keyword
MENU ▼
Read by QxMD icon Read
search

Area body network

keyword
https://www.readbyqxmd.com/read/28510506/signaling-at-the-crossroads-matrix-derived-proteoglycan-and-reactive-oxygen-species-signaling
#1
Madalina-Viviana Nastase, Andrea Janicova, Malgorzata Wygrecka, Liliana Schaefer
SIGNIFICANCE: Proteoglycans (PGs), besides their structural contribution, have emerged as dynamic components that mediate a multitude of cellular events. The various roles of PGs are attributed to their structure, spatial localization, and ability to act as ligands and receptors. Reactive oxygen species (ROS) are small mediators, which are generated in physiological and pathological conditions. Besides their reactivity and ability to induce oxidative stress, a growing body of data suggests that ROS signaling is more relevant than direct radical damage in development of human pathologies...
May 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28509849/low-duty-cycling-mac-protocol-for-low-data-rate-medical-wireless-body-area-networks
#2
Chongqing Zhang, Yinglong Wang, Yongquan Liang, Minglei Shu, Jinquan Zhang, Lina Ni
Wireless body area networks (WBANs) are severely energy constrained, and how to improve the energy efficiency so as to prolong the network lifetime as long as possible is one of the most important goals of WBAN research. Low data-rate WBANs are promising to cut down the energy consumption and extend the network lifetime. Considering the characteristics and demands of low data-rate WBANs, a low duty-cycling medium access control (MAC) protocol is specially designed for this kind of WBAN in this paper. Longer superframes are exploited to cut down the energy consumed on the transmissions and receptions of redundant beacon frames...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28508034/laminar-localization-and-projection-specific-properties-of-presubicular-neurons-targeting-the-lateral-mammillary-nucleus-thalamus-or-medial-entorhinal-cortex
#3
Li-Wen Huang, Jean Simonnet, Mérie Nassar, Louis Richevaux, Roxanne Lofredi, Desdemona Fricker
The presubiculum (PrS) is part of an interconnected network of distributed brain regions where individual neurons signal the animals heading direction. PrS sends axons to medial entorhinal cortex (MEC), it is reciprocally connected with anterior thalamic nuclei (ATNs), and it sends feedback projections to the lateral mammillary nucleus (LMN), involved in generating the head direction signal. The intrinsic properties of projecting neurons will influence the pathway-specific transmission of activity. Here, we used projection-specific labeling of presubicular neurons to identify MEC-, LMN-, and ATN-projecting neurons in mice...
March 2017: ENeuro
https://www.readbyqxmd.com/read/28507435/mesoporous-silica-nanoparticles-trigger-mitophagy-in-endothelial-cells-and-perturb-neuronal-network-activity-in-a-size-and-time-dependent-manner
#4
Antonina Orlando, Emanuela Cazzaniga, Maria Tringali, Francesca Gullo, Andrea Becchetti, Stefania Minniti, Francesca Taraballi, Ennio Tasciotti, Francesca Re
PURPOSE: Mesoporous silica nanoparticles (MSNPs) are excellent candidates for biomedical applications and drug delivery to different human body areas, the brain included. Although toxicity at cellular level has been investigated, we are still far from using MSNPs in the clinic, because the mechanisms involved in the cellular responses activated by MSNPs have not yet been elucidated. MATERIALS AND METHODS: This study used an in vitro multiparametric approach to clarify relationships among size, dose, and time of exposure of MSNPs (0...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28505478/dose-assessment-in-environmental-radiological-protection-state-of-the-art-and-perspectives
#5
REVIEW
Karolina Stark, José M Goméz-Ros, Jordi Vives I Batlle, Elisabeth Lindbo Hansen, Karine Beaugelin-Seiller, Lawrence A Kapustka, Michael D Wood, Clare Bradshaw, Almudena Real, Corynne McGuire, Thomas G Hinton
Exposure to radiation is a potential hazard to humans and the environment. The Fukushima accident reminded the world of the importance of a reliable risk management system that incorporates the dose received from radiation exposures. The dose to humans from exposure to radiation can be quantified using a well-defined system; its environmental equivalent, however, is still in a developmental state. Additionally, the results of several papers published over the last decade have been criticized because of poor dosimetry...
