检索结果-南通市图书馆

Journal of Environmental Protection 2024年第8期15卷 874-886页

作者： robert France Brandon Heung Department of Plant Food and Environmental Science Dalhousie University Nova Scotia Canada

Despite cities being recognized as being potential sources of microplastic pollution to the wider environment, most surveys of COVID-19 plastic-based litter have been undertaken through linear transects of marine beaches. For the far fewer number of studies conducted on inland and urban locations, the site-specific focus has primarily been surveys along the length of streets. The present study is the first to specifically assess the standing stock (i.e., moment-in-time) of littered face masks for the entire surface area of urban parking lots. The density of face masks in 50 parking lots in a Canadian coastal town (0.00054 m2 ± 0.00051 m2) was found to be significantly greater than the background level of littering of town streets. Face mask density was significantly related to visitation “usage” of parking lots as gauged by the areal size of the lots and of their onsite buildings, as well as the number of vehicles present. Neither parking lot typology nor estimates of inferred export (various measures of wind exposure) and entrapment (various metrics of obstruction) of face masks had a significant influence on the extent of whole-lot littering. In consequence, modelling of the potential input of mask-derived microplastics to the marine environment from coastal communities can use the areal density of face masks found here in association with the total surface area of lots for individual municipalities as determined through GIS analysis.

关键词： COVID Face Masks Parking Lot Litter Prediction Areal Abundance

The First Global Map of Atmospheric Ammonia(NH_(3)) as Observed by the HIRAS/FY-3D Satellite

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2024年第3期41卷 379-390页

作者： Minqiang ZHOU Zhili DENG Charles robert Xingying ZHANG Lu ZHANG Yapeng WANG Chengli QI Pucai WANG Martine De MAZIÈRE Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Royal Belgian Institute for Space Aeronomy(BIRA-IASB) Brussels 1180Belgium National Satellite Meteorology Center China Meteorological AdministrationBeijing 100081China Department of Science&Technology and Climate Change China Meteorological AdministrationBeijing 100081China University of Chinese Academy of Sciences Beijing 100049China

Atmospheric ammonia(NH_(3)) is a chemically active trace gas that plays an important role in the atmospheric environment and climate change. Satellite remote sensing is a powerful technique to monitor NH_(3) concentration based on the absorption lines of NH_(3) in the thermal infrared region. In this study, we establish a retrieval algorithm to derive the NH_(3)column from the Hyperspectral Infrared Atmospheric Sounder(HIRAS) onboard the Chinese Feng Yun(FY)-3D satellite and present the first atmospheric NH_(3) column global map observed by the HIRAS instrument. The HIRAS observations can well capture NH_(3) hotspots around the world, e.g., India, West Africa, and East China, where large NH_(3) emissions exist. The HIRAS NH_(3) columns are also compared to the space-based Infrared Atmospheric Sounding Interferometer(IASI)measurements, and we find that the two instruments observe a consistent NH_(3) global distribution, with correlation coefficient(R) values of 0.28–0.73. Finally, some remaining issues about the HIRAS NH_(3) retrieval are discussed.

关键词： ammonia HIRAS/FY-3D satellite thermal-infrared observation remote sensing optimal estimation method

Decoding RoPax Ship Capsizes and Development of an ISO Ship Safety Standard

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Engineering（科研） 2024年第9期16卷 225-236页

作者： Soonhung Han robert Latorre KAIST Daejeon South Korea Department of Naval Architecture University of New Orleans New Orleans USA

Marine accidents often result in significant losses of human life, environmental damage, and property destruction. Additionally, ships and offshore plants are large-scale and complex systems, making safety assessments challenging. However, the advent of onboard electronic systems has made it possible to monitor and respond more effectively. These new technologies can enhance safety levels while reducing the workload on crews. In this paper, authors analyze recent accidents involving ships with high structures above the water, such as car carriers or RoPax vessels, and propose preventive safety indicators to help prevent similar accidents from recurring.

关键词： Ship Accident Capsize RoPax Ship Profile Height Regulatory Body ISO Standards

A dicistrovirus increases pupal mortality in Spodoptera frugiperda by suppressing protease activity and inhibiting larval diet consumption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第8期23卷 2723-2734页

作者： Meixue Sun Tong Li Yingjie Liu Kenneth Wilson Xingyu Chen robert I.Graham Xianming Yang Guangwei Ren Pengjun Xu Key Laboratory of Tobacco Pest Monitoring&Integrated Management Tobacco Research InstituteChinese Academy of Agricultural SciencesQingdao 266101China Institute of Plant Protection Henan Academy of Agricultural SciencesZhengzhou 450000China Staff Development Institute of China National Tobacco Corporation Zhengzhou 450000China Lancaster Environment Centre Lancaster UniversityLancaster LA14YWUK Department of Rural Land Use Scotland’s Rural CollegeCraibstone CampusAberdeen AB01ABUK State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China

Understanding interactions between viruses and their hosts is conducive to enabling better application of viruses as biocontrol *** viruses carried by parasitic wasps enhance the parasitic efficiency of wasp-larvae by protecting them against the immune system of their Lepidopteran ***,the relationship between prey pests and viruses found in predatory natural enemies remains ***,we report the interaction between Arma chinensis virus-1(AcV-1),originally isolated from a predatory natural enemy,Arma chinensis(Hemiptera:Pentatomidae),and one of its prey species,Spodoptera frugiperda(Lepidoptera:Noctuidae).The results showed that the AcV-1 virus appeared harmful to the novel host *** by inhibiting larval diet consumption and increasing pupal ***,sequencing data indicated that the virus altered the gene expression profiles of *** analysis showed that the proteasome and phagosome pathways related to protein degradation and immune response were significantly *** the expression levels of digestive enzyme genes did not change significantly,the total protease activity of AcV-1 virus-positive individuals was significantly decreased,suggesting that the virus inhibited diet consumption of *** via the down-regulation of digestive enzyme *** results indicate that a virus initially isolated in a predatory natural enemy can decrease the fitness of its prey *** virus was found to impact the host proteasome and phagosome pathways related to protein degradation and immunity,providing a potential mechanism to enhance controlling efficiency.

关键词： Arma chinensis virus-1 diet consumption fitness transcriptome protease activity

Mechanocatalysis of CO to CO_(2)on TiO_(2)surface controlled at atomic scale

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第7期17卷 5826-5834页

作者： Yuuki Adachi robert Turanský Ján Brndiar Kamil Tokár Qiang Zhu Huan Fei Wen Yasuhiro Sugawara IvanŠtich Yan Jun Li Department of Applied Physics Osaka University2-1 YamadaokaSuitaOsaka 565-0871Japan Institute of Physics Slovak Academy of SciencesBratislava 84511Slovakia Institute of Informatics Slovak Academy of SciencesBratislava 84507Slovakia Faculty of Natural Sciences University of Ss.Cyril and MethodiusTrnava 91701Slovakia Key Laboratory of Instrumentation Science and Dynamic Measurement School of Instrument and ElectronicsNorth University of ChinaTaiyuan 030051China

The common ways to activate a chemical reaction are by heat,electric current,or ***,mechanochemistry,where the chemical reaction is activated by applied mechanical force,is less common and only poorly understood at the atomic *** we report a tip-induced activation of chemical reaction of carbon monoxide to dioxide on oxidized rutile TiO_(2)(110)*** activation is studied by atomic force microscopy,Kelvin probe force microscopy under ultrahigh-vacuum and liquid nitrogen temperature conditions,and density functional theory(DFT)*** reaction is inferred from hysteretic behavior of frequency shift signal further supported by vector force mapping of vertical and lateral forces needed to trigger the chemical reaction with torque motion of carbon monoxide towards an oxygen *** reaction is found to proceed stochastically at very small tip-sample ***,the local contact potential difference reveals the atomic-scale charge redistribution in the reactants required to unlock the *** results open up new insights into the mechanochemistry on metal oxide surfaces at the atomic scale.

