RESUMO
A unified approximate expression for the real part of the susceptibility for collisionally broadened transitions, including line coupling, has been developed. The Hilbert transform has been applied to the impact approximation line shape (Kramers-Kronig relationship) to obtain a result that is applicable from the microwave to the infrared. The approximate function has been compared numerically with the exact result using a newly developed algorithm. The results are applicable to spectral computations of the index of refraction and propagation delays.
RESUMO
An algorithm for the accelerated convolution of the Lorentz function with spectral line data has been developed. The method involves the decomposition of the Lorentz function into subfunctions spanning finite domains. The subfunctions are convolved independently with line data at appropriate sampling intervals. The spectral absorption is obtained by superposition of the independent convolutions. A criterion for the specification of the sampling interval is described.
RESUMO
Oral glucose tolerance and insulin response to glucose were analysed in 124 pregnant women during the fourth quartile of pregnancy. Employing different criteria for the detection of glucose intolerance, 9% to 21% of women were abnormal, and using the H index 43% would have been declared "diabetic". There was no evidence of a progressive change in the glucose curve detectable by the H index within the fourth quartile of pregnancy. There was no association between actual or potential fetal morbidity and any of the interpretative criteria employed. It is concluded that the oral glucose tolerance test should be interpreted with caution if non-pregnant criteria of abnormality are employed.
Assuntos
Teste de Tolerância a Glucose , Glucose/metabolismo , Gravidez em Diabéticas/metabolismo , Peso ao Nascer , Anormalidades Congênitas/etiologia , Diabetes Mellitus/diagnóstico , Diabetes Mellitus/genética , Estudos de Avaliação como Assunto , Feminino , Glicosúria , Humanos , Insulina/sangue , Paridade , Gravidez , Terceiro Trimestre da GravidezRESUMO
A study of forty patients with active lichen planus and a negative family history for diabetes showed that 42% had unequivocally abnormal oral glucose tolerance. The pattern of insulin response to glucose is similar to that seen in typical mild maturity-onset diabetes. There was no association between the presence of glucose intolerance and the duration or type of lesions. None of the patients with glucose intolerance had demonstrable islet-cell antibodies.
