Results 61 to 70 of about 227,164 (251)

Morphology and anatomy of the rhizome and frond in the African species of Polystichum (Pteropsida: Dryopteridaceae)

open access: yesBothalia: African Biodiversity & Conservation, 2000
The generic circumscription of the polystichoid ferns within the Dryopteridaceae and their relationships has been and still is much debated. Although floristic accounts for Polystichum are available for many parts of the world, its morphology and ...
J. P. Roux, A. E. van Wyk
doaj   +1 more source

LaMina dataset

open access: yes, 2017
LaMina ...
Bartelheimer, Maik   +9 more
core   +1 more source

Enhancement of the Through‐Thickness Electrical Conductivity of Carbon‐Fiber‐Reinforced Plastics Using Large Graphite Particles

open access: yesAdvanced Engineering Materials, EarlyView.
To enhance through‐thickness conductivity without sacrificing impregnation, large spherical graphite particles are intentionally employed in a low‐viscosity resin. Unlike finer conductive fillers, these particles remain outside the fiber bundles and accumulate in resin‐rich interlaminar regions during molding.
Keito Hosoe   +6 more
wiley   +1 more source

Khat (Catha edulis): The herb with officio-legal, socio-cultural and economic uncertainty

open access: yesSouth African Journal of Science, 2010
Khat (Catha edulis) is a plant of uncertain and highly controversial status grown in the countries around the Red Sea and on the eastern coast of Africa. The chewing of khat leaves has a deep-rooted religious and socio-cultural tradition.
Sikiru Lamina
doaj  

Elastic–Plastic Modeling and Experimental Characterization of Granular Jamming Actuators

open access: yesAdvanced Engineering Materials, EarlyView.
Granular jamming enables rapid switching between soft and rigid mechanical states. Here, a reduced‐order elastic‐perfectly‐plastic beam framework captures pressure‐dependent loading, unloading, residual deformation, and hysteresis in jammed beams, while matching three‐point bending experiments across materials and geometries. The framework links design
Saheli Patel   +2 more
wiley   +1 more source

Probable Measure Estimating Tool Employed by the Aeneolithic Potters

open access: yesEXARC Journal, 2012
The article proposes that an item, ornamented with a geometric pattern with inscribed diagonal cross and attributed to the Afanasievo culture (Aeneolithic, South Siberia), represents a primitive tool reflecting practical knowledge of basic geometry by ...
Eva Lamina
doaj  

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein   +4 more
wiley   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti   +16 more
wiley   +1 more source

Three-fracture coupling fracturing technology for ultradeep shale gas in Qiongzhusi Formation, Ziyang

open access: yesYouqi dizhi yu caishoulu
The Cambrian Qiongzhusi Formation, with its abundant shale gas resources and promising development prospects, is an important successor to the Silurian Longmaxi Formation. The Qiongzhusi Formation in Ziyang is characterized by great burial depth, high in-
ZHOU Xingfu
doaj   +1 more source

Morphometric Analysis of Dry Typical Thoracic Vertebrae: A Cross sectional Study from Telangana, India [PDF]

open access: yesJournal of Clinical and Diagnostic Research
Introduction: Morphometric measurements of dry typical thoracic vertebrae play an important role clinically in managing scoliosis, performing laminectomies, guiding pedicle screw fixation, and in designing spinal implants or prostheses for ...
BH Shiny Vinila   +3 more
doaj   +1 more source

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