检索结果-内蒙古大学图书馆

40th IEEE Photovoltaic Specialist Conference, PVSC 2014

作者： Mughal, Maqsood Ali Newell, M.J. Vangilder, Joshua Thapa, Shyam Wood, Kayla Engelken, Robert Carroll, B.R. Bruce Johnson, J. Environmental Sciences Graduate Program Arkansas State University JonesboroAR72467 United States Electrical Engineering Program Arkansas State University JonesboroAR72467 United States Physics Program Arkansas State University JonesboroAR72467 United States

ISBN: (纸本)9781479943982

In the last few years, notable progress in understanding the growth mechanism of thin solar films deposited by numerous techniques have been made. Electrodeposition continues to be a complex deposition technique that can lead to low-quality material regions (crack) in the semiconductor material. Such cracks form porous zones on the substrate and diminish the heterojunction interface quality of a photovoltaic (PV) cell. In this paper, electrodeposition of In2S3 films was systematically and quantitatively investigated by varying the electrodeposition parameters including bath composition, current density, deposition time, and deposition temperature. Their effects upon the film growth mechanism, composition, and morphology were studied with the help of scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and fracture and buckling software (digital image analysis). In addition, the effect of different glass-substrates (Mo, ITO, and FTO) and annealing treatments upon the performance of the electrodeposited In2S3 film was analyzed. Furthermore, the Taguchi Method was used to determine the optimal electrodeposition parameters and study their influence upon the morphological and compositional properties of In2S3 films. © 2014 IEEE.

关键词： Sulfur compounds

来源：评论

学校读者我要写书评

暂无评论

Systemic evaluation of spatio-temporal variations in travel time reliability due to a toll road over time

引用

Urban, Planning and Transport Research 2021年第1期9卷 36-59页

作者： Mathew, Sonu Pulugurtha, Srinivas S. Graduate of Infrastructure & Environmental Systems (INES) Program The University of North Carolina at Charlotte Charlotte NC United States Professor of Civil & Environmental Engineering Department Director of Infrastructure Design Environment & Sustainability (IDEAS) Center The University of North Carolina at Charlotte Charlotte NC United States

This paper evaluates the effectiveness of toll roads in reducing congestion and improving travel time reliability on streets within its vicinity, over time. The data, from the year 2013 to 2017, for the Triangle Expressway in the city of Raleigh, North Carolina was used in the systemic evaluation process. The spatial and temporal variations in the travel time distributions on the toll road, parallel route, and near-vicinity cross-streets (in a 2-mile buffer) were evaluated. The average travel time (ATT), the 95th percentile travel time (or planning time, PT), the buffer time (BT), and the buffer time index (BTI) were computed for each link by the day-of-the-week and the time-of-the-day. Though there was an improvement in travel time after the speed limit change in the year 2014, the travel time reliability got reduced on the Triangle Expressway. Over time, there was a gradual improvement in BT and BTI. The parallel route reliability decreased significantly over time, whereas the travel time reliability of cross-streets showed a consistent trend. The stabilization of travel time distributions and the reliability measures in the year 2017 indicate that further reduction in performance measures may not be expected in the next few years on the near-vicinity links. © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

关键词： buffer time buffer time index road spatial temporal Toll travel time

来源：评论

学校读者我要写书评

暂无评论

Replacing diesel with biogas in decentralized electricity generation systems: a feasibility assessment from workers’ perspective with a modified Human Development Index (HDI) approach

引用

Socio-Ecological Practice Research 2024年第3期6卷 263-281页

作者： da Silva Miranda, Denis de Araujo, Jaylton Bonacina Kulay, Luiz Chemical Engineering Department Polytechnic School University of São Paulo (USP) São Paulo Brazil Graduate Program in Urban Environmental Sustainability (PPGSAU) Federal Technological University of Paraná (UTFPR) Curitiba Brazil

Despite Brazil's high electricity universalization rates, around 1 million Amazon inhabitants need access to this service. An environmentally sustainable way of solving the problem is using biogas from agricultural residues as fuel for electricity cogeneration. This study explores the social effects of this solution, aiming to support more sustainable development for the Brazilian Amazon based on the conscious use of resources and the active involvement of the local population. We compare the social performance of diesel electricity generation (the current scenario) with that of biogas-operated systems for three locations in the Amazon: Aveiro, Porto de Moz, and Prainha. To this end, the following steps were carried out: (i) characterize the analysis scenarios, (ii) determine the personnel associated with each project, (iii) estimate normalized social performance indices considering aspects such as health, education, and income, for the calculation of the Workers' Human Development Index (W-HDI) in different situations, and (iv) analyze the results and formulate a recommendation. The disparities between W-HDI values for the renewable and non-renewable scenarios were less than 10%, even though a slightly better effect concerning diesel systems was observed for Aveiro and Prainha. Conversely, a local biogas energy generation system can generate up to 6 times more wages and 5.5 times more jobs, exhibiting a great potential to reduce social inequalities in these traditionally poor regions. The W-HDI proved a valuable metric for measuring social impacts for a sector devoid of data like the one analyzed herein. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2024.

