Interplay between the charge transport phenomena and the charge-transfer phase transition in RbxMn[Fe(CN)6]y.zH2O

Charge transport and dielectric measurements were carried out on compacted powder and single-crystal samples of bistable RbxMn[Fe(CN)6]y·zH2O in the two valence-tautomeric forms (MnIIFeIII and MnIIIFeII) as a function of temperature (120-350 K) and frequency (10-2-106 Hz). The complex conductivity data reveal universal conductivity behavior and obey the Barton-Nakajima-Namikawa relationship. The charge transport is accompanied by dielectric relaxation that displays the same thermal activation energy as the conductivity. Surprisingly, the activation energy of the conductivity was found very similar in the two valence-tautomeric forms (0.55 eV), and the conductivity change between the two phases is governed mainly by the variation of the preexponential factor in each sample. The phase transition is accompanied by a large thermal hysteresis of the conductivity and the dielectric constant. In the hysteresis region, however, a crossover occurs in the charge transport mechanism at T < 220 K from an Arrhenius-type to a varying activation energy behavior, conferring an unusual “double-loop” shape to the hysteresis.

Generalized Backscattering and the Lax-Phillips Transform

2000 Mathematics Subject Classification: 35P25, 35R30, 58J50.

(Table S1) Stable carbon and oxygen isotope ratios of benthic foraminifera of the western Atlantic Ocean

Oxygen and carbon isotopic data were produced on the benthic foraminiferal taxa Cibicidoides and Planulina from 25 new piston cores, gravity cores, and multicores from the Brazil margin. The cores span water depths from about 400 to 3000 m and intersect the major water masses in this region. These new data fill a critical gap in the South Atlantic Ocean and provide the motivation for updating the classic glacial western Atlantic d13C transect of Duplessy et al. (1988). The distribution of 13C of SumCO2 requires the presence of three distinct water masses in the glacial Atlantic Ocean: a shallow (~1000 m), southern source water mass with an end-member d13C value of about 0.3-0.5 per mil VPDB, a middepth (~1500 m), northern source water mass with an end-member value of about 1.5 per mil, and a deep (>2000 m), southern source water with an end-member value of less than -0.2 per mil, and perhaps as low as the -0.9 per mil values observed in the South Atlantic sector of the Southern Ocean (Ninnemann and Charles, 2002, doi:10.1016/S0012-821X(02)00708-2). The origins of the water masses are supported by the meridional gradients in benthic foraminiferal d18O. A revised glacial section of deep water d13C documents the positions and gradients among these end-member intermediate and deep water masses. The large property gradients in the presence of strong vertical mixing can only be maintained by a vigorous overturning circulation.

Radiocarbon dating of bottom sediments from the Baltic Sea

Results of radiocarbon dating of bottom sediments from the Baltic Sea are presented for four areas investigated during Cruises 16 and 26A of R/V Akademik Kurchatov. The dating was based mainly on organic matter from the sediments. At marine Holocene stage sedimentation rate was 0.2-1.0 mm/yr, with a sharp increase at the Sub-Atlantic Holocene phase. Considerable re-deposited sediment strata present in deep-water troughs. Material from bottom deposits of the stage of glacier-associated Baltic lakes, inherited from moraine deposits according to radiocarbon dating, represents sediments from a basin that existed at the site of the present-day Baltic Sea in the second half of Middle Würm and re-worked by a glacier.

Experimental detection of sudden stiffness change in a structural system employing Laser Doppler Vibrometry

Sudden changes in the stiffness of a structure are often indicators of structural damage. Detection of such sudden stiffness change from the vibrations of structures is important for Structural Health Monitoring (SHM) and damage detection. Non-contact measurement of these vibrations is a quick and efficient way for successful detection of sudden stiffness change of a structure. In this paper, we demonstrate the capability of Laser Doppler Vibrometry to detect sudden stiffness change in a Single Degree Of Freedom (SDOF) oscillator within a laboratory environment. The dynamic response of the SDOF system was measured using a Polytec RSV-150 Remote Sensing Vibrometer. This instrument employs Laser Doppler Vibrometry for measuring dynamic response. Additionally, the vibration response of the SDOF system was measured through a MicroStrain G-Link Wireless Accelerometer mounted on the SDOF system. The stiffness of the SDOF system was experimentally determined through calibrated linear springs. The sudden change of stiffness was simulated by introducing the failure of a spring at a certain instant in time during a given period of forced vibration. The forced vibration on the SDOF system was in the form of a white noise input. The sudden change in stiffness was successfully detected through the measurements using Laser Doppler Vibrometry. This detection from optically obtained data was compared with a detection using data obtained from the wireless accelerometer. The potential of this technique is deemed important for a wide range of applications. The method is observed to be particularly suitable for rapid damage detection and health monitoring of structures under a model-free condition or where information related to the structure is not sufficient.

(Table 1) Composition of lipids in particulate matter and bottom sediments of the Baltic Sea

Lipid contents in the upper layer of bottom sediments in the Baltic Sea range from 0.37 to 2.66 mg/g (1.2-25.8% Corg). It is shown that the main factors determining composition of lipids in bottom precipitates are relative roles of different sources of lipids in sediments and conditions of sediment accumulation. Runoff of the Daugava River into the Gulf of Riga contributes simple low-polarity lipids. Sterols and certain bound fatty acids originate in living organic matter. Polar lipids are formed by inheritance of complex phospholipids and glycolipids from plankton and/or by formation of polycondensates.

