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Search Results: 1 - 10 of 4484 matches for " Wood BJ "
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Acute bronchospasm and resolution captured on dynamic CT
Amalou H, Wood BJ
Journal of Asthma and Allergy , 2012, DOI: http://dx.doi.org/10.2147/JAA.S36127
Abstract: cute bronchospasm and resolution captured on dynamic CT Case report (1241) Total Article Views Authors: Amalou H, Wood BJ Published Date October 2012 Volume 2012:5 Pages 61 - 63 DOI: http://dx.doi.org/10.2147/JAA.S36127 Received: 19 July 2012 Accepted: 09 August 2012 Published: 31 October 2012 Hayet Amalou, Bradford J Wood Center for Interventional Oncology, NIH Clinical Center, National Institutes of Health, Bethesda, MD, USA Abstract: Computed tomography (CT) imaging provides a noninvasive window beneath the skin, defines lung pathology, and facilitates virtual and multimodality fusion interventions. A CT scan of acute bronchospasm is shown during a CT-guided lung intervention. Dynamic or sequential CT imaging can depict and perhaps even quantify acute reversible bronchospasm, and could potentially play a role in better understanding pharmacologic interventions for reactive airways and the resulting effects.
Acute bronchospasm and resolution captured on dynamic CT
Amalou H,Wood BJ
Journal of Asthma and Allergy , 2012,
Abstract: Hayet Amalou, Bradford J WoodCenter for Interventional Oncology, NIH Clinical Center, National Institutes of Health, Bethesda, MD, USAAbstract: Computed tomography (CT) imaging provides a noninvasive window beneath the skin, defines lung pathology, and facilitates virtual and multimodality fusion interventions. A CT scan of acute bronchospasm is shown during a CT-guided lung intervention. Dynamic or sequential CT imaging can depict and perhaps even quantify acute reversible bronchospasm, and could potentially play a role in better understanding pharmacologic interventions for reactive airways and the resulting effects.Keywords: acute bronchospasm, dynamic CT, albuterol, physiological response, noninvasive
Deriving the Kutta-Joukowsky Equation and Some of Its Generalizations Using Momentum Balances  [PDF]
D. H. Wood
Open Journal of Fluid Dynamics (OJFD) , 2011, DOI: 10.4236/ojfd.2011.11002
Abstract: Momentum balances are used to derive the Kutta-Joukowsky equation for an infinite cascade of aerofoils and an isolated aerofoil. These derivations are simpler than those based on the Blasius theorem or more complex unsteady control volumes, and show the close relationship between a single aerofoil and an infinite cascade. The modification of lift due to the presence of another lifting body is similarly derived for a wing in ground effect, a biplane, and tandem aerofoils. The results are identical to those derived from the vector form of the Kutta-Joukowsky equation.
Radiography of Clavicle Fractures— A Review of the Literature —Do Various Radiographic Views of Clavicle Fractures Affect the Management Plan?  [PDF]
Njalalle Baraza, Thomas Wood
Open Journal of Radiology (OJRad) , 2014, DOI: 10.4236/ojrad.2014.43031
Abstract:

Introduction: Fractures of the clavicle are common and make up 5% - 10% of all fractures. Treatment options in part depend on the location of the fracture along the bone and degree of displacement. These two parameters are best determined by good quality, standardized radiographs of the clavicle. We reviewed the literature to determine the optimal radiographs of clavicle fractures and their influence on the treatment plan. Methods: A comprehensive search of Medline? database was undertaken with the following search terms and MeSH headings: clavicle, fractures, bone, radiography, and X-ray. We included articles in English published from 1950 to present. We ruled out fractures in children, fracture dislocations, open fractures, those with neurological and vascular injuries and fractures involving the acromioclavicular or sternoclavicular joints. Findings: Of the 821 citations obtained, only four studies proved eligible. In the most pertinent, four orthopaedic surgeons were shown standard views (antero-posterior and 20° cephalic tilt) of 50 clavicle fractures and then additional two views (45° cephalic and caudal tilt), and found that alternative views influenced their decision making, with more surgeons opting for surgical fixation. In a different study, it was shown that orthogonal views of the clavicle increased surgeons’ understanding and improved their treatment of these fractures. The third paper was a case series on clavicle fractures that were missed on the initial antero-posterior radiograph, and the fourth paper postulated that postero-anterior views of the thorax were most accurate in determining length of the clavicle. Conclusion: Studies showing an optimal view for assessment of clavicle fractures with a decision to then progressing to operative fixation are few, but the evidence points towards surgical fixation when alternative views of mid-shaft clavicle fractures are present.

