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Distribution of phytoplankton community and its influence factors in an urban river network,East China

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Frontiers of Environmental Science & Engineering 2018年第6期12卷 133-144页

作者： Ling Sun Hui wang Yuanqing Kan shiliang wang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Tianjin Key Laboratory of Animal and Plant Resistance College of Life SciencesTianjin Normal UniversityTianjin 300387China Tianjin Academy of Environmental Sciences Tianjin 300191China School of Geography and Tourism Qufu Normal UniversityRizhao 276826China

To reveal the distribution characteristics of phytoplankton and the main influence factors under different conditions in the urban rivers, the investigations were conducted during autumn and winter 2014 in Changzhou City, East China. 178 taxa of phytoplankton belonging to 28 functional assemblages were identified. In autumn, the phytoplankton community compositions have high similarity for enhanced hydrological connectivity. The chlorophytes and diatoms (prevailing functional groups C, F, J, P), together with euglenoids (W1), showed high proportions of biomass in the main rivers and connected rivers. It was related to the well mixed eutrophic conditions. The phytoplankton community exhibited spatiotemporal heterogeneity in winter. Affected by the low water level and temperature, the free-living phytoflagellates (X2) replaced groups F and J in the main rivers. Phytoplankton productivity was the highest in the Tongji River. Chlorophytes Dictyosphaerium ehrenbergianum and Chlamydobotrys stellata had an overwhelming superiority during the winter bloom. They were significantly correlated with ammonium, total phosphorus and biochemical oxygen demand. Affected by tail water supply, the diatoms (MP) and euglenoids (W1) dominated in a beheaded river. The multivariate analyses based on the phytoplankton functional groups helped to evaluate the relationships and variations between the urban rivers. The redundancy analysis (RDA) results showed that nitrate nitrogen, water temperature, total nitrogen and total suspended solids were the main influence factors on the phytoplankton community. Except MP, the prevailing groups all showed significant negative correlations with nitrate nitrogen. Availability and utilization of dissolved inorganic nitrogen and hydrodynamic conditions affected the phytoplankton distribution.

关键词： Phytoplankton composition Spatiotemporal distribution Functional groups Nitrate nitrogen Winter bloom

Achievements in burn surgery over the past 50 years in China

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Frontiers of Medicine 2008年第4期2卷 332-336页

作者： shiliang wang Institute of Burn Research Southwest HospitalState Key Laboratory of TraumaBurns and Combined Injurythe Third Military Medical UniversityChongqing 400038China

This paper reflects on the advancements of clinical and scientific research in the field of burn sur-gery in *** includes emergency care of massive burns,resuscitation,anti-infection,prevention and cure of internal organ injuries,metabolic and nutritional sup-port,wound repair and rehabilitation,and special types of burns;it also covers pathology,microbiology,immunology,cell biology,molecular biology,and tissue engineering.

关键词： burn surgery China

Holographic p-wave superfluid with Weyl corrections

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Science China(Physics,Mechanics & Astronomy) 2020年第3期63卷 33-43页

作者： YongHao Huang QiYuan Pan Wei-Liang Qian JiLiang Jing shiliang wang Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education Synergetic Innovation Center for Quantum Effects and Applicationsand Department of PhysicsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China Escola de Engenharia de Lorena Universidade de Sao PauloLorena 12602-810Brazil Faculdade de Engenharia de Guaratinguetá Universidade Estadual PaulistaGuaratingueta 12516-410Brazil School of Physics and Electronics Central South UniversityChangsha 410083China

