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Showing posts from October, 2024

Exploration of the functional constituents of the substrate of flammulina velutipes

HIGHLIGHTS What: This study provides a strong theoretical foundation and practical guidance for developing medicinal and functional products based on the SFV. Who: Ruixiang Jiang and colleagues from the (UNIVERSITY) have published the Article: Exploration of the Functional Constituents of the Substrate of Flammulina velutipes, in the Journal: Separations 2024, 311 of /2024/ How: NMR Analysis 1 H NMR and 13 C NMR spectral data were obtained using a nuclear magnetic reso- nance spectrometer (JNM-ECZL 600 MHz JEOL Ltd []. The results indicated that the contents of the 281.54 mg/kg 33.85 mg/kg and 713.42 mg/kg . SUMMARY Four phenolic acids and one flavonoid isolated from the SFV were analyzed quantiFour phenolic acids flavonoid isolated the were quantitaphenolic acids and and one on. flavonoid isolatedfrom from theSFV SFV wereanalyzed analyzed quantitatively using the HPLC method The constituents mentioned have five compounds in the SFV were as follows: 218.88 mg/kg, 157.3...

Energy management strategies of pv-battery/supercapacitor system for electric vehicles

HIGHLIGHTS What: This study focuses on a HESS model based on a parallel full-active configuration that integrates a (Li-ion) battery with a supercapacitor connected by two bi-directional converters are suitable options to power supply an electric vehicle. Who: DC-DC converter and collaborators from the LITE Laboratory, Department of Transport Engineering, Mentouri Brothers University Constantine, Constantine , have published the research work: Energy Management Strategies of PV-Battery/Supercapacitor System for Electric Vehicles, in the Journal: (JOURNAL) of 23/07/2024 Future: Future work will further study the EV with variable load (taking road profile into consideration) with variable irradiance profile to ensure that the HESS is efficient to store the excess of energy and participate efficiently in each considered condition. electric vehicle with four different charging system. SUMMARY The startling state of global warming forces the complete implementation of a tra...

Review of low voltage ride-through capabilities in wind energy conversion system

HIGHLIGHTS What: Nonetheless, this study has pinpointed a gap in data pre-processing techniques within the domain that necessitates additional exploration in the future. The aim of the research was to present a thorough evaluation of control strategies utilized to enhance ESS coordination in the context of a hybrid energy storage system (HESS), thereby streamlining the integration of RESs into the power grid. The aim of establishing grid codes is to guarantee the grid`s stability and consistent operation . The first category pertains to alterations made to the hardware, while the second category pertains to adjustments made to the traditional controllers for the converters of DFIG This study focuses on both traditional controllers and hardware. Who: MDPI from the Department of Power Engineering, Durban University of Technology, Durban, South Africa have published the paper: Type of the Paper (Article, in the Journal: Energies 2024, 17, 5321. of /2024/ How: This article pre...

Ai-based smart real-time pv panels soiling recognizing system using deep neural network framework on nvidia jetson nano embedded gpu

HIGHLIGHTS What: This study provides a clear direction for future research interested in applying machine_learning techniques to improve the reliability and maintenance of PV systems. The aim of the object detection target is to identify and classify visual objects in images or videos. In the context of this research paper, the object detection methods employed are based on the YOLOv8 algorithm proposed in a previous research work . The authors propose several architectural reforms and a series of enhancements, collectively known as a bag-of-freebies, to improve model performance. Who: YOLOv and colleagues from the Laboratory of Advanced Systems Engineering National School of Applied Sciences, Ibn Tofail, have published the research work: AI-Based Smart Real-Time PV Panels Soiling Recognizing System Using Deep Neural Network Framework on NVIDIA Jetson Nano Embedded GPU, in the Journal: (JOURNAL) of 27/Dec/2023 How: This research paper introduces a novel solution to this is...

Towards a consensus method for the isolation of microplastics from freshwater sediments

HIGHLIGHTS What: This work compared methods for the recovery of microplastics from freshwater sediments based on density separation by flotation followed by digestion of organic matter. With no methodological consensus yet reached, the aim of this study was to contribute to the development of optimized analytical approaches for the isolation of microplastics from freshwater sediment by carrying out a systematic investigation of both the density flotation and the organic matter removal steps. The overall goal was to obtain a protocol that gave the highest microplastic recovery and most effective organic matter removal with minimal damage to the plastic particles. Fine play-pit sand was used to simulate sediment in the investigation of flotation, and peat was used as a representative natural organic material for the comparison of digestion methods. Who: Daniel E. Enenche and colleagues from the Department of Pure and Applied Chemistry, University of Strathclyde, Cathedral Stre...