The Effects of Psychological Skills Training on Mental Toughness and Psychological Well-Being of Student-Athletes  [PDF]
Jim Golby, Phillippa Wood
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.76092
Abstract:

This study examined the effects of a psychological skills intervention (PST) designed to enhance the mental toughness and psychological well-being of student-athlete rowers (N = 16). Within this context, PWB was conceptualized by an amalgamation of the following psychological constructs; self-esteem, perceived self-efficacy, positive affect and dispositional optimism. Progress was examined at three times evenly dispersed over the course of the six-month intervention, pre-, mid- and post-intervention. The intervention was solution-focused and informed by Dweck’s (2009) theory of a growth mindset and Goldberg’s (1998) psychological strategies to develop mental toughness. The study design was a 2 (group) × 3 (time) two-way MANOVA with repeated measures on one factor (time). Various measures of mental toughness and positive psychological constructs were utilised. Over the course of the intervention, MT significantly improved, in addition to perceived self-efficacy, self-esteem and positive affect. Positive significant relationships were observed between components of MT and each of the positive measures; which lends support to the conceptualization of MT as a positive psychological construct which fosters positive psychological states (Clough & Strycharczyk, 2012). Further research is warranted to examine the development of MT on negative psychological constructs.

Assessing the Impacts of Sea Level Rise Using Existing Data  [PDF]
Frederick Bloetscher, Michael Wood
Journal of Geoscience and Environment Protection (GEP) , 2016, DOI: 10.4236/gep.2016.49012
Abstract: Local communities want to know the cost of improvements needed to their drainage system based on projected sea level rise. Prior research demonstrates that in coastal areas, groundwater will rise with sea level. As a result the combination of groundwater levels and tidal data must be used to predict local impacts of sea level rise on the drainage system. However, it would appear to complicate the situation if the amount of data available for making sea level rise projections with groundwater is limited. The objectives of this task were to identify available data in a data limited community, compare the available data, assess the impact of sea level rise on the community, and its impact on the stormwater system, identify vulnerable areas in the City, provide an estimate of long-term costs for improvements, and provide a toolbox of strategies to employ at the appropriate time. The project was conducted using ArcGIS tools to import tidal, groundwater, topographic LiDAR and infrastructure improvements into GIS software and performing analysis based on current data. The cost of improvements was based on applying actual 2015 construction costs in the subject comments across a larger vulnerable area. It was found that the data sources provided similar results, despite different timelines and dates so did not interfere with the subsequent analysis. The data revealed that over $400 million in current dollars might be needed to address stormwater issues arising from sea level rise before 2100.
Application of Pedagogical Perspectives in the Teaching and Training of New Cataract Surgeons—A Literature-Based Essay  [PDF]
Bj?rn Johansson
Open Journal of Ophthalmology (OJOph) , 2013, DOI: 10.4236/ojoph.2013.33015
Abstract:

Cataract is the most common cause of visual impairment that can be effectively treated by surgery and cataract surgery is the most commonly performed surgical procedure in the world. With modern cataract operation techniques, patients expect excellent results. Teaching and training of new surgeons involve both pedagogical and ethical challenges for teachers and trainees, and also may pose a potential risk to patients. This literature-based essay aims to describe how behavioristic, cognitive and conceptual learning perspectives can be recognized during the trainee surgeons progress. It also describes how teacher-pupil relationships may vary during the training process. Finally it presents the concept of situational tutorship, where the teacher adapts to the stages that the trainee passes through with increasing experience. Teaching and trainee surgeons who are aware of pedagogical concepts such as teacher-pupil relationships and tutoring strategies may use this knowledge to optimize the learning process. Further research is needed to clarify how using this knowledge may affect the training of new cataract surgeons.

