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Journal of Wuhan University of technology(Materials Science) 2005年第4期20卷 38-42页

作者：孙聚堂 Department of Chemistry Wuhan University Wuhan 430072 China

A proton-transfer complex of 1,2,4,5-benzenetetracarboxylic acid（H4 BtC）with 1,10-phenanthroline（phen）[（H2BtC）^2-·2（Hphen）^＋·（H4BtC）]was synthesized and characterized by IR,UV-Vis spectra and luminescence. the structure was determined by X-ray single crystal *** crystallizes in the triclinic system,space group P-1 with a=7.3767（15）,b=10.704（2）,c=12.890（3）A.α=102.96（3）,β105.71（3）,γ=99.68（3）°,V=926.0（3）A^3,Dc=1.558g/cm^3,z=2,μ（Mo-Kα）=0.121mm^-1 and F（000）=*** final R=0.0401 and wR=0.0862 for 2983 observe reflections with[1〉2σ（I）].It is composed of discrete H4 BtC molecules,H2BtC^2- ANIONS AND [Hphen]^＋ *** extensive hydrogen-bonding associations fonned between the H4 BtC molecules and H2BtC^2- anions result in the formation of a two-dimensional layer,to which the [Hphen]^＋ cations are attached through the hydrogen bonds formed between the carboxyl groups of H4 BtC and the NH groups of [Hphen]^＋.Under the excitation of UV *** emits an intense blue luminescence.

关键词： proton-transfer 1,2,4,5-benzenetetracarboxylic acid 1,10-phenanthroline

Electrically conductive and corrosion resistant coating on Mg–Li alloys,Part Ⅰ: Chemical conversion coating

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Corrosion Communications

Corrosion Communications 2024年第3期15卷 24-35页

作者： Yuheng zhen Cheng Lin Yifan Hu zhichao Ren Peng zhou Baojie Dou Jintao Xiao Jingli sun Xiaoxue Wang Yong Yuan the State Key Laboratory of Rolling and Automation Northeastern University Shenyang National Laboratory for Materials Science Northeastern University Chimie Paristech PSL University CNRS Institut de Recherche Chimie Paris(IRCP) Shanghai Aerospace Equipments Manufacturer Co.Ltd. Shanghai Spaceflight Precision Machinery Institute Beijing Institute of Space Long March Vehicle

Mg–Li alloys are one of the lightest structural materials, but suffer from severe corrosion due to the hyperactivity of Mg and Li. In this work, an electrically conductive and corrosion-resistant chemical conversion coating was fabricated on a duplex Mg–Li alloy LA103z by two different routes: the first route using a conventional immersion treatment（Im-PCCs）; and the second route using a brushing conversion treatment（Br-PCCs）. Results demonstrate that chemical composition of conversion coatings remained, but surface morphology was altered. the Im-PCC depicts many lamellar CaHPO4when the immersion time was longer than 60 s. the Br-PCC shows no lamellas on surface till a treatment time of 120 s. these lamellar crystals are detrimental to the electrical contact resistance（ECR）, and the ECR for the Br-PCC was one order of magnitude lower than that for the Im-PCCs. Corrosion resistance for Br-PCCs, however, was slightly lower than Im-PCCs.

关键词： Mg Li alloy Conversion coating Corrosion performance Electrical contact resistance Brushing conversion treatment

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智能钻杆磁感应传输技术及其信道特性分析

中国石油大学学报（自然科学版） 2013年第6期37卷 172-176,183页

作者：孙浩玉中国石油大学机电工程学院山东青岛266580 胜利石油管理局钻井工艺研究院山东东营257017

分析感应耦合原理并制作耦合器,将仿真与实测相结合,在高频变压器模型基础上建立单个耦合器的准确电路模型。然后对多节耦合器连接的电路特性进行分析,得到每增加一个耦合器就增加了一个谐振回路的规律,进而得到磁感应传输信道的电路模... 详细信息

