Results 61 to 70 of about 949,261 (229)

Transcatheter closure of Ventricular Septal defects in Malta : initial experience [PDF]

open access: yes, 2005
Ventricular septal defects (VSD) consist of deficiencies of the wall separating the two ventricles. VSDs are the commonest congenital cardiac defects. Small VSDs rarely require intervention, however, larger defects cause ventricular volume overload with ...
Aquilina, Oscar   +6 more
core  

Differentiating the Clinical and Variant Spectrum of Hardikar Syndrome From Other MED12‐Related Developmental Disorders

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT The rare X‐linked female‐restricted Hardikar syndrome (HDKR, OMIM # 301068) is characterized by multiple congenital anomalies including orofacial clefts, gastrointestinal, genitourinary, and cardiac anomalies, but cognitive and neurobehavioral development is rarely impaired.
Tinne Warmoeskerken   +4 more
wiley   +1 more source

Traveling wave method for simulating geometric beam coupling impedance of a beamscreen with pumping holes

open access: yes, 2019
In particle accelerators, pumping holes in a vacuum chamber can be a source of unwanted broadband coupling impedance, leading to beam instabilities. Analytical methods have been previously developed to estimate the impedance of holes in circular-like ...
Arsenyev, Sergey   +2 more
core   +1 more source

Livedo Racemosa – The Pathophysiology of Decompression-Associated Cutis Marmorata and Right/Left Shunt

open access: yesFrontiers in Physiology, 2020
Decompression sickness and arterial gas embolism, collectively known as decompression illness (DCI), are serious medical conditions that can result from compressed gas diving. DCI can present with a wide range of physiologic and neurologic symptoms.
F. Hartig   +7 more
semanticscholar   +1 more source

Translating Biomedical Research to Medical Devices: A Practical Guide and the Arteriovenous Graft Case Study

open access: yesAdvanced NanoBiomed Research, EarlyView.
Despite significant advances, most academic research fails to result in medical products that benefit patients. This guide shares five key steps to help researchers close that gap: set clear goals, test thoroughly, protect ideas, build diverse teams, and partner with industry.
Cristina Oldani   +4 more
wiley   +1 more source

Degradation effects in sc-Si PV modules subjected to natural and induced ageing after several years of field operation [PDF]

open access: yes, 2012
This paper presents ageing effects observed in sc-Si PV modules operating in field conditions for 18 and over 22 years. The effects of both natural ageing processes and induced ageing by external agents, causing partial or total shading of cells for a ...
Kaplani, E.
core  

How do clarinet players adjust the resonances of their vocal tracts for different playing effects

open access: yes, 2005
In a simple model, the reed of the clarinet is mechanically loaded by the series combination of the acoustical impedances of the instrument itself and of the player's vocal tract. Here we measure the complex impedance spectrum of players' tracts using an
Fritz, Claudia, Wolfe, Joe
core   +4 more sources

Chaos and Thermal Noise in a Josephson Junction Coupled to a Resonant Tank [PDF]

open access: yes, 1996
Selected dynamical modes are investigated for the autonomous system formed from a dc biased Josephson junction which is resistively coupled to a resonant tank.
Blackburn, James A.   +2 more
core   +2 more sources

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

open access: yesThe Anatomical Record, EarlyView.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt   +5 more
wiley   +1 more source

Nasal soft‐tissue anatomy of Triceratops and other horned dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract Although ceratopsid dinosaurs possess a characteristically hypertrophied narial region, soft‐tissue anatomy associated with such a skeletal structure and their biological significance remain poorly understood. The present study provides the first comprehensive hypothesis on the soft‐tissue anatomy in the ceratopsid rostrum based on the Extant ...
Seishiro Tada   +5 more
wiley   +1 more source

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