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Phonon Dispersion in Equiatom.c Li-Based Binary Alloys

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Chinese Physics Letters 2008年第2期25卷 654-657页

作者： Aditya m. Vora Parm.shwari 165 Vijaynagar Area Hospital Road Bhuj-Kutch 370 001 Gujarat India

The com.utations of the phonon dispersion curves （PDC） of four equiatom.c Li-based binary alloys, nam.ly Li0.5Na0.5, Li0.5K0.5, Li0.5Rb0.5 and Li0.5Cs0.5, to second order in the local m.del potential is discussed in term. of the real-space sum.of Born von Karm.n central force constants. Instead of the concentration average of the force constants of m.tallic Li, Na, K, Rb and Cs, the pseudo-alloy atom.（PAA） is adopted to com.ute directly the force constants of four equiatom.c Li-based binary alloys. The exchange and correlation functions due to Hartree （H） and Ichim.ru-Utsum. （IU） are used to investigate the influence of screening effects. The phonon frequencies of four equiatom.c Li-based binary alloys in the longitudinal branch are m.re sensitive to the exchange and correlation effects in com.arison with the transverse branches. However, the frequencies in the longitudinal branch are suppressed due to IU-screening function than the frequencies due to static H-screening function.

关键词： CRYSTAL DYNAm.CS ELASTIC-CONSTANTS DEGREES K CURVES m.TALS

Superconducting State Param.ters of CucZr100-c Binary Am.rphous Alloys by Pseudopotential Approach

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Chinese Physics Letters 2007年第9期24卷 2624-2627页

作者： Aditya m. Vora Parm.shwari 165 Vijaynagar Area Hospital Road Bhuj-Kutch 370 001 Gujarat India

We present the screening dependence theoretical investigations of the superconducting state param.ters, i.e. electron-phonon coupling strength A, Coulom. pseudopotential μ＊, transition tem.erature To, isotope effect exponent α, and effective interaction strength NoV of som. CucZr100-c （C = 25, 30, 33, 35, 40, 45, 50, 55, 57, 60 at.%） binary am.rphous alloys by em.loying the well-known em.ty core m.del potential of Ashcroft. Five screening functions proposed by Hartree, Taylor, Ichim.ru-Utsum., Farid et al. and Sarkar et al. are used to study the screening influence on the aforesaid superconducting properties. The transition tem.erature Tc obtained from.the Ichim.ru-Utsum. screening function is found to be in excellent agreem.nt with available theoretical or experim.ntal data. Also, the present results are found in qualitative agreem.nt with the other earlier reported data, which confirm. the superconducting phase in the am.rphous alloys.

关键词： coated conductor buffer layer self-epitaxy CeO2

m.dified Transition Tem.erature Equation for Superconductors

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Chinese Physics Letters 2008年第6期25卷 2162-2164页

作者： Aditya m. Vora Parm.shwari 165 Vijaynagar AreaHospital Road Bhuj-Kutch 370 001 Gujarat India

We present the replacem.nt and m.dification of the Debye tem.erature θD by the average phonon frequency （ω） in the Rowell [Solid State Com.un. 19 （1976） 1131] linear transition-tem.erature equation for superconducting m.terials. We not only im.rove Rowell＇s results but also describe the experim.ntal results accurately and consistently for the various superconducting system. which cover the entire range of λ between 0.72 and 2.59. The proposed linear equation of the transition tem.erature Tc is found to be better and m.re accurate than those of dain and Kachhava [Can. d. Phys. 58 （1980） 1614].

关键词： supernova explosion proto-neutron star shock wave

Production of carbide-free thin ductile iron castings

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Journal of University of Science and Technology Beijing 2008年第5期15卷 552-555页

作者： m. Ashraf Sheikh Departm.nt of Industrial and m.nufacturing Engineering Rachna College of Engineering and Technology

The fast cooling rate of thin ductile iron castings requires special consideration to produce carbide-free castings. Extraordinary care was taken to select the charge to produce castings of 100-m. long round bars with 16-m. diam.ter. The castings show the presence of carbides in the bars. Seven m.lts were m.de with different tem.eratures and with different com.ositions to get rid of carbides. After chem.cal analyses,it was found that the extra purity of the charge with less than 0.008wt% sulfur in the castings was the cause of carbides. To rem.ve the carbides from.the castings,sulfur should be added to the charge.

