Removal of terrestrial DOC in aquatic ecosystems of a temperate river network

Surface waters play a potentially important role in the global carbon balance. Dissolved organic carbon (DOC) fluxes are a major transfer of terrestrial carbon to river systems, and the fate of DOC in aquatic systems is poorly constrained. We used a unique combination of spatially distributed sampling of three DOC fractions throughout a river network and modeling to quantify the net removal of terrestrial DOC during a summer base flow period. We found that aquatic reactivity of terrestrial DOC leading to net loss is low, closer to conservative chloride than to reactive nitrogen. Net removal occurred mainly from the hydrophobic organic acid fraction, while hydrophilic and transphilic acids showed no net change, indicating that partitioning of bulk DOC into different fractions is critical for understanding terrestrial DOC removal. These findings suggest that river systems may have only a modest ability to alter the amounts of terrestrial DOC delivered to coastal zones

The distribution of phosphorus in the humerus of the white rat (Rattus norvegicus albinus) whose growth has been accelerated by growth hormone III, twleve hours after a single injection of radioactive phosphorus

Call number: LD2668 .T4 1953 S25Master of Scienc

The Desmids of Florida

Author Institution: Ohio State Universit

A Study of the Substitute Teacher Program

Substitute teaching is an area of tremendous importance in every school system. It is estimated that there is an average daily absence of 10 per cent among regular faculty members. If the substitute teaching program is ineffective, this means that 10 per cent of all classes and class time is wasted. It is essential that a school system have an effective program to provide for the absences of regular teachers so that there will be no appreciable loss in the educational program

Reliabitliy of weaning weigth or age at weaning as a post growth predictor

Seventy one Dorper lambs weaned at either 75 (n=39) or 105 (n=32) days of age (DOA) were placed on a growing diet and weighed every 7 days to determine body weight and growth rate. The objective of the project was to determine if weaning weight can be used to predict finishing weight. Average daily gain and percentage of body weight growth was calculated for each week as well as the full feeding period as a means of developing a growth curve to characterize the growth pattern of early weaning Dorper lambs. Lambs weaned at 105 DOA were born during the Fall 2016 and the growth period was during the Spring 2017 while the lambs weaned at 75 DOA were born during the Fall 2017 and the growth period was during the Spring 2018. Lambs weaned at 75 DOA averaged 30.4 kg at weaning while those weaned at 105 DOA were 32.1 kg. Following 42 days on feed, the 75 DOA lambs weighed 39.5 kg and the 105 DOA lambs weighed 40.0 kg. As a percentage of weaning weight the 105 DOA lambs were 142% of weaning weights while the 75 DOA lambs 131% of their weaning weights. This is a minimal difference in both percentage of weaning weights and actual weights, it appears that age at weaning might be as important or more than weaning weight in predicting post weaning growth. However, variation between two years suggests that more years of data are required to develop a reliable prediction equation.Freshmen Research Progra

The Burden of Specific Symptoms Reported by Survivors After Critical Illness

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Geography, environment, and colonization history interact with morph type to shape genomic variation in an Arctic fish

Funding Information: Thanks go to our editor and three anonymous reviewers whose suggestions greatly improved this study. We thank S. Avery, J. Callahan, S. Duffy, S. Hann, L. Pike, R. Solomon, A. Walsh, for assistance with sample collection and fieldwork. We are grateful to X. Dallaire and J.S. Moore for providing samples from Ungava, Bay (HAB) and to L. Bernatchez for his valuable comments on an earlier version of this manuscript. Thanks to Parks Canada for allowing us access to the Torngat Mountains National Park and the Nunatsiavut government for allowing us to collect samples from their lands. Thanks to A. Belay at Mount Sinai Hospital for her help with sequencing, A. Mesmer for help with genotyping, and S. Lehnert for insightful data analysis suggestions. We also thank the Institute for Biodiversity, Ecosystem Science, and Sustainability of the Department of Environment and Conservation of the Government of Labrador and Newfoundland for funding for this project; NSERC for the Strategic Grant STPGP 430198 and Discovery Grant awarded to DER, for the CGS‐D awarded to SJS; the Killam Trust for the Level 2 Izaak awarded to SJS; and the Government of Nova Scotia for the Graduate Scholarship awarded to SJS. Publisher Copyright: © 2023 The Authors. Molecular Ecology published by John Wiley & Sons Ltd.Peer reviewedPublisher PD

Combining ERP and Structural MRI Information in First Episode Schizophrenia and Bipolar Disorder

The electrical activity in the electroencephalogram (EEG) and the event-related potentials extracted from the EEG provide the greatest temporal resolution for examining brain function. When coupled with the high spatial resolution of structural magnetic resonance imaging (sMRI), the combined techniques provide a powerful tool for neuroscience in the examination of brain abnormalities in major psychiatric illnesses. Over the last 20 years, our work has examined brain structure and function in schizophrenia. Both EEG and MRI measures have indicated profound abnormalities in schizophrenia within the temporal lobe, particularly marked over the left hemisphere. Our studies of patients first hospitalized due to psychosis revealed the early course of the disease to be characterized by progressive impairment and cortical gray matter reduction, most intense near the time of first hospitalization. Knowledge of those locations and brain signals affected early should help understand the basic physiological defect underlying this progression, with potential implications for new therapeutic interventions