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https://www.readbyqxmd.com/read/28534272/braf-mutation-is-associated-with-an-improved-survival-in-glioma-a-systematic-review-and-meta-analysis
#1
REVIEW
Huy Gia Vuong, Ahmed M A Altibi, Uyen N P Duong, Hanh T T Ngo, Thong Quang Pham, Kar-Ming Fung, Lewis Hassell
Newly emerged molecular markers in gliomas provide prognostic values beyond the capabilities of histologic classification. BRAF mutation, especially BRAF V600E, is common in a subset of gliomas and may represent a potential prognostic marker. The aim of our study is to investigate the potential use of BRAF mutations on prognosis of glioma patients. Four electronic databases were searched for potential articles, including PubMed, Scopus, ISI Web of Science, and Virtual Health Library (VHL). Data of hazard ratio (HR) for overall survival (OS) and progression-free survival (PFS) were directly obtained from original papers or indirectly estimated from Kaplan Meier curve (KMC)...
May 22, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28520475/kombucha-multimicrobial-community-under-simulated-spaceflight-and-martian-conditions
#2
O Podolich, I Zaets, O Kukharenko, I Orlovska, O Reva, L Khirunenko, M Sosnin, A Haidak, S Shpylova, E Rabbow, M Skoryk, M Kremenskoy, R Demets, N Kozyrovska, J-P de Vera
Kombucha microbial community (KMC) produces a cellulose-based biopolymer of industrial importance and a probiotic beverage. KMC-derived cellulose-based pellicle film is known as a highly adaptive microbial macrocolony-a stratified community of prokaryotes and eukaryotes. In the framework of the multipurpose international astrobiological project "BIOlogy and Mars Experiment (BIOMEX)," which aims to study the vitality of prokaryotic and eukaryotic organisms and the stability of selected biomarkers in low Earth orbit and in a Mars-like environment, a cellulose polymer structural integrity will be assessed as a biomarker and biotechnological nanomaterial...
May 2017: Astrobiology
https://www.readbyqxmd.com/read/28520427/kinetic-monte-carlo-modeling-of-charge-carriers-in-organic-electronic-devices-suppression-of-the-self-interaction-error
#3
Haoyuan Li, Jean-Luc Brédas
Kinetic Monte Carlo (KMC) simulations have emerged as an important tool to help improve the efficiency of organic electronic devices by providing a better understanding of their device physics. In the KMC simulation of an organic device, the reliability of the results depends critically on the accuracy of the chosen charge-transfer rates, which are themselves strongly influenced by the site-energy differences. These site-energy differences include components coming from the electrostatic forces present in the system, which are often evaluated through electric potentials described by the Poisson equation...
May 22, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28472236/kmc-3-counting-and-manipulating-k-mer-statistics
#4
Marek Kokot, Maciej Dlugosz, Sebastian Deorowicz
Summary: Counting all k -mers in a given dataset is a standard procedure in many bioinformatics applications. We introduce KMC3, a significant improvement of the former KMC2 algorithm together with KMC tools for manipulating k -mer databases. Usefulness of the tools is shown on a few real problems. Availability: Program is freely available at http://sun.aei.polsl.pl/REFRESH/kmc . Contact: sebastian.deorowicz@polsl.pl. Supplementary information: Supplementary data are available at Bioinformatics online...
May 4, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28419957/arsenic-in-groundwater-of-the-kolkata-municipal-corporation-kmc-india-critical-review-and-modes-of-mitigation
#5
Dipankar Chakraborti, Bhaskar Das, Mohammad Mahmudur Rahman, Bishwajit Nayak, Arup Pal, Mrinal K Sengupta, Sad Ahamed, Md Amir Hossain, Uttam K Chowdhury, Bhajan Kumar Biswas, Khitish Chandra Saha, R N Dutta
This study represents the first comprehensive report of groundwater arsenic contamination status in the Kolkata Municipal Corporation (KMC). During the past 23 years, 4210 groundwater samples were analysed from all 141 wards in the KMC: 14.2% and 5.2% samples had arsenic >10 μg/l and >50 μg/l, respectively, representing 77 and 37 wards. The study shows that the number of arsenic contaminated samples (and wards) in the southern part of the KMC exceeds that of other parts of the city. The daily intake of arsenic from drinking water was estimated as 0...
