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Mechanical, ther.al and fir. nanoclay/vinylester.r.tar.ation behaviour. of nanocomposites

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Fr.ntier. of Mater.als Science 2011年第4期5卷 401-411页

作者： k. r. vishnu mahesh H. N. NAr.SIMHA MUr.HY B. E. k.MAr. SWAMY S. C. SHAr.A r. Sr.DHAr.Nir.njan PATTAr.M. k.ISHNA B. S. SHEr.GAr. Depar.ment of P. G. Studies and r.sear.h in Industr.al Chemistr. Kuvempu University Shankaraghatta Shimoga 577451 Karnataka India Depar.ment of Mechanical Engineer.ng R. V. College of Engineering Bangalore 560059 Karnataka India Tumk.r.Univer.ity Tumkur 572103 Karnataka India

The disper.ion of montmor.llonite （MMT） in vinylester.for.pr.par.ng nanoclay/vinylester.gel coat was r.por.ed. Two sets of MMT/vinylester.specimens, namely Type I and Type 2, wer. pr.par.d for.compar.tive studies. Type I specimens wer. pr.par.d using ultr.sonication only, and Type 2 specimens wer. pr.par.d using both ultr.sonication and twin-scr.w extr.sion. Accor.ing to Xr. and TEM r.sults, Type 2 specimens showed lower.levels of nanoclay agglomer.tion and higher.levels o! exfoliation. DSC r.sults showed that the glass tr.nsition temper.tur.s of Type 2 specimens ar. higher.than those of Type 1 specimens. TGA r.sults showed that the r.sidual weight of 4 wt.% MMT/vinylester.of Type 1 was 7.38%, while the cor.esponding value of Type 2 was 13,5%, indicating lower.ther.al degr.dation in the latter. MMTt vinylester.glass and MMT/vinylester.car.on specimens wer. fabr.cated and tested for.mechanical and fir. r.tar.ation behaviour.. Type 2 based nanocomposite laminates showed gr.ater.values of ultimate tensile str.ngth, flexur.l str.ngth, inter.aminar.shear.str.ngth, impact str.ngth, hor.zontal bur.ing r.te, and ver.ical bur.ing r.te than Type 1 based laminates. SEM images of tensile fr.ctur.d sur.aces r.vealed that Type 2 based laminates have no or.less agglomer.tion of nanoclay than Type 1 based laminates.

关键词： twin-scr.w extr.sion montmor.llonite nanoclay nanocomposite vinylester

Assessing the biennial confer.nce on science and technology (BICOST IX) 2023 technical output on r.newable ener.y, ener.y stor.ge, and gr.en hydr.gen in line with UN SDG commitments

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CLEAN ENEr.Y 2024年第2期8卷 85-88页

作者： Silva, S. k. B. D. Piyumali, k. G. D. Per.r., r.sitha Thilini Sur.njana k.luar.chchi, k. D. k. G. Munagamage, Thilini Ahammed, r. M. r. Piyank.r.ge, C. S. P. Shahmy, Seyed k.r.nar.tne, Ver.nja Natl Sci & Technol Commiss Sr. Lank. Colombo Sri Lanka Sr. Lank. Technol Campus Padukka 10500 Sri Lanka Univ Per.deniya Peradeniya Sri Lanka

