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https://www.readbyqxmd.com/read/28448464/bayesian-device-free-localization-and-tracking-in-a-binary-rf-sensor-network
#1
Zhenghuan Wang, Heng Liu, Shengxin Xu, Xiangyuan Bu, Jianping An
Received-signal-strength-based (RSS-based) device-free localization (DFL) is a promising technique since it is able to localize the person without attaching any electronic device. This technology requires measuring the RSS of all links in the network constituted by several radio frequency (RF) sensors. It is an energy-intensive task, especially when the RF sensors work in traditional work mode, in which the sensors directly send raw RSS measurements of all links to a base station (BS). The traditional work mode is unfavorable for the power constrained RF sensors because the amount of data delivery increases dramatically as the number of sensors grows...
April 27, 2017: Sensors
https://www.readbyqxmd.com/read/28448151/methoxysulfinyl-radical-ch3oso-gas-phase-generation-photochemistry-and-oxidation
#2
Qifan Liu, Zhuang Wu, Jian Xu, Yan Lu, Hongmin Li, Xiaoqing Zeng
Methylsulfoxide radicals CH3SOx (x = 1-4) are key reactive sulfur species (RSS) in the atmospheric oxidation of volatile organic sulfur compounds (VOSCs). Through flash vacuum pyrolysis (FVP) of trifluoromethanesulfinic acid methyl ester CF3S(O)OCH3 at 1000 K, the methoxysulfinyl radical CH3OSO has been generated in the gas phase and subsequently characterized in cryogenic N2, Ar, and Ne matrices by IR spectroscopy. Upon 266 nm laser irradiation, CH3OSO efficiently isomerizes to the less stable methylsulfonyl radical CH3SO2 in matrices without noticeable decomposition...
April 27, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28447227/the-efficacy-of-serratus-anterior-plane-block-in-analgesia-for-thoracotomy-a-retrospective-study
#3
Korgün Ökmen, Burcu Metin Ökmen
PURPOSE: A multimodal analgesic approach is necessary for post-thoracotomy pain, which can be severe. Intravenous access, central and peripheral nerve blocks are frequently used. The aim of this study was to evaluate the efficacy of serratus anterior plane block (SAPB) in the management of post-thoracotomy pain. METHODS: A total of 40 patients who underwent thoracotomy between January 2014 and January 2016 were retrospectively analyzed. The patients were divided into two groups: Group M (intravenous patient-controlled analgesia morphine; n = 20) and Group S (intravenous patient-controlled analgesia morphine + SAPB; n = 20)...
April 26, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28443673/fluorescent-probes-and-selective-inhibitors-for-biological-studies-of-h2s-and-polysulfide-mediated-signaling
#4
Yoko Takano, Honami Echizen, Kenjiro Hanaoka
SIGNIFICANCE: Hydrogen sulfide (H2S) plays roles in many physiological processes, including relaxation of vascular smooth muscles, mediation of neurotransmission, inhibition of insulin signaling, and regulation of inflammation. Also, hydropersulfide (R-S-SH) and polysulfide (-S-Sn-S-) have recently been identified as reactive sulfur species (RSS) that regulate the bioactivities of multiple proteins via S-sulfhydration of cysteine residues (protein Cys-SSH) and show the cytoprotection...
April 26, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28429269/alternative-carbon-dioxide-modelling-approaches-accounting-for-high-residual-gases-in-landgem
#5
Nathan Bruce, Kelvin Tsun Wai Ng, Amy Richter
High Canadian waste disposal rates necessitate landfill gas monitoring and accurate forecasting. CO2 estimates in LandGEM version 3.02 currently rest on the assumptions that CO2 is a function of CH4, where the two gases make up nearly 100% of landfill gas content, leading to overestimated CO2 collection estimates. A total of 25 cases (five formulas, five approaches) compared annual CO2 collection at four western Canadian landfills. Despite common use in literature, the 1:1 ratio of CH4 to CO2 was not recommended to forecast landfill gas collection in cold climates...
