The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment最新文献

{"title":"Effect of Sn Doping on the Photocatalytic Properties of ZnO","authors":"F. Boufelgha, rahima zellagui, M. Benachour, H. Dehdouh, F. Labrèche, Nourddine Brihi","doi":"10.3390/psf2023006007","DOIUrl":"https://doi.org/10.3390/psf2023006007","url":null,"abstract":": In this work, we synthesized solutions of un-doped ZnO and ZnO doped with tin (Sn) by the sol-gel method. From these solutions, we deposited thin layers on glass substrates by the spin-coating technique. The main purpose of this work is to study the influence of the incorporation of Sn into the ZnO matrix on the photocatalytic properties of the latter. The crystal structure is hexagonal with a preferential orientation of the crystallites (002), and the reduction in the size of the grains is observed from 21 nm for the un-doped ZnO to 15 nm for the doped ZnO. For both samples, the transparency in the visible region is high and exceeds 75%, and a slight change in the band gap is from 3.22 to 3.23 eV, i.e., it is attributed to a combination of the Burstein–Moss effect and electron-impurity scattering. The methylene blue UV photocatalysis test gives a degradation rate of 40% for un-doped ZnO and 60% for Sn-doped ZnO (2%). This study confirms the remarkable influence of Sn doping on the photocatalytic properties of ZnO and also on its morphological and optical properties.","PeriodicalId":383573,"journal":{"name":"The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132003154","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":"Robust Frequency-Decoupling-Based Power Split of Battery/Supercapacitor Hybrid Energy Storage Systems in DC Microgrids","authors":"M. A. Hartani, M. Hamouda, O. Abdelkhalek, Aissa Benhamou, Bouchaib Ali, S. Mekhilef","doi":"10.3390/psf2023006006","DOIUrl":"https://doi.org/10.3390/psf2023006006","url":null,"abstract":": A frequency-decoupling-based power split was used in this study to manage a direct-current microgrid (DC-MG)-based PV and hybridized energy storage system (HESS), which consisted of a battery and a supercapacitor. The HESS control integrated a dual-loop structure for bus voltage regulation and recovery and HESS charge/discharge control. Hysteresis current control (HCC) tracked the supercapacitor setpoint current using low-pass filtering (LPF) control. The system reliability was assessed using pulsing, smooth, and disturbed PV and load waveforms with standard and advanced LPF methods. The Matlab simulation results confirmed a superior HESS control performance under varying resource waveforms. Key performance indexes (KPIs) were used to evaluate the bus voltage, HESS current management","PeriodicalId":383573,"journal":{"name":"The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129881260","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":"Impact of Artificial Intelligence in Renewable Energy Management of Hybrid Systems","authors":"Benhammou Aissa, Tedjini Hamza, Guettaf Yacine, Hartani Mohammed Amine","doi":"10.3390/psf2023006005","DOIUrl":"https://doi.org/10.3390/psf2023006005","url":null,"abstract":"","PeriodicalId":383573,"journal":{"name":"The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132053113","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":"Development of a Mathematical Model Based on an Artificial Neural Network (ANN) to Predict Nickel Uptake Data by a Natural Zeolite","authors":"Boukhari Mehdi, Daouia Brahmi-Ingrachen, H. Belkacemi, L. Muhr","doi":"10.3390/psf2023006004","DOIUrl":"https://doi.org/10.3390/psf2023006004","url":null,"abstract":"","PeriodicalId":383573,"journal":{"name":"The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124922051","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":"Methods and Interests of Bioelectric Impedance in Medical Practice","authors":"Lotfi Rahal","doi":"10.3390/psf2023006003","DOIUrl":"https://doi.org/10.3390/psf2023006003","url":null,"abstract":"The development of new tools of functional explorations in medicine revolutionized the means of the diagnosis of different pathologies and allowed a clear improvement of the patients’ management. Bioelectric impedance (BI) is a body analysis method in full expansion that is nowadays applied in routine clinical practice by various medical specialties. The study of body composition by bioelectric impedance analysis (BIA) not only allows a better understanding of the pathophysiology of many diseases but also, in some cases, traces their evolution in order to guide treatments [1,2]. BIA is based on the generation of a continuous electric current of low intensity (≤1 mA; 50 kHz) through two electrodes (outer electrodes) and the measurement of the voltage by two other electrodes (inner electrodes) fixed in the upper and the lower limb on the same side of the body [2]. Resistance (R) is calculated from the impedance (ZB) expressed by different tissues, and the evaluation of the different parts of the body composition is based on predefined equations [2]. Usually, in clinical practice, simple measurements are used (body mass index: BMI; waist circumference: WC; hip circumference: HC; waist-to-hip ratio: WHR, etc.) to estimate the level of overweight; however, their limitations are important, hence the interest in using other more precise methods such as BI, which allows a more detailed analysis of the body composition by evaluating the proportion of fat mass (FM) and fat free mass (FFM) or lean mass, the total body water (TBW), the basal metabolic rates (BMR), and the estimated average (energy) requirement (EAR) [2]. Impedance corresponds the resistance offered by a tissue (biological conductor) relative to the passage of a low intensity alternating current; this impedance is a function of the body’s water content as well as the frequency of the applied alternating current signal. In the human body, the FFM, due to electrolytes dissolved in water, is a good conductor of electricity compared to the FM, and the principle of BIA is therefore to measure the body’s water and deduce the amount of FFM, assuming a constant hydration factor (usually 73%, hence the following: FFM = TBW/0.73) [3,4]. The FM is obtained in a second step by calculating the difference with the total body weight (considering the two-compartment model) [5]. The BIA also assessed skeletal muscle mass and appendicular muscle mass, which are the main parameters in the screening of sarcopenia. Moreover, the interpretation of the level of the body’s hydration is based on the clinical context: states of intraand extracellular hydration, the presence of a third sector in case of edemas, etc. [3]. Other parameters, such as the impedance ratio (impedance measurements at high and low frequencies: Z200/Z5) and phase angle (time measured in degrees when phase shift between current and voltage occurs), are also useful and practical tools in the monitoring and evaluation of performance in athletes and","PeriodicalId":383573,"journal":{"name":"The 1st International Conference on Physics of Semiconductor Devices, Renewable Energies and Environment","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122097066","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}