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Technologies Behind the Smart Grid and Internet of Things: A System Survey

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Computers, Materials & Continua 2023年第6期75卷 5049-5072页

作者： Kuldeep Sharma Arun Malik Isha Batra A.S.M.Sanwar Hosen md abdul Latif Sarker Dong Seog Han Department of Computer Science and Engineering Lovely Professional UniversityPunjabIndia Department of Artificial Intelligence and Big Data Woosong UniversityDaejeon34606Korea Center for ICT&Automotive Convergence Kyungpook National UniversityDaegu41566Korea School of Electronics Engineering Kyungpook National UniversityDaegu41566Korea

Electric smart grids enable a bidirectional flow of electricity and information among power system *** proper monitoring and con-trolling of power quality,reliability,scalability and flexibility,there is a need for an environmentally friendly system that is transparent,sustainable,cost-saving,energy-efficient,agile and *** paper provides an overview of the emerging technologies behind smart grids and the internet of *** dependent variables are identified by analyzing the electricity consumption patterns for optimal utilization and planning preventive maintenance of their legacy assets like power distribution transformers with real-time parameters to ensure an uninterrupted and reliable power *** addition,the paper sorts out challenges in the traditional or legacy electricity grid,power generation,transmission,distribution,and revenue management challenges such as reduc-ing aggregate technical and commercial loss by reforming the existing manual or semi-automatic techniques to fully smart or automatic *** article represents a concise review of research works in creating components of the smart grid like smart metering infrastructure for postpaid as well as in prepaid mode,internal structure comparison of advanced metering methods in present scenarios,and communication systems.

关键词： Electricity consumption bidirectional advanced meter infrastructure energy internet of things smart grid smart meter

Organic Amendments Improve Plant Morpho-Physiology and Antioxidant Metabolism in Mitigating Drought Stress in Bread Wheat(Triticum aestivum L.)

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Phyton-International Journal of Experimental Botany 2022年第9期91卷 1959-1972页

作者： Taufika Islam Anee md.Nur Nabi Islam Mohamed M.Hassan abdul Awal Chowdhury Masud md.Mahabub Alam Mirza Hasanuzzaman Department of Agronomy Faculty of AgricultureSher-e-Bangla Agricultural UniversityDhaka1207Bangladesh Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia

Due to the unpredictable climate change,drought stress is being considered as one of the major threats to crop ***(Triticum aestivum *** Gom-26)being a dry season crop frequently faces scarcity of water and results in a lower ***,this experiment aims to explore the role of different organic amendments(OAs)in mitigating drought stress-induced *** pot experiment consisted of different organic amendments ***,vermicompost and poultry manure@0.09 kg m^(−2)soil,biochar@2.5%w/w soil and chitosan@1%w/w soil which was imposed on the plants grown under both well-watered and drought *** showed that drought stress reduced plant height(15%),SPAD value(16%),relative water content(13%),number of spikelet spike^(−1)(17%),number of grains spike^(−1)(12%),and 100-grain weight(18%).Organic amendments act as a protectant and reduce drought stress-induced damages by enhancing the morpho-physiological and yield *** enhanced SPAD value by 18%,number of spikelets spike^(−1)by 20%,number of grains spike^(−1)by 17%,whereas poultry manure increased plant height by 16%under drought condition compared to control *** other OAs applied,vermicompost was proved to be capable of reducing the higher lipid peroxidation and proline content raised by drought *** stress-induced increment of catalase,ascorbate peroxidase and glutathione reductase activities were also efficiently modulated by the organic amendment *** present study concluded that OAs play significant roles in alleviating drought stressinduced damages by improving the morpho-physiological attributes and among the different types of OAs used vermicompost performed better which in addition ceased the production of reactive oxygen species.

关键词： Antioxidant defense biochar cereal crop chitosan compost poultry manure reactive oxygen species vermicompost

Physical, Thermal and Mechanical Properties of Areca Fibre Reinforced Polymer Composites – An Overview

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Journal of Bionic Engineering 2020年第1期17卷 185-205页

作者： Tamil Moli Loganathan Mohamed Thariq Hameed Sultan Mohammad Jawaid Ain Umaira md Shah Qumrul Ahsan Manohar Mariapan Mohd Shukry bin abdul Majid Department of Aerospace Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia Laboratory of Biocomposite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia Aerospace Malaysia Innovation Centre(944751-A) Prime Minister's DepartmentMIGHT Partnership HubJalan Impact63000 CyberjayaSelangor Darul EhsanMalaysia Faculty of Manufacturing Engineering Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100 Durian TunggalMelakaMalaysia Department of Science Park and Recreation Faculty of ForestryUniversiti Putra Malaysia43400 UPM SerdangSelangor Darul EhsanMalaysia School of Mechatronic Engineering Universiti Malaysia PerlisPauh Putra Campus02600 ArauPerlisMalaysia

