VICTOR BENNO MEYER-ROCHOW^1,2,*, MONALISA MISHRA¹

BIOCELL, Vol.33, No.2, pp. 115-120, 2009, DOI:10.32604/biocell.2009.33.115

Abstract We are describing a rhabdom organization of the eye of the chrysanthemum beetle Phytoecia rufiventris that to date has not been described from any other insect. In cerambycid beetles free rhabdomeres, forming a circular, open rhabdom, surround a central rhabdom made up of the rhabdomeres of one or two cells. In Phytoecia rufiventris the central rhabdomeres are missing throughout the eye and the microvilli of the outer 6 rhabdomeres are regularly oriented in three directions. Following the classification of rhabdom types suggested by Wachmann (1979), we suggest to name the rhabdom arrangement seen in the retina of Phytoecia More >

MATÍAS PANDOLFI*, MAXIMILIANO M. CÁNEPA, FERNANDO J. MEIJIDE, FELIPE ALONSO, GRACIELA REY VÁZQUEZ, M. CRISTINA MAGGESE, PAULA G. VISSIO

BIOCELL, Vol.33, No.1, pp. 1-18, 2009, DOI:10.32604/biocell.2009.33.001

Abstract Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easy breeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of the fundamental aspects of its reproductive and developmental biology have been addressed in our laboratory. Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and in background color adaptation has been described in both adult and developing individuals, and the role of FSH in ovarian differentiation has been established. These findings have been correlated with mapping of some of their brain-derived controlling hormones. The latter include More >

Emil Budescu¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.11, No.1, pp. 17-18, 2009, DOI:10.3970/icces.2009.011.017

Abstract For the visco-plastic materials of type Bingham fluid, like granular materials, the process of flow begins when the force F^ˉ, which variation is presented in figure 1, reaches the minimum value of shearing limit. More >

Chein-Shan Liu¹, Satya N. Atluri²

CMES-Computer Modeling in Engineering & Sciences, Vol.43, No.3, pp. 253-276, 2009, DOI:10.3970/cmes.2009.043.253

Abstract Since the works of Newton and Lagrange, interpolation had been a mature technique in the numerical mathematics. Among the many interpolation methods, global or piecewise, the polynomial interpolation p(x) = a₀ + a₁x + ... + a_nxⁿ expanded by the monomials is the simplest one, which is easy to handle mathematically. For higher accuracy, one always attempts to use a higher-order polynomial as an interpolant. But, Runge gave a counterexample, demonstrating that the polynomial interpolation problem may be ill-posed. Very high-order polynomial interpolation is very hard to realize by numerical computations. In this paper we propose a… More >

R. Djebali^1,2, M. El Ganaoui^2,3, H. Sammouda¹, R. Bennacer⁴

FDMP-Fluid Dynamics & Materials Processing, Vol.5, No.3, pp. 261-282, 2009, DOI:10.3970/fdmp.2009.005.261

Abstract The simplified thermal lattice Boltzmann model (STLBM) developed by Peng, Shu and Chew (2003) is used in this work to simulate low-Rayleigh-number natural convection in a heated rectangular cavity on a uniform grid. It is shown how by resorting to the double populations approach both hydrodynamic and thermal fields can be effectively simulated. Furthermore, a general benchmark is carried out to account for the effect of different parameters in relatively wide ranges. Results are compared with previous works available in the literature. More >

PATRÍCIA CARVALHO DE SOUZA, ANDRÉ SALIM KHAYAT, IGOR CHAMON SELIGMANN, ROMMEL MARIO RODRÍGUEZ BURBANO

BIOCELL, Vol.32, No.2, pp. 207-210, 2008, DOI:10.32604/biocell.2008.32.207

Abstract The collared peccary (Tayassu tajacu) is widely distributed over the American continent, being found from the south of the USA to the north of Argentina. In Brazil, it is spread all over the country, being one of the potential species to be raised in captivity. Therefore, the cytogenetic techniques could be a potential tool for reproductive monitoring of animals raised in captivity, mainly when destined for commercial purposes. This study had the objective of determining the chromosome number of two populations raised in captivity and characterizing them by GTG banding. For this purpose, an analysis was… More >

Sacristán M, AM Millanes, B Fontaniella, ME Legaz, C Vicente

Phyton-International Journal of Experimental Botany, Vol.77, pp. 253-262, 2008, DOI:10.32604/phyton.2008.77.253

Abstract Secreted arginases from Evernia prunastri and Xanthoria parietina thalli, exhibiting lectin activity, have been purified to homogeneity. Analyses of both amino acid and glycoside composition are reported. Purified proteins have been subjected to tryptic digestion and some amino acid sequences have been analyzed. An undecapeptide from Evernia arginase, which shows some degree of homology with the domain to which Mn²⁺ binds, a heptapeptide and an undecapeptide from Xanthoria arginase have been analyzed, and homologies with some arginases from other fungi and plants have been found. More >

Giménez¹ C, E de García², O Haddad³

Phyton-International Journal of Experimental Botany, Vol.77, pp. 65-79, 2008, DOI:10.32604/phyton.2008.77.065

Abstract Evaluation of clonal micropropagation and phenotype stability of elite somaclones are critical steps for development of new varieties. In the present work somaclon variant CIEN BTA-03 (resistant to Black Sigatoka), obtained through in vitro process from cultivar Williams (susceptible to Black Sigatoka), was micropropagated via apical shoot culture for five multiplication cycles in 0.5 mg/l of benzyl-aminopurine (BA). To verify the genetic stability of the progeny of this elite material, random amplified polymorphic DNA (RAPD) markers were used. A total of 5,292 monomorphic bands were obtained from the amplification of fifty six DNA samples (extracted from More >

Menéndez-Yuffá¹ A, L Ríos-Bolívar²

Phyton-International Journal of Experimental Botany, Vol.77, pp. 49-64, 2008, DOI:10.32604/phyton.2008.77.049

Abstract Regeneration and multiplication of coffee (Coffea arabica L.) through somatic embryogenesis can be efficiently achieved through different methods. However, it is very important to analyze the progenies obtained by these methods in order to establish their genetic stability. The objectives of this research were (1) to determine the protein electrophoretic patterns in leaves of coffee vitroplants which were regenerated through somatic embryogenesis, and (2) to compare these patterns with those of the explant donor plants. The protein patterns of some coffee genotypes were initially determined to detect possible differences among them. Each analyzed genotype showed a More >

Emil Budescu¹, Lucian Popescu², Ioan Iacob², Eugen Merticaru¹

The International Conference on Computational & Experimental Engineering and Sciences, Vol.8, No.3, pp. 85-90, 2008, DOI:10.3970/icces.2008.008.085

Abstract This article has no abstract. More >