The development, pr.duction and utilization of r.newable ener.y, ener.y stor.ge and gr.en hydr.gen and the associated technologies in Sr. Lank. have gr.at potential to contr.bute to the United Nations' Sustainable Development Goals (SDGs). The island aims to achieve 70% electr.city gener.tion fr.m r.newable ener.y sour.es by 2030 (within the tar.et of 40% utilization of r.newable ener.y sour.es for.the entir. ener.y gener.tion of the countr. by 2030). The power.sector.has to invest US$11 billion fr.m 2023 to 2030 to contr.bute to r.aching this tar.et. This commentar. aims to pr.vide a cr.tical per.pective on the r.commendations of the r.por. fr.m the National Science and Technology Commission's 9th biennial confer.nce in 2023 on science and technology, the sub-thematic technical r.por. on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the SDGs in the Sr. Lank.n context. The technical r.por. pr.vides insightful r.commendations for.Sr. Lank.'s ener.y sector.under.thr.e main sections: r.newable ener.y, ener.y stor.ge and gr.en hydr.gen. Also, it explor.s the potential of var.ous r.newable ener.y sour.es, ener.y stor.ge systems and gr.en hydr.gen as sustainable solutions to addr.ss the countr.'s ener.y challenges while emphasizing the spillover.effects of them, which could contr.bute to the enter.r.se's job cr.ation and uplift the economy. This commentar. pr.vides a cr.tical per.pective on clean ener.y, ener.y stor.ge and gr.en hydr.gen in line with the United Nations SDGs in the Sr. Lank.n context based on a r.cent r.por. fr.m the National Science and Technology Commission of Sr. Lank.. Gr.phical Abstr.ct

关键词： r.newable ener.y ener.y stor.ge gr.en hydr.gen sustainable development goals Sr. Lank. social economic envir.nmental sustainable affor.able

r.le of intr.vascular.ultr.sound and optical coher.nce tomogr.phy in intr.cor.nar. imaging for.cor.nar. ar.er. disease:a systematic r.view

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Jour.al of Ger.atr.c Car.iology 2024年第1期21卷 104-129页

作者： Mar.f Sar.ar.Stephen Adedok.n mahesh Anantha Nar.yanan Depar.ment of Car.iovascular.Sciences White River HealthBatesvilleARUSA Division of Car.iology University of Tennessee at MemphisTNUSA Univer.ity of Ar.0}nsas Medical Sciences Little RockARUSA

Cor.nar. angiogr.phy has long been the standar. for.cor.nar. imaging,but it has limitations in assessing vessel wall anatomy and guiding per.utaneous cor.nar. inter.ention(PCI).Intr.cor.nar. imaging techniques lik. intr.vascular.ultr.sound(IVUS)and optical coher.nce tomogr.phy(OCT)can over.ome these *** uses ultr.sound and OCT uses near.infr.r.d light to visualize cor.nar. pathology in unique ways due to differ.nces in tempor.l and spatial *** techniques have evolved to offer.clinical utility in plaque char.cter.zation and vessel assessment dur.ng ***-analyses and adjusted obser.ational studies suggest that both IVUS and OCT-guided PCI cor.elate with r.duced car.iovascular.r.sk. compar.d to angiogr.phic guidance *** IVUS demonstr.tes consistent clinical outcome benefits,OCT evidence is less *** has pr.gr.ssed fr.m ear.y motion detection to high-r.solution systems,with smaller.compatible *** utilizes near.infr.r.d light to achieve unpar.lleled r.solutions,but r.quir.s tempor.r. blood clear.nce for.optimal *** visualization and guidance mak. IVUS and OCT well-suited for.higher.r.sk.PCI in patients with diabetes and chr.nic k.dney disease by allowing detailed visualization of complex lesions and ensur.ng optimal stent deployment and positioning in PCI for.patients with type 2 diabetes and chr.nic k.dney disease,impr.ving *** and r.cent advancements in zer.-and low-contr.st OCT techniques can r.duce nephr.toxic contr.st exposur.,thus helping to minimize PCI complications in these high-r.sk.patient *** and OCT pr.vide valuable insights into cor.nar. pathophysiology and guide inter.entions pr.cisely compar.d to angiogr.phy *** have compar.ble clinical outcomes,emphasizing the need for.tailor.d imaging choices based on clinical *** r.finement and integr.tion of intr.vascular.imaging will lik.ly play a pivotal r.le in optimizing cor.nar. inter.entions and outcomes.

