Zobrazeno 1 - 10
of 17 114
pro vyhledávání: '"Q Liang"'
Autor:
C. D. Nevison, Q. Liang, P. A. Newman, B. B. Stephens, G. Dutton, X. Lan, R. Commane, Y. Gonzalez, E. Kort
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 10513-10529 (2024)
The literature presents different views on how the stratosphere influences variability in surface nitrous oxide (N2O) and on whether that influence is outweighed by surface emission changes driven by the El Niño–Southern Oscillation (ENSO). These
Externí odkaz:
https://doaj.org/article/5c9af8bb1d3042569a5d87beaf4ed122
Publikováno v:
Results in Physics, Vol 56, Iss , Pp 107292- (2024)
We in this paper study the relation of hermiticity and energy spectrum for Hamiltonians consisting of SU(1,1) generators. In contrast with the common belief, the transition from real to imaginary spectra can appear at an exceptional point for the Her
Externí odkaz:
https://doaj.org/article/316f002be1434f00acfc9abcb3734fec
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 15, Iss 6, Pp 1789-1799 (2022)
In reversible pump-turbines, guide vane vibrations are considered to have potentially severe consequences of noise and structural damage. Unstable torsional mode self-excited vibrations of guide vanes have been reported at small guide vane openings d
Externí odkaz:
https://doaj.org/article/fb1c8d0372f14529ad35db1ccf489429
Publikováno v:
The Cryosphere, Vol 16, Pp 2671-2681 (2022)
The generation, transport, storage and drainage of meltwater play important roles in the Greenland Ice Sheet (GrIS) subglacial system. Active subglacial lakes, common features in Antarctica, have recently been detected beneath the GrIS and may impact
Externí odkaz:
https://doaj.org/article/b897317a93d14ceb91abbb28f6114b77
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Currently, investigations on the microbiota of sports centers and related facilities have been carried out in some countries, which showed that Microsporum gypseum, Trichophyton mentagrophytes and T. tonsurans are important dermatoprotofungi
Externí odkaz:
https://doaj.org/article/5f11df03d5ee4f85946845d9a6133f8b
Publikováno v:
Physics Open, Vol 13, Iss , Pp 100126- (2022)
In this paper we investigate time-dependent non-Hermitian Hamiltonians, which consist of SU(1,1) and SU(2) generators. The former Hamiltonian is PT symmetric but the latter one is not. A time-dependent non-unitary operator is proposed to construct th
Externí odkaz:
https://doaj.org/article/2d06ce2da6344327bf351000b53b8979
Publikováno v:
Results in Physics, Vol 40, Iss , Pp 105813- (2022)
We in this paper study the macroscopic quantum states of a PT-symmetric Non-Hermitian Hamiltonian for N quantum-dots of two imaginary-levels in an optical cavity. The eigenstate energies are obtained in terms of spin-coherent-state variational method
Externí odkaz:
https://doaj.org/article/adee4c4a1f5541f29428576fb64df724
Publikováno v:
Results in Physics, Vol 38, Iss , Pp 105561- (2022)
We study in this paper the time evolution of PT-symmetric non-Hermitian Hamiltonian consisting of periodically driven SU(1,1)generators. A non-Hermitian invariant operator is adopted to solve the Schrödinger equation, since the time-dependent Hamilt
Externí odkaz:
https://doaj.org/article/a5d04f79f56a4dd4b589020e7a21f6f8
Autor:
K. E. Knowland, C. A. Keller, P. A. Wales, K. Wargan, L. Coy, M. S. Johnson, J. Liu, R. A. Lucchesi, S. D. Eastham, E. Fleming, Q. Liang, T. Leblanc, N. J. Livesey, K. A. Walker, L. E. Ott, S. Pawson
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 14, Iss 6, Pp n/a-n/a (2022)
Abstract The NASA Goddard Earth Observing System (GEOS) Composition Forecast (GEOS‐CF) provides recent estimates and 5‐day forecasts of atmospheric composition to the public in near‐real time. To do this, the GEOS Earth system model is coupled
Externí odkaz:
https://doaj.org/article/8b0fff55845143e1b2bc5c099a915ad3
Autor:
K. V. Annammala, N. A. Mohamad, D. Sugumaran, L. S. Masilamani, Y. Q. Liang, M. H. Jamal, Z. Yusop, A. R. M. Yusoff, A. Nainar
Publikováno v:
Hydrology Research, Vol 52, Iss 1, Pp 91-106 (2021)
This study seeks to identify sediment sources, quantify erosion rates, and assess water quality status via sediment fingerprinting, the Modified Laser Erosion Bridge (MLEB) method, and various pollution indices (PIs), respectively, in the humid tropi
Externí odkaz:
https://doaj.org/article/47bd8d99e96c4d8fabb02143c68c06f8