Paedomorphosis and retention of juvenile diet lead speciation in a group of Neotropical snakes (Colubroides-Philodryadini) [PDF]
Dipsadidae is one of the largest clades of extant reptiles, showing an impressive morphological and ecological diversity. Despite this fact, the developmental processes behind its diversity are still largely unknown.
Mariana Chuliver, Agustín Scanferla
doaj +2 more sources
A new Cretaceous thyreophoran from Patagonia supports a South American lineage of armoured dinosaurs [PDF]
The early evolution of thyreophoran dinosaurs is thought to have occurred primarily in northern continents since most evidence comes from the Lower and Middle Jurassic of Europe and North America.
Facundo J. Riguetti +2 more
doaj +2 more sources
3D Printing High-Consistency Enzymatic Nanocellulose Obtained from a Soda-Ethanol-O2 Pine Sawdust Pulp [PDF]
Soda-ethanol pulps, prepared from a forestry residue pine sawdust, were treated according to high-consistency enzymatic fibrillation technology to manufacture nanocellulose.
Heli Kangas +8 more
doaj +2 more sources
Effect of Ethyl Acetate on the Defatting of Leaves in the Extraction of Stevia rebaudiana Bertoni [PDF]
Research background. The process for producing purified steviol glycosides from Stevia rebaudiana leaves (stevia) generally involves pretreatments, extraction, purification and crystallization.
Liliana Celaya, Nicolás Kolb Koslobsky
doaj +2 more sources
Fabrication of TiO2 Crystalline Coatings by Combining Ti-6Al-4V Anodic Oxidation and Heat Treatments [PDF]
The bio- and hemocompatibility of titanium alloys are due to the formation of a TiO2 layer. This natural oxide may have fissures which are detrimental to its properties. Anodic oxidation is used to obtain thicker films. By means of this technique, at low
María Laura Vera +3 more
doaj +2 more sources
Biocomposites of Bio-Polyethylene Reinforced with a Hydrothermal-Alkaline Sugarcane Bagasse Pulp and Coupled with a Bio-Based Compatibilizer [PDF]
Bio-polyethylene (BioPE, derived from sugarcane), sugarcane bagasse pulp, and two compatibilizers (fossil and bio-based), were used to manufacture biocomposite filaments for 3D printing.
Nanci Vanesa Ehman +6 more
doaj +2 more sources
Novel type of egg-clustering in threadsnakes (Serpentes: Leptotyphlopidae) [PDF]
Snakes lay their eggs in clutches of different size, which are usually attached to each other forming a cluster. Egg-clustering is a widespread phenomenon across alethinophidian snakes, mostly recorded in Pythonoidea and caenophidian clades.
Mariana Chuliver, Agustín Scanferla
doaj +3 more sources
EL ÁREA DE PALEONTOLOGÍA DE LA FUNDACIÓN AZARA
El Área de Paleontología de la Fundación Azara funciona en la Universidad Maimónides. En 17 años se ha afianzado con solidez en las publicaciones, los encuentros de colegas y en los medios.
Sebastián Apesteguía +2 more
doaj +1 more source
Bioconversion of Wood Waste to Bio-ethylene: A Review
Bio-based ethylene produced by bioethanol dehydration is an environmentally friendly substitute for oil-based ethylene. It is a low-pollution raw material that can be used to produce high-value bio-based materials.
Carolina Mónica Mendieta +5 more
doaj +1 more source
Dos sitios de altura en la Sierra del Cajón. El estado actual de las investigaciones en la localidad arqueológica de pichanal, provincia de Catamarca [PDF]
En este trabajo presentamos dos sitios arqueológicos situados al interior de la Sierra del Cajón en la provincia de Catamarca, y ocupados en el Periodo Tardío (ca. 1000-1430).
Violeta Cantarelli +2 more
doaj +1 more source