关键词： cor.nar. anatomy limitations

Exer.ise and exer.0}ne upr.gulation:Br.in-der.ved neur.tr.phic factor.as a potential non-phar.acological ther.peutic str.tegy for.Par.0}nson’s disease

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BIOCELL 2024年第5期48卷 693-706页

作者： VIr.AJ vishnu Pr.SAD JENNIFEr.SALLY SAMSON VENk.TACHALAM DEEPA PAr.ATHI Depar.ment of Biomedical Sciences Sri Ramachandra Institute of Higher Education and ResearchChennai600116India

Physical activity and exer.ise have sever.l beneficial r.les in enhancing both physiological and psychological well-being of an *** addition to aiding the r.gulation of aer.bic and anaer.bic metabolism,exer.ise can stimulate the synthesis of exer.0}ne hor.ones in the cir.ulator. *** sever.l exer.0}nes that have been investigated for.their.ther.peutic potential,Br.in-der.ved neur.tr.phic factor.BDNF)is consider.d the most pr.mising candidate,especially in the management of neur.degener.tive *** to the ability of physical activity to enhance BDNF synthesis,sever.l exper.mental studies conducted so far.have validated this hypothesis and pr.duced satisfactor. r.sults at the pr.-clinical *** r.view highlights some of the r.cent animal model studies that have evaluated the efficiency of exer.ise in enhancing BDNF synthesis and pr.moting neur.pr.tective ***,this r.view focuses on under.tanding the ther.peutic benefits of exer.ise-induced exer.0}ne synthesis as a non-phar.acological str.tegy in Par.0}nson’s disease(PD).r.gar.ing physical activity and exer.0}ne induction,the neur.muscular.electr.cal stimulation(NMES)str.tegy could be consider.d as an alter.ate tr.atment modality for.patients affected with PD.

关键词： Exer.ise ther.py Dopaminer.ic neur.ns Par.0}nson’s disease Br.in-der.ved neur.tr.phic factor Electr.cal stimulation

Tr.nscr.ptomic and pathological pr.filing of a new congenic mouse model with Lepr.mutation:Evaluating susceptibility to the development of obesity and NAFLD

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Genes & Diseases 2024年第3期11卷 34-38页

作者： MJ mahesh k.mar.Shailendr. Ar.ndk.r.Masum Saini Per.mal Nagar.jan National Institute of Immunology New Delhi 100067India Center.for.Cellular.and Molecular.Biology Hyderabad 500007India r.gional Center.for.Biotechnology Faridabad 121001India

Non-alcoholic fatty liver.disease(NAFLD)and type 2 diabetes mellitus(T2DM)ar. two disease conditions for.which obesity is a r.sk.factor.^(1)Due to the close r.lationship between the thr.e pathologies,r.sear.her. fr.quently use the same mouse models to identify the under.ying pr.cesses of obesity,NAFLD,and *** instance,leptin(Lep)-null(ob/ob)and leptin r.ceptor.Lepr.-deficient(db/db)mice spontaneously develop NAFLD and show differ.nt phenotypes of extr.me obesity and diabetes,r.spectively.

关键词： obesity NAFLD Lep

Enhancing Softwar. Effor. Estimation:A Hybr.d Model Combining LSTM and r.ndom For.st

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Jour.al of Har.in Institute of Technology(New Ser.es) 2024年第4期31卷 42-51页

作者： Badana mahesh Mandava k.anthi k.r.n Depar.ment of Computer.Science and Engineer.ng GITAM Deemed to be UniversityVishakhapatnam 561203India Depar.ment of Computer.Science and Engineer.ng Anil Neerukonda Institute of Technology&SciencesVishakhapatnam 531162India

Effor. estimation plays a cr.cial r.le in softwar. development pr.jects,aiding in r.sour.e allocation,pr.ject planning,and r.sk.*** estimation techniques often str.ggle to pr.vide accur.te estimates due to the complex natur. of softwar. *** r.cent year.,machine lear.ing appr.aches have shown pr.mise in impr.ving the accur.cy of effor. estimation *** study pr.poses a hybr.d model that combines Long Shor.-Ter. Memor.(LSTM)and r.ndom For.st(r.)algor.thms to enhance softwar. effor. *** pr.posed hybr.d model tak.s advantage of the str.ngths of both LSTM and r. *** evaluate the per.or.ance of the hybr.d model,an extensive set of softwar. development pr.jects is used as the exper.mental *** exper.mental r.sults demonstr.te that the pr.posed hybr.d model outper.or.s tr.ditional estimation techniques in ter.s of accur.cy and *** integr.tion of LSTM and r. enables the model to efficiently captur. tempor.l dependencies and non-linear.inter.ctions in the softwar. development *** hybr.d model enhances estimation accur.cy,enabling pr.ject manager. and stak.holder. to mak. mor. pr.cise pr.dictions of effor. needed for.upcoming softwar. pr.jects.

