Varandas, António

Loading... 2 0 20 0 false
 
Credit Name
Varandas, António
 
Name
Varandas, A. J. C.
 
Variants
Varandas, António J. C.
Varandas, A.
 
 
Email
varandas@uc.pt
 
 
Scopus Author ID
 
Status
UC Researcher
Loading... 3 0 20 0 false

Publications
(All)

Refined By:
Date Issued:  [2000 TO 2024]

Results 1-88 of 88 (Search time: 0.002 seconds).

Issue DateTitleAuthor(s)TypeAccess
11-Sep-2008An ab initio study of the interaction between He and C36 with extrapolation to the one electron basis set limitVarandas, A. J. C. articleopenAccess
22001Ab initio theoretical calculation and potential energy surface for ground-state HO3Yu, H. G. ; Varandas, A. J. C. articleopenAccess
32006Accurate DMBE Potential Energy Surface For the N(2D) + H2(1S g+ ) Reaction Using an Improved Switching Function FormalismVarandas, A. ; Poveda, L. articleopenAccess
423-Apr-2009Accurate Double Many-Body Expansion Potential Energy Surface for the Lowest Singlet State of MethyleneJoseph, S. ; Varandas, A. J. C. articleopenAccess
52007Accurate global ab initio potentials at low-cost by correlation scaling and extrapolation to the one-electron basis set limitVarandas, A. J. C. articleopenAccess
62006Accurate MRCI study of ground-state N2H2 potential energy surfaceBiczysko, M. ; Poveda, L. A. ; Varandas, A. J. C. articleopenAccess
72012Accurate Potential Energy Surfaces and Beyond: Chemical Reactivity, Binding, Long-Range Interactions, and SpectroscopyBytautas, Laimutis; Bowman, Joel M.; Huang, Xinchuan; Varandas, António J. C. articleopenAccess
82-Oct-2003Accurate Single-Valued Double Many-Body Expansion Potential Energy Surface for Ground-State HN2Poveda, L. A. ; Varandas, A. J. C. articleopenAccess
92008Application of renormalized coupled-cluster methods to potential function of waterPiecuch, Piotr ; Wloch, Marta ; Varandas, António J. C. articleopenAccess
105-Feb-2004Are Vibrationally Excited Molecules a Clue for the “O3 Deficit Problem” and “HOx Dilemma” in the Middle Atmosphere?Varandas, A. J. C. articleopenAccess
1131-May-2001Calculation of the Rovibrational Partition Function Using Classical Methods with Quantum CorrectionsPrudente, Frederico V. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
122008Can extrapolation to the basis set limit be an alternative to the counterpoise correction? A study on the helium dimerVarandas, A. articleopenAccess
1315-Jun-2023Carbon-[n]Triangulenes and Sila-[n]Triangulenes: Which Are Planar?Varandas, A. J. C. articleopenAccess
142003Cone states of tri-hydrogen isotopomers and criterion for the geometric phase effectVarandas, A. J. C. ; Viegas, L. P. articleopenAccess
152000Dinâmica reaccional de sistemas triatómicos e tetratómicos com relevância em química da atmosfera.Wang, Wenli doctoralThesisembargoedAccess
1627-Jun-2002A Direct Evaluation of the Partition Function and Thermodynamic Data for Water at High TemperaturesPrudente, Frederico V. ; Varandas, António J. C. articleopenAccess
177-Mar-2012Double Many-Body Expansion Potencial Energy Surfaces for NHx (x=2,3) SystemsYong Qing Li doctoralThesisopenAccess
186-Dec-2007Double many-body expansion potential energy surfaces for nitrogen-hydrogen molecular systemsPoveda Calviño, Luis Argel doctoralThesisopenAccess
192008Dynamics and kinetics of the S + HO2 reaction: A theoretical studyBallester, M. Y. ; Varandas, A. J. C. articleopenAccess
2022-Apr-2004Dynamics Study of the N(4S) + O2 Reaction and Its ReverseCaridade, P. J. B. S. ; Varandas, A. J. C. articleopenAccess
2114-Oct-2004Dynamics Study of the O + HO2 Reaction Using Two DMBE Potential Energy Surfaces: The Role of Vibrational ExcitationSilveira, Dora M. ; Caridade, Pedro J. S. B. ; Varandas, António J. C. articleopenAccess
2212-Dec-2002Dynamics Study of the O2 + HO2 Atmospheric Reaction with Both Reactants Highly Vibrationally ExcitedZhang, L. ; Varandas, A. J. C. articleopenAccess
