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Journal of environmental engineering (Japan) 2025年第828期90卷 96-105页

作者： Shinohara, Rihoko Yamaguchi, Yohei Miyata, Masato Uchida, Hideaki Shimoda, Yoshiyuki Division of Sustainable Energy and Environmental Engineering Graduate School of Engineering Osaka University Japan National Institute for Land and Infrastructure Management Japan

This study analyzed the energy efficiency and specifications of commercial buildings newly constructed or renovated in the year 2018. Clustering of the sample data showed that 40% of the sample had relatively high performance across all specifications, with the remaining buildings having low performance in certain specifications. In addition, depending on the building usage, 22.5% to 60% of the buildings do not meet the building codes of the Building Energy Conservation Code, which has been updated in 2024. Based on the results, we discussed how design specifications would change as a result of this code revision. © 2025 Architectural institute of Japan. All rights reserved.

关键词： Office buildings

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Local scour downstream of type-A trapezoidal stepped piano key weir in sand and gravel sediments

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ISH Journal of Hydraulic engineering 2024年第4期30卷 417-429页

作者： Fathi, Amirhossein Abdi Chooplou, Chonoor Ghodsian, Masoud Faculty of Civil and Environmental Engineering Tarbiat Modares University Tehran Iran Faculty of Civil and Environmental Engineering and Research Institute of Water Engineering and Management Tarbiat Modares University Tehran Iran

This study examines the scouring effect downstream of a type-A trapezoidal stepped Piano key weir using experimental methods. The experiments were performed on weirs, both with and without steps at the outlet keys, while considering various discharge rates, tailwater depths, and bed material sizes. The study scrutinized three unique weir configurations, each with different dimensions and step counts at the outlet keys: the first, second, and third weirs had 5, 10, and 15 steps respectively. The findings indicate that the maximum scour depths in the Piano key weirs with 5, 10, and 15 steps were, on average, 17.5%, 31%, and 19% less than those in the non-stepped weir. It was also noted that an increase in discharge and a decrease in tailwater depth and bed material size led to an increase in the maximum scour depth. Moreover, an increase in the number of steps and a decrease in the size of the bed materials resulted in a reduction in sediment ridge height. The analysis suggests that the average scour index values in the 10-stepped weir were about 21% lower compared to the non-stepped weir. These insights contribute to the design and optimization of hydraulic structures to effectively mitigate scouring effects. © 2024 Indian Society for Hydraulics.

关键词： Scour

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Smoke and NO_(x)emission characteristics of in-use construction machinery base on substantial field measurement:A case study in Beijing,China

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Journal of environmental Sciences 2025年第3期149卷 386-393页

作者： Huawei Yi Yangyang Cui Lijun Zhu Yan Shen Han Li Guanghan Huang Linzhen Qu Dongdong Guo Lei Nie Yifeng Xue National Engineering Research Center of Urban Environmental Pollution Control Beijing Municipal Research Institute of Eco-Environmental ProtectionBeijing 100037China Beijing Vehicle Emission Management Affairs Centre Beijing 100176China

To understand the smoke level and NO_(x)emission characteristics of in-use construction machinery in Beijing,we selected 905 construction machines in Beijing from August 2022 to April 2023 to monitor the emission level of smoke and NO_(x).The exhaust smoke level and excessive emission situation of different machinery types were identified,and their NO_(x)emission levels were monitored according to the free acceleration *** investigated the correlation of NO_(x)and smoke emission,and proposed suggestions for controlling pollution discharge from construction machinery in the *** results show that the exhaust smoke level was 0–2.62 m^(−1),followed a log-normal distribution(μ=-1.73,δ=1.09,R^(2)=0.99),with a 5.64%exceedance *** observed amongmachinery types,with low-power engine forklifts showing higher smoke *** NO_(x)emission range was 71–1516 ppm,followed a normal distribution(μ=565.54,δ=309.51,R^(2)=0.83).Differences among machinery types were relatively *** rated net power had the most significant impact on NO_(x)***,NO_(x)emissions from construction machinery need further ***,we found a weak negative correlation(p<0.05)between the emission level of smoke and NO_(x),that is the synergic emission reduction effect is poor,emphasizing the need for NO_(x)emission *** the future,the oversight in Beijing should prioritize phasing out ChinaⅠand ChinaⅡmachinery,and monitor emissions from highpower engine ChinaⅢmachinery.