April 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28274153/role-of-kangaroo-mother-care-in-growth-and-breast-feeding-rates-in-very-low-birth-weight-vlbw-neonates-a-systematic-review
#6
Deepak Sharma, Nazanin Farahbakhsh, Sweta Sharma, Pradeep Sharma, Akash Sharma
OBJECTIVE: To evaluate the role of kangaroo mother care (KMC) on growth and breast feeding rates in very low birth weight (VLBW) neonates. MATERIALS AND METHODS: A literature search was done to identify eligible studies using various electronic database searches including PubMed and EMBASE, various Web of Science including Scopus, Index Copernicus, African Index Medicus (AIM), Thomson Reuters (ESCI), Chemical Abstracts Service (CAS), SCIWIN (Scientific World Index), Google Scholar, Latin American and Caribbean Health Sciences Information System (LILACS), Index Medicus for the Eastern Mediterranean Region (IMEMR), Index Medicus for the South-East Asian Region (IMSEAR), and Western Pacific Region Index Medicus (WPRIM) and various clinical trial registries...
March 27, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28264615/maternal-perceptions-and-factors-affecting-kangaroo-mother-care-continuum-at-home-a-descriptive-study
#7
R Raajashri, B Adhisivam, B Vishnu Bhat, C Palanivel
OBJECTIVES: To estimate the proportion of mothers who continued to practice Kangaroo mother care (KMC) at home and evaluate potential factors influencing this practice. METHODS: This descriptive study was conducted in a tertiary care teaching hospital in south India. Mothers of preterm and low birth weight infants were trained in KMC during hospital stay. During follow up after 45 days, data regarding their perceptions and the practice of KMC at home and the factors influencing them were collected using questionnaires...
March 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28219937/a-meta-analysis-of-prognostic-roles-of-molecular-markers-in-papillary-thyroid-carcinoma
#8
REVIEW
Huy Gia Vuong, Uyen N P Duong, Ahmed M A Altibi, Hanh T T Ngo, Thong Quang Pham, Hung Minh Tran, Greta Gandolfi, Lewis Hassell
The prognostic role of molecular markers in papillary thyroid carcinoma (PTC) is a matter of ongoing debate. The aim of our study is to investigate the impact of RAS, BRAF, TERT promoter mutations and RET/PTC rearrangements on the prognosis of PTC patients. We performed a search in four electronic databases: PubMed, Scopus, Web of Science and Virtual Health Library (VHL). Data of hazard ratio (HR) and its 95% confidence interval (CI) for disease-specific survival (DSS) and disease-free survival (DFS) were directly obtained from original papers or indirectly estimated from Kaplan-Meier curve (KMC)...
April 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28208965/long-term-outcomes-of-kangaroo-mother-care-in-very-low-birth-weight-infants
#9
Sunil Gavhane, Deepak Eklare, Haseeb Mohammad
INTRODUCTION: Kangaroo Mother Care (KMC) has been gaining acceptance as an effective alternative to incubator based Conventional Medical Care (CMC) in preterm or Low Birth Weight (LBW) infants especially in resource scarce developing countries. AIM: To report and analyse the long-term effects of KMC for relatively stable Very Low Birth Weight (VLBW) infants on nutritional indicators and feeding conditions at 6-12 months of corrected age. MATERIALS AND METHODS: This randomized controlled trial was done at a Level III Neonatal Intensive Care Unit (NICU) of a teaching institution in southern India...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28195719/generalized-temporal-acceleration-scheme-for-kinetic-monte-carlo-simulations-of-surface-catalytic-processes-by-scaling-the-rates-of-fast-reactions
#10
Eric C Dybeck, Craig P Plaisance, Matthew Neurock
A novel algorithm is presented that achieves temporal acceleration during kinetic Monte Carlo (KMC) simulations of surface catalytic processes. This algorithm allows for the direct simulation of reaction networks containing kinetic processes occurring on vastly disparate time scales which computationally overburden standard KMC methods. Previously developed methods for temporal acceleration in KMC were designed for specific systems and often require a priori information from the user such as identifying the fast and slow processes...
