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A Model of the Sea-Land transition of the Mean Wind Profile in the tropical Cyclone Boundary Layer Considering Climate Changes

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International Journal of Disaster Risk Science 2023年第3期14卷 413-427页

作者： Jiayao Wang tim K.t.tse Sunwei Li Jimmy ChFung Department of civil and environmental engineering The Hong Kong University of Science and TechnologyHongKong999077China Shenzhen International Graduate school Tsinghua UniversityShenzhen518055China Department of Mathematics The Hong Kong University of Science and TechnologyHongKong 999077China

the tropical cyclone boundary layer(tCBL)connecting the underlying terrain and the upper atmosphere plays a crucial role in the overall dynamics of a tropical cyclone *** tropical cyclones approach the coastline,the wind field inside the tCBL makes a sea-land transition to impact both onshore and offshore *** better understanding of the wind field inside the tCBL in the sea-land transition zone is of great *** this end,a semiempirical model that integrates the sea-land transition model from the engineering Sciences Data Unit(ESDU),huang's refined tCBL wind field model,and the climate change scenarios from the Coupled Model Intercomparison Project Phase 6(CMIP6)is used to investigate the influence of climate changes on the sea-land transition of the tCBL wind flow in hong *** specifically,such a semiempirical method is employed in a series of Monte-Carlo simulations to predict the wind profiles inside the tCBL across the coastline of hong Kong under the impact of future climate *** wind profiles calculated based on the Monte-Carlo simulation results reveal that,under the influences of the most severe climate change scenario,slightly higher and significantly lower wind speeds are found at altitudes above and below 400 m,respectively,compared to the wind speeds recommended in the hong Kong Wind Code of *** findings imply that the wind profile model currently adopted by the hong Kong authorities in assessing the safety of low-to high-rise buildings may be unnecessarily over-conservative under the influence of climate *** the other hand,the coded wind loads on super-tall buildings slightly underestimate the typhoon impacts under the severe climate change conditions anticipated for coastal southern China.

关键词： Climate change hong Kong Sea-land transition tropical cyclone boundary layer Wind speed profile

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交通行业预制构件商品化管理体系研究

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工程建设与设计 2024年第15期 212-215页

作者：裘松立申洛岑金之昂施啟严布占宇宁波交通工程建设集团有限公司浙江宁波315012 宁波大学土木工程与地理环境学院浙江宁波315211

随着交通行业工业化的发展,为适应从生产许可证制度向产品认证制度的过渡,优化预制厂建设及生产管理,论文结合区域行业发展的实际经验提出交通行业预制构件商品化管理体系,以及交通行业预制构件商品化产品建议目录,编制了交通行业工业... 详细信息

随着交通行业工业化的发展,为适应从生产许可证制度向产品认证制度的过渡,优化预制厂建设及生产管理,论文结合区域行业发展的实际经验提出交通行业预制构件商品化管理体系,以及交通行业预制构件商品化产品建议目录,编制了交通行业工业化制造商品化运营的解决方案,制定了工业化生产后张法预应力混凝土t梁产品认证的实施细则,编写了t梁预制生产、施工与质量验收技术导则。

关键词：工业化预制部品产品认证质量检验商品化管理

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Biological methane production coupled with sulfur oxidation in a microbial electrosynthesis system without organic substrates

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Journal of environmental Sciences 2022年第6期34卷 68-78页

作者： ha t.t.Dinh hiromi Kambara Shuji Matsushita Yoshiteru Aoi tomonori Kindaichi Noriatsu Ozaki Akiyoshi Ohashi Department of civil and environmental engineering Graduate School of Advanced Science and EngineeringHiroshima University1-4-1KagamiyamaHigashihiroshimaHiroshima 739-8527Japan Faculty of Environment Ho Chi Minh City University of Natural Resources and Environment236 Le Van Sy1 WardTan Binh DistrictHo Chi Minh CityViet Nam Agricultural technology Research Center Hiroshima Prefectural Technology Research Institute6869HaraHachihonmatsuHigashihiroshimaHiroshima 739-0151Japan Program of Biotechnology Graduate School of Integrated Sciences for LifeHiroshima University1-3-1KagamiyamaHigashihiroshimaHiroshima 739-8530Japan

