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High strength Al-Cu-Mg based alloy with synchronous improved tensile properties and hot-cracking resistance suitable for laser powder b e d fusion

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Journal of Materials Science & Technology 2023年第10期141卷 155-170页

作者： Q.z.Wang n.Kang X.Lin M.EL Mansori W.D.Huang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Arts et Metiers Institute of Technology MSMPHESAM UniversitéChâlons-en-Champagne F-51006France Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design MIIT ChinaNorthwestern Polytechnical UniversityXi’an 710072China Texas A&M Engineering Experiment Station Institute for Manufacturing SystemsCollege StationTX 77843USA

In present work,a novel crack-free Al-Cu-Mg-Si-Ti alloy with synchronous improved tensile properties and hot-cracking resistance was proposed and successfully manufactured by laser powder bed fusion(LPBF).The microstructure evolution behaviors and the corresponding strengthening mechanisms were investigated in *** LPBF-processed Al-Cu-Mg-Si-Ti alloy presents a heterogeneous microstructure consisting of ultrafine equiaxed grains(UFGs)at the boundary and coarse columnar grains(CGs)at the center of the single molten ***-precipitated D022-Al 3 Ti particles were found to act as the nuclei to refine the grains at the boundary of the molten pool during solidification process,which is attributed to the low cooling rate providing the sufficient incubation time for the precipitation of D022-Al 3 *** are two orientation relationships(ORs)betweenα-Al and D022-Al 3 Ti,i.e.[001]α-Al//[001]D022-Al3Ti,(200)α-Al//(200)D022-Al3Ti and[1¯1¯2]α-Al//[¯111]D022-Al3Ti,(1¯11)α-Al//(¯11¯2)D022-Al3Ti,which are two of the eight ORs predicted with the E2em *** grains in present alloy,no matter for UFGs or CG,exhibited high critical hot-cracking stress,which means a strong hot-cracking ***-nanoprecipitation of Cu-,Mg-,and Si-rich Q’and S’phases was introduced to enhance the mechanical performance ofα-Al *** as-built sample exhibits superior tensile properties,with the yield strength(YS)of 473±8 MPa,ultimate tensile strength(UTS)of 541±2 MPa and elongation(EI)of 10.9%±1.2%.

关键词： Laser powder bed fusion High strength Al-Cu-Mg alloys Duplex microstructure Precipitation Tensile properties

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Pion emission in α-particle interactions with various targets of nuclear emulsion detector

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Chinese Physics C 2015年第9期39卷 35-42页

作者： A.Abdelsalam z.Abou-Moussa n.Rashed B.M.Badawy H.A.Amer W.Osman M.M.El-Ashmawy n.Abdallah Physics Department Faculty of Science Cairo University Mohamed El-nadi High Energy Lab Faculty of Science Cairo University Physics Department Faculty of Science Fayoum University Reactor Physics Department Nuclear Research Center Atomic Energy Authority nuclear and Radiological Regulatory Authority NRRA

The behavior of relativistic hadron multiplicity for 4He-nucleus interactions is investigated. The experi- ment is carried out at 2.1 A and 3.7 A GeV （Dubna energy） to search for the incident energy effect on the interactions inside different emulsion target nuclei. Data are presented in terms of the number of emitted relativistic hadrons in both forward and backward angular z.nes. The dependence on the target siz. is presented. For this purpose the statistical events are discriminated into groups according to the interactions with H, CnO, em, and AgBr target nuclei. The separation of events, into the mentioned groups, is executed based on Glauber＇s multiple scattering theory approach. Features suggestive of a decay mechanism seem to be a characteristic of the backward emission of relativistic hadrons. The results strongly support the assumption that the relativistic hadrons may already be emitted during the de-excitation of the excited target nucleus, in a behavior like that of compound-nucleus disintegration. Regarding the limiting fragmentation hypothesis beyond 1 A GeV, the target siz. is the main parameter affecting the backward production of the relativistic hadron. The incident energy is a principal factor responsible for the forward relativistic hadron production, implying that this system of particle production is a creation system. However, the target siz. is an effective parameter as well as the projectile siz. considering the geometrical concept regarded in the nuclear fireball model. The data are analyz.d in the framework of the FRITIOF model.