2315-Nov-2001Dynamics Study of the O2(v) + HO2 Atmospheric ReactionZhang, Lei ; Varandas, António J. C. articleopenAccess
2410-May-2001Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 2. Influence of Reactants Internal Energy in HO2 and O3 FormationCaridade, P. J. S. B. ; Zhang, L. ; Garrido, J. D. ; Varandas, A. J. C. articleopenAccess
259-Aug-2001Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 3. Dissociation in Collisions of Vibrationally Excited ReactantsCaridade, P. J. S. B. ; Betancourt, M. ; Garrido, J. D. ; Varandas, A. J. C. articleopenAccess
2630-May-2002Dynamics Study of the OH + O2 Branching Atmospheric Reaction. 4. Influence of Vibrational Relaxation in Collisions Involving Highly Excited SpeciesGarrido, J. D. ; Caridade, P. J. S. B. ; Varandas, A. J. C. articleopenAccess
2728-Dec-2006Dynamics Study of the OH + O3 Atmospheric Reaction with Both Reactants Vibrationally ExcitedZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Varandas, António J. C. articleopenAccess
2817-Jul-2003Dynamics Study of the Reaction S + O2 → SO + O and Its Reverse on a Single-Valued Double Many-Body Expansion Potential Energy Surface for Ground-State SO2Rodrigues, S. P. J. ; Varandas, A. J. C. articleopenAccess
292002Existence of strictly diabatic basis sets for the two-state problemKryachko, Eugene S. ; Varandas, António J. C. articleopenAccess
302006Extrapolating potential energy surfaces by scaling electron correlation at a single geometryVarandas, A. J. C. ; Piecuch, P. articleopenAccess
3116-Oct-2008Extrapolating to the One-Electron Basis Set Limit in Polarizability CalculationsJunqueira, G. M. A. ; Varandas, A. J. C. articleopenAccess
325-May-2000First principles calculation of the potential energy surface for the lowest-quartet state of H3 and modelling by the double many-body expansion methodAbreu, P. E. ; Varandas, A. J. C. articleopenAccess
332003Forbidden transitions in benzeneBorges, I. ; Varandas, A. J. C. ; Rocha, A. B. ; Bielschowsky, C. E. articleopenAccess
3428-Feb-2008Generalized Uniform Singlet- and Triplet-Pair Extrapolation of the Correlation Energy to the One Electron Basis Set LimitVarandas, A. J. C. articleopenAccess
352004Geometric phase effect at N-fold electronic degeneracies in Jahn-Teller systemsVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
3618-Oct-2007HN2(2A‘) Electronic Manifold. I. A Global ab Initio Study of First Two StatesMota, Vinícius C. ; Varandas, António J. C. articleopenAccess
3724-Apr-2008HN2(2A‘) Electronic Manifold. II. Ab Initio Based Double-Sheeted DMBE Potential Energy Surface via a Global Diabatization AngleMota, Vinícius C. ; Varandas, António J. C. articleopenAccess
382013Implications of the O + OH reaction in hydroxyl nightglow modelingCaridade, P. J. S. B. ; Horta, J.-Z. J. ; Varandas, A. J. C. articleopenAccess
392000Is there a barrier for the C2v insertion reaction in O(1D)+H2? A test dynamics study based on two-valued energy-switching potential energy surfacesVarandas, A. J. C. ; Voronin, A. I. ; Caridade, P. J. S. B. ; Riganelli, A. articleopenAccess
402007Kinetics and dynamics of O + OClO reaction in a modified many-body expansion potential energy surface for ClO3Teixeira, O. B. M. ; Marques, J. M. C. ; Varandas, A. J. C. articleopenAccess
4118-Apr-2002Li + Li2 Dissociation Reaction Using the Self-Consistent Potential and Trajectory Surface Hopping MethodsMarques, J. M. C. ; Voronin, A. I. ; Varandas, A. J. C. articleopenAccess
422013Manifestation of external field effect in time-resolved photo-dissociation dynamics of LiFMeng, Qing-Tian ; Varandas, A. J. C. articleopenAccess
432003O método das trajectórias clássicas: colisões coplanares do tipo A+BCMarques, Jorge M. C. ; Riganelli, Antonio ; Varandas, António J. C. articleopenAccess
