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黄土区3种护坡植物三维可视化模拟与根系构型参数分析

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水土保持研究 2025年第1期32卷 218-226页

作者：张旭姚晨杜婷马志强朱宏杰汪艳杜峰中国科学院教育部水土保持与生态环境研究中心中国科学院水利部水土保持研究所中国科学院大学西北农林科技大学水土保持研究所

[目的]对植物根系数字化并进行三维实体可视化模拟，对于了解植物根系形态和为水保工程制图提供植物实物图库都具有重要的理论与实践意义。[方法]逐层挖掘黄土区酸枣、沙棘、狼牙刺3种护坡植物根系，使用3d数字化仪FasTrak获取根系三维... 详细信息

[目的]对植物根系数字化并进行三维实体可视化模拟，对于了解植物根系形态和为水保工程制图提供植物实物图库都具有重要的理论与实践意义。[方法]逐层挖掘黄土区酸枣、沙棘、狼牙刺3种护坡植物根系，使用3d数字化仪FasTrak获取根系三维点阵坐标后利用sketchUp软件对根系进行三维建模并提取根系构型参数。为了建立完整的植物地上地下三维实体图库，同时使用Freescan UE激光扫描仪得到相应地上部点云数据，经soildworks软件渲染后建立植物地上部三维模型。[结果](1)建立了3种植物的地上地下三维实体模型图；(2)3种植物的根幅/根深均大于1(1.10～3.41),根系在水平方向上占有优势，狼牙刺最小为1.10;(3)3种植物冠幅/根幅分别为酸枣(0.25)、沙棘(0.69)、狼牙刺(0.73),均小于1,植物根系较地上部在水平方向上占优；(4)3种植物Fitter拓扑指数均接近于1,分别为酸枣(0.915)、沙棘(0.802)、狼牙刺(0.771),接近于鱼尾型分支；(5)植物根系总根长、总表面积、总体积在上坡方向占比大于50%,均在上坡方向更有优势。[结论]所建立的植物三维模型图对植物还原度高，为整株植物三维可视化模拟提供了一种方法。

关键词：黄土区整株植物三维可视化模拟 sketchUp 根系形态

Microstructure evolution and hot deformation behavior of carbon nanotube reinforced 2009Al composite with bimodal grain structure

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journal of Materials science & Technology 2021年第11期70卷 73-82页

作者： K.Ma Z.Y.liu s.Bi x.x.Zhang B.l.x.ao Z.Y.Ma shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of ScienceShenyang110016China school of Materials science and Engineering University of Science and Technology of China72 Wenhua RoadShenyang110016China school of Materials science and Engineering Guilin University of TechnologyGuilin541004China

The hot deformation behaviors of the bimodal carbon nanotube reinforced 2009Al(CNT/2009Al)composite were studied by establishing processing map and characterizing the microstructure *** results indicate that the grain size in the ultra-fine grained zones was stable during hot deformation,while the coarse grained zones were elongated with their long axis directions tending to be perpendicular to the compression *** temperature with high strain rate(lThR),as well as high temperature with low strain rate(hTlR)could increase the length/width ratio of the coarse grained ***,lThR and hTlR could cause the instable *** instable deformation at lThR was induced by severe intragranular plastic deformation and the localized shear crack,while the instable deformation at hTlR resulted from the more deformation component at the coarse grained zones,and the micro-pore initiation due to CNT re-agglomeration at the boundaries between the coarse and the ultra-fine grained zones.

关键词： Carbon nanotube Bimodal Aluminum matrix composite hot deformation Processing map

Cutting Characteristics of Zr-Based Bulk Metallic glass

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journal of Materials science & Technology 2015年第2期31卷 153-158页

作者： d.x.h.n g.wang j.li K.C.Chan s.To F.F.Wu Y.l.gao Q.j.Zhai laboratory for Microstructures Shanghai University department of Industrial and system Engineering The Hong Kong Polytechnic University

Cutting behavior exerts a considerable influence on the fabrication of bulk metallic glass(BMg) components. In this study,the influences of machining parameters(i.e.,depth of cutting,feed rate,and spindle rate) on the turned surface of a Zr-based BMg after observing the 3d morphologies of this surface were *** results showed that the influence of the spindle rate on the surface morphologies is more substantial as compared to the depth of cutting and the feed rate. Nanoscratch tests were conducted to further characterize the separation mechanism of the chips,which revealed that the chips are torn off the surface of a BMg because of inhomogeneous localized maximum shear stress.

