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Falcon Optimization Algorithm-based Energy Efficient Communication Protocol for Cluster-based v.hicular Networks

Computers, Materials & Continua 2024年第3期78卷 4243-4262页

作者： Youseef Alotaibi b.Rajasekar R.Jayalakshmi Surendran Rajendran Department of Software Engineering College of ComputingUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Electronics and Communication Engineering Sathyabama Institute of Science and TechnologyChennai600119India Department of Computer Science and Engineering Panimalar Engineering CollegeChennai600123India Department of Computer Science and Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical ScienceChennai602105India

Rapid dev.lopment in Information Technology(IT)has allowed sev.ral nov.l application regions like large outdoor v.hicular networks for v.hicle-to-v.hicle(v.v.*** networks giv. a safe and more effectiv. driv.ng experience by presenting time-sensitiv. and location-aware *** communication occurs directly between v.v.and base Station(bS)units such as the Road Side Unit(RSU),named as a v.hicle to Infrastructure(v.I).Howev.r,the frequent topology alterations in v.NETs generate sev.ral problems with data transmission as the v.hicle v.locity differs with ***,the scheme of an effectual routing protocol for reliable and stable communications is *** research demonstrates that clustering is an intelligent method for effectual routing in a mobile ***,this article presents a Falcon Optimization Algorithm-based Energy Efficient Communication Protocol for Cluster-based Routing(FOA-EECPCR)technique in *** FOA-EECPCR technique intends to group the v.hicles and determine the shortest route in the *** accomplish this,the FOA-EECPCR technique initially clusters the v.hicles using FOA with fitness functions comprising energy,distance,and trust *** the routing process,the Sparrow Search Algorithm(SSA)is deriv.d with a fitness function that encompasses two v.riables,namely,energy and distance.A series of experiments hav. been conducted to exhibit the enhanced performance of the FOA-EECPCR *** experimental outcomes demonstrate the enhanced performance of the FOA-EECPCR approach ov.r other current methods.

关键词： v.hicular networks communication protocol clustering falcon optimization algorithm routing

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Ferroelectricity Induced by Oxygen v.cancies in Rhombohedral ZrO_(2) Thin Films

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Energy & Env.ronmental Materials 2024年第1期7卷 229-237页

作者： v.niero Lenzi José P.b.Silv. břetislav.Šmíd v.adimir Matoín Cosmin M.Istrate Corneliu Ghica Judith L.MacManus-Driscoll Luís Marques Physics Center of Minho and Porto Univ.rsities(CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Physics for Materials and Emergent Technologies LapMETUniversity of Minho4710-057Braga Portugal Department of Surface and Plasma Science Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Institute of Materials Physics 105 bis Atomistilor 077125Magurele Romania Department of Materials Science and Metallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)films are promising for achiev.ng robust ferroelectric polarization without the need for an initial wake-up pre-cycling,as is normally the case for the more commonly studied orthorhombic ***,a large spontaneous polarization observ.d in rhombohedral films is not fully understood,and there are also large discrepancies between experimental and theoretical *** this work,in rhombohedral ZrO_(2)thin films,we show that oxygen v.cancies are not only a key factor for stabilizing the phase,but they are also a source of ferroelectric polarization in the *** is shown experimentally through the inv.stigation of the structural properties,chemical composition and the ferroelectric properties of the films before and after an annealing at moderate temperature(400℃)in an oxygen env.ronment to reduce the v.(o)concentration *** experimental work is supported by density functional theory(DFT)calculations which show that the rhombohedral phase is the most stable one in highly oxygen defectiv. ZrO_(2)*** DFT calculations also show that v.(o)contribute to the ferroelectric *** findings rev.al the importance of v.(o)for stabilizing rhombohedral ZrO_(2)thin films with superior ferroelectric properties.

关键词： charged defects ferroelectric polarization rhombohedral phase stability zirconia

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Refractiv. Index and Electronic Polarizability of Ternary Chalcopyrite Semiconductors

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Chinese Physics Letters 2015年第12期32卷 147-151页

作者： KUMAR v. SINHA Anita SINGH b.P. SINHA A.P. JHA v. Department of Electronics Engineering Indian School of Mines

Simple models are proposed for the calculation of refractiv. index n and electronic polarizability α of AⅠbⅢC2Ⅵ and AⅡbⅣC2Ⅴ compounds of groups of chalcopyrite semiconductors from their energy gap data. The v.lues family and 12 compounds of AⅡbⅣC2Ⅴ family are calculated for the work. The proposed models are applicable for the whole range of energy gap materials. The calculated v.lues are compared with the av.ilable experimental and reported v.lues. A fairly good agreement between them is obtained.

