The oldest members of the huge baby boom cohort (born 1946-1964) will be facing
retirement in the next 10 years. Because of its large size, particularly in relation to the
cohorts that preceded it, the baby boom cohort has distended every social institution that
it has come in contact with...
Tropical forests are of global importance with respect to their influence on
biogeochemical cycles, climatic patterns, and as large reservoirs of biodiversity. Yet, few studies have quantified their structure, biomass, and carbon pools; basic
information necessary to better understand the global function of tropical forests. The RADAMBRASIL project was conducted...
From the 1960s to 1990s, the water quality of Dian Lake (滇池), China's sixth largest freshwater lake located outside the capital of Yunnan Province, Kunming City, rapidly declined causing livelihood disruption, decreased water availability, and biodiversity loss. Despite significant investments in remediation efforts, only small water quality improvements have been...
2 μm average sized silicon powder was nitrided with 90% N₂/10% H₂ in a
fluidized-bed reactor, operated at 1200°C, 1250°C and 1300°C. To fluidize silicon
powder, alumina particles with an average size of 300 μm were used as an inert fluidizing
conditioner. The feasibility and operating conditions of the fluidization...
Two experiments were conducted to evaluate the effects of
gonadotropin releasing hormone (GnRH) on the function of the bovine
corpus luteum during the estrous cycle. In Experiment 1, 10 heifers
were assigned randomly into two groups with each heifer serving as
her own control. Heifers in Group I (n=5) were...
End-to-end models were constructed to examine and compare the trophic structure and energy flow in coastal shelf ecosystems of four US Global Ocean Ecosystem Dynamics (GLOBEC) study regions: the Northern California Current, the Central Gulf of Alaska, Georges Bank, and the Southwestern Antarctic Peninsula. High-quality data collected on system components...
The purpose of this paper is to give a brief description of the volcano, and to report progress in the detailed mapping and petrologic study of its caldera. The increasing use of the Paulina and East Lake areas for recreation and nature study, and widespread interest in the geology aroused...