Results 51 to 60 of about 729,911 (289)

The historical mines of Almadén [PDF]

, 2009
The historical mines of Almadén, which were actively functioning for over two millennia, produced a third of the world’s mercury — a total of 7,500,000 flasks (Hernández, 1995).
Kindelán Echevarria, Paz, Mazadiego Martínez, Luis Felipe, Orche García, Enrique, Puche Riart, Octavio   +3 more
core   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

Advanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner, Julian Burkhart, Kateryna Borysova, Chiara Mazzariol, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

PEDOT‐Based Eutectogel Electrode Arrays for Enhanced High‐Resolution Electrogastrography: Fabrication, Stability, and Wearable Performance

Advanced Functional Materials, EarlyView.
Here, we present a high‐density PEDOT eutectogel electrode array for enhanced body surface gastric mapping. Silver electrodes are blade‐coated onto flexible substrates, followed by electrogelation of PEDOT:PSS and the deposition of a PEDOT:LS eutectogel.
Christopher Slaughter, Luke Gatecliff, Xudong Tao, Ruben Ruiz‐Mateos Serrano, Amy T. Jin, Matias L. Picchio, Daniele Mantione, Antonio Dominguez‐Alfaro, George G. Malliaras   +8 more
wiley   +1 more source

Planning for development in a mineral-based economy [PDF]

, 1980
Draft copy of a paper presented at the 23rd Annual Meeting of the African Studies Association "Charge and Contrasts: New Directions and Traditional Ties in Africa" Philadephia, October 15-18, 1980.A deeply structured dualism typically characterizes third
Seidman, Ann
core  

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source

Guardianes del río. Reflexiones sobre lo que hacemos y aprendemos al lado del agua

Revista +E, 2017
“Guardianes del río” nace como un Proyecto de Extensión de Interés Social de la Universidad Nacional del Litoral (UNL, Santa Fe, Argentina), con el objeto de integrar a los alumnos y exalumnos de la Escuela Media O.
Patricia Mines, Ricardo Giavedoni
doaj   +1 more source

Sustainable Rehabilitation of Surface Coal Mining Areas: The Case of Greek Lignite Mines

Energies, 2020
Surface lignite mines of the Balkan Peninsula face growing pressure due to the CO2 emissions reduction initiatives, rapidly increasing renewable-power capacity, and cheap natural gas.
Francis Pavloudakis, Christos Roumpos, Evangelos Karlopoulos, Nikolaos Koukouzas   +3 more
doaj   +1 more source

Rapid Design and Manufacture of Ultralight Cellular Materials [PDF]

, 2005
This paper details the design, manufacture and testing of regular metallic lattice structures with unit cell sizes in the range 0.8mm to 5mm and truss elements of 100-500 µm in diameter [1].
Brooks, W., Cantwell, W., Mines, R., Sutcliffe, C., Todd, J.   +4 more
core   +1 more source

Copper‐Based Crystalline‐Metallic Glass Composite Thin Films: A Novel Material with Enhanced Strength and Thermally Stable