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西安夏季大气亚微米颗粒物化学组成与来源的在线观测研究

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地球环境学报 2021年第2期12卷 170-182页

作者：李致宇张新王启元 Andrés.H.Prévôt 曹军骥韩月梅中国科学院地球环境研究所黄土与第四纪地质国家重点实验室中国科学院气溶胶化学与物理重点实验室西安710061 中国科学院第四纪科学与全球变化卓越创新中心西安710061 中国科学院大学北京100049 Laboratory of Atmospheric Chemistry Paul Scherrer Institute(PSI)5232 VilligenSwitzerland

西安作为汾渭平原地区最大的城市,大气颗粒物污染形势严峻。2017年夏季期间,在西安市浐灞生态园区运用气溶胶化学组分监测仪,对大气亚微米颗粒物中的非难挥发性组分(NR-PM_(1))进行了在线监测。观测期间NR-PM_(1)的平均质量浓度为(30.1... 详细信息

西安作为汾渭平原地区最大的城市,大气颗粒物污染形势严峻。2017年夏季期间,在西安市浐灞生态园区运用气溶胶化学组分监测仪,对大气亚微米颗粒物中的非难挥发性组分(NR-PM_(1))进行了在线监测。观测期间NR-PM_(1)的平均质量浓度为(30.1±15.4)μg∙m^(−3)。其中有机物含量最高,占NR-PM_(1)总质量浓度的63%,其次为硫酸盐(18%)、铵盐(10%)和硝酸盐(9%)。运用正交矩阵因子分析法共解析出两个主要因子,包括烃类有机组分(HOA)和含氧有机组分(OOA),分别占有机物总质量浓度的43%和55%。HOA主要由机动车排放贡献,而OOA主要由气态污染物的二次反应生成。气象因素对NR-PM_(1)的浓度与化学组分的影响较为显著。高硝酸盐阶段发生在高湿、低温条件,可能是由氮氧化物的液相反应产生的。高硫酸盐阶段发生在低湿、高温条件,主要来自于大气光化学反应的贡献。该研究结果为西安及周边地区的空气污染治理决策提供重要的理论依据。

关键词：亚微米颗粒物化学组成来源大气过程气溶胶化学组分监测仪

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Intermediary RRT*-PsO:A Multi-Directional Hybrid Fast Convergence sampling-Based Path Planning Algorithm

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Computers, Materials & Continua 2023年第8期76卷 2281-2300页

作者： Loc Q.Huynh Ly v.Tran Phuc N.K.Phan Zhiqiu Yu son v.T.Dao school of Industrial Engineering and Management International UniversityVietnam National University HCMCHo Chi Minh City700000Vietnam Department of Industrial Management National Taiwan University of Science and TechnologyTaipei City106335Taiwan

Path planning is a prevalent process that helps mobile robots find the most efficient pathway from the starting position to the goal position to avoid collisions with *** this paper,we propose a novel path planning algorithm-Intermediary RRT*-PsO-by utilizing the exploring speed advantages of Rapidly exploring Random Trees and using its solution to feed to a metaheuristic-based optimizer,Particle swarm optimization(PsO),for fine-tuning and *** Phase 1,the start and goal trees are initialized at the starting and goal positions,respectively,and the intermediary tree is initialized at a random unexplored region of the search *** trees were grown until one met the other and then merged and re-initialized in other unexplored *** the start and goal trees merge,the first solution is found and passed through a minimization process to reduce unnecessary *** 2 begins by feeding the minimized solution from Phase 1 as the global best particle of PsO to optimize the *** simulating two special benchmark configurations and six practice configurations with special cases,the results of the study concluded that the proposed method is capable of handling small to large,simple to complex continuous environments,whereas it was very tedious for the previous method to achieve.