关键词： Amazon Biogas Energy production Human Development Index Social life cycle assessment Workers

来源：评论

学校读者我要写书评

暂无评论

Enhancing TA grading of technical writing: A look back to better understand the future 122

Enhancing TA grading of technical writing: A look back to be...

引用

2015 122nd ASEE Annual Conference and Exposition

作者： Kecskemety, Krista M. Theiss, Andrew H. Kajfez, Rachel Louis Ohio State University Engineering Education Innovation Center United States Ohio State University Biomedical Engineering Graduate Program United States Engineering Education Innovation Center Department of Civil Environmental and Geodetic Engineering Ohio State University United States

Technical writing is an important skill in all engineering disciplines. Many first-year engineering programs (FYEPs) include technical writing as one of their core course components to begin to instill the importance of and to develop this skill early in aspiring engineers. In order to assess student learning and provide feedback on technical writing, proper grading of these assignments is essential. This paper presents the preliminary assessment results of a new grading training program for teaching assistants (TAs) in a FYEP that was implemented at a large land grant institution while situating the findings in past research related to the grading of writing assignments and preparing TAs. This paper summarizes the approach used to enhance the grading of TAs. We supplement this discussion with quantitative and qualitative assessment results. Finally, we provide recommendations or "Tricks of the Trade" for TAs who may be grading technical writing and those who are responsible for training TAs for this type of grading. © American Society for engineering Education, 2015.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Effect modification by cardiovascular and metabolic disease onset on long-term PM2.5 exposure and mortality: a nationwide cohort study

引用

Scientific Reports 2025年第1期15卷 1-14页

作者： Hyemin Jang Jinah Park Jeongmin Moon Insung Song Ayoung Kim Cinoo Kang Jieun Oh Dohoon Kwon Ho Kim Eun Soo Lee Dongmug Kang Seoyeong Ahn Whanhee Lee Jieun Min Ejin Kim Michelle L. Bell Department of Public Health Sciences Graduate School of Public health Seoul National University Seoul South Korea Department of Occupational and Environmental Medicine Pusan National University Yangsan Hospital Yangsan South Korea Department of Preventive and Occupational & Environmental Medicine School of Medicine Pusan National University Yangsan South Korea School of Biomedical Convergence Engineering College of Information and Biomedical Engineering Pusan National University Yangsan South Korea Research and Management Center for Health Risk of Particulate Matter Seoul South Korea Department of Environmental Medicine College of Medicine Ewha Womans University Seoul South Korea Institute of Health and Environment Graduate School of Public Health Seoul National University Seoul South Korea School of the Environment Yale University New Haven CT USA Interdisciplinary Program in Precision Public Health Department of Public Health Sciences Graduate School of Korea University Seoul South Korea

Cardiovascular and metabolic diseases–specifically myocardial infarction, congestive heart failure, cerebrovascular disease, peripheral vascular disease, renal disease, and liver disease–are major public health concerns worldwide. However, studies examining how these diseases modify the relationship between long-term PM2.5exposure and mortality remain scarce. Using a Cox regression model with a population-representative cohort from South Korea, we estimated the modifying effects of six major cardiovascular and metabolic diseases on PM2.5-mortality association in two cohorts: (1) individuals without underlying diseases (NoUD) and (2) those with only hypertension and/or diabetes (HTN/DM). The interaction between PM2.5and each disease onset was used to estimate effect modification, with results presented as relative hazard ratios (RHRs) per 10 µg/m3increase in PM2.5. Among 183,834 subjects, non-accidental deaths occurred in 18.0% of the NoUD (N= 134,584) and 25.7% of the HTN/DM (N= 49,250). In the NoUD cohort, renal disease (RHR: 1.58; 95% CI: 1.27–1.97), myocardial infarction (1.41; 1.15–1.73), and liver disease (1.40; 1.25–1.57) significantly modified the effect of PM2.5on mortality. In the HTN/DM cohort, renal disease (1.74; 1.43–2.12), myocardial infarction (1.62; 1.29–2.05), and cerebrovascular disease (1.32; 1.17–1.51) showed higher RHRs. Our findings highlight the importance of consistent and preemptive care for renal disease and myocardial infarction and provide evidence for target-specific interventions to reduce the risk of PM2.5on mortality.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Water-Energy Nexus with Fast-Changing Operation Constraints in the Metropolitan Region of São Paulo, Brazil

Water-Energy Nexus with Fast-Changing Operation Constraints ...

