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Self-assembly of InAs quantum dots on GaAs（O01） by molecular beam epitaxy

Frontiers of physics 2015年第1期10卷 7-58页

作者： ju wu peng jin Key Laboratory of Semiconductor Materials Science and Beijing Key Laboratory ofLow-dimensional Semiconductor Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 China

Currently, the nature of self-assembly of three-dimensional epitaxial islands or quantum dots （QDs） in a lattice-mismatched heteroepitaxial growth system, such as InAs/GaAs（001） and Ge/Si（001） as fabricated by molecular beam epitaxy （MBE）, is still puzzling. The purpose of this article is to discuss how the self-assembly of InAs QDs in MBE InAs/GaAs（001） should be properly understood in atomic scale. First, the conventional kinetic theories that have traditionally been used to interpret QD self-assembly in heteroepitaxial growth with a significant lattice mismatch are reviewed briefly by examining the literature of the past two decades. Second, based on their own experimental data, the authors point out that InAs QD self-assembly can proceed in distinctly different kinetic ways depending on the growth conditions and so cannot be framed within a universal kinetic theory, and, furthermore, that the process may be transient, or the time required for a QD to grow to maturity may be significantly short, which is obviously inconsistent with conventional kinetic the- ories. Third, the authors point out that, in all of these conventional theories, two well-established experimental observations have been overlooked： i） A large number of ＂floating＂ indium atoms are present on the growing surface in MBE InAs/GaAs（001）; ii） an elastically strained InAs film on the GaAs（001） substrate should be mechanically unstable. These two well-established experimental facts may be highly relevant and should be taken into account in interpreting InAs QD formation. Finally, the authors speculate that the formation of an InAs QD is more likely to be a collective event involving a large number of both indium and arsenic atoms simultaneously or, alternatively, a morphological/structural transformation in which a single atomic InAs sheet is transformed into a three-dimensional InAs island, accompanied by the rehybridization from the sp2-bonded to sp3- bonded atomic configuration of both indium an

关键词： molecular beam epitaxy InAs quantum dots

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Dermatitis bullosa caused by the immune checkpoint inhibitor camrelizumab:A case report

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World Journal of Clinical Cases 2025年第8期13卷 15-21页

作者： Yuan-jing Jiang Lu wu Xiao Yang Yu Pu Bing-Jie Ning Na peng Xiao-ju Zhu Cancer Center Daping HospitalArmy Medical UniversityChongqing 400042China

BACKGROUND Since the advent of the 20th century,alongside the progression of medical science and technological advancements,immunotherapy has emerged as a pivotal thera-peutic approach for tumor patients subsequent to undergoing radiotherapy and ***(camrelizumab),a flagship drug in the realm of immuno-therapy,functions as a monoclonal antibody specifically targeting the progra-mmed death protein 1(PD-1).This drug engages with the human PD-1 receptor,effectively inhibiting the PD-1/programmed death ligand 1 signaling *** inhibition results in the restoration of T cell activity and the induction of an anti-tumour ***,it is noteworthy that such interference could lead to immune-related adverse events resembling autoimmune *** grow-ing availability and clinical use of immune checkpoint inhibitors have raised sig-nificant clinical concerns regarding their *** instances of immune-related adverse reactions and the associated management strategies have been extensively *** identification and diagnosis,coupled with multidi-sciplinary consultation and the prompt administration of immunosuppressants,can effectively address severe immune-related adverse *** SUMMARY Arimab(camrelizumab),a monoclonal antibody targeting programmed death protein 1(PD-1),disrupts the PD-1/programmed death ligand 1(PD-L1)inter-action,reactivating T cell function and triggering anti-tumor ***,this disruption may trigger immune-mediated adverse events akin to autoim-mune *** 2.8%of such events manifest as immune-related dermatologic reactions,with 0.7%classified as grade 3,which are infrequently ***,this study describes a case of grade 3 bullous dermatitis occur-ring 15 days after initiating camrelizumab *** patient,a 67-year-old male with oesophageal squamous cell carcinoma,received camrelizumab plus paclitaxel alongside chemotherapy and radiotherapy in early ***

关键词： Camrelizumab Anti-programmed cell death protein-1 blockade Skin-related adverse events Immune-related dermatitis Case report

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Application of Accelerometer Data in Precise Orbit Determination of GRACE-A and-B

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Chinese Journal of Astronomy and Astrophysics 2008年第5期8卷 603-610页

