22,308 research outputs found
Recommended from our members
A Letter to Mr. Robertson from Dr. John Wren- Lewis
The contents of this letter regards what could be found out about the views of H.D. Noone and his relationship with Kilton Stewart. The letter also raises questions about Noone that Mr. Robertson may be able to answer. It lists the areas in which the writer would be interested in Robertsonās
thoughts, such as the mystery of the 1934 and
1939 lectures. Accompanying the letter is the extract from a manuscript of a proposed book on āDreams and the Creative Processā in which Wren-Lewis asks for Robertsonās opinion
Recommended from our members
A Letter to Mr. Robertson Regarding Stewart Wavell
This letter discusses the excitement of John
Wren-Lewis on hearing of Stewart Wavellās
experiences with the Temiar from an extract sent to him by Mr. Eric Robertson
Recommended from our members
A Letter to Mr. Robertson from John Wren-Lewis
This letter concerns Dr.John Wren-Lewis
introducing himself to Mr. Robertson in the hope that Robertson may confirm the stories behind the Senoi ādream tribeā and H.D. Noone
Recommended from our members
A Letter to Mrs. Robertson from Dr. John Wren- Lewis
This letter highlights the trip into the Malay jungle by Dr. John Wren-Lewis, obtaining up-to-date photographs of the Temiar as well as some valuable historic photographs from a Malay civil servant. He also requests any reminiscences from Mrs. Robertson
Environmental Management for Agriculture (EMA) and Sustainable Agriculture
John Tzilivakis and Kathleen Lewis, āEnvironmental Management for Agriculture (EMA) and Sustainable Agricultureā, paper presented at the 2nd European Conference of the European Federation for Information Technology in Agriculture, Food and the Environment, 27 ā 30 September 1999, Bonn, Germany.Submitted Versio
Wild bee toxicity data for pesticide risk assessments
Pollination services are vital for agriculture, food security and biodiversity. Although many insect species provide pollination services, honeybees are thought to be the major provider of this service to agriculture. However, the importance of wild bees in this respect should not be overlooked. Whilst regulatory risk assessment processes have, for a long time, included that for pollinators, using honeybees (Apis mellifera) as a protective surrogate, there are concerns that this approach may not be suffciently adequate particularly because of global declines in pollinating insects. Consequently, risk assessments are now being expanded to include wild bee species such as bumblebees (Bombus spp.) and solitary bees (Osmia spp.). However, toxicity data for these species is scarce and are absent from the main pesticide reference resources. The aim of the study described here was to collate data relating to the acute toxicity of pesticides to wild bee species (both topical and dietary exposure) from published regulatory documents and peer reviewed literature, and to incorporate this into one of the main online resources for pesticide risk assessment data: The Pesticide Properties Database, thus ensuring that the data is maintained and continuously kept up to date. The outcome of this study is a dataset collated from 316 regulatory and peer reviewed articles that contains 178 records covering 120 different pesticides and their variants which includes 142 records for bumblebees and a further 115 records for other wild bee species.Peer reviewe
Extraction of volatile and metals from extraterrestrial materials
Since March 1, 1989, attention was concentrated on the extraction of ilmenite from extraterrestrial materials and on the planning and development of laboratory facilities for carbonyl extraction of ferrous metal alloys. Work under three subcontracts was administered by this project: (1) electrolytic production of oxygen from molten lunar materials; (2) microwave processing of lunar materials; and (3) production of a resource-oriented space science data base
Extraction of volatiles and metals from extraterrestrial ores
Extraterrestrial materials, processes, and products were identified which are associated with the production of propellants in space, including the most complete possible conversion of the feedstocks for propellant production into useful products with the minimum feasible expenditure of energy. Laboratory research was identified and begun on several processes that promise very large increases in the mass of useful products at the cost of only modest increases in energy consumption. Processes for manufacturing propellants then become processes for making propellants plus metals and refractories. It is the overall yield of useful materials per unit expended energy that matters, not simply the yield of propellants. Three tasks have been undertaken to date: (1) Literature search and compilation of a dBase 3 data base on space materials processing; (2) Gaseous carbonyl extraction and purification of ferrous metals; and (3) Characterization of lunar ilmenite and its simulants
- ā¦