Search results for "tropi"
showing 10 items of 1946 documents
The linearized Calderón problem for polyharmonic operators
2023
In this article we consider a linearized Calderón problem for polyharmonic operators of order 2m (m ≥ 2) in the spirit of Calderón’s original work [7]. We give a uniqueness result for determining coefficients of order ≤ 2m − 1 up to gauge, based on inverting momentum ray transforms. peerReviewed
Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC
2019
Measurements of anisotropic flow coefficients ($v_n$) and their cross-correlations using two- and multi-particle cumulant methods are reported in collisions of pp at $\sqrt{s} = 13$ TeV, p-Pb at $\sqrt{s_{_{\rm NN}}} = 5.02$ TeV, Xe-Xe at $\sqrt{s_{_{\rm NN}}} = 5.44$ TeV, and Pb-Pb at $\sqrt{s_{_{\rm NN}}} = 5.02$ TeV recorded with the ALICE detector. The multiplicity dependence of $v_n$ is studied in a very wide range from 20 to 3000 particles produced in the mid-rapidity region $|��|<0.8$ for the transverse momentum range $0.2 < p_{\rm T} < 3.0$ GeV/$c$. An ordering of the coefficients $v_2 > v_3 > v_4$ is found in pp and p-Pb collisions, similar to that seen in large coll…
Korkeakoulutettujen tuloerot Suomessa vuosina 1990 ja 2000
2007
On static instability and estimates for critical velocities of axially moving orthotropic plates under inhomogeneous tension
2012
In this study, models for axially moving orthotropic plates are investigated analytically. Linearised Kirchhoff plate theory is used, and the energy forms of steady-state models are considered. With the help of the energy forms,ho- mogeneous and inhomogeneous tension profiles, some limits for the critical web velocity are found analytically. A numerical example is given about effects of the shear moduls in the case of an inhomogenous tenstion profile. nonPeerReviewed
Experimental evolution of an RNA virus in cells with innate immunity defects
2015
Experimental evolution studies have shown that RNA viruses respond rapidly to directional selection and thus can adapt efficiently to changes in host cell tropism, antiviral drugs, or other imposed selective pressures. However, the evolution of RNA viruses under relaxed selection has been less extensively explored. Here, we evolved vesicular stomatitis virus in mouse embryonic fibroblasts knocked-out for PKR, a protein with a central role in antiviral innate immunity. Vesicular stomatitis virus adapted to PKR-negative mouse embryonic fibroblasts in a gene-specific manner, since the evolved viruses exhibited little or no fitness improvement in PKR-positive cells. Full-length sequencing revea…
Paramagnētisku daļiņu ķēdes rotējošā laukā
2020
Šajā darbā ir veikti paramagnētisku daļiņu kustības skaitliskie aprēķini viskozā šķidrumā rotējošā laukā. Modelī tiek izmantotas daļiņas ar vienas ass magnētisko anizotropiju. Pēc veikto simulāciju rezultātiem tika izpētīti daļiņu rotācijas režīmi ķēdēs, kad daļiņas anizotropijas ass spēj un kad nespēj izsekot lauka rotācijai un parādīta šo režīmu ietekme uz ķēdes stabilitāti rotējošā laukā. Ir iegūta maksimālā, jeb kritiskā lauka rotācijas frekvence pie kādas ķēde nesalūst, atkarībā no ķēžu garuma pie dažādiem magnētiskās anizotropijas parametriem. Skaitliskie rezultāti salīdzināti ar literatūrā atrodamiem teorētiskiem rezultātiem. Ja daļiņas telpā izkārto haotiski, tad pēc iedarbošanās ar…
Pressione antropica e rischio idrogeologico. Politiche di prevenzione e gestione dei dissesti nella pianificazione territoriale
2013
Typification of five plant names described based on specimens collected by Józef Warszewicz in Central and South America.
2022
Józef Warszewicz (1812–1864) was one of the first Polish naturalists to explore the flora of the tropical New World. During two expeditions to Central and South America (1844–1850 and 1850–1853) he collected and delivered to Europe up to twenty thousand plant specimens. To honour his service and his achievements in plant collections, different taxonomists described more than 100 taxa using the surname Warszewicz, for example in the genus name (Warszewiczia) and the species epithets (warszewiczii, warscewiczii, warszewicziana). Unfortunately, a large part of Warszewicz’s collection of plant species deposited in the Berlin Herbarium (B), including many type specimens was destroyed during Worl…
Supplementary material 1 from: Nobis M, Klichowska E, Wolanin M, Nobis A, Nowak A (2022) Typification of five plant names described based on specimen…
2022
Table S1
Statīnu terapijas ietekme uz trimetilamīna N-oksīda koncentrāciju asinīs
2016
Ievads. Trimetilamīna N-oksīds (TMAO) ir jauns kardiovaskulārā riska marķieris, kura metabolisms un riska asociācijas mehānismi ir neskaidri. Statīni ir svarīgākie aterosklerozes risku mazinošie līdzekļi, tomēr ne visi t.s. pleiotropie statīnu darbības mehānismi ir skaidri. Nav zināms, vai statīni ietekmē TMAO metabolismu. Pētījuma mērķis. Šī darba galvenais mērķis bija noskaidrot, vai un kā statīnu terapija ietekmē trimetilamīna N-oksīda koncentrāciju asinīs, un vai tā līmenim asins plazmā ir saistība ar statīnu hipolipidemizējošo efektu un citām bioķīmisko rādītāju izmaiņām, kas rodas statīnu terapijas ietekmē. Materiāli un metodes. Šis bija atklāts, prospektīvs, nerandomizēts, viena cent…