Harvesting small trees and forest residues

Eight countries collaborated and shared technical information on the harvesting of small trees and forest residues in a three year program. Proceedings and reports from workshops and reviews are summarized in a review of activities and harvesting systems of the participating countries. Four databases were developed for harvesting and transportation of these materials.     

提高油田集输系统可靠性的研究

应用现代可靠性理论,从设计、工艺、技术等方面对油田集输系统进行了可靠性探讨,提出了增强系统可靠性的措施。     

原油集输太阳能加热节能技术的应用

在油田的采油、集输等过程中,传统技术使用燃烧煤、油、天然气和电加热方法来实现原油加热,造成大量的能源消耗和严重的环境污染。原油集输太阳能加热计算机控制节能系统,为油田的采油、集输开辟了节能新途径。该系统不仅具有自动化、智能化的特点,而且节能效果显著,实际节气率超过40%。文章介绍了该系统的结构、工作原理、功能特点以及应用效果。     

Application of Code Approach for Emergency Evacuation in a Rail Station

This paper presents an emergency evacuation analysis during a mid-platform train fire in an underground rail station. A time-based evacuation scenario is developed taking into account the stairway inaccessibility due to smoke blockage. The calculation approach in NFPA 130 is then applied to a parametric study of this time-based scenario and its reliability is examined using a micro-simulation model. Both methods give consistent predictions of the exiting times. The results demonstrate that with the division of the station into two zones, the exiting time could not meet the code requirements, whereas it does meet the required exiting time without the division. Such division is due to smoke blockage and creates an uneven ratio of the occupant load to the available exiting capacity. This shows that appropriate consideration of the fire and smoke effects is important for station egress evaluation. Other issues such as the fire growth rate and the pre-evacuation time are also discussed.     

重轨钢非铝脱氧工艺研究

介绍了攀钢重轨钢非铝脱氧工艺，在满足钢中脆性夹杂物控制的前提下，采取“预脱氧＋终脱氧”的工艺，达到钢液脱氧良好，钢轨内部质量大幅提高，钢轨T[O],[Al]及氧化物夹杂评级完全满足200km/h高速铁路钢轨标准的要求。     

中原边际小断块油田油气集输工艺配套技术探索

介绍了中原边际小断块油田开发建设以来几种油气集输工艺配套技术的成功应用，并从节能降耗、工艺合理匹配、提高系统效率等方面阐述了其他适于边际小断块油田油气集输工艺的配套技术。     

热浸镀铝护栏的生产工艺研究

热浸镀铝护栏的生产通过除油→除锈→烘干→热浸镀→精整等过程完成，最佳热浸镀温度为７３０～７５０℃，保温时间３～８ｍｉｎ，护栏提升速度１ｍ／ｓ     

缝纫机和导向机在BOPP二次套装上的应用

用户工艺要求树脂BOPP无杂质，一次包装在运输和使用中都会不同程度带进一些污物。人工二次套装费用高，极易形成二次污染。应用缝纫机、导向机、一次性完成二次套装，解决了人工二次套装解决不了的问题，具有很高经济效益和社会效益。     

SISAK快速化学分离装置的建立

SISAK(Short-lived Isotopes Studies by the AKUFVE technique)技术是目前使用最广泛的快速化学分离方法之一,主要应用在短寿命核素的分离和鉴别、超重元素的人工合成以及化学性质研究等方面的工作中.本文简单地叙述了SISAK技术的流程、原理和发展现状,介绍了自行建立的国内第一套基于SISAK技术的快速化学分离装置,并通过从裂变产物中分离短寿命核素这一实例验证了SISAK技术在快速化学分离中的优越性.     

车用乙醇汽油调合及储运问题的探讨

简要介绍了车用乙醇汽油的组成、性质 ,阐述了车用乙醇汽油调合及储运设施的工艺设计思想 ,以及车用乙醇汽油储运设施设计中应注意的问题。