液化气脱硫技术及其工业应用

阐述了无碱催化氧化脱臭、硫醇无碱转化组合技术、络合脱除技术、吸附技术、催化氧化—吸附技术、Merox抽提—氧化脱臭、纤维膜技术等液化气脱硫技术的发展现状,并说明了脱硫技术在国内多家石化企业的工业应用情况.     

Multi-Class Classification Methods of Cost-Conscious LS-SVM for Fault Diagnosis of Blast Furnace

 Aiming at the limitations of rapid fault diagnosis of blast furnace, a novel strategy based on cost-conscious least squares support vector machine (LS-SVM) is proposed to solve this problem. Firstly, modified discrete particle swarm optimization is applied to optimize the feature selection and the LS-SVM parameters. Secondly, cost-conscious formula is presented for fitness function and it contains in detail training time, recognition accuracy and the feature selection. The CLS-SVM algorithm is presented to increase the performance of the LS-SVM classifier. The new method can select the best fault features in much shorter time and have fewer support vectors and better generalization performance in the application of fault diagnosis of the blast furnace. Thirdly, a gradual change binary tree is established for blast furnace faults diagnosis. It is a multi-class classification method based on center-of-gravity formula distance of cluster. A gradual change classification percentage is used to select sample randomly. The proposed new method raises the speed of diagnosis, optimizes the classification accuracy and has good generalization ability for fault diagnosis of the application of blast furnace.     

瓦屋山水电站厂房区红层岩体古滑坡稳定性研究

红层岩体以其岩体结构的软硬相间及软弱夹层发育而在边坡稳定方面表现为"易滑地层".瓦屋山水电站厂房区边坡为顺向坡,砂岩类岩石与黏土岩类岩石呈缓倾、互层状(倾角10°～20°)产出.构造与表生改造作用下,在这两类软硬相间的岩石界面上常形成分布较为连续的软弱夹层,这类岩体较易沿软弱夹层产生顺层滑动.地质历史时期,瓦屋山厂房区就是在这样的地质背景下,形成了多个古滑坡体,如颜湾和庙子岩古滑坡,它们在自然状态下已基本稳定.随后因风化剥蚀等作用,古滑坡体形态被改变或被来自后缘斜坡的坡残积层所掩埋,使其在勘察期间难以被发现.庙子岩滑坡即是这样一个被掩埋的古滑坡体坡,施工开挖过程中,由于切脚及降雨作用,使其重新滑动复活.本文以反复剪试验得到的滑动面抗剪参数,采用边坡稳定极限分析能量法(Energy Method Upper Baond Limit Analysis),简称EMU法,对庙子岩古滑坡在各种工况下的稳定作了计算,并据其结果采取了相应的抗滑处理.本文可作为红层岩体地区该类型滑坡勘察和工程处理设计的参考.     

Emotional plasticity: Conditions and effects of improving emotional competence in adulthood.

This study aimed to investigate (a) whether it is possible to increase emotional competence (EC) in adulthood; (b) whether this improvement results in better mental, physical, and social adjustment; (c) whether this improvement can be maintained 1 year later; and (d) whether these benefits are accompanied by a reduction in stress-hormone secretion (i.e., cortisol). One hundred and thirty-two participants were randomly assigned to an EC-enhancing intervention (in group format) or to a control group. Participants in the intervention group underwent a specifically designed 15-hr intervention targeting the 5 core emotional competencies, complemented with a 4-week e-mail follow-up. Results reveal that the level of emotional competencies increased significantly in the intervention group in contrast with the control group. This increase resulted in lower cortisol secretion, enhanced subjective and physical well-being, as well as improved quality of social and marital relationships in the intervention group. No significant change occurred in the control group. Peer reports on EC and quality of relationships confirmed these results. These data suggest that emotional competencies can be improved, with effective benefits on personal and interpersonal functioning lasting for at least 1 year. The theoretical implications of these results as well as their practical implications for the construction and the development of effective emotional competencies interventions are discussed. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Analysis of characteristic aroma of fungal fermented Fuzhuan brick‐tea by gas chromatography/mass spectrophotometry