May 12, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28499975/intracortical-signal-processing-of-periodontal-ligament-sensations-in-rat
#6
Aoi Minoda, Naoko Mizoguchi, Masayuki Kobayashi, Naoto Suda, Kazuyo Muramoto
The somatosensory information from the orofacial region, including the periodontal ligament (PDL), is processed in a manner that differs from that used for other body somatosensory information in the related cortices. It was reported that electrical stimulation to rat PDL elicited activation of the insular oral region (IOR) and the primary (S1) and secondary (S2) somatosensory cortices. However, the physiological relationship between S1 and S2/IOR is not well understood. To address this issue, we performed in vivo optical imaging using a voltage-sensitive dye...
May 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28495009/a-two-step-convolutional-neural-network-based-computer-aided-detection-scheme-for-automatically-segmenting-adipose-tissue-volume-depicting-on-ct-images
#7
Yunzhi Wang, Yuchen Qiu, Theresa Thai, Kathleen Moore, Hong Liu, Bin Zheng
Accurately assessment of adipose tissue volume inside a human body plays an important role in predicting disease or cancer risk, diagnosis and prognosis. In order to overcome limitation of using only one subjectively selected CT image slice to estimate size of fat areas, this study aims to develop and test a computer-aided detection (CAD) scheme based on deep learning technique to automatically segment subcutaneous fat areas (SFA) and visceral fat areas (VFA) depicting on volumetric CT images. A retrospectively collected CT image dataset was divided into two independent training and testing groups...
June 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28489549/secure-and-energy-efficient-data-transmission-system-based-on-chaotic-compressive-sensing-in-body-to-body-networks
#8
Haipeng Peng, Ye Tian, Jurgen Kurths, Lixiang Li, Yixian Yang, Daoshun Wang
Applications of wireless body area networks (WBANs) are extended from remote health care to military, sports, disaster relief, etc. With the network scale expanding, nodes increasing, and links complicated, a WBAN evolves to a body-to-body network. Along with the development, energy saving and data security problems are highlighted. In this paper, chaotic compressive sensing (CCS) is proposed to solve these two crucial problems, simultaneously. Compared with the traditional compressive sensing, CCS can save vast storage space by only storing the matrix generation parameters...
May 8, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28484926/effect-of-strontium-substitution-on-the-cytocompatibility-and-3-d-scaffold-structure-for-the-xsro-10-x-mgo-60sio2-20cao-10-p2o5-2%C3%A2-%C3%A2-%C3%A2-x%C3%A2-%C3%A2-%C3%A2-8-sol-gel-glasses
#9
Swati Thakur, Shikha Garg, Gurbinder Kaur, Om Prakash Pandey
In the present study, novel glasses xSrO-(10-x) MgO-60SiO2-20CaO-10 P2O5 (2 ≤ x ≤ 8, in steps of 2) are synthesized via sol-gel method. The current work focusses on the evaluation of mechanical, physical and biocompatible properties for sol-gel glasses. The pore size and surface area of these glasses were studied using BET analysis. The structural aspect of the glasses/glass ceramics was studied by XRD and Raman spectroscopy. The cytotoxicity assays were conducted for MG63 human osteosarcoma cell line...
June 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28481248/fm-uwb-towards-a-robust-low-power-radio-for-body-area-networks
#10
Vladimir Kopta, John Farserotu, Christian Enz
The Frequency Modulated Ultra-Wideband (FM-UWB) is known as a low-power, low-complexity modulation scheme targeting low to moderate data rates in applications such as wireless body area networks. In this paper, a thorough review of all FM-UWB receivers and transmitters reported in literature is presented. The emphasis is on trends in power reduction that exhibit an improvement by a factor 20 over the past eight years, showing the high potential of FM-UWB. The main architectural and circuit techniques that have led to this improvement are highlighted...
