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A vehicle-mounted dual-smog chamber:Characterization and its preliminary application to evolutionary simulation of photochemical processes in a quasi-realistic atmosphere

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Journal of Environmental Sciences 2023年第10期132卷 98-108页

作者： wenlu wang Yang Xiao Shijie Han Yang Zhang Daocheng Gong Hao wang Boguang wang Institute for Environmental and Climate Research Jinan UniversityGuangzhou 511443China Australia-China Centre for Air Quality Science and Management(Guangdong) Guangzhou 511443China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Guangzhou 511443China

Smog chambers are the effective tools for studying formation mechanisms of air *** by traditional smog chambers differ to a large extent from real atmospheric conditions,including light,temperature and atmospheric ***,the existing parameters for mechanism interpretation are derived from the traditional smog *** address the gap between the traditional laboratory simulations and the photochemistry in the real atmosphere,a vehicle-mounted indoor-outdoor dual-smog chamber(JNUVMDSC)was developed,which can be quickly transferred to the desired sites to simulate quasi-realistic atmosphere simultaneously in both chambers using“local air”.Multiple key parameters of the smog chamber were characterized in the study,demonstrating that JNUVMDSC meets the requirements of general atmospheric chemistry simulation ***,the preliminary results for the photochemical simulations of quasi-realistic atmospheres in Pearl River Delta region and Nanling Mountains are consistent with literature reports on the photochemistry in this ***-VMDSC provides a convenient and reliable experimental device and means to study the mechanism of atmospheric photochemical reactions to obtain near-real results,and will make a great contribution to the control of composite air pollution.

关键词： Vehicle-mounted dual-smog chamber photochemical processes quasi-realistic atmosphere composite air pollution Pearl River Delta region

Copper-Catalyzed Three-Component Azidotrifluoromethylation/Difunctionalization of Alkenes

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Chinese Journal of Chemistry 2014年第9期32卷 833-837页

作者： Mingbo Yang wenlu wang Yin Liu Lijie Feng Xuexia Ju Gansu Research Institute of Chemical Industry LanzhouGansu 730020China Gansu Province Environmental Monitoring Center LanzhouGansu 730020China

A novel three-component strategy for the azidotrifluoromethylation of alkenes has been presented *** reaction proceeded smoothly under gentle temperature and gave the bifunctional olefins in high ***,1,3-dipolar reactions between azide-containing products and phenylacetylene revealed great potential in molecular modification by using this method.

关键词： azidotrifluoromethylation alkenes azide-containing

Catalase promotes whitefly adaptation to high temperature by eliminating reactive oxygen species

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Insect Science 2023年第5期30卷 1293-1308页

作者： Peng Liang Jie Ning wenlu wang Pu Zhu Lianyou Gui Wen Xie Youjun Zhang Forewarning and Management of Agricultural and Forestry Pests Hubei Engineering Technology CenterInstitute of InsectCollege of AgricultureYangtze UniversityJingzhouHubei ProvinceChina Department of Plant Protection Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijingChina Jinhua Academy of Agricultural Sciences JinhuaZhejiangChina

Thermal stress usually leads to excessive production of reactive oxygen species(ROS)in all aerobic ***(CAT)are the key antioxidant enzymes,which act as the first line of defense against ROS in the antioxidant *** highly invasive and widely distributed whitefly Bemisia tabaci MED damages plants by feeding as well as by transmitting many plant *** studies have shown that strong adaptability to high temperature helps explain the spread of MED around the ***,the mechanism underlying high temperature adaptation of this pest is not well *** this study,6 CAT genes were identified from the MED genome and transcriptome dataset,among which BtCAT1,BtCAT2,and BtCAT3 were found to be highly expressed in *** expression of BtCAT1,BtCAT2,or BtCAT3 increased with induction temperature and induction *** MED was exposed with mean high temperature(30℃ or 35℃)and a short-term extremely high temperature(39℃ or 41℃)after the silencing of BtCAT1,BtCAT2,or BtCAT3 to significantly increased ROS levels by at least 0.5 times and significantly decreased survival rate and fecundity of MED *** ROS level in the treated specimens gradually returned to a normal level after 24 h at 25℃,but the survival rate still declined *** together,our results demonstrate that CAT could help *** adapt to long-term mean high temperatures and short-term extremely high temperatures by eliminating excessive ROS.

