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https://www.readbyqxmd.com/read/28934102/pose-estimation-of-a-mobile-robot-based-on-fusion-of-imu-data-and-vision-data-using-an-extended-kalman-filter
#1
Mary B Alatise, Gerhard P Hancke
Using a single sensor to determine the pose estimation of a device cannot give accurate results. This paper presents a fusion of an inertial sensor of six degrees of freedom (6-DoF) which comprises the 3-axis of an accelerometer and the 3-axis of a gyroscope, and a vision to determine a low-cost and accurate position for an autonomous mobile robot. For vision, a monocular vision-based object detection algorithm speeded-up robust feature (SURF) and random sample consensus (RANSAC) algorithms were integrated and used to recognize a sample object in several images taken...
September 21, 2017: Sensors
https://www.readbyqxmd.com/read/28933724/an-automatic-multi-target-independent-analysis-framework-for-non-planar-infrared-visible-registration
#2
Xinglong Sun, Tingfa Xu, Jizhou Zhang, Zishu Zhao, Yuankun Li
In this paper, we propose a novel automatic multi-target registration framework for non-planar infrared-visible videos. Previous approaches usually analyzed multiple targets together and then estimated a global homography for the whole scene, however, these cannot achieve precise multi-target registration when the scenes are non-planar. Our framework is devoted to solving the problem using feature matching and multi-target tracking. The key idea is to analyze and register each target independently. We present a fast and robust feature matching strategy, where only the features on the corresponding foreground pairs are matched...
July 26, 2017: Sensors
https://www.readbyqxmd.com/read/28933332/the-impact-of-caregivers-anxiety-on-patients-anxiety-before-fast-track-knee-arthroplasty
#3
P Zietek, B Zarzycka, J Zietek, M Stepien-Slodkowska, E Sienko-Awierianow, D Kotrych, K Dobiecki
PURPOSE OF THE STUDY Anxiety may have negative repercussions on the surgery including poorer outcomes. On the other hand, the majority of patients reporting preoperative anxiety fear not receiving enough attention from a caregiver. In patients undergoing fast-track knee arthroplasty, we determined the relationship between patients' preoperative anxiety and the anxiety the patient's caregiver. We also analyzed the influence of selected psychosocial and demographic variables on the relationship between caregivers' and patients' anxiety...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28925812/watch-where-you-re-going-interferer-velocity-and-visual-behavior-predicts-avoidance-strategy-during-pedestrian-encounters
#4
James L Croft, Derek Panchuk
Pedestrians can avoid collisions with other pedestrians by modifying some combination of their velocity and their path. The authors investigated how path constraints (constrained or unconstrained), interferer velocity (slow or fast), and vision (looking or not looking; time spent looking at the interferer) influenced collision avoidance to an oblivious interferer walking on a perpendicular path. Ten participants walked 6 m to either a point or line target on either a constrained or unconstrained path while wearing an eye-tracking device and avoiding an oblivious interferer that walked at 2 speeds...
September 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28921742/processing-of-temporally-patterned-sounds-in-the-auditory-cortex-of-seba-s-short-tailed-bat-carollia-perspicillata
#5
Lisa M Martin, Francisco García-Rosales, M Jerome Beetz, Julio C Hechavarría
This article presents a characterization of cortical responses to artificial and natural temporally-patterned sounds in the bat species Carollia perspicillata, a species that produces vocalizations at rates above 50 Hz. Multi-unit activity was recorded in three different experiments. In the first experiment, amplitude modulated (AM) pure tones were used as stimuli to drive auditory cortex (AC) units. AC units of both ketamine-anesthetized and awake bats could lock their spikes to every cycle of the stimulus modulation envelope, but only if the modulation frequency was below 22 Hz...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28918788/-fast-track-total-knee-arthroplasty
#6
Kirill Gromov, Billy B Kristensen, Christoffer Calov Jørgensen, Torben Bæk Hansen, Henrik Kehlet, Henrik Husted
Fast-track total knee arthroplasty (TKA) is a well-established concept including optimized logistics and evidence-based treatment, focusing on minimizing surgical stress and improved post-operative recovery, thus leading to lower mortality and morbidity as well as high patient satisfaction. All patients are eligible for fast-track TKA, and hence the fast-track concept should be standard at all joint replacement facilities. Future challenges of fast-track TKA include safe introduction of outpatient protocols, acute and chronic pain after surgery and optimal utilization of post-operative physiotherapy...
September 18, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28914103/the-first-6-weeks-of-recovery-after-primary-total-hip-arthroplasty-with-fast-track
#7
Lisette C M Klapwijk, Nina M C Mathijssen, Jeroen C van Egmond, Bianca M Verbeek, Stephan B W Vehmeijer
No abstract text is available yet for this article.
September 15, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28913346/live-fast-die-fast-principle-in-a-single-cell-of-fission-yeast
#8
COMMENT
Hidenori Nakaoka
Growth and death are both fundamental macroscopic properties for all living matters, and thus cell division and mortality rates are good parameters for characterizing cellular physiology in a given environment. While population growth rates in various conditions have been reported in literature, death rate is rarely measured, especially in favorable culture conditions where cells grow exponentially. In our recent study (Nakaoka and Wakamoto, 2017), we developed a microfluidics-based platform to track multiple single cell lineages until death...
August 13, 2017: Microbial Cell
https://www.readbyqxmd.com/read/28912507/fast-track-development-of-an-in-vitro-3d-lung-immune-cell-model-to-study-aspergillus-infections
#9
P Chandorkar, W Posch, V Zaderer, M Blatzer, M Steger, C G Ammann, U Binder, M Hermann, P Hörtnagl, C Lass-Flörl, D Wilflingseder
To study interactions of airborne pathogens, e.g. Aspergillus (A.) fumigatus with upper and lower respiratory tract epithelial and immune cells, we set up a perfused 3D human bronchial and small airway epithelial cell system. Culturing of normal human bronchial or small airway epithelial (NHBE, SAE) cells under air liquid interphase (ALI) and perfusion resulted in a significantly accelerated development of the lung epithelia associated with higher ciliogenesis, cilia movement, mucus-production and improved barrier function compared to growth under static conditions...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28911656/physicochemical-analysis-and-nonisothermal-kinetic-study-of-sertraline-lactose-binary-mixtures
#10
Faranak Ghaderi, Mahboob Nemati, Mohammad Reza Siahi-Shadbad, Hadi Valizadeh, Farnaz Monajjemzadeh
In the present study the physicochemical stability of sertraline with lactose was evaluated in drug-excipient binary mixtures. Different physicochemical methods such as differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy, and mass spectrometry were applied to confirm the incompatibility. The final aim of this study was to evaluate the kinetic parameters using a fast and sensitive DSC method. Solid-state kinetic parameters were derived from nonisothermally stressed physical mixtures using different thermal models such as Friedman, Flynn-Wall-Ozawa, and Kissinger-Akahira-Sunose...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910668/specific-contributions-of-basal-ganglia-and-cerebellum-to-the-neural-tracking-of-rhythm
#11
Sylvie Nozaradan, Michael Schwartze, Christian Obermeier, Sonja A Kotz
How specific brain networks track rhythmic sensory input over time remains a challenge in neuroimaging work. Here we show that subcortical areas, namely the basal ganglia and the cerebellum, specifically contribute to the neural tracking of rhythm. We tested patients with focal lesions in either of these areas and healthy controls by means of electroencephalography (EEG) while they listened to rhythmic sequences known to induce selective neural tracking at a frequency corresponding to the most-often perceived pulse-like beat...
August 19, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28905861/giant-cell-arteritis-and-polymyalgia-rheumatica-current-challenges-and-opportunities
#12
REVIEW
Christian Dejaco, Elisabeth Brouwer, Justin C Mason, Frank Buttgereit, Eric L Matteson, Bhaskar Dasgupta
The fields of giant cell arteritis (GCA) and polymyalgia rheumatica (PMR) have advanced rapidly, resulting in a new understanding of these diseases. Fast-track strategies and improved awareness programmes that prevent irreversible sight loss through early diagnosis and treatment are a notable advance. Ultrasonography and other imaging techniques have been introduced into routine clinical practice and there have been promising reports on the efficacy of biologic agents, particularly IL-6 antagonists such as tocilizumab, in treating these conditions...
September 14, 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28905058/a-transition-metal-free-fast-track-to-flavones-and-3-arylcoumarins
#13
Mostafa Golshani, Mehdi Khoobi, Nafiseh Jalalimanesh, Farnaz Jafarpour, Alireza Ariafard
A highly regioselective and transition-metal free one-pot arylation of chromenones with arylboronic acids has been achieved employing K2S2O8. The procedure consists of a sequence of some reactions including an arylation/decarboxylation cascade and proceeds well in aqueous media to afford biologically interesting flavones and 3-arylcoumarins. This method exhibited excellent selectivity and functional group tolerance under mild conditions. The reaction also showed perfect efficacy for the preparation of styryl coumarins...
