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https://www.readbyqxmd.com/read/28335534/a-networked-sensor-system-for-the-analysis-of-plot-scale-hydrology
#1
German Villalba, Fernando Plaza, Xiaoyang Zhong, Tyler W Davis, Miguel Navarro, Yimei Li, Thomas A Slater, Yao Liang, Xu Liang
This study presents the latest updates to the Audubon Society of Western Pennsylvania (ASWP) testbed, a $50,000 USD, 104-node outdoor multi-hop wireless sensor network (WSN). The network collects environmental data from over 240 sensors, including the EC-5, MPS-1 and MPS-2 soil moisture and soil water potential sensors and self-made sap flow sensors, across a heterogeneous deployment comprised of MICAz, IRIS and TelosB wireless motes. A low-cost sensor board and software driver was developed for communicating with the analog and digital sensors...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28332050/rapidly-directional-biotransformation-of-tauroursodeoxycholic-acid-through-engineered-escherichia-coli
#2
Jie Shi, Jie Wang, Lu Yu, Li Yang, Shujuan Zhao, Zhengtao Wang
Bear bile powder is a precious medicinal material. It is characterized by high content of tauroursodeoxycholic acid (TUDCA) at a ratio of 1.0-1.5 to taurochenodeoxycholic acid (TCDCA). Here, we reported the biotransformation of tauroursodeoxycholic acid (TUDCA) through Escherichia coli engineered with a two-step mimic biosynthetic pathway of TUDCA from taurochenodeoxycholic acid (TCDCA). Two 7α-hydroxysteroid dehydrogenase (7α-HSDH) and two 7β-hydroxysteroid dehydrogenase (7β-HSDH) genes (named as α1, α2, β1, and β2) were selected and synthesized to create four pathway variants using ePathBrick...
March 22, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28330961/reference-values-for-developing-responsive-functional-outcome-measures-across-the-lifespan
#3
Marnee J McKay, Jennifer N Baldwin, Paulo Ferreira, Milena Simic, Natalie Vanicek, Joshua Burns
OBJECTIVE: To generate a reference dataset of commonly performed functional outcome measures in 1,000 children and adults and investigate the influence of demographic, anthropometric, strength, and flexibility characteristics. METHODS: Twelve functional outcome measures were collected from 1,000 healthy individuals aged 3-101 years: 6-minute walk test, 30-second chair stand test, timed stairs test, long jump, vertical jump, choice stepping reaction time, balance (Star Excursion Balance Test, tandem stance eyes open and closed, single-leg stance eyes closed), and dexterity (9-hole peg test, Functional Dexterity Test)...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28330471/robot-assisted-gait-training-lokomat-improves-walking-function-and-activity-in-people-with-spinal-cord-injury-a-systematic-review
#4
REVIEW
Ki Yeun Nam, Hyun Jung Kim, Bum Sun Kwon, Jin-Woo Park, Ho Jun Lee, Aeri Yoo
Robot-assisted gait training (RAGT) after spinal cord injury (SCI) induces several different neurophysiological mechanisms to restore walking ability, including the activation of central pattern generators, task-specific stepping practice and massed exercise. However, there is no clear evidence for the optimal timing and efficacy of RAGT in people with SCI. The aim of our study was to assess the effects of RAGT on improvement in walking-related functional outcomes in patients with incomplete SCI compared with other rehabilitation modalities according to time elapsed since injury...
