强子,强子……(小小说)

尽管十几年过去了，那段刻骨铭心的往事依然恍如昨日。 十几年前，我还在外地工作的时候，几年才能有一次的回乡探亲，当然是令人心热的事了。提前个把月，我就写信给家里。临到启程前二三天，突然接到长途电话，电话的那头是大哥的声音“小强子出事了，这该天杀的，偷着把我开的车开出去了，闯下了塌天的大祸，撞死人了……出此逆子，家门不幸啊！”大哥泣不成声。“咱妈的身体本来就挺危险，这么一来，怎么对她老人家说呀！你回来千万别提强子的事。我们在家的哥儿几个对妈撒谎，说强子到外地集训去了，千万别说漏了，咱妈实在经不起刺激…     

酒,是苦涩的(小小说)

一 抽泣声。沉闷,窒息。 “关住门,喝……” 酒喝七成,话说三分,王采购故意缩短舌头:“晋厂长,咱可是老……老交情,酸……” “发!”酒杯飞向玻璃窗,双双玉碎。　　　　二 钟英是氯乙酸车间的操作工,晋志刚是机修车间安装钳工。小两口同厂,工作上生活上能相互照顾,可称是情投意合。 人的感情也怪。按理,新的家庭生活开始,该心满意足了。可是,面对即熟悉又陌生的乱糟糟的设备管道,钟英总觉得少点儿什么。她四处寻找──是的,一双眼睛。 记得和晋志刚旅行结婚登上火车扶梯时,偶一回头,无意中发现那双男性的眼睛浸满泪花,在阳光照射下闪着光。…     

噢,我呀!(小小说)

哦,血! 上班之后,准备去卸钢管。班长分配他去领钢丝绳。 他到了工具库,填好了“工具领取单”。 “ 请到那边架子上取。”工具保管员指着工具架说。 他走到工具架前,伸手就往下拽钢丝绳。 “啊哟!”他急忙缩回了手。手疼。他立即脱下了那副布手套。一滴血从无名指流出滴到地上。 哦,血。皮手套呢?!他想起班长石大海在班前会上,曾诙谐地说过四个字──“血的教育。” 啊,妈呀! 他只是被钢丝刺了一下,算不上工伤。况且,轻伤还不下火线嘛!第二天,他在船舱里装化肥呢! 他看了一下手表,差一刻钟就到下班时间了。他的“脑牌”电子计算机迅速地计算…     

肺殇 (上) 生,毫无质量 死,难求体面

他们曾经挥汗如雨、力大如牛,如今他们有的坐着睡觉、有的跪着死去;生活对他们来说已经没有任何质量可言,他们每天都在等候死神的降临……     

国家精品课程评审指标(本科,2010)

1.评审指标说明（1）本评审指标根据《教育部财政部关于实施高等学校本科教学质量与教学改革工程的意见》（教高〔2007〕1号）、《教育部关于进一步深化本科教学改革全面提高教学质量的若干意见》（教高〔2007〕2号）和《教育部关于启动高等学校教学质量与教学改革工程精品课程建设工作的通知》（教高〔2003〕1号）精神制定。     

Measurement of minimum ignition energies (MIEs) of dust clouds – History,present, future

Nearly 130 years ago Holtzwart and von Meyer (1891) demonstrated by experiments that explosible dust clouds could be ignited by inductive electric sparks. Then more than half a century passed before the publication of the important quantitative research of Boyle and Llewellyn (1950) and Line et al. (1959). They worked with capacitive electric sparks and found that the minimum capacitor energies ½CU² required for ignition of various dust clouds in air decreased substantially when a large series resistance, in the range 10⁴–10⁷ Ω, was introduced in the discharge circuit. When considering that the net energies of the sparks themselves were only of the order of 10% of the ½CU² discharged, the minimum net spark energies required for ignition with a large series resistance were only a few per cent of the net energies required without such a resistance.Line et al. observed that the essential effect of increasing the series resistance, and hence increasing the discharge time of the sparks, was to reduce the disturbance of the dust cloud by the blast wave from the spark. This phenomenon was explored further by Eckhoff (1970, 2017), and subsequently by some simple experiments by Eckhoff and Enstad (1976). Franke (1974, 1977) and Laar (1980) confirmed the additional finding of Line et al. (1959) that the minimum ½CU² for ignition is also substantially reduced by including a series inductance in the discharge circuit, rather than a series resistance. The basic reason is the same as with a large series resistance, viz. increased spark discharge time and hence decreased disturbance of the dust cloud by blast wave from the spark. For this reason inclusion of an appreciable series inductance in the spark discharge circuit is an essential element in current standard MIE test methods.In experiments with spark ignition of transient dust clouds produced by a blast of air in a closed vessel, it is necessary to synchronize the occurrence of the spark with the formation of the dust cloud. The precision required from this type of synchronization is typically of the order of 10 ms, which can be obtained even by mechanical arrangements, such as rapid change of spark gap length, or of the distance between two capacitor plates. The present paper reviews some methods that have been/are being used for achieving adequate synchronization of dust cloud appearance and spark discharge. Some current standard experimental methods for determining MIEs of dust clouds experimentally have also been reviewed. The same applies to some theories of electric-spark ignition of dust clouds.At the end of paper some suggestions for possible future modifications of current standard methods for measuring MIEs of explosible dust clouds are presented. With regard to justifying significant modifications of existing standard methods, the “bottom line” is, as quite often in many connections, that any modifications should be based on realistic cost/benefit evaluations.     

电(气)焊,是众多火灾的元凶

2000年12月16日,广州菠萝庙船厂维修的"金鼎"轮发生火灾,造成3名施工人员死亡.