关键词： α-particle interactions at Dubna energies shower particle sources target siz. dependence FRITIOFmodel

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Seepage Investigation on an Existing Dam Using Very Low Frequency Electromagnetic (VLF-em) Methods: A Case Study of Shagari Earth Dam, Sokoto, north Western nigeria

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International Journal of Geosciences 2020年第2期11卷 25-36页

作者： U. z. Magawata D. S. Bonde B. U. Abdullahi Basiru Qudus M. n. Yahaya Physics Department Kebbi State University of Science and Technology Aliero Nigeria Department of Science Laboratory Technology The Oke-Ogun Polytechnic Saki Oyo State Nigeria Department of Physics with Electronics Federal University Birnin-Kebbi Birnin Kebbi Nigeria

Very low frequency (VLF-em) was used to assess variations in overburden composition, bedrock lithology and the hidden Sedimentary structures within the foundation of Shagari Dam of the sedimentary basin of northwestern nigeria. Four VLF-electromagnetic (em) traverses were occupied at 10 m in-tervals. The VLF normal and filtered real component irregularities identify major geological interfaces suspected to be faults/fractured z.nes. The points of crossover between the real and imaginary components delineate the fractured z.nes, which were identified as areas of possible seepage (sloughing and piping). The fractured z.nes are suspected to be present at all traverses. In total, 38 fractured z.nes were identified along the dam embankment and canal site, while 17 major fractures occurrence dippers along the Traverses at a point, Traverse 1 (F3, F4, F5, F7, F10, F11), Traverse 2 (F12, F13, F21, F22), Traverse 3 (F23, F24, F29) and Traverse 4 (F32, F33, F34, F38), and coincide with cross over point at 4 traverses. These seepage z.nes cause heterogeneity in the sub-surface structure that could be prime to dam failure which in turn leads to the flooding, decreases in irrigations activities of the peoples leaving around the dam and loss of several hundreds of life when care not taken. The result of the study suggests that VLF is suitable for observing seepages in embankment dams.

关键词： Overburden Interfaces Occurrence Heterogeneity embankment

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改良PAD方案治疗初发多发性骨髓瘤的疗效及安全性

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中国临床医学 2016年第6期23卷 782-784页

作者：邹健孙丽华孟亚红范小红王雪莲复旦大学附属中山医院青浦分院血液科上海201700

目的:探讨不同硼替佐米剂量的PAD方案(硼替佐米+表阿霉素+地塞米松)治疗多发性骨髓瘤(multiple myeloma,MM)的疗效和安全性。方法:回顾性分析PAD方案治疗的32例MM患者的临床资料。其中,硼替佐米1.3mg/m^2静脉注射(d 1、d 4、d 8、d 11)... 详细信息

目的:探讨不同硼替佐米剂量的PAD方案(硼替佐米+表阿霉素+地塞米松)治疗多发性骨髓瘤(multiple myeloma,MM)的疗效和安全性。方法:回顾性分析PAD方案治疗的32例MM患者的临床资料。其中,硼替佐米1.3mg/m^2静脉注射(d 1、d 4、d 8、d 11)+表阿霉素20mg静脉滴注(d 1~4)+地塞米松20mg静脉滴注(d 1~4、d 8~11)治疗20例(PAD 1组);硼替佐米1.6mg/m^2静脉注射(d 1、d 8、d 15)+表阿霉素20mg静脉滴注(d 1、d 8、d 15)+地塞米松20mg静脉滴注(d 1~2、d 8~9、d 15~16)治疗12例(PAD 2组)。两组均以28d为1个疗程,化疗3~6疗程。比较两组MM患者完成3个疗程后的疗效与不良反应。结果:PAD 1组总有效率为80.0%,PAD 2组为83.3%,两组差异无统计学意义。PAD 1组带状疱疹(30.0%vs 0%)患者多于PAD 2组,差异有统计学意义(P<0.05);PAD 1组与PAD 2组胃肠道反应(20.0%vs16.7%)、周围神经炎(25.0%vs 16.7%)、粒细胞减少(15.0%vs 16.0%)、血小板减少(10.0%vs 8.0%)患者差异无统计学意义。结论:硼替佐米1.6mg/m^2每周1次静脉注射的PAD方案治疗与硼替佐米1.3mg/m^2每周2次静脉注射的PAD方案疗效相似,且硼替佐米1.6mg/m^2每周1次静脉注射的PAD方案不良反应更少,更为安全。

