منابع مشابه
Threshold reduction in pierced microdisk lasers
GaAs microdisk lasers with holes pierced through the disk surface are investigated for their threshold characteristics. Disks are fabricated with either a single hole or two diametrically opposite holes at various distances from the disk outer edge. Even though the disk area is reduced by only 1%, we find that the lasing threshold for a disk with one hole is reduced by up to 50% compared to a d...
متن کاملPierced by the number line: Integers are associated with back-to-front sagittal space
Mathematical cognition, paragon of abstraction, is marked by systematic associations between number and space, often described as “mental number lines.” In three experiments, we demonstrate a novel effect: a sagittal (back-to-front) number line for negative and positive integers. In a paradigm requiring full-body movements, participants judged numerical magnitude (Exp. 1-2) and parity (Exp. 3)....
متن کاملA Potato Glossary A Potato Glossary by Richard
Introduction This glossary has been prepared as a companion to A Potato Chronology. In that work, a self-imposed requirement to limit each entry to a single line forced the use of technical phrases, scientific words, jargon and terminology that may be unfamiliar to many, even to those in the potato business. It is hoped that this glossary will aid those using that chronology, and it is hoped th...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1878
ISSN: 0006-8071
DOI: 10.1086/325198