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https://www.readbyqxmd.com/read/29529880/intradialytic-neuromuscular-electrical-stimulation-reduces-dna-damage-in-chronic-kidney-failure-patients-a-randomized-controlled-trial
#1
Jociane Schardong, Verônica Bidinotto Brito, Thiago Dipp, Fabrício Edler Macagnan, Jenifer Saffi, Rodrigo Dm Plentz
BACKGROUND: Chronic kidney failure (CKF) patients on renal replacement therapies exhibit elevated levels of DNA lesions and this is directly related to high mortality. OBJECTIVE: This study aimed to evaluate the effect of neuromuscular electrical stimulation (NMES) on genomic damage in CKF patients on conventional hemodialysis (HD). METHODS: Twenty-one patients with CKF on HD were randomized into control (CG = 10) or neuromuscular electrical stimulation (NMESG = 11) groups...
March 12, 2018: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/29494558/magnetometer-and-gyroscope-calibration-method-with-level-rotation
#2
Zongkai Wu, Wei Wang
Micro electro mechanical system (MEMS) gyroscopes and magnetometers are usually integrated into a sensor module or chip and widely used in a variety of applications. In existing integrated gyroscope and magnetometer calibration methods, rotation in all possible orientations is a necessary condition for a good calibration result. However, rotation around two or more axes is difficult to attain, as it is limited by the range of movement of vehicles such as cars, ships, or planes. To solve this problem, this paper proposes an integrated magnetometer and gyroscope calibration method with level rotation...
March 1, 2018: Sensors
https://www.readbyqxmd.com/read/29473912/application-of-improved-5th-cubature-kalman-filter-in-initial-strapdown-inertial-navigation-system-alignment-for-large-misalignment-angles
#3
Wei Wang, Xiyuan Chen
In view of the fact the accuracy of the third-degree Cubature Kalman Filter (CKF) used for initial alignment under large misalignment angle conditions is insufficient, an improved fifth-degree CKF algorithm is proposed in this paper. In order to make full use of the innovation on filtering, the innovation covariance matrix is calculated recursively by an innovative sequence with an exponent fading factor. Then a new adaptive error covariance matrix scaling algorithm is proposed. The Singular Value Decomposition (SVD) method is used for improving the numerical stability of the fifth-degree CKF in this paper...
February 23, 2018: Sensors
https://www.readbyqxmd.com/read/29390243/-bardet-biedl-syndrome-and-kidney-failure-a-case-report
#4
Fabio Tattoli, Daniela Falconi, Chiara Bottaro, Maurizio Gherzi, Federico Marazzi, Marita Marengo, Ilaria Serra, Michela Tamagnone, Marco Formica
Bardet-Biedl Syndrome (BBS) is a rare multi-systemic disease with autosomal recessive transmission. BBS was at first considered to be homogeneous as for its genetics, but subsequent studies have shown an extensive gene variability. Currently, 21 genes (BBS1-21) present on different chromosomes have been mapped: these genes are responsible for BBS phenotypes and they show a great heterogeneity of mutations.The most common genes are BBS1 (locus 11q13) and BBS10.We show here the case of a 50 year old patient with BBS...
February 2018: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29228903/couple-kissing-flaps-for-successful-repair-of-severe-sacral-pressure-ulcers-in-frail-elderly-patients
#5
Jing-Chun Zhao, Bo-Ru Zhang, Kai Shi, Jia-Ao Yu, Jian Wang, Qing-Hua Yu, Lei Hong
BACKGROUND: Surgical repair of severe pressure ulcers (PUs) in elderly patients remains a challenge for clinicians due to the complicated comorbidities and the special physical characteristics of elderly patients. The objective of this study was to evaluate the application of couple-kissing flaps (CKF) in the reconstruction of sacral PUs in these patients. METHODS: Elderly patients (over 70 years) with stage 3 or stage 4 PUs who underwent CKF immediately after radical debridement between July 2012 and December 2015 were enrolled in this retrospective study...
