Forbidden transition probabilities of astrophysical interest among low-lying states of V III     

Andrei Irimia 《Journal of Astrophysics and Astronomy》2007,28(2-3):157-166

Electric and magnetic multipole transitions among low-lying states of doubly ionized vanadium were computed using the multi-configuration Hartree-Fock (MCHF) method with Breit-Pauli (BP) corrections to a non-relativistic Hamiltonian. Energy levels were determined up to and including 3d ²(¹ G)4s b ² G _7/2 and computed energies were found to be in good agreement with experiment and other theories. In addition to Einstein A _ki coefficients for some E2 and M1 transitions, lifetime data and selected weighted oscillator strengths are also reported.  相似文献   

Shifts in climate suitability for wine production as a result of climate change in a temperate climate wine region of Romania     

Liviu?Mihai?Irimia  Cristian?Valeriu?PatricheEmail author  Hervé?Quenol  Lucian?Sf?c?  Chris?Foss 《Theoretical and Applied Climatology》2018,131(3-4):1069-1081

Climate change is causing important shifts in the suitability of regions for wine production. Fine scale mapping of these shifts helps us to understand the evolution of vineyard climates, and to find solutions through viticultural adaptation. The aim of this study is to identify and map the structural and spatial shifts that occurred in the climatic suitability for wine production of the Cotnari wine growing region (Romania) between 1961 and 2013. Discontinuities in trends of temperature were identified, and the averages and trends of 13 climatic parameters for the 1961 to 1980 and 1981 to 2013 time periods were analysed. Using the averages of these climatic parameters, climate suitability for wine production was calculated at a resolution of 30 m and mapped for each time period, and the changes analysed. The results indicate shifts in the area’s historic climatic profile, due to an increase of heliothermal resources and precipitation constancy. The area’s climate suitability for wine production was modified by the loss of climate suitability for white table wines, sparkling wines and wine for distillates; shifts in suitability to higher altitudes by about 67 m, and a 48.6% decrease in the area suitable for quality white wines; and the occurrence of suitable climates for red wines at lower altitudes. The study showed that climate suitability for wine production has a multi-level spatial structure, with classes requiring a cooler climate being located at a higher altitude than those requiring a warmer climate. Climate change has therefore resulted in the shift of climate suitability classes for wine production to higher altitudes.  相似文献   

Mapping the impact of recent climate change on viticultural potential in Romania     

Patriche  Cristian Valeriu  Irimia  Liviu Mihai 《Theoretical and Applied Climatology》2022,148(3-4):1035-1056

Theoretical and Applied Climatology - Climate change affects the viticulture sector worldwide in different ways, some countries reporting negative impacts, other positive effects, depending on the...  相似文献   

European cold wave during February 2012 and impacts in wine growing regions of Moldavia (Romania)   总被引：1，自引：0，他引：1  

Olivier Planchon  Hervé Quénol  Liviu Irimia  Cristi Patriche 《Theoretical and Applied Climatology》2015,120(3-4):469-478

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