作者： Dong-ju peng Bin wu Shanghai Astronomical Observatory CAS Shanghai 200030 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

We investigate how well the GRACE satellite orbits can be determined using the on- board GPS data combined with the accelerometer data. The preprocessing of the accelerometer data and the methods and models used in the orbit determination are presented. In order to assess the orbit accuracy, a number of tests are made, including external orbit comparison, and through Satellite Laser Ranging （SLR） residuals and K-band ranging （KBR） residuals. It is shown that the standard deviations of the position differences between the so-called precise science orbits （PSO） produced by GFZ, and the single-difference （SD） and zero-difference （ZD） dynamic orbits are about 7 cm and 6 cm, respectively. The independent SLR validation indicates that the overall root-mean-squared （RMS） errors of the SD solution for days 309 - 329 of 2002 are about 4.93cm and 5.22cm, for GRACE-A and B respectively; the overall RMS errors of the ZD solution are about 4.25 cm and 4.71 cm, respectively. The relative accuracy between the two GRACE satellites is validated by the KBR data to be on a level of 1.29cm for the SD, and 1.03 cm for the ZD solution.

关键词： celestial mechanics- ephemerides - methods numerical

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Fluvial geomorphology of the Middle Reach of the Huai River

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International Journal of Sediment Research 2014年第1期29卷 24-33页

作者： Bang-yi YU peng wu jue-yi SUI Xing-ju YANG jin NI Research Institute of Water Resources Engineering of Anhui Province Environmental Engineering Program University of Northern British Columbia

The Middle Reach of the Huai River（MRHR） flows northeast into the Hongzehu *** entering the Hongzehu Lake,the Huai River has a braided channel which is shallow and wide,and the riverbed has a negative *** on the characteristics of the MRHR,this river reach can be divided into the following sections:a quasi-straight（or mildly curved） section,a bend section,and a braided *** majority of the MRHR is *** this paper,several parameters are used to assess the geomorphology of the *** analyses are performed to establish a relationship between the span length "L" and channel width "B" for different channel *** relationship between the meandering length "S" and bankfull channel width "B" is also *** indicate that the bankfull channel width "B",the bankfull cross sectional area "A" and the average flow depth "H" are mainly dependent on the dominant discharge in the channel.A relationship is derived that describes the dependency of the curvature radius "R" on the dominant discharge "Q",water surface slope "J" and the turning angle;.

关键词： Braided channel Dominant discharge Huai River Channel pattern

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内冲击激发式安全雷管的研制与适配性测试

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火工品 2025年第1期 1-6页

作者：邓小娟代鹏举董金龙刘晓娟王爱上海鲲程电子科技有限公司上海201100 广东宏大民爆集团有限公司广东广州510000 湖南湘科控股集团有限公司湖南长沙410000 江西新余国泰特种化工有限责任公司江西新余338000 湖南神斧集团湘南爆破器材有限责任公司湖南永州425000

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的... 详细信息

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的起爆和传爆过程;通过与不同点火药的适配测试,以及对起爆能力、延期精度等关键功能的全面评估,验证了IID雷管在与LTNR和K-K等药剂适配时,各项性能均满足行业标准。此外,IID雷管结构工艺简单、安全环保,具有广泛的应用前景。

关键词：安全雷管数码电子雷管内冲击激发无起爆药雷管激发组件

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Microstructure and shear properties evolution of Mn-doped SAC solder joint under isothermal aging

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Journal of Iron and Steel Research International 2023年第8期30卷 1650-1660页

作者： Cheng-ming Li Shu-jin Chen Shan-shan Cai ju-bo peng Xiao-jing Wang Ying-wu Wang School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina R&D Center Yunnan Tin Group(Holding)Co.Ltd.Kunming 650000YunnanChina Modern School of Engineering Yunnan UniversityKunming 650091YunnanChina

The effects of Mn addition(0.005,0.01,0.03,0.05,and 0.07 wt.%)on microstructure,shear mechanical behavior,and interfacial thermal stabilities of SAC305 joints were investigated under isothermal aging temperatures of 170 C with different aging time(0,250,500,and 750 h).It is found that Mn addition can increase fracture energy of joints without decreasing the shear *** the microstructures have transformed from the eutectic net-like structure in SAC305 solder joints into the structures based onβ-Sn matrix with intermetallic compounds(IMCs)*** doping 0.07 wt.%Mn,the Cu_(6)Sn_(5) growth along the SAC305/Cu interface during thermal aging can be inhibited to some *** isothermal aging at 170°C,the maximum shear force of solder joint decreases continuously with aging time increasing,while the fracture energy rises first and then decreases,reaching the maximum at 500 h compared by that with the microstructure ***_(3)Sn growth between Cu_(3)Sn_(5)/Cu interface has been retarded most at the aging time of 250 h with 0.07 wt.%Mn-doped *** the aging time prolonging,the inhibition effect of Mn on CusSn IMC layer becomes *** strengthening effect of Mn can be explained by precipitation strengthening,and its mechanical behavior can be predicted by particle strengthening model proposed by Orowan.

