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小兴安岭不同生长型阔叶植物叶性状变异及权衡

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植物生态学报 2024年第3期48卷 364-376页

作者：范宏坤曾涛金光泽刘志理东北林业大学生态研究中心森林生态系统可持续经营教育部重点实验室东北亚生物多样性研究中心哈尔滨150040

植物叶功能性状的变异模式以及相关关系一直是解析植物对气候变化响应机制的关键,然而不同生长型阔叶植物间叶片结构性状和光合生理性状变异及相关性的异同性尚不清晰。该研究以典型阔叶红松(Pinus koraiensis)林中的优势或常见的18种... 详细信息

植物叶功能性状的变异模式以及相关关系一直是解析植物对气候变化响应机制的关键,然而不同生长型阔叶植物间叶片结构性状和光合生理性状变异及相关性的异同性尚不清晰。该研究以典型阔叶红松(Pinus koraiensis)林中的优势或常见的18种阔叶植物为研究对象,通过测量4个结构性状(叶面积(LA)、叶片厚度(LT)、叶干物质含量(LDMC)和比叶质量(LMA))和4个光合生理性状(叶绿素值(SPAD)、胞间CO_(2)浓度(C_(i))、气孔导度(G_(s))和净光合速率(P_(n))),分析了在不同生长型阔叶植物叶片结构性状和光合生理性状的变异及相关性。结果表明:不同生长型植物叶功能性状的变异范围为7.73%-74.54%,其中种间变异是LA和LT的主要变异来源,C_(i)、SPAD、LDMC以及LMA的变异主要由生长型驱动,G_(s)和Pn变异的主要来源是种内;不同生长型叶功能性状间存在显著差异,其中草本的LA、LT和C_(i)显著高于灌木和乔木,乔木的LMA、LDMC、SPAD、P_(n)和G_(s)显著高于灌木和草本;不同生长型之间P_(n)和LMA、LDMC之间具有显著的异速生长关系,且斜率大于1,而SPAD和LA、LT、LDMC、LMA,Ci与LT、LDMC、LMA之间则呈斜率小于1的异速生长关系;草本采取“快速投资-收益”型(获取型)策略,相对而言,乔木采取“缓慢投资-收益”型(保守型)策略,灌木采取介于乔木与草本之间的资源利用策略,这可能与不同生长型植物所处环境的光照条件有关。植物叶片结构性状和光合生理特征的变异及相互关系的研究对于揭示植物资源获取与分配策略具有重要意义。

关键词：功能性状叶光合特性叶结构性状叶经济谱

Modularized sulfur storage achieved by 100% space utilization host for high performance lithium-sulfur batteries

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Chinese Chemical Letters 2024年第4期35卷 237-243页

作者： Jun Jiang Tong Guo Wuxin Bai Mingliang liu Shujun liu Zhijie Qi Jingwen Sun Shugang Pan Aleksandr L.Vasiliev Zhiyuan Ma Xin Wang Junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094China Changzhou Institute of Technology Changzhou 213032China Shubnikov Institute of Crystallography Russian Academy of SciencesLeninskii pr.59Moscow 119333Russia Jiangsu Pylon Battery Co. Ltd.Yangzhou 211400China

Popularization of lithium-sulfur batteries(LSBs) is still hindered by shuttle effect and volume ***, a new modularized sulfur storage strategy is proposed to solve above problems and accomplished via employing 100% space utilization host material of cobalt loaded carbon nanoparticles derived from ZIF-67. The modular dispersed storage of sulfur not only greatly increases the proportion of active sulfur,but also inhibits the occurrence of volume expansion. Meanwhile, 100% space utilization host material can greatly improve the conductivity of the cathode, provide a larger electrolyte wetting interface and effectively suppress the shuttle effect. Moreover, loaded cobalt particles have high catalytic activity for electrochemical reaction and can effectively improve the redox kinetics. The cell with new cathode host material carbonized at 650 ℃(ZIF-67(650 ℃)) exhibits superior rate performance and can maintain a high specific capacity of 950 m Ah/g after 100 cycles at 0.2 C, showing a good cycle stability.

