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Phylogenetic relationships of host insects of Cordyceps sinensis inferred from mitochondrial Cytochrome b sequences

Progress in Natural Science:Materials International 2007年第7期17卷 789-797页

作者： cheng Zhou~(1.2.*) Geng Yang~1.Liang Honghui~1.Yang Xiaoling~1.Li Shan~1.{1. Yunguo~1.Guo Guangpu~1.Zhou Tongshui~2.chen Jiakuan~2.(1.School of Life Science and Technology,Tongji University,{2. 2.0092.{12. 2.Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,Institute of Biodiversity Science,Fudan University,{2. 2.0433,{12.) School of Life Science and Technology Tongji University Shanghai 200092 China Ministry of Education Key Lab. for Biodiversity Science and Ecological Engineering Institute of Biodiversity Science Fudan University Shanghai 200433 China

This study used the sequence of the mitochondrial Cytochrome b(Cytb)to estimate phylogenetic relationships among host Hepialidae insects of Cordyceps *** DNA of host insect was extracted from the dead larva head part of 1. cordyceps populations and 2.species of Hepialus,and the Cytb fragment of host insect was amplified with PCR *** nucleotide sequence alignments and their homologous sequences of 2. species host Hepialidae insects of Cordyceps sinensis were obtained from GenBank and were used to construct phylogenetic trees based on neighbor-joining *** results showed that genus Bipectilus diverged earlier than genus Hepialus and *** host insects of Cordyceps sinensis have multitudinous species with different morphological characteristics and geographical *** interspecific genetic differentiations are obvious in ***,the genus Hepialus might be considered as polyphyletic *** sequences have abundant variations among the host insects of Cordyceps sinensis on spe- cific and generic *** divergence rate of Cytb sequences among the species in Hepialus ranged from 0.2.% to 9.2.%,except that Hepialus pratensis and Hepialus jinshaensis have the same *** sequence can be used for species identification of host insects of Cordyceps sinensis,but further confirmation in more host insect species is *** obtain the Cytb sequence of host insect by ampli- fying DNA extracted from the head part of dead larva in cordyceps turns out to be an effective and accurate approach,which will be useful for studies on phylogeny and genetic structure of host insects of cordyceps populations,especially for analyzing relationships between C. sinensis and its host insects.

关键词： mitochondrial Cytochrome b Cordyceps sinensis Hepialus phylogeny

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Shared latent dynamical structure for three-dimensional human pose estimation

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Science china(Information Sciences) 2011年第7期54卷 1375-1382页

作者： TONG MingLei 1.HAN Hong 2.& zhu Wu 1.1.School of Computer and Information,{1. University of Electric Power,{1. 2.1.00,{2. 2.Institute of Intelligent Information Processing,Xidian University,Xi’an 71.071.{2. 1. School of Computer and Information Shanghai University of Electric Power Shanghai 201300 China2. Institute of Intelligent Information Processing Xidian University Xi’an 710071 China

In this paper,a shared latent dynamical model (SLDM) and its application in tracking 3D human motion from monocular videos are proposed by combining the ideas of Gaussian processes dynamical model with shared latent *** tracking in high-dimensional space,SLDM can map state space and observation space to a shared latent space of low dimensionality with associated *** off-line training,three mappings,including dynamical mapping in latent space and mappings from the latent space to both state space and observation space,are *** model can separate traditional human motion estimation in highdimensional space into two steps: In the first step,the shared latent dynamical variables are estimated;in the second step,the human pose of high dimension is *** in human motion tracking from monocular videos using simulations and real images demonstrate that this human tracking method is efficient.

关键词： visual media shared latent dynamical model 3D human pose estimation

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Research on Vibration Cutting Performance of Particle Reinforced Metallic Matrix Composites SiC_p/Al

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厦门大学学报（自然科学版） 2002年第S1期41卷 70-71页

作者： ZHAO Bo 1.2. LIU Chuan-shao 2. zhu Xun-sheng 1. XU Ke-wei 1.(1. Institute of Mechanical Engineering, {1. Jiaotong U niversity, {1. 2.0030,{2. 2. Department of Mechanical Engineering, Jiaozuo Institute of Technology, Hena n 454000,{2.)

