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Analysis of Characteristics of Lightning and Atmospheric Electric Field in Nanchang County

Meteorological and Environmental Research 2020年第1期11卷 1-6页

作者： landi zhong Lei HU Jiangxi Agricultural Meteorological Experimental Station Nanchang 330200China Nanchang Meteorological Bureau Nanchang 330038China

Based on ground observation,lightning locator and atmospheric electric field instrument data,the characteristics of lightning and atmospheric electric field in Nanchang County were analyzed. The warning effect of the atmospheric electric field instruments on lightning was studied,and the threshold of some atmospheric electric field instruments was adjusted according to the expectation of the warning accuracy rate. In Nanchang County,the annual number of thunderstorm days averaged 48. 6. Lightning mainly occurred from March to August,with a maximum of 8. 8 d in August. The lightning areas were mainly concentrated in the south,followed by the north,and the frequency of lightning in the middle was relatively low. The diurnal variation of lightning was obvious,and lightning happened most frequently from afternoon to evening. Five atmospheric electric field instruments were set up according to the lightning areas of Nanchang County. The average electric field intensity on a sunny day was 0. 06,0. 05,0. 16,0. 07,and 0. 17 kV/m respectively,with certain seasonal variations. The field intensity in June was the lowest in the whole year. The atmospheric electric field on a sunny day also had obvious diurnal variation characteristics,generally presenting the characteristics of double peaks and double valleys. The first peak of atmospheric electric field intensity appeared one hour later than that of relative humidity,and then the change trends were relatively consistent. After the adjustment,the warning accuracy rate of the atmospheric electric field instruments was greatly improved to meet the expectation.

关键词： Lightning characteristics Atmospheric electric field Adjustment of warning threshold Nanchang County

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Analysis of Characteristics of a Heavy Rainstorm Process in Nanchang City on July 7,2020

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Meteorological and Environmental Research 2024年第1期15卷 1-7,11页

作者： Fengling ZENG landi zhong Minghua MENG Chongqing Branch Southwest Air Traffic Management BureauCivil Aviation Administration of ChinaChongqing 401120China Nanchang Meteorological Bureau Nanchang 330038China

Based on the conventional observation data,dual polarization radar data and NCEP reanalysis data,the large-scale circulation background field,mesoscale conditions and formation causes of a heavy rainstorm in Nanchang on July 7,2020 were *** was found that this heavy rainstorm occurred under the weather background of the confrontation between the northward air flow behind the trough and the strong southwest warm and humid air flow to the northwest of the subtropical *** divergence at the upper level,the shear in the middle and low levels,the southward movement of cold air at the low level,unusually abundant water vapor and high unstable energy caused the heavy rainstorm *** this process,under the influence of continuous eastward movement of several strong echo cells,an obvious"train effect"was formed in Nanchang,so that the local rainfall was continuous and ***,the average of VIL was about 17 kg/m 2,and its variation characteristics were consistent with the variation trend of 5-min rainfall intensity,which had a certain indicator effect on short-term heavy *** topography of the Meiling Mountain in the west of Nanchang had a great influence on the formation and precipitation distribution of the heavy rain *** was a strong rainstorm center near the mountain,and the precipitation was obviously larger than that in the plain area.

关键词： Short-term heavy precipitation Mesoscale system Train effect Meiling landform

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Study on the Relationship between Characteristics of Haze Days and Lung Cancer in Nanchang City

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Meteorological and Environmental Research 2018年第5期9卷 7-10页

作者： Hu Lei zhong Sirong Chen Xiangxiang zhong landi Jiangxi Agro-meteorological Test Station Nanchang 330200China Jiangxi Agricultural University Nanchang 330045China Jiangxi Meteorological Observatory Nanchang 330096China Nanchang Meteorological Bureau Nanchang 330038China

Based on the conventional meteorological observation data during 1959-2014 and data of lung cancer cases of a third-grade classA tumor hospital in Nanchang City during 1997-2013,the annual variation of haze days in Nanchang City during 1959-2014 and its correlation with the related meteorological factors,as well as the characteristics of different types of lung cancer patients in Nanchang during 1997-2013 were analyzed. A correlation analysis method was used to study the correlation between the number of urban lung cancer patients and the number of haze days and fog days in each month in Nanchang. The lagging period of lung cancer was also discussed. The results show that the number of haze days in Nanchang rose since 1959,which is mainly related to the increase in the emissions of urban pollutants and the decrease of surface wind speed. The average age of female lung cancer was earlier than that of men. The number of men lung cancer patients was significantly larger than that of women. The number of urban lung cancer patients was obviously larger than that in rural areas. Haze had a great impact on the occurrence of lung cancer,with the lagging period of three years. Haze had a greater impact on urban women than urban men. The impact of haze on old people was greater than that of young and middle-aged people.

