维普中文期刊产品整合服务
1350篇 您的检索式:作者名="Reichert"
    题名 作者 年代 出处 被引量
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
2EMT and Dissemination Precede Pancreatic Tumor Formation显示文摘Andrew D. Rhim Emily T. Mirek Nicole M. Aiello Anirban Maitra Jennifer M. Bailey Florencia McAllister Maximilian Reichert Gregory L. Beatty Anil K. Rustgi Robert H. Vonderheide Steven D. Leach Ben Z. Stanger 2012Cell2012,,1:13
3Analysis of the human Atox 1 homologue in Wilson patients显示文摘AIM: To analyze the metallochaperone antioxidant-1 (Atox1) gene sequence in Wilson disease patients. METHODS: Mutation analysis of the four exons of the Atox1 gene including the intron- exon boundaries was performed in 63 Wilson disease patients by direct sequencing. RESULTS: From 63 selected patients no mutations were identified after the entire coding region including the intron- exon boundaries of Atox1 were sequenced. One known polymorphism within the Atox1 gene (5’UTR -99 T>C) in 31 (49%) of the Wilson patients as well as one previously undescribed variation (5’UTR -68 C>T) in 2 of the Wilson patients could be detected. Statistical analyses revealed that the existence of a variation within the Atox1- gene showed a tendency towards an earlier onset of the disease. CONCLUSION: Based on the data of this study, no major role can be attributed to Atox1 in the pathophysiology or clinical variation of Wilson disease.Isabel Simon Mark Schaefer Jürgen Reichert Wolfgang Stremmel 2008World Journal of Gastroenterology2008,14,15:4
4Aquatic exercise program-modulated oxidative stress markers in patients with Parkinson's disease显示文摘Parkinson's disease is a neurodegenerative disease.Oxidative stress,i.e.,the imbalance between the generation of reactive oxygen species and the antioxidant defense capacity of the body,plays an important role in the pathogenesis of this disease.Physical exercise can regulate oxidative stress.The purpose of this study was to analyze the short-and long-term effects of an aquatic exercise program on oxidative stress levels in patients with Parkinson's disease.The aquatic exercise program was carried out during 1 month with two sessions per week(1 hour/session).Blood samples were collected at four different time points:pre-intervention,immediately,48 hours,and 30 days after the first session of aquatic exercise program.Our results revealed that water-based programs modulated antioxidant enzyme activity,increased superoxide dismutase activity,reduced catalase activity,and increased the ratio of superoxide dismutase activity to catalase activity in patients with Parkinson's disease.Compared with pre-intervention and 48 hours after the first session of aquatic exercise program,superoxide dismutase activity was higher and catalase activity was lower immediately and 30 days after the first session.Our results demonstrated that aquatic exercise program could modulate oxidative stress,mainly by the effect of antioxidant enzyme activity.These results could better help understand the target of oxidative stress in Parkinson's disease.This study was approved by the Ethics Committee of Centro Universitário Metodista IPA(approval No.1.373.911)on August 9,2019 and registered with REBEC(registration number:RBR-6 NJ4 MK).Caroline Dani Isabel Teixeira Proenca Jessica Marinho Pamela Peccin Ivy Reichert Vital da Silva Simone Nique Vera Striebel Daniela Pochmann Viviane Rostirola Elsner 2020Neural Regeneration Research2020,15,11:4
5Effects of a phase transition on two-pion interferometry in heavy ion collisions at √SNN=2.4-7.7 GeV显示文摘Hanbury-Brown-Twiss(HBT) correlations for charged pions in central Au+Au collisions at √SNN=2.4-7.7 GeV(corresponding to beam kinetic energies in the fixed target frame from Elab=1.23 to 30 GeV/nucleon) are calculated using the ultra-relativistic quantum molecular dynamics model with different equations of state(EoSs).The effects of a phase transition at high baryon densities are clearly observed in the explored HBT parameters.The results show that the available data on the HBT radii,RO/RSand R^(2)_(O)-R^(2)_(S),in the investigated energy region favor a relatively stiff EoS at low beam energies,which then turns into a soft EoS at high collision energies consistent with astrophysical constraints on the high-density EoS of quantum chromodynamics(QCD).The specific effects of two different phase transition scenarios on RO/RSand R^(2)_(O)-R^(2)_(S)are investigated.A phase transition with a significant softening of the EoS below four times the nuclear saturation density can be excluded using HBT data.Our results highlight that the pion’s RO/RSand R^(2)_(O)-R^(2)_(S)are sensitive to the stiffness of the EoS and can be used to constrain and understand the QCD EoS in a high baryon density region.Pengcheng Li Jan Steinheimer Tom Reichert Apiwit Kittiratpattana Marcus Bleicher Qingfeng Li 2023Science China(Physics,Mechanics & Astronomy)2023,66,3:3
