829 results match your criteria electrode chambers


Microbial fuel cells a state-of-the-art technology for wastewater treatment and bioelectricity generation.

Environ Res 2022 Mar 14;204(Pt D):112387. Epub 2021 Nov 14.

Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom. Electronic address:

Wastewater treatment and electricity generation have been the major concerns for the last few years. The scarcity of fossil fuels has led to the development of unconventional energy resources that are pollution-free. Microbial fuel cell (MFC) is an environmental and eco-friendly technology that harvests energy through the oxidation of organic substrates and transform into the electric current with the aid of microorganisms as catalysts. Read More

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Hybrid constructed wetlands integrated with microbial fuel cells and reactive bed filter for wastewater treatment and bioelectricity generation.

Environ Sci Pollut Res Int 2021 Nov 15. Epub 2021 Nov 15.

Postgraduate Program in Environmental Technology, University of Santa Cruz do Sul (UNISC), Avenida Independência, 2293, Santa Cruz do Sul, Rio Grande do Sul, 96815-900, Brazil.

The present study aimed to develop a pilot-scale integrated system composed of anaerobic biofilter (AF), a floating treatment wetland (FTW) unit, and a vertical flow constructed wetland coupled with a microbial fuel cell (CW-MFC) and a reactive bed filter (RBF) for simultaneously decentralized urban wastewater treatment and bioelectricity generation. The first treatment stage (AF) had 1450 L and two compartments: a settler and a second one filled with plastic conduits. The two CWs (1000 L each) were vegetated with mixed plant species, the first supported in a buoyant expanded polyethylene foam and the second (CW-MFC) filled with pebbles and gravel, whereas the RBF unit was filled with P adsorbent material (light expanded clay aggregate, or LECA) and sand. Read More

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November 2021

Microbial fuel cells and their electrified biofilms.

Biofilm 2021 Dec 20;3:100057. Epub 2021 Sep 20.

Bristol BioEnergy Centre, BRL, University of the West of England, Frenchay Campus, BS16 1QY, UK.

Bioelectrochemical systems (BES) represent a wide range of different biofilm-based bioreactors that includes microbial fuel cells (MFCs), microbial electrolysis cells (MECs) and microbial desalination cells (MDCs). The first described bioelectrical bioreactor is the Microbial Fuel Cell and with the exception of MDCs, it is the only type of BES that actually produces harvestable amounts of electricity, rather than requiring an electrical input to function. For these reasons, this review article, with previously unpublished supporting data, focusses primarily on MFCs. Read More

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December 2021

Parallelizable Microfluidic Platform to Model and Assess In Vitro Cellular Barriers: Technology and Application to Study the Interaction of 3D Tumor Spheroids with Cellular Barriers.

Biosensors (Basel) 2021 Sep 3;11(9). Epub 2021 Sep 3.

NMI Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraße 55, 72770 Reutlingen, Germany.

Endothelial and epithelial cellular barriers play a vital role in the selective transport of solutes and other molecules. The properties and function of these barriers are often affected in case of inflammation and disease. Modelling cellular barriers in vitro can greatly facilitate studies of inflammation, disease mechanisms and progression, and in addition, can be exploited for drug screening and discovery. Read More

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September 2021

Electrochemical water softening as pretreatment for nitrate electro bioremediation.

Sci Total Environ 2022 Feb 20;806(Pt 1):150433. Epub 2021 Sep 20.

LEQUiA, Institute of the Environment, University of Girona, C/ Maria Aurèlia Capmany, 69, E-17003 Girona, Spain. Electronic address:

Electro bioremediation is gaining interest as a sustainable treatment for contaminated groundwater. Nevertheless, the investigation is still at the laboratory level, and before their implementation is necessary to overcome important drawbacks. A prevalent issue is the high groundwater hardness that generates scale deposition on electrodes that irreversibly affects the treatment effectiveness and their lifetime. Read More

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February 2022

Human neuromuscular junction on micro-structured microfluidic devices implemented with a custom micro electrode array (MEA).

Lab Chip 2021 10 26;21(21):4223-4236. Epub 2021 Oct 26.

IGMM, University of Montpellier, CNRS, Montpellier, France.

In the neuromuscular system, signal transmission from motor neurons (MNs) to innervated muscle fibers is crucial for their synaptic function, viability, and maintenance. In order to better understand human neuromuscular junction (hNMJ) functionality, it is important to develop on-a-chip devices with human cells. To investigate this cell network, microfluidic platforms are useful to grow different cell types in isolated compartments. Read More

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October 2021

Genomic and physiological analyses of the zebrafish atrioventricular canal reveal molecular building blocks of the secondary pacemaker region.

Cell Mol Life Sci 2021 Oct 23;78(19-20):6669-6687. Epub 2021 Sep 23.

International Institute of Molecular and Cell Biology in Warsaw, Warsaw, Poland.

The atrioventricular canal (AVC) is the site where key structures responsible for functional division between heart regions are established, most importantly, the atrioventricular (AV) conduction system and cardiac valves. To elucidate the mechanism underlying AVC development and function, we utilized transgenic zebrafish line sqet31Et expressing EGFP in the AVC to isolate this cell population and profile its transcriptome at 48 and 72 hpf. The zebrafish AVC transcriptome exhibits hallmarks of mammalian AV node, including the expression of genes implicated in its development and those encoding connexins forming low conductance gap junctions. Read More

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October 2021

A Tissue Engineering Chamber for Continuous Pulsatile Electrical Stimulation of Vascularized Cardiac Tissues .

Bioelectricity 2020 Dec 16;2(4):391-398. Epub 2020 Dec 16.

O'Brien Institute Department, St Vincent's Institute of Medical Research, Fitzroy, Australia.

Cardiomyocytes derived from pluripotent stem cells are immature. Maturation of cardiomyocytes is a multifactorial dynamic process that involves various factors that cannot be fully recapitulated . Here, we report a novel tissue engineering chamber with an integrated electrical stimulator and electrodes that will allow wireless electrical stimulation of cardiac tissue . Read More

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December 2020

Selective recovery of phosphorus and urea from fresh human urine using a liquid membrane chamber integrated flow-electrode electrochemical system.

Water Res 2021 Sep 12;202:117423. Epub 2021 Jul 12.

State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China. Electronic address:

Phosphorus (P) extraction from human urine is a potential strategy to address global resource shortage, but few approaches are able to obtain high-quality liquid P products. In this study, we introduced an innovative flow-electrode capacitive deionization (FCDI) system, also called ion-capture electrochemical system (ICES), for selectively extracting P and N (i.e. Read More

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September 2021

Electrocatalytic desalination with CO reduction and O evolution.

Nanoscale 2021 Jul 8;13(28):12157-12163. Epub 2021 Jul 8.

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, 510006, China.

Multifunctional electrocatalytic desalination is a promising method to increase the production of additional valuable chemicals during the desalination process. In this work, a multifunctional desalination device was demonstrated to effectively desalinate brackish water (15 000 ppm) to 9 ppm while generating formate from captured CO at the Bi nanoparticle cathode and releasing oxygen at the Ir/C anode. The salt feed channel is sandwiched between two electrode chambers and separated by ion-exchange membranes. Read More

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[Multimaterial 3D-printed contactless conductivity/laser-induced fluorescence dual-detection cell for capillary electrophoresis].

Se Pu 2021 Aug;39(8):921-926

School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China.

Dual detection, which simultaneously employs two complementary detection methods, is a useful approach to enhance the selectivity and sensitivity of capillary electrophoresis (CE). Through dual detection, multiple classes of analytes with different structural and chemical characteristics can be sensitively detected using a single CE method. In addition, the comigrating peaks can be distinguished by comparing the signal outputs of two detectors with different selectivities. Read More

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Advantages and limitations of various treatment chamber designs for reversible and irreversible electroporation in life sciences.

Bioelectrochemistry 2021 Oct 11;141:107841. Epub 2021 May 11.

Institute of Food Technology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria.

The fundamental mechanisms of pulsed electric fields on biological cells are not yet fully elucidated, though it is apparent that membrane electroporation plays a crucial role. Little is known about treatment-chamber-specific effects, and systematic studies are scarce. Thus, the present study evaluates the (dis-)advantages of various treatment chamber designs for liquid applications at differing scales. Read More

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October 2021

Spread-out Bragg peak proton FLASH irradiation using a clinical synchrocyclotron: Proof of concept and ion chamber characterization.

Med Phys 2021 Aug 11;48(8):4472-4484. Epub 2021 Jul 11.

Department of Radiation Oncology, Washington University School of Medicine, St. Louis, MO, USA.

Purpose: The purpose of this work is to (a) demonstrate the feasibility of delivering a spread-out Bragg peak (SOBP) proton beam in ultra-high dose rate (FLASH) using a proton therapy synchrocyclotron as a major step toward realizing an experimental platform for preclinical studies, and (b) evaluate the response of four models of ionization chambers in such a radiation field.

Methods: A clinical Mevion HYPERSCAN synchrocyclotron was adjusted for ultra-high dose rate proton delivery. Protons with nominal energy of 230 MeV were delivered in pulses with temporal width ranging from 12. Read More

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Characterization of neuronal viability and network activity under microfluidic flow.

J Neurosci Methods 2021 07 28;358:109200. Epub 2021 Apr 28.

School of Electronic and Electrical Engineering, University of Nottingham, Nottingham, United Kingdom. Electronic address:

Background: Microfluidics technology has the potential to allow precise control of the temporal and spatial aspects of solute concentration, making it highly relevant for the study of volume transmission mechanisms in neural tissue. However, full utilization of this technology depends on understanding how microfluidic flow at the rates needed for rapid solution exchange affects neuronal viability and network activity.

New Method: We designed a tape-based pressurized microfluidic flow system that is simple to fabricate and can be attached to commercial microelectrode arrays. Read More

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An study of comparative evaluation of efficacy of electrochemically activated water as a root canal irrigant in smear layer removal.

J Conserv Dent 2020 Sep-Oct;23(5):447-450. Epub 2021 Feb 10.

Department of Conservative Dentistry and Endodontics, PMS College of Dental Science and Research, Thiruvananthapuram, Kerala, India.

Aim: The aim was to compare and evaluate the efficacy of electrochemically activated water (ECA) against maleic acid, Mixture of tetracycline, acid and detergent. ie; 3% doxycycline, 4.25% citric acid, and 0. Read More

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February 2021

Circulation of anodic effluent to the cathode chamber for subsequent treatment of wastewater in photosynthetic microbial fuel cell with generation of bioelectricity and algal biomass.

Chemosphere 2021 Sep 31;278:130455. Epub 2021 Mar 31.

School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani, 12120, Thailand. Electronic address:

Synthetic wastewater containing 1500 mg L of COD was treated in the anode chamber for 5, 10, and 20 d. An anode chamber was conducted under anaerobic conditions with mixed culture bacteria inoculum attached to the anode. Anodic effluent was transferred to the cathode chamber for further treatment for 5, 10, and 20 d as the growth medium of Chlorella vulgaris. Read More

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September 2021

Correction of the measured current of a small-gap plane-parallel ionization chamber in proton beams in the presence of charge multiplication.

Z Med Phys 2021 May 13;31(2):192-202. Epub 2021 Mar 13.

National Physical Laboratory, Medical Radiation Science, Teddington, United Kingdom; MedAustron Ion Therapy Center, Medical Physics, Wiener Neustadt, Austria.

Purpose: The aims of this work are to study the response of a small-gap plane-parallel ionization chamber in the presence of charge multiplication and suggest an experimental method to determine the product of the recombination correction factor (k) and the charge multiplication correction factor (k) in order to investigate the latter.

Methods: Experimental data were acquired in scanned proton beams and in a Cobalt-60 beam. Measurements were carried out using an IBA PPC05 chambers of which the electrode gap is 0. Read More

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[Identification of the status of individual drug-administration behavior in heroin-withdrawal rats based on FrA EEG].

Zhongguo Ying Yong Sheng Li Xue Za Zhi 2020 Sep;36(5):517-523

Department of Medical Engineering, Wannan Medical College, Wuhu 241002.

To identify the compulsive drug-seeking behavior of the individual in the heroin-addicted rat, a novel analysis method of telemetering electroencephalogram (EEG) in the frontal association cortex (FrA) induced by heroin-dependent position preference in rats. Thirty clean-grade Wistar rats after implantation of prefrontal cortex electrodes, were randomly divided into the surgical control group (=10) and heroin-inducing group (=20). The heroin-induced group was subcutaneously injected with heroin 0. Read More

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September 2020

A gas-free electrodialytic pH modifier for ion chromatography.

Heliyon 2021 Feb 10;7(2):e06229. Epub 2021 Feb 10.

Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.

We for the first time describe a gas-free electrodialytic pH modifier deployed at the pump outlet side to manipulate carbonate eluent used for ion chromatography (IC). It is in sandwich configured, in which the central eluent channel is spatially isolated from two outer regenerant chambers by a stacked cation exchange membranes (sCEM) and a bipolar membrane (BPM) plus a stacked anion exchange membranes (sAEM) (BPM-sAEM), the cation exchange side of BPM is facing the central channel (the cathode direction). One electrode is put in each regenerant chamber and the sCEM side is cathode with respect to the anode of BPM-sAEM side. Read More

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February 2021

Emerging Technologies in Cardiac Pacing From Leadless Pacers to Stem Cells.

Curr Probl Cardiol 2021 May 27;46(5):100797. Epub 2021 Jan 27.

Arrythmia Service, Department of Cardiology, Memphis VA Medical Center, The University of Memphis, Memphis, TN. Electronic address:

Modern pacemakers can sense and pace multiple chambers of the heart. These pacemakers have different modes and features to optimize atrioventricular synchrony and promote intrinsic conduction. Despite recent advancements, current pacemakers have several drawbacks that limit their feasibility. Read More

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An effective separation of toxic arsenic from aquatic environment using electrochemical ion exchange process.

J Hazard Mater 2021 06 26;412:125240. Epub 2021 Jan 26.

Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603110, India.

The existence of arsenic in drinking water available for human consumption in multiple nations is among the major health issues globally. Intensified research efforts has made to eradicate arsenic contaminants from water in order to supply people who are living in multiple regions with safe drinking water. A novel process for the deletion of arsenic from aqueous solutions by the electrochemical ion exchange hybrid method were explored in this work. Read More

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Coupling of nitrifying granular sludge into microbial fuel cell system for wastewater treatment: System performance, electricity production and microbial community shift.

Bioresour Technol 2021 Apr 20;326:124741. Epub 2021 Jan 20.

Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.

A novel electrochemical system coupling of nitrifying granular sludge (NGS) into microbial fuel cell (MFC) system was conducted for simultaneous electricity production and wastewater treatment under sequencing batch mode. After 60 days operation, the contaminants of organic and NH-N removal efficiencies of the system were high of 95.43% and 98. Read More

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Reference dose determination in 60Co and high-energy radiotherapy photon beams by using Farmer-type cylindrical ionization chambers - an experimental investigation.

Authors:
John Swanpalmer

Biomed Phys Eng Express 2020 05 6;6(4):045003. Epub 2020 May 6.

Sahlgrenska University Hospital, Department of Medical Physics and Biomedical Engineering, Gothenburg, Sweden. Department of Radiation Physics, Sahlgrenska Academy, University of Gothenburg, Sweden.

Ionization chamber dosimetry is predominantly used for determination of the absorbed dose to water in Co and high-energy radiotherapy photon beams. The most widespread ionization chambers employed for absolute or reference dose determinations in reference conditions are the Farmer-type cylindrical ionization chambers. The Farmer-type ionization chambers have a variety of constructions and materials and their responses vary in the radiation beam. Read More

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Comparison of different extracting agents for the recovery of Pb and Zn through electrokinetic remediation of mine tailings.

J Environ Manage 2021 Feb 10;279:111728. Epub 2020 Dec 10.

Department of Chemical Engineering, University of Malaga, Malaga, Spain. Electronic address:

This study was conducted to investigate the feasibility of Electrokinetic Remediation to remove lead and zinc from real mine tailings, collected from the Lacan's lead and zinc Mineralized Flotation Processing Plant (Markazi province, Iran). High buffering capacity, high organic matter, and heavy metal contamination were the unique characteristics of this mine tailing. Electrokinetic remediation of the mine tailings was carried out in 11 separate experiments under constant voltage gradient of 2 V/cm for 9 days. Read More

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February 2021

IAEA-AAPM TRS-483-based reference dosimetry of the new RefleXion biology-guided radiotherapy (BgRT) machine.

Med Phys 2021 Apr 4;48(4):1884-1892. Epub 2021 Mar 4.

Medical Physics Unit, McGill University, Montreal, Quebec, H4A 3J1, Canada.

Purpose: The purpose of this study is to provide data for the calibration of the recent biology-guided radiotherapy (BgRT) machine (Hayward, CA, USA) following the International Atomic Energy Agency (IAEA) and the American Association of Physicists in Medicine (AAPM) TRS-483 code of practice (COP) (Palmans et al. International Atomic Energy Agency, Vienna, 2017) and (Mirzakhanian et al. Med Phys, 2020). Read More

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Ion collection efficiency of ionization chambers in ultra-high dose-per-pulse electron beams.

Med Phys 2021 Feb 3;48(2):819-830. Epub 2021 Jan 3.

University Clinic for Medical Radiation Physics, Medical Campus Pius Hospital, Carl von Ossietzky University, Oldenburg, 26121, Germany.

Purpose: The ion collection efficiency of vented ionization chambers has been investigated in an ultra-high dose-per-pulse (DPP) electron beam. The role of the chamber design and the electric field strength in the sensitive air volume have been evaluated.

Methods: An advanced Markus chamber and three specially designed parallel plate air-filled ionization chambers (EWC: End Window Chamber) with varying electrode distance of 0. Read More

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February 2021

A rare case of hypoplastic coronary sinus partially draining into right superior vena cava: A case report.

Pacing Clin Electrophysiol 2021 01 29;44(1):178-180. Epub 2020 Nov 29.

Max Super Speciality Hospital, New Delhi, India.

Background: The hypoplastic coronary sinus (CS) is a rare anomaly of the cardiac venous system, wherein some of the tributaries fail to join the CS. These tributaries usually drain into atrial chambers through dilated thebesian channels. We report the first case where the tributaries are draining into the right superior vena cava (SVC). Read More

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January 2021

Miniaturized free-flow electrophoresis: production, optimization, and application using 3D printing technology.

Electrophoresis 2021 02 22;42(3):305-314. Epub 2020 Nov 22.

Institute of Technical Chemistry, Leibniz University Hannover, Callinstraße 5, Hannover, 30167, Germany.

The increasing resolution of three-dimensional (3D) printing offers simplified access to, and development of, microfluidic devices with complex 3D structures. Therefore, this technology is increasingly used for rapid prototyping in laboratories and industry. Microfluidic free flow electrophoresis (μFFE) is a versatile tool to separate and concentrate different samples (such as DNA, proteins, and cells) to different outlets in a time range measured in mere tens of seconds and offers great potential for use in downstream processing, for example. Read More

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February 2021

Characterising Vascular Cell Monolayers Using Electrochemical Impedance Spectroscopy and a Novel Electroanalytical Plot.

Authors:
Anubhav Bussooa

Nanotechnol Sci Appl 2020 23;13:89-101. Epub 2020 Sep 23.

BHF Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, UK.

Introduction: Biological research relies on the culture of mammalian cells, which are prone to changes in phenotype during experiments involving several passages of cells. In regenerative medicine, specifically, there is an increasing need to expand the characterisation landscape for stem cells by identifying novel stable markers. This paper reports on a novel electric cell-substrate impedance sensing-based electroanalytical diagram which can be used for the "electrical characterisation" of cell monolayers consisting of smooth muscle cells, endothelial cells or co-culture. Read More

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September 2020

Independent and grouped 3D cell rotation in a microfluidic device for bioimaging applications.

Biosens Bioelectron 2020 Dec 28;170:112661. Epub 2020 Sep 28.

Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom; Healthcare Technology Hub, Ulster University, Jordanstown Shore Road, BT37 0QB, Northern Ireland, United Kingdom. Electronic address:

Cell rotation reveals important information which facilitates identification and characterization of different cells. Markedly, achieving three dimensional (3D) rolling rotation of single cells within a larger group of cells is rare among existing cell rotation techniques. In this work we present a simple biochip which can be used to trap and rotate a single cell, or to rotate multiple cells relative to each other within a group of individual red blood cells (RBCs), which is crucial for imaging cells in 3D. Read More

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December 2020