高压脉冲放电处理含氰废水的影响因素探讨

焦化废水中含有大量的氰化物,必须采取有效措施进行去除,传统去除方法运行成本高、操作复杂。提出了用高压毫微秒脉冲产生的非平衡等离子体处理含氰废水的方法,对其影响因素pH值、放电时间、气流量、放电条件等进行了大量的实验研究,结果表明:溶液初始pH值为9.09,放电2 h,放电电压46 kV时氰化物的去除率最高可达93.2%,氰化物质量浓度可降至0.26 mg/L。实验对比了放电与不放电氰化物的去除效果:相同条件下放电后氰化物的去除率大大提高,为焦化废水中氰化物的去除提出了一种新的方法。     

渤中13-1油田井身结构优化研究

针对渤中 1 3- 1油田钻井过程中存在的主要问题 ,利用测井、地质、录井和钻井资料 ,对该油田的井身结构进行研究 ,设计出合理的井身结构 ,优化了套管程序 ,为进一步减少钻井过程中漏、喷、塌、卡等复杂情况的发生 ,提供了科学的理论依据     

南京老虎山黄土-古土壤剖面不同粒级组分的磁化率及其古气候意义

利用沉降离心法将老虎山黄土-古土壤的酸不溶相分离成<2μm、2～45μm和>45μm三个粒级组分,并分别测定了这些组分和全岩的磁化率。结果表明,无论是全岩,还是三个不同粒级组分,它们的磁化率都可以单独作为长江中下游地区古气候演变的参考指标。其中,<2μm粒级的质量磁化率明显大于全岩和2～45μm、>45μm两粒级,而且其分辨率也明显高于2～45μm和>45μm这两个粒级组分。本实验结果还显示,虽然<2μum的质量磁化率最大,但对全岩质量磁化率的贡献率与2～45μm粒级相当,>45μm粒级的贡献率较低。     

Evaluating dynamic performance: The influence of salient Gestalt characteristics on performance ratings.

It is well recognized that performance changes over time. However, the effect of these changes on overall assessments of performance is largely unknown. In a laboratory experiment, we examined the influence of salient Gestalt characteristics of a dynamic performance profile on supervisory ratings. We manipulated performance trend (flat, linear-improving, linear-deteriorating, U-shaped, and ∩-shaped), performance variation (small, large), and performance mean (negative, zero, positive) within subjects and display format (graphic, tabular) between subjects. Participants received and evaluated information about the weekly performance of different employees over a simulated 26-week period. Results showed strong main effects on performance ratings of both performance mean and performance trend, as well as interactions with display format. Theoretical and practical implications of the results are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

本钢炼焦煤最佳配比分析

结合本钢的生产实际，对炼焦煤的最佳配比作了比较具体的分析，同时对资源，质量、成本也作了比较详细的调查，并提出了本钢焦化厂最佳配煤比方案，由此可看出，最大限度地降低采购成本，继续开发合理的配煤比例，具有广阔的前景。     

Instron texture profile of buffalo milk cheddar cheese as influenced by composition and ripening changes

Buffalo milk Cheddar cheese samples of different ages were analysed for compositional attributes (CA), ripening indices (RI) and Instron Textural Profile (ITP). All samples were compositionally alike, except for pH and salt-in-moisture (SM) contents. RI showed significant variations. CA and RI showed highly significant correlations within themselves and with each other, except for moisture with pH, SM with moisture, MNFS, Fat and FDM and Fat with MNFS. The ITPs of cheeses showed significant variations and had highly significant intercorrelations indicating their interdependence. CA (except moisture and MNFS) and RI showed a highly significant correlationship with ITPs. Moisture content showed a highly significant correlationship with all ITPs, except cohesiveness and springiness, where it was significant. MNFS content showed significant correlations only with hardness and brittleness. Stepwise regression analysis revealed that MI was the most predominant factor influencing cheese texture, followed by pH, SM, FDM and TVFA. Knowing Ca and RI, the textural properties of cheeses can be forecast through mathematical equations. Similarly the age of cheese can also be predicted if RI and/or textural properties are known.     

离子注入对Cr12MoV钢表面组织结构和力学性能的影响

研究了Ｃｒ１２ＭｏＶ钢离子注入层的显微组织特征及其对表面性能的影响。结果表明，离子注入使Ｃｒ１２ＭｏＶ钢的表面硬度和耐磨性能得到显著改善，且存在着一个最佳的注入剂量，约为３×１０＾１＾７Ｎ＾＋／ｃｍ＾２左右。离了注入在Ｃｒ１２ＭｏＶ钢表面层中形成了大量细小弥散的第二相粒子，并使α－Ｆｅ晶格发生严重畸变，从而引起材料表面强化。     

齿轮磨前滚刀的齿形研究

本文介绍了磨前滚刀滚切齿轮的最大根切量和磨后的渐开线长度计算,并建立了数学模型。为更加直观起见,还建立了模拟滚齿的数学模型。并在实验的基础上提出了参考标准。     

山西煤焦流通市场化改革建议

本文分析了山西在推进煤炭流通市场化过程中面临的机遇及现行体制弊端,提出建立更加适合市场经济的煤焦流通体制的若干建议。     

焦化干气一步法预处理多功能催化剂的工业侧线试验

对焦化干气一步法预处理工艺催化剂进行了工业侧线试验。考察了温度和体积空速对催化剂的活性及催化剂稳定性和加氢选择性的影响。催化剂为以复合型ZnO和过渡金属氧化物为活性组分的多功能催化剂,用于低温下焦化干气中烯烃加氢和硫化物脱除。试验结果表明,在压力1.6MPa、温度285～350℃、空速100～500h-1的条件下,多功能催化剂能将焦化干气中烯烃的体积分数由8%～14%降至0,总硫含量从10～70μg/g脱除至5μg/g以下;经28d考核,多功能催化剂仍保持良好的烯烃加氢和硫化物脱除性能,可用于精制焦化干气。