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Hygroscopicity and optical properties of alkylaminium sulfates

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Journal of Environmental Sciences 2014年第1期26卷 37-43页

作者： Dawei hu Chunlin Li hui Chen Jianmin Chen Xingnan Ye Ling Li Xin Yang Xinming Wang Abdelwahid Mellouki zhongyang hu Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Fudan Tyndall CentreDepartment of Environmental Science￡Engineering Fudan University Institut de Combustion Arothermique Ractivit et Environnement Centre National de la Recherche Scientifique Chinese Acad Sci State Key Laboratory Organ Geochem Guangzhou Inst Geochem Dionex Corporation

The hygroscopicity and optical properties of alkylaminium sulfates （AASs） were investigated using a hygroscopicity tandem differential mobility analyzer coupled to a cavity ring-down spectrometer and a nephelometer. AAS particles do not exhibit a deliquescence phenomenon and show a monotonic increase in diameter as the relative humidity （RH） ascends. Hygroscopic growth factors （GFs） for 40, 100 and 150 nm alkylaminium sulfate particles do not show an apparent Kelvin effect when RH is less than 45%, whereas GFs of the salt aerosols increase with initial particle size when RH is higher than 45%. Calculation using the Zdanovskii-Stokes-Robinson mixing rule suggests that hygroscopic growth of triethylaminium sulfate-ammonium sulfate mixtures is non-deliquescent, occurring at very low RH, implying that the displacement of ammonia by amine will significantly enhance the hygroscopicity of （NH4）2SO4 aerosols. In addition, light extinction of AAS particles is a combined effect of both scattering and absorption under dry conditions, but is dominated by scattering under wet conditions.

关键词： hygroscopicity optical properties alkylaminium sulfates

SMSTracker:A Self-Calibration Multi-Head Self-Attention Transformer for Visual Object Tracking

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Computers, Materials & Continua 2024年第7期80卷 605-623页

作者： zhongyang Wang hu Zhu Feng Liu School of Communications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing210003China

Visual object tracking plays a crucial role in computer *** recent years,researchers have proposed various methods to achieve high-performance object *** these,methods based on Transformers have become a research hotspot due to their ability to globally model and contextualize ***,current Transformer-based object tracking methods still face challenges such as low tracking accuracy and the presence of redundant feature *** this paper,we introduce self-calibration multi-head self-attention Transformer(SMSTracker)as a solution to these *** employs a hybrid tensor decomposition self-organizing multihead self-attention transformermechanism,which not only compresses and accelerates Transformer operations but also significantly reduces redundant data,thereby enhancing the accuracy and efficiency of ***,we introduce a self-calibration attention fusion block to resolve common issues of attention ambiguities and inconsistencies found in traditional trackingmethods,ensuring the stability and reliability of tracking performance across various *** integrating a hybrid tensor decomposition approach with a self-organizingmulti-head self-attentive transformer mechanism,SMSTracker enhances the efficiency and accuracy of the tracking *** results show that SMSTracker achieves competitive performance in visual object tracking,promising more robust and efficient tracking systems,demonstrating its potential to providemore robust and efficient tracking solutions in real-world applications.

关键词： Visual object tracking tensor decomposition transformer self-attention

Neuroprotective effects of willed-movement therapy in a rat model of cerebral ischemia/reperfusion

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Neural Regeneration Research 2011年第35期6卷 2756-2760页

作者： Deren Hou Jianfeng Liu Jinfeng Deng zhongyang hu Chao Feng Haixia Zhu Department of Neurology Third Xiangya Hospital Central South University Changsha 410013 Hunan Province China Department of General Surgery Third Xiangya Hospital Central South University Changsha 410013 Hunan Province China

The present study established rat models of middle cerebral artery ischemia/reperfusion using the thread method. Rats performed willed-movement （climbing a ladder or wall in a box） when induced by food and water. Results revealed that Longa scores of neurological deficits significantly decreased in the willed-movement group at 15 days after reperfusion, while expression of glial fibrillary acidic protein, neurotrophic factor-3, and growth-associated protein-43 significantly increased at 7 and 15 days after reperfusion. Results suggested that willed-movement ameliorated neurological deficits by increasing expression of glial fibriliary acidic protein, neurotrophic factor-3, and growth-associated protein-43.

