Oferta Pública de Adquisición OPA como estrategia administrativa

Establecer una metodología empresarial para la realización de una de las formas de adquisición, las Ofertas Públicas de Adquisición (OPAs), partiendo de los aspectos jurídico y financiero

Dynamic viscosity of ternary mixtures of dichlorodifluoromethane (R-12), chlorodifluoromethane (R-22), and dichlorotetrafluoroethane (R-114) vapors

The viscosities of ternary mixtures of R-12, R-22, and R-114 vapors were determined at ambient temperature and pressure within +-1% by using an oscillating disk viscometer. The empirical viscosity obtained by Wllke's equation compares very well with the experimental results obtained with this vlscometer. In the case of this ternary vapor mixture, as long as the molar fraction ratio of R-12 to R-114 Is maintained at approximately 2"' (=Inverse ratio of thelr molecular weights) the viscosity of the ternary mixture at ambient temperature and pressure remalns constant irrespective of the percentage of R-22 present in the mixture.

First simultaneous measurement of the top quark mass in the lepton+jets and dilepton channels at CDF

We present a measurement of the mass of the top quark using data corresponding to an integrated luminosity of 1.9fb^-1 of ppbar collisions collected at sqrt{s}=1.96 TeV with the CDF II detector at Fermilab's Tevatron. This is the first measurement of the top quark mass using top-antitop pair candidate events in the lepton + jets and dilepton decay channels simultaneously. We reconstruct two observables in each channel and use a non-parametric kernel density estimation technique to derive two-dimensional probability density functions from simulated signal and background samples. The observables are the top quark mass and the invariant mass of two jets from the W decay in the lepton + jets channel, and the top quark mass and the scalar sum of transverse energy of the event in the dilepton channel. We perform a simultaneous fit for the top quark mass and the jet energy scale, which is constrained in situ by the hadronic W boson mass. Using 332 lepton + jets candidate events and 144 dilepton candidate events, we measure the top quark mass to be mtop=171.9 +/- 1.7 (stat. + JES) +/- 1.1 (syst.) GeV/c^2 = 171.9 +/- 2.0 GeV/c^2.

High Rydberg state carbon recombination lines toward Cassiopeia A: 332 MHz VLA observations and comparison with H I and molecular lines

We present observations of the C270alpha carbon recombination line, 21 cm neutral hydrogen line and (CO)-C-12 (J = 1 --> 0) molecular line toward Cas A. A comparison of the distribution of recombination line optical depths over the face of Cas A with that of H I optical depths and molecular line emission favors the association of C270alpha regions with H I rather than molecular clouds. The association makes it possible to self-consistently determine several physical parameters of the clouds by combining the recombination line and 21 cm H I measurements.

Sapientia, 1974, Vol. XXIX, nº 114 (número completo)

Contenido: Tomás de Aquino en su VII centenario / Gustavo Eloy Ponferrada – Santo Tomás y los capítulos generales de la orden de los Hermanos Predicadores, 1278-1370 / J. E. Bolzán ; Azucena A. Fraboschi – Jacques Chevalier et le Thomisme / Alain Guy – Notas y comentarios -- Bibliografía

Diário da Constituinte [gravação de vídeo] : [programa n. 332]

