Search results for " Fluctuations"

Hydration dependence of myoglobin dynamics studied with elastic neutron scattering, differential scanning calorimetry and broadband dielectric spectr…

2014

In this work we present a thorough investigation of the hydration dependence of myoglobin dynamics. The study is performed on D2O-hydrated protein powders in the hydration range 0<h<0.5 (h≡gr[D2O]/gr[protein]) and in the temperature range 20-300K. The protein equilibrium fluctuations are investigated with Elastic Neutron Scattering using the spectrometer IN13 at ILL (Grenoble), while the relaxations of the protein + hydration water system are investigated with Broadband Dielectric Spectroscopy; finally, Differential Scanning Calorimetry is used to obtain a thermodynamic description of the system. The effect of increasing hydration is to speed up the relaxations of the myoglobin + hydration …

Analiza anatomiczna drewna reliktowej sosny zwyczajnej z Sokolicy

2021

The work describes anatomical analysis of the wood from a relict Pinus sylvestris L. performed to determine its characteristics. Transverse ca. 20 μm thick sections were prepared with a core-microtome and observed in bright-field microscopy. Observations of tangential sections were performed in epi-fluorescence. The xylem of the relict pine showed many narrow growth rings. The occurrence of i.a. discontinuous tree rings, light rings and intraannual density fluctuations was stated. It can be expected that specific properties of the wood of the studied pine are the result of harsh growing conditions – limited water availability at the top of Sokolica. In addition, a wide range of factors affe…

IMPORTANCIA DE LAS PERTURBACIONES EXTERNAS EN LA ECONOMÍA ESPAÑOLA TRAS LA INTEGRACIÓN: ¿TAMAÑO DEL SHOCK O GRADO DE RESPUESTA?

2005

This paper analyses whether the impact of European shocks in the Spanisheconomy has increased after the entry of Spain in the European Community. UsingVAR models, we try to disentangle whether the change in the importance of Europe isdue to a change in the size of the shocks or in the propagation effects. The results showsthat after 1986, despite the decrease in the size of European shocks, their impact on theSpanish business cycle has increases due to a larger sensitivity of the Spanish economyto these shocks. El objetivo de este trabajo es analizar si ha aumentado la influencia de los shocks europeos en la economía española tras el proceso de integración en Europa, distinguiendo si los ca…

Does Labor Respond to Cyclical Fluctuations? The Case of Italy

2006

The aim of this paper is to analyse whether labour mobility is likely to act as a sufficient adjustment mechanism in the face of asymmetric shocks in Italy. In particular, the paper examines if the interregional migration responds, among other factors, also to the GDP's regional cyclical component. The results show that interregional labour mobility appears to respond adequately to current and past cyclical fluctuations.

A Comparative Analysis in the Field of the Economic Exposure to Currency Risk

2017

Currency fluctuations became a daily habit of nowadays financial markets and their impact canbe felt in all companies, from the mere domestic ones to the transnational corporations withintricate businesses around the world. Our paper investigates the economic exposure to currencyrisk for a number of 20 companies from Romania and Croatia, between 2006 and 2011, on a shorttermand long-term perspective. The results picture a different image regarding these companies’exposure either to the Euro and the US dollar. We find that Romanian companies are moreexposed to unexpected changes in the value of their national currency against both the Euro andthe US dollar compared to Croatian companies, wit…

Multiphoton Absorption of Myoglobin Nitric-Oxide complex: Relaxation by D-NEMD of a Stationary State

2012

ABSTRACT: The photodissociation and geminate recombination of nitric oxide in myoglobin, under continuous illumination, is modeled computationally. The relaxation of the photon energy into the protein matrix is also considered in a single simulation scheme that mimics a complete experimental setup. The dynamic approach to non-equilibrium molecular dynamics is used, starting from a steady state, to compute its relaxation to equilibrium. Simulations are conducted for the native form of sperm whale myoglobin and for two other mutants, V68W and L29F, illustrating a fair diversity of spatial and temporal geminate recombination processes. Energy flow to the heme and immediate protein environment …

Event-shape and multiplicity dependence of freeze-out radii in pp collisions at √s = 7 TeV

2019

Two-particle correlations in high-energy collision experiments enable the extraction of particle source radii by using the Bose-Einstein enhancement of pion production at low relative momentum q ∝ 1/R. It was previously observed that in pp collisions at s√ = 7TeV the average pair transverse momentum kT range of such analyses is limited due to large background correlations which were attributed to mini-jet phenomena. To investigate this further, an event-shape dependent analysis of Bose-Einstein correlations for pion pairs is performed in this work. By categorizing the events by their transverse sphericity ST into spherical (ST > 0:7) and jet-like (ST < 0:3) events a method was developed tha…

Growth and regional convergence : evidence from the Finnish provinces and subregions, 1960 to 1994

1997

Exotic Spin-Orbital Physics in Hybrid Oxides

2016

We compare the effective spin-orbital super\-exchange triggered by magnetic $3d$ impurities with $d^3$ and $d^2$ configurations and either no orbital degree of freedom (orbital dilution) or hole replacing a doublon (charge dilution) in a $4d^4$ Mott insulator with $S=1$ spins. Impurities causing orbital dilution act either as spin defects decoupled from the surrounding ions, or generate orbital polarons along $d^3$-$d^4$ hybrid bonds. The exchange on these bonds determines which orbital is occupied by a doublon on the host site. In case of charge dilution by $3d^2$ impurities additional $\propto T_i^+T_j^+$ terms arise which enhance orbital fluctuations. We show that such terms may radicall…

Optical quality of hyperopic and myopic phakic intraocular lenses

2013

Aims: To assess and compare the optical quality of the myopic and hyperopic implantable collamer lens (ICL) from its wavefront aberrations for different powers and pupil diameters. Settings and Design: Prospective study. Material and Methods: The wavefront aberrations of two myopic (−3 and −6 diopters (D)) and two hyperopic V4b ICLs (+3 and +6D) were measured in vitro . To assess and compare the optical quality of different powers of ICLs, we analyzed the root mean square (RMS) of total higher order aberrations (HOAs), trefoil, coma, tetrafoil, secondary astigmatism, and spherical aberration at 3- and 4.5-mm pupil. In addition, the point spread functions (PSFs) of each ICL evaluated were ca…