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https://www.readbyqxmd.com/read/29345774/rewiring-chemical-networks-based-on-dynamic-dithioacetal-and-disulfide-bonds
#1
Gaston Orrillo, Agustina La-Venia, Escalante Andrea, Ricardo L E Furlan
The control of the connectivity between nodes of synthetic networks is still largely unexplored. To address this point we take advantage of a simple dynamic chemical system with two exchange levels that are mutually connected and can be activated simultaneously or sequentially. Dithioacetals and disulfides can be exchanged simultaneously under UV light in the presence of a sensitizer. Crossover reactions between both exchange processes produce a fully connected chemical network. On the other hand, the use of acid, base or UV light connects different nodes allowing network rewiring...
January 18, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29339614/application-of-image-processing-on-struvite-recovery-from-swine-wastewater-by-using-the-fluidized-bed
#2
Zhi-Long Ye, Yujun Deng, Xin Ye, Yaoyin Lou, Shaohua Chen
Fluidized granulation is one of the common methods used in wastewater treatment and resource recovery with harvesting millimeter-scale large particles. Presently, effective methods are lacking to measure the fluidized granules ranging from micro- to millimeter scales, with the consequence of ineffectively controlling and optimizing the granulation process. In this work, recovering struvite (MgNH4PO4·6H2O) from swine wastewater by using a fluidized bed was taken as an example. Image processing was applied to analyze the properties of different types of struvite granules, including morphology, particle size distribution, number density and mass concentration...
January 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29327161/effects-of-channel-blocking-on-information-transmission-and-energy-efficiency-in-squid-giant-axons
#3
Yujiang Liu, Yuan Yue, Yuguo Yu, Liwei Liu, Lianchun Yu
Action potentials are the information carriers of neural systems. The generation of action potentials involves the cooperative opening and closing of sodium and potassium channels. This process is metabolically expensive because the ions flowing through open channels need to be restored to maintain concentration gradients of these ions. Toxins like tetraethylammonium can block working ion channels, thus affecting the function and energy cost of neurons. In this paper, by computer simulation of the Hodgkin-Huxley neuron model, we studied the effects of channel blocking with toxins on the information transmission and energy efficiency in squid giant axons...
January 11, 2018: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/29326005/an-anaerobic-aerobic-sequential-batch-process-with-simultaneous-methanogenesis-and-short-cut-denitrification-for-the-treatment-of-marine-biofoulings
#4
S Akizuki, T Toda
Although combination of denitritation and methanogenesis for wastewater treatment has been widely investigated, an application of this technology to solid waste treatment has been rarely studied. This study investigated an anaerobic-aerobic batch system with simultaneous denitritation-methanogenesis as an effective treatment for marine biofoulings, which is a major source of intermittently discharged organic solid wastes. Preliminary NO2--exposed sludge was inoculated to achieve stable methanogenesis process without NO2- inhibition...
January 8, 2018: Waste Management
https://www.readbyqxmd.com/read/29295851/proteomic-profiling-for-cardiovascular-biomarker-discovery-in-orthostatic-hypotension
#5
Madeleine Johansson, Fabrizio Ricci, Nay Aung, Richard Sutton, Olle Melander, Artur Fedorowski
Orthostatic hypotension (OH) has been linked with higher incidence of cardiovascular disease, but little is known about the mechanisms behind this association. We aimed to identify cardiovascular disease biomarkers associated with OH through a proteomic profiling approach. Seven hundred seventy-eight patients with unexplained syncope or orthostatic intolerance underwent head-up tilt test and supine blood samples. Of these, 220 met diagnostic criteria of OH, and 179 demonstrated normal hemodynamic response during head-up tilt test...
January 2, 2018: Hypertension
https://www.readbyqxmd.com/read/29291355/dual-spectroscopy-platform-for-the-surveillance-of-mars-mineralogy-using-a-decisions-fusion-architecture-on-simultaneous-libs-raman-data
#6
Javier Moros, Mohamed ElFaham, José Javier Laserna
A single platform, integrated by a laser-induced breakdown spectroscopy detector and a Raman spectroscopy sensor, has been designed to remotely (5 m) and simultaneously register the elemental and molecular signatures of rocks under Martian surface conditions. From this information, new data fusion architecture at decisions level is proposed to the correct categorization of the rocks. The approach is based on a decisions making process from the sequential checking of the spectral features representing the cationic and anionic counterparts of the specimen...
January 1, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29287861/bilateral-cochlear-implantation-or-bimodal-listening-in-the-paediatric-population-retrospective-analysis-of-decisive-criteria
#7
Cleo M C Dhondt, Freya K R Swinnen, Ingeborg J M Dhooge
INTRODUCTION: In children with bilateral severe to profound hearing loss, bilateral hearing can be achieved by either bimodal stimulation (CIHA) or bilateral cochlear implantation (BICI). The aim of this study was to analyse the audiologic test protocol that is currently applied to make decisions regarding the bilateral hearing modality in the paediatric population. METHODS: Pre- and postoperative audiologic test results of 21 CIHA, 19 sequential BICI and 12 simultaneous BICI children were examined retrospectively...
