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Exploring the binding mechanism of thioflavin-T to the β-amyloid peptide by blind docking method

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中国科学：化学 2012年第2期42卷 226-228页

关键词：对接方法硫黄粉样疏水相互作用机制静电相互作用肽动力学方程

INHERITANCE OF PRECIPITATED V_4C_3 IN MARTENSITIC TRANSFORMATION

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Acta Metallurgica Sinica(English Letters) 1992年第2期5卷 82-88页

作者： XIE Changsheng SUN Peizhen zhao Jiansheng SUN desheng Huazhong University of Science and Technology,Wuhan,China Huazhong Univ of Science and Technology Wuhan China

The inheritance phenomenon of precipitated V_4C_3 in martensitic transformation has been in- vestigated by means of electron diffraction and matrix analysis.A crystallographic orientation relation among austenite,martensite and V_4C_3 carbide was found to be. (010)_A∥( 10)_M∥(010)_(v_4c_3), [10 ]∥[11 ]_M [10 ]_(v_4c_3) The V_4C_3 first precipitated in austenite,and then was inherited to *** cer- tain orientation relation was kept between V_4C_3 and martensite,the interfacial structural ana- lysis pointed out that the biphase interfacial energy is higher than that determined by Baker-Nutting relation,thus it is *** the V_4C_3 precipitated along the crystalline defects in austenite,they could be inherited to martensite.

关键词： V_4C_3 transformation inheritance orientation

High-energy and high-peak-power GHz burst-mode all-fiber laser with a uniform envelope and tunable intra-burst pulses

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High Power Laser Science and Engineering 2023年第6期11卷 146-153页

作者： Shuailin Liu Bin Zhang Yuanzhuang Bu desheng zhao Xiran Zhu Linyong Yang Jing Hou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangshaChina Nanhu Laser Laboratory National University of Defense TechnologyChangshaChina Hunan Provincial Key Laboratory of High Energy Laser Technology ChangshaChina

We report a Yb-doped all-fiber laser system generating burst-mode pulses with high energy and high peak power at a GHz intra-burst repetition *** acquire the uniform burst envelope,a double-pre-compensation structure with an arbitrary waveform laser diode driver and an acoustic optical modulator is utilized for the first *** synchronous pumping is utilized for the system to reduce the burst repetition rate to 100 Hz and suppress the amplified spontaneous emission *** adjusting the gain of every stage,uniform envelopes with different output energies can be easily *** intra-burst repetition rate can be tuned from 0.5 to 10 GHz actively modulated by an electro-optic *** by timing control of eight channels of analog signal and amplified by seven stages of Yb-doped fiber amplifier,the pulse energy achieves 13.3 mJ at 0.5 ns intra-burst pulse duration,and the maximum peak power reaches approximately3.6 MW at 48 ps intra-burst pulse *** the best of our knowledge,for reported burst-mode all-fiber lasers,this is a record for output energy and peak power with nanosecond-level burst duration,and the widest tuning range of the intra-burst repetition *** particular,this flexibly tunable burst-mode laser system can be directly applied to generate high-power frequency-tunable microwaves.

关键词： burst-mode laser fiber laser high peak power high pulse energy

Record power and efficient mid-infrared supercontinuum generation in germania fiber with high stability

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High Power Laser Science and Engineering 2022年第6期10卷 15-19页

作者： Linyong Yang Yukun Yang Bin Zhang Xiran Zhu desheng zhao Shuailin Liu Jing Hou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangshaChina State Key Laboratory of Pulsed Power Laser Technology ChangshaChina Nanhu Laser Laboratory National University of Defense TechnologyChangshaChina

We report the demonstration of a mid-infrared(MIR)supercontinuum(SC)laser delivering a record-breaking average output power of more than 40 W with a long-wavelength edge up to 3.5μ*** all-fiberized configuration was composed of a thulium-doped fiber amplifier system emitting a broadband spectrum covering 1.9–2.6μm with pulse repetition rate of 3 MHz,and a short piece of germania fiber.A 41.9 W MIR SC with a whole spectrum of 1.9–3.5μm was generated in a piece of 0.2-m-long germania fiber,with a power conversion efficiency of 71.4%.For an even shorter germania fiber(0.1 m),an SC with even higher output power of 44.9 W(corresponding to a conversion efficiency of 76.5%)was obtained,but the energy conversion toward the long-wavelength region was slightly limited.A continuous operation for 1 hour with output power of 32.6 W showed outstanding power stability(root mean square 0.17%)of the obtained SC *** the best of the authors’knowledge,for the first time,this work demonstrates the feasibility of germania fiber on generating a 40-W level MIR SC with high efficiency and excellent power stability,paving the way to real applications requiring high power and high reliability of MIR SC lasers.

关键词： fiber laser high power nonlinear optics supercontinuum generation

Observation and optimization of 2 μm mode‐locked pulses in all‐fiber net anomalous dispersion laser cavity

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Opto-Electronic Advances 2020年第11期3卷 10-17页

作者： Wanzhuo Ma desheng zhao Runmin Liu Tianshu Wang Quan Yuan Hao Xiong Haiying Ji Huilin Jiang National and Local Joint Engineering Research Center of Space Optoelectronics Technology Changchun University of Science and TechnologyChangchun 130022China College of Opto-Electronic Engineering Changchun University of Science and TechnologyChangchun 130022China

We integrally demonstrate 2μm mode-locked pulses performances in all-fiber net anomalous dispersion *** mode-locking operations with the center wavelength around 1950–1980 nm can be achieved by using the nonlinear polarization rotation structure and properly designing the dispersion management *** soliton is firstly obtained with a total anomalous dispersion *** to the contribution of commercial ultra-high numerical aperture fibers,net dispersion is reduced to-0.077 *** that stretched pulse with 19.4 nm optical bandwidth is obtained and the de-chirped pulse-width can reach 312 fs using extra-cavity *** pump power greater than 890 mW,stretched pulse can evolve into noise-like pulse with 41.3 nm *** envelope and peak of such broadband pulse can be compressed with up to 2.2 ps and 145 fs,*** single pulse energy of largely chirped stretched and noise-like pulse can reach 1.785 nJ and 1.53 nJ,***,extra-cavity compression can also contribute to a significant increase of peak power.

