University of Science and Technology BeijingBeijing 100083 School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100

Organic photovoltaic(OPV)cells have demonstrated remarkable performance in small,spin-coated *** significant challenges persist in the form of large efficiency losses due to the fact that the ideal morphology cannot be preserved in the transition of small-area cells to large-scale ***,the ternary strategy of incorporating the third component FTCC-Br into the active layer of PB2:BTP-eC9 is employed to improve absorption response,optimize morphology,and reduce charge recombination,leading to a power conversion efficiency(PCE)of 19.5%(certified as 19.1%by the National Institute of Metrology,China).Moreover,the addition of FTCC-Br can control the aggregation kinetics of the active layer during the film formation process,transferring the optimal morphology to the blade-coated large-area *** on the highly efficient ternary bulk heterojunction,the 50 cm^(2) OPVmodules exhibited a PCE of 15.2%with respect to the active ***,the ternary OPV cells retain 80%of its initial PCE after 4000 h under continuous *** work demonstrates that the addition of a third component has the potential to improve the efficiency and stability of large-area organic solar cells.

关键词： organic photovoltaic cells morphology control large area cells ternary strategy power conventional efficiency

Improved Arithmetic Optimization Algorithm with Multi-Strategy Fusion Mechanism and Its Application in Engineering Design

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Journal of Applied Mathematics and Physics 2024年第6期12卷 2212-2253页

作者： Yu Liu Minge chen Ran Yin Jianwei Li yafei Zhao Xiaohua zhang School of Mathematics and Data Science Shaanxi University of Science & Technology Xian China School of Materials Science and Engineering Shaanxi University of Science & Technology Xian China

This article addresses the issues of falling into local optima and insufficient exploration capability in the Arithmetic Optimization Algorithm (AOA), proposing an improved Arithmetic Optimization Algorithm with a multi-strategy mechanism (BSFAOA). This algorithm introduces three strategies within the standard AOA framework: an adaptive balance factor SMOA based on sine functions, a search strategy combining Spiral Search and Brownian Motion, and a hybrid perturbation strategy based on Whale Fall Mechanism and Polynomial Differential Learning. The BSFAOA algorithm is analyzed in depth on the well-known 23 benchmark functions, CEC2019 test functions, and four real optimization problems. The experimental results demonstrate that the BSFAOA algorithm can better balance the exploration and exploitation capabilities, significantly enhancing the stability, convergence mode, and search efficiency of the AOA algorithm.

关键词： Arithmetic Optimization Algorithm Adaptive Balance Factor Spiral Search Brownian Motion Whale Fall Mechanism

Network analysis of suicide ideation and depression-anxiety symptoms among Chinese adolescents

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General Psychiatry 2024年第2期37卷 216-223页

作者： Shuyin Xu Yumeng Ju Xiyu Wei Wenwen Ou Mohan Ma Guanyi Lv Xiaotian Zhao Yaqi Qin Yunjing Li Liang Li Mei Huang Siqi Yang Yimei Lu yafei chen Junwu Liu Jin Liu Bangshan Liu Yan zhang Department of Psychiatry National Clinical Research Center for Mental Disordersand National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina Mental Health Institute of Central South University China National Technology Institute on Mental DisordersHunan Technology Institute of PsychiatryHunan Key Laboratory of Psychiatry and Mental HealthHunan Medical Center for Mental HealthChangshaHunanChina

Background The co-occurrence of depression and anxiety among adolescents is typically associated with suicide *** The study aimed to investigate the symptom-level relationship between suicide ideation and the comorbidity of depression and *** 1501 adolescents aged 12-19 years were assessed using the Patient Health Questionnaire(PHQ-9)and the Generalized Anxiety Disorder Scale,and 716 adolescents who scored≥5 on both scales were selected as *** analysis was used to identify the network structure of depressive symptoms and anxiety *** were categorised into either the suicide ideation or non-suicide ideation groups based on their scoring on the suicide-related item in PHQ-9.A comparison was made between the depression-anxiety symptom networks of the two ***‘Restlessness’,‘sad mood’and‘trouble relaxing’were the most prominent central symptoms in the depression-anxiety symptom network,and‘restlessness’,‘nervousness’and‘reduced movement’were the bridge symptoms in this network.‘Sad mood’was found to be directly related to‘suicide ideation’with the highest *** network structure was significantly different in properties between the suicide ideation group and the non-suicide ideation group,with‘restlessness’and‘sad mood’exhibiting significantly higher influence in the network of the suicide ideation group than that in the non-suicide ideation *** Restlessness and sad mood could be targeted for the intervention of depression-anxiety symptoms among adolescents with suicide ideation.

