RESUMEN
The preparation of tamarind fruit seed granular activated carbon (TSAC) by microwave induced chemical activation for the adsorptive treatment of semi-aerobic landfill leachate has been attempted. The chemical and physical properties of TSAC were examined. A series of column tests were performed to determine the breakthrough characteristics, by varying the operational parameters, hydraulic loading rate (5-20 mL/min) and adsorbent bed height (15-21 cm). Ammonical nitrogen and chemical oxygen demand (COD), which provide a prerequisite insight into the prediction of leachate quality was quantified. Results illustrated an encouraging performance for the adsorptive removal of ammonical nitrogen and COD, with the highest bed capacity of 84.69 and 55.09 mg/g respectively, at the hydraulic loading rate of 5 mL/min and adsorbent bed height of 21 cm. The dynamic adsorption behavior was satisfactory described by the Thomas and Yoon-Nelson models. The findings demonstrated the applicability of TSAC for the adsorptive treatment of landfill leachate.
Asunto(s)
Carbón Orgánico/química , Frutas/química , Microondas , Semillas/química , Tamarindus/química , Contaminantes Químicos del Agua/aislamiento & purificación , Purificación del Agua/métodos , Adsorción , Biodegradación Ambiental , Análisis de la Demanda Biológica de Oxígeno , Laboratorios , Modelos Teóricos , Nitrógeno/aislamiento & purificación , PorosidadAsunto(s)
Neoplasias Óseas/terapia , Embolización Terapéutica/efectos adversos , Fibrinolíticos/administración & dosificación , Oxigenoterapia Hiperbárica , Hipotermia Inducida , Isquemia de la Médula Espinal/terapia , Terapia Trombolítica , Trombosis/terapia , Arteria Vertebral , Enfermedad Aguda , Angiografía , Neoplasias Óseas/irrigación sanguínea , Neoplasias Óseas/secundario , Terapia Combinada , Imagen de Difusión por Resonancia Magnética , Humanos , Infusiones Intraarteriales , Infusiones Intravenosas , Masculino , Persona de Mediana Edad , Isquemia de la Médula Espinal/diagnóstico , Isquemia de la Médula Espinal/tratamiento farmacológico , Isquemia de la Médula Espinal/etiología , Trombosis/diagnóstico , Trombosis/tratamiento farmacológico , Trombosis/etiología , Resultado del Tratamiento , Arteria Vertebral/diagnóstico por imagenAsunto(s)
Miopía/epidemiología , Adulto , Anciano , Ceguera/etiología , Niño , Preescolar , Escolaridad , Ambiente , Femenino , Predisposición Genética a la Enfermedad , Humanos , Masculino , Persona de Mediana Edad , Personal Militar , Miopía/etiología , Miopía/prevención & control , Programas Nacionales de Salud , Prevalencia , Salud Pública , Investigación , Factores de Riesgo , Singapur/epidemiología , Selección Visual/organización & administraciónRESUMEN
Ninety adults with "mountain cedar" pollen allergy were started on coseasonal immunotherapy regimens in December 1979. At season's end, there were 20 whose starting antigen dose was based on serial dilution end point titration (SDET), 1:2,500 or 1:12,500 weight by volume (w/v); 28 in a "traditional" group started at 1:62,500 w/v; and 28 who had been double-blind placebo control subjects. Injections twice weekly were pushed aggressively toward maintenance. The SDET group received 11 times more antigen than the traditional group; both showed a trend for fewer symptoms than the placebo group. As compared with the other groups, SDET subjects had substantially blunted total and specific IgE responses in season, lower specific IgE level at season's end and less shift of skin end point toward higher dilutions. The findings demonstrate that substantial immunologic effects are possible in the first months of aggressive coseasonal immunotherapy.