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Journal of Integrative Agriculture 2021年第6期20卷 1563-1569页

作者： LI Si-nan CHEN Wen MA Xin-yao tian xia-xia LIU Yao HUANG Li-li KANG Zhen-sheng ZHAO Jie State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection Northwest A&F UniversityYangling 712100P.R.China Guizhou Institute of Plant Protection Guizhou Academy of Agricultural SciencesGuiyang 550006P.R.China

Puccinia striiformis *** Erikss.(Pst)infects wheat and causes stripe *** rust is heteroecious with wheat as the primary uredinial and telial host and barberry(Berberis spp.)as the alternate pycnial and aecial *** than 40 Berberis species have been identified as alternate hosts for Pst,and most of these are Chinese Berberis ***,little is known about Berberis species or their geographic distributions in the Yunnan-Guizhou plateau in southwestern *** Yunnan-Guizhou plateau is considered to be an important and relatively independent region for the evolution of the wheat stripe rust pathogen in China because the entire disease cycle can be completed within the *** this study,we conducted a survey of barberry plants in the Yunnan-Guizhou plateau and identified the eight Pst-susceptible Berberis species under controlled conditions,including ***,***,***,***,*** ***,***,*** and *** species are reported here for the first time to serve as alternate hosts for the wheat stripe rust pathogen under controlled conditions.

关键词： Berberis spp. alternate host Puccinia striiformis f.sp.tritici sexual reproduction stripe rust wheat yellow rust

Alternative Strategy for Development of Dielectric Calcium Copper Titanate‑Based Electrolytes for Low‑Temperature Solid Oxide Fuel Cells

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Nano-Micro Letters 2025年第1期17卷 310-332页

作者： Sajid Rauf Muhammad Bilal Hanif Zuhra Tayyab Matej Veis MAKYousaf Shah Naveed Mushtaq Dmitry Medvedev Yibin tian Chen xia Martin Motola Bin Zhu College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Department of Inorganic Chemistry Faculty of Natural SciencesComenius University BratislavaIlkovicova684215 BratislavaSlovakia Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China Hydrogen Energy Laboratory Ural Federal University620002 EkaterinburgRussia Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes Institute of High Temperature Electrochemistry620066 EkaterinburgRussia School of Microelectronics Hubei UniversityWuhan 430062People’s Republic of China

The development of low-temperature solid oxide fuel cells(LT-SOFCs)is of significant importance for realizing the widespread application of *** has stimulated a substantial materials research effort in developing high oxide-ion conductivity in the electrolyte layer of *** this context,for the first time,a dielectric material,CaCu_(3)Ti_(4)O_(12)(CCTO)is designed for LT-SOFCs electrolyte application in this *** individual CCTO and its heterostructure materials with a p-type Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ)(NCAL)semiconductor are evaluated as alternative electrolytes in LT-SOFC at 450–550℃.The single cell with the individual CCTO electrolyte exhibits a power output of approximately 263 mW cm^(-2) and an open-circuit voltage(OCV)of 0.95 V at 550℃,while the cell with the CCTO–NCAL heterostructure electrolyte capably delivers an improved power output of approximately 605 mW cm^(-2) along with a higher OCV over 1.0 V,which indicates the introduction of high hole-conducting NCAL into the CCTO could enhance the cell performance rather than inducing any potential short-circuiting *** is found that these promising outcomes are due to the interplay of the dielectric material,its structure,and overall properties that led to improve electrochemical mechanism in CCTO–***,density functional theory calculations provide the detailed information about the electronic and structural properties of the CCTO and NCAL and their heterostructure CCTO–*** study thus provides a new approach for developing new advanced electrolytes for LT-SOFCs.

