Results 71 to 80 of about 10,314 (189)

Disparate and parallel craniofacial climatic adaptations in native populations of Asia, North America, and South America

Journal of Anatomy, Volume 245, Issue 5, Page 699-724, November 2024.
This study examines the influence of climate on human evolution using a large dataset (>2500 individuals) and combines morphometric analysis, genomic data, and various statistical techniques. It reveals distinct morphological traits in cold‐region populations, like increased nasal height and reduced facial protrusion, but also differences such as those
Andrej Evteev, Taisiya Syutkina, Alexandra Grosheva, Patrícia Santos, Silvia Ghirotto, Tsunehiko Hanihara, Mark Hubbe, Lumila Paula Menéndez   +7 more
wiley   +1 more source

Species delimitation in Xanthium sect. Acanthoxanthium (Heliantheae, Asteraceae) and the neglected species Xanthium argenteum

TAXON, Volume 73, Issue 5, Page 1251-1271, October 2024.
Abstract Xanthium is a genus of annual herbaceous plants that stands out within Asteraceae for being wind‐pollinated, diclinous monoecious, and bearing solitary pistillate flowers in peculiar spiny structures (burs). Xanthium sect. Acanthoxanthium is native to South America and characterized by the presence of trifurcate spines at the base of the ...
Eleonora Manzo, Sebastian Nillies, Diego G. Gutiérrez, José L. Panero, Christian Bräuchler, Salvatore Tomasello   +5 more
wiley   +1 more source

Submillimeter observing conditions on Cerro Chajnantor [PDF]

, 2008
Consistently superb observing conditions are crucial for achieving the scientific objectives of a ground based telescope. For observations at submillimeter wavelengths, choosing a site with very little atmospheric water vapor is paramount.
Giovanelli, Riccardo, Gull, George E., Henderson, Charles P., Radford, Simon J. E.   +3 more
core  

Violence indicators in Quebrada de Humahuaca, Jujuy, Argentina: The Regional Development Period from a regional perspective [PDF]

, 2014
Quebrada de Humahuaca (Jujuy, Argentina) has been extensively studied by archaeologists. Studies have been focused mainly on the Late Regional Development Period (1250 1430 AD), which has been defined as a time of social conflict.
Botta, Florencia Natalia, Seldes, Verónica   +1 more
core   +1 more source

Soil carbon and nitrogen cycling at the atmosphere–soil interface: Quantifying the responses of biocrust–soil interactions to global change

Global Change Biology, Volume 30, Issue 10, October 2024.
Despite the critical role of biological soil crusts (biocrusts) in dryland C and N cycles, little is known about how biocrust‐derived C and N move into the soil. This study reveals how biocrusts facilitate the downward movement of C and N and drive the formation of mineral‐associated organic matter in subcrust soils.
K. Witzgall, B. D. Hesse, N. L. Pacay‐Barrientos, J. Jansa, O. Seguel, R. Oses, F. Buegger, J. Guigue, C. Rojas, K. Rousk, T. E. E. Grams, N. Pietrasiak, C. W. Mueller   +12 more
wiley   +1 more source

Aguas, riego y cultivos: cambios y permanencias en los ayllus de San Pedro de Atacama

Estudios Atacameños, 2015
El agua ha sido vital en el desarrollo histórico en los ayllus de San Pedro de Atacama, regados por los ríos San Pedro y Vilama. Los aportes hí­dricos de estos ríos han venido disminuyendo desde la década de 1940 en adelante, lo que ha supuesto cambios ...
Isabel Sepúlveda Rivera, Raúl Molina Otárola, María del Mar Delgado-Serrano, José Emilio Guerrero Ginel   +3 more
doaj   +8 more sources

Alucinaciones en circulación : una mirada a la interacción surandina tardía desde las tabletas y tubos de La Paya (Valle Calchaquí, Salta) [PDF]

, 2010
Este trabajo presenta los resultados del estudio de las tabletas y tubos de inhalación de La Paya y otros sitios del valle Calchaquí y del análisis comparativo de esos artefactos con aquellos de otras regiones del Noroeste argentino y los Andes del Sur ...
Sprovieri, Marina
core  

The Atacama Cosmology Telescope: The polarization-sensitive ACTPol instrument [PDF]

, 2016
The Atacama Cosmology Telescope (ACT) is designed to make high angular resolution measurements of anisotropies in the Cosmic Microwave Background (CMB) at millimeter wavelengths.
Ade, P. A. R., Aiola, S., Amiri, M., Angile, F. E., Beall, J. A., Becker, D. T., Cho, H-M., Choi, S. K., Corlies, P., Coughlin, K. P., Datta, R., Devlin, M. J., Dicker, S. R., Dunner, R., Fowler, J. W., Fox, A. E., Gallardo, P. A., Gao, J., Grace, E., Halpern, M., Hasselfield, M., Henderson, S. W., Hilton, G. C., Hincks, A. D., Ho, S. P., Hubmayr, J., Irwin, K. D., Klein, J., Koopman, B., Li, Dale, Louis, T., Lungu, M., Maurin, L., McMahon, J., Munson, C. D., Naess, S., Nati, F., Newburgh, L., Nibarger, J., Niemack, M. D., Niraula, P., Nolta, M. R., Page, L. A., Pappas, C. G., Schillaci, A., Schmitt, B. L., Sehgal, N., Sievers, J. L., Simon, S. M., Staggs, S. T., Thornton, R. J., Tucker, C., Uehara, M., van Lanen, J., Ward, J. T., Wollack, E. J.   +55 more
core   +4 more sources

Structural Characterization of the Taltal Segment in Northern Chile Between 22°S and 26°S Using Local Earthquake Tomography

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 5, May 2024.
Abstract Recordings of earthquakes by a temporary deployment of 84 short period seismometers in northern Chile were used to derive regional 3D seismic velocity models for the Taltal segment. We used the Regressive ESTimator (REST) package for event detection and automatic onset estimation of P‐ and S‐wave arrival times to create an earthquake catalog ...
Sergio Leon‐Rios, Valentina Reyes‐Wagner, Daniela Calle‐Gardella, Andreas Rietbrock, Steven Roecker, Andrei Maksymowicz, Diana Comte   +6 more
wiley   +1 more source

The {\gamma} Dor stars as revealed by Kepler : A key to reveal deep-layer rotation in A and F stars [PDF]

, 2017
The {\gamma} Dor pulsating stars present high-order gravity modes, which make them important targets in the intermediate-and low-mass main-sequence region of the Hertzsprung-Russell diagram.
Antoci, V., Bedding, T. R., Murphy, S. J., Ouazzani, R. -M., Salmon, S. J. A. J.   +4 more
core   +1 more source