March 28, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28152330/randomized-controlled-trial-on-effect-of-intermittent-early-versus-late-kangaroo-mother-care-on-human-milk-feeding-in-low-birth-weight-neonates
#11
Dhaarani Jayaraman, Kanya Mukhopadhyay, Anil Kumar Bhalla, Lakhbir Kaur Dhaliwal
BACKGROUND: Breastfeeding at discharge among sick low-birth-weight (LBW) infants is low despite counseling and intervention like kangaroo mother care (KMC). Research aim: The aim was to study the effects of early initiation of KMC on exclusive human milk feeding, growth, mortality, and morbidities in LBW neonates compared with late initiation of KMC during the hospital stay and postdischarge. METHODS: A randomized controlled trial was conducted in level 2 and 3 areas of a tertiary care neonatal unit over 15 months...
February 1, 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28122592/barriers-and-enablers-of-health-system-adoption-of-kangaroo-mother-care-a-systematic-review-of-caregiver-perspectives
#12
Emily R Smith, Ilana Bergelson, Stacie Constantian, Bina Valsangkar, Grace J Chan
BACKGROUND: Despite improvements in child survival in the past four decades, an estimated 6.3 million children under the age of five die each year, and more than 40% of these deaths occur in the neonatal period. Interventions to reduce neonatal mortality are needed. Kangaroo mother care (KMC) is one such life-saving intervention; however it has not yet been fully integrated into health systems around the world. Utilizing a conceptual framework for integration of targeted health interventions into health systems, we hypothesize that caregivers play a critical role in the adoption, diffusion, and assimilation of KMC...
January 25, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28109232/thermodynamics-and-simulation-of-hard-sphere-fluid-and-solid-kinetic-monte-carlo-method-versus-standard-metropolis-scheme
#13
E A Ustinov
The paper aims at a comparison of techniques based on the kinetic Monte Carlo (kMC) and the conventional Metropolis Monte Carlo (MC) methods as applied to the hard-sphere (HS) fluid and solid. In the case of the kMC, an alternative representation of the chemical potential is explored [E. A. Ustinov and D. D. Do, J. Colloid Interface Sci. 366, 216 (2012)], which does not require any external procedure like the Widom test particle insertion method. A direct evaluation of the chemical potential of the fluid and solid without thermodynamic integration is achieved by molecular simulation in an elongated box with an external potential imposed on the system in order to reduce the particle density in the vicinity of the box ends...
January 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28106154/anisotropic-hydrogen-diffusion-in-%C3%AE-zr-and-zircaloy-predicted-by-accelerated-kinetic-monte-carlo-simulations
#14
Yongfeng Zhang, Chao Jiang, Xianming Bai
This report presents an accelerated kinetic Monte Carlo (KMC) method to compute the diffusivity of hydrogen in hcp metals and alloys, considering both thermally activated hopping and quantum tunneling. The acceleration is achieved by replacing regular KMC jumps in trapping energy basins formed by neighboring tetrahedral interstitial sites, with analytical solutions for basin exiting time and probability. Parameterized by density functional theory (DFT) calculations, the accelerated KMC method is shown to be capable of efficiently calculating hydrogen diffusivity in α-Zr and Zircaloy, without altering the kinetics of long-range diffusion...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28062451/reckoner-read-error-corrector-based-on-kmc
#15
Maciej Dlugosz, Sebastian Deorowicz
Summary: Presence of sequencing errors in data produced by next-generation sequencers affects quality of downstream analyzes. Accuracy of them can be improved by performing error correction of sequencing reads. We introduce a new correction algorithm capable of processing eukaryotic close to 500 Mbp-genome-size, high error-rated data using less than 4 GB of RAM in about 35 min on 16-core computer. Availability and Implementation: Program is freely available at http://sun...
