The golden hamster is a relatively new animal in the experimental field. Its principle use has been in the study of virus diseases and more recently in poliomyelitis. In addition, the hamster appeared to possess desirable features for nutritional studies. Research was therefore begun in this laboratory on nutrition of...
Studies on poverty have focused predominantly on low income and food poverty. Little or no attention has been given to the emerging problem of adequate calorie intake accompanied by low micronutrient levels, particularly in diets of rural households in transition and developing economies. Micronutrient deficiencies are related to child mortality,...
The experiment under discussion was carried out in
Corvallis, Oregon, during the week beginning Sunday
April 3, 1910 with a family of six persons, consisting of
a mother, who acts as a housekeeper and housemother; a
young man, an instructor in the college; two boys, one in
college and the...
Dietary excesses and imbalances play a prominent role in five of the ten leading causes of death in the U.S. Recognizing that many Americans tend to have poor dietary habits, the government has implemented several nutrition education strategies. Although these efforts have attempted to improve the nutritional status of Americans,...
Two experiments were conducted to determine the
effects of riboflavin and pantothenic acid deficiency
on the production of clubbed down embryos in Single
Combed White Leghorn (SCWL) and Rhode Island Red (RIR)
hens.
In experiment 1, sixteen SCWL and eight RIR hens
were assigned to one of four diets calculated...
The prevalence of exercise-induced menstrual dysfunction (ExMD) ranges between 6-79% in endurance-trained women and may result from a low energy availability (EA; kcal/kgFFM/d). EA is the energy remaining after planned exercise, which is available for basic physiological processes and daily living activities. One mechanism for energy conservation may be a...
Menstrual dysfunction (MD), possibly due to lower energy availability (EA), is prevalent in active women and associated with unfavorable heath consequences. PURPOSE: To determine if EA improvements in endurance-trained women, using a daily Carbohydrate-Protein supplement (CHO-PRO), will restore menstrual function and improve musculoskeletal health. METHODS: Athletes with MD (ExMD; n=8;...
The Warm Springs Reservation is located in central Oregon. Livestock production consists of beef (commercial with an Angus, Horned Hereford base) and roping (Corriente and Longhorn) cattle and horses that forage most of the year on the open range within reservation boundaries. Forage consists of annual and perennial grasses and...
Published January 1996. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published August 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Stand establishment plays a significant role in the development
and yield of winter wheat (Triticum aestivum L.). Availability of
soil moisture to the germinating seed is one of the most critical
factors affecting stand establishment. Water injection is a method
of applying supplemental moisture to the soil in direct contact...
Published March 1943. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Significant post planting mortality of young conifer seedlings often occurs on drought prone sites because seedlings fail to either establish, or maintain favourable water relations. Survival is contingent upon growth which occurs when turgor pressure is above a threshold level. Since growth after planting is influenced by nursery cultural practices,...
Water use restrictions are continuing to have an impact on the way turf is managed today and will be managed in the future. The objective of this research was to evaluate the irrigation requirements of ten newly established cool-season turfgrass species maintained under two different mowing height and nitrogen fertility...
Three Nelder plots of 3-year-old red alder (Alnus rubra Bong) were used for this study at the Cascade Head Experimental Forest, Oregon in the growing season of 1988 at an elevation of 330 meters. Each Nelder plot
represented a range of densities from 238 to 101,219 trees per hectare. The...
Under adverse soil moisture conditions a critical water stress
or water potential develops in the plant and productivity is reduced,
or in extreme cases, terminated. Research to determine the soil
moisture status for maximum production of specific crops has been
conducted for decades. The results have done much to increase...
This investigation was undertaken to obtain information on the
dietary intake of Oregon preschool children and to determine the
effect of certain socio-environmental variables on the nutrient intake
of these children. Three hundred boys and girls who were attending
Well Child or Multiphasic Screening Clinics in 11 counties participated
in...
Folic acid and ascorbic acid status have been assessed in
twenty non-institutionalized elderly subjects with respect to both
hematological and dietary aspects.
The hemoglobins, hematocrits, and serum ascorbic acid
concentrations were within the normal range. A few subjects had
total serum protein concentrations which were less than the acceptable
level....
