Considering the self-gravitation and energy conservation as well as charge conservation, we extend Medved and Vagenas＇s quantum tunneling method to the global monopole charged black hole, and give a correction to Haw...Considering the self-gravitation and energy conservation as well as charge conservation, we extend Medved and Vagenas＇s quantum tunneling method to the global monopole charged black hole, and give a correction to Hawking radiation of a charged particle.展开更多
The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-ba...The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-based design method, the TLP is designed to withstand N-year responses rather than respond to N-year environmental conditions. In this paper, we present an overview and a general procedure for the response-based design method and use a case study to compare the critical TLP responses between the two methods. The results of our comparison show that the conventional short-term design method often contains an element of conservatism and that the response-based design method can reduce the design conditions and thereby achieve cost savings.展开更多
Underwater sensor network can achieve the unmanned environmental monitoring and military monitoring missions.Underwater acoustic sensor node cannot rely on the GPS to position itself,and the traditional indirect posit...Underwater sensor network can achieve the unmanned environmental monitoring and military monitoring missions.Underwater acoustic sensor node cannot rely on the GPS to position itself,and the traditional indirect positioning methods used in Ad Hoc networks are not fully applicable to the localization of underwater acoustic sensor networks.In this paper,we introduce an improved underwater acoustic network localization algorithm.The algorithm processes the raw data before localization calculation to enhance the tolerance of random noise.We reduce the redundancy of the calculation results by using a more accurate basic algorithm and an adjusted calculation strategy.The improved algorithm is more suitable for the underwater acoustic sensor network positioning.展开更多
Isolated coronal fractures of femoral condyle are rare in adults and nonunion of Hoffa fracture is reported only a few times in the literature. We analyzed six cases of nonunion of Hoffa fractures over a period of thr...Isolated coronal fractures of femoral condyle are rare in adults and nonunion of Hoffa fracture is reported only a few times in the literature. We analyzed six cases of nonunion of Hoffa fractures over a period of three years. Three patients were treated conservatively and three patients had fixation failures. Delay of presentation was 2 months to one year. Treatment protocol consisted of open reduction, excision of pseudoarthrosis, bone grafting and internal fixation along with knee arthrolysis. Union wasachieved in all patients at mean 16 weeks. The treatment of nonunion of Hoffa fractures requires careful preoperative planning and meticulous surgical technique. The literature regarding the controversies in fracture management and surgical technique are reviewed.展开更多
Reactive arthritis or Reiter＇s syndrome characteristically affects the joint of the lower limb in an asymmetrical pattern. Usually it does not affect the axial skeleton or upper limbs. Although cases of atraumatic at...Reactive arthritis or Reiter＇s syndrome characteristically affects the joint of the lower limb in an asymmetrical pattern. Usually it does not affect the axial skeleton or upper limbs. Although cases of atraumatic at- lantoaxial subluxations have been reported, no case of spon- taneous sternoclavicular dislocation in Reiter＇s syndrome has been reported. This paper describes a case of a 26 year old male patient who developed a spontaneous posterior sternoclavicular joint dislocation. No attempt of reduction was made and the patient was managed conservatively with good results.展开更多
Infraglenoid tubercle avulsion fractures are extremely rare injuries.We report a 38-year-old male with glenoid cavity fracture and infraglenoid tubercle avulsion of the left shoulder following a fall from bike.He refu...Infraglenoid tubercle avulsion fractures are extremely rare injuries.We report a 38-year-old male with glenoid cavity fracture and infraglenoid tubercle avulsion of the left shoulder following a fall from bike.He refused surgery and was treated nonoperatively.Follow-up radiography and CT at 18 months revealed a malunited infraglenoid tubercle with signs of early glenohumeral osteoarthritis.He did not have shoulder instability or pain and had a fair-good functional outcome.There are no previously published data on the anatomic outcome of nonoperatively treated displaced infraglenoid tubercle avulsion fractures based on CT.展开更多
Isolated radial head fractures are rare and comprise about 2% of all fractures around the elbow. Bilateral radial head fractures are even rarer and few cases have been reported. We present a case of bilateral elbow ef...Isolated radial head fractures are rare and comprise about 2% of all fractures around the elbow. Bilateral radial head fractures are even rarer and few cases have been reported. We present a case of bilateral elbow effusion in a 28-year-old male patient. An initial diagnosis of inflammatory arthritis was made but on investigation it turned out to be a case of bilateral radial head fracture. The patient was managed conservatively with 10 days of immobilisation in above elbow slab followed by active elbow range of movement exercises. On follow-up at 6 months, the patient had near normal range of movements without pain or elbow instability.展开更多
In this report we analyse a case of ischi- atic tuberosity avulsion. A 15-year-old patient who came to our first aid department two days after a football match ac- cident was treated conservatively and examined at mon...In this report we analyse a case of ischi- atic tuberosity avulsion. A 15-year-old patient who came to our first aid department two days after a football match ac- cident was treated conservatively and examined at month 1- 4, 6 and 12. In order to examine patient condition, a new index was formulated： the inability score index （ISI）, which is based on hip range of motion and scales for rest, walking, running pain and compared to other parameters such as oedema area, fragment diastasis evaluated by X-ray and CT accordingly. ISI defines the inability as severe, moderate and mild. It guides the rehabilitative program in the right way. In this case, the patient was able to run softly after 35 days and to go back to the full agonist activity after 4 months. At the end of treatment the patient referred to the complete pain remission, full range of motion recovery and a good fracture consolidation. After 1 year we discuss about thera- peutic strategies used and results obtained.展开更多
基金supported by National Science Foundation of China under Grant No. 10773008Sichuan Province Foundation for Fundamental Research under Grand No. 05JY029-092
文摘Considering the self-gravitation and energy conservation as well as charge conservation, we extend Medved and Vagenas＇s quantum tunneling method to the global monopole charged black hole, and give a correction to Hawking radiation of a charged particle.
