The bacteria colonizing geologic core sections (attached) were contrasted with those found suspended in the groundwater (unattached) by examining the microbiology of 16 depth-paired core and groundwater samples using a suite of culture-independent and culture-dependent analyses. One hundred twenty-two meters was continuously cored from a buried chalcopyrite ore hosted in...
Over the continental shelf at 15°S off Peru, sigma-t is a well-defined
function of temperature (Figure 1) and hence temperature alone may be used
to monitor the changes in stratification, to test the thermal wind equation,
and to monitor the hydrographic response to wind events. In this report we
present...
Green sea turtles, Chelonia mydas, have endangered and threatened populations globally, but several populations show signs of population recovery. In Hawaii, nesting female green turtles have increased 5.7% year⁻¹ since 1973, but wide fluctuations in census counts of nesting females make recovery diagnosis difficult. For effective management planning, it is...
With over 800 languages spoken on the continent of
Africa, inter-cultural communication has always been difficult.
In addition, many of the peoples of Africa have
experienced colonial oppression. Various powers have
sought to interfere with intra-cultural dialogues and the
free flow of information. Their effectiveness, however,
was limited because of...
Whole blood selenium levels were measured in 207 horses, representing 41 ranches and 11 regions throughout Oregon. Age, sex,
diet, and history of disease were recorded. Diet was divided into
three categories; local feed only, commercial feed, and Se supplemented feed. Region (p<.01), diet type (p<.01), and a region x...
In twentieth century America, women continue the age-old struggle for recognition
as whole, intelligent individuals, not just an "other," less hearty, less deserving
or less capable being than man. Sarah Grimke spoke of the inequalities over 150 years
ago during the abolitionist movement when she compiled her major arguments into...
Authentic assessment of visitor learning in museum settings is a challenging
endeavor. Evaluation literature includes very few studies that link adult visitors' behavior
to their learning. Multiple data collection methods in a naturalistic environment hold
great promise for increasing understanding of informal public education.
In 1997, Oregon State University's Hatfield...
Adult dusky Canada geese (Branta canadensis
occidentalis Baird) were banded with plastic neck bands and
observed on the winter range during 1985-92. Annual
survival rates of adult geese estimated from observation
data ranged from 76% to 85%. A model of Canada goose
population dynamics was developed to illustrate
relationships between...
Soil organic matter (SOM) is the terrestrial biosphere's largest pool of organic carbon (C) and is an integral part of C cycling globally. Soil organic matter composition typically can be traced directly back to the type of detrital inputs; however, the stabilization of SOM results as a combination of chemical...
The controversial condition of carbohydrate craving is believed by some
researchers to be a defect in the regulation of food intake by an individual.
This defect is believed to be responsible for the inability of some persons to
control their food intake and therefore their weight. Research was conducted
to...
The purpose of this research was to examine some of
the factors which may affect body composition of
postmenopausal women. The effect of estrogen, physical
activity, diet and lifestyle were examined in 9 women
receiving estrogen replacement therapy and 11 women not
using this drug. For 3 consecutive days, the...
The travel cost method of deriving demand and value of recreation
does not include fixed costs of recreational durable goods purchases
or allow for supply restrictions on the number of suitable
sites available. The omission of these two real-world situations
results in derivation of demand curves which are more inelastic...
Two-year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings from two seed lots of different predicted hardiness levels were grown in two separate nurseries. Seedlings were lifted every four weeks from early October 1991 through March 1992 and exposed to controlled freezing temperatures. Fluorescence emissions of the seedlings were measured prior...
Phosphorodiamidate morpholino oligomers (PMOs) are novel antisense drugs in the early stages
of development. These synthetic DNA mimics contain the same bases found in DNA and anneal
to RNA in a complementary fashion. PMOs have been designed that target genes responsible for
producing essential proteins in organisms such as Escherichia...
In 1992, amendments to the Fishing and Aquaculture Law required rural communities
to organize into syndicates or cooperatives and to create resource management plans.
Once the Chilean Fisheries Service (SERNAP) approves these plans, villages could manage designated subtidal and intertidal areas. In response to these amendments, two villages, Puerto Aldea...
One of the most commonly diagnosed illnesses in the elderly population is cancer. Despite research to explain the consistent increase in incidence rates with age, the mechanisms are largely unknown. In order to explore the patterns in age-specific cancer incidence through visualization, tables and graphs were generated via SEER*stat of...
Submillimeter depth distributions of total dissolved inorganic carbon (DIC) were derived from pH and PCO2 profiles measured with microelectrodes in an organic-rich, laboratory-maintained sediment. The DTC profiles were used to calculate diffusive fluxes of DIC across the sediment-water interface. In two experiments, the calculated diffusive fluxes fell within ±50% of...
