船用热轧球扁钢的研制与开发

安钢根据市场需求,通过合理的工艺设计及严密的生产组织,研制开发出船用热轧球扁钢。产品力学性能、几何尺寸和表面质量等完全达到国标GB9945—2001及ABS、CCS、BV、LR、GL等五国船规技术要求。     

涡轮流量计故障分析与处理

在科威特27#集油站投产保运期间,外输轻质油流量计投用时发现差压流量计指示正常,而FC50系列涡轮流量计无指示,轻质油外输工艺流程如图1。FC50系列涡轮流量计为轻质油外输累积计量流量计,业主十分关注,需尽快解决。经自己认真检查、分析、处理,使问题得到了圆满解决,为公司赢得了荣誉。     

胰岛素对初发2型糖尿病的疗效及影响

目的:观察胰岛素对初发2型糖尿病的疗效及不良反应,以及对血糖的影响.方法:选择2008年1月至2010年1月在我院住院的T2DM患者为观察对象.120例初发2型糖尿病患者随机分为治疗组和对照组各60例,治疗3个月后,观察治疗的疗效及对血糖控制情况.结果:治疗组的疗效优于对照组,且治疗组血糖控制效果明显优于对照组,差异有统计学意义(P＜0.05).结论:胰岛素对初发2型糖尿病疗效确切,更好地降低T2DM血糖水平,值得基层医院广泛推广和应用.     

Radiation synthesis of PVP/CMC hydrogels as wound dressing

Carboxymethyl cellulose (CMC) and poly(N-vinyl pyrrolidone) (PVP) were blended to synthesize hydrogels by ⁶⁰Co γ-ray irradiation. A series of hydrogels were prepared with three compositions, i.e. PVP:CMC = 5:5, 6:4 and 7:3. The properties of the hydrogels such as gel fraction, gel strength, swelling behavior and moisture retention were investigated. Compared with pure PVP and CMC hydrogels, PVP/CMC blend hydrogels possessed improved gel strength, flexibility and transparency. As the content of PVP in PVP/CMC blend hydrogels increased, the gel fraction increased while the swelling rate decreased. The hydrogels with optimal properties were obtained in a composition of PVP/CMC = 6/4 with sterilization dose (25 kGy) and further characterized by FT-IR and SEM. Properties concerning the application of wound dressing were performed by comparison with a commercial hydrogel wound dressing to find a similar moisture retention capability and improved swelling rate. The improved properties as well as the cheapness of the materials suggest that PVP/CMC blend hydrogel can be good candidate as wound dressing.     

用CR－39固体径迹探测器测定重带电粒子的Bragg峰位

采用ＣＲ－３９固体径迹探测器，根据辐射损伤密度沿粒子的径迹分布规律，测定了经３、４ｃｍ空气降能和φ１ｍｍ孔准直的α粒子（５．１５ＭｅＶ）的Ｂｒａｇｇ峰位。对于通过３ｃｍ空气后能量降至～１２ＭｅＶ的α粒子，在ＣＲ－３９中的Ｂｒａｇｇ峰位大约在７μｍ深度处，理论计算值在６．１４μｍ，实验值与理论值符合得较好。     

新城金矿床围岩蚀变与金矿化的关系

本文就新城金矿围岩蚀变的特征、与金矿化的关系、金与多金属硫化物的关系、依变岩石中金的富集规律进行了探讨,指出了围岩蚀变是重要的成矿地质条件．     

铁（Ⅲ）－1，10－二氮杂菲－甲基橙三元络合物光度法测定铁的研究

提出了铁（Ⅲ）－１,１０－二氮杂菲（Ｐｈｅｎ）－甲基橙（ＭＯ）三元络合物体系光度法测定Ｆｅ（Ⅲ）的新方法。该方法的灵敏度高（ε＝８．１×１０４）,选择性好,准确可靠,用于测定金属和化学试剂中痕量铁,结果满意。     

Effects of Technical Conditions on Structure, Morphology and Crystalline Size of Nanocrystalline Nd-Doped Ceria Powders

Nanocrystalline solid solution CeO2-Nd2O3 powders were prepared by low temperature combustion process.Special attention was paid to the influence of the glycine/metal ratio and calcination temperature on the powders phase structure, morphology and particle size.TG-DSC curves and XRD peaks of different glycine/metal ratio show that smaller particle size can be obtained with a slightly fuel-deficient ratio.XRD results indicate that the as-prepared powders are crystallized in a single fluorite structure.The crystalline size ranges from 9 to 24 nm, which increases with the increase of calcination temperature.The lower SEM images were characterized by the spongy and form-like microstructure of the powders.Organic agent may be gradually eliminated by high temperature calcination process.     

金矿矿源层和含金建造刍议

在矿源层评价中,相对于岩石中的金丰度,金的赋存状态具有更重要的意义,因此在工作中应恢复岩石的原始含金性,并计算区域金丰度值.本文还讨论了含金建造的概念、分布和评价准则等问题.