检索结果-南通市图书馆

Charge self-trapping in two strand biomolecules:Adiabatic polaron approach

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2023年第1期32卷 253-263页

作者： D Chevizovich S Zdravković A V Chizhov Z ivić University of Belgrade Vinča Institute of Nuclear SciencesP.O.Box 522Belgrade 11001Serbia Joint Institute for Nuclear Research Laboratory for Radiation BiologyDubna 141980Russia Dubna State University Dubna 141980Russia Department of Physics University of CreteP.O.Box 2208Heraklion 71003Greece National University of Science and Technology MISiS Leninsky prosp.4Moscow 119049Russia

We investigate the properties of the excess charge(electron, hole) introduced into a two-strand biomolecule. We consider the possibility that the stable soliton excitation can be formed due to interaction of excess charge with the phonon subsystem. The influence of overlap of the molecular orbitals between adjacent structure elements of the macromolecular chain on the soliton properties is discussed. Special attention is paid to the influence of the overlapping of the molecular orbitals between structure elements placed on the different chains. Using the literature values of the basic energy parameters of the two-chain biomolecular structures, possible types of soliton solutions are discussed.

关键词： charge self-trapping adiabatic polaron soliton two-stranded biomolecules

The vibron dressing in α-helicoidal macromolecular chains

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2013年第6期22卷 218-227页

作者： D.evizovi S. Galovi A. Reshetnyak Z. ivi University of Belgrade Vina Institute of Nuclear Sciences Laboratory for Theoretical and Condensed Matter PhysicsP. O. Box 522 11001 Belgrade Serbia Joint Institute for Nuclear Research Bogoliubov Laboratory for Theoretical Physics Dubna Russia Laboratory of Non-Linear Media Physics Institute of Strength Physics and Materials ScienceTomsk 634021 Russia

We present a study of the physical properties of the vibrational excitation in α-helicoidal macromolecular chains, caused by the interaction with acoustical and optical phonon modes. The influence of the temperature and the basic system parameters on the vibron dressing have been analyzed by employing the simple mean-field approach based on the variational extension of the Lang-Firsov unitary transformation. The applied approach predicts a region in system parameter space where one has an abrupt transition from a partially dressed （light and mobile） to a fully dressed （immobile） vibron state. We found that the boundary of this region depends on system temperature and the type of bond among structural elements in the macromolecular chain.

关键词： vibron small-polaron α-helix partial dressing

在线全文

学校读者我要写书评

暂无评论

梯度弹性的虚拟单元公式

Acta Mechanica Sinica 2023年第4期39卷 84-96页

作者： Peter Wriggers blaž Hudobivnik Institute for Continuum Mechanics Leibniz Universität HannoverHannoverGermany

虚拟单元法在过去十年中得到了发展,并应用于固体力学中的问题.目前已使用了不同的公式来解释该方法的顺序和稳定性,并应用到包括弹性和非弹性材料以及压裂过程的多种问题中.本文利用虚拟单元法固有的可能性,以简单有效的方式,建立C^(1... 详细信息

虚拟单元法在过去十年中得到了发展,并应用于固体力学中的问题.目前已使用了不同的公式来解释该方法的顺序和稳定性,并应用到包括弹性和非弹性材料以及压裂过程的多种问题中.本文利用虚拟单元法固有的可能性,以简单有效的方式,建立C^(1)连续的弹性函数,研究固体高梯度弹性理论的虚拟单元公式.

关键词：虚拟单元弹性理论弹性材料弹性函数固体力学高梯度

New era of electrochemotherapy in treatment of liver tumors in conjunction with immunotherapies

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

World Journal of Gastroenterology 2021年第48期27卷 8216-8226页

作者： blažTrotovšek Mihajlo Djokić MajaČemažar Gregor serša Department of Abdominal Surgery University Medical Centre LjubljanaLjubljana 1000Slovenia Medical Faculty Ljubljana University of LjubljanaLjubljana 1000Slovenia Department of Experimental Oncology Institute of OncologyLjubljana 1000Slovenia Faculty of Health Sciences University of PrimorskaIzola 6310Slovenia Faculty of Health Sciences University of LjubljanaLjubljana 1000Slovenia

Electrochemotherapy is a local ablative therapy that increases the cytotoxicity of either bleomycin or cisplatin by applying electric pulses(electroporation)to *** has already been widely used throughout Europe for the treatment of various types of human and veterinary cutaneous tumors,with an objective response rate ranging from 70%-90%,depending on the tumor ***,electrochemotherapy was introduced for the treatment of primary liver tumors,such as hepatocellular carcinoma(HCC).The complete response rate was 85%per treated lesion,with a durable ***,electrochemotherapy could become a treatment of choice for HCC,especially after achieving a transition from an open surgery approach to a percutaneous approach that uses dedicated *** elicits a local immune response and can be considered an in situ ***,among others,is a potentially immunogenic tumor;thus,electrochemotherapy could boost adjuvant immunotherapy to achieve a better and longer-lasting antitumor ***,therapeutic strategies that combine electrochemotherapy with immune checkpoint inhibitors or adjuvant treatment with cytokines are indicated for *** therapy using electroporation as a delivery system for plasmid DNA coding for interleukin-12 is a highly promising *** electroporation approach has shown efficacy in preclinical settings and veterinary oncology and is awaiting translation for the treatment of liver tumors,i.e.,HCC.

