International Journal of Sustainable Energy and Environmental Research最新文献_第3页

Analysis of the Effect of Variations in Refractivity Gradient on Line of Sight Percentage Clearance and Single Knife Edge Diffraction Loss 折射率梯度变化对视线百分比间隙和单刃衍射损失的影响分析

International Journal of Sustainable Energy and Environmental Research Pub Date : 2019-02-27 DOI: 10.18488/JOURNAL.13.2019.81.1.9

Dan Eduediuyai, Johnson Enyenihi, I. Markson

{"title":"Analysis of the Effect of Variations in Refractivity Gradient on Line of Sight Percentage Clearance and Single Knife Edge Diffraction Loss","authors":"Dan Eduediuyai, Johnson Enyenihi, I. Markson","doi":"10.18488/JOURNAL.13.2019.81.1.9","DOIUrl":"https://doi.org/10.18488/JOURNAL.13.2019.81.1.9","url":null,"abstract":"In this paper, analysis of the effect of variations in refractivity gradient on line of sight percentage clearance and single knife edge diffraction loss is presented. Relevant, mathematical expressions and approaches for the analyses are presented. Sample path profile data of terrestrial line of sight (LOS) microwave communication links operating at C-band 5.5 GHz frequency and Ku-band 11 GHz frequency with 15 Km path length are used in the study to demonstrate the application of the ideas presented in this paper. The results showed that the critical point of minimum LOS percentage clearance occurred at a distance of 8.89 Km from the transmitter. Based on the results regression models were derived for relating the refractivity gradient to the effective earth K-factor, earth bulge, LOS percentage clearance and single knife edge LOS percentage clearance. The implication of the result is that, given that for any location the refractivity gradient varies with the primary atmospheric parameters like temperature, pressure and relative humidity, the amount of diffraction loss posed to the signal in the atmosphere will be varying at different rates depending on the prevailing values of the atmospheric parameters upon which refractivity gradient depends. Also, apart from the reference refractivity gradient of 39.25 N units/km, different frequencies will experience different amount of diffraction loss. The specific impact of the refractivity gradient on different frequencies depends on whether the prevailing refractivity gradient is above or below the reference refractivity gradient of 39.25 N units/km.","PeriodicalId":145301,"journal":{"name":"International Journal of Sustainable Energy and Environmental Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122508287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Experimental and Numerical Study of Magnetic Field Impact on the Thermal Solar Collectors 磁场对热太阳能集热器影响的实验和数值研究

International Journal of Sustainable Energy and Environmental Research Pub Date : 2019-02-27 DOI: 10.18488/JOURNAL.13.2019.81.10.28

S. Sami, F. Quito

引用次数: 3

Schematic Modelling of Sustainable Solid Waste Management in Nigeria 尼日利亚可持续固体废物管理的示意图模型

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/journal.13.2020.92.98.109

Samuel Oji Iheukwumere, Kelechi Friday Nkwocha, Chukwuma Patrick Nwabudike

引用次数: 3

Waste Management By Waste to Energy Initiatives in India 印度废物转化为能源的废物管理计划

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/JOURNAL.13.2021.102.58.68

Manish Kumar, Subodh Kumar, S. Singh

引用次数: 9

Role of Fossil Fuel and Urbanization on Environment Panel Data of China and Japan 化石燃料和城市化对中日两国环境面板数据的影响

