Search results for " generation."

Quantum ring: HHG spectrum control

2015

Atoms, molecules , clusters and other systems driven by a strong laser field of frequency \omega_L can emit a spectrum of laser harmonics. The high harmonics generation (HHG) phenomen is strongly affected by the symmetries of the system. It is well known that systems with rotational symmetries emit only odd harmonics. Numerous researcher make mainly attention to the possibilities to set different initial conditions in order to control the spectrum. Recently, the study of nanotechnology is hot-topics and in particular the study of very symmetric systems such as fullerene, nanoring and structured nanoring (nanoring with identical and symmetric scattering centers). Therefore, it is natural and…

Study of the Effects of Nuclear Motion on High Harmonic Generation in Simple Molecules

2010

Harmonic emission at microwave frequencies in Ba0.6K0.4BiO3 crystals

1998

Abstract Nonlinear microwave emission by Ba0.6K0.4BiO3 crystals is investigated. Second- and third-harmonic signals are studied as a function of the temperature and the applied magnetic field at different values of the input power level. The experimental data are discussed in the framework of models previously reported in the literature. We show that there are several mechanisms responsible for harmonic emission in Ba0.6K0.4BiO3 crystals: they play a different role depending on the temperature and the intensity of the applied field. We suggest that harmonic emission at temperatures far from Tc is due to nonlinear processes in weak links or flux motion, while nonlinearity near Tc is ascribab…

How bilastine is used to treat allergic rhinitis and urticaria in children

2021

Management guidelines for allergic rhinitis and urticaria recommend oral second-generation antihistamines as first-line treatment. The efficacy and safety of bilastine, the newest nonsedating second-generation antihistamine, are well established in adolescents/adults with these allergic conditions. The bilastine development program for pediatric use (2–<12 years) followed EMA-authorized processes. Pharmacokinetic/pharmacodynamic simulation and modeling and a pharmacokinetic study were conducted to identify and confirm the pediatric dose (10 mg/day). A Phase III, multicenter, double-blind, randomized, placebo-controlled, parallel-group study was performed to confirm the safety of bilasti…

Career Paths in Institutional Business Elites: Finnish Family Firms from 1762–2010

2015

This article analyzes the career paths of family business executives in institutional business elites in Finland using an empirical database based on a Bourdieusian prosopographical approach. The results indicate that career paths became more complex but shortened in length toward the beginning of the twenty-first century. The early career paths of family executives changed from positions as assistants and salesmen in the eighteenth and nineteenth centuries to governance, chief executive officer (CEO), and management positions in the twentieth and twenty-first centuries. Compared with the founder generation, next-generation family members benefited from more rapid institutional business eli…

La educación para la promoción de los derechos humanos de la tercera generación

2008

The paper deals with the ways to promote the third generation human rights through education. It underlines the evolutionary dynamism of human rights and the necessity to promote a culture based on their recognition. Solidarity is analysed as the value which specify this generation of rights. Then the author defends the rights to a healthy environment, to peoples’ development, and to peace, as key components of any international political community or local communities aiming to meet the requirements of human dignity. Finally, he proposes some pedagogical practices to help the students to become conscious and responsible citizens, so they have the competence to ask to individuals and groups…

The business elite in Finland: a prosopographical study of family firm executives 1762–2010

2015

This study presents a prosopographical analysis of the Finnish business elite. The longitudinal panel dataset includes 456 members of family firms from 1762–2010 who have received the honorary title of counsellor in Finland. Counsellor biographies have been written by an economic history association network of 130 historians. Most family firms are no longer elite after the third generation of the family business or the second counsellor generation; therefore, the same core families rarely remain part of the economic elite for more than 100 years.

Concise review of interrill erosion studies in SE Spain (Alicante and Murcia): erosion rates and progress of knowledge from the 1980s

2005

From the 1980s onward studies on interrill soil erosion were intensified in SE Spain. The main achievements of the research carried out in the field areas of Alicante and Murcia concern: first, (1) the estimation of erosion rates directly in the field under a wide range of methodologies, different scales and different environmental conditions; (2) estimations based on existing models, such as the USLE, carried out for different subcatchments of the Segura and Júcar catchments; and (3) other parametric and physical event-based models have also been calibrated and validated. Second, the progress of the knowledge in understanding erosion mechanisms. New and reviewed concepts regarding mainly h…

Analysis of soil surface component patterns affecting runoff generation. An example of methods applied to Mediterranean hillslopes in Alicante (Spain)

2008

Spatial patterns of soil surface components (vegetation, rock fragments, crusts, bedrock outcrops, etc.) are a key factor determining hydrological functioning of hillslopes. A methodological approach to analyse the patterns of soil surface components at a detailed scale is proposed in this paper. The methods proposed are applied to two contrasting semi-arid Mediterranean hillslopes, and the influence of soil surface component patterns on the runoff response of the slopes was analysed. A soil surface components map was derived from a high resolution photo-mosaic obtained in the field by means of a digital camera. Rainfall simulation experimental data were used to characterise the hydrologica…

New Internal-Charge-Transfer Second-Order Nonlinear Optical Chromophores Based on the Donor Ferrocenylpyrazole Moiety

2016

A series of new N-arylated ferrocenepyrazole structures, carrying different donor or acceptor substituents in the para position of the aryl ring, has been synthesized by the Chan-Lam cross-coupling reaction. The nonplanar geometric molecular structure of some of these chromophores together with their crystal packing was determined by X-ray diffraction, and the HOMO and LUMO energy levels were evaluated by electrochemical and optical measurements and by density functional theoretical (DFT) calculations. By the investigation of solvent effects and time-dependent DFT (TD-DFT) calculations, the intense electronic absorption band around 270-310 nm was confirmed to be an internal-chargetransfer (…