引用

World environmental and Water Resources Congress 2022: Adaptive Planning and Design in an Age of Risk and Uncertainty

作者： Zambon, Renato C. Marins, José C. Yeh, William W.-G. Dept. of Hydraulic and Environmental Engineering Univ. of São Paulo Brazil Graduate Program In Energy Institute of Energy and Environment Univ. of São Paulo Brazil Dept. of Civil and Environmental Engineering Univ. of California Los Angeles United States

ISBN: (数字)9780784484258

ISBN: (纸本)9780784484258

The Metropolitan Region of São Paulo (MRSP) water supply system in Brazil is one of the largest in the world. It supplies water to 21.5 million inhabitants and is upstream of the Metropolitan Region of Campinas. The region has 3.1 million inhabitants in the Piracicaba, Capivari, and Jundiaí River basins (PCJ). The water supply system consists of seven main reservoir subsystems and is currently recovering from the worst drought in history. Cantareira subsystem is the largest in both water supply and storage capacity. It transfers water from the PCJ to the MRSP. There are two newly built water transfer systems: one from the Jaguari Reservoir, directly linked to the Cantareira subsystem, and another from the São Lourenço Reservoir, which is connected to a new water treatment plant. Both water transfer systems operate at very high energy costs. Additionally, there exist conflicts among all water users. The primary role of the two new water transfer systems was to increase water security. Since 2017, the newly imposed minimum required flows at PCJ increased the releases from Cantareira subsystem by 5 m3/s. But this increase necessitates both São Lourenço and Jaguari to operate at almost full capacity as well as at much higher energy cost, while the less expensive Cantareira subsystem stands operating with idle capacity to sustain higher required downstream releases. Currently, Brazil is facing a new record-breaking drought, now in the southeast region, with simultaneous water and energy crisis. In this paper we use SISAGUA, a previously developed nonlinear optimization model, to evaluate the impacts of the modified constraints on the management of the MRSP water supply system, considering energy consumption, operational costs, and water security. © ASCE.

关键词： Water supply

来源：评论

学校读者我要写书评

暂无评论

Relationship Population Density of Aquatic Sediment Macrozoobenthos to River Water Quality Parameters： Case Study of Upstream Citarum River in Bandung Regency

引用

Journal of environmental Science and engineering(A) 2016年第3期5卷 117-125页

作者： Barti Setiani Muntalif Nurul Chasanah Mohammad Faiz Faza Departement of Environmental Engineering Institute Technology Bandung Bandung 40132 Indonesia Environmental Engineering Program Post-Graduate Academy Institute Technology Bandung Bandung 40132 Indonesia

The increase in anthropogenic activities occur along the upstream of Citarum River Basin （CRB） in Bandung regency had a negative impact to the water quality caused by the presence of human activity, it will be able to be a disruption to the ecosystem aquatic. The purpose of this study was to determine the relationship of the physical and chemical parameters of water and sediment to the presence of macrozoobenthos populations. Based on the result of Pearson Correlation Analysis （PCA）, the parameters of COD, TOC and silt composition were the highest correlation to the macrozoobenthos population density, the value were 0.966, 0.865 and 0.576. Although PCA analysis is used to determine the relationship between the parameters of water, sediment and sediment particle distribution, the result showed that the water parameters were the mayor component affected the density of macrozoobenthos. While based on the composition of sediment, it is found that substrate as silt, clay and gravel and phosphate parameter affected the density of macrozoobenthos. The measurement of water quality also were calculated by Biotic Monitoring Working Party-Average Score Per Taxon （BMWP-ASPT） index showed that the quality were polluted condition, although by Pollution Index （IP） method showed as a light polluted category.

关键词： Citarum upstream correlation sediment macrozoobenthos water quality.

来源：评论

学校读者我要写书评

暂无评论

Marginal Cost of Energy Volatility in the Brazilian Interconnected Power System

Marginal Cost of Energy Volatility in the Brazilian Intercon...

