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https://www.readbyqxmd.com/read/28749349/extensive-benchmark-and-survey-of-modeling-methods-for-scene-background-initialization
#1
Pierre-Marc Jodoin, Lucia Maddalena, Alfredo Petrosino, Yi Wang
Scene background initialization is the process by which a method tries to recover the background image of a video without foreground objects in it. Having a clear understanding about which approach is more robust and/or more suited to a given scenario is of great interest to many end users or practitioners. The aim of this paper is to provide an extensive survey of scene background initialization methods as well as a novel benchmarking framework. The proposed framework involves several evaluation metrics and state-of-the-art methods, as well as the largest video dataset ever made for this purpose...
July 26, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28749347/approximate-message-passing-reconstruction-of-quantitative-acoustic-microscopy-images
#2
J-H Kim, J Mamou, P R Hill, N Canagarajah, D Kouame, A Basarab, A Achim
A novel framework for compressive sensing (CS) data acquisition and reconstruction in quantitative acoustic microscopy (QAM) is presented. Three different compressive sensing patterns, adapted to the specifics of QAM systems, were investigated as an alternative to the current raster-scanning approach. They consist of diagonal sampling, a row random and a spiral scanning pattern and they can all significantly reduce both the acquisition time and the amount of sampled data. For subsequent image reconstruction, we design and implement an innovative technique, whereby a recently proposed approximate message passing (AMP) method is adapted to account for the underlying data statistics...
July 24, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28749294/osteosarcoma-in-african-hedgehogs-atelerix-albiventris-five-cases
#3
Alonso Reyes-Matute, Adriana Méndez-Bernal, Liliana-Aurora Ramos-Garduño
Osteosarcomas are unusual neoplasms in African hedgehogs ( Atelerix albiventris ) and have been reported in extraskeletal and skeletal locations, including mandible, ribs, and vertebra. Five hedgehogs with osteosarcoma submitted to the Pathology Department at Facultad de Medicina Veterinaria y Zootecnia, National Autonomous University of Mexico are reported. In two cases, the neoplasm arose from the skull; one case arose from the ribs with associated compression of the thoracic and abdominal cavity, and another case involved the vertebrae...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749280/attempted-surgical-correction-of-a-persistent-right-fourth-aortic-arch-in-a-juvenile-rothschild-s-giraffe-giraffa-camelopardalis-rothschildi
#4
Lynnette Waugh, Jennifer D'Agostino, Gretchen A Cole, Alicia Hahn, Mark Rochat, Mee Ja M Sula
A 5-mo-old female Rothschild's giraffe ( Giraffa camelopardalis rothschildi) presented for regurgitation. Esophagoscopy at 24 wk of age revealed a markedly dilated cranial esophagus with a tight stricture at the level of the heart base consistent with a vascular ring anomaly. Surgical exploration confirmed persistent right fourth aortic arch with ductus originating from left subclavian artery at its junction with the aorta and left subclavian artery. The patent ductus arteriosus was surgically ligated. The procedure was complicated by limited surgical access and vascular friability resulting in uncontrollable hemorrhage, and the animal was euthanatized...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749258/coelomic-teratoma-in-a-blue-and-yellow-macaw-ara-ararauna
#5
Letícia B de Oliveira, Willian H M Santos, Alessandra V de Araújo, Anelise C Nepomuceno, Roselene Ecco
A 2-mo-old, female blue-and-yellow macaw (Ara ararauna) presented with severe abdominal distension, pain, and respiratory distress. Ultrasonographic examination detected a heterogeneous mass with multiple anechoic areas, compatible with a multilocular cyst, occupying most of the coelomic cavity. Postmortem examination revealed a mass of 12.0 × 8.5 × 5.0 cm, which had an irregular surface and was connected by a pedicle to the ileum. This mass compressed and displaced the liver, proventriculus, gizzard, and intestines cranially to the left...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28748980/investigation-on-the-function-of-nonionic-surfactants-during-compressed-co2-mediated-periodic-mesoporous-organosilica-formation
#6
Cheng Wang, Mengnan Zhang, Wei Li, Xin Huang, Shuang Li, Sen Luan, Xiaojian Hou, Qian Wang
A systematic study on the structural properties and component information of periodic mesoporous organosilicas synthesized by using different nonionic surfactants as templates with compressed CO2 was carried out. Triblock copolymers (F127, F108, and P123), oligomeric alkyl poly(ethylene oxide) (Brij-58 and Brij-76), and alkyl-phenol poly(ethylene oxide) (TX-100) have been employed as templates and BTEB as a bridged organosilica precursor to synthesize PMO materials at 5.90 MPa. The structure and morphology of the obtained materials were investigated by means of transmission electron microscopy (TEM), nitrogen sorption isotherms, solid Si and C NMR, and FTIR...
