The objective of this paper was to measure and compare the heat transfer coefficient and pressure drop of R404A and two potential replacement candidate refrigerants with a lower global warming potential, R448A and R452A. Experiments were conducted inside a 4.7 mm horizontal tube at mass fluxes ranging from 100 to...
Mefenoxam and fosetyl-Al are common fungicides used to supplement
disease control of Pythium damping-off and root rot in forest nurseries
of the western United States. However, it is unknown whether fungicide-resistant Pythium isolates are present or whether new fungicide
and biological treatments might also provide supplemental disease
control. Isolates of...
Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide...
The development of a least squares model for the
determination of compliance constants from various combinations
of vibration frequency, mean square amplitudes
of vibration and centrifugal distortion data is discussed.
The resultant model is applied to frequency and mean square
amplitude data for NO₂ and N₂O₄ and to frequency and...
Douglas-fir needle midge (Contarinia pseudotsugae, Diptera: Cecidomyiidae) is a native invasive species in Pacific Northwest Christmas tree farms, seed orchards, and nurseries where Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) is present. Douglas-fir needle midge (DFNM) causes discoloration and galls on the needles, thereby it affects the market value of the Christmas...
Torsion test was evaluated as a method to determine the shear strength
parallel to grain of full-size structural composite lumber (SCL). Experimental
results of eighty-five rectangular (44 x 140 mm²) specimens were verified by finite
element analysis. Laminated strand lumber (LSL), laminated veneer lumber
(LVL) and parallel strand lumber (PSL)...
Wood is a major pool of organic carbon that is highly resistant to decay, owing largely to the presence of lignin. The only organisms capable of substantial lignin decay are white rot fungi in the Agaricomycetes, which also contains non–lignin-degrading brown rot and ectomycorrhizal species. Comparative analyses of 31 fungal...
Full Text:
://www.expasy.org/sprot/), KEGG (20), and KOG (21). KEGG hits were used to assign EC
numbers (http://www.expasy.org
The objective of this research was to investigate
the physiological effects of body posture on cycling.
The familiar positions of bicycle riding have been the
touring posture (hands stretched on top handlebar) and
the racing posture (hands bent at the elbow, with the
back horizontal). However, a relatively new stance...
This manual is intended for forest land owners and managers who want to understand and prevent unnecessary forest damage from insects. This manual covers only insects that infest living trees, not those that infest dead wood.
The manual is organized into chapters based on the part of the tree that...
Designed for forest owners and managers who want to prevent and manage insect damage in living trees (does not cover insects that infest dead wood). Six chapters discuss insects that affect tree foliage, shoots and twigs, trunks and large branches, and roots. Explains the effects of forest practices, such as...