December 11, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/29029796/robust-cubature-kalman-filter-for-gnss-ins-with-missing-observations-and-colored-measurement-noise
#6
Bingbo Cui, Xiyuan Chen, Xihua Tang, Haoqian Huang, Xiao Liu
In order to improve the accuracy of GNSS/INS working in GNSS-denied environment, a robust cubature Kalman filter (RCKF) is developed by considering colored measurement noise and missing observations. First, an improved cubature Kalman filter (CKF) is derived by considering colored measurement noise, where the time-differencing approach is applied to yield new observations. Then, after analyzing the disadvantages of existing methods, the measurement augment in processing colored noise is translated into processing the uncertainties of CKF, and new sigma point update framework is utilized to account for the bounded model uncertainties...
October 10, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28863706/multi-rate-cubature-kalman-filter-based-data-fusion-method-with-residual-compensation-to-adapt-to-sampling-rate-discrepancy-in-attitude-measurement-system
#7
Xiaoting Guo, Changku Sun, Peng Wang
This paper investigates the multi-rate inertial and vision data fusion problem in nonlinear attitude measurement systems, where the sampling rate of the inertial sensor is much faster than that of the vision sensor. To fully exploit the high frequency inertial data and obtain favorable fusion results, a multi-rate CKF (Cubature Kalman Filter) algorithm with estimated residual compensation is proposed in order to adapt to the problem of sampling rate discrepancy. During inter-sampling of slow observation data, observation noise can be regarded as infinite...
August 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28727850/hybrid-cubature-kalman-filtering-for-identifying-nonlinear-models-from-sampled-recording-estimation-of-neuronal-dynamics
#8
Mahmoud K Madi, Fadi N Karameh
Kalman filtering methods have long been regarded as efficient adaptive Bayesian techniques for estimating hidden states in models of linear dynamical systems under Gaussian uncertainty. Recent advents of the Cubature Kalman filter (CKF) have extended this efficient estimation property to nonlinear systems, and also to hybrid nonlinear problems where by the processes are continuous and the observations are discrete (continuous-discrete CD-CKF). Employing CKF techniques, therefore, carries high promise for modeling many biological phenomena where the underlying processes exhibit inherently nonlinear, continuous, and noisy dynamics and the associated measurements are uncertain and time-sampled...
2017: PloS One
https://www.readbyqxmd.com/read/28678867/gut-bacterial-peptides-with-autoimmunity-potential-as-environmental-trigger-for-late-onset-complex-diseases-in-silico-study
#9
Sapna Negi, Harpreet Singh, Anirban Mukhopadhyay
Recent evidences suggest that human gut microbiota with major component as bacteria can induce immunity. It is also known that gut lining depletes with ageing and that there is increased risk of autoimmune and inflammatory disorders with ageing. It is therefore likely that both may be correlated as depletion of gut lining exposes the gut bacterial antigens to host immune mechanisms, which may induce immunity to certain bacterial proteins, but at the same time such immunity may also be auto-immunogenic to host...
2017: PloS One
https://www.readbyqxmd.com/read/28621488/effects-of-intradialytic-neuromuscular-electrical-stimulation-on-strength-and-muscle-architecture-in-patients-with-chronic-kidney-failure-randomized-clinical-trial
#10
Jociane Schardong, Thiago Dipp, Camila Bassani Bozzeto, Marília Godoy da Silva, Gabriela Leivas Baldissera, Raíssa de Castro Ribeiro, Bruna Pan Valdemarca, Alexandre Severo do Pinho, Graciele Sbruzzi, Rodrigo Della Méa Plentz
This study aimed to evaluate the effects of neuromuscular electrical stimulation (NMES) on muscle strength and architecture, functional capacity, and endothelial function in patients with chronic kidney failure (CKF) on hemodialysis (HD). Twenty-one patients with CKF on HD were randomized into a control group (CG; n = 10) and neuromuscular electrical stimulation group (NMESG; n = 11) who received NMES in the quadriceps muscle for 8 weeks, 3 times/week (20-34 min) during HD sessions. The muscle strength of the lower limbs was evaluated by dynamometry and sit-and-stand test (SST); muscle architecture through ultrasonography; functional capacity by the distance covered in a 6-min walk test and the endothelial function by flow-mediated dilatation technique of the brachial artery...
