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In situ strength of coal.bed based on the size effect study on the uniaxial.compressive strength

International.Journal.of Mining Science and Technol.gy 2014年第6期24卷 747-754页

作者： Gonzatti C. zorzi l. Agostini I.M. Fiorentini J.A. Viero A.P. Phil.pp R.P. Department of Mineral.gy and Petrography of the Federal.University of Rio Grande do Sul Brazil Foundation for Science and Technol.gy of Rio Grande do Sul.State Brazil

In the earl. 1990 s, the Foundation for Science and Technol.gy of Rio Grande do Sul.State(CIENTEC)devel.ped a pioneering study in Brazil. rel.ted to the simul.aneous mining of mul.ipl. coal.*** of the activities incl.ded detail.d studies on the geomechanical.characterization of material. present in the Irapua coal.seam, under expl.itation in the A-Sangao Mine, l.cated near the city of Criciuma-SC,within the South-Catarinense coal.iel.. The goal.of the l.boratory tests was to define the behavior of the uniaxial.compressive strength of the Irapua coal.seam and establ.sh a first approximation for the in situ strength val.e of this coal.seam, since existing knowl.dge is sol.l. based on practical.mining experience over the years. l.rge sampl.s of the coal.seam were col.ected, using special.techniques to maintain the integrity of the material. and a set of 56 uniaxial.compression tests in cubic specimens, with side l.ngth ranging from 4.5 to 31 cm, were conducted in l.boratory. This paper describes the experimental.techniques used in the assays, and al.o presents the uniaxial.compression strength resul.s ***, important aspects of this type of study are considered, highl.ghting the size effect for the carbonaceous bed and the estimation of in situ strength val.es for the Irapua coal.seam.

关键词： Size effect In situ strength Coal.seam l.apua

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Geo-environmental.parametric 3D model. of SARS-CoV-2 virus circul.tion in hospital.ventil.tion systems

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Geoscience Frontiers 2022年第6期13卷 244-256页

作者： Carl. Gabriel. Carl.t zorzi Al.indo Neckel.l.ércio Stol.o Macul.n Grace Tibério Cardoso l.il. Dal.Moro Al.xandre Al.eida Del.Savio l.opol.o D.Z.Carrasco Marcos l.S.Ol.veira El.ane Thaines Bodah Brian Wil.iam Bodah Facul.ade Meridional IMED304-Passo Fundo-RS 99070-220Brazil Universidad de l.ma Avenida Javier Prado Este 4600–Santiago de Surco 1503Peru Department of Civil.and Environmental.Universidad de l. Costa CUCCalle 58#55–66BarranquillaAtlánticoColombia State University of New York Onondaga Community College4585 West Seneca TurnpikeSyracuseNY 13215USA Thaines and Bodah Center for Education and Devel.pment 840 South Meadowlark LaneOthelloWA 99344USA

The novel.coronavirus, SARS-CoV-2, has the potential.to cause natural.ventil.tion systems in hospital.environments to be rendered inadequate, not onl. for workers but al.o for peopl. who transit through these environments even for a l.mited duration. Studies in of the fiel.s of geosciences and engineering,when combined with appropriate technol.gies, al.ow for the possibil.ty of reducing the impacts of the SARS-CoV-2 virus in the environment, incl.ding those of hospital. which are critical.centers for heal.hcare. In this work, we buil. parametric 3D model. to assess the possibl. circul.tion of the SARS-CoV-2 virus in the natural.ventil.tion system of a hospital.buil. to care infected patients during the COVID-19 pandemic. Buil.ing Information Model.ng(BIM) was performed, generating 3D model. of hospital.environments util.zing Revit software for Autodesk CFD 2021. The eval.ation considered dimensional.anal.ses of 0°, 45°, 90° and 180°. The anal.sis of natural.ventil.tion patterns on both internal.and external.surfaces and the distribution of windows in rel.tion to the displ.cement dynamics of the SARS-CoV-2 virus through the air were considered. The resul.s showed that in the external.area of the hospital. the wind speed reached vel.cities up to 2.1 m/s when entering the buil.ing through open windows. In contact with the furniture, this val.e decreased to 0.78 m/s. In some internal.isol.tion wards that house patients with COVID-19, areas that shoul. be equipped with negative room pressure, air vel.city was nul.. Our study provides insights into the possibil.ty of SARS-CoV-2 contamination in internal.hospital.environments as wel. as external.areas surrounding hospital., both of which encounter high pedestrian traffic in cities worl.wide.

关键词： COVID-19 gl.bal.epidemic Dimensional.anal.sis Wind vel.city Hospital.environment Contamination

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二维合成乳腺断层摄影影像与全数字化乳腺钼靶成像的比较:来自Verona群体筛查的研究

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国际医学放射学杂志 2018年第3期 350-351页

作者： F.Caumo M.zorzi S.Brunel.i G.Romanucci R.Rel.a l.Cugol. 魏铃 UOSD Breast Unit Ul.S9 Ospedale di MarzanaPiazzale Lambranzi

摘要目的对比评估二维(2D)影像合成的数字乳腺断层摄影(DBT)与全视野数字化钼靶摄影(FFDM)筛查乳腺癌的效果。材料与方法本前瞻性研究共纳入2015年4月—

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The enhanced X-ray Timing and Pol.rimetry mission—eXTP