关键词： atomic resolution mechanochemistry atomic force microscopy Kelvin probe force microscopy density functional theory(DFT)simulation CO oxidation catalysis rutile TiO_(2)surface

A novel responsive stabilizing Janus nanosilica as a nanoplugging agent in water-based drilling fluids for exploiting hostile shale environments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Science 2024年第2期21卷 1190-1210页

作者： Alain Pierre Tchameni Lv-Yan Zhuo lesly Dasilva Wandji Djouonkep robert Dery Nagre Lu-Xin Chen Lin Zhao Chao Ma Bin-Qiang Xie College of Petroleum Engineering Yangtze UniversityWuhan430100HubeiChina Key Laboratory of Drilling and Production Engineering for Oil and Gas HubeiChina Lost Circulation Control Laboratory National Engineering Laboratory for Petroleum Drilling EngineeringYangtze UniversityWuhan430100HubeiChina College of Petroleum Engineering Shandong Institute of Petroleum and Chemical TechnologyDongying257061ShandongChina Petroleum Engineer Research Institute of Petrochina Dagang Oilfield Tianjin300280China Department of Chemical Engineering Kumasi Technical UniversityP.O.Box 854KumasiGhana

Thermo-responsive nanocomposites have recently emerged as potential nanoplugging agents for shale stabilization in high-temperature water-based drilling fluids(WBDFs). However, their inhibitory properties have not been very effective in high-temperature drilling operations. Thermo-responsive Janus nanocomposites are expected to strongly interact with clay particles from the inward hemisphere of nanomaterials, which drive the establishment of a tighter hydrophobic membrane over the shale surface at the outward hemisphere under geothermal conditions for shale stabilization. This work combines the synergistic benefits of thermo-responsive and zwitterionic nanomaterials to synchronously enhance the chemical inhibitions and plugging performances in shale under harsh conditions. A novel thermoresponsive Janus nanosilica(TRJS) exhibiting zwitterionic character was synthesized, characterized,and assessed as shale stabilizer for WBDFs at high temperatures. Compared to pristine nanosilica(Si NP)and symmetrical thermo-responsive nanosilica(TRS), TRJS exhibited anti-polyelectrolyte behaviour, in which electrolyte ions screened the electrostatic attraction between the charged particles, potentially stabilizing nanomaterial in hostile shaly environments(i.e., up to saturated brine or API brine). Macroscopically, TRJS exhibited higher chemical inhibition than Si NP and TRS in brine, prompting a better capability to control pressure penetration. TRJS adsorbed onto the clay surface via chemisorption and hydrogen bonding, and the interactions became substantial in brine, according to the results of electrophoretic mobility, surface wettability, and X-ray diffraction. Thus, contributing to the firm trapping of TRJS into the nanopore structure of the shale, triggering the formation of a tight hydrophobic membrane over the shale surface from the outward hemisphere. The addition of TRJS into WBDF had no deleterious effect on fluid properties after hot-treatment at 190℃, implying that TRJ

关键词： Janus nanosilica Thermo-responsive copolymer Anti-polyelectrolyte effect Shale stabilizer Inhibition Plugging Drilling fluid

Gouty destruction of a patellar tendon reconstruction and novel revision reconstruction technique: A case report

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Orthopedics 2024年第7期15卷 675-682页

作者： Carl C Edge Jonathan Widmeyer Omar Protzuk Maya Johnson robert O’Connell Department of Orthopaedic Surgery Division of Sports MedicineVirginia Commonwealth University Health SystemRichmondVA 23298-0153United States Division of Sports Medicine OrthowestCarroltonGA 30117United States

