Journal of Biomolecular Techniques最新文献_第6页

Generating Encrypted Document Index Structure Using Tree Browser 使用树形浏览器生成加密文档索引结构

Journal of Biomolecular Techniques Pub Date : 2023-06-26 DOI: 10.51173/jt.v5i2.948

Doaa N. Mhawi, Haider W. Oleiwi, Heba L. Al-Taie

引用次数: 0

Efficient Design, Analysis and Implementation of Super-Lift LUO Converter for Standalone PV Applications 独立光伏应用超升力LUO转换器的高效设计、分析与实现

Journal of Biomolecular Techniques Pub Date : 2023-06-24 DOI: 10.51173/jt.v5i2.785

Zainab A. Ghafour, Ahmed R. Ajel, N. Yasin, Noaman Mohammad Noaman

引用次数: 0

A HOMER-Aided Study for PV System Design and Cost Analysis for a College Campus in Baghdad 巴格达某大学校园光伏系统设计与成本分析的家庭辅助研究

Journal of Biomolecular Techniques Pub Date : 2023-06-24 DOI: 10.51173/jt.v5i2.722

Luqman Q. Ibrahim, Ahmed J. Abid, Adel A. Obed, Ameer L. Saleh, Reheel J. Hassoon

{"title":"A HOMER-Aided Study for PV System Design and Cost Analysis for a College Campus in Baghdad","authors":"Luqman Q. Ibrahim, Ahmed J. Abid, Adel A. Obed, Ameer L. Saleh, Reheel J. Hassoon","doi":"10.51173/jt.v5i2.722","DOIUrl":"https://doi.org/10.51173/jt.v5i2.722","url":null,"abstract":"Due to the lack of electric power generation in Iraq and as a step forward to adopting a sustainable campus of the Electrical Engineering Technical College (EETC), Middle Technical University, in Baghdad, Iraq, and the critical demand for energy in our institutions, particularly educational institutions, this pilot study was proposed. The study aims to analyze the adoption of PV solar systems on the campus in the presence and absence of grid power and how that affects our design discussion in the matter of Net Present Cost (NPC), Cost of Energy (COE), Operation Cost, initial cost, power production, fuel consumption, and the annual net consumed energy from the grid. Forty-five different scenarios were analyzed for all possible cases. The existence of backup generators on the campus was also taken into consideration; G1-350kVA and G2-500kVA. The study has two stages. In the first stage, they used a walkthrough energy audit in the (EETC) to estimate the load profile of the campus, while in the second stage, they used HOMER Pro to analyze this data. The results show that adding an on-grid PV system to the campus grid can reduce the COE by 58%, and it is the best scenario when the grid is present, with an NPC, operation cost ($/yr), and initial capital ($) equal to $77,680, $1,460, and $59,018 respectively. When the grid was absent, the winning scenario was using a PV solar system with a 100-kWh lithium battery storage and a converter. Despite that scenario being the best solution, the produced energy cost is 372% higher than the grid energy cost (0.1 $/kWh) in Iraq, with an NPC, operation cost ($/yr.), and initial capital ($) equal to $337,291, $7,855, and 236878 respectively. Finally, both winning scenarios have no generator, and this will have a high impact on the campus environment.","PeriodicalId":39617,"journal":{"name":"Journal of Biomolecular Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77762035","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

Numerical Study to Investigate the Performance of U-shaped Flat Plate Solar Collector Using Phase Change Materials (PCMs) 相变材料u型平板太阳能集热器性能的数值研究

Journal of Biomolecular Techniques Pub Date : 2023-06-24 DOI: 10.51173/jt.v5i2.1302

Ibrahim Lazim Ihnayyish, A. Ahmed, A. Mohammad, A. Khalid, Shaker Al-Syyab

引用次数: 0

Object Tracking with the Drone: Systems Analysis 无人机的目标跟踪:系统分析

Journal of Biomolecular Techniques Pub Date : 2023-06-24 DOI: 10.51173/jt.v5i2.755

Abbas Aqeel Kareem, Dalal Abdulmohsin Hammood, Ruaa Ali Khamees, Nurulisma Binti Hj. Ismail

引用次数: 0

A Comprehensive Review of Multi-Port DC/DC Converters for The Off-Grid System Integration with Renewable Energy Resources 可再生能源离网系统集成多端口DC/DC变换器综述

Journal of Biomolecular Techniques Pub Date : 2023-06-23 DOI: 10.51173/jt.v5i2.1227

Ruaa M. Al-dalawi, Ayad Al-dujaili, Daniel A. Pereira

{"title":"A Comprehensive Review of Multi-Port DC/DC Converters for The Off-Grid System Integration with Renewable Energy Resources","authors":"Ruaa M. Al-dalawi, Ayad Al-dujaili, Daniel A. Pereira","doi":"10.51173/jt.v5i2.1227","DOIUrl":"https://doi.org/10.51173/jt.v5i2.1227","url":null,"abstract":"Appropriate design of Multi-Port Converter (MPC) topology helps to overcome the difficulties of combining numerous renewable energy sources (RES). In this article, a comprehensive analysis of these MPCs in terms of their topologies, operating principles, various dependability, and overall efficacy is offered. There are two main types of MPCs which are non-isolated and isolated MPCs being coupled in parallel and series configurations to function as multi-input converters. These MPCs can flow the load power in one or both directions for the RES or BESS (battery energy storage system) applications. The non-isolated MPCs are most used in the latest years but they have some limitations such as small voltage gain, and failure in isolation. The isolated MPC is more effective than the non-isolated ones in terms of isolation between the input power stage and output but has some drawbacks such as the high cost, and large size of the high-frequency transformer (HFT). In this review paper, a high-efficiency voltage-regulator/battery energy storage system (VR-BESS) was presented as a multi-port DC-DC converter for the standalone PV (photovoltaic) array. This converter has fewer switches, is cheaper, and is more dependable than its counterparts.","PeriodicalId":39617,"journal":{"name":"Journal of Biomolecular Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72771152","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