关键词： SAC305 solder Mn doping Shear mechanical behavior Isothermal aging Interfacial intermetallic compound

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Research and development of fringe projection-based methods in 3D shape reconstruction

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第6期7卷 1026-1036页

作者： wu Lu-shen peng Qing-jin Department of Mechanical and Electronic Engineering Nanchang University Nanchang 330029 China Department of Mechanical and Industrial Engineering University of Manitoba R3T 5V6 Canada

This paper discusses current research and development of fringe projection-based techniques. A system based on Fourier transform profilometry (FTP) is proposed for three-dimensional (3D) shape recovery. The system improves the method of phase unwrapping to gain accurate 3D shapes of objects. The method uses a region-growing algorithm for the path prediction guided by the quality map to increase the recovering accuracy and provides a fast and simple tool for 3D shape recovery. The shape measurement and data recovery are integrated to offer a new method of 3D modelling. Examples are presented to verify the feasibility of the proposed method.

关键词： 3D modelling Fringe projection Quality map 3D measurement Reverse engineering

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Prospects for measuring dark energy with 21 cm intensity mapping experiments:A joint survey strategy

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 38-47页

作者： peng-ju wu Yichao Li jing-Fei Zhang Xin Zhang Key Laboratory of Cosmology and Astrophysics(Liaoning Province)&Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Key Laboratory of Data Analytics and Optimization for Smart Industry(Ministry of Education) Northeastern UniversityShenyang 110819China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern UniversityShenyang 110819China

The 21 cm intensity mapping(IM)technique provides us with an efficient way to observe the cosmic large-scale structure(LSS).From the LSS data,one can use the baryon acoustic oscillation and redshift space distortion to trace the expansion and growth history of the universe,and thus measure the dark energy *** this paper,we make a forecast for cosmological parameter estimation with the synergy of three 21 cm IM ***,we adopt a novel joint survey strategy,FAST(0

关键词： neutral hydrogen sky survey 21 cm intensity mapping dark energy large-scale structure joint survey strategy

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Hierarchical parameter estimation of DFIG and drive train system in a wind turbine generator

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Frontiers of Mechanical Engineering 2017年第3期12卷 367-376页

作者： Xueping PAN Ping ju Feng wu Yuqing jin College of Energy and Electrical Engineering Hohai UniversityNanjing 211100 China

A new hierarchical parameter estimation method for doubly fed induction generator （DFIG） and drive train system in a wind turbine generator （WTG） is proposed in this paper. Firstly, the parameters of the DFIG and the drive train are estimated locally under different types of disturbances. Secondly, a coordination estimation method is further applied to identify the parameters of the DFIG and the drive train simultaneously with the purpose of attaining the global optimal estimation results. The main benefit of the proposed scheme is the improved estimation accuracy. Estimation results confirm the applicability of the proposed estimation technique.

关键词： wind turbine generator DFIG drive train system hierarchical parameter estimation method trajectory sensitivity technique

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On the Energy Transfer of a Colinear OH+O System

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Chemical Research in Chinese Universities 2001年第1期17卷 88-94页

作者： wu Tao CHEN Xian yang peng Jian bo ju Guan Zhi State Key Laboratory of Coordination Chemistry Coordination Chemistry InstituteDepartment of ChemistryNanjing UniversityNanjing 210093P.R.China State Key Laboratory of Crystal Material Shandong UniversityJinan 250100P.R.China

A quantum mechanical calculation was performed to study the Translation Vibration( T V ) energy transfer of a colinear OH+O/OD+O system, for which Delves coordinates and R matrix propagatation methods were applied to a Mulius Blint potential energy surface. The calculated result of the T V energy transfer probability shows strong oscillation phenomena and the collision delay time of the title system was in the 10 -15 -10 -12 s time scale. The kinetic isotope effect was discussed in this work too.

关键词： V T energy transfer Probability Lifetime Isotope effect

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