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1The Qitai radio telescope显示文摘This study presents a general outline of the Qitai radio telescope(QTT)project.Qitai,the site of the telescope,is a county of Xinjiang Uygur Autonomous Region of China,located in the east Tianshan Mountains at an elevation of about 1800 m.The QTT is a fully steerable,Gregorian-type telescope with a standard parabolic main reflector of 110 m diameter.The QTT has adopted an umbrella support,homology-symmetric lightweight design.The main reflector is active so that the deformation caused by gravity can be corrected.The structural design aims to ultimately allow high-sensitivity observations from 150 MHz up to115 GHz.To satisfy the requirements for early scientific goals,the QTTwill be equipped with ultra-wideband receivers and large field-of-view multi-beam receivers.A multi-function signal-processing system based on RFSo C and GPU processor chips will be developed.These will enable the QTT to operate in pulsar,spectral line,continuum and Very Long Baseline Interferometer(VLBI)observing modes.Electromagnetic compatibility(EMC)and radio frequency interference(RFI)control techniques are adopted throughout the system design.The QTT will form a world-class observational platform for the detection of lowfrequency(nano Hertz)gravitational waves through pulsar timing array(PTA)techniques,pulsar surveys,the discovery of binary black-hole systems,and exploring dark matter and the origin of life in the universe.The QTT will also play an important role in improving the Chinese and international VLBI networks,allowing high-sensitivity and high-resolution observations of the nuclei of distant galaxies and gravitational lensing systems.Deep astrometric observations will also contribute to improving the accuracy of the celestial reference frame.Potentially,the QTT will be able to support future space activities such as planetary exploration in the solar system and to contribute to the search for extraterrestrial intelligence.Na Wang Qian Xu Jun Ma Zhiyong Liu Qi Liu Hailong Zhang Xin Pei Maozheng Chen Richard N.Manchester Kejia Lee Xingwu Zheng Hans J.Kärcher Wulin Zhao Hongwei Li Dongwei Li Martin Süss Matthias Reichert Zhongyi Zhu Congsi Wang Mingshuai Li Rui Li Ning Li Guljaina Kazezkhan Wenming Yan Gang Wu Lang Cui Ming Zhang Haitao Li 2023Science China(Physics,Mechanics & Astronomy)2023,66,8:14
2Research on optimal immunization strategies for hepatitis B in different endemic areas in China显示文摘INTRODUCTION At present hepatitis B vaccine immunization is an unique effective measure for controlling hepatitis B.It is important o determine optimal immunizationLi H Wang L Wang SS Gong J Zeng XJ Li RC Nong Y Huang YK Chen XR Huang ZN 2000World Journal of Gastroenterology2000,6,3:9
3TT viral infection through blood transfusion:retrospective investigation on patients in a prospective study of post-transfusion hepatitis显示文摘AIM To investigate the role of bloodtransfusion in TT viral infection(TTV).METHODS We retrospectively studied serumsamples from 192 transfusion recipients whounderwent cardiovascular surgery and bloodtransfusion between July 1991 and June 1992.Allpatients had a follow-up every other week for atleast 6 months after transfusion.Eightyrecipients received blood before screeningdonors for hepatitis C antibody(anti-HCV),and112 recipients received screened blood.Recipients with alanine aminotransferase level>2.5 times the upper normal limit were testedfor serological markers for viral hepatitis A,B,C,G,Epstein-Barr virus and cytomegalovirus.TTV infection was defined by the positivity forserum TTV DNA using the polymerase chainreaction method.RESULTS Eleven and three patients,whoreceived anti-HCV unscreened and screened'blood,respectively,had serum ALT levels>90 IU/L.Five patients(HCV and TTV:1;HCV,HGV,and TTV:1;TTV:2;and CMV and TTV:1)were positive for TTV DNA,and four of them hadsero-conversion of TTV DNA.CONCLUSION TTV can be transmitted viablood transfusion.Two recipients infected byTTV alone may be associated with the hepatitis.However,whether TTV was the causal agentremains unsettled,and further studies arenecessary to define the role of TTV infection inchronic hepatitis.Yang SS Wu CH Chen TH Huang YY Huang CS 2000World Journal of Gastroenterology2000,6,1:8
