We develop a numerical scheme for solving the one-dimensional(1D)time-dependent Schrödinger equation(TDSE),and use it to study the strong-field photoionization of the atomic hydrogen.The photoelectron energy spec...We develop a numerical scheme for solving the one-dimensional(1D)time-dependent Schrödinger equation(TDSE),and use it to study the strong-field photoionization of the atomic hydrogen.The photoelectron energy spectra obtained for pulses ranging from XUV to near infrared are compared in detail to the spectra calculated with our well-developed code for accurately solving the three-dimensional(3D)TDSE.For XUV pulses,our discussions cover intensities at which the ionization is in the perturbative and nonperturbative regimes.For pulses of 400 nm or longer wavelengths,we distinguish the multiphoton and tunneling regimes.Similarities and discrepancies between the 1D and 3D calculations in each regime are discussed.The observed discrepancies mainly originate from the differences in the transition matrix elements and the energy level structures created in the 1D and 3D calculations.展开更多
BACKGROUND Eosinophilic gastroenteritis(EGE)is a rare disease that presents many unspecific gastroenterological symptoms.The disease includes three types depending on the depth of eosinophil infiltration in the gastro...BACKGROUND Eosinophilic gastroenteritis(EGE)is a rare disease that presents many unspecific gastroenterological symptoms.The disease includes three types depending on the depth of eosinophil infiltration in the gastrointestinal tract.The serosal type is the most rare,presenting as ascites.CASE SUMMARY A 34-year-old man presented with abdominal pain,diarrhea without bloody stool,or nausea.Laboratory test results revealed a peripheral blood eosinophil count(4.85×10^(9)/L),which was remarkedly elevated.Computed tomography scan demonstrated extensive intestinal wall edema thickening in the duodenum,jejunum,ascending colon and transverse colon;multiple exudative effusion surrounding the intestinal tract,and ascites in the abdominal cavity.A series of examinations excluded eosinophil elevation in secondary diseases.Endoscopic multipoint biopsy detected eosinophilic infiltration in the mucous layer of the transverse colon,with≥50 eosinophils/high power field.All symptoms vanished after a few days of steroid therapy and ascites disappeared within 2 wk.CONCLUSION EGE should be considered in patients with abdominal pain,ascites,and eosinophilia.Multiple point biopsies are essential for diagnosis.展开更多
基金Project supported by the National Natural Science Foundation of China(Gant Nos.12074265,11804233,and 11575118)the National Key Research and Development Project of China(Grant No.2017YFF0106500)+1 种基金the Natural Science Foundation of Guangdong,China(Grant Nos.2018A0303130311 and 2021A1515010082)the Shenzhen Fundamental Research Program(Grant Nos.KQJSCX20180328093801773,JCYJ20180305124540632,and JCYJ20190808121405740).
文摘We develop a numerical scheme for solving the one-dimensional(1D)time-dependent Schrödinger equation(TDSE),and use it to study the strong-field photoionization of the atomic hydrogen.The photoelectron energy spectra obtained for pulses ranging from XUV to near infrared are compared in detail to the spectra calculated with our well-developed code for accurately solving the three-dimensional(3D)TDSE.For XUV pulses,our discussions cover intensities at which the ionization is in the perturbative and nonperturbative regimes.For pulses of 400 nm or longer wavelengths,we distinguish the multiphoton and tunneling regimes.Similarities and discrepancies between the 1D and 3D calculations in each regime are discussed.The observed discrepancies mainly originate from the differences in the transition matrix elements and the energy level structures created in the 1D and 3D calculations.
文摘BACKGROUND Eosinophilic gastroenteritis(EGE)is a rare disease that presents many unspecific gastroenterological symptoms.The disease includes three types depending on the depth of eosinophil infiltration in the gastrointestinal tract.The serosal type is the most rare,presenting as ascites.CASE SUMMARY A 34-year-old man presented with abdominal pain,diarrhea without bloody stool,or nausea.Laboratory test results revealed a peripheral blood eosinophil count(4.85×10^(9)/L),which was remarkedly elevated.Computed tomography scan demonstrated extensive intestinal wall edema thickening in the duodenum,jejunum,ascending colon and transverse colon;multiple exudative effusion surrounding the intestinal tract,and ascites in the abdominal cavity.A series of examinations excluded eosinophil elevation in secondary diseases.Endoscopic multipoint biopsy detected eosinophilic infiltration in the mucous layer of the transverse colon,with≥50 eosinophils/high power field.All symptoms vanished after a few days of steroid therapy and ascites disappeared within 2 wk.CONCLUSION EGE should be considered in patients with abdominal pain,ascites,and eosinophilia.Multiple point biopsies are essential for diagnosis.