6NONLINEAR INVERSE SIMULATION FOR THE MANEUVERING FLIGHT OF COAXIAL ROTOR HELICOPTERS显示文摘NONLINEARINVERSESIMULATIONFORTHEMANEUVERINGFLIGHTOFCOAXIALROTORHELICOPTERSCaoYihua(InstituteofAircraftDesign,BeijingUniversit...Cao Yihua (Institute of Aircraft Design, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China) G. Reichert (Technical University of Braunschweig, 38106 Braunschweig, Germany) 1997Chinese Journal of Aeronautics1997,10,4:3
7Glial fibrillary acidic protein levels are associated with global histone H4 acetylation after spinal cord injury in rats显示文摘Emerging evidence has suggested global histone H4 acetylation status plays an important role in neural plasticity. For instance, the imbalance of this epigenetic marker has been hypothesized as a key factor for the development and progression of several neurological diseases. Likewise, astrocytic reactivity-a wellknown process that markedly influences the tissue remodeling after a central nervous system injury-is crucial for tissue remodeling after spinal cord injury(SCI). However, the linkage between the above-mentioned mechanisms after SCI remains poorly understood. We sought to investigate the relation between both glial fibrillary acidic protein(GFAP) and S100 calcium-binding protein B(S100B)(astrocytic reactivity classical markers) and global histone H4 acetylation levels. Sixty-one male Wistar rats(aged ~3 months) were divided into the following groups: sham; 6 hours post-SCI; 24 hours post-SCI; 48 hours post-SCI; 72 hours post-SCI; and 7 days post-SCI. The results suggested that GFAP, but not S100B was associated with global histone H4 acetylation levels. Moreover, global histone H4 acetylation levels exhibited a complex pattern after SCI, encompassing at least three clearly defined phases(first phase: no changes in the 6, 24 and 48 hours post-SCI groups; second phase: increased levels in the 72 hours post-SCI group; and a third phase: return to levels similar to control in the 7 days post-SCI group). Overall, these findings suggest global H4 acetylation levels exhibit distinct patterns of expression during the first week post-SCI, which may be associated with GFAP levels in the perilesional tissue. Current data encourage studies using H4 acetylation as a possible biomarker for tissue remodeling after spinal cord injury.Mayara Ferraz de Menezes Fabricio Nicola Ivy Reichert Vital da Silva Adriana Vizuete Viviane Rostirola Eisner Leder Leal Xavier Carlos Alberto Saraiva Goncalves Carlos Alexandre Netto Regis Gemerasca Mestriner 2018Neural Regeneration Research2018,13,11:2
8Pancreatic ductal cells in development, regeneration, and neoplasia显示文摘Reichert Maximilian Rustgi Anil K 2011Journal of Clinical Investigation2011,,12:2
9Stability and structure of activated macrocyclic ligands with biological applications显示文摘Motekaitis R J Rogers B E Reichert D E 1996Inorg Chem1996,35,:2
10Serum levels of follicl-stimulating hormone during the bovine estrous cycle 显示文摘Akbar A M Reichert L E Jr Dunn T G Jr 1974J Anim Sci1974,39,:1
11High response hydraulic servovalve with piezo-actuators in the pilot stage显示文摘Reichert M 2007Oelhydraulik und Pneumatik2007,51,1:1
12Fast analytical assessment of the signal quality in transparent optical networks显示文摘Pachnicke S Reichert J Spalter S 2006Lightwave Technology2006,24,2:1
13Vestibular dysfunction in Parkinson's disease显示文摘Reichert WH Doolittle J Mcdowell FH 1982Neurology1982,32,10:1
14The effect of rock mass confinement on the bond strength of fully grouted cable bolts显示文摘HYETT A J BAWDEN W F REICHERT R D 1992Int J Rock Mech Min Sci Geomech bstr1992,29,:1
15Surface and surface microbial biomass,community structure and metabolic activity as a function of soil depth and season显示文摘Blume E M Bischoff J M Reichert T 2002Applied Soil Ecology2002,20,:1
16Driving Current through Single Organic Molecules 显示文摘Reichert J Ochs R Beckmann D 2002Phys Rev Lett2002,88,17:1
17Linkage and association of the mitochondrial aspartate/glutamate carrier SLC25A12 gene with autism 显示文摘Ramoz N Reichert JG Smith CJ 2004Am J Psychiatry2004,161,4:1
18Plastics and rubber nano- composites based upon layered silicates显示文摘ZILG C REICHERT P DIETSCHE 1998Kunstsoffe Plast Europe1998,88,10:1
19MEMS for geo- physicists显示文摘Tessman J Reichert B March J 2001Expanded Abstracts of 71st Annual In- ternat SEG Mtg2001,2124,:1
20Hospital-acquired meningitis in patients undergoing craniotomy:incidence,evolution,and risk factors显示文摘Reichert MC Medeiros EA Ferraz FA 2002Am J Infect Control2002,30,3:1
返回顶部 每页显示:
共68页 首页 上一页 第1页 下一页 末页 /68 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费