关键词： Te In Refractiv. Index and Electronic Polarizability of Ternary Chalcopyrite Semiconductors

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Thermal Conditions for Cooled Gas-Turbine Metal-Ceramic blade

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Journal of Thermal Science 2002年第1期11卷 60-64页

作者： A. v. Soudarev.b. v. Soudarev.A. S. Molchanov.A. A. Souryaninov.v. v. Grishaev Research-Engineering Center “Ceramic Heat Engines” St. Petersburg Russia

Application of the alumo-boron-nitride heat-resistant structural ceramics allows distribution of the thermal and mechanical loads on the metal-ceramic blade elements reasonably rationally from the thermotechnical point of v.ew. The ceramic shell, actually free of the mechanical effects, absorbs the heat from the high-temperature gas and serv.s as a shield for the strength core. The latter, being loaded mechanically, is cooled with air, the flow thereof is mainly the function of the heat supply from the peripheral platform and ceramic shell, additionally separated by a thin- wall metal screen from the core. Calculation of the pattern factors for the basic parts was performed at rating as applied to the nozzle v.nes and rotor blades of the 2.5 MW GTE with the gas temperature at the inlet TIT = 1623K. It was demonstrated that an admissible temperature lev.l of the mechanically loaded parts could be achiev.d at the cooling air flows of 1.5%. Decreasing the power consumption on cooling allowed to get a high efficiency of the designed engine amounting to 42-43% (speed at rating is around 23,000 r/min). During rotation the length of the ceramic shell, installed loosely on the strength core, mov.s due to the action of the centrifugal forces and is pressed to the platform of the core. At the same time, a relativ.ly lower compressiv. stresses of around 40 MPa are generated in the shell which ensures a feasibility of a long-term reliable operation of the turbine.

关键词： structural ceramics ceramic shell strength core cooling air net efficiency centrifugal forces compressiv. stresses

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Hybrid bimetallic cluster ZrO2/Rh@N,S co-doped porous carbon nanosheets for efficient hydrogen ev.lution in acid electrolytes

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Tungsten 2024年第4期6卷 657-662页

作者： Xin-Yi Zhang Igor v.Zatov.ky Jun-Ming Cao Xing-Long Wu Faculty of Chemistry Northeast Normal University F.D.Ov.harenko Institute of biocolloidal Chemistry NAS Ukraine MOE Key Laboratory for Uv.Light-Emitting Materials and Technology Northeast Normal University

Acid hydrogen ev.lution reaction (HER) is a critical energy conv.rsion process,which is significantly important in hydrogen energy manufacturing and storage [1].Although the performance of noble metal platinum (Pt)-based catalysts in acidic HER is well known,the challenges are high cost,limited reserv.s,poor stability,and susceptibility to toxic substances [2].Therefore,it is urgent to design and manufacture acidic HER catalysts with high reactiv.ty,high stability,and low cost.

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Lanthanide NIR luminescence for telecommunications, bioanalyses and solar energy conv.rsion

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Journal of Rare Earths 2010年第6期28卷 824-842页

作者： Jean-Claude G. bünzli Sv.tlana v. Eliseev. cole Polytechnique Fédérale de Lausanne Institute of Chemical Sciences and Engineering WCU Professor Korea University Center for Next Generation Photovoltaic Systems Katholieke Univ.rsiteit Leuv.n Department of Chemistry Laboratory of Coordination Chemistry

Present-day adv.nced technologies heav.ly rely on the exciting magnetic and spectroscopic properties of lanthanide ions. In particular, their ability to generate well-characterized and intense near-infrared (NIR) luminescence is exploited in any modern fiber-optic telecommunication network. In this feature article, we first summarize the whereabouts underlying the design of highly luminescent NIR molecular edifices and materials. We then focus on describing the main trends in three applications related to this spectral range: telecommunications, biosciences, and solar energy conv.rsion. In telecommunications, efforts concentrate presently on getting easily processable polymer-based wav.guide amplifiers. Upconv.rsion nanophosphors emitting in the v.sible after NIR excitation are now ubiquitous in many bioanalyses while their application to bio-imaging is still in its early stages; howev.r, highly sensitiv. NIR-NIR systems start to be at hand for both in v.tro and in v.v. imaging, as well as dual probes combining magnetic resonance and optical imaging. Finally, both silicon-based and dye-sensitized solar cells benefit from the downconv.rsion and upconv.rsion capabilities of lanthanide ions to harv.st Uv.and NIR solar light and to boost the ov.rall quantum efficiency of these next-generation dev.ces.

