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Chinese Journal of Aeronautics 2006年第B12期19卷 173-178页

作者： DING Wen-ge yu wei ZHANG jiang-yong HAN Li FU Guang-sheng College of Physics Science and Technology Hebei University Baoding 071002 China

The hydrogenated amorphous silicon nitride （SiNx） thin films embedded with nano-structural silicon were prepared and the micro- structures at the interface of silicon nano-grains/SiNx were identified by the optical absorption and Raman scattering measurements. Characterized by the exponential tail of optical absorption and the band-width of the Raman scattering TO mode, the disorder in the interface region increases with the gas flow ratio increasing. Besides, as reflected by the sub-gap absorption coefficients, the density of interface defect states decreases, which can be attributed to the structural mismatch in the interface region and also the changes of hydrogen content in the deposited films. Additional annealing treatment results in a significant increase of defects and degree of disorder, for which the hydrogen out-diffusion in the annealing process would be responsible.

关键词： silicon nanostructures disorder and defect role of hydrogen

Study on numerical simulation of organic pollutant transport in groundwater northwest of Laixi

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Journal of Groundwater Science and Engineering 2018年第4期6卷 293-305页

作者： ZHU Heng-hua JIA Chao XU yu-liang yu Ze-min yu wei-jiang Shandong Institute of Geological Survey Jinan 250013China Institute of Marine Science and Technology Shandong UniversityQingdao 266237China School of Civil Engineering Shandong UniversityJinan 250061China Shandong Survey and Design Institute of Water Conservancy Jinan 250013China

The construction and hydrogeological area in the low hill, which is northwest of Laixi City and in the east of Shandong Province more precisely, is one of Dagu River's groundwater source. Regarding COD as the typical pollutant according to general situation of groundwater pollution in aforementioned area, a three-dimensional advection-dispersion model was established to simulate the transport of organic pollutants under two accident conditions. In addition, the effect of corresponding dispersity was analyzed. The results show that COD transport is mainly in accordance with the direction of groundwater flow, pollutant concentration and its gradient as well as the rule of narrower pollution range in deeper stratum. Moreover, COD is mainly transported and diffused in groundwater of sandy soil in the first and second layers. However, under accident condition II, the pollutant concentration begins to decay gradually after its transport and diffusion tends to be stable. Besides, in terms of dominance, dispersion is to transverse transport of pollutants what advection is to longitudinal transport. If considering random dispersion, the final results see higher peak concentration of COD and longer transverse distance from pollution center compared to transport route. What's more, the pollution plume changes and concentration isocline becomes slightly irregular.

关键词： COD Advection-dispersion model Law of transport and distribution Dispersivity

Effects of SARS-CoV-2 infection on neuroimaging and neurobehavior in neonates

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World Journal of Pediatrics 2021年第2期17卷 171-179页

作者： Kai Yan Fei-Fan Xiao yu-wei jiang Tian-Tian Xiao Da-jiang Zhang Wen-Hao yuan Jian-Bo Shao Guo-Qiang Cheng Ling-Kong Zeng Department of Neonatology Children’s Hospital of Fudan UniversityNational Children's Medical CenterShanghaiChina Key Laboratory of Neonatal Diseases of Ministry of Health ShanghaiChina Center for Molecular Medicine Children's Hospital of Fudan UniversityNational Children’s Medical CenterInstitutes of Biomedical SciencesFudan UniversityShanghai.China Institute of Neuroscience Key Laboratory of Primate NeurobiologyCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghaiChina Department of Neonatology Chengdu Women's and Children’s Central HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina Department of Radiology Children’s Hospital of Fudan UniversityNational Children's Medical CenterShanghaiChina Department of Neonatology Wuhan Children's Hospital(Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Radiology Wuhan Children's Hospital(Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

Background We collected neonatal neurological,clinical,and imaging data to study the neurological manifestations and imaging characteristics of neonates with coronavirus disease 2019(COVID-19).Methods This case-control study included newborns diagnosed with COVID-19 in Wuhan,China from January 2020 to July *** included newborns had complete neurological evaluations and head magnetic resonance *** normalized the extracted T2-weighted imaging data to a standard neonate template space,and segmented them into gray matter,white matter,and cerebrospinal *** comparison of gray matter volume was conducted between the two *** A total of five neonates with COVID-19 were included in this *** median reflex scores were 2 points lower in the infected group than in the control group(P=0.0094),and the median orientation and behavior scores were 2.5 points lower in the infected group than in the control group(P=0.0008).There were also significant differences between the two groups in the total scale score(P=0.0426).The caudate nucleus,parahippocampal gyrus,and thalamus had the strongest correlations with the Hammersmith neonatal neurologic examination(HNNE)score,and the absolute correlation coefficients between the gray matter volumes and each part of the HNNE score were all almost greater than *** We first compared the neurological performance of neonates with and without COVID-19 by quantitative neuroimaging and neurological examination *** the limited numbers of patients,more studies focusing on the structural or functional aspects of the virus in the central nervous system in different age groups will be carried out in the future.