关键词： LT-SOFCs Dielectric CaCu_(3)Ti_(4)O_(12) Semiconductor Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ) Ionic conductivity Heterostructure electrolyte

Early stage toxicity of excess copper to photosystem II of Chlorella pyrenoidosa–OJIP chlorophyll a fluorescence analysis

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Journal of Environmental Sciences 2009年第11期21卷 1569-1574页

作者： xia Jianrong tian Qiran School of Environmental Science and Engineering Guangzhou University Guangzhou 510006 China Marine Biology Institute Shantou University Shantou Guangdong 515063 China

Acute toxicity of excess Cu on the photosynthetic performance of Chlorella pyrenoidosa was examined by using chlorophyll a fluorescence transients and JIP-test after exposure to elevated Cu concentrations for a short time period. High Cu concentration resulted in a significant suppression in photosynthesis and respiration. The absorption flux （ABS/RC） per PSII reaction center increased with increasing Cu concentration, but the electron transport flux （ET0/RC） decreased. Excess Cu had an insignificant effect on the trapping flux （TR0/RC）. The decline in the efficiency, with which a trapped exciton can move an electron into the electron transport chain further than QA-（Ψ0）, the maximal quantum yield of primary photochemistry （φP0）, and the quantum yield of electron transport （φE0） were also observed. The amount of active PSII reaction centers per excited cross section （RC/CS） was also in consistency with the change of photosynthesis when cells were exposed to excess Cu concentration. JIP-test parameters had a good linear relationship with photosynthetic O2 evolution. These results suggested that the decrease of photosynthesis in exposure to excess Cu may be a result of the inactivation of PSII reaction centers and the inhibition of electron transport in the acceptor side.

关键词： Chlorella pyrenoidosa chlorophyll a fluorescence Cu PSII

Upconversion nanoparticle mediated optogenetics for targeted deep brain stimulation

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Science Bulletin 2018年第7期63卷 405-407页

作者： tian xia Division of Nano Medicine Department of Medicine California Nano Systems Institute University of California Los Angeles Translational Medical Center for Zhengzhou Central Hospital Zhengzhou University Key Laboratory of Environmental Nanotechnology and Health Effects Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

Brain is often called the last frontier in science[1].It is such an important organ that controls our mind and behavior,yet we know so little about *** gel-like tissue is probably the most complicated object in the universe because it contains about 100 billion nerve cells,equal to the number of stars in our galaxy,the Milky *** neuron is connected to thousands of other nerve cells by up to 40,000 individual connections called synapses。

关键词：大脑指向神经原房间连接

Critical role of immunogenic cell death in cancer therapy

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Science Bulletin 2017年第21期62卷 1427-1429页

作者： tian xia division of nanomedicine department of medicineuniversity of california los angelesCA 90095USA center for environmental implications of nanotechnology(cein) california nano systems institute(cnsi)university of californiaCA 90095USA state key laboratory of environmental chemistry and ecotoxicology research center for eco-environmental scienceschinese academy of sciencesBejing 100085China

In traditional cancer therapy, including chemo and radiation therapy, the goal is always to kill as much cancer cells as possible. However, the truth is that it is difficult to kill 100% of the cancer cells for these therapies and the remaining cells often leads to relapse. So the million-dollar question is, how to eliminate the majority of the remaining cancer cells so that the disease can be manageable in a clinical setting. Currently the best approach that is attracting much attention is cancer immune therapy and excit- ing developments in this field have led to cure in some cases that is unimaginable before [1]. There are two major parts to cancer immune therapy that need to work together to make the therapy successful. One is on the reversal of immune suppressive microen- vironment in cancer to allow the immune cells to target the tumor.

