抗窄带干扰宽带中频数字接收机的设计与实现

讨论了存在强干扰条件下MSK中频数字接收机的频域窄带干扰抑制、伪码快速捕获、MSK相干解调等实现方法。具体实现中提出了基于功率估计的码捕获门限实时调整方案，解决了动态干扰条件下的快速码捕获问题。基于FPGA DSP硬件设计和软件可编程数字信号处理算法，接收机具有较强的适应性和稳定性。     

论工程量清单计价

文章简要介绍了以工程量清单计价的必要性、形式、特点及与定额计价的区别。     

VSR调节技术在煤气加压机上的应用及分析

叙述了VSR(The Variable Spin Regulator）调节技术在南钢气体供应公司成功应用的实例。实际运行证明，VSR调节技术具有调节灵敏、抗喘、节能、软启动等方面的技术优势。文中还简明地阐述了VSR调节技术的原理并分析比较了液偶及变频调节。     

An Algorithm For Selecting a Generator of Z_p

How to select a generator of Zp* is an important problem in cryptographic applications, where p is an odd prime. In this paper, we mainly consider the especial case that p is a safe prime, and give an algorithm for selecting a generator of Zp*,and find all generators of Zp* , where p is a safe prime. Our algorithm is more faster than the algorithm in [1]. Based on the proposed algorithm, one could find all generators of Zp* as well, where p is a perfect prime.     

中国石油石蜡基橡胶油系列产品在橡胶工业中的应用

中国石油研制生产的健康环保型石蜡基橡胶填充油系列产品，具有浅颜色、低芳烃、高饱和烃含量等特征，是中国石油的优质特色产品。该系列产品在国内橡胶行业中已得到广泛应用，其中，KP6025、KP6030石蜡基橡胶油通过了2001年中国石油润滑油公司的鉴定，该产品的研制成功，填补了这一领域的国内空白，产品性能优于国外同类产品，为国内橡胶企业的产品结构调整创造了条件，推动了我国橡胶产业向国际先进水平的发展，具有重大的经济和社会效益。主要综述了中国石油石蜡基橡胶油的应用与评价情况。     

有环境约束时完成一族跟踪任务的力控制

本文为工业机器人提出了一种极点配置控制法，这种控制方法的优点有：一是它的积分作用消除了机器人的微小扰动和稳态误差；二是能任意设置系统的极点，因此能保证闭环系统的稳定性和规定状态变量的暂态响应；三是加入了加速度反馈，抑制了由电枢电感所引起的机械手的振动，最后，给出了ＰＵＭＡ５６２机器人的计算机仿真和实验结果验证了此控制法的有效性。     

Preparation and Properties of Sintering Additives Coated Si3N4 from Heterogeneous Nucleation Processing

The sintering additives such as Al2O3 and /or Y2O3 were coated on the surfaces of Si3N4 particles via heterogeneous nucleation processing using a buffered pH solution as the precipitation reagent .They nucleated and grew only on the surfaces of Si3N4 and did not form sol particles in solution by TEM observation .The isoelectric point(IEP) of coated Si3N4 was different from that of as-received Si3N4.The IEP of Al(OH)3-coated Si3N4 occurred at pH8.4, which is close to that of alumina .When Al(OH)3-coated Si3N4 particles were coated with Y(OH)3,the IEP of coated Si3N4 powder shifted from pH8.4 to pH9.2 ,similar to that of yttria.In addition ,the rheological data showed that Al2O3 and /or Y2O3 coated Si3N4 suspension is nearly Newtonian and that added Si3N4 suspension shows a shear rate thinning behavior.     

超声波在金属凝固中的应用与发展

简要介绍了超声波及其基本特性，综述了高能超声对金属凝固过程作用方面的研究和应用状况，提出超声处理是改善金属凝固组织，提高力学性能的有效方法，并对21世纪超声凝固细晶技术的前景进行了展望。     

磨损自补偿添加剂在成品油中的摩擦学效应

利用四球试验机考察了二聚酸－3－氯－2－羟基丙单酯（DAE）在4种成品油中的摩擦学性能。试验结果表明，DAE添加剂在L－HM68液压油和L－DAB100空压机油中具有良好的适应性，使其承载能力增强，摩擦系数降低及耐磨性增强；DAE在L－CKE涡轮蜗杆油中使耐磨性增强；DAE在L－CKC150齿轮油中虽使承载能力提高，减磨性增强，但有使耐磨性减小的趋势，说明DAE在不同的油中有不同的性能。     

Extraction of Anthocyanin Pigments from Purple Sunflower Hulls

The anthocyanin pigments in hulls of purple sunflower seeds were extracted using three solvent systems, 50:1:49 ethanol-acetic acid-water (EAW), 0.01M acetic acid (AAc), or water containing SO₂. Solvent, extraction time, size of ground hulls, pH of extracting solvent, hulls/solvent ratio, and concentration of SO₂ in water, were investigated. All were significant factors affecting yield of extracted anthocyanins. EAW and SO₂ were more effective extractants than AAc. Optimum conditions from response surface optimization for the extraction with sulphurous water were: SO₂ at 200 mg/L, hull size 20 mesh, extraction time 5 min at 22°C, and solvent/hulls ratio = 20.