The rich cluster of galaxies ABCG 85. II. X-ray analysis using the ROSAT HRI

We present a new X-ray analysis mainly based on ROSAT HRI data. The HRI spatial resolution combined with an improved wavelet analysis method and with complementary radio and optical data provides new results compared to a previous paper based on ROSAT PSPC data (Pislar et al. 1997). We use also redshift data in order to identify galaxies dynamically belonging to the main body of the cluster and/or to superimposed substructures. Various kinds of emission are superimposed on a mean thermal X-ray emission due to the intra-cluster gas: a) an X-ray flux excess in the centre; b) a south blob, partially generated by individual galaxies. The mean velocity and velocity dispersion of the galaxies located in this region are the same as those of the cluster as a whole: it therefore does not seem to be a bound subgroup; c) West emission due to a foreground group with self-emission from a Seyfert galaxy located at the north-west; d) emission in the south-west due to inverse Compton emission associated to a very steep radio source (the remnant of an active galactic nucleus). We have examined the possibility for the central peak to be an "unusual" galaxy, as assumed for the central galaxy of J2310-43 (Tananbaum et al. 1997). We conclude on the existence of a cooling flow region, in which the presence of at least three small features certainly related to cooler blobs is revealed by the wavelet analysis. We have performed a pixel-to-pixel modelling of the double X-ray emission. The large scale emission component is comparable to those derived from by the PSPC data and the small scale one is interpreted as a cooling-flow. A multiphase gas model analysis leads to a mass deposit of 50-150 M_\odot/yr.Comment: 11 pages, 6 figures, 3 tables, LaTeX Accepted for publication in Astronomy & Astrophysics main journa

The rich cluster of galaxies ABCG 85.I. X-ray analysis

We present an X-ray analysis of the rich cluster ABCG 85 based on ROSAT PSPC data. By applying an improved wavelet analysis, we show that our view of this cluster is notably changed from what was previously believed (a main region and a south blob). The main emission comes from the central part of the main body of the cluster on which is superimposed that of a foreground group of galaxies. The foreground group and the main cluster are separated (if redshifts are cosmological) by 46 1/h_50 Mpc. The southern blob is clearly not a group: it is resolved into X-ray emitting galaxies (in particular the second more luminous galaxy of the main cluster). Several X-ray features are identified with bright galaxies. We performed a spectral analysis and derived the temperature (T), metallicity (Z) and hydrogen column density NH. The global quantities are: T=4keV (in agreement with the velocity dispersion of 760km/s) and $Z=0.2Z_\odot$. We cannot derive accurate gradients for these quantities with our data, but there is strong evidence that the temperature is lower ($\sim 2.8 keV$) and the metallicity much higher (Z $\sim 0.8 Z_\odot$) in the very centre (within about 50 1/h_50 kpc). We present a pixel by pixel method to model the physical properties of the X-ray gas and derive its density distribution. We apply classical methods to estimate the dynamical, gas and stellar masses, as well as the cooling time and cooling flow characteristics. At the limiting radius of the image (1.4 1/h_50 Mpc), we find $M_{\rm Dyn}\sim (2.1-2.9)10^{14} 1/h_50 M$_{\odot}$,$M_{gas}/M_{Dyn}\sim 0.18 h_{50}^{-1.5}$. The stellar mass is$6.7\ 10^{12}M_{\odot}$, giving a mass to light ratio of$M/L_{V}\sim 300$. The cooling time is estimated for different models, leading to a cooling radius of 30-80 kpc depending on theComment: 14 pages incl 16 postscript figures available, 4 tables, corrected stellar mass. Accepted for publication in Astronomy & Astrophysic

Avaliação da pinta-preta em progênies de mamoeiro no Estado do Ceará.

O mamoeiro é uma fruteira tropical de grande importância socioeconômica no Brasil e no mundo e o estado do Ceará destaca-se como o terceiro produtor brasileiro de mamão. A ocorrência de doenças é um dos fatores que contribuem para essa produtividade, por causarem perdas severas na cultura (VENTURA et al., 2003)

Caracterização de progênie híbrida de cajueiro-anão precoce quanto à infeccção de Lasiodiplodia theobromae.

bitstream/item/42203/1/BPD11002.pd

Análise genética em genótipos de manga rosa via REML/BLUP.

O objetivo desse trabalho foi realizar uma seleção precoce com base nas características agro-industriais dos genótipos que compõem a população base do programa de melhoramento da manga rosa da Embrapa Meio-Norte. Foi utilizado o procedimento padrão de avaliação genotípica REML/BLUP (máxima verossimilhança residual ou restrita/melhor predição linear não viciada) na estimação de componentes de variância e a predição dos valores genotípicos. As estimativas dos coeficientes de repetibilidade foram altos e medianos expressando grande estabilidade para as variáveis em diferentes frutos. As estimativas de repetibilidade individual variaram de 43% a 77%. Para obtenção de um coeficiente de determinação do valor genotípico de 90% são necessárias 10, 5 e 3 medições, para os caracteres com repetibilidade individuais de 43%, 65% e 77%, respectivamente. As variáveis massa do fruto e massa da polpa apresentaram altas correlações genéticas com as variáveis comprimento e diâmetro maior e menor do fruto. Estas podem ser tomadas para seleção indireta das primeiras que são de mensuração mais difícil. Ocorreu uma alteração no ordenamento dos genótipos entre as variáveis quanto aos ganhos genéticos como reflexo da correlação genotípica de baixa a média magnitude exceção feita para as variáveis massa do fruto e massa da polpa e entre sólidos solúveis totais ( ?Brix) e pH

Prostatic carcinomas with neuroendocrine differentiation diagnosed in needle biopsies, a morphologic study of 7 cases among 465 sequential biopsies in a tertiary cancer center

Purpose: Neuroendocrine carcinomas (NEC) of the prostate are rare, with only a few series hitherto reported. the objective of this study was to assess in a single institution the clinical and morphologic characteristics of neuroendocrine carcinomas diagnosed in needle core biopsies.Materials and Methods: the current study analyses seven cases diagnosed in needle biopsies at a large tertiary regional cancer center from Northeastern Brazil. Two pathologists reviewed specimens retrospectively, and demographic and morphologic characteristics were compared to 458 acinar tumors diagnosed in the same period.Results: There were five small cell carcinomas and two low-grade neuroendocrine carcinomas (carcinoid). NEC were associated with an acinar component in 5/7 cases and the Gleason score of the acinar component was always > 6. the number of cores involved in prostates with NEC was greater (65% compared to 24% of acinar tumors, p < 0.05). the mean PSA at diagnosis was 417.7 (range 5.7-1593, SD 218.3), compared to 100.5 (p = 0.1) of acinar tumors (range 0.3-8545, SD 22.7). Prostates harboring NEC were bigger (p < 0.001, mean volume 240 mL vs. 53 mL of acinar tumors). Treatment of NEC included palliative surgery, chemotherapy, and hormonal therapy.Conclusions: NEC of the prostate is rare and often associated with a high-grade acinar component. Prostates with NEC tend to be larger and involve a greater number of cores than acinar tumors. PSA at diagnosis does not seem to predict the presence of NE tumors in needle biopsy.Hosp Canc, Inst Canc Ceara, BR-60430230 Fortaleza, Ceara, BrazilEscola Paulista Med, BR-04023 São Paulo, BrazilEscola Paulista Med, BR-04023 São Paulo, BrazilWeb of Scienc