Search results for "Roca"
showing 10 items of 1893 documents
Three New Species of the Bothriomirine Genus Leprocapsus Poppius from Indonesia (Hemiptera: Heteroptera: Miridae: Cylapinae)
2012
Abstract Three new species of the genus Leprocapsus Poppius from Indonesia, L. irianjayensis n. sp. and L. parvus n. sp. (Irian Jaya), and L. schuhi n. sp. (Sulawesi), are described. A color photograph of the adult and illustration of the antennal segments I and II of each treated taxa, dorsal habitus drawing of L. schuhi, illustration of the male genitalia of L. parvus, and scanning electron micrographs of selected structures of L. irianjayensis, L. schuhi, and L. scutellaris are provided. A key to all known species, diagnosis and the distribution map of the genus Leprocapsus are given.
Influence of Chemical Enhancers and Iontophoresis on the In Vitro Transdermal Permeation of Propranolol: Evaluation by Dermatopharmacokinetics
2018
[EN] The aims of this study were to assess, in vitro, the possibility of administering propranolol transdermally and to evaluate the usefulness of the dermatopharmacokinetic (DPK) method in assessing the transport of drugs through stratum corneum, using propranolol as a model compound. Four chemical enhancers (decenoic and oleic acid, laurocapram, and R-(+)-limonene) and iontophoresis at two current densities, 0.25 and 0.5 mA/cm(2) were tested. R-(+)-limonene, and iontophoresis at 0.5 mA/cm(2) were proven to be the most efficient in increasing propranolol transdermal flux, both doubled the original propranolol transdermal flux. Iontophoresis was demonstrated to be superior than the chemical…
Influence of surface processes and initial topography on lateral fold growth and fold linkage mode
2015
Elongation of randomly distributed fold segments and their potential linkage are important for hydrocarbon exploration because it can greatly influence the morphology of the reservoir and both migration and accumulation of hydrocarbons in antiformal traps. Here we study the effects of surface processes and the presence of a topographic slope on the different linkage modes that can occur, and how these parameters affect the required horizontal offset for perturbations to link. The proposed numerical model represents a sedimentary cover detached over a much weaker basal decollement layer. The upper surface is modified by mass redistribution, which is achieved by a combination of fluvial and h…
ECG-gated multislice computed tomography angiography as a comprehensive non-invasive imaging tool in patient with aortic coarctation
2021
We describe a case of a 52-year-old-woman with aortic coarctation demonstrated by means of 40-slice MSCT angiography. Based on the information extracted from MSCT it was possible to display the anatomical configuration of the disease, the thoraco-abdominal collateral pathways. The best therapeutic approach was established on the basis of MSCT findings. MSCT is a reliable and comprehensive tool for the assessment of adult patients with aortic coarctation. (www.actabiomedica.it).
Nanomaterials and devices for energy storage and conversion
2019
El trabajo descrito en esta tesis está motivado por la intención de desarrollar diferentes nanomateriales para su aplicación en el sector energético, tanto para el almacenamiento como para la conversión de energía. Para ello, se han desarrollado diferentes nanomateriales para cumplir los objetivos de los diferentes capítulos. Por una parte, se presentan dos nuevos materiales con propiedades supercapacitivas. El primero es un nanocomposite formado por nanopartículas metálicas embebidas en una matriz grafítica, obtenido mediante un tratamiento térmico, usando como precursor un hidróxido doble laminar (LDH en inglés) de NiFe. A dicho nanocomposite se le hace un estudio in-situ de su formación …
Chlorinated hydrocarbons and total mercury in the prey of the white-tailed eagle (Haliaeetus albicilla L.) in the quarken straits of the gulf of both…
1976
Samples of the white-tailed eagle population and its prey were collected from the Quarken straits area of the Gulf of Bothnia, Finland, and were analyzed for DDT, DDD, PCBs, aldrin, lindane, and mercury. Mercury, PCB, and DDE were detected in all animals studied. It was concluded that one of the most important reasons for the poor breeding results of the white-tained eagle (especially hatchability) are the combined effects of the studied pollutants originating for the most part from the fish-eating species in its prey (mergansers and great crested grebes). (JTE)
When financial economics influences physics: The role of Econophysics
2019
This paper aims at analyzing the unexpected influence of Financial economics on Physics. The rise of Econophysics, a fundamentally new approach in finance, suggests that the influence between the two disciplines becomes less unilateral than in the past. Methodological debates emerging in Econophysics led physicists to acknowledge that dealing with financial complex systems contributed to a wider modelling of their field. The approach of econophysicists suggests that physicists might try to conceptualize physical phenomena by integrating elements they faced with in Financial economics, and more generally in Economics. Surprisingly, many of econophysicists’ argumentations have some methodolog…
Computational Screening of Doped Graphene Electrodes for Alkaline CO2 Reduction
2020
The electrocatalytic CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR) is considered as one of the most promising approaches to synthesizing carbonaceous fuels and chemicals without utilizing fossil resources. However, current technologies are still in the early phase focusing primarily on identifying optimal electrode materials and reaction conditions. Doped graphene-based materials are among the best CO<sub>2</sub>RR electrocatalysts and in the present work we have performed a computational screening study to identify suitable graphene catalysts for CO<sub>2</sub>RR to CO under alkaline conditions. Several types of modified-graphene frame…
Accélération technologique et transformations organisationnelles dans l'industrie d'exploration-production d'hydrocarbures
2000
The upstream oil and gas industry experienced a dramatic technological acceleration in the early 1970's. The relationships between the agents in this industry have themselves undergone deep changes since that date. This thesis shows that a tight link exists between the technological acceleration and the organizational transformations in the upstream oil and gas industry. In a first part, it focuses on the economic theory's developments concerning industrial organization. In a second part, it applies these developments to three types of relations: those between the owner-states of hydrocarbon resources and the international petroleum companies; those between the international petroleum compa…
When Financial Economics Influences Physics: The Role of Econophysics
2018
This paper aims at analyzing the unexpected influence of Financial economics on Physics. The rise of Econophysics, a fundamentally new approach in finance, suggests that the influence between the two disciplines becomes less unilateral than in the past. Methodological debates emerging in Econophysics led physicists to acknowledge that dealing with financial complex systems contributed to a wider modelling of their field. The approach of econophysicists suggests that physicists might try to conceptualize physical phenomena by integrating elements they faced with in Financial economics, and more generally in Economics. Surprisingly, many of econophysicists’ argumentations have some methodolog…