The cutting performance of particle reinforced meta ll ic matrix composites (PRMMCs) SiC p/Al in ultrasonic vibration cutting and comm on cutting with carbide tools and PCD tools was experimentally researched in the paper. The changing rules of chip shape, deformation coefficient, shear angle a nd surface residual stress were presented by ultrasonic vibration cutting. Resul ts show: when adopting common cutting, spiral chip with smaller curl radius will be obtained. The chip with zigzag contour is short and thick. There are lots of sheet cracking both on the face of the chip and on the machined surface. That i s to say, the cutting process of metallic matrix composites(MMCs) is not all lik e the cutting process of plastic material. It is akin to the breaking process of brittle material. By comparison, when adopting ultrasonic cutting, because tool contacts with workpiece intermittently in high frequency, deformation of chip i s small, loose spiral chip with larger curl radius is long and thin. The phenome non is just similar to vibration cutting of plastic material. But the chip still belongs to plastic or semi-plastic segmental chip due to the structure charact eristics of the material itself. Furthermore, the tangential residual compressio n stress of vibration cutting is larger than that of common cutting, axial resid ual stress has a relation to the feed rate and residual stress does not changes obviously with cutting depth and they are in the same order of magnitude on the whole. According to the test result analyzing, the following conclusions are put forward: 1. The extruding deformation is serious in common cutting PRMMCs, defo rmation of it’s chip is larger, and the chip with lesser curl radius is short. Whereas, the deformation of chip in vibration cutting PRMMCs is lesser, the curl radius is bigger, and the loose chips are obtained at every turn. 2. The cuttin g deformation coefficient of chip in vibration cutting is lesser than that in co mmon cutting, h

关键词： PRMMCs ultrasonic vibration cutting chip deform ation chip shape

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Effect of Pre-treatment on the Bi-2.2./Ag Tapes Fabricated with Different Powders

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稀有金属材料与工程 2011年第S3期40卷 325-328页

作者： Li Mingya1. chen Xingpin2. Ye chengli1. Yu Liang1. zhu Xu1.1.Northeastern University at Qinhuangdao, Qinhuangdao 066004,{2. 2.Chongqing University, Chongqing 400044,{2. NE Univ Qinhuangdao Dept Mat Sci & Engn Qinhuangdao 066004 Peoples R China Chongqing Univ Chongqing 400044 Peoples R China

Samples of Bi-2.2./Ag tapes fabricated with powders contained different lead oxide compounds were annealed at a temperature lower than the formation temperature of Bi-2.2. phase before traditional heat treatment, which was called pretreatment. In pre-treatment stage, samples were heat treated at 780 ℃ in 8.5% O2. and the dwelling time is different. Experimental results show that pre-treatment had different influence on the formation and size of the Bi-2.2. grains for tapes fabricated with powders contained different lead oxide compounds. For tapes contained both Ca2.bO4 and the 332.0}phase, the decomposition of the 332.0}phase enhanced the growth of Bi-2.1. grains during pre-treatment process, which promoted the formation of Bi-2.2. phase and enhanced the superconducting properties of Bi-2.2./Ag tapes.

关键词： pre-treatment Bi-2.2./Ag tapes lead oxide compounds critical current

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Research on the Surface Micro-configuration in Vibration Cutting Particle Reinforced Metallic Matrix Composites SiC_p/Al

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厦门大学学报（自然科学版） 2002年第S1期41卷 71-72页

The cutting performance of particulate reinforced me tallic matrix composites(PRMMCs) SiC p/Al in ultrasonic vibration cutting and c ommon cutting with carbide tools and PCD tools was researched in the paper. Mic rostructure of machined surface was described, the relation between cutting para meters and surface roughness was presented, and characteristic of the surface re mained stress was also presented. Furthermore, wear regularity and abrasion resi stance ability of tools in ultrasonic vibration cutting and common cutting o f PRMMCs were discussed in detail. The test results show: (1. The surface config urations are obviously different when using different tools to machine such PRMM Cs. The surface machined with carbide tools looks luminous and orderly and there are seldom surface defects on it. The reason is that the soft basal body is apt to flow during cutting, therefore a layer of Al matrix film covers machined sur face. On the contrary, the surface machined with PCD tools looks lackluster. But the profile of machined surface is very clear. Superfine grooves, pits and blac k reinforce particulates can be seen easily without obvious Al film. (2. Because of unstable cutting process in common cutting, the surface is easy to produce s ome defects such as burrs, built-up edges and so on so that the quality of surf ace becomes very poor. Vibration cutting can reduce the influence of tearing, pl astic deformation and built-up edge in cutting and can restrain flutter so as t o make cutting process more stable. Therefore, surface roughness of vibration cu tting is better than that of common cutting. (3) There is an optimum value of fe ed rate in vibration cutting of PRMMCs due to the influence of material characte ristics. Whether feed rate is more than or less than this optimum value, surface roughness will increase. (4) According to analyzing the wear rate of tools in v ibration cutting PRMMCs, it can be concluded that abrasion resistance of tools w ill be improved

