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A Topological Transformation of Quantum Dynamics

Journal of Modern Physics 2019年第2期10卷 102-127页

作者： Vu b.ho Advanced Study 9 Adela CourtMulgraveAustralia

In this work, we discuss the topological transformation of quantum dynamics by showing the wave dynamics of a quantum particle on different types of topological structures in various dimensions from the fundamental polygons of the corresponding universal covering spaces. This is not the view from different perspectives of an observer who simply uses different coordinate systems to describe the same physical phenomenon but rather possible geometric and topological structures that quantum particles are endowed with when they are identified with differentiable manifolds that are embedded or immersed in Euclidean spaces of higher dimension. We present our discussions in the form of bohr model in one, two and three dimensions using linear wave equations. In one dimension, the fundamental polygon is an interval and the universal covering space is the straight line and in this case the standing wave on a finite string is transformed into the standing wave on a circle which can be applied into the bohr model of the hydrogen atom. In two dimensions, the fundamental polygon is a square and the universal covering space is the plane and in this case, the standing wave on the square is transformed into the standing wave on different surfaces that can be formed by gluing opposite sides of the square, which include a 2-sphere, a 2-torus, a Klein bottle and a projective plane. In three dimensions, the fundamental polygon is a cube and the universal covering space is the three-dimensional Euclidean space. It is shown that a 3-torus and the manifold K?× S1?defined as the product of a Klein bottle and a circle can be constructed by gluing opposite faces of a cube. Therefore, in three-dimensions, the standing wave on a cube is transformed into the standing wave on a 3-torus or on the manifold K?× S1. We also suggest that the mathematical degeneracy may play an important role in quantum dynamics and be associated with the concept of wavefunction collapse in quantum mechanics.

关键词： Quantum Topology Topological Transformation Quantum Dynamics Differentiable Geometry and Topology Differentiable Manifolds Schrodinger Wave Mechanics bohr Model in One Two and Three Dimensions de broglie Wave-Particle Duality

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A Formulation of Spin Dynamics Using Schrodinger Equation

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Journal of Modern Physics 2019年第11期10卷 1374-1393页

作者： Vu b.ho Advanced Study 9 Adela CourtMulgraveAustralia

In quantum mechanics, there is a profound distinction between orbital angular momentum and spin angular momentum in which the former can be associated with the motion of a physical object in space but the latter cannot. The difference leads to a radical deviation in the formulation of their corresponding dynamics in which an orbital angular momentum can be described by using a coordinate system but a spin angular momentum cannot. In this work, we show that it is possible to treat spin angular momentum in the same manner as orbital angular momentum by formulating spin dynamics using Schrödinger equation in an intrinsic coordinate system. As an illustration, we apply the formulation to the dynamics of a hydrogen atom and show that the intrinsic spin angular momentum of the electron can take half-integral values and, in particular, the intrinsic mass of the electron can take negative values. We also consider a further extension by generalising the formulation so that it can be used to describe other intrinsic dynamics that may associate with a quantum particle, for example, when a hydrogen atom radiates a photon, the photon associated with the electron may also possess an intrinsic dynamics that can be described by an intrinsic wave equation that has a similar form to that for the electron.

关键词： Spin Angular Momentum Spin Dynamics Orbital Angular Momentum Schrodinger Equation Half-Integer Values Intrinsic Coordinate Systems Negative Mass

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Innovative seismic retrofitting strategy of added stories isolation system

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Frontiers of Structural and Civil Engineering 2013年第1期7卷 13-23页

作者： Min-ho CHEY J.Geoffrey CHASE John b.MANDER Athol J.CARR School of Architecture&Art Yanbian University of Science&TechnologyYanji 133000China Department of Mechanical Engineering University of CanterburyChristchurch 8140New Zealand Zachry Department of Civil Engineering Texas A&M UniversityTexas 77843USA Department of Civil&Natural Resources Engineering University of CanterburyChristchurch 8140New Zealand

