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1973-2013年红碱淖水域水质变化及驱动力分析

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湖泊科学 2016年第5期28卷 982-993页

作者：赵宁马超杨亚莉河南理工大学矿山空间信息国家测绘地理信息局重点实验室焦作454000

对1973-2013年8期Landsat MSS、TM、ETM^+、OLI影像进行了辐射定标、大气校正、辐射归一化和波段运算等处理;利用归一化差值植被指数(NDVI),分期提取了红碱淖水域面积,分析了湖水水质及红碱淖周围植被变化.研究表明:40 a间红碱淖水域面... 详细信息

对1973-2013年8期Landsat MSS、TM、ETM^+、OLI影像进行了辐射定标、大气校正、辐射归一化和波段运算等处理;利用归一化差值植被指数(NDVI),分期提取了红碱淖水域面积,分析了湖水水质及红碱淖周围植被变化.研究表明:40 a间红碱淖水域面积呈阶段性萎缩趋势,1990s后萎缩速率加剧,水域面积总体缩小45.7%;湖区周边NDVI波动性增加显示了水退草进的变化趋势;湖面NDVI值的骤增,暗示叶绿素a或悬浮物浓度增加,间接表明湖区水质变差.根据40 a来水域面积变化,红碱淖的演变进程可依据湖泊面积动态度划分为稳定期(1973-1994年)和萎缩期(1994-2013年)两个阶段,气候暖干化是影响稳定期(1973 1994年)湖泊变化的主要因素,在萎缩期(1994-2013年)气候暖干化叠加人类活动是湖泊水量减少和水质变差的诱因,高强度的人为干扰如人工筑坝、灌溉耗水和煤炭开采是红碱淖水域面积锐减的主要原因.

关键词：红碱淖湖泊变化 NDVI 驱动力遥感监测 MSS/TM/ETM^+/OLI

Interdecadal changes in the frequency of winter extreme cold events in North China during 1989–2021

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Atmospheric and Oceanic Science Letters 2024年第4期17卷 1-7页

作者： yali Zhu Fangwu Song Dong Guo Nansen‐Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjingChina Carbon Neutrality Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

全球变暖背景下,极端天气气候事件的变化受到关注.本文研究发现, 1989-2021年期间,华北地区极端冷日数在2003和2013年发生了年代际变化.极端冷日数先增加后减少. 2003-2012年,西伯利亚-乌拉尔高压偏强,极地西风急流偏弱,有利于冷空气南... 详细信息

全球变暖背景下,极端天气气候事件的变化受到关注.本文研究发现, 1989-2021年期间,华北地区极端冷日数在2003和2013年发生了年代际变化.极端冷日数先增加后减少. 2003-2012年,西伯利亚-乌拉尔高压偏强,极地西风急流偏弱,有利于冷空气南下入侵华北地区,华北极端冷日数偏多.而在1989-2002年和2013-2021年,情况相反.虽然三个时段华北极端冷日的强度没有显著差异,但与其相联系的冷空气强度变得更强, 2013-2021年冷空气中心区域往西北扩张到了贝加尔湖以西地区.

关键词：华北极端冷事件西伯利亚–乌拉尔高压北大西洋涛动极地急流东亚西风急流

Flexible and Robust Functionalized Boron Nitride/Poly(p‑Phenylene Benzobisoxazole)Nanocomposite Paper with High Thermal Conductivity and Outstanding Electrical Insulation

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Nano-Micro Letters 2024年第2期16卷 423-437页

作者： Lin Tang Kunpeng Ruan Xi Liu Yusheng Tang yali Zhang Junwei Gu Chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the rapid development of 5G information technology,thermal conductivity/dissipation problems of highly integrated electronic devices and electrical equipment are becoming *** this work,“high-temperature solid-phase&diazonium salt decomposition”method is carried out to prepare benzidine-functionalized boron nitride(m-BN).Subsequently,m-BN/poly(pphenylene benzobisoxazole)nanofiber(PNF)nanocomposite paper with nacremimetic layered structures is prepared via sol–gel film transformation *** obtained m-BN/PNF nanocomposite paper with 50 wt%m-BN presents excellent thermal conductivity,incredible electrical insulation,outstanding mechanical properties and thermal stability,due to the construction of extensive hydrogen bonds andπ–πinteractions between m-BN and PNF,and stable nacre-mimetic layered ***λ∥andλ_(⊥)are 9.68 and 0.84 W m^(-1)K^(-1),and the volume resistivity and breakdown strength are as high as 2.3×10^(15)Ωcm and 324.2 kV mm^(-1),***,it also presents extremely high tensile strength of 193.6 MPa and thermal decomposition temperature of 640°C,showing a broad application prospect in high-end thermal management fields such as electronic devices and electrical equipment.