July 27, 2017: Soft Matter
https://www.readbyqxmd.com/read/28748703/time-resolved-vibrational-spectroscopy-of-polytetrafluoroethylene-under-laser-shock-compression
#7
Vinay Rastogi, Usha Rao, Shivanand Chaurasia, C D Sijoy, Vinayak Mishra, Shashank Chaturvedi, M N Deo
No abstract text is available yet for this article.
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28748696/ultrasound-characterization-of-microbead-and-cell-suspensions-by-speed-of-sound-measurements-of-neutrally-buoyant-samples
#8
Kevin Wallace Cushing, Fabio Garofalo, Cecilia Magnusson, Lars Ekblad, Henrik Bruus, Thomas Laurell
We present an experimental method including error analysis for the measurement of the density and compressibility of cells and microbeads; these being the two central material properties in ultrasound-based acoustophoretic applications such as particle separation, trapping, and up-concentration. The density of the microparticles is determined by using a neutrally-buoyant selection process that involves centrifuging of microparticles suspended in different density solutions, CsCl for microbeads and Percoll for cells...
July 27, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28748486/nonlinear-processing-of-a-multicomponent-communication-signal-by-combination-sensitive-neurons-in-the-anuran-inferior-colliculus
#9
Norman Lee, Katrina M Schrode, Mark A Bee
Diverse animals communicate using multicomponent signals. How a receiver's central nervous system integrates multiple signal components remains largely unknown. We investigated how female green treefrogs (Hyla cinerea) integrate the multiple spectral components present in male advertisement calls. Typical calls have a bimodal spectrum consisting of formant-like low-frequency (~0.9 kHz) and high-frequency (~2.7 kHz) components that are transduced by different sensory organs in the inner ear. In behavioral experiments, only bimodal calls reliably elicited phonotaxis in no-choice tests, and they were selectively chosen over unimodal calls in two-alternative choice tests...
July 26, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28748455/resection-of-rectal-cancer-resembling-submucosal-tumor-that-was-preoperatively-diagnosed-with-endoscopic-ultrasound-guided-biopsy
#10
Akimitsu Tanio, Hiroaki Saito, Keigo Ashida, Shouichi Urushibara, Manabu Yamamoto, Naruo Tokuyasu, Teruhisa Sakamoto, Soichiro Honjo, Yoshihiko Maeta, Yoshiyuki Fujiwara
BACKGROUND: Colorectal cancer (CRC) resembling submucosal tumor (SMT; CRC/SMT) is very rare. Because its biopsy is challenging, accurate preoperative diagnosis is also very rare. CASE PRESENTATION: A 55-year-old woman with a high serum carcinoembryonic antigen level underwent a computed tomography colonoscopy, which showed extrinsic rectum compression. A coronal magnetic resonance image showed a 4-cm low-intensity tumor between her rectum and sacrum. Endoscopic ultrasound (EUS) showed a 30-mm low-echoic lesion originating from the rectum...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28748388/pls3-sequencing-in-childhood-onset-primary-osteoporosis-identifies-two-novel-disease-causing-variants
#11
A J Kämpe, A Costantini, R E Mäkitie, N Jäntti, H Valta, M Mäyränpää, H Kröger, M Pekkinen, F Taylan, H Jiao, O Mäkitie
Altogether 95 children with primary bone fragility were screened for variants in PLS3, the gene underlying X-linked osteoporosis. Two children with multiple peripheral and spinal fractures and low BMD had novel disease-causing PLS3 variants. Children with milder phenotypes had no pathogenic variants. PLS3 screening is indicated in childhood-onset primary osteoporosis. INTRODUCTION: The study aimed to determine the role of pathogenic PLS3 variants in children's bone fragility and to elucidate the associated phenotypic features...