关键词： Critical role of immunogenic cell death cancer therapy

综合护理干预在慢性肾小球肾炎患者中的应用价值

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医学食疗与健康 2020年第13期18卷 113-114页

作者：裘莉莉李彩华田霞霞翟学伟滨州医学院附属医院肾内科山东滨州256600 滨州医学院附属医院消化内科山东滨州256600

目的:探究综合护理干预在慢性肾小球肾炎患者中的应用价值。方法:在2018.12~2019.12时间段中,选取我院收治的40例慢性肾小球肾炎患者作为实验组,给予综合护理干预;同期选取40例慢性肾小球肾炎患者作为对照组,给予常规护理;对比两组护理... 详细信息

目的:探究综合护理干预在慢性肾小球肾炎患者中的应用价值。方法:在2018.12~2019.12时间段中,选取我院收治的40例慢性肾小球肾炎患者作为实验组,给予综合护理干预;同期选取40例慢性肾小球肾炎患者作为对照组,给予常规护理;对比两组护理效果。结果:实验组护理总有效率为95.0%,显著高于对照组的77.5%,差异显著,P<0.05。实验组护理满意率92.5%显著高于对照组的75.0%,差异明显,P<0.05。结论:在慢性肾小球肾炎患者中给予综合护理干预,能够显著改善患者症状,促使护理满意率的提高,促使患者尽早康复,在临床上的应用价值较高。

关键词：综合护理干预慢性肾小球肾炎患者应用价值

New insights into disruption of iron homeostasis by environmental pollutants

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Journal of Environmental Sciences 2015年第8期27卷 256-258页

作者： xiang Wang tian xia Department of Medicine Division of Nano Medicine University of California California Nano Systems Institute University of California

Among the numerous health conditions environmental pollutants can cause, chronic exposure to pollutants including persistent organic pollutants（POPs） and heavy metals has been shown to disturb a specific biological homeostatic process, the iron metabolism in human body. Disorders of iron metabolism are among the common diseases of humans and encompass a broad spectrum of diseases with different clinical manifestations, ranging from anemia to iron overload, and possibly to neurodegenerative diseases and ***–ferroportin（FPN） signaling is one of the key mechanisms responsible for iron supply, utilization, recycling, and storage, and recent studies demonstrated that exposure to environmental pollutants including POPs and heavy metals could lead to disruption of the hepcidin–FPN axis along with disordered systemic iron homeostasis and diseases. This article introduces and highlights the accompanying review article by Drs. Xu and Liu in this journal, which elaborates in detail the adverse effects of environmental pollutants on iron metabolism, and the mechanisms responsible for these toxicological outcomes. It also points out the knowledge gaps still existing in this subject matter. Research that will fill these gaps will improve our understanding of the issue and provide useful information to prevent or treat diseases induced by environmental pollutants.

关键词： Environmental pollution Persistent organic pollutants Heavy metals Iron homeostasis Hepcidin Ferroportin

Cu^(2+)污染下农作物叶片特征光谱探究

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光谱学与光谱分析 2025年第1期45卷 264-271页

作者：张超吴轩杨可明齐钒宇夏天中国地质调查局发展研究中心北京100037 中国地质大学(北京)地球科学与资源学院北京100083 全国地质资料馆北京100037 中国矿业大学(北京)地球科学与测绘工程学院北京100083 中国资源卫星应用中心北京100094

为探究重金属胁迫下农作物污染响应的敏感叶型及谱段,设计了室外温室环境下的不同铜胁迫梯度玉米花盆试验。以玉米叶片为探究对象,利用仪器测定了出穂期玉米叶片的高光谱反射率数据以及叶片中重金属含量数据,为研究提供了基础数据。从... 详细信息