关键词：多发性骨髓瘤硼替佐米疗效安全性

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通信天线建模与MATLAB仿真分析

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2006年

作者：（美）马卡洛夫（Makarov S.n.）许献国译

本书介绍了天线的基本概念，采用基于RWG边界元的矩量法对天线和天线阵列进行电磁建模，仿真分析平台使用广为流行的Matlab。不仅讲述了天线的辐射算法，还讲述了天线的散射算法，不仅分析了单个天线的性能，还用大量篇幅分析了天线阵... 详细信息

ISBN: (数字)7563511970

ISBN: (纸本)7563511970

本书介绍了天线的基本概念，采用基于RWG边界元的矩量法对天线和天线阵列进行电磁建模，仿真分析平台使用广为流行的Matlab。不仅讲述了天线的辐射算法，还讲述了天线的散射算法，不仅分析了单个天线的性能，还用大量篇幅分析了天线阵列的有关问题。针对现在流行的超宽带……

关键词：无线电通信天线系统建模通信系统系统仿真软件包MATLAB

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Fungal diversity notes 367-490:taxonomic and phylogenetic contributions to fungal taxa

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Fungal Diversity 2016年第5期80卷 1-270页

作者： Kevin D.Hyde Sinang Hongsanan Rajesh Jeewon D.Jayarama Bhat Eric H.C.McKenz.e E.B.Gareth Jones Rungtiwa Phookamsak Hiran A.Ariyawansa Saranyaphat Boonmee Qi z.ao Faten Awad Abdel-Az.z.Mohamed A.Abdel-Wahab Supharat Banmai Putarak Chomnunti Bao-Kai Cui Dinushani A.Daranagama Kanad Das Monika C.Dayarathne nimali Ide Silva Asha J.Dissanayake Mingkwan Doilom Anusha H.Ekanayaka Tatiana Baptista Gibertoni Aristóteles Góes-neto Shi-Ke Huang Subashini C.Jayasiri Ruvishika S.Jayawardena Sirinapa Konta Hyang Burm Lee Wen-Jing Li Chuan-Gen Lin Jian-Kui Liu Yong-z.ong Lu z.ng-Long Luo Ishara S.Manawasinghe Patinjareveettil Manimohan Ausana Mapook Tuula niskanen Chada norphanphoun Moslem Papiz.deh Rekhani H.Perera Chayanard Phukhamsakda Christian Richter AndréL.C.Mde A.Santiago E.Ricardo Drechsler-Santos Indunil C.Senanayake Kaz.aki Tanaka T.M.D.S.Tennakoon Kasun M.Thambugala Qing Tian Saowaluck Tibpromma Benjarong Thongbai Alfredo Viz.ini Dhanushka n.Wanasinghe nalin n.Wijayawardene Hai-Xia Wu Jing Yang Xiang-Yu z.ng Huang z.ang Jin-Feng z.ang Timur S.Bulgakov Erio Camporesi Ali H.Bahkali Mohammad A.Amooz.gar Lidia Silva Araujo-neta Joseph F.Ammirati Abhishek Baghela R.P.Bhatt Dimitar Bojantchev Bart Buyck Gladstone Alves da Silva Catarina Letícia Ferreira de Lima Rafael JoséVilela de Oliveira Carlos Alberto Fragoso de Souz. Yu-Cheng Dai Bálint Dima Tham Thi Duong Enrico Ercole Fernando Mafalda-Freire Aniket Ghosh Akira Hashimoto Sutakorn Kamolhan Ji-Chuan Kang Samantha C.Karunarathna Paul M.Kirk Ilkka Kytovuori Angela Lantieri Kare Liimatainen z.o-Yi Liu Xing-z.ong Liu Robert Lücking Gianfranco Medardi Peter E.Mortimer Thi Thuong Thuong nguyen Itthayakorn Promputtha K.n.Anil Raj Mateus A.Reck Saisamorn Lumyong Seyed Abolhassan Shahz.deh-Faz.li Marc Stadler Mohammad Rez. Soudi Hong-Yan Su Takumasa Takahashi narumon Tangthirasunun Priyanka Uniyal Yong Wang Ting-Chi Wen Jian-Chu Xu z.ong-Kai z.ang Yong-Chang z.ao Jun-Liang z.ou Lin z.u Institute of Biotechnology and Germplasm Resources Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation Ministry of AgricultureYunnan Provincial Key Laboratory of Agricultural BiotechnologyYunnan Academy of Agricultural SciencesKunming 650223YunnanPeople’s Republic of China Key Laboratory of Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPeople’s Republic of China Center of Excellence in Fungal Research Mae Fah Luang University333 M.1T.ThasudMuangChiang Rai 57100Thailand State Key Laboratory of Mycology Institute of MicrobiologyChinese Academy of SciencesNo 31st West Beichen RoadChaoyang DistrictBeijing 100101People’s Republic of China Department of Botany and Microbiology College of ScienceKing Saud UniversityP.O.Box:2455Riyadh1145Saudi Arabia Department of Botany and Microbiology Faculty of ScienceSohag UniversitySohag 82524Egypt Faculty of Agriculture and Life Sciences Hirosaki University3 Bunkyo-choHirosakiAomori 036-8561Japan The United Graduate School of Agricultural Sciences Iwate University18-8 Ueda 3 ChomeMorioka 020-8550Japan Guiz.ou Key Laboratory of Agricultural Biotechnology Guizhou Academy of Agricultural SciencesXiaohe DistrictGuiyang CityGuizhou Province 550006People’s Republic of China School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Plant Pathology College of AgricultureGuizhou UniversityGuiyang 550025GuizhouPeople’s Republic of China Department of Botany Goa UniversityTaleigãoGoaIndia no.128/1-J Azad Housing SocietyCurcaGoa Velha 403108India Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Centre of Mountain Ecosystem Studies Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPeople’s Republic of China Department of Microbial Drugs Helmholtz Centre for Infection Res