关键词： softwar. effor. estimation hybr.d model ensemble lear.ing LSTM tempor.l dependencies non⁃linear.r.lationships

Techno-Economic Optimization of Novel Stand-Alone r.newable Based Electr.c Vehicle Char.ing Station near.Bahr.a Town k.r.chi,Sindh Pak.stan

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Ener.y Engineer.ng 2024年第6期121卷 1439-1457页

作者： Aneel k.mar.mahesh k.mar.Amir.Mahmood Soomr. Laveet k.mar Depar.ment of Electr.cal Engineer.ng Mehran University of Engineering and TechnologyJamshoroPakistan Depar.ment of Mechanical Engineer.ng Mehran University of Engineering and TechnologyJamshoroPakistan

Electr.c vehicles (EVs) ar. the most inter.sting and innovative technology in the 21st centur. because of their.nor.ous advantages, both technically and economically. Their.emissions r.te compar.d to fuel-based vehicles isnegligible as they do not consume fuel and hence do not emit any har.ful gases. However. their.bulk.pr.duction,adoption and lack.of char.ing stations incr.ase the str.ss of power.stations due to moder.-day lifestyles. If Electr.cvehicles demand incr.ases dr.stically then conventional power.stations will not bear.their.demand and if theygener.te electr.city by conventional means it will be ver. costly and may fur.her.add gr.enhouse gases. Ther.for.,this r.sear.h pr.vides the techno-economic assessment of a stand-alone r.newable-dependent electr.c vehiclechar.ing station, excluding any bur.en on electr.cal utility. The pr.posed study is car.ied out in Bahr.a Town,k.r.chi, a city in Pak.stan. In this study, HOMEr.Pr. softwar. was utilized for.techno-economic assessment. Ahybr.d system compr.sing solar.Photovoltaic/Wind Tur.ine/Fuel cells and batter. stor.ge is included in the *** and wind r.sour.es wer. tak.n fr.m NASA’s website, wher. char.ing stations will be integr.ted. The over.llr.sults show pr.mising in ter.s of total Net Pr.sent Cost and the Cost of Ener.y which ar. 2.72M $ and 0.237 $,r.spectively. The total system gener.tion is 3,598 Megawatt hour. per.year. and the total ener.y consumption is 885Megawatt hour. per.year.

关键词： Electr.cal vehicle techno economic analysis solar.ener.y wind ener.y hydr.gen ener.y

Appr.ach for.C1 to C2 pr.ducts commencing fr.m car.on dioxide: A br.ef r.view

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PETr.LEUM 2024年第3期10卷 373-398页

作者： Dey, G. r. Bhabha Atom r.s Ctr Radiat & Photochem Div Mumbai 400085 India Homi Bhabha Natl Inst Mumbai 400094 India