June 16, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28385117/developing-a-framework-to-promote-children-s-health-insurance-enrollment-in-florida
#11
Jodi A Ray, Avery Rosnick-Slyker, Kristopher M Bryant, Linda A Detman, Mindy J Price, Brian Kirk, Ashley E Brunson
Florida Covering Kids & Families (FL-CKF) at the University of South Florida's Chiles Center for Healthy Mothers and Babies advocates for uninsured children and promotes outreach and enrollment in the state's children's health insurance program, Florida KidCare. FL-CKF facilitates the development of local coalitions to reach children and families throughout the state. Coalitions are provided with one-on-one training and a wide array of tools to increase effectiveness such as coalition-building resources, membership guides, and assistance in building strong local partnerships...
November 2017: Health Promotion Practice
https://www.readbyqxmd.com/read/28362347/strong-tracking-spherical-simplex-radial-cubature-kalman-filter-for-maneuvering-target-tracking
#12
Hua Liu, Wen Wu
Conventional spherical simplex-radial cubature Kalman filter (SSRCKF) for maneuvering target tracking may decline in accuracy and even diverge when a target makes abrupt state changes. To overcome this problem, a novel algorithm named strong tracking spherical simplex-radial cubature Kalman filter (STSSRCKF) is proposed in this paper. The proposed algorithm uses the spherical simplex-radial (SSR) rule to obtain a higher accuracy than cubature Kalman filter (CKF) algorithm. Meanwhile, by introducing strong tracking filter (STF) into SSRCKF and modifying the predicted states' error covariance with a time-varying fading factor, the gain matrix is adjusted on line so that the robustness of the filter and the capability of dealing with uncertainty factors is improved...
March 31, 2017: Sensors
https://www.readbyqxmd.com/read/28263849/chemical-profiles-and-pharmacological-activities-of-chang-kang-fang-a-multi-herb-chinese-medicinal-formula-for-treating-irritable-bowel-syndrome
#13
Qian Mao, Lei Shi, Zhi-Gang Wang, Yu-Hui Luo, Yin-Yu Wang, Xue Li, Min Lu, Jian-Min Ju, Jin-Di Xu, Ming Kong, Shan-Shan Zhou, Min-Qin Shen, Song-Lin Li
ETHNOPHARMACOLOGICAL RELEVANCE: Chang-Kang-Fang formula (CKF), a multi-herb traditional Chinese medicinal formula, has been clinically used for treatment of irritable bowel syndrome (IBS). The mechanisms of CKF for treating IBS and the components that are responsible for the activities were still unknown. AIM OF THE STUDY: To investigate the chemical profiles and effects of CKF on IBS model. MATERIALS AND METHODS: The chemical profiles of CKF were investigated by ultra performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UHPLC-Q/TOF-MS/MS)...
April 6, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28189092/polyomavirus-bk-and-jc-in-individuals-with-chronic-kidney-failure-kidney-transplantation-and-healthy-controls
#14
COMPARATIVE STUDY
Talita Castro, Maria Cristina Domingues Fink, Marilia Figueiredo, Paulo Henrique Braz-Silva, Cláudio Mendes Pannuti, Karem Lopez Ortega, Marina Gallottini
BACKGROUND: New clinical approaches to diagnose and monitor individuals with systemic diseases have been employed through the use of oral fluids. Polyomavirus BK (BKPyV) and JC (JCPyV) infect asymptomatically around 80% of general population worldwide remaining latent in the body. In case of immunosuppression, a replication can occur, leading to diseases. OBJECTIVE: The aim of this study was to detect and quantify BKPyV and JCPyV in oral fluids of individuals with chronic kidney failure (CKF), kidney transplantation (KT) and controls compared with their detection in blood and urine, traditionally used for this test...
April 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27911946/k-shuff-a-novel-algorithm-for-characterizing-structural-and-compositional-diversity-in-gene-libraries
#15
Kamlesh Jangid, Ming-Hung Kao, Aishwarya Lahamge, Mark A Williams, Stephen L Rathbun, William B Whitman
K-shuff is a new algorithm for comparing the similarity of gene sequence libraries, providing measures of the structural and compositional diversity as well as the significance of the differences between these measures. Inspired by Ripley's K-function for spatial point pattern analysis, the Intra K-function or IKF measures the structural diversity, including both the richness and overall similarity of the sequences, within a library. The Cross K-function or CKF measures the compositional diversity between gene libraries, reflecting both the number of OTUs shared as well as the overall similarity in OTUs...