4420-Jul-2000MRCI Calculation, Scaling of the External Correlation, and Modeling of Potential Energy Curves for HCl and OClPeña-Gallego, A. ; Abreu, P. E. ; Varandas, A. J. C. articleopenAccess
452008Møller-Plesset perturbation energies and distances for HeC20extrapolated to the complete basis set limitVarandas, A. J. C. articleopenAccess
4618-Dec-2003Nascent versus “Steady-State” Rovibrational Distributions in the Products of the O(3P) + O3(1A) ReactionCaridade, P. J. S. B. ; Llanio-Trujillo, J. L. ; Varandas, A. J. C. articleopenAccess
4719-Jan-2006New Double Many-Body Expansion Potential Energy Surface for Ground-State HCN from a Multiproperty Fit to Accurate ab Initio Energies and Rovibrational CalculationsVarandas, A. J. C. ; Rodrigues, S. P. J. articleopenAccess
482005A novel accurate representation of a double-valued potential energy surface by the DMBE method. Application to triplet H3+(a3E')Varandas, António J. C. ; Alijah, Alexander ; Cernei, Mihail articleopenAccess
492001Nuclear dynamics in the vicinity of a crossing seam: Vibrational spectrum of HD2 revisitedXu, Z. R. ; Varandas, A. J. C. articleopenAccess
502001Nuclear Dynamics in the Vicinity of Crossing Seam: Vibrational Spectra of X3 Systems.Xu, Zong Rong doctoralThesisembargoedAccess
512001OH(v)+O3: Does chemical reaction dominate over non-reactive quenching?Varandas, A. J. C. ; Zhang, L. articleopenAccess
522000On the behavior of single-surface nuclear wavefunctions in the vicinity of the conical intersection for an X3 systemVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
532000On the interaction of two conical intersections: the H6 systemVarandas, A. J. C. ; Voronin, A. I. ; Borges, I. articleopenAccess
5418-Oct-2001On the Rovibrational Partition Function of Molecular Hydrogen at High TemperaturesRiganelli, Antonio ; Prudente, Frederico V. ; Varandas, António J. C. articleopenAccess
552002On triplet tetraoxygen: ab initio study along minimum energy path and global modellingVarandas, A. J. C. ; Llanio-Trujillo, J. L. articleopenAccess
5628-Aug-2014Photoinduced coupled twisted intramolecular charge transfer and excited-state proton transfer via intermolecular hydrogen bonding: a DFT/TD-DFT studyWang, Dandan ; Lü, Rui ; Yuan, Minghu ; Chen, Junsheng ; Feng, Liqiang ; Fu, Aiping ; Tian, Fenghui ; Varandas, António J. C. ; Chu, Tianshu articleopenAccess
572009Potential Energy Surface for Ground-State H2S via Scaling of the External Correlation, Comparison with Extrapolation to Complete Basis Set Limit, and Use in Reaction DynamicsSong, Y. Z. ; Caridade, P. J. S. B. ; Varandas, A. J. C. articleopenAccess
582012Potential energy surfaces and dynamics of atmospheric reactionsGalvão, Breno Rodrigues Lamaghere doctoralThesisopenAccess
592-Apr-2018Potential Energy Surfaces of Elemental Carbon ClustersRocha, Carlos Murilo Romero doctoralThesisopenAccess
6014-Sep-2006Predicting Catalysis: Understanding Ammonia Synthesis from First-Principles CalculationsHellman, A. ; Baerends, E. J. ; Biczysko, M. ; Bligaard, T. ; Christensen, C. H. ; Clary, D. C. ; Dahl, S. ; Harrevelt, R. van ; Honkala, K. ; Jonsson, H. ; Kroes, G. J. ; Luppi, M. ; Manthe, U. ; Nørskov, J. K. ; Olsen, R. A. ; Rossmeisl, J. ; Skúlason, E. ; Tautermann, C. S. ; Varandas, A. J. C. ; Vincent, J. K. articleopenAccess
612006A Quantum Wave Packet Dynamics Study of the N(2D) + H2 ReactionChu, Tian-Shu ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
622004A reacção OH+O2 como fonte de ozono na atmosfera : efeito de excitação vibracionalCaridade, Pedro Jorge dos Santos Branco doctoralThesisembargoedAccess
632002A realistic double many-body expansion potential energy surface for from a multiproperty fit to accurate ab initio energies and vibrational levelsVarandas, A. J. C. ; Rodrigues, S. P. J. articleopenAccess