May 6, 2017: Sensors
https://www.readbyqxmd.com/read/28475110/public-auditing-with-privacy-protection-in-a-multi-user-model-of-cloud-assisted-body-sensor-networks
#11
Song Li, Jie Cui, Hong Zhong, Lu Liu
Wireless Body Sensor Networks (WBSNs) are gaining importance in the era of the Internet of Things (IoT). The modern medical system is a particular area where the WBSN techniques are being increasingly adopted for various fundamental operations. Despite such increasing deployments of WBSNs, issues such as the infancy in the size, capabilities and limited data processing capacities of the sensor devices restrain their adoption in resource-demanding applications. Though providing computing and storage supplements from cloud servers can potentially enrich the capabilities of the WBSNs devices, data security is one of the prevailing issues that affects the reliability of cloud-assisted services...
May 5, 2017: Sensors
https://www.readbyqxmd.com/read/28466452/trapy-mac-traffic-priority-aware-medium-access-control-protocol-for-wireless-body-area-network
#12
Fasee Ullah, Abdul Hanan Abdullah, Omprakash Kaiwartya, Yue Cao
Recently, Wireless Body Area Network (WBAN) has witnessed significant attentions in research and product development due to the growing number of sensor-based applications in healthcare domain. Design of efficient and effective Medium Access Control (MAC) protocol is one of the fundamental research themes in WBAN. Static on-demand slot allocation to patient data is the main approach adopted in the design of MAC protocol in literature, without considering the type of patient data specifically the level of severity on patient data...
June 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28433446/functional-magnetic-resonance-imaging-to-assess-the-neurobehavioral-impact-of-dysphotopsia-with-multifocal-intraocular-lenses
#13
Andreia M Rosa, Ângela C Miranda, Miguel Patrício, Colm McAlinden, Fátima L Silva, Joaquim N Murta, Miguel Castelo-Branco
PURPOSE: To investigate the association between dysphotopsia and neural responses in visual and higher-level cortical regions in patients who recently received multifocal intraocular lens (IOL) implants. DESIGN: Cross-sectional study. PARTICIPANTS: Thirty patients 3 to 4 weeks after bilateral cataract surgery with diffractive IOL implantation and 15 age- and gender-matched control subjects. METHODS: Functional magnetic resonance imaging (fMRI) was performed when participants viewed low-contrast grating stimuli...
April 19, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28422662/use-of-accelerometers-in-the-control-of-practical-prosthetic-arms
#14
Peter Kyberd, Adrian Poulton
Accelerometers can be used to augment the control of powered prosthetic arms. They can detect the orientation of the joint and limb and the controller can correct for the amount of torque required to move the limb. They can also be used to create a platform, with a fixed orientation relative to gravity for the object held in the hand. This paper describes three applications for this technology, in a powered wrist and powered arm. By adding sensors to the arm making these data available to the controller, the input from the user can be made simpler...
April 12, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28422062/cross-layer-design-for-optimizing-transmission-reliability-energy-efficiency-and-lifetime-in-body-sensor-networks
#15
Xi Chen, Yixuan Xu, Anfeng Liu
High transmission reliability, energy efficiency, and long lifetime are pivotal issues for wireless body area networks (WBANs. However, these performance metrics are not independent of each other, making it hard to obtain overall improvements through optimizing one single aspect. Therefore, a Cross Layer Design Optimal (CLDO) scheme is proposed to simultaneously optimize transmission reliability, energy efficiency, and lifetime of WBANs from several layers. Firstly, due to the fact that the transmission power of nodes directly influences the reliability of links, the optimized transmission power of different nodes is deduced, which is able to maximize energy efficiency in theory under the premise that requirements on delay and jitter are fulfilled...
