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Juan Pablo Amaya, Juan I Areta, Veronica S Valentinuzzi, Emmanuel Zufiaurre
The underground environment poses particular communication challenges for subterranean rodents. Some loud and low-pitched acoustic signals that can travel long distances are appropriate for long-range underground communication and have been suggested to be territorial signals. Long-range vocalizations (LRVs) are important in long-distance communication in Ctenomys tuco-tucos. We characterized the LRV of the Anillaco Tuco-Tuco (Ctenomys sp.) using recordings from free-living individuals and described the behavioral context in which this vocalization was produced during laboratory staged encounters between individuals of both sexes...
2016: PeerJ
Maria Augusta Carrasco, Clare Barrington, Caitlin Kennedy, Martha Perez, Yeycy Donastorg, Deanna Kerrigan
This study explores social cohesion as a strategy used by female sex workers to address layered HIV and sex work-related stigma. Data derive from a thematic analysis of 23 in-depth interviews and 2 focus groups with female sex workers living with HIV enrolled in a multi-level HIV/STI prevention, treatment and care intervention in Santo Domingo, Dominican Republic. Drawing on Foucault's conceptualisation of modern power, discipline and resistance, we argue that social cohesion provides the psychosocial space (of trust, solidarity and mutual aid) to subvert oppressive societal norms, enabling the reconstruction of identity...
October 20, 2016: Culture, Health & Sexuality
Erica Roitero, Federico Lasserre, Marc Anglada, Frank Mücklich, Emilio Jiménez-Piqué
OBJECTIVE: The aim of this work is to generate micrometric linear patterns with different topography on dental grade zirconia by means of UV laser interference and to assess the quality of the produced surface, both in term of the geometry produced and of the surface damage induced in the material. METHODS: The third harmonic of a Q-switched Nd:YAG laser (355nm, pulse duration of 10ns and repetition rate of 1Hz) was employed to pattern the surface of 3Y-TZP with micrometric-spaced lines...
October 10, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Elaheh Alizadeh, Samanthe Merrick Lyons, Jordan Marie Castle, Ashok Prasad
We study the shape characteristics of osteosarcoma cancer cell lines on surfaces of differing hydrophobicity using Zernike moments to represent cell shape. We compare the shape characteristics of four invasive cell lines with a corresponding less-invasive parental line on three substrates. Cell shapes of each pair of cell lines are quite close and display overlapping characteristics. To quantitatively study shape changes in high-dimensional parameter space we project down to principal component space and define a vector that summarizes average shape differences...
October 13, 2016: Integrative Biology: Quantitative Biosciences From Nano to Macro
Erica L Middleton, Myrna F Schwartz, Katherine A Rawson, Hilary Traut, Jay Verkuilen
Purpose: The purpose of this article was to examine how different types of learning experiences affect naming impairment in aphasia. Methods: In 4 people with aphasia with naming impairment, we compared the benefits of naming treatment that emphasized retrieval practice (practice retrieving target names from long-term memory) with errorless learning (repetition training, which preempts retrieval practice) according to different schedules of learning. The design was within subjects...
October 7, 2016: Journal of Speech, Language, and Hearing Research: JSLHR
David Albrecht, Christian M Winterflood, Mohsen Sadeghi, Thomas Tschager, Frank Noé, Helge Ewers
The axon initial segment (AIS) is enriched in specific adaptor, cytoskeletal, and transmembrane molecules. During AIS establishment, a membrane diffusion barrier is formed between the axonal and somatodendritic domains. Recently, an axonal periodic pattern of actin, spectrin, and ankyrin forming 190-nm-spaced, ring-like structures has been discovered. However, whether this structure is related to the diffusion barrier function is unclear. Here, we performed single-particle tracking time-course experiments on hippocampal neurons during AIS development...
October 10, 2016: Journal of Cell Biology
M Kodaira, Y Sekijima, N Ohashi, Y Takahashi, K Ueno, D Miyazaki, S Ikeda
Compression neuropathy of the common peroneal nerve (CPN) at the fibula head is a common condition, but it has not attracted attention in working environments. Here, we report a 38-year-old sewer pipe worker who presented with bilateral CPN palsy following 6h working with a squatting posture in a narrow sewer pipe. During the work, he could not stretch his legs sufficiently because of the confined space. His symptoms deteriorated with repetition of the same work for 1 week. Motor nerve conduction study showed conduction block at the fibula head of bilateral CPNs, compatible with compression neuropathy at this lesion...