The seismic performance of“added stories isolation”(ASI)systems are investigated for 12-story moment resisting *** newly added and isolated upper stories on the top of the existing structure are rolled to act as a large tuned mass damper(TMD)to overcome the limitation of the size of tuned mass,resulting to“12+2”and“12+4”stories building *** isolation layer,as a core design strategy,is optimally designed based on optimal TMD design principle,entailing the insertion of passive flexible laminated rubber bearings to segregate two or four upper stories from a conventionally constructed lower superstructure *** performance metrics are presented for 30 earthquake records from the 3 suites of the SAC *** history analyses are used to compute various response performances and reduction factors across a wide range of seismic hazard *** show that ASI systems can effectively manage seismic response for multi-degree-of freedom(MDOF)systems across a broader range of ground motions without requiring burdensome extra *** results include the identification of differences in the number of added story by which the suggested isolation systems remove energy.

关键词： added stories seismic isolation tuned mass damper parametric optimization statistical method

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Chemical modification of ordered/disordered carbon nanostructures for metal hosts and electrocatalysts of lithium-air batteries

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InfoMat 2022年第1期4卷 105-129页

作者： Jeongyeon Lee Tae Hyung Lee ho Won Jang ho Seok Park School of Chemical Engineering Convergence Research Center for Energy and Environmental SciencesDepartment of Health Sciences and TechnologySamsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan University(SKKU)SuwonRepublic of Korea Institute of Textiles Clothing The Hong Kong Polytechnic UniversityHung HomHong Kong SARChina Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea

Although lithium-air batteries(LAbs)are considered the promising alternative of existing lithium–ion batteries owing to their high energy density of 11680 W h kg^(-1),their practical applications are limited by the technical issues,such as unstable solid electrolyte interface and dendrite formation from metal anode and insufficient bifunctional activities and durability from cathode *** order to resolve these bottlenecks,carbon nanostructures have been investigated owing to their high surface area,excellent electrical conductivity,electrochemical stability,and various modification ***,we comprehensively review a recent progress on the design of carbon nanostructures for their applications into metal hosts,protection layers,and bifunctional electrocatalysts of *** correlation between the crystalline,electronic,porous,and chemical structures and the electrochemical properties of carbon nanomaterials are discussed depending on their classification and *** chemical modifications,such as morphological control,hierarchical architecturing,heteroatom incorporation,and the formation of composites,for the improved electrochemical performances of anode and cathode will be also ***,we deal with the perspectives for the ongoing obstruction and future guidance.

关键词： bifunctional catalysts carbon nanostructures lithium-air batteries metal anodes surface modification

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Neuroimaging characterization of recovery of impaired consciousness in patients with disorders of consciousness

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Neural Regeneration Research 2019年第7期14卷 1202-1207页

作者： Sung ho Jang Young Hyeon Kwon Department of Physical Medicine and Rehabilitation College of MedicineYeungnam University

Elucidation of critical brain areas or structures that are responsible for recovery of impaired consciousness in patients with disorders of consciousness is important because it can provide information that is useful when developing therapeutic strategies for neurorehabilitation or neurointervention in patients with disorders of *** this review,studies that have demonstrated brain changes during recovery of impaired consciousness were *** studies used positron emission tomography,electroencephalography/transcranial magnetic stimulation,diffusion tensor tractography,and diffusion tensor tractography/*** majority of these studies reported on the importance of supratentorial areas or structures in the recovery of impaired *** important brain areas or structures that were identified were the prefrontal cortex,basal forebrain,anterior cingulate cortex,and parietal *** results have a clinically important implication that these brain areas or structures can be target areas for neurorehabilitation or neurointervention in patients with disorders of ***,most of studies were case reports;therefore,further original studies involving larger numbers of patients with disorders of consciousness are *** addition,more detailed information on the brain areas or structures that are relevant to the recovery of impaired consciousness is needed.

