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https://www.readbyqxmd.com/read/28436824/efficient-treatment-of-aniline-containing-wastewater-in-bipolar-membrane-microbial-electrolysis-cell-fenton-system
#1
Xiaohu Li, Xiangdan Jin, Nannan Zhao, Irini Angelidaki, Yifeng Zhang
Aniline-containing wastewater can cause significant environmental problems and threaten the humans's life. However, rapid degradation of aniline with cost-efficient methods remains a challenge. In this work, a novel microbial electrolysis cell with bipolar membrane was integrated with Fenton reaction (MEC-Fenton) for efficient treatment of real wastewater containing a high concentration (4460 ± 52 mg L(-1)) of aniline. In this system, H2O2 was in situ electro-synthesized from O2 reduction on the graphite cathode and was simultaneously used as source of OH for the oxidation of aniline wastewater under an acidic condition maintained by the bipolar membrane...
April 19, 2017: Water Research
https://www.readbyqxmd.com/read/28435954/electrostatically-stabilized-hybrids-of-carbon-and-maghemite-nanoparticles-electrochemical-study-and-application
#2
D Baratella, M Magro, P Jakubec, E Bonaiuto, J de Almeida Roger, E Gerotto, G Zoppellaro, J Tucek, K C Safarova, R Zbořil, A Cecconello, I Willner, S Santagata, P Sambo, F Vianello
Binary hybrids have been investigated for the past few decades due to the emerging properties of nanoparticle composites. Electrostatically stabilized core-shell nanostructures composed of surface active magnetic nanoparticles (SAMNs) and differently charged carbon nanomaterials display specific electrochemical properties. In this work, a set of binary hybrids that include a new class of magnetic nanoparticles is presented and the electrochemical features of the hybrids are reported. Gallic acid derived carbon dots (GA-CDs), PEG derived graphene dots (PEG-GDs), and quaternized carbon dots (Q-CDs) characterized by different charged groups were used for the preparation of different complexes with SAMNs...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28434467/abdominal-and-auricular-acupuncture-reduces-blood-pressure-in-hypertensive-patients
#3
Hamid Abdi, Maryam Tayefi, Seyed Reza Moallem, Baxiao Zhao, Mojtaba Fayaz, Hossein Mohaddes Ardabili, Akram-Alsadat Razavi, Mahsa Darbandi, Sara Darbandi, Parisa Abbasi, Gordon A Ferns, Majid Ghayour-Mobarhan
INTRODUCTION: Hypertension is an important risk factor of cardiovascular disease (CVD), which is associated with premature death, myocardial infarction, stroke, peripheral vascular disease, and renal disease. The goal of the present study was to use a randomized controlled clinical trial to explore and compare the effectiveness of abdominal and auricular acupuncture on blood pressure in 440 subjects with and without obesity. METHODS: Four hundred participants were recruited and randomized to one of four groups: cases and controls receiving auricular acupuncture (204 subjects) and cases and controls receiving abdominal electroacupuncture (196 subjects)...
April 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28433870/automated-detection-of-premature-delivery-using-empirical-mode-and-wavelet-packet-decomposition-techniques-with-uterine-electromyogram-signals
#4
U Rajendra Acharya, Vidya K Sudarshan, Soon Qing Rong, Zechariah Tan, Choo Min Lim, Joel Ew Koh, Sujatha Nayak, Sulatha V Bhandary
An accurate detection of preterm labor and the risk of preterm delivery before 37 weeks of gestational age is crucial to increase the chance of survival rate for both mother and the infant. Thus, the uterine contractions measured using uterine electromyogram (EMG) or electro hysterogram (EHG) need to have high sensitivity in the detection of true preterm labor signs. However, visual observation and manual interpretation of EHG signals at the time of emergency situation may lead to errors. Therefore, the employment of computer-based approaches can assist in fast and accurate detection during the emergency situation...
April 18, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28430422/gauging-donor-acceptor-properties-and-redox-stability-of-chelating-click-derived-triazoles-and-triazolylidenes-a-case-study-with-rhenium-i-complexes
#5
Lisa Suntrup, Sinja Klenk, Johannes Klein, Sebastian Sobottka, Biprajit Sarkar
Bidentate ligands containing at least one triazole or triazolylidene (mesoionic carbene, MIC) unit are extremely popular in contemporary chemistry. One reason for their popularity is the similarities as well as differences in the donor/acceptor properties that these ligands display in comparison to their pyridine or other N-heterocyclic carbene counterparts. We present here seven rhenium(I) carbonyl complexes where the bidentate ligands contain combinations of pyridine/triazole/triazolylidene. These are the first examples of rhenium(I) complexes with bidentate 1,2,3-triazol-5-ylidene-containing ligands...
April 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28430240/linear-frequency-modulated-continuous-wave-ladar-system-for-synthetic-aperture-imaging
#6
Guangzuo Li, Ran Wang, Ziqi Song, Keshu Zhang, Yirong Wu, Jie Pan
A novel and high-efficiency linear frequency-modulated continuous-wave (FMCW) ladar system for synthetic aperture imaging is proposed and experimentally demonstrated. This novel system generates wide-bandwidth linear FMCW ladar signals by employing an electro-optic LiNbO<sub>3</sub>- in-phase and quadrature modulator with an effective bias controller. The effectiveness of the proposed system is experimentally validated. Optical synthetic aperture images are obtained by using two 0.41 cm aperture diameter telescopes at the distance of 1 km...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430230/compact-multichannel-high-resolution-micro-electro-mechanical-systems-based-interrogator-for-fiber-bragg-grating-sensing
#7
D Ganziy, B Rose, O Bang
We propose a novel type of compact high-resolution multichannel micro-electro-mechanical systems (MEMS)-based interrogator, where we replace the linear detector with a digital micromirror device (DMD). The DMD is typically cheaper and has better pixel sampling than an InGaAs detector used in the 1550 nm range, which leads to cost reduction and better performance. Moreover, the DMD is a 2D array, which means that multichannel systems can be implemented without any additional optical components in the interrogator...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28429003/electrochemical-plasmonic-metamaterials-towards-fast-electro-tuneable-reflecting-nanoshutters
#8
Debabrata Sikdar, Alwin Bucher, Cristian Zagar, Alexei A Kornyshev
Self-assembling arrays of metallic nanoparticles at liquid|liquid or liquid|solid interfaces could deliver new platforms for tuneable optical systems. Such systems can switch between very-high and very-low reflectance states upon assembly and disassembly of nanoparticles at the interface, respectively. This encourages creation of electro-variably reversible mirror/window nanoplasmonic devices. However, the response time of these systems is usually limited by the rate-of-diffusion of the nanoparticles in the liquid, towards the interface and back...
April 21, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28428680/coexistence-of-condylomata-acuminata-with-warty-squamous-cell-carcinoma-and-squamous-cell-carcinoma
#9
Mirna Erman-Vlahovic, Jelena Vlahovic, Milanka Mrcela, Zlatko Hrgovic
INTRODUCTION: Condyloma acuminatum has previously been considered to be a benign growth with no malignant potential, but a review of the literature supports the concept that condylomata acuminata may precede or be associated with invasive squamous cell carcinoma (ISCC) or warty squamous cell carcinoma (WSCC). CASE REPORT: We present a clinical case of a 58-year old woman with large, slow-growing, exophytic tumor of external genitalia shaped like a cauliflower with the propagation to both legs and behind...
February 2017: Medical Archives
https://www.readbyqxmd.com/read/28428549/low-noise-time-resolved-optical-sensing-of-electromagnetic-pulses-from-petawatt-laser-matter-interactions
#10
T S Robinson, F Consoli, S Giltrap, S J Eardley, G S Hicks, E J Ditter, O Ettlinger, N H Stuart, M Notley, R De Angelis, Z Najmudin, R A Smith
We report on the development and deployment of an optical diagnostic for single-shot measurement of the electric-field components of electromagnetic pulses from high-intensity laser-matter interactions in a high-noise environment. The electro-optic Pockels effect in KDP crystals was used to measure transient electric fields using a geometry easily modifiable for magnetic field detection via Faraday rotation. Using dielectric sensors and an optical fibre-based readout ensures minimal field perturbations compared to conductive probes and greatly limits unwanted electrical pickup between probe and recording system...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428117/cellular-non-nonlinear-network-model-of-microbial-fuel-cell
#11
Michail-Antisthenis Tsompanas, Andrew Adamatzky, Ioannis Ieropoulos, Neil Phillips, Georgios Ch Sirakoulis, John Greenman
A cellular non-linear network (CNN) is a uniform regular array of locally connected continuous-state machines, or nodes, which update their states simultaneously in discrete time. A microbial fuel cell (MFC) is an electro-chemical reactor using the metabolism of bacteria to drive an electrical current. In a CNN model of the MFC, each node takes a vector of states which represent geometrical characteristics of the cell, like the electrodes or impermeable borders, and quantify measurable properties like bacterial population, charges produced and hydrogen ion concentrations...
April 17, 2017: Bio Systems
https://www.readbyqxmd.com/read/28425827/efficacy-of-glycine-powder-air-polishing-combined-with-scaling-and-root-planing-in-the-treatment-of-periodontitis-and-halitosis-a-randomised-clinical-study
#12
Ayse Caygur, Mohammed R Albaba, Atilla Berberoglu, Hasan Guney Yilmaz
Introduction This study was performed to evaluate the clinical efficacy of using the Perio-Flow device (Electro Medical Systems, Nyon, Switzerland) adjunctively with mechanical instrumentation on periodontal parameters and halitosis. Materials and Methods Sixty patients who presented with a 4- to 6-mm probing pocket depth were recruited for the study. Patients were randomly assigned to scaling and root planing (SRP) or SRP + glycine powder air-polishing (GPAP). For both groups, the plaque index, gingival index, pocket depth, bleeding on probing, and clinical attachment level scores were recorded at baseline and 1 month...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28425705/facile-aqueous-phase-synthesis-of-ptau-bi2o3-hybrid-catalyst-for-efficient-electro-oxidation-of-ethanol
#13
Sumanta Sarkar, Rajkumar Jana, Hiranmayee Vadlamani, Swetha Ramani, Dundappa Mumbaraddi, Sebastian C Peter
In this work, we present a facile aqueous phase synthesis of a hybrid catalyst consists of PtAu alloy supported on Bi2O3 microspheres. Multistep reduction of HAuCl4 and K2PtCl4 salts on Bi2O3 and subsequent annealing leads to the formation of this hybrid catalyst. To the best of our knowledge, this is the first report of using Bi2O3 as a catalyst support in Fuel cell applications. The material was characterized by powder X-ray diffraction and various microscopic techniques. This composite showed remarkable activity as well as stability towards the electro-oxidation of ethanol in comparison to commercially available Pt/C...
April 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28425695/reduced-graphene-oxide-containing-smart-hydrogels-with-excellent-electro-response-and-mechanical-properties-for-soft-actuators
#14
Chao Yang, Zhuang Liu, Chen Chen, Kun Shi, Lei Zhang, Xiao-Jie Ju, Wei Wang, Rui Xie, Liang-Yin Chu
A novel reduced graphene oxide/poly(2-acrylamido-2-methylpropanesulfonic acid-co-acrylamide) (rGO/poly(AMPS-co-AAm)) nanocomposite hydrogel that possesses excellent electro-response and mechanical properties has been successfully developed. The rGO nanosheets that homogeneously dispersed in the hydrogels could provide prominent conductive platforms for promoting the ion transport inside the hydrogels to generate significant osmotic pressure between the outside and inside of such nanocomposite hydrogels. Thus, the electro-responsive rate and degree of the hydrogel for both deswelling and bending performances become rapid and remarkable...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28425553/structural-control-of-side-chain-chromophores-to-achieve-highly-efficient-electro-optic-activity
#15
Yuhui Yang, Zhuo Chen, Jialei Liu, Hongyan Xiao, Zhen Zhen, Xinhou Liu, Guohua Jiang
A series of chromophores J1-J4 have been synthesized based on julolidine donors modified with different rigid steric hindrance groups. Compared with the chromophore (J1) without the isolation group, chromophores J2, J3 and J4 show better stability. Structural analysis and photophysical property measurements were carried out to compare the molecular mobility and steric hindrance effect of the different donor-modified chromophores. All of these chromophores with isolation groups showed superb thermal stabilities with high thermal decomposition temperatures above 250 °C...
April 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28422485/fabrication-of-a-highly-sensitive-single-aligned-tio2-and-gold-nano-particle-embedded-tio2-nano-fiber-gas-sensor
#16
Alireza Nikfarjam, Seyedsina Hosseini, Nahideh Salehifar
In this research, a single-aligned nanofiber of pure TiO2 and Gold nano-particle (GNP)-TiO2 was fabricated using a novel electro-spinning procedure equipped with secondary electrostatic fields on highly sharp triangular and rectangular electrodes provided for gas sensing applications. The Sol used for spinning nanofiber consisted of Titanium Tetraisopropoxide (C12H28O4Ti), Acetic Acid (CH3COOH), Ethanol (C2H5OH) and Polyvinylpyrrolidone (PVP) and gold nanoparticle solution. FE-SEM, TEM, and XRD were used to characterize the single nanofiber...
April 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28422441/recent-advances-of-electrospun-nanofibrous-membranes-in-the-development-of-chemosensors-for-heavy-metal-detection
#17
Nan Zhang, Ruirui Qiao, Jing Su, Juan Yan, Zhiqiang Xie, Yiqun Qiao, Xichang Wang, Jian Zhong
It is critical to detect and analyze the heavy metal pollutions in environments and foods. Chemosensors have been widely investigated for fast detection of analytes such as heavy metals due to their unique advantages. In order to improve the detection sensitivity of chemosensors, recently electrospun nanofibrous membranes (ENMs) have been explored for the immobilization of chemosensors or receptors due to their high surface-to-volume ratio, high porosity, easiness of fabrication and functionalization, controllability of nanofiber properties, low cost, easy detection, no obvious pollution to the detection solution, and easy post-treatment after the detection process...
April 2017: Small
https://www.readbyqxmd.com/read/28422239/electro-osmosis-at-surfactant-laden-liquid-gas-interfaces-beyond-standard-models
#18
Alexia Barbosa De Lima, Laurent Joly
Electro-osmosis (EO) is a powerful tool to manipulate liquids in micro and nanofluidic systems. While EO has been studied extensively at liquid-solid interfaces, the case of liquid-vapor interfaces, found e.g. in foam films and bubbles, remains to be explored. Here we perform molecular dynamics (MD) simulations of EO in a film of aqueous electrolyte covered with fluid layers of ionic surfactants and surrounded by gas. Following the experimental procedure, we compute the zeta potential from the EO velocity, defined as the velocity difference between the middle of the liquid film and the surrounding gas...
April 19, 2017: Soft Matter
https://www.readbyqxmd.com/read/28422229/dendritic-growth-of-monolayer-ternary-ws2-1-x-se2x-flakes-for-enhanced-hydrogen-evolution-reaction
#19
Yu Zhang, Kaili Liu, Fengmei Wang, Tofik Ahmed Shifa, Yao Wen, Feng Wang, Kai Xu, Zhenxing Wang, Chao Jiang, Jun He
Two-dimensional transition-metal dichalcogenides (TMDs) have attracted much research interest in the hydrogen evolution reaction (HER) due to their superior electrocatalytic properties. Beyond binary TMDs, ternary TMD alloys, as electrocatalysts, were also gradually acknowledged for their remarkable efficiency in HER. Herein, we successfully synthesized monolayer dendritic ternary WS2(1-x)Se2x flakes possessing abundant active edge sites on a single crystalline SrTiO3 (STO(100)). And the obtained dendritic WS2(1-x)Se2x flakes could be transferred intact to arbitrary substrates, for example, SiO2/Si and Au foils...
April 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28421214/hybrid-molecular-enzymatic-catalytic-cascade-for-complete-electro-oxidation-of-glycerol-using-a-promiscuous-nad-dependent-formate-dehydrogenase-from-candida-boidinii
#20
Sofiene Abdellaoui, Madelaine Seow Chavez, Ivana Matanovic, Andrew R Stephens, Plamen Atanassov, Shelley D Minteer
Glycerol is a common fuel considered for bioenergy applications. Computational docking studies were performed on formate dehydrogenase from Candida boidinii (cbFDH) that showed that mesoxalate can bind to the buried active site of the holo form predicting that mesoxalate, a byproduct of glycerol oxidation, may act as its substrate. Spectroscopic assays and characterization by HPLC and GC/TCD have shown for the first time that cbFDH can act as a decarboxylase with mesoxalate. From this assessment, cbFDH was combined with NH2-TEMPO to form a novel hybrid anode to oxidize glycerol to carbon dioxide at near-neutral pH...
April 19, 2017: Chemical Communications: Chem Comm
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