September 30, 2016: Occupational Medicine
Sami Al-Nawaiseh, Fabian Thieltges, Zengping Liu, Claudine Strack, Ralf Brinken, Norbert Braun, Marc Wolschendorf, Arvydas Maminishkis, Nicole Eter, Boris V Stanzel
Age related macular degeneration (AMD), retinitis pigmentosa, and other RPE related diseases are the most common causes for irreversible loss of vision in adults in industrially developed countries. RPE transplantation appears to be a promising therapy, as it may replace dysfunctional RPE, restore its function, and thereby vision. Here we describe a method for transplanting a cultured RPE monolayer on a scaffold into the subretinal space (SRS) of rabbits. After vitrectomy xenotransplants were delivered into the SRS using a custom made shooter consisting of a 20-gauge metallic nozzle with a polytetrafluoroethylene (PTFE) coated plunger...
2016: Journal of Visualized Experiments: JoVE
Xin Zhao, Guoqing Hu, Bofeng Zhao, Cui Li, Yingling Pan, Ya Liu, Takeshi Yasui, Zheng Zheng
Dual-comb spectroscopy holds the promise as real-time, high-resolution spectroscopy tools. However, in its conventional schemes, the stringent requirement on the coherence between two lasers requires sophisticated control systems. By replacing control electronics with an all-optical dual-comb lasing scheme, a simplified dual-comb spectroscopy scheme is demonstrated using one dual-wavelength, passively mode-locked fiber laser. Pulses with a intracavity-dispersion-determined repetition-frequency difference are shown to have good mutual coherence and stability...
September 19, 2016: Optics Express
Endre Koritar
This paper explores how standard analytic technique may result in a repetition of past traumatic experiences in the transference and countertransference analytic situation. Relaxation and elasticity of technique can lead to re-integration of previously fragmented ego functions, and in remembering and re-experiencing of previously repressed symbolic representations of fragmenting past traumatic experiences, resulting in neocatharsis and working through, thus healing wounds and scars sustained in self development...
September 19, 2016: American Journal of Psychoanalysis
Chandu Vemuri, Payam Salehi, Jaime Benarroch-Gampel, Lauren N McLaughlin, Robert W Thompson
Venous thoracic outlet syndrome (VTOS) is uncommon but most frequently occurs in young, active, healthy patients. This condition typically presents as subclavian vein (SCV) effort thrombosis, also known as Paget-Schroetter syndrome. The pathophysiology underlying VTOS is chronic repetitive compression injury of the SCV in the costoclavicular space, resulting in progressive venous scarring, focal stenosis, and eventual thrombosis. Clinical evaluation includes a history and physical examination followed by catheter-based venography, for definitive confirmation of the diagnosis and initial treatment with pharmacomechanical thrombolysis...
October 2016: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Luis D Lledó, Jorge A Díez, Arturo Bertomeu-Motos, Santiago Ezquerro, Francisco J Badesa, José M Sabater-Navarro, Nicolás García-Aracil
Post-stroke neurorehabilitation based on virtual therapies are performed completing repetitive exercises shown in visual electronic devices, whose content represents imaginary or daily life tasks. Currently, there are two ways of visualization of these task. 3D virtual environments are used to get a three dimensional space that represents the real world with a high level of detail, whose realism is determinated by the resolucion and fidelity of the objects of the task. Furthermore, 2D virtual environments are used to represent the tasks with a low degree of realism using techniques of bidimensional graphics...
2016: Frontiers in Aging Neuroscience
Stein Fekkes, Abigail E S Swillens, Hendrik H G Hansen, Anne E C M Saris, Maartje M Nillesen, Francesco Iannaccone, Patrick Segers, Chris L de Korte
Three-dimensional (3-D) strain estimation might improve the detection and localization of high strain regions in the carotid artery (CA) for identification of vulnerable plaques. This paper compares 2-D versus 3-D displacement estimation in terms of radial and circumferential strain using simulated ultrasound (US) images of a patient-specific 3-D atherosclerotic CA model at the bifurcation embedded in surrounding tissue generated with ABAQUS software. Global longitudinal motion was superimposed to the model based on the literature data...