April 19, 2017: Sensors
https://www.readbyqxmd.com/read/28406176/male-alliance-behaviour-and-mating-access-varies-with-habitat-in-a-dolphin-social-network
#16
Richard C Connor, William R Cioffi, Srđan Randić, Simon J Allen, Jana Watson-Capps, Michael Krützen
Within-species variation in social structure has attracted interest recently because of the potential to explore phenotypic plasticity and, specifically, how demographic and ecological variation influence social structure. Populations of bottlenose dolphins (Tursiops spp.) vary in male alliance formation, from no alliances to simple pairs to, in Shark Bay, Western Australia, the most complex nested alliances known outside of humans. Examination of ecological contributions to this variation is complicated by differences among populations in other potentially explanatory traits, such as phylogenetic distance, as well as female reproductive schedules, sexual size dimorphism, and body size...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28397392/higher-body-mass-index-is-associated-with-reduced-posterior-default-mode-connectivity-in-older-adults
#17
Frauke Beyer, Sharzhad Kharabian Masouleh, Julia M Huntenburg, Leonie Lampe, Tobias Luck, Steffi G Riedel-Heller, Markus Loeffler, Matthias L Schroeter, Michael Stumvoll, Arno Villringer, A Veronica Witte
Obesity is a complex neurobehavioral disorder that has been linked to changes in brain structure and function. However, the impact of obesity on functional connectivity and cognition in aging humans is largely unknown. Therefore, the association of body mass index (BMI), resting-state network connectivity, and cognitive performance in 712 healthy, well-characterized older adults of the Leipzig Research Center for Civilization Diseases (LIFE) cohort (60-80 years old, mean BMI 27.6 kg/m(2)  ± 4.2 SD, main sample: n = 521, replication sample: n = 191) was determined...
April 11, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28387745/a-survey-on-mobility-support-in-wireless-body-area-networks
#18
Beom-Su Kim, Kyong Hoon Kim, Ki-Il Kim
Wireless Body Area Networks (WBANs) have attracted research interests from the community, as more promising healthcare applications have a tendency to employ them as underlying network technology. While taking design issues, such as small size hardware as well as low power computing, into account, a lot of research has been proposed to accomplish the given tasks in WBAN. However, since most of the existing works are basically developed by assuming all nodes in the static state, these schemes therefore cannot be applied in real scenarios where network topology between sensor nodes changes frequently and unexpectedly according to human moving behavior...
April 7, 2017: Sensors
https://www.readbyqxmd.com/read/28384117/smart-phone-usage-and-addiction-among-dental-students-in-saudi-arabia-a-cross-sectional-study
#19
Elluru Venkatesh, Mohammad Yousef Al Jemal, Abdullah Saleh Al Samani
Purpose The main aim of this research is to explore measures of smart phone usage, smart phone addiction, and their associations with demographic and health behavior-related variables among dental students in Saudi Arabia. Methods A Cross sectional study involving sample of 205 dental students from Qaseem Private College were surveyed for smart phone use and addiction using the short version of the Smartphone Addiction Scale for Adolescents (SAS-SV). Results Smart phone addiction was seen in 136 (71.9%) of the 189 students...
April 6, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28383500/a-qos-optimization-approach-in-cognitive-body-area-networks-for-healthcare-applications
#20
Tauseef Ahmed, Yannick Le Moullec
Wireless body area networks are increasingly featuring cognitive capabilities. This work deals with the emerging concept of cognitive body area networks. In particular, the paper addresses two important issues, namely spectrum sharing and interferences. We propose methods for channel and power allocation. The former builds upon a reinforcement learning mechanism, whereas the latter is based on convex optimization. Furthermore, we also propose a mathematical channel model for off-body communication links in line with the IEEE 802...
April 6, 2017: Sensors
keyword
keyword
21595
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"