THE VEGETATION OF THE HOT SPRINGS OF YELLOWSTONE PARK
نویسندگان
چکیده
منابع مشابه
Mycobacterium parascrofulaceum in acidic hot springs in Yellowstone National Park.
Mycobacterium parascrofulaceum was found in Norris Geyser Basin, Yellowstone National Park, in a system composed of two acidic (pH 3.0) springs with temperatures between 56 degrees C at the source and 40 degrees C at the confluence of both springs. Growth and survival assays at 56 degrees C for 60 days were performed, confirming the origin of the strain.
متن کاملCharacterization of some thermophilic bacteria from the Hot Springs of Yellowstone National Park.
Extensive enzymatic studies have been conducted on cell-free fractions from a thermophilic bacterium designated as National Canners Association strain 2184 and tentativelv identified as Bacillus stearothermophilus Donk (1920), (Militzer et al., 1949, 1950, 1951, 1952; Georgi et al., 1951; h'Iarsh and Militzer, 1952). Preparatory to extending these investigations to other thermophilic bacteria, ...
متن کاملDepositional facies and aqueous-solid geochemistry of travertine-depositing hot springs (Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, U.S.A.).
Petrographic and geochemical analyses of travertine-depositing hot springs at Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, have been used to define five depositional facies along the spring drainage system. Spring waters are expelled in the vent facies at 71 to 73 degrees C and precipitate mounded travertine composed of aragonite needle botryoids. The apron and channel facies ...
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چکیده هدف اصلی از طراحی لرزه ای تامین ایمنی جانی در هنگام وقوع زلزله و تعمیر پذیر بودن سازه خسارت دیده، پس از وقوع زلزله است. تجربه زلزله های اخیر نشان داده است که ساختمان های طراحی شده با آیین نامه های مبتنی بر نیرو از نظر محدود نمودن خسارت وارده بر سازه دقت لازم را ندارند. این امر سبب پیدایش نسل جدید آیین نامه های مبتنی بر عملکرد شده است. در این آیین نامه ها بر اساس تغییرشکل های غیرارتجاعی ...
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cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
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ژورنال
عنوان ژورنال: Science
سال: 1897
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.6.135.145