关键词： Modularized sulfur storage Space utilization Cathode host material ZIF-67 Lithium-sulfur batteries

基于小胶质细胞-神经元串扰信号CD300f/TLR4探讨左归降糖解郁方对糖尿病并发抑郁症大鼠海马突触微环境损伤的保护作用及机制

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中国中药杂志 2024年第17期49卷 4597-4606页

作者：刘检杨蕙赵洪庆李薇柳卓王宇红湖南中医药大学第一附属医院医学创新实验中心湖南长沙410007 抑郁类疾病中医药防治湖南省重点实验室湖南长沙410208 湖南中医药大学科技创新中心湖南长沙410208 湖南省中医药研究院附属医院湖南长沙410006

探讨左归降糖解郁方调控小胶质细胞免疫受体分子样家族成员f(CD300f)/Toll样受体4(TLR4)信号改善糖尿病并发抑郁症(DD)大鼠海马突触微环境损伤的保护作用及机制。首先通过2周高脂饲料喂养+STZ注射+28 d慢性温和不可预测性应激加孤养复... 详细信息

探讨左归降糖解郁方调控小胶质细胞免疫受体分子样家族成员f(CD300f)/Toll样受体4(TLR4)信号改善糖尿病并发抑郁症(DD)大鼠海马突触微环境损伤的保护作用及机制。首先通过2周高脂饲料喂养+STZ注射+28 d慢性温和不可预测性应激加孤养复制DD大鼠模型,实验设正常组、模型组、CD300f阻断剂组(CLM1,2μg·kg-1)、CD300f激动剂组(Fcγ,5μg·kg^(-1))、阳性药组(二甲双胍0.18 g·kg^(-1)+氟西汀1.8 mg·kg^(-1))以及左归降糖解郁方高、低剂量组(20.52、10.26 g·kg^(-1))。采用旷场、强迫游泳实验评估大鼠抑郁样行为;生化分析检测血糖、胰岛素水平;酶联免疫吸附法检测海马组织中肿瘤坏死因子(TNF)-α、白细胞介素(IL)-1β、吲哚胺2,3-双加氧酶(IDO)、5-羟色胺(5-HT)、多巴胺(DA)水平;透射电镜观察大鼠海马神经元突触超微结构变化情况;免疫荧光、Western blot分别检测大鼠海马小胶质细胞中CD300f、TLR4及海马神经元中突触素(SYN)、突触后密度蛋白95(PSD-95)表达情况。结果表明,与正常组比较,模型组大鼠旷场总活动路程减少,强迫游泳不动时间增加,血清胰岛素、海马组织中TNF-α、IL-1β、IDO水平升高,而5-HT和DA水平明显下降,且海马小胶质细胞中CD300f表达下调、TLR4表达上调,海马神经元中突触相关蛋白SYN、PSD-95表达降低,同时海马神经元突触超微结构明显受损;与模型组比较,CD300f阻断剂和激动剂分别加重和减轻上述异常改变;左归降糖解郁方高、低剂量则能显著改善大鼠上述抑郁样行为,分别抑制TNF-α、IL-1β、IDO异常升高和5-HT、DA减少,并有效增加小胶质细胞中CD300f表达,降低TLR4表达,上调海马神经元中突触前膜SYN和突触后膜PSD-95蛋白表达水平,最终改善海马突触微环境损伤。综上,该文证实了左归降糖解郁方能有效改善糖尿病并发抑郁症大鼠抑郁样行为,抑制海马小胶质细胞炎症激活,其机制可能与调控CD300f/TLR4信号进而缓解海马突触微环境损伤有关。

关键词：糖尿病并发抑郁症小胶质细胞 CD300f/TLR4 突触微环境左归降糖解郁方

Textured Perovskite/Silicon Tandem Solar Cells Achieving Over 30% Efficiency Promoted by 4-Fluorobenzylamine Hydroiodide

