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https://www.readbyqxmd.com/read/29782141/in-situ-assembly-of-well-dispersed-ag-nanoparticles-throughout-electrospun-alginate-nanofibers-for-monitoring-human-breath-smart-fabrics
#1
Jun Zhang, Xiao-Xiong Wang, Bin Zhang, Seeram Ramakrishna, Miao Yu, Jian-Wei Ma, Yun-Ze Long
Alginate nanofibers assembled with sliver nanoparticles throughout the whole nanofiber were fabricated by three steps including electrospinning of Na-alginate nanofibers, ion exchange between the sodium and silver ions, and in situ reduction of silver nanoparticles. The content, distribution and size of the nanoparticles are controllable by tuning reaction conditions. Ag/alginate nanofibers exhibit good humidity sensitivity in a wide humidity range from ambient RH (20%) to 85% RH. Interestingly, these humidity sensors can be attached to a 3M-9001V mask for monitoring human breath during exercise and emotion changes, and this smart exhibits accurate and continuous human-breath tracking no matter how fast or slow as well as how deep or shallow...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29779947/intermittent-pili-mediated-forces-fluidize-neisseria-meningitidis-aggregates-promoting-vascular-colonization
#2
Daria Bonazzi, Valentina Lo Schiavo, Silke Machata, Ilyas Djafer-Cherif, Pierre Nivoit, Valeria Manriquez, Hirokazu Tanimoto, Julien Husson, Nelly Henry, Hugues Chaté, Raphael Voituriez, Guillaume Duménil
Neisseria meningitidis, a bacterium responsible for meningitis and septicemia, proliferates and eventually fills the lumen of blood capillaries with multicellular aggregates. The impact of this aggregation process and its specific properties are unknown. We first show that aggregative properties are necessary for efficient infection and study their underlying physical mechanisms. Micropipette aspiration and single-cell tracking unravel unique features of an atypical fluidized phase, with single-cell diffusion exceeding that of isolated cells...
May 15, 2018: Cell
https://www.readbyqxmd.com/read/29771931/early-and-late-indications-of-item-specific-control-in-a-stroop-mouse-tracking-study
#3
Carsten Bundt, Marit F L Ruitenberg, Elger L Abrahamse, Wim Notebaert
Previous studies indicated that cognitive conflict continues to bias actions even after a movement has been initiated. The present paper examined whether cognitive control also biases actions after movement initiation. To this end, we had participants perform a Stroop task in which we manipulated the item-specific proportion of (in)congruent trials (80% congruent vs. 20% congruent). Importantly, participants responded via mouse movements, allowing us to evaluate various movement parameters: initiation times, movement times, and movement accuracy...
2018: PloS One
https://www.readbyqxmd.com/read/29771675/action-driven-visual-object-tracking-with-deep-reinforcement-learning
#4
Sangdoo Yun, Jongwon Choi, Youngjoon Yoo, Kimin Yun, Jin Young Choi
In this paper, we propose an efficient visual tracker, which directly captures a bounding box containing the target object in a video by means of sequential actions learned using deep neural networks. The proposed deep neural network to control tracking actions is pretrained using various training video sequences and fine-tuned during actual tracking for online adaptation to a change of target and background. The pretraining is done by utilizing deep reinforcement learning (RL) as well as supervised learning...
June 2018: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/29769736/trna-tracking-for-direct-measurements-of-protein-synthesis-kinetics-in-live-cells
#5
Ivan L Volkov, Martin Lindén, Javier Aguirre Rivera, Ka-Weng Ieong, Mikhail Metelev, Johan Elf, Magnus Johansson
Our ability to directly relate results from test-tube biochemical experiments to the kinetics in living cells is very limited. Here we present experimental and analytical tools to directly study the kinetics of fast biochemical reactions in live cells. Dye-labeled molecules are electroporated into bacterial cells and tracked using super-resolved single-molecule microscopy. Trajectories are analyzed by machine-learning algorithms to directly monitor transitions between bound and free states. In particular, we measure the dwell time of tRNAs on ribosomes, and hence achieve direct measurements of translation rates inside living cells at codon resolution...