In this work,we study the effects of the Weyl corrections on the p-wave superfluid phase transition in terms of an EinsteinMaxwell theory coupled to a complex vector *** the probe limit,it is observed that the phase structure is significantly modified owing to the presence of the higher order Weyl *** latter,in general,facilitates the emergence of the superfluid phase as the condensate increases with the Weyl coupling measured byγ.Moreover,several features about the phase structure of the holographic superfluid are carefully *** a specific region,the phase transition from the normal phase to the superfluid phase is identified to be the first order,instead of being the second order,as in the cases for many holographic *** carrying out a numerical scan of model parameters,the boundary dividing these two types of transitions is located and shown to be rather sensitive to the strength of Weyl ***,a feature known as"Cave of Winds",associated with the emergence of a second superfluid phase,is observed for specific choices of model ***,it becomes less prominent and eventually disappears asγ***,for temperature in the vicinity of the critical one for vanishing superfluid velocity,denoted by T0,the supercurrent is found to be independent of the Weyl *** calculated ratio,of the condensate with vanishing superfluid velocity to that with maximal superfluid velocity,is in good agreement with that predicted by Ginzburg-Landau *** compared with the impact on the phase structure owing to the higher curvature corrections,the findings in our present study demonstrate entirely different *** implications are discussed.

关键词： AdS/CFT correspondence Weyl corrections holographic superfluid

A laterally sensitive colloidal probe for accurately measuring nanoscale adhesion of textured surfaces

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Nano Research 2019年第2期12卷 389-396页

作者： Soren Zimmermann Waldemar Klauser James Mead shiliang wang Han Huang Sergej Fatikow Department of Computing Science University of Oldenburg Oldenburg D-26129 Germany School of Mechanical and Mining Engineering The University of Queensland Brisbane 4072 Australia School of Physics and Electronics Central South University Changsha 410083 China

Adhesiion assessment of nanoscale contacts is a critical capability for the development of future nanoelectromechanical systems and nanobiotechnology devices. However, experimental approaches to investigate interactions on micro- and nanostructured surfaces have predominantly been restricted to capturing adhesion force in the normal direction. This provides limited information about the multidimensional nature of surface texture and related interaction mechanisms. Here the design, fabrication, and application of a unique atomic force microscope probe is presented that consists of a focused ion beam-milled cantilever decorated with a colloidal particle. The probe is specifically developed for characterizing textured surfaces with lateral force feedback. Pull-off tests that map the adhesive interaction in microscale cavities are performed to exami ne the capability of the probe. Normal and lateral adhesive forces duri ng nano scale contact are accurately obtai ned and the adhesi on en ergy of the con tact interface is thus determi ned. An in-depth un dersta nding of the effects of surface texture and the correlati on of adhesi on and fricti on is dem on strated. The proposed methodology en ables dedicated in vestigatio ns of in terfacial in teracti on on various norvplanar surfaces. It can be used for un dersta nding the complex in terplay of adhesi on, con tact, and fricti on forces at nano scale, which may facilitate significant advances in challenging research areas such as fibrillar adhesion.

关键词： nanoscale adhesion friction atomic force microscope colloidal probe lateral sensitivity

Effects of degree of graphitization of C shells on microwave absorption of Fe-C core-shell nanoparticles with excellent comparability

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Journal of Materials Science & Technology 2024年第12期179卷 1-8页

作者： Daitao Kuang Yonghua Tian Weijie Duan Zhikun Tian Xiaogang Sun shiliang wang School of Computational Science and Electronics Hunan Institute of EngineeringXiangtan 411104China School of Physics and Electronics Central South UniversityChangsha 410083China College of Mechanical Engineering Hunan Institute of EngineeringXiangtan 411104China

In this study,Fe-C core-shell nanoparticles with identical metal core sizes and C shell thicknesses but varying degrees of graphitization of C shells were fabricated using metal-organic chemical vapor depo-sition and subsequent *** to the identical metal core,these nanoparticles exhibite a similar permeability,but significantly varying permittivity depending on how much C shells have been *** was discovered that proper graphitization of Fe-C nanoparticles annealed at 1350 ℃ can pro-duce excellent microwave absorption(MA),decent dielectric loss tangent in high frequency region,and moderately strong dielectric loss and attenuation ***,the threshold value of 1/ω is discovered to be a crucial parameter in the theoretical analysis of nonlinear behavior of polarization loss,and thus MA performance of the *** research offers a useful method for creating metal-C nanoparticles with various levels of C shell *** also provides a clear answer to the crucial question of how the level of C shell graphitization affects the MA performance of metal-C *** results may serve as a reference for the development and mechanism analysis of highly effective metal-C based absorbers.

