1,721,012 research outputs found
<Book Review>Japanese linguistics, The Japanese language I
Full text linkOrlandi Giorgio (Georg). Japanese linguistics, The Japanese language I. Journal of Japanese Linguistics, 36, 2, 311. https://doi.org/10.1515/jjl-2020-2029
On the classification of the Ng Yap dialects: some thoughts on the subgrouping of Sinitic languages
No full textOrlandi Giorgio. On the classification of the Ng Yap dialects: some thoughts on the subgrouping of Sinitic languages / Giorgio Orlandi// Вопросы языкового родства. - 2019. - № 2 (17). - С. 128-152
Evaluating the Sino-Tibeto-Austronesian Hypothesis
Full text linkOrlandi Giorgio. Evaluating the Sino-Tibeto-Austronesian Hypothesis. Journal of Language Relationship, 16, 1-2, 1. https://doi.org/10.31826/jlr-2018-161-204.This paper analyses and evaluates the alleged genetic relationship between Sino-Tibetan and Austronesian, proposed by the French sinologist Laurent Sagart. The aim of the following paper is neither to prove, nor to disprove the Sino-Tibeto-Austronesian superphylum but to argue whether the data presented in favour of this proposed genetic relationship do or do not stand the scrutiny of a historical linguist. This paper also considers the hypothetical homeland of Proto-Sino-Tibeto-Austronesian people, with an eye towards competing hy-potheses, such as Sino-Indo-European. It is concluded that Sagart’s approach may be insuffi-cient for proof of controversial cases of disputed genetic relationship, given the non-obvious relatedness of the languages he is comparing
On the classification of the Ng Yap dialects: some thoughts on the subgrouping of Sinitic languages
Full text linkOrlandi Giorgio.. On the classification of the Ng Yap dialects: some thoughts on the subgrouping of Sinitic languages. Journal of Language Relationship, 17, 1-2, 128. https://doi.org/10.31826/jlr-2019-171-212.The Ng Yap (formerly Sze Yap) dialects are routinely considered a branch of the Yue subfamily. This paper seeks to demonstrate that, contrary to this widespread opinion, these dialects show a wide range of distinctive features which, for formal purposes of language/dialect classification, may warrant their separation from the Yue subfamily. This paper also discusses the criteria which are often at the basis of language subgrouping in the field of Chinese linguistics. Nevertheless, this work should be regarded only as an attempt of stimulating a further discussion into a topic which has been overlooked for far too long
Azobenzene cis-trans Photoisomerization Mechanism: Characterization of the Decay Ways from the Lowest pipi* Absorbing Singlet State
No full textIn this paper, we analyze the photoisomerization processes of azobenzene after its excitation in the bright S(ππ*). By state of the art/ ab initio / Complete Active Space calculations followed by perturbative corrections (CASPT2//CASSCF) we have identified the critical structures, the Minimum Energy Paths originating on the bright S(ππ*) and on other relevant excited states including the state S1(nπ*). The seams of conical intersections that are important in guiding the photoreaction are determined. We aim at establishing the mechanism of decay and of photoisomerization for the S(ππ*) state and at explaining the difference between the quantum yields found for the two lowest energy S1(nπ*) and S(ππ*) excited states. We found that an excited state based on the πN = NπN = N→π*N = Nπ*N = N configuration is a photoreaction intermediate that plays a very important role in the decay the bright S(ππ*). This doubly excited state, by driving the photoisomerization along the torsion path and by inducing a fast internal conversion to the S1(nπ*) occurring in a variety of geometries, explains all the most important features of the S(ππ*) azobenzene photoisomerization
Le modifiche in materia di misure interdittive: il divieto temporaneo di contrattare con la pubblica amministrazione
No full textIl saggio esamina la neointrodotta misura cautelare interdittiva del divieto temporaneo di contrattare con la pubblica amministrazione, trattandone l'esame alla luce dell'evoluzione normativa della disciplina cautelare personale e delle sanzioni accessorie
An ab initio Study of Decay Mechanism of Adenine: the Facile Path of the Amino NH Bond Cleavage
No full textA comprehensive study of the radiationless decay processes of the lowest excited singlet states in the isolated 9H‐Adenine has been performed at the CASPT2//CASSCF level. The minimum energy paths of the La, Lb and nπ* singlet states along different skeletal distortions have been computed and the Conical Intersections (CIs) involving these states have been determined. The fast deactivation path of La along a skeletal deformation, which leads to a S0/La CI, as previously discussed, is confirmed. Moreover, low‐lying CIs between S0 and πσ* singlet states have been characterized, where σ* is the antibonding orbital localized on a N‐H bond of the amino (πσNH2*) or of the azine group (πσN9H*). We have found that the repulsive πσNH2* state associated with an amino N‐H bond can be populated through a barrierless way. Therefore, the decay path shows a bifurcation leading to two possible ways of radiationless deactivation: on one hand a non‐photochemical decay through the S0/La or S0/nπ* CIs and on the other hand a photochemical process via the possible access to the S0/πσNH2* CI that produces N‐H cleavage. In this way, we can explain the H atom loss found upon UV excitation. We have considered also the decay of higher energy bright states. We have found that these states can decay also by converting to the repulsive πσN9H* state associated with the azine NH bond. This new channel suggests an increase of H‐atom photoproduction yield by excitating Adenine with lower wavelength radiations. The study of the decay processes of an Adenine molecule in the double strand d(A)10⋅d(T)10 in water solvent is currently underway: Adenine is treated by the Quantum Mechanical (QM) approach and the remaining molecules are described at the Molecular Mechanics (MM) level. We use the COBRAMM program that is a tunable QM/MM approach to complex molecular architectures developed by our research group
Analysis of the vibronic structure of the: Trans -stilbene fluorescence and excitation spectra: The S0 and S1 PES along the CeCe and Ce-Cph torsions
No full textWe analyze the highly resolved vibronic structure of the low energy (â¤200 cm-1) region of the fluorescence and fluorescence excitation spectra of trans-stilbene in supersonic beams. In this spectral region the vibronic structure is associated mainly with vibrational levels of the Ce-Ce torsion (Ï) and the au combination of the two Ce-Cph bond twisting (Ï). We base this analysis on the well-established S0(Ï, Ï) two-dimensional potential energy surface (PES) and on a newly refined S1(Ï, Ï) PES. We obtain vibrational eigenvalues and eigenvectors of the anharmonic S0(Ï, Ï) and S1(Ï, Ï) PES using a numerical procedure based on the Meyer's flexible model [R. Meyer, J. Mol. Spectrosc., 1979, 76, 266]. Then we derive Franck-Condon factors and therefore intensities of the relevant vibronic bands for the S0 â S1 excitation and S1 â S0 fluorescence spectra. Furthermore, we assess the role of the bg combination of the two Ce-Cph bond twisting (Î1⁄248) in the structure of the S1 â S0 fluorescence spectra. By the use of these results we are able to assign most of the low energy vibrational levels of the S0 â S1 excitation spectra and of the fluorescence spectra of the emission from several low energy S1 vibronic levels. The good agreement between the observed and the computed vibrational structure of the S0 â S1 and S1 â S0 spectra suggests that the proposed picture of the E1(Ï, Ï) and E0(Ï, Ï) PES, in particular along the coordinate Ï governing trans-cis photo-isomerization in S1, is accurate. In S0, the barriers for the CeCe torsion and for the au type Ce-Cph bond twisting are 16:080 cm-1 and 3125 cm-1, respectively, while in S1, where the bond orders of the CeCe and Ce-Cph bonds are reversed, the two barriers become 1350 cm-1 and 8780 cm-1, respectively
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