Comprehensive analysis of improved hunter–prey algorithms in mppt for photovoltaic systems under complex localized shading conditions

HIGHLIGHTS What: In this research an MPPT control strategy grounded in an improved Hunter-Prey Optimization (IHPO) algorithm is proposed. This study proposes a new control method. The contributions of this article are delineated as follows: an improved hunter-prey search algorithm is proposed, integrating a spiral search strategy during hunter foraging. Who: Zhuoxuan Li and colleagues from the Department of Electrical and Electronic Engineering, Imperial College London, London , AZ, UKCollege of Mechanical and Electrical Engineering, Shihezi University, Shihezi, China have published the research: Comprehensive Analysis of Improved Hunter-Prey Algorithms in MPPT for Photovoltaic Systems Under Complex Localized Shading Conditions, in the Journal: Electronics 2024, 13, 4148. of 10/09/2024 SUMMARY In contrast, the other three control methods display smoother tracking behavior after reaching a steady_state. To further characterize the results, additional data indicators, such...

The feasibility of egypt`s photovoltaic industry drawing on china`s successful experience

HIGHLIGHTS What: This study aims to evaluate the feasibility of Egypt`s photovoltaic industry drawing on Firstly based on Egypt`s national conditions and actual situation the current situation development potential and challenges faced by the Egyptian photovoltaic market were analyzed.Egypt`s economic foundation remains less competitive with outdated electricity infrastructure and long-term dependence on natural gas posing challenges to its transformation. The investment return cycle of the photovoltaic industry is about 10 years, and the stability of policies is the main reason for the flourishing development of the photovoltaic industry in China, the United_States, and Germany. Who: China`s Successful, Experience and Jingyi, Zhang from the The High School Affiliated to Renmin University of China, Beijing, China have published the article: The Feasibility of Egypt`s Photovoltaic Industry Drawing on China`s Successful Experience, in the : Proceedings of the 2nd International...

Wideband half-elliptical ring slot array loaded leaky wave antenna on a half-mode corrugated substrate integrated waveguide

HIGHLIGHTS What: The paper is divided as follows: Section II describes the half-mode CSIW and the antenna design; Section III describes the simulated results, followed by Conclusions in Section IV. The paper describes a half-mode corrugated substrate integrated waveguide (HM-CSIW) as an alternative for traditional SIWs to replace vias with stub corrugations. Who: PitStopService from the Corrugated Substrate Integrated Waveguide”Loughborough UniversityWolfson School of Mechanical, Electrical, and Manufacturing Engineering, Loughborough University, UK have published the research: Wideband half-elliptical ring slot array loaded leaky wave antenna on a half- mode corrugated substrate integrated waveguide, in the Journal: (JOURNAL) How: -This paper presents a leaky-wave antenna with elliptical ring slot array loaded on a half-mode corrugated substrate integrated waveguide (HM-CSIW) operating at 25 to 36.5 GHz. SUMMARY Leaky wave antennas (LWA) are very popular in the litera...

Anion and cation co-doping of nio for transparent photovoltaics and smart window applications

HIGHLIGHTS What: The authors proceeded in a combinatorial and selective double doping of NiO in an attempt to enhance further the photovoltaic output characteristics of the transparent NiO/TiO2 heterostructure. Who: Chrysa Aivalioti and collaborators from the Department of Materials Science and Engineering, University of Crete, POBox, Heraklion, Greece have published the paper: Anion and Cation Co-Doping of NiO for Transparent Photovoltaics and Smart Window Applications, in the Journal: Crystals 2024, 14, 629. of /2024/ Future: More experiments along with theoretical modeling are required to clarify and confirm the correlation between the structural defects and the indirect band gap of NiO-based films as determined from Tauc plots . SUMMARY All-oxide NiO-based ultraviolet photovoltaics (UV-PVs) have been reported for NiO/TiO2 and NiO/ZnO. Heat treatments up to 600 ◦ C have been employed, dopants like N in TiO2 or Nb in NiO have been used or suitable interlayers have be...

Can europe recover its photovoltaic manufacturing capacity?

