The failure modes of rock and soil under compression are complex phenomena that have not been explained in a mechanical perspective. However, large amounts of studies indicate that the failure modes of rock and soil s...The failure modes of rock and soil under compression are complex phenomena that have not been explained in a mechanical perspective. However, large amounts of studies indicate that the failure modes of rock and soil samples can be categorized into eight types. In this work, the inner tensile stress and the dissipation and conversion of energy of rock and soil under compression are analyzed, then the effective conversion coefficient of energy is deduced, thus the tensile failure criterion of rock and soil under compression is established. Combined with the shear strength criterion of Mohr–Coulomb, a tensile joint shear strength criterion for rock and soil under compression is built. Therefore, a mechanical criterion model concerning the failure modes of rock and soil under compression is established and verified by tests. This model easily explains the test results in the existing literature and many natural phenomena, such as collapse.展开更多
The main purpose of this study is determining the extent of achieving American Diabetes Association （ADA） targets in diabetes type I and II at KFUH （King Fahd Hospital of University） in the year of 2012. Observati...The main purpose of this study is determining the extent of achieving American Diabetes Association （ADA） targets in diabetes type I and II at KFUH （King Fahd Hospital of University） in the year of 2012. Observational, cross sectional, retrospective study was conducted on 479 patients; the informations were reviewed using Quadramed CPR system. All the data obtainedwere analyzed by medical statistician using SPSS program. The results show that only 19.0% was achieved the target of HbA~; and the targets of LDL, HDL and TG were achieved in 38.4%, 35.9%, and 48.2% respectively. The routine ophthalmology and dietitian review were found to be in only 32.1% and 27.3%, respectively. The use of medications recommended by ADA was 51.4% for aspirin and 54.7 % for both statin and ACE inhibitor. The present study indicated that most of the ADA guidelines were not achieved in our diabetic patients being followed in our center, which is almost similar to other studies in most of the parameters. The achievement of diabetes targets is a difficult task but may not be impossible. It requires a multidisciplinary approach. So, further studies are needed to determine the reasons behind the gap between practice and guidelines.展开更多
基金Projects(41572277,41402239)supported by the National Natural Science Foundation of ChinaProject(2015A030313118)supported by the Natural Science Foundation of Guangdong Province,China+1 种基金Project(20120171110031)supported by the Specialized Research Fund for the Doctoral Program of Higher Education of ChinaProject(201607010023)supported by the Science and Technology Program of Guangzhou,China
文摘The failure modes of rock and soil under compression are complex phenomena that have not been explained in a mechanical perspective. However, large amounts of studies indicate that the failure modes of rock and soil samples can be categorized into eight types. In this work, the inner tensile stress and the dissipation and conversion of energy of rock and soil under compression are analyzed, then the effective conversion coefficient of energy is deduced, thus the tensile failure criterion of rock and soil under compression is established. Combined with the shear strength criterion of Mohr–Coulomb, a tensile joint shear strength criterion for rock and soil under compression is built. Therefore, a mechanical criterion model concerning the failure modes of rock and soil under compression is established and verified by tests. This model easily explains the test results in the existing literature and many natural phenomena, such as collapse.
文摘The main purpose of this study is determining the extent of achieving American Diabetes Association （ADA） targets in diabetes type I and II at KFUH （King Fahd Hospital of University） in the year of 2012. Observational, cross sectional, retrospective study was conducted on 479 patients; the informations were reviewed using Quadramed CPR system. All the data obtainedwere analyzed by medical statistician using SPSS program. The results show that only 19.0% was achieved the target of HbA~; and the targets of LDL, HDL and TG were achieved in 38.4%, 35.9%, and 48.2% respectively. The routine ophthalmology and dietitian review were found to be in only 32.1% and 27.3%, respectively. The use of medications recommended by ADA was 51.4% for aspirin and 54.7 % for both statin and ACE inhibitor. The present study indicated that most of the ADA guidelines were not achieved in our diabetic patients being followed in our center, which is almost similar to other studies in most of the parameters. The achievement of diabetes targets is a difficult task but may not be impossible. It requires a multidisciplinary approach. So, further studies are needed to determine the reasons behind the gap between practice and guidelines.