Reviewing the Learning Process through Creative Puzzle Solving  [PDF]
Bj?rn Petter Jelle
Creative Education (CE) , 2017, DOI: 10.4236/ce.2017.813137
Abstract: Human beings are at a continuous learning process at various levels and with different motivations during their whole lifetime. Puzzle solving may beneficially be applied to increase the motivation, enhance the mastering apprehension, promote the creative processes, expand the ability to engage and solve miscellaneous challenges from various viewpoints, and hence lead to an improved learning process and problem solving capability. That is, the application of puzzles may lead to better learning and increased knowledge in general, stimulating the reasoning process and the apprehension of the need for both creativity and hard work. Thus, teachers of both students and teachers may find it beneficial to utilize the art of puzzle solving. Typically, the puzzles are very suitable for and mostly used in mathematics and natural science classes. Nevertheless, the puzzles are in general also applicable for any type of class. The aim of this study is to examine and discuss the learning process through applying creative puzzle solving as a teaching tool. These aspects are illustrated through a review of several selected puzzle examples.
Modeling Ocean Chlorophyll Distributions by Penalizing the Blending Technique  [PDF]
Mathias A. Onabid, Simon Wood
Open Journal of Marine Science (OJMS) , 2014, DOI: 10.4236/ojms.2014.41004
Abstract:

Disparities between the in situ and satellite values at the positions where in situ values are obtained have been the main handicap to the smooth modeling of the distribution of ocean chlorophyll. The blending technique and the thin plate regression spline have so far been the main methods used in an attempt to calibrate ocean chlorophyll at positions where the in situ field could not provide value. In this paper, a combination of the two techniques has been used in order to provide improved and reliable estimates from the satellite field. The thin plate regression spline is applied to the blending technique by imposing a penalty on the differences between the satellite and in situ fields at positions where they both have observations. The objective of maximizing the use of the satellite field for prediction was outstanding in a validation study where the penalized blending method showed a remarkable improvement in its estimation potentials. It is hoped that most analysis on primary productivity and management in the ocean environment will be greatly affected by this result, since chlorophyll is one of the most important components in the formation of the ocean life cycle.

Formation of Mercury(II)-Glutathione Conjugates Examined Using High Mass Accuracy Mass Spectrometry  [PDF]
Zachary Fine, Troy D. Wood
International Journal of Analytical Mass Spectrometry and Chromatography (IJAMSC) , 2013, DOI: 10.4236/ijamsc.2013.12011
Abstract:

Maternal exposure to Hg(II) during pregnancy has been identified as a potential causal factor in the development of severe neurobehavioral disorders. Children with autism have been identified with lower reduced glutathione (GSH)/oxidized glutathione (GSSG) ratios, and GSH is known to strongly bind Hg(II). In order to gain insight into the mechanism by which GSH binds Hg(II), high resolution mass spectrometry coupled with tandem mass spectrometry was utilized to examine the conjugation process. While the 1:1 Hg(II):GSH conjugate is not formed immediately upon mixing aqueous solutions of Hg(II) and GSH, two species containing Hg(II) are observed:the 1:2 Hg(II):GSH conjugate, [(GS)2 Hg + H+], and a second Hg(II)-containing species around m/z 544. Interestingly, this species at m/z 544 decreases in time while the presence of the 1:1 Hg(II):GSH conjugate increases, suggesting that m/z 544 is an intermediate in the formation of the 1:1 conjugate. Experiments using the high mass accuracy capability of Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry coupled to an electrospray ionization source indicate that the intermediate species is [GSH + HgCl]+, andnotthe 1:1 conjugate [Hg(GSH) – H + 2H2O]+postulated in previous literature. Further confirmation of [GSH + HgCl]+ is supported by collisionofinduced dissociation experiments, which show neutral loss of HCl from the intermediate and loss of the N- and C-terminal amino acids, indicating binding of Hg(II) at the Cys residue.

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