Bhutan Journal of Research and Development最新文献_第4页

Effects of Untreated Textile Effluents on Groundwater near Kodda Gazipur Industrial Area in Bangladesh 未经处理的纺织废水对孟加拉国科达加济普尔工业区附近地下水的影响

Bhutan Journal of Research and Development Pub Date : 2022-04-11 DOI: 10.17102/bjrd.rub.10.2.016

Faisal Fahad Rio, N. Khandaker, S. Ahmed

{"title":"Effects of Untreated Textile Effluents on Groundwater near Kodda Gazipur Industrial Area in Bangladesh","authors":"Faisal Fahad Rio, N. Khandaker, S. Ahmed","doi":"10.17102/bjrd.rub.10.2.016","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.016","url":null,"abstract":"As a part of rapid expansion in the economy our RMG and textile industries are increasing at a high rate, but due to lacks in our environmental law and regulation, proper disposal of wastewater still remains questionable. Many factories still didn't implement ETPs many factories occupied ETPs but the use of it on regular basis is still dubious. So, it's pretty much hard to guess our groundwater is still safe from contamination. We select two zones one is effected zone and another was non-effected zone and compare their salt concentration and TDS level where the salt concentration is our decision parameter. As most of the textile dyes have a proportional relationship with the Salt level. We selected Kodda Gazipur is our effected zone. We do two-step analysis to make our research done first we do a GIS analysis to illustrate the spatial variation of TDS and Salt concentration for both affected and non-effected zones. Then we do statistical analysis to find out our hypothesis is statistically significant or not. As a result, we found a surprising outcome t(11) = 2.171, p = .053 which means the relationship between textile effluents and groundwater are statistically insignificant.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130292606","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

Retrofitting The Atrium Of CST Adm Building: To Achieve Optimum Thermal Comfort. CST Adm大楼中庭改造:实现最佳热舒适。

Bhutan Journal of Research and Development Pub Date : 2022-04-11 DOI: 10.17102/bjrd.rub.10.2.018

Tshering Penjor, Chimmi Chimmi

{"title":"Retrofitting The Atrium Of CST Adm Building: To Achieve Optimum Thermal Comfort.","authors":"Tshering Penjor, Chimmi Chimmi","doi":"10.17102/bjrd.rub.10.2.018","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.018","url":null,"abstract":"Energy efficiency and renewable energy have become the twin towers of sustainable development and this ultimate goal can be achieved only if the energy conservation at all levels is efficiently practiced. Energy consumption is the world’s growing concern with building sector topping the energy consumers list. The buildings with its HVAC (Heating Ventilation & Air Conditioning) components and other mechanical system have become one of the world’s largest energy consumers. The building envelope evolution have shown that the wider scope of façade system and glazing options, have further led to solar responsive challenges & massive energy loss. In College of Science & Technology, there are many active means of cooling installed at every corner of the building due to its location and extreme summer heat. Atrium at the east-front of ADM building have necessarily failed in regulating diurnal temperature due to its extensive glazing ratios and areas exposed to the direct sun rays. This research is an attempt to intervene the space: at structure as well as material level to maximize its thermal comfort during daytime through a simulation approach.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123182484","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

Assessing the Groundwater Quality of Rohingya Refugee Camp Cox Bazar Bangladesh 孟加拉国考克斯巴扎尔罗兴亚难民营地下水质量评估

Bhutan Journal of Research and Development Pub Date : 2022-04-11 DOI: 10.17102/bjrd.rub.10.2.020

N. Khandaker

{"title":"Assessing the Groundwater Quality of Rohingya Refugee Camp Cox Bazar Bangladesh","authors":"N. Khandaker","doi":"10.17102/bjrd.rub.10.2.020","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.020","url":null,"abstract":"Groundwater is the singular source of drinking water in Rohingya Refugee Camps, Cox Bazar Bangladesh. A study was conducted to assess the quality of the groundwater and its suitability as potable water. Samples collected from ten water points that are hand pumps connected to borehole wells locally called tube wells of Rohingya Camp16 were collected for analysis of water quality parameters. The water quality parameters that were measured were: pH, turbidity, total hardness, arsenic, manganese, iron, and total coliform. The results indicate that the water is moderately hard with pH values within regulatory limits. Some of the water samples exceed the limit for total iron based on the Government of Bangladesh regulatory standards. The water samples were arsenic free which is a relief for many localities in Bangladesh suffer from the purge of arsenic contaminated groundwater. Unfortunately, many of the water samples collected contains higher than accepted levels of manganese which can be an issue with prolonged consumption. Chronic exposure to manganese results in developmental problems in adolescents. The majority of the waters samples also showed the presence of total coliform and a sure indication that fecal contamination of the water wells is occurring. The water quality data points to a senior that calls for pragmatic water quality assurance and management measures for the sustainable wellbeing of the refugee communities in the refugee camps of Cox Bazar, Bangladesh. We will be putting forth evidence-based sustainable solutions to achieve a sustainable supply of safe drinking water to the Rohingya communities in the camps.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129397982","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