April 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28422846/application-of-remifentanil-for-conscious-sedation-and-analgesia-in-short-term-ercp-and-est-surgery
#6
Guo-Qiang Sun, Bao-Feng Gao, Guan-Jun Li, Yun-Long Lei, Jie Li
This study aims to observe and evaluate the use of remifentanil in conscious sedation and analgesia for the safety and comfort of patients undergoing short-term endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic sphincterotomy (EST).Sixty-eight patients who underwent ERCP and EST were randomly divided into two groups: research group and control group. Patients in the research group were intravenously injected with remifentanil (80-2/3* age) for 1 to 2 minutes, combined with the intravenous injection of propofol (20-30 mg) during the course of treatment...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28420187/device-free-localization-via-an-extreme-learning-machine-with-parameterized-geometrical-feature-extraction
#7
Jie Zhang, Wendong Xiao, Sen Zhang, Shoudong Huang
Device-free localization (DFL) is becoming one of the new technologies in wireless localization field, due to its advantage that the target to be localized does not need to be attached to any electronic device. In the radio-frequency (RF) DFL system, radio transmitters (RTs) and radio receivers (RXs) are used to sense the target collaboratively, and the location of the target can be estimated by fusing the changes of the received signal strength (RSS) measurements associated with the wireless links. In this paper, we will propose an extreme learning machine (ELM) approach for DFL, to improve the efficiency and the accuracy of the localization algorithm...
April 17, 2017: Sensors
https://www.readbyqxmd.com/read/28420108/a-robust-crowdsourcing-based-indoor-localization-system
#8
Baoding Zhou, Qingquan Li, Qingzhou Mao, Wei Tu
WiFi fingerprinting-based indoor localization has been widely used due to its simplicity and can be implemented on the smartphones. The major drawback of WiFi fingerprinting is that the radio map construction is very labor-intensive and time-consuming. Another drawback of WiFi fingerprinting is the Received Signal Strength (RSS) variance problem, caused by environmental changes and device diversity. RSS variance severely degrades the localization accuracy. In this paper, we propose a robust crowdsourcing-based indoor localization system (RCILS)...
April 14, 2017: Sensors
https://www.readbyqxmd.com/read/28419803/hydropersulfides-h-atom-transfer-agents-par-excellence
#9
Jean-Philippe R Chauvin, Markus Griesser, Derek A Pratt
Hydropersulfides (RSSH) are formed endogenously via the reaction of the gaseous biotransmitter hydrogen sulfide (H2S) and disulfides (RSSR) and/or sulfenic acids (RSOH). RSSH have been investigated for their ability to store H2S in vivo and as a line of defence against oxidative stress, from which it is clear that RSSH are much more reactive to two-electron oxidants than thiols. Herein we describe the results of our investigations into the H-atom transfer chemistry of RSSH, contrasting it with the well-known H-atom transfer chemistry of thiols...
April 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28412050/-the-correlation-among-the-ramsay-sedation-scale-richmond-agitation-sedation-scale-and-riker-sedation-agitation-scale-during-midazolam-remifentanil-sedation
#10
Turgut Namigar, Karacalar Serap, Akdaş Tekin Esra, Odacılar Özgül, Öztürk Ali Can, Ak Aysel, Ali Achmet
BACKGROUND AND OBJECTIVES: Sedative and analgesic treatment administered to critically ill patients need to be regularly assessed to ensure that previously stated goals are well achieved as the risk of complications of oversedation is minimized. We revised and prospectively tested the Ramsay Sedation Scale (RSS) for interrater reliability and compared it with the Riker Sedation-Agitation Scale (RSAS) and the Richmond Agitation Sedation Scale (RASS) to test construct validity during midazolam-remifentanil sedation...
April 12, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28398072/the-reactive-species-interactome-evolutionary-emergence-biological-significance-and-opportunities-for-redox-metabolomics-and-personalized-medicine
#11
Miriam Margherita Cortese-Krott, Anne Koning, Gunter Georg Kuhnle, Peter Nagy, Christopher Bianco, Andreas Pasch, David A Wink, Jon Fukuto, Alan A Jackson, Harry van Goor, Kenneth R Olson, Martin Feelisch
SIGNIFICANCE: Oxidative stress is thought to account for aberrant redox homeostasis and contribute to aging and disease. However, more often than not administration of antioxidants is ineffective, suggesting our current understanding of the underlying regulatory processes is incomplete. Recent Advances. Similar to reactive oxygen and nitrogen species (ROS, RNS), reactive sulfur species (RSS) are now emerging as important signaling molecules, targeting regulatory cysteine redox switches in proteins, affecting gene regulation, ion transport, intermediary metabolism and mitochondrial function...