The effects of improved oral hygiene on the nutrition of 23
elderly institutionalized men and women were investigated. An experimental
group of 12 received professional oral hygiene treatments
three times weekly for a period of five weeks, while a control group
of 11 received only placebo work. Changes in taste...
Ninety people, aged 60 and older, were interviewed regarding
their shopping habits, use of convenience foods, frequency of food
use and reasons for food preferences. The relation of income level
and education level to reasons for food use was also investigated.
The major source of purchased food was the chain...
Published March 1984. Reprinted January 1988. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published January 1993. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published January 1961. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
No-tillage winter wheat (Triticum aestivum L.) grown in a
wheat-fallow cropping system has consistently produced lower grain
yields than conventionally tilled soils in the semiarid Pacific
Northwest. A 2-year study was conducted in a long-term tillage trial
at Moro, OR to determine factors responsible for differences in wheat
growth and...
Effects of bedrock water availability on growth and ecophysiology of Douglas-fir [Pseudotsuga TnenzieSii (Mirb.) Franco) and Pacific madrone (Arbutus inenziesii Pursh) were studied in southwest Oregon in 1990. Bedrock physical features, including bulk density, water holding capacity, and available water capacity, were examined at
different depths from 1.0 to 3.0...
Published September 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Desert plant communities are among the most sensitive to changes in soil water conditions. In areas with shallow aquifers, it is important to understand both the effects of groundwater alterations on vegetation and how changes in surface-soil water affect plant water uptake. Studies in arid environments have evaluated the effect...
Two concurrent studies were conducted to evaluate the effect
of selenium (Se) supplementation on beef cows. Trial 1 was designed
to evaluate the safety and efficacy of two intrareticular Se supplementation
delivery systems. Trial 2 was designed to evaluate the
transfer of Se across the placenta and through the colostrum...
Four studies were conducted to evaluate the effect of varying levels of vitamin
B-6 (B6), protein and pyridoxine glucoside (PNG) on B6 status and requirements of
women. In the first two studies, women were fed a constant protein diet and vitamin
B-6 intakes of 0.84 to 2.39 mg/d during 10-...
The effect of pyridoxine (PN) supplementation on lymphocyte
responsiveness was investigated in 15 elderly volunteers (aged
65-81 years) by measuring lymphocyte proliferation to T and B cell
mitogens, lymphocyte subpopulations with monoclonal antibodies
(T3, T4, T8) and plasma pyridoxal 5'-phosphate (PLP) concentration
at pre-supplementation and after 1 and 2 months...
Published February 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published May 1975. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published March 1965. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Due to the growing complexity, sophistication, and interconnectedness of present day engineered products and services, the use of ontologies in engineering design is becoming more widespread. An ontology provides a standardized way of describing concepts in a domain of interest and the relationships between these concepts to better understand the...
Several methods of infering plant water stress for
irrigation scheduling are based upon measurements of the
environment in which the plants grow. These measurements
include parameters such as soil water content, air
temperature, pan evaporation and incident radiation. It is
hypothesized that improved estimates of plant water deficit
can be...
Estimations of plant water use can provide great assistance to growers, irrigators,
engineers and water resource planners. This is especially true concerning the introduction
of a new crop into irrigated agriculture. Growing hybrid poplar trees for wood chip stock
and veneer production under agronomic practices is currently being explored as...
The purpose of this study was to produce data and information that inform California
Community College decision-makers of: (a) extent of variance in California's associate
degree definitions and graduation requirements, and (b) perceptions of curricular leaders
regarding the variances. Associate degree definitions and graduation requirements were
compiled and analyzed from...
The research presented in this dissertation addresses the Multi-Mode Resource-Constrained Project Scheduling Problem (MMRCPSP) in the presence of resource unavailability. This research is motivated by the scheduling of engineering design tasks in automotive product development to minimize the project completion time, but addresses a general scheduling situation that is applicable...
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6.1 Duration and human resource requirement for each task-mode options ................... 115
A perennial grass grown in strips between the rows of grapevines, with a bare soil herbicide strip under the rows of vines, is a common form of vineyard soil management. Irrigation, though not practiced for grape culture in western Oregon at this time, could be used to supplement the soil...