Results 81 to 90 of about 30,108 (299)

Not invasive analyses on a tin-bronze dagger from Jericho. A case study [PDF]

open access: yes, 2018
Tin-bronze makes its appearance in Southern Levant during the Early Bronze IV, the post-urban phase of the last centuries of the 3rdmillennium BC, when arsenical copper was still the most widespread copper alloy. Only from the following Middle Bronze Age
Caminiti, Ruggero   +3 more
core   +1 more source

The Effect of Demineralization on Coal Functional Group Pyrolysis: Rank‐Dependent Dual Mechanisms of Structural Reorganization and Mineral Catalysis

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Coal pyrolysis, as a key thermochemical conversion process, is significantly influenced by inherent minerals, yet their role across different coal ranks remains inadequately understood. This study investigates the effect of acid‐washing (demineralization) on the thermal decomposition of six functional groups (aliphatic C–H, aromatic C–H/C=C, C=
Zhiyuan Niu   +4 more
wiley   +1 more source

Nanoindentation study of short-range ordering

open access: yesMaterials Research Express, 2019
Thermal ageing of nickel-base alloys can lead to the formation of brittle ordered phases, but the direct study of these phases is challenging. Nanoindentation is used in this study as an alternative technique to determine the extent of short-range ...
Roman Mouginot   +3 more
doaj   +1 more source

Crevice Corrosion Behavior of Alloy 690 in High-Temperature Aerated Chloride Solution. [PDF]

open access: yesMaterials (Basel), 2022
Ning F   +6 more
europepmc   +1 more source

ERDA-NASA advanced thermionic technology program [PDF]

open access: yes
Research is summarized on surface studies (work functions of different LaB6 surfaces), plasma studies, converter development (tungsten emitter, nickel collector and tungsten emitter La B6 collector), and hot shell development for using thermionic ...

core   +1 more source

Combined Gravimetric, Electrochemical, and Computational Research on Benzothiophene Derivatives as Effective Corrosion Inhibitors for Mild Steel

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Four benzothiophenes, thianaphthene (BT‐1), 3‐bromothianaphthene (BT‐2), benzo[b]thiophene‐2‐carboxaldehyde (BT‐3), and benzo[b]thiophene‐2‐carbonitrile (BT‐4), were tested as mild steel corrosion inhibitors in 1‐M HCl. The compounds have the similar benzothiophene core but differ in the substituents bound to the ring.
Nhlanhla G. Chirwa   +3 more
wiley   +1 more source

N‐heterocyclic carbene‐based tetradentate Pt(II) phosphors for blue organic light‐emitting diodes: Molecular design, photophysics, and device performance

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Structure‐oriented design of NHC‐based tetradentate Pt(II) complexes offers narrowband deep‐blue emission for OLEDs. This review highlights how steric shielding and electronic modulation regulate intermolecular interactions, excited‐state dynamics, and device performance, outlining design principles and outlines toward efficient and durable blue ...
Mingi Kim, Chan Hee Ryu, Kang Mun Lee
wiley   +1 more source

Recent research progress in stress corrosion crack initiation of Alloy 690 in pressurized water reactor primary water

open access: yesReview of Materials Research
Alloy 690 exhibits much higher resistance to stress corrosion cracking (SCC) in pressurized water reactor (PWR) primary water than other engineering austenitic alloys as it is highly resistant to penetrative intergranular oxidation.
Wenjun Kuang   +3 more
doaj   +1 more source

Research program to develop a technology improvement program for closed die forging Final report [PDF]

open access: yes
Upset forging tests on aluminum and titanium alloys and maraging steel using high temperature ...
Anderson, P. E.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy