Search results for "NAK"
showing 10 items of 469 documents
Kohti jälkifossiilista työtä
2021
The Cabibbo angle as a universal seed for quark and lepton mixings
2015
A model-independent ansatz to describe lepton and quark mixing in a unified way is suggested based upon the Cabibbo angle. In our framework neutrinos mix in a "Bi-Large" fashion, while the charged leptons mix as the "down-type" quarks do. In addition to the standard Wolfenstein parameters (lambda, A) two other free parameters are needed to specify the physical lepton mixing matrix. Through this simple assumption one makes specific predictions for the atmospheric angle as well as leptonic CP violation in good agreement with current observations.
Comment On The Lepton Mixing Matrix
1980
The problem of finding a suitable parametrization for a nontrivial lepton mixing matrix is considered in the framework of the ''sequential'' Weinberg-Salam theory. It is noted that in the case of n lepton generations there are in fact n+1 different theories, corresponding to different numbers m of right-handed neutrino fields present in the Lagrangian. These (n,m) models conserve CP for leptonic couplings naturally only for m=0 or 1 when n > or = 3. These models would seem to be useful as self-consistent approximations for reducing the number of parameters in the experimental analysis of lepton mixing matrices.
Alma Mater: 2014/ Vasara
2014
Andra Čudare. Studentu taisnības bruņinieks Kirils Solovjovs -- Katrīna Žukova. Zinību lauks – atmiņu laiks -- LU māju noslēpumi atklājās Muzeju naktī -- LU Preses centrs. Zinātne – tas ir forši un radoši -- Sarmīte Rutkovska. Futbols kā tikšanās vieta -- LU Zinātnes un tehnikas vēstures muzejs, LU Preses centrs. Fotostāsts. Studentu mode cauri laikiem -- Laine Dobulāne. Atjauno modernākās ērģeles Latvijā -- LU Preses centrs. Praktiķi dalās pieredzē ar topošajiem kolēģiem -- LU Preses centrs. Reportāža. Psihiskas performances un «Ātrā palīdzība» jauno grupu konkursā «Hadrons» -- LU Bibliotēka. Ciparojot šodienai un nākotnei: LU Bibliotēkas pieredze digitalizācijā -- Kārlis Dārznieks. Jau 85…
Species- and Subtype-Specific Recognition by Antibody WF6 of a Sequence Segment Forming an α-Bungarotoxin Binding Site on the Nicotinic Acetylcholine…
1992
The monoclonal antibody WF6 competes with acetylcholine and alpha-bungarotoxin (alpha-BGT) for binding to the Torpedo nicotinic acetylcholine receptor (nAChR) alpha 1 subunit. Using synthetic peptides corresponding to the complete Torpedo nAChR alpha 1 subunit, we previously mapped a continuous epitope recognized by WF6, and the prototope for alpha-BGT, to the sequence segment alpha 1(181-200). Single amino acid substitution analogs have been used as an initial approach to determine the critical amino acids for WF6 and alpha-BGT binding. In the present study, we continue our analysis of the structural features of the WF6 epitope by comparing its cross-reactivity with synthetic peptides corr…
Fenilgrupu saturošu 1,2-diolu pārgrupēšanās reakcijas skābajos jonu šķidrumos
2016
Darbā aprakstītas skābo jonu šķidrumu īpašības, uzbūve un lietošana organiskajā sintēzē. Tika apkopota literatūra par 1,2-diolu pārgrupēšanos skābā vidē un izpētīta benzpinakola un citu 1,2-diolu pārgrupēšanas reakcijas sintezētajos skābajos jonu šķidrumos. Produktu atdalīšana veikta ar kolonu hromatogrāfijas palīdzību, produktu analīzei izmantota gāzu hromatogrāfija un ūdeņraža kodolu magnētiskā rezonanse.
On the First- and Second-Order Statistics of Selective Combining over Double Nakagami-m Fading Channels
2014
El «apareamiento oral» (oris coitus) de las serpientes y su simbología en la literatura emblemática neolatina
2009
Este artículo trata del denominado «apareamiento por la boca» (oriscoitus) de las serpientes y su simbología en los libros de emblemas latinos de los siglos XVI y XVII, revisando las diferentes interpretaciones que los autores ofrecen de este ancestral argumento e identificando las fuentes (literarias y gráficas) clásicas, medievales y renacentistas. Asimismo, se establecen las curiosas imbricaciones que presenta tal metáfora con arquetipos míticos. This paper is about the so called «oral mating» (oris coitus) of the serpents and its symbolism in the books of Latin emblems of the XVIth and XVIIth century, revising the different interpretations that the authors offer of this ancient argument…
Which Dioskouroi? On some Locrian pinakes with music-themed iconography
2016
The paper considers an iconographic type attested to in a series of Locrian pinakes, showing twins on horseback (one of which has a lyra eptacorde, the other a kantharos) in front of a female figure (type 8/35: ASMG S. IV, III, 5, fig. 34); this is considered a variant of a more common type with the Dioscuri on horseback with shield and phiale accompanied by a woman (Elena, Aphrodite or nubenda?). Without prejudice to the identity of the pair of twins, it was found that the variant would intend to emphasize a particular aspect of the male world personified by the Spartan Dioscuroi, namely the paideutic role of music for the male party of the nuptial rituals (recently, summarized in A. Belli…
Il tarantismo in Sicilia
2017
Il testo prende in esame il complesso di materiali editi e inediti (fonti storiche e archivistiche, documenti musicali, testimonianze etnografiche) che attestano la presenza del tarantismo in Sicilia dalla metà del Seicento alla fine dell’Ottocento. Il caso siciliano viene quindi inquadrato nell’ambito dell’ampia letteratura che ruota intorno al fenomeno, a partire dal classico studio di Ernesto De Martino fino al dibattito sull’interpretazione del fenomeno fra i poli dell’esorcismo e della possessione, dovuto soprattutto all’etnomusicologo francese Gilber Rouget. L’analisi viene quindi estesa alla tradizione dei guaritori dei morsi di serpenti (i ciaràuli), che con il tarantismo condividon…