Search results for "iris"

Functional consequences of prejunctional receptor activation or blockade in the iris.

1994

The iris is innervated by nerves of the sympathetic, parasympathetic, and sensory nervous systems. The terminal nerve fibres are endowed with prejunctional receptors which modulate neurotransmitter release. Activation or blockade of prejunctional receptors by drugs may have an influence on iris smooth muscle tone. Several findings are in favour of the hypothesis that prejunctional receptors may be involved in regulation of iris smooth muscle tone and/or pathophysiological events. (i). Release of acetylcholine from parasympathetic nerves of guinea-pig iris sphincter evoked by electrical stimulation is subject to autoinhibition via prejunctional M2 muscarinic receptors, and the release can be…

Political Responsibility Refocused: Thinking Justice after Iris Marion Young

2015

One of the most significant challenges that twenty-first-century philosophy has to face is to think about our moral and political responsibility in collective and global contexts. In our globalized...

Eoin O'Conaill's photographic works

2016

International audience

IRiS—Exploring new frontiers in neutron-rich isotopes of the heaviest elements with a new Inelastic Reaction Isotope Separator

2011

Abstract A dedicated Inelastic Reaction Isotope Separator (IRiS) for multi-nucleon transfer products will be designed and installed at GSI. Research at IRiS will focus on the investigation of new neutron-rich isotopes of the heaviest elements, study of which will advance various research fields, such as nuclear chemistry, nuclear and atomic physics, as well as nuclear astrophysics. The scientific motivation for this project and the alternative design options for the separator and its main components are discussed.

Intrakraniālo aneirismu endovaskulāra ārstēšana ar plūsmas novirzītāju stentiem

2016

Darba mērķis ir zinātniski pamatot intrakraniālu aneirismu endovaskulāru ārstēšanu ar plūsmas novadītājiem. Darba uzdevumi 1. apkopot esošos teorētiskos datu rezultātus par intrakraniālu aneirismu patoloģiju, anamnēzi un ārstēšanu, kur lietoti plūsmas novirzītāji; 2. apkopot PSKUS plūsmas novirzītāju lietošanas pieredzi intrakraniālu aneirismu ārstēšanā. 3. atrast saistību starp intrakraniālo stentu implantāciju un mātes asinsvada remodelāciju, aneirismas maisa mazināšanos. Metodes tika veikts retrospektīvs pētījums, kuram ētikas komisijas atļauju deva LU Eksperimentālās un klīniskās medicīnas institūta Zinātniskās izpētes ētikas komisija. Pētījumā tika analizēts 31 intrakraniālo aneirismu …

Pragmatismo, a priori, analiticità: la linea genealogica Peirce-Lewis-Quine

2006

ICONE19-43144 RELAP5 SIMULATION OF TWO-PHASE FLOW EXPERIMENTS IN VERTICAL HELICAL TUBES

2011

The conceptualisation of austerity in the Portuguese, Spanish and Irish press

2017

The aim of this chapter is to analyse the conceptualisation of austerity in three different European cultures by identifying metaphorical expressions used in one representative newspaper of the Portuguese, the Spanish and the Irish press between 2011 and 2012. The metaphors were identified by searching for three keywords from the field of economy and politics (austeridade-austeridad-austerity, corte-recorte-cut and divida-deuda-debt) and were then classified according to the type of schema they instantiate, namely, propositional schema, image schema or event schema. Assuming the general framework of Cultural Linguistics and corpus-based and discourse-based approaches to conceptual metaphor,…

Inducible and reversible inhibition of mirna-mediated gene repression in vivo

2021

Although virtually all gene networks are predicted to be controlled by miRNAs, the contribution of this important layer of gene regulation to tissue homeostasis in adult animals remains unclear. Gain and loss-of-function experiments have provided key insights into the specific function of individual miRNAs, but effective genetic tools to study the functional consequences of global inhibition of miRNA activity in vivo are lacking. Here we report the generation and characterization of a genetically engineered mouse strain in which miRNA-mediated gene repression can be reversibly inhibited without affecting miRNA biogenesis or abundance. We demonstrate the usefulness of this strategy by invest…

Razonamientos no rigurosos y demostraciones asistidas por ordenador

2007

RESUMENPresentamos la contribución de Th. Tymoczko a la filosofía de la matemática y analizamos y evaluamos las demostraciones asistidas por ordenador y los razonamientos no rigurosos en la matemática experimental, con particular referencia al Teorema de los Cuatro Colores.PALABRAS CLAVETYMOCZKO – CUASI-EMPIRISMO – MATEMÁTICA EXPERIMENTAL – RAZONAMIENTO NO RIGUROSO – DEMOSTRACIONES ASISTIDAS POR ORDENADORABSTRACTWe present Th. Tymoczko’s contribution to the philosophy of mathematics, and we analyze and evaluate the computer-assisted proofs and the non-rigorous reasonings in the experimental mathematics, particularly in reference to the Four-Colour Theorem.KEYWORDTYMOCZKO – QUASI-EMPIRICISM …