关键词： fiber lasers mode-locked lasers 2μm fiber lasers

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一战华工与五四运动

中国青年研究 2010年第8期 53-56页

作者：赵德生吉林省团校党委

一战华工对五四运动重要作用鲜为人知。五四爆发直接原因即战胜国交涉失败,中国作为战胜国的主要依据就是14万多青年华工赴欧洲参战的特殊贡献。五四前夕青年华工的各种爱国举动和捐款行动,表现出高涨的爱国觉悟和热情。青年华工对出席... 详细信息

一战华工对五四运动重要作用鲜为人知。五四爆发直接原因即战胜国交涉失败,中国作为战胜国的主要依据就是14万多青年华工赴欧洲参战的特殊贡献。五四前夕青年华工的各种爱国举动和捐款行动,表现出高涨的爱国觉悟和热情。青年华工对出席巴黎和会的中国代表团直接施加压力,迫使其不敢在和约上签字,成为五四运动重大胜利标志。中国新民主主义革命开端重要标志即工人阶级第一次独立登上政治舞台,一战华工成为首推力量。五四流行口号"劳工神圣"就源于中国精英知识分子对一战华工的积极看法,使青年先驱者认识到工农民众的伟大力量,进而开辟了与工农相结合的革命新路。

关键词：青年华工五四原因作用首推力量

2.1 μm,high-energy dissipative soliton resonance from a holmium-doped fiber laser system

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High Power Laser Science and Engineering 2023年第1期11卷 90-98页

作者： desheng zhao Bin Zhang Xiran Zhu Shuailin Liu Li Jiang Zhiyuan Dou Linyong Yang Jing Hou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangshaChina Nanhu Laser Laboratory National University of Defense TechnologyChangshaChina Hunan Provincial Key Laboratory of High Energy Laser Technology ChangshaChina

We propose a 2.1μm high-energy dissipative soliton resonant(DSR)fiber laser system based on a mode-locked seed laser and dual-stage *** the seed laser,the nonlinear amplifying loop mirror technique is employed to realize *** utilization of an in-band pump scheme and long gain fiber enables effectively exciting 2.1μm pulses.A section of ultra-high numerical aperture fiber(UHNAF)with normal dispersion and high nonlinearity and an output coupler with a large coupling ratio are used to achieve a high-energy DSR *** optimizing the UHNAF length to55 m,a 2103.7 nm,88.1 nJ DSR laser with a 3-dB spectral bandwidth of 0.48 nm and a pulse width of 17.1 ns is obtained under a proper intracavity polarization state and pump *** output power and conversion efficiency are 0.233W and 4.57%,respectively,both an order of magnitude higher than those of previously reported holmium-doped DSR seed *** to the high output power and nanosecond pulse width of the seed laser,the average power of the DSR laser is linearly scaled up to 50.4 W via a dual-stage master oscillator power amplifier *** 3-dB spectral bandwidth broadens slightly to 0.52 nm,and no distortion occurs in the amplified pulse *** corresponding pulse energy reaches 19.1μJ,which is the highest pulse energy in a holmium-doped mode-locked fiber laser system to the best of our *** a 2.1μm,high-energy DSR laser with relatively wide pulse width has prospective applications in mid-infrared nonlinear frequency conversion.

关键词： dissipative soliton resonance high pulse energy holmium-doped fiber laser system mode-locking

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地方生态合作治理的逻辑切换和现实建构

青海社会科学 2020年第3期 23-29页

作者：赵德胜南京工业大学公共管理系河海大学

当下中国,绿色发展理念的践行必然要体现在现实中的地方生态治理层面,这是实现中国经济结构升级和发展方式转变的不二选择。而就地方生态治理而言,超越传统意义和简单层次上的府际协作,走向多元主体治理结构下的地方生态合作治理乃是时... 详细信息

当下中国,绿色发展理念的践行必然要体现在现实中的地方生态治理层面,这是实现中国经济结构升级和发展方式转变的不二选择。而就地方生态治理而言,超越传统意义和简单层次上的府际协作,走向多元主体治理结构下的地方生态合作治理乃是时代发展的必然趋势。因此,中国地方生态治理的创新和生态文明体制的变革需要完成从经济理性到公共理性的内在逻辑置换,着力实现更加高效、更具活力的生态合作治理机制的构建。

关键词：生态合作治理公共理性社会变革

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不同壁材对益生菌微胶囊性能的影响

中国乳品工业 2017年第2期45卷 29-32,42页

作者：赵德胜包头轻工职业技术学院内蒙古包头014035

探讨了不同类型的包埋壁材对益生菌在生产加工、贮藏和人体内的耐受性以及对产品感官性能等方面的影响,并对益生菌微胶囊壁材将来的应用和发展趋势进行了展望。

关键词：益生菌微胶囊壁材耐受性