文摘The typical industry practice for Tension Leg Platform （TLP） design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-based design method, the TLP is designed to withstand N-year responses rather than respond to N-year environmental conditions. In this paper, we present an overview and a general procedure for the response-based design method and use a case study to compare the critical TLP responses between the two methods. The results of our comparison show that the conventional short-term design method often contains an element of conservatism and that the response-based design method can reduce the design conditions and thereby achieve cost savings.
基金performed in the Project "The Research of Cluster Structure Based Underwater Acoustic Communication Network Topology Algorithm"supported by National Natural Science Foundation of China(No.61101164)
文摘Underwater sensor network can achieve the unmanned environmental monitoring and military monitoring missions.Underwater acoustic sensor node cannot rely on the GPS to position itself,and the traditional indirect positioning methods used in Ad Hoc networks are not fully applicable to the localization of underwater acoustic sensor networks.In this paper,we introduce an improved underwater acoustic network localization algorithm.The algorithm processes the raw data before localization calculation to enhance the tolerance of random noise.We reduce the redundancy of the calculation results by using a more accurate basic algorithm and an adjusted calculation strategy.The improved algorithm is more suitable for the underwater acoustic sensor network positioning.
文摘Isolated coronal fractures of femoral condyle are rare in adults and nonunion of Hoffa fracture is reported only a few times in the literature. We analyzed six cases of nonunion of Hoffa fractures over a period of three years. Three patients were treated conservatively and three patients had fixation failures. Delay of presentation was 2 months to one year. Treatment protocol consisted of open reduction, excision of pseudoarthrosis, bone grafting and internal fixation along with knee arthrolysis. Union wasachieved in all patients at mean 16 weeks. The treatment of nonunion of Hoffa fractures requires careful preoperative planning and meticulous surgical technique. The literature regarding the controversies in fracture management and surgical technique are reviewed.
文摘Reactive arthritis or Reiter＇s syndrome characteristically affects the joint of the lower limb in an asymmetrical pattern. Usually it does not affect the axial skeleton or upper limbs. Although cases of atraumatic at- lantoaxial subluxations have been reported, no case of spon- taneous sternoclavicular dislocation in Reiter＇s syndrome has been reported. This paper describes a case of a 26 year old male patient who developed a spontaneous posterior sternoclavicular joint dislocation. No attempt of reduction was made and the patient was managed conservatively with good results.
文摘Infraglenoid tubercle avulsion fractures are extremely rare injuries.We report a 38-year-old male with glenoid cavity fracture and infraglenoid tubercle avulsion of the left shoulder following a fall from bike.He refused surgery and was treated nonoperatively.Follow-up radiography and CT at 18 months revealed a malunited infraglenoid tubercle with signs of early glenohumeral osteoarthritis.He did not have shoulder instability or pain and had a fair-good functional outcome.There are no previously published data on the anatomic outcome of nonoperatively treated displaced infraglenoid tubercle avulsion fractures based on CT.
文摘Isolated radial head fractures are rare and comprise about 2% of all fractures around the elbow. Bilateral radial head fractures are even rarer and few cases have been reported. We present a case of bilateral elbow effusion in a 28-year-old male patient. An initial diagnosis of inflammatory arthritis was made but on investigation it turned out to be a case of bilateral radial head fracture. The patient was managed conservatively with 10 days of immobilisation in above elbow slab followed by active elbow range of movement exercises. On follow-up at 6 months, the patient had near normal range of movements without pain or elbow instability.
文摘In this report we analyse a case of ischi- atic tuberosity avulsion. A 15-year-old patient who came to our first aid department two days after a football match ac- cident was treated conservatively and examined at month 1- 4, 6 and 12. In order to examine patient condition, a new index was formulated： the inability score index （ISI）, which is based on hip range of motion and scales for rest, walking, running pain and compared to other parameters such as oedema area, fragment diastasis evaluated by X-ray and CT accordingly. ISI defines the inability as severe, moderate and mild. It guides the rehabilitative program in the right way. In this case, the patient was able to run softly after 35 days and to go back to the full agonist activity after 4 months. At the end of treatment the patient referred to the complete pain remission, full range of motion recovery and a good fracture consolidation. After 1 year we discuss about thera- peutic strategies used and results obtained.
