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Search Results: 1 - 10 of 90921 matches for " Michael St John Floyd Jr "
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Bilateral Giant Renal Cysts Masquerading as Malignant Ascites
Michael St John Floyd Jr
Urology Journal , 2012,
Abstract: No Abstarct
Incidental Detection of a Unilateral Dilated Blind-Ending Ureter, Renal Agenesis, and a Dilated Seminal Vesicle
Michael St John Floyd Jr,John Scally,Paul Patrick Irwin
Urology Journal , 2012,
Abstract: No Abstract
Bladder Amyloidosis Mimicking Carcinoma
Ashok Kumar Singh,Michael St J Floyd (Jr),Alan Robert De Bolla
Urology Journal , 2011,
Abstract:
Beware of the Dog: Traumatic Extrusion of an Artificial Urinary Sphincter Following Blunt Trauma to the Scrotum by a Domestic Animal  [PDF]
Michael S. Floyd jr., Karen Chan, Andrew D. Baird
Open Journal of Urology (OJU) , 2011, DOI: 10.4236/oju.2011.14020
Abstract: Artificial urinary sphincters are commonly used in males with intrinsic sphincter deficiency to improve continence and quality of life. Complications include erosion, mechanical failure and infection. Frequently, a staged approach involving removal of the device, followed by a period of healing and subsequent reinsertion of a new sphincter is required to restore continence. We describe the first case ever reported of traumatic sphincter extrusion following blunt scrotal trauma by a dog and review its clinical features and management.
Unilateral spontaneous rupture of a testicular implant thirteen years after bilateral insertion: a case report
Michael St J Floyd, Helen Williams, Sanjay K Agarwal, Alan R De Bolla
Journal of Medical Case Reports , 2010, DOI: 10.1186/1752-1947-4-341
Abstract: A 50 year old Caucasian man presented to our outpatient department with an altered consistency in his right testicular prosthesis without any systemic symptoms or local inflammation. His left testicular prosthesis had retained its consistency since insertion.The majority of cases reported to date have required exploration due to symptoms but we describe a case that was managed conservatively.Prosthesis insertion is commonplace following radical orchidectomy as it provides patients with a cosmetically normal scrotum. The first case of a prosthetic testis was described in 1941 by Girdansky and Newman using a Vitallium implant [1]. Puranik in 1973 [2] in the paediatric population and Lattimer in 1973 [3] in adults are credited with introducing a silicone gel filled implant that resembled a naturally feeling testis. Implants consist of an outer silicone elastomer which envelops a transparent gel. Complications with breast implants have been well documented and include pain, deformity and autoimmune phenomenon. Following concerns over silicone breast implants the American Urological Association in 1992 advised against the use of silicone gel testicular implants and advocated the use of silicone elastomer prostheses instead [4].Specific to urological use implants can extrude by shedding of the outer elastomer shell or via direct leakage of the gel. Other complications include scrotal contraction, migration into the inguinal canal, infection, pain, and rarely haematoma [5]. Immune complications such as human adjuvant disease have also been documented [6]. However, unlike breast implants testicular prostheses enjoy an environment that allows greater mobility, less friction, decreased vascularity and a more favourable temperature.A 50 year old man presented to our outpatient department with a three month history of an altered consistency in his right testicular prosthesis. There was no history of trauma, pain or systemic upset. Scrotal examination revealed a palpable left te
Exploring Factors Influencing Species Natural Regeneration Response Following Harvesting in the Acadian Forests of New Brunswick  [PDF]
Lee Salmon, John A. Kershaw Jr., Anthony R. Taylor, Marek Krasowski, Michael B. Lavigne
Open Journal of Forestry (OJF) , 2016, DOI: 10.4236/ojf.2016.63017
Abstract: In the Acadian Forest Region of northeastern North America, forest managers are under increasing public pressure to restore the forest to a more historic, natural condition by reducing in clearcutting and promoting partial-cut treatments that more closely emulate historic, local natural disturbance regimes. However, although numerous studies on the effects of partial-cutting on forest regeneration response have been conducted in surrounding temperate and boreal forest ecosystems, there are few studies that directly explore responses to various forms of harvesting within the Acadian Forest ecosystem, with its unique mixture of northern hardwoods and boreal forest species. Here, we conducted one of the first retrospective studies on forest regeneration following a variety of harvesting methods in the Acadian Forest using univariate and multivariate regression trees to assess regeneration response in 50 naturally-regenerating, harvested forest sites in New Brunswick, Canada. Our study shows that regeneration was highly influenced by harvest type, overstory composition, and environmental conditions as reflected by ecoregion classification. Canopy opening size (as controlled by harvest method) significantly influenced the dominance of regenerating species. The presence of conspecific overstory trees increased the likelihood of their regeneration following disturbance, supporting the direct-regeneration hypothesis, especially for species with limited seed dispersal (e.g., sugar maple (Acer saccharum Marsh.) and American beech (Fagus grandifolia Ehrh.). Despite reported problems elsewhere in eastern North America, neither American beech nor balsam fir (Abies balsamea (L.) Mill.) constituted significant competition for the desired species on a broad scale, but the presence of beech was a significant deterrent for yellow birch (Betula alleghaniensis Britt.).
Activation of lateral hypothalamus-projecting parabrachial neurons by intraorally delivered gustatory stimuli
Kenichi Tokita,William E. Armstrong,Steven J. St. John,John D. Boughter Jr.
Frontiers in Neural Circuits , 2014, DOI: 10.3389/fncir.2014.00086
Abstract: The present study investigated a subpopulation of neurons in the mouse parabrachial nucleus (PbN), a gustatory and visceral relay area in the brainstem, that project to the lateral hypothalamus (LH). We made injections of the retrograde tracer Fluorogold (FG) into LH, resulting in fluorescent labeling of neurons located in different regions of the PbN. Mice were stimulated through an intraoral cannula with one of seven different taste stimuli, and PbN sections were processed for immunohistochemical detection of the immediate early gene c-Fos, which labels activated neurons. LH projection neurons were found in all PbN subnuclei, but in greater concentration in lateral subnuclei, including the dorsal lateral subnucleus (dl). Fos-like immunoreactivity (FLI) was observed in the PbN in a stimulus-dependent pattern, with the greatest differentiation between intraoral stimulation with sweet (0.5 M sucrose) and bitter (0.003 M quinine) compounds. In particular, sweet and umami-tasting stimuli evoked robust FLI in cells in the dl, whereas quinine evoked almost no FLI in cells in this subnucleus. Double-labeled cells were also found in the greatest quantity in the dl. Overall, these results support the hypothesis that the dl contains direct a projection to the LH that is activated preferentially by appetitive compounds; this projection may be mediated by taste and/or postingestive mechanisms.
Dark Particles Answer Dark Energy  [PDF]
John L. Haller Jr.
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.47A1010
Abstract:

