主铁沟的设计优化

本文针对M厂主铁沟的设计情况，模拟计算了其主铁沟的温度场分布，通过与其他主铁沟设计进行比较，优化了主铁沟内衬砌筑及主铁沟尺寸，使沟底及沟梆温度降到安全温度以下，以保证主铁沟在工作时间内的安全稳定。     

高炉主皮带修补新工艺

1高炉主皮带实际使用状况 由于高炉主皮带更换时间长、成本高，因此，在设计时，主皮带使用周期按一代炉龄12a考虑。而在实际工作中，主皮带的机械破损经常发生，其表现形式为皮带表面破损、皮带边沿钢丝裸露、非工作面起皮等，如不及时修补将影响主皮带的正常使用寿命，在我国已发生多起因主皮带损坏而被迫更换的事故，直接影响到高炉的正常生产。     

连铸机冷却喷嘴问距调节装置

一种连铸机冷却喷嘴间距调节装置，属于连铸机技术领域。以实现对喷嘴间距可调，本实用新型包括两条平行的导轨、固定于导轨中央的、分设固定主杆两侧移动主杆、连杆、丝杆、销轴、移动螺母；该固定主杆和移动主杆上开有滑槽，连杆通过销轴两两活动连接，销轴滑设于滑槽中；所说的传动丝杆设置于两移动主杆上，两端套设螺母，螺母固定于两移动主杆上，     

铁东变电所SSZ 9变压器运行性能及控制要点分析

介绍了梅钢公司铁东变电所新更换的SSZ9主变的结构特点和技术参数，通过新旧主变对比，分析了新主变的运行性能，提出了该主变的运行控制要点，以提高设备效率，保证其安全稳定运行。     

凡口铅锌矿深部开拓方案的确定

本文根据凡口铅锌矿深部矿体赋存特点和开采技术条件，对四种可能的开拓方案：主井延深、主斜坡道汽车运输、盲主井和胶带输送机斜井运输方案进行了分析、比较，确定了主井延深方案为最佳开拓方案。     

高碳硅镇静钢中失效夹杂物检测方法的探讨

摘要：采用刚塑性有限元法解析了宽厚板立轧过程中头、尾凹形和边部狗骨的形成规律。轧件长度中心区域立轧时主变形区前、后外端约束始终存在，该区金属进入主变形区前后均没有协调运动，形成的狗骨较高，长度较小。轧件头部区域立轧时主变形区后外端约束始终存在而前外端约束逐渐形成，主变形区内金属易于沿轧件宽度和长度方向流动，轧件头部区域金属离开主变形区后的协调运动导致其头部宽度不足和头部凹形增大。轧件尾部区域立轧时主变形区前外端约束始终存在而后外端约束逐渐消失，主变形区内金属易于沿轧件宽度和长度方向流动，尾部区域金属在进入主变形区之前的协调运动增大了轧件尾部凹形。研究成果可用于指导热轧宽厚板立轧头尾短行程控制轧制和开发新的宽厚板平面形状控制技术。     

水压机主柱塞导向套内径尺寸的确定

在对从英国引进的1000t立式反向本压机的大修中，应用弹性理论来确定水压机主柱塞的导向套内径尺寸，有效地保证了导向套与主柱塞的装配精度，主缸密封效果佳，工作寿命长，而且大大缩短了维修工时。     

多绳摩擦式提升机新主绳长度的确定

针对多绳提升机更换主绳(首绳)时新主绳长度难以确定的问题，分析影响新主绳伸长的主要因素，并介绍新主绳长度的确定及计算方法。     

冷连轧机主传动系统扭振分析研究

针对某1450mm冷连轧机主传动系统进行参数化建模，计算固有频率、主振型、扭矩放大系数，采用灵敏度分析量化了主传动系统各部件的转动惯量和扭转刚度对固有频率的影响，并通过现场实测数据对转动惯量进行验证。     

某钢铁厂1166m^3高炉主皮带设计

上料主皮带是高炉正常运行的主要设备之一，其运行正常与否，直接影响高炉的生产。以某钢铁厂1166m^3高炉主皮带设计为例，着重论述高炉主皮带设计中必须保证输送机运行可靠，控制操作方便的同时，需注意安全措施、备用、检修手段等。     

浅析立磨磨辊密封的设计与选用

介绍了立磨磨辊密封的作用与型式,以及磨辊油封的基本常识,重点提出了有关磨辊油封泄漏的一些因素,并介绍了立磨磨辊密封的典型设计及一些发展动态。     

G6—35型汽轮机漏油、漏汽原因分析及改进措施

分析了汽轮机油封漏油、汽封漏汽的原因,提出了解决措施,实践证明了取得了良好效果。     

发动机曲轴油封接触面磨损的处理

本文详细地介绍了在发动机修理过程中,遇到曲轴的油封接触表面出现过度磨损情况,导致发动机运行时存在不同程度的润滑油泄漏故障,通过分析不同的曲轴油封结构及磨损程度,采取了直接修磨、油封错位安装、安装耐磨套等方法,经过跟踪发动机修理运行使用情况,效果良好。     