关键词： Fe-C C shell Graphitization degree Microwave absorption

Catalyst-free synthesis and mechanical characterization of TaC nanowires

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Science China(Physics,Mechanics & Astronomy) 2021年第5期64卷 43-53页

作者： shiliang wang Liang Ma James Lee Mead Shin-Pon Jui Guodong Li Han Huang School of Physics and Electronics Central South University Changsha 410083China School of Mechanical and Mining Engineering.The University of Queensland Brisbane QLD 4072Australia Deparment of Computing Science University of OldenburgOldenburg D-26129Germany Deparment of Mechanical and Electro-Mechanical Engineering Sun Yat-sen UniversiyKaohsiung 804China Deparment of Medicinal and Applied Chemistry Kaohsiung Medical UniversityKaohsiung 807China State Key Laboratory of Powder Metallurgw Central South UniversityChangsha 410083China

TaC nanowires are expected to be an ideal reinforcing material in ultra-high-temperature ceramics. However, their growth mechanisms and mechanical properties remain unclear, and low-cost large-scale synthesis has not been realised. In this study,bulk synthesis of [100]-oriented TaC nanowires is accomplished by carbothermal synthesis through a direct vapor-solid mechanism. Thermal resonance test results show that the synthesized square TaC nanowires with cross-sectional side-lengths of 65 to 497 nm have a size-independent Young’s modulus of(510.6±12.6) GPa;very close to the corresponding values of their bulk counterparts, but differing considerably from previously published measurements. Molecular dynamics(MD) simulations show that TaC nanowires with side-lengths of above 15 nm have a constant Young’s modulus of 517 GPa, and size effects on the modulus values should only occur at side-lengths below 15 nm. During bending tests, the TaC nanowires fracture into several segments in a brittle mode, and exhibit an increasing fracture strain from 1.88% to 4.28% as their side-length decreases from 489 to 90 nm. Weibull statistics analyses and TEM observations indicate that the failure of the nanowires should be primarily dependent on the number and size of surface defects. MD simulations further reveal that the defect-free TaC nanowires fail brittlely at a theoretical strain up to 5.76%.

关键词： tantalum carbide nanowires carbothermal synthesis vapor-solid mechanism mechanical properties

Frictional shear stress of ZnO nanowires on natural and pyrolytic graphite substrates

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Friction 2022年第12期10卷 2059-2068页

作者： Lizhen HOU Maofen HOU Tursunay YIBIBULLA James Lee MEAD Sergej FATIKOW shiliang wang Han HUANG Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education School of Physics and Electronic ScienceHunan Normal UniversityChangsha 410081China School of Physics and Electronics Central South UniversityChangsha 410083China Division Microrobotics and Control Engineering Department of Computing ScienceUniversity of OldenburgOldenburg D-26129Germany School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQLD 4072Australia

The friction behaviour of ZnO nanowires on natural graphite(NG)and highly oriented pyrolytic graphite(HOPG)substrates was tested in ambient conditions by use of optical microscopy based *** on the step-free and waviness-free NG substrate exhibit a diameter-independent nominal frictional shear stress of 0.48 MPa,and this provides a benchmark for studying how the surface topography of graphite influences nanowire *** on the HOPG substrate present a significant diameter-dependent frictional shear stress,increasing from 0.25 to 2.78 MPa with the decrease of nanowire diameter from 485 to 142 *** waviness of HOPG has a limited effect on the nanowire friction,as a nanowire can fully conform to the *** surface steps on the HOPG can significantly enhance the nanowire friction and lead to a much higher frictional shear stress than that on NG due to mechanical blocking and the presence of a Schwoebel barrier at step *** surface steps,however,can also generate small wedge-shaped gaps between a nanowire and substrate,and thus reduce the nanowire *** the decrease in nanowire diameter,the capacity for the nanowire to better conform to the substrate reduces the length of the wedge-shaped gaps,leading to the observed increase in nanowire *** results have improved our understanding of the unique friction behaviour of *** an improved understanding is expected to benefit the design and operation of nanowire-friction-based devices,including bio-inspired fibrillar adhesives,soft grippers,rotary nanomotors,and triboelectric nanogenerators.

