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https://www.readbyqxmd.com/read/29054109/influence-of-backside-loading-on-the-floating-mass-transducer-an-in-vitro-experimental-study
#1
Antoniu-Oreste Gostian, Martin Sylvester Otte, David Pazen, Magdalene Ortmann, David Schwarz, Karl Bernd Hüttenbrink, Dirk Beutner
HYPOTHESIS: The vibration of the floating mass transducer (FMT) of a single active middle-ear implant (AMEI) is distinctly influenced by the properties of the material coupled to its back side. BACKGROUND: In round window vibroplasty, the FMT needs to be padded against the surrounding bone opposite from the round window membrane. This represents one factor influencing its performance as a round window driver. Therefore, we examined the effects of different materials linked to the back side of an FMT on its vibration range...
October 20, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29054087/using-local-knowledge-and-sustainable-transport-to-promote-a-greener-city-the-case-of-bucharest-romania
#2
Mihai R Niță, Denisa L Badiu, Diana A Onose, Athanasios A Gavrilidis, Simona R Grădinaru, Irina I Năstase, Raffaele Lafortezza
Cities undergoing climate change and rapid urbanization are faced with significant transformational processes that affect the environment and society, challenging them to become more sustainable and resilient. The promotion of nature-based solutions represents an efficient approach to meet sustainability targets in cities and improve the quality of life of citizens. The association of large components of green infrastructure, such as urban parks, with physical activity can counteract the sedentary lifestyle endemic to cities and improve the overall health and well-being of individuals (Carrus et al...
October 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/29054067/a-novel-surface-plasmon-resonance-biosensor-based-on-the-pda-agnps-pda-au-film-sensing-platform-for-horse-igg-detection
#3
Ning Wang, Di Zhang, Xinyu Deng, Ying Sun, Xinghua Wang, Pinyi Ma, Daqian Song
Herein we report a novel polydopamine-silver nanoparticle-polydopamine-gold (PDA-AgNPs-PDA-Au) film based surface plasmon resonance (SPR) biosensor for horse IgG detection. The PDA-AgNPs-PDA-Au film sensing platform was built on Au-film via layer-by-layer self-assembly. Ag ion was reduced in situ to AgNPs in presence of PDA. The top PDA layer can prevent AgNPs from being oxidized and connect with antibody via Schiff alkali reaction directly. The morphology and thickness of the modified gold film were characterized using scanning electron microscope and Talystep...
October 12, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29054040/myelin-plasticity-and-behaviour-connecting-the-dots
#4
REVIEW
Malte Sebastian Kaller, Alberto Lazari, Cristina Blanco-Duque, Cassandra Sampaio-Baptista, Heidi Johansen-Berg
Myelin sheaths in the vertebrate nervous system enable faster impulse propagation, while myelinating glia provide vital support to axons. Once considered a static insulator, converging evidence now suggests that myelin in the central nervous system can be dynamically regulated by neuronal activity and continues to participate in nervous system plasticity beyond development. While the link between experience and myelination gains increased recognition, it is still unclear what role such adaptive myelination plays in facilitating and shaping behaviour...
October 17, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29054036/snava-a-real-time-multi-fpga-multi-model-spiking-neural-network-simulation-architecture
#5
Athul Sripad, Giovanny Sanchez, Mireya Zapata, Vito Pirrone, Taho Dorta, Salvatore Cambria, Albert Marti, Karthikeyan Krishnamourthy, Jordi Madrenas
Spiking Neural Networks (SNN) for Versatile Applications (SNAVA) simulation platform is a scalable and programmable parallel architecture that supports real-time, large-scale, multi-model SNN computation. This parallel architecture is implemented in modern Field-Programmable Gate Arrays (FPGAs) devices to provide high performance execution and flexibility to support large-scale SNN models. Flexibility is defined in terms of programmability, which allows easy synapse and neuron implementation. This has been achieved by using a special-purpose Processing Elements (PEs) for computing SNNs, and analyzing and customizing the instruction set according to the processing needs to achieve maximum performance with minimum resources...