关键词： PCD tools composite SiC p/Al surface micro-c onfiguration tool wear

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A current-mode RF transmitter for 6–9 GHz MB-OFDM UWB application

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Science china(Information Sciences) 2011年第2期54卷 419-428页

作者： chen YunFeng1. FAN JinHan1. LI Wei1. LI Ning1.& REN JunYan1.2.1.tate Key Laboratory of ASIC & System, Fudan University, {1. 2.1.03,{2. 2.icro-/Nano-Electronics Science and Technology Innovation Platform, Fudan University, {1. 2.1.03,{2. 1. State Key Laboratory of ASIC & System Fudan University Shanghai 201203 China2. Micro-/Nano-Electronics Science and Technology Innovation Platform Fudan University Shanghai 201203 China

This paper presents a current-mode 6–9 GHz RF transmitter for MB-OFDM UWB systems. The proposed current-mode transmitter consists of current-mode IQ LPF, current mirror amplifier, IQ up-conversion mixer (up-mixer), differential power driver amplifier (PA) and high-speed divider with LO buffers for generating IQ LO signals. All circuits are designed to possess high linearity and wide bandwidth. The transmitter is fabricated in TSMC 0.1. μm 1.8M RF CMOS technology with a die area of 1.56 mm2. Measurement results show that a maximum output power of -0.7 dBm with an LO leakage/sideband rejection ratio (LOL/SB RR) around -33/ - 35 dBc is achieved, and that this transmitter excels the traditional voltage-mode counterpart in terms of high linearity (about +1.dBm output 1.dB compression point, +1. dBm output IP3 in average) with comparable power consumption (drawing 48 mA current from 1.2.V supply).

关键词： current-mode RF transmitter high linearity MB-OFDM UWB high speed divider CMOS

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A simple lattice Boltzmann scheme for low Mach number reactive flows

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Science china(Technological Sciences) 2006年第6期49卷 714-726页

作者： chen Sheng1.2. LIU Zhaohui2. ZHANG Chao2. HE {1.2. TIAN Zhiwei2. SHI Baochang 2.& {1. Chuguang2.1. Technology Center of Wuhan Iron and Steel (Group) Company, Wuhan 430080,{2. 2. State Key Laboratory of Coal Combustion, Hua Zhong University of Science and Technology, Wuhan 430074,{2. Technology Center of Wuhan Iron Steel [Group] Company Wuhan 430080 China State Key Laboratory of Coal Combustion Hua Zhong University of Science Technology Wuhan 430074 China

For simulating low Mach number reactive flows, a simple and coupled lattice Boltzmann (CLB) scheme is proposed, by which the fluid density can bear significant changes. Different from the existing hybrid lattice Boltzmann (HLB) scheme and non-coupled lattice Boltzmann (NCLB) scheme, this scheme is strictly lattice Boltzmann style and the fluid density couples directly with the temperature. Because it has got rid of the constraint of traditional thought in lattice Boltzmann scheme,on the basis of the equality among the particle speed c, the time step △t and the lattice grid spacing △x held, both c and △t can be adjusted in this scheme according to a "characteristic temperature" instead of the local temperature. The whole algorithm becomes more stable and efficient besides inheriting the intrinsically outstanding strong points of conventional lattice Boltz-mann scheme. In this scheme, we also take into account different molecular weights of species, so it is more suitable for simulating actual low Mach number reactive flows than previous work. In this paper, we simulated a so-called "counter-flow" premixed propane-air flame, and the results got by our scheme are much better than that obtained by NCLB. And the more important thing is that the exploration in this work has offered a kind of brand-new train of thought for building other novel lattice Boltzmann scheme in the future.

关键词： lattice Boltzmann, low Mach number flows, reactive flows, simulation.

