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Z charmoniumlike mesons

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Chinese Physics C 2011年第7期35卷 695-702页

作者： Arafat Gabareen Mokhtar stephen lars olsen SLAC National Accelerator Laboratory Stanford Seoul National University KOREA

A brief review of the experimental situation concerning the electrically charged charmoniumlike meson candidates, Z-, is presented.

关键词： quarkonium exotics multiquark state

New physics searches at the BESⅢ experiment

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National Science Review 2021年第11期8卷 62-78页

作者： Shenjian Chen stephen lars olsen School of Physics Nanjing University Nanjing Proton Source Research and Design Center University of Chinese Academy of Sciences Institute for Basic Science

The standard model(SM) of particle physics, comprised of the unified electroweak and quantum chromodynamic theories, accurately explains almost all experimental results related to the micro-world, and has made a number of predictions for previously unseen particles, most notably the Higgs scalar boson, that were subsequently discovered. As a result, the SM is currently universally accepted as the theory of the fundamental particles and their interactions. However, in spite of its numerous successes, the SM has a number of apparent shortcomings, including: many free parameters that must be supplied by experimental measurements; no mechanism to produce the dominance of matter over antimatter in the universe; and no explanations for gravity, the dark matter in the universe, neutrino masses, the number of particle generations, etc. Because of these shortcomings, there is considerable incentive to search for evidence for new, non-SM physics phenomena that might provide important clues about what a new, beyond the SM theory(BSM) might look like. Although the center-of-mass energies that BESⅢ can access are far below the energy frontier, searches for new, BSM physics are an important component of its research *** report reviews some of the highlights from BESⅢ’s searches for signs of new, BSM physics by:measuring rates for processes that the SM predicts to be forbidden or very rare; searching for non-SM particles such as dark photons; performing precision tests of SM predictions; and looking for violations of the discrete symmetries C and CP in processes for which the SM expectations are immeasurably small.

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含有四个夸克或更多夸克的奇特粒子

物理 2014年第9期43卷 625-625页

作者：赵强 stephen lars olsen 中国科学院高能物理研究所不详

在粒子物理的所谓“标准模型”中发生强相互作用的基本粒子是带有分数电荷的夸克，这些夸克被电中性的类似光子的“胶子”捆绑在一起形成强子（包括重子和介子）。目前标准模型中包含6种不同“味道”的夸克：上夸克（u）、下夸克（d）... 详细信息

在粒子物理的所谓“标准模型”中发生强相互作用的基本粒子是带有分数电荷的夸克，这些夸克被电中性的类似光子的“胶子”捆绑在一起形成强子（包括重子和介子）。目前标准模型中包含6种不同“味道”的夸克：上夸克（u）、下夸克（d）、奇异夸克（s）、粲夸克（c）、底夸克（b）和顶夸克（t）；它们各自的反粒子（反夸克）被标志为u、d、s、c、b、t。每一种味道的夸克又带有强作用的3种不同的“色荷”之一的“色荷”。之所以称之为“色荷”是因为强相互作用将这些带色荷的夸克束缚在一起形成强子的法则很容易让我们类比到对颜色的感知。我们姑且把这3种色荷称为红色、绿色和蓝色；它们相应的反夸克的颜色就对应到互补色：蓝绿色、紫红色和黄色。

关键词：上夸克基本粒子强相互作用标准模型分数电荷粒子物理奇异夸克反夸克

Targeted Genome Editing by Recombinant Adeno-Associated Virus(rAAV) Vectors for Generating Genetically Modified Pigs

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Journal of Genetics and Genomics 2012年第6期39卷 269-274页

作者： Yonglun Luo Emil Kofod-olsen Rikke Christensen Charlotte Brandt Sorensen lars Bolund Department of Biomedicine Aarhus University Wilhelm Meyers AUe 4 DK-8000 Aarhus C Denmark BGI/HuaDa Jigin-Shenzhen Shenzhen 510813 China

