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 &amp; aim: the plants of the greenhouse have been affected by infestation of the pest trialeurodes vaporariorum, called greenhouse whitefly, which markedly reduced production. synthetic insecticides have been widely developed and, their extensive use has brought about disadvantages, like environmental disturbance, pest resistance, lethal effects on non target organisms and toxicity t...

Background & Aim: The plants of the greenhouse have been affected by infestation of the pest Trialeurodes vaporariorum, called greenhouse whitefly, which markedly reduced production. Synthetic insecticides have been widely developed and, their extensive use has brought about disadvantages, like environmental disturbance, pest resistance, lethal effects on non target organisms ...

In this work, a low-cost activated carbon as well as non-hazardous material, with high adsorption capacity, was prepared from Melia azedarach fruit (MF) by ZnCl2 activation for the removal of Pb(II) toxic metal from aqueous solutions. The microstructure of the activated carbon was observed by Scanning Electron Microscopy (SEM). Batch experiments have been performed as a function of pH, contact ...

Macrophomina phaseolina (Tassi) Goid is a destructive pathogen of cowpea that causes serious charcoal rot disease with significant yield losses. Antifungal activity of three indigenous Ascomycetes viz., Trichoderma harzianum, T. viride, and T. hamatum, and two Meliaceae members, i.e., Melia azedarach L. and Azadirachta indica L. were assessed against the pathogen. Laboratory screening trials wi...