Results 61 to 70 of about 144,405 (308)

Eggshell pigment composition covaries with phylogeny but not with life history or with nesting ecology traits of British passerines [PDF]

, 2015
No single hypothesis is likely to explain the diversity in eggshell coloration and patterning across birds, suggesting that eggshell appearance is most likely to have evolved to fulfill many nonexclusive functions.
Brulez, Kaat, Cassey, Phillip, Cooney, Christopher R., Hauber, Mark E., Lovell, P. George, Maurer, Golo, Mikšík, Ivan, Portugal, Steven J., Reynolds, Silas J., Russell, Douglas   +9 more
core   +7 more sources

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

The Potential Use of Oyster Shell Waste in New Value-Added By-Product

Resources, 2019
Calcium carbonate is one of the most used raw materials in various industries, such as construction materials, food supplement, pharmaceutics, animal feed, plastic production, and others.
Thamyres H. Silva, Joana Mesquita-Guimarães, Bruno Henriques, Filipe S. Silva, Márcio C. Fredel   +4 more
doaj   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

China's Legal Response to Trafficking in Wild Animals: The Relationship between International Treaties and Chinese Law

AJIL Unbound, 2017
In China, the wild animals and animal products that are sold through illegal trafficking are mainly those that can be made into medicines; are raw materials in the form of ivory, rhinoceros horns, and turtle shells; and are edible or have ornamental ...
Jiwen Chang
doaj   +1 more source

Improving the 14c dating of marine shells from the Canary Islands for constructing more reliable and accurate chronologies [PDF]

, 2012
Radiocarbon dating of closely associated marine mollusk shells and terrestrial material (charred wood or bone) collected from archaeological contexts on Tenerife and Fuerteventura islands allowed us to quantify the marine C-14 reservoir effect (Delta R ...
Acosta, Arco Aguilar, Arco Aguilar, Arco Aguilar, Jiménez Sánchez, Longin, Machado Yanes, Martín Rodriguez, Martín Socas, Martín Socas, Reimer, Soares, Soares, Wooster, Álvarez Delgado   +14 more
core   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

Advanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan, Jack Keddie, Byoungyoul Park, Hyun‐Joong Chung   +3 more
wiley   +1 more source

Dawn of diverse shelled and carbonaceous animal microfossils at ~ 571 Ma

Scientific Reports
AbstractThe Ediacaran-Cambrian transition documents a critical stage in the diversification of animals. The global fossil record documents the appearance of cloudinomorphs and other shelled tubular organisms followed by non-biomineralized small carbonaceous fossils and by the highly diversified small shelly fossils between ~ 550 and 530 Ma.
Luana Morais, Bernardo T. Freitas, Thomas Rich Fairchild, Rolando Esteban Clavijo Arcos, Marcel Guillong, Derek Vance, Marcelo Da Roz de Campos, Marly Babinski, Luiz Gustavo Pereira, Juliana M. Leme, Paulo C. Boggiani, Gabriel L. Osés, Isaac D. Rudnitzki, Douglas Galante, Fabio Rodrigues, Ricardo I. F. Trindade   +15 more
openaire   +5 more sources

Bio‐derived nanomaterials for energy storage and conversion

Nano Select, 2021
This review covers recent progress and advancements in bio‐templating nanomaterials for use in energy applications. Viruses, bacteria, and fungus, as well as plant and animal biomasses such as woods, coffee grounds, and crab shells, can be used as the ...
Matthew Dalton Powell, Jed Donavan LaCoste, Christopher James Fetrow, Ling Fei, Shuya Wei   +4 more
doaj   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source