关键词： Motion planning global path planning rapidly exploring random trees particle swarm optimization

Hepatitis B down under:consensus recommendations from the Gastroenterological society of Australia

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Hepatobiliary surgery and Nutrition 2023年第5期12卷 768-771页

作者： vignan Manne Kris v.Kowdley Division of Gastroenterology and Hepatology University of NevadaLas Vegas Kirk Kerkorian School of MedicineLas VegasNVUSA Liver Institute Northwest Washington state University SeattleWAUSA

Chronic hepatitis B(CHB)represents a global public burden with an estimated 296 million people infected worldwide(1).It is a leading cause of morbidity and mortality related to chronic liver disease and hepatocellular carcinoma(HCC)(2-5).The prevalence of CHB can range from populations with low prevalence(s with high prevalence(>8%).Current recommendations for screening use a prevalence of over 2%as the cutoff to start screening a population(2-5).Australia has a diverse population in which the prevalence of CHB differs between certain subgroups(6,7).

关键词： Chronic hepatitis B(CHB) guidelines Gastroenterological society of Australia(GEsA)

Advancements in the Development of various Types of Dye-sensitized solar Cells:A Comparative Review

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Energy Engineering 2021年第4期118卷 737-759页

作者： sandhia Bai A.K.Amirruddin A.K.Pandey M.samykano Muhammad shakeel Ahmad Kamal sharma v.v.Tyagi Department of Mechanical Engineering College of EngineeringUniversity Malaysia PahangPahang26300Malaysia Research Centre for Nano-Materials and Energy Technology School of Engineering and TechnologySunway UniversitySelangor47500Malaysia Higher Institution Centre of Excellence UM Power Energy Dedicated Advanced CentreUniversity of MalayaKuala Lumpur59990Malaysia Department of Mechanical Engineering Institute of Engineering and TechnologyGLA UniversityMathura281406India school of Energy Management Shri Mata Vaishno Devi UniversityKatraJammu and Kashmir182320India

The global increase in energy demand has resulted in the depletion of non-renewable resources and caused environmental ***,emerging renewable technologies are a potential solution to fulfil energy demand and mitigate the effect of global ***-cost solar energy harvesting technologies are most feasible *** solar cells technologies have been developed with improved overall performance and conversion ***,due to low cost and a wide range of applications,dye-sensitized solar cells(DssCs)have been immensely focused on one of the most promising third-generation solar *** highest conversion efficiency of DssC achieved after three decades of research is more than 14%,but the commercialization of this technology is still a *** this review paper,an attempt has been made to present the comparison of different articles published,that gives the in-depth study of recent developments in various types of DssCs based on architectural assembly and physical *** overview of the limitations and challenges with their possible improvement strategies have also been *** review paper concludes that appropriate selection of electrolytes dramatically affects the performance of DssC,and quasi-solid-state electrolyte proves to be a better ***,it also concludes that tandem structures are widely agreed with the approach to expand light utilization spectrum for an overall increase in its ***,still,the research is required,which could efficiently widen the applications of the DssCs.

关键词： Dye-sensitized solar cells solar energy architectural assembly quasi-solid electrolyte tandem structures

NKCC1 and NKCC2:The pathogenetic role of cation-chloride cotransporters in hypertension

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Genes & Diseases 2015年第2期2卷 186-196页

作者： sergei N.Orlov svetlana v.Koltsova Leonid v.Kapilevich svetlana v.Gusakova Nickolai O.Dulin Faculty of Biology M.V.Lomonosov Moscow State UniversityRussia Tomsk state University Russia siberian state Medical University Russia University of Chicago Department of Medicine USA

This review summarizes the data on the functional significance of ubiquitous(NKCC1)and renal-specific(NKCC2)isoforms of electroneutral sodium,potassium and chloride *** carriers contribute to the pathogenesis of hypertension via regulation of intracellular chloride concentration in vascular smooth muscle and neuronal cells and via sensing chloride concentration in the renal tubular fluid,*** NKCC1 and NKCC2 are inhibited by furosemide and other high-ceiling diuretics widely used for attenuation of extracellular fluid ***,the chronic usage of these compounds for the treatment of hypertension and other volume-expanded disorders may have diverse side-effects due to suppression of myogenic response in microcirculatory beds.