Published May 1985. 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
Embryonic diapause is a reproductive strategy widespread in the animal kingdom. This phenomenon is defined by a temporary arrest in blastocyst growth and metabolic activity within a quiescent uterus without implantation until the environmental and maternal milieu become favorable for pregnancy to progress. We found that uterine Msx expression persists...
Embryonic diapause is a reproductive strategy widespread in the animal kingdom. This phenomenon is defined by a temporary arrest in blastocyst growth and metabolic activity within a quiescent uterus without implantation until the environmental and maternal milieu become favorable for pregnancy to progress. We found that uterine Msx expression persists...
Full Text:
Jeeyeon Cha‡1, Kristin E. Burnum-Johnson§1, Amanda Bartos‡, Yingju Li‡, Erin S. Baker§, Susan C. Tilton
Recent studies have suggested that the marine contribution of methane from shallow regions and melting marine-terminating glaciers may have been underestimated. Here we report on methane sources and potential sinks associated with methane seeps in Cumberland Bay, South Georgia's largest fjord system. The average organic carbon content in the upper...
Spring Chinook Salmon Oncorhynchus tshawytscha are transported above dams in the Willamette River to provide access to blocked spawning habitat. However, 30–95% of these transplants may die before spawning in some years. To varying degrees, salmon in other tributaries—both blocked and unblocked—have similar prespawn mortality (PSM) rates. Our study determined...
Violations of one or more of the assumptions made In analysis of
variance (ANOVA) or linear regression analysis may lead to erroneous
results. Often data will not conform to the assumptions implicit in the
analyses, but transforming the data to a different scale may lead to an
appropriate model. Before...
Birth defects may influence the risk of childhood cancer development through a variety of mechanisms. The rarity of both birth defects and childhood cancers makes it challenging to study these associations, particularly for the very rare instances of each. To address this limitation, the authors conducted a record linkage-based cohort...
Adverse effects on mechanical properties from using a supercritical fluid (SCF) to increase preservative penetration of refractory woods were evaluated by treating small ponderosa pine sapwood specimens with supercritical carbon dioxide at 64 combinations of temperatures (35 to 80 C), pressure (1,000 to 4,000 psig), and time (0.5 to 2...
The U.S. Commission on Ocean Policy (USCOP) has articulated a set of overarching Guiding Principles to frame the creation of a new national ocean policy. When taken collectively, these principles provide a careful, circumspect, and ambitious context from which to develop policies that will promote vibrant coastal communities, healthy and...
Background: High birthweight is an established risk factor for childhood leukaemia.
Its association with other childhood cancers is less clear, with studies hampered by low
case numbers. Methods: We used two large independent datasets to explore risk associations between
birthweight and all subtypes of childhood cancer. Data for 16 554...
Background: High birthweight is an established risk factor for childhood leukaemia.
Its association with other childhood cancers is less clear, with studies hampered by low
case numbers. Methods: We used two large independent datasets to explore risk associations between
birthweight and all subtypes of childhood cancer. Data for 16 554...
Full Text:
sex) and excluding cases and controls from the California dataset.
e Cancers which were
Background: High birthweight is an established risk factor for childhood leukaemia.
Its association with other childhood cancers is less clear, with studies hampered by low
case numbers. Methods: We used two large independent datasets to explore risk associations between
birthweight and all subtypes of childhood cancer. Data for 16 554...
Background: High birthweight is an established risk factor for childhood leukaemia.
Its association with other childhood cancers is less clear, with studies hampered by low
case numbers. Methods: We used two large independent datasets to explore risk associations between
birthweight and all subtypes of childhood cancer. Data for 16 554...
Full Text:
*† Michael FG Murphy,2,4† Kathryn J Bunch,3,4
SusanE Puumala,5 SusanE Carozza,6 Eric J Chow,7 Beth A
Background: High birthweight is an established risk factor for childhood leukaemia. Its association with other childhood cancers is less clear, with studies hampered by low case numbers. Methods: We used two large independent datasets to explore risk associations between birthweight and all subtypes of childhood cancer. Data for 16 554...
Research on community forests, primarily governed and managed by local forest users, in the United States is limited, despite their growth in numbers over the past decade. We conducted a survey to inventory CFs in the U.S., and better understand their ownership and governance structures, management objectives, benefits, and financing....
Exposure to microbial pathogens is the primary concern of sanitary sewer overflows; however, sewage spills may also be a significant source of toxic metals, including methylmercury (MeHg). Between November 2015 and January 2017, after Hurricane Joaquin, surface water samples were collected routinely from three creeks in Columbia, SC. Routine sampling...
Humpback whales (Megaptera novaeangliae), a mysticete with a cosmopolitan distribution, demonstrate
marked behavioural plasticity. Recent studies show evidence of social learning in the transmission of specific
population level traits ranging from complex singing to stereotyped prey capturing behaviour. Humpback
whales have been observed to employ group foraging techniques, however details...