关键词： cerebral ischemia/reperfusion glial fibrillary acidic protein growth-associated protein 43 neural regeneration willed-movement neurotrophic factor-3

Cloud-based storage and computing for remote sensing big data:a technical review

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International Journal of Digital Earth 2022年第1期15卷 1417-1445页

作者： Chen Xu Xiaoping Du Xiangtao Fan Gregory Giuliani zhongyang hu Wei Wang Jie Liu Teng Wang Zhenzhen Yan Junjie Zhu Tianyang Jiang huadong Guo Key Lab of Digital Earth Sciences Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China International Research Center of Big Data for Sustainable Development Goals BeijingPeople’s Republic of China College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China Institute for Environmental Sciences/GRID-Geneva University of GenevaGenevaSwitzerland Institute for Marine and Atmospheric research Utrecht (IMAU) Utrecht UniversityUtrechtThe Netherlands State Key Laboratory of Computer Science Institute of SoftwareChinese Academy of SciencesBeijingPeople’s Republic of China Tianyi Cloud People’s Republic of China Telecom Co.LtdGuangzhouPeople’s Republic of China Department of Computer Science and Technology Tsinghua UniversityBeijingPeople's Republic of China

The rapid growth of remote sensing big data(RSBD)has attracted considerable attention from both academia and *** the progress of computer technologies,conventional computing implementations have become technically inefficient for processing *** computing is effective in activating and mining large-scale heterogeneous data and has been widely applied to RSBD over the past *** study performs a technical review of cloud-based RSBD storage and computing from an interdisciplinary viewpoint of remote sensing and computer ***,we elaborate on four critical technical challenges resulting from the scale expansion of RSBD applications,*** storage,metadata management,data homogeneity,and computing ***,we introduce state-of-the-art cloud-based data management technologies for RSBD *** unit for manipulating remote sensing data has evolved due to the scale expansion and use of novel technologies,which we name the RSBD data *** data models are suggested,***,ARD,data cubes,and composite ***,we summarize recent research on the application of various cloud-based parallel computing technologies to RSBD computing ***,we categorize the architectures of mainstream RSBD *** research provides a comprehensive review of the fundamental issues of RSBD for computing experts and remote sensing researchers.

关键词： Remote sensing big data cloud computing data cube analysis ready data parallel computing data model

Anemarsaponin B mitigates acute pancreatitis damage in mice through apoptosis reduction and MAPK pathway modulation

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BIOCELL 2024年第5期48卷 745-758页

作者： YI hu zhongyang REN ZHENGZHONG ZHAO YONGJIA huANG WANTING huANG JIE LIU LING DING Gastroenterology Department Chongqing University Jiangjin HospitalJiangjin Central Hosptial of ChongqingChongqingChina Surgical Department Chongqing Jiangjin District Hospital of Chinese MedicineChongqingChina Pharmacy Department Chongqing University Jiangjin HospitalJiangjin Central Hosptial of ChongqingChongqingChina

Background:Acute pancreatitis(AP),known for its rapid onset and significant incidence and mortality rates,presents a clinical challenge due to the limited availability of effective treatments and preventive *** B(ASB)has emerged as a potential therapeutic agent,demonstrating capabilities in reducing immune inflammation,positioning it as a promising candidate for AP ***:We investigated the effects of ASB on AP in mice,induced by caerulein and lipopolysaccharide(LPS).Peripheral blood samples were collected 24 h post-induction with caerulein to assess of key biomarkers including lipase,amylase,TNF-α,IL-1β,IL-6,SOD,and GSH-Px.A range of techniques such as immunohistochemistry staining,immunofluorescence staining,Western blotting,and quantitative Polymerase Chain Reaction(q-PCR),were employed to measure the expression of critical ***,pancreas samples from the mice were harvested for microbiome and metabolome sequencing,with the data analyzed to understand the impact of ASB on ***:Our study revealed that,compared to the sham group,the AP group exhibited significantly higher serum levels of lipase,amylase,and cytokines,while levels of SOD and GSH Px were notably *** with ASB led to a substantial decrease in the levels of lipase,amylase,and cytokines,and an increase in SOD and GSH-Px levels.q-PCR analysis of pancreatic histiocytes corroborated these serum *** and Eosin(H&E)staining indicated significant alterations in the pathological changes in the pancreas,lungs,and small intestine of the AP model due to *** assays demonstrated that ASB alleviated the apoptosis of pancreatic histiocytes in the AP *** Blot and histological analyses showed that ASB reduced the phosphorylation of TAK,p38,JNK,and ERK proteins,as well as the levels of TRAF6 protein in the AP ***,metabolomic and gut microbiota analysis identified 27 differential metabolites and 34 diffe

