水口水电站低温混凝土测温成果统计分析

通过对水口水电站大坝低温混凝土现场测温结果的统计分析，阐述夏季混凝土浇筑时的温度控制与实施情况，进而寻求动态、定量控制浇筑温度的途径。     

建设项目的职业安全卫生设计

建设项目职业安全卫生是设计工作重要的一环。在各设计阶段都应有“安全卫生”的内容，并把安全卫生设计包括在项目中，做到职业安全卫生和建设项目的“三同时”，才能保证石油化工企业的安全生产。     

大港油田孔店采油污水排放处理的研究

大港油田孔店污水站部分污水含有大量的油、固体悬浮物和其他物质，原处理工艺除油和固体悬浮物有一定的效果。但ＣＯＤｃｒ等主要指标都没有达到国家排放标准。在此基础上提出了在原流程中加入调整剂并使污水达标排放的经济可行的处理方法，且即将投入现场运行。     

A rapid microwave-assisted derivatization process for the determination of phenolic acids in brewer’s spent grains

A simple and fast method for the TMS derivatization of phenolic acids in a closed vial using microwave irradiation followed by GC/MS analysis is proposed. A full factorial design was used to investigate the effects of two independent variables, namely, time and power of microwave irradiation, on the yield of silylation reaction. The optimal conditions were tested against the classical heating derivatization procedure. No significant differences were found between the classical heating and microwave-assisted derivatization. Chromatographic separation of the nine phenolic acids examined was achieved in 16 min. The mass spectral fragmentation patterns of the derivatives obtained by the proposed method were identical to those from the classical heating. Four different batches of brewer’s spent grain were extracted and analyzed for the total phenolic acid content. Significant differences between the batches of spent grains were found for all analytes. The total phenolic acid content varied between 2688 and 4884 μg/g.     

Near-infrared spectroscopic analysis of macronutrients and energy in homogenized meals

Near-infrared (NIR) reflectance spectroscopy was evaluated as a rapid and environmentally benign technique for the simultaneous determination of macronutrients and energy in commercially available, packaged meals. Reflectance spectra (400–2498 nm) of homogenized meals were obtained with a dispersive NIR spectrometer. Protein and moisture were measured by AOAC reference methods, total fat by a semi-automated acid hydrolysis, solvent extraction, gravimetric method and total carbohydrate calculated. Energy was calculated using Atwater factors. Using multivariate analysis software, PLS models (n = 113–115 products) were developed to relate NIR spectra of homogenized meals to the corresponding reference values. The models predicted components and energy in validation samples (n = 37–38 products), overall, with r² of above 0.96. Ratios of deviation to performance were between 3.6 and 6.6, and indicated adequacy of the models for screening, quality control, or process control. Performance of the models varied substantially when used to predict sub-groups of meals within the validation set.     

我国建筑抗震技术的发展水平与成就

邢台地震以来，我国在抗震技术的各个领域都得了长足的进步。抗震基础理论的研究和应用已处于世界前沿的位置，并制定了相应的标准规范。多层和高层建筑的抗震设计有了很大发展，还进行了２亿ｍ＾２建筑的抗震加固工作。     

WLAN:甩掉线缆走向自由

无线局域网是计算机网络与无线通信技术相结合的产物，不需要铺设双绞线、同轴电缆或光纤等线缆，而是利用射频无线电或红外线，借助直接序列扩频(DSSS)或跳频扩频(FHSS)等技术，甚至是将来的超宽带传输技术(UWBT)，实现固定、半移动及移动的网络终端对INTERNET。进行较远距离的高速连接访问。因为无须支出布线方面的花费，所以节约了很大一部分LAN的安装和维护的费用，比有线LAN更具有明显的优势。     

浅谈高速公路填土压实的标准

分析了目前填土压实检测标准的不完善性,系统地总结了各类填土的工程性质,结合工程实践,在对各类土进行大量试验研究的基础上,提出了相应的压实标准和与之相应的检测方法,从而积累工程经验。     

SN/T1443.1-2004标准与ISO22000:2005标准的比较

通过对SN/T1443.1-2004标准与ISO22000:2005标准在融合HACCP系、ISO9001标准的管理原则、适用的食品法律法规,以及两者的内容形式、实质内容等方面的比较,描述了两者的异同,认为两者无论在内容形式还是在内容实质上都存在明显差异,其根本性差异在于SN/T1443.1-2004标准在与出口食品卫生相关法规性文件的结合方面,更具有指导性和可操作性,而这一点恰好是ISO22000:2005标准的不足之处.因此得出两者不等同、不等效的结论.并由此推论出,若食品生产企业不考虑出口食品法规性文件的要求,仅按ISO22000:2005标准建立食品安全管理体系文件,无疑不符合SN/T1443.1-2004标准的要求,更不能满足出口食品卫生注册的要求.     

柴油机油标准的发展及对我国标准制订的启示

介绍了美国API柴油机油标准、美国军用标准、欧洲重负荷柴油机油标准以及我国柴油机油标准的发展现状及特点，并分析了我国直接采用美国API柴油机油标准存在的问题，最后针对这些问题对制订符合我国国情的柴油机油标准的可行性进行了探讨，分析表明制订符合我国国情的柴油机油标准在技术上是可行的。