Fire performance of wood (Pinus radiata) treated with fire retardants and a wood preservative

In this work, we co‐formulated an oil‐borne copper naphthenate/permethrin wood preservative system with synthetic polymer‐based fire‐retardant additives prior to the impregnation of Pinus radiata sapwood. We evaluated what effect, if any, the preservative had upon the fire performance properties of the fire retardants and whether the fire retardants impacted on the fungicidal and termiticidal efficacy of the preservative. The fire retardants included halogenated and phosphorus‐based systems. A mass loss calorimeter, in conjunction with a thermopile, was used to measure the time to ignition and the peak heat release rate (PHRR) from which the fire performance index (FPI) was determined. The preservative properties were evaluated using termite and soil‐block decay bioassays. In summary, we found that the rate of fire growth was reduced when the fire retardants were used in combination with the wood preservative. We also found that the PHRR was a better determinant of fire performance than the FPI. The performance of the wood preservative was enhanced against fungal decay and termite attack when used in combination with the fire retardants. The fire retardants also demonstrated some wood preservative properties of their own. Copyright © 2008 John Wiley & Sons, Ltd.     

钢水化学热法升温技术的研究

依据热力学原理，用计算机计算了某些元素与合金的氧化热效应。综述了各种上化学热法升温技术的应用效果。分析讨论了发热剂的类型，升温速度和热效率问题等。     

Design and Characterization of the CLIMPAQ,Chamber for Laboratory Investigations of Materials,Pollution and Air Quality*

A test chamber has been developed in order to provide a small and simple emission testing facility capable of testing construction products in a climate where the important climatic parameters such as temperature, ventilation rate and air velocity can be varied independently around typical indoor values. The test chamber CLIMPAQ is made of panes of window glass. Other main surface materials are stainless steel and eloxated aluminium. The chamber has a volume of 50.9 litres and is designed to meet the requirements for quantifying air pollution. In this investigation human subjects acted as air pollution judges, and chemical characterization of the air pollution was carried out. Carpet, linoleum, wall paint and seal- ant were tested simultaneously in the CLIMPAQ and in four other chambers ranging from a full-scale chamber of 28 m³ to a field and laboratory emission cell of 3.5· 10^?5m³. Product ranking is the same in all chambers for the sensory measurements. Emission rates based on sensory measurements differ for all products less than 100 % except for tests in a 3-litre chamber where emission rates were higher. Chemical measurements differ up to approximately 10 times for the same product in different chambers. Deviations appear to be the result of different environmental parameters in the various chambers. Low air concentrations or high specific ventilation rates seem to increase emissions, while differences in air velocities and sink properties may also be the cause of differences in emission rates.     

传感器可靠性技术—传感器可靠性特征量

介绍已知试验数据如何计算可靠性特征量的点估计和区间估计     

二流量试井工艺及资料解释分析方法

描述了二流量试井工艺的实现，从常规分析和双对数曲线拟合两上方面，给出了二流量试井的资料解释分析方法，分析认为二流量试井同样可以计算出正常关井测压力恢复（或压力降落）资料所解释的油藏及流体参数。这种试井方法不但可以减少因正常关井测压对产油量和注水量的影响，而且可以减缓因突然关、开井造成的套管变形或损坏。实践证明，该试井技术方法具有较好的经济效益和应用前景。     

提高炮采工作面块煤率的爆破技术

通过小规模爆破试验，用线性回归方法对块煤进行筛分分析，指出影响炮采工作面块煤率的因素是炸药性能、装药结构、爆破参数、起爆顺序、时间间隔等。     

PDC钻头在胜利油田深井钻井中的应用

胜利油田为提高深井钻井速度，试验应用了PDC钻头，结果表明，深井钻井应用PDC钻头可大幅度提高机械钻速，缩短建井周期，降低钻井成本，经济效益明显。通过大量的现场试验，扩大了PDC钻头在胜利油田的使用范围，并取得很好的效果，初步形成了PDC钻头推广应用区域模式。详细介绍了胜利油田不适用PDC钻头钻进的地层岩性，给出了钻头选型及钻井参数选择原则，并对应用效果进行了分析。     

时效处理对 TiNi 合金相变与性能的影响

通过用ＴＥＭ等方法研究热处理制度（固溶处理、时效处理）对ＴｉＮｉ合金相变组织和性能的影响，找出了最佳热处理制度。结果表明，在４５０～５００℃进行时效处理，Ｔｉ－５０．８ａｔ％Ｎｉ的合金出现了大量的Ｔｉ３Ｎｉ４相，且恢复率最高。     

Bandwidth allocation algorithms for weighted maximum rate constrained link sharing policy

This paper addresses the problem of bandwidth allocation under the weighted maximum rate constrained link sharing policy and proves a key theory in the condition of allocation termination. We propose several algorithms with various worst-case and average-case time complexities, and evaluate their computation elapse times.     

高速连续数据记录系统中双页缓存的设计和实现

在高速连续数据记录系统中，存储设备需要速度匹配单元来实现高速连续数据记录，文章讨论了双页缓存在高速连续记录系统中的作用，并以实际开发的记录系统为例，详细介绍了双页缓存的设计和实现。