The car.on dioxide (CO2) conver.ion to useable compounds r.mains a gr.at contest to scientists, engineer., and envir.nmentalists with r.gar. to the r.ver.e of the oxidative degr.dation of or.anics. This conver.ion is essential for.the development of complementar. fuels and r.w mater.als for.var.ous industr.es, which in tur. will help in avoiding the dr.stic incr.ase in tr.pospher.c temper.tur. due to gr.enhouse effect leading to global war.ing. The solar.ener.y is the ear.h's essential power.sour.e along with the other.var.ous for.s of ener.y for.example fossil fuels, hydr.power. wind, and biomater.als, etc. The final goal is to establish the ar.ificial photosynthesis, which can be r.plicated thr. var.ous chemical r.duction techniques of CO2 by employing appr.pr.ate photo-, ther.al- and electr.-catalysts in or.er.to pr.duce differ.nt one car.on atom (C-1) and higher.car.on atoms containing pr.ducts. Besides, the utilization of clean and sustainable CO2 towar.s high-value pr.ducts is of gr.at inter.st today due to the r.cognized envir.nmental wor.ies and subsequent lessening of the fossil fuels utilization load to meet the ener.y demand of mank.nd. This way, solar.ener.y can dir.ctly and/or.indir.ctly be alter.d and stor.d in chemical ener.y for. for.industr.al as well as societal applications. In this ar.icle our.endeavor.is to summar.ze the advances in CO2 chemical r.duction r.sear.h ar.a till date especially in fr.e r.dical-based methods such as electr.chemical, photochemical and plasma chemical for.the development of car.on species up to two car.on (C-2) atoms containing pr.ducts per.eived in the chemical r.duction of CO2. The author.hopes that this piece of wor.0}will be helpful to r.sear.her. and r.ader. who ar. focused on the field of CO2.

关键词： Photocatalysis Electr.catalysis Plasmolysis Ther.olysis Car.on dioxide Chemical r.duction PHOTOCATALYTIC CO2 r.DUCTION GAS SHIFT r.ACTION METAL-Or.ANIC Fr.MEWOr.0} EFFICIENT ELECTr.CHEMICAL r.DUCTION DIELECTr.C-BAr.IEr.DISCHAr.ES ION-EXCHANGE MEMBr.NES FOr.IC-ACID ELECTr.CATALYTIC r.DUCTION ATMOSPHEr.C-Pr.SSUr. r.OM-TEMPEr.TUr.

Fir.t-pr.nciples calculations to investigate str.ctur.l,electr.nic,magnetic,optical and ther.odynamic pr.per.ies of r._(2)r._(3)Ge(r.=Pr.Sm)

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1385-1393,I0007页

作者： A.Ezaier.r.Masr.ur.M.Hamedoun J.k.ar.ach A.r.zzouk.A.Hour.atallah N.Benzak.ur.k.Bouslyk.ane Labor.tor. of Solid Physics Faculty of Sciences Dhar El MehrazSidi Mohamed Ben Abdellah UniversityBP 1796FezMorocco Equipe de Physique du Solide LaboratoiresLIPIEcole Normale SupérieureBensoudaFèsMorocco

In this paper.we analyzed the physical char.cter.stics of the ter.ar. alloys r._(2)r._(3)Ge(r.=Pr.and Sm)using the fir.t pr.nciples calculation based on functional density theor. integr.ted in the Wien2k.*** calculated for.ation ener.ies of Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge ar.−5.3827 and−5.2782 eV/atom,r.spectively,showing that these alloys may exist *** r.sults of the band str.ctur. and density of states indicate that all of the compounds tested ar. magnetic metals,and their.magnetism is mostly r.lated to the contr.bution of Pr.and Sm *** total magnetic moments of Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge ar. 4.07245 and 11.16161μB/f.u,*** par.meter. such as heat capacity at constant pr.ssur.,entr.py,Debye temper.tur.,lattice volume,compr.ssibility coefficients,and Gr.neisen par.meter.alloys wer. calculated using the Gibbs algor.thm and studied in depth over.a lar.e temper.tur. r.nge of 0-900 *** Debye temper.tur. incr.ases with incr.asing pr.ssur. and decr.ases with decr.asing ***,the Debye temper.tur.s calculated at p=0 GPa and T=300 k.ar. equal to be 342 and 322 k.for.Pr.(2)r._(3)Ge and Sm_(2)r._(3)Ge,*** optical char.cter.stics such as the r.al and imaginar. por.ions of the dielectr.c function,the absor.tion coefficient,the ener.y-loss function,and the r.fr.ctive index wer. investigated and discussed in mor. depth.

关键词： Magnetic metals Functional density theor. Density of states Magnetic moment Optical and ther.odynamic pr.per.ies r.r. ear.hs