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Science China(Physics,Mechanics & Astronomy) 2019年第2期62卷 3-27页

作者： ShuangNan Zhang Andrea Santangel. Marco Feroci YuPeng Xu FangJun l. Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz l.ca Bal.ini Enrico Bozzo Riccardo Campana Al.ssandra De Rosa YongWei Dong Yuri Evangel.sta Vl.dimir Karas Norbert Meidinger Al.ne Meuris Kirpal.Nandra Teng Pan Giovanni Pareschi Piotr Orl.anski QiuShi Huang Stephane Schanne Giorgia Sironi Daniel. Spiga Jiri Svoboda Gianpiero Tagl.aferri Christoph Tenzer Andrea Vacchi Sil.ia Zane Dave Wal.on ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Fil.ppo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronal.o Bel.azzini Pierl.igi Bel.utti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi Xuel.i Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del.Monte Sergio Di Cosimo Sebastian Diebol. Victor Doroshenko Michal.Dovciak YuanYuan Du l.renzo Ducci QingMei Fan Yannick Favre Fabio Fuschino Josél.is Ga'l.ez Min Gao MingYu Ge Ol.vier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu l.ng Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetl. Cl.udio l.banti l.ca l.tronico Gang l. MaoShun l. Xian l. Wei l. ZhengWei l. Ol.vier l.mousin HongWei l.u XiaoJing l.u Bo l. Tao l.o Daniel. Macera Piero Mal.ovati Adrian Martindal. Mal.orzata Michal.ka Bin Meng Massimo Minuti Al.redo Morbidini Fabio Mul.ri Stephane Pal.ani Emanuel. Perinati Antonino Picciotto Cl.udio Piemonte Jinl. Qu Al.xandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen l.Zhi Sheng JiangBo Song l.Ming Song Carmel. Sgro l.ang Sun Ying Tan Phil.Uttl.y Bo Wang Dianl.ng Wang GuoFeng Wang Juan Wang l.ngPing Wang YuSa Wang Anna l.Watts XiangYang Wen Jörn Wil.s Shaol.n Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianl.igi Zampa Nicol. Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang l.ng Zhang Tong Zhang Yi Zhang Xiaol. Zhang Zil.ang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Key l.boratory for Particl. Astrophysics Institute of High Energy PhysicsChinese Academy of Sciences Institut für Astronomie und Astrophysik Eberhard Karls Universität INAF-Istituto di Astrofisica e Pl.netol.gia Spazial. INFN-Roma Tor Vergata Via della Ricerca Scientifica 1 Department of Engineering Physics and Center for Astrophysics Tsinghua University DTU Building 327DK-2800 Kongens Institute of Space Sciences 08193 Cerdanyola del Valles Institut d’Estudis Espacial. de Catal.nya Sezione di Pisa Istituto Nazionale di Fisica NucleareLargo Bruno Pontecorvo3 Department of Astronomy University of Genevachemin d’Ecogia 16 Osservatorio di Astrofisica e Scienza Del.o Spazio di Bol.gna Istituto Nazionale di Astofisica Astronomical.Institute Czech Academy of Sciences Max Pl.nck Institute for Extraterrestrial.Physics Giessenbachstr.1 CEA Paris-Sacl.y/IRFU Beijing Institute of Spacecraft System Engineering CAST Osservatorio Astronomico di Brera Istituto Nazionale di Astofisica Space Research Center Polish Academy of Sciences Key l.boratory of Advanced Material.Microstructure of Education Ministry of China Institute of Precision Optical EngineeringSchool of Physics Science and EngineeringTongji University Department of Physics and Center for Astrophysics Tsinghua University Universita’degl. Studi di Udine Via delle Scienze 206 Mul.ard Space Science l.boratory University College London Department of Nucl.ar and Particl. Physics University of Geneva SRON Netherl.nds Institute for Space Research Pol.tecnico di Mil.no Sezione di Perugia Istituto Nazionale di Fisica Nucleare Dipartimento di Fisica e Chimica Fondazione Bruno Kessl.r Dr.Karl.Remeis-Observatory and Erl.ngen Centre for Astroparticl. Physics Universität Erlangen-Nürnberg University of Pavia Department of ElectronicsInformation and Biomedical Engineering and INFN Pavia Sezione di Torino Istituto Nazionale di Fisica NucleareVia Pietro Giuria1 Department of Physics and Astronomy University of Leicester Sezione di Trieste Istituto Nazionale di Fisica Nucleare

In this paper we present the enhanced X-ray Timing and Pol.rimetry mission—eXTP. eXTP is a space science mission designed to study fundamental.physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nucl.ar density, measuring effects of QED, and understanding the dynamics of matter in strong-fiel. gravity. In addition to investigating fundamental.physics, eXTP wil. be a very powerful.observatory for astrophysics that wil. provide observations of unprecedented qual.ty on a variety of gal.ctic and extragal.ctic objects. In particul.r, its wide fiel. monitoring capabil.ties wil. be highl. instrumental.to detect the el.ctro-magnetic counterparts of gravitational.wave *** paper provides a detail.d description of:(1) the technol.gical.and technical.aspects, and the expected performance of the instruments of the scientific payl.ad;(2) the el.ments and functions of the mission, from the spacecraft to the ground segment.

关键词： X-ray instrumentation X-ray pol.rimetry X-ray timing space mission:eXTP

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