Recombinant adeno-associated virus （rAAV） vectors have been extensively used for experimental gene therapy of inherited human diseases. Several advantages, such as simple vector construction, high targeting frequency by homologous recombination, and applica- bility to many cell types, make rAAV an attractive approach for targeted genome editing. Combined with cloning by somatic cell nuclear transfer （SCNT）, this technology has recently been successfully adapted to generate gene-targeted pigs as models for cystic fibrosis, hereditary tyrosinemia type 1, and breast cancer. This review summarizes the development of rAAV for targeted genome editing in mammalian cells and provides strategies for enhancing the rAAV-mediated targeting frequency by homologous recombination. We discuss current development and application of the rAAV vectors for targeted genome editing in porcine primary fibroblasts, which are subse- quently used as donor cells for SCNT to generate cloned genetically designed pigs and provide positive perspectives for the generation of gene-targeted pigs with rAAV in the future.

关键词： rAAV Gene targeting Homologous recombination SCNT Genetically modified pigs

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测定沉积碎屑总磨圆度的一种新方法

地球与环境 1984年第5期 33-36页

作者： lars olsen 项光河北地质学院

岩石碎屑和矿物颗粒野外圆度目测法已长期应用于第四纪地质调查中。作为一种野外方法,圆度分析应用于碎屑组分,尤其是砾石和粗砾部分是简单的。事实证明,当圆度分析作为一种工具用米解决沉积物简单的成因问题时,四级圆度的划分已是相当... 详细信息

岩石碎屑和矿物颗粒野外圆度目测法已长期应用于第四纪地质调查中。作为一种野外方法,圆度分析应用于碎屑组分,尤其是砾石和粗砾部分是简单的。事实证明,当圆度分析作为一种工具用米解决沉积物简单的成因问题时,四级圆度的划分已是相当满意了。但把圆度分析应用于较复杂的成因问题时,只靠增加圆度级数通常是很不够的。一般来讲,关键在于

关键词：圆度值破损率碎裂作用碎屑颗粒磨圆河流沉积物

3D CFD MODELING OF WATER AND SEDIMENT FLOW IN A HYDROPOWER RESERVOIR

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International Journal of Sediment Research 1999年第1期 20-28页

作者： Nils Reidar B.olsen 1, Oscar F.JIMENEZ 2, lars ABRAHAMSEN 3, and Aslak L*IVOLL 4

１ＩＮＴＲＯＤＵＣＴＩＯＮＲｅｓｅｒｖｏｉｒｓｅｄｉｍｅｎｔａｔｉｏｎｉｓｒｅｃｏｇｎｉｚｅｄａｓｏｎｅｏｆｔｈｅｍａｉｎｐｒｏｂｌｅｍｓａｆｅｃｔｉｎｇｔｈｅｅｃｏｎｏｍｉｃｓｏｆｍａｎｙｗａｔｅｒｒｅｓｏｕｒｃｅ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＲｅｓｅｒｖｏｉｒｓｅｄｉｍｅｎｔａｔｉｏｎｉｓｒｅｃｏｇｎｉｚｅｄａｓｏｎｅｏｆｔｈｅｍａｉｎｐｒｏｂｌｅｍｓａｆｅｃｔｉｎｇｔｈｅｅｃｏｎｏｍｉｃｓｏｆｍａｎｙｗａｔｅｒｒｅｓｏｕｒｃｅｓｐｒｏｊｅｃｔｓ．Ｍａｎｍａｄ...

关键词： Computational fluid dynamics Sediment transport Hydropower Reservoirs Model verification

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Darboux定理的一个新证明

数学译林 2005年第3期24卷 286-287页

作者： lars olsen 姜玲玉(译) 陆柱家(校)

在本短文中，我们将给出Darboux定理的一个（新的？）证明．Darboux定理说，任何导数都有介值性质．回顾一下，定义在区间I上的一个实值函数，f，I→R被说成具有介值性质是指，如果对区间I内所有满足a≤b的a和b，及介于，（n）与，（6... 详细信息

在本短文中，我们将给出Darboux定理的一个（新的？）证明．Darboux定理说，任何导数都有介值性质．回顾一下，定义在区间I上的一个实值函数，f，I→R被说成具有介值性质是指，如果对区间I内所有满足a≤b的a和b，及介于，（n）与，（6）之间的任意一个数y，都存在一个数z∈[a，b]，使得f（x）=y．

