منابع مشابه
Scale-space Has Been Discovered in Japan
Gaussian scale-space is considered to be a modern bottom-up tool in computer vision. The Amer-ican and European vision community, however, is unaware of the fact that Gaussian scale-space has already been axiomatically derived in 1959 in a Japanese paper by Taizo Iijima. This result formed the starting point of an entire world of linear scale-space research in Japan ranging from various axiomat...
متن کاملA simple type of wood in two Early Devonian plants.
The advent of wood (secondary xylem) is a major event of the Paleozoic Era, facilitating the evolution of large perennial plants. The first steps of wood evolution are unknown. We describe two small Early Devonian (407 to 397 million years ago) plants with secondary xylem including simple rays. Their wood currently represents the earliest evidence of secondary growth in plants. The small size o...
متن کاملSome Fossil Plants of Early Devonian Type from the Walhalla
S of the PAPERS printed in the PHILOSOPHICAL TRANSACTIONS of the ROYAL SOCIETY of LONDON. Yols. 1 to 6 (1800-1854), 8vo, at 10s. each. (Vola. 3, 4 and 6 out of Print.) PROCEEDINGS of the ROYAL SOCIETY of LONDON, being a continuation of the foregoing Series. Vols. 8 to 14, and 16 to 74, 21s. each, cloth. Yol. 75 is composed of Obituary Notices of Fellows Deceased, 1898-1904. Price 15s. With Vol....
متن کاملEndangered vascular plants in Japan
The history of the Red List of Japanese vascular plants is briefly reviewed for editing and research. Especially on the results of recent monitoring, the present status of information and conservation activities on the endangered plants in Japan is discussed and the dynamics of the Japanese flora are taken up, in relation to basic research on plant biodiversity on the Japanese Archipelago. The ...
متن کاملFirst fossil record of parasitism in Devonian calcareous sponges (stromatoporoids).
INTRODUCTION Palaeozoic calcareous sponges (stromatoporoids) are common bio-constructing fossils; they are sometimes found in association with helicoidal structures of unknown biological affinities. The interaction between the tube-forming organisms has usually been classified as commensalism. METHODS About 260 stromatoporoid skeletons from the Middle Devonian (Givetian) of the Mont d'Haurs s...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy
سال: 1950
ISSN: 0021-4280
DOI: 10.2183/pjab1945.26.9_54