BACKGROUND Gout is a disease characterized by hyperuricemia,and resultant deposition of uric acid crystals in *** typically manifested as intraarticular crystals or tophi,gout can also cause pathology at *** deposition within tendinous structures put them at risk for traumatic and degenerative ***,allografts can also be at risk of rupture in the setting of severe *** present the case of a 56-year-old female with severe gouty disease who sustained a re-rupture of a patellar tendon allograft *** SUMMARY A 56-year-old female presented to clinic after feeling her left knee pop and collapse beneath her while descending *** had a history of tophaceous gout and left patellar tendon rupture with reconstruction and multiple revisions over the course of 19 *** patient presented with pain and extensor lag.A magnetic resonance image demonstrated a ruptured patellar tendon allograft reconstruction and avulsion fracture at the tibial *** patient was treated with a novel intervention of Achilles allograft with bone block in a unique configuration with a dermal allograft incorporated into the *** was made non-weight bearing in the operative extremity in extension for the first four weeks postoperatively and was then progressed to active flexion over the course of eight *** twelve weeks,she was able to fully extend her operative knee and at five months she was resuming her normal activities and *** Failed patellar tendon reconstruction due to gouty infiltration is treated with dermal allograft augmented Achilles tendon reconstruction with bone block.

关键词： Gout Patella Reconstruction Dermal allograft Revision Case report

Increases in the incremental exercise mean response time across the steady state domain:Implications for exercise testing&prescription

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sports Medicine and Health Science 2024年第4期6卷 315-323页

作者： Bridgette G.J.O'Malley robert A.Robergs Todd A.Astorino Queensland University of Technology Faculty of Health:School of Exercise and Nutrition SciencesBrisbaneAustralia Department of Kinesiology CSU-San MarcosSan MarcosCAUSA

We hypothesized that slowed oxygen uptake(VO_(2))kinetics for exercise transitions to higher power outputs(PO)within the steady state(SS)domain would increase the mean response time(MRT)with increasing exercise intensity during incremental *** highly trained cyclists(mean±standard deviation[SD]);age(39±6)years[yr];and VO_(2) peak=(61±9)mL/kg/min performed a maximal,ramp incremental cycling test and on separate days,four 6-min bouts of cycling at 30%,45%,65%&75% of their incremental peak PO(Wpeak).SS trial data were used to calculate the MRT and verified by mono-exponential and linear curve *** the ramp protocol attained the value from SS,the PO,in Watts(W),was converted to time(min)based on the ramp function W to quantify the incremental MRT(iMRT).Slope analyses for the VO_(2) responses of the SS versus incremental exercise data below the gas exchange threshold(GET)revealed a significant difference(p=0.003;[0.437±0.08]vs.[0.382±0.05]L·min^(-1)).There was a significant difference between the 45%Wpeak steady state VO_(2)(ss VO_(2))([3.08±0.30]L·min^(-1),respectively),and 30% Wpeak ss VO_(2)(2.26±0.24)(p<0.0001;[3.61±0.80]vs.[2.20±0.39]L·min^(-1))and between the iMRT for 45% and 30% Wpeak ss VO_(2) values([50.58±36.85]s vs.[32.20±43.28]s).These data indicate there is no single iMRT,which is consistent with slowed VO_(2) kinetics and an increasing VO_(2) deficit for higher exercise intensities within the SS domain.

