Results 31 to 40 of about 586,382 (179)

Radial variation of fiber morphology and wood density of the commercial species Drypetes sp. and Myroxylon balsamum

Maderas: Ciencia y Tecnología
Studying the radial variation of wood density, an essential biophysical property that reflects the quality of commercial species in tropical forests, is crucial. Understanding how these variations relate to wood anatomy provides valuable insights.
Leif Armando Portal Cahuana, German Payeza Tuesta, Erick Alberto Grandez Piña, Marcus Vinicius Stenico da Silva, Mario Tomazello   +4 more
doaj   +1 more source

Pulsational line profile variation of the roAp star HR 3831

, 2005
We report the first comprehensive investigation of the line profile variation caused by non-radial pulsation in a magnetic oscillating chemically peculiar star. Spectrum variation of the well-known roAp star HR 3831 is detected using very high-resolution
Aerts, Baade, Baldry, Baldry, Baldry, Baldry, Balona, Balona, Balona, Bigot, Cunha, Cunha, Dziembowski, Elkin, Hurly, Kanaan, Kochukhov, Kochukhov, Kochukhov, Kochukhov, Kochukhov, Kochukhov, Kochukhov, Kupka, Kurtz, Kurtz, Kurtz, Kurtz, Kurtz, Kurtz, Libbrecht, Martinez, Mashonkina, Mathys, Mathys, Matthews, Matthews, Mkrtichian, O. Kochukhov, Piskunov, Polosukhina, Roberts, Ryabchikova, Saio, Saio, Savanov, Schrijvers, Shavrina, Shibahashi, Telting, Telting, Thompson, Watson   +52 more
core   +2 more sources

Variação anatômica radial do lenho de açoita-cavalo (Luehea divaricata) e sua influência na densidade aparente. Radial variation of wood anatomy in açoita-cavalo (Luehea divaricata) and its influence on the specific gravity. [PDF]

Revista do Instituto Florestal, 2009
Variações entre as dimensões e frequênciasdas células da madeira existem entre espéciesdiferentes, entre indivíduos da mesma espécie ouainda dentro da mesma árvore nas direções radial eaxial.
Eduardo Luiz LONGUI, Israel Luiz de LIMA, Sandra Monteiro Borges FLORSHEIM, Alaor BUFOLO   +3 more
doaj  

PASTIS: Bayesian extrasolar planet validation II. Constraining exoplanet blend scenarios using spectroscopic diagnoses

, 2015
The statistical validation of transiting exoplanets proved to be an efficient technique to secure the nature of small exoplanet signals which cannot be established by purely spectroscopic means.
Almenara, J. -M., Bouchy, F., Deleuil, M., Díaz, R. F., Figueira, P., Hébrard, G., Moutou, C., Rodionov, S., Santerne, A., Santos, N. C.   +9 more
core   +3 more sources

Intrinsic rotation in tokamaks: theory [PDF]

, 2015
Self-consistent equations for intrinsic rotation in tokamaks with small poloidal magnetic field $B_p$ compared to the total magnetic field $B$ are derived.
Barnes, Michael, Parra, Felix I.
core   +1 more source

Caracterização do lenho e variação radial de Pittosporum undulatum Vent. (pau-incenso)

Hoehnea
Estudou-se o lenho de Pittosporum undulatum do Parque Estadual Alberto Löfgren, objetivando-se sua caracterização, investigar a variação radial da anatomia e densidade básica, suas correlações e discutir os resultados em um contexto ecológico. Empregaram-
Eduardo Luiz Longui, Diego Romeiro, Morgana Tramontini da Silva, Ariane Ribeiro, Tatiana Cestini Gouveia, Israel Luiz de Lima, Sandra Monteiro Borges Florsheim   +6 more
doaj   +1 more source

Influence of the slope of terrain on the spatial variability of the wood density within Eucalyptus trees [PDF]

, 2012
The aim of this study was to understand how contrasting environments influence the wood formation in Eucalyptus clones and the effect on wood density and spatial variability.
Brancheriau, Loïc, Chaix, Gilles, Hein, Paulo Ricardo Gherardi, Lima, Jose Tarcisio, Moreira da Silva, Jose Reinaldo, Trugilho, Paulo Fernando   +5 more
core  

Radial velocity measurements of the pulsating zirconium star: LS IV -14 116

, 2014
The helium-rich hot subdwarf LS IV -14 116 shows remarkably high surface abundances of zirconium, yttrium, strontium, and germanium, indicative of strong chemical stratification in the photosphere.
Ahmad, Amir, Jeffery, C. Simon, Kerzendorf, Wolfgang, Neelamkodan, Naslim   +3 more
core   +1 more source

Planets around active stars

, 2007
We present the results of radial velocity measurements of two samples of active stars. The first sample contains field G and K giants across the Red Giant Branch, whereas the second sample consists of nearby young stars (d < 150 pc) with ages between 10 -
A.P. Hatzes, A.P. Hatzes, A.P. Hatzes, D. Queloz, G.W. Henry, J. Setiawan, J. Setiawan, J. Setiawan, J. Setiawan, J. Setiawan, S. Frink, S. L da   +11 more
core   +1 more source

Evaluation of Approximate Expressions to Calculate the Area of the Intersection between a Sphere and a Cylindrical Plane

Powders, 2022
Cylindrical packed beds of spheres are found in many industrial and practical applications where heat and mass transfer and fluid flow occur. A proper understanding of the porous structure is imperative for the analysis and design of the performance of ...
Charl Gabriël Du Toit
doaj   +1 more source