The phytochemical investigation of the dichloromethane-soluble part of the methanol extract obtained from the fruits of Melia azedarach afforded one new tirucallane-type triterpene, 3-alpha-tigloylmelianol and three known tirucallanes, melianone, 21-beta-acetoxy-melianone, and methyl kulonate. The structure of the isolated compounds was mainly determined by 1D and 2D NMR experiments as well as ...

background & aim: tetranychus urticae koch is one of the most important pests of crops, ornamental and greenhouse plants in the world and, can damage to 900 plant species. resistances to pesticides and acaricides have guided researches to introduce new methods to control t. urticae. botanical pesticides are an important group of natural productions that are usually safer than conventional p...

The BRST cohomology analysis of Lian and Zuckerman leads to physical states at all ghost number for c < 1 matter coupled to Liouville gravity. We show how these states are related to states at ghost numbers zero(pure vertex operator states – DK states) and ghost number one(ring elements) by means of descent equations. These descent equations follow from the double cohomology of the String BRST ...

© 2008 The Authors Journal compilation © 2008 Australian Agricultural and Resource Economics Society Inc. and Blackwell Publishing Asia Pty Ltd doi: 10.1111/j.1467-8489.2007.00404.x Blackwell Publishing Ltd Oxford, UK AJAR ustralian Journal of Agricultural and Resource Economics 1364-985X © 2008 The Authors Journ Compilat on © 2008 A str lian Agricultural and Resource Economics Society Inc. and...

Since 1995 the school education sector has been a dominant focus for education for sustainabi li ty (EfS) in Austra lia (Tilbury, Coleman, & Garlick, 2005, p. 1). The commencement of the Austra lian Susta inable Schools In it iative (AuSSI) in 2003, with its whole school approach, dramatically increased this focus (Department of Education and Training, 2005b). The pilot for the Western Australi...

*This work was funded by the grants from Beijing Municipal Education Commission Science and Technology Project (KZ201110005003) and National Key Basic Research Project (2011CB503702). Corresponding should be addressed to: WANG Ming Lian, Tel: 86‐10‐67396629, E‐mail: [email protected] Biographical note of the first author: LIU Yang, male, born in 1987, postgraduate, majoring in bioengineering. Rec...

background:  the extracts of different parts of plants were found very effective against various pests. the aim of this research was to determine the insecticidal activity of fruit methanol extracts obtained from melia azedarach (meliaceae), phoenix theophrasti (arecaceae), styphnolobium japonicum (fabaceae) and pyracantha coccinea (rosaceae) against the larvae of culex pipiens (diptera: culici...