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Nano-Micro Letters 2024年第9期16卷 557-570页

作者： Jingjing liu Biao Shi Qiaojing Xu Yucheng Li Yuxiang Li Pengfei liu Zetong SunLi Xuejiao Wang Cong Sun Wei Han Diannan Li Sanlong Wang Dekun Zhang guangwu Li Xiaona Du Ying Zhao Xiaodan Zhang Renewable Energy Conversion and Storage Center Solar Energy Conversion CenterInstitute of Photoelectronic Thin Film Devices and TechnologyNankai UniversityTianjin 300350People’s Republic of China Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350People’s Republic of China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192People’s Republic of China Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350People’s Republic of China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072People’s Republic of China Center of Single‑Molecule Sciences Institute of Modern OpticsTianjin Key Laboratory of Micro‑Scale Optical Information Science and TechnologyCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan RoadJinnan DistrictTianjin 300350People’s Republic of China Shenzhen Research Institute of Nankai University 16Th FloorYantian Science and Technology BuildingHaishan StreetYantian DistrictShenzhen 518083People’s Republic of China

Monolithic textured perovskite/silicon tandem solar cells(TSCs)are expected to achieve maximum light capture at the lowest cost,potentially exhibiting the best power conversion ***,it is challenging to fabricate high-quality perovskite films and preferred crystal orientation on commercially textured silicon substrates with micrometersize ***,we introduced a bulky organic molecule(4-fluorobenzylamine hydroiodide(F-PMAI))as a perovskite *** is found that F-PMAI can retard the crystallization process of perovskite film through hydrogen bond interaction between F^(−)and FA^(+)and reduce(111)facet surface energy due to enhanced adsorption energy of F-PMAI on the(111)***,the bulky molecular is extruded to the bottom and top of perovskite film after crystal growth,which can passivate interface defects through strong interaction between F-PMA+and undercoordinated Pb^(2+)/I^(−).As a result,the additive facilitates the formation of large perovskite grains and(111)preferred orientation with a reduced trap-state density,thereby promoting charge carrier transportation,and enhancing device performance and *** perovskite/silicon TSCs achieved a champion efficiency of 30.05%based on a silicon thin film tunneling *** addition,the devices exhibit excellent longterm thermal and light stability without *** work provides an effective strategy for achieving efficient and stable TSCs.

关键词： Perovskite crystallization (111)preferred orientation Defect passivation Perovskite/silicon tandem solar cells

Rare earth element-modified MOF materials:synthesis and photocatalytic applications in environmental remediation

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Rare Metals 2024年第4期43卷 1390-1406页

作者： Shu-Kun Le Qi-Jie Jin Jia-Ao Han Hua-Cong Zhou Quan-Sheng liu Fu Yang Jie Miao Pei-Pei liu Cheng-Zhang Zhu Hai-Tao Xu Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources Chemical Engineering CollegeInner Mongolia University of TechnologyHohhot010050China School of Environmental Science and Engineering Nanjing Tech UniversityNanjing210009China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212100China Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications MontrealQCJ3X 1P7Canada

Metal-organic framework-like materials(MOFs)have been developed in the fields of photocatalysis for their excellent optical properties and physicochemical properties,including environmental remediation,CO_(2)photoreduction,water splitting,and so *** their important roles in various fields,rare earth elements have received growing interests from *** MOFs with rare earth elements for modification allows broadening the absorption spectrum,while the active electrons on their empty 4f orbitals can act as traps to capture photoexcited carriers to inhibit the recombination of electron-hole pairs,thus promoting photocatalytic ***,rare earth elements modified MOFs provide an attractive way to achieve their high value *** this mini-review,the synthesis of rare earth element-modified MOFs photocatalysts and corresponding applications in the removal of antibiotics,CO_(2)reduction,and hydrogen production are constructively summarized and ***,the latest advancements and current difficulties of these materials as well as the application prospects are also provided.

