轧辊接触模拟分析中的相似准则研究

用π理论导出了辊类构件接触问题的相似准则，指出了在三维光弹性的模拟过程中由于相似关系Kμ≠1所产生的转换误差及修正后的准则的精确表达。据此，对宝钢1420双平整冷轧机轧辊的接触应力进行了分析。     

1998年嫩江洪水对大庆输油管道的淹浸调查分析

１９９８年嫩江洪水淹没了大庆太阳升站段的３２．１ｋｍ双线输油管道。本文概述了最高水位期和冬季冰冻期的淹浸范围。通过冰冻期管堤冻结、冻胀和温度场的计算分析，认为受淹区冬季不会出现管道的冻胀破坏，但管道温度散失严重。并提出太阳升站要增加燃油量和初冬期应采取保护措施等建议     

Microcalorimetric study of the toxic effect of selenium on the mitochondrial metabolism of Cyprinus carpio liver

Brief periods of global cerebral ischemia are known to produce characteristic patterns of neuronal injury both in human studies and in experimental animal models. Ischemic damage to vulnerable areas such as the CA1 sector of the hippocampus is thought to result from excitotoxic amino acid neurotransmission. The objective of this study was to determine the ability of a novel sodium channel blocking compound, zonisamide, to reduce neuronal damage by preventing the ischemia-associated accumulation of extracellular glutamate. Using a gerbil model, animals were subjected to 5 min ischemic insults. Both pre- and post-ischemic drug administration (zonisamide 150 mg/kg) were studied. Histological brain sections were prepared using a silver stain at 7 and 28 days post ischemia. The animals sacrificed at 28 days also underwent behavioral testing using a modified Morris water maze. In vivo microdialysis was performed on a separate group of animals in order to determine the patterns of ischemia-induced glutamate accumulation in the CA1 sector of the hippocampus. Pyramidal cell damage scores in the CA1 region of the hippocampus were significantly reduced in animals pre-treated with zonisamide compared to saline-treated controls, both at 7 days (drug pre-treated: 0.812 +/- 0.28, n = 8; controls: 1.625 +/- 0.24, n = 8; *P < 0.05) and 28 (drug pre-treated: 0.833 +/- 0.22, n = 12; controls: 1.955 +/- 0.26, n = 11; **P < 0.01) days post ischemia. However, animals receiving zonisamide post-treatment did not display significant differences from controls. Behavioral studies also showed significant preservation of function in drug-treated animals. Microdialysis studies confirmed a reduction in glutamate release in drug-treated animals compared to saline-treated controls. Our data suggest that zonisamide is effective in reducing neuronal damage by a mechanism involving decreased ischemia-induced extracellular glutamate accumulation and interruption of excitotoxic pathways.     

5～30MHz高频磁探针的研制

描述了高频磁探针的设计，制造以及标定方法和技术。     

碱金属氧化物掺杂 对TiO2-V2O5系湿敏陶瓷的影响 ’

本文研究了碱金属氧化物掺杂对TiO2-V2O5系湿敏陶瓷的影响．结果表明：掺入碱金属氧化物和烧结温度等将影响材料的微结构及湿敏性能，其中含K2O材料有较高的湿敏性能．元件经聚合正硅酸酯溶液浸泡在50℃，85％RH下老化50h，提高了元件的湿度灵敏度和稳定性。     

高钙油田污水复合防垢剂

以某种工业废水为主要原料，复配以表面活性剂、有机膦酸以及聚马来酸酐，在室内制得了价廉高效的防垢剂ＺＨ－１和ＺＨ－２，在模拟南疆沙参２井高钙（６０００ｍｇ／ｌ）、高矿化度（１．３×１０￣５ｍｇ／ｌ）采出水中测得防垢率达９５％以上。该二种剂可耐受Ｃａ￣（２＋）８０００ｍｇ／ｌ、ＨＣＯ＿３１０００ｍｇ／ｌ，使用ｐＨ范围≤６。     

天津国展中心扩建工程钢管桁架制作过程质量控制

介绍了大跨度空间三维管桁架的制作过程以及对其尺寸精度和焊接的质量控制。     

沥青加铺层改造机场旧水泥跑道防裂措施试验研究

机场旧水泥混凝土跑道采用沥青加铺层改造，是解决老机场跑道损坏问题的有效途径，但如何延缓与防治反射裂缝是突出的问题，为此，利用大型反射裂缝试验设备在室内进行足尺板试验，研究分析了几种常用防裂层抗反射裂缝的能力，以寻求最佳的防裂措施，为沥青加铺层的设计与施工提供依据。     

A study on yttrium doping in lead tungstate crystals

In this paper we present results of a study on the yttrium doping in lead tungstate crystals. The crystal growth by modified Bridgman method is described. Results of trace analysis on raw materials and crystals are presented. The segregation coefficient of yttrium ions in lead tungstate crystals was determined. The scintillation emission and longitudinal transmittance spectra, light output, decay kinetics, light response uniformity and radiation damage were measured. It is found that yttrium doping suppresses slow scintillation component and improves radiation hardness of lead tungstate crystals.