Article Watch: July, 2023. 文章观察：2023年7月。

Journal of Biomolecular Techniques Pub Date : 2023-06-21 eCollection Date: 2023-07-01 DOI: 10.7171/3fc1f5fe.a1ffb4ab

Clive Slaughter

引用次数: 0

Mechanical Properties of Multi-Layer Woven E-Glass/Epoxy in Variable Fiber-Mat Directions 变纤维毡方向下多层编织e -玻璃/环氧树脂的力学性能

Journal of Biomolecular Techniques Pub Date : 2023-06-14 DOI: 10.51173/jt.v5i2.1176

Saif Aldeen Ghafel H., Nasri Salh M. Namer, Abdul Jabbar H. Ali

{"title":"Mechanical Properties of Multi-Layer Woven E-Glass/Epoxy in Variable Fiber-Mat Directions","authors":"Saif Aldeen Ghafel H., Nasri Salh M. Namer, Abdul Jabbar H. Ali","doi":"10.51173/jt.v5i2.1176","DOIUrl":"https://doi.org/10.51173/jt.v5i2.1176","url":null,"abstract":"In this research, the epoxy resin was reinforced by (16 layers) of E-glass fiber woven mat (0^°/90^°) with 50% weight fraction and total thickness (3mm). Using 16 layers was due to the absence of any previous study that used this number of layers at this thickness. It is considered a modern study of this style because of the rapid development in modern engineering industries that required lightweight composite materials with high strength and small thickness, which are used in the aerospace industry aviation and other precision engineering industries. The composite material was cut into angles (0^°,5^°,15^°,30^°,45^°) by using CNC water jet culling machine. The tensile test was used to determine the strength of a material ratio to the fiber's direction and by using Vickers hardness to determine the hardness of composite and pure epoxy. The result of pure epoxy (matrix) has the lowest value in tensile strength (σ_UTS), Yong's modulus (E), 0.2% proof yield stress (σ_(0.2%)), modulus of toughness and toughness when compared with a composite material with adding 16 layers of \"E-glass fibers\". The direction of the fibers with (5^°) of composite has the highest strength, Young's modulus, and 0.2% proof yield stress when compared with (0^°,15^°,30^°,45^°) and pure epoxy. The improvement strength (10.8, 11.8, 9.8, 8.5, 8.3 times) at (0^°,5^°,15^°,30^°,45^°) respectively when compared with pure epoxy. The hardness of composite material improved (220%) relative to pure epoxy. The results show that the best improvement of composite material with fiber's angle (5^°) has the highest results compared with pure epoxy.","PeriodicalId":39617,"journal":{"name":"Journal of Biomolecular Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86780204","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

Grid-Connected PV System for 324 kW with Improved Maximum PowerPoint Tracking 改进最大ppt跟踪的324千瓦并网光伏系统

Journal of Biomolecular Techniques Pub Date : 2023-06-10 DOI: 10.51173/jt.v5i2.726

A. H. Khariy, Ahmed R. Ajel, S. Gharghan, Noaman Mohammad Noaman

引用次数: 0

Modelling and Estimation of Interior Orientation of Non-Metric Cameras using Artificial Intelligence 基于人工智能的非公制相机内部方位建模与估计

Journal of Biomolecular Techniques Pub Date : 2023-06-10 DOI: 10.51173/jt.v5i2.950

Hasanain A. Ajjah, Ahmed Alboabidallah, M. U. Mohammed, Awesar A. Hussain

{"title":"Modelling and Estimation of Interior Orientation of Non-Metric Cameras using Artificial Intelligence","authors":"Hasanain A. Ajjah, Ahmed Alboabidallah, M. U. Mohammed, Awesar A. Hussain","doi":"10.51173/jt.v5i2.950","DOIUrl":"https://doi.org/10.51173/jt.v5i2.950","url":null,"abstract":"With the advancement of low-cost digital cameras and their widespread, especially in smartphones, these cameras are not designed for photogrammetry applications. The main aim of this study is to model and estimate the interior orientation parameters (IOPs) for images captured by volunteer-run cameras using artificial intelligence. These cameras were unavailable to perform traditional calibration processes or use images from unknown sources for image measuring. Estimating IOPs using random values within the range determined by testing the selected sample's consistency. Optimization was performed by Utilizing the Simulated Annealing algorithm based on stereo calibration to obtain the best possible values of these parameters that produce the minimum RMS-reprojection error attained. By The variance between the parameters from the pre-calibration process and estimated by an artificial intelligence system, The coefficient of determination in the IOPs (focal length R2 = 0.717 to 0.812, principal point (X, Y) R2 = (0.674 to 0.869, 0.504 to 0.613), Both radial and tangential coefficients, R2 was close to zero). Therefore, the estimations of radial distortions k1, k2, and tangential distortions p1 and p2 are invalid. A reasonably strong relationship between principal distance and principal point with low lens distortion parameters due to the significant relative differences between the distortion parameters, sufficient strength of the relationship between calculating parameters, and estimating according to accuracy tolerance in photogrammetry applications.","PeriodicalId":39617,"journal":{"name":"Journal of Biomolecular Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76295922","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