RESUMO
Shocked Bamle enstatite partly transforms to disordered enstatite. Debye-Scherrer patterns of some shocked material are almost identical to those of disordered enstatite from portions of various enstatite achondrites. No disorcdered single crystals have been found.
RESUMO
A variety of mycobacterial organisms may infect patients with acquired immunodeficiency syndrome. A patient with acquired immunodeficiency syndrome, lymphoma, and sporotrichoid Mycobacterium marinum is described. The patient responded completely to antimycobacterial therapy but relapsed when he discontinued his medications six months into his course. Disease persistence in spite of therapy had been noted in other immunocompromised states but not previously in acquired immunodeficiency syndrome. Patients with acquired immunodeficiency syndrome may require prolonged treatment or suppressive therapy for Mycobacterium marinum infections.
Assuntos
Infecções Oportunistas Relacionadas com a AIDS/complicações , Síndrome da Imunodeficiência Adquirida/complicações , Linfoma Relacionado a AIDS/complicações , Linfoma de Células B/complicações , Linfoma não Hodgkin/complicações , Infecções por Mycobacterium não Tuberculosas/complicações , Dermatopatias Infecciosas/complicações , Infecções Oportunistas Relacionadas com a AIDS/diagnóstico , Infecções Oportunistas Relacionadas com a AIDS/tratamento farmacológico , Adulto , Antituberculosos/uso terapêutico , Quimioterapia Combinada , Humanos , Linfoma Relacionado a AIDS/tratamento farmacológico , Linfoma de Células B/tratamento farmacológico , Linfoma não Hodgkin/tratamento farmacológico , Masculino , Infecções por Mycobacterium não Tuberculosas/diagnóstico , Infecções por Mycobacterium não Tuberculosas/tratamento farmacológico , Dermatopatias Infecciosas/diagnóstico , Dermatopatias Infecciosas/tratamento farmacológicoRESUMO
X-ray diffraction data from samples of 20, 60 and 100 mug quartz on poly-vinyl chloride membrane filters have been collected using a rotating anode x-ray source. These data suggest that 17 mug of quartz or possibly less could be measured directly on 35 mm diameter filters without any type of pretreatment.
Assuntos
Filtração , Quartzo/análise , Dióxido de Silício/análise , Difração de Raios X , Poeira/análise , Métodos , PolivinilRESUMO
Wide variations were found in the rate of chemical and microbiological leaching of iron from pyritic materials from various sources. Thiobacillus ferrooxidans accelerated leaching of iron from all of the pyritic materials tested in shake flask suspensions at loadings of 0.4% (wt/vol) pulp density. The most chemically reactive pyrites exhibited the fastest bioleaching rates. However, at 2.0% pulp density, a delay in onset of bioleaching occurred with two of the pyrites derived from coal sources. T. ferrooxidans was unable to oxidize the most chemically reactive pyrite at 2.0% pulp density. No inhibition of pyrite oxidation by T. ferrooxidans occurred with mineral pyrite at 2.0% pulp density. Experiments with the most chemically reactive pyrite indicated that the leachates from the material were not inhibitory to iron oxidation by T. ferrooxidans.