关键词： frictional shear stress nanowires graphite surface step waviness

SDG721 and SDG705 are required for rice growth

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Journal of Integrative Plant Biology 2018年第7期60卷 530-535页

作者： Pengfei Jiang shiliang wang Aziz Ul Ikram Zuntao Xu Haiyang Jiang Beijiu Cheng Yong Ding National Engineering Laboratory of Crop Stress Resistance/Key Laboratory of Crop Biology of Anhui Province School of Life SciencesAnhui Agricultural UniversityHefei 230036China CAS Center for Excellence in Molecular Plant Sciences School of Life SciencesUniversity of Science&Technology of ChinaHefei 230027China

Summary H3K4me3 plays important roles in development, transcription, and environmental responses. Here, we report that SDG721 （SET-domain group protein 721） and SDG705 are involved in regulating rice development. SDG721 and SDG705 encode TRITHORAX-Iike proteins, which appear to modulate H3K4 methylation levels. Loss of SDG721 and SDG705 function resulted in GA-deficient phenotypes, including semi-dwarfism, reduced cell length, and reduced panicle branching.

关键词： SDG721 and SDG705 are required for rice growth length GA ATX Figure

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西南医院全军烧伤研究所的我

中华烧伤杂志 2018年第8期34卷 500-502页

作者：汪仕良陆军军医大学第三军医大学第一附属医院全军烧伤研究所、创伤、烧伤与复合伤国家重点实验室重庆400038

我从事外科、烧伤医学工作61年，是我国第1批从事烧伤专业的医师，参与救治烧伤患者万余例，曾至全国数十城市、地区会诊，抢救近百批次烧伤病例，为形成我国独特烧伤救治方案做出贡献。1985年，创建烧伤代谢营养实验室，在开展医疗工... 详细信息

我从事外科、烧伤医学工作61年，是我国第1批从事烧伤专业的医师，参与救治烧伤患者万余例，曾至全国数十城市、地区会诊，抢救近百批次烧伤病例，为形成我国独特烧伤救治方案做出贡献。1985年，创建烧伤代谢营养实验室，在开展医疗工作的同时进行烧伤代谢营养系列研究。提出新理论，即除创面外其他途径（内脏尤其是肠道）也可引发高代谢，即＂肠源性高代谢＂。如胃肠道功能尚存，早期喂养、肠道营养优于延迟喂养、静脉营养，可促进烧伤后胃肠道复苏，减轻肠道损害，调节下丘脑、垂体功能，降低高代谢。20世纪80年代末，通过测定105例成年烧伤患者及正常成人静息能量消耗，提出我国第1个烧伤成人热量供应公式。已发表论文340篇，国际会议交流近50篇，参编专著53部，其中主编、副主编9部，主编的《烧伤代谢营养学》是我国第1部烧伤代谢营养专著。共获得国家、军队/省部级的科技、医疗、教学奖励24项，其中国家科学技术进步二等奖2项（分别为第1、第2作者）。1988—1999年任西南医院全军烧伤研究所所长期间，研究所被评为＂总后基层建设标兵单位＂，并荣立集体一、二等功。曾任中华医学会烧伤外科学分会副主任委员、《中华烧伤杂志》主编等职务。

关键词：烧伤代谢营养烧伤成人热量供应公式胃肠道复苏早期喂养肠源性高代谢