Abstract:
나노 질화규소 분말과 소결조제를 포함하는 혼합물에 합성수지 및 상기 합성수지를 용해시키는 유기용매를 혼합하여 슬러리를 형성하는 단계, 상기 슬러리를 건조하여 원료 분말을 얻는 단계, 상기 원료 분말을 탄소환원처리하는 단계, 및 상기 탄소환원처리된 원료 분말을 소결하여 소결체를 얻는 단계를 포함하는 나노 질화규소계 세라믹스의 제조방법이 제공된다.
Abstract:
PURPOSE: A manufacturing method of a nano silicon nitride based ceramics is provided to obtain the high purity nano silicon nitride based ceramics by reducing the excessive oxygen content through a carbon reduction process. CONSTITUTION: A manufacturing method of a nano silicon nitride based ceramics comprises the following steps: forming slurry by mixing a mixture containing nano silicon nitride powder and a sintering aid, a synthetic resin, and an organic solvent to dissolve the synthetic resin(10); obtaining raw material powder by drying the slurry(20); carbon reduction processing the raw material powder(30); and obtaining a sintered body by sintering the carbon reduction processed raw material powder(40).
Abstract:
PURPOSE: A method for identifying protein kinase substrate specificity using a peptide library is provided to rapidly determining the substrate specificity of a protein phosphatase, and to examine the role of the protein phosphatase. CONSTITUTION: A method for identifying protein kinase substrate specificity comprises the following steps: forming a peptide library with a constant amino acid sequence on the surface of a solid support resin; forming a hybrid with randomized peptide libraries by repeating the previous step; reacting the peptide libraries with a phosphatase for forming the peptide library with phosphorylated threonine or serine; reacting an antibody combined with a biotin with the phosphorylated peptide library; reacting the obtained product with neutravidin or streptavidin including phosphatase or peroxidase; detecting the change of properties by the reaction of the phosphatase or the peroxidase for selecting the solid support resin with transformed peptide libraries; and an analyzing the amino acid sequence of the peptide after separating the peptide from the resin.