BACKGROUND Sorption and dissipation of aged metolachlor were characterized in rehabilitated and eroded prairie soils using sequential batch slurry (conventional) and accelerated solvent extraction (ASE). RESULTS In spite of an almost twofold difference in soil organic carbon (OC) content, S-metolachlor sorption coefficients (K(d)) and dissipation rates (DT(50)) were the same in soils from dif...

The volatile constituents of the flowers of Caralluma europaea (Guss.) N.E.Br (Apocynaceae) from Lampedusa Island were analyzed by a headspace GC method. The analyses allowed the identification and quantification of 41 compounds. The main components were, among the monoterpenoids, terpinolene (23.3%), alpha-terpinene (19.1%) and linalool (18.4%), whereas, among the carbonylic compounds the majo...

2 Correspondence should be addressed to Mitchell Guss, Chairman of the Commission on Biological Macromolecules, Department of Biochemistry, University of Sydney, NSW 2006, Australia, e-mail: [email protected]. Recent discussions of the Commission on Biological Macromolecules have con®rmed support for a modi®cation of the existing guidelines for the deposition and release of macromolecu...

Aqueous extracts prepared from seven plant species, Cyclamen mirabile Hildebr., 1906 (Pirumilaceae), Fritillaria bithynica Baker, 1874 (Liliaceae), Juglans regia L., 1753 (Juglandaceae), Muscari neglectum Guss., 1842 (Liliaceae), Nicotiana tabacum L., 1753 (Solaneceae), Sternbergia candida Mathew and Baytop, 1979 (Amaryllidaceae), Urginea maritima L., 1872 (Liliaceae) were tested for their inse...

This study aims to evaluate the activity of Italian vulnerary plants against the most important oral pathogenic bacteria. This estimate was accomplished through a fivefold process: (a) a review of ethnobotanical and microbiological data concerning the Italian vulnerary plants; (b) the development of a scoring system to rank the plants; (c) the comparative assessment of microbiological propertie...

Sir, Disseminated porokeratosis palmaris and plantaris (DPPP), a subtype of porokeratosis Mibelli, is a rare autosomal dominant genodermatosis first described by Guss et al. in 1971 (1). An early review of the literature showed that 7% of 250 patients with porokeratosis subsequently developed skin tumours (2). Squamous cell carcinomas (SCC), Bowen’s disease (BD), and rarely, basal cell carcinom...