关键词： Darboux定理介值性质实值函数可微函数

Shot-noise limited, supercontinuum-based optical coherence tomography

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Light(Science & Applications) 2021年第7期10卷 1372-1384页

作者： Shreesha Rao D.S. Mikkel Jensen lars Grüner-Nielsen Jesper Toft olsen Peter Heiduschka Björn Kemper Jürgen Schnekenburger Martin Glud Mette Mogensen Niels Møller Israelsen Ole Bang DTU Fotonik Dept.of Photonics EngineeringTechnical University of DenmarkØrsteds Plads2800 Kongens LyngbyDenmark NKT Photonics A/S Blokken 843460 BirkerødDenmark Department of Ophthalmology University of Münster Medical CentreDomagkstr.15D-48149 MünsterGermany Biomedical Technology Center of the Medical Faculty University of MünsterMendelstr.17D-48149 MünsterGermany Department of Dermatology Bisbebjerg HospitalUniversity of CopenhagenBispebjerg Bakke 232400 Copenhagen NVDenmark

We present the first demonstration of shot-noise limited supercontinuum-based spectral domain optical coherence tomography(SD-OCT)with an axial resolution of 5.9μm at a center wavelength of 1370 *** supercontinuumbased SD-OCT systems cannot be operated in the shot-noise limited detection regime because of severe pulse-topulse relative intensity noise of the supercontinuum *** overcome this disadvantage,we have developed a low-noise supercontinuum source based on an all-normal dispersion(ANDi)fiber,pumped by a femtosecond *** noise performance of our 90 MHz ANDi fiber-based supercontinuum source is compared to that of two commercial sources operating at 80 and 320 MHz repetition *** show that the low-noise of the ANDi fiber-based supercontinuum source improves the OCT images significantly in terms of both higher contrast,better sensitivity,and improved *** SD-OCT imaging of skin,retina,and multilayer stacks we conclude that supercontinuumbased SD-OCT can enter the domain of shot-noise limited detection.

关键词： fiber optical pumped

Acoustic Myography in Assessment of Isokinetic and Isometric Muscle Strength in a Healthy Danish Population

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Journal of Biomedical Science and Engineering 2020年第12期13卷 235-253页

作者： Else Marie Bartels Waqas Ahmed Jack Kvistgaard olsen Eva Littrup Andersen Bente Danneskiold-Samsøe lars-Erik Kristensen Henning Bliddal Cecilie Rødgaard Bartholdy Adrian P. Harrison The Parker Institute Copenhagen University Hospital Bispebjerg and Frederiksberg Denmark Department of Neurology Copenhagen University Hospital Bispebjerg and Frederiksberg Denmark Department of Veterinary and Animal Sciences Faculty of Health Science University of Copenhagen Copenhagen Denmark

Isokinetic and isometric force measurements involving a dynamometer setup are widely used in training and in muscle assessment. For further understanding of the method, we investigated the activation of key functional muscles during isokinetic and isometric movements. During force measurements in an isokinetic Biodex System 3 ProTM, acoustic myography (AMG) was applied. Ten healthy subjects (5 men/5 women) in each decade from 20 to 69 years of age participated in the study. Measurements were carried out during extension and flexion of the ankle, knee and elbow joints. Muscle fibre use was measured by efficiency (E-score) and fibre recruitment (temporal (T-score) and spatial (S-score) summation). AMG measurements showed good reproducibility, and the recruitment pattern of muscle fibres did not change with gender or age. Overall, a significantly higher E-score (P < 0.05) was found at the lower angular velocities than at the higher ones, indicating a lower level of muscle efficiency at higher velocities. Muscles used for knee movement exhibited higher scores than muscles associated with the ankle and elbow joints, most likely related to the greater degree of force production at this joint compared to the ankle and elbow. The ability to activate and inactivate muscle fibres during periods of isokinetic activity becomes increasingly more difficult as the velocity increases. When assessing training effects in sports or rehabilitation, AMG in parallel with isokinetic measurements adds important additional information by giving a measure of possible improvements in efficiency and fibre use.

关键词： Muscle Strength Acoustic Myography Range of Motion Muscle Fibre Use