IGG4-RELATED autoimmune pancreatitis (AIP) is themost common type of IgG4-related diseases. Theobservation of a diffused and localized enlargementof the pancreas and strictures in the main pancreaticduct on radiologic...IGG4-RELATED autoimmune pancreatitis (AIP) is themost common type of IgG4-related diseases. Theobservation of a diffused and localized enlargementof the pancreas and strictures in the main pancreaticduct on radiological imaging is essential fordiagnosing AIP. The clinical features of AIP which presentas a localized pancreatic mass greatly mimic pancreaticcancer. Cases with AIP mimicking pancreatic cancer arereported numerously. However, cases of IgG4-related AIPmanifesting acute pancreatitis symptoms and extensiveperipancreatic effusion are rarely observed. Meanwhile,acute pancreatitis is a common disease. If misdiagnosed asacute pancreatitis, IgG4-related AIP may progressseriously. Here, we report a rare case of IgG4-related AIPsuspected of acute pancreatitis because of epigastric painand extensive peripancreatic effusion on computed tomography(CT) images.展开更多
In this paper, the fundamental structure of charge and discharge device of V2G is analyzed. As for three phase voltage source PWM converter’s control, this paper presents that the control strategy of direct power con...In this paper, the fundamental structure of charge and discharge device of V2G is analyzed. As for three phase voltage source PWM converter’s control, this paper presents that the control strategy of direct power control PWM rectifier is adopted under charging operation and constant power control strategy is used under discharging operation. For bidirectional DC/DC converter control strategy, dual closed-loop control of external voltage loop and internal current loop is put into use. The whole system of charge and discharge device of V2G is modeled and simulated by using the toolbox of PSCAD/EMTDC. Two-way power energy and information interaction of electric vehicle and power grid has been realized, current harmonic on grid side is decreased, power factor and power quality are improved.展开更多
文摘IGG4-RELATED autoimmune pancreatitis (AIP) is themost common type of IgG4-related diseases. Theobservation of a diffused and localized enlargementof the pancreas and strictures in the main pancreaticduct on radiological imaging is essential fordiagnosing AIP. The clinical features of AIP which presentas a localized pancreatic mass greatly mimic pancreaticcancer. Cases with AIP mimicking pancreatic cancer arereported numerously. However, cases of IgG4-related AIPmanifesting acute pancreatitis symptoms and extensiveperipancreatic effusion are rarely observed. Meanwhile,acute pancreatitis is a common disease. If misdiagnosed asacute pancreatitis, IgG4-related AIP may progressseriously. Here, we report a rare case of IgG4-related AIPsuspected of acute pancreatitis because of epigastric painand extensive peripancreatic effusion on computed tomography(CT) images.
文摘In this paper, the fundamental structure of charge and discharge device of V2G is analyzed. As for three phase voltage source PWM converter’s control, this paper presents that the control strategy of direct power control PWM rectifier is adopted under charging operation and constant power control strategy is used under discharging operation. For bidirectional DC/DC converter control strategy, dual closed-loop control of external voltage loop and internal current loop is put into use. The whole system of charge and discharge device of V2G is modeled and simulated by using the toolbox of PSCAD/EMTDC. Two-way power energy and information interaction of electric vehicle and power grid has been realized, current harmonic on grid side is decreased, power factor and power quality are improved.
