Results 51 to 60 of about 1,946,177 (296)

Atmospheric pressure microwave (915 MHz) plasma for hydrogen production from steam reforming of ethanol

Scientific Reports
This work presents experimental results on the energy efficiency in hydrogen production using atmospheric microwave plasma (915 MHz) through steam reforming of ethanol. Ethanol was chosen as a liquid hydrogen carrier due to its high hydrogen atom content,
Robert Miotk, Bartosz Hrycak, Dariusz Czylkowski, Mariusz Jasiński, Mirosław Dors, Jerzy Mizeraczyk   +5 more
doaj   +1 more source

Boundary layer tripping on a transonic compressor profile

Archives of Mechanics
The numerical and experimental investigation of boundary layer tripping using steps on the suction side of a transonic compressor rotor has been presented in this paper.
A. Joseph, M. Piotrowicz, P. Flaszynski, P. Doerffer, P. Kaczynski   +4 more
doaj   +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

Role of ethanol to water ratio in hydrogen production by ethanol steam reforming in atmospheric pressure 915 MHz microwave plasma

Scientific Reports
As interest in the hydrogen economy grows, the demand for efficient, cost-effective, and sustainable hydrogen production methods increases. In response, this work focuses on developing a small-scale hydrogen production method based on ethanol steam ...
Robert Miotk, Bartosz Hrycak, Dariusz Czylkowski, Jerzy Mizeraczyk, Mirosław Dors, Mariusz Jasiński   +5 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Investigations of Marine Safety Improvements by Structural Health Monitoring Systems [PDF]

TransNav, 2012
The paper presents a first approach of the structural health monitoring (SHM) system, dedicated to marine structures. The considered system is based on the fibre optic (FO) technique with Fibre Bragg Grating (FBG) sensors.
Lech Murawski, Szymon Opoka, Katarzyna Majewska, Magdalena Mieloszyk, Wieslaw Ostachowicz, Adam Weintrit   +5 more
doaj  

SHOCK WAVE INDUCED FLOW SEPARATION CONTROL BY AIR-JET AND ROD VORTEX GENERATORS

TASK Quarterly, 2015
Flow separation control by Vortex Generators (VGs) has been analyzed over the last decades. The majority of the research concerning this technology has been focused on subsonic flows where its effectiveness for separation reduction has been proven. Less
FERNANDO TEJERO, PIOTR DOERFFER, OSKAR SZULC   +2 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer

Journal of Applied Fluid Mechanics, 2017
An experimental investigation was carried out to study the turbulent flow over a flat plate in a subsonic wind tunnel. The enhanced level of turbulence was generated by five wicker grids with square meshes, and different parameters (diameter of the grid ...
J. Grzelak, Z. Wierciński
doaj   +2 more sources

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source