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Study of the dinuclear system for^(296)119 superheavy compound nucleus in fusion reactions

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Chinese Physics C 2021年第4期45卷 325-334页

作者： j.Mohammadi O.n.Ghodsi Department of Physics Faculty of ScienceUniversity of MazandaranP.O.Box 47415-416BabolsarIran

This investigation aims to find an appropriate dinuclear system for the formation of^(296)119 superheavy compound *** studying the driving potential and measuring the capture cross section of the reactions,the evolution of the dinuclear system can be *** this study,we obtained capture,fusion,and evaporation residue cross sections and survival probability at energies near the Coulomb barrier for four reactions,namely ^(45)Sc+^(251)Cf,^(42)Ca+^(254)Es,^(39)K+^(297)Fm,and ^(38)Ar+^(258)*** caleulations show that the reaction 38Ar+258 Md is a suitable choice for the formation of an element with 119 protons among the studied reactions from a the-oretical viewpoint.

关键词： dinuclear system cross section fusion reaction superheavy elements

Magnetically propelled Carreau fluid flow over penetrable sensor surface influenced by thermal radiation,joule heating and heat generation

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Communications in Theoretical Physics 2022年第2期74卷 9-18页

作者： B j Gireesha B nagaraja n Srikantha n G Rudraswamy A Felicita Department of Studies and Research in Mathematics Kuvempu UniversityShankaraghattaShivamoggaKarnatakaIndia Department of Mathematics MS Ramaiah Institute of TechnologyBangaloreIndia Department of Mathematics P.C.Jabin Science College(Autonomous)HubballiIndia

This examination emphasizes the analysis of thermal transmission of Carreau fluid flow on a permeable sensor surface equipped with radiation,joule heating,an internal heat source,and a magnetic *** the above effects and assumptions,the equations that administer the flow are formulated.A configured system of equations is productively reduced to a system of ordinary differential *** reduced system is then dealt with using the Runge–Kutta-Fehlberg fourth–fifth order tool equipped by the shooting *** numerical solutions are utilized to plot graphs and *** conclusion of the study outlines some important findings such as the power law index,the thermal radiation parameter and the heat source parameter enhance the thermal panel whereas the Weissenberg number deescalates the *** power law index and permeable velocity decrease the velocity panel *** representation of streamlines of the flow has been given to strengthen the study.A detailed description has been produced about the results obtained in the study.

关键词： sensor surface Carreau fluid squeezed flow thermal radiation heat generation

3D printing of patient-specific 316L–stainless–steel medical implants using fused filament fabrication technology: two veterinary case studies

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Bio-Design and Manufacturing 2022年第4期5卷 808-815页

作者： j.M.Chacón P.j.núñez M.A.Caminero E.García-Plaza j.Vallejo M.Blanco Escuela Técnica Superior de Ingeniería Industrial Universidad de Castilla-La ManchaAvdaCamilo JoséCela213071 Ciudad RealSpain Protresde Ingeniería y Soluciones C/Solana 60nave 313005 Ciudad RealSpain

Biomedical fracture fixation implants have complex sculptured geometries to adapt perfectly to fractured bones,making them difficult and expensive to manufacture with conventional machining methods. Fused filament fabrication(FFF) is a very popular Additive Manufacturing technology that simplifies the manufacture of parts with complex geometries, making it ideal for the manufacture of customized medical implants.

关键词： steel fracture fused

Combustion synthesis of Ce^(3+), Eu^(3+) and Dy^(3+) activated naCaPO_4 phosphors

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journal of Rare Earths 2011年第6期29卷 527-535页

作者： K n Shinde S j Dhoble Animesh Kumar Department of Physics RTM Nagpur University national Environmental Engineering Research Institute

The preparation of naCaPO4 doped with rare earth （RE） ions Ce3＋, Eu3＋ and Dy3＋ by combustion method was described. Under UV excitation （251 nm） of naCaPO4：Ce3＋ showsd emission （367 nm） in UV range. When naCaPO4：Dy3＋ phosphor was excited at 349 nm, the emission spectrum showed intense bands at 482 nm （blue） and 576 nm （yellow）. In Eu activated naCaPO4 phosphor, the emission spectrum showed a dominant peak at 594 nm （orange） while others were at 614 and 621 nm （red） when excited at 393 nm. The prepared phosphor was characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM） and photoluminescence （PL） measurement. Thus, the photoluminescence behavior of naCaPO4：Ce3＋ was strongly suggested for scintillator. Likewise, Eu3＋ and Dy3＋ activated naCaPO4 phosphors were recommended for near-UV white light-emitting diodes （LEDs）.