为探究重金属胁迫下农作物污染响应的敏感叶型及谱段,设计了室外温室环境下的不同铜胁迫梯度玉米花盆试验。以玉米叶片为探究对象,利用仪器测定了出穂期玉米叶片的高光谱反射率数据以及叶片中重金属含量数据,为研究提供了基础数据。从频率域角度,结合时频分析的方法设计了叶片光谱探测法(LSDM),获得了重金属铜胁迫下敏感叶型及谱段,为农作物重金属监测提供技术支撑。根据玉米的生长过程,从老叶(O)、中叶(M)、新叶(N)光谱350~1300 nm的全谱段和子谱段角度进行探究。(1)对铜胁迫下玉米叶片的高光谱反射率数据进行双微分(SOD)和包络线移除(CR),转换到频率域上,结合时频分析的方法进行Daubechies小波6层分解。(2)根据信号异常点、小波高值点和SODCR曲线高值点,定义玉米叶片的光谱异常参数(SAP)。异常变化反射率ACR(异常反射率与其后一个相邻波段反射率差值的绝对值);异常小波系数AWC(异常小波系数与其后一个相邻波段小波系数差值的绝对值);异常SODCR值ASV(异常点SODCR值与其后一个相邻波段SODCR值差值的绝对值)。通过光谱异常参数与玉米叶片重金属含量的相关关系,探究对铜污染响应敏感的叶型及谱段。结果表明,叶片光谱探测法LSDM能高效地对玉米叶片弱信息进行增强,并准确定位出重金属铜胁迫引起的光谱异常谱段位置,异常变化范围集中在350~800 nm内;光谱异常参数能定量地衡量玉米叶片在重金属铜胁迫下的光谱异常;在不同铜胁迫梯度下,玉米新叶(N)为敏感叶型,敏感谱段为蓝边、绿峰、黄边、红谷。该研究有望为其他谷类农作物及其冠层尺度重金属监测提供技术支撑。

关键词：重金属胁迫玉米叶片高光谱敏感叶型敏感谱段

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利用废定影液制备超细银粉

信息记录材料 2009年第3期10卷 27-30页

作者：田晓霞傅振堂张超王玉玺申建空军工程大学理学院应用数学与物理系西安710051 空军工程大学理学院学员一旅7队西安710051

通过提取实验室废定影液中的银,采用化学还原法,分别以还原糖溶液、聚乙二醇(PEG)、三乙醇胺(TEA)为还原剂,制备超细银粉,对还原机理进行了分析,探讨了还原剂种类、溶液浓度、反应温度、反应物比例等对银粉形态及粒度大小的影响,采用X... 详细信息

通过提取实验室废定影液中的银,采用化学还原法,分别以还原糖溶液、聚乙二醇(PEG)、三乙醇胺(TEA)为还原剂,制备超细银粉,对还原机理进行了分析,探讨了还原剂种类、溶液浓度、反应温度、反应物比例等对银粉形态及粒度大小的影响,采用X射线衍射仪(XRD)对所得样品物像结构进行了表征。结果表明,以三乙醇胺做还原剂可以制得高纯超细银粉。

关键词：废定影液超细银粉化学还原

ISAR imaging based on improved phase retrieval algorithm

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Journal of Systems Engineering and Electronics 2018年第2期29卷 278-285页

作者： SHI Hongyin xia Saixue tian Ye School of Information Science and Engineering Yanshan University

Traditional inverse synthetic aperture radar(ISAR)imaging methods for maneuvering targets have low resolution and poor capability of noise suppression. An ISAR imaging method of maneuvering targets based on phase retrieval is proposed,which can provide a high-resolution and focused map of the spatial distribution of scatterers on the target. According to theoretical derivation, the modulus of raw data from the maneuvering target is not affected by radial motion components for ISAR imaging system, so the phase retrieval algorithm can be used for ISAR imaging problems. However, the traditional phase retrieval algorithm will be not applicable to ISAR imaging under the condition of random noise. To solve this problem, an algorithm is put forward based on the range Doppler(RD) algorithm and oversampling smoothness(OSS) phase retrieval algorithm. The algorithm captures the target information in order to reduce the influence of the random phase on ISAR echoes, and then applies OSS for focusing imaging based on prior information of the RD algorithm. The simulated results demonstrate the validity of this algorithm, which cannot only obtain high resolution imaging for high speed maneuvering targets under the condition of random noise, but also substantially improve the success rate of the phase retrieval algorithm.

关键词： inverse synthetic aperture radar(ISAR) maneuvering target autofocus imaging phase retrieval oversampling smoothness(OSS)