分析感应耦合原理并制作耦合器,将仿真与实测相结合,在高频变压器模型基础上建立单个耦合器的准确电路模型。然后对多节耦合器连接的电路特性进行分析,得到每增加一个耦合器就增加了一个谐振回路的规律,进而得到磁感应传输信道的电路模型。针对多级信号传输的衰减问题,采用电容补偿的方法,增加谐振频率点的幅值以提高信号传输效率。最后,建立用于随钻信息磁感应传输的实验系统,验证磁感应信道电路模型的有效性。选取模型中的两个谐振点作为通信频点,在20节的传输系统中实现了115.2 kbit/s的通信速率。

关键词：智能钻杆感应耦合器磁感应传输高频变压器模型电路模型电容补偿

Complexities of the turkey-Syria doublet earthquake sequence

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the Innovation 2023年第3期4卷 85-86页

作者： Sidao Ni Heping sun Paul Somerville David AYuen Chris Milliner Hansheng Wang Jiangchun zhou Yifei Cui Innovation Academy of Precision Measurement Science and technology Chinese Academy of SciencesWuhan 430077China AECOM Corporation Los AngelesCA 90071USA Columbia University New YorkNY 10027USA Division of Geological and Planetary Sciences California Institute of TechnologyPasadenaCA 91125USA School of Civil Engineering Tsinghua UniversityBeijing 100084China

WHAt,WHERE,AND WHEN In the early morning of February 6th,2023,an M7.8 earthquake occurred in southeastern t€urkiye near the northern border of *** event initiated a complex sequence of aftershocks,including an M7.6 earthquake about 9 h later and 90 km to the north(Figures 1A and 1B).the earthquake sequence is also referred to as a strong doublet earthquake *** of the two strong earthquakes occurred along two separate branches of the East Anatolia Fault,with lengths of up to 300 km,and some aftershocks occurred in Syria(NEIC/USGS,2023).

关键词： earthquake southeastern north

A telomere-to-telomere genome assembly of zhonghuang 13,a widely-grown soybean variety from the original center of Glycine max

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the Crop Journal 2024年第1期12卷 142-153页

作者： Anqi zhang tangchao Kong Baiquan sun Shizheng Qiu Jiahe Guo Shuyong Ruan Yu Guo Jirui Guo zhishuai zhang Yue Liu zheng Hu tao Jiang Yadong Liu Shuqi Cao Shi sun tingting Wu Huilong Hong Bingjun Jiang Maoxiang Yang Xiangyu Yao Yang Hu Bo Liu tianfu Han Yadong Wang Center for Bioinformatics School of Computer Science and TechnologyHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Ministry of Agriculture Key Laboratory of Soybean Biology(Beijing) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

Soybean(Glycine max)stands as a globally significant agricultural crop,and the comprehensive assembly of its genome is of paramount importance for unraveling its biological characteristics and evolutionary ***,previous soybean genome assemblies have harbored gaps and incompleteness,which have constrained in-depth investigations into ***,we present telomere-to-telomere(t2t)assembly of the Chinese soybean cultivar zhonghuang 13(zH13)genome,termed zH13-t2t,utilizing PacBio Hifi and ONt ultralong *** employed a multi-assembler approach,integrating Hifiasm,NextDenovo,and Canu,to minimize biases and enhance assembly *** assembly spans 1,015,024,879 bp,effectively resolving all 393 gaps that previously plagued the reference *** annotation efforts identified 50,564 high-confidence protein-coding genes,707 of which are ***13-t2t revealed longer chromosomes,421 not-aligned regions(NARs),112 structure variations(SVs),and a substantial expansion of repetitive element compared to earlier ***,we identified 25.67 Mb of tandem repeats,an enrichment of 5S and 48S rDNAs,and characterized their genotypic *** summary,we deliver the first complete Chinese soybean cultivar t2t *** comprehensive annotation,along with precise centromere and telomere characterization,as well as insights into structural variations,further enhance our understanding of soybean genetics and evolution.

