Search results for "Uses"
showing 10 items of 1614 documents
Influence of double infections on the induction of thymidine kinase by UV-irradiated herpes simplex virus types 1 and 2 and pseudorabies virus
1975
Simultaneous infection of primary rabbit kidney cells with HSV type 1 TK+ and a TK- strain results in a mutual influence of both viruses on the induction of thymidine kinase (TK). TK+ virus has an enhancing and TK- virus a depressing effect on TK induction by a superinfecting TK+ virus. The enzyme induction depends on the ratio of multiplicities of both viruses. The mutual influence on TK induction depends further on the time of addition of the superinfecting virus: the effect of the second virus can still be observed when given 6 hours after primary infection. Identical phenomena can be observed using combinations with HSV type 2 or Pseudorabies viruses. The ability of HSV to induce TK is …
Dziedonis [vēsture]: versija 2014-12-29
2014
Skatāms bagātīgs materiāls par vīru kora "Dziedonis" vēsturi laika periodos no 1924.-1955.; 1956.-1972.; 1973.-1976.; 1977.-1980.; 1981.-1990.; 1991.-2002.; 2003.-2014. Sniegtas ziņas par kora tapšanu, darbību, kolektīvu, tā vadību un piederību. No 1950.-1953. g. koris bija Latvijas Valsts universitātes vīru koris. Ar Latvijas Universitātes Senāta lēmumu (30.05.2005), atbalstot kora iesniegumu, atjaunota kora piederība Latvijas Universitātei. Vēsture pētāma, iepazīstot dokumentus, koncertprogrammas, recenzijas, fotogrāfijas.
Giustizia ambientale e recupero delle aree verdi: il caso di Palermo
2021
L’urban shrinkage è diventata una questione centrale tanto nel dibattito scientifico quanto nell’agenda politica di diverse città europee. Secondo i dati EUROSTAT (2019), circa il 40% delle città europee con più di 200.000 abitanti stanno perdendo popolazione; una contrazione che si esplicita maggiormente, sotto il profilo spaziale, in una progressiva sottoutilizzazione del patrimonio edificato, così come nel contestuale incremento di aree e terreni in stato di abbandono. In questo quadro controverso di mutazione strutturale della città, così come l’abbiamo conosciuta, le politiche urbane alla prova in Europa tentano di declinare la decrescita quale occasione strategica di investimento sull…
PRATIQUES INFO-COMMUNICATIONNELLES ET MOBILISATION SOCIALE À L'ÈRE D'INTERNET : LE CAS DE L'ITALIE
2013
Ce travail de recherche porte sur le rôle des pratiques info-communicationnelles de l'Internet dans la constitution, le développement et la mobilisation des nouveaux groupes contestataires en Italie. Avec cette approche, nous souhaitons porter notre attention sur les pratiques humaines et non pas sur les réseaux informationnels, considérés trop souvent comme le moteur déterminant du changement social. Ainsi, bien que l'essor d'Internet n'ait pas impliqué le passage à une forme de société plus émancipée, la création d'espaces informationnels indépendants représente néanmoins un enjeu politique important. L'enquête de terrain est structurée en deux volets, l'un portant sur l'analyse de la mob…
Fractional-order theory of thermoelasticicty. I: Generalization of the Fourier equation
2018
The paper deals with the generalization of Fourier-type relations in the context of fractional-order calculus. The instantaneous temperature-flux equation of the Fourier-type diffusion is generalized, introducing a self-similar, fractal-type mass clustering at the micro scale. In this setting, the resulting conduction equation at the macro scale yields a Caputo's fractional derivative with order [0,1] of temperature gradient that generalizes the Fourier conduction equation. The order of the fractional-derivative has been related to the fractal assembly of the microstructure and some preliminary observations about the thermodynamical restrictions of the coefficients and the state functions r…
Starptautisku lielpasākumu ekonomiskās ietekmes novērtēšana.