6422-Feb-2007Recalibrated Double Many-Body Expansion Potential Energy Surface and Dynamics Calculations for HN2Caridade, P. J. S. B. ; Poveda, L. A. ; Rodrigues, S. P. J. ; Varandas, A. J. C. articleopenAccess
6527-Apr-2006Ro-Vibrational States of Triplet H2DAlijah, Alexander ; Varandas, António J. C. articleopenAccess
662013Roadmap to spline-fitting potentials in high dimensionsPatrício, M. ; Santos, J. L. ; Patrício, F. ; Varandas, A. J. C. articleopenAccess
6721-Jun-2001Single-Valued DMBE Potential Energy Surface for HSO: A Distributed n-Body Polynomial ApproachMartínez-Núñez, E. ; Varandas, A. J. C. articleopenAccess
6824-Jan-2002Single-Valued Double Many-Body Expansion Potential Energy Surface of Ground-State SO2Rodrigues, S. P. J. ; Sabín, J. A. ; Varandas, A. J. C. articleopenAccess
692000Singularities in the Hamiltonian at electronic degeneraciesVarandas, A. J. C. ; Xu, Z. R. articleopenAccess
7010-Oct-2002Six-Dimensional Energy-Switching Potential Energy Surface for HeHCNAnsari, Wazir-ul H. ; Varandas, António J. C. articleopenAccess
7115-May-2003Steady-State Distributions of O2 and OH in the High Atmosphere and Implications in the Ozone ChemistryVarandas, A. J. C. articleopenAccess
722000Superfícies de energia potencial, propriedades eléctricas, espetroscopia e reactividade de sistemas moleculares.Rodrigues, Sérgio Paulo Jorge doctoralThesisembargoedAccess
732000Test studies on the potential energy surface and rate constant for the OH+O3 atmospheric reactionVarandas, A. J. C. ; Zhang, L. articleopenAccess
742013The coupled 3D wave packet approach for triatomic reactive scattering in hyperspherical coordinatesAdhikari, Satrajit ; Varandas, António J.C. articleopenAccess
752003Theoretical studies of unimolecular and bimolecular reactions: from electronic structure to dynamics.Trujillo, Jorge Luís Llanio doctoralThesisembargoedAccess
762003Theoretical studies on five -atom atmospheric reactions : OH(v) + O3, and its reverse.Zhang, Lei doctoralThesisembargoedAccess
7718-Dec-2014Theoretical studies on the low-lying electronic states of N2O: From structural aspects to reaction dynamicsLi, Jing doctoralThesisopenAccess
787-Feb-2008A Theoretical Study of Rate Coefficients for the O + NO Vibrational RelaxationCaridade, P. J. S. B. ; Mota, V. C. ; Mohallem, J. R. ; Varandas, A. J. C. articleopenAccess
7928-Jul-2008A theoretical study on the HSO2 molecular systemFurones, Maikel Yusat Ballester doctoralThesisopenAccess
802007Trajectory binning scheme and non-active treatment of zero-point energy leakage in quasi-classical dynamicsVarandas, A. J. C. articleopenAccess
8117-Mar-2005Unimolecular and Bimolecular Calculations for HN2Caridade, P. J. S. B. ; Rodrigues, S. P. J. ; Sousa, F. ; Varandas, A. J. C. articleopenAccess
822007Variational transition-state theory study of the atmospheric reaction OH + O3 → HO2+ O 2Ju, Li-Ping ; Han, Ke-Li ; Varandas, António J. C. articleopenAccess
8322-Mar-2001Vibrational Calculations for the HD2 First-Excited Electronic State Using a Coordinate-Transformation TechniqueXu, Z. R. ; Varandas, A. J. C. articleopenAccess
849-Jul-2013Vibrational Energy Transfer in N(D-2) + N-2 Collisions: A Quasiclassical Trajectory StudyGalvão, B. R. L. ; Varandas, A. J. C. ; Braga, J. P. ; Belchior, J. C. articleopenAccess
852005Vibrational relaxation of highly excited HO2 in collisions with O2Varandas, A. J. C. ; Zhang, L. articleopenAccess
862008Vibrational Relaxation of Highly Vibrationally Excited O3 in Collisions with OHZhang, Lei ; Luo, Pingya ; Huang, Zhiyu ; Chen, Hong ; Varandas, António J. C. articleopenAccess
8725-Apr-2002A VTST Study of the H + O3 and O + HO2 Reactions Using a Six-dimensional DMBE Potential Energy Surface for Ground State HO3Fernández-Ramos, A. ; Varandas, A. J. C. articleopenAccess
882005What are the Implications of Nonequilibrium in the O+OH and O+HO2 Reactions?Varandas, A. J. C. articleopenAccess