关键词： Soybean telomere-to-telomere assembly zhonghuang 13 Structure variations

Feasibility of establishing cerebral ischemia models by using aerocyst-blocking bilateral ascending pharyngeal artery of piglets Imaging assessment

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Neural Regeneration Research 2007年第9期2卷 540-543页

作者： Xiangyu Piao Changkai sun zhe Jin Jing YU Xiaodan Chang Xin tang Hongmei Liu Peiyang zhou Department of Neurology Zhongshan Hospital Affiliated to Dafian University Dalian 116001 Liaoning Province China Dalian Medical University the Brain Disease Institute of Liaoning Province Dalian 116027 Liaoning Province China Department of Circulation Zhongshan Hospital Affiliated to Dalian University Dalian 116001 Liaoning Province China Department of Radiation Zhongshan Hospital Affiliated to Dalian University Dalian 116001 Liaoning Province China Department of Anesthesiology Zhongshan Hospital Affiliated to Dalian University Dalian 116001 Liaoning Province China

BACKGROUND： the cerebral ischemia and ischemia/reperfusion animal models are used to simulate the human cerebrovascular diseases is one of the popular topics of neurological science recently. to study the pathophysiology, pathogenesis, prophylaxis and treatment of ischemic cerebrovascular diseases and to establish the ideal animal model that is the most similar to the human cerebral ischemia, are the topics that the people generally cared about. OBJECtIVE： to evaluate the effects of aerocyst-blocking bilateral ascending pharyngeal artery on the establishment of cerebral ischemia models by using digital subtraction angiography （DSA）, magnetic resonance diffusion-weighted imaging （DWI） and magnetic resonance perfusion-weighted imaging （PWI）. DESIGN： Repetitive measure animal experiment. SEttING： zhongshan Hospital Affiliated to Dalian University. MAtERIALS： the experiment was carried out in the Animal Laboratory （Provincial Laboratory）, zhongshan Hospital of Dalian Univeristy from January to May 2006. A total of 14 domestic piglets, of 6 months old, weighing 12-15 kg, of either gender, were selected from Animal Experimental Center, Dalian University. Multistar t.O.P digital subtraction angiography machine was provided by Siemens Company, German. MEtHODS： Aerocyst-blocking bilateral ascending pharyngeal artery was used to establish cerebral ischemia models. And then, Multistar t.O.P. DSA was used for imaging of cerebral vessels before blocking, during blocking and at 0.5 and 2 hours after ischemia perfusion. GE Signa 1.5 t supraconduction magnetic resonance imaging was used for DWI examination; in addition, PWI was used based on focal sites and areas. Otherwise, magnetic resonance imaging （MRI） was used to detect signal changes of t1WI and t2WI in ischemic areas. MAIN OUtCOME MEASURES： Analytic results of DSA, DWI, PWI and MRI. RESULtS： All 14 experimental piglets were involved in the final analysis. ① DSA： the blood flow of bilateral ascending pharyngeal arter

关键词： cerebral ischemia piglet diffusion weighted imaging perfusion weighted imaging

支持多时隙业务的MtS-Clos网络结构及其建模分析

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电子与信息学报 2012年第5期34卷 1226-1230页

作者：孙倩许都电子科技大学宽带光纤传感与通信教育部重点实验室成都611731

多级Clos网络是一种典型的可扩展交叉互连结构,在数据通信和计算机并行网络中有着广泛应用。基于传统三级Clos网络C(m,n,r)的理论分析表明,当满足m 3 2n-1时该网络是严格无阻塞的。该文针对多时隙业务,利用可快速实现时隙交叉的单级交... 详细信息

多级Clos网络是一种典型的可扩展交叉互连结构,在数据通信和计算机并行网络中有着广泛应用。基于传统三级Clos网络C(m,n,r)的理论分析表明,当满足m 3 2n-1时该网络是严格无阻塞的。该文针对多时隙业务,利用可快速实现时隙交叉的单级交换模块,构建了一种新型的MtS-Clos交换网络结构C(m,n,r,t)(Multipletime Slot Clos network)。利用时隙交叉能力,该结构在保留原有网络特性的同时可提供更为理想的交换性能。采用随机分析模型,对该结构的阻塞率进行了理论分析,结果表明当中间级规模m=n+k,k是一个很小的非负整数,网络即达到无阻塞。对该结构的数值仿真有同样的结论。因此,该结构及分析结果对下一代大容量交换设备的设计,具有良好的参考价值。

关键词：多级互联网络阻塞率多时隙 Clos网络

Mapping an on-chip terahertz antenna by a scanning near-field probe and a fixed field-effect transistor

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Chinese Physics B 2015年第2期24卷 485-489页