关键词： Bulk metallic glass Ultra-precision machining surf

Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William j.Flerlage Mark l.dell’Acqua Brian M.Cox Fereshteh s.Nugent Uniformed services University of the health sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(simmons et al.,2024).diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through compl.x.interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

China’s participation in the international RRT for I_(c) measurement of superconducting cables organized by IEC/TC90

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superconductivity 2022年第1期1卷 27-33页

作者： j.li Y.shi g.M.Zhang l.W.jing j.x.Zheng C.l.liu W.Yuan Y.s.wang M.song Y.j.xia x.h.Zong Y.W.han d.N.Zheng x.j.Zhou T.Matsushita g.Nishijima The Institute of Physics Chinese Academy of SciencesBeijing 100190China The Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China The Institute of Plasma Physics Chinese Academy of SciencesHefei 230031China Eastern superconductor science&Technology(suzhou)Co LtdSuzhou 215299China guangdong Power grid Corporation Guangzhou 510630China shanghai International superconductor Technology Co LtdShanghai 200444China department of Computer science and Electronics Kyushu Institute of Technology Iizuk1Japan National Institute for Materials scienc5 Tsukuba 305-0003Japan

Currently,IEC/TC90 is working on standardizing the method for measuring critical current(Ic)in superconducting *** the end of 2020,an international round robin test(RRT)was organized,in which five Chinese institutions participated,and four accomplished the *** electric-field versus current(E-I)curves obtained by each institution are highly *** obtained by different institutions are nearly identical after appropriate curve averaging,indicating high reproducibility,except the last participant's inner core *** discrepancy was later determined to be the result of sample cable *** excluding highly deviated data,it is determined that the maximum relative standard uncertainty in I_(c) is 0.7%,and the maximum relative standard uncertainty in n-value is 12.8%.The I_(c)values are comparable to japan's domestic RRT results,but the n-values are significantly *** test results support the dC four-terminal method as a recommended test method,with a target relative uncertainty of less than 2%for the Ic value.

关键词： superconducting cable Round robin test standardization

synthesis, Optical Properties and Photovoltaic Application of the sns Quasi-one-dimensional Nanostructures

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Nano-Micro letters 2013年第1期5卷 1-6页

作者： M.x.wang g.h.Yue Y.d.lin x.Wen d.l.Peng Z.R.geng department of Materials science and Engineering Fujian Key Laboratory of Advanced MaterialsXiamen University department of Materials Engineering Lanzhou Institute of Technology school of Mechatronic Engineering Lanzhou Jiao Tong University

low-toxicity single crystal sn s nanowires had been successfully synthesized by the catalystassistant chemical vapor deposition. Au nanoparticles were applied on the ITO surface as the catalysis, using sn s powder and s powder as forerunners. The structure, morphology and optical properties of the prepared sn s nanowires were characterized. The experimental results show the as-synthesized nanowires are single crystalline with a preferential orientation. The synthesized sn s nanowires show strong absorption in the visible and nearinfrared spectral region, and the direct energy band gap of sn s nanowires is 1.46 e V.

关键词： Nanostructure Chemical vapor deposition Crystal growth Optical property

dynamic mechanical properties,deformation and damage mechanisms of eutectic high-entropy alloy AlCoCrFeNi_(2.1)under plate impact

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journal of Materials science & Technology 2023年第3期134卷 178-188页

作者： s.P.Zhao Z.d.Feng l.x.li x.j.Zhao l.lu s.Chen N.B.Zhang Y.Cai s.N.luo The Peac Institute of Multiscale sciences ChengduChina Key laboratory of Advanced Technologies of Materials Ministry of EducationSouthwest Jiaotong UniversityChengduChina

shock compression and spallation of a eutectic high-entropy alloy(hEA)AlCoCrFeNi_(2.1)with lamellar structure are investigated via plate impact loading with free-surface velocity *** as-cast and postmortem samples are characterized with transmission electron microscopy,electron back-scatter diffraction and scanning electron *** accurate hugoniot equation of state is ***-ter shock compression to∼12 gPa,both the l1_(2)and B_(2)phases retain their ordered *** dislocations in thesslip planes,stacking faults and deformation twins are found in the l1_(2)phase,along with fewer dislocations in thesslip bands in the B(2)***-induced deformation twin-ning within the l1_(2)phase of this hEA is observed as a new deformation mechanism under various load-ing *** spallation,both ductile and brittle damage modes are *** micro voids and cracks prefer to nucleate at the phase boundaries chiefly,then in the B(2)*** similar shock stress,the spall strength of AlCoCrFeNi_(2.1)hEA is about 40%higher than those of other reported dual-phase hEAs due to the high stability of its semi-coherent phase boundaries.

关键词： high-entropy alloy hugoniot spall damage Microstructure

superelasticity and Tunable Thermal Expansion across a Wide Temperature Range

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journal of Materials science & Technology 2016年第8期32卷 705-709页

作者： Y.l. hao h.l. wang T. li j.M. Cairney A.V. Ceguerra Y.d. wang Y. Wang.d. wang E.g. Obbard s.j. li R. Yang shenyang National laboratory for Materials science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China school of Aerospace Mechanical & Mechatronic Engineering University of Sydney Sydney NSW2006 Australia Australian Centre for Microscopy and Microanalysis University of Sydney Sydney HSW2006 Australia state Key laborotory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China state Key laboratory for Mechanical Behavior of Materials and Frontier Institute of science and Technology Xi'an Jiaotong Univemity Xi'an 710049 China department of Materials science and engineering Ohio State University Columbus OH 43210 USA department of Electrical engineering and Telecommunications University of New South Wales Sydney NSW2052 Australia

