优化结构有序建设积极促进橡胶工业全面协调和可持续发展

改革开放以来,我国橡胶工业的发展速度是前所未有的,其间有许多成功的经验,特别是入世后,在上世纪末全行业整体亏损的不利情况下,大家认识一致,认真对待,风雨同舟,趋利避害,经受住了考验,不仅行业经济全面复苏,而且取得新的发展。当前,全行业面对的是新一轮的竞争,而且更为激烈     

我的台湾工艺之旅

两期"台湾工艺之旅"圆满结束。对于文化艺术,无论是走马观花还是深度阅读,各人经历不同感悟也会不一样。你心目中的台湾,是什么样子呢?8天的旅程,累,却幸福着。忘不了,太鲁阁天然大理石岩的鬼斧神工,忘不了,清晨日月潭散发的柔美光辉,忘不了,黄安福大师表演玻璃技艺洒下的滴滴汗珠,忘不了,粘碧华大师的艺术之家和她亲切的笑容,忘不了,汉声巷黄永松老师挥手作别时眼里的殷殷期盼,忘不了,台北世界设计展上将书法创意延伸的"妙法自然"忘不了,中华手工电台带给我们的欢声和笑语,忘不了……黄永松老师说,这一代人需要觉醒,但觉醒的方向不要错,要回到文化的母土。或许你已留意到,     

半隐于郊 艺术之调

柳林小径深处,一扇木门掩映的白色建筑,即是王功新林天苗夫妇在宋庄的别墅。从大门进来,前方是白色的月亮门,像一道影壁墙,遮蔽外人的视线,经过一片水竹摇曳的甬道,才入院子。院内,三层小楼房顶上两层主体分别向两侧挑空,蜿蜒的池塘从花园延伸至室内,隔着一面大大的落地玻璃墙,恍惚间分不清哪里是室内,哪里是室外。更不可思议的是,池塘中间竟然是空的,下面就是那个巨大的工作室,鱼儿游过,涟漪荡漾开来,总担心这水会不会溢出……     

捕鸟蛛

凶悍的捕鸟蛛,已经抓住一只小鸟,正分泌毒液将猎物毒死,刚孵化的小鸟心有不甘,瞪大眼睛,却对身体的麻痹无可奈何,捕鸟蛛得意洋洋,八只毛茸茸的爪子渐渐放松,似乎要开始安心享用猎物。凶狠的捕杀场面,被作者处理得惟妙惟肖,全身长毛的蜘蛛、绝望的小鸟,让观者毛骨悚然。那么,请您猜猜看,这幅捕鸟蛛猎杀图,是用什么材质做成的呢?     

绽放你最灿烂的笑容

秋至过后,几场不经意的细雨飘来,将炎热一点点打退,正如人们所言"一场秋雨一场凉"。如果说春天把嫩绿给了三月,夏天把翠绿给了七月,冬天把洁白给了十二月,那么秋天,就把金色给了十月。十月,是花开飘香的季节。菊花开了,红的、黄的、白的,朵朵怒放着,风情万种、婀娜多姿;桂花开了,偶尔外出,惊奇的发现满枝的桂花把树木装扮的耀眼夺目,一阵微风吹过,阵阵清新淡雅香气飘来,沁人心脾。工作一天的烦躁情绪,在这别样的景象下瞬间被一扫而光。     

尾矿干式堆存在磷矿山选矿厂中的应用

0 引言 尾矿设施具有保护环境,充分利用水资源和保护矿产资源的作用,是矿山生产不可缺少的设施,但投资巨大,基建投资占矿山总投资的10%以上,占选矿厂投资的20%左右,有的几乎与选矿厂的投资一样多,甚至超过选矿厂.尾矿设施的运行成本也较高,有些矿山尾矿设施运行成本占选矿厂生产成本的30%以上.近年来,由于征购土地和搬迁农户的费用越来越高,因此建设尾矿设施的费用也越来越高.此外,尾矿库还是矿山生产的最大的危险源之一,一旦尾矿库失事,将给工农业生产及下游人民生命财产造成巨大损失.而若采用干式堆存尾矿,则可较大地缓解以上矛盾,因干式堆存的尾矿只含有11%～15%的水分,且可依地形而堆存,大大减少了占地面积,且不易垮落.贵州某一选矿厂利用脱水设备实现了尾矿的干式堆存,情况介绍如下.     

