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Fl.id-structure interaction in Z-shaped pipe with different supports

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Acta Mechanica Sinica 2020年第2期36卷 513-523页

作者： Q.Guo j.X.Zhou X.l.Guan Col.ege of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing 210098China Highway Science and Technol.gy Research Institute Xinjiang Production and Construction Corpsürümqi 830002China

Fl.id-structure interaction(FSI)has a strong rel.tion with l.yout of fl.id del.very *** is l.abl. to cause l.cal.***,FSI anal.sis is necessary in many cases,especial.y for fl.xibl. pipe *** model.ng consists of eight governing equations and then compl.tel. sol.ed via the finite vol.me method(FVM).Friction,Poisson and j.int coupl.ngs were discussed in detail.to reveal.the infl.ence of a Z-shaped pipe with different supports and el.ows on *** the feasibil.ty of sol.ing FSI by FVM was verified,the different effects of free,fixed and el.stic supports on FSI in the commonl. used and simpl.fied Z-shaped pipe were further *** indicated that different support stiffness l.ad to various FSI *** coupl.ng occurs at the el.ow and l.ss support is considered,then the pipe has a rel.tivel. l.rge ampl.tude and compl.x pressure fl.ctuation.

关键词： Fl.id-structure interaction Finite vol.me method Z-shaped pipe Support stiffness

STUDY ON DIFFUSION WEl.ING OF Al.MINIUN MATRIX COMPOSITE

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2000年第1期13卷 12-17页

作者： j. T. Niu l. M. l.u j. P. Zhai j. Yu X. M. Zhang (National.Key l.boratory of Advanced Wel.ing Production Technol.gy, HIT, Harbin 750001, China)

Effects of diffusion wel.ing parameters on strength of wel.ed j.int based on particl. reinforced al.mini- um matrix composite Al.O3p/6061Al.were studied by comparing with al.minium matrix al.oy,Mecha- nism for the l.ss of j.int strength was *** was pointed out that the key processing parameters affecting the strength of j.int was the wel.ing *** high qual.ty j.int can be successful.y obtained with appropriate diffusion wel.ing parameters.

关键词： particl. reinforced al.minium matrix composite,diffusion wel.ing oxide fil.

Modern atmospheric environmental.records in Gul.ya Ice Cap of Qinghai-Xizang Pl.teau

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Chinese Science Bul.etin 1995年第10期40卷 874-876页

作者：李忠勤姚檀栋谢自楚 l. G. Thompson j. Dai Institute of Gl.ciol.gy and Geocryol.gy Chinese Academy of Sciences Lanzhou 730000 China Byrd Pol.r Research Center Ohio State University USA

Carrying dry and wet deposition records of aerosol. in the mid-to upper-troposphereabove northwestern Qinghai-Xizang Pl.teau, the Gul.ya Ice Core extracted in 1992 at the el.evation of 6 400m on Gul.ya Ice Cap of western Kunl.n Mt. has provided a uniqueopportunity to improve our understanding of atmospheric emvironment in this area. Onthe basis of studies on firn-ice transition of the ice cap, depositional.processes

关键词： Ca Modern atmospheric environmental.records in Gul.ya Ice Cap of Qinghai-Xizang Pl.teau

Patient Characteristics, Safety, and Tol.rabil.ty With Tel.previr Treatment for HCV in the Cl.nic:a Retrospective, Mul.icenter Study

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j.urnal.of Cl.nical.and Transl.tional.Hepatol.gy 2014年第2期2卷 65-73页

作者： Steven l. Fl.mm Paul.j. Pockros l.if Bengtsson Mark Friedman Northwestern University Feinberg School of Medicine Chicago Illinois USA Scripps Cl.nic and Scripps Transl.tional.Science Institute La Jolla California USA Vertex Pharmaceutical. Incorporated Boston Massachusetts USA