关键词： Coronavirus disease 2019 Magnetic resonance imaging Neonates Quantitative neuroimaging Severe acute respiratory syndrome coronavirus 2

A broadband self-powered UV photodetector of aβ-Ga2O3/γ-CuI p–n junction

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Chinese Physics B 2022年第2期31卷 342-347页

作者： wei-Ming Sun Bing-Yang Sun Shan Li Guo-Liang Ma Ang Gao wei-yu jiang Mao-Lin Zhang Pei-Gang Li Zeng Liu wei-Hua Tang Laboratory of Information Functional Materials and Devices School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China College of Integrated Circuit Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China National and Local Joint Engineering Laboratory for RF Integration and Micro-Packing Technologies Nanjing University of Posts and TelecommunicationsNanjing 210023China

The symmetric Ti/Au bi-layer point electrodes have been successfully patterned on theβ-Ga;O;films which are prepared by metal–organic chemical vapor deposition(MOCVD)and theγ-Cu I films which are prepared by *** fabricated heterojunction has a large open circuit voltage(Voc)of 0.69 V,desired for achieving self-powered operation of a *** by 254-nm ultraviolet(UV)light,when the bias voltage is-5 V,the dark current(Idark)of the device is 0.47 p A,the photocurrent(Iphoto)is-50.93 n A,and the photo-to-dark current ratio(Iphoto/Idark)reaches about 1.08×10;.The device has a stable and fast response speed in different wavelengths,the rise time(τr)and decay time(τd)are 0.762 s and 1.741 s under 254-nm UV light illumination,*** theτr andτd are 10.709 s and7.241 s under 365-nm UV light illumination,*** time-dependent(I–t)response(photocurrent in the order of10-10 A)can be clearly distinguished at a small light intensity of 1μW·cm;.The internal physical mechanism affecting the device performances is discussed by the band diagram and charge carrier transfer theory.

关键词： β-Ga2O3 γ-CuI heterojunction broadband photodetector self-power

High-responsivity solar-blind photodetector based on MOCVD-grown Si-dopedβ-Ga_(2)O_(3)thin film

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Chinese Physics B 2021年第5期30卷 595-601页

作者： yu-Song Zhi wei-yu jiang Zeng Liu yuan-yuan Liu Xu-Long Chu Jia-Hang Liu Shan Li Zu-Yong Yan yue-Hui Wang Pei-Gang Li Zhen-Ping Wu wei-Hua Tang Laboratory of Information Functional Materials and Devices School of Science&State Key Laboratory of Information Photonics and Optical CommunicationsBeijing University of Posts and TelecommunicationsBeijing 100876China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China The Engineering Research Center for Semiconductor Integrated Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China China Aerospace System Simulation Technology Co. Ltd.(Beijing)Beijing 100195China College of Electronic and Optical Engineering&College of Microelectronics Nanjing University of Posts and TelecommunicationsNanjing 210023China

Si-dopedβ-Ga_(2)O_(3)films are fabricated through metal-organic chemical vapor deposition(MOCVD).Solar-blind ultraviolet(UV)photodetector(PD)based on the films is fabricated by standard photolithography,and the photodetection properties are *** results show that the photocurrent increases to 11.2 mA under 200μW·cm^(-2)254 nm illumination and±20 V bias,leading to photo-responsivity as high as 788 A·W^(-1).The Si-dopedβ-Ga2O3-based PD is promised to perform solar-blind photodetection with high performance.

关键词： Si-dopedβ-Ga_(2)O_(3) metal-organic chemical vapor deposition(MOCVD) solar-blind high responsivity

Acute and chronic excitotoxicity in ischemic stroke and late-onset Alzheimer's disease

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Neural Regeneration Research 2025年第7期20卷 1981-1988页

作者： Shan Ping yu Emily Choi Michael Qjiang Ling wei Department of Anesthesiology Emory University School of MedicineAtlantaGAUSA Center for Visual and Neurocognitive Rehabilitation Atlanta Veterans Affairs Medical CenterDecaturGAUSA

Stroke and Alzheimer's disease are common neurological disorders and often occur in the same *** comorbidity of the two neurological disorders represents a grave health threat to older *** review presents a brief background of the development of novel concepts and their clinical *** activity of glutamatergic N-methyl-D-aspartate receptors and N-methyl-D-aspartate receptor-mediated Ca^(2+)influx is critical for neuronal *** ischemic insult induces prompt and excessive glutamate release and drastic increases of intracellular Ca^(2+)mainly via N-methyl-D-aspartate receptors,particularly of those at the extrasynaptic *** Ca^(2+)-evoked neuronal cell death in the ischemic core is dominated by necrosis within a few hours and days known as acute ***,mild but sustained Ca^(2+)increases under neurodegenerative conditions such as in the distant penumbra of the ischemic brain and early stages of Alzheimer's disease are not immediately toxic,but gradually set off deteriorating Ca^(2+)-dependent signals and neuronal cell loss mostly because of activation of programmed cell death *** on the Ca^(2+)hypothesis of Alzheimer's disease and recent advances,this Ca^(2+)-activated“silent”degenerative excitotoxicity evolves from years to decades and is recognized as a unique slow and chronic *** N-methyl-D-aspartate receptor subunit GluN3A,primarily at the extrasynaptic site,serves as a gatekeeper for the N-methyl-D-aspartate receptor activity and is neuroprotective against both acute and chronic *** stroke and Alzheimer's disease,therefore,share an N-methyl-D-aspartate receptor-and Ca^(2+)-mediated mechanism,although with much different time *** is thus proposed that early interventions to control Ca^(2+)homeostasis at the preclinical stage are pivotal for individuals who are susceptible to sporadic late-onset Alzheimer's disease and Alzheimer's disease-related