HIGHLIGHTS What: Figure 2 below illustrates the changing dynamics of the global PV market, and the influence of the Chinese PV market, 2 For the purpose of this report, IEA PVPS countries are those that are either member in their own right or through the adhesion of the EC. but also the fast pace of growth in India and emerging countries. Who: Melodie de l`Epine from the Japan Japan have published the Article: Snapshot of Global PV Markets -, in the Journal: (JOURNAL) of 23/04/2023 Future: Repowering is still relatively unusual given the age of the oldest installations but it is expected to increase in the near future – serial defects with backsheets manufactured in the period 2009 – 2011 is a good example as the past 2 years have seen a few hundred MW replaced. As penetration rates increase new governance models compatible with market and climate policy driven deployment targets will need to be established to ensure PV can be smoothly deployed. SUMMARY Fc PVPS Task 1 ...

Energy management in hybrid pv-wind-battery storage-based microgrid using droop control technique

HIGHLIGHTS What: The paper presents an efficient energy management system designed for a small-scale hybrid microgrid incorporating wind solar and battery-based energy generation systems using the droop control technique. The aim of the energy management system is to maintain power balance within the microgrid even in the face of fluctuations in renewable energy generation and load demand. The model described provides a simplified yet effective representation of battery behavior, allowing engineers to gain insights into battery performance and improve system efficiency and reliability. Who: SARATH from the Department of Electrical Engineering, Radhakrishna Institute of Technology and Engineering, Bhubaneswar, Odisha, IndiaCollege of Engineering and Technology, Srinivas University, Mangalore have published the research work: www.journalimcms.org No.-10 (2024) 66October, in the Journal: (JOURNAL) How: The following steps are presented below to design a hybrid microgrid.. S...

The illusion of a green transition in slovenia by 2050

HIGHLIGHTS What: The aim of this article is not to predict the energy consumption in Slovenia in 2050 as accurately as possible, but to provide a realistic assessment of what the Slovenian energy system would look like in 2050 if fossil and nuclear fuels are abandoned (and technologically mature RES technologies are used). The article shows the increase in the use of renewable resources in Slovenia to the extent that fossil and nuclear resources could be replaced by 2050. Who: Senegačnik and collaborators from the University of Ljubljana, Faculty of Mechanical Engineering, Slovenia have published the Article: Original Scientific Paper The Illusion of Green Transition in Slovenia by, in the Journal: (JOURNAL) of September/23,/2023 Future: In principle CO2 could be captured from the emissions of industrial processes e_g in the production of lime and cement (for which the use of electricity and hydrogen is envisaged in the future). In the International Energy Agency (IEA) rep...

The impact of ambient weather conditions and energy usage patterns on the performance of a domestic off-grid photovoltaic system

HIGHLIGHTS What: To address this gap, this study investigates the impact of ambient weather conditions and energy usage patterns on the performance of an off-grid building-integrated photovoltaic (BIPV) system. Who: Iviwe Mcingani et al. from the Physics Department, University of Fort Hare, Private Bag, Alice, South Africa have published the research work: The Impact of Ambient Weather Conditions and Energy Usage Patterns on the Performance of a Domestic Off-Grid Photovoltaic System, in the Journal: Energies 2024, 5013 of /2024/ How: Meteorological and electrical data from August and November are analyzed to assess the winter and summer performance of the BIPV system using the IEC 61724 standard. SUMMARY The results revealed an annual total output energy of 194.79 kWh/m2 for the PV module, a PR of 79.2%, and a CUF of 13.4%. Daily average energythe solar PV and2 ba ery power and energy in response to the solar 8.53 kWh 4.567 kWh 3.44 kWh 4.49 kWh 4.62 kWh/m radiation (p...

Flexible electromagnetic sensor with inkjet-printed silver nanoparticles on pet substrate for chemical and biomedical applications

HIGHLIGHTS What: For this article a low-cost compact and inkjet-printed electromagnetic sensor was investigated for its chemical and biomedical applications. In this article, an economical, compact, contactless, and flexible electromagnetic sensor was presented, which was used to detect and estimate variation in concentrations of chemicals (ethanol and methanol) and biochemicals (hydrocortisone – a chemical derivative of cortisol, a biomarker of stress and cardiovascular effects). Who: Muhammad Usman Ejaz and colleagues from the Dyson Institute of Engineering and Technology, Malmesbury , RP, UK School of Electronic Engineering and Computer Science, Queen Mary University of London have published the Article: Flexible Electromagnetic Sensor with Inkjet-PrintedSilver Nanoparticles on PET Substrate for Chemical andBiomedical Applications, in the Journal: Sensors 2024, 24, 6526. of /2024/ How: When the sample under investigation is introduced into the sensing device a change in...