关键词： Lung cancer Haze days Correlation analysis Nanchang

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Application of Kalman Filter Method in the Forecast of Temperature in Nanchang

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Meteorological and Environmental Research 2024年第4期15卷 32-35页

作者： Feifei WU Xiaoyou LONG Chuanshi TANG landi zhong Nanchang Meteorological Bureau Nanchang 330038China

A temperature forecasting model was created firstly based on the Kalman filter method,and then used to predict the highest and lowest temperature in Nanchang station from October 27 to November 1,***,according to the empirical forecasting method,guidance forecasts were established for the northern,central,and southern parts of Nanchang *** inspection,it was found that the temperature prediction model established based on the Kalman filter method in Nanchang station had good prediction performance,and especially in the 24-hour forecast,it had advantages over the European *** accuracy of low temperature forecast was better than that of high temperature forecast.

关键词： Kalman filter method Temperature forecast Nanchang City

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2020年南昌市大气污染特征与潜在源区

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气象与减灾研究 2021年第4期44卷 290-298页

作者：王刘铭邓超钟兰頔南昌市气象台江西南昌330038

基于南昌市大气环境监测、地面气象观料和GDAS等资料,主要采用后向轨迹聚类分析、潜在源贡献因子和浓度权重轨迹分析方法,分析了2020年南昌市大气污染特征和污染物潜在源区。结果表明:1)南昌市春、夏、秋季以O_(3)污染为主,冬季以PM_(2... 详细信息

基于南昌市大气环境监测、地面气象观料和GDAS等资料,主要采用后向轨迹聚类分析、潜在源贡献因子和浓度权重轨迹分析方法,分析了2020年南昌市大气污染特征和污染物潜在源区。结果表明:1)南昌市春、夏、秋季以O_(3)污染为主,冬季以PM_(2.5)污染为主。2)大气污染物质量浓度日变化具有明显的季节性特征,PM_(2.5)和PM_(10)在春、秋、冬季呈双峰形分布,NO_(2)在秋、冬季呈弱双峰形分布,春、夏季呈单峰分布,O_(3)呈单峰形分布。南昌市东部大气污染较西部更严重。3)南昌市气流输送季节差异明显,春、秋、冬季主要受偏北气流影响,夏季主要受偏南气流影响。本地源是南昌市大气污染的主要潜在源,安徽省南部、湖北省东部、上饶市西部和九江市的区域输送也有一定贡献。

关键词：大气污染时空分布潜在来源南昌市

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

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南昌双偏振天气雷达地物杂波抑制效果分析

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气象与减灾研究 2023年第1期46卷 67-73页

作者：钟兰頔黄亿格戴震天王刘铭邹海波南昌市气象局江西南昌330038 江西师范大学鄱阳湖湿地与流域研究教育部重点实验室江西南昌330022

为评估南昌CINRAD/SAD双偏振天气雷达对地物杂波的抑制效果,使用2019年6—10月南昌单偏振雷达基数据和2022年同期南昌双偏振雷达基数据,对比分析了不同仰角和晴、雨条件下单、双偏振天气雷达反射率频率。结果表明:单、双偏振雷达在0.5... 详细信息

为评估南昌CINRAD/SAD双偏振天气雷达对地物杂波的抑制效果,使用2019年6—10月南昌单偏振雷达基数据和2022年同期南昌双偏振雷达基数据,对比分析了不同仰角和晴、雨条件下单、双偏振天气雷达反射率频率。结果表明:单、双偏振雷达在0.5°仰角因周边山区地形、建筑物遮挡的影响,在西北方向和东南方向存在明显的数据缺失。升级为双偏振雷达后,在各个仰角上周围反射率高频区的范围明显减小,雷达能有效消除雷达站点周边杂波的影响。晴天时,双偏振雷达对晴空杂波的过滤效果极佳;雨天时,双偏振雷达对南昌周边及梅岭山区的回波进行了弱化处理,可以有效减少地形回波、非气象回波的干扰。双偏振天气雷达产品差分相移率和相关系数能较清楚地辨别出虚假回波,可更好地用于确定降水粒子的信息。