July 26, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28748271/the-emerging-role-of-gamma-knife-radiosurgery-in-the-management-of-glossopharyngeal-neuralgia
#12
REVIEW
Alfio Spina, Nicola Boari, Filippo Gagliardi, Michele Bailo, Carlotta Morselli, Sandro Iannaccone, Pietro Mortini
Glossopharyngeal neuralgia (GPN) represents a rare craniofacial disorder accounting for about 1% of all craniofacial pain syndromes. GPN shares several pathophysiologic and clinical features with the more common trigeminal neuralgia. Medical therapy and microvascular decompression, in case of vascular nerve compression, represented the mainstay of GPN management. Other ablative therapies have been reported to date; however, few data are available because of the rarity of this pain syndrome. Among the ablative procedures, gamma knife radiosurgery (GKRS) has been recently introduced in the management of GPN with good pain control and low complication rates...
July 26, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28748022/-primary-congenital-lymphedema-milroy-disease-the-first-case-observed-in-the-department-of-pediatrics-at-the-university-hospital-yalgado-ouedraogo-ouagadougou
#13
Chantal Zoungrana Ouattara, Angèle Kalmogho, Caroline Yonaba, Chantal Gabrielle Bouda, Ghislaine Yaméogo, Ludovic Kam
Congenital lymphedema is the accumulation of lymphatic fluid in the child's interstitial spaces. Milroy disease is a rare, hereditary, autosomal dominant condition showing incomplete penetrance. We report the case of a 7-year old little girl with Milroy disease examined for erysipelas on congenital big right leg. A family history of large congenital member existed. Physical examination showed big oedematous right leg painful to palpation, with skin lichenification and erysipelas. Paraclinical assessment objectified cutaneous lymphedema with vascular involvement suggestive of ectasia of the right saphenous vein...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28747669/compressive-sampling-based-on-frequency-saliency-for-remote-sensing-imaging
#14
Jin Li, Zilong Liu, Fengdeng Liu
In saliency-based compressive sampling (CS) for remote sensing image signals, the saliency information of images is used to allocate more sensing resources to salient regions than to non-salient regions. However, the pulsed cosine transform method can generate large errors in the calculation of saliency information because it uses only the signs of the coefficients of the discrete cosine transform for low-resolution images. In addition, the reconstructed images can exhibit blocking effects because blocks are used as the processing units in CS...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747594/mechanical-and-biological-effects-of-infiltration-with-biopolymers-on-3d-printed-tricalciumphosphate-scaffolds
#15
Matthias Cornelsen, Florian Andreas Probst, Christina Schwarz, Egon Burian, Matthias Tröltzsch, Sven Otto, Maximilian Michael Saller, Matthias Schieker, Hermann Seitz
The aim of this study was to evaluate the influence of infiltrating 3D printed (TCP) scaffolds with different biodegradable polymers on their mechanical and biological properties. 3D printed TCP scaffolds with interconnecting channels measuring 450±50 µm were infiltrated with four different biodegradable copolymers. To determine the average compressive strength, a uniaxial testing system was used. Additionally, scaffolds were seeded with MC3T3 cells and cell viability was assessed by live/dead-assay. Uninfiltrated TCP had an average compression strength of 1...
