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Neuro-rejuvenation for neuronal function

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Neural Regeneration Research 2016年第10期11卷 1560-1563页

作者： Yuan Liu Richard k.Lee Bascom Palmer Eye Institute University of Miami School of Medicine

Neurodegenerative eye diseases, such as glaucoma, cause irreversible vision loss in millions of patients worldwide, creating serious medical, economic and social issues. Like other mammalian central nervous system tracts, optic nerve intrinsically lacks the capacity for axonal growth and its surrounding environment is also non-permissive to regeneration. Any axonal damage also triggers a vicious cycle of retinal ganglion cell （RGc） death. Exploring methods that can enhance RGcs survival and promote axonal regeneration will not only enable vision restoration for millions of patients, but also shed light on the treatment of other neurodegenerative diseases. In this review article, we will go through three current approaches to cure neu- rodegenerative eye diseases, including cell based therapy, neuro-regeneration and neuro-rejuvenation.

关键词： neurogenerative eye disease stem cell therapy neuro-regeneration neuro-rejuvenation recoveryof vision function

A highly-sensitive automatic transient laser-induced breakdown spectroscopy system with high temporal and spatial resolution

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chinese Physics B 2012年第8期21卷 469-475页

作者：刘巧君冯瑞权郑玉臣罗时荣谭建成朱建华冼保生 Department of Physics Sichuan University Faculty of Information Technology Macao University of Science and TechnologyMacao Special Administrative Region(SAR)China Meteorological and Geophysical Bureau Macao Special Administrative Region(SAR)China Department of Physics Sichuan UniversityChengdu 610064China

A highly-sensitive automatic transient laser-induced breakdown spectroscopy （LIBS） system is designed and integrated. It successfully avoids the delay time selecting problem in the conventional LIBS system, and realizes the LIBS data acquisition with high spatiotemporal resolution automatically. Multiple transient spectra can be obtained in each measurement, which will provide more information for spectral research. The water-vapour and liquid-water Raman scattering spectra are captured by this system, and the comparison of experimental water-vapour Raman scattering spectrum with theoretical data verifies the reliability of the LIBS system. Based on this system, the air laser induced air breakdown spectra are captured and analysed. The system is also useful for the research on water-vapour Raman Lidar remote sensing.

关键词： laser-induced breakdown spectroscopy water Raman spectrum water-vapour RamanLidar

charmonium Spectrum and Their Transitions in Relativistic Quark Models

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communications in Theoretical Physics 2011年第6期55卷 1044-1048页

作者： Bhaghyesh k.B. Vijaya kumar Department of Physics Mangalore UniversityMangalagangotriMangalore 574 199India

Using the phenomenological relativistic harmonic model （RHM） for quarks, we have obtained the masses of S wave charmonium states. The full Hamiltonian used in the investigation has Lorentz scalar plus vector confinement potential, along with the confined one gluon exchange potential （cOGEP）. A good agreement with the experimental masses for the ground state and the radially excited states is obtained for both the triplet and singlet S wave mesons. The calculated charge radii, meson decay constants, leptonic decay width, two photon decay width, and the radiative M1 decay width are in good agreement with the experimental results.

关键词： quark model confined-one-gluon-exchange potential S-wave charmonium states charge radii decay constants Leptonic two photon and radiative decays

Another piece of the meiosis puzzle

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Asian Journal of Andrology 2017年第1期19卷 3-4页

作者： Paul S cooke Manjunatha k Nanjappa Department of Physiological Sciences College ofVeterinary Medicine University of Florida GainesvilleFL 32608 USA.

Meiosis, the process by which the ovary and testis produce haploid gametes from initially diploid cells, is essential for sexual reproduction in mammals. This process, initially described in the late 19th and early 20th century using model organisms such as sea urchins, worms and fruit flies, continues to attract extensive interest from reproductive biologists due to its centrality in gametogenesis.

关键词： testis produce haploid

How to make a human germ cell

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Asian Journal of Andrology 2015年第3期17卷 441-442页

作者： Paul S cooke Manjunatha k Nanjappa Department of Physiological Sciences College ofVeterinary Medicine University of Florida GainesvilleFL 32608 USA

How the primordial germ cell （PGc） lineage, which eventually gives rise to spermatozoa in males and oocytes in females, is established in the developing mammalian embryo has been a critical topic in both developmental and reproductive biology for many years. There have been significant breakthroughs over the past two decades in establishing both the source of PGcs and the factors that regulate the specification of this lineage in mice,~ but our understanding of the factors that control PGc development in the human is rudimentary. The SRY-related HMG-box （SOX） family of transcription factors consists of 20 genes in humans and mice that are involved in the maintenance of pluripotency, male sexual development, and other processes. A recent paper in cell has identified one member of this family, SOX17, as an essential factor for inducing the PGc lineage in ***, this protein does not appear to have a role in PGc specification in mice. This work not only introduces a new and important player to the field of germ cell specification, but also emphasizes the uniqueness of human PGc development compared to more extensively studied mouse models.

