Search results for "Lament"

Boris Johnsonin "kansan pääministerin kyselytunti" : susi lampaan vaatteissa?

2019

Constituciones que se observan, y guardan en la Junta, y Academia de Jurisprudencia Practica

Port. amb ornament tip Escut reial xil. als Preliminars Caplletres ornades, fris Sign.: [A]4, B-C4 Reclams

Nonlinear Kelvin waves on a quantized vortex line in superfluid helium

2013

In this paper we show an exact solution (Kelvin wave) of an approximated dynamical equation for a quantized vortex line in helium superfluid at finite temperature. It is shown that the applied heat flux interacts with the vortex line, and the amplitude of the Kelvin wave can grow (the so-called Donnelly instability) or decrease according with the mutual direction between heat flux and wave vector.

Ectopic expression of desmin in the epidermis of transgenic mice permits development of a normal epidermis.

2002

Cell architecture is largely based on the interaction of cytoskeletal proteins, which include intermediate filaments (IF), microfilaments, microtubules, as well as their type-specific membrane-attachment structures and associated proteins. In order to further our understanding of IF proteins and to address the fundamental issue whether different IF perform unique functions in different tissues, we expressed a desmin transgene in the basal epidermis of mice. Ectopic expression of desmin led to the formation of an additional, keratin-independent IF cytoskeleton and did not interfere with the keratin-desmosome interaction. We show that ectopic expression of a type III IF protein in basal kerat…

α-parvin is required for epidermal morphogenesis, hair follicle development and basal keratinocyte polarity

2020

Epidermal morphogenesis and hair follicle (HF) development depend on the ability of keratinocytes to adhere to the basement membrane (BM) and migrate along the extracellular matrix. Integrins are cell-matrix receptors that control keratinocyte adhesion and migration, and are recognized as major regulators of epidermal homeostasis. How integrins regulate the behavior of keratinocytes during epidermal morphogenesis remains insufficiently understood. Here, we show that alpha-parvin (alpha-pv), a focal adhesion protein that couples integrins to actin cytoskeleton, is indispensable for epidermal morphogenesis and HF development. Inactivation of the murine alpha-pv gene in basal keratinocytes res…

Higher-order Kerr terms allow ionization-free filamentation in gases.

2010

We show that higher-order nonlinear indices ($n_4$, $n_6$, $n_8$, $n_{10}$) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon at 800 nm, in contrast with the previously accepted mechanism of filamentation where plasma was considered as the dominant defocusing process. Their consideration allows to reproduce experimentally observed intensities and plasma densities in self-guided filaments.

Measurement of high order Kerr refractive index of major air components: erratum

2010

A clarification is missing concerning the high order Kerr non-linearities deduced from our experimental data published in [Opt. Express 17, 13429-13434 (2009)]. Here, we rectify this omission by making explicit the distinction between cross-Kerr and Kerr effects, and by extrapolating the value of the nonlinear refractive index for the last effect. Since the occurrence of sign inversion in the Kerr effect is not affected, the overall report in [Opt. Express 17, 13429-13434] remains valid.

General approach to spatiotemporal modulational instability processes

2011

International audience; In this article, we derive the general exact solution of the modulation instability gain. The solution described here is valid for 1-D, 2-D, and 3-D cases considering any temporal response function of the medium and with possible higher order Kerr nonlinearities. In particular, we show that the gain induced by modulation instability is initial condition dependent, while the usual calculations do not lead to such a dependence. Applications for current and high-interest nonlinear propagation problems, such as 1-D optical fiber propagation with delayed Raman response and 2-D filamentation in gases, are investigated in detail. More specifically, we demonstrate that the 2-D …

Spectral dependence of purely-Kerr driven filamentation in air and argon

2010

5 pags, 4 figs.-- PACS number(s): 42.65.Jx, 42.65.Tg, 78.20.Ci. -- Publisher error corrected 27 September 2010, Erratum Phys. Rev. A 82, 039905 (2010): https://doi.org/10.1103/PhysRevA.82.033826

VERSA EST IN LUCTUM: UN LAMENTO FÚNEBRE RENACENTISTA ESPAÑOL

2018

espanolDentro de la tradicion occidental del lamento funebre, en el ambito cultural de lamusica del Renacimiento hispano, destaca un motete directamente relacionado conprogramas liturgicos: el “Versa est in luctum”. Este articulo presenta, desde una perspectiva historica, el estudio de cuatro de estas obras sobre el “Versa”, todas ellas muy representativas de la estetica luctuosa en Espana durante el siglo XVI, mucho mas si tenemos en cuenta a sus autores, ya que cada uno de ellos esta entre los mas importantes compositores de musica polifonica religiosa de su tiempo. Ellos son: Francisco Penalosa, Alonso Lobo, Sebastian Vivanco y Tomas Luis de Victoria EnglishRegarding to Western tradition…