PAOLA TALIA¹ , EDUARDO J. GREIZERSTEIN¹ , H. ESTEBAN HOPP^1,2 , NORMA PANIEGO¹ , LIDIA POGGIO2 AND RUTH A. HEINZ^1,2*

BIOCELL, Vol.35, No.1, pp. 19-28, 2011, DOI:10.32604/biocell.2011.35.019

Abstract Bacterial artificial chromosome - fluorescence in situ hybridization (BAC-FISH) and cyclingprimed in situ labeling (C-PRINS) techniques were evaluated for integration of physical and genetic maps of sunflower (Helianthus annuus L.). Single-site SSR markers were selected from three linkage groups of a high-density sunflower genetic map. This selection was based on previously identified QTL associated to S. sclerotiorum. These markers were used to select BACs contaning single copy sequences for BAC-FISH aplication. Blocking of highly dispersed repetitive sunflower sequences reduced unspecific hybridization, and allowed the detection of specific signals for BACs containing SSR markers HA4222 and HA2600, anchored to LG More >

Farhad H. Aziz

Phyton-International Journal of Experimental Botany, Vol.80, pp. 35-46, 2011, DOI:10.32604/phyton.2011.80.035

Abstract Samples and specimens of mosses were collected in different parts of Erbil, Sulaimani, Duhok and Even Kirkuk provinces in Iraq Kurdistan Region, since 1998 to April 2010. This collection could be taken as the representative species of mosses on the soil surface, rocks and tree barks of either terrestrial and aquatic habitats of foothills, mountains and plains. A total of 67 species distributed in 32 genera, 16 families and 9 orders were found. Among them there were 17 species in 10 genera, the 2 families Schistogaceae and Ephemeraceae and the single order Schistostegales. The rarest More >

Wen-Hwa Chen, Chun-Hung Wu, Hsien-Chie Cheng

The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.3, pp. 97-98, 2011, DOI:10.3970/icces.2011.017.097

Abstract The phase transformation behaviors of C60 fullerene under atmospheric pressure are reported using a proposed thermostat molecular dynamics method designed for a solid system. We find that C60 fullerene directly undergoes a solid-vapor phase transformation, instead of a solid-liquid phase transition, at a specific threshold temperature. It reveals that C60 fullerene will sublimate when heated rather than melt under atmospheric pressure. This phenomenon is coincident with that of graphite at pressures below 10MPa. The sublimation point of C60 fullerene, rather than the melting, is about 4350o20K, locating in the published range of about 4000-4500K for More >

Wen-Hwa Chen^1,2, Chun-Hung Wu¹, Hsien-Chie Cheng^3,4,5

CMC-Computers, Materials & Continua, Vol.25, No.3, pp. 195-214, 2011, DOI:10.3970/cmc.2011.025.195

Abstract The study aims at investigating the linear and volumetric thermal expansion coefficients (CTEs) at temperature below the Debye temperature and phase transformation behaviors at atmospheric pressure of carbon fullerenes, i.e., C₆₀, C₇₀ and C₈₀, through a modified Nosé-Hoover (NH) thermostat method incorporated with molecular dynamics (MD) simulation. The calculated results are compared with those obtained from the standard NH and "massive" NHC (MNHC) thermostats and also with the literature experimental and theoretical data. Results show that at temperature below the Debye temperature, the CTEs of the fullerene molecules would significantly decrease with a decreasing temperature and tend… More >

GRACIELI DALLA NORA¹, TAMARA PASTORI¹, HAYWOOD DAIL LAUGHINGHOUSE IV^2,3, THAIS SCOTTI DO CANTO-DOROW¹, SOLANGE BOSIO TEDESCO^1*

BIOCELL, Vol.34, No.3, pp. 95-102, 2010, DOI:10.32604/biocell.2010.34.095

Abstract Mikania glomerata is a plant used in Brazilian traditional medicine, known as ‘guaco’. It possesses anti-inflammatory properties and the aqueous extracts of its leaves are indicated for the treatment of diseases of the respiratory tract. This study aimed at evaluating the antiproliferative and genotoxic effect of Mikania glomerata leaf infusions on the cell cycle of onion. The material used was collected in the native environment from Rio Grande do Sul State, Brazil. Aqueous extracts through infusions were prepared in two concentrations: 4g/L (usual concentration) and 16g/L (4x more concentrated) of each of the populations. Two groups of… More >

