Larval mortality of leafcutting bee, Megachile pacifica (Panzer)
(= rotundata (F.)), is high, usually exceeding 50%. Parasites and
predators are not a limiting factor in the survival of the progeny.
The disease chalk brood has been an important mortality factor since
1974. Inadequate food supply, pollen and nectar, may affect...
Coal continues to be burned by direct combustion in packed or moving bed in
small size domestic furnaces, medium size industrial furnaces, as well as small power
stations. Recent stringent restrictions on exhaust emissions call for a better
understanding of the process of combustion of coal in beds.
The present...
With the rapid increase of the world energy demand and
consumption, the method and techniques to analyze, improve
and optimize energy conversion systems have to deal not only
with direct fuel exergy (energy) consumption, but also with
other resources, which have associated exergy consumptions,
and with environmental impacts, such as...
Solid-state esophageal manometry was used to study physiology of the normal llama esophagus. Esophageal baseline pressures, esophageal response to water swallows and to balloon distention, and other motor activity of the esophagus during experiments were measured throughout the entire length of the esophagus. Gross and histologic anatomy, muscle fiber type...
When the ambient temperature drops, air-source heat
pumps deliver less heating per unit of power input and
usually cannot provide for the heating load. Therefore,
dual-source heat pumps can offer an attractive alternative.
In the context of this work, a dual-source heat pump
operates as an air-source unit under normal...
Vineyards in Oregon’s Willamette Valley are predominately planted to perennial grass cover in the alleyways of vineyards. This grass cover is grown to increase worker and equipment traction, as well as reduce erosion and manage vine vegetative vigor. However, with increasing frequencies of drought and warming temperatures, the use of...
Ecological restoration is needed to mitigate losses to biodiversity. Restoration success is enhanced through the use of native plant materials that are genetically diverse and locally adapted. Seed transfer zones have been developed to delineate geographic areas where native seed can be collected and distributed with reduced risk of maladaptation....
Purpose
The study was designed to test the effectiveness of a counselor
training experience which used pre-recorded client statements as the
instructional medium. The principal objective of instruction was to
teach counselor trainees to differentiate between the affective and
cognitive content of client statements and to respond in ways which...
This study was to develop and evaluate a shirt pattern for a wheelchair tennis player to improve comfort using reducing garment strain using a CAD program. For that, seven body movements related to garment strain during play were analyzed. In order to develop a pattern, a morphological matrix was used...