关键词： Fuel-oil construction machinery Smoke NO_(x) Emission level Regulatory suggestion

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Experimental study of flow over piano key weirs with different plan shapes

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ISH Journal of Hydraulic engineering 2024年第2期30卷 185-195页

作者： Sohrabzadeh Anzani, Hossein Ghodsian, Masoud Faculty of Civil & Environmental Engineering Tarbiat Modares University Tehran Iran Prof. Faculty of Civil and Environmental Engineering and Research Institute of Water Engineering and Management Tarbiat Modares University Tehran Iran

The piano key weir (PKW) is an evolution with more hydraulic efficiency, compared to labyrinth weir. The studies on this type of weir have shown a significant increase in its discharge efficiency, especially at low heads. In this study, discharge coefficient of various shapes of piano key weir (i.e. rectangular, trapezoidal, and triangular) is investigated experimentally. Also, the aeration process of the studied weirs is described. According to the results, it was found that the discharge coefficient of the triangular PKW is about 28.2% more than the discharge coefficient of the rectangular PKW, and the discharge coefficient of the trapezoidal PKW is about 12.9% more than the discharge coefficient of the rectangular PKW. Also, the discharge capacity of the rectangular, triangular, and trapezoidal PKWs are 3.8, 3.96, and 3.96 times the sharp crest weir, respectively. The equations introduced for the discharge coefficient show good agreement (with R2 from 0.968 to 0.988 and average percentage error from 0.82 to 2.6%) between the actual and calculated values. © 2024 Indian Society for Hydraulics.

关键词： Weirs

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SURVEY ON INCONVENIENT DAILY LIFE ACTIVITIES DURING POWER OUTAGES TARGETING HOUSEHOLDS WITH NATURAL DISASTER EXPERIENCE

Journal of Environmental Engineering (Japan)

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Journal of environmental engineering (Japan) 2024年第817期89卷 182-192页

作者： Habara, Hiromi Yamaguchi, Hideki Department of Environmental Engineering Building Research Institute Japan Equipment Standards Division Building Department National Institute for Land and Infrastructure Management Japan

The effective utilization of power generation facilities and energy storage facilities as emergency power sources could be achieved by selecting specifications based on anticipated living conditions and equipment usage during power outages and acting accordingly. This study conducted a survey targeting households that have experienced a natural disaster, aiming to obtain reference data for examining the priority of power supply by a power generation facility and an energy storage facility. This paper presents the results of analyzing survey response data regarding the inconveniences that respondents experienced during power outages in various daily life activities. © 2024 Architectural institute of Japan. All rights reserved.

关键词： Energy storage

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Estimation of rectangular and triangular side weir discharge

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ISH Journal of Hydraulic engineering 2023年第1期29卷 12-23页

作者： Balahang, Saeed Ghodsian, Masoud Civil and Environmental Engineering Tarbiat Modares University Tehran Iran Faculty of Civil and Environmental Engineering and Research Institute of Water Engineering and Management Tarbiat Modares University Tehran Iran

