0000000000726778

AUTHOR

Liu C

showing 4 related works from this author

The ARGO-YBJ Experiment Progresses and Future Extension

2010

Gamma ray source detection above 30 TeV is an encouraging approach for finding galactic cosmic ray origins. All sky survey for gamma ray sources using wide field of view detector is essential for population accumulation for various types of sources above 100 GeV. To target the goals, the ARGO-YBJ experiment has been established. Significant progresses have been made in the experiment. A large air shower detector array in an area of 1 km2 is proposed to boost the sensitivity. Hybrid detections with multi-techniques will allow a good discrimination between different types of primary particles, including photons and protons, thus enable an energy spectrum measurement for individual species. F…

PhotonGamma ray source cosmic ray origin detector arraymedia_common.quotation_subjectAstrophysics::High Energy Astrophysical PhenomenaPopulationDetector arrayFOS: Physical sciencesCosmic rayAstrophysicsHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)detector arrayUltra-high-energy cosmic rayeducationMathematical Physicsmedia_commonHigh Energy Astrophysical Phenomena (astro-ph.HE)Physicseducation.field_of_studyDetectorGamma ray sourceAstrophysics::Instrumentation and Methods for AstrophysicsGamma rayAstronomy and Astrophysicscosmic ray originCosmic ray originAir showerSpace and Planetary ScienceSkyAstrophysics - High Energy Astrophysical Phenomena
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Body mass index and complications following major gastrointestinal surgery

2018

Aim Previous studies reported conflicting evidence on the effects of obesity on outcomes after gastrointestinal surgery. The aims of this study were to explore the relationship of obesity with major postoperative complications in an international cohort and to present a meta-analysis of all available prospective data.Methods This prospective, multicentre study included adults undergoing both elective and emergency gastrointestinal resection, reversal of stoma or formation of stoma. The primary end-point was 30-day major complications (Clavien-Dindo Grades III-V). A systematic search was undertaken for studies assessing the relationship between obesity and major complications after gastroint…

MaleobesityMultivariate analysisGastrointestinal DiseasesIMPACTSettore MED/18 - CHIRURGIA GENERALEBody mass index; Body weight; Digestive tract; Gastrointestinal tract; Obesity; Postoperative complications; Gastroenterologydigestive tractTumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14]0302 clinical medicineGastrointestinal tractRisk FactorsMedicineProspective StudiesProspective cohort studyBody mass indexBody mass index; Body weight; Digestive tract; Gastrointestinal tract; Obesity; Postoperative complications; Aged; Europe; Female; Gastrointestinal Diseases; Gastrointestinal Neoplasms; Humans; Male; Middle Aged; Obesity; Postoperative Complications; Prospective Studies; Risk Factors; Body Mass IndexGastrointestinal NeoplasmsOUTCOMESPostoperative complications; body mass index; body weight; digestive tract; gastrointestinal tract; obesityGastroenterologyMiddle AgedBody mass index; Body weight; Digestive tract; Gastrointestinal tract; Obesity; Postoperative complicationsEurope030220 oncology & carcinogenesisMeta-analysisUrological cancers Radboud Institute for Health Sciences [Radboudumc 15]CohortFemale030211 gastroenterology & hepatologyCohort studymedicine.medical_specialtybody mass indexMalignancyNO03 medical and health sciencesPostoperative complicationsbody weightSDG 3 - Good Health and Well-beingHumansDigestive tractObesityAgedbusiness.industrypostoperative complications; obesity; digestive tract; gastrointestinal tract; body mass index; body weightMORTALITYBody weightmedicine.diseaseObesitySettore MED/18SurgeryPostoperative complicationPostoperative Complications Obesity Digestive Tract Gastrointestinal Tract Body Mass Index Body Weight.gastrointestinal tractbusinessBody mass indexColorectal Disease
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Background radioactivity in the scaler mode technique of the Argo-YBJ detector

2011

""ARGO-YBJ is an extensive air shower detector located at the Yangbajing Cosmic Ray Laboratory (4300 ma.s.l., 606 g cm^−2 atmospheric depth, Tibet, China).. It is made by a single layer of Resistive Plate Chambers. (RPCs, total surface ~ 6700 m^2) grouped into 153 units. called “clusters”. The low energy threshold of the experiment is obtained using the ”scaler operation mode”, counting all the particles hitting the detector without reconstruction of the shower size and arrival direction. For each cluster the signals generated by these particles are put in coincidence in a narrow time window (150 ns) and read by four independent. scaler channels, giving the counting rates of channel. >= 1, …

PhysicsResistive touchscreenPhysics and Astronomy (miscellaneous)Atmospheric pressureSettore FIS/01 - Fisica SperimentaleDetectorScaler ModeAstronomy and AstrophysicsCosmic rayRadioactivity Array Detector Scaler ModeArray DetectorCoincidenceComputational physicsRadioactivityAir showerCoincidentArgo
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Gamma ray sources observation with the ARGO-YBJ detector

2011

In this paper we report on the observations of TeV gamma ray sources performed by the air shower de- tector ARGO-YBJ. The objects studied in this work are the blazar Markarian 421 and the extended galactic source MGROJ1908+06, monitored during 2 years of operation. Mrk421 has been detected by ARGO-YBJ with a statisti- cal significance of 11 standard deviations. The observed TeV emission was highly variable, showing large enhance- ments of the flux during active periods. The study of the spectral behaviour during flares revealed a positive correla- tion of the hardness with the flux, as already reported in the past by the Whipple telescope, suggesting that this is a long term property of the…

PhysicsNuclear and High Energy PhysicsGamma AstronomyPhysics and Astronomy (miscellaneous)Astrophysics::High Energy Astrophysical PhenomenaDetectorGamma rayFluxAstronomyExtensive Air ShowerAstronomy and AstrophysicsAstrophysicsGamma-ray astronomyArray DetectorGamma-RayArgo-YbjGamma Astronomy Array DetectorCrab NebulaAir showerPulsarMilagroBlazarInstrumentationArgoNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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