Fijación de criterios para la implementación de una solución al transporte intermunicipal de pasajeros en el corredor vial del sur de la ciudad

Con el objetivo de llevar a cabo el Proyecto de Centralización de Despacho de Vehículos y de Pasajeros del Transporte intermunicipal, se constituyó por Escritura Pública 5512 de 15 de octubre de 1967, otorgada en la Notaria 2ª. De Cali, la Sociedad Anónima denominada inicialmente Central de Transportes y posteriormente Centrales de Transportes S.A. con el propósito de procurar dar solución al problema de Transporte Masivo de Pasajeros por carretera mediante la construcción de Terminales de Transporte. Los objetivos propuestos para la Terminal fueron: Sociourbanístico, Control, Mejoramiento del nivel de servicio a los usuarios, creación de un polo de desarrollo, Aspectos urbanos, de tránsito y viales de la ciudad y Normatividad actual de la industria de transporte de pasajeros por carretera.

Derecho procesal contemporáneo

El lector podrá encontrar en este texto un juicioso e inteligible acercamiento a las más importantes instituciones del derecho procesal, a sus corrientes teóricas y a los debates contemporáneos de la disciplina. En este sentido, la obra busca brindar claridad sobre el panorama general del derecho procesal desde una perspectiva actual, generando reflexiones y esperando trascender en las tradicionales formas de abordar el estudio de esta importante faceta del Derecho. De esta forma se entrega a la comunidad académica el presente texto que se espera sea de gran utilidad para el entendimiento de la problemática y de las nuevas tendencias del Derecho Procesal Contemporáneo.

Multinacionális vállalatok globalizált erp-modelljei, fejlődési tendenciák

A cikk nemzetközi cégeknél, illetve multinacionális vállalkozások hazai leányvállalatainál folytatott kutatás és szakértői megbeszélések alapján az ERP- (Enterprise Resource Planning) rendszerek globális telepítésének IT-struktúráit mutatja be, mely struktúrák a konszernszintű (centralizált) és országspecifikus (lokális) feldolgozások kapcsolatában alakulnak ki. A szerzők célja, hogy az ERP-rendszerek egyre növekvő alkalmazásainak telepítési formáit modellekbe foglalják. A gyakorlati tapasztalatok és szakirodalmi elemzés alapján az ERP globalizálódási folyamat fejlődési irányait is bemutatják.

La carte et le territoire de Michel Houellebecq: un auteur au cœur de son roman

L'objectif principal de ce travail est de démontrer que Michel Houellebecq est au centre de son roman dans La Carte et le Territoire. En d'autres termes, nous pouvons dire qu'il est affecté à un poste roman Michel Houellebecq. Mais derrière cet objectif, d'autres peaux. En effet, il est aussi comprendre les motivations de l'auteur de développer son roman au sujet de son personnage. Nous voulons aussi déchiffrer les stratégies littéraires utilisés par l'auteur pour écrire son roman et définir le genre autobiographique de l'œuvre. Mais la difficulté de la question réside dans le caractère Auteur ambigu. Définir précisément le type de la carte et le territoire est une tâche difficile en raison de la originalité des performances offertes par l'écrivain. On pourrait penser qu'il a inventé, créé ce roman, un nouveau genre autobiographique encore à définir. La réponse à la question suivra un itinéraire: à partir de la première place, par la définition du genre Autobiographical de La Carte et le territoire à travers un inventaire des genres autobiographiques existantes et caractéristiques de chacun, une brève analyse du roman à la position dans des genres étudiés précédemment. Mais si la théorie est simple, la pratique est pas nécessairement parce que le roman Michel Houellebecq ne correspond pas à une réplique parfaite des caractéristiques d'un sexe déclarations. En fin de compte, il est réglé par le biais de cette étude, les limites générales genre et les limites du roman autobiographique étudiés. Deuxièmement, nous allons essayer d'analyser la roman et en particulier le caractère de Michel Houellebecq et les stratégies littéraires utilisés par l'auteur pour être placé au centre de son livre. Ces analyses nous permettent d'atteindre notre troisième approche pour étudier ce qui implique de comprendre les motivations de l'auteur pour l'auto-écrit ou moins la suggestion de motivations

REGIONALIZAÇÃO DOS FINANCIAMENTOS ESTATAIS NO TERRITÓRIO BRASIL

Criado em 1952, o Banco Nacional de Desenvolvimento Econômico e Social participou ativamente das políticas de ordenamento territorial do Brasil, financiando diferentes setores como o industrial e de infra-estrutura. Neste período, a construção de sistemas de engenharia de grande porte promoveu novos fluxos de investimentos, mercadorias e pessoas, reestruturando o território brasileiro. O presente trabalho tem como objetivo analisar regionalmente os desembolsos do BNDEs no período 2002 – 2010 e apresentar possíveis concentrações espaciais. Com base em dados dos anuários e balanços do banco, a atual pesquisa é um prolongamento de um trabalho anterior sobre os 50 anos (1952 – 2001) de ordenamento territorial promovido pelo Estado brasileiro. Com cerca de R$400 bilhões, o BNDEs consolidou-se como uma das instituições mais importantes nas políticas de financiamento do país, com o objetivo de desfazer as desigualdades regionais. A tendência de desconcentração regional ocorre ainda lentamente, tendo em vista, ao processo histórico de concentração regional no sudeste do Brasil. Unidades da federação como São Paulo e Rio de Janeiro configuram-se como espaços privilegiados, apesar da tendência de recentes desconcentrações, como a região norte.