October 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
C H Raymond Ooi, Md Ridzuan Talib
We report on some interesting phenomena in the focusing and scattering of femtosecond laser pulses in free space that provide insights on intense laser plasma interactions. The scattered image in the far field is analyzed and the connection with the observed structure of the plasma at the focus is discussed. We explain the physical mechanisms behind the changes in the colorful and intricate image formed by scattering from the plasma for different compressions, as well as orientations of plano-convex lens. The laser power does not show significant effect on the images...
2016: Scientific Reports
Christoph Hönigsperger, Maximiliano J Nigro, Johan F Storm
The medial entorhinal cortex (mEC) is strongly involved in spatial navigation, memory, dementia and epilepsy. Although potassium channels shape neuronal activity, their roles in mEC are largely unknown. We used the new Kv2 blocker Guangxitoxin-1E (GTx, 10-100 nm) in rat brain slices to investigate Kv2 channel functions in mEC layer II stellate cells (SCs). These neurons project to the hippocampus and are thought to be grid cells representing space. Voltage clamp recordings from SCs nucleated patches showed that GTx inhibited a delayed rectifier K(+) current activating beyond -30 mV, but not transient, A-type current...
August 26, 2016: Journal of Physiology
Elisabeth Wischnitzki, Kornel Burg, Maria Berenyi, Eva Maria Sehr
Here, we describe a method capable of filtering the hypomethylated part of plant genomes, the so-called hypomethylome. The principle of the method is based on the filtration and sequence analysis of small DNA fragments generated by methylation-sensitive four-cutter restriction endonucleases, possessing ((5me))CpG motifs in their recognition sites. The majority of these fragments represent genes and their flanking regions containing also regulatory elements-the gene space of the genome. Besides the enrichment of the gene space, another advantage of the method is the simultaneous depletion of repetitive elements due to their methylated nature and its easy application on complex and large plant genomes...
2016: Methods in Molecular Biology
Henry C Tuckwell, Susanne Ditlevsen
We consider a classical space-clamped Hodgkin-Huxley model neuron stimulated by synaptic excitation and inhibition with conductances represented by Ornstein-Uhlenbeck processes. Using numerical solutions of the stochastic model system obtained by an Euler method, it is found that with excitation only, there is a critical value of the steady-state excitatory conductance for repetitive spiking without noise, and for values of the conductance near the critical value, small noise has a powerfully inhibitory effect...
October 2016: Neural Computation
Fabio Bianchi, Felix Hofmann, Andrew J Smith, Mark S Thompson
: The accumulation of microstructural collagen damage following repetitive loading is linked to painful and debilitating tendon injuries. As a hierarchical, semi-crystalline material, collagen mechanics can be studied using X-ray diffraction. The aim of the study was to describe multi-structural changes in tendon collagen following controlled plastic damage (5% permanent strain). We used small angle X-ray scattering (SAXS) to interrogate the spacing of collagen molecules within a fibril, and wide angle X-ray scattering (WAXS) to measure molecular strains under macroscopic loading...
November 2016: Acta Biomaterialia
Jia-Shiou Liao
Purpose: This study investigated the acoustic properties of 6 Taiwan Southern Min vowels produced by 10 laryngeal speakers (LA), 10 speakers with a pneumatic artificial larynx (PA), and 8 esophageal speakers (ES). Method: Each of the 6 monophthongs of Taiwan Southern Min (/i, e, a, ɔ, u, ə/) was represented by a Taiwan Southern Min character and appeared randomly on a list 3 times (6 Taiwan Southern Min characters × 3 repetitions = 18 tokens). Each Taiwan Southern Min character in this study has the same syllable structure, /V/, and all were read with tone 1 (high and level)...
August 17, 2016: American Journal of Speech-language Pathology
Christian Stenzel
The International Space Station (ISS) is the largest technical vehicle ever built by mankind. It provides a living area for six astronauts and also represents a laboratory in which scientific experiments are conducted in an extraordinary environment. The deployed sensor technology contributes significantly to the operational and scientific success of the station. The sensors on board the ISS can be thereby classified into two categories which differ significantly in their key features: (1) sensors related to crew and station health, and (2) sensors to provide specific measurements in research facilities...
September 2016: Analytical and Bioanalytical Chemistry
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