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Chinese Phy.ics C 2024年第4期48卷 6-13页

作者： y.Mahmoud H.Abdallah M.T.Hussein S.Elgammal Centre for theoretical phy.ics The British University in EgyptEgypt Phy.ics Department Faculty of ScienceCairo UniversityEgypt

In this study.we conducted a search for dark matter using a part of the data recorded by.the CMS experiment during run-I of the LHC in 2012 with a center of mass energy.of 8 TeV and an integrated luminosity.of 11.6 fb−*** data were gathered from the CMS open *** matter,in the framework of the simplified model(mono-Z′),can be produced from proton-proton collisions in association with a new hy.othetical gauge boson,Z′.Thus,the search was conducted in the dimuon plus large missing transverse momentum *** benchmark scenario of mono-Z′,which is known as light vector,was used for interpreting the CMS open *** evidence of dark matter was observed,and exclusion limits were set on the masses of dark matter and Z′at 95%confidence level.

关键词： dark matter large hadron collider CMS open data search for new phy.ics dark fermion

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在SEM上进行晶片检测程式优化的新方法

集成电路应用 2008年第5期25卷 30-32页

作者： andrew Stamper Sang Chong Kourosh Nafisi Petra Feichtinger WeeTeck chia David Randall Aneesh Khullar IBM KLA-Tencor Corp

更细的设计规则、更小的缺陷类型、更多的噪声源和新的工艺整合方案，给原本有效的在线晶片检测方法带来了严峻挑战。通过描绘在线检测到的良率限制缺陷的量值以及它们对在线和最终测试良率的影响程度，往往可以获得良率改进最佳方法。... 详细信息

更细的设计规则、更小的缺陷类型、更多的噪声源和新的工艺整合方案，给原本有效的在线晶片检测方法带来了严峻挑战。通过描绘在线检测到的良率限制缺陷的量值以及它们对在线和最终测试良率的影响程度，往往可以获得良率改进最佳方法。特定良率事件的影响程度通常可以决定良率、集成和制程设计团队的工作优先次序。有效的在线缺陷检测不仅可以监控生产线状况、提高良率，还可以防止在制品（WIP）可能发生的缺陷偏移。

关键词：在线检测晶片 SEM 优化程式缺陷类型影响程度设计规则

Multiple ballistic impacts on 2024-T4 aluminum alloy.by.spheres:Experiments and modelling

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Journal of Materials Science & Technology 2021年第35期94卷 164-174页

作者： J.C.Cheng S.P.Zhao D.Fan H.W.Chai S.J.y. C.Li S.N.Luo y.Cai J.y.Huang School of Materials Science and Engineering Southwest Jiaotong UniversityChengduSichuanP.R.China The Peac Institute of Multiscale Sciences ChengduSichuanP.R.China

Multiple ballistic impacts are carried out on a 2024-T4 aluminum alloy.by.spherical steel projectiles(5-mm diameter)at~400 m s^(-1),to investigate its dy.amic deformation and *** ballistic impact process is captured with high-speed *** samples are characterized with optical imaging,three-dimensional laser scanning,microhardness testing and electron backscatter *** increasing number of impacts,crater diameter increases slightly.but crater depth and crater volume increase significantly.and strain accumulation leads to microhardness increase *** parameters all follow power-law relations with the number of ***-like deformation bands and macroscopic deformation twins are produced by.impact as a result of spontaneous dislocation self-pinning under high strain rate,large shear *** multiple impacts,shear strain accumulation in the arc-shaped region of the crater induces deformation twinning when it exceeds a critical value(~1.1-1.6).It is highly.possible that the deformation twins are related to deformation bands,since they.both share one set of the{111}pole with the initial matrix grain.A finite element method model is optimized to reproduce experimental observations and interpret deformation mechanisms.

关键词： 2024Al-T4 alloy Multiple impacts Twin-like deformation band Deformation twinning Finite element method

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计算机图像分析法测量亚麻纤维长度

青岛大学学报（工程技术版） 2001年第1期16卷 33-35页

作者：曲丽君 Zhang y. 青岛大学纺织系中国青岛266071 AgrotechnologicalResearchInstitute

切断长度 9.5mm的生亚麻经过脱胶漂白、梳理工艺之后纤维长度变化很大 ,直接影响与木浆混合造纸无纺布成形的效果。由于纤维长度较短 ,传统的方法难以快速准确测量 ,本文采用计算机图像分析法可较快。

关键词：亚麻纤维纤维长度长度分布无纺布计算机图像分析法长度测量

Goldilocks principle of minimally.invasive surgery.for gastric subepithelial tumors

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World Journal of Gastrointestinal Surgery 2023年第8期15卷 1629-1640页