January 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29276706/a-cyclical-approach-to-continuum-modeling-a-conceptual-model-of-diabetic-foot-care
#8
Martha L Carvour, Allyssa Chiu
"Cascade" or "continuum" models have been developed for a number of diseases and conditions. These models define the desired, successive steps in care for that disease or condition and depict the proportion of the population that has completed each step. These models may be used to compare care across subgroups or populations and to identify and evaluate interventions intended to improve outcomes on the population level. Previous cascade or continuum models have been limited by several factors. These models are best suited to processes with stepwise outcomes-such as screening, diagnosis, and treatment-with a single defined outcome (e...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/29231243/neuromuscular-electrical-stimulation-nmes-for-patellofemoral-pain-syndrome
#9
REVIEW
Ana Luiza C Martimbianco, Maria Regina Torloni, Brenda Ng Andriolo, Gustavo Jm Porfírio, Rachel Riera
BACKGROUND: Patellofemoral pain syndrome, now generally referred to as patellofemoral pain (PFP), is one of the most common orthopaedic disorders, characterised by pain in the anterior or retropatellar knee region. Neuromuscular electrical stimulation (NMES) has been proposed generally as a complementary treatment, associated with other interventions such as exercise, or as a single treatment to increase muscle force, reduce knee pain, and improve function. OBJECTIVES: To assess the effects (benefits and harms) of neuromuscular electrical stimulation for people with patellofemoral pain...
December 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29231220/plug-and-actuate-on-demand-multimodal-individual-addressability-of-microarray-plates-using-modular-hybrid-acoustic-wave-technology
#10
Amgad R Rezk, Shwathy Ramesan, Leslie Y Yeo
The microarray titre plate remains a fundamental workhorse in genomic, proteomic and cellomic analyses that underpin the drug discovery process. Nevertheless, liquid handling technologies for sample dispensing, processing and transfer have not progressed significantly beyond conventional robotic micropipetting techniques, which are not only at their fundamental sample size limit, but are also prone to mechanical failure and contamination. This is because alternative technologies to date suffer from a number of constraints, mainly their limitation to carry out only a single liquid operation such as dispensing or mixing at a given time, and their inability to address individual wells, particularly at high throughput...
December 12, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/29224581/executive-function-and-other-cognitive-deficits-are-distal-risk-factors-of-generalized-anxiety-disorder-9-years-later
#11
Nur Hani Zainal, Michelle G Newman
OBJECTIVE: The cognitive model (Hirsch & Mathews, 2012) and attentional control theory (Eysenck & Derakshan, 2011) postulate that compromised executive function (EF) and other cognitive constructs are negatively linked to increased excessive and uncontrollable worry, the core symptom of generalized anxiety disorder (GAD). However, the prospective link between neuropsychological constructs and GAD are not well understood. METHODS: A nationally representative sample of 2605 community-dwelling adults whose average age was 55...
December 11, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/29184898/potential-benefits-of-using-ecological-momentary-assessment-to-study-high-risk-polydrug-use
#12
Alexis M Roth, Marisa Felsher, Megan Reed, Jesse L Goldshear, Quan Truong, Richard S Garfein, Janie Simmons
Background: While studies have documented both the feasibility and acceptability of using ecological momentary assessment (EMA) to study drug use, there is little empirical research assessing participants' perceptions of utilizing this technology-driven approach. Methods: Participants were English-speaking persons ≥18 years old who reported injection drug use and sequential (e.g., alcohol followed by opioid use) or simultaneous (i.e., injecting heroin and cocaine in one shot) polydrug use within 30 days recruited in San Diego, CA and Philadelphia, PA...
2017: MHealth
https://www.readbyqxmd.com/read/29178003/enhanced-phosphorus-removal-using-acid-treated-magnesium-slag-particles
#13
Xianqiang Tang, Rui Li, Min Wu, Lei Dong, Zhenhua Wang
Magnesium-enriched magnesium slag particles (MSPs) can be used as an adsorption substrate as well as the magnesium source for struvite precipitation. In this study, an HCl treatment was used to enhance MSPs for phosphorus removal. After soaking in 1 mol/L HCl, an 11.27% decrease in median diameter (D50) and a 6.73% increase in specific surface area were observed when compared with the original MSPs. The improvement of the MSP surface properties resulted in 188.96 mg/kg increase in the PO43- adsorption capacity...
November 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29174606/driving-behavior-recognition-using-eeg-data-from-a-simulated-car-following-experiment
#14
Liu Yang, Rui Ma, H Michael Zhang, Wei Guan, Shixiong Jiang
Driving behavior recognition is the foundation of driver assistance systems, with potential applications in automated driving systems. Most prevailing studies have used subjective questionnaire data and objective driving data to classify driving behaviors, while few studies have used physiological signals such as electroencephalography (EEG) to gather data. To bridge this gap, this paper proposes a two-layer learning method for driving behavior recognition using EEG data. A simulated car-following driving experiment was designed and conducted to simultaneously collect data on the driving behaviors and EEG data of drivers...