引用

World environmental and Water Resources Congress 2023: Adaptive Planning and Design in an Age of Risk and Uncertainty

作者： Rodrigues, Daniel Lyra Borges, Camila Brandão Nogueira Zambon, Renato Carlos Yeh, William W.-G. Graduate Program in Energy Institute of Energy and Environment Univ. of São Paulo Brazil Dept. of Hydraulic and Environmental Engineering Univ. of São Paulo Brazil Dept. of Civil and Environmental Engineering Univ. of California Los Angeles United States

ISBN: (数字)9780784484852

ISBN: (纸本)9780784484852

From 2018 to 2022, on average, 70% of the Brazilian effective electric generation was produced by hydropower, 10% by wind power, and 20% by thermal power plants. Over the last five years, Brazil suffered from a series of severe droughts. As a result, hydropower generation was reduced, but demand growth was also declined as results of the COVID-19 pandemic and economic recession. From 2012 to 2022, the Brazilian reservoir system operated with, on average, only 40% of the active storage, but storage recovered to normal levels in the first three months of 2022. Despite large capacity of storage reservoirs, high volatility of the marginal cost of energy was observed in recent years. In this paper, we used two optimization models, NEWAVE and HIDROTERM for our study. These two models were previously developed for mid-range planning of the operation of the Brazilian interconnected power system. We used these two models to optimize the operation and compared the results with observed operational records for the period of 2018-2022. NEWAVE is a stochastic dual dynamic programming model which aggregates the system into four subsystems and 12 equivalent reservoirs. HIDROTERM is a nonlinear programming model that considers each of the 167 individual hydropower plants of the system. The main purposes of the comparison are to assess cooperation opportunities with the use of both models and better understand the impacts of increasing uncertainties, seasonality of inflows and winds, demand forecasts, decisions about storage in reservoirs, and thermal production on energy prices. © World environmental and Water Resources Congress *** rights reserved

关键词： Hydroelectric power plants

来源：评论

学校读者我要写书评

暂无评论

Pretreatment of Herbal, Tofu and Fertilizer Waste Using UV/Ozon Technique and Its Utilization for Spirulina sp Cultivation 1

Pretreatment of Herbal, Tofu and Fertilizer Waste Using UV/O...

引用

1st International Conference on Smart City Innovation, ICSCI 2018

作者： Hadiyanto, H. Digda, A. Adetya, N.P. Evanty, M. Chemical Engineering Department Faculty of Engineering Diponegoro University Indonesia Graduate Program of Environmental Science School of Postgraduate Studies Diponegoro University Jalan Prof. Soedarto SH Tembalang Semarang Kotak Pos1269 Indonesia

The herbal, tofu and fertilizer industries contribute considerable waste to the environment. The waste contains COD and organic substances which should be reduced before it is discharged to the environmental body. One of methods is by using Advanced Oxidation Processes (AOPs) degradation method. The process of AOPs in this study used a combination of UV irradiation and ozone to produce hydroxyl radicals. This study was aimed to investigate the degradation of Chemical Oxygen Demand (COD) by using AOP techniques and to evaluate the treated waste for microalgae growth. This research consists of two steps: (1) the initial COD degradation using UV-Ozon. (2) utilization of the treated waste for microalgae cultivation by combining a mixed nutrient of waste and 10 mg/L TSP, 10 mg/L Urea, 80mg/L NaHCO3. The results showed that the COD degraded by UV/Ozone follows the first order equation by k value of 0.082/day, 0.223/day and 0.436/day for tofu, herbal and fertilizer waste respectively. The growth rate of Spirulina cultivated in waste medium was in comparable with the one cultivated in control medium. © 2019 IOP Publishing Ltd. All rights reserved.

关键词： Chemical oxygen demand

来源：评论

学校读者我要写书评

暂无评论

Interdisciplinary graduate education in water and environmental resources in 2050

Interdisciplinary graduate education in water and environmen...

引用

World environmental and Water Resources Congress 2010: Challenges of Change

作者： Saito, Laurel Fiedler, Fritz Cosens, Barbara Kauneckis, Derek Department of Natural Resources and Environmental Science Graduate Program of Hydrologic Sciences University of Nevada Reno NV United States Department of Civil Engineering Waters of the West Graduate Program University of Idaho United States College of Law Waters of the West Program University of Idaho United States Department of Political Science University of Nevada Reno NV United States

ISBN: (纸本)9780784411148

The science and management of environmental- and water-related issues requires an interdisciplinary approach, as recognized by funding agencies, consulting firms, and public organizations. In their role of preparing students for productive professional careers, academic institutions should be able to train students in interdisciplinary approaches, but complications exist in current academic environments that make interdisciplinary education especially challenging. We provide a vision of interdisciplinary graduate education in water and environmental resources in 2050 after presenting a brief assessment of current issues in interdisciplinary education. © 2010 ASCE.

关键词： Water resources

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：