作者： Wei-Jung Chang Lien-Cheng Tsao Hsu-Heng y.n chia-Wei y.ng Hung-Chi Chang Chew-Teng Kor Szu-chia Wu Kuo-Hua Lin Department of General Surgery Changhua Christian HospitalChanghua 50006TaiwanChina Department of Gastroenterology Changhua Christian HospitalChanghua 50006TaiwanChina General Education Center Chienkuo Technology UniversityChanghua 50006TaiwanChina School of Medicine Chung Shan Medical UniversityTaichung 40201TaiwanChina Big Data Center Changhua Christian HospitalChanghua 50006TaiwanChina Graduate Institute of Statistics and Information Science National Changhua University of EducationChanghua 50007TaiwanChina Transplant Medicine&Surgery.Research Center Changhua Christian HospitalChanghua 50006TaiwanChina

BACKGROUND Minimally.invasive surgery.had been tailored to individual cases of gastric subepithelial tumors(SETs)after comparing the clinical outcomes of endoscopic resection(ER),laparoscopic resection(LR),and hy.rid *** To study.the use of Goldilocks principle to determine the best form of minimally.invasive surgery.for gastric *** In this retrospective study.194 patients of gastric SETs with high probability.of surgical intervention were *** patients underwent tumor resection in the operating theater between January.2013 and December *** patients were divided into two groups,ER or LR,according to the tumor characteristics and the initial intent of *** patients in the ER group required further backup laparoscopic surgery.after an incomplete *** patients who had converted open surgery.were excluded.A logistic regression model was used to assess the associations between patient characteristics and the likelihood of a treatment *** area under the curve was used to assess the discriminative ability.of tumor size and y.uden’s index to determine the optimal cut-off tumor *** One-hundred ninety.four patients(100 in the ER group and 94 in the LR group)underwent tumor resection in the operating *** the ER group,27 patients required backup laparoscopic surgery.after an incomplete *** patients in the ER group had small tumor sizes and shorter procedure durations while the patients in the LR group had large tumor sizes,exophy.ic growth,malignancy.and tumors that were more often located in the middle or lower third of the *** groups had similar durations of hospital stay. and a similar rate of major postoperative *** patients in the ER group who underwent backup surgery.required longer procedures(56.4 min)and prolonged stay.(2 d)compared to the patients in the LR group without the increased rate of major postoperative *** optimal cut-off point for the tumor size for l

关键词： Gastric subepithelial tumors Endoscopic resection Laparoscopic resection Tumor size

The New Pest Scatella tenuicosta Collin （Diptera： Ephy.ridae） for Spirulina Ponds

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Journal of Agricultural Science and Technology 2010年第5期4卷 83-86页

作者： G. Ay.in O. Isik L. Hizarci y. Bulut H. Oguz M. Koksal Atabey.Vocational Scholl Suleyman Demirel University Atabey 32670 Isparta Turkey Aqua Cuy.ture Department Cukurova University Balcali 01330 Adana Turkey

The goal of this study.was to discover Scatella tenuicosta Collin （Diptera： Ephy.ridae） for the first time as a pest on blue-green algae Spirulina platensis. This algae has been recognized as a very.important commercial product in the world today.and as one of the most promising ones among the other microscopic algae due to its richness in poly.nsaturated fatty.acids, as well as in gamma-linolenic acid （GLA）, and in pigments including phy.ocy.nin, my.oxanthophy.l and zeaxanthin. Both immature and adult development stages ofS. tenuicosta have been studied under the temperature of 15±2℃. The development times for eggs, larval stages, including first, second, and third one, and for pupae as well as for adults were found to be 1.4, 1.0, 1.1, 1.1, 3.0 and 8.7 respectively. Some pest control practices ofS. tenuicosta on S. platensis have been also examined in this study.

关键词： Ephy.ridae control blue-green algae Spirulinaplatensis.

Shape-Memory.Intermetallics Development in Taiwan

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Acta Metallurgica Sinica(English Letters) 1995年第Z1期8卷 553-562页

作者： S.K.Wu(Institute of Materials Science and Engineering, National Taiwan University.Taipei, Taiwan 106, China) H.C. Lin(Department of Materials Science, Feng-chia University. Taichung. Taiwan 407. China) National Taiwan Univ Taibei China

In Taiwan, many.groups engage in the development of TiNi SMAs. The two-stage martensitic transformations of and have been clarified for both TiNi binary.and ternary.alloy.. The deformation behaviors have been investigated by.cold-rolling, hot-rolling and wire drawing. Both shape memory.effect and pseudoelasticity.can be improved by.some thermal-mechanical treatments. The damping characteristics of TiNi and TiNiX SMAs have also been sy.tematically.studied. Both B19'/B19 martensite (M)and R-phase(R) have high daming capacities due to the stress-induced movement of twin boundaries. Meanwhile, the addition of third elements-Fe and Cu-can largely.increase the damping ***, some high temperature shape memory.alloy.-TiHiPd and TiNi-.Au alloy.-have also been intensively.studied in Taiwan. All these potential investigations on the TiNi SMAs in Taiwan have attracted much attention and their important characteristics will be applied widely.in the near future.