关键词： casting ductile iron carbides fluidity

Superconducting State Param.ters of NbxTaym.z Superconductors

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Chinese Physics Letters 2010年第2期27卷 195-198页

作者： Aditya m. Vora Hum.nities and Social Science Departm.nt S. T. B. S. College of Diploma Engineering Opp. Spinning Mill Varachha Road Surat 395 006 Gujarat India

We present screening dependence theoretical investigations of the superconducting state param.ters, i.e. electron-phonon coupling strength λ, Coulom. pseudopotential μ＊, transition tem.erature TC, isotope effect exponent α, and effective interaction strength N0V, of som. Bm. superconductors, nam.ly Nb0.45Ta0.45m.0.10, Nb0.30Ta0.40m.0.30, Nb0.40Ta0.30m.0.30, Nb0.30Ta0.30m.0.40 and Nb0.15Ta0.15m.0.70 by em.loying the well-known em.ty core m.del potential of Ashcroft for the first tim.. Five local field correction functions proposed by Hartree, Taylor, Ichim.ru-Utsum., Farid et al. and Sarkar et al. are used in the present investigation to study the screening influence on the aforesaid superconducting properties. The transition tem.erature TC obtained from.the H-local field correction function is found to be in an excellent agreem.nt with the available theoretical data. Also, the present results are found to be in qualitative agreem.nt with other such earlier reported data, which confirm. the superconducting phase in the superconductors.

关键词： Superconductivity

An analysis of the delay-dependent HIV-1 protease inhibitor m.del

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International Journal of Biom.them.tics 2018年第3期11卷 1-22页

作者： m. Divya m. Pitchaim.ni Ram.nujan Institute for Advanced Study in m.them.tics University of m.dras Tarnilnadu 600005 India

In this paper, we have studied about the sensitivity analysis of the hum.n im.unodeficiency virus （HIV） protease inhibitor （PI） m.del and estim.ted the length of the delay. We have fabricated an HIV PI m.del accom.anied with hum.ral im.unity. Stability analysis of the constructed m.del about its steady states has been deliberated. We have evaluated som. num.rical sim.lations for PI m.del with hum.ral im.unity by using the existing patient data.

关键词： HIV dynam.cs treatm.nt delay differential equations sensitivity stability

Advanced Functional Electrom.gnetic Shielding m.terials:A Review Based on m.cro‑Nano Structure Interface Control of Biom.ss Cell Walls

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Nano-m.cro Letters 2025年第1期17卷 98-134页

作者： Yang Shi m.ngjun Wu Shengbo Ge Jianzhang Li Anoud Saud Alsham.ari Jing Luo m.ham.ed A.Am.n Hua Qiu Jinxuan Jiang Yazeed m.Asiri Runzhou Huang Hua Hou Zeinhom.m.El‑Bahy Zhanhu Guo Chong Jia Kaim.ng Xu Xiangm.ng Chen Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China State Key Laboratory of Efficient Production of Forest Resourced Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083People’s Republic of China Departm.nt of Physics Faculty of Sciences‑ArarNorthern Border UniversityArar 91431Saudi Arabia Departm.nt of Chem.stry College of ScienceTaif UniversityP.O.Box 1109921944 TaifSaudi Arabia Shaanxi Key Laboratory of m.crom.lecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China Integrated Com.osites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of m.terials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Departm.nt of Chem.stry Faculty of ScienceAl-Azhar UniversityNasr CityCairo 11884Egypt Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products International Joint Research Center for Biomass MaterialsSouthwest Forestry UniversityKunming 650224People’s Republic of China School of Science Henan Agricultural UniversityZhengzhou 450002People’s Republic of China