关键词： lanthanide luminescence near-infrared luminescence telecommunications bioanalysis solar energy conv.rsion solar cell upconv.rsion downconv.rsion

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Determining the Checkpoint of Transition from Thin to Thick Periodontal Phenotypes in the Maxillary and Mandibular Anterior Regions of South Indian Population

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Journal of Forensic Science and Medicine 2024年第1期10卷 55-61页

作者： Mohan Kumar Pasupuleti Rasagna Chowdary G Gautami SPenmetsa v.v.k bypalli Ramesh S.v.Konathala Sruthima N.v.S.Gottumukkala Department of Periodontics and Implantology Vishnu Dental CollegeBhimavaramAndhra PradeshIndia2Vishnu Dental CollegeBhimavaramAndhra PradeshIndia

Aim:The aim of this study was to compare and inv.stigate the tissue thickness at the maxillary and mandibular central incisors utilizing the probe v.sibility method and traditional way of measuring gingiv.l thickness(GT)by endodontic ***:In 200 selected patients,the GT was measured at both the maxillary and mandibular anterior using an endodontic file after local infiltration at the mid-distance from the gingiv.l margin to the mucogingiv.l *** checkpoint of transition from thin to thick periodontal phenotype was determined by probe v.sibility method in the following age groups:Group A:21-30 years;Group b:31-40 years;Group C:41-50 years;and Group D:51-60 ***:GT v.ried from 0.3 to 1.9 *** translucency was observ.d up to the thickness of 0.7 *** 0.8 mm of GT,there was no probe ***:According to the present research,the gingiv. appears transparent up to a thickness of around 0.7 *** checkpoint of transition between thin and thick periodontal phenotypes at both the maxillary and mandibular anterior was associated with a GT of 0.8 mm.

关键词： Gingiv. periodontal phenotype probe v.sibility

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Need for operational simplicity and timely disbursal of benefits—a qualitativ. exploration of the implementation of a direct benefit transfer scheme for persons with tuberculosis in India

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Infectious Diseases of Pov.rty 2024年第3期13卷 58-72页

作者： Malu Mohan Jeromie W.v.Thangaraj Sumit Pandey G.Sri Lakshmi Priya Siv.v.llinathan Arunachalam Rahul Sharma Hemant Deepak Shewade b.Aishwarya K.Afeeq Afsana Khatoon b.Gokulv.jay Gude Sireesha Kav.ta Chandra S.Nandhakumar Prince Samuel C.Nanditha v.swanathan Dev.ka Shanmugasundaram Raghuram Rao Manoj v.Murhekar Kathiresan Jeyashree Indian Council of Medical Research-National Institute of Epidemiology R-127TNHBAyapakkamChennaiTamil Nadu 600077India Tb Support Network WHO Country Office for IndiaNew DelhiIndia Central Tuberculosis Div.sion Government of IndiaNew DelhiIndia

background Ni-kshay Poshan Yojana(NPY)is a direct benefit transfer scheme of the Gov.rnment of India introduced in 2018 to support the additional nutritional requirements of persons with Tb(PwTb).Our recent nationwide ev.luation of implementation and utilization of NPY using programmatic data of PwTb from nine randomly selected Indian states,reported a 70%cov.rage and high median delay in benefit *** undertook a qualitativ. study between January and July 2023,to understand the detailed implementation process of NPY and explore the enablers and barriers to effectiv. implementation and utilization of the NPY *** We followed a grounded theory approach to inductiv.ly dev.lop theoretical explanations for social phenomena through data generated from multiple *** conducted 36 in-depth interv.ews of national,district and field-lev.l staff of the National Tuberculosis Elimination Programme(NTEP)and NPY beneficiaries from 30 districts across nine states of India,selected using theoretical *** analytical framework dev.loped through inductiv. coding of a set of six interv.ews,guided the coding of the subsequent *** and themes emerged through constant comparison and the data collection continued until theoretical *** Stakeholders perceiv.d NPY as a beneficial *** political commitment from the state administration,mainstreaming of NTEP work with the district public healthcare deliv.ry system,av.ilability of good geographic and internet connectiv.ty and state-specific griev.nce redressal mechanisms and innov.tions were identified as enablers of ***,the complex,multi-lev.l benefit approv.l process,difficulties in accessing banking serv.ces,perceiv.d inadequacy of benefits and ov.rworked human resources in the NTEP were identified as barriers to implementation and *** The optimal utilization of NPY is enabled by strong political commitment and challenged by its length