Design of Electronic Voting System for Visually Impaired Persons Using Arduino Mega 2560 基于Arduino Mega 2560的视障人士电子投票系统设计

Bhutan Journal of Research and Development Pub Date : 2022-04-01 DOI: 10.17102/bjrd.rub.10.2.015

Dema Choki, Tshering Penjor, Tashi Phuntsho, Dhan Kumar Rai, Kazuhiro Muramatsu

{"title":"Design of Electronic Voting System for Visually Impaired Persons Using Arduino Mega 2560","authors":"Dema Choki, Tshering Penjor, Tashi Phuntsho, Dhan Kumar Rai, Kazuhiro Muramatsu","doi":"10.17102/bjrd.rub.10.2.015","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.015","url":null,"abstract":"People with visual impairment, even if they are availed to voting, they do not have the privilege to vote confidentially, because of their physical disability. Therefore, a user-friendly and confidential voting system is necessary for visually impaired people. In this paper, we build an electronic voting system for visually impaired people is a user-friendly device which can help those group of people vote independently with sound. The system is built on an Arduino Mega 2560 microcontroller board, a SD card module, an LCD module, several buttons, a buzzer, GSM SIM 900A and a headset. The system has a special voice feature stored in SD card to familiarize them with names of candidates. Also, the voice is passed through a headset for secrecy. In addition, a control unit of the system for polling officials is designed separately from a voting unit for the smooth election procedural. Once user votes, a buzzer is turned on and the system cannot accept the voting. If a control button is pushed, the buzzer is turned off and the system accepts voting. This mechanism is to avoid double voting. A result button is implemented to display final votes for each candidate and store them in the SD card. GSM SIM900A is interfaced with Arduino Mega 2560 to disseminate final results. We can encourage mass participation equally in democracy through the system electronic voting system.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129448095","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

Stator earth fault detection & evaluation of delaminated stator bar ground wall-insulation of generator G-4 of HPP Chhukha – A case study 楚卡HPP G-4发电机定子接地故障检测及接地墙绝缘分层评估——以实例为例

Bhutan Journal of Research and Development Pub Date : 2022-04-01 DOI: 10.17102/bjrd.rub.10.2.014

Rinchen Wangdi, Deependar Sharma, Tshewang Dorji, Tenzin Chophel, Ugyen Tobgay

{"title":"Stator earth fault detection & evaluation of delaminated stator bar ground wall-insulation of generator G-4 of HPP Chhukha – A case study","authors":"Rinchen Wangdi, Deependar Sharma, Tshewang Dorji, Tenzin Chophel, Ugyen Tobgay","doi":"10.17102/bjrd.rub.10.2.014","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.014","url":null,"abstract":"Protective devices are employed to monitor and isolate the faulty equipment whenever faults occur in the power system. In the generator protection system, a conventional stator earth fault protection, which is based on residual over voltage (aka neutral voltage displacement) principle, is observed to be inadequate. The paper thus, discusses on how helpful a modern approach of 100% stator earth fault protection scheme is, and proven effective in generator G- 4 of Chhukha Hydropower Plant (CHP). Also, to assess the health of stator windings, insulation resistance (IR) measurement is the foremost test that needs to be performed to qualify for go- ahead with other insulation tests. HV DC ramp and tan ẟ tests are not uncommon as the tests have been proven useful in evaluating the condition of the groundwall insulation of stator coils. Therefore, this paper also illustrates on investigation and analysis of the test results obtained for a bar, suspected to have groundwall insulation breakdown, due to a number of factors. The test results obtained are compared with that of the other test specimens.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126955149","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

Bhutanese Ornamental Windows and Its Contribution to Inter-story Drift In Rammed Earth Structure- A Case Study 不丹装饰窗及其对夯土结构层间漂移的贡献——一个案例研究