关键词： Anemarsaponin B Acute pancreatitis Cytokines MAPK TRAF6 Gut flora

面向县级森林经营规划编制的辅助程序设计与应用

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北京林业大学学报 2020年第12期42卷 24-31页

作者：胡中洋刘锐之刘萍华南农业大学林学与风景园林学院广东广州510642 国家林业和草原局西北调查规划设计院陕西西安710048

【目的】为维护国家生态安全,全面提升森林质量,原国家林业局于2018年下发《县级森林经营规划编制规范》,首次要求全国各县市开展县级森林经营规划编制工作,将县级森林经营规划作为未来三十多年县级森林经营的指导文件。由于县级森林经... 详细信息

【目的】为维护国家生态安全,全面提升森林质量,原国家林业局于2018年下发《县级森林经营规划编制规范》,首次要求全国各县市开展县级森林经营规划编制工作,将县级森林经营规划作为未来三十多年县级森林经营的指导文件。由于县级森林经营规划编制专业性强、工作量大、时间要求短,因此,开发辅助程序对优质高效完成县级森林经营规划编制具有重要的实践意义。【方法】基于MATLAB 2014a平台,依据原国家林业局《县级森林经营规划编制规范》,采用MATLAB语言,开发县级森林经营规划编制辅助程序。【结果】县级森林经营规划编制辅助程序包含森林经理调查数据预处理、森林经营类型组织、森林作业法设计、森林经营区划分、森林经营投资估算、森林经营规划数据库导出、文本与绘图编辑等功能模块,并将该辅助程序用于广东省封开县、海丰县、高州市、化州市、信宜市和佛山顺德区6个县级森林经营规划编制中,实现森林经营类型组织、森林作业法设计、森林经营区划分等功能模块高效快速处理技术,满足编制规划基本需求。【结论】辅助程序界面友好,安全稳定,扩展性强,大大提高了县级森林经营规划编制质量和效率。辅助程序部分功能也可用于森林经营方案编制和其他有关林业调查规划设计。

关键词：森林经营方案森林经营类型森林作业法 MATLAB

脂蛋白相关磷脂酶A2与缺血性脑卒中相关性的Meta分析

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中南大学学报（医学版） 2017年第2期42卷 208-214页

作者：夏文翠胡中扬宋治中南大学湘雅三医院神经内科长沙410013 宁乡县人民医院神经内科湖南宁乡410600

目的:用Meta分析的方法探讨脂蛋白相关磷脂酶A2(lipoprotein-associated phospholipase A2,Lp-PLA2)与缺血性脑卒中发生的相关性。方法:在线检索Pub Med,Web of Science,Embase和Cochrane Library以及中国生物医学文献数据库、中国期刊全文数据库、重庆维普和万方数字化期刊全文数据库中关于Lp-PLA2与缺血性脑卒中相关性的病例对照研究或队列研究,采用Stata 12.0软件对入选研究进行Meta分析。结果:共有8篇文献46 034例符合纳入标准。Meta分析结果显示:Lp-PLA2水平与缺血性脑卒中发生的合并效应量的危险比(95%可信区间)[RR(95%CI)]为1.04(0.98~1.11),提示Lp-PLA2水平与缺血性卒中发生无相关性。Lp-PLA2活性与缺血性脑卒中发生的相关性合并效应量RR(95%CI)为1.03(0.96~1.10),提示Lp-PLA2活性与缺血性卒中发生无相关性。结论:目前不能认为Lp-PLA2水平及Lp-PLA2活性可以预测缺血性脑卒中的发生,高Lp-PLA2水平及高Lp-PLA2活性是缺血性脑卒中发病的危险因素的结论有待进一步论证。

关键词：脂蛋白相关磷脂酶A2 缺血性卒中 Meta分析

Non-destructive buffer enabling near-infrared-transparent inverted inorganic perovskite solar cells toward 1400 h light-soaking stable perovskite/Cu(In,Ga)Se_(2) tandem solar cells