September 14, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28902225/optical-tracking-of-relaxation-dynamics-in-semi-dilute-hydroxypropylcellulose-solutions-as-a-precise-phase-transition-probe
#14
Hernan Garate, King-Wo Li, Denis Bouyer, Patrick Guenoun
Phase separation of thermo-responsive polymers in solution is a complex process, whose understanding is essential to screen and design materials with diverse technological applications. Here we report on a method based on dynamic light scattering (DLS) experiments to investigate the phase separation of thermo-responsive polymer solutions and precisely define the transition temperature (TPS). Our results are applied on hydroxypropylcellulose (HPC) solutions as an important biosourced green water-soluble polymer...
September 13, 2017: Soft Matter
https://www.readbyqxmd.com/read/28902004/antiretroviral-therapy-in-hiv-infected-children-with-tuberculosis-a-systematic-review
#15
Giorgia Sulis, Silvia Amadasi, Anna Odone, Martina Penazzato, Alberto Matteelli
BACKGROUND: Tuberculosis is the major cause of mortality in HIV-infected children globally. Current guidelines about the management of antiretroviral therapy in children with tuberculosis are based on a limited number of non-randomized studies involving small numbers of participants. The aim of the study was to systematically retrieve and critically appraise available evidence on the efficacy and safety of different antiretroviral regimens in children with HIV infection who are receiving treatment for active tuberculosis...
September 7, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28901615/model-based-dose-reconstruction-for-ct-dose-estimation
#16
Mingye Wu, Zhye Yin, Bruno De Man
PURPOSE: Our goal is to develop a model-based approach for CT dose estimation. We previously presented a CT dose estimation method that offered good accuracy in soft tissue regions but lower accuracy in bone regions. In this work, we propose an improved physic-based approach to achieve high accuracy for any materials and realistic clinical anatomies. METHODS: Like Monte Carlo techniques, we start from a model or image of the patient and we model all relevant x-ray interaction processes...
September 2017: Medical Physics
https://www.readbyqxmd.com/read/28900782/why-are-antagonist-muscles-co-activated-in-my-simulation-a-musculoskeletal-model-for-analysing-human-locomotor-tasks
#17
Adrian K M Lai, Allison S Arnold, James M Wakeling
Existing "off-the-shelf" musculoskeletal models are problematic when simulating movements that involve substantial hip and knee flexion, such as the upstroke of pedalling, because they tend to generate excessive passive fibre force. The goal of this study was to develop a refined musculoskeletal model capable of simulating pedalling and fast running, in addition to walking, which predicts the activation patterns of muscles better than existing models. Specifically, we tested whether the anomalous co-activation of antagonist muscles, commonly observed in simulations, could be resolved if the passive forces generated by the underlying model were diminished...
September 12, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28900757/low-incidence-of-postoperative-urinary-retention-with-the-use-of-a-nurse-led-bladder-scan-protocol-after-hip-and-knee-arthroplasty-a-retrospective-cohort-study
#18
N P Kort, Y Bemelmans, R Vos, M G M Schotanus
PURPOSE: Postoperative urinary retention (POUR), defined as the inability to empty the bladder voluntary after surgery, is a commonly reported complication. This study reports the incidence and possible risk factors for POUR after elective fast-track hip or knee arthroplasty when using a nurse-led bladder scan protocol. METHODS: This retrospective cohort study included data from 803 patients who underwent unilateral hip or knee arthroplasty. Patients' digital clinical records were reviewed for eligibility...
September 12, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28900238/limitations-of-qdot-labelling-compared-to-directly-conjugated-probes-for-single-particle-tracking-of-b-cell-receptor-mobility
#19
Libin Abraham, Henry Y Lu, Rebeca Cardim Falcão, Joshua Scurll, Timothy Jou, Brian Irwin, Reza Tafteh, Michael R Gold, Daniel Coombs
Single-particle tracking (SPT) is a powerful method for exploring single-molecule dynamics in living cells with nanoscale spatiotemporal resolution. Photostability and bright fluorescence make quantum dots (Qdots) a popular choice for SPT. However, their large size could potentially alter the mobility of the molecule of interest. To test this, we labelled B cell receptors on the surface of B-lymphocytes with monovalent Fab fragments of antibodies that were either linked to Qdots via streptavidin or directly conjugated to the small organic fluorophore Cy3...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891037/analytical-insight-into-degradation-processes-of-aminopolyphosphonates-as-potential-factors-that-induce-cyanobacterial-blooms
#20
Damian Drzyzga, Jacek Lipok
Aminopolyphosphonates (AAPs) are commonly used industrial complexones of metal ions, which upon the action of biotic and abiotic factors undergo a breakdown and release their substructures. Despite the low toxicity of AAPs towards vertebrates, products of their transformations, especially those that contain phosphorus and nitrogen, can affect algal communities. To verify whether such chemical entities are present in water ecosystems, much effort has been made in developing fast, inexpensive, and reliable methods for analyzing phosphonates...
September 10, 2017: Environmental Science and Pollution Research International
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