关键词： Hypertension Intracellular chloride Myogenic tone Neuronal cell NKCC cotransport smooth muscle

In vitro characterization of novel nanostructured collagen-hydroxyapatite composite scaffolds doped with magnesium with improved biodegradation rate for hard tissue regeneration

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Bioactive Materials 2021年第10期6卷 3383-3395页

作者： Iulian v.Antoniac Aurora Antoniac Eugeniu vasile Camelia Tecu Marco Fosca viktoriya G.Yankova Julietta v.Rau University Politehnica of Bucharest 313 Splaiul Independentei StreetDistrict 6060042BucharestRomania Academy of Romanian scientists 54 Splaiul Independentei StreetDistrict 5050094BucharestRomania Istituto di struttura della Materia Consiglio Nazionale delle Ricerche(ISM-CNR)Via del Fosso del Cavaliere10000133RomeItaly sechenov First Moscow state Medical University Institute of PharmacyDepartment of AnalyticalPhysical and Colloid ChemistryTrubetskaya 8Build.2Moscow119991Russia

New materials are required for bone healing in regenerative medicine able to temporarily substitute damaged bone and to be subsequently resorbed and replaced by endogenous *** inspiration from basic composition of the mammalian bones,composed of collagen,apatite and a number of substitution ions,among them magnesium(Mg2+),in this work,novel composite scaffolds composed of collagen(10%)-hydroxyapatite(HAp)(90%)and collagen(10%)-HAp(80%)-Mg(10%)were *** lyophilization was used for composites *** insight into the nanostructural nature of the developed scaffolds was performed by scanning Electron Microscopy coupled with Energy Dispersive X-Ray and Transmission Electron Microscopy coupled with Energy Dispersive *** HAp nanocrystallite clusters and Mg nanoparticles were homogeneously distributed within the scaffolds and adherent to the collagen *** samples were tested for degradation in simulated Body Fluid(sBF)solution by soaking for up to 28 *** release of Mg from collagen(10%)-HAp(80%)-Mg(10%)composite during the period of up to 21 days was attested,this composite being characterized by a decreased degradation rate with respect to the composite without *** developed composite materials are promising for applications as bone substitute materials favouring bone healing and regeneration.

关键词： Composite Collagen Hydroxyapatite Magnesium scaffold Hard tissue regeneration scaffold degradation

Coastal wetlands in Lianyungang,Jiangsu Province,China:probably the most important site globally for the Asian Dowitcher(Limnodromus semipalmatus)

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Avian Research 2021年第3期12卷 364-374页

作者： Ziyou Yang Jing Li Yongxiang Han Chris J.Hassell Kar-sin Katherine Leung David s.Melville Yat-tung Yu Lin Zhang Chi-Yeung Choi spoon-Billed sandpiper(shanghai)Environmental Protection Technology Co. Ltd.Shanghai 201100China Lianyungang Xugou Primary school Lian-yungang 222042China Global Flyway Network PO Box 3089BroomeWA 6725Australia Hong Kong Waterbirds Ringing Group Mai Po Nature ReserveHong KongChina 1261 Dovedale Road RD 2 WakefieldNelson 7096New Zealand Hong Kong Bird Watching society 7CV Ga Building532 Castle Peak RoadLai Chi KokKowloonHong KongChina school of Environmental science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Background:Despite an increasing number of surveys and a growing interest in birdwatching,the population and distribution of Asian Dowitcher(Limnodromus semipalmatus),a species endemic to the East Asian-Australasian and Central Asian Flyways,remains poorly understood,and published information about the species is largely *** boreal spring 2019,over 22,432 Asian Dowitchers were recorded in a coastal wetland at Lianyungang,Jiangsu Prov-ince,China,constituting 97.5%of its estimated global ***:In 2019 and 2020,we conducted field surveys at Lianyungang to determine the numbers of Asian Dow-itchers using the area during both southward and northward *** also assessed the distribution and abun-dance of Asian Dowitchers elsewhere along the China coast by searching literature and consulting expert ***:The coastal wetlands of Lianyungang are the most important stopover site for Asian Dowitchers during both northward and southward migrations;they supported over 90%of the estimated global population during north-ward migration in two consecutive years(May 2019 and 2020).This area also supported at least 15.83%and 28.42%(or 30.74%and 53.51%using modelled estimates)of the global population during southward migration in 2019 and 2020 *** wetlands in the west and north of Bohai Bay also have been important stopover sites for the species since the *** comprehensive,long-term monitoring data are lacking,available evidence sug-gests that the population of the species may have ***:The high concentration of Asian Dowitchers at Lianyungang during migration means the species is highly susceptible to human disturbances and natural stochastic *** coastal wetlands of Lianyungang should be protected and potentially qualify for inclusion in China’s forthcoming nomination for World Heritage listing of Migratory Bird sanctuaries along the Coast of Yellow sea-Bohai Gulf of China(Phase II)in ***

