|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 工作扩大化和工作丰富化的动机特征差异显示文摘虽然,工作扩大化和工作丰富化常常被看成两个不可分割或可相互转换的概念,它们仍作为两种不同的管理策略得到最好的应用。工作扩大化要求改变工作的技术方面,而工作丰富化则要求改变组织的行为系统。尽管工作丰富化比工作扩大化对员工具有更大的动机影响,但实现它是极其复杂和耗时的,因为它包括了改变组织及社会成员的态度和价值观方面。行为的改变常常导致来自组织成员的障碍。工作扩大化涉及技术上的改变,这种改变比行为改变更易接受,因此,不太可能产生组织障碍。与赫茨伯格(Herzbezg)观点相反的意见认为:工作扩大化对扩展工作的意义是一种无效的应用。 | K.H.Chung M.F.Ross 朱晓平 | 1985 | 心理科学进展1985，，1： | 3 |
| 2 | Separation of Toluene Insoluble Matter from Syncrude Coker Heavy Gas Oil显示文摘Toluene insoluble matter (TIM) in coker heavy gas oil (CHGO) from oil sands bitumen is harmful to the downstream hydrotreating, and it may be difficult to be removed by conventional filtration. In order to determine its origin, the TIM must first be separated from CHGO for characterization. Two techniques are described to acomplish this goal. In the ultra-centrifugation approach used in this work, CHGO is blended with a miscible liquid and centrifuged under 366000 G (gravity) force. Through this procedure toluene and hexane diluents yielded TIM contents of 24μg.g^-1 and 88μg.g^-1 respectively. In an alternative simplified procedure, the initial ultracentrifugation step is omitted. Several different solvents are evaluated for use as diluents but, in each case, toluene is still used in the subsequent washing steps. TIM contents determined by this method range from 23 to about 200μg.g^-1. The amount of TIM separated by means of this method depends primarily on the initial diluent used.Other conditions, such as diluent-oil ratio, water-oil ratio, mixing time, temperature and water pH value, are also studied. | 许志明 王宗贤 L.S.Kotlyar K.H.Chung | 2003 | Chinese Journal of Chemical Engineering2003，11，6： | 1 |
| 3 | Prevalence of human papillomavirus in cervical cancer: A multicenter study in China显示文摘 | Keith W.K.Lo Y.F.Wong May K.M.Chan James C.B.Li J.S.Poon Vivian W.Wang S.N.Zhu T.M.Zhang Z.G.He Q.L.Wu G.D.Li John S.L.Tam T.Kahn P.Lam T.H.Cheung Tony K.H.Chung | 2002 | Int J Cancer2002，，3： | 1 |
| 4 | 沥青加氢裂化过程中催化反应表观动力学的探讨显示文摘实际加工过程中,进料(如沥青)分子组成太复杂,难以确定。因而一般把反应组分定义为虚拟组分。可以利用虚拟动力学模型建立工艺性能模型。这种动力学模型通过改变进料和产物中虚拟组分的浓度,能简单地研究虚拟反应物总的转化(或消失)速度。最近的资料表明,亚大巴斯卡沥青加氢裂化过程中主要催化反应(加氢脱硫(HDS)、加氢脱氨(HON)、康氏残炭值(CCR)和金属的脱除) | K.H.Chung 王立新 | 1992 | 辽宁石油化工大学学报1992，19，2： | 0 |
| 5 | Origin of Unliberated Bitumen in Athabasca Oil Sands显示文摘Oil sands contain a so-called organic rich solids component (ORS), i.e., solids whose surfaces are strongly associated with toluene insoluble organic matter (TIOM). Typically, humic material is the major component of TIOM. It provides sites for adsorption and chemical fixation of bitumen. This bound bitumen is “unliberated”, and considerable mechanical or chemical energy may be required to release it. In order to establish a correlation between bitumen recovery and ORS content, a few selected oil sands were processed in a Batch Extraction Unit (BEU). Analysis of the middlings and coarse tailings streams from these tests indicated a relatively constant bitumen to ORS ratio of 2.8±0.7. This value allows the liberated-unliberated bitumen balance (LUBB) to be calculated for any given oil sands. The amounts of bitumen recovered as primary froth during the BEU experiments are close to the estimated liberated bitumen contents in each case tested. This observation indicates that the liberated-unliberated bitumen calculation is an important quantitative parameter for prediction of bitumen recovery under specific recovery conditions. Preliminary results indicate that the ORS content of an oil sands may be estimated from the carbon content of bitumen free oil sands solids. | TuYun J.B.O'Carroll B.D.Sparks L.S.Kotlyar S.Ng K.H.Chung G.Cuddy | 2005 | Petroleum Science2005，2，1： | 0 |
| 6 | 天然碱辅助热水驱油显示文摘天然碱是一种含90%以上Na2CO3和NaHCO3的矿物质。间歇驱替试验表明,天然碱辅助热水驱油对Athabasca沥青的特性曲线与采用Na2CO3时相似。相同采收率时,天然碱的剂量为NaOH的3~4倍,但由于其价格低,很可能成为热水驱中NaOH的替代品。 | Q.Dai K.H.Chung 毕庶力 | 1997 | 国外油田工程1997，13，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员