关键词： combustion synthesis photoluminescence phosphor scintillator solid state lighting rare earths

Effect of papaya seed extract on microenvironment of cauda epididymis

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Asian journal of Andrology 2001年第2期3卷 143-146页

作者： R.j.Verma n.j.Chinoy Department of Zoology University School of Sciences Gujarat University Ahmedabad 380009 IndiaDepartment of Zoology University School of Sciences Gujarat University Ahmedabad 380009 India

Aim: To evaluate the effect of aqueous Carica papaya seed extract on microenvironment of cauda ***: Adult male albino rats were intramuscularly administered with 0 (control) or 0.5 mg papaya seed ex-tract/kg body weight for 7 days. Cauda epididymal tubular content was collected by micropuncture technique; epididy-mal luminal fluid and sperm pellets were separately analyzed. Results: The results revealed that the extract treat-ment caused significant reduction, as compared with control, in total protein and sialic acid contents in both epididymalfluid and sperm pellet. As compared with control, significantly lowered acid phosphatase activity was recorded in spermpellet but was higher in epididymal fluid after the treatment. The extract treatment also caused significant reduction inlevel of inorganic phosphorus in the epididymal fluid. Conclusion: It is concluded that the aqueous papaya seed ex-tract alters cauda epididymal microenvironment.

关键词： Carica papaya microenvironment epididymis spermatozoa protein sialic acid

novel layered pesticide slow/controlled release materials——supramolecular structure and slow release property of glyphosate intercalated layered double hydroxides

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Chinese Science Bulletin 2005年第8期50卷 745-751页

作者： MEnGjinhong ZHAnGHui DavidG.evans DUAnXue MinistryofEducationKeyLaboratoryofScienceandTechnologyofControllableChemicalReactions BeijingUniversityofChemicalTechnologyBeijing100029China

Two different interlayer structured glyphosate (GLY) intercalated MgAl layered double hydroxides, as novel pesticide slow/controlled release materials, have been synthesized by co-precipitation method under various reac- tion pH values. The slow/controlled release properties have been tested in na2CO3 aqueous solution. The release mecha- nism has been interpreted on the basis of the ion-exchange between the guest GLY anions in the lamellar host and 23CO ? in the release media, and the diffusion process of GLY anions in the interstice and interlayer of GLY intercalates, i.e diffusion through the particles, is the rate-limiting step of GLY release process. The GLY intercalate assembled at lower pH, possessing higher interlayer gallery height and vertical monolayered arrangement of guest anions in the interlayer with larger packing density, exhibits better slow release property than that assembled at higher pH. The re- sults reveal that the layered double hydroxides have potential application in the pesticide slow/controlled release area.

关键词：草甘膦杀虫剂氢氧化物原料释放控制

Biquadratic exchange interactions in two-dimensional magnets

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npj Computational Materials 2020年第1期6卷 424-434页

作者： Alexey Kartsev Mathias Augustin Richard F.L.evans Kostya S.novoselov Elton j.G.Santos School of Mathematics and Physics Queen’s UniversityBelfast BT71NNUK Department of Physics The University of YorkYork YO105DDUK Department of Material Science&Engineering National University of SingaporeBlock EA9 Engineering Drive 1Singapore 117575Singapore Chongqing 2D Materials Institute Liangjiang New AreaChongqing 400714China Institute for Condensed Matter Physics and Complex Systems School of Physics and AstronomyThe University of EdinburghEdinburgh EH93FDUK

Magnetism in recently discovered van der Waals materials has opened several avenues in the study of fundamental spin interactions in truly two-dimensions.A paramount question is what effect higher-order interactions beyond bilinear Heisenberg exchange have on the magnetic properties of few-atom thick *** we demonstrate that biquadratic exchange interactions,which is the simplest and most natural form of non-Heisenberg coupling,assume a key role in the magnetic properties of layered *** a combination of nonperturbative analytical techniques,non-collinear first-principles methods and classical Monte Carlo calculations that incorporate higher-order exchange,we show that several quantities including magnetic anisotropies,spin-wave gaps and topological spin-excitations are intrinsically renormalized leading to further thermal stability of the layers.

