INTERRUPTED aortic arch （IAA） is a rare congenital malformation that occurs in 5.8 per million live births. 1 IAA was thought to be incompatible with life once the ductus arteriosus closed. However, ifextensive coll...INTERRUPTED aortic arch （IAA） is a rare congenital malformation that occurs in 5.8 per million live births. 1 IAA was thought to be incompatible with life once the ductus arteriosus closed. However, ifextensive collateral circulation is p possible. We report treated successfully an unusual resent at case of with extra-anatomic under deep hypothermia drculatory arrest birth survival is IAA, who was aortic repair展开更多
Studied on the law and interaction of hydrological cycle and social water circulation on the earth,it is pointed out that the water environment,water resources and water cycle are the unity of water movement.The roots...Studied on the law and interaction of hydrological cycle and social water circulation on the earth,it is pointed out that the water environment,water resources and water cycle are the unity of water movement.The roots of contemporary crisis are also analyzed.The strategy of water environment recovery and social water healthy cycle is proposed and applied in many cities,which has achieved good results.展开更多
In the past two decades,dynamic covalent chemistry has been greatly developed,which is mainly reflected in two aspects:1.new dynamic covalent bonds(DCBs)are continuously discovered;2.various DCBs have been introduced ...In the past two decades,dynamic covalent chemistry has been greatly developed,which is mainly reflected in two aspects:1.new dynamic covalent bonds(DCBs)are continuously discovered;2.various DCBs have been introduced into polymer materials for different functions.These functional polymer materials have brought new opportunities for sustainable development.In this review,we provide an overview of various functions endowed by DCBs in polymer materials,including self-healing,chemical recycling,and shape controlling.Particularly,we pay much attention to the three-dimensional(3D)shape reconfiguration/programming,surface patterning,and reversible actuation.In addition,we also give the current issues,challenges,and opportunities on DCBs-containing materials and point out its developing directions in the future.展开更多
Objective: To observe the revascularization and the opportunity of cross finger flap. Methods: An animal model was developed to permit daily monitoring of neovascularization of the flap with autoradiography, tissue tr...Objective: To observe the revascularization and the opportunity of cross finger flap. Methods: An animal model was developed to permit daily monitoring of neovascularization of the flap with autoradiography, tissue transparent technique, gross observation and histological examination. Results: The revascularization of the flap was chiefly raised from the surrounding tissues. The pedicles of 334 cross finger flaps of the patients were successfully divided from 1 to 5 d after operations, averagely 3.3 d. All of the cases showed satisfatory results according to a follow up survey of 3 to 72 mon. The results further proved that the revascularization of the cross finger flaps had accomplished within 3 d. Conclusions: It suggests that the division of a cross finger flap can be carried out between the 3rd and 5th day after operation with a high degree of safety.展开更多
文摘INTERRUPTED aortic arch （IAA） is a rare congenital malformation that occurs in 5.8 per million live births. 1 IAA was thought to be incompatible with life once the ductus arteriosus closed. However, ifextensive collateral circulation is p possible. We report treated successfully an unusual resent at case of with extra-anatomic under deep hypothermia drculatory arrest birth survival is IAA, who was aortic repair
文摘Studied on the law and interaction of hydrological cycle and social water circulation on the earth,it is pointed out that the water environment,water resources and water cycle are the unity of water movement.The roots of contemporary crisis are also analyzed.The strategy of water environment recovery and social water healthy cycle is proposed and applied in many cities,which has achieved good results.
基金financially supported by the National Natural Science Foundation of China(21734006)the Foundation for Innovative Research Group of the National Natural Science Foundation of China(21821001)。
文摘In the past two decades,dynamic covalent chemistry has been greatly developed,which is mainly reflected in two aspects:1.new dynamic covalent bonds(DCBs)are continuously discovered;2.various DCBs have been introduced into polymer materials for different functions.These functional polymer materials have brought new opportunities for sustainable development.In this review,we provide an overview of various functions endowed by DCBs in polymer materials,including self-healing,chemical recycling,and shape controlling.Particularly,we pay much attention to the three-dimensional(3D)shape reconfiguration/programming,surface patterning,and reversible actuation.In addition,we also give the current issues,challenges,and opportunities on DCBs-containing materials and point out its developing directions in the future.
文摘Objective: To observe the revascularization and the opportunity of cross finger flap. Methods: An animal model was developed to permit daily monitoring of neovascularization of the flap with autoradiography, tissue transparent technique, gross observation and histological examination. Results: The revascularization of the flap was chiefly raised from the surrounding tissues. The pedicles of 334 cross finger flaps of the patients were successfully divided from 1 to 5 d after operations, averagely 3.3 d. All of the cases showed satisfatory results according to a follow up survey of 3 to 72 mon. The results further proved that the revascularization of the cross finger flaps had accomplished within 3 d. Conclusions: It suggests that the division of a cross finger flap can be carried out between the 3rd and 5th day after operation with a high degree of safety.