关键词： Lianyungang Limnodromus semipalmatus shorebird stopover ecology Yellow sea World Heritage

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Improved DHOA-Fuzzy Based Load scheduling in IoT Cloud Environment

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Computers, Materials & Continua 2022年第5期71卷 4101-4114页

作者： R.Joshua samuel Raj v.Ilango Prince Thomas v.R.Uma Fahd N.Al-Wesabi Radwa Marzouk Anwer Mustafa Hilal Department of Information science&Engineering CMR Institute of TechnologyBengaluru560037India Department of Computer Application CMR Institute of TechnologyBangalore560037India school of Computing Woldia Institute of TechnologyWoldia UniversityEthiopia Department of Commerce School of CommerceFinance and AccountancyChrist UniversityBangalore560029India Department of Computer science College of Science&Art at MahayilKing Khalid UniversitySaudi Arabia Faculty of Computer and IT Sana’a UniversityYemen Department of Information systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversitySaudi Arabia Department of Computer and self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlkharjSaudi Arabia

Internet of things (IoT) has been significantly raised owing to thedevelopment of broadband access network, machine learning (ML), big dataanalytics (BDA), cloud computing (CC), and so on. The development of IoTtechnologies has resulted in a massive quantity of data due to the existenceof several people linking through distinct physical components, indicatingthe status of the CC environment. In the IoT, load scheduling is realistictechnique in distinct data center to guarantee the network suitability by fallingthe computer hardware and software catastrophe and with right utilize ofresource. The ideal load balancer improves many factors of Quality of service(Qos) like resource performance, scalability, response time, error tolerance,and efficiency. The scholar is assumed as load scheduling a vital problem inIoT environment. There are many techniques accessible to load scheduling inIoT environments. With this motivation, this paper presents an improved deerhunting optimization algorithm with Type II fuzzy logic (IDHOA-T2F) modelfor load scheduling in IoT environment. The goal of the IDHOA-T2F is todiminish the energy utilization of integrated circuit of IoT node and enhancethe load scheduling in IoT environments. The IDHOA technique is derivedby integrating the concepts of Nelder Mead (NM) with the DHOA. Theproposed model also synthesized the T2L based on fuzzy logic (FL) systemsto counterbalance the load distribution. The proposed model finds usefulto improve the efficiency of IoT system. For validating the enhanced loadscheduling performance of the IDHOA-T2F technique, a series of simulationstake place to highlight the improved performance. The experimental outcomesdemonstrate the capable outcome of the IDHOA-T2F technique over therecent techniques.

关键词： Load scheduling internet of things cloud computing metaheuristics fuzzy logic

IsOLATION PURIFICATION AND PRELIMINARY CHARACTERIZATION OF A PROTEIN sPECIFIC FOR WHEAT PLANTs·NONINFECTED EY PsEUDOCERCOsPORELLA HERPOTRICHOIDEs

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植物病理学报 1993年第1期 37-42页

作者： v.Lind G.Wenzel D-8059 Grunbach Germany Institute for Resistance Genetics

A wide range of plants respond to pathogen attack with production ofpathogenesis-related proteins This paper describes another kind of proteins-healthy specific proteins,which only appear in healthy wheat plants,whenplants are infected by ***,they disappear One of this kind ofproteins,Pc2,was purified by DEAE-cellulose ion exchange,sephadex G-100

关键词： IsOLATION PURIFICATION AND PRELIMINARY CHARACTERIZATION OF A PROTEIN sPECIFIC FOR WHEAT PLANTs NONINFECTED EY PsEUDOCERCOsPORELLA HERPOTRICHOIDEs