Supercritical carbon dioxide (sCO2) experiences a drastic change in its thermophysical properties near the thermodynamic critical point. A non-linear thermophysical property variation can influence the heat transfer behavior of sCO2 which is not predicted well by conventional single phase heat transfer theory. This can become a major hindrance in the...
Alaska-cedar (Chamaecvparis nootkatensIs (D. Don) Spach) is a
valuable tree that is suffering from a serious decline and mortality of
unknown cause throughout southeast Alaska. Epidemiological and
pathological studies were initiated to determine if a pathogen is the
primary cause of this problem. By examining old aerial photographs and
by...
Cryoprotection in stabilized mince from Pacific whiting (Merluccius productus) was investigated by monitoring changes in physical and chemical properties during 32 weeks of frozen storage. The effects of 4 different cryoprotectants were evaluated by torsion test, color analysis, extractability of salt soluble proteins, and formation of dimethylamine (DMA) and 2-thiobarbituric...
A sediment production and infiltration study was conducted
within the Oregon Range Validation Project Work
Area in east-central Oregon during the summers of 1977 and
1978. High intensity rainfall was simulated by using a
Rocky Mountain Infiltrometer. This sprinkler-type infiltrometer
closely approximates conditions associated
with natural rainfall.
The basic ecological...
All attempted synthesis of perfluoroalkyl boron bonded groups
have resulted in the formation of boron-fluorine bonds from the
probable decomposition by α-fluorine transfer. The substance alkali
metal di-n- butylborate (I) has been identified as the potassium derivative
by its reaction with di-n-butylboron chloride and isolation of
potassium chloride. The reaction...
Understanding structural evolution in solids as composition changes is essential to materials properties prediction. Such structure-properties relationships are the theme of solid state chemistry. Materials scientists and chemists have utilized an abundance of simple crystal structures to enhance understanding of chemical and structural origins of properties in materials for decades....
Many bridges along the Gulf Coast of the United States were damaged by recent hurricanes, and many more are susceptible to similar damage. This research examines performance of common anchorage connection details for AASHTO Type III prestressed concrete girders used by some transportation agencies. Full-scale specimens were fabricated and tested...