广钢转炉分厂2号方坯连铸机拉速问题的探讨

通过分析钢水在结晶器内凝固的不均匀性及对钢水结晶的热量平衡计算，讨论连铸中间包钢水温度、结晶器冷却水流量及进出水温差对拉坯速度的影响。     

济南珍珠泉大厦深基坑土钉支护技术

介绍了济南珍珠泉大厦基坑支护工程中，土钉在杂填土及淤泥质土中的应用及相应的处理措施。     

宽带自适应跳频控制器

本文叙述宽带自适应跳频控制器的原理及方案,频率集的配置、自适应跳频拒收门限及频点更新、跳频码序列及同步等。有效地组织宽带自适应跳频系统能避开大部分固定和半固定性质的单频连续波干扰,使得移动卫星通信系统中实现高可靠性的数据传输。     

我国矿业城市实现可持续发展的途径分析

详细分析我国矿业城市可持续发展所面临的社会、经济、资源和生态环境等问题，提出了我国矿业城市应树立可持续发展目标及其内涵，系统分析矿业城市可持续发展的结构和模式，结合我国矿业城市发展存在的主要问题，以矿业城市可持续发展理念为指导，提出我国矿业城市实现可持续发展的途径及其建议。     

护坡排桩兼作地下室外墙承重结构的设计与施工

护坡排桩兼作地下室外墙承重结构的设计与施工刘引兰康忠山张家骥福满楼大酒店位于石家庄市中山东路１８６号，建筑面积约１万ｍ２，地上１０层，地下２层，框架结构，筏形基础。基坑开挖深度－１３．０ｍ，室内外高差０．６ｍ。该工程施工场地狭窄，基坑开挖时无法放坡。...     

地面NFJ耐磨面层施工工艺

1 NFJ简介 NFJ为耐磨、防锈、金属骨料的简称.耐磨面层为铁道部建筑科学研究院研究成果,应用于地面面层具有如下效果:抗压强度高(可达60～70MPa)、耐磨(重量磨耗率＜0.1%)、防锈(金属骨料可露天堆放,被水浸淋后无锈迹,可于使用前才与水泥拌合,地面面层施工后无锈迹)、面层表面光洁、不起砂、不起灰、耐磨寿命≥50年.     

Glomerular tip lesions--a newly described glomerular change

Glomerular tip lesion is a newly described histopathological lesion characterized by a focal and segmental widening of the mesangial matrix without hypercellularity together with capillary dilatation, hyaline exudation on the inside of capillary walls and occurrence of vacuolized cells, localized to the peripheral segments of the glomerular tuft. Clinically, these patients have a pronounced nephrotic syndrome with slightly reduced renal function, but terminal renal failure is seldom seen, even after many years of disorder. Two characteristic case histories are presented. The classification of this lesion among the glomerular disorders is at present uncertain. It may represent a transitional form between minor lesion nephritis and focal segmental sclerosis, a separate disorder, or a functional lesion associated with high proteinuria.     

余热锅炉的发展趋势和欧萨斯锅炉的特点

通过对有色冶金系统余热锅炉的设计和运行之总结，结合欧萨斯锅炉的特点，分析研究了冶金余热锅炉的发展趋势，提出了新的设计思想。     

Absence of tolerance to the aversive stimulus properties of ethanol following oral ethanol self-administration

Aluminum has been reported to inhibit long-term potentiation (LTP) following in vivo administration and decrease glutamate release following in vitro exposure. Because glutamate release is critical for synaptic transmission and the development and maintenance of LTP in the hippocampus, we examined the effects of aluminum chloride (AlCl3) on depolarization-induced glutamate release and LTP in rat hippocampal slices. The effects of AlCl3 on [14C]glutamate release were examined by incubation of slices in depolarizing (56 mM)K+ buffer solution in the absence or presence of 2 mM CaCl2. After 15 min depolarization, AlCl3 (100-1000 microM) did not significantly affect Ca(2+)-dependent [14C]glutamate release from slices, whereas a known Ca2+ channel blocker (100 microM CdCl2) decreased Ca(2+)-dependent [14C]glutamate release by approximately 50%. In contrast to a previous report, acute exposure to AlCl3 was without effect on depolarization-dependent glutamate release. LTP of the population spike (PS) in CA1 of hippocampus was induced by the delivery of stimulus trains to the stratum radiatum. LTP of the PS was observed in both control slices and slices bathed in solution containing 100 microM AlCl3. Neither the magnitude nor longevity (measured up to 1 h posttrain) of LTP distinguished control from aluminum-exposed slices. The lack of sensitivity in rat to the encephalopathic changes induced by aluminum, or methodological differences in exposure conditions may account for the lack of effect of aluminum on in vitro LTP in rat hippocampus.     

潜水钻机在大孔径超深灌注桩施工中的应用

介绍国产ＫＱ—２５００型潜水钻机在济南黄河二桥直径２．０ｍ、深１０２ｍ钻孔灌注桩基础施工中的应用，以及糊钻、泵堵、卡泵等的预防措施和处理办法。