关键词： symptoms adolescent assessed

SPS烧结Ni-Mn-In合金的马氏体相变和力学性能研究

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材料导报 2024年第9期38卷 210-215页

作者：邝亚飞李永斌张艳陈峰华孙志刚胡季帆太原科技大学材料科学与工程学院磁电功能材料及其应用山西省重点实验室

本工作利用放电等离子烧结技术制备了Ni45Co5Mn37In13合金，通过优化热处理工艺以及烧结工艺参数尽可能地消除阻碍马氏体相变的内应力等因素。结果表明，合金粉末经过773 K低温去应力退火，有利于获得6M马氏体结构，6M马氏体结构的存在... 详细信息

本工作利用放电等离子烧结技术制备了Ni45Co5Mn37In13合金，通过优化热处理工艺以及烧结工艺参数尽可能地消除阻碍马氏体相变的内应力等因素。结果表明，合金粉末经过773 K低温去应力退火，有利于获得6M马氏体结构，6M马氏体结构的存在有利于相变的进行，这主要归因于原子结构有序化、均匀化增强。而退火时间从2 h延长到25 h,合金粉末的马氏体相变行为没有明显的变化，这归因于退火时间对原子扩散以及位错运动的影响较小。随着烧结温度从873 K升高到1 173 K,烧结合金的抗压强度和断裂应变分别提高到1 564 MPa和13.4%,这归因于孔隙的减小、致密度的提高以及晶界强化。总之，通过两次低温去应力退火和一次高温烧结，烧结Ni45Co5Mn37In13合金不仅获得了良好的力学性能，还具有急剧的马氏体相变行为。

关键词： Ni45Co5Mn37In13 放电等离子烧结退火工艺马氏体相变力学性能

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CMR在高血压心脏病中的应用进展

磁共振成像 2024年第2期15卷 208-212页

作者：成长鑫王波张艳陈琳玉撒璐张应从李琛蓉昆明理工大学医学院昆明650000 昆明理工大学附属医院/云南省第一人民医院磁共振科昆明650032

高血压作为各种心血管疾病的最重要诱因,会引起心脏结构变化、冠脉微循环障碍等一系列适应性改变,因此,对高血压患者心脏结构和功能的评价显得格外重要。临床上常用于评价心脏结构和功能的工具为超声心动图,但心脏磁共振(cardiac magnet... 详细信息

高血压作为各种心血管疾病的最重要诱因,会引起心脏结构变化、冠脉微循环障碍等一系列适应性改变,因此,对高血压患者心脏结构和功能的评价显得格外重要。临床上常用于评价心脏结构和功能的工具为超声心动图,但心脏磁共振(cardiac magnetic resonance,CMR)较其具有更好的软组织分辨率及多功能、多参数成像的优点,可通过电影序列、T2WI、灌注成像序列、早期强化序列以及延迟强化序列(late gadolinium enhancement,LGE)、增强前后T1 mapping对高血压心脏病(hypertensiveheartdisease,HHD)进行全方位评估。本文通过总结这些技术对高血压引起的左室肥厚(leftventricular hypertrophy,LVH)、心肌纤维化、收缩舒张功能降低、冠脉微循环障碍等方面进行的定量、定性分析,对指导临床决策、改善患者预后有重要意义,并有望为将来的研究提供参考方向。

关键词：磁共振成像心脏磁共振高血压心脏病左心室肥厚心肌纤维化心肌应变 T1 mapping

氧化石墨烯对再生砂超高性能混凝土力学及抗氯离子渗透性能的影响

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无机盐工业 2024年第8期56卷 54-59页

作者：张瑞君陈国良宋春草朱亚飞郑州工商学院工学院河南郑州450045 河南豫之筑建设工程有限公司河南郑州450045 合肥工业大学土木与水利工程学院安徽合肥230009