Areca catechu,is a species of palm belonging to the family of Arecaceae/Palmae,grows vertically,to the height of 10 m to 20 m,the stem is straight,solitary and slender,10 cm to 15 cm in diameter,with marks of annulated scars of fallen leaf *** fibres are predominantly extracted not only from the fruit as areca husk,but also from leaf stalks and *** this review paper,areca fibre is compared with those of other representative species of the Arecaceae/Palmae family,such as the coconut tree and the palm tree,in terms of physical and mechanical *** review article also discusses the physical,mechanical and thermal properties of areca fibre and its *** review of known published data reveals that,while areca fibre has the potential to be used as an alternative reinforcement in polymer ***,it has been also noticed that some other species from the family of Arecaceae/Palmae have not been explored as natural fibre reinforcement in polymer composites either,thus revealing further options of natural alternative reinforcement to be investigated with regard to their potential to be used in fibre based composites for the automotive,aerospace,and construction industries.

关键词： natural fibres areca mechanical properties surface treatment hybrid composites

Assessment of heavy metal contamination in the sur?cial sediments from the lower Meghna River estuary, Noakhali coast, Bangladesh

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International Journal of Sediment Research 2021年第3期36卷 384-391页

作者： Mohammad abdul Momin Siddique Mahfuzur Rahman Shahriar md.Arifur Rahman md.Rubel Hassan Zeenath Fardous Muhammed Alamgir Zaman Chowdhury Mohammad Belal Hossain Department of Oceanography Noakhali Science and Technology University Agrochemical and Environmental Research Division Institute of Food and Radiation Biology Atomic Energy Research Establishment 5. Department of Fisheries and Marine Science Noakhali Science and Technology University Department of Environmental Science and Disaster Management Noakhali Science and Technology University University of South Bohemia in Ceske Budejovice Faculty of Fisheries and Protection of Waters South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses Research Institute of Fish Culture and Hydrobiology

Sediment samples were collected from ten selected sites of the lower Meghna River estuary, and six heavy metals were analyzed with Atomic Absorption Spectrophotometry(AAS) to assess the contamination level and the metals’ association with sediment grain size. The current results revealed that the mean concentrations of the studied metals were ranked in descending order of iron(Fe)(1.29 ? 103 mg/kg) > zinc(Zn)(42.41 mg/kg) > lead(Pb)(12.48 mg/kg) > chromium(Cr)(10.59 mg/kg) > copper(Cu)(6.22 mg/kg) > cadmium(Cd)(0.28 mg/kg). The geo-accumulation, contamination, and pollution load indexes suggested that the lower Meghna river estuary was not contaminated by Fe, Zn, Pb, Cr, and *** mean size of the sediment ranged from 28.92 to 126.2 mm, and the Pearson correlation coefficient showed a significant association between Fe and Pb(coefficient of determination, r2? 0.836; p < 0.05),and no significant correlation was found between individual metals and grain size, indicating no or low influence on the metals distribution.

关键词： Metal pollution Pollution load index Grain size Trace metals

Central retinal artery occlusion and optic neuropathy secondary to platelet rich plasma injection:a case report

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International Journal of Ophthalmology(English edition) 2021年第6期14卷 945-947页

作者： Norashikin Maslan Wan Haslina Wan abdul Halim Norshamsiah md Din Seng Fai Tang Department of Ophthalmology Universiti Kebangsaan Malaysia Medical Centre(UKMMC)Cheras 56000Kuala LumpurMalaysia

Dear Editor.I am *** Maslan,from the Department of Ophthalmology of University Kebangsaan Malaysia Medical Centre in Kuala Lumpur,Malaysia.I am writing to present a case report on central retina artery occlusion(CRAO)... 详细信息

关键词： injection Malaysia neuropathy

Physico-chemical parameters for the assembly of moxifloxacin hydrochloride and cetyltrimethylammonium chloride mixture in aqueous and alcoholic media

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Chinese Journal of Chemical Engineering 2023年第5期57卷 280-289页

作者： Arnop Dutta md.Tuhinur R.Joy Sk.md.Ali Ahsan Mansour K.Gatasheh Dileep Kumar Malik abdul Rub md.Anamul Hoque Mohammad Majibur Rahman Nasrul Hoda D.M.Shafiqul Islam Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Chemistry Jashore University of Science and TechnologyJashore 7408Bangladesh Department of Biochemistry College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia Laboratory for Chemical Computation and Modeling Institute for Computational Science and Artificial IntelligenceVan Lang UniversityHo Chi Minh CityViet Nam Faculty of Applied Technology Van Lang UniversityHo Chi Minh CityViet Nam Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah 21589Saudi Arabia Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Environmental Sciences Jahangirnagar UniversitySavarDhaka 1342Bangladesh Department of Neurology Henry Ford Health SystemDetroitMI 48292USA