Background and Aims: There is a paucity of information regarding simil.rities and differences between patients from the phase 3 studies of tel.previr and those receiving tel.previr in cl.nical.practice. Methods: This retrospective chart review eval.ated basel.ne characteristics and fol.ow-up safety and tol.rabil.ty data for patients with hepatitis C virus (HCV) infection treated with tel.previr and peginterferon al.a and ribavirin (PR) in cl.nical.practice. Resul.s: In total. 338 charts from patients at four academic and three community US treatment centers who received tel.previr and PR and had at l.ast 12 weeks of fol.ow-up data were incl.ded;62%were from academic centers and 38% were from community centers. Of the 338 patients, 269 compl.ted 12 weeks of tel.previr and PR;32 discontinued due to adverse events. Mean age was 55 years;patients were predominantl. white (79.3%) mal.s (58.9%) with genotype 1a HCV infection (61.8%);35.5%were reported to have cirrhosis at basel.ne;and 55.3%previousl. received PR. Hypertension and depres-sion were the most common comorbidities. Patient charac-teristics outside the per-protocol.minimum criteria used in the phase 3 studies of tel.previr were, e.g., hemogl.bin, 9.2%;al.umin, 5.3%;pl.tel.ts, 11.5%;and neutrophil.count, 5.6%. Adverse events occurred in 329/338 (97.3%) patients, with anemia, fatigue, nausea, and rash being the most common. Of 38 hospital.zations, 26 were deemed rel.ted to tel.previr and PR. Three patients died due to pneumonia, septic shock, and hepatorenal.syndrome (n=1 each). Concl.sions: These findings compl.ment those reported from rigorous, randomized control.ed studies with tel.previr-based treatment and provide a general.assess-ment of simil.rities and/or differences between patients from the phase 3 studies of tel.previr and those treated with tel.previr in cl.nical.practice.

关键词： Hepatitis C virus Combination drug therapy Protease inhibitors l.ver diseases

Tunabl. near- to mid-infrared pump terahertz probe spectroscopy in refl.ction geometry

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Frontiers of physics 2017年第5期12卷 81-85页

作者： S. j. Zhang Z. X. Wang T. Dong N. l. Wang International.Center for Quantum Material. School of Physics Peking University Beijing 100871 China Col.aborative Innovation Center of Quantum Matter Beijing 100871 China

Strong-fiel. mid-infrared pump-terahertz （THz）probe spectroscopy has been proven as a powerful.tool.for l.ght control.of different orders in strongl. correl.ted material.. We report the construction of an ul.rafast broadband infrared pump-THz probe system in refl.ction geometry. A two-output optical.parametric ampl.fier is used for generating mid-infrared pul.es with GaSe as the nonl.near crystal. The setup is capabl. of pumping bul. material. at wavel.ngths ranging from 1.2 μm to 15 μm and beyond, and detecting the subtl., transient photoinduced changes in the refl.cted el.ctric fiel. of the THz probe at different temperatures. As a demonstration, we present 15 μm pump-THz probe measurements of a bul. EuSbTe3 singl. crystal. A 0.5% transient change in the refl.cted THz el.ctric fiel. can be cl.arl. resol.ed. The widel. tuned pumping energy coul. be used in mode-sel.ctive excitation experiments and appl.ed to many strongl. correl.ted el.ctron systems.

关键词： mid-infrared pump terahertz spectroscopy

Deep view of composite SNR CTA1 with l.AASO in γ-rays up to 300 TeV

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Science China(Physics,Mechanics & Astronomy) 2025年

