Results 111 to 120 of about 509,485 (382)

3.46 Ga Apex chert 'microfossils' reinterpreted as mineral artefacts produced during phyllosilicate exfoliation [PDF]

open access: yes, 2016
We acknowledge the facilities, scientific and technical assistance of the Australian Microscopy & Microanalysis Research Facility at: Centre for Microscopy Characterisation and Analysis, The University of Western Australia; Electron Microscopy Unit, The ...
Brasier, Alexander   +4 more
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Phylogenetic Analysis of Araucariaceae: Integrating Molecules, Morphology, and Fossils

open access: yesINTERNATIONAL JOURNAL PLANT SCIENCES, 2013
Premise of research. Phylogenetic relationships of Araucariaceae (Coniferophyta, Araucariales) are revised on the basis of the first combined data matrix for the family. Methodology.
I. Escapa, S. Catalano
semanticscholar   +1 more source

Highly Selective Toward HER or CO2RR by Regulating Cu Single and Dual Atoms on g‐C3N4

open access: yesAdvanced Functional Materials, EarlyView.
This systematic study provides insights into the design of electrocatalysts for hydrogen evolution reaction (HER) and carbon dioxide reduction (CO2RR). It serves as a useful guide for tuning catalyst architecture toward efficient multifunctional performance by varying synthetic parameters, demonstrating the impact of copper (Cu) species ranging from ...
Wan‐Ting Chen   +9 more
wiley   +1 more source

Trace fossils of microbial colonization on Mars: Criteria for search and for sample return [PDF]

open access: yes
The recent discovery of microbial trace-fossil formation in the frigid Ross Desert of Antarctica suggests that early primitive life on Mars may have left behind similar signatures. These trace fossils are apparent as chemical or physical changes in rock (
Friedmann, E. I.
core   +1 more source

Aspects of the taphonomy of the Cambrian Explosion in North Greenland [PDF]

open access: yes, 2017
This thesis describes and elucidates the taphonomic pathways responsible for the exceptional preservation of some of the most common elements of the Sirius Passet Lagerstätte (early Cambrian), North Greenland.
STRANG, KATIE,MARGARET
core  

Multiple global radiations in tadpole shrimps challenge the concept of ‘living fossils’

open access: yesPeerJ, 2013
‘Living fossils’, a phrase first coined by Darwin, are defined as species with limited recent diversification and high morphological stasis over long periods of evolutionary time.
T. Mathers   +4 more
semanticscholar   +1 more source

Bipolar Hydrogen Production by Hybrid Water Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
This review focuses on the recent advances in uniqueness bipolar H2 production from the oxidation of representative small molecules, including 5‐hydroxymethylfurfural, formaldehyde, alcohols, and N‐heterocycle amides. The target electrocatalysts and the underlying mechanisms are discussed in respect to specific substrate oxidation.
Jiachen Li   +5 more
wiley   +1 more source

Saiga fossils in the Southern-Lower Volga of Astrakhan, Russia [PDF]

open access: yesSongklanakarin 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  

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