July 26, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28747317/the-risk-of-postoperative-hemorrhage-and-efficacy-of-heparin-for-preventing-deep-vein-thrombosis-and-pulmonary-embolism-in-adult-patients-undergoing-neurosurgery-a-systematic-review-and-meta-analysis
#16
Xuan Wang, Ying-Chun Zhou, Wen-De Zhu, Yun Sun, Peng Fu, De-Qiang Lei, Hong-Yang Zhao
The aim of this meta-analysis was to examine the risk of postoperative bleeding and efficacy of heparin for preventing deep vein thrombosis (DVT) and pulmonary embolism (PE) in adult patients undergoing neurosurgery. MEDLINE, Cochrane, and EMBASE databases were searched until October 31, 2016, for randomized controlled trials (RCTs) and non-randomized comparative studies that assessed the rates of postoperative hemorrhage, DVT, PE, and mortality in adult patients undergoing neurosurgery. Nine eligible studies (five RCTs, four retrospective studies) including 874 patients treated with either unfractionated heparin (UFH) or low-molecular-weight heparin (LMWH) and 1033 patients in control group (placebo with or without compression device) were analyzed...
July 26, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28747258/confidence-and-clinical-judgement-in-community-nurses-managing-venous-leg-ulceration-a-judgement-analysis
#17
Una J Adderley, Carl Thompson
BACKGROUND: The variation in the management of venous leg ulceration in the UK is partly attributable to an uncertain clinical environment but the quality of judgements is influenced by the how well nurses' confidence and accuracy are aligned. OBJECTIVES: To assess UK community nurses' confidence in the accuracy of their diagnostic judgements and treatment choices when managing venous leg ulceration. DESIGN: Judgement Analysis. SETTING: UK community and primary care nursing services...
July 19, 2017: Journal of Tissue Viability
https://www.readbyqxmd.com/read/28747182/recurrent-primary-mediastinal-giant-cell-tumor-of-soft-tissue-with-radiological-findings-a-rare-case-report-and-literature-review
#18
Qiongjie Hu, Jian Peng, Liming Xia
BACKGROUND: Giant cell tumor of soft tissue (GCT-ST), which histologically resembles GCT of bone, is a rare tumor. Usually, it is located in the lower extremities and trunk. GCT-ST, occurring in mediastinum, is extremely rare. CASE PRESENTATION: We encountered an 18-year-old Chinese woman who had mild dull pain on the left side of back. The following chest computed tomography (CT) showed a heterogeneous mass deeply situated in the posterior mediastinum with compression of the lung and invasion of the adjacent rib...
July 26, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28747004/the-stability-and-removal-of-water-dispersed-cdse-cds-core-shell-quantum-dots-from-water
#19
Xu Chen, Yong Sik Ok, Dinesh Mohan, Charles U Pittman, Xiaomin Dou
The increasingly wide use of semiconductor nanocrystals inevitably leads to their release into aquatic environment. The aggregation behaviors of 3-mercaptopropionic acid-capped CdSe/CdS core-shell quantum dots (MPA-QDs) under various water chemistry conditions were examined and their removal using Fe(3+) and Al(3+) coagulants was evaluated. Cationic species rather than concentrations affected the stability of MPA-QDs. Adding 2 mM Ca(2+) led to a much larger ζ-potential decrease and particle size increase than adding 150 mM K(+) at each tested solution pH...
July 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28746935/maintaining-distinctiveness-at-increased-speaking-rates-a-comparison-between-congenitally-blind-and-sighted-speakers
#20
Lucie Ménard, Dominique Côté, Pamela Trudeau-Fisette
OBJECTIVES: The effects of increased speaking rates on vowels have been well documented in sighted adults. It has been reported that in fast speech, vowels are less widely spaced acoustically than in their citation form. Vowel space compression has also been reported in congenitally blind speakers. The objective of the study was to investigate the interaction of vision and speaking rate in adult speakers. PATIENTS AND METHODS: Contrast distances between vowels were examined in conversational and fast speech produced by 10 congenitally blind and 10 sighted French-Canadian adults...
July 27, 2017: Folia Phoniatrica et Logopaedica
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