检索结果-南通市图书馆

Dynamics of 7Li breakup and its influence on elastic scattering: a study of 7Li + 144Sm system

在线全文

学校读者我要写书评

暂无评论

Chinese physics C 2024年第2期48卷 124-134页

作者： A.Morzabayev n.Amangeldi Awad A.Ibraheem D.Soldatkhan g.Yergaliuly B.Mauyey Anuar.A.Orazalievna sh.Hamada L.n.gumilyov eurasian national university astanakazakhstan Institute of nuclear physics almatykazakhstan physics department king khalid universityabhasaudi arabia Faculty of science tanta universitytantaegypt

The angular distributions of 7Li+144Sm elastic scattering over the energy range of 21.6–52 MeV are reanalyzed utilizing various interaction *** analysis aims to study the consistency of the implemented potentials in representing the considered data and investigate the cluster nature of the weakly bound 7Li *** will aid in the better understanding the impacts of 7Li breakup on the elastic scattering *** coupling to the breakup channel has a substantial impact on the elastic data and reproduces a repulsive dynamical polarization potential,which drastically diminishes the real potential *** reported impact was simulated by introducing a semi-microscopic repulsive Dpp and by implementing the method of continuum discretized coupled *** analysis was also extended to understand the impact of triton transfer on the elastic scattering data.

关键词： phenomenological and semi-microscopic potentials cluster folding dynamic polarization

Magnetic resonance imaging-guided focused ultrasound thalamotomy launch with remote telemedicine international proctorship

在线全文

学校读者我要写书评

暂无评论

Chronic Diseases and Translational Medicine 2024年第1期10卷 40-50页

作者： Igor V.Buzaev Rezida M.galimova Dinara I.nabiullina Sergey n.Illarioshkin naufal sh.Zagidullin shamil M.Safin Department of Surgery Bashkir State Medical UniversityUfaRussia Intelligent neurosurgery Clinic Ltd.International Medical Center V.S.Buzaev memorialUfaRussia Directorate Research Center of NeurologyVolokolamskoye ShosseMoscowRussia

Background: COVID-19 limitations have hindered the implementation of new technologies by preventing proctors from coming to the *** share our first experience of magnetic resonance imaging(MRI)-guided focused ultrasound(MRgFUS)treatment with an international remote online proctorship,and develop and evaluate the methodology of remote MRgFUS ***: This single-center,nonrandomized controlled prospective study included 94 patients:27 with essential tremor(ET)and 67 with tremor-dominant parkinson's disease(pD).The coming of proctors was impossible,so we arranged for the remote participation of proctors from the United Kingdom,Spain,and Israel.A total of 38 patients(40.4%)received telemedicine-proctored treatment(proctor group)and 56 received their treatment independently(solo group).We used the Clinical Rating Scale for Tremor(CRST)for ET patients and the Unified parkinson's Disease Rating Scale(UpDRS)part III for pD ***: In patients with ET,success rates were 81.8%(proctor group)and 100%(solo group)(p=0.22).CRST reduction on the treated side was 71.43%[65.83%;80.56%](proctor group)versus 60.87%[53.99;79.58](solo group)(p=0.19).none of the patients showed worsening of tremors within 1 *** patients with pD,the success rates were 92.6%(proctor group)and 100%(solo group)(p=0.08).The UpDRS part III improvement was 30.1%(proctor group)versus 39.9%(solo group)(p=0.003).The 1-year recurrence rate was 40%(proctor group)and 17.5%(solo group)(p=0.04).no complications were observed at 6 ***: We developed a feasible and safe methodology for telemedicine remote online-proctored MRgFUS *** significant difference was observed between the solo and developed remote proctor protocols in terms of complication rate,effect,and long-term results;however,UpDRS part III improvement was better in the pD solo *** study demonstrated that the MRgFUS international proctorship can be performed successfully remotely.

关键词： essential tremor MRgFUS parkinson's disease proctor telemedicine

nanoscale potential barrier distributions and their effect on current transport in ni/n type Si Schottky diode

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2015年第12期36卷 74-80页

作者： M.Yeganeh n.Balkanian sh.Rahmatallahpur West north Research Complex

We have experimentally studied the ni/n-Si nano Schottky barrier height （SBH） and potential difference between patches in the nano Schottky diodes （SD） using contact atomic force microscopy （C-AFM） in tapping mode and scanning tunneling microscopy （STM）. Topology measurement of the surface with C-AFM showed that, a single ni/n-Si SD consists of many patches with different sizes. These patches are sets of parallel diodes and electrically interacting contacts of 5 to 50 nm sizes and between these individual diodes, there exists an additional electric field. In real metal semiconductor contacts （MSC）, patches with quite different configurations, various geometrical sizes and local work functions were randomly distributed on the surface of the metal. The direction and intensity of the additional electric field are distributed in homogenously along the contact metal surface. SBH controls the electronic transport across the MS interface and therefore, is of vital importance to the successful operation of semiconductor devices.

