Results 91 to 100 of about 1,442,809 (311)

L'armement charbonnier Marcesche (1898-1939) [PDF]

open access: yesCodrul Cosminului, 2012
In France, Lorient, city located in Brittany, is representative of the medium-sized ports. But how to explain the creation of an industrial and coal shipyard group in the last years of the 19th century in the port of Lorient?
Pascal Boisson
doaj  

Nickel Nanoparticles Infused Iron Tungstate Nanocomposite for Clean Energy Carrier Hydrogen Generation via Water Splitting

open access: yesAdvanced Materials Interfaces, EarlyView.
The study advances the understanding of Ni‐iron tungstate interactions and showcases the potential of strategic design in tailoring electrocatalytic materials for clean energy and hydrogen production. A newly developed Ni‐NPs@FeWO4 nanocomposite electrocatalyst exhibits significant potential for both hydrogen evolution reactions (HER) and oxygen ...
Dasu Ram Paudel   +4 more
wiley   +1 more source

Study on capillary water absorption properties of polypropylene fibre coal gangue ceramsite concrete under freeze-thaw damage

open access: yesThe Journal of Engineering, 2019
In order to probe the effects of freeze-thaw damage and polypropylene (PP) fibres on the capillary water absorption of coal gangue ceramsite concrete (CGCC), the freeze-thaw cycle test and capillary water absorption test were carried out to study the ...
Jisheng Qiu   +4 more
doaj   +1 more source

Chemical Vapor Deposition of High‐Quality Graphene Using Carboxylated Polycyclic Aromatic Hydrocarbons as Solid Carbon Sources

open access: yesAdvanced Materials Technologies, EarlyView.
Graphene is grown from pyrene and its carboxylated derivative, 1‐pyrenecarboxylic acid (1‐PCA). The carboxylic acid group of 1‐PCA underwent decarboxylation to produce pyrene and CO2, thereby triggering the Boudouard reaction. This reaction results in graphene with high charge‐carrier mobility by decreasing vacancy‐type defects and oxygen groups in the
Jeong In Ryu   +5 more
wiley   +1 more source

Investigation and Measurement of Ash Content of Coal in Zirab Coal Mine-Iran Using Dual Energy -Ray and X-Ray Fluorescence Methods [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2000
Coal with low ash content has an important role in the coal and steel industry. There are different methods to measure the ash content. The conventional method which is used in most coal mines of Iran, is to burn the coal and measure the remaining ash. A
Abbas Esmaeilnia Shirvani   +1 more
doaj  

RECLAMATION POTENTIAL OF ROBINIA PSEUDOACACIA L. ON MINING ROCK WITHIN STEPPE ZONE OF UKRAINE [PDF]

open access: yes, 2018
Western Donbass is a powerful coal-mining region in the Steppe zone of Ukraine. In this region, large areas are damaged by coal mining. The mine rocks spread all over the coal district of Dnipropetrovsk region often contain toxic inorganic ...
Sytnyk, Svitlana
core  

Nature‐Inspired Functional Aerogel Fibers with Engineerable Core–Shell Morphology

open access: yesAdvanced Materials Technologies, EarlyView.
Nature‐inspired core–shell aerogel fibers are fabricated through coaxial wet‐spinning, which combines a polyimide shell with MXene core. The fibers exhibited absorption‐dominant EMI shielding, low thermal conductivity, and mechanical robustness, demonstrating multifunctional potential for wearable electronics and advanced smart textiles.
Ali Akbar Isari   +6 more
wiley   +1 more source

Replenishing Humic Acids in Agricultural Soils

open access: yesAgronomy, 2016
For many decades, it was commonly believed that humic acids were formed in soils by the microbial conversion of plant lignins. However, an experiment to test whether these humic acids were formed prior to plant matter reaching the soil was never reported
Michael Susic
doaj   +1 more source

Distribution of certain minor elements in Alaskan coals [PDF]

open access: yes, 1968
Seventy-five samples of coal from Northern Alaska, Jarvis Creek, Nenana, Matanuska, Kenai and Bering River Coal Fields were analyzed by quantitative spectrochemical procedures f o r lead, gallium, copper, barium, beryllium, nickel, titanium, vanadium ...
Rao, P.D.
core  

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