Search results for "rius"
showing 10 items of 278 documents
Algorithms for {K, s+1}-potent matrix constructions
2013
In this paper, we deal with {K, s + 1}-potent matrices. These matrices generalize all the following classes of matrices: k-potent matrices, periodic matrices, idempotent matrices, involutory matrices, centrosymmetric matrices, mirrorsymmetric matrices, circulant matrices, among others. Several applications of these classes of matrices can be found in the literature. We develop algorithms in order to compute {K, s + 1}-potent matrices and {K, s + 1}-potent linear combinations of {K, s + 1}-potent matrices. In addition, some examples are presented in order to show the numerical performance of the method. (C) 2012 Elsevier B.V. All rights reserved.
L'Architettura è resiliente?
2022
Il contributo indaga specificatamente sul termine "Resilienza" ormai inflazionato a più usi e livelli . In vero ci si domanda come e quando l'architettura possa esser resiliente giacché appare non esserlo : "una architettura rotta, rotta è, e rotta rimane" senza possibilità di azioni che in autonomia la rigenerino. L’atto del costruire deve essere sempre atto nobile ma soprattutto responsabile, usando e scegliendo tecniche e tecnologie ‘adattive’ che pongano soluzioni sostenibili lontane dagli esercizi di stile in cui l’Architettura spesso si diletta (Lerner, 2012). Un positivo contributo alla ricerca della resilienza in Architettura potrebbe essere individuato forse nei materiali che la co…
I doni di Medea. Tra reciprocità e vendetta
2019
Qual è la funzione dei doni nella storia di Medea, e che cosa ci comunicano? Attraverso di essi Medea sembra in grado di costruire relazioni e, all’opposto, di vendicarsi sui suoi nemici. È sulla base dei doni che interpreta offese e vendetta come inversioni dei meccanismi di reciprocità positiva in cui è calata. Partendo dunque dall’assunto che Medea sia, innanzitutto, una “donatrice al femminile”, il contributo esamina le più rilevanti rappresentazioni della sua storia mitica alla luce della categoria del dono. Pertanto, nella prima parte (“i doni per Giasone”) si presterà particolare attenzione alle “Medee” di Pindaro, Apollonio Rodio, Ovidio e Valerio Flacco, senza tralasciare le …
0307 : QSOX1 has a protective role in the myocardium face to acute stress
2015
IntroductionQSOX1 was identified as a plasma biomarker of acute heart failure (AHF). QSOX1 being a sulfhydryl oxidase, our aim was to decipher the role of QSOX1 in the heart face to an AHF event.MethodsAHF was provoked by IP injections of Isoproterenol (ISO, 300mg/kg/12h) for 2 days in mice (C57Bl/6 J) whereas control (C) received NaCl 9‰. Mice were killed at day 3, after echocardiography. QSOX1 KO (C57Bl/6 J) mice were generated using a QSOX1tm1a embryonic stem cell clone (KOMP). The KO construct contains a promoter-less lacZ gene under the control of the QSOX1 regulatory sequences. The mRNA levels were analyzed by RT-qPCR. The cellular level of oxidative stress was detected by using DHE. …
Smiltāja neļķes (Dianthus arenarius) izplatības modelēšana pelēkajās kāpās izmantojot attālās izpētes datus
2016
Smiltāja neļķe (Dianthus arenarius) ir Latvijā reti sastopama, aizsargājama vaskulāro augu suga. Tās pasuga Dianthus arenariu subsp. arenarius ir aizsargājama visā Eiropas Savienības (ES) līmenī. Lai būtu iespējams mainīt esošo situāciju, nepieciešams iegūt vairāk datu par sugas izplatību ietekmējošajiem faktoriem, kā arī noskaidrot iespējamās smiltāja neļķu augšanas vietas, ar mērķi precizēt sugas populācijas lielumu. Mūsdienās nereti sugu iespējamā izplatība pētāmajā teritorijā tiek modelēta, balstoties uz attālās izpētes datiem. Lai noskaidrotu smiltāja neļķes izplatību ietekmējošos faktorus, Užavas dabas lieguma pelēkajās kāpās izveidoti 233 apļveida parauglaukumi (D= 3 m) vietās ar un …
Morphological determination of the phototrophic community composition of biological soil crusts in coastal sand dunes in northern Germany
2022
This dataset comprises the microbial community composition of biological soil crusts in north-German sand dunes. For this we obtained enrichment cultures of phototrophic microorganisms, by placing fragments of biocrusts of the same Petri dishes as used for sequencing, in Petri dishes with Bold Basal (1N BBM) agarized medium (Bischoff and Bold 1963). Cultures were grown under standard laboratory conditions: with a 12-hour alteration of light and dark phases and irradiation of 25 μmol photons m-2 s-1 at a temperature 20 ± 5 ºС. Microscopic study of these raw cultures began in the third week of cultivation. Morphological examinations were performed using Olympus BX53 light microscope with Noma…
Massimo Gioseffi (ed.), Uso, riuso e abuso dei testi classici. Colloquium. Milano: LED Edizioni Universitarie di Lettere Economia Diritto, 2010. Pp. …
2011
La definizione “miscellanea” si adatta in senso stretto al volume presente: esso contiene lavori molto diversi, per metodo e qualità, uniti da un filo conduttore. L’idea sottostante la pubblicazione è dichiarata nella prefazione: “nella storia della cultura occidentale due fattori sembrano avere assunto un peso decisivo. Il primo è l'adozione, fino alla nostra più stretta contemporaneità, della lettura diretta degli autori – gli auctores – all'interno della scuola, accanto, e qualche volta addirittura al posto, dei «manuali» nati per le specifiche esigenze didattiche. Il secondo è la mancata sostituzione del canone degli autori.”
Matrices A such that A^{s+1}R = RA* with R^k = I
2018
[EN] We study matrices A is an element of C-n x n such that A(s+1)R = RA* where R-k = I-n, and s, k are nonnegative integers with k >= 2; such matrices are called {R, s+1, k, *}-potent matrices. The s = 0 case corresponds to matrices such that A = RA* R-1 with R-k = I-n, and is studied using spectral properties of the matrix R. For s >= 1, various characterizations of the class of {R, s + 1, k, *}-potent matrices and relationships between these matrices and other classes of matrices are presented. (C) 2018 Elsevier Inc. All rights reserved.
Physiological advantages of dwarfing in surviving extinctions in high-CO2 oceans
2015
Excessive CO2 in the present-day ocean-atmosphere system is causing ocean acidification, and is likely to cause a severe biodiversity decline in the future, mirroring effects in many past mass extinctions. Fossil records demonstrate that organisms surviving such events were often smaller than those before, a phenomenon called the Lilliput effect. Here, we show that two gastropod species adapted to acidified seawater at shallow-water CO2 seeps were smaller than those found in normal pH conditions and had higher mass-specific energy consumption but significantly lower whole-animal metabolic energy demand. These physiological changes allowed the animals to maintain calcification and to partial…
Simultaneous detection of the main black aspergilli responsible for ochratoxin A (OTA) contamination in grapes by multiplex real-time polymerase chai…
2009
9 pages.