Materials that undergo a reversible change of crystal structure through martensitic transformation （MT） possess unusual functionalities including shape memory, superelasticity, and low/negative thermal ex- pansion. These properties have many advanced applications, such as actuators, sensors, and energy conversion, but are limited typically in a narrow temperature range of tens of Kelvin. here we report that, by creating a nano-scale concentration modulation via phase separation, the MT can be rendered continuous by an in-situ elastic confinement mechanism. Through a model titanium alloy, we demon- strate that the elastically confined continuous MT has unprecedented properties, such as superelasticity from below 4.2 K to 500 K, fully tunable and stable thermal expansion, from positive, through zero, to negative, from below 4.2 K to 573 K, and high strength-to-modulus ratio across a wide temperature range. The elastic tuning on the MT, together with a significant extension of the crystal stability limit, provides new opportunities to explore advanced materials.

关键词： Ti alloy superelasticity Thermal expansion behavior Temperature characteristic

The lobster Eye Imager for Astronomy Onboard the sATech-01 satellite

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Research in Astronomy and Astrophysics 2023年第9期23卷 66-78页

作者： Z.x.ling x.j.sun C.Zhang s.l.sun g.jin s.N.Zhang x.F.Zhang j.B.Chang F.s.Chen Y.F.Chen Z.W.Cheng W.Fu Y.x.h.n h.li j.F.li Y.li Z.d.li P.R.liu Y.h.lv x.h.Ma Y.j.Tang C.B.wang R.j.xie Y.l.x.e A.l.Yan Q.Zhang C.Y.Bao h.B.Cai h.Q.Cheng C.Z.Cui Y.F.dai d.W.Fan h.B.hu j.W.hu M.h.huang Z.Q.jia C.C.jin d.Y.li j.Q.li h.Y.liu M.j.liu Y.liu h.W.Pan Y.l.Qiu M.sugizaki h.sun W.x.wang Y.l.wang Q.Y.Wu x.P.xu Y.F.xu h.N.Yang x.Yang B.Zhang M.Zhang W.d.Zhang Z.Zhang.d.h.Zhao x.Q.Cong B.W.jiang l.h.li x.B.Qiu j.N.sun d.T.su j.wang C.Wu Z.xu x.M.Yang s.K.Zhang Z.Zhang N.Zhang Y.F.Zhu h.Y.Ban x.Z.Bi Z.M.Cai W.Chen x.Chen Y.h.Chen Y.Cui x.l.duan Z.g Feng Y.gao j.W.he T.he j.j.huang F.li j.s.li T.j.li T.T.li h.Q.liu l.liu R.liu s.liu N.Meng Q.shi A.T.sun Y.M.wang Y.B.wang h.C.Wu d.x xu Y.Q Yang Y.Yang x.s.Yu K.x.Zhang Y.l.Zhang Y.h.Zhang Y.T.Zhang h.Zhou x.C.Zhu j.s.Cheng l.Qin l.wang Q.l.wang M.Bai R.l.gao Z.ji Y.R.liu F.l.Ma Y.j.shi j.su Y.Y.Tan j.Z.Tong h.T.xu C.B.xue g.F.xue W.Yuan National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China school of Astronomy and space science University of Chinese Academy of SciencesBeijing 100049China shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China North Night Vision Technology Co. LTDNanjing 211106China Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China science and Technology on low-light-level Night Vision laboratory Xi'an 710065China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201204China Institute of Electrical Engineering Chinese Academy of ScienceBeijing 100190China National space science Center Chinese Academy of ScienceBeijing 100190China

The lobster Eye Imager for Astronomy(lEIA),a pathfinder of the Wide-field x-ray Telescope of the Einstein Probe mission,was successfully launched onboard the sATech-01 satellite of the Chinese Academy of sciences on2022 july *** this paper,we introduce the design and on-ground test results of the lEIA *** stateof-the-art Micro-Pore Optics(MPO),a wide field of view of 346 square degrees(18.6°×18.6°)of the x-ray imager is *** optical assembly composed of 36 MPO chips is used to focus incident x-ray photons,and four large-format complementary metal-oxide semiconductor(CMOs)sensors,each of size 6 cm×6 cm,are used as the focal plane *** instrument has an angular resolution of 4’-8’(in terms of FWhM)for the central focal spot of the point-spread function,and an effective area of 2-3 cm^(2) at 1 keV in essentially all the directions within the field of *** detection passband is 0.5-4 keV in soft x-rays and the sensitivity is2-3×10^(-11) erg s^(-1) cm^(-2)(about 1 milliCrab)with a 1000 s *** total weight of lEIA is 56 kg and the power is 85 *** satellite,with a design lifetime of 2 yr,operates in a sun-synchronous orbit of 500 km with an orbital period of 95 *** is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOs sensors for x-ray observation,and by optimizing the working setups of the instrumental *** addition,lEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft x-ray band,albeit with limited useful observing time available.

关键词： instrumentation detectors-space vehicles instruments-telescopes-x-rays genera