April 11, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28397914/improving-target-amino-acid-selectivity-in-a-permissive-aminoacyl-trna-synthetase-through-counter-selection
#12
Itthipol Sungwienwong, Zachary M Hostetler, Robert J Blizzard, Joseph J Porter, Camden M Driggers, Lea Z Mbengi, José A Villegas, Lee C Speight, Jeffery G Saven, John J Perona, Rahul M Kohli, Ryan A Mehl, E James Petersson
The amino acid acridon-2-ylalanine (Acd) can be a valuable probe of protein dynamics, either alone or as part of a Förster resonance energy transfer (FRET) or photo-induced electron transfer (eT) probe pair. We have previously reported the genetic incorporation of Acd by an aminoacyl tRNA synthetase (RS). However, this RS, developed from a library of permissive RSs, also incorporates N-phenyl-aminophenylalanine (Npf), a trace byproduct of one Acd synthetic route. We have performed negative selections in the presence of Npf and analyzed the selectivity of the resulting AcdRSs by in vivo protein expression and detailed kinetic analyses of the purified RSs...
April 11, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28394268/fusing-bluetooth-beacon-data-with-wi-fi-radiomaps-for-improved-indoor-localization
#13
Loizos Kanaris, Akis Kokkinis, Antonio Liotta, Stavros Stavrou
Indoor user localization and tracking are instrumental to a broad range of services and applications in the Internet of Things (IoT) and particularly in Body Sensor Networks (BSN) and Ambient Assisted Living (AAL) scenarios. Due to the widespread availability of IEEE 802.11, many localization platforms have been proposed, based on the Wi-Fi Received Signal Strength (RSS) indicator, using algorithms such as K-Nearest Neighbour (KNN), Maximum A Posteriori (MAP) and Minimum Mean Square Error (MMSE). In this paper, we introduce a hybrid method that combines the simplicity (and low cost) of Bluetooth Low Energy (BLE) and the popular 802...
April 10, 2017: Sensors
https://www.readbyqxmd.com/read/28393631/prebiotic-evaluation-of-red-seaweed-kappaphycus-alvarezii-using-in-vitro-colon-model
#14
Dayang Marshitah Bajury, Muhamad Hanif Rawi, Iqbal Hakim Sazali, Aminah Abdullah, Shahrul Razid Sarbini
Red seaweed (Kappaphycus alvarezii) cultivated from Sabah (RSS) and Langkawi (RSL) were digested using in vitro mouth, gastric and duodenal model. The digested seaweed then fermented in a pH-controlled batch culture system inoculated with human faeces to mimic the distal colon. Bacterial enumeration were monitored using fluorescent in situ hybridisation, and the fermentation end products, the short chain fatty acids (SCFA), were analysed using HPLC. Both RSS and RSL showed significant increase of Bifidobacterium sp...