关键词： Poly(p-phenylene-2,6-benzobisoxazole)nanofiber Boron nitride Thermal conductivity Electrical insulation

Interdecadal changes in the western Siberian summer mean and extreme rainfall during 1982-2021

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Atmospheric and Oceanic Science Letters 2024年第3期17卷 37-41页

作者： yali Zhu Fangwu Song Dong Guo Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjingChina Carbon Neutrality Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

本文研究发现,西西伯利亚夏季降水在1995年后显著增加,2012年后又有所减少,极端降水日数和强度呈现一致的变化特征.伴随这两次降水的年代际增加/减少,西西伯利亚上空出现异常气旋/反气旋和水汽幅合/幅散.极端降水发生时的区域环流特征... 详细信息

本文研究发现,西西伯利亚夏季降水在1995年后显著增加,2012年后又有所减少,极端降水日数和强度呈现一致的变化特征.伴随这两次降水的年代际增加/减少,西西伯利亚上空出现异常气旋/反气旋和水汽幅合/幅散.极端降水发生时的区域环流特征在三个时段基本一致:西西伯利亚低空出现气旋性异常,高空为西北-东南向的异常气旋-反气旋偶极子型.1995-2011年期间,极端降水日数更多,强度更强,上述异常环流型也更强.

关键词：西伯利亚夏季降水年代际变化乌拉尔高压北大西洋波流相互作用

免耕不同秸秆覆盖量对土壤酶活性及土壤有机碳含量的影响

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土壤与作物 2024年第2期13卷 140-153页

作者：吕付泽杨雅丽鲍雪莲郑甜甜霍海南解宏图何红波张旭东中国科学院沈阳应用生态研究所辽宁沈阳110016 中国科学院大学北京100049 辽宁省现代保护性耕作与生态农业重点实验室辽宁沈阳110016

免耕秸秆覆盖的耕作模式能够影响土壤微生物生物量和活性,增加土壤有机质含量,是提高土壤综合生态效益的保护性耕作核心措施之一。为探究免耕结合不同秸秆覆盖量下土壤酶活性变化及调控机制,本研究依托中国科学院沈阳应用生态研究所保... 详细信息

免耕秸秆覆盖的耕作模式能够影响土壤微生物生物量和活性,增加土壤有机质含量,是提高土壤综合生态效益的保护性耕作核心措施之一。为探究免耕结合不同秸秆覆盖量下土壤酶活性变化及调控机制,本研究依托中国科学院沈阳应用生态研究所保护性耕作研发基地进行田间试验,以传统耕作(翻耕+无秸秆覆盖,CT)为对照,研究免耕结合无(免耕+无秸秆覆盖,NT0)、低量(免耕+1/3秸秆覆盖,NT1/3)、中量(免耕+2/3秸秆覆盖,NT2/3)、高量(免耕+全量秸秆覆盖,NT3/3)秸秆覆盖处理下不同土层(0~5、5~10、10~20 cm)的土壤酶活性、微生物生物量和有机碳含量变化。结果表明,免耕结合秸秆覆盖主要影响了表层0~5 cm土壤酶活性。与CT相比,免耕结合秸秆覆盖显著影响纤维二糖酶(CB)、β-N-乙酰氨基葡萄糖苷酶(NAG)和过氧化物酶(PER)活性。免耕结合低量(NT1/3)和高量(NT3/3)秸秆覆盖处理下的CB活性显著高于CT处理1.24倍和1.53倍。所有免耕处理下NAG活性显著高于CT处理78.1%~124.4%,且NAG活性有随不同秸秆覆盖量由低到高呈上升趋势(NT1/3NT2/3>NT3/3)。免耕结合秸秆覆盖对5~10 cm和10~20 cm土壤酶活性影响很小。研究还发现,土壤酶活性受土壤有机碳(SOC)、全氮(TN)、可溶性有机碳(DOC)、可溶性有机氮(DON)、铵态氮(NH_(4)^(+)-N)、硝态氮(NO_(3)~--N)、pH以及含水量等理化因素的影响,同时还受微生物生物量以及微生物群落组成的显著影响。与CT相比,NT3/3能够使0~5 cm土层中总体酶活性、SOC含量和微生物熵分别提高了60.5%、35.6%和21.6%。土壤总体酶活性与SOC和微生物熵均呈显著正相关关系,说明微生物酶活性的增加更有利于SOC积累。免耕结合高量秸秆覆盖(NT3/3)处理下微生物可利用性碳源更充足,更有利于土壤微生物活性增加,进而促进SOC固存。

关键词：秸秆覆盖量土壤酶活性微生物生物量土壤有机碳

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眼部弓形虫病一例

中华病理学杂志 2017年第2期46卷 130-131页

作者：杨亚丽申洪云南省第二人民医院病理科昆明650204 南方医科大学病理学教研室

患者女，5岁，无明显诱因左眼视物不见半年于2009年5月到云南省第二人民医院眼科就诊。患者无外伤、疼痛、流泪等症状。眼部B超示：左眼玻璃体腔见弥漫强回声光点，玻璃体腔内她“璧斗征”，后运动（＋）。

