RESUMO
An investigation of various variables in 100 para-suicide patients admitted to Wigan and Leigh Group of Hospitals was carried out. The subject's age, sex, religion, social class, type of residence, previous treatment received, etc., were examined in detail.
Assuntos
Tentativa de Suicídio/epidemiologia , Adolescente , Adulto , Criança , Inglaterra , Feminino , Hospitalização , Humanos , Masculino , Religião , Meio SocialRESUMO
Ethephon (I) is used commercially to prolong the flow of latex from the rubber tree after tapping (Yield stimulation). The compound is applied to the bark in the region of the tapping cut and the effect on latex flow is due to the ethylene released by chemical decomposition, since gaseous ethylene itself is also a very effective stimulant. When 14C-I is applied to the bark of a young Hevea seedling, it is absorbed into the plant by processes which appear to be largely non-metabolic. Ethylene formation commences immediately at the site of application, and the gas is quickly translocated throughout the plant. Translocation of I to all parts of the plant also occurs and the accumulation of 14C in the bark above the zone of application is greater than that below. Chromatographic analysis has shown that compounds other than I remain in the plant tissue. Experiments using 14C-I have shown that detached leaves are able to convert a considerable proportion of the compound to at least twelve non-volatile acid products. One of these is a conjugate of I with an unidentified material. A major component of the products is 2-hydroxyethylphosphonic acid (II), which is itself converted to a number of compounds in leaves. The application of I to bark from mature Hevea, results in the formation of a single substance which is also a conjugate of I. Neither I nor II is effective in inducing the formation of ethylene from endogenous precursors in vegetative Hevea tissue. Ethylene is poorly metabolized by Hevea leaves and the evidence available indicates that it is unlikely that any of the compounds produced from I are metabolites of ethylene.
Assuntos
Compostos Organofosforados/metabolismo , Reguladores de Crescimento de Plantas/metabolismo , Árvores , Autorradiografia , Cromatografia Gasosa , Cloreto de Etil/análogos & derivados , Cloreto de Etil/análise , Cloreto de Etil/metabolismo , Etilenos/metabolismo , Compostos Organofosforados/análise , Extratos Vegetais/análise , Reguladores de Crescimento de Plantas/análise , Fatores de TempoRESUMO
In July the yield of protein extractable from potato haulm could be 600 kg/ha and the beginning of September it is 200 kg/ha. The yield of fiber containing 1 to 2% N is less affected by maturity. The annual waste of extractable protein, suitable for feeding nonruminants, is about 60,000 tons. The contribution that some small changes in conventional potato husbandry might make to minimizing this waste is discussed.
