Objective.To identify the A3243G mutation of mi tochondrial(mt )DNA in patients with latent autoimmu ne diabetes mellitus in adults(LADA)of Han nationality in the northeast a rea of China.Methods.Seventy-nine diabetic...Objective.To identify the A3243G mutation of mi tochondrial(mt )DNA in patients with latent autoimmu ne diabetes mellitus in adults(LADA)of Han nationality in the northeast a rea of China.Methods.Seventy-nine diabetics of Han natio nality,whose families have resided in the northeast area of China for more than 3generations,we re divided into 3groups:Group 1(22cases of type 2diabetes with mater-nal inheritance history),Group 2(34cases of LADA),Group 3(23cases of type 1diabetes in adolesc ents).The A3243G of mt DNA was detected in th ese 79subjects with the method of PCR-RFLP.Results.None of the 79diabetics studied was p ositively identified for the A3243G mutation of mt DNA.Conclusion.The A3243G mutation of mt DNA might not be related to the onset of LADA in dia betic popula-tion of Han nationality in northeast area of China and there might not be close relationship between A3243G mut a-tion of mt DNA and autoimmunity.展开更多
Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sis...Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sise distribution and tbe cleanness. This paper puts forward a new way for ultra-fine grinding of powders, that is, applying DIA-jet (direct injection abrasive jet) in powder ultra-fine grinding. Its mechanism is discussed . Experiments on the fine grinding of mica, kaolin, soft clay and calcium bicarbonate powders have been carried out with a DIA-jet device in our laboratory. The experimental results show that it is an effective way for powder fine grinding.展开更多
文摘Objective.To identify the A3243G mutation of mi tochondrial(mt )DNA in patients with latent autoimmu ne diabetes mellitus in adults(LADA)of Han nationality in the northeast a rea of China.Methods.Seventy-nine diabetics of Han natio nality,whose families have resided in the northeast area of China for more than 3generations,we re divided into 3groups:Group 1(22cases of type 2diabetes with mater-nal inheritance history),Group 2(34cases of LADA),Group 3(23cases of type 1diabetes in adolesc ents).The A3243G of mt DNA was detected in th ese 79subjects with the method of PCR-RFLP.Results.None of the 79diabetics studied was p ositively identified for the A3243G mutation of mt DNA.Conclusion.The A3243G mutation of mt DNA might not be related to the onset of LADA in dia betic popula-tion of Han nationality in northeast area of China and there might not be close relationship between A3243G mut a-tion of mt DNA and autoimmunity.
文摘Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sise distribution and tbe cleanness. This paper puts forward a new way for ultra-fine grinding of powders, that is, applying DIA-jet (direct injection abrasive jet) in powder ultra-fine grinding. Its mechanism is discussed . Experiments on the fine grinding of mica, kaolin, soft clay and calcium bicarbonate powders have been carried out with a DIA-jet device in our laboratory. The experimental results show that it is an effective way for powder fine grinding.