关键词：弓形虫病眼部云南省第二人民医院 2009年眼玻璃体腔玻璃体腔内强回声患者

Slc43a2^(+)T cell metastasis from spleen to brain in RGNNV infected teleost

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Science China(Life Sciences) 2024年第4期67卷 733-744页

作者： Qing Wang yali Liu Minlin Zhang Min yang Jiantao Liang Xiaoling Zuo Shaowen Wang Xianze Jia Huihong Zhao Han Jiang Qiang Lin Qiwei Qin College of Marine Sciences South China Agricultural UniversityGuangzhou 510642China CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Nansha-South China Agricultural University Fishery Research Institute Guangzhou 511457China Joint University Laboratory of Guangdong Province Hong Kong and Marco Region on Marine Bioresource Conservation and ExploitationGuangzhou 510642China University of Chinese Academy of Sciences Beijing 100101China

The origin of T cells in the teleost's brain is *** viewing the central nervous system(CNS)as immune privileged has been widely accepted,previous studies suggest that T cells residing in the thymus but not in the spleen of the teleost play an essential role in communicating with the peripheral ***,we identified nine T cell subpopulations in the thymus and spleen of orange-spotted grouper(Epinephelus coioices)through single-cell RNA-sequencing *** viral CNS infection with red-spotted grouper nervous necrosis virus(RGNNV),the number of slc43a2^(+)T cells synchronously increased in the spleen and *** the infection tests in asplenic zebrafish(tlx1^▲zebrafish model),no increase in the number of slc43a2^(+)T cells was observed in the ***-cell transcriptomic analysis indicated that slc43a2^(+)T cells mature and functionally differentiate within the spleen and then migrate into the brain to trigger an immune *** study suggests a novel route for T cell migration from the spleen to the brain during viral infection in fish.

关键词： central nervous system slc43a2^(+)T cell RGNNV T cell migration teleost

Reform of the Comprehensive Practical Course System for Mechanical and Electronic Engineering Majors Under the Background of New Engineering

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Journal of Contemporary Educational Research 2024年第2期8卷 85-90页

作者： yali Yu Keyi Wang Yong yang College of Mechanical and Electrical Engineering of Harbin Engineering University Harbin 150001Heilongjiang ProvinceChina

Under the background of new engineering,the reform of the comprehensive practical course system for mechanical and electronic engineering majors actively responds to the challenges posed by the new round of technological revolution and industrial transformation to higher education,cultivating top-notch innovative intellectuals with comprehensive engineering qualities,meeting the requirements of being able to solve complex engineering problems rather than just cognitive capabilities,forming two core courses through reconstructing and reshaping the core courses of the *** core courses include Drive,Measurement,and Control I and Drive,Measurement,and Control II,which highlight the comprehensive framework of mechanical and electronic engineering professional knowledge,continuing the comprehensive practical course system based on the unity of knowledge and practice,following the trend of new engineering,highlighting the practicality of professional innovation,assisting engineering education reform,and promoting high-quality development of new engineering professionals cultivation.

关键词： Comprehensive engineering quality Mechanical and Electronic Engineering Practical course system New engineering

Antibacteria activities of phenolics from"Jinshiji"thinned-young apple on halitosis-related bacteria

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Food Bioscience 2022年第3期47卷 793-801页

作者： Ting Liu Tian Gong Furong Wang Xueru Zhou yali yang Yurong Guo College of Food Engineering and Nutritional Science Shaanxi Normal UniversityXi'anPR China National Research and Development Center of Apple Processing Technology PR China

This article aims to explain the inhibitory mechanism of thinned-young apple polyphenols(YAP)toward Fusobacterium nucleatum(***),Porphyromonas gingivalis(***)and Prevotella intermedia(***).YAP has optimal antibacterial concentration against ***(10.00 mg/mL),***(8.00 mg/mL)and ***(8.00 mg/mL),with viability of 47.97%,38.01%and 36.94%,*** electron microscopy(SEM)and confocal laser scanning microscopy(CLSM)observation revealed that YAP could cause the morphological changes of the halitosis-related bacterial cells and induce cell *** the increase of YAP treatment concentrations,the permeability of the outer membranes(OM)and inner membranes(IM)of halitosis-related bacteria dramatically increased,resulting in the release of proteins and nucleic *** addition,bacterial cell membrane potential(MP)decreased after exposure to *** results of this study provide new antibacterial agents for halitosis-related bacteria and find a new way for the development of thinned-young apples.

关键词： Thinned-young apple polyphenols Halitosis Cell membrane F.nucleatum P.gingivalis P.intermedia