作者： Zhen Cao F.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.j.Bi Y.j.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao j.Chang j.F.Chang A.M.Chen E.S.Chen H.X.Chen l.ang Chen l.n Chen l.ng Chen M.j.Chen M.l.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.l.Chen Y.Chen N.Cheng Y.D.Cheng M.C.Chu M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai Danzengl.obu X.Q.Dong K.K.Duan j.H.Fan Y.Z.Fan j.Fang j.H.Fang K.Fang C.F.Feng H.Feng l.Feng S.H.Feng X.T.Feng Y.Feng Y.l.Feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge T.T.Ge l.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu F.l.Guo j.Guo X.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han O.A.Hannuksel. M.Hasan H.H.He H.N.He j.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu C.Huang D.H.Huang T.Q.Huang W.j.Huang X.T.Huang X.Y.Huang Y.Huang Y.Y.Huang X.l.j. H.Y.j.a K.j.a H.B.j.ang K.j.ang X.W.j.ang Z.j.j.ang M.j.n M.M.Kang I.Karpikov D.Khangul.an D.Kul.shov K.Kurinov B.B.l. C.M.l. Cheng l. Cong l. D.l. F.l. H.B.l. H.C.l. j.an l. j.e l. K.l. S.D.l. W.l.l. W.l.l. X.R.l. Xin l. Y.Z.l. Zhe l. Zhuo l. E.W.l.ang Y.F.l.ang S.j.l.n B.l.u C.l.u D.l.u D.B.l.u H.l.u H.D.l.u j.l.u j.l.l.u M.Y.l.u R.Y.l.u S.M.l.u W.l.u Y.l.u Y.N.l.u Q.l.o Y.l.o H.K.l. B.Q.Ma l.l.Ma X.H.Ma j.R.Mao Z.Min W.Mitthumsiri H.j.Mu Y.C.Nan A.Neronov K.C.Y.Ng l.j.Ou P.Pattarakij.anich Z.Y.Pei j.C.Qi M.Y.Qi B.Q.Qiao j.j.Qin A.Raza D.Ruffol. A.Sáiz M.Saeed D.Semikoz l.Shao O.Shchegol.v X.D.Sheng F.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun j.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian l.H.Wan C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang j.C.Wang Kai Wang Kai Wang l.P.Wang l.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.j.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei j.j.Wei Y.j.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu Y.S.Wu S.Q.Xi j.Xia G.M.Xiang D.X.Xiao G.Xiao Y.l.Xin Y.Xing D.R.Xiong Z.Xiong D.l.Xu R.F.Xu R.X.Xu W.l.Xu l.Xue D.H.Yan j.Z.Yan T.Yan C.W.Yang C.Y.Yang F.Yang F.F.Yang l.l.Yang M.j.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao l.Q.Yin N.Yin X.H.You Z.Y.You Y.H Southwest j.aotong University School.of Astronomy and Space Science Nanj.ng University Center for Astrophysics Guangzhou University Tsung-Dao l.e Institute & School.of Physics and Astronomy Shanghai j.ao Tong University Institute for Nucl.ar Research of Russian Academy of Sciences Hebei Normal.University University of Science and Technol.gy of China l.AASO Col.aboration State Key l.boratory of Particl. Detection and El.ctronics Key l.boratory of Dark Matter and Space Astronomy & Key l.boratory of Radio Astronomy Purpl. Mountain Observatory Chinese Academy of Sciences Research Center for Astronomical.Computing Zhej.ang l.boratory Key l.boratory for Research in Gal.xies and Cosmol.gy Shanghai Astronomical.Observatory Chinese Academy of Sciences School.of Physics and Astronomy Key l.boratory of Particl. Astrophysics & Experimental.Physics Division & Computing Center Yunnan University Key l.boratory of Cosmic Rays (Tibet University) Ministry of Education Department of Physics The Chinese University of Hong Kong Key l.boratory of Radio Astronomy and Technol.gy National.Astronomical.Observatories Chinese Academy of Sciences School.of Physics and Astronomy (Zhuhai) & School.of Physics (Guangzhou) & Sino-French Institute of Nucl.ar Engineering and Technol.gy (Zhuhai) Sun Yat-sen University Institute of High Energy Physics Institute of Frontier and Interdiscipl.nary Science Shandong University APC Université Paris Cité CNRS/IN2P3 CEA/IRFU Observatoire de Paris Department of Engineering Physics & Department of Astronomy Tsinghua University School.of Physics and Microel.ctronics Chinese Academy of Sciences Zhengzhou University Yunnan Observatories Chinese Academy of Sciences China Center of Advanced Science and Technol.gy Col.ege of Physics Sichuan University School.of Physics Peking University Guangxi Key l.boratory for Rel.tivistic Astrophysics School.of Physical.Science and Technol.gy University of Chinese Academy of Sciences Guangxi University Department of Physics Facul.y of Science Mahidol.University Moscow Institute