Mulheres de todo o país avaliam o projeto de Constituição, e consideram que ainda há muito que conquistar. Contudo, a Coordenadora da Comissão, Maria A. Schumaher destaca os avanços obtidos pelas mulheres como a licença-maternidade de 120 (cento e vinte) dias, creche para crianças de 0 a 6 anos, a livre decisão do casal do número de filhos, o direito de amamentar adquirido pelas presidiárias e a discriminação por sexo, considerada crime inafiançável. A Presidente do Conselho da Mulher, Jaqueline Pitanguy, espera que o Plenário acate a proposta de que a família no Brasil é constituída também pela união estável, e assegure a plena igualdade de direitos e deveres entre os cônjuges. A representante do Movimento Mulher/BA, Maria Lina Silva, solicita a todo cidadão que cobrem dos parlamentares a efetivação das conquistas alcançadas. Adiada a votação do substitutivo que muda o regimento da Constituinte. Os líderes tentam chegar a um acordo para evitar o confronto dos grupos no plenário. O Deputado José Maria Eymael (PDC-SP) afirma que o momento é de entendimento, que atenda aos anseios de toda sociedade representada na Assembleia Nacional Constituinte (ANC). O Senador Fernando Henrique Cardoso (PMDB-SP) declara que após o Centrão atender ao seu pedido de adiamento da sessão, será realizado um trabalho de aprovação de medidas do regimento que viabilize uma votação mais célere e expresse realmente a vontade de todos. Segundo Roberto Cardoso Alves (PMDB-SP), o presidente Ulysses Guimarães, declarou ao conhecer alguns dos pontos críticos do Centrão, que muitos desses pontos também são considerados críticos pela esquerda, e isso facilitará um entendimento. O Deputado José Costa (PMDB-AL) considera fundamental a constatação que nenhum grupo tem 280(duzentos e oitenta) votos para decidir qualquer matéria Constitucional, então, será através da negociação que será elaborada a Constituição, equacionando temas como reforma agrária, reforma tributária e sistema de governo. A executiva do PFL se reuniu para traçar diretrizes. O vice-presidente do partido Eraldo Tinoco (PFL-BA) ficou encarregado de discutir com todos os parlamentares do PFL, para que o partido fixe posição sobre os pontos polêmicos do projeto de Constituição, como o sistema de governo. Discutiu-se também o substitutivo do Centrão que altera o regimento da Constituinte. O presidente do partido, o Senador Marco Maciel (PFL-PE) relata que assinou o documento do Centrão, mas não tinha conhecimento de outros objetivos do substitutivo além de mudar o regimento.

Diário da Constituinte [gravação de vídeo] : [programa n. 114]

A Assembleia Nacional Constituinte (ANC) propõe ao idoso aposentadoria integral, com valor igual ao maior salário do último ano de trabalho. Arnaldo Faria de Sá (PTB-SP) concorda com a proposta. Eduardo Moreira (PMDB-SC) diz que o aposentado será lembrado nesta Constituição, de tal forma que mantenha seu poder aquisitivo. Com relação ao tempo de serviço necessário para a aposentadoria, não houve inovações. Geraldo Alckmin (PMDB-SP) diz que a Constituinte estabeleceu o Sistema Único de Previdência Social e o Sistema Único de Saúde, através do INAMPS, para fazer justiça ao trabalhador rural e fixar o homem no campo. Na sessão O Povo Pergunta, cidadão quer saber o que os constituintes vão fazer em relação a pobreza. Ruberval Piloto (PDS-SC) responde que, para sanar a pobreza, é necessário dar um salário mais justo para a parte menos assistida da população, garantir cidadania social (casa, terra e comida) e melhor distribuição de renda entre a União, Estados e Municípios. A Comissão de Sistematização realizou a primeira reunião para discutir o anteprojeto de Constituição. A ausência do Relator Bernardo Cabral (PMDB-AM) impediu a discussão do anteprojeto. José Genoíno (PT-SP) diz que é impossível discutir o anteprojeto sem o relatório. José Richa (PMDB-PR) relata que o anteprojeto está fora da realidade, como é o caso da estabilidade no emprego após 90 dias de trabalho. Vivaldo Barbosa (PDT-RJ) está preocupado com alguns temas, como a questão do direito de propriedade e da reforma agrária. Nelson Jobim (PMDB-RS) explica que o anteprojeto é uma síntese do que foi aprovado nas comissões e, neste momento, não é possível fazer alterações.

Olympic Coast National Marine Sanctuary Habitat Mapping: Survey report and classification of side scan sonar data from surveys HMPR-114-2004-02 and HMPR-116-2005-01.