In this paper, a straightforward approach was applied for estimating the discharge of sharp-crested rectangular and triangular side weirs. The extensive experimental data (356 for rectangular side weir and 362 for triangular side weir) and the available data from other sources (171 for rectangular side weir and 145 for triangular side weir) were used for the analysis. The effects of approach Froude number Fr 1, ratio of weir height to upstream flow depth p/y 1, ratio of effective weir length to main channel width L/B, and ratio of effective weir length to upstream flow depth L/y 1 were studied. It was found that the parameters p/y 1, Fr 1, and L/B have a reciprocal effect on each other. Sensitivity analysis performed by using ANFIS model, showed that the relative discharge of the rectangular side weir is influenced by Fr 1, p/y 1, L/B, and L/y 1. Moreover, Fr 1 for triangular side weir and p/y 1 for rectangular side weir are the most effective parameters influencing the relative discharge. Meanwhile, L/y 1 has a secondary effect on the relative discharge of side weir. Based on dimensional analysis, new explicit equations for estimating the relative discharge for rectangular and triangular side weirs were presented. The results were also compared with previous studies. The capability of ANN, ANFIS, SVR, and GBRT methods was also evaluated in estimating the side weir relative discharge. The ANFIS model for rectangular side weir with MSE = 0.0011 and CP10% = 85.09, and SVR model for triangular side weir with MSE = 0.0011 and CP10% = 87.25 were found to be the superior models in estimating the relative discharge. © 2021 Indian Society for Hydraulics.

关键词： Weirs

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Assessing the factors associated with pedestrian injury in motorcycle-pedestrian crashes in Ghana

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Journal of Traffic and Transportation engineering(English Edition) 2025年第2期12卷 410-419页

作者： Emmanuel Kofι Adanu Robert Ambunda William Agyemang Moses Tefe Steven Jones Alabama Transportation Institute The University of Alabama School of Engineering & the Built Environment University of Namibia Building and Road Research Institute of the Council for Scientific and Industrial Research (CSIR-BRRI) Department of Civil & Environmental Engineering and Construction Management Norwich University

In road safety analysis, motorcyclists and pedestrians constitute the most vulnerable road user groups. However, in the interaction between motorcycles and pedestrians, pedestrians tend to be at a greater risk of injury and death. In safety literature, much research has been dedicated to the study of motor vehicle-motorcycle and motor vehicle-pedestrian crashes, and very little research has been done on motorcycle-pedestrian crashes. This study contributes to efforts to fill in the gap in this important safety area from the perspective of a rapidly developing middle-income country, Ghana, where the growth in motorcycle activities has been exponential over the past few years. To achieve this,motorcycle-pedestrian crash data for Ghana from 2015 to 2019 were obtained from the Ghana National Road Traffic Accident database at the Building and Road Research institute(BRRI) of the Council for Scientific and Industrial Research(CSIR). After cleaning, a total of2655 motorcycle-pedestrian crash observations were available for analysis and model estimation. The distribution of crashes by severity shows that 16.69% were fatal, 53.10%were incapacitating injuries, and 30.21% were minor injury crashes. The study adopted the random parameters logit with heterogeneity in means and variances approach to develop an injury severity model to understand how various crash factors influence pedestrian injury outcomes. The model estimation results reveal that pedestrians who were struck while crossing the road were more likely to be killed or seriously injured. The likelihood of fatal injury was found to be high at night and when the motorcyclists bolt after hitting a pedestrian. Speeding was also found to be associated with fatal injury outcome. This study is expected to stimulate conversations in the road safety community to pay attention to this silent safety concern. Ultimately, the findings of the study provide data-driven evidence to support countermeasure development and implementati

关键词： Motorcycle safety Pedestrian crashes Low-and middle-income countries Traffic safety

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Onsite strength determination for early-opening decision making of high early strength concrete pavement

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Journal of Traffic and Transportation engineering(English Edition) 2023年第2期10卷 291-303页

作者： Katelyn Kosar Lucio Salles de Salles Naser Pourakbar Sharifi Julie Vandenbossche Lev Khazanovich Department of Civil and Environmental Engineering University of PittsburghPittsburghPA 15261USA Department of Civil Engineering Technology Environmental Management and SafetyRochester Institute of TechnologyRochesterNY 14623USA

