Results 51 to 60 of about 183,461 (142)
Journal of Microscopy, EarlyView.Abstract X‐ray phase contrast imaging (XPCI), when implemented in micro‐computed tomography (micro‐CT) mode, offers high‐contrast 3D imaging of weakly‐attenuating material samples. In the so‐called single‐mask edge illumination approach, a mask with periodically spaced transmitting apertures is used to split the x‐ray beam into narrow beamlets; when ...
Khushal Shah +8 more
wiley +1 more source
Finite aperture Fraunhofer holograms of two co-planar discs [PDF]
, 1993 In this paper we present a theoretical model describing the real images replayed from finite aperture Fraunhofer holograms of two identical co-planar objects.
Raouf, A, Hobson, PR
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Morphological study of the supratrochlear foramen in Canis lupus ssp.
Journal of Anatomy, EarlyView.The supratrochlear foramen (STF) is a common anatomical feature in the humeri of dogs and wolves. This study shows that the STF exhibits a consistent shape and position in dogs and wolves, suggesting a common morphological pattern; however, it was less frequent in smaller dog humeri, and its size correlated with humeral dimensions, suggesting that ...
Mariana Batista +9 more
wiley +1 more source
Double orifice mitral valve associated with Ventricular Septal Defect in an infant : case report [PDF]
, 2011 Double orifice mitral valve (DOMV) is an uncommon anomaly characterized by a mitral valve with a single fibrous annulus with two orifices opening into the left ventricle.
Taksande, Amar M. +2 more
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Journal of Anatomy, EarlyView.New World vultures are the only avian clade proposed to lack a syrinx and have been described as non‐vocal. Using dissection, diceCT, and histology, we demonstrate that cathartid vultures have novel syringeal features that form a syrinx and vocal characterization reveals that they produce more complex vocalizations than previously reported.
Bradley A. Ibarra +3 more
wiley +1 more source
Delayed Amplatzer device closure of atrial septal defect for persistent cyanosis after surgical correction of severe pulmonary stenosis in early infancy [PDF]
, 2004 This article presents two patients who had delayed transcatheter closure of secundum atrial septal defects for persistent cyanosis after surgical repair of severe pulmonary stenosis.
DeGiovanni, Joseph V. +2 more
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Journal of Systematics and Evolution, EarlyView.Our ancestral state reconstruction in tree crickets reveals multiple independent and irreversible losses of sound‐producing and ‐receiving structures, supporting the convergent evolution of the silent phenotype. We demonstrate strong evolutionary integration between forewings and tympana, although the discovery of ‘silent listeners′ and ‘deaf singers ...
Lucas Denadai de Campos +3 more
wiley +1 more source
Aperture-Averaging - Theory and Measurements [PDF]
, 2004 Atmospheric laser communications using direct-detection systems do suffer from severe degradation caused by scintillation. Because the atmospheric cut-off frequency can be as low as 100 Hz, temporal averaging is not applicable in high-speed ...
Perlot, Nicolas, Fritzsche, Daniel
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Multidimensional Waveform Encoding for Synthetic Aperture Radar Remote Sensing [PDF]
, 2007 This paper introduces and analyses the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Moreira, Alberto +5 more
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Orthodontics &Craniofacial Research, EarlyView.ABSTRACT Objective This study evaluated, in three dimensions, the skeletal effects of two minimally invasive bone‐anchored techniques for surgically assisted palatal expansion, with and without pterygomaxillary disjunction (PD) and nasal septum disinsertion (NSD). Materials and Methods Thirty‐nine patients were retrospectively selected from two centres
Bibiana Mello da Rosa +6 more
wiley +1 more source