This paper argues that a hypothetical “dark” particle (a black hole with the reduced Planck mass and arbitrary temperature) gives a simple explanation to the open question of dark energy and has a relic density of only 17% more than the commonly accepted value. By considering an additional near-horizon boundary of the black hole, set by its quantum length, the black hole can obtain an arbitrary temperature. Black-body radiation is still present and fits as the source of the Universe’s missing energy. Support for this hypothesis is offered by showing that a stationary solution to the black hole’s length scale is the same if derived from a quantum analysis in continuous time, a quantum analysis in discrete time, or a general relativistic analysis.

Entropy Rate of Thermal Diffusion  [PDF]
John L. Haller Jr.
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.410167
Abstract:

The thermal diffusion of a free particle is a random process and generates entropy at a rate equal to twice the particle’s temperature, \"\" (in natural units of information per second). The rate is calculated using a Gaussian process with a variance of \"\" which is a combination of quantum and classical diffusion. The solution to the quantum diffusion of a free particle is derived from the equation for kinetic energy and its associated imaginary diffusion constant; a real diffusion constant (representing classical diffusion) is shown to be \"\" . We find the entropy of the initial state is one natural unit, which is the same amount of entropy the process generates after the de-coherence time, \"\".

Measuring a Quantum System’s Classical Information  [PDF]
John L. Haller Jr.
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.51002
Abstract:

In the governing thought, I find an equivalence between the classical information in a quantum system and the integral of that system’s energy and time, specifically \"\", in natural units. I solve this relationship in four ways: the first approach starts with the Schrodinger Equation and applies the Minkowski transformation; the second uses the Canonical commutation relation; the third through Gabor’s analysis of the time-frequency plane and Heisenberg’s uncertainty principle; and lastly by quantizing Brownian motion within the Bernoulli process and applying the Gaussian channel capacity. In support I give two examples of quantum systems that follow the governing thought: namely the Gaussian wave packet and the electron spin. I conclude with comments on the discretization of space and the information content of a degree of freedom.

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