Sentences with phrase «with electrochemical»

Determination of morphine in urine by solid - phase immunoextraction and high - performance liquid chromatography with electrochemical detection.

Reversed - phase high - performance liquid chromatography (HPLC) with electrochemical detection was used to analyse ascorbic acid, based on the method of Iriyama et al. with modifications [29], [30].

Kehr, J.; Hu, X.J.; Yoshitake, T.; Scheller, D. Determination of the dopamine agonist rotigotine in microdialysates from the rat brain by microbore column liquid chromatography with electrochemical detection.

While at the Idaho National Engineering and Environmental Laboratory, Jacox says he read about the Mills cell and decided in 1991 to perform independent experiments along with electrochemical experts on staff in battery development.

Searching for a better way to isolate metal titanium, a team led by materials chemists George Zheng Chen and Derek Fray of the University of Cambridge in the United Kingdom came up with an electrochemical technique, they report in the 21 September issue of Nature.

Hydrogen permeation through metals can be conveniently studied with electrochemical methods.

Not exact matches

The team's design uses solar energy (captured with photovoltaic panels) to power an electrochemical reactor that converts water and human waste into fertilizer and hydrogen.

I believe we are electrochemical machines interacting with other ones and the environment, with perhaps a pinch of quantum behavior thrown in.

After electrochemical treatment with an organic acid and spin - coating with a polymer layer, the h - BN was electrochemically exfoliated by generating hydrogen bubbles at the rhodium surface.

By mixing DNA with an electrochemiluminescent (ECL) agent, a mixture that lights up after electrochemical reactions take place, and exposing it to extracts from cigarette smoke and e-cigarette vapor, the chemists were able to spot DNA damage.

When the neuron is stimulated, sodium ions rush into the cell and potassium ions rush out, leaving the neuron with a positive electrochemical charge.

The researchers show for the first time that the fungus Neurospora crassa can transform manganese into a mineral composite with favorable electrochemical properties.

Scanning electrochemical cell microscopy revealed that the dislocation density correlated with CO2 electroreduction activity, but such defects had no effect on H2 evolution.

The catalysts in the air cathode aids the electrochemical reaction of the cell with oxygen gas.

«Our experimental setup consists of a paper device with eight electrochemical biosensors — for handy, one - time, disposable use — and a custom - made, handheld electrochemical reader, or potentiostat, to keep costs as low as possible,» explained Xinyu Liu, an assistant professor in the Department of Mechanical Engineering at McGill University.

Dimethylsulfoxide (DMSO) is a good choice for electrochemical applications, but it unfortunately reacts with sodium to form products that can be problematic.

The brain is a soft, squishy organ, which has evolved over millions of years, and its synaptic connections are not electronic but electrochemical (hence our sluggish ability to solve equations, compared with a computer's speed).

Nanostructured materials have shown extraordinary promise for electrochemical energy storage, but these materials are usually limited to laboratory cells with ultrathin electrodes and very low mass loadings.

Carbon - coated glass derived - silicon (gSi @C) electrodes demonstrated excellent electrochemical performance with a capacity of ~ 1420 mAh / g at C / 2 rate after 400 cycles.

Waldman uses our long war with the iron oxide as a loose frame, focusing more on the people crusading against the electrochemical reaction than on the science they marshal to fight it.

Most batteries consist of electrochemical cells with two electrodes — an anode and a cathode — and are filled with an electrolyte.

The cost advantages of thermal storage over electrochemical storage also make a TPV with thermal energy storage (TES) system attractive for converting and storing energy for use on the grid, said Hamid Reza Seyf, a graduate research assistant who did the system modeling.

«This work paves the way for not only paper - based electronics with graphene circuits,» the researchers wrote in their paper, «it enables the creation of low - cost and disposable graphene - based electrochemical electrodes for myriad applications including sensors, biosensors, fuel cells and (medical) devices.»

A comparison of electrochemical and electrokinetic parameters determined for cellophane membranes in contact with NaCl and NaNO3 solutions.

Imabayashi, S. - I., Kitamura, N., Tazuke, S. & Tokuda, K. Substituent effects on electrochemical reduction of viologen dimer and trimer with ethylene spacer.

The products from the continuous microbial conversion can be quickly converted to a real fuel with the intermittent and much faster electrochemical conversion.

Results: In an unprecedented find, a research team including scientists from Pacific Northwest National Laboratory discovered that the three electronic and electrochemical properties having to do with the energy necessary for electrons and molecules to assemble or break apart are not always correlated.

An electrochemical detector (EG & G Instruments, Wokingham, UK) was used for detection, with the working electrode set at 800 mV and a sensitivity 0.2 µamp.

Several promising earth - abundant low band - gap TMO compounds with desirable band edge energies and electrochemical stability are identified by our computational efforts and then synergistically evaluated using high - throughput synthesis and photoelectrochemical screening techniques by our experimental collaborators at Caltech.

Abstract: Widespread use of artificial photosynthesis hinges upon development of photocatalysts and light absorbers with excellent electrochemical stability in aqueous solution.

The University of North Dakota Energy & Environmental Research Center (EERC) is working with FuelCell Energy, Inc., an integrated stationary fuel cell manufacturer, to develop a durable, low - cost, and high - performance electrochemical cell to convert natural gas and other methane - rich gas into methanol, a major chemical commodity with worldwide applications in... Read more →

The glucose extracted via reverse iontophoresis reacts with glucose oxidase to produce hydrogen peroxide, which is then detected by the electrochemical sensor.

Reaction mechanisms for the electrochemical reduction of CO2 on the Cu (100) surface from quantum mechanics free energy calculations with explicit water.

The innovative aspect of this activity was the notion that the concept of macroscopic devices could be extended to the molecular level, and that it was possible to design supramolecular systems that, upon stimulation with external energy stimuli such as UV / Visible light, are capable of performing a variety of specific functions: (i) systems for information processing (e.g., wires, switches, antennas, plug / socket systems, extension cables, memories, logic gates, encoder / decoder, rudimentary neuron - like systems), (ii) devices that when powered by chemical energy or electrochemical energy or by light exhibit machine - like behavior (e.g., piston / cylinder systems, shuttles, lifts, rotary rings, dendritic photo - switchable boxes), and (iii) components for artificial photosynthetic systems.

The LLNL team has built a strong foundation of coupling spectroscopy experiments with advanced simulations and has recently extended their work to include electrochemical systems [1] and surface / interface electronic structure of hydrogen storage materials.

Acoustic emission measurements collected during electrochemical tests, combined with advanced imaging techniques such as transmission X ‐ ray microscopy, provide a window into the internal workings of battery materials during energy storage cycles.

Acoustic emission measurements collected during electrochemical tests, combined with advanced imaging techniques such as transmission X ‐ ray microscopy, provide a window into the internal workings of battery materials...

Mr Horne says AIM will have a more specific impact on the mining industry through projects that link novel and robust sensors with waste treatment, using a newly - developed high intensity electrochemical processing technique.

«In analyzing the X-ray data on this level, we were able to track the electrochemical reactions with far more accuracy than previous methods, and determined that iron fluoride performs better when it has a porous microstructure,» says Li.

Acronyms: XRF = x-ray fluoresencence; RBS = Rutherford Backscattering; XRD = x-ray diffraction; SEM = scanning electron microscopy; AFM = atomic force microcopy; PES = photoelectron spectroscopy, with x-rays (XPS) and ultraviolet (UPS); KP = Kelvin probe measurements, SECM = scanning electrochemical microscopy, PL = photoluminescence; FTIR = Fourier transform infrared spectroscopy

We are electrochemists, material scientists, and engineers with cutting - edge expertise in the field of CO ₂ electrocatalysis and electrochemical reactor design, scouted from the best programs in the world.

Along with potassium, they create a membrane potential, or electrochemical gradient, between cells; the resulting electrical charges carry nerve impulses, contract muscle cells and help regulate your heartbeat.

The bundle includes 4 - 5 lessons worth of content including: Introduction to electrochemical cells Daniell Cell practical Calculating emf values Predicting if a reaction is feasible based on emf values Standard Hydrogen Electrodes Electrochemical Series Fuel cells including Hydrogen Oxygen Fuel cells Exam Question assessment booklet with mark scheme

The second part is a polymer with optical absorption controllable by an electrochemical potential.

So we have nuclear fusion, photoelectric conversion, electrochemical conversion, and mechanical work — all with zero emissions.

Komhyr, W.D., B.J. Connor, I.S. Mcdermid, T.J. McGee, A.D. Parrish, J.J. Margitan, Comparison of STOIC 1989 ground - based lidar, microwave spectrometer, and Dobson spectrophotometer Umkehr ozone profiles with ozone profiles from balloon - borne electrochemical concentration cell ozonesondes, J. Geophys.

The Brewer - Milford type ozone sensor consisted of a single electrochemical cell with a silver anode and platinum cathode immersed in an alkaline potassium iodide solution.

Even with strong brine, ohmic losses were about half of the electrochemical potential of the reaction.

Instead of an electrochemical reaction, a physical reaction causes a change in opacity with just a flick of a switch and a touch of silver.

Nanostructured, enhanced with silicon oxide, covered with a nanometer - thin layer of aluminum oxide and cobalt oxide — these treatments optimize the electrochemical properties of the material, but are nonetheless simple to apply.