The inhibitory effects of 250 KVP x-radiation on the electroretinographic response (ERG) of the rabbit were investigated. Rabbits were exposed (head only) to either a single dose ranging from 3,000 rad to 8,000 rad or to a fractionated dose, two doses of 3,000 rod each with an interval of 5 days. ERG responses of the dark adapted eyes of the rabbit were determined prior to exposure and at vario...

Speckle-tracking echocardiography (STE) uses a two-dimensional echocardiographic image to estimate two orthogonal strain components. The aim of this study was to assess sensitivity of circumferential (S(circ)) and radial (S(rad)) strains to infarct-induced left ventricular (LV) remodeling and scarring of the LV in a rat. To assess the relationship among S(circ), S(rad), and scar size, two-dimen...

The paper presents a new technique for thermoplastic bending of glass. makes it possible to produce cylindrical surfaces with guide in the form parabola, ellipse, etc. mirrors hard X-ray wavelength range (λ~0.1 nm). Three samples surface an elliptical cylinder were prepared using this technique. production time each sample was two days. deviation and its local angle from calculated values all d...

4.1 Discovering the ELDRE In 1991 Enlow and coworkers made a comparative study between traditional crystalline emitter transistors (BJTs) and polysilicon emitter transistors (PETs) [1]. The work was intended to study the difference in radiation response of these technologies; indeed at this time large amounts of data were available for crystalline transistors, while very little attention had be...

Systemic administration of hypoxia-selective (64)Cu-diacetyl-bis(N(4)-methylthiosemicarbazone) ((64)Cu-ATSM) has increased significantly the survival time of hamsters bearing human GW39 colon cancer tumors. Radiotherapy experiments were performed in animals bearing either 7-day-old (0.5-1.0 g) or 15-day-old (1.5-2.0 g) tumors. Studies compared animals treated with a single dose of 0, 4, 6, 7, 8...

BACKGROUND AND AIMS Rice (Oryza sativa) has the rare ability to germinate and elongate a coleoptile under oxygen-deficient conditions, which include both hypoxia and anoxia. It has previously been shown that ALCOHOL DEHYDROGENASE 1 (ADH1) is required for cell division and cell elongation in the coleoptile of submerged rice seedlings by means of studies using a rice ADH1-deficient mutant, reduce...