Results 41 to 50 of about 156,147 (279)
Advanced Engineering Materials, EarlyView.This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar +7 more
wiley +1 more source
Frontiers in Earth Science, 2023 One of the most widespread and diverse animal groups of the Cambrian Explosion is a clade of stem lineage arthropods known as Radiodonta, which lived exclusively in the early Paleozoic.
Gaëtan J.-M. Potin, Allison C. Daley
doaj +1 more source
Clustering Fossils from the Early Universe [PDF]
, 2012 Many inflationary theories introduce new scalar, vector, or tensor degrees of freedom that may then affect the generation of primordial density perturbations.
Jeong, Donghui, Kamionkowski, Marc
core +2 more sources
Fossilized bioelectric wire – the trace fossil Trichichnus [PDF]
Biogeosciences, 2014 Abstract. The trace fossil Trichichnus is proposed as an indicator of fossil bioelectric bacterial activity at the oxic–anoxic interface zone of marine sediments. This fulfils the idea that such processes, commonly found in the modern realm, should be also present in the geological past.
Kȩdzierski, M. +3 more
openaire +6 more sources
Advanced Functional Materials, EarlyView.The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal +10 more
wiley +1 more source
Saiga fossils in the Southern-Lower Volga of Astrakhan, Russia [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2014 Conservation of declining migratory species is a challenging task, as the factors that may have determined their past distribution may not determine their extant and future distribution.
Golovachev Mikhail Vladimirovich +3 more
doaj
Journal of Synchrotron Radiation, 2023 Palaeohistological analysis has numerous applications in understanding the palaeobiology of extinct dinosaurs. Recent developments of synchrotron-radiation-based X-ray micro-tomography (SXMT) have allowed the non-destructive assessment of ...
Takuya Imai +3 more
doaj +1 more source
Phylogenies Without Fossils [PDF]
Evolution, 1994 Phylogenies that are reconstructed without fossil material often contain approximate dates for lineage splitting. For example, particular nodes on molecular phylogenies may be dated by known geographic events that caused lineages to split, thereby calibrating a molecular clock that is used to date other nodes.
Paul H, Harvey, Robert M, May, Sean, Nee
openaire +2 more sources
Advanced Functional Materials, EarlyView.Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song +4 more
wiley +1 more source
How to Recognize Mosses from Extant Groups among Paleozoic and Mesozoic Fossils
DiversityThis paper describes a range of Paleozoic and Mesozoic mosses and assesses how far they can be referred to extant taxa at the family, ordinal, or class levels.
Michael S. Ignatov +3 more
doaj +1 more source