April 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28047210/th-ab-bra-07-penelope-based-gpu-accelerated-dose-calculation-system-applied-to-mri-guided-radiation-therapy
#16
Y Wang, T Mazur, O Green, Y Hu, H Li, V Rodriguez, H Wooten, D Yang, T Zhao, S Mutic, H Li
PURPOSE: The clinical commissioning of IMRT subject to a magnetic field is challenging. The purpose of this work is to develop a GPU-accelerated Monte Carlo dose calculation platform based on PENELOPE and then use the platform to validate a vendor-provided MRIdian head model toward quality assurance of clinical IMRT treatment plans subject to a 0.35 T magnetic field. METHODS: We first translated PENELOPE from FORTRAN to C++ and validated that the translation produced equivalent results...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28017865/a-multi-scale-method-for-modeling-degradation-of-bioresorbable-polyesters
#17
Taohong Zhang, Shaonan Zhou, Xiaohao Gao, Zhiyong Yang, Leran Sun, Dezheng Zhang
A multi-scale model using the cellular automata (CA) and kinetic Monte Carlo (KMC) methods is presented to simulate the degradation process of bioresorbable polyesters such as polylactide (PLA), polyglycolide (PGA) and their copolymers. The model considers the underlying chemical and physical events such as polymer chain scission, oligomer production, crystallization induced by polymer chain scissions, oligomer diffusion and microstructure evolution due to erosion of the small chains. A macroscopic device is discretized into an array of mesoscopic cells...
December 23, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/28009335/influence-of-maternal-factors-on%C3%A2-the%C3%A2-successful-outcome-of-kangaroo-mother-care-in-low-birth-weight-infants-a%C3%A2-randomized-controlled-trial
#18
S N Lumbanraja
BACKGROUND: Kangaroo mother care (KMC) is associated with positive neonatal outcomes. Studies demonstrated significant influence of maternal factors on the success of applying KMC. AIM: To determine maternal factors that influence on anthropometric parameters in low birth weight babies that received kangaroo mother care. METHODS: This is a randomized controlled study that involved low birth weight newborns. We randomly assigned newborns into two groups; a group who received KMC and a group who received conventional care...
2016: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/27989952/economic-evaluation-of-kangaroo-mother-care-cost-utility-analysis-of-results-from-a-randomized-controlled-trial-conducted-in-bogot%C3%A3
#19
Juan Gabriel Ruiz, Nathalie Charpak, Mario Castillo, Astrid Bernal, John Ríos, Tammy Trujillo, María Adelaida Córdoba
BACKGROUND AND OBJECTIVE: Although kangaroo mother care (KMC) has been shown to be safe and effective in randomized controlled trials (RCTs), there are no published complete economic evaluations including the three components of the full intervention. METHODS: A cost utility analysis performed on the results of an RCT conducted in Bogotá, Colombia between 1993 and 1996. Hospital and ambulatory costs were estimated by microcosting in a sample of preterm infants from a University Hospital in Bogotá in 2011 and at a KMC clinic in the same period...
October 28, 2016: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/27987366/when-alternative-female-kangaroo-care-is-provided-by-other-immediate-postpartum-mothers-it-reduces-postprocedural-pain-in-preterm-babies-more-than-swaddling
#20
Jitendranath Murmu, Kannan Venkatnarayan, Rajeev Kumar Thapar, Subhash Chandra Shaw, Shamsher Singh Dalal
AIM: Research on alternative female Kangaroo care (KC) has been hampered by high maternal refusal rates. We assessed the efficacy of Kangaroo mother care (KMC), alternative KC provided by other postpartum mothers and swaddling for postprocedural pain relief in preterm babies. METHODS: The study was carried out in a tertiary armed forces hospital, where mothers did not have support from other female relatives and other postpartum mothers agreed to act as alternative female KC providers...
December 17, 2016: Acta Paediatrica
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