This study aimed to determine the clinical characteristics of patients diagnosed with the coronavirus disease 2019(COVID-19).Clinical data of COVID-19 patients diagnosed between January 28,2020 and February 23,2020 at...This study aimed to determine the clinical characteristics of patients diagnosed with the coronavirus disease 2019(COVID-19).Clinical data of COVID-19 patients diagnosed between January 28,2020 and February 23,2020 at the Beijing You'an Hospital were summarized and analyzed.Overall,45(18 men and 27 women)patients were included in this study.The average age of patients was 58 years(range,7–94 years).Furthermore,21 patients(47%)experienced underlying chronic diseases,with another four patients(9%)having three or more chronic diseases simultaneously.The first symptoms appeared at the onset of illness onset include fever in 36 patients(80%),cough in 23 patients(51%),and expectoration in 15 patients(33%),respectively.Patientsmay experience hepatic and renal injury as well as abnormal myocardial enzymes in varying degrees.Senior patients(≥58)and accompanying chronic diseases were considered as independent predictors for developing a severe and critically ill population with increased mortality.Laboratory results regarding the NEU percentage,NLR,ALC,and C-reactive protein levels were considered significant in predicting clinically critical disease or for prognosis assessment and thus require further studies.COVID-19 may affect multiple organs of the human body.Glucocorticoid is considered effective in the treatment of patients diagnosed with severe COVID-19.展开更多
Iron sulfides have bee n con sidered as one of the most promising can didates for sodium ion battery anode materials due to their high theoretical capacity and low cost. I n this work, spin dle-like Fe7S8 with n itrog...Iron sulfides have bee n con sidered as one of the most promising can didates for sodium ion battery anode materials due to their high theoretical capacity and low cost. I n this work, spin dle-like Fe7S8 with n itroge rvdoped carb on (FeiS/N-C) nano hybrids are successfully syn thesized via a solvothermal method by sulfidation iron-based metal organic framework (FeMOF). As sodium ion battery an odes, FeySs/N-C nano hybrids exhibit high reversible capacity of 450.8 mAh g-1 at 200 mA·g^-1, and 406.7 mAh·g^-1 at 500 mA·g^-1 even after 500 cycles. They also show excellent rate properties and delivering the capacity of 327.8 mAh·g^-1 at a very high current density of 3.2 A·g^-1. These outstanding electrochemical performa nces can be attributed to the unique structure of Fe7S8/ N-C nan ohybrids. The nano scale dime nsion in their size can be ben eficial for facile ion and electro n tran sports. Furthermore, the stable n itroge n doped carb on frameworks can also improve electrical conductivity and relieve the problems related to volume expansion. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy analyses have been performed to study reactions occurred in spindle-like FeySs/N-C nanohybrid electrode at both bulk and surface.展开更多
High energy ball-milled iron sulfides with thin carb on layer coati ng(BM-FeS/C composites)were prepared by the simple and econo mical process.Ball-milled process,followed by carb on coati ng,reduced the particle size...High energy ball-milled iron sulfides with thin carb on layer coati ng(BM-FeS/C composites)were prepared by the simple and econo mical process.Ball-milled process,followed by carb on coati ng,reduced the particle size and increased the electrical con ductivity.Whe n employed as sodium-ion battery ano des,BM?F eS/C composites showed extremely high electrochemical performa nee with reversible specific capacity of 589.8 mAh·g^-1 after 100 cycles at a current density of 100 mA·g^-1.They also exhibited superior rate capabilities of 375.9 mAh·g^-1 even at 3.2 Ag^1 and 423.6 mAh·g^-1 at 1.5 Ag_1.X-ray absorptio n near edge structure an alysis con firmed the electrochemical pathway for con version reaction of BM-FeS/C composites.展开更多
基金supported by the National Key R&D Program of China(2017YFC1600100 and 2017YFC1200203)the National Natural Science Foundation of China(81702040)the National Science Foundation of Zhejiang Province,China(LY20H190002).
文摘This study aimed to determine the clinical characteristics of patients diagnosed with the coronavirus disease 2019(COVID-19).Clinical data of COVID-19 patients diagnosed between January 28,2020 and February 23,2020 at the Beijing You'an Hospital were summarized and analyzed.Overall,45(18 men and 27 women)patients were included in this study.The average age of patients was 58 years(range,7–94 years).Furthermore,21 patients(47%)experienced underlying chronic diseases,with another four patients(9%)having three or more chronic diseases simultaneously.The first symptoms appeared at the onset of illness onset include fever in 36 patients(80%),cough in 23 patients(51%),and expectoration in 15 patients(33%),respectively.Patientsmay experience hepatic and renal injury as well as abnormal myocardial enzymes in varying degrees.Senior patients(≥58)and accompanying chronic diseases were considered as independent predictors for developing a severe and critically ill population with increased mortality.Laboratory results regarding the NEU percentage,NLR,ALC,and C-reactive protein levels were considered significant in predicting clinically critical disease or for prognosis assessment and thus require further studies.COVID-19 may affect multiple organs of the human body.Glucocorticoid is considered effective in the treatment of patients diagnosed with severe COVID-19.
文摘Iron sulfides have bee n con sidered as one of the most promising can didates for sodium ion battery anode materials due to their high theoretical capacity and low cost. I n this work, spin dle-like Fe7S8 with n itroge rvdoped carb on (FeiS/N-C) nano hybrids are successfully syn thesized via a solvothermal method by sulfidation iron-based metal organic framework (FeMOF). As sodium ion battery an odes, FeySs/N-C nano hybrids exhibit high reversible capacity of 450.8 mAh g-1 at 200 mA·g^-1, and 406.7 mAh·g^-1 at 500 mA·g^-1 even after 500 cycles. They also show excellent rate properties and delivering the capacity of 327.8 mAh·g^-1 at a very high current density of 3.2 A·g^-1. These outstanding electrochemical performa nces can be attributed to the unique structure of Fe7S8/ N-C nan ohybrids. The nano scale dime nsion in their size can be ben eficial for facile ion and electro n tran sports. Furthermore, the stable n itroge n doped carb on frameworks can also improve electrical conductivity and relieve the problems related to volume expansion. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy analyses have been performed to study reactions occurred in spindle-like FeySs/N-C nanohybrid electrode at both bulk and surface.
文摘High energy ball-milled iron sulfides with thin carb on layer coati ng(BM-FeS/C composites)were prepared by the simple and econo mical process.Ball-milled process,followed by carb on coati ng,reduced the particle size and increased the electrical con ductivity.Whe n employed as sodium-ion battery ano des,BM?F eS/C composites showed extremely high electrochemical performa nee with reversible specific capacity of 589.8 mAh·g^-1 after 100 cycles at a current density of 100 mA·g^-1.They also exhibited superior rate capabilities of 375.9 mAh·g^-1 even at 3.2 Ag^1 and 423.6 mAh·g^-1 at 1.5 Ag_1.X-ray absorptio n near edge structure an alysis con firmed the electrochemical pathway for con version reaction of BM-FeS/C composites.