关键词： nano Schottky diode additional electrical field nanopatch STM and C-AFM

Tameness and Artinianness of graded generalized Local Cohomology Modules

在线全文

学校读者我要写书评

暂无评论

Algebra Colloquium 2015年第1期22卷 131-146页

作者： M. Jahangiri n. shirmohammadi sh. Tahamtan Faculty of Mathematical sciences and Computer Kharazmi University rlbhran Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5749 Tehran Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5749 rlbhran Iran Department of Mathematics University of Tabriz Tabriz Iran Islamic Azad University Borujerd Branch Boroujerd Iran

Let R = ⊙n〉0 Rn be a standard graded ring, a ∩ ⊙n〉0 Rn an ideal of R, and M, n two finitely generated graded R-modules. This paper studies the homogeneous components of graded generalized local cohomology modules. We show that for any i 〉 0, the n-th graded component Hiα（M, n）n of the i-th generalized local cohomology module of M and n with respect to a vanishes for all n 〉〉 0. Some sufficient conditions are pro- posed to satisfy the equality sup{end（Hiα （M, n）） [ i _〉 0} = sup{end（HiR＋（M, n））｜ i 〉 0}. Also, some sufficient conditions are proposed for the tameness of Hiα（M, n） such that i = fRα＋（M,n） or i = cdα（M,g）, where fRα＋（M,n） and cdα（M,g） denote the R＋- finiteness dimension and the cohomological dimension of M and n with respect to a, respectively. Finally, we consider the Artinian property of some submodules and quotient modules of Hjα（M, n）, where j is the first or last non-minimax level of Hiα（M, n）.

关键词： graded rings and modules generalized local cohomology Artinian modules,tameness

Sorption of certain lanthanides by kieselguhr loaded with Cyanex 572 from sulfate medium

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2020年第3期38卷 299-305页

作者： sh.sh.Emam M.S.gasser n.E.El-Hefny W.H.Mahmoud H.F.Aly Hot Laboratories Centre Atomic Energy AuthorityCairo 13759Egypt Department of Chemistry Faculty of ScienceAin Shams UniversityCairoEgypt

Kieselguhr for chromatography was loaded with Cyanex 572 extractant and characterized using X-ray diffraction(XRF),scanning electron microscopy(SEM),Fourier transform infra-red(FT-IR),and thermal *** of some heavy lanthanides together with yttrium by the prepared kieselguhr/Cy-572 sorbent was investigated by batch experiment in terms of initial metal ions concentrations,volume to solid mass ratio(V/m),sulfuric acid concentration as well as *** sorption equilibrium of Cy-572 loaded kieselguhr was satisfactorily explained by the pseudo second-order kinetic model and Langmuir isotherm ***,the values of thermodynamic parameters △g°,△H°,and △S°at25℃of the studied metal ions show that the process is spontaneous and endothermic in nature.2.0 mol/L HnO3 is promising to desorb these metal ions.

关键词： Sorption Cyanex 572 Lanthanides Kieselguhr Sulfate medium Rare earths

Experimental and numerical study on plasma nitriding of AISI p20 mold steel

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2016年第9期23卷 1065-1075页

作者： n.nayebpashaee H.Vafaeenezhad sh.Kheirandish M.Soltanieh Materials processing Simulation Laboratory(MpS-LAB) School of Materials and Metallurgical EngineeringIran University of Science and Technology(IUST) School of Materials and Metallurgical Engineering Iran University of Science and Technology(IUST)

In this study, plasma nitriding was used to fabricate a hard protective layer on AISI p20 steel, at three process temperatures（450℃, 500℃, and 550℃） and over a range of time periods（2.5, 5, 7.5, and 10 h）, and at a fixed gas n2：H2 ratio of 75vol%：25vol%. The morphology of samples was studied using optical microscopy and scanning electron microscopy, and the formed phase of each sample was determined by X-ray diffraction. The elemental depth profile was measured by energy dispersive X-ray spectroscopy, wavelength dispersive spectroscopy, and glow dispersive spectroscopy. The hardness profile of the samples was identified, and the microhardness profile from the surface to the sample center was recorded. The results show that ε-nitride is the dominant species after carrying out plasma nitriding in all strategies and that the plasma nitriding process improves the hardness up to more than three times. It is found that as the time and temperature of the process increase, the hardness and hardness depth of the diffusion zone considerably increase. Furthermore, artificial neural networks were used to predict the effects of operational parameters on the mechanical properties of plastic mold steel. The plasma temperature, running time of imposition, and target distance to the sample surface were all used as network inputs; Vickers hardness measurements were given as the output of the model. The model accurately reproduced the experimental outcomes under different operational conditions; therefore, it can be used in the effective simulation of the plasma nitriding process in AISI p20 steel.