关键词： Mean responsetime(MRT) Incremental exercise Steady state(SS) Exercise testing Exercise prescription

Exploring the effects of coronary artery disease as a preexisting comorbidity on mortality in hospitalized septic patients:a retrospective observation study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Emergency and Critical Care Medicine 2024年第2期4卷 47-51页

作者： Anmol Multani Greg Stahl Kerry Johnson Scott Goade robert D.Arnce College of Osteopathic Medicine Kansas City UniversityJoplinMOUSA Department of Data Improvement Freeman Health SystemJoplinMOUSA Department of Mathematics Missouri Southern State UniversityJoplinMOUSA Department of Pharmacy Freeman Health SystemJoplinMOUSA

Background:Sepsis has high prevalence and mortality rate,and it is imperative to identify populations at risk of poor sepsis *** patients with preexisting chronic comorbidities are shown to have worse sepsis *** identifying comorbidities with greater influence on sepsis progression,we can direct limited resources to septic patients with comorbidities and reduce health care *** comorbidities can impact the risk of developing sepsis and having worse *** artery disease(CAD)is a common comorbidity,especially in the elderly,and a leading cause of death *** wished to investigate the influence of CAD as a comorbidity on sepsis and hypothesized that preexisting CAD would increase mortality in hospitalized septic ***:We conducted retrospective observational study using patient data from Freeman Health System in Joplin,*** analyzed patient records from Freeman Health System database from January 1,2019,to June 30,*** patients were identified using the International Classification of Diseases,Tenth Revision sepsis *** identify septic patients with preexisting CAD,we used International Classification of Diseases,Tenth Revision codes for *** compared mortality rates for septic patients with and without ***:Two-sample proportion test was conducted to test the difference in mortality between septic patients with and without preexisting *** difference in mortality for the total population was−0.016(P=0.553).In the male and female subgroups,the differences in mortality were 0.0122(P=0.739)and−0.0511(P=0.208),*** differences in mortality in patients aged 40 to 64 years and 65 years and older were−0.0077(P=0.870)and 0.0007(P=0.983),*** statistical tests failed to find significant differences when comparing septic patients with and without preexisting *** was no significant difference in the age and sex ***:Our study showed that CAD alone was n

关键词： Comorbidity Coronary artery disease Inflammation Mortality rate in sepsis prognosis Sepsis

Using Copula functions to predict climatic change impacts on floods in river source regions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Climate Change Research 2024年第3期15卷 406-418页

作者： Ting-Xing CHEN Hai-Shen LYU robert HORTON Yong-Hua ZHU Ren-Sheng CHEN Ming-Yue SUN Ming-Wen LIU Yu LIN The National Key Laboratory of Water Disaster Prevention College of Hydrology and Water ResourcesHohai UniversityNanjing 2098China College of Hydrology and Water Resources Hohai UniversityNanjing 210098China Departmentof Agronomy lowa State UniversityAmes IA5oollUSA Qilian Alpine Eology and Hydrology Research Station Northwest Instiuteof Eco-Environmentand ReourcesChinese Academy of SciencesLanzhou0000 China

Flood frequency in river source regions is significantly affected by rainfall and snowmelt as part of climatic changes.A traditional univariate flood frequency analysis cannot reflect the complexity of floods,and when used in isolation,it can only underestimate flood *** effective flood prevention and mitigation,it is essential to consider the combined effects of precipitation and *** functions can effectively quantify the joint distribution relationship between floods and their associated variables without restrictions on their distribution *** study uses copula functions to consider a multivariate probability distribution model of flood peak flow(Q)with cumulative snowmelt(CSm)and cumulative precipitation(CPr)for the Hutubi River basin located in northern Xinjiang,*** joint frequencies of rainfall and snowmelt floods are predicted using copula models based on the Coupled Model Intercomparison Project Phase 6 *** results show that Q has a significant positive correlation with 24-d CSm(r=0.559,p=0.002)and 23-d CPr(r=0.965,pecipitation trends are found to be *** increases with rising temperatures and occurs earlier than estimated,leading to an earlier flood period in the basin and more frequent snowmelt *** Q under the joint return period is larger than that during the same univariate return *** difference indicates that neglecting the interaction between precipitation and snowmelt for floods leads to an underestimation of the flood risk(with underestimations ranging from 0.3%to 22%).The underestimations decrease with an increase

关键词： Climate change Flood frequency Copula CMIP6 River source regions