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/journal.13.2020.92.73.86

Aiman Javed, Aftab Rafiq, J. Ashraf, Abdullah, Tasir Khan

{"title":"Role of Fossil Fuel and Urbanization on Environment Panel Data of China and Japan","authors":"Aiman Javed, Aftab Rafiq, J. Ashraf, Abdullah, Tasir Khan","doi":"10.18488/journal.13.2020.92.73.86","DOIUrl":"https://doi.org/10.18488/journal.13.2020.92.73.86","url":null,"abstract":"This study explore the association between the fossil fuel base power plants, increasing urbanization, manufacturing with (CO2) emissions and their role toward the environmental deterioration of two economies china and Japan. We have used the data of thirty six year 1980-2015, and apply the panel data analysis technique and fixed effect and random effect model for the analysis and find fixed effect model is appropriate by the use of hausman test study conclude that coal base power plants in china and Japan are the significant and positive contributor to raise the level of (CO2) in atmosphere. Oil base power plants are emitting the Carbon significantly and having the positive relationship with (CO2) emissions, natural gas base power plants show a negative effects on (CO2) emission and insignificant in this study .Raising level of urbanization in the cities raise the level of (CO2) emissions, increasing level of manufacturing value addition also significant contributor of (CO2) emission and negatively influencing the environment of the world. China’s and japans government should try to reduce the electricity production from fossil fuels and try to develop the new renewable source of energy which having least carbon emission with optimal cost and also Reduced the level of urbanization and manufacturing to make the environment clean and friendly. big role sector","PeriodicalId":145301,"journal":{"name":"International Journal of Sustainable Energy and Environmental Research","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127344323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Energy in Nigeria: An Integrated Women-Friendly Energy Supply Approach 尼日利亚的可持续能源:一种对妇女友好的综合能源供应方法

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/JOURNAL.13.2021.102.47.57

Ezekwesili C.N, Aduba C.C, Arazu V.A, Ughamba K.T

{"title":"Sustainable Energy in Nigeria: An Integrated Women-Friendly Energy Supply Approach","authors":"Ezekwesili C.N, Aduba C.C, Arazu V.A, Ughamba K.T","doi":"10.18488/JOURNAL.13.2021.102.47.57","DOIUrl":"https://doi.org/10.18488/JOURNAL.13.2021.102.47.57","url":null,"abstract":"Sustainable energy is at the center of pursuit of sustainable development goals (SDGs). Gender inequality, fueled by religious and cultural beliefs, has hampered the achievement of sustainable energy supply in Nigeria. Women, who are major consumers of energy, are largely excluded from energy production due to a relative deficiency in technical training. The paper focuses on integrating women in sustainable energy supply in Nigeria through the adoption of women-friendly energy production methods such as biogas production. The importance of installing household biogas plants in rural communities, providing relevant technical training for women, as well as cheap labor for servicing the biogas plants, and establishing accessible markets for sale of excess biogas were discussed. The economic potentials of well-packaged biogas feedstock, and bio-slurry (a by-product of biogas production) were highlighted to portray the win-win characteristics of biogas production. This review exposes the energy crisis in Nigeria as an effect of non-integration of women in energy production/supply systems, and proposed a woman-friendly energy resource that is capable of supporting a sustainable environmentally friendly energy supply in Nigeria.","PeriodicalId":145301,"journal":{"name":"International Journal of Sustainable Energy and Environmental Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121008255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The Effect of Dust on the Output Performance of Solar Module 粉尘对太阳能组件输出性能的影响

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/journal.13.2020.92.110.122

Amusan Joseph Abiodun, Muzan Andrew Imakeh

引用次数: 0

Seasonal Wildfire Outbreak Trend and its Consequences on Forest Biodiversity and the Environment: A Case Study of Sierra Leone 季节性野火爆发趋势及其对森林生物多样性和环境的影响——以塞拉利昂为例

