Results 111 to 120 of about 486,715 (397)

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

open access: yesAdvanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing   +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

Supervariate Gel Transforms into Various Biominerals in Salt Solutions

open access: yesAdvanced Functional Materials, EarlyView.
It is revealed that common calcium‐based biominerals can form from a stable, non‐toxic ‘supervariate’ gel. This tunable gel selectively yields calcite or hydroxyapatite in carbonate/phosphate solutions, while CaCl₂ facilitates the formation of dihydrate calcium pyrophosphate, which converts to hydroxyapatite upon drying. These findings provide insights
Xinxue Tang   +12 more
wiley   +1 more source

PaleoParks - The protection and conservation of fossil sites worldwide [Paléo-Parcs - Sauvegarde et valorisation de sites fossilifères à travers le monde]

open access: yesCarnets de Géologie, 2009
• Chapter 1. PaleoParks: Our paleontological heritage protected and conserved in the field worldwide, by Jere H. Lipps, p. 1-10, 20 figs. • Chapter 2. The Triassic Guanling fossil Group - A key GeoPark from Barren Mountain, Guizhou Province, China, by ...
Lipps Jere H., Granier Bruno
doaj  

Chronospaces: An R package for the statistical exploration of divergence times promotes the assessment of methodological sensitivity

open access: yesMethods in Ecology and Evolution
Much of our understanding of the history of life hinges upon time calibration, the process of assigning absolute times to cladogenetic events. Bayesian approaches to time‐scaling phylogenetic trees have dramatically grown in complexity, and depend today ...
Nicolás Mongiardino Koch   +1 more
doaj   +1 more source

Pre-reionization Fossils, Ultra-faint Dwarfs and the Missing Galactic Satellite Problem

open access: yes, 2009
We argue that, at least a fraction of the newly discovered population of ultra-faint dwarf spheroidal galaxies in the Local Group constitute the fossil relic of a once ubiquitous population of dwarf galaxies formed before reionization with circular ...
Adelman-McCarthy   +45 more
core   +1 more source

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

An Optoelectrically Switched, Dual‐Mode Neuromorphic Sensor for Transient and Accumulative Gas Detection

open access: yesAdvanced Functional Materials, EarlyView.
A transistor‐type carbon nanotube gas sensor with dual‐mode detection capability has been proposed. By simply adjusting the gate voltage and UV illumination, this sensor enables both real‐time detection and accumulation‐based sensing of toxic gases within a single device, providing a compact and adaptable platform for environmental monitoring ...
Jaewon Shin   +7 more
wiley   +1 more source

CONCRETIONS WITH FOSSILS OF THE ULYANOVSK REGION - A NEW KIND OF JEWELRY-ORNAMENTAL RAW MATERIALS

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
Concretions with fossils of the Ulyanovsk region are a new kind of jewelry and ornamental raw materials. Concretions are located in the middle part of the section of the Hauterivian sediments, which formed by dark gray dense clays. Concretions are dense,
D. A. Petrochenkov
doaj   +1 more source

Institutions and Dissent: Historical Geology in the Early Royal Society [PDF]

open access: yes, 2014
The paper aims to ques- tion the traditional view of the early Royal Society of London, the oldest scientific institution in continuous existence.
Sacco, Francesco G.
core  

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