Results 41 to 50 of about 1,312,607 (291)

Extracting the differential phase in dual atom interferometers by modulating magnetic fields

, 2016
We present a new scheme for measuring the differential phase in dual atom interferometers. The magnetic field is modulated in one interferometer, and the differential phase can be extracted without measuring the amplitude of the magnetic field by ...
Chen, Xi, Li, Da-Wei, Li, Run-Bing, Song, Hong-Wei, Wang, Jin, Wang, Yu-Ping, Zhan, Ming-Sheng, Zhong, Jia-Qi, Zhu, Lei   +8 more
core   +1 more source

Adaptive phase field simulation of quasi-static crack propagation in rocks

Underground Space, 2018
In this study, we present an adaptive phase field method (APFM) for modeling quasi-static crack propagation in rocks. Crack initiation due to positive strains is considered, and a numerical simulation is implemented using a commercial software, COMSOL ...
Shuwei Zhou, Xiaoying Zhuang
doaj   +1 more source

PIC Simulations of the Temperature Anisotropy-Driven Weibel Instability: Analyzing the perpendicular mode

, 2010
An instability driven by the thermal anisotropy of a single electron species is investigated in a 2D particle-in-cell (PIC) simulation. This instability is the one considered by Weibel and it differs from the beam driven filamentation instability.
A Stockem, Borodachev L V, Dieckmann M E, Dieckmann M E, M E Dieckmann, Medvedev M V, Palodhi L, Pétri J, R Schlickeiser, Rowlands G, Schlickeiser R, Silva L O, Stockem A, Stockem A   +13 more
core   +1 more source

Phase-field simulation of nano-α′ precipitates under irradiation and dislocations

Journal of Materials Research and Technology, 2023
This is the first investigation on the micromorphology and kinetics evolution of Cr-rich α′ precipitates under Cr composition, irradiation and dislocation with the three-dimensional phase-field simulation.
Wenkui Yang, Xinan Jiang, Xiaolin Tian, Hua Hou, Yuhong Zhao   +4 more
doaj   +1 more source

Controlled spontaneous emission

, 2007
The problem of spontaneous emission is studied by a direct computer simulation of the dynamics of a combined system: atom + radiation field. The parameters of the discrete finite model, including up to 20k field oscillators, have been optimized by a ...
A K Khitrin, Braginsky V B, Breuer H-P, Craig D P, Jae-Seung Lee, Jaynes F W, Mary A Rohrdanz, Nielsen M A, Sansonetti J E, Vedral V   +9 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Phase Field Simulation of Al-Fe-Mn-Si Quaternary Eutectic Solidification

Metals
This study investigates the eutectic equilibrium phases in a multicomponent system through 3-D multi-phase-field simulations. Emphasizing the directional solidification process, the work examines the growth dynamics of intermetallic phase Al13Fe4, a ...
Kimiya NouraniNiaki, Murali Uddagiri, Daysianne Isidorio, Oleg Shchyglo, Ingo Steinbach   +4 more
doaj   +1 more source

Comparative analysis of different numerical schemes in solute trapping simulations by using the phase-field model with finite interface dissipation [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2016
Two different numerical schemes, the standard explicit scheme and the time-elimination relaxation one, in the framework of phase-field model with finite interface dissipation were employed to investigate the solute trapping effect in a Si-4.5 at.
Yang X., Tang Y., Cai D., Zhang L., Du Y., Zhou S.   +5 more
doaj   +1 more source

Topological Defects in the Random-Field XY Model and the Pinned Vortex Lattice to Vortex Glass Transition in Type-II Superconductors

, 1996
As a simplified model of randomly pinned vortex lattices or charge-density waves, we study the random-field XY model on square ($d=2$) and simple cubic ($d=3$) lattices.
A. E. Koshelev, A. Fukuyama, A.I. Larkin, A.I. Larkin, B. Khaykovich, C. Bernhard, D. Cule, D. W. Braun, D.A. Huse, D.A. Huse, David A. Huse, E. Zeldov, G. Blatter, G.G. Batrouni, G.S. Iannacchione, H. Obara, H. Pastoriza, H. Rieger, H. Safar, H. Safar, H.J. Jensen, H.S. Bokil, J. Villain, J.A. Fendrich, J.D. Reger, J.M. Kosterlitz, K. Biljakovíc, L. Balents, L.J. Glazman, M. Guo, M.J.P. Gingras, M.P.A. Fisher, Michel J. P. Gingras, P.A. Lee, R. Cubitt, R. Fisch, R. Fisch, R. Fisch, R. Fisch, R. Fisch, R. Gupta, R. Liang, S. Bhattacharya, S.R. Lee, T. Giamarchi, T. Giamarchi, T. Giamarchi, T. Nattermann, T.K. Worthington, Y. Imry, Y.H. Li   +50 more
core   +1 more source