作者：吕利孙建东 Roger A.Lewis 孙云飞吴东岷蔡勇秦华 Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences Institute for Superconducting and Electronic Materials and School of Physics University of WollongongWollongong i-Lab Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of Sciences

In the terahertz（tHz） regime,the active region for a solid-state detector usually needs to be implemented accurately in the near-field region of an on-chip *** of the near-field strength could allow for rapid verification and optimization of new antenna/detector ***,we report a proof-of-concept experiment in which the field mapping is realized by a scanning metallic probe and a fixed AlGaN/GaN field-effect *** results agree well with the electromagnetic-wave *** results also suggest a field-effect tHz detector combined with a probe tip could serve as a high sensitivity tHz near-field sensor.

关键词： terahertz detector terahertz antenna near-field probe high electron mobility transistor

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求解广义混合单调变分不等式的预解算子方法

高等学校计算数学学报 2006年第3期28卷 262-271页

作者：孙洪春孙敏临沂师范学院数学系枣庄学院数学与信息科学系

1引言设R;表示n维欧式空间,‖·‖和＜,＞分别表示R;中的范数和内积,K为R;中的非空闭凸集,（?）是R;到R∪{+∞)的算子．对于给定的非线性算子t,g：R;→R;,考虑下面的广义混合变分不等式,记为GMVI：求u∈R;满足（tu）;(g（v）-g（tu）)+... 详细信息

1引言设R;表示n维欧式空间,‖·‖和＜,＞分别表示R;中的范数和内积,K为R;中的非空闭凸集,（?）是R;到R∪{+∞)的算子．对于给定的非线性算子t,g：R;→R;,考虑下面的广义混合变分不等式,记为GMVI：求u∈R;满足（tu）;(g（v）-g（tu）)+（?）(g（v）)-（?）(g（u）)（?）0,（?）g（v）∈R;．（1）假如（?）是R;中非空闭凸集K的指标集,即,（?）(u)≡I;（u）=（?）．此时GMVI等价于下面的广义变分不等式：求u∈R;,g（u）∈K满足

关键词： general mixed monotone variational inequalities operator-splitting method resolvent operator maximal monotone operator global convergence

CCD非线性效应对双频光栅三维面形测量的影响

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中国光学 2021年第3期14卷 661-669页

作者：乔闹生孙萍湖南文理学院国际学院湖南常德415000 湖南省洞庭湖生态经济区协同创新中心湖南常德415000 湖南文理学院数理学院湖南常德415000 成都信息工程大学光电工程学院四川成都610225 电子科技大学电子薄膜与集成器件国家重点实验室四川成都6100054

在测量系统中,CCD的非线性效应会影响复杂光学三维面形的测量精度,针对这一问题,提出采用双频光栅投影消除CCD的非线性效应以提高测量精度。首先,分析了CCD非线性效应对三维面形测量的影响,给出了该情况下出现频谱混叠的解析推导和物理... 详细信息

在测量系统中,CCD的非线性效应会影响复杂光学三维面形的测量精度,针对这一问题,提出采用双频光栅投影消除CCD的非线性效应以提高测量精度。首先,分析了CCD非线性效应对三维面形测量的影响,给出了该情况下出现频谱混叠的解析推导和物理解释。然后,讨论了CCD非线性效应下的双频光栅测量原理,分析了此时变形条纹的光强分布及其经傅立叶变换后得到混叠频谱的原理。最后,给出了由等效波长来衡量测量精度的方法,推出了使用双频光栅投影测量三维面形高度信息的基本公式,并进行了理论分析。对最大绝对值与平均绝对值分别为24.3181 mm和1.0839 mm的物体进行仿真分析,测量值与实际值之间的最大绝对高度误差与平均绝对高度误差分别为0.8950 mm和0.0622 mm,提高双频光栅基频后,其对应值分别减小为0.3710 mm和0.0232 mm;在实验结果显示,当双频光栅的基频都增加2.5倍后,频谱中的基频与高级频谱间分离较好,测量精度提高。因此,采用双频光栅投影消除CCD非线性效应具有较强的实用性和很好的发展前景。

关键词：三维面形测量双频光栅 CCD非线性效应频谱混叠测量精度