April 10, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28393027/weighing-of-risk-factors-for-penetrating-keratoplasty-graft-failure-application-of-risk-score-system
#15
Abdo Karim Tourkmani, Valeria Sánchez-Huerta, Guillermo De Wit, Jaime D Martínez, David Mingo, Ignacio Mahillo-Fernández, Ignacio Jiménez-Alfaro
AIM: To analyze the relationship between the score obtained in the Risk Score System (RSS) proposed by Hicks et al with penetrating keratoplasty (PKP) graft failure at 1y postoperatively and among each factor in the RSS with the risk of PKP graft failure using univariate and multivariate analysis. METHODS: The retrospective cohort study had 152 PKPs from 152 patients. Eighteen cases were excluded from our study due to primary failure (10 cases), incomplete medical notes (5 cases) and follow-up less than 1y (3 cases)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28392711/dynamic-abnormalities-of-spontaneous-brain-activity-in-women-with-primary-dysmenorrhea
#16
Lingmin Jin, Xuejuan Yang, Peng Liu, Jinbo Sun, Fei Chen, Ziliang Xu, Wei Qin, Jie Tian
PURPOSE: This study aimed to investigate the regional spontaneous brain activity changes in primary dysmenorrhea (PD) patients in different phases of the menstrual cycle by regional homogeneity (ReHo) analysis. PATIENTS AND METHODS: Thirty-three PD patients and 32 healthy controls (HCs) separately received resting-state functional magnetic resonance imaging during menstrual phase and follicular phase (non-menstrual phase). Cox retrospective symptom scale (RSS), Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS) were applied to assess related symptoms and emotions...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28378398/a-nationwide-cross-sectional-survey-on-unusual-sleep-postures-and-sleep-disordered-breathing-related-symptoms-in-people-with-down-syndrome
#17
H Kuroda, H Sawatari, S Ando, T Ohkusa, A Rahmawati, J Ono, M Nishizaka, N Hashiguchi, F Matsuoka, A Chishaki
BACKGROUND: People with Down syndrome (DS) often have sleep-disordered breathing (SDB). Unusual sleep postures, such as leaning forward and sitting, are observed in people with DS. This study aimed to clarify the prevalence of unusual sleep postures and their relationships with SDB-related symptoms (SDB-RSs), such as snoring, witnessed apnoea, nocturnal awakening and excessive daytime sleepiness. METHODS: A questionnaire, including demographic characteristics and the presence of unusual sleep postures, as well as SDB-RSs, was completed by 1149 parents of people with DS from Japan...
April 5, 2017: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/28370095/tracking-and-compensation-of-respiration-pattern-by-an-automatic-compensation-system
#18
Lai-Lei Ting, Ho-Chiao Chuang, Chia-Chun Kuo, Li-An Jian, Ming-Yuan Huang, Ai-Ho Liao, Der-Chi Tien, Shiu-Chen Jeng, Jeng-Fong Chiou
PURPOSE: This study aimed to determine the feasibility of using an ultrasound image tracking algorithm (UITA) combined with a respiration compensating system (RCS) to track and compensate the respiration pattern of the diaphragm in real time. METHODS: Diaphragm motions and various respiration patterns were tracked and captured in volunteers using our previously developed UITA [1]. A diaphragm phantom was placed on a respiration simulation system (RSS) that received signals with different respiration patterns to simulate actual human respiration signals...
March 30, 2017: Medical Physics
https://www.readbyqxmd.com/read/28369955/effect-of-extrusion-on-physicochemical-properties-digestibility-and-phenolic-profiles-of-grit-fractions-obtained-from-dry-milling-of-normal-and-waxy-corn
#19
Sheetal Thakur, Narpinder Singh, Amritpal Kaur, Baljit Singh
Extrusion behavior of grits obtained from 3 successive reductions of dry milling of 2 normal corn types and 1 waxy corn was studied at different extrusion temperatures (ET). The grit from each reduction stage (RS) showed the presence of base-hydrolyzed bound protocatechuic acid, p-coumaric acid, sinapic acid, ferulic acid, and quercetin, and the concentrations of these decreased after acid hydrolysis and that of gallic acid increased. African tall grit from all RSs showed the highest average specific mechanical energy (SME) and torque, while waxy corn grit had the lowest...
March 29, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28362171/effects-of-dietary-resistant-starch-on-the-wnt-signaling-pathway-and-preneoplastic-cells-in-the-colons-of-azoxymethane-treated-rats
#20
Nicole Cray, Yinsheng Zhao, Yinan Fang, Peng Liu, Linda Pollak, Susan Duvick, Diane F Birt, Elizabeth M Whitley
Dietary resistant starch (RS) has been suggested to reduce colonic neoplasia. To determine the effects of digestion-resistant cornstarch on colonic carcinogenesis and Wnt signaling in azoxymethane (AOM)-treated F344 rats, diets containing naturally occurring RS from corn lines derived partially from Guat209 (GUAT), AR16035 (AR), or a hybrid (ARxGUAT), containing 34.5 ± 2.0, 0.2 ± 0.1, and 1.9 ± 0.1% RS, respectively, were fed at 55% of the diet. GUAT-fed rats had increased cecal content and tissue weight and decreased cecal pH compared with AR- or ARxGUAT-fed rats...
March 31, 2017: Nutrition and Cancer
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