The Olympic Coast National Marine Sanctuary (OCNMS) continues to invest significant resources into seafloor mapping activities along Washington’s outer coast (Intelmann and Cochrane 2006; Intelmann et al. 2006; Intelmann 2006). Results from these annual mapping efforts offer a snapshot of current ground conditions, help to guide research and management activities, and provide a baseline for assessing the impacts of various threats to important habitat. During the months of August 2004 and May and July 2005, we used side scan sonar to image several regions of the sea floor in the northern OCNMS, and the data were mosaicked at 1-meter pixel resolution. Video from a towed camera sled, bathymetry data, sedimentary samples and side scan sonar mapping were integrated to describe geological and biological aspects of habitat. Polygon features were created and attributed with a hierarchical deep-water marine benthic classification scheme (Greene et al. 1999). For three small areas that were mapped with both side scan sonar and multibeam echosounder, we made a comparison of output from the classified images indicating little difference in results between the two methods. With these considerations, backscatter derived from multibeam bathymetry is currently a costefficient and safe method for seabed imaging in the shallow (<30 meters) rocky waters of OCNMS. The image quality is sufficient for classification purposes, the associated depths provide further descriptive value and risks to gear are minimized. In shallow waters (<30 meters) which do not have a high incidence of dangerous rock pinnacles, a towed multi-beam side scan sonar could provide a better option for obtaining seafloor imagery due to the high rate of acquisition speed and high image quality, however the high probability of losing or damaging such a costly system when deployed as a towed configuration in the extremely rugose nearshore zones within OCNMS is a financially risky proposition. The development of newer technologies such as intereferometric multibeam systems and bathymetric side scan systems could also provide great potential for mapping these nearshore rocky areas as they allow for high speed data acquisition, produce precisely geo-referenced side scan imagery to bathymetry, and do not experience the angular depth dependency associated with multibeam echosounders allowing larger range scales to be used in shallower water. As such, further investigation of these systems is needed to assess their efficiency and utility in these environments compared to traditional side scan sonar and multibeam bathymetry. (PDF contains 43 pages.)

Some observations on the temporal variations of size of copepods and some answers to questions on their biology. [Translation from: Internationale Revue der Gesamten Hydrobiologie und Hydrographie 17 99-114, 1927.]

Until now observations on the temporal variation of size of freshwater copepods have not provided much information. Other observers only mention in passing this or that phenomenon from which it is possible to deduct termporal variations. In this study Cyclops strenuus s.l., a freshwater species of fairly wide distribution, is studied in two water bodies. The author studies the systematic, placing of inhabitants described as C. strenuus Fischer in both locations, their annual life cycle, and their annual size variations.

Respiration and the efficiency of energy during embryonic development of Asellus aquaticus L. (Crustacea) [Translation from: Vestsi Akademii Navuk Belorusskoi SSR, Seriya Biyal. 1978(5) 112-114, 1978]

Experimental studies were carried out on the transformation of matter and energy during embryonic development of the isopod Crustacea Asellus aquaticus L. under two constant temperatures. Material for the experiments was collected in the quarry lakes of the Kurasovshchin-zone (city-Minsk) at 9°C in April and at 18°C in June, 1977. The rate of consumption of oxygen per specimen by eggs and embryos of Asellus aquaticus was observed and dynamics of the basic biological characteristics during embryonic development studied.

Observations on the physiological development of trout eggs [Translation from: Roux. Arch. f. Entwicklungsmechanik der Organismen, 114. 771, 1929]

The osmotic pressure of the perivitelline fluid and the yolk of trout (Salmo trutta) eggs were measured separately by the Drucker-Schrein method. The permeability of the egg membrane and the variations in the osmotic pressure of the eggs when placed in salt solutions were also investigated.

Production of new superheavy Z=108-114 nuclei with U-238, Pu-244, and Cm-248,Cm-250 targets

Within the framework of the dinuclear system (DNS) model, production cross sections of new superheavy nuclei with charged numbers Z=108-114 are analyzed systematically. Possible combinations based on the actinide nuclides U-238, Pu-244, and Cm-248,Cm-250 with the optimal excitation energies and evaporation channels are pointed out to synthesize new isotopes that lie between the nuclides produced in the cold fusion reactions and the Ca-48-induced fusion reactions experimentally, which are feasible to be constructed experimentally. It is found that the production cross sections of superheavy nuclei decrease drastically with the charged numbers of compound nuclei. Larger mass asymmetries of the entrance channels enhance the cross sections in 2n-5n channels.