May 16, 2018: Nature Chemical Biology
https://www.readbyqxmd.com/read/29767312/-fast-track-protocols-in-esophageal-surgery-what-is-possible
#6
W Schröder, C J Bruns
No abstract text is available yet for this article.
May 16, 2018: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29763816/design-of-a-phase-3-trial-of-intracoronary-administration-of-human-adenovirus-5-encoding-human-adenylyl-cyclase-type-6-rt-100-gene-transfer-in-patients-with-heart-failure-with-reduced-left-ventricular-ejection-fraction-the-flourish-clinical-trial
#7
William F Penny, Timothy D Henry, Matthew W Watkins, Amit N Patel, H Kirk Hammond
The prognosis of patients with HFrEF remains poor despite the use of current medical and device therapies. Preclinical studies of HFrEF using IC delivery of RT-100, a replication deficient, E1/E3-deleted human adenovirus 5 encoding human AC6 was associated with favorable effects on LV function and remodeling. A recent multicenter, double-blind, placebo-controlled, phase 2 study demonstrated the safety of IC delivery of RT-100 in HFrEF patients and potential efficacy at the higher doses. This phase 2 dose finding study, which included doses not expected to be effective, identified a potential reduction in congestive heart failure admissions in the AC6-treated group one year after randomization...
April 6, 2018: American Heart Journal
https://www.readbyqxmd.com/read/29761788/block-based-robust-control-of-stepping-using-intraspinal-microstimulation
#8
Ehsan Rouhani, Abbas Erfanian
OBJECTIVE: The problem of motor control using intraspinal microstimulation (ISMS) can be approached at two levels of the motor system: individual muscles (motor pools) and motor primitives. The major challenges of direct ISMS at the level of individual muscle are the number of electrodes that are required to be implanted in order to recruit all muscles involving the motion and the muscle selectivity. One solution to cope with these problems is the control of movement generated by appropriate combination of the movement primitives...
May 15, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29757363/targeting-endothelial-ligands-icam-1-alicaforsen-madcam-1
#9
Walter Reinisch, Kenneth Hung, Mina Hassan-Zahraee, Fabio Cataldi
The specific blockade of the endothelial ligands intercellular adhesion molecule-1 (ICAM-1) and mucosal addressin cell adhesion molecule (MAdCAM) involved in leukocyte recruitment to the site of inflammation as therapeutic targets in inflammatory bowel disease (IBD) has been recognized from their overexpression in the inflamed mucosa and their successful intervention in preclinical animal models. Interventions to target ICAM-1 in human IBD are confined to the ICAM-1 anti-sense oligonucleotide alicaforsen. Whereas results with parenteral formulations of alicaforsen in Crohn's disease were largely negative, efficacy signals derived from studies with an enema formulation in ulcerative and pouchitis are promising and having lead to a FDA Fast-Track designation for the latter...
May 11, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29752393/cardiac-structural-remodeling-longitudinal-systolic-strain-and-torsional-mechanics-in-lean-and-nonlean-dysglycemic-chinese-adults
#10
Jiun-Lu Lin, Kuo-Tzu Sung, Cheng-Huang Su, Tzu-Hsun Chou, Chi-In Lo, Jui-Peng Tsai, Shun-Chuan Chang, Yau-Huei Lai, Kuang-Chun Hu, Chia-Yuan Liu, Chun-Ho Yun, Chung-Lieh Hung, Hung-I Yeh, Carolyn S P Lam
BACKGROUND: Diabetes mellitus and pre-diabetes mellitus are associated with lower body mass indices and increased risk of cardiovascular events (including heart failure) at lower glucose thresholds in Chinese compared with Western cohorts. However, the extent of cardiac remodeling and regulation on cardiac mechanics in lean and nonlean dysglycemic Chinese adults is understudied. METHODS AND RESULTS: We studied 3950 asymptomatic Chinese (aged 49.7±10.7 years; 65% male; body mass index: 24...