关键词： catalase fecundity reactive oxygen species survival rate temperature adap-tation mechanism whitefly

Flexible Load Participation in Peaking Shaving and Valley Filling Based on Dynamic Price Incentives

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Energy Engineering 2024年第2期121卷 523-540页

作者： Lifeng wang Jing Yu wenlu Ji Nanjing Power Supply Company Nanjing210019China State Grid Jiangsu Electric Power Co. Ltd.Nanjing211103China

Considering the widening of the peak-valley difference in the power grid and the difficulty of the existing fixed time-of-use electricity price mechanism in meeting the energy demand of heterogeneous users at various moments or motivating users,the design of a reasonable dynamic pricing mechanism to actively engage users in demand response becomes imperative for power grid *** this purpose,a power grid-flexible load bilevel model is constructed based on dynamic pricing,where the leader is the dispatching center and the lower-level flexible load acts as the ***,an upper-level day-ahead dispatching model for the power grid is established,considering the lowest power grid dispatching cost as the objective function and incorporating the power grid-side ***,the lower level comprehensively considers the load characteristics of industrial load,energy storage,and data centers,and then establishes a lower-level flexible load operation model with the lowest user power-consuming cost as the objective ***,the proposed method is validated using the IEEE-118 system,and the findings indicate that the dynamic pricing mechanism for peaking shaving and valley filling can effectively guide users to respond actively,thereby reducing the peak-valley difference and decreasing users’purchasing costs.

关键词： Demand response fixed time-of-use electricity price mechanism dynamic price incentives mechanism bi-level model flexible load

海洋天然气水合物系统动态调整的异常特征及主控因素

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地质学报 2024年第9期98卷 2541-2556页

作者：王秀娟王文录靳佳澎周吉林匡増桂胡高伟张正一李三忠深海圈层与地球系统教育部前沿科学中心海底科学与探测技术教育部重点实验室中国海洋大学海洋地球科学学院山东青岛266100 海洋矿产资源评价与探测技术功能实验室崂山实验室山东青岛266237 天然气水合物勘查开发国家工程研究中心中国地质调查局广州海洋地质调查局广东广州511458 自然资源部天然气水合物重点实验室中国地质调查局青岛海洋地质研究所山东青岛266237

似海底反射(bottom simulating reflectors,BSRs)是指示天然气水合物赋存深度的重要标识,已在全球多个海域研究中发现了千年时间尺度上天然气水合物系统的动态调整,地震剖面上的典型表征是存在多种类型BSR及埋深变化。本文对比分析全球... 详细信息

似海底反射(bottom simulating reflectors,BSRs)是指示天然气水合物赋存深度的重要标识,已在全球多个海域研究中发现了千年时间尺度上天然气水合物系统的动态调整,地震剖面上的典型表征是存在多种类型BSR及埋深变化。本文对比分析全球典型海域BSR的地震反射特征及测井响应差异,提出BSR调整及发育的主控因素为:①冰期—间冰期旋回、快速沉积、逆冲-褶皱与基底隆升,导致稳定带底界或BSR发生调整;②构造活动释放的热流体导致BSR上移;③海底侵蚀作用、地层超压,导致BSR下移等;④重烃气体形成Ⅱ型水合物,甲烷水合物稳定带底界下部出现水合物与游离气共存层;⑤合适温度条件下细粒沉积物发生矿物相变,形成与水合物无关的双BSR;⑥局部热异常会导致同一水平地层从含天然气水合物向游离气变化,横向上出现极性反转,无BSR调整。不同因素导致的稳定带底界调整,会伴随着水合物的形成—分解—再形成的动态变化,导致地层内水合物-游离气-水的三相共存,同时伴随着多层游离气的复杂分布,在地震剖面上呈现出多种类型BSR,指示天然气水合物系统复杂性及其与游离气间的相互影响。

关键词：天然气水合物游离气 BSR 三相共存动态调整

An Improved Active Miller Clamp Crosstalk Suppression Method for Enhancement-Mode GaN HEMTs in Phase-Leg Configuration

