Results 71 to 80 of about 1,853 (301)

El Dorado Gold Placer Mines

open access: yes, 1938
EL DORADO GOLD PLACER MINES Finn District. Powell County. Minerals Yearbook 1938. Pages 355. Operated the dragline plant at the Fontana placer from May 1 to October 31, 1937.
WPA
core  

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

Characteristics of native gold at Kosumnerskoe placer gold deposit (the Nether-Polar Urals)

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2018
The paper presents the results of a study of heavy mineral concentrates of Kosumnerskoe gold deposit as well as the native gold from them. This gold deposit includes two gravel deposits.
M. A. Boguslavskiy, S. O. Khudyakov
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran   +6 more
wiley   +1 more source

Terrigenous Tertiary Gold Bearing Strata: World Distribution, Economic Significancy and Modern Placer Formation Capacity

open access: yesRussian Journal of Earth Sciences
The article is dedicated to estimation of tertiary terrigenous strata role in world gold mining. Localization peculiarities of tertiary gold deposits and their placers were examined.
Vladimirceva Ol'ga   +3 more
doaj   +1 more source

El Dorado Gold Placer Mining Company

open access: yes, 1934
EL DORADO GOLD PLACER MINING CO. Finn District. Powell County. Minerals Yearbook 1934. Sta. App. Page 404. Placer output (299.20 ounces of gold and 37 ounces of silver) came chiefly from their property, the Fontana.https://digitalcommons.mtech.edu ...
WPA
core  

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

open access: yesAdvanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Economic Evaluation of Placer Gold Along River Indus From Ghazi to Kund, Khyber Pakhtunkhwa, Pakistan: Implications for Commercial Scale Pilot Plant

open access: yesInternational Journal of Economic and Environment Geology, 2019
A detailed study was conducted on Indus river in order to evaluate the economic potential. Samples were collected for geochemical studies from both stream sediments (SS) and heavy mineral concentrates (HMC) along Indus river from Ghazi, Hund, Beka ...
Liaqat Ali, Sajjad Ahmad, Seema Anjum Khattak, Naveed Anjum, Muhammad Waseem, Asghar Ali
doaj  

Second annual conference on Alaskan placer mining, focus on gold

open access: yes, 1980
Published by the Mineral Industry Research Laboratory, School of Mineral Industry, University of Alaska, Fairbanks. Funds for publication of this symposium volume were provided by the Carl G.
Finch, Louella, Campbell, B.W.
core  

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

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