May 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29752273/differential-production-of-psl-in-planktonic-cells-leads-to-two-distinctive-attaching-phenotypes-in-pseudomonas-aeruginosa
#11
Shuai Yang, Xinyi Cheng, Zhenyu Jin, Aiguo Xia, Lei Ni, Rongrong Zhang, Fan Jin
Exponentially growing bacteria in a well-mixed planktonic culture are generally assumed to be physiologically and phenotypically uniform, and distinct from their genetically identical counterparts living in biofilms. Using a combination of high spatiotemporal microscopy and a bacterial tracking algorithm, in this study, we showed that the planktonic cells of Pseudomonas aeruginosa differently attach to surfaces even when they remained in the exponential phase. We consistently observed that fast- and slow-attaching phenotypes coexist in planktonic cells, regardless of their growth phase...
May 11, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29751798/clinic-flow-for-sti-hiv-and-tb-patients-in-an-urban-infectious-disease-clinic-offering-point-of-care-testing-services-in-durban-south-africa
#12
Katrina J Stime, Nigel Garrett, Yukteshwar Sookrajh, Jienchi Dorward, Ntuthu Dlamini, Ayo Olowolagba, Monisha Sharma, Ruanne V Barnabas, Paul K Drain
BACKGROUND: Many clinics in Southern Africa have long waiting times. The implementation of point-of-care (POC) tests to accelerate diagnosis and improve clinical management in resource-limited settings may improve or worsen clinic flow and waiting times. The objective of this study was to describe clinic flow with special emphasis on the impact of POC testing at a large urban public healthcare clinic in Durban, South Africa. METHODS: We used time and motion methods to directly observe patients and practitioners...
May 11, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29751212/sustainable-vaccine-development-a-vaccine-manufacturer-s-perspective
#13
REVIEW
Rino Rappuoli, Emmanuel Hanon
Vaccination remains the most cost-effective public health intervention after clean water, and the benefits impressively outweigh the costs. The efforts needed to fulfill the steadily growing demands for next-generation and novel vaccines designed for emerging pathogens and new indications are only realizable in a sustainable business model. Vaccine development can be fast-tracked through strengthening international collaborations, and the continuous innovation of technologies to accelerate their design, development, and manufacturing...
May 8, 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29750113/real-time-eye-tracking-for-the-assessment-of-driver-fatigue
#14
Junli Xu, Jianliang Min, Jianfeng Hu
Eye-tracking is an important approach to collect evidence regarding some participants' driving fatigue. In this contribution, the authors present a non-intrusive system for evaluating driver fatigue by tracking eye movement behaviours. A real-time eye-tracker was used to monitor participants' eye state for collecting eye-movement data. These data are useful to get insights into assessing participants' fatigue state during monotonous driving. Ten healthy subjects performed continuous simulated driving for 1-2 h with eye state monitoring on a driving simulator in this study, and these measured features of the fixation time and the pupil area were recorded via using eye movement tracking device...
April 2018: Healthcare Technology Letters
https://www.readbyqxmd.com/read/29748648/high-yield-in-vitro-recordings-from-neurons-functionally-characterized-in-vivo
#15
Simon Weiler, Joel Bauer, Mark Hübener, Tobias Bonhoeffer, Tobias Rose, Volker Scheuss
In vivo two-photon calcium imaging provides detailed information about the activity and response properties of individual neurons. However, in vitro methods are often required to study the underlying neuronal connectivity and physiology at the cellular and synaptic levels at high resolution. This protocol provides a fast and reliable workflow for combining the two approaches by characterizing the response properties of individual neurons in mice in vivo using genetically encoded calcium indicators (GECIs), followed by retrieval of the same neurons in brain slices for further analysis in vitro (e...