走在路上

<正>冬至已过,最近天气渐渐凉了,下班的路上每天必须走过一座高架桥,沿着楼梯爬上去,冷风吹过来,瞬间清醒,连一整天工作的疲惫也消失的无影无踪了。搬家过去的前几天,上下班从高架桥上爬上爬下,左手拎着饭盒,右手拎着刚从菜市场买的菜,炎热的盛夏令人无比烦躁,心想明明直线距离很短的,走个高架桥就绕好多路,可偏偏也没别的小道走,于是每天就当做锻炼身体,慢慢适应了上下班的节奏。     

浅谈王步青花艺术风格

在我国陶瓷美术发展史上,凡有所成就,有所作为的陶瓷美术家,不论哪个时代,哪个艺术院派,都离不开继承传统,吸取精华,并通过自己的长期实践,不断创新,才形成自己独有的艺术风格.景德镇陶瓷美术家王步先生创作的青花作品,以其笔简意骇,博大精深,水色莹澈,淋漓尽致的风格,为人们所称赞.本文试就他的艺术风格归纳为三个方面来简略论述.     

班级管理浅谈

管理是一门科学,更是一门艺术,班级足学校最基本单位.从某种意义上讲,班级管理工作的好坏,直接反映了一个学校的管理水平,如何使班级管理的科学性艺术性有机地统一起来,是我们每一位教师尤其是班主任老师值得深思的重大课题.我们必须清楚地认识到学生是班级的主体,班级管理必须认他们为中心来展开,民主化,科学化,人性化的班级管理是促进学生团结,锻炼学生能力,融洽师生关系的重要前提.只有这样,我们才能更好地促进学生全面发展,才能说是对学生、家长及社会负责,下面我就班级管理的民主化,科学化,人性化方面谈谈自己的一些看法与认识.     

3000算盘指间拨

正入花甲之年的葛新华,20年默默收藏3000多把老算盘,为的是让人们在被键盘和鼠标声占满的今天,还能记得算珠拨动的旋律。"打主意,秋千格。"打一物品是什么?在没有计算器和电脑的年岁,这个几乎存在每家每户的老物件,如今已经慢慢淡出了人们的视野。曾几何时,珠算课是小学里必修的课程,儿时背着算盘上学堂,算珠在背后摇得"噼里啪啦"响;账房里的老先生记账算数,加减乘除,样样离不开打算盘。然而,当算盘逐渐远去时,有一个人,仍然守护着算盘拨动的记忆,经历长长20个年头,默默收集3000多把老算盘,他最欣慰的,是成立了自己独具特色的家庭式收藏馆,他就是葛新华。这位热爱算盘如痴,喜爱"精打细算"的老者年纪60岁,在他的收藏馆里,可以看到琳琅满目的算盘世界。墙上歪歪斜斜不规则地挂着许多算盘,     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

气化给煤系统故障分析

气化给煤装置自投运以来,出现了气化煤仓堵煤、称重给煤机输送皮带因跑偏而损伤以及清扫装置故障频繁等问题,多次造成气化系统减负荷运行。通过对出现的各种问题进行分析,找到了产生这些问题的原因,并有针对性地采用配煤和改进清扫链等措施,使出现的问题得到了极大的改善。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

Effect of degree of deacetylation of chitin on the properties of chitin crystallites

In the present article, chitin from crab shell was systematically deacetylated using a NaOH treatment with control of the reaction time. The degree of deacetylation, monitored using solid-state NMR, revealed that the reaction was pseudo-first order. Based on this, swollen and NaOH-saturated particles are proposed as the reaction system. The weight loss of the partially saponified and neutralized samples after HCl hydrolysis increased linearly with the degree of deacetylation. The crystallinity of the samples was found to increase after acid hydrolysis. According to conductimetric titration, the surface charge density of the crystallites, after acid hydrolysis, was found to increase with base treatment time. The effect of surface charge on the formation of a chiral nematic phase, due to the rodlike nature of the crystallites, was explored. These results show that because the contribution of charged particles to the ionic strength was significant the double layer compression was affected, especially since the surface charge density was close to the Manning limit. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:373–380, 1997     

农药分子半抗原合成的研究进展

农药分子半抗原的合成直接影响后期制备抗体的质量,对于建立农药分子特异、灵敏的免疫分析方法具有关键性作用。综述了国内外农药人工抗原合成过程中的农药分子半抗原的设计原则、合成方法及影响因素等方面的研究进展。     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

磁敏橡胶材料弹性模量的测试与研究

研究了磁敏橡胶超声测试的基本方法和参数,测量了各向同性和颗粒成链磁敏橡胶材料的纵向模量。对含铁颗粒填料体积分数不同的磁敏橡胶样本进行了三点弯曲试验,计算出磁敏橡胶样本的弹性模量,并与相关理论预测模型进行了对比,结果表明,对于各向同性磁敏橡胶,随着含铁颗粒填料体积分数的增加,其弹性模量和剪切模量增大。颗粒成链磁敏橡胶的弹性模量很大程度上依赖于测量的方向,含铁颗粒填料体积分数超过15 ％时,在平行和垂直于颗粒链方向所测得的弹性模量有显著的不同。这是因为含铁颗粒填料体积分数超过15 ％时,磁敏橡胶的颗粒成链结构不具有立体对称性。     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.