October 5, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/29053955/the-met1-linked-ubiquitin-machinery-emerging-themes-of-de-regulation
#6
REVIEW
Matous Hrdinka, Mads Gyrd-Hansen
The linear ubiquitin chain assembly complex, LUBAC, is the only known mammalian ubiquitin ligase that makes methionine 1 (Met1)-linked polyubiquitin (also referred to as linear ubiquitin). A decade after LUBAC was discovered as a cellular activity of unknown function, there are now many lines of evidence connecting Met1-linked polyubiquitin to NF-κB signaling, cell death, inflammation, immunity, and cancer. We now know that Met1-linked polyubiquitin has potent signaling functions and that its deregulation is connected to disease...
October 19, 2017: Molecular Cell
https://www.readbyqxmd.com/read/29053923/loss-and-reformation-of-ruthenium-alkylidene-connecting-olefin-metathesis-catalyst-deactivation-regeneration-and-isomerization
#7
Julien Engel, Wietse Smit, Marco Foscato, Giovanni Occhipinti, Karl W Törnroos, Vidar R Jensen
Ruthenium-based olefin metathesis catalysts are used in laboratory-scale organic synthesis across chemistry, largely thanks to their ease of handling and functional group tolerance. In spite of this robustness, these catalysts readily decompose, via little-understood pathways, to species that promote double-bond migration (isomerization) in both the 1-alkene reagents and the internal-alkene products. We have studied, using density functional theory (DFT), the reactivity of the Hoveyda-Grubbs second-generation catalyst 2 with allylbenzene, and discovered a facile new decomposition pathway...
October 20, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29053835/abnormal-intrinsic-brain-functional-network-dynamics-in-parkinson-s-disease
#8
Jinhee Kim, Marion Criaud, Sang Soo Cho, María Díez-Cirarda, Alexander Mihaescu, Sarah Coakeley, Christine Ghadery, Mikaeel Valli, Mark F Jacobs, Sylvain Houle, Antonio P Strafella
Parkinson's disease is a neurodegenerative disorder characterized by nigrostriatal dopamine depletion. Previous studies measuring spontaneous brain activity using resting state functional magnetic resonance imaging have reported abnormal changes in broadly distributed whole-brain networks. Although resting state functional connectivity, estimating temporal correlations between brain regions, is measured with the assumption that intrinsic fluctuations throughout the scan are stable, dynamic changes of functional connectivity have recently been suggested to reflect aspects of functional capacity of neural systems, and thus may serve as biomarkers of disease...
October 5, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053816/histomorphometric-study-of-the-anterior-latissimus-dorsi-muscle-and-evaluation-of-enzymatic-markers-of-broilers-affected-with-dorsal-cranial-myopathy
#9
R Sesterhenn, F M Siqueira, A C Hamerski, D Driemeier, S F Valle, S L Vieira, L Kindlein, V P Nascimento
Dorsal cranial myopathy (DCM), which affects the anterior latissimus dorsi (ALD) muscles of commercial broilers, is of unknown etiology, and it represents up to 6% of the partial condemnations in Brazilian slaughterhouses. This study was performed to achieve histomorphometric characterizations of the ALD muscles from male Cobb 500 broilers slaughtered at either 35 d or 42 d and to evaluate the effects of DCM on the enzymatic markers aspartate aminotransferase (AST), alanine aminotransferase (ALT), creatine kinase (CK), and lactate dehydrogenase (LDH) and on uric acid and creatinine metabolites...
