钢筋混凝土烟囱有井架整体爬模施工技术

本文主要 根 据三 明 钢铁 厂130m~2 烧 结机 改造 工 程 60m 和 100m 烟 囱 的施 工实 例 ,详 细介 绍 了钢 筋 混凝 土烟 囱 有井架 整 体爬 模的 施 工新 方 法,并 取 得了 良好 的 效果 。     

HfOxNy的场发射特性

用直流溅射和高温退火相结合的方法制备了HfOxNy薄膜并测试了其场发射性能,发现其具有较低的开启电场、较大的发射电流密度以及很好的发射稳定性.高压"锻炼"对提高HfOxNy场发射性能起着关键作用,这与高压"锻炼"下薄膜内部结构和表面性质的改变有关.对场发射机理的研究表明,HfOxNy的场发射符合经典的FN隧穿理论.     

Time-Space Label Switching Protocol (TSL-SP)—A New Paradigm of Network Resource Assignment

In this paper we propose a new protocol called time-space label switching protocol (TSL-SP) in optical burst switching (OBS), and define the terms time-space label (TSL) and time-space routing (TSR). An important concept of response time is introduced in the time label mechanism. The TSL-SP is a new technology that can quickly and efficiently forward data with a label on the optical networks. A two-dimension label switched path (TD-LSP) can be set up, that is maintained and deleted by the TSL-SP. For clearly illuminating the operation principles of the TSL-SP, we propose a new approach of orthogonal time-space coordinates in which the vertical coordinate is the space label and the horizontal coordinate is the time label. The proposed TD-LSP can dramatically reduce the routing failure probability and greatly improve the link network efficiency compared with other signaling protocols. Moreover, we define the time-space label control plane that can achieve the higher efficiency. When the TSL-SP is applied to networks, switching performance can be improved by two orders compared to the switching performance with the conventional OBS signaling protocols. The fundamental goal of TSL-SP is to band the signaling and routing functions together closely. Also, the TSL-SP can reduce the complexity of the network, support automatic service offering, and provide traffic engineering.     

DDS技术在数字激光相位测距仪中的应用

本文介绍了直接数字合成(DDS)技术在激光相位测距仪中的应用。使用该技术研制的数字激光相位测距仪具有操作简便、携带方便、性能可靠的特点，测相精度优于干分之一。     

低强度激光血管内照射对海洛因戒断综合征的疗效观察

对于毒瘾戒断综合症的治疗一般采用强行戒断或逐步撤药等方法 ,但患者非常痛苦 ,且复吸率较高。为了观察低强度He -Ne激光对戒断症状的抑制作用 ,本文用低强度激光血管内照射疗法对 3 0例吸毒戒断综合征患者进行了治疗 ,并与对照组比较。结果证明 :实验组疗效明显优于对照组 (P <0 .0 1) ,为进一步的临床应用提供了临床依据。     

成形工艺对快速凝固Al—Cu—Mg合金组织和性能的影响

采用自制离心雾化装置制取了快速凝固LY12硬铝合金粉末,研究了以该粉末制成的真空热压件和挤压丝材的组织和性能。结果表明,所得粉末为泪滴状,其显微组织为树枝状晶和胞状晶。真空热压件密度高时所对应的强度高。450℃、10min、150MPa为较合理的工艺,此时粉末颗粒间结合密实,晶粒尺寸没有明显改变。在500℃热挤压时,挤压丝的组织已发生了再结晶,晶粒尺寸仍较细小。挤压丝材的抗拉强度达460MPa,其断口为韧窝状,韧窝尺寸小于3μm,且分布均匀。     

STRUCTURE REPRESENTATION OF THE SPECIFIC FRACTIONS FROM PINGSHUO COAL

Basic data of four fractions, PM₁, PM₆, PM₇and PM₈, derived from Pingshuo bituminous coal were obtained by ultimate analyses, mean molecular weight measure, GC/MS, ¹³C-NM R, ¹H-NM R and FTIR technigues. A method of calculating the average molecular parameters of the fractions is introduced. Based on the calculated parameters, the molecular structure models of the fractions of PM₆, PM;and PM₈are constructed. Significant structural information about the saturated hydrocarbon and aromatic hydrocarbon with heteroatom groups is given also.     

合成基础油的性能与应用

综述了聚醚、合成烃、酯类油、磷酸酯、硅油及氟油等合成基础油的性能及其应用情况。     

A Structured Temporal Logic Language:XYZ/SE

In order to enhance the readability and to simplify the verification of temporal logic programs in the XYZ system,we propose a structured temporal logic language called XYZ/SE,based on XYZ/BE which is the basis language of the XYZ system.A set of proof rules are given and proved to be sound and adequate for proving the partial correctness of XYZ/SE programs in a compositional way.Moreover,we show that every XYZ/BE program can be transformed into an equivalent XYZ/SE program.So we have developed a general conpositional verification method in the XYZ system concerning the sequential case.     

高精度节能型电力稳压器

分析了现有交流稳压器的特点和不足,提出了新一代数控稳压器的理论和实际无均差系统的方法,给出了超高精度无均差稳压系统的实现方法.经全乐科技公司模拟试验,获得了很好的结果.市电220.4 V和220.5 V,试验样机采用3 V、9 V和27 V这3个变压器,已达到优于±1%的精度,符合大部分负载的实际需要,经用户单位试用半年,效果非常满意.