关键词： Rare earth metals MOFs Photocatalytic CO_(2) reduction Environmental remediation Water splitting

Development of an Integrated Disposable Device for SARSCoV-2 Nucleic Acid Extraction and Detection

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Biomedical and Environmental Sciences 2024年第6期37卷 639-646页

作者： Jing Ma Yanzhe Hao Meiling Hou Xiaoshan Zhang Jingduan liu Haodi Meng Jiangbo Chang Xuejun Ma Jihua liu Qingjie Ying Xianhua Wang Hongxia Li Yuxi Cao Xiaoguang Zhang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Beijing Runbio Biotechnology Development Co. LtdBeijing 100106China Beijing Beta Technology Co. LtdBeijing 101318China Jiangsu Qitian Gene Biotechnology Co. LtdWuxi 214135JiangsuChina

Objective To develop a highly sensitive and rapid nucleic acid detection method for the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Methods We designed,developed,and manufactured an integrated disposable device for SARS-CoV-2 nucleic acid extraction and *** precision of the liquid transfer and temperature control was tested.A comparison between our device and a commercial kit for SARS-Cov-2 nucleic acid extraction was performed using real-time fluorescence reverse transcription polymerase chain reaction(RT-PCR).The entire process,from SARS-CoV-2 nucleic acid extraction to amplification,was *** The precision of the syringe transfer volume was 19.2±1.9μL(set value was 20),32.2±1.6(set value was 30),and 57.2±3.5(set value was 60).Temperature control in the amplification tube was measured at 60.0±0.0℃(set value was 60)and 95.1±0.2℃(set value was 95)***-Cov-2 nucleic acid extraction yield through the device was 7.10×10^(6) copies/mL,while a commercial kit yielded 2.98×10^(6) copies/*** mean time to complete the entire assay,from SARS-CoV-2 nucleic acid extraction to amplification detection,was 36 min and 45 *** detection limit for SARS-CoV-2 nucleic acid was 250 copies/*** The integrated disposable devices may be used for SARS-CoV-2 Point-of-Care test(POCT).

关键词： An integrated disposable device SARS-Cov-2 Nucleic acid detection

A unique subseafloor microbiosphere in the Mariana Trench driven by episodic sedimentation

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Marine Life Science & Technology 2024年第1期6卷 168-181页

作者： Jiwen liu Da-Wei Li Xinxin He Ronghua liu Haojin Cheng Chenglong Su Mengna Chen Yonghong Wang Zhongsheng Zhao Hanyue Xu Zhangyu Cheng Zicheng Wang Nikolai Pedentchouk David J.Lea-Smith Jonathan D.Todd Xiaoshou liu Meixun Zhao Xiao-Hua Zhang Frontiers Science Center for Deep Ocean Multispheres and Earth System and College of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Ecology and Environmental Science Laoshan LaboratoryQingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationOcean University of ChinaQingdao 266100China Key Lab of Submarine Geosciences and Prospecting Techniques Ministry of Education/College of Marine GeosciencesOcean University of ChinaQingdao 266100China Key Laboratory of Physical Oceanography Ministry of Education/Research Vessel CentreOcean University of ChinaQingdao 266100China School of Environmental Sciences University of East AngliaNorwich NR47TJUK School of Biological Sciences University of East AngliaNorwich NR47TJUK

Hadal trenches are characterized by enhanced and infrequent high-rate episodic sedimentation events that likely introduce not only labile organic carbon and key nutrients but also new microbes that significantly alter the subseafloor ***,the role of high-rate episodic sedimentation in controlling the composition of the hadal subseafloor microbiosphere is ***,analyses of carbon isotope composition in a~750 cm long sediment core from the Challenger Deep revealed noncontinuous deposition,with anomalous ^(14)C ages likely caused by seismically driven mass transport and the funneling effect of trench *** community composition and diverse enzyme activities in the upper~27 cm differed from those at lower depths,probably due to sudden sediment deposition and differences in redox condition and organic matter *** lower depths,microbial population numbers,and composition remained relatively constant,except at some discrete depths with altered enzyme activity and microbial phyla abundance,possibly due to additional sudden sedimentation events of different *** is provided of a unique role for high-rate episodic sedimentation events in controlling the subsurface microbiosphere in Earth’s deepest ocean floor and highlight the need to perform thorough analysis over a large depth range to characterize hadal benthic *** depositional processes are likely crucial in shaping deep-water geochemical environments and thereby the deep subseafloor biosphere.