This is a continuity of a series of taxonomic papers where materials are examined,described and novel combinations are proposed where necessary to improve our traditional species concepts and provide updates on their *** addition to extensive morphological descriptions and appropriate asexual and sexual connections,DnA sequence data are also analysed from concatenated datasets(rDnA,TEF-a,RBP2 and b-Tubulin)to infer phylogenetic relationships and substantiate systematic position of taxa within appropriate *** new species or combinations are being proposed,we apply an integrative approach(morphological and molecular data as well as ecological features wherever applicable).notes on 125 fungal taxa are compiled in this paper,including eight new genera,101 new species,two new combinations,one neotype,four reference specimens,new host or distribution records for eight species and one alternative *** new genera introduced in this paper are Alloarthopyrenia,Arundellina,Camarosporioides,neomassaria,neomassarina,neotruncatella,Paracapsulospora and *** new species are Alfaria spartii,Alloarthopyrenia italica,Anthostomella ravenna,***,Arthrinium paraphaeospermum,Arundellina typhae,Aspergillus koreanus,Asterina cynometrae,Bertiella ellipsoidea,Blastophorum aquaticum,Cainia globosa,Camarosporioides phragmitis,Ceramothyrium menglunense,Chaetosphaeronema achilleae,Chlamydotubeufia helicospora,Ciliochorella phanericola,Clavulinopsis aurantiaca,Colletotrichum insertae,Comoclathris italica,Coronophora myricoides,Cortinarius fulvescentoideus,***,***,***,Cunninghamella gigacellularis,Cyathus pyristriatus,Cytospora cotini,Dematiopleospora alliariae,***,Diaporthe aseana,***,Distoseptispora multiseptata,***,***,Dothiora buxi,emericellopsis persica,Gloniopsis calami,Helicoma guttulatum,Helvella floriforma,***,Hermatomyces subiculosa,Ju

关键词： Ascomycota Basidiomycota Dothideomycetes Mortierellomycotina Mucoromycotina Pez.z.mycetes Phylogeny Taxonomy new genus new species new host records

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