منابع مشابه
The Prehistoric Archeology of Mammoth Cave
The prehistory of the Mammoth Cave area has been of interest to archeologists for more than a century because of the remarkable preservation in the dry cave environment. Beginning with the antiquarian search for mummified bodies in the early nineteenth century up to the most modern scientific research, Mammoth Cave has revealed important information about the Native Americans who lived near and...
متن کاملthe survey of the virtual higher education in iran and the ways of its development and improvement
این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.
The Nordic model and its contemporary inhabitants
The societies developed in the Nordic countries attract widespread international attention. These societies are among the richest in the world, they are among the most equal in the world, and their inhabitants seem to be among the happiest in the world. These merits and the fact that these countries are secularised, have (post)modern family structures, and always have been (small) open economie...
متن کاملPhototransduction and clock gene expression in the troglobiont beetle Ptomaphagus hirtus of Mammoth cave.
Obligatory cave species exhibit dramatic trait modifications such as eye reduction, loss of pigmentation and an increase in touch receptors. As molecular studies of cave adaptation have largely concentrated on vertebrate models, it is not yet possible to probe for genetic universalities underlying cave adaptation. We have therefore begun to study the strongly cave-adapted small carrion beetle P...
متن کاملThe Geological Foundation for Prescribed Fire in Mammoth Cave National Park
Karst landscape overview THE 52,830 ACRES OF MAMMOTH CAVE NATIONAL PARK are part of the South-Central Kentucky Karst, which is characterized by subterranean drainage to springs on major rivers. From the southeast to the northwest portion of the landscape (Figure 1), there is a gradient of decreasing maturity in karst development, which corresponds to the regional dip of the bedrock. The major c...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1871
ISSN: 0003-0147,1537-5323
DOI: 10.1086/270866