High early strength(HES)concrete pavements are commonly opened to traffic within the first 24 h after construction,making early-opening decisions critical for pavement quality and traffic ***,most state departments of transportation rely on compressive strength testing for early-opening decision ***,there laboratory tests are labor intensive,costly and not always representative of field strength *** this study,non-destructive testing(maturity and ultrasonic tomography)was explored for faster and reliable in-situ strength *** experimental section constructed using HES concrete was routinely monitored using compressive testing,maturity,and ultrasonic tomography in the first 24 h after *** shear wave velocity,measured using ultrasonic tomography,was able to capture the strength-gain variability within a single slab and between different slabs due to the ability to monitor several locations in a short period of *** results were consistently conservative in the first 24 h of *** show that both maturity testing and ultrasonic tomography are able to replace or add to conventional strength testing for HES concrete pavements to facilitate making the opening decision within the first 24 *** tomography proved more beneficial as a result of the device's portability,increased speed of testing,and accurate estimations of HES concrete strength for the entire pavement length.

关键词： Road engineering High early strength concrete pavement Traffic early-opening Strength Maturity Ultrasonic tomography

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Compaction as a cost-effective strategy to upgrade the disposal of MSWI fly ash:feasibility and potential

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Frontiers of environmental Science & engineering 2025年第3期19卷 145-158页

作者： Shijin Dai Fafa Xia Bo Yang Deli Wu Dongjie Niu Youcai Zhao Xunchang Fei Zhanbo Cheng Hongping He Baoan District City Appearance and Environment Comprehensive Management Service Center Shenzhen 518101China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China School of Civil and Environmental Engineering Nanyang Technological UniversitySingapore 639798Singapore

Landfilling remains the primary disposal method for fly ash produced from municipal solid waste incineration(MSWI)following stabilization/***,the increasing generation of stabilized fly ash(SFA)is accelerating the depletion of landfill ***,the small particle size and low bulk density of SFA present significant environmental risks during handling and *** mitigate these issues,a cost-effective compaction method was introduced into the SFA disposal *** results show that SFA from both grate furnaces and fluidized bed incinerators exhibited high porosity,loose structure,and irregular particle morphology,indicating substantial potential for *** parameters influencing compaction effectiveness included compaction pressure,holding duration,and moisture content,with optimal values identified as 100–200 MPa,20 s,and 10%–15%moisture,respectively,depending on the incinerator *** compaction treatment,the density of SFA more than doubled,while its volume was reduced by over 60%,significantly increasing landfill capacity and enhancing the efficiency of SFA *** compaction process was effectively modeled using the Huang Peiyun equation for gerate furnace ash and the Heckel equation for fluidized bed ***,the unconfined compressive strength and three-point bending strength of compacted SFA met the MU10 standard for lime-sand bricks,making the material suitable for transportation and ***,the compaction-based disposal method for SFA demonstrated clear techno-economic advantages and significant potential for broader application in waste management strategies.

关键词： Stabilized fly ash Compaction process Volume reduction Disposal upgrading

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Prediction model on hydrolysis kinetics of phthalate monoester:A density functional theory study

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Journal of environmental Sciences 2024年第1期135卷 51-58页

作者： Tong Xu Jingwen Chen Deming Xia Weihao Tang Jiansheng Cui Chun Liu Shuangjiang Li College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050000China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China

As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing environmental persistence of chemicals remain elusive for ***,kinetics of base-catalyzed and neutral hydrolysis for 18 MPEs with different leaving groups was investigated by density functional theory *** indicate that MPEs with leaving groups having p Kaof<10 prefer dissociative transition *** are more persistent than their parents,and their hydrolysis half-lives were calculated to vary from 3.4 min to 79.2 years(p H=7–9).A quantitative structure-activity relationship model was developed for predicting the hydrolysis kinetics *** was found that p Kaof the leaving groups and electronegativity of the MPEs are key factors determining the hydrolysis *** work may lay a theoretical foundation for better understanding the chemical process that governs MPE persistence in aquatic environments.

关键词： Phthalate monoesters Phthalate esters Hydrolysis Density functional theory Quantitative structure-activity relationship

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