Methane is produced in a microbial electrosynthesis system(MES) without organic substrates. however, a relatively high applied voltage is required for the bioelectrical *** this study, we demonstrated that electrotrophic methane production at the biocathode was achieved even at a very low voltage of 0.1 V in an MES, in which abiotic hS-oxidized to SO_(4)^(2-) at the anodic carbon-cloth surface coated with platinum powder. In addition, microbial community analysis revealed the most probable pathway for methane production from electrons. First, electrotrophic h_(2) was produced by syntrophic bacteria, such as Syntrophorhabdus, Syntrophobacter, Syntrophus, Leptolinea, and Aminicenantales, with the direct acceptance of electrons at the biocathode. Subsequently, most of the produced h_(2) was converted to acetate by homoacetogens, such as Clostridium and Spirochaeta 2. In conclusion,the majority of the methane was indirectly produced by a large population of acetoclastic methanogens, namely Methanosaeta, via acetate. Further, hydrogenotrophic methanogens,including Methanobacterium and Methanolinea, produced methane via h_(2).

关键词： Bioelectricity homoacetogens Methane production Microbial electrosynthesis system Sulfur oxidation

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New microbial electrosynthesis system for methane production from carbon dioxide coupled with oxidation of sulfide to sulfate

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Journal of environmental Sciences 2023年第3期125卷 786-797页

作者： hiromi Kambara ha t.t.Dinh Shuji Matsushita Yoshiteru Aoi tomonori Kindaichi Noriatsu Ozaki Akiyoshi Ohashi Department of civil and environmental engineering Graduate School of EngineeringHiroshima University1–4–1KagamiyamaHigashi-HiroshimaHiroshima 739–8527Japan Faculty of Environment Ho Chi Minh City University of Natural Resources and Environment236 Le Van Sy1 WardTan Binh DistrictHo Chi Minh CityVietnam Agricultural technology Research Center Hiroshima Prefectural Technology Research Institute6869HaraHachihonmatsuHigashihiroshimaHiroshima 739–0151Japan Program of Biotechnology Graduate School of Integrated Sciences for LifeHiroshima University1–3–1KagamiyamaHigashi-HiroshimaHiroshima 739–8530Japan Department of civil and environmental engineering Graduate School of Advanced Science and EngineeringHiroshima University1–4–1KagamiyamaHigashi-HiroshimaHiroshima 739–8527Japan

Microbial electrosynthesis system (MES) is a promising method that can use carbon dioxide,which is a greenhouse gas,to produce methane which acts as an energy source,without using organic ***,this bioelectrical reduction reaction can proceed at a certain high applied voltage when coupled with water oxidation in the anode coated with metallic *** coupled with the oxidation of hS–to SO_(4)^(2-),methane production is thermodynamically more feasible,thus implying its production at a considerably lower applied *** this study,we demonstrated the possibility of electrotrophic methane production coupled with hS–oxidation in a cost-effective bioanode chamber in the MES without organic substrates at a low applied voltage of 0.2 *** addition,microbial community analyses of biomass enriched in the bioanode and biocathode were used to reveal the most probable pathway for methane production from hS–*** the bioanode,electroautotrophic SO_(4)^(2-)production accompanied with electron donation to the electrode is performed mainly by the following two steps:first,incomplete sulfide oxidation to sulfur cycle intermediates (SCI) is performed;then the produced SCI are disproportionated to hS^(–)and SO_(4)^(2-).In the biocathode,methane is produced mainly via h_(2)and acetate by electronaccepting syntrophic bacteria,homoacetogens,and acetoclastic ***,a new ecofriendly MES with biological h_(2)S removal is established.

关键词： Microbial electrosynthesis system Low applied voltage Organic substrates Methane production Sulfur oxidation

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Number of COVID-19 cases required in a population to detect SARS-CoV-2 RNA in wastewater in the province of Alberta, canada:Sensitivity assessment

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Journal of environmental Sciences 2023年第3期125卷 843-850页

作者： Qiaozhi Li Bonita E.Lee tiejun Gao Yuanyuan qiu Erik Ellehoj Jiaao Yu Mathew Diggle Graham tipples Rasha Maal-Bared Deena hinshaw Christopher Sikora Nicholas J.Ashbolt James talbot Steve E.hrudey Xiaoli Pang school of Public health University of AlbertaEdmontonAB T6G 2R3Canada Department of Pediatrics University of AlbertaEdmontonAB T6G 1C9Canada Department of Laboratory Medicine and Pathology University of AlbertaEdmontonAB T6G 2B7Canada University of Alberta Central Receiving EdmontonAlbertaT6G 2R3Canada Provincial Laboratory for Public health EdmontonAlbertaCanada EPCOR EdmontonAB T5H 0E8Canada Department of Medicine University of AlbertaEdmontonAB T6G 2G3Canada Faculty of Science and engineering Southern Cross UniversityEast Lismore NSW 2480Australia

