In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic com...In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic combination depressant FDi and introduced sodium oleate j FeCls and FDi as the flotation agent, they achieved success. In the experimental re-search on the artificiallymixed ores separation, the recovery and concentra-tion grade of the two minerals ivere both over 92% and 95% respectively. At the same time , it was found that the chemical absorption form of iron oleate presented bridge and chelating patterns on the surfaces of garnet and wollastonite activated by Fe3+.展开更多
Aorta–right atrial tunnel(ARAT)is an extremely rare congenital heart malformation with an average age of diagnosis of approximately 20 years.Its clinical symptoms are varied and often atypical.ARAT usually originates...Aorta–right atrial tunnel(ARAT)is an extremely rare congenital heart malformation with an average age of diagnosis of approximately 20 years.Its clinical symptoms are varied and often atypical.ARAT usually originates from the left or right sinus of Valsalva.In this case report,we aim to share a rare case of ARAT originating from the noncoronary sinus in an infant.The patient presented with a cardiac murmur,a dilated right heart,and a tortuous tunnel originating from the dilated noncoronary sinus and terminating at the right atrium in echocardiogram and computed tomography angiography.The patient underwent surgical closure of the tunnel to prevent possible heart failure.Postoperative echocardiography revealed complete closure of the tunnel with no residual ffow.No evidence of aortic valve regurgitation or aortic root dilation was detected during 6-month follow-up.展开更多
Membrane computing is an emergent branch of natural computing, which is inspired by the structure and the functioning of living cells, as well as the organization of cells in tissues, organs, and other higher order st...Membrane computing is an emergent branch of natural computing, which is inspired by the structure and the functioning of living cells, as well as the organization of cells in tissues, organs, and other higher order structures. Tissue P systems are a class of the most investigated computing mod- els in the framework of membrane computing, especially in the aspect of efficiency. To generate an exponential resource in a polynomial time, cell separation is incorporated into such systems, thus obtaining so called tissue P systems with cell separation. In this work, we exploit the computational efficiency of this model and construct a uniform family of such tissue P systems for solving the independent set problem, a well-known NP-complete problem, by which an efficient so- lution can be obtained in polynomial time.展开更多
文摘In order to nealize the efficient floatation separation of garnet and uiollastonite , the authors studied the surface chemical charac-teristics and various floatation behaviour of the two minerals?developed acidic combination depressant FDi and introduced sodium oleate j FeCls and FDi as the flotation agent, they achieved success. In the experimental re-search on the artificiallymixed ores separation, the recovery and concentra-tion grade of the two minerals ivere both over 92% and 95% respectively. At the same time , it was found that the chemical absorption form of iron oleate presented bridge and chelating patterns on the surfaces of garnet and wollastonite activated by Fe3+.
基金supported by the National Clinical Key Specialty Construction Project(Grant number:10000015Z155080000004)Shanghai Research Center for Pediatric Cardiovascular Diseases(Grant number:2023ZZ02024).
文摘Aorta–right atrial tunnel(ARAT)is an extremely rare congenital heart malformation with an average age of diagnosis of approximately 20 years.Its clinical symptoms are varied and often atypical.ARAT usually originates from the left or right sinus of Valsalva.In this case report,we aim to share a rare case of ARAT originating from the noncoronary sinus in an infant.The patient presented with a cardiac murmur,a dilated right heart,and a tortuous tunnel originating from the dilated noncoronary sinus and terminating at the right atrium in echocardiogram and computed tomography angiography.The patient underwent surgical closure of the tunnel to prevent possible heart failure.Postoperative echocardiography revealed complete closure of the tunnel with no residual ffow.No evidence of aortic valve regurgitation or aortic root dilation was detected during 6-month follow-up.
文摘Membrane computing is an emergent branch of natural computing, which is inspired by the structure and the functioning of living cells, as well as the organization of cells in tissues, organs, and other higher order structures. Tissue P systems are a class of the most investigated computing mod- els in the framework of membrane computing, especially in the aspect of efficiency. To generate an exponential resource in a polynomial time, cell separation is incorporated into such systems, thus obtaining so called tissue P systems with cell separation. In this work, we exploit the computational efficiency of this model and construct a uniform family of such tissue P systems for solving the independent set problem, a well-known NP-complete problem, by which an efficient so- lution can be obtained in polynomial time.
基金supported by the Project of China Postdoctoral Science Foundation (No. 2014M552397)the Fundamental Research Funds for the Central Universities (No.310821165006)Scientific Research Program of Zhejiang Communications(2014H35)
