煤焦油质量的影响因素及对策

通过对涟钢煤焦油质量变差的原因分析，认为其关键因素是焦炉装煤不满．炉顶空间过大和温度过高，造成荒煤气中游离碳含量太高。据此。逐步采取了相应的措施，使焦油质量得到有效改善。     

关于标准生成吉布斯自由能的一种计算方法及绘图实例

根据目前国际上流行的数学和工程计算软件IVIATCAB能很好地帮助工程师和科学家解决实际工程和技术问题的特点，针对热力学标准生成吉布斯自由能对材料合成和加工过程中的物质的反应和相变分析具有密切关系的情况，介绍了一种用MATLB软件计算标准生成吉布斯自由能及绘图的简便方法，并通过实例进行了说明。     

Links Between Sex-Typed Time Use in Middle Childhood and Gender Development in Early Adolescence.

The authors studied sex-typing in the kinds (e.g., sports, handicrafts) and social contexts (same- vs. other-sex companions) of children's free time activities, and the links between sex-typed activities and gender development over 2 years. Participants were 200 White, working- and middle-class children (103 girls, 97 boys; mean age = 10.86 years). In annual home interviews, children rated their self-esteem, gender role attitudes and sex-typed personality qualities, academic interests, and school grades. During 7 nightly phone interviews each year, children reported on their activities. Boys were more sex-typed than girls in their peer activities, and children were least sex-typed in their activities with siblings. Sex-typed activities in middle childhood predicted individual differences in gender development in early adolescence (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Effect of the Length of To-Be-Remembered Lists and Intervening Lists on Free Recall: A Reexamination Using Overt Rehearsal.

In 3 experiments, the authors investigated the effects of to-be-remembered (TBR) and intervening list length on free recall to determine whether selective rehearsal could explain the previous finding that recall was affected only by TBR list length. In Experiments 1 (covert rehearsal) and 2 (overt rehearsal), participants saw 5- and 20-word lists and had to recall the list prior to that last presented list. In Experiment 3, either 1 or 2 lists were presented, and recall of TBR list was postcued. Recall proportion decreased with increased TBR list length. Moreover, the authors found extended recency effects when recall was replotted by when words were last rehearsed (Experiments 2 and 3) and an effect of intervening list length when rehearsal was reduced (Experiment 3). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

UG应用技法

通过使用UG规律曲线和自由曲面建立的命令，一步一步掌握UG高级建模方法。     

Advanced HSLA Steels for Automotive Use

Characteristic HSLA steels for automotive use are introduced in which both of precipitation and microstructure is controlled to obtain suitable mechanical properties.For outer panels such as fender,the combination of low yield strength,high tensile strength and deep-drawability were realized by controlling the distribution of NbC and precipitation free zone.The other steel,developed for chassis parts such as lower arm,utilizes extremely fine interphase precipitation to obtain high yield strength and excellent hole expansionability.Both steels have contributed to the reduction of weight in car body.     

复合脱硫剂中钙的物相分析

利用脱硫剂试样与水反应生产的乙炔通过氧燃烧，生成的ＣＯ２用碱石棉吸收，重量法测定碳量，计算ＣａＣ２含量；用丙三醇－乙二醇－蔗糖－水混合浸取剂浸取游离ＣａＯ和ＣａＣ２，用ＥＧ－ＴＡ在ｐＨ大于１２时测定ＣａＯ和ＣａＣ２合量，将合量减去ＣａＣ２量计算游离ＣａＯ含量；浸取后残渣用乙酸浸取ＣａＣＯ３，用ＥＧＴＡ络合滴定法测定钙量计算出ＣａＣＯ３含量；最后的残渣用硫酸－盐酸－硼酸－水浸取分析ＣａＦ２。     

熔池中液态金属自由表面温度分布与液面形状研究

根据Ｙｏｕｎｇ－Ｌａｐｌａｃｅ方程对液态铀溶池的自由表面进行了数值计算。得到了表面凹陷与表面温度分布的关系。阐明了电子枪加热金属表面时出现的凹陷是由于原子蒸汽对液态金属表面反冲压力所引起的，而不是电子束的冲量造成的观点。对不同最高温度及不同熔池宽度的液态铀熔池表面凹陷形状进行了计算。     

含硫易切不锈钢连铸保护渣的优化

含硫易切不锈钢SUS416要求铜中[S]高达0．25％-0．35％,[O]达到60-100ppm,结晶器内钢水弯月面处[S]、[O]含量更高,使得保护渣容易形成熔化不良的“絮状”渣团,导致铸坯表面出现严重的夹渣和针孔缺陷。针对该问题,研究了保护渣组成、渣型对浇铸状况和铸坯质量的影响。工业化试验表明,提高保护渣中粗石墨含量和降低保护渣容重,可有效抑制“絮状”渣团及其引起的铸坯缺陷,以获得表面质量优良的铸坯。     

卧式连铸铜锭坯连接式分体炉

国内外卧式连铸铜锭坯，绝大多数生产厂家均采用熔化炉与保温炉分开的，在铜液体从熔化炉往保温炉倾注时，会从空气中吸收大量的氧。在连接式分体炉中，熔化炉与保温炉是连通整体式的，熔融铜液体与空气隔离，含氧量很少，可达无氧铜级。