Medium- and long-term distributed photovoltaic power prediction based on multiple time series feature and multiple-model fusion

HIGHLIGHTS What: The authors propose a series feature and multiple-model ensemble learning model for and distributed photovoltaic power (M2E-DPV). Who: Xinting Yang and colleagues from the Department of Electrical Engineering, Tsinghua University, Beijing, China have published the paper: Medium- and Long-Term Distributed Photovoltaic Power Prediction Based on Multiple Time Series Feature and Multiple-Model Fusion, in the Journal: Sustainability 2024, 8806 of 30/03/2023 How: In this model CNNs were used to extract variable features while a genetic algorithm optimized the hyperparameters of the LSTM network . Considering the volatility of photovoltaic power and the differences in data distributions in different areas multiple types of features are designed such as fixed period features dynamic features local volatility features and associated meteorological auxiliary features. To address the difficulties of a large time span in medium- and long-term distributed photovoltaic ...

Quantifying the shading effects of a small-scale rooftop-installed linear fresnel reflector in cyprus

HIGHLIGHTS What: In order not to overload the main body of the present paper, height configurations of 1.5 m, 2.5 m, and 3.5 m are presented in Appendix B. This study shall be completed with a transient thermal analysis to validate the work conducted in this paper in a purely optical environment, as discussed in the previous section. Who: Alaric Christian Montenon et al. from the (UNIVERSITY) have published the research work: Quantifying the Shading Effects of a Small-Scale Rooftop-Installed Linear Fresnel Reflector in Cyprus, in the Journal: Energies 2024, 17, 3269. of /2024/ How: The work was conducted using the Tonatiuh++ ray-tracing software to determine the annual radiation blocking. SUMMARY The structure of a collector itself is a radiation blocker that has an indirect effect on the ground or on the roof where it is installed. This may lead to the attenuation of heating by solar radiation in the summer, but also the loss of the heating benefit granted by solar ra...

Fabrication of versatile fe3o4/go/au composite nanomaterial as sers-active substrate for detection of pesticide residue

HIGHLIGHTS What: In the study, a three-layer of multifunctional Fe3O4/GO/Au composite nanomaterial with high hot spot was designed and prepared as a reinforced matrix. Who: Mancozeb et al. from the Shaanxi University of Technology https://orcidorg/0000-0002-0195, have published the research work: Fabrication of Versatile Fe3O4/GO/Au Composite Nanomaterial as SERS-active Substrate for Detection of Pesticide Residue, in the Journal: (JOURNAL) SUMMARY Compared with ordinary metal NPs, magnetic nanoparticles (MNPs) can achieve rapid and efficient separation and enrichment by applying an external magnetic_field after adsorbing the target material (Zheg et_al 2021). To achieve rapid and sensitive detection of pesticide residues in food, the project designed and constructed a three-layer of multi-functional SERS composite substrate, Fe3O4/GO/Au, as depicted in Scheme 1. Based on the excellent properties of Fe3O4/GO/Au above, mancozeb in aqueous solution was directly detected. C...

Impact of solar radiation on luminaires and energy efficiency in isolated residential photovoltaic systems

HIGHLIGHTS What: The primary focus of this study underscores the presence and significance of interharmonic generation in an isolated photovoltaic system, primarily designed for fluorescent lighting installation in a residential setting under varying solar irradiance conditions. Case Studies and Results This study was conducted in a residential setting housing a family of four, with fluThis study installed was conducted in ina various residential setting housing a family of four, with orescent luminaires as linear loads living spaces within the residence. fluorescent luminaires installed as linear loads in various living spaces within the residence. The experiments were carried out on 2 the maximum solar irradiance was calculated to reach 1300 W/m. In the first case, the authors conducted an analysis of the energy efficiency of luminaires Who: Jaime Jalomo-Cuevas and collaborators from the Institute of Materials Technology, Universitat Politècnica de València, Valencia, Spai...

Thermodynamics-informed neural networks for the design of solar collectors: an application on water heating in the highland areas of the andes

HIGHLIGHTS What: The authors propose using physics-informed neural networks (PINNs) to predict optimal design conditions in a range of data that not only characterized the highlands of Ecuador but also similar geographical locations. The outcomes of this study are anticipated to extend beyond theoretical contributions, opening scope to practical applications and design frameworks that can be implemented within a similar Ecuadorian context and that could serve for solar collector studies , thereby exemplifying a tailored approach to renewable energy design methods. These models integral to the models described inneural the previous sections . The outcomes of this study have several practical applications. Who: Mauricio Cáceres and colleagues from the (GIEMA), Facultad Ciencias have published the article: Thermodynamics-Informed Neural Networks for the Design of Solar Collectors: An Application on Water Heating in the Highland Areas of the Andes, in the Journal: Energies 2024,...