Cross-protection in plants has been widely used to control losses caused by virus diseases in the world. Here, a non-autonomous plant-virus disease model was developed includ- ing cross-protection. Global dynamics of ...Cross-protection in plants has been widely used to control losses caused by virus diseases in the world. Here, a non-autonomous plant-virus disease model was developed includ- ing cross-protection. Global dynamics of the model was discussed. Under the quite weak assumptions, integral form conditions were resolved for permanence of the system and extinction of diseases. Furthermore, we looked into the sufficient conditions that plants could be protected against the detrimental effects of infection by an infection with the mild virus isolates. Last, we performed numerical simulations. Our investigations sug- gested that cross-protection played an important role in controlling the spread of the challenging virus in plants.展开更多
Inferior dislocation of the hip is the rarest type in hip dislocation. Very few cases have been reported in the anglophonic literature, most of which involved the pediatric age group. Surprisingly, we came across a 30...Inferior dislocation of the hip is the rarest type in hip dislocation. Very few cases have been reported in the anglophonic literature, most of which involved the pediatric age group. Surprisingly, we came across a 30- year-old patient with a bilateral inferior hip dislocation. He had sustained a road traffic accident and the attitude of both hip joints was flexion and abduction. The diagnosis was confirmed by radiographs which revealed the long axis of the femur at an angle of 1 l0 （right） degrees and 100 （left）degrees respectively away from the axis. Closed reduction under sedation was successfully performed. Skin traction for a period of 6 weeks was advised and the follow-up revealed an excellent result. We present the details of this case, the first of its kind along with a review of the literature, discussing the various modes and mechanisms of injury inducing inferior dislocation of the hip.展开更多
基金The research has been supported by the National Natural Science Foundation of China （11561004）, the Development for Local Colleges and Universities Foundation of China - the Applied Mathematics Innovative Team Building, and the Bidding Project of Gannan Normal University （16zb02）.
文摘Cross-protection in plants has been widely used to control losses caused by virus diseases in the world. Here, a non-autonomous plant-virus disease model was developed includ- ing cross-protection. Global dynamics of the model was discussed. Under the quite weak assumptions, integral form conditions were resolved for permanence of the system and extinction of diseases. Furthermore, we looked into the sufficient conditions that plants could be protected against the detrimental effects of infection by an infection with the mild virus isolates. Last, we performed numerical simulations. Our investigations sug- gested that cross-protection played an important role in controlling the spread of the challenging virus in plants.
文摘Inferior dislocation of the hip is the rarest type in hip dislocation. Very few cases have been reported in the anglophonic literature, most of which involved the pediatric age group. Surprisingly, we came across a 30- year-old patient with a bilateral inferior hip dislocation. He had sustained a road traffic accident and the attitude of both hip joints was flexion and abduction. The diagnosis was confirmed by radiographs which revealed the long axis of the femur at an angle of 1 l0 （right） degrees and 100 （left）degrees respectively away from the axis. Closed reduction under sedation was successfully performed. Skin traction for a period of 6 weeks was advised and the follow-up revealed an excellent result. We present the details of this case, the first of its kind along with a review of the literature, discussing the various modes and mechanisms of injury inducing inferior dislocation of the hip.
