Results 81 to 90 of about 1,040,831 (304)

Modeling and solution of methane jet diffusion flames

Vetor, 2010
The aim of this work is to model a jet diffusion flame, to show the corresponding proof of existence of solutions, and to present the numerical results.
Greice da Silva Lorenzzetti, Álvaro Luiz de Bortoli, Lígia Damasceno Ferreira Marczak   +2 more
doaj   +4 more sources

Design and optimization of a laser-PIXE beamline for material science applications [PDF]

, 2019
Multi-MeV proton beams can be generated by irradiating thin solid foils with ultra-intense (>10^18 W/cm^2) short laser pulses. Several of their characteristics, such as high bunch charge and short pulse duration, make them a complementary alternative ...
Antici, P., Migliorati, M., Morabito, A., Scisciò, M., Veltri, S.   +4 more
core   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Discovering chemistry to creep rupture equations in Alloy 617 with machine learning

Scientific Reports
This study seeks to discover a mathematical relationship between stress, temperature, properties, chemistry, and creep-rupture of a superalloy. This discovery will be achieved by leveraging human-supervised machine learning (ML).
Md Abir Hossain, Liangyan Hao, Wei Xiong, Calvin M. Stewart   +3 more
doaj   +1 more source

Impact of stress distribution between delta ferrite and austenite on the strain-induced martensite in AISI 304 steel

Journal of Materials Research and Technology
This study reports the influence of the fraction of δ ferrite in the austenitic stainless steel AISI 304 on strain hardening during a uniaxial tensile test. Two different steels of altered chemistry and the corresponding fractions of δ ferrite (0.5 and 7.
M. Neslušan, E. Schmidová, J. Čapek, F. Klejch, M. Krafka, S. Dobák, J. Pastorková   +6 more
doaj   +1 more source

Scale-Resolving Simulation of a Propane-Fuelled Industrial Gas Turbine Combustor Using Finite-Rate Tabulated Chemistry

Fluids, 2020
The scale-resolving simulation of a practical gas turbine combustor is performed using a partially premixed finite-rate chemistry combustion model. The combustion model assumes finite-rate chemistry by limiting the chemical reaction rate with flame speed.
Kai Zhang, Ali Ghobadian, Jamshid M. Nouri   +2 more
doaj   +1 more source

Uncovering the Mechanism of Aggregation of Human Transthyretin. [PDF]

, 2015
The tetrameric thyroxine transport protein transthyretin (TTR) forms amyloid fibrils upon dissociation and monomer unfolding. The aggregation of transthyretin has been reported as the cause of the life-threatening transthyretin amyloidosis.
Cascio, Duilio, Eisenberg, David S, Jiang, Lin, Johnson, Lisa M, Liang, Wilson Y, Riek, Roland, Ruchala, Piotr, Saelices, Lorena, Sawaya, Michael R, Whitelegge, Julian   +9 more
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Hydrodynamical simulations of the decay of high-speed molecular turbulence. I. Dense molecular regions

, 2002
We present the results from three dimensional hydrodynamical simulations of decaying high-speed turbulence in dense molecular clouds. We compare our results, which include a detailed cooling function, molecular hydrogen chemistry and a limited C and O ...
Alexander Rosen, Ballesteros-Paredes, Balsara, Blitz, Burkert, Davis, Georgi Pavlovski, Hartmann, Heitsch, Herbst, Hollenbach, Hollenbach, Katz, Klessen, Langer, Lepp, Lim, Lim, Mac Low, Mac Low, Mac Low, McKee, Michael D. Smith, Mordecai-Mark Mac Low, Neufeld, Padoan, Padoan, Passot, Smith, Smith, Smith, Stone, Stone, Stone, Sutherland, Suttner, Vázquez-Semadeni, Vázquez-Semadeni, Vázquez-Semadeni, Williams   +39 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source