September 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/29053778/influence-of-cerebrovascular-disease-on-brain-networks-in-prodromal-and-clinical-alzheimer-s-disease
#10
Joanna Su Xian Chong, Siwei Liu, Yng Miin Loke, Saima Hilal, Mohammad Kamran Ikram, Xin Xu, Boon Yeow Tan, Narayanaswamy Venketasubramanian, Christopher Li-Hsian Chen, Juan Zhou
Network-sensitive neuroimaging methods have been used to characterize large-scale brain network degeneration in Alzheimer's disease and its prodrome. However, few studies have investigated the combined effect of Alzheimer's disease and cerebrovascular disease on brain network degeneration. Our study sought to examine the intrinsic functional connectivity and structural covariance network changes in 235 prodromal and clinical Alzheimer's disease patients with and without cerebrovascular disease. We focused particularly on two higher-order cognitive networks-the default mode network and the executive control network...
September 19, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29053740/gene-flow-of-common-ash-fraxinus-excelsior-l-in-a-fragmented-landscape
#11
Devrim Semizer-Cuming, Erik Dahl Kjær, Reiner Finkeldey
Gene flow dynamics of common ash (Fraxinus excelsior L.) is affected by several human activities in Central Europe, including habitat fragmentation, agroforestry expansion, controlled and uncontrolled transfer of reproductive material, and a recently introduced emerging infectious disease, ash dieback, caused by Hymenoscyphus fraxineus. Habitat fragmentation may alter genetic connectivity and effective population size, leading to loss of genetic diversity and increased inbreeding in ash populations. Gene flow from cultivated trees in landscapes close to their native counterparts may also influence the adaptability of future generations...
2017: PloS One
https://www.readbyqxmd.com/read/29053724/accounting-for-the-complex-hierarchical-topology-of-eeg-phase-based-functional-connectivity-in-network-binarisation
#12
Keith Smith, Daniel Abásolo, Javier Escudero
Research into binary network analysis of brain function faces a methodological challenge in selecting an appropriate threshold to binarise edge weights. For EEG phase-based functional connectivity, we test the hypothesis that such binarisation should take into account the complex hierarchical structure found in functional connectivity. We explore the density range suitable for such structure and provide a comparison of state-of-the-art binarisation techniques, the recently proposed Cluster-Span Threshold (CST), minimum spanning trees, efficiency-cost optimisation and union of shortest path graphs, with arbitrary proportional thresholds and weighted networks...
2017: PloS One
https://www.readbyqxmd.com/read/29053657/histological-differences-in-the-adherence-of-connective-tissue-to-laser-treated-abutments-and-standard-abutments-for-dental-implants-an-experimental-pilot-study-in-humans
#13
M Blázquez-Hinarejos, R Ayuso-Montero, J-M Álvarez-López, M-C Manzanares-Céspedes, J López-López
BACKGROUND: The goal of the current study is to assess the difference in connective tissue adherence to laser microtextured versus machined titanium abutments. MATERIAL AND METHODS: Six patients were selected and each of them received 2 implants, one combined with a laser treated abutment and one with a machined abutment. After three months, the abutments were retrieved together with their surrounding gingival tissue for histological analysis. Qualitative and quantitative evaluation of microscopical images was performed to assess the presence or absence of adherence between the soft tissues and the abutment, and the percentage of soft tissue adhered to the two different surfaces...
October 20, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29053629/an-improved-indoor-positioning-system-using-rgb-d-cameras-and-wireless-networks-for-use-in-complex-environments
#14
Jaime Duque Domingo, Carlos Cerrada, Enrique Valero, Jose A Cerrada
This work presents an Indoor Positioning System to estimate the location of people navigating in complex indoor environments. The developed technique combines WiFi Positioning Systems and depth maps, delivering promising results in complex inhabited environments, consisting of various connected rooms, where people are freely moving. This is a non-intrusive system in which personal information about subjects is not needed and, although RGB-D cameras are installed in the sensing area, users are only required to carry their smart-phones...
