Objective To investigate the risk factors for prolonged postoperative mechanical ventilation patients with atrioventricular septal defect(AVSD).Methods We retrospectively analyzed the clinical data of 76 patients with...Objective To investigate the risk factors for prolonged postoperative mechanical ventilation patients with atrioventricular septal defect(AVSD).Methods We retrospectively analyzed the clinical data of 76 patients with atrioventricular septal defect aged more than 18 years in our hospital from January 1^st 2011 to December 31^st 2017.展开更多
随着世界各国步入老龄化社会,越来越多的老龄患者因结直肠恶性肿瘤而需要外科治疗,如何评价患者的身体条件及预测手术风险,一直是外科医生重点关注的问题。英国Copeland等[1]1991年建立病死率和并发症率的生理学及手术严重性评分（physi...随着世界各国步入老龄化社会,越来越多的老龄患者因结直肠恶性肿瘤而需要外科治疗,如何评价患者的身体条件及预测手术风险,一直是外科医生重点关注的问题。英国Copeland等[1]1991年建立病死率和并发症率的生理学及手术严重性评分（physiological and operative severity score for the enumeration of mortality and morbidity,简称POSSUM）,预测术后病死率和并发症发生率。展开更多
The morbidity problem of the GM（1,1） power model in parameter identification is discussed by using multiple and rotation transformation of vectors. Firstly we consider the morbidity problem of the special matrix and...The morbidity problem of the GM（1,1） power model in parameter identification is discussed by using multiple and rotation transformation of vectors. Firstly we consider the morbidity problem of the special matrix and prove that the condition number of the coefficient matrix is determined by the ratio of lengths and the included angle of the column vector, which could be adjusted by multiple and rotation transformation to turn the matrix to a well-conditioned one. Then partition the corresponding matrix of the GM（1,1） power model in accordance with the column vector and regulate the matrix to a well-conditioned one by multiple and rotation transformation of vectors, which completely solve the instability problem of the GM（1,1） power model. Numerical results show that vector transformation is a new method in studying the stability problem of the GM（1,1） power model.展开更多
Liver tumours are among the most commonmalignancies worldwide. The international incidenceof the disease is about l million cases per year (male:femalc, 4: 1 ). These include primary and secondarytumours. Cancer is kn...Liver tumours are among the most commonmalignancies worldwide. The international incidenceof the disease is about l million cases per year (male:femalc, 4: 1 ). These include primary and secondarytumours. Cancer is known to be a genetic disease thatinvolves the alteration of activity of the products of atleast 2 genes, due to mutation (s) and/or otherfactors, e. g., the presence of viral oncoproteins. Thegenes most affected are the tumour suppressor展开更多
Background and Objective Prediabetes(Pre-DM)is a serious condition that is associated with an increase in cardiovascular morbidity and mortality.We sought to explore the prevalence of prediabetes in patients admitted ...Background and Objective Prediabetes(Pre-DM)is a serious condition that is associated with an increase in cardiovascular morbidity and mortality.We sought to explore the prevalence of prediabetes in patients admitted with coronary artery disease who were not known to have diabetes and to determine the impact of prediabetes on 2-year clinical outcomes versus non-diabetic patients.展开更多
文摘Objective To investigate the risk factors for prolonged postoperative mechanical ventilation patients with atrioventricular septal defect(AVSD).Methods We retrospectively analyzed the clinical data of 76 patients with atrioventricular septal defect aged more than 18 years in our hospital from January 1^st 2011 to December 31^st 2017.
文摘随着世界各国步入老龄化社会,越来越多的老龄患者因结直肠恶性肿瘤而需要外科治疗,如何评价患者的身体条件及预测手术风险,一直是外科医生重点关注的问题。英国Copeland等[1]1991年建立病死率和并发症率的生理学及手术严重性评分（physiological and operative severity score for the enumeration of mortality and morbidity,简称POSSUM）,预测术后病死率和并发症发生率。
基金supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China(20120143110001)the General Education Program Requirements in the Humanities and Social Sciences of China(11YJC630155)the Youth Foundation of Hubei Province of China(Q20121203)
文摘The morbidity problem of the GM（1,1） power model in parameter identification is discussed by using multiple and rotation transformation of vectors. Firstly we consider the morbidity problem of the special matrix and prove that the condition number of the coefficient matrix is determined by the ratio of lengths and the included angle of the column vector, which could be adjusted by multiple and rotation transformation to turn the matrix to a well-conditioned one. Then partition the corresponding matrix of the GM（1,1） power model in accordance with the column vector and regulate the matrix to a well-conditioned one by multiple and rotation transformation of vectors, which completely solve the instability problem of the GM（1,1） power model. Numerical results show that vector transformation is a new method in studying the stability problem of the GM（1,1） power model.
文摘Liver tumours are among the most commonmalignancies worldwide. The international incidenceof the disease is about l million cases per year (male:femalc, 4: 1 ). These include primary and secondarytumours. Cancer is known to be a genetic disease thatinvolves the alteration of activity of the products of atleast 2 genes, due to mutation (s) and/or otherfactors, e. g., the presence of viral oncoproteins. Thegenes most affected are the tumour suppressor
文摘Background and Objective Prediabetes(Pre-DM)is a serious condition that is associated with an increase in cardiovascular morbidity and mortality.We sought to explore the prevalence of prediabetes in patients admitted with coronary artery disease who were not known to have diabetes and to determine the impact of prediabetes on 2-year clinical outcomes versus non-diabetic patients.
