类别:爆炸物品
爆炸物危险特性:
可燃性危险特性:
储运特性:
灭火剂:
Epitaxial LiMn2O4 was successfully synthesized by coating a [Li–Mn–O] metalorganic precursor solution onto MgO (110) substrates at temperatures as low as 350 °C. Cross-sectional transmission electron microscopy observation revealed that the orientation relationship between LiMn2O4 and MgO was (111) LiMn2O4 //(111) MgO, (110) LiMn2O4 //(110) MgO, and [112] LiMn2O4 //[112] MgO, which resulted in the (111) LiMn2O4 planes growing perpendicular to the surface plane of MgO. The interface structure consisted of (111) layers of Mn atoms in the LiMn2O4 crystal aligned with the Mg atoms in the (111) planes of the MgO substrate when viewed along the [112] direction.
Changes in appearance brought about by mechanical abrasion may be evaluated with respect to changes in image texture properties, e.g., periodicity. This paper discusses the application of gray-scale image analysis to texture periodicity measurements in fabrics. The techniques described are appropriate for "ordered" textures with relatively well defined features such as the Miratec® class of fabrics. Our samples consist of three sets, a woven twill, a Miratec (nonwoven) twill, and a loosely bonded herringbone hydroentangled nonwoven. In general, our data show that mechanical wear may result in a decrease in texture definition and a tendency toward randomness. The Miratec fabric shows that at the same level of wear, the structure retains its appearance and exhibits no loss of texture.
The principal objective of this paper was to use the course experience questionnaire (CEQ30) instrument to compare and evaluate aspects of provision of postgraduate clinical pharmacy programmes available through institutions of higher education in the United Kingdom.
A postal survey, using the CEQ, of graduates from clinical pharmacy postgraduate programmes. Cases were subject to factor analysis, comparative statistics and regression analysis to describe differences between aspects of programme provision.
Graduates from 10 different postgraduate clinical pharmacy programmes in the UK since 1990 were surveyed. A total of 511 questionnaires were distributed and 364 were returned (72 per cent).
Significant differences between institutions were identified in key factors of student-evaluated aspects of higher education. Factors were generally rated low by respondents. Some programmes appear more likely to encourage surface approaches to learning rather than deep learning. Analysis of factor scores enabled a ranking table to be drawn up for the postgraduate programmes included.
Evaluation of individual programmes shows differences in rating of aspects of provision. There is scope for postgraduate clinical pharmacy programmes to improve. The study findings raise the question of whether these differences in the learning experience may affect the quality of clinical pharmacy graduate.
本文的主要目的是使用课程体验问卷(CEQ30)工具,比较和评估英国高等教育机构提供的研究生临床药学课程的各个方面。
通过邮寄调查CEQ,对临床药学研究生课程的毕业生进行调查。对案例进行因子分析、比较统计和回归分析,以描述课程提供方面的差异。
调查了自1990年以来英国10个不同的临床药学研究生课程的毕业生。共分发了511份问卷,364份被回收(72%)。
在学生评估的高等教育方面的关键因素中,发现了机构之间的显著差异。受访者普遍对这些因素的评价较低。一些课程似乎更有可能鼓励表面学习方法而不是深度学习。因子分数的分析使得可以为包括的研究生课程制定排名表。
对个别课程的评估显示了提供方面评价的差异。有改进研究生临床药学课程的空间。研究结果引发了一个问题,即这些学习经历上的差异是否会影响临床药学研究生的质量。