Scientific Research Communications最新文献

{"title":"Monthly Change of Some Climate Parameters and Biocomfort Status in Ordu Province","authors":"O. B. M. Alrabiti, Mehmet Çetin","doi":"10.52460/src.2023.006","DOIUrl":"https://doi.org/10.52460/src.2023.006","url":null,"abstract":"Biocomfort, which is shaped depending on the suitability of climate parameters, is an important criterion that affects people's comfort, peace, happiness and performance, as well as their health. Therefore, determining suitable areas in terms of biocomfort and using them as a base in the planning of residential areas is of great importance in terms of both human health and happiness and energy efficiency. In this study, suitable areas in terms of wind, temperature, relative humidity and biocomfort, which shape the biocomfort situation in Ordu, which is one of the largest cities in Turkey and whose population is constantly increasing, were determined on a monthly basis. As a result of the study, it has been determined that the wind speed, temperature and relative humidity parameters that are the subject of the study prevent the formation of biocomfort areas to a large extent. While the wind speed causes the formation of uncomfortable areas in January, February, March, April, October, November and December, there are areas where the temperature is below 15 °C in many months, and high humidity causes the formation of uncomfortable areas every month. Suitable areas in terms of biocomfort account for 0.4% of the surface area of Ordu in May, 1.36% in June, 1.45% in July, 1.77% in August, and 8.06% in September. In January, February, March, April, November and December, the entire province is within the scope of uncomfortable areas.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121055533","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}

{"title":"An Overview of Impact of Agrochemicals on Human Health and Natural Environment","authors":"Mohamed Said","doi":"10.52460/src.2023.009","DOIUrl":"https://doi.org/10.52460/src.2023.009","url":null,"abstract":"Agrochemicals exposure periods and levels, types of agrochemicals used and various environmental condition of the areas are factors for acute and chronic poisoning on human health and environment. Although agrochemicals are the result of modern technology that depends on inorganic fertilizers and pesticides, their continuous use against agricultural pest and disease vectors poses serious threats upon both human health and environment. Overuse of these chemicals have severe effects on human and environment that may lead to immediate and long-term effects. In developing countries, it is very difficult to find out the impact on the environment due to lack of awareness, training, and adequate knowledge for using agrochemicals. Investigating farmer’s awareness of agrochemicals residues and their behaviors regarding application is important in order to reduce human factors that negatively affect environmental safety. This review focuses on a summary of both national and international studies regarding the impact of pesticide and chemical fertilizer residues on nature, both human and environment. The review has revealed the hazardous effects like cancer, neural disorders, and other health related problems and environmental risks associated with agrochemicals exposure.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348237","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}

{"title":"Determination of Boron for Indoor Architecture Plants Used in Indoor Architectural Designs","authors":"A. Aisha, M. Çetin","doi":"10.52460/src.2023.007","DOIUrl":"https://doi.org/10.52460/src.2023.007","url":null,"abstract":"Air pollution has become a global problem that affects the health of millions of people every year. Among the air pollutants, heavy metals are particularly infamous as they tend to bioaccumulate, can be toxic to human health even at low concentrations, and that even those that are necessary for living things as nutrients can be harmful at high concentrations. Boron (B), a microelement, is both extremely dangerous and important for human health, as it can cause toxic effects when used more or less. As with other heavy metals, the ingestion of B through the respiratory tract is extremely harmful to health. It is very important to monitor the change of B concentration in the air and reduce the pollution level. In order to contribute to the studies in this field, the change of B concentrations in some indoor plants grown in controlled, smoking and traffic environments was determined within the scope of this study. The results of the study showed that camel sole, diphenbahya, drasena, chiefera and yukka species are quite suitable for monitoring the change of B concentrations in the air. It has been determined that the most suitable species that can be used to reduce B pollution in the air are rubber and spatiphyllium.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116235104","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}