Bhutan Journal of Research and Development Pub Date : 2022-03-31 DOI: 10.17102/bjrd.rub.10.2.013

Nimesh Chettri, Monika Thapa, Tshering Denka

{"title":"Bhutanese Ornamental Windows and Its Contribution to Inter-story Drift In Rammed Earth Structure- A Case Study","authors":"Nimesh Chettri, Monika Thapa, Tshering Denka","doi":"10.17102/bjrd.rub.10.2.013","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.013","url":null,"abstract":"The vernacular structures in Bhutan attributes to the country’s rich tradition and culture. These structures built during 15th – 16th centuries without any technical guidelines still exist with profound pride as Bhutanese traditional buildings even after experiencing great earthquake in the past. Bhutanese vernacular structures exist in various types; while this research paper focuses only on the structural analysis of a commonly found rammed earth house in Paro, considering the effect due to Rabsel. Rabsel is a Bhutanese ornamental window having significant aesthetic and cultural values. These heavy timber components fixed to the wall has tendency to add weights to the wall. During the seismic activity, this might lead to vertical acceleration and overturning moment, which generates a typical P-delta effect inducing lateral as well as vertical loads on the walls. Hence, it is the primary cause of tilting Rabsel, cracking, and buckling of walls as observed in post-earthquake scenarios. Hence, the effect of Rabsel as a shear and moment contributing component will be looked into which is not incorporated in any design process and software. Linear static analysis is performed considering varying weights of Rabsel and the results obtained are used for numerical modeling. The results were found to form the paramount philosophy of designing and executing the construction of future traditional buildings in Bhutan.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122799400","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

Exploration of Groundwater Potential Zones: A Case Study In Phuentsholing 地下水潜力带的勘探:以芬措林为例

Bhutan Journal of Research and Development Pub Date : 2022-03-31 DOI: 10.17102/bjrd.rub.10.2.012

Monika Thapa, Kezang Yuden, S. Acharya

引用次数: 0

A case study on slope instability of Punatshangchhu Hydroelectric Project Authority-I Dam in Bhutan 不丹Punatshangchhu水电站一坝边坡失稳分析

Bhutan Journal of Research and Development Pub Date : 2022-03-30 DOI: 10.17102/bjrd.rub.10.2.011

Rinchen Lhamo

引用次数: 0

Effect of Air Infiltration Rate on Energy Consumption of a Residential Building in Bebena, Thimphu 空气入渗率对廷布贝贝纳住宅建筑能耗的影响

Bhutan Journal of Research and Development Pub Date : 2022-03-30 DOI: 10.17102/bjrd.rub.10.2.010

C. Wangmo, Dawa Dawa, Dhendup Dorji, Neelam Monger

{"title":"Effect of Air Infiltration Rate on Energy Consumption of a Residential Building in Bebena, Thimphu","authors":"C. Wangmo, Dawa Dawa, Dhendup Dorji, Neelam Monger","doi":"10.17102/bjrd.rub.10.2.010","DOIUrl":"https://doi.org/10.17102/bjrd.rub.10.2.010","url":null,"abstract":"Energy consumption in buildings has been a major concern in the present construction field and the parameters that affect its performance should be carefully studied. Building airtightness is an important contributing factor to the energy consumption of a building. The measurement of air infiltration is widely practiced in some countries of Europe and North America. However, this practice is still rare and uncommon in Bhutan. At present, traditional dwellings of Bhutan have been found to be very leaky as compared to the modern Reinforced concrete structure (RCC) buildings mainly due to construction materials and techniques. The paper consists of air infiltration test carried out by the blower door method at a residential building in Bebena, Thimphu. The test has been followed by a series of data collection and interpretation of the readings obtained on site. The result obtained was air movement of 11.9-h through the building envelope which was satisfactory as in the case of Bhutan but was found to be exceeding the international standard of 3.0-h in accordance to ISO 9972:2015. The average air movement of residential buildings in Bhutan is 11.7-h according to the energy baseline report.","PeriodicalId":244206,"journal":{"name":"Bhutan Journal of Research and Development","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128030021","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

Case Studies of Holistic Approach to Engineering: GNH- Engineering 整体工程方法的个案研究:GNH-工程

Bhutan Journal of Research and Development Pub Date : 2022-03-30 DOI: 10.17102/bjrd.rub.10.2.009

N. Khandaker

引用次数: 0