The aggregation behavior of the mixture of cetyltrimethylammonium chloride(CTAC), a cationic surfactant, and moxifloxacin hydrochloride(MFH), a fourth-generation fluoroquinolone antibiotic drug, has been studied using the conductivity technique in aqueous and alcoholic(EtOH, 1-PrOH, and 2-BuOH)media. The study was performed at several temperatures between 298.15 and 323.15 K at 5 K *** assembly has been characterized by evaluating the micellar parameters, such as the critical micelle concentration(CMC) and the counter ion binding(β), of the CTAC + MFH mixture. The values of the CMC for the assembly of the CTAC + MFH mixture were reliant on the composition of alcohols in the mixed solvents and the temperature. The CMC values of the CTAC + MFH mixture increased with increasing temperature;that is, assembly was delayed by increased temperature. The micellization of the CTAC + MFH mixed system was delayed in alcoholic media. The observed-ΔG0mvalues for the association of the CTAC + MFH mixed system demonstrated a spontaneous aggregation process under all study *** on the-ΔH^(0)_(m) and +ΔS^(0)_(m) values, the association of the CTAC + MFH mixture is exothermic and the interaction forces acting between the CTAC and MFH species are hydrophobic, ion–dipole, and electrostatic interactions. The transfer properties and enthalpy–entropy compensation were also assessed and described comprehensively.

关键词： Moxifloxacin hydrochloride drug Aggregation Alcohol Hydrophobic interaction Critical micelle concentration Thermodynamic properties

Successful treatment of epithelial downgrowth with endoscopic photocoagulation and intracameral 5-fluorouracil after prolonged limbal wound leak

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International Journal of Ophthalmology(English edition) 2018年第4期11卷 703-704页

作者： Zakaria Abdollah Aida Zairani Mohd Zahidin Amin Ahem Ropilah abdul Rahman Norshamsiah md Din Department of Ophthalmology Universiti Kebangsaan Malaysia Medical Centre Kulliyyah of Medicine University College of Insaniah

Dear Editor,Epithelial downgrowth（EDG）is an uncommon and serious complication of intraocular surgery and trauma[1].It is recognized clinically by a translucent membrane on the corneal endothelium or *** of EDG is controversial and generally has a low success *** treatment modalities have been invasive and damaging to the anatomy of the eye[1].

关键词： ECP Successful treatment of epithelial downgrowth with endoscopic photocoagulation and intracameral 5-fluorouracil after prolonged limbal wound leak EDG Figure

Anxiolytic Effects of the Methanolic Extract of <i>Bacopa monniera</i>in Mice

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Pharmacology & Pharmacy 2019年第6期10卷 298-308页

作者： md. abdul Mannan Department of Pharmacy Stamford University Bangladesh Dhaka Bangladesh

Bacopa monniera Linn. or Brahmi, a plant in the family Scrophulariaceae, is used as a traditional medicine for memory improvement, dementia like anxiety, depression, epilepsy etc. for a long time in Bangladesh. This study evaluated the anxiolytic effects of the methanolic extract of B. monniera (MEBM) in animal models of anxiety. For the further tests and phytochemical screening, the whole plant of B. monniera extracted following maceration method. The extract was evaluated for anxiolytic activity using light/dark box, elevated plus maze, marble burying and rota rod tests in mice at the doses of 50, 100, and 200 mg/kg body weight. Diazepam (1.0 mg/kg), an anxiolytic drug used as standard drug. MEBM showed a strong and dose-dependent anxiolytic effects in animal models of anxiety. MEBM significantly increased the time spent in the light compartment, the latency time, and the entries of open arms in light/dark and elevated plus maze tests. In addition, MEBM also significantly decreased the number of buried marbles in marble burying test and increased the time of performance in rota rod test (p < 0.05). These were the major findings of this study. Therefore, our results reported that MEBM possesses anxiolytic effects in animal models of anxiety that support the traditional use of this plant as a potent agent to combat anxiety.

关键词： Bacopa monniera Scrophulariaceae Anxiolytic Animal Model

Clustering Countries on COVID-19 Data among Different Waves Using K-Means Clustering

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Journal of Computer and Communications 2023年第7期11卷 1-14页

作者： Muhtasim md. abdul Masud Department of Computer Science and Engineering Patuakhali Science and Technology University Dumki Patuakhali Bangladesh

The COVID-19 pandemic has caused an unprecedented spike in confirmed cases in 230 countries globally. In this work, a set of data from the COVID-19 coronavirus outbreak has been subjected to two well-known unsupervised learning techniques: K-means clustering and correlation. The COVID-19 virus has infected several nations, and K-means automatically looks for undiscovered clusters of those infections. To examine the spread of COVID-19 before a vaccine becomes widely available, this work has used unsupervised approaches to identify the crucial county-level confirmed cases, death cases, recover cases, total_cases_per_million, and total_deaths_per_million aspects of county-level variables. We combined countries into significant clusters using this feature subspace to assist more in-depth disease analysis efforts. As a result, we used a clustering technique to examine various trends in COVID-19 incidence and mortality across nations. This technique took the key components of a trajectory and incorporates them into a K-means clustering process. We separated the trend lines into measures that characterize various features of a trend. The measurements were first reduced in dimension, then clustered using a K-means algorithm. This method was used to individually calculate the incidence and death rates and then compare them.

关键词： COVID-19 Epidemic K-Means Clustering Correlations Infection Control SARS-CoV-2 Time Series