87 research outputs found
The Nonlinear Schroedinger Equation with a random potential: Results and Puzzles
The Nonlinear Schroedinger Equation (NLSE) with a random potential is
motivated by experiments in optics and in atom optics and is a paradigm for the
competition between the randomness and nonlinearity. The analysis of the NLSE
with a random (Anderson like) potential has been done at various levels of
control: numerical, analytical and rigorous. Yet, this model equation presents
us with a highly inconclusive and often contradictory picture. We will describe
the main recent results obtained in this field and propose a list of specific
problems to focus on, that we hope will enable to resolve these outstanding
questions.Comment: 21 pages, 4 figure
Forefoot plantar multilobular noninfiltrating angiolipoma: a case report and review of the literature
<p>Abstract</p> <p>Background</p> <p>Soft tissue tumors of the feet are uncommon and there have been very few reports of large series in the literature. These tumors continue to present the clinician with one of the most difficult problems in medicine.</p> <p>Case presentation</p> <p>We present a case of a large multilobular noninfiltrating angiolipoma at the plantar surface of the forefoot. Only three cases occurring at the foot have been previously described. We report this new case due to unusual location of the tumor, the long duration (25 years) of its existence and the unique surgical approach for the tumor excision.</p> <p>Conclusion</p> <p>Surgical excision is the treatment of choice and adjuvant radiotherapy is indicated in select cases.</p
COVID-19. Pandemic surgery guidance
Abstract – Based on high quality surgery and scientific data, scientists and surgeons are committed to protecting patients as well as healthcare staff and hereby provide this Guidance to address the special issues circumstances related to the exponential spread of the Coronavirus disease 2019 (COVID-19) during this
pandemic. As a basis, the authors used the British Intercollegiate General Surgery Guidance as well as recommendations from the USA, Asia, and Italy. The aim is to take responsibility and to provide guidance for surgery
during the COVID-19 crisis in a simplified way addressing the practice of surgery, healthcare staff and patient
safety and care. It is the responsibility of scientists and the surgical team to specify what is needed for the protection of patients and the affiliated healthcare team. During crises, such as the COVID-19 pandemic, the
responsibility and duty to provide the necessary resources such as filters, Personal Protective Equipment
(PPE) consisting of gloves, fluid resistant (Type IIR) surgical face masks (FRSM), filtering face pieces, class
3 (FFP3 masks), face shields and gowns (plastic ponchos), is typically left up to the hospital administration
and government. Various scientists and clinicians from disparate specialties provided a Pandemic Surgery
Guidance for surgical procedures by distinct surgical disciplines such as numerous cancer surgery disciplines,
cardiothoracic surgery, ENT, eye, dermatology, emergency, endocrine surgery, general surgery, gynecology,
neurosurgery, orthopedics, pediatric surgery, reconstructive and plastic surgery, surgical critical care, transplantation surgery, trauma surgery and urology, performing different surgeries, as well as laparoscopy, thoracoscopy and endoscopy. Any suggestions and corrections from colleagues will be very welcome as we are all
involved and locked in a rapidly evolving process on increasing COVID-19 knowledg
Pre-hospital management of mass casualty civilian shootings: a systematic literature review
Estimation of the error of approximation methods for calculating flows of a viscous incompressible fluid with a free boundary
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