Results 101 to 110 of about 118,063 (307)

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

INITIAL STAGES OF CARBON GENESIS IN THE UNIVERSE

open access: yesUniversitas Scientiarum, 2004
The formation possibility of the most widespread carbon compounds had been showed on the base of detonation nanodiamonds thermodynamic data. These reactions may play a key role in the life origin and in the atmosphere formation of the Solar system giant ...
A.L. Vereshchagin
doaj  

GLOBAL TRENDS OF ALTERNATIVE INVESTMENTS [PDF]

open access: yesEconomy and Sociology, 2016
An alternative investment is an investment product other than the traditional investments of stocks, bonds, cash, or property. The term is a relatively loose one and includes tangible assets such as art, wine, antiques, coins, or stamps and some ...
Ivan LUCHIAN, Alexandra TVIRCUN
doaj  

Archaean and Proterozoic diamond growth from contrasting styles of large-scale magmatism

open access: yesNature Communications, 2017
Dating of inclusions within diamonds is used to reconstruct Earth’s geodynamic history. Here, the authors report isotope data on individual garnet inclusions within diamonds from Venetia, South Africa, showing that two suites of diamonds define two ...
Janne M. Koornneef   +5 more
doaj   +1 more source

Recycling Subducted Organic Carbon as Diamonds: An Example From the New Caledonia Forearc Ophiolite

open access: yes
International audienceMicro‐diamonds and moissanite (SiC) have been identified in ophiolitic mantle harzburgites and chromitites of the New Caledonian Peridotite Nappe.
Lian, Dongyang   +7 more
core   +1 more source

Gallium Microalloying in Bi–Sn Solders: Interfacial Phase Formation, Wettability, and Long‐Term Shear Reliability Under Isothermal Aging

open access: yesAdvanced Engineering Materials, EarlyView.
Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová   +6 more
wiley   +1 more source

Diamonds, Conflicts and Governance [PDF]

open access: yes, 2008
The focus of the project is on conflict diamonds. This contains a description of the basis of the Kimberley Process Certification Scheme, which is a scheme that has the aim of limiting the significance of conflict diamonds.
Bertule, Maija   +4 more
core  

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

open access: yesAdvanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler   +4 more
wiley   +1 more source

MORPHOLOGY OF DIAMONDS DISSOLVED IN THE Fe-S MELT AT DIFFERENT SULFUR CONTENTS

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
An experimental study of the process of the dissolution of diamonds in a sulfur-containing iron melt with different contents of sulfur (10,  15, 20, 25, 30 wt. %) at 3,5 GPa and 1400°C has been carried out.
V. M. SONIN   +3 more
doaj   +1 more source

Preparation of “natural” diamonds by HPHT annealing of synthetic diamonds

open access: yes, 2018
In this paper, IIa, Ib, N-doped and N–H co-doped diamonds were studied, and the interaction mechanisms between hydrogen and nitrogen in the diamonds were investigated in detail.
Yuewen Zhang   +5 more
core   +1 more source

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