170,547 research outputs found
Fort Benning, GA. Rev. Reinert, S.J., Infantry ROTC Camp 1953
No full textFort Benning, GA. Reverend Carl. M. Reinert, S.J. President of Creighton University flanked by Captain John C. Barrett on the left and Lt. Colonel Frances T. Devlin on the right, military science instructors at Creighton, is pictured with the cadets from his university attending the 1953 Infantry ROTC Camp, Fort Benning, Ga
Fort Benning, GA. Rev. Reinert, S.J., Infantry ROTC Camp 1953
No full textFort Benning, GA. Reverend Carl. M. Reinert, S.J. President of Creighton University flanked by Captain John C. Barrett on the left and Lt. Colonel Frances T. Devlin on the right, military science instructors at Creighton, is pictured with the cadets from his university attending the 1953 Infantry ROTC Camp, Fort Benning, Ga
Comparative Proteomics of Chloroplast Envelopes from C-3 and C-4 Plants Reveals Specific Adaptations of the Plastid Envelope to C-4 Photosynthesis and Candidate Proteins Required for Maintaining C-4 Metabolite Fluxes (vol 148, pg 568, 2008)
No full textBräutigam A, Hoffmann-Benning S, Weber APM. Comparative Proteomics of Chloroplast Envelopes from C-3 and C-4 Plants Reveals Specific Adaptations of the Plastid Envelope to C-4 Photosynthesis and Candidate Proteins Required for Maintaining C-4 Metabolite Fluxes (vol 148, pg 568, 2008). Plant Physiology. 2008;148(3):1734
A primal-dual approach for a total variation Wasserstein flow
No full textWe consider a nonlinear fourth-order diffusion equation that arises in denoising of image densities. We propose an implicit time-stepping scheme that employs a primal-dual method for computing the subgradient of the total variation seminorm. The constraint on the dual variable is relaxed by adding a penalty term, depending on a parameter that determines the weight of the penalisation. The paper is furnished with some numerical examples showing the denoising properties of the model considered. © 2013 Springer-Verlag
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Land Cover Differences in Soil Carbon and Nitrogen at Fort Benning, Georgia
No full textLand cover characterization might help land managers assess the impacts of management practices and land cover change on attributes linked to the maintenance and/or recovery of soil quality. However, connections between land cover and measures of soil quality are not well established. The objective of this limited investigation was to examine differences in soil carbon and nitrogen among various land cover types at Fort Benning, Georgia. Forty-one sampling sites were classified into five major land cover types: deciduous forest, mixed forest, evergreen forest or plantation, transitional herbaceous vegetation, and barren land. Key measures of soil quality (including mineral soil density, nitrogen availability, soil carbon and nitrogen stocks, as well as properties and chemistry of the O-horizon) were significantly different among the five land covers. In general, barren land had the poorest soil quality. Barren land, created through disturbance by tracked vehicles and/or erosion, had significantly greater soil density and a substantial loss of carbon and nitrogen relative to soils at less disturbed sites. We estimate that recovery of soil carbon under barren land at Fort Benning to current day levels under transitional vegetation or forests would require about 60 years following reestablishment of vegetation. Maps of soil carbon and nitrogen were produced for Fort Benning based on a 1999 land cover map and field measurements of soil carbon and nitrogen stocks under different land cover categories
Machine Gun Crew, Ft. Benning, GA
No full textFort Benning, Ga. Members of this machine gun crew are Infantry ROTC/cadets from Creighton University attending the six-week ROTC summer camp here. They are (left to right) Oliver W. Parrett, son of Mr. and Mrs. W.O. Parrett, 5916 North 33rd Avenue, Omaha, Nebr.; James W. Knowles, son of Mr. James W. Knowles, Sr., 8536 Dodge Road, Omaha: Thomas J. Begley, son of Mr. and Mrs. Leonard Begley, 3512 Hickory, Omaha, and Lloyd G. Gregerson, son of Mr. and Mrs. Lloyd O. Gregerson, 3539 Avenue C, Council Bluffs, Iowa. Over 2000 ROTC cadets representing 69 colleges and universities are taking summer training here this year. Credit: U.S. Army Photo. Public Information Office, Hqs., The Infantry Center, Fort Benning, Georgia. Please Credit U.S. Army Photograph. The Department has no objection to the publication of this photograph. Its use in commercial advertisement must be approved by the Public Information, Department of the Army, the Pentagon, Washington 25, D.C.. 05-010?AL-55 Signal Corp Photo Lab, Fort Carlson, Colorado
