品读

试读:遍地艺术弗赖堡拼贴地砖走在巴黎的街上,切记要看地上,因为一不小心,就会踩到地雷;而走在弗赖堡的街上,也切记要看地上,因为这里有满城的砌石风景"马赛克拼贴"。弗赖堡旧城区是无障碍的行人徒步区,街道上满布精心设计的鹅卵石拼贴图腾,塑造了这个亲密尺度城市中最独特的画面,每个景点、每家店面、每个转角,都有诉说着历史的符号,或者只是一朵装饰性的小花与图腾,这些东西,看懂也罢,看不懂也行,让我一路走来,走得很不专心,也走得快乐无比。这些花样百变的图案,总计超过70种,有传统的,有故事的,有市徽的,有可爱的,有应景的,有符合店家的,这一块块的石材由莱茵可采集而来,别具巧思地拼贴     

寸村器用 大美生活

繁闹的街市,一间半户外的玻璃阳光房隐匿于此,暖阳铺洒在挑高的落地玻璃窗上,晶莹透亮,透过门窗隐约看得见一些陈列在架子上的茶瓷器具,神秘而低调,想进去探听它们的故事。推门而入,宽敞厚实的老榆木长桌映入眼帘,朴莲上房、石雨、大乘器等寸村品牌旗下的器用陈列其上,传统素雅的风格让浮躁的心沉静下来。精致小巧的茶杯,承载着青花述说的故事,竟让人为之动容;方正质朴的竹制盒子,灵巧多变,包装盒、茶盘、收纳盒、果盘,随心随性,应有尽有。古旧的砖雕照壁有4米高,随照壁向上,一盏竹制吊灯垂挂而下,精美而独特。还有一些没见过的装饰,都是寸村自主设计的作品,虽然没有夸张的元素,却各有各的味道,叠加在一起,组成这间兼具现代与古典元素的展示厅。     

山东农药学会(山东化学化工学会农药专业委员会)

服务宗旨:团结和组织农药科技工作者坚持科学技术是第一生产力的思想,促进农药科技技术的普及和推广,促进农药科技人才的成长,促进科学技术与经济的结合,积极组织会员单位参与国际、国内市场的开拓与竞争,引导会员单位科技创新,营销创新,开展农化科技服务,指导农民科学、安全、合理用药,不断提高农民科学用药水平,减少环境污染,保护生态环境,适应市场经济的不断发展。     

流淌着的是希望

寒冷的季节暂时离我们而去,不时的寒潮,沙尘暴,台风以及破坏性极强的地震,海啸,不时袭击着地球;在这不太平的时局,部分地区时而战火纷飞,时而风平浪静,一片太平,有时那树上刚刚露出的新芽,一瞬间就难见踪迹,有的则活得很好,     

证书

他明白手中这份证书的份量. 几年来,可以说打他刚一上任的那一天起,他就将产品质量放在了首位,他深知,化工产品的质量问题没小事,特别是对于他所领导的这样大型的化工企业来说,意义尤其重大.几年来,他狠抓规章制度不放松,常抓不懈,如今,终于结出了硕果,他所在的企业在优质产品的评比中,顺利拿了个金奖.论理,他也该喘口气,休息一下了.然而,他没有.     

春天里 承生命之“轻”

——夜东风来,吹开了柳岸的桃花梨花,唤醒了蛰伏了一冬的小动物们,那么你呢?趁着夏日还没到,赶紧努力一把吧,生命是有限的。时间是无限的,我们何不把无限的时间分一部分给瘦身事业呢?更何况,春天来了,夏天还会远吗!褪去了冬日厚实的棉衣,夏日的步步临近,瘦身产品立马咸了爱美女性美丽清单里不可缺少的一项。清凉的海边。休闲的假日,美丽的约会、多年不见的老友聚会,种种场合都是展现婀娜身姿的好时机,然而,每天朝九晚五的办公室生活,却让许多上班族变成小"腹"婆,小象腿,拜拜臂,在镜子面前始终悲哀地感叹道:究竟何时才能穿上小一号尺寸的衣服呢?何时才能更自信勇敢地在众人面前展示窈窕身材?生命不患,瘦身不止,万事终于细节,减肥也一样,牢记生活中的小细节,让你在不知不觉中保持纤瘦身材,做个一辈子的健康瘦美人!     

