热轧带肋钢筋22MnSiV的研制

系统的研究了热轧带肋钢筋22MnSiV各项性能，其各项性能不仅达到GB1449－1998中HRB400的要求，还有其特性，脆性转变温度低于－40℃，抗形变时效，高应变低周疲劳性能好，因此，特别适用于地震区，寒冷地区，也适用于钢筋混凝土结构。     

炉顶红外摄像监控系统在攀钢高炉上的应用

通过在3＃、4＃高炉安装炉顶红外摄像监控系统，获得了对高炉操作具有指导意义的直观影像，便于监测炉内科面状况和气流分布，指导高炉的上、下部调剂及高炉特殊炉况的判断处理。     

Analysis of ochratoxin A in pig kidney and rye flour using liquid chromatography tandem mass spectrometry (LC/MS/MS)

A liquid chromatography electrospray tandem mass spectrometric (LC/MS/MS) method is described for analysis and confirmation of ochratoxin A in pig kidney and rye flour using derivatization of ochratoxin A to the methyl ester. Ochratoxin A methyl(d₃)ester is used as internal standard. The method works well, the detection limit is 0.02 μ g/kg and the repeatability (coefficient of variation) is between 6% and 16% in the contamination range 0.5 to 8 μ g/kg.     

Double mutant cycle analysis of aspartate 69, 97, and 103 to asparagine mutants in the m2 muscarinic acetylcholine receptor

Double mutant cycles provide a method for analyzing the effects of a mutation at a defined position in the protein structure on the properties of an amino acid at a second site. This approach was used to map potential interactions between aspartates 69, 97, and 103 in the m2 muscarinic acetylcholine receptor transmembrane helices 2 and 3. Receptors containing single and double aspartate to asparagine mutants were expressed in Chinese hamster ovary cells and their effects on ligand binding, signal transduction, and thermal stability determined. Analysis of the double mutant cycles showed that the mutations had approximately additive effects on ligand binding, signal transduction, and thermal stability. Ligand binding and thermal inactivation results support the conclusion that aspartate-103 is the ligand amine counterion. Effector coupling properties of the mutant receptors showed that aspartate-103 was also required for signal transduction activity. The mutation of aspartate-69 to asparagine completely eliminated signal transduction by the agonists acetylcholine, carbachol, and pilocarpine but not oxotremorine M, which caused reduced but significant inhibition of adenylyl cyclase and stimulation of phospholipase C. In contrast, adenylyl cyclase stimulation by the asparagine-69 mutant was elicited only by acetylcholine and carbachol but not by oxotremorine M. The variation in agonist-dependent effector coupling properties provides evidence that the asparagine-69 mutant can exist in activated receptor states that are different from the wild-type m2 muscarinic receptor.     

现代转炉炼钢技术及对攀钢炼钢发展的建议

回顾了转炉炼钢技术的发展历程及中个时期的主要技术进步，介绍了当代转炉炼钢的重要技术，结合具体实际情况，提出了攀钢炼钢技术发展的建议。