Sökresultat

Filtyp

Din sökning på "chinese" gav 7133 sökträffar

Clinical Characteristics of COVID-19 Patients With Gastrointestinal Symptoms : An Analysis of Seven Patients in China

Objectives: Patients with novel coronavirus disease 2019 (COVID-19) can present with gastrointestinal symptoms as their initial symptoms or as the main manifestations during disease progression, but the clinical characteristics of these patients are still unknown. Methods: We identified COVID-19 patients who admitted to Xiangyang No. 1 People's Hospital and presented with gastrointestinal symptoms

Petrogenesis of Paleo-Mesoproterozoic mafic rocks in the southwestern Yangtze Block of South China : Implications for tectonic evolution and paleogeographic reconstruction

Three episodes of mafic magmatism are identified by zircon and baddeleyite U-Pb dating at 2299 ± 17 Ma, 1703 ± 8 Ma and 1511 ± 14 Ma in the southwestern Yangtze Block. These mafic rocks have tholeiitic compositions with enrichment of LILE but an absence of Nb, Ta, Zr, Hf anomalies, features similar to E-MORB. They have La/Ta (<22) and La/Nb (<1.5) ratios similar to asthenosphere-derived mafic melt