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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Effects of Heavy, Tracked-Vehicle Disturbance on Forest Soil Properties at Fort Benning, Georgia
No full textThe purpose of this report is to describe the effects of heavy, tracked-vehicle disturbance on various measures of soil quality in training compartment K-11 at Fort Benning, Georgia. Predisturbance soil sampling in April and October of 2002 indicated statistically significant differences in soil properties between upland and riparian sites. Soil density was less at riparian sites, but riparian soils had significantly greater C and N concentrations and stocks than upland soils. Most of the C stock in riparian soils was associated with mineral-associated organic matter (i.e., the silt + clay fraction physically separated from whole mineral soil). Topographic differences in soil N availability were highly dependent on the time of sampling. Riparian soils had higher concentrations of extractable inorganic N than upland soils and also exhibited significantly greater soil N availability during the spring sampling. The disturbance experiment was performed in May 2003 by driving a D7 bulldozer through the mixed pine/hardwood forest. Post-disturbance sampling was limited to upland sites because training with heavy, tracked vehicles at Fort Benning is generally confined to upland soils. Soil sampling approximately one month after the experiment indicated that effects of the bulldozer were limited primarily to the forest floor (O-horizon) and the surface (0-10 cm) mineral soil. O-horizon dry mass and C stocks were significantly reduced, relative to undisturbed sites, and there was an indication of reduced mineral soil C stocks in the disturbance zone. Differences in the surface (0-10 cm) mineral soil also indicated a significant increase in soil density as a result of disturbance by the bulldozer. Although there was some tendency for greater soil N availability in disturbed soils, the changes were not significantly different from undisturbed controls. It is expected that repeated soil disturbance over time, which will normally occur in a military training area, would simply intensify the changes in soil properties that were measured following a one-time soil disturbance at the K-11 training compartment. The experiment was also useful for identifying soil measurements that are particularly sensitive to disturbance and therefore can be used successfully as indicators of a change in soil properties as a result of heavy, tracked-vehicle traffic at Fort Benning. Measurements related to total O-horizon mass and C concentrations or stocks exhibited changes that ranged from {approx}25 to 75% following the one-time disturbance. Changes in surface (0-10 cm) mineral soil density or measures of surface soil C and N following the disturbance were less remarkable and ranged from {approx}15 to 45% (relative to undisturbed controls). Soil N availability (measured as initial extractable soil N or N production in laboratory incubations) was the least sensitive and the least useful indicator for detecting a change in soil quality. Collectively, the results suggest that the best indicators of a change in soil quality will be found at the soil surface because there were no statistically significant effects of bulldozer disturbance at soil depths below 10 cm
The size and polydispersity of silica nanoparticles under simulated hot spring conditions
No full textThe nucleation and growth of silica nanoparticles in supersaturated geothermal waters was simulated using a flow-through geothermal simulator system. The effect of silica concentration ([SiO2]), ionic strength (IS), temperature (T) and organic additives on the size and polydispersity of the forming silica nanoparticles was quantified. A decrease in temperature (58 to 33°C) and the addition of glucose restricted particle growth to sizes <20 nm, while varying [SiO2] or ISdid not affect the size (30-35 nm) and polydispersity (±9 nm) observed at 58°C. Conversely, the addition of xanthan gum induced the development of thin films that enhanced silica aggregation
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