November 23, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29173630/aroma-profiling-of-an-aerated-fermentation-of-natural-grape-must-with-selected-yeast-strains-at-pilot-scale
#15
Jordi Tronchoni, José Antonio Curiel, María Pilar Sáenz-Navajas, Pilar Morales, Arancha de-la-Fuente-Blanco, Purificación Fernández-Zurbano, Vicente Ferreira, Ramon Gonzalez
The use of non-Saccharomyces strains in aerated conditions has proven effective for alcohol content reduction in wine during lab-scale fermentation. The process has been scaled up to 20 L batches, in order to produce lower alcohol wines amenable to sensory analysis. Sequential instead of simultaneous inoculation was chosen to prevent oxygen exposure of Saccharomyces cerevisiae during fermentation, since previous results indicated that this would result in increased acetic acid production. In addition, an adaptation step was included to facilitate non-Saccharomyces implantation in natural must...
April 2018: Food Microbiology
https://www.readbyqxmd.com/read/29154628/the-bandwidth-of-vwm-consolidation-varies-with-the-stimulus-feature-evidence-from-event-related-potentials
#16
Renning Hao, Mark W Becker, Chaoxiong Ye, Qiang Liu, Taosheng Liu
Our previous work suggests that 2 colors can be consolidated into visual short-term memory (VSTM) in parallel without a loss of memory precision, whereas consolidation of 2 orientations is performed in a strictly serial manner. Those experiments compared VSTM performance for simultaneously and sequentially presented stimuli. However, there is still controversy about whether the bandwidth for consolidation is determined by the type of information. To further investigate this issue, here we measured electroencephalography while participants attempted to consolidate 1, 2 or 4 simultaneously presented colors (Experiment 1) or orientations (Experiment 2) under limited presentation times...
November 20, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/29112841/extraction-and-quantification-of-chlorophenolate-molecules-in-soils-spiked-with-2-4-dichlorophenol-and-2-4-5-trichlorophenol
#17
Diana Bello, Carmen Trasar-Cepeda
The compounds 2,4-dichlorophenol (2,4-DCP) and 2,4,5-trichlorophenol (2,4,5-TCP) are classified as priority pollutants, with potentially hazardous impacts on the environment. In soil, dissociation of the phenol group occurs, resulting in the simultaneous presence of neutral phenol and anionic phenolate. Although the toxicity of 2,4-DCP and 2,4,5-TCP to soil microbiota has been suggested to be mainly due to the phenolate anion, this hypothesis cannot be tested due to the lack of appropriate methods of extracting and quantifying the anionic form of these compounds (unlike the neutral form, which can be easily quantified)...
November 4, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29109425/landscape-scale-conservation-design-across-biotic-realms-sequential-integration-of-aquatic-and-terrestrial-landscapes
#18
Paul B Leonard, Robert F Baldwin, R Daniel Hanks
Systematic conservation planning has been used extensively throughout the world to identify important areas for maintaining biodiversity and functional ecosystems, and is well suited to address large-scale biodiversity conservation challenges of the twenty-first century. Systematic planning is necessary to bridge implementation, scale, and data gaps in a collaborative effort that recognizes competing land uses. Here, we developed a conservation planning process to identify and unify conservation priorities around the central and southern Appalachian Mountains as part of the Appalachian Landscape Conservation Cooperative (App LCC)...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29058684/electrospun-polycaprolactone-nanofibres-decorated-by-drug-loaded-chitosan-nano-reservoirs-for-antibacterial-treatments
#19
Vincenzo Guarino, Iriczalli Cruz Maya, Rosaria Altobelli, Wan Khartini Abdul Khodir, Luigi Ambrosio, Marco A Alvarez Pèrez, Angela Almaguer Flores
Main limitation of conventional antibiotic therapies concerns the low efficacy to bacteria attacks for long treatment times. In this context, the integrated use of electrofluidodynamics (EFDs) - basically electrospinning and electrospraying - may represent an interesting route to design nanostructured platforms with controlled release to prevent the formation of bacterial biofilms in oral implant sites. They allow for the deposition of nanofibres and nanoparticles by different modes - i.e., sequential, simultaneous - for the fabrication of more efficacious systems in terms of degradation protection, pharmacokinetic control and drug distribution to the surrounding tissues...
October 23, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29042121/auditory-sequential-accumulation-of-spectral-information
#20
Yi Shen
In many listening situations, information about the spectral content of a target sound may be distributed over time, and estimating the target spectrum requires efficient sequential processing. Listeners' ability to estimate the spectrum of a random-frequency, six-tone complex was investigated and the spectral content of the complex was revealed using a sequence of bursts. Whether each of the six tones was presented within each burst was determined at random according to a presentation probability. In separate conditions, the presentation probabilities (p) ranged from 0...
October 11, 2017: Hearing Research
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