March 23, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28326712/-strategy-and-practice-of-the-healthy-cosmetic-management-for-patients-with-high-dental-caries-susceptibility
#5
Liu Tao, Cheng Li, Yang Hui, Wang Huning, Fang Hongzhi, Hu Tao
A new clinic conception, healthy cosmetic management (HCM), was innovated introduced into diagnose and treatment of patients with high caries risk. The priority of HCM should be given to aesthetic restoration of teeth, taking consideration of the conserving of tissue and pulp of teeth and the balance between health and aesthetics, which may reach to the goal of the individual clinic treatment. HCM includes five steps: 1) caries risk assessment; 2) detection of initial caries; 3) digital aesthetic design; 4) minimally invasive therapy; 5) behavior management of caries and doctor-patient communication pattern...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28325010/step-length-and-width-variability-while-walking-on-a-motion-simulator-mounted-treadmill
#6
Timothy Boerger, Jacob Van Dehy, Tanya Onushko, Brian Schmit, Allison Hyngstrom
While devices which allow scientists to perturb normal walking are becoming increasingly common, postural adaptations to these perturbations have not been fully quantified. One way to quantify postural responses to perturbations are through the assessment of variability of step length and width. In the present study we determined variability of both step length and width while subjects walked under perturbations of varying amplitude in roll, pitch, yaw, anteroposterior, lateral, and combined roll, pitch, yaw directions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322559/identification-of-novel-inhibitors-of-leishmania-donovani-%C3%AE-glutamylcysteine-synthetase-using-structure-based-virtual-screening-docking-molecular-dynamics-simulation-and-in-vitro-studies
#7
Pragati Agnihotri, Arjun Kumar Mishra, Shikha Mishra, Vijay Kumar Sirohi, Amogh A Sahasrabuddhe, J Venkatesh Pratap
Trypansomatids maintain their redox balance by the trypanothione based redox system, enzymes of which exhibit differences from mammalian homologues. γ-glutamylcysteine synthetase (Gcs) is an essential enzyme of this pathway performing the first and rate limiting step. L-buthionine-S,R-sulfoximine (BSO), a specific inhibitor of Gcs induces toxicity in hosts infected with T. brucei underlining for novel Gcs inhibitors. The present study reports identification of Ld Gcs inhibitors using computational approaches and their experimental validation...
March 21, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28315835/prophage-provide-a-safe-haven-for-adaptive-exploration-in-temperate-viruses
#8
Lindi M Wahl, Tyler Pattenden
Prophage sequences constitute a substantial fraction of the temperate virus gene pool. Although subject to mutational decay, prophage sequences can also be an important source of adaptive mutations for these viral populations. Here we develop a life-history model for temperate viruses, including both the virulent (lytic) and the temperate phases of the life cycle. We then examine the survival of mutations that increase fitness during the lytic phase (attachment rate, burst size), increase fitness in the temperate phase (increasing host survival), or affect transitions between the two phases (integration or induction probability)...
March 17, 2017: Genetics
https://www.readbyqxmd.com/read/28314612/a-simple-imagej-macro-tool-for-analyzing-mitochondrial-network-morphology-in-mammalian-cell-culture
#9
Andrew J Valente, Lucas A Maddalena, Ellen L Robb, Fereshteh Moradi, Jeffrey A Stuart
Mitochondria exist in a dynamic cycle of fusion and fission whose balance directly influences the morphology of the 'mitochondrial network', a term that encompasses the branched, reticular structure of fused mitochondria as well as the separate, punctate individual organelles within a eukaryotic cell. Over the past decade, the significance of the mitochondrial network has been increasingly appreciated, motivating the development of various approaches to analyze it. Here, we describe the Mitochondrial Network Analysis (MiNA) toolset, a relatively simple pair of macros making use of existing ImageJ plug-ins, allowing for semi-automated analysis of mitochondrial networks in cultured mammalian cells...
March 14, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28306736/identifying-predictive-motor-factors-for-falls-in-post-menopausal-breast-cancer-survivors
#10
Marek Zak, Malgorzata Biskup, Pawel Macek, Halina Krol, Szymon Krupnik, Anna Opuchlik
OBJECTIVE: Breast cancer treatment, including radical surgery, is also pursued as late as the 7th - 8th decade of women's lives. Standard physical rehabilitation procedures offered to those women are predominantly focused on attenuating specific functional deficits of the upper limb and trunk. Seldom do they entail any regimens specifically aimed at recovering overall functionality, and reducing exposure to falls-risk. The study aimed to assess potential interrelationships between the self-reported falls, individual functional capabilities and appreciably reducing exposure to falls-risk in a group of post-menopausal, post-surgical breast cancer survivors...