Fuzhuan brick‐tea is a popular fermented Chinese dark tea because of its typical fungal aroma. Fungal growth during the production process is the key step in achieving the unique colour, aroma and taste of Fuzhuan brick‐tea. To further understand the generation of the characteristic aroma, changes in the main volatile compounds of Fuzhuan brick‐tea during the fungal growth stage were studied by gas chromatography/mass spectrophotometry. The results showed that the content of volatile compounds, especially aldehyde compounds with stale aroma such as (E)‐2‐pentenal, (E)‐2‐hexenal, 1‐penten‐3‐ol, (E, E)‐2,4‐heptadienal and (E, Z)‐2,4‐heptadienal, increased significantly in fermented tea samples. The concentration of terpene alcohols with flower aroma also increased notably during the fermentation process. The compounds with stale and flower aromas in combination with some volatile components of the raw material contributed to the characteristic ‘fungal/flower’ aroma of Fuzhuan brick‐tea. Microbial metabolism during the fermentation process probably played the key role in the generation of characteristic aromatic compounds of Fuzhuan brick‐tea. Copyright © 2007 Society of Chemical Industry     

中浓纸浆流体化过程对纸浆性能的影响

本文在对中浓纸浆进行流体化处理后，对纸浆的主要性能参数进行检测，并通过扫描电镜观察了纤维形态的变化，从而了解中浓纸浆流体过程对纸浆性能的影响程度。     

海狸鼠γ-亚麻酸的薄层色谱和HPLC分析

采用皂化及改进的尿素包和法，从海狸鼠脂肪中获得富集γ－亚麻酸等多不饱和脂肪酸的浓缩物。用苯：甲醇：冰醋酸＝9：0.4:0.4(V:V:V）作为混合展开剂，10％磷钼酸的乙醇溶液为显色剂，建立了酸银薄层色谱（AgNO3-TLC）法检测浓缩物中的γ－亚麻酸的简易方法。应用高效液相色谱（HPLC）法，应用C18柱，以乙腈和水为洗脱剂进行梯度洗脱，242nm紫外检测，能很好地分析混合物中的γ－亚麻酸。     

反相高效液相色谱法测定发酵饮料中有机酸和维生素C的含量

研究了利用高效液相色谱分离测定发酵饮料中10种有机酸和维生素C的方法。应用反相C18柱,3%CH3OH-0.05mol/L Na2HPO4(pH2.50)缓冲溶液作为流动相,流速为1.00mL/min,柱温为30℃,检测波长为215nm时,可以较好地分离和测定发酵饮料中常见的10种有机酸和Vc。方法相对标准偏差0.048%～4.416%,回收率98.6%～101.9%,各成分的线性相关系数r>0.99,方法简便,具有较高的准确度和精确度,可应用于发酵饮料中有机酸和Vc的检测。     

两种诱变方法对不同产油真菌诱变初步研究

采用紫外诱变和微波诱变分别对三株产多不饱和脂肪酸的真菌进行诱变处理，不同的菌株诱变效果不同，生物量、油脂量、产油率、多不饱和脂肪酸含量微波诱变最大提高率分别为3．80～10．29％、17．02～23．69％、3．06～8．61％、9．61～35．05％；紫外诱变最大提高率分别6．35～13．87％、6．94～22．64％、3．60～6．04％、4．85～37．03％。与紫外诱变相比，除生物量外，微波诱变对油脂产量、产油率及多不饱和脂肪酸的产量诱变效果较好，可以作为一种有效的诱变育种方法。     

小靶前距水平井反位移轨道设计方法

为解决小靶前距水平井一次造斜造斜率高所造成的技术难题,采用小靶前距水平井反位移井眼轨道设计方法。使用该方法,在不移动井口位置的情况下,通过第一次反方向造斜,增大水平井的靶前距,再采用常规造斜率设计小靶前距水平井轨道,降低施工难度。主要方法是先按常规造斜率设计计算水平井所需的靶前距,此靶前距与原小靶前距的差值即为所需的反位移量,再根据反位移段的造斜率、降斜率及造斜点深度,计算出反位移井段的最大井斜角和稳斜段长度,在此基础上设计出井眼轨道的其他参数。