Poor wearability is the most serious problem of domestic sewing needle, which is the main reason for their short service lives. The influences of needle materials, microstructures and manufacturing technologies on the...Poor wearability is the most serious problem of domestic sewing needle, which is the main reason for their short service lives. The influences of needle materials, microstructures and manufacturing technologies on the wear resistance are analyzed in comparison with foreign sewing needles. A series of suitable measures are proposed to improve the wear resistance.展开更多
Foreign body ingestion is a common presentation but the extraluminal migration of a foreign body is rare. A 46-year-old man presented with protruded sharp swelling left side of neck, X-rays and CT scan of the neck sho...Foreign body ingestion is a common presentation but the extraluminal migration of a foreign body is rare. A 46-year-old man presented with protruded sharp swelling left side of neck, X-rays and CT scan of the neck showed a needle migrating from the pyriform fossa to the skin. Carotid angiography was also done to see the relations of foreign body with great vessels. Transcutaneous removal of foreign body was done under general anesthesia. The migrated foreign body was a sewing needle which patient unknowingly swallowed two days back. Migrated ingested foreign bodies from the upper digestive tract have the potential to cause life-threatening complications. Cases of spontaneous expulsion of ingested foreign bodies to the skin of the neck are quite rare.展开更多
A new way to solve the scheduling problem ofgarment assembly line based on genetic algorithmwas proposed. The chromosome was decoded usingtask precedence relation and after the operation ofreproduction, crossover and ...A new way to solve the scheduling problem ofgarment assembly line based on genetic algorithmwas proposed. The chromosome was decoded usingtask precedence relation and after the operation ofreproduction, crossover and mutation, the globaloptimal result can be obtained. Fitness function wasrepresented by smoothness Index ( SI ). Thesimulation shows that the method proposed in thispaper is better than the conventional way and theoptimized solution can be got in this way.展开更多
基金the framework of the China-Greece joint research andtechnology programmes 2000-2002(Project title:‘Investigation on the characteristics of forest fires in the early stage andits control technique National Natural Science Foundation of China under Grants 50346038 , 50320120156,the China NK-BRSF project(No.2001CB409600)the Anhui Ex-cellent Youth Scientist Fundation(2001-2002),and the National Key Technologies R&D Programme(2001BA510B09-03).
文摘Poor wearability is the most serious problem of domestic sewing needle, which is the main reason for their short service lives. The influences of needle materials, microstructures and manufacturing technologies on the wear resistance are analyzed in comparison with foreign sewing needles. A series of suitable measures are proposed to improve the wear resistance.
文摘Foreign body ingestion is a common presentation but the extraluminal migration of a foreign body is rare. A 46-year-old man presented with protruded sharp swelling left side of neck, X-rays and CT scan of the neck showed a needle migrating from the pyriform fossa to the skin. Carotid angiography was also done to see the relations of foreign body with great vessels. Transcutaneous removal of foreign body was done under general anesthesia. The migrated foreign body was a sewing needle which patient unknowingly swallowed two days back. Migrated ingested foreign bodies from the upper digestive tract have the potential to cause life-threatening complications. Cases of spontaneous expulsion of ingested foreign bodies to the skin of the neck are quite rare.
基金Financed by Henan provincial Fund (No. 0324300201)
文摘A new way to solve the scheduling problem ofgarment assembly line based on genetic algorithmwas proposed. The chromosome was decoded usingtask precedence relation and after the operation ofreproduction, crossover and mutation, the globaloptimal result can be obtained. Fitness function wasrepresented by smoothness Index ( SI ). Thesimulation shows that the method proposed in thispaper is better than the conventional way and theoptimized solution can be got in this way.