关键词： Hadal subseafloor Deep water sediment Mariana Trench Radiocarbon Microbial community Redox potential

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基于听说知识融合网络的多模态对话情绪识别

控制与决策 2024年第6期39卷 2031-2040页

作者：刘琴谢珺胡勇郝戍峰郝雅卉太原理工大学信息与计算机学院太原030024 北京航空航天大学新媒体艺术与设计学院北京100191 太原理工大学大数据学院太原030024

多模态对话情绪识别旨在根据多模态对话语境判别出目标话语所表达的情绪类别,是构建共情对话系统的基础任务.现有工作中大多数方法仅考虑多模态对话本身信息,忽略了对话中与倾听者和说话者相关的知识信息,从而限制了目标话语情绪特征的... 详细信息

多模态对话情绪识别旨在根据多模态对话语境判别出目标话语所表达的情绪类别,是构建共情对话系统的基础任务.现有工作中大多数方法仅考虑多模态对话本身信息,忽略了对话中与倾听者和说话者相关的知识信息,从而限制了目标话语情绪特征的捕捉.为解决该问题,提出一种基于听说知识融合网络的多模态对话情绪识别模型(LSKFN),引入与倾听者和说话者相关的外部常识知识,实现多模态上下文信息和知识信息的有机融合.LSKFN包含多模态上下文感知、听说知识融合、情绪信息汇总和情绪决策4个阶段,分别用于提取多模态上下文特征、融入听说知识特征、消除冗余特征和预测情绪分布.在两个公开数据集上的实验结果表明,与其他基准模型相比,LSKFN能够为目标话语提取到更加丰富的情绪特征,并且获得较好的对话情绪识别效果.

关键词：情感计算对话情绪识别多模态特征外部常识知识上下文语义知识特征融合

基于距离修正的小目标中波红外光谱辐射测温方法

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光谱学与光谱分析 2024年第4期44卷 1158-1164页

作者：李文凯周亮刘朝晖崔凯刘凯李治国谢梅林中国科学院西安光学精密机械研究所陕西西安710119 中国科学院大学北京100049

对高速运动的远距离空间目标而言,温度是表征其工作状态与性能的重要参数之一。准确获取目标的温度对判别其运动状态和预测其态势发展等具有重要的参考价值。目前常用的面目标或点目标的处理方法,在小目标的辐射特性测量中将不再适用,... 详细信息

对高速运动的远距离空间目标而言,温度是表征其工作状态与性能的重要参数之一。准确获取目标的温度对判别其运动状态和预测其态势发展等具有重要的参考价值。目前常用的面目标或点目标的处理方法,在小目标的辐射特性测量中将不再适用,而光谱探测增加了目标在波长维度的可分辨信息,可以准确获取目标能量随波长的分布情况,为目标温度的反演提供了可能,极具应用潜力。无狭缝光谱仪可以降低对空间目标的跟踪和稳定精度的要求,具有结构简单、帧频高和响应速度快等特点,在天文观测和航天器观测等方面具有较高的应用价值。对目标红外辐射特性测量的光谱定标模型进行了分析,确定了红外探测器像元线性响应模型中的主要参数。为了减小成像距离对测温精度的影响,提出了一种基于距离修正的目标温度反演模型,提高了测温精度,符合实际工程实践应用中的精度需求,对红外辐射光谱测温具有一定的指导意义。

关键词：辐射特性测量无狭缝光谱仪光谱定标温度反演