{"title":"A Case Study on PV-Aided Net Zero-Energy Building: the Daycare in IKCU","authors":"Loic Rebnodji Djana, Ş. Güngör","doi":"10.52460/src.2023.010","DOIUrl":"https://doi.org/10.52460/src.2023.010","url":null,"abstract":"At the core of our growing societies, energy supply stands as one of the major concerns today, and it will be an inevitable challenge for our near future. As the nations are looking to find solutions for the transition from fossil fuels – depleting at a high rate – to alternative energy sources, solar energy through PV cells is getting attention as an affordable and easily implemented option especially for power supply in commercial and residential buildings. This work consists in analyzing the possibility to cover the entire energy needs of a building via PV solar cells for the case of a constructed daycare. In this case study, HVAC energy requirement has been calculated by the TS825 standard. The standard specifies a method for calculating the net heating/ventilation energy need and provides the rules for calculating the maximum allowable temperature in buildings. First, dimensions of the investigated building are taken and characteristics affecting the thermal insulation are assessed. Then, other energy needs, mainly lighting and electrical devices, are computed in the analysis as internal electricity needs. The scope of this work extends to the assessment of indoor air quality for occupants of building, which is an important aspect in our case study where the occupants are children. ASHRAE standards 62.1 is utilized for this purpose. The standard specifies minimum ventilation rates and other measures intended to provide acceptable indoor air quality to human occupants and that minimizes adverse health effects. The results are obtained for monthly varying solar exposition in the specified area where the building is located to provide supply for the determined energy demand via solar energy. Finally, monocrystalline PV panel system has been proposed with proper orientation and adequate power potential. Based on the obtained results, as well as the economical aspect, inferences and suggestions are made for improvements.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128727891","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}

{"title":"Vibration Control of Flexible Manipulators by Active Cable Tension","authors":"Hayrettin Şen, M. Akdağ","doi":"10.52460/src.2023.008","DOIUrl":"https://doi.org/10.52460/src.2023.008","url":null,"abstract":"The end point vibrations of the serial manipulator should be controlled during motion or working process. In this study the residual vibrations of the flexible manipulator were controlled with cable tensions. The finite element model was established in ANSYS Mechanical APDL. The open loop and closed loop control simulations were performed under the trapezoidal velocity motion profiles. Zero and three different initial strain values were assigned to the cables. As a result, the end point vibration amplitudes, axial forces of the cables and the bending strain values of the one element near the fixed end were observed in order to define the limitations of the sensors and actuators which will be selected for experimental setup.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114081531","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}

{"title":"A Novel Wastewater Load Allocation Approach for River Basins Using Simulation-Optimization Models","authors":"Derya Sadak, M. T. Ayvaz, Alper Elçi, Mehmet Dilaver, S. Ayaz","doi":"10.52460/src.2023.004","DOIUrl":"https://doi.org/10.52460/src.2023.004","url":null,"abstract":"In this study, a new wastewater load allocation approach using a linked simulation-optimization model is proposed to determine the receiving body-based discharge limits by considering the discharge standards used by the European Union Water Framework Directive. By using the proposed approach, wastewater loads of point sources can be determined in such a way that the parameters exceeding the water quality targets (WQT) in receiving water bodiesmeet the relevant WQT. The simulation part is used to determine pollutantconcentrations throughout the river system using the AQUATOX water quality simulation model. However, since AQUATOX is an independent simulation modeland its source code is not publicly available, it is not possible to execute it with the optimization model for the generated load combinations. Therefore, a concentration-response matrix (CRM) is developed as a surrogate water simulation model by using the outputsoftheAQUATOX model. After this process, the developed CRMis integrated into an optimization model where the heuristic differential evolution (DE) optimization approach is used. The performance of the proposed simulation-optimization approach is evaluated on a sub-watershed of the Kucuk Menderes River Basin by considering different wasteload allocation scenarios for the CBOD5 water quality parameter. The results showed that the proposed simulation-optimization approach can effectively allocate the wastewater loads among different point sources by considering the WQT values of the CBOD5 parameter.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132149132","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}

{"title":"Lucas Polynomial Solution of the Single Degree of Freedom System","authors":"Nurcan Baykuş Savaşaneril","doi":"10.52460/src.2023.002","DOIUrl":"https://doi.org/10.52460/src.2023.002","url":null,"abstract":"Free vibration of a single degree of freedom system is a fundamental topic in mechanical vibrations. The present study introduces a novel and simple numerical method for the solution of this system in terms of Lucas polynomials in the matrix form. Particular and general solutions of the differential equation can be determined by this method. The method is illustrated by a numerical application and the results obtained are compared with those of the exact solution.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132981936","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}