4Endoscopic hemoclip treatment for bleeding peptic ulcer显示文摘AIM To evaluate the efficacy of endoscopichemoclip in the treatment of bleeding pepticulcer.METHODS Totally,40 patients with F1a andFib hemorrhagic activity of peptic ulcers wereenrolled in this uncontrolled prospective studyfor endoscopic hemoclip treatment.We used anewly developed rotatable clip-device for theapplication of hemoclip(MD850)to stopbleeding.Endoscopy was repeated if there wasany sign or suspicion of rebleeding,and re-clipping was performed if necessary andfeasible.RESULTS Initial hemostatic rate by clippingwas 95%,and rebleeding rate was only 8%.Ultimate hemostatic rates were 87%,96%,and93% in the Fla and Flb subgroups,and totalcases,respectively.In patients with shock onadmission,hemoclipping achieved ultimatehemostasis of 71% and 83% in F1a and F1bsubgroups,respectively.Hemostasis reached100% in patients without shock regardless ofhemorrhagic activity being F1a or F1b.Theaverage number of clips used per case was 3.0(range 2-5).Spurting bleeders required moreclips on average than did oozing bleeders(3.4versus 2.8).We observed no obviouscomplications,no tissue injury,or impairmentof ulcer healing related to hemoclipping.CONCLUSION Endoscopic hemoclip placementis an effective and safe method.With theimprovement of the clip and application device,the procedure has become easier and much moreefficient.Endoscopic hemoclipping deservesfurther study in the treatment of bleeding pepticulcers.Lai YC Yang SS Wu CH Chen TK 2000World Journal of Gastroenterology2000,6,1:6
5Amyloid-beta at sublethal level impairs BDNF-induced arc expression in cortical neurons.显示文摘Wang DC Chen SS Lee YC Chen TJ. 2006中国生物学文摘2006,20,9:4
6Cryptdins: endogenous antibiotic peptides of small intestinal Paneth cells显示文摘Harwig SS Eisenhauer PB Chen NP 1995Adv Exp Med Biol1995,371,:2
7A Novel Technique For Localization of Small Pulmonary 显示文摘chen WS Chen L Yang SS 2007Nodules Chest2007,131,:1
8Estrogen upregulates endothelial nitric oxide synthase gene expression in fetal pulmonary artery, endothelium 显示文摘MacRitchie AN Jun SS Chen Z 1997Circ Res1997,81,3:1
9Imaging of invasiveness of pituitary adenomas 显示文摘 Teng MM Chen SS 2000Kaohsiung J Med Sci2000,16,1:1
10Identification of the human pituitary tumor transforming gene (hPTTG)family:molecular structure,expression,and chromosomal localization显示文摘 Pun R Kakar SS 2000Gene2000,248,1:1
11Porous chitosan microsphere for controlling the antigen release of newcastle disease vaccine preparation of antigen-absorbed microsphere and in vitro release显示文摘Mi FL Shyu SS Chen CT 1999Biomaterials1999,20,17:1
12Expression of p63(TA and △N isoforms)in human primary well differentiated buccal carcinomas显示文摘Chen YK Hsue SS Lin LM 2004Int J Oral Maxillolfacial Surg2004,33,6:1
13Osteogenesis of prefabricated vascularized periosteal graft in rabbits 显示文摘Chen AC Lin SS Chan YS 2009J Trauma2009,67,1:1
14Distribution and Regulation ofthe Mobile Genetic Element-Encoded Phenol-Soluble Modulin PSM-mec in Methicillin-Resistant Staphylococcus aureus显示文摘Chatteijee SS Chen L Joo HS 2011PLoS One2011,6,28:1
15Activation of nuclear factor-kappB and its proinflammatory mediator cascade in the infracted rat heart显示文摘LU L CHEN SS ZHANG JQ 2004Biochem Biophys Res Commun2004,321,4:1
16Identification of the human pituitary tumor transforming gene (hPTTG) family: molecular structure ,expression, and chromosomal location 显示文摘Chen L Puri R Kakar SS 2000Gene2000,248,:1
17Theranostic nanomedicine 显示文摘Chen X Gambhir SS Cheon J 2011Acc Chem Res2011,44,10:1
18Effect of aircraft noise on hearing and auditory pathway function of airport employees显示文摘Chen TJ Ching HC Chen SS 0,,:1
19Gasless laparoscopic aorto- bifemoral bypass grafting using self-designed abdominal lift- ing system显示文摘Wu IH Chen YC Wang SS 2010J Laparoendosc Adv Surg Tech A2010,20,8:1
20Systematic qualitative and quantitative assessment of fatty acids in the seeds of 60 tree peony(Paeonia section Moutan)cultivars by GC-MS显示文摘Li SS Yuan RY Chen LG Wang LS Hao XH Wang LJ Zheng XC Du H 2015Food Chem2015,173,15:1
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