June 2018: Nature Protocols
https://www.readbyqxmd.com/read/29747154/a-probabilistic-approach-to-joint-cell-tracking-and-segmentation-in-high-throughput-microscopy-videos
#16
Assaf Arbelle, Jose Reyes, Jia-Yun Chen, Galit Lahav, Tammy Riklin Raviv
We present a novel computational framework for the analysis of high-throughput microscopy videos of living cells. The proposed framework is generally useful and can be applied to different datasets acquired in a variety of laboratory settings. This is accomplished by tying together two fundamental aspects of cell lineage construction, namely cell segmentation and tracking, via a Bayesian inference of dynamic models. In contrast to most existing approaches, which aim to be general, no assumption of cell shape is made...
April 22, 2018: Medical Image Analysis
https://www.readbyqxmd.com/read/29746482/implementation-of-a-voluntary-deep-inspiration-breath-hold-technique-vdibh-using-brainlab-exactrac-infrared-optical-tracking-system
#17
Edy Ippolito, Michele Fiore, Alessia Di Donato, Sonia Silipigni, Carla Rinaldi, Patrizia Cornacchione, Erminia Infusino, Cristina Di Venanzio, Carlo Greco, Lucio Trodella, Sara Ramella, Rolando Maria D'Angelillo
BACKGROUND: Voluntary deep inspiration breath hold technique (vDIBH) is considered as the key to achieving the widest cardiac sparing in whole breast irradiation. Several techniques have been implemented to achieve a reproducible, fast and friendly treatment. The aim of the present study is to implement vDIBH using the ExacTrac (BrainLAB AG, Germany) monitoring system. METHODS: Women with left-sided breast cancer, younger than 50 years or with cardiac disease, underwent whole breast RT with vDIBH using the ExacTrac (BrainLAB AG, Germany) monitoring system...
2018: PloS One
https://www.readbyqxmd.com/read/29745794/visceral-adipose-tissue-tracks-more-closely-with-metabolic-dysfunction-than-intrahepatic-triglyceride-in-non-diabetic-lean-asians
#18
Cherlyn Ding, Zhiling Chan, Yu Chung Chooi, John Choo, Suresh Anand Sadananthan, Navin Michael, S Sendhil Velan, Melvin Khee-Shing Leow, Faidon Magkos
BACKGROUND: Increased visceral adipose tissue (VAT) and intrahepatic triglyceride (IHTG) are important risk factors for the development of type 2 diabetes in obese subjects. The relative contribution of these ectopic fat depots to cardiometabolic risk differs between populations, depends on the degree of obesity and the level of cardiorespiratory fitness, and is difficult to dissect because VAT and IHTG typically co-vary. The aim of this study was to evaluate the effect of an isolated increase in VAT or IHTG on insulin sensitivity and insulin secretion in apparently healthy normal-weight Asian subjects...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29745349/automated-moth-flight-analysis-in-the-vicinity-of-artificial-light
#19
P Gaydecki
Instrumentation and software for the automated analysis of insect flight trajectories is described, intended for quantifying the behavioural dynamics of moths in the vicinity of artificial light. For its time, this moth imaging system was relatively advanced and revealed hitherto undocumented insights into moth flight behaviour. The illumination source comprised a 125 W mercury vapour light, operating in the visible and near ultraviolet wavelengths, mounted on top of a mobile telescopic mast at heights of 5 and 7...
May 10, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29745009/a-fast-jaw-tracking-model-for-vmat-and-imrt-monte-carlo-simulations
#20
Reid Townson, Hilary Egglestone, Sergei Zavgorodni
Modern radiotherapy techniques involve routine use of volumetric arc therapy (VMAT) and intensity modulated radiotherapy (IMRT) with jaw-tracking - dynamic motion of the secondary collimators (jaws) in tandem with multi-leaf collimators (MLCs). These modalities require accurate dose calculations for the purposes of treatment planning and dose verification. Monte Carlo (MC) methods for radiotherapy dose calculation are widely accepted as capable of achieving high accuracy. This paper presents an efficiency-enhancement method for secondary collimator modeling, presented in the context of a tool for MC-based dose second checks...
May 9, 2018: Journal of Applied Clinical Medical Physics
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