E. A. Semma¹, M. El Ganaoui², V. Timchenko³, E. Leonardi³

FDMP-Fluid Dynamics & Materials Processing, Vol.6, No.3, pp. 233-250, 2010, DOI:10.3970/fdmp.2010.006.233

Abstract The effects of oscillatory heating on thermosolutal convection in a cavity heated from below are investigated and discussed. The transient Navier-Stokes equations coupled with heat and mass balances are solved numerically by using a control-volume technique. It is assumed that the interface moves with constant growth velocity. The results show the presence of multiple solutions in response to simultaneous vertical temperature and species concentration gradients applied to the system. In particular, two critical frequencies are identified, one corresponding to low values of the buoyancy ratio N (N~1), accompanied with a decrease of flow intensity reaching More >

Shadia J Ikhmayies¹, Naseem M. Abu El-Haija², Riyad N. Ahmad-Bitar³

FDMP-Fluid Dynamics & Materials Processing, Vol.6, No.2, pp. 219-232, 2010, DOI:10.3970/fdmp.2010.006.219

Abstract Large area and highly uniform polycrystalline ZnO thin films have been produced by a spray pyrolysis (SP) technique resorting to a customized system (spraying) on glass substrates at temperature Ts= 450℃. This study deals with the related investigation about the influence of heat treatment (in nitrogen atmosphere) on the resulting properties (electrical, optical and structural) of such films. Properties are analyzed by means of I-V plots, transmittance curves, X-Ray diffractograms (XRD) and scanning electron microscope (SEM) micrographs. Results show that the resistivity of the films decreases from about 200W.cm for the as-deposited films to about… More >

E.J. Sapountzakis¹, J.A. Dourakopoulos¹

CMC-Computers, Materials & Continua, Vol.18, No.2, pp. 121-154, 2010, DOI:10.3970/cmc.2010.018.121

Abstract In this paper a boundary element method is developed for the nonlinear flexural - torsional analysis of Timoshenko beam-columns of arbitrary simply or multiply connected constant cross section, undergoing moderate large deflections under general boundary conditions. The beam-column is subjected to the combined action of an arbitrarily distributed or concentrated axial and transverse loading as well as to bending and twisting moments. To account for shear deformations, the concept of shear deformation coefficients is used. Seven boundary value problems are formulated with respect to the transverse displacements, to the axial displacement, to the angle of… More >

Hsien-Chie Cheng¹, Chun-Hung Wu², Yang-Lun Liu², Wen-Hwa Chen²

The International Conference on Computational & Experimental Engineering and Sciences, Vol.11, No.3, pp. 65-66, 2009, DOI:10.3970/icces.2009.011.065

Abstract This study attempts to explore the thermal effect on the vibrational behaviors of single-walled carbon nanotube (SWCNT) using both a constant temperature molecular dynamics (MD) simulation that incorporates a Nosé-Hoover thermostat and a modified molecular structure mechanics (MMSM) model. The MD simulation is combined with a Nosé-Hoover thermostat, which controls the temperature of the system by an additional thermal reservoir. On the other hand, the MMSM model adopts equivalent beam elements and spring elements to simulate the bonding and non-bonding interactions between atoms, respectively, where the effect of temperatures can be also taken into account… More >

Sen Yung Lee¹, Jyh Shyang Wu²

CMES-Computer Modeling in Engineering & Sciences, Vol.40, No.2, pp. 133-154, 2009, DOI:10.3970/cmes.2009.040.133

Abstract The three coupled governing differential equations for the in-plane vibrations of curved non-uniform Timoshenko beams are derived via the Hamilton's principle. Three physical parameters are introduced to simplify the analysis. By eliminating all the terms with the axial displacement parameter, then reducing the order of differential operator acting on the flexural displacement parameter, one uncouples the three governing characteristic differential equations with variable coefficients and reduces them into a sixth-order ordinary differential equation with variable coefficients in term of the angle of the rotation due to bending for the first time. The explicit relations between More >