关键词： Ca^(2+)hypothesis cognitive deficits hyperactivity late-onset Alzheimer's disease neurodegeneration N-methyl-D-aspartate receptors N-methyl-D-aspartate receptor subunits pathogenesis preventive treatment

A DISTRIBUTED COOPERATIVE MULTICAST SCHEDULING STRATEGY IN IEEE 802.11 NETWORKS

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Journal of Electronics(China) 2011年第3期28卷 334-340页

作者： Song Liubin Xu Youyun Xie wei yu jiang Institute of Communications Engineering PLA University of Science and Technology Nanjing 210007 China

In wireless multicast, some users may fail to receive data as a result of bad channel con-ditions. The throughput of traditional multicast strategy is constrained by the node with the worst channel condition. In this paper, we propose a distributed cooperative multicast scheduling strategy, in which, every user which has successfully received data can decide whether to retransmit data by sensing MNACK packets. The proposed scheme can achieve good throughput by exploiting multi-channel diversity across multiple users' cooperation. In addition, the constraint of power consumption is also considered. Simulation results show that our scheme can provide good throughput and fairness per-formance with the constraint of average system power consumption.

关键词： Distributed Cooperative Multicast IEEE 802.11

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高校科技成果转化的制度困境与规避思路

清华大学教育研究 2017年第4期38卷 108-112,116页

作者：赵雨菡魏江吴伟浙江大学管理学院浙江杭州310058 浙江大学中国科教战略研究院浙江杭州310058

《促进科技成果转化法》修订一年多以来,高校科技成果转化并未如社会预期那么显著,原因在于根本性制度障碍没有完全消除。同时,不少体制和机制性问题仍制约高校科技成果有效转化,包括所有权归属、成果定价、产权处置、转化流程、收益分... 详细信息

《促进科技成果转化法》修订一年多以来,高校科技成果转化并未如社会预期那么显著,原因在于根本性制度障碍没有完全消除。同时,不少体制和机制性问题仍制约高校科技成果有效转化,包括所有权归属、成果定价、产权处置、转化流程、收益分配等方面。高校应进一步鼓励教师创业、师生联合创业、企业项目委托、中介机构入股、科技成果混合所有制等成果转化模式,以规避制度困境。为此,本文提出明确转化责任机构、简化转化流程、鼓励技术服务、完善中介体系、保护科研人员知识所有权等政策建议。

关键词：科技成果转化制度困境知识所有权收益分配

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中医问诊内容及客观化研究探析

中华中医药杂志 2019年第8期34卷 3666-3668页

作者：黄玮余江维贵州中医药大学

问诊是中医四诊之一,是中医特色诊疗方法之一,在中医诊察疾病过程中具有重要作用。文章检索国内外相关研究文献,从初期、中期、成熟期3个阶段对中医问诊的发展历程进行概括。从中医问诊专科量表的研制、智能系统的开发及使用、中医症状... 详细信息

问诊是中医四诊之一,是中医特色诊疗方法之一,在中医诊察疾病过程中具有重要作用。文章检索国内外相关研究文献,从初期、中期、成熟期3个阶段对中医问诊的发展历程进行概括。从中医问诊专科量表的研制、智能系统的开发及使用、中医症状名称术语规范等方面,对中医问诊客观化研究现状进行了论述。通过上述较为系统的研究,提出了当前中医问诊客观化研究中存在的问题,并针对这些问题进行了展望,为问诊的进一步研究提供帮助。

关键词：中医问诊客观化

Ideal Bi‑Based Hybrid Anode Material for Ultrafast Charging of Sodium‑Ion Batteries at Extremely Low Temperatures

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Nano-Micro Letters 2025年第3期17卷 152-167页

作者： Jie Bai Jian Hui Jia yu Wang Chun Cheng Yang Qing jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and EngineeringJilin UniversityChangchun 130022People’s Republic of China

Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at−20°C or ***,the key capability of ultrafast charging at ultralow temperature for SIBs is rarely ***,a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue,which is synthesized via a high temperature shock *** a hybrid shows an unprecedented rate performance(237.9 mAh g^(−1)at 2 A g^(−1))at−60℃,outperforming all reported SIB anode *** with a Na_(3)V_(2)(PO_(4))_(3)cathode,the energy density of the full cell can reach to 181.9 Wh kg^(−1)at−40°*** on this work,a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries