Results 61 to 70 of about 10,584,442 (302)

Study on influence of potential gradient on dewatering and consolidation characteristics of fine tailing sand and its mechanism

Meitan xuebao
Due to low hydraulic conductivity and poor water permeability, the sand particles of tailings storage pile dams lead to the problems of poor drainage capacity, long consolidation time and low mechanical strength of the pile dams, which are prone to cause
Junqing GUO, Teng LONG, Zhaoyun CHAI, Zhijun WU, Yuqing WANG, Yangyi WU, Decheng XIANG   +6 more
doaj   +1 more source

A Mathematical Model of a Direct Propane Fuel Cell

Journal of Chemistry, 2015
A rigorous mathematical model for direct propane fuel cells (DPFCs) was developed. Compared to previous models, it provides better values for the current density and the propane concentration at the exit from the anode.
Hamidreza Khakdaman, Yves Bourgault, Marten Ternan   +2 more
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Atmospheric Electricity Data From Lerwick During 1964 to 1984

Geoscience Data Journal
A dataset of the atmospheric Potential Gradient (PG) from Lerwick observatory in Shetland is now available, which provides hourly‐averaged PG for each month, from January 1964 to July 1984.
R. G. Harrison, H. Mkrtchyan, K. A. Nicoll   +2 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

Cardio‐microcurrent device for chronic heart failure: first‐in‐human clinical study

ESC Heart Failure, 2021
Aims Most devices for treating ambulatory Class II and III heart failure are linked to electrical pulses. However, a steady electric potential gradient is also necessary for appropriate myocardial performance and may be disturbed by structural heart ...
Dragana Kosevic, Dominik Wiedemann, Petar Vukovic, Velibor Ristic, Julia Riebandt, Una Radak, Kersten Brandes, Peter Goettel, Hans‐Dirk Duengen, Elvis Tahirovic, Tatjana Kottmann, Hans Werner Voss, Marija Zdravkovic, Svetozar Putnik, Jan D. Schmitto, Johannes Mueller, Jesus Eduardo Rame, Miodrag Peric   +17 more
doaj   +1 more source

THE NON-CORRELATION OF BIOELECTRIC POTENTIALS WITH IONIC GRADIENTS [PDF]

The Journal of General Physiology, 1956
The sartorius muscles of 320 toads have been analyzed for Na+ and K+. There is a wide variation in the Na+ content which when calculated intracellularly varied from 0 m.eq./kg. to 58 m.eq./kg. In particular it was found that the distribution of internal Na+ in the intact animal was such that only 17 per cent of the muscles should give from the Nernst ...
B M, JOHNSTONE, F H, SHAW, S E, SIMON
openaire   +2 more sources

An approach to nonlinear viscoelasticity via metric gradient flows [PDF]

, 2013
We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A., Ortner, C., Ortner, Christoph, Mielke, Alexander, Şengül, Yasemin   +4 more
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Edge enhancement of potential field data using the enhanced gradient (EG) filter

Bulletin of the Mineral Research and Exploration
Potential field data play a critical role in interpreting various geologic structural features through edge detection filters that aid in mapping subsurface structural features.
Ahmad Alvandi, Korimilli N Durga Prasad, Hazel Deniz Toktay   +2 more
doaj   +1 more source