Research ArticleOpen accessIn the abstractA Simple Tubesheet Layout Program for Heat ExchangersS. Murali, Y. Bhaskar RaoThe development of tubesheet layout program for shell and tube heat exchangers is presented in this study. Program is written in AutoLISP language, which provides standard tubesheet layout drawing as per standard codes and non standard tubsheet in AutoCAD Environment. The program computes the optimal number of tube count and lays out drawing with respecting constraints, including the shell ID, … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Nov 2008 · 9,046 accessesView PDFCite
Research ArticleOpen accessIn the abstractEssential Oil Component in Flower of Lemon Balm (Melissa officinalis L.)Jafer Adinee, Khosro Piri, Omid KaramiThis research focuses on the analysis of the chemical composition lemon balm essential oil. The essential oil of flowers was obtained by steam distillation with a Clevenger apparatus. The chemical components of the essential oil of lemon balm were analyzed by capillary GC and GC/MS and 12 substances were identified. The flower oil contained trans-carveol (28.89%), citronellol (25.24%), δ-3-carene (5.26%), … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 3 · 30 Sep 2008 · 8,115 accessesView PDFCite