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/JOURNAL.13.2021.102.69.84

M. Fayiah, Roberto Xavier Supe Tulcan

{"title":"Seasonal Wildfire Outbreak Trend and its Consequences on Forest Biodiversity and the Environment: A Case Study of Sierra Leone","authors":"M. Fayiah, Roberto Xavier Supe Tulcan","doi":"10.18488/JOURNAL.13.2021.102.69.84","DOIUrl":"https://doi.org/10.18488/JOURNAL.13.2021.102.69.84","url":null,"abstract":"Sierra Leone is classified as a high wildfire risk country with a weather that support 50% chance of igniting wildfire especially from January to March each year. Wildfire outbreak in Sierra Leone has been having ecological, economic and health impacts on people and the environment over the years. This case study explores Sierra Leone’s wildfire outbreak trend, distribution, status, causes and consequences on biodiversity & the environment and proposed the way forward in tackling wildfire ignition, prevention and control methods in the near future. The daily active fire data from November 2000 to December 2019 were acquired from NASA MCD14DL product. Centroid vectors of fire events in 1 km by 1 km pixel were counted to give the total number of fire events in different administrative regions. Data was imported into the R Studio, version 4.0.3 from 2000-2019 for visualization and other graphical representation. The results show that the north-west and south-west experiences more wildfire incidence than other regions in Sierra Leone hence affecting the natural ecosystem. January to March was detected as the most wildfire prone months especially in the northern part of Sierra Leone. The results suggest that topography; climatic pattern and vegetation type has been considered a strong factor in influencing wildfire ignition over the years. The study concludes that the outdated 1924 fire prevention and control Act and climate change uncertainties are partially responsible for the frequent wildfire outbreak across Sierra Leone. This study is one of the very few studies that investigated wildfire trend, outbreak and causes in Sierra Leone. The study uses data from NASA MCD14DL product from 2000 to 2019. Results show that the north-west and south-west experiences more wildfire incidence with January and March classified wildfire prone months.","PeriodicalId":145301,"journal":{"name":"International Journal of Sustainable Energy and Environmental Research","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125284818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploitation of Solar Energy between the German Leadership and the Reality of the Algerian Experience: Analytical Study During the Period (2000-2017) 德国领导下的太阳能开发与阿尔及利亚经验的现实:2000-2017年期间的分析研究

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/journal.13.2019.82.108.120

Amal Rahmane, Abdelhak Bentafat, Ahmed Sellami

引用次数: 1

Analysis of Physico-Chemical Properties and Bacteriological Loads of Waste Water Effluent from Oxidation Pond at Woldia University, North Wollo, Ethiopia 埃塞俄比亚北沃罗沃尔迪亚大学氧化池废水的理化性质和细菌负荷分析

International Journal of Sustainable Energy and Environmental Research Pub Date : 1900-01-01 DOI: 10.18488/journal.13.2019.82.100.107

Gizachew Teshome, Y. Abubaker, Hiwot Mengstie

{"title":"Analysis of Physico-Chemical Properties and Bacteriological Loads of Waste Water Effluent from Oxidation Pond at Woldia University, North Wollo, Ethiopia","authors":"Gizachew Teshome, Y. Abubaker, Hiwot Mengstie","doi":"10.18488/journal.13.2019.82.100.107","DOIUrl":"https://doi.org/10.18488/journal.13.2019.82.100.107","url":null,"abstract":"Rivers are vital component of the biosphere that contains less than one percent of the world’s fresh water which is being polluted by indiscriminate disposal of domestic and industrial waste sewerage. The purpose of this study was to analysis the level of heavy metals and physico-chemical characteristics of wastewater effluent from oxidation pond. Samples were collected per month starting from May 2018 up to July2018. Three sampling ponds were selected purposefully among constructed 13 different size oxidation ponds and one site in waste receiver river. Samples were collected by triplicate in each sample sites and totally 12 sample sites were fixed. Some parameters like (pH, Temperature, Conductivity, and Turbidity) were measured in situ. ICP-OES used for analysis heavy metal. XLSTAT version 2014.5.03 was applied for analysis and interpreting the relationship of each water quality parameters using one way ANOVA and Pearson correlation. This study shows Conductivity, pH, were showed highly significance difference among oxidation ponds while temperature showed non-significance difference (a<0.05). Sodium and potassium were found dominantly in all oxidation ponds and showed highly significance difference among sampling sites. The mean concentrations of heavy metals in the various stages of waste water treatment pond is not more polluted based on the WHO and FAO guidelines for different purpose. In general this study revealed that the treated wastewater effluent from oxidation pond is not relevant for human and livestock drinking rather than useable for irrigation purpose. the existing literature to review environmental problem related with domestic, industrial and municipal waste management. This study shows limitation of wastewater treatment using oxidation pond. The primary contribution of this finding is to determine the quality of effluent wastewater to recommend better removal efficiency oxidation pond.","PeriodicalId":145301,"journal":{"name":"International Journal of Sustainable Energy and Environmental Research","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1