记忆里的白粽子

最简单的滋味最足,你懂吗?记忆里,每年端午,妈妈都要被外公召回,千里迢迢地回娘家去,只为了吃两餐饭,住一晚,再背一篓粽子。所谓的千里迢迢,其实也就四十几里山路,不通车的年代,羊肠山路,爬山下坎过河的那种辛苦,不用千里迢迢来形容,好像对不起那肿起来的腿,乡亲们把这种感觉形容得很贴切,"看     

当纸铺邂逅花草

<正>纸艺,百折千变。越来越多的人喜欢上这门艺术,纸艺店也开始在城市的角落里悄然绽放。迷雾朦胧,闲游惠山古镇,在绣璋街邂逅了一家纸艺店,花姿招展,灿烂满目,让人忍不住走上"吱呀"作响的木楼梯,来到2楼的"天天爱纸艺"花坊。敞亮的木制阁楼里,摆满了各种花卉,明朗的向日葵、娇羞的百合、热烈的非洲菊、妩媚的蓝色妖姬、优雅的薰衣草……所有的花都不是真的花,却有真花之美。雕花木窗旁,店主刘芳正在创作一簇虞美人,她将绿色纸条在铁丝上缠绕成花杆,嫩黄的纸片剪成纤细的丝状卷出花蕊,火红的花瓣用双面胶固定……偶尔举起半成品,想象它完成后的动人模样。面容年轻的刘芳,其实是一个10岁孩子的妈妈,开这样一家店,既是成全自己热爱手工,想开一家别致小店的心愿,也是为了更好地照顾儿子天天。刘芳最爱的手工就是纸艺了,"多彩柔媚的花瓣,吐露芳华的花蕊,纸最能表现花朵的美丽。"开店之前,一直纠结要     

降低蜂窝陶瓷用堇青石热膨胀系数的途径

分析了堇青石的特殊热膨胀性,详细叙述降低蜂窝陶瓷用堇青石热膨胀系数的各种途径,包括选择合理的化学组成,控制原料的种类,形貌,粒度,减少原料的杂质,选择合适的添加剂,以及烧成过程的控制等。     

潘华兵作品

诸如方壶要讲究轮廓,却要线条凝炼圆润,曲直相间,刚柔相济,方可蕴育方器敦厚饱满的神韵,又有圆器的灵秀,这需要扎实的底蕴与深厚的美学修养。紫砂自有天地,想有精致美焕的创新作品,朝朝夕夕的深入精研与领会前人精细的制壶美学,方能再与时俱进的创制新品,假我时日,或有可观。     

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 chitosan on the kinetics of ultrasonic degradation of chitosan

The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003     

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。     

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。     

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.     

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。     

醋酸纤维素取代基分布与性质的关系

分析了以吡啶为溶剂的醋酸纤维素的13C-NMR核磁共振谱,得出了三种不同位置羟基的取代度。结合X—射线和DSC分析,初步说明具有相同取代度但未经水解和经过水解的醋酸纤维素(CA) 性质上的差异是由于三个羟基上的取代度分布不同及消晶程度差异所致。     

平板硫化机横梁受热变形及热板中高度的应用

介绍了平板硫化机热板中高度在硫化排气过程中的作用及其实现途径和评价方法;提出了设置热板中高度时应遵守的＂刚性横梁、柔性热板＂概念和＂最短路径、最小排气阻力＂原则;探讨了横梁热变形对热板中高度的影响。结果表明,参考横梁热变形设置的热板中高度有助于解决平板硫化机在复杂状态下硫化制品时的表面排气问题。     

孤岛原油乳状液稳定性影响因素研究

通过乳状液稳定性实验考察了孤岛原油乳状液稳定性影响因素。结果表明,低剪切作用下,部分水解聚丙烯酰胺(HPAM)与原油作用1d和54d,所测得其浓相体积分数很快接近零,即HPAM与原油所形成的乳状液稳定性较低。而当溶液中存在50μg/g固体颗粒蒙脱土时,测得其与原油作用1d和54d后的浓相体积分数都约0.08。当溶液中同时含有固体颗粒与HPAM时,测得其与原油作用后所形成的乳状液浓相体积分数很快达到零,固体颗粒与HPAM的协同作用对原油乳状液稳定性有较大影响。另外,随着盐浓度、温度的增加,孤岛原油所形成的乳状液稳定性降低。在30000r/min高速剪切作用下,测得聚合物、固体颗粒模拟水体系与原油间所形成的乳状液浓相体积分数约为0.3,可形成较稳定的乳状液。     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.