关键词： exchange quadratic magnets

Mouse cerebellar Purkinje cell damage induced by diphenylhydantoin acute intoxication

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BIOCELL 2015年第2期39卷 33-39页

作者： Orlando j.CASTEjÓn Biological Research Institute and Faculty of Medicine Zulia UniversityMaracaiboVenezuela

Twenty one days old Swiss albino mice that received diphenylhydantoin(25 mg/kg,i.p.,daily for 15 days)progressively developed gait alterations,changes of behavior and cerebellar *** slices were processed by conventional transmission electron *** body of Purkinje cells exhibited fragmented limiting plasma membranes,dilated nuclear envelopes,swelling and disassembly of nuclear pores,enlargement of rough and smooth endoplasmic reticulum and a notable detachment of membrane associated ribosomes,to-gether with distorted vacuoles of smooth endoplasmic reticulum,bizarre shaped and swollen mitochondria with dilated cristae,as well as disrupted limiting lysosomal *** axosomatic synapses apparently corresponding to basket cell axonal endings were *** Purkinje cell axon initial segments exhibited vacuolar degeneration of myelin sheath,dilated axoplasmic tubular bundles,fragmented axonal mem-branes,swollen mitochondria,and disassembly of cytoskeletal *** edematous and clear secondary and tertiary dendrites exhibited areas of dilated cisterns of smooth endoplasmic reticulum,clear and dark mul-tivesicular bodies,and coated *** dendritic ramifications exhibited an electron dense *** and large climbing fiber endings were observed making axodendritic synapses with edematous Purkinje *** presynaptic endings appeared depleted or containing few synaptic *** syn-apses did not exhibit pre-and postsynaptic *** the molecular layer,the edematous synaptic varicosities of parallel fibers containing pleomorphic synaptic vesicles and dense extravesicular substance were observed making asymmetric synaptic contacts with swollen Purkinje dendritic *** findings are postulated as pathogenic mechanisms of mouse cerebellar ataxia.

关键词： Purkinje cell cytotoxic edema diphenylhydantoin toxicity electron microscopy

Correlative microscopy of Purkinje cells

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BIOCELL 2012年第1期36卷 1-29页

作者： ORLAnDO j.CASTEjÓn Instituto de Investigaciones Biologicas“Drs.Orlando Castejón and Haydee Viloria de Castejón”.Facultad de Medicina.Universidad del Zulia.Maracaibo.Venezuela

The Purkinje cell and their synaptic contacts have been described using(1)light microsocopy,(2)transmission and scanning electron microscopy,and freeze etching technique,(3)conventional and field emission scanning electron microscopy and cryofracture methods,(4)confocal laser scanning microscopy using intravital stain FM64,and(5)immunocytochemical techniques for Synapsin-I,PSD9-5,GluR1 subunit of AMPA receptors,n-cadherin,and CamKII *** outer surface and inner content of plasma membrane,cell organelles,cytoskeleton,nucleus,dendritic and axonal processes have been exposed and analyzed in a three-dimensional *** intramembrane morphology,in bi-and three-dimensional views,and immunocytochemical labeling of synaptic contacts with parallel and climbing fibers,basket and stellate cell axons have been *** etching technique,field emission scanning microscopy and cryofracture methods,and GluR1 immunohistochemistry showed the morphology and localization of postsynaptic *** cell shows n-cadherin and CamKII alpha *** correlative microscopy approach provides a deeper understanding of structure and function of the Purkinje cell,a new three-dimensional outer and inner vision,a more detailed study of afferent and intrinsic synaptic junctions,and of intracortical circuits.

关键词： cerebellar cells synaptic contacts electron microscopy immunohistochemistry