With a unique and large size of testing results of 1,842 samples collected from 12 wastewater treatment plants (WWtP) for 14 months through from low to high prevalence of COVID-19,the sensitivity of Rt-qPCR detection of SARS-CoV-2 RNA in wastewater that correspond to the communities was computed by using Probit *** study determined the number of new COVID-19 cases per 100,000 population required to detect SARS-CoV-2RNA in wastewater at defined probabilities and provided an evidence-based framework of wastewater-based epidemiology surveillance (WBE).Input data were positive and negative test results of SARS-CoV-2 RNA in wastewater samples and the corresponding new COVID-19 case rates per 100,000 population served by each *** analyses determined that Rt-qPCR-based SARS-CoV-2 RNA detection threshold at 50%,80%and 99%probability required a median of 8 (range:4-19),18 (9-43),and 38 (17-97) of new COVID-19 cases/100,000,***,the positive detection rate at 50%,80%and 99%probability were 0.01%,0.02%,and 0.04%averagely for new cases in the *** study improves understanding of the performance of WBE SARS-CoV-2 RNA detection using the large datasets and prolonged study *** COVID-19 burden at a community level that would result in a positive detection of SARS-CoV-2 in wastewater is critical to support WBE application as a supplementary warning/monitoring system for COVID-19 prevention and control.

关键词： SARS-CoV-2 COVID-19 cases Wastewater Probit analysis Probability Detection sensitivity

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Comparison of approaches to quantify SARS-CoV-2 in wastewater using Rt-qPCR: Results and implications from a collaborative inter-laboratory study in canada

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Journal of environmental Sciences 2021年第9期33卷 218-229页

作者： Alex h.S.Chik Melissa B.Glier Mark Servos Chand S.Mangat Xiao-Li Pang Yuanyuan qiu Patrick M.D’Aoust Jean-Baptiste Burnet Robert Delatolla Sarah Dorner qiudi Geng John P.Giesy Jr Robert Mike McKay Michael R.Mulvey Natalie Prystajecky Nivetha Srikanthan Yuwei Xie Bernadette Conant Steve E.hrudey Canadian SARS-CoV-Inter-Laboratory Consortium Consultant to Canadian Water Network Inc. KitchenerCanada Presently at Ontario Clean Water Agency MississaugaCanada environmental Microbiology BC Centre for Disease ControlVancouverCanada Department of Biology University of WaterlooWaterlooCanada National Microbiology Laboratory Public Health Agency of CanadaWinnipegCanada Public health Laboratory Alberta Precision LaboratoryEdmontonCanada Department of Laboratory Medicine&Pathology Faculty of Medicine and DentistryUniversity of AlbertaEdmontonAB T6G 2G3Canada Faculty of engineering University of OttawaOttawaCanada Département des génies civil géologique et des minesPolytechnique MontréalMontréalCanada Veterinary Biomedical Sciences University of SaskatchewanSaskatoonCanada toxicology Centre University of SaskatchewanSaskatoonCanada Great Lakes Institute for environmental Research University of WindsorWindsorCanada Department of Medical Microbiology University of ManitobaWinnipegCanada Department of Pathology and Laboratory Medicine University of British ColumbiaVancouverCanada Canadian Water Network Inc. WaterlooCanada Group author details below

Detection of SARS-CoV-2 RNA in wastewater is a promising tool for informing public health decisions during the COVID-19 ***,approaches for its analysis by use of reverse transcription quantitative polymerase chain reaction(Rt-q PCR)are still far from standardized *** characterize inter-and intra-laboratory variability among results when using various methods deployed across canada,aliquots from a real wastewater sample were spiked with surrogates of SARS-CoV-2(gamma-radiation inactivated SARS-CoV-2 and human coronavirus strain 229E[hCoV-229E])at low and high levels then provided"blind"to eight *** estimates reported by individual laboratories were consistently within a 1.0-log_(10) range for aliquots of the same spiked *** laboratories distinguished between low-and high-spikes for both *** expected,greater variability was observed in the results amongst laboratories than within individual laboratories,but SARS-CoV-2 RNA concentration estimates for each spiked condition remained mostly within 1.0-log_(10) *** no-spike wastewater aliquots provided yielded non-detects or trace levels(to methods that included or focused on the solids fraction of the wastewater matrix and might represent in-situ SARS-CoV-2 to the wastewater ***-229E RNA was not detected in the no-spike ***,all methods yielded comparable results at the conditions *** behavior of SARS-CoV-2 and spiked surrogates in wastewater should be considered to evaluate method effectiveness.A consistent method and laboratory to explore wastewater SARS-CoV-2 temporal trends for a given system,with appropriate quality control protocols and documented in adequate detail should succeed.