鉴于再生砂(RS)部分取代石英砂(QS)制备再生砂超高性能混凝土(RS-UHPC)的力学性能和耐久性降低的问题,以不同氧化石墨烯(GO)掺量为试验参数,探究GO对UHPC工作性能、力学性能及抗氯离子渗透性能的影响规律,并通过差热-热重分析和扫描电... 详细信息

鉴于再生砂(RS)部分取代石英砂(QS)制备再生砂超高性能混凝土(RS-UHPC)的力学性能和耐久性降低的问题,以不同氧化石墨烯(GO)掺量为试验参数,探究GO对UHPC工作性能、力学性能及抗氯离子渗透性能的影响规律,并通过差热-热重分析和扫描电子显微镜等手段揭示其增强机理。结果表明:掺入RS会降低UHPC的流动度、力学性能及UHPC抗氯离子渗透性能;随着GO掺量的增加,RS-UHPC流动度逐渐下降,但其力学性能、抗氯离子渗透性能均显著提升,当GO质量分数为0.06%时,RS-UHPC的28 d抗压强度和抗折强度分别提升11.8%和49.6%,氯离子扩散系数降低31.8%,抗裂韧性显著提升。RS的内养护效应和GO的晶核效应均促进水泥水化、降低基体孔隙率、改善再生砂与基体的界面过渡区,从而提升RS-UHPC的力学性能、抗裂性能和抗氯离子渗透性能。

关键词：超高性能混凝土氧化石墨烯再生砂力学性能界面过渡区

基于AR通路及Wnt通路探讨固本清源方联合雄激素剥夺治疗去势抵抗性前列腺癌的机制

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中华中医药杂志 2024年第3期39卷 1480-1484页

作者：陈浩然方素萍张迪王家政陈亚飞刘浩中国中医科学院广安门医院北京100053

目的:从前列腺癌AR通路及肿瘤干细胞Wnt通路探讨固本清源方联合雄激素剥夺(ADT)治疗控制去势抵抗性前列腺癌(CRPC)的作用机制。方法:建立CRPC荷瘤小鼠模型,采用RT-PCR、WesternBlot检测固本清源方联合ADT治疗肿瘤组织中AR、NKX3.1、PSA... 详细信息

目的:从前列腺癌AR通路及肿瘤干细胞Wnt通路探讨固本清源方联合雄激素剥夺(ADT)治疗控制去势抵抗性前列腺癌(CRPC)的作用机制。方法:建立CRPC荷瘤小鼠模型,采用RT-PCR、WesternBlot检测固本清源方联合ADT治疗肿瘤组织中AR、NKX3.1、PSA的表达;分选前列腺癌干细胞,观察固本清源方联合ADT治疗对接种前列腺癌干细胞荷瘤小鼠的抑瘤率,采用WesternBlot检测肿瘤组织中Wnt、β-catenin的表达。结果:中、高剂量固本清源方联合ADT治疗组AR、PSAmRNA及蛋白表达水平下调,而NKX3.1mRNA及蛋白表达水平上调,与ADT组治疗比较差异有统计学意义(P<0.05)。接种前列腺癌干细胞荷瘤小鼠较接种普通CRPC细胞荷瘤小鼠肿瘤显著增大(P<0.05)。低、中、高剂量固本清源方联合ADT治疗对前列腺癌干细胞荷瘤小鼠的抑瘤率分别为24.58%、36.67%、40.24%,与ADT组比较差异有统计学意义(P<0.05),进一步研究显示低、中、高剂量固本清源方联合ADT治疗能下调Wnt、β-catenin的蛋白表达水平,与ADT组比较差异有统计学意义(P<0.05)。结论:固本清源方联合ADT治疗CRPC作用机制与调控前列腺癌AR通路及肿瘤干细胞Wnt/β-catenin通路有关。

关键词：去势抵抗性前列腺癌固本清源方雄激素剥夺治疗 AR通路肿瘤干细胞 Wnt通路