液压凿岩机冲击机构密封的设计及使用

液压凿岩机冲击锤属高压、高频工作机构，其密封性能直接影响凿岩机的工作效率、能量消耗和作业的稳定性。本文介绍的三段密封方式，即采用间隙－低压回油槽－密封圈三段密封，效果很好。     

Effect of marine oils supplementation on coagulation and cellular activation in whole blood

A study was performed to explore the effects of supplemental intake of various marine oils known to be part of the Eskimo diet. Healthy men and women (134) were randomly selected to consume 15 mL/d of oil from blubber of seal, cod liver, seal/cod liver, blubber of Minke whale, or no oil for ten weeks. Total cholesterol was unchanged in the oil groups, whereas high density lipoprotein cholesterol increased 7% in the seal/cod liver oil (CLO) group (P < 0.05) and 11% in the whale oil group (P < 0.005). Triacylglycerol was significantly reduced in the CLO group only. The concentration of prothrombin fragment 1 + 2 was reduced 25% (P < 0.05) after whale oil supplementation. No change in fibrinogen or factor VIIc was detected. Tumor necrosis factor generation in lipopolysaccharide (LPS)-stimulated blood was 30% reduced after whale oil (P < 0.05), but was unaffected by intake of seal or CLO. The LPS-induced tissue factor activity in monocytes was reduced to a significant degree only in the seal/CLO group (34%) and whale oil group (35%) (P < 0.05). The most dramatic change in thromboxane B2 in LPS-stimulated blood was seen after whale oil intake with 44% reduction (P < 0.01). Supplementation of a regular diet with a combination of seal oil and CLO and especially with whale oil seems to have beneficial effects on several products thought to be associated with cardiovascular and thrombotic diseases.     

济钢4#板坯连铸机液压缸密封结构的改进

对济钢第一炼钢厂 4#超低头板坯连铸机扇形段拉紧油缸密封结构进行改进 ,采用新型 V形组合圈代替原洪格尔密封圈 ,有效地解决了油缸活塞杆漏油问题 ,提高了液压缸使用寿命 ,稳定了生产     

净化系统中排烟机油封结构的优化与应用

通过对排烟机常见的轴承箱漏油原因的分析,指出漏油原因,提出对排烟机原油封进行改造,开发出一种防止排烟机漏油的机械磁力油封的新结构,同时介绍研制的过程及应用情况。     

圆锥破碎机润滑系统中运动部件密封问题的探讨

对圆锥破碎机润滑系统中运动部件普遍存在的密封问题进行了探讨,提出了采用机械密封取代橡胶密封的改造措施;有效地解决了橡胶密封件受压变形、润滑油泄漏及被污染的问题。实践证明,机械密封消除了因润滑系统中运动部件密封问题而出现的常见故障,提高了生产作业率,降低了生产成本,为连续稳定生产取得良好的经济技术指标创造了条件。     

Phage-displayed peptide libraries

The influence of various dietary marine oils and olive oil on fatty acid composition of serum and platelets and effects on platelets and serum lipids were investigated as part of an extensive study of the effects of these oils on parameters associated with cardiovascular/thrombotic diseases. Healthy volunteers (266) consumed 15 mL/d of cod liver oil (CLO); whale blubber oil (refined or unrefined); mixtures of seal blubber oil and CLO; or olive oil/CLO for 12 wk. In the CLO, seal oil/CLO, and whale oil groups, serum levels of eicosapentaenoic acid (EPA) were increased. In platelets, EPA was increased in the CLO, seal/CLO, and olive oil/CLO groups. The localization of n-3 polyunsaturated fatty acids in the triacylglycerols did not seem to influence their absorption. Intake of oleic acid is poorly reflected in serum and platelets. No significant differences in triacylglycerols (TG), total cholesterol, or high density lipoprotein cholesterol were observed, even though TG were reduced in the CLO, CLO/seal oil, and whale oil groups. Mean platelet volume increased significantly in both whale oil groups and the CLO/olive oil group. Platelet count was significantly reduced in the refined whale oil group only. Lipopolysaccharide-stimulated blood tended to generate less thromboxane B2 in CLO, CLO/seal, and CLO/olive groups. The whale oils tended to reduce in vivo release of beta-thromboglobulin. In conclusion, intake of various marine oils causes changes in platelet membranes that are favorably antithrombotic. The combination of CLO and olive oil may produce better effects than these oils given separately. The changes in platelet function are directly associated with alterations of fatty acid composition in platelet membranes.     

稀油密封干式煤气柜运行的防冻措施

对稀油密封干式煤气柜在北方冬季运行容易冻的问题及原因进行了详细的分析,提出了两种防冻方法：一是煤气柜底部油沟加热,二是煤气柜活塞油槽加热。