منابع مشابه
A subterranean ark
this ominous distinction. Elkhorn used to be the dominant species in shallow waters of the Caribbean, with a distribution range from Biscayne National Park, Florida, to the coast of Venezuela. Researchers believe that its abundance has been reduced by over 95% since 1980. Staghorn is the fastest-growing Western Atlantic coral and used to be found throughout the Caribbean. Its population has dec...
متن کاملSubterranean termite invaSion originS
Subterranean termites in the genus Coptotermes Holmgren are structural pests that have become globally distributed beyond their native range in Southeast Asia. Because of their destructive nature, it is useful to understand the pathways of their spread. Additionally, phylogenetic analysis of evolutionary relationships may lead to increased accuracy of insecticide-based management on the basis t...
متن کاملdetection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts
in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...
Duality of terrestrial subterranean fauna
INTRODUCTION There are two time frames in considering terrestrial subterranean ecology, the classical period of 1832−1980 dealing with caves, and the modern period after the 1980s when a wide range of other subterranean habitats were also considered. After Schmidt (1832) published the first scientific description of an invertebrate well adapted for living in hypogean habitats, the beetle Leptod...
متن کاملRecent developments in subterranean robotics
Robotic systems exhibit remarkable capability for exploring and mapping subterranean voids. Information about subterranean spaces has immense value for civil, security, and commercial applications where problems, such as encroachment, collapse, flooding and subsidence can occur. Contemporary method for underground mapping, such as human surveys and geophysical techniques, can provide estimates ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1902
ISSN: 0006-8071
DOI: 10.1086/328235