Within industrial thermal analysis applications there is an increasing requirement for more rigorous standardisation to ensure that the data obtained can be reproduced within any other laboratory, using the same procedures. Fundamental to all Quality Accreditation programmes is the need to generate ‘equivalent data’. The paper highlights TA applications where this is not achieved despite the use of standard calibration procedures, where true calibration is difficult to establish due to hardware/software design limitations or the absence of proven and traceable reference materials. Lack of standardisation can have important commercial or legal consequences for both instrument manufacturer and end-user.
The work of the ICTAC Committee on Standardisation is reviewed and current Task Group activities are summarised.
Introduction Whereas standardization has conventionally been believed to be an obstacle to innovation, there are growing public policies and academic literature that perceive standardization as an ‘enabler or catalyst’ for
This paper presents an analysis of the structure of computer science research articles published in the Lecture Notes of Computer Science series. While it is clear that most articles start with an Introduction and end with a Conclusion, the structure of text between these two sections is rather diverse. We studied the positions of different section types, and analysed dependencies between them. As a result, we present a number of common patterns used by writers, and make suggestions on how to improve the presentation of research in computer science.
Short survey on the latest developments on standardisation and standard reference materials for particles, surfaces and pore size analysis.
. Lerat , P. 1995 . Les langues spécialisées . Paris : PUF . 3. Terminology Standardization 1992. (Conference Proceedings.) Athens: Technical Chamber of Greece
supported by the Bolyai János Research Grant. References AGTSGN 2007 . = Addendum for Glossary of Terms for the Standardization of Geographical Names. http
Previous study showed that the standardised 50% aqueous-methanol extract of Eurycoma longifolia (TAF-273) affected phase 1 aminopyrine metabolism especially in adult male and female rat hepatocytes. The present study evaluated the molecular mechanism of TAF-273 on phase 1 aminopyrine metabolism in adult male and female rat hepatocytes by using ten cellular stimulants/inhibitors. The study suggested that the effect of TAF-273 on hepatic phase 1 aminopyrine metabolism in adult male rats was probably mediated through the inhibition of tyrosine kinases and through the activation of G-protein, protein kinase G, protein kinase A in the cAMP pathway, calmodulin and protein kinase C. On the contrary, the extract affected adult female rat hepatocytes, only through the activation of G-protein, protein kinase G, protein kinase A in the cAMP pathway and protein kinase C. The effect of TAF-273 on aminopyrine metabolism in the presence of trifluoperazine, phorbol myristate acetate and genistein also exhibited significant difference (P<0.05) between male and female rats. The rate of aminopyrine metabolism was higher in male rats than in female rats and the effect of TAF-273 on aminopyrine metabolism at the molecular level was different in male and female rats on the activation of calmodulin, protein kinase C and tyrosine kinases.
The present state of the certification of the reference materials for thermal analysis is considered. Six sets of reference materials for temperature calibration, resulting from the research work of the ICTA Standardization Committee, are discussed.
Modern DSC instruments generally give very reproducible results that are ideal for quality assurance work. However, various corrections are needed before quantitative data are obtained. Since the corrections differ from one type of instrument to another, it is important to ensure that they are all properly carried out. Without these corrections, it is fruitless to compare data from different sources. The types of problem, and their solutions, are discussed.