关键词： Electroporation Electrochemotherapy Gene therapy Gene electrotransfer Interleukin-12 Immune checkpoint inhibitors Hepatocellular carcinoma

Dual Zariski Spaces of Modules

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

Algebra Colloquium 2023年第4期30卷 569-584页

作者： seçilÇeken Department of Mathematics Trakya UniversityEdirneTurkey

Let R be a commutative ring with identity,M be an R-module,L(M)denote the set of all submodules of M and g■(M)\{OM}.For any submodule N of M,we set gV^(d)(N)={K∈g:K■N}and gζ^(d)(M)=(GV^(d)(N):N■L(M)).Consider χ■L(R)\{R},where L(R)is the set of all ideals of *** set χV(I)=(J∈x:I■J)and χζ(R)={xV(I):I■L(R)}for any ideal I of *** this paper,we investigate when,for arbitrary χ and g as above,χζ(R)and gζ^(d)(M)form a topology and a semimodule,*** investigate the structure of gζ^(d)(M)in the case that it is a semimodule.

关键词： dual Zariski semimodule χ-Zariski semiring ·-coprime submodule subtractive subspace

Theoretical insights of the pharmaceutical compound fluoxetine in water:Role in direct photolysis and indirect photolysis by free radicals

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 Environmental Sciences 2024年第8期142卷 269-278页

作者： Ying Lu se Wang Yifan Shen School of Environmental Science and Engineering Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyJiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlNanjing University of Information Science and TechnologyNanjing 210044China

The frequent detection of pharmaceutical compounds in the environment has led to a growing awareness,which may pose a major threat to the aquatic *** this study,photodegradation(direct and indirect photolysis)of two different dissociation states of fluoxetine(FLU)was investigated in water,mainly including the determination of photolytic transition states and products,and the mechanisms of indirect photodegradation with·OH,CO_(3)^(*-)and NO_(3)^(*).The main direct photolysis pathways are defluorination and C–C bond *** addition,the indirect photodegradation of FLU in water is mainly through the reactions with·OH and NO_(3)^(*),and the photodegradation reaction with CO_(3)^(*-)is relatively difficult to occur in the water *** results provide a theoretical basis for understanding the phototransformation process of FLU in the water environment and assessing its potential risk.

关键词： Fluoxetine Photochemical mechanism Direct photolysis Free radical reaction DFT

Structural,electronic and elastic properties of YCu from first principles

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2009年第4期27卷 661-663页

作者： G.Ugur M.ivi S.Ugur F.Soyalp R.Ellialt1oglu Department of Physics Gazi University Teknikokullar Ankara 06500 Turkey Department of Physics Yüzüncü Yll University Zeve Kampüsü Van 65080 Turkey Department of Physics Engineering Hacettepe University Beytepe Ankara 06800 Turkey

The structural, electronic and elastic properties of YCu compound in the B2 （CsCl） phase were investigated using the density functional theory （DFT） within the generalized gradient approximation （GGA）. The electronic density of states （DOS） obtained in this way accorded weU with the results of a recent study utilizing the full-potential linearized augmented plane wave （FLAPW） method. We also found that the density of d-states at the Fermi energy was low. The calculated equilibrium properties such as lattice constant, bulk modulus and its first derivative, and the elastic constants were in good agreement with experimental and theoretical results.

关键词： YCu, electronic band structure, density of states, elastic constants, bulk modulus, ab initio rare earths

Re-visiting supersymmetric Janus solutions: a perturbative construction

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2020年第7期44卷 43-54页

作者： Nakwoo Kim se-Jin Kim Department of Physics and Research Institute of Basic Science Kyung Hee UniversitySeoul 02447Republic of Korea

We construct holographic Janus solutions,which describe a conformal interface in the theory of M2-branes,in four-dimensional gauged supergravities using a perturbative *** particular,we study three Einsteinscalar systems and their BPS equations,which are derived by Bobev,Pilch,and Warner(2014).The actions of our interest are all consistent truncations of D=11 supergravity,chosen to be invariant under SO(4)×SO(4),SU(3)×U(1)×U(1),and G2 symmetry subgroups of SO(8).The utility of our semi-analytic result is illustrated by the calculation of minimal area surface and the associated holographic entanglement entropy.

关键词： holography Janus solutions supergravity entanglement entropy

On the Function of Wall Sculpturing in Xylem Conduits

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2009年第4期6卷 324-329页

作者： Mika M.Kohonen se Helland Department of Physical Sciences University of HullCottingham RoadHU6 7RX UK

The water-conducting network of capillaries in vascular plants has evolved over hundreds of millions of years in order to be able to cope with bubble clogging,a problem which also affects modern microfluidic *** of anatomical studies have revealed that plants growing in habitats in which the formation of bubbles,or emboli,is likely to be a frequent occurrence often have various forms of geometrical sculpturing on the internal surfaces of the xylem *** possible function of such wall sculpturing has long been the subject of *** have investigated the hypothesis that wall sculpturing is a functional adaptation designed to increase the wettability of the walls of xylem conduits,an effect which could be described as the inverse of the well-known *** results show that wall sculpturing does enhance ***,theoretical calculations reveal that the geometric parameters of various types of wall sculpturing are such that the resulting surfaces are sufficiently rough to enhance wettability,but not significantly *** results provide an appealing answer to the long-standing debate on the function of wall sculpturing in xylem conduits,and may provide biomimetic clues for new approaches to the removal of bubbles in microfluidic channels.

关键词： xylem wettability capillary wall sculpturing bubble emboli microfluidic