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Journal of Energy Chemistry 2024年第10期97卷 622-629,I0013页

作者： Yu Zhang Zhaoheng Tang zhongyang Zhang Jiahong Tang Minghua Li Siyuan Zhu Wenyan Tan Xi Jin Tongsheng Chen Jinsong hu Chao Zhou Chunlei Yang Qijie Liang Xugang Guo Weimin Li Weiqiang Chen Yan Jiang MOE Key Laboratory of Laser Life Science&Guangdong Provincial Key Laboratory of Laser Life Science Guangzhou Key Laboratory of Spectral Analysis and Functional ProbesCollege of BiophotonicsSouth China Normal UniversityGuangzhou 510631GuangdongChina school of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Songshan Lake Materials Laboratory Dongguan 523429GuangdongChina Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Functional Oxide Materials and DevicesSouthern University of Science and TechnologyShenzhen 518055GuangdongChina Beijing Advanced Innovation Center for Soft Matter Science and Engineering College of Chemical EngineeringCollege of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China Department of Physics Liaoning UniversityShenyang 110036LiaoningChina Beijing National Laboratory for Molecular Sciences(BNLMS) Institute of ChemistryChinese Academy of SciencesBeijing 100190China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006GuangdongChina Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 18055GuangdongChina

Near-infrared(NIR)transparent inverted all-inorganic perovskite solar cells(PSCs)are excellent top cell candidates in tandem *** essential challenge is the replacement of metal contacts with transparent conductive oxide(TCO)electrodes,which requires the introduction of a buffer layer to prevent sputtering *** this study,we show that the conventional buffers(i.e.,small organic molecules and atomic layer deposited metal oxides)used for organic-inorganic hybrid perovskites are not applicable to all-inorganic perovskites,due to non-uniform coverage of the vulnerable layers underneath,deterioration upon ion bombardment and moisture induced perovskite phase transition,A thin film of metal oxide nanoparticles by the spin-coating method serves as a non-destructive buffer layer for inorganic ***-inorganic inverted near-infrared-transparent PSCs deliver a PCE of 17.46%and an average transmittance of 73.7%between 780 and 1200 *** combination with an 18.56%Cu(In,Ga)Se_(2) bottom cell,we further demonstrate the first all-inorganic perovskite/CIGS 4-T tandem solar cell with a PCE of 24.75%,which exhibits excellent illumination stability by maintaining 86.7%of its initial efficiency after 1400 *** non-destructive buffer lays the foundation for efficient and stable NIR-transparent inverted inorganic perovskite solar cells and perovskite-based tandems.

关键词： CsPbI_(3)perovskite Inverted perovskite solar cells Tandem solar cells Buffer layer Stability

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灰化苔草叶片铜污染的高光谱响应研究

环境工程学报 2016年第2期10卷 999-1004页

作者：宋鹏飞张丹倪才英胡中阳江西师范大学地理与环境学院南昌330022 江西师范大学鄱阳湖湿地与流域研究教育部重点实验室南昌330022

为了鄱阳湖湿地的生态安全,通过土壤盆栽实验,研究了不同Cu浓度（0、50、100、150、200和300 mg/kg）下灰化苔草（Carex cinerascens）在整个生长发育期内叶片光谱参数和叶绿素的变化过程。结果表明,灰化苔草对Cu的耐性上限浓度不超过30... 详细信息

为了鄱阳湖湿地的生态安全,通过土壤盆栽实验,研究了不同Cu浓度（0、50、100、150、200和300 mg/kg）下灰化苔草（Carex cinerascens）在整个生长发育期内叶片光谱参数和叶绿素的变化过程。结果表明,灰化苔草对Cu的耐性上限浓度不超过300 mg/kg;随着添加Cu浓度的升高,叶片Cu含量和土壤有效态Cu含量均逐渐升高,叶片SPAD值渐次降低;叶片Cu含量与红谷深度、红边峰值、红边斜率、R750-1250 nm等光谱特征值之间均呈现显著的负相关关系;灰化苔草最佳监测生育期为生长期。由此,为鄱阳湖湿地生态健康变化进行快速诊断提供了科学依据。

关键词：灰化苔草铜污染敏感浓度光谱特征参数