Results 161 to 170 of about 1,853 (301)

Risks of mining to salmonid-bearing watersheds. [PDF]

Sci Adv, 2022
Sergeant CJ, Sexton EK, Moore JW, Westwood AR, Nagorski SA, Ebersole JL, Chambers DM, O'Neal SL, Malison RL, Hauer FR, Whited DC, Weitz J, Caldwell J, Capito M, Connor M, Frissell CA, Knox G, Lowery ED, Macnair R, Marlatt V, McIntyre JK, McPhee MV, Skuce N.   +22 more
europepmc   +1 more source

Is ethical gold possible? The example from fluvial gold placer in Lepaguare mining district (Honduras, Central America)

, 2013
The mineral assemblage of the gold placer mining of Murcielago in the Lepaguare valley (Central Honduras) has been studied using electron microscopy and single-crystal X-ray diffraction techniques.In this mine an environmental sustainibile project is ...
Mattioli, M, Renzulli, A, Menichetti, M, Alunno, S, Nazzareni, S, Luca, B   +5 more
core  

Chiral Microneedle Arrays With Terahertz Chiroptical Activity With Chiral‐Plasmon‐Chiral‐Phonon Resonance

Advanced Materials, EarlyView.
ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee, Hong Ju Jung, John Kim, Bum Chul Park, Caio V. C. R. da Silva, André F. de Moura, Nicholas A. Kotov   +6 more
wiley   +1 more source

Footprints of past mining in Alaska (USA) derived from high-resolution satellite imagery. [PDF]

Sci Data
Bender A.
europepmc   +1 more source

Resume of high capacity gravity separation equipment for placer gold recovery

, 1975
Introduction -- High capacity gravity separation equipment -- Medium capacity gravity separation equipment -- Low capacity gravity separation -- References.The phenomenal and meteoric rise in gold prices in the past few years has stimulated a renewed ...
Mildren, Jim.
core  

In Vivo Monitoring of Thrombo‐Inflammatory Biomarkers via Molecularly Imprinted Polymer‐Integrated Hydrogel Microneedles

Advanced Materials, EarlyView.
A wearable electrochemical microneedle patch integrates Prussian Blue redox transduction with molecularly imprinted polymer recognition for reagent‐free sampling and detection of thrombo‐inflammatory biomarkers in dermal interstitial fluid. The platform tracks thrombin and inflammatory cytokines with sensitive in vitro, ex vivo, and in vivo performance,
Mahmoud Ayman Saleh, Peyman GhavamiNejad, Arash Khorrami Jahromi, Sanjana Srikant, Sripadh Guptha Yedire, Fatemeh Keyvani, Roozbeh Siavash Moakhar, Sajad Shiekh, Mackenzie Graham, Joe Quadrilatero, Mahla Poudineh, Sara Mahshid   +11 more
wiley   +1 more source

Continuity of eastern Beringian megafauna phylogenetic diversity following deposition of the Late Pleistocene Dawson tephra. [PDF]

Arct Antarct Alp Res
Wanket C, Cocker SL, De Sanctis B, Oliveira M, Bond J, Jensen BJL, Froese DG, Shapiro B.   +7 more
europepmc   +1 more source

Placer gold, platinum

, 1995
C R McLeod, S R Morison
openaire   +1 more source

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Distribution of ilmenite minerals in placer deposits along the middle coast of Southern Brazil using spaceborne and ground-based remote sensing. [PDF]

PLoS One
Prates Hallal G, Porcher CC, Veettil BK, de Almeida Espinoza JM, Beatriz Alves Rolim S.   +4 more
europepmc   +1 more source