关键词： TiNi shape memory.alloy.. research and development in Taiwan

Toward qualification of additively.manufactured metal parts:Tensile and fatigue properties of selective laser melted Inconel 718 evaluated using miniature specimens

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Journal of Materials Science & Technology 2022年第2期97卷 239-253页

作者： H.y.Wan W.K.y.ng L.y.Wang Z.J.Zhou C.P.Li G.F.Chen L.M.Lei G.P.Zhang Sheny.ng National Laboratory.for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Materials&Manufacturing Qualification Group Corporate TechnologySiemens Ltd.Beijing 100102China AECC Shanghai Commercial Aircraft Engine Manufacturing Co. LtdShanghai 201306China

Combined with the topology.optimization,additive manufacturing can be used to fabricate metal parts with complex ***,due to the geometrical variations and microstructure heterogeneities of the additively.manufactured metal parts,new standards with the use of miniature specimens are required for the evalutation of the spatial distribution of mechanical properties throughout the ***,we conduct a sy.tematic investigation on tensile and fatigue properties of selective laser melted Inconel718 specimens with different thicknesses ranging from 0.1 mm to 1 mm.A“microstructure unit”that can well reflect the microstructure characteristic of selective laser melted materials is *** results reveal that premature necking with a dramatic drop in uniform elongation occurs if the ratio(t/d)of specimen thickness(t)to the"microstructure unit"size(d)is less than *** necking is mainly.attributed to the transition of strain localization *** also propose a probabilistic statistical model for fatigue limit prediction based on the available fatigue *** is recommended that the criterion of t/d≥4 should be satisfied to ensure that the y.eld strength,the uniform elongation,and the fatigue limit determined by.the miniature specimens are comparable with those determined by.standard *** findings may.provdie a guide to the establishment of miniature specimen-based standards toward the qualification of additively.manufactured metal parts.

关键词： Selective laser melting Inconel 718 Miniature specimen Microstructure unit Thickness effect

Local Orientation Field Based Nonlocal Means Method for Fingerprint Image De-Noising

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Journal of Signal and Information Processing 2013年第3期4卷 150-153页

作者： J. Zou J. B. Feng X. M. Zhang M. y. Ding School of Life Science and Technology Huazhong University of Science and Technology Wuhan China.

The de-noising of the fingerprint image is one of the key.tasks before the extraction of the minutiae in automatic fingerprint matching. When used for de-noising the fingerprint image, the nonlocal means method can not preserve the local minutiae in the fingerprint image very.well. To address this problem, we propose a local orientation field based nonlocal means (NLM-LOF) method in this paper. Experimental results on the simulated and real images show that the proposed method can suppress noise effectively.while preserving edges and details in the fingerprint image and it outperforms the state-of-art nonlocal means method in terms of qualitative metrics and visual comparisons.

关键词： Fingerprint Image Denoising Nonlocal Means Filtering Orientation Field

Overcoming the strength-ductility.trade-off by.tailoring grain-boundary.metastable Si-containing phase in β-ty.e titanium alloy

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Journal of Materials Science & Technology 2021年第9期68卷 112-123页

作者： X.Luo L.H.Liu C.y.ng H.Z Lu H.W.Ma Z.Wang D.D.Li L.C.Zhang y.y.Li National Engineering Research Center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou510640China State Key.Laboratory.of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan430074China Key.Laboratory.of Automobile Materials of MOE Department of Materials ScienceJilin UniversityChangchun130012China School of Engineering Edith Cowan University270Joondalup DriveJoondalupPerthWA 6027Australia

It is well accepted that grain-boundary.phases in metallic alloy. greatly.deteriorate the mechanical *** our work,we report on a novel strategy.to prepare high strength-ductility.β-ty.e(Ti69.71 Nb23.72Zr4.83Ta1.74)97Si3(at.%)(TNZTS) alloy. by.tailoring grain-boundary.metastable Si-containing ***,the thin shell-shaped metastable S1 phase surrounding the columnar β-Ti grain was intercepted successfully.via nonequilibrium rapid solidification achieved by.selective laser melting(SLM).Subsequently.the thin shell-shaped metastable(Ti,Nb,Zr)5 Si3(called S1) phase was transformed into globular(Ti,Nb,Zr)2 Si(called S2) phase by.the solution heat ***,the globular S2 phases reinforced TNZTS alloy.exhibits ultrahigh y.eld strength of 978 MPa,ultimate strength of 1010 MPa and large elongation of 10.4 %,overcoming the strength-ductility.trade-off of TNZTS alloy. by.various ***,the reported y.eld strength herein is 55 % higher than that of conventionally.forged TNZT *** analy.is indicates the globularization process of the metastable S1 phase is controlled by.the model of termination *** quantitative analy.is on strengthening mechanism demonstrates that the increase in y.eld strength of the heat-treated alloy. is mainly.ascribed to the strengthening of the precipitated silicide and the dislocations induced by.high cooling *** obtained results provide some basis guidelines for designing and fabricating β-titanium alloy. with excellent mechanical properties,and pave the way.for biomedical application of TNZTS alloy.by.SLM.

关键词： Selective laser melting βtitanium alloy. Heat treatment