2017: PloS One
https://www.readbyqxmd.com/read/28306154/protein-intake-and-mobility-limitation-in-community-dwelling-older-adults-the-health-abc-study
#11
Denise K Houston, Janet A Tooze, Katelyn Garcia, Marjolein Visser, Susan Rubin, Tamara B Harris, Anne B Newman, Stephen B Kritchevsky
OBJECTIVES: The current Recommended Dietary Allowance (RDA) for protein is based on short-term nitrogen balance studies in young adults and may underestimate the amount needed to optimally preserve physical function in older adults. We examined the association between protein intake and the onset of mobility limitation over 6 years of follow-up in older adults in the Health ABC study. DESIGN: Prospective cohort study. SETTING: Memphis, Tennessee and Pittsburgh, Pennsylvania...
March 17, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28301391/comparison-of-multipole-stimulus-configurations-with-respect-to-loudness-and-spread-of-excitation
#12
Dirk Vellinga, Jeroen Johannes Briaire, David Michael Paul van Meenen, Johannes Hubertus Maria Frijns
OBJECTIVE: Current spread is a substantial limitation of speech coding strategies in cochlear implants. Multipoles have the potential to reduce current spread and thus generate more discriminable pitch percepts. The difficulty with multipoles is reaching sufficient loudness. The primary goal was to compare the loudness characteristics and spread of excitation (SOE) of three types of phased array stimulation, a novel multipole, with three more conventional configurations. DESIGN: Fifteen postlingually deafened cochlear implant users performed psychophysical experiments addressing SOE, loudness scaling, loudness threshold, loudness balancing, and loudness discrimination...
March 15, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28298234/dynamic-regulation-of-fatty-acid-pools-for-improved-production-of-fatty-alcohols-in-saccharomyces-cerevisiae
#13
Paulo Gonçalves Teixeira, Raphael Ferreira, Yongjin J Zhou, Verena Siewers, Jens Nielsen
BACKGROUND: In vivo production of fatty acid-derived chemicals in Saccharomyces cerevisiae requires strategies to increase the intracellular supply of either acyl-CoA or free fatty acids (FFAs), since their cytosolic concentrations are quite low in a natural state for this organism. Deletion of the fatty acyl-CoA synthetase genes FAA1 and FAA4 is an effective and straightforward way to disable re-activation of fatty acids and drastically increase FFA levels. However, this strategy causes FFA over-accumulation and consequential release to the extracellular medium, which results in a significant loss of precursors that compromises the process yield...
March 15, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28296958/interaction-between-the-oculomotor-and-postural-systems-during-a-dual-task-compensatory-reductions-in-head-sway-following-visually-induced-postural-perturbations-promote-the-production-of-accurate-double-step-saccades-in-standing-human-adults
#14
Mathieu Boulanger, Guillaume Giraudet, Jocelyn Faubert
Humans routinely scan their environment for useful information using saccadic eye movements and/or coordinated movements of the eyes and other body segments such the head and the torso. Most previous eye movement studies were conducted with seated subject and showed that single saccades and sequences of saccades (e.g. double-step saccades) made to briefly flashed stimuli were equally accurate and precise. As one can easily appreciate, most gaze shifts performed daily by a given person are not produced from a seated position, but rather from a standing position either as subjects perform an action from an upright stance or as they walk from one place to another...
2017: PloS One
https://www.readbyqxmd.com/read/28295945/parallel-evolution-of-genes-controlling-mitonuclear-balance-in-short-lived-annual-fishes
#15
Arne Sahm, Martin Bens, Matthias Platzer, Alessandro Cellerino
The current molecular understanding of the aging process derives almost exclusively from the study of random or targeted single-gene mutations in highly inbred laboratory species, mostly invertebrates. Little information is available as to the genetic mechanisms responsible for natural lifespan variation and the evolution of lifespan, especially in vertebrates. Here, we investigated the pattern of positive selection in annual (i.e., short-lived) and nonannual (i.e., longer-lived) African killifishes to identify a genomic substrate for evolution of annual life history (and reduced lifespan)...
