Traditionally, various vacuum-based processes have been used for producing interference-type anti-reflection (AR) coatings on large area substrates for different commercial applications. In this paper, the development of sol-gel derived AR coating on large plastic substrates for display application is presented. The sol-gel dip coating process was used to deposit thin films on large size plastic panels. By developing solutions with different refractive indices, multi-layer thin-film AR coating stacks were designed and fabricated. Optical constants of the coating materials were characterized by using spectroscopic ellipsometry. Optical, mechanical and environmental tests were performed on the sol-gel derived AR coating stack. These coatings possess good uniformity and meet stringent automotive specifications. This technology has been commercialized successfully for dashboard instrument panel application in Toyota Prius, a new hybrid car. The sol-gel derived AR coating possesses equivalent or superior properties when compared to the major commercially available AR coating products. These AR coated panels are also useful for other commercial applications.
Cerebellar ataxia is most neurological sequelae in heat stroke. Heat stroke with cerebral cortical lesions is very rare. A 39-year-old man was admitted to our hospital because of coma, shock status and hyperthermia on arrival and developed disseminated intravascular coagulation (DIC). Hypotension was transient and all vital signs were resumed to normal within a week. Though normal vital sign, his coma state continued throughout. A diffusion weighted image (DWI) on MRI disclosed abnormal diffuse high intensity in the cerebral and cerebellar cortex without decreased apparent diffusion coefficient (ADC). These cortical changes were supported to the vasogenic edema induced by heat stroke. Four months later after the onset, the abnormal signal intensity in the cerebral and cerebellar cortex disappeared and cortical atrophy with ventricular enlargement developed. Electroencephalogram (EEG) of several times showed no electrical activities. The brain SPECT (123 I-IMP) disclosed all over decreased blood flow. His vegetative state continued.
The effect of a mirror field on field reconnection in an FRC formation stage has been experimentally investigated. Reconnection is promoted when the mirror-field intensity is above a critical value at which the azimuthal electron drift velocity exceeds the ion sound velocity. This implies that the generation of some instabilities is important for the reconnection.
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