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High-order Soliton Matrix for the Third-order Flow Equation of the Gerdjikov-Ivanov Hierarchy Through the Riemann-Hilbert Method

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 358-378页

作者： Jin-yan zhu Yong {1. School of Mathematical Sciences Shanghai Key Laboratory of Pure Mathematics and Mathematical PracticeEast China Normal UniversityShanghai 200062China College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

The Gerdjikov-Ivanov(GI)hierarchy is derived via recursion operator,in this article,we mainly investigate the third-order flow GI *** the framework of the Riemann-Hilbert method,the soliton matrices of the third-order flow GI equation with simple zeros and elementary high-order zeros of Riemann-Hilbert problem are constructed through the standard dressing *** advantage of this result,some properties and asymptotic analysis of single soliton solution and two soliton solution are discussed,and the simple elastic interaction of two soliton are *** with soliton solution of the classical second-order flow,we find that the higher-order dispersion term affects the propagation velocity,propagation direction and amplitude of the ***,by means of a certain limit technique,the high-order soliton solution matrix for the third-order flow GI equation is derived.

关键词： Gerdjikov-Ivanov hierarchy third-order flow GI equation Riemann-Hilbert method high-order soliton

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Self-templating synthesis of biomass-based porous carbon nanotubes for energy storage and catalytic degradation applications

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Green Energy & Environment 2024年第3期9卷 584-595页

作者： Manman Xu Shiqi Fu Yukai Wen Wei Li Qiongfang zhuo Haida zhu Zhikeng {2. Yuwen {1. Anqi Wang Kai Yan Research Centre for Eco-Environmental Engineering School of Environment and Civil EngineeringDongguan University of TechnologyDongguan523808China School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou510275China

Dwindling energy sources and a worsening environment are huge global problems,and biomass wastes are an under-exploited source of material for both energy and material ***,self-template decoction dregs of Ganoderma lucidum-derived porous carbon nanotubes(ST-DDLGCs)were synthesized via a facile and scalable strategy in response to these ***-DDLGCs exhibited a large surface area(1.31.51.m^(2.g^(-1.)and high pore volume(0.76 cm^(3)g^(-1.),due to the interlacing tubular structures of precursors and extra-hierarchical porous structures on tube *** the ST-DDLGC/PMS system,the degradation efficiency of capecitabine(CAP)reached~97.3%within 1.0 ***,ST-DDLGCs displayed high catalytic activity over a wide pH range of 3–9,and strong anti-interference to these typical and ubiquitous anions in wastewater and natural water bodies(i.e.,H_(2.PO_(4)^(-),NO_(3)^(-),Cl^(-) and HCO_(3)^(-)),in which a ^(1.O_(2.-dominated oxidation was identified and non-radical mechanisms were ***,ST-DDLGC-based coin-type symmetrical supercapacitors exhibited outstanding electrochemical performance,with specific capacitances of up to 32..1.F g^(-1.at 0.5 A g^(-1.,and cycling stability of up to 98.6%after 1.,000 cycles at a current density of 2.A g^(-1..The superior properties of ST-DDLGCs could be attributed to the unique porous tubular structure,which facilitated mass transfer and presented numerous active *** results highlight ST-DDLGCs as a potential candidate for constructing inexpensive and advanced environmentally functional materials and energy storage devices.

关键词： Ganoderma lucidum residue Porous carbon nanotubes Self-template method Wastewater treatment Supercapacitor electrode

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Preparation,characterization,and catalytic performance of a novel methyl-rich Ti-HMS mesoporous molecular sieve with high hydrophobicity

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Science china Chemistry 2010年第6期53卷 1337-1345页

作者： LI XueFeng1.XU ZhiHong1.GAO HuanXin2.& {2. QingLing2.1.ollege of Chemistry and Chemical Engineering,Xuchang University,Xuchang 461.00,{1. 2.6} Research Institute of Petrochemical Technology,{2. 2.1.08,{1. 1. College of Chemistry and Chemical Engineering Xuchang University Xuchang 461000 China2. Shanghai Research Institute of Petrochemical Technology Shanghai 201208 China

A novel methyl-rich Ti-containing hexagonal mesoporous silica (Ti-HMS) molecular sieve with high hydrophobicity has been prepared by a two-step method involving co-condensation followed by vapor-phase methyl *** sample was characterized by XRD,N2.adsorption,FTIR,UV-visible and 2.Si NMR spectroscopies,TG,ICP-AES,and hydrophilicity measurements,and its catalytic performance was evaluated using the epoxidation of cyclohexene as a probe *** Ti-HMS material retains a typical mesoporous structure and compared with a co-condensed Ti-HMS prepared in a one-step method possesses more methyl groups and higher hydrophobicity,and also exhibits better catalytic activity and selectivity.

关键词： two-step methyl grafting high hydrophobicity methyl-rich Ti-HMS epoxidation of cyclohexene

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