关键词： tool steel plasma nitriding sputtering neural networks

Comparative studies on Y(Ⅲ)and Dy(Ⅲ)extraction from hydrochloric and nitric acids by Cyanex 572 as a novel extractant

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2018年第12期36卷 1342-1350页

作者： n.E.El-Hefny M.S.gasser sh.sh.Emam W.H.Mahmoud H.F.Aly Hot Laboratories Centre Atomic Energy Authority Faculty of Science Ain Shams University

Extraction of Y(III) and Dy(III) from hydrochloric and nitric acids by Cy-572 in kerosene was studied. The factors affecting the extraction were separately investigated. The stoichiometry of the extracted species was deduced on the basis of slope analysis method. Evaluation of extraction equilibrium and stripping investigation was studied as well as saponification effect of Cy-572. The composition of the extracted metal species in the organic phase was found to be [MA·(HA)] for Y(III) or Dy(III) in both media.1.0 mol/L HCI is the best stripping agent for each metal ion from the studied acidic media in one *** Cy-572 does not exhibit any selectivity towards the extraction of Y(III) or Dy(III) from both HCI and HnOsolutions. Based on the obtained results, the data were compared and the separation feasibility between lanthanides and Y(III) in the two media was discussed.

关键词： Extraction Cyanex-572 Yttrium Lanthanides Separation factor Saponification

在线全文

学校读者我要写书评

暂无评论

产业链韧性测度方法研究进展

经济学动态 2024年第4期 144-160页

作者：肖兴志王振宇李少林东北财经大学产业组织与企业组织研究中心 116025

产业链韧性测度是识别“断链”风险和维护产业链安全稳定的现实抓手,成为新时代应对、把握和引领大变局亟待解决的热点问题。本文在分析产业链韧性测度现实需求的基础上,从产业链韧性测度的理论基础、方法类型、应用步骤三个方面就经典... 详细信息

产业链韧性测度是识别“断链”风险和维护产业链安全稳定的现实抓手,成为新时代应对、把握和引领大变局亟待解决的热点问题。本文在分析产业链韧性测度现实需求的基础上,从产业链韧性测度的理论基础、方法类型、应用步骤三个方面就经典文献进行述评。首先,围绕恢复、抵抗、适应与变革四大能力追溯概念界定、内涵特征和学科交叉的理论起源;其次,系统梳理了以核心变量法、综合评价法及投入产出法为代表的产业链韧性评价方法,剖析了各自优点与相对不足;最后,全面厘清了“冲击识别—结构分析—韧性评价”框架下的韧性测度理论与方法应用。本文认为,产业链韧性测度方法的选取及应用须高度重视学科交叉的应用场景,廓清理论模型的适用条件,为测度和增强产业链韧性提供多样化、稳健性的方法支撑。

关键词：产业链韧性经济韧性测度方法

Invertebrate Iridovirus Modulation of Apoptosis

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2009年第4期24卷 295-304页

作者： Trevor Williams nilesh S. Chitnis shn L. Bilimoria Instituto de Ecología AC Abramson Cancer Center and Department of Cancer Biology University of Pennsylvania Department of Biological Sciences The Center for Biotechnology and Genomics Texas Tech University

programmed cell death （apoptosis） is a key host response to virus infection. Viruses that can modulate host apoptotic responses are likely to gain important opportunities for transmission. Here we review recent studies that demonstrate that particles of Invertebrate iridescent virus 6 （IIV-6）（Iridoviridae, genus Iridovirus）, or an IIV-6 virion protein extract, are capable of inducing apoptosis in lepidopteran and coleopteran cells, at concentrations 1000-fold lower than that required to shut-off host macromolecular synthesis. Induction of apoptosis depends on endocytosis of one or more heat-sensitive virion component（s）. Studies with a JnK inhibitor （Sp600125） indicated that the JnK signaling pathway is significantly involved in apoptosis in IIV-6 infections of Choristoneurafumiferana cells. The genome of IIV-6 codes for an inhibitor of apoptosis iap gene （193R） that encodes a protein of 208 aa with 15% identity and 28% similarity in its amino acid sequence to IAp-3 from Cydia pomonella ganulovirus （CpgV）. Transcription of IIV-6 iap did not require prior DnA or protein synthesis, indicating that it is an immediate-early class gene. Transient expression and gene knockdown studies have confirmed the functional nature of the IIV-6 lap gene. We present a tentative model for IIV-6 induction and inhibition of apoptosis in insect cells and discuss the potential applications of these findings in insect pest control.

关键词： Apoptosis Invertebrate iridescent virus 6 Induction by endocytosis Inhibition of apoptosis (iap) gene Iridoviridae JnK pathway involvement.