Results 31 to 40 of about 1,739,905 (146)

Novelties in Dimerostemma (Asteraceae, Heliantheae) from Rio Grande do Sul, Brazil

Nordic Journal of Botany, EarlyView.
Revisiting the Dimerostemma collection in Rio Grande do Sul, the southernmost state of Brazil, one new species of Dimerostemma is described and another is resurrected. Although previously synonymized under Dimerostemma arnottii, Dimerostemma oppositifolium is here resurrected based on its distinct opposite leaves, linear to lanceolate leaf limbs, and ...
Vinicius Resende Bueno, Mateus Henrique Schenkel, Lua Dallagnol Cezimbra, Cláudio Augusto Mondin, Bruno de Souza   +4 more
wiley   +1 more source

Cassini detection of Enceladus' cold water-group plume ionosphere [PDF]

, 2009
This study reports direct detection by the Cassini plasma spectrometer of freshly-produced water-group ions (O+, OH+, H2O+, H3O+) and heavier water dimer ions (HxO(2))(+) very close to Enceladus where the plasma begins to emerge from the plume.
Crary, FJ, Paty, CS, Thomsen, MF, Johnson, RE, Coates, AJ, Jones, GH, Young, DT, Wilson, RJ, Tokar, RL   +8 more
core  

Theories, Models, and Scientific Representations

, 2021
Alejandro Cassini and Juan Redmond offer an elementary but fairly complete and extensive introduction to the present state of the philosophy of scientific models.
Cassini, Alejandro Pablo F., Redmond, Juan José   +1 more
core   +1 more source

Where were all the trees? Computer vision meets landscape history to unlock the potential of historical Ordnance Survey maps

People and Nature, EarlyView.
Abstract The first edition of the Ordnance Survey's 1:2500 County Series is marked with treed areas, such as woodlands and orchards, and, remarkably, freestanding trees. Consequently, it is an unparalleled source of information on the distribution of trees across Britain in the mid‐late nineteenth century, when the maps were first surveyed. In order to
Toby Pillatt, William A. P. Smith
wiley   +1 more source

The Long Trajectory of Rubber Physics: 3500+ Years and Counting

Journal of Polymer Science, EarlyView.
Natural rubber's trajectory is traced from Mesoamerican use of Castilla elastica through vulcanization and the pneumatic tire to macromolecular physics and modern solid‐state refrigeration. Illustrations of C. elastica and an H. brasiliensis plantation frame the historical progression from indigenous material, then industrial crop and on to advanced ...
Gregory B. McKenna
wiley   +1 more source

A Grammatical Interpretation of Horadam Sequences

Axioms
The Horadam sequence {Hn(a,b;p,q)}n⩾0 has been widely studied in combinatorics and number theory. In this paper, we find that the context-free grammar G={x→px+y,y→qx} can be used to generate Horadam sequences.
Jun-Ying Liu, Hai-Ling Li, Zhi-Hong Zhang   +2 more
doaj   +1 more source

Correlative X‐ray imaging and fluorescence microscopy in hydrated environments

Journal of Synchrotron Radiation, EarlyView.
We present a combined imaging platform that integrates beamline‐compatible fluorescence microscopy with scanning small‐angle X‐ray scattering to enable sequential multimodal investigations of hydrated cells under near‐native conditions. We apply our method to ordered cytoskeletal structures in different cell types and demonstrate the direct correlation
Mangalika Sinha, Boram Yu, Rita Mendes Da Silva, Ulrike Rölleke, Peter Luley, Malte Tiburcy, Wolfram-Hubertus Zimmermann, Manfred Burghammer, Sarah Köster   +8 more
wiley   +1 more source

Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates

Integrative Zoology, EarlyView.
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez, Santiago Hernández Del Pino, Esperanza Cerdeño, Manuel Hernández Fernández, Laura Domingo   +4 more
wiley   +1 more source

Female‐Biased Sexual Size Dimorphism and Its Potential Causes in Hairy‐Winged Bats

Integrative Zoology, EarlyView.
Based on the integration of molecular genetics, traditional and geometric morphology, and acoustic characteristics of hairy‐winged bats (a species that was historically misclassified into two species due to extreme craniodental divergence between the sexes) in multiple regions of China, we quantified the sexual size dimorphism (SSD) between males and ...
Yang Yue, Zefeng Huang, Yang Guo, Yi Wu, Yaqing Liao, Yibo Hu, Xiaoyun Wang, Wenhua Yu   +7 more
wiley   +1 more source

Preliminary interpretation of Titan plasma interaction as observed by the Cassini Plasma Spectrometer: Comparisons with Voyager 1 [PDF]

, 2006
The Cassini Plasma Spectrometer (CAPS) instrument observed the plasma environment at Titan during the Cassini orbiter's TA encounter on October 26, 2004.
Crary, F, Szego, K, Bolton, S, Andre, N, McComas, DJ, Hartle, RE, Coates, AJ, Young, DT, Rymer, A, Sittler, EC, Simpson, D, Berthelier, JJ, Vilppola, J, Steinberg, JT, Johnson, RE, Reisenfeld, D, Neubauer, FM, Smith, HT   +17 more
core