关键词： COVID-19 Wastewater surveillance Public health Quality assurance Quality control

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Antagonism between ambient ozone increase and urbanization-oriented population migration on Chinese cardiopulmonary mortality

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the Innovation 2023年第6期4卷 48-58页

作者： haitong Zhe Sun Junchao Zhao Xiang Liu Minghao qiu huizhong Shen Serge Guillas Chiara Giorio Zosia Staniaszek Pei Yu Michelle W.L.Wan Man Mei Chim Kim Robin van Daalen Yilin Li Zhenze Liu Mingtao Xia Shengxian Ke haifan Zhao haikun Wang Kebin he huan Liu Yuming Guo Alexander t.Archibald lYusuf hamied Department of Chemistry University of CambridgeCambridge CB21EWUK Department of Earth Sciences University of CambridgeCambridge CB23EQUK Department of environmental health and engineering Johns Hopkins Bloomberg School of Public HealthBaltimoreMD 21205USA State Key Joint Laboratory of ESPC State Environmental Protection Key Laboratory of Sources and Control of Air Pollution ComplexSchool of EnvironmentTsinghua UniversityBejing 100084China school of Atmospheric Sciences Nanjing UniversityNanjing 210023China Department of Earth System Science Stanford UniversityStanfordCA 94305USA school of environmental Science and engineering Southern University of Science and TechnologyShenzhen 518p55China Department of Statistical Science University College LondonLondon WC1E 6BTUK the Alan turing Institute London NW12DBUK school of Public heath and Preventive Medicine Monash UniversityMelboumeVIC 3004Australia British heart Foundation Cardiovascular Epidemiology Unit Department of Public Health and Primary CareUniversity of CambridgeCambridge CB18RNUK heart and Lung Research Institute University of CambridgeCambridge CB20BDUK Baroelona Supercomputing Center Department of Earth Sciences08034 BarcelonaSpain school of environmental Science and engineering Nanjing University of Information Science and TechnologyNanjing 210044China Department of Mathematics University of CaliformiaLos AngelesLos AngelesCA 90095USA State Key Laboratory of New Ceramics and Fine Processing KeyLaboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of engineering University of CambridgeCambridge CB21PZUK National Centre for Atmospheric Science Cambridge CB21EWUK

Everincreasing ambient ozone(O3)pollution in China has been exacerbating cardiopulmonary premature ***,the urban-rural exposure inequity has seldom been ***,we assess populationcale 03 exposure and mortality burdens between 1990 and 2019 based on integrated pollution tracking and epidemiological *** find Chinese population have been suffering from climbing 03 exposure by 4.3±2.8 ppb per decade as a result of rapid urbanization and growing prosperity of socioeconomic *** residents are broadly exposed to 9.8±4.1 ppb higher ambient O3 than the adjacent urban citizens,and thus urbaniza-tion-oriented migration compromises the exposure-associated mortality on total *** excess premature deaths attributable to longterm 03 exposure,373,500(95%uncertainty interval[U]:240,600-510,900)in 2019,is underestimated in previous studies due to ignorance of cardiovascular *** 03 pollution policy should focus more on rural population who are facing an aggravating threat of mortality risks to ameliorate environmental health injustice.

关键词： ambient urban urbanization

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燃煤锅炉温度场与高温腐蚀气氛场同步在线检测装置开发及应用

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电力科技与环保 2024年第2期40卷 116-124页

作者：王建荣程银雪李龙郭古青田亚莉孙小聪周月婷李传亮邱选兵山西省精密测量与在线检测装备工程研究中心山西省光场调控与融合应用技术创新中心太原科技大学应用科学学院山西太原030024

燃煤锅炉主燃区燃烧场的经济性、安全性和环保性对于智慧电厂建设具有重要意义。其中,水冷壁近壁面高温腐蚀h_(2)S和CO气体浓度的实时在线监测尤为重要。为实现燃煤锅炉主燃区温度场和高温腐蚀气氛场的同步测量,基于红外热成像原理,采用... 详细信息