关键词： PLURIPOTENT STEM-cELLS MOUSE DIFFERENTIATION SPEcIFIcATION MIcE FATE

Two New Sesquiterpenes from Ligularia Dentata

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chinese chemical Letters 1996年第10期7卷 911-912页

作者： Gao, k Yang, L Jia, ZJ LANZHOU UNIV INST ORGAN CHEMSTATE KEY LAB APPL ORGAN CHEMLANZHOU 730000PEOPLES R CHINA

Two new germacrane sesquiterpenes(1) and (2) were isolated from Ligularia dentata. Their structures were elucidated by spectroscopic methods and 2D-NMR techniques.

关键词： Two New Sesquiterpenes from Ligularia Dentata

Bonding quality of Yb:Y_3Al_5O_(12)/Y_3Al_5O_(12) composite crystals

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Science china(Technological Sciences) 2008年第9期51卷 1457-1463页

作者： Bourdet GILBET J c cHANTELOUP Ecole Polytechnique Laboratoire pour l'Utilisation des Lasers IntensesRoute de Saclay Palaiseau 91128 France

The Yb:Y3Al5O12/Y3Al5O12 (Yb:YAG/YAG) composite crystals were prepared by thermal bonding method with different technological parameters. The bonding in-terface of the composite crystals were observed by optical microscope, scanning electron microscope, and atom force microscope. The light scattering experiments for bonding interface of the composite crystals were measured by the laser and transmission spectra. All experiments show that high-quality Yb:YAG/YAG com-posite crystals without space transition layer and light scattering on the bonding interface can be obtained by thermal bonding method under appropriate technological parameters.

关键词： Yb:YAG/YAG bonding quality light scattering transmission spectra

Joint Tracking with the Electron Beam in combination with a Work Piece Fixture

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稀有金属材料与工程 2011年第S4期40卷 99-101页

作者： M.Muecke k.Leeb Steigerwald Strahltechnik MaisachGermany

The electron beam is an excellent welding *** years this powerful beam guarantees high performance welds in automotive,aviation and other *** to its excellent parallel seam quality this welding tool is often used for well-prepared gapless *** fixtures have to guarantee the well-defined positioning of the work ***,tolerances in the work piece or the loading mechanism can cause *** quality welds frequently do not allow those *** operators have to take care that the beam is proper positioned before *** joint tracking systems it is possible to automate those manual *** production gets more independent on adjustments by the *** cameras or electrodes for backscattered electrons for joint tracking systems need directly access to the *** many applications the fixture is in between the work piece and the measuring *** joint cannot be automatically *** the positioning of the electrodes for backscattered electrons gives a major impact to the quality of the *** becomes mandatory to integrate the joint detection into the *** usage of backscattered electrons for seam tracking requests the integration of electrodes into the *** fast beam deflection for electron beams opens a wide range of *** optical viewing improves the visualization of the work *** pool applications or surface modifications can increase the production capacity or achieve better product *** tracking can be performed offline or *** free programmable environment allows combining tasks to match the production *** will be used to illustrate individual applications.

关键词： electron beam welding seam tracking multi pool welding

Plausible cloth animation using dynamic bending model

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Progress in Natural Science:Materials International 2008年第7期18卷 879-885页

作者： charlie c.L. Wang Department of Mechanical and Automation Engineering The chinese University of Hong kong Hong kong china

Simulating the mechanical behavior of a cloth is a very challenging and important problem in computer animation. The models of bending in most existing cloth simulation approaches are taking the assumption that the cloth is little deformed from a plate shape. Therefore, based on the thin-plate theory, these bending models do not consider the condition that the current shape of the cloth under large deformations cannot be regarded as the approximation to that before deformation, which leads to an unreal static bending. [This paper introduces a dynamic bending model which is appropriate to describe large out-plane deformations such as cloth buckling and bending, and develops a compact implementation of the new model on spring-mass systems. Experimental results show that wrinkles and folds generated using this technique in cloth simulation, can appear and vanish in a more natural way than other approaches.]

关键词： cloth animation Physically based animation Bending