2016
Starptautisku liepasākumu norise rada dažāda veida ietekmi vietējā, reģionāla un nacionālā līmenī, tostarp ekonomisko ietekmi, kuras novērtēšanas tradīcija pasaulē izveidota jau pagājušajā gadsimtā, bet Latvijā kļuvusi aktuāla vien pēdējos gados. Darba mērķis ir pētīt un apkopot informāciju par starptautiskiem lielpasākumiem, to radīto ietekmi un ekonomiskās ietekmes novērtēšanas metodēm, kā arī izstrādāt priekšlikumus lielpasākumu novērtēšanā un norisē ieinteresētajām pusēm. Bakalaura darba izstrādes rezultātā tika noskaidroti galvenie ieguvumi un ekonomiskā ietekme, ko rada starptautisku lielpasākumu norise Latvijā, kā arī to novērtēšanas iespējas. Bakalaura darbs sastāv no ievada, 3 noda…
Élaboration du plan de gestion de l’espace naturel sensible des versants de Vuillafans et Châteauvieux-les-Fossés
2014
The value of the “Espace Naturel Sensible des versants de Châteauvieux et Vuillafans” is based on a natural habitats mosaic that support an originality and a diversity of flora and entomological that we want to preserve. However, in dry grasslands which are habitats of the European community, we can see gradually the emergence of shrub and reforestation due to the difficult to mechanize hills and very fragmented private lands that favored the abandonment of agricultural practices on the slopes. To efficiently program the management of this area, a management plan, which is now a recognize tools for managers of natural areas, was written. To achieve the management plan objectives, the privat…
Calcium-dependent conformational changes of membrane-bound Ebola fusion peptide drive vesicle fusion
2003
AbstractThe fusogenic subdomain of the Ebola virus envelope glycoprotein is an internal sequence located ca. 20 residues downstream the N-terminus of the glycoprotein transmembrane subunit. Partitioning of the Ebola fusion peptide into membranes containing phosphatidylinositol in the absence of Ca2+ stabilizes an α-helical conformation, and gives rise to vesicle efflux but not vesicle fusion. In the presence of millimolar Ca2+ the membrane-bound peptide adopts an extended β-structure, and induces inter-vesicle mixing of lipids. The peptide conformational polymorphism may be related to the flexibility of the virus–cell intermembrane fusogenic complex.
Spread of tomato yellow leaf curl virus in Sicily: partial displacement of another geminivirus originally present.
2006
The geminivirus Tomato yellow leaf curl virus (TYLCV) was reported for the first time in Italy in 2002. We have followed its spread in Sicily, where Tomato yellow leaf curl Sardinia virus (TYLCSV), another tomato-infecting geminivirus, is endemic and has been causing severe crop losses since 1989. The presence of the two viruses was monitored in the main tomato growing area, the Ragusa province, analyzing samples with yellow leaf curling symptoms. At first (spring-summer 2002) both viruses were always found in mixed infections, but in 2003 and 2004 18-35% of plants were found infected by TYLCV alone and 8-28% by TYLCSV alone, with 41-69% carrying both viruses. TYLCV has spread quickly in th…
PML nuclear body-residing proteins sequentially associate with HPV genome after infectious nuclear delivery.
2019
Subnuclear promyelocytic leukemia (PML) nuclear bodies (NBs) are targeted by many DNA viruses after nuclear delivery. PML protein is essential for formation of PML NBs. Sp100 and Small Ubiquitin-Like Modifier (SUMO) are also permanently residing within PML NBs. Often, large DNA viruses disassemble and reorganize PML NBs to counteract their intrinsic antiviral activity and support establishment of infection. However, human papillomavirus (HPV) requires PML protein to retain incoming viral DNA in the nucleus for subsequent efficient transcription. In contrast, Sp100 was identified as a restriction factor for HPV. These findings suggested that PML NBs are important regulators of early stages o…