关键词：天气雷达杂波抑制反射率频率

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu Guang Yin Fan‑Zhen Jiao zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

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The Citron homology domain of MAP4Ks improves outcomes of traumatic brain injury

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Neural Regeneration Research 2025年第11期20卷 3233-3244页

作者： Xiaoling zhong Wenjiao Tai Meng-Lu Liu Shuaipeng Ma Tianjin Shen Yuhua Zou Chun-Li Zhang Department of Molecular Biology University of Texas Southwestern Medical CenterDallasTXUSA Hamon Center for Regenerative Science and Medicine University of Texas Southwestern Medical CenterDallasTXUSA Peter O’Donnell Jr.Brain Institute University of Texas Southwestern Medical CenterDallasTXUSA

The mitogen-activated protein kinase kinase kinase kinases(MAP4Ks)signaling pathway plays a pivotal role in axonal regrowth and neuronal degeneration following *** targeting this pathway is beneficial to brain injury remains *** this study,we showed that adeno-associated virus-delivery of the Citron homology domain of MAP4Ks effectively reduces traumatic brain injury-induced reactive gliosis,tauopathy,lesion size,and behavioral *** inhibition of MAP4Ks replicated the ameliorative effects observed with expression of the Citron homology ***,the Citron homology domain acted as a dominant-negative mutant,impeding MAP4K-mediated phosphorylation of the dishevelled proteins and thereby controlling the Wnt/β-catenin *** findings implicate a therapeutic potential of targeting MAP4Ks to alleviate the detrimental effects of traumatic brain injury.

关键词： adeno-associated virus Citron homology Citron homology domain gene therapy mitogen-activated protein kinase kinase kinase kinases traumatic brain injury

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Posttraumatic stress symptoms among Chinese university students during the COVID-19 pandemic:Prevalence,correlates,and mental health help-seeking

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World Journal of Psychiatry 2025年第1期15卷 145-152页

作者： Rui-Yao Wu Lin-Feng Ge Bao-Liang zhong Department of Psychiatry The Affiliated Wuhan Mental Health CenterTongji Medical College of Huazhong University of Science&TechnologyWuhan 430012Hubei ProvinceChina Department of Psychiatry Wuhan Mental Health CenterWuhan 430012Hubei ProvinceChina

BACKGROUND Revisiting the epidemiology of posttraumatic stress symptoms(PTSSs)among university students during the coronavirus disease 2019(COVID-19)pandemic as well as understanding the mental health help-seeking behavior of individuals with PTSSs has critical implications for public mental health strategies in future medical *** To investigate the prevalence and correlates of PTSSs among university students during the first wave of the COVID-19 pandemic in China and to examine mental health help-seeking behaviors among these *** A total of 2507 Chinese university students were recruited via snowball *** students completed the Seven-item Screening Scale for Post-traumatic Stress Disorder during the first wave of the COVID-19 pandemic in ***-graphic characteristics,pandemic-related characteristics,and mental health help-seeking behaviors of students with PTSSs were also *** The prevalence of PTSSs among the participants was 28.0%.Seven significant correlates of PTSSs were identified(odds ratio=1.23-3.65,P≤0.024):Female sex,being 19 years old or older,living with others or alone,a low level of family economic status,fair or poor interpersonal relationships,severe or very severe local pandemic,and having family members diagnosed with ***,only 3.28%of the students with PTSSs reported seeking help from mental health *** the 23 students who sought help from mental health specialists,13 opted for online or telephone-based psychological *** Our data suggest that there was a high risk of PTSSs among university students and a high level of unmet mental health needs during the COVID-19 *** delivery of mental health services online or via telephone is a promising approach to address these unmet needs.

关键词： Posttraumatic stress symptoms University students COVID-19 Mental health help-seeking China

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