We investigate peculiar Bloch oscillations and interminiband Zener tunneling in a GaAs-based narrow-minigap superlattice up to room temperature, by using terahertz emission spectroscopy under dc bias electric fields. The Bloch oscillations observed previously with a π/2 phase shift at 10 K under relatively low bias fields are found to survive even at 300 K, where thermal energy kT exceeds the relevant minigap (k: Boltzmann constant, T: temperature). Furthermore, the interminiband Zener tunneling under high bias fields leads to a monocyclic terahertz signal with a temperature-dependent subsequent bumpy tail, indicating its occurrence at a few different occasions for Bloch oscillating electrons.
Pirenoxine ophthalmic solution, an anticataract drug for human use , was tested for its effectiveness in the treatment of senile incipient cataract in dogs . Of 18 cases treated with the drug, 13 (72.2%) cases responded favorably resulting in improved lens opacity or delayed progress of the disease . Hyperemia and epiphora, both being local sensitive symptoms, were obsereved in one case . Improved lens opacity was noticeable after medication for 81.6 days on average, and the effect was pronounced in younger cases with cortical cataract.-Key Words: anticataract drug , dog, ophthalmic solution, pirenoxine, senile incipient cataract 1) AUGUSTEYN RC:Jpn
The blood supply of the posterior optic nerve was investigated in 10 monkeys after an injection of synthetic resin into the carotid arteries. The posterior intraorbital and intracanalicular optic nerves were supplied by a centripetal vascular system, formed by the pial vessels arising from the first branches of the ophthalmic artery. Superior and inferior vascular semicircles were detected in the intracanalicular optic nerve. The intracranial optic nerve was supplied by branches of the internal carotid artery, anterior cerebral artery and/or anterior communicating artery, and ophthalmic artery.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.