关键词： consciousness vegetative state minimally conscious state ascending reticular activating system diffusion tensor imaging neuroimaging neural regeneration review

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ON THE ASYMPTOTIC DYNAMICS OF THE VLASOV-YUKAWA-bOLTZMANN SYSTEM NEAR VACUUM

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Acta Mathematica Scientia 2015年第4期35卷 887-905页

作者： Sun-ho ChoI Seung-Yeal HA Department of Mathematical Sciences KAIST Department of Mathematical Sciences and Research Institute of Mathematics Seoul National University

In this pape,~ we study uniform L1-stability and asymptotic completeness of the Vlasov-Yukawa-boltzmann （V-Y-b） system. For a sufficiently small rand smooth initial data, we show that classical solutions exist globally and satisfy dispersion estimates, uniform L1-stability with respect to initial data and scattering type estimate. We show that the short range nature of interactions due to the Yukawa potential enables us to construct robust Lyapunov type functional to derive scattering states. In the zero mass limit of force carrier particles, we also show that the classical solutions to the V-Y-b system converge to that of the Vlasov-Poisson-boltzmann （V-P-b） system in any finite time interval

关键词： asymptotic completeness collision operator the Vlasov-Yukawa-boltzmannsystem uniform L1-stability

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基于生态学原理的作物品种混合种植建立

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Journal of Plant Ecology 2023年第6期16卷 46-60页

作者： Emanuel b.Kopp Pascal A.Niklaus samuel E.Wuest Agroscope Group Breeding ResearchDivision Plant BreedingMüller-Thurgau-Strasse 298820 W鋎enswilSwitzerland Department of Evolutionary biology and Environmental Studies and Zurich-basel Plant Science Center University of ZurichWinterthurerstrasse 1908057 ZurichSwitzerland University of Zurich Research Priority Program on Global Change and biodiversity University of Zurich8057 ZurichSwitzerland

作物品种混合种植具有很多有益效应,包括抑制病原体和增加产量和产量稳定性。然而,这些效应并不一定在所有作物品种混合种植中都出现,多样性带来的效应可能会因作物异质性的增加而抵消。在田间建立作物品种混合种植,如果没有预先预测组... 详细信息

作物品种混合种植具有很多有益效应,包括抑制病原体和增加产量和产量稳定性。然而,这些效应并不一定在所有作物品种混合种植中都出现,多样性带来的效应可能会因作物异质性的增加而抵消。在田间建立作物品种混合种植,如果没有预先预测组合哪些基因型可以产生表现良好的混合种植,会导致工作量过于庞大。因此,需要有效的工具来缩减有希望的品种混合种植组合,并在实验中确定其中哪些组合会带来最大效应。在这里,我们首先综述已有的关于生态多样性实验和当前农业应用效应及其机理,然后讨论应用这些知识开发良好品种混合种植组合时出现的一些主要困难。我们还讨论了解决其中一些问题的非常规方法。我们特别强调基于性状确定好的品种混合种植伙伴的潜力和局限性,并认为非传统性状和性状衍生的指标可能需要基于性状的方法来充分发挥其潜力。具体而言,我们认为可以使用现代遗传和基因组方法确定良好的混合种植伙伴。或者,可以通过组合对环境变化做出不同反应的品种(这些品种可以在标准品种测试试验中轻松识别)来获得良好的混作组合。初步分析结果表明,解释对不同环境响应的生态位差异,可以指示功能互补性并提高混合种植组合的产量及其稳定性。

关键词：农业生态学品种混合种植作物多样性群落生态学植物育种病原物/疾病控制产量稳定性

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Synergistic Effect of Graphdiyne-based Electrocatalysts

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Chemical Research in Chinese Universities 2021年第6期37卷 1242-1256页

作者： WONG hon ho SUN Mingzi HUANG bolong Department of Applied biology and Chemical Technology The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARP.R.China

The synergistic effect can help improve the electrocatalyst performances by combining the advantages of individual *** particular,such an effect has been more important in the atomic *** this review,we have summarized the synergistic effect of N,X co-doping graphdiyne[X=b,S,F or transition metal(TM)]electrocatalysts and graphdiyne-based dual-atom catalyst(GDY-DAC).In general,the synergistic cooperation between two different dopants in co-doped GDY and adjacent active sites in GDY-DAC not only promotes their catalytic activity but also greatly enhances the thermodynamic stability of the *** the N,X co-doping GDY electrocatalysts,doping the heteroatoms like boron,sulphur,phosphorus,and fluorine with nitrogen can further tune the charge density distribution and electronic ***,the electron exchange between two doping atoms and GDY substrate has been discussed,where the TM-based GDY-DAC is a very promising catalyst for *** importantly,electronic interactions between different elements on GDY have been carefully *** the end,we have also supplied perspectives to the future developments of the GDY-based electrocatalysts.

