196,380 research outputs found
Climate variation, carbon flux, and bioturbation in the abyssal North Pacific
No full textWe hypothesized that seasonal and interannual climate-mediated changes in particulate organic carbon (POC)
flux would affect bioturbation and ultimately the sequestration of organic carbon in the deep sea. An 18-yr timeseries
photographic record from 4100-m depth in the northeast Pacific Ocean showed increased abundance of
Echinocrepis rostrata, a common epibenthic echinoid and bioturbator, since the late 1990s. Abundance, size, and
speed data were used to estimate bioturbation potential to track long-term changes in the volume of sediment
disturbed by E. rostrata. There was no secular increase in E. rostrata bioturbation over 18 yr despite increased
population size, although periodic variations in bioturbation were significantly correlated with POC flux.
Expected changes in POC flux and bioturbation rates due to climate variation could lead to altered rates of
carbon sequestration in deep-sea sediments, affecting the global carbon cycle
White blood cells in obesity and diabetes : effects of weight loss and normalization of glucose metabolism
No full text
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Temporal changes in gas hydrate mound topography and ecology: deep-sea time-lapse camera observations
No full textA deep-sea time-lapse camera and several temperature probes were deployed on the Gulf of Mexico continental shelf at a biological community associated with a gas hydrate outcropping to study topographic and hydrologic changes over time. The deployment site, Bush Hill (GC 185), is located at 27��47.5' N and 91��15.0' W at depths of ~540m. The digital camera recorded one still image every six hours for three months in 2001, every two hours for the month of June 2002 and every six hours for the month of July 2002. Temperature probes were in place at the site for the entire experimental period. The data recovered provide a record of processes that occur at gas hydrate mounds. Biological activity was documented by identifying the fauna observed in the time-lapse record and recording the number of individuals and species in each image. 1,381 individual organisms representing 16 species were observed. Sediment resuspension and redistribution were regular occurrences during the deployment periods. By digitally analyzing the luminosity of the water column above the mound and plotting the results over time, the turbidity at the site was quantified. A significant diurnal pattern can be seen in both luminosity and temperature records, indicating a possible tidal or inertial component to deep-sea currents in this area. Contrary to expectations, there was no major change in shape or size of the gas hydrate outcrop at this site on the time frame of this study. This indicates that this particular mound was more stable than suggested by laboratory studies and prior in situ observations. The stable topography of the gas hydrate mound combined with high bacterial activity and sediment turnover appears to focus benthic predatory activity in the mound area. The frequency and recurrence of sediment resuspension indicates that short-term change in the depth and distribution of surface sediments is a feature of the benthos at the site. Because the sediment interface is a critical environment for hydrocarbon oxidation and chemosynthesis, short-term variability and heterogeneity may be important characteristics of these settings
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Laparoscopic gastric banding prevents Type 2 diabetes and arterial hypertension in morbid (grade 3) obesity : a 4 years study
No full textResults: Obese subjects are at risk of type 2 diabetes (T2DM) and arterial hypertension, and lifestyle changes and pharmacologic treatment with metformin have been shown to prevent type 2 diabetes in obese IGT subjects. In this study we evaluated glucose tolerance (GT, through OGTT, 75 g), fasting insulin and blood glucose, HOMA index, and arterial hypertension at baseline and after 4 years in subjects treated with laparoscopic gastric banding (LAGB) and in subjects refusing LAGB (Table 1). Subjects undergoing LAGB had a significant decrease of BMI, HOMA index, and a significant improvement in GT (3 T2DM improved to IGT or NGT, 10 IGT improved to NGT, and only 1 subject progressed from NGT to IGT; no new cases of T2DM occurred, and only 1 subject developed hypertension. Subjects refusing LAGB had no change of BMI, HOMA index, and 6 subjects had deterioration of GT (4 new cases of T2DM, 2 progression from NGT to IGT; 3 IGT improved to NGT, and 1 T2DM improved to IGT) and of hypertension (7 new cases). Changes of GT and of hypertension were significant between the 2 groups of subjects (p < 0.05 and <0.01, respectively). At stepwise regression analysis, change of HOMA predicted change of GT and of hypertension. These data indicate that laparoscopic gastric banding prevents type 2 diabetes and arterial hypertension in morbid obesity at least for 4 years
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