October 20, 2017: Sensors
https://www.readbyqxmd.com/read/29053623/transfer-efficient-face-routing-using-the-planar-graphs-of-neighbors-in-high-density-wsns
#15
Eun-Seok Cho, Yongbin Yim, Sang-Ha Kim
Face routing has been adopted in wireless sensor networks (WSNs) where topological changes occur frequently or maintaining full network information is difficult. For message forwarding in networks, a planar graph is used to prevent looping, and because long edges are removed by planarization and the resulting planar graph is composed of short edges, and messages are forwarded along multiple nodes connected by them even though they can be forwarded directly. To solve this, face routing using information on all nodes within 2-hop range was adopted to forward messages directly to the farthest node within radio range...
October 20, 2017: Sensors
https://www.readbyqxmd.com/read/29053469/core-to-shell-switching-of-the-conduction-channel-on-sno2-nanowire-sensors
#16
J T Holguín-Momaca, F Espinosa-Magaña, W Antúnez-Flores, S F Olive-Méndez
A sensor based on random connections of single-crystalline SnO2 nanowires (NWs) has been fabricated for ethanol detection. The NW length of ∼10 μm leads to the formation of several random node connections between the Ag electrodes. The samples were subjected to thermal treatments under a reducing atmosphere of H2/Ar, to generate oxygen vacancies at the surface of the NWs. As a result, the core conduction channel of the NWs, where the conduction is based on electron hopping through the potential barriers at the contact nodes, switch to the surface of the NWs by the creation of an impurity band of shallow donors located at 0...
October 20, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29053459/a-neurodynamic-approach-to-distributed-optimization-with-globally-coupled-constraints
#17
Xinyi Le, Sijie Chen, Zheng Yan, Juntong Xi
In this paper, a distributed neurodynamic approach is proposed for constrained convex optimization. The objective function is a sum of local convex subproblems, whereas the constraints of these subproblems are coupled. Each local objective function is minimized individually with the proposed neurodynamic optimization approach. Through information exchange between connected neighbors only, all nodes can reach consensus on the Lagrange multipliers of all global equality and inequality constraints, and the decision variables converge to the global optimum in a distributed manner...
October 18, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/29053453/distributed-continuous-time-algorithms-for-resource-allocation-problems-over-weight-balanced-digraphs
#18
Zhenhua Deng, Shu Liang, Yiguang Hong
In this paper, a distributed resource allocation problem with nonsmooth local cost functions is considered, where the interaction among agents is depicted by strongly connected and weight-balanced digraphs. Here the decision variable of each agent is within a local feasibility constraint described as a convex set, and all the decision variables have to satisfy a network resource constraint, which is the sum of available resources. To solve the problem, a distributed continuous-time algorithm is developed by virtue of differentiated projection operations and differential inclusions, and its convergence to the optimal solution is proved via the set-valued LaSalle invariance principle...
October 17, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/29053338/disaccharides-determination-a-review-of-analytical-methods
#19
Marta Pokrzywnicka, Robert Koncki
Disaccharides are determined mainly for dietetic purposes, hence the most analyses are carried out for food and drink samples. Its content can also be used to profile groceries in order to identify the origin and quality of the products. They also can be an indicator of the rate of metabolism as well as for the control of some technological and biotechnological processes. Unfortunately most of technological analysis are performed with nonselective polarimetry methods. Sugars due to specific physicochemical properties of compounds are difficult to determine with classical analytical techniques...
October 20, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/29053298/hyperinvariant-tensor-networks-and-holography
#20
Glen Evenbly
We propose a new class of tensor network state as a model for the AdS/CFT correspondence and holography. This class is demonstrated to retain key features of the multiscale entanglement renormalization ansatz (MERA), in that they describe quantum states with algebraic correlation functions, have free variational parameters, and are efficiently contractible. Yet, unlike the MERA, they are built according to a uniform tiling of hyperbolic space, without inherent directionality or preferred locations in the holographic bulk, and thus circumvent key arguments made against the MERA as a model for AdS/CFT...
October 6, 2017: Physical Review Letters
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