关键词： Graphdiyne(GDY) Electrocatalyst Synergistic effect Dual-atom catalyst co-Doped GDY

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Stabilized composition of 26 mg/mL of high molecular weight HA for subcutaneous injection to improve skin quality

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Plastic and Aesthetic Research 2022年第1期9卷 564-575页

作者： samuel Gavard Molliard Jérémie bon bétemps basste Hadjab Anas Ghazal Mhd badi Marco Cerrano Department of Research and Development Kylane Laboratoires SAPlan-les-Ouates 1228Switzerland Department of Clinic Derma ClinicJeddah 23432Saudi Arabia Department of Clinic Art ClinicRiyadh 12432Saudi Arabia Department of Clinic Entourage CliniqueLausanne 1003Switzerland

Aim:Skin firmness is one of the key parameters to define skin quality and facial *** the minimally invasive anti-aging strategies,hyaluronic acid(HA)injection is widely accepted to improve skin *** most of the available HA injectables are designed and intended for intradermal injection,a novel HA/sorbitol composition containing 2.6% high molecular weight hyaluronic acid stabilized by sorbitol was recently developed to be specifically injected into the adipose tissue to improve the quality of all skin layers,especially the skin ***:The HA/sorbitol composition was investigated versus product comparators in terms of biophysical properties,tolerance in subcutaneous tissue with in vivo implantation study,and skin firmness assessment on human skin ***:The HA/sorbitol composition was characterized by unique and differentiated biophysical properties,proper distribution and high tolerance of the gel composition into the adipose tissue,and the ability to efficiently improve skin ***:The HA/sorbitol composition represents a new attractive solution to treat facial skin aging with an injection strategy specifically targeting the adipose tissue instead of the dermis,to improve the quality of the skin.

关键词： Facial aging hyaluronic acid sorbitol biophysical properties skin quality

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Study of biological markers in skin quality treatment by subcutaneous injection of a stabilized composition of 26 mg/mL of high molecular weight HA

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Plastic and Aesthetic Research 2022年第1期9卷 539-552页

作者： Jérémie bon bétemps samuel Gavard Molliard basste Hadjab Mhd badi Anas Ghazal Marco Cerrano Research and Development Department Kylane Laboratoires SAPlan-les-Ouates 1228Switzerland Art Clinic Riyadh 12432Saudi Arabia Derma Clinic Jeddah 23432Saudi Arabia Entourage Clinique Lausanne 1003Switzerland

Aim:Hyaluronic acid(HA)injectables have gained rapid acceptance for the treatment of skin rejuvenation.A novel HA/sorbitol composition intended for skin quality improvement containing 2.6%of high molecular weight HA stabilized by sorbitol was recently designed to be injected *** aim of this study was to assess the expression of biological markers of skin quality after administration of the ***:The HA/sorbitol composition was evaluated after injection into the superficial adipose tissue with ex vivo cultured human skin explants versus a product comparator to study the general morphology of the skin tissues and the expression of HA,elastin,collagen type Ⅰ,collagen type Ⅲ,and fibrillin-1 in the dermal ***:The results demonstrate that the HA/sorbitol composition is able to boost the production of HA,elastin,collagen type Ⅰ,collagen type Ⅲ,and fibrillin-1 in the dermis while providing a proper quality of skin ***:The HA/sorbitol composition improved biological markers of skin quality in the dermis after product injection into the superficial adipose *** novel composition can be considered as an attractive solution to treat skin aging by injecting a specific HA/sorbitol formulation to strategically target the subcutaneous tissue to improve the quality of the different layers of the skin.

关键词： Facial aging hyaluronic acid sorbitol skin quality biological markers

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