2016: PloS One
https://www.readbyqxmd.com/read/27666923/performance-analysis-of-improved-iterated-cubature-kalman-filter-and-its-application-to-gnss-ins
#16
Bingbo Cui, Xiyuan Chen, Yuan Xu, Haoqian Huang, Xiao Liu
In order to improve the accuracy and robustness of GNSS/INS navigation system, an improved iterated cubature Kalman filter (IICKF) is proposed by considering the state-dependent noise and system uncertainty. First, a simplified framework of iterated Gaussian filter is derived by using damped Newton-Raphson algorithm and online noise estimator. Then the effect of state-dependent noise coming from iterated update is analyzed theoretically, and an augmented form of CKF algorithm is applied to improve the estimation accuracy...
January 2017: ISA Transactions
https://www.readbyqxmd.com/read/27472336/fuzzy-adaptive-cubature-kalman-filter-for-integrated-navigation-systems
#17
Chien-Hao Tseng, Sheng-Fuu Lin, Dah-Jing Jwo
This paper presents a sensor fusion method based on the combination of cubature Kalman filter (CKF) and fuzzy logic adaptive system (FLAS) for the integrated navigation systems, such as the GPS/INS (Global Positioning System/inertial navigation system) integration. The third-degree spherical-radial cubature rule applied in the CKF has been employed to avoid the numerically instability in the system model. In processing navigation integration, the performance of nonlinear filter based estimation of the position and velocity states may severely degrade caused by modeling errors due to dynamics uncertainties of the vehicle...
July 26, 2016: Sensors
https://www.readbyqxmd.com/read/27438835/the-joint-adaptive-kalman-filter-jakf-for-vehicle-motion-state-estimation
#18
Siwei Gao, Yanheng Liu, Jian Wang, Weiwen Deng, Heekuck Oh
This paper proposes a multi-sensory Joint Adaptive Kalman Filter (JAKF) through extending innovation-based adaptive estimation (IAE) to estimate the motion state of the moving vehicles ahead. JAKF views Lidar and Radar data as the source of the local filters, which aims to adaptively adjust the measurement noise variance-covariance (V-C) matrix 'R' and the system noise V-C matrix 'Q'. Then, the global filter uses R to calculate the information allocation factor 'β' for data fusion. Finally, the global filter completes optimal data fusion and feeds back to the local filters to improve the measurement accuracy of the local filters...
July 16, 2016: Sensors
https://www.readbyqxmd.com/read/27265063/joint-state-and-parameter-estimation-of-the-hemodynamic-model-by-particle-smoother-expectation-maximization-method
#19
Serdar Aslan, Ali Taylan Cemgil, Ata Akın
OBJECTIVE: In this paper, we aimed for the robust estimation of the parameters and states of the hemodynamic model by using blood oxygen level dependent signal. APPROACH: In the fMRI literature, there are only a few successful methods that are able to make a joint estimation of the states and parameters of the hemodynamic model. In this paper, we implemented a maximum likelihood based method called the particle smoother expectation maximization (PSEM) algorithm for the joint state and parameter estimation...
August 2016: Journal of Neural Engineering
https://www.readbyqxmd.com/read/27171081/feedback-robust-cubature-kalman-filter-for-target-tracking-using-an-angle-sensor
#20
Hao Wu, Shuxin Chen, Binfeng Yang, Kun Chen
The direction of arrival (DOA) tracking problem based on an angle sensor is an important topic in many fields. In this paper, a nonlinear filter named the feedback M-estimation based robust cubature Kalman filter (FMR-CKF) is proposed to deal with measurement outliers from the angle sensor. The filter designs a new equivalent weight function with the Mahalanobis distance to combine the cubature Kalman filter (CKF) with the M-estimation method. Moreover, by embedding a feedback strategy which consists of a splitting and merging procedure, the proper sub-filter (the standard CKF or the robust CKF) can be chosen in each time index...
May 9, 2016: Sensors
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