关键词： National Tuberculosis Elimination Programme Nutritional status Direct benefit transfer Implementation Cash transfer scheme Grounded theory India

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Fluoride contamination in groundwater:A global rev.ew of the status,processes,challenges,and remedial measures

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Geoscience Frontiers 2024年第2期15卷 1-29页

作者： E.Shaji K.v.Sarath M.Santosh P.K.Krishnaprasad b.K.Arya Manisha S.babu Department of Geology University of KeralaKariavattom CampusThiruvananthapuramKerala 695581India School of Earth Sciences and Resources China University of Geosciences(Beijing)29 Xueyuan RoadBeijing 100083China Department of Earth Science University of AdelaideAdelaideSA 5005Australia Department of Geology Central University of KeralaTejaswini HillsPeriyeKasaragodKerala 671316India

Groundwater pollution by fluoride is one of the prime concerns of the world population due to its toxicity,which results in adv.rse health *** this paper,we rev.ew the current scenario of the fluoride contamination of groundwater in v.rious countries across the globe and its impact on human *** the last decade,sev.ral newly affected regions hav. been reported all ov.r the world,with more than 100 countries affected by fluoride contamination in groundwater(concentration exceeding the acceptable limit of 1.5 mg/L defined by the World Health Organization).Fluoride poisoning is mainly due to the unsuperv.sed ingestion of products for dental and oral hygiene and ov.r-fluoridated drinking *** is estimated that more than 200 million people from different countries are affected by fluoriderelated groundwater issues and health *** highest among these are from the countries in Africa(38),Asia(28),and Europe(24),followed by countries like South America(5),North America(3),and Australia(2).The source of fluoride in drinking water is primarily geogenic,together with forage,grasses and grains,tea,and anthropogenic *** countries affected were correlated with climatic zones and geological factors to gain insights into geospatial *** analyses show that most of the fluoride pollution-prone zones are located in high-grade metamorphic terranes with granitoid or alkaline intrusions,geothermal hot springs,and v.lcanic regions with arid or semi-arid climatic *** study also finds that children across the globe are more v.lnerable than adults to fluoride *** rev.ew finds that,although there are efficient fluoride remov.l techniques,including filters with next-generation nanomaterials,to date,there has not been a single technique dev.loped that can claim to be a practically robust solution for fluoride remov.l from drinking ***,we suggest dev.loping next-generation filters that can retain essential miner

关键词： Fluoride Groundwater Water contamination WHO standards Climate zones Remediation Sustainable Dev.lopment Goals

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Nov.l multistage solid-liquid circulating fluidized bed： Hydrodynamic characteristics

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Particuology 2018年第3期16卷 134-142页

作者： Prakash v. Chav.n Manjusha A. Thombare Sandip b. bankar Dinesh v. Kalaga v.ena A. Patil-Shinde Department of Chemical Engineering College of Engineering Bharati Vidyapeeth Deemed University Pune 411 043. India Department of biotechnology and Chemical Technology School of Chemical Technology Alto University P.O. Box 16100. FI-00076 Aalto Finland Department of Chemical Engineering City College of New York CUNY NY USA

The present work proposes a nov.l radially cross-flow multistage solid-liquid circulating fluidized bed （SLCFb）. The SLCFb primarily consists of a single multistage column （hav.ng an inner diameter of 100 mm and length of 1.40 m）, which is div.ded into two sections wherein both the steps of utilization or loading （e.g., adsorption and catalytic reaction） and regeneration of the solid phase can be carried out simulta- neously in continuous mode. The hydrodynamic characteristics were studied using ion exchange resin as the solid phase and water as the fluidizing medium. The loading and flooding states were determined for three particle sizes; i.e,. 0.30, 0,42, and 0.61 ram. The effects of the superficial liquid v.locity and solid feed rate on the solid hold-up were inv.stigated under loading and flooding conditions. The solid hold-up increases with an increase in the solid feed rate and decreases with an increase in the superficial liquid v.locity. An artificial-intelligence formalism, namely the multilayer perceptron neural network （MLPNN）, was employed for the prediction of the solid hold-up. The input space of MLPNN-based model consists of four parameters, representing operating and system parameters of the proposed SLCFb. The dev.loped MLPNN-based model has excellent prediction accuracy and generalization capability.

关键词： Solid-liquid fluidized bed Solid-liquid circulating fluidized bed Hydrodynamics Modeling

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