March 11, 2017: Aging Cell
https://www.readbyqxmd.com/read/28293275/approximating-the-dcj-distance-of-balanced-genomes-in-linear-time
#16
Diego P Rubert, Pedro Feijão, Marília Dias Vieira Braga, Jens Stoye, Fábio Henrique Viduani Martinez
BACKGROUND: Rearrangements are large-scale mutations in genomes, responsible for complex changes and structural variations. Most rearrangements that modify the organization of a genome can be represented by the double cut and join (DCJ) operation. Given two balanced genomes, i.e., two genomes that have exactly the same number of occurrences of each gene in each genome, we are interested in the problem of computing the rearrangement distance between them, i.e., finding the minimum number of DCJ operations that transform one genome into the other...
2017: Algorithms for Molecular Biology: AMB
https://www.readbyqxmd.com/read/28291464/expanding-clinical-assessment-for-traumatic-brain-injury-and-comorbid-post-traumatic-stress-disorder-a-retrospective-analysis-of-virtual-environment-tasks-in-the-computer-assisted-rehabilitation-environment
#17
Marie M Onakomaiya, Sarah E Kruger, Krista B Highland, Paula N Kodosky, Marcy M Pape, Michael J Roy
The objective of this study was to determine whether physical performance during virtual environment (VE) tasks in the Computer-Assisted Rehabilitation Environment (CAREN) could differentiate between service members (SMs) with a history of traumatic brain injury (TBI) with and without comorbid post-traumatic stress disorder (PTSD). Data were obtained by independent review of clinical notes, objective outcomes, and validated questionnaires from 214 SMs (208 males) with a history of TBI assessed in the CAREN from 2010 to 2015...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28290995/uses-of-polypills-for-cardiovascular-disease-and-evidence-to-date
#18
REVIEW
Mark D Huffman, Denis Xavier, Pablo Perel
Polypills have been approved in more than 30 countries, but worldwide experience with and availability of polypills remain limited, unlike fixed-dose combinations in other diseases such as HIV, tuberculosis, and malaria. In this Series review, we aim to propose a guide for the use of polypills in future research and clinical activities and to synthesise contemporary evidence supporting the use of polypills for prevention of atherosclerosis. Polypill uses can be categorised by population and indication, both of which influence the balance between benefits and risks...
March 11, 2017: Lancet
https://www.readbyqxmd.com/read/28290192/further-construct-validity-of-the-timed-up-and-go-test-as-a-measure-of-ambulation-in-persons-with-multiple-sclerosis
#19
Alon Kalron, Mark Dolev, Uri Givon
BACKGROUND: The importance of mobility impairments in people with multiple sclerosis (PwMS) denotes a need for valid, reliable, sensitive and feasible clinical measuring tools. The Timed Up and Go (TUG) test is a unique mobility measure as it captures other functions apart from walking, ie, rising out of a chair or turning around an object. AIM: To expand the construct validity of the TUG test in PwMS and determine the ability of the TUG score to discriminate between four levels of disability between fallers, recurrent fallers and non-fallers...
March 13, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28288418/-click-analytics-for-click-chemistry-a-simple-method-for-calibration-free-evaluation-of-online-nmr-spectra
#20
Aleksandra Michalik-Onichimowska, Simon Kern, Jens Riedel, Ulrich Panne, Rudibert King, Michael Maiwald
Driven mostly by the search for chemical syntheses under biocompatible conditions, so called "click" chemistry rapidly became a growing field of research. The resulting simple one-pot reactions are so far only scarcely accompanied by an adequate optimization via comparably straightforward and robust analysis techniques possessing short set-up times. Here, we report on a fast and reliable calibration-free online NMR monitoring approach for technical mixtures. It combines a versatile fluidic system, continuous-flow measurement of (1)H spectra with a time interval of 20s per spectrum, and a robust, fully automated algorithm to interpret the obtained data...
March 1, 2017: Journal of Magnetic Resonance
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