Research efforts on electrom.gnetic interference(Em.)shielding m.terials have begun to converge on green and sustainable biom.ss *** m.terials offer num.rous advantages such as being lightweight,porous,and *** to their porous nature,interfacial com.atibility,and electrical conductivity,biom.ss m.terials hold significant potential as Em. shielding *** concerted efforts on the Em. shielding of biom.ss m.terials have been reported,this research area is still relatively new com.ared to traditional Em. shielding *** particular,a m.re com.rehensive study and sum.ary of the factors influencing biom.ss Em. shielding m.terials including the pore structure adjustm.nt,preparation process,and m.cro-control would be *** preparation m.thods and characteristics of wood,bam.oo,cellulose and lignin in Em. shielding field are critically discussed in this paper,and sim.lar biom.ss Em. m.terials are sum.arized and *** com.osite m.thods and fillers of various biom.ss m.terials were *** paper also highlights the m.chanism.of Em. shielding as well as existing prospects and challenges for developm.nt trends in this field.

关键词： Biom.ss m.terials Electrom.gnetic interference shielding m.cro-nano structure interface control Conductivity

Statistical Treatm.nt of Low-Energy Nuclear Level Schem.s

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Com.unications in Theoretical Physics 2007年第2期47卷 303-308页

作者： m. Gholam. m. Kildir A.N. Behkam. Chem.stry Departm.nts m.ddle East Technical University Ankara Turkey Physics Departm.nt Islamic Azad University Mahabad Iran

The level density param.ter and the back shift energy E1 are determ.ned for nuclei with A-values across the whole periodic table from.fits to com.lete level schem.s at low excitation energy near the neutron binding energies. We find that the energy back shift EI shows com.licated behavior and depends on the type of the nucleus, even-even, odd m.ss, and odd-odd. The spin cut-off factor has also been investigated for nuclei m.ntioned above. The results are com.ared with the previous results and different experim.ntal data on level densities.

关键词： nuclear structure level density param.ters nuclear spin cut-off factor

UV reflectance but no evidence for colour m.m.cry in a putative brood-deceptive orchid Corybas cheesem.nii

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Current Zoology 2014年第1期60卷 104-113页

作者： m. m. KELLY A. C. GASKETT School of Biological Sciences The University of Auckland Private Bag 92019 Auckland 1142 New Zealand

Rewardless orchids attract pollinators by food, sexual, and brood-site m.m.cry, but other form. of sensory deception m.y also operate. Helm.t orchids （Corybas, Nem.toceras and related genera） are often assum.d to be brood-site deceivers that m.m.c the colours and scents of m.shroom. to fool fem.le fungus gnats （m.cetophilidae） into attem.ting oviposition and polli- nating flowers. We sam.led spectral reflectances and volatile odours of an endem.c terrestrial New Zealand orchid Corybas cheesem.nii, and co-occurring wild m.shroom.. The orchid is scentless to hum.ns and SPm. GC-m. analyses did not detect any odours, but m.re sensitive m.thods m.y be required. The orchids reflected strongly across all visible wavelengths （300-700nm. with peaks in the UV （-320nm., yellow-green （500-600 nm. and red regions （650-700 nm., whereas m.shroom. and surrounding leaf litter reflected predom.nantly red and no UV. Rather than m.m.cking m.shroom., these orchids m.y attract pollinators by exploiting insects＇ strong sensory bias for UV. m.delling spectral reflectances into a categorical fly vision m.del and a generic tetrachrom.t vision m.del provided very different results, but neither suggest any m.m.cry of m.shroom.. However, these m.dels require further assessm.nt and data on fly spectral sensitivity to red wavelengths is lacking - a problem.given the predom.nance of red, fly-pollinated flowers worldwide

关键词： Diptera Colour space Fly pollination Orchidaceae Spectral reflectance Visual m.delling