Results 81 to 90 of about 26,826 (296)

Facies and sequence stratigraphic implications of the Statfjord formation (upper triassic-lower Jurassic), northern north sea, UK [PDF]

open access: yes, 1996
Detailed sedimentological logging of core, and interpretation of wireline logs from the Brent Oil Field, northern North Sea, have allowed for the identification of sedimentary facies and environments of the Upper Triassic-Lower Jurassic Statfjord ...
Tawengi, Khaeri Segayer
core  

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Low temperature sequestration of photosynthetic pigments: Model studies and natural aquatic environments [PDF]

open access: yes, 2009
A series of synthetic C-3^1 alkylthioether chlorophyll derivatives, analogous to those found to occur naturally in sediment from Pup Lagoon, Antarctica, have been formed in laboratory reactions that simulate conditions that occur in many natural anoxic ...
Pickering, Matthew D   +1 more
core  

Distinguishing depositional environments in shallow-water mixed, bio-siliciclastic deposits on the basis of the degree of heterolithic segregation (Gelasian, southern Italy)

open access: yes, 2012
A new sedimentological technique has been tested in Gelasian cross-stratified, bio-siliciclastic deposits cropping out in southern Italy (Lucanian Apennine) to disentangle paleoenvironmental and model reconstructions for shallow-water mixed sediments ...
Chiarella D.   +3 more
core   +1 more source

Stretching the Printability Metric in Direct‐Ink Writing with Highly Extensible Yield‐Stress Fluids

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces “drawability” as a new metric for assessing printability in direct‐ink writing, focusing on gap‐spanning performance and speed robustness. By designing yield‐stress fluids with high extensibility, we demonstrate that extensional strain‐to‐break significantly enhances printability.
Chaimongkol Saengow   +9 more
wiley   +1 more source

Potentials and Limitations of Fluviomarine Pollen Records to Reconstruct Spatiotemporal Changes in Coastal Ecosystems During the Holocene: A Case of Study from Ría de Vigo (NW Iberia)

open access: yesLand
The study of marine and terrestrial palynomorphs in fluviomarine environments has been successfully used in combination with different geophysical approaches to understand high-resolution relative sea-level oscillations and to reconstruct the ...
Alberto Castro-Parada   +6 more
doaj   +1 more source

Sistema deposicional e petrografia dos conglomerados e arenitos da borda sul da Bacia do Itajaí, localidade de Gaspar, Santa Catarina [PDF]

open access: yes, 2014
TCC(graduação) - Universidade Federal de Santa Catarina. Centro de Filosofia e Ciências Humanas. Geologia.O preenchimento sedimentar em bacias de foreland é controlado principalmente por fatores tectônicos, que governam o aporte sedimentar e o espaço de ...
Lopes, Juliana Aparecida Gonçalves
core  

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

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