控轧技术在H型钢生产中的应用

根据钢板的控轧经验，结合H型钢轧制的特点分析控轧在轧制中运用的具体问题，制定H型钢控轧工艺方案。介绍了实际应用情况，并提出改进的措施。     

受控离散事件过程（CDEP）的一种代数分析方法

本文在文［１～３］的基础上，提出了受控离散事件过程（ＣＤＥＰ）的一种代数分析方法，弥补了Ｒａｍａｄｇｅ和Ｗｏｎｈａｍ［１～３］的理论对具体系统的应用缺乏可操作性的缺陷，使得对ＣＤＥＰ动态过程的分析变得更为直观，同时也使控制器的设计过程更具可操作性．     

利用马铃薯淀粉下脚液生产饮料工艺的研究

本实验尝试从马铃薯中提取蛋白质等成份，并适当添加姜汁，制成一种新型饮料，对饮料生产的工艺条件作了详细探讨，成功地解决了马铃薯褐变及沉淀等问题，确定了最佳配方及工艺。     

反向回转双激振器振动机控制同步的理论研究

本文对两激振器作反向回转的振动机控制同步进行了理论研究和计算机仿真。推导出了考虑质心偏移时两主轴的转矩差方程，在此基础上建立了控制系统的数学模型，设计了具有鲁棒性的非线性变结构滑模控制器．仿真结果表明，控制同步不仅可以消除由质心偏移、电机特性差等原因引起的稳态相位差，同时还能大大降低瞬态相位差，从而使机体的振动方向保持不变，减小起、制动过程中机体的摇摆振动．     

PREPARATION OF BONE TUMOR THERAPEUTIC RADIOPHARMACEUTICALS ^153 Sm—EDTMP

ＰＲＥＰＡＲＡＴＩＯＮ　ＯＦ　ＢＯＮＥ　ＴＵＭＯＲ　ＴＨＥＲＡＰＥＵＴＩＣ　ＲＡＤＩＯＰＨＡＲＭＡＣＥＵＴＩＣＡＬＳ　~（１５３）Ｓｍ－ＥＤＴＭＰＬｕｏＳｈｕｎｚｈｏｎｇ（罗顺忠）；ＰｕＭａｎｆｅｉ（蒲满飞）；ＱｉａｏＪｉａｎ（谯健）；ＬｉｕＺｈｏｎ?..     

Storage Stability of Antioxidant-Washed Myofibrils From Chicken White and Red Muscle

Oxidation and gel-forming ability of chicken white (breast) and red (leg) muscle myofibrillar proteins during storage at 0°C were examined. Breast myofibril gels exhibited greater shear moduli than leg myofibril gels throughout 8 days storage. Shear moduli of both breast and leg gels in the intermediate temperature zone (45–55°C) decreased during storage, but at >55°C, they either increased or remained unchanged. Lipid oxidation was inhibited by washing myofibrils with antioxidants propyl gal-late, ascorbate, and tripolyphosphate. However, these antioxidants did not affect the content of protein carbonyls, and only slightly decreased the amine content during storage. Storage affected the kinetic process of myofibril gelation independently of antioxidant treatments.     

Advancing controlled release packaging through smart blending

Researchers from Rutgers University and Clemson University have collaborated to develop a concept of using smart blending to generate functional packaging films for the controlled release of active compounds such as antimicrobials, antioxidants and flavour compounds to extend the shelf‐life of food. In this paper, literature results are reviewed to justify the significance of controlled release packaging (CRP) and the research gaps for further development are identified. A major research gap is the lack of packaging materials that can provide the release of active compounds at rates suitable for a wide range of food packaging applications. Smart blending is a promising technology for bridging this research gap. To fully realize the potentials of smart blending, a systematic approach for developing CRP using smart blending is also presented. Copyright © 2005 John Wiley & Sons, Ltd.     

Trypsin inhibitor activity of soybean as affected by genotype and fertilisation

The presence of protease inhibitors in soybean prohibits the utilisation of the raw beans for food and feed. However, little information is available about environmental influences and the effects of nitrogen and sulphur supply on the antinutritional constituents of soybean. As these factors may influence protease inhibitors, soybean genotypes segregated according to the presence or absence of the Kunitz trypsin inhibitor have been evaluated for trypsin inhibitor activity (TIA) in field trials. TIA was affected significantly by environment (geographical location), fertilisation treatment and genotype. Environmental means of TIA were between 69.5 and 104.8 mg g^?1. Nitrogen application, which caused an increase in seed protein content, resulted in a reduction in TIA by about 15% as compared with the control. Remarkably, simultaneous application of nitrogen and sulphur in the form of ammonium sulphate had a similar reductive effect on TIA to that of nitrogen application alone, although soybean protease inhibitors are rich in sulphur amino acids. Significant genetic variation in TIA was found both within the genotype class with the Kunitz inhibitor present as well as within the class lacking this inhibitor. The results suggest that TIA of soybean may be modified considerably by genetic improvement and appropriate agronomic management. Copyright © 2003 Society of Chemical Industry     

Effect of Cerium on Expression and Activity of MMP-9 from Human Carcinoma of Bladder Cell Line

Rareearthshaveledtowidespreadinterestsinlifescience ,whilethescientistsdoresearchesdeeplyinmedicalandbiochemicalfields .Rareearthsplaypotentialrolesininhibitingcancer ,andalargenum berofscientistsdedicatethemselvestoit[1] .Thema trixmetalloproteinases (MMPs)areafamilyofatleast1 7humanzinc dependentendopeptidasesthatareca pableofdegradingalmostallextracellularmatrix(ECM)components .Theyareessentialinmanyphys iologicalprocessesandseveralpathologicalconditions ,suchastumorprogression .MMPsare…