{"title":"A Comparison of The Performances of Conventional and Low Salinity Water Alternating Gas Injection for Displacement of Oil","authors":"Emmanuel Bucyanayandi, Muhammed Said Ergül, I. Kocabas","doi":"10.52460/src.2023.003","DOIUrl":"https://doi.org/10.52460/src.2023.003","url":null,"abstract":"This study focuses on identifying the crucial physical and chemical factors, such as gravity, initial oil phase, injection depth, vertical to horizontal permeability contrast, and salinity of injected water for improving oil recovery factor during water alternating gas (WAG) injection. The conventional WAG injection attracts interest from oil and gas industry and hence, has become one of the most reliable enhanced oil recoveries (EOR) techniques. During WAG injection, due to gravity effect, water subsides below oil layer while gas overflow above the oil layer. In fact, water sweeps bottom zones of the reservoir and gas sweep the attic oil at the upper zones of the reservoir. Although the conventional WAG does improve oil recovery factor, there still remains a substantial amount of oil in reservoir pores due to rock-fluid and fluid-fluid interfacial tensions (IFT) that leads to the capillary forces impeding the microscopic displacement efficiency. The low salinity waterflooding (LSWF) was therefore proposed to break the IFT between rock clay and fluids, and further increase oil recovery factor. Recent researches revealed that LSWF alters oil-wet reservoir to water-wet behavior. This wettability alteration is believed to be the main mechanism of LSWF to improve oil recovery. Other mechanisms of LSWF include multi-ion exchange (MIE) between rock clay minerals and injected salt water, pH increase, and fines migration. In this study, the CMG GEM simulator was used to simulate conventional WAG injection and LSWAG injection. The simulation results showed that there is an increase of oil recovery factor of about 6% for WAG injection with low salinity water of 1027ppm to sea water of 51,346 ppm. The simulations have also showed that the physical factors namely, gravity, initial oil phase, injection depth, vertical to horizontal permeability contrast are influential on the displacement efficiency and must be studied thoroughly in the design of LSWAG operations besides the salinity and chemical composition of the injection water.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132200541","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}

{"title":"Numerical Modeling of Flow Pattern at a Right-angled River Bend Using CCHE2D Model","authors":"A. Das, S. K. Biswal","doi":"10.52460/src.2023.005","DOIUrl":"https://doi.org/10.52460/src.2023.005","url":null,"abstract":"In this study, the CCHE2D model is used to analyse the flow pattern in a meander reach of the Gomati River. The finite volume method is used by the numerical model to solve the depth-averaged two-dimensional equations with 𝑘−𝜀turbulence closure. The numerical findings were compared with field data for two different flow rates in order to calibrate the CCHE2D model using various Manning's roughness coefficients. The results show that for the minimum and maximum discharges, a smaller Manning's roughness factor (0.015≥𝑛≥0.025)is more favorableto a higher Manning's roughness factor(0.030≤𝑛≤0.040). The results of the numerical model demonstrated that fluctuations in hydraulic parameters including shear stress, velocity, flow depth, and Froude number in the river bend are greatly influenced by the existence of centrifugal force and helical cells. The linear relationship between velocity and shear stress is presented across the whole study reach, as indicated by the R-squareand linear correlation coefficient (r) components. The results of the model show that the flow field within the river bend can be accurately simulated by the computational model.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124388431","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}

{"title":"Monitoring and Modelling of Sediment Flushing : A Review","authors":"G. Petkovšek","doi":"10.52460/src.2023.001","DOIUrl":"https://doi.org/10.52460/src.2023.001","url":null,"abstract":"With ever decreasing potential for suitable new dam sites, sustainable use of existing water reservoirs is of paramount importance. In absence of appropriate measures, reservoir storage is continually reduced due to sedimentation. One option to remove sediment deposits is hydraulic flushing. During the flushing operation, bottom outlets are open and water and sediment released. Whether flushing successfully removes sediment depends on a number of factors, such as bottom outlets capacity, reservoir shape and water availability. Modelling is often used to assess viability of flushing for sediment management in the reservoir, as well as to design the operations and optimize their scheduling. One-dimensional numerical models are preferred for long term simulations, assessments on of a large number of scenarios, and optimization studies. Two- and three-dimensional numerical models and physical models can be used, each on their own or in combination as hybrid models, to understand local scouring near the gates and other details of operation. Monitoring of flushing operations can help improving their efficiency while at the same time limit downstream impacts. General monitoring of the reservoir and its catchment can help understanding the sedimentation problem and thus facilitate preparation of efficient sediment management strategies. Live monitoring of sediment concentrations is possible with modern equipment though not without challenges, and reservoir survey can be performed faster. Earth observation techniques are also an attractive option, allowing to monitor large areas and areas of difficult access, as well as to provide historical information going back several decades. This paper reviews monitoring and modelling approaches published in the literature, as well as presents some previously unpublished analyses.","PeriodicalId":400190,"journal":{"name":"Scientific Research Communications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124334945","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}