燃煤锅炉主燃区燃烧场的经济性、安全性和环保性对于智慧电厂建设具有重要意义。其中,水冷壁近壁面高温腐蚀h_(2)S和CO气体浓度的实时在线监测尤为重要。为实现燃煤锅炉主燃区温度场和高温腐蚀气氛场的同步测量,基于红外热成像原理,采用Optris-PI1M小型红外热成像仪,基于LabVIEW温度实时采集应用软件,在炉膛的观察口对主燃区温度场进行连续监测。以低成本1.5μm附近的通信波段激光器作为测量高温腐蚀气体h_(2)S和CO的激光光源,并结合波长调制光谱技术和频分复用技术,以实现h_(2)S和CO气体浓度的同步检测。线性度实验表明,其线性拟合相关系数为0.9995。将研制的同步检测仪器对某300 MW四角切圆燃煤锅炉的主燃区的温度场和气氛场进行了现场应用试验。现场测试结果表明,锅炉主燃区温度主要分布范围在1300~1400℃,最高温度达到了1500℃;同时得到了锅炉主燃区的h_(2)S和CO浓度分布,h_(2)S浓度在12~125 mg/m^(3)的范围内波动,而CO浓度主要分布在10%~20%之间,最高可达22%;炉内h_(2)S和CO的浓度呈正相关,氧气浓度保持在1%以下,由于厌氧燃烧会导致两种气体的含量增加,从而造成对水冷壁近壁面的高温腐蚀。

关键词：燃煤锅炉高温腐蚀红外热成像激光吸收光谱在线监测

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开挖卸荷-射孔压裂下高应力硬岩的应力分布与裂纹扩展

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中国有色金属学报 2023年第3期33卷 952-968页

作者：陈正红陈秋南李夕兵吴秋红黄小城湖南科技大学土木工程学院湘潭411201 中南大学资源与安全工程学院长沙410083 湖南科技大学资源环境与安全工程学院湘潭411201

本文以深部硬岩矿山中射孔压裂辅助机械开挖为背景,推导了开挖卸荷-射孔压裂下应力分布理论模型,并基于离散元法建立了开挖卸荷-射孔压裂的流固耦合数值模型。通过与理论模型对比,验证了数值模型的准确性,并进一步研究了开挖卸荷下单射... 详细信息

本文以深部硬岩矿山中射孔压裂辅助机械开挖为背景,推导了开挖卸荷-射孔压裂下应力分布理论模型,并基于离散元法建立了开挖卸荷-射孔压裂的流固耦合数值模型。通过与理论模型对比,验证了数值模型的准确性,并进一步研究了开挖卸荷下单射孔位置x_(0)、注液压力p_(t)、射孔长度h_(f)以及双射孔压裂对裂纹扩展规律的影响。结果表明:开挖卸荷-单射孔压裂下不同射孔压裂参数x_(0)、p_(t)、h_(f)对应力分布规律的影响不同。随x_(0)、p_(t)、h_(f)的增大,开挖卸荷-单射孔压裂下裂纹数量均有所增多,但裂纹扩展规律存在明显差异。在开挖卸荷-双射孔压裂下,压裂效果优于单射孔压裂,随hf的增大,裂纹数量增多,双射孔中间区域裂纹贯通。

关键词：开挖卸荷射孔压裂应力分布裂纹扩展

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Influence of towing speed on effectiveness of rolling dynamic compaction

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Journal of Rock Mechanics and Geotechnical engineering 2020年第1期12卷 126-134页

作者： Brendan t.Scott Mark B.Jaksa Peter W.Mitchell school of civil Environmental and Mining EngineeringThe University of AdelaideSouth Australia5005Australia Aurecon AdelaideSouth Australia5000Australia

the influence of towing speed on the effectiveness of the 4-sided impact roller using earth pressure cells(EPCs)is *** field trials were undertaken;the first trial used three EPCs placed at varying depths between 0.5 m and 1.5 m with towing speeds of 9-12 km/*** second used three EPCs placed at a uniform depth of 0.8 m,with towing speeds of 5-15 km/*** findings from the two trials confirmed that towing speed influences the pressure imparted to the ground and hence compactive *** paper proposes that the energy imparted to the ground is best described in terms of work done,which is the sum of the change in both potential and kinetic *** practice of using either kinetic energy or gravitational potential energy should be avoided as neither can accurately quantify rolling dynamic compaction(RDC)when towing speed is varied.

关键词： Rolling dynamic compaction(RDC) Optimum towing speed Ground improvement

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