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第5期38卷 758-768页

作者： QIN Haihong wang wenlu BU Feifei PENG Zihe LIU Ao BAI Song College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 211106P.R.China State Key Laboratory of Wide Bandgap Semiconductor Power Electronic Devices Nanjing Electronic Devices InstituteNanjing 210016P.R.China

When using traditional drive circuits,the enhancement-mode GaN(eGaN)HEMT will be affected by high switching speed characteristics and parasitic parameters leading to worse crosstalk ***,the existing crosstalk suppression drive circuits often have the disadvantages of increased switching loss,control complexity,and overall electromagnetic interference(EMI).Therefore,this paper combines the driving loop impedance control and the active Miller clamp method to propose an improved active Miller clamp drive ***,the crosstalk mechanism is analyzed,and the crosstalk voltage model is *** the crosstalk voltage evaluation platform,the influencing factors are evaluated ***,the operating principle of the improved active Miller clamp drive circuit is discussed,and the optimized parameter design method is ***,the effect of the improved active Miller clamp method for suppressing crosstalk is experimentally *** crosstalk voltage was suppressed from 3.5 V and-3.5 V to 1 V and-1.3 V,respectively,by the improved circuit.

关键词： enhancement-mode GaN(eGaN) crosstalk suppression gate driver high-speed switching active clamp

Texture Image Segmentation Using Talbot Effect

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Chinese Journal of Lasers 1995年第3期B4卷 281-286页

作者： wang wenlu JIN Guofan YAN Yingbai WU Minxian(Dept. of Precision Instruments, Tsinghua University, 100084, Beijing, China) Tsinghua Univ Beijing China

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ＴｅｘｔｕｒｅＩｍａｇｅＳｅｇｍｅｎｔａｔｉｏｎＵｓｉｎｇＴａｌｂｏｔＥｆｆｅｃｔ￥ＷＡＮＧＷｅｎｌｕ；ＪＩＮＧｕｏｆａｎ；ＹＡＮＹｉｎｇｂａｉ；ＷＵＭｉｎｘｉａｎ（Ｄｅｐｔ．ｏｆＰｒｅｃｉｓｉｏｎＩｎｓｔｒｕｍｅｎｔｓ，ＴｓｉｎｇｈｕａＵｎｉｖｅｒ...

关键词： Talbot effect texture segmentation

Input-to-State Stability of Impulsive Switched Systems Involving Uncertain Impulse-Switching Moments

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1515-1517页

作者： Chang Liu wenlu Liu Tengda Wei Xiaodi Li School of Mathematical and Statistics Shandong Normal UniversityJinan 250014China

Dear Editor,This letter studies the input-to-state stability(ISS)for a class of impulsive switched systems,where uncertain impulse-switching moments are *** robustness of ISS with respect to the perturbations of the occurrence time of impulse-switching moments is revealed by several less conservative dwell-time conditions for the uncertain impulse-switching moments combined with Lyapunov ***,the Lyapunov conditions have multiple coefficients at discrete time so as to handle the hybrid effect of impulse-switching moments,and the case that time derivative of Lyapunov function is indefinite is also taken into ***,a numerical example is proposed to illustrate the effectiveness of the theoretical results.

关键词： letter conservative derivative

Tau in the pancreas:understanding the link between type 2 diabetes mellitus and Alzheimer's disease

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Signal Transduction and Targeted Therapy 2024年第1期9卷 6-7页

作者： wenlu Li Steffen Tiedt Eng H.Lo Neuroprotection Research Laboratories Departments of Radiology and NeurologyMassachusetts General HospitalHarvard Medical SchoolCharlestownMA02129USA Consortium International pour la Recherche Circadienne sur l’AVC(CIRCA) BostonUSA Institute for Stroke and Dementia Research LMU University HospitalLMU MunichMunichGermany

A recent study published in Molecular Psychiatry proposes a cellular mechanism that may contribute to decreased insulin production in individuals with type 2 diabetes mellitus(T2DM).1 Using a combination of cell culture experiments,animal models and studies in T2DM patients,the authors show that an up-regulation of tau inβ-islet cells can inhibit pancreatic insulin secretion through changes in microtubule assembly.

关键词： T2DM Alzheimer tau