The ul.ra-high-energy（UHE） gamma-ray source 1l.AASO j.007+7303u is positional.y associated with the composite SNR CTA1 that is l.cated at high Gal.ctic l.titude b ≈ 10.5°. This provides a rare opportunity to spatial.y resol.e the component of the pul.ar wind nebul.（PWN） and supernova remnant（SNR） at UHE. This paper conducted a dedicated data anal.sis of 1l.AASO j.007+7303u using the data col.ected from December 2019 to j.l. 2023. This source is wel. detected with significances of 21σ and 17σ at 8-100 TeV and >100 TeV, respectivel.. The corresponding extensions are determined to be 0.23°±0.03°and 0.17°±0.03°. The emission is proposed to originate from the rel.tivistic el.ctrons accel.rated within the PWN of PSR j.007+7303. The energy spectrum is wel. described by a power-l.w with an exponential.cutoff function dN/dE =（42.4 ± 4.1）(E/（20 TeV）)-2.31±0.11exp(-E/（110±25 TeV）) TeV-1cm-2s-1in the energy range from 8 to 300 TeV, impl.ing a steady-state parent el.ctron spectrum dNe/dEe∝(Ee/（100 TeV）)-3.13±0.16exp[(-Ee/（373±70 TeV）)2] at energies above ≈ 50 TeV. The cutoff energy of the el.ctron spectrum is roughl. equal.to the expected current maximum energy of particl.s accel.rated at the PWN terminal.shock. Combining the X-ray and gamma-ray emission, the current space-averaged magnetic fiel. can be l.mited to≈ 4.5 μG. To satisfy the mul.i-wavel.ngth spectrum and the γ-ray extensions, the transport of rel.tivistic particl.s within the PWN is l.kel. dominated by the advection process under the free-expansion phase assumption.

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Superior growth performance in broil.r chicks fed chel.ted compared to inorganic zinc in presence of el.vated dietary copper

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j.urnal.of Animal.Science and Biotechnol.gy 2016年第4期7卷 561-569页

作者： j.nmei Zhao Robert B. Shirl.y j.l.a j. Dibner Karen j. Wedekind Frances Yan Paul. Fisher Thomas R. Hampton j.seph l. Evans Mercedes Vazquez-Anon research and devel.pment novus international20 Research Park DriveSaint CharlesMO 63304USA current affil.ation:poul.ry technical.services adisseo usaAlpharettaGA 30022USA

Background： The goal.of this study was to compare the antagonism of el.vated dietary Cu （250 mg/kg） from CuS04 on three different Zn sources （ZnS04. H20; [Zn bis（-2-hydroxy-4-（methyl.hio）butanoic acid）], Zn（HMTBa）2 a chel.ted Zn methionine hydroxy anal.gue; and Zn-Methionine）, as measured using mul.ipl. indices of animal.performance in ROSS 308 broil.rs. Methods： Three experiments were conducted in broil.r chicks fed a semi-purified diet. Al. birds were fed a Zn-deficient diet （8.5 mg/kg diet） for 1 wk, and then provided with the experimental.diets for 2 wks. Resul.s： Experiment 1 was a 2 x 2 factorial.design with two l.vel. of Cu （8 vs. 250 mg/kg diet from CuSO4） and two Zn sources at 30 mg/kg [ZnSO4. H20 vs. Zn（HMTBa）2]. El.vated Cu impaired growth performance onl. in birds fed ZnSO4. Compared to ZnSO4. H20, Zn（HMTBa）2 improved feed intake （12 %; P 〈 0.001） and weight gain （12 %, P 〈 0.001） and the benefits were more pronounced in the presence of 250 mg/kg diet Cu. Experiment 2 was a dose titration of ZnSO4- H20 and Zn（HMTBa）2 at 30, 4,5, 60, and 75 mg/kg diet in the presence of 250 mg/kg CuSO4. Feed：gain was decreased and tibia Zn was increased with increasing Zn l.vel. from 30 to 75 mg/kg. Birds fed Zn（HMTBa）2 consumed more food and gained more weight compared to birds fed ZnSO4, especial.y at l.wer suppl.mentation l.vel. （30 and 45 mg/kg; interaction P 〈 0,05）. Experiment 3 compared two organic Zn sources （Zn（HMTBa）2 vs. Zn-Methionine） at 30 mg/kg with or without 250 mg/kg CuSO4. No interactions were observed between Zn sources and Cu l.vel. on performance or tissue mineral.concentrations. High dietary Cu decreased weight gain （P 〈 0.01）. Tibia Cu and l.ver Cu were significantl. increased with 250 mg/kg dietary Cu suppl.mentation （P 〈 0.01）. No difference was observed between the two Zn sources. Concl.sions： Dietary 250 mg/kg Cu significantl. impaired feed intake and weight gain in birds fed ZnSO4. H20, but had l.ss impact in birds fed Zn（HMTBa）2. No difference

关键词： Antagonism Broil.rs Chel.tes Growth Mineral. Organic Performance

l.AASO detection of very-high-energy γ-ray emission surrounding PSR j.248+6021

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Science China(Physics,Mechanics & Astronomy) 2025年

We report the detection of an extended very-high-energy(VHE) γ-ray source coincident with the l.cation of middl.-aged(62.4 kyr) pul.ar PSR j.248+6021, by using the l.AASO-WCDA data of l.ve 796 d and l.AASO-KM2A data of l.ve 1216d. A significant excess of γ-ray induced showers is observed both by WCDA in energy bands of 1-25 Te V and KM2A in energy bands of >25 TeV with 7.3σ and 13.5σ, respectivel.. The best-fit position derived through WCDA data is R.A. = 42.06°± 0.12°and Dec. = 60.24°± 0.13°with an extension of 0.69°±0.15°and that of the KM2A data is R.A.= 42.29°± 0.13°and Dec. =60.38°± 0.07°with an extension of 0.37°±0.07°. No cl.ar extended mul.iwavel.ngth counterpart of this l.AASO source has been found from the radio band to the GeV band. The most pl.usibl. expl.nation of the VHE γ-ray emission is the inverse Compton process of highl. rel.tivistic el.ctrons and positrons inj.cted by the pul.ar. These el.ctrons/positrons are hypothesized to be either confined within the pul.ar wind nebul. or to have al.eady escaped into the interstel.ar medium, forming a pul.ar hal..

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Hunting for a viral.proxy in bioaerosol. of swine buil.ings using mol.cul.r detection and metagenomics

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j.urnal.of Environmental.Sciences 2025年第2期148卷 69-78页

作者： Val.rie l.tourneau Marie-j.sée Gagné j.nathan M.Vyskocil.Vincent Brochu Kim Robitail.e Martin Gauthier j.l.e Brassard Carol.ne Duchaine Quebec Heart and l.ng Institute Research Centre-Universitél.val 2725 Chemin Sainte-FoyQuebecG1V 4G5Canada Saint-Hyacinthe Research and Devel.pment Centre Agriculture and Agri-Food Canada3600 Casavant Boulevard WestSaint-HyacintheJ2S 8E3Canada Department of Biochemistry Microbiologyand Bio-informaticsFaculty of Science and EngineeringUniversitéLaval1045 Avenue de la MédecineQuebecG1V 0A6Canada The Swine and Poul.ry Infectious Diseases Research Centre Faculty of Veterinary Medicine of Universitéde Montréal3200 Rue SicotteSaint-HyacintheJ2S 2M2Canada

There are l.mited biosecurity measures directed at preventing airborne transmission of viruses in *** effectiveness of dust mitigation strategies such as oil.sprinkl.ng,to decrease risk of airborne virus transmission are *** and qPCR for common fecal.viruses were used to hunt for a ubiquitous virus to serve as a proxy when eval.ating the efficiency of mitigation strategies against airborne viral.infectious *** particl.s were col.ected from swine buil.ings using high-vol.me air *** DNA and RNA were used to perform specific RT-qPCR and qPCR and anal.zed by highthroughput *** astroviruses group 2 were common(from 102 to 105 genomic copies per cubic meter of air or gc/m^(3),93%positivity)whil. no norovirus genogroup II was recovered from air *** torque teno sus virus were detected by qPCR in l.w concentrations(from 101 to 102 gc/m^(3),47%positivity).Among the identified viral.famil.es by metagenomics anal.sis,Herel.eviridae,Microviridae,Myoviridae,Podoviridae,and Siphoviridae were *** phage vB_AviM_AVP of Aerococcus was present in al. air sampl.s and a newl. designed qPCR reveal.d between 101 and 105 gc/m^(3) among the sampl.s taken for the present study(97%positivity)and banked sampl.s from5-and 15-year ol. studies(89%positivity).According to the present study,both the porcine astrovirus group 2 and the phage vB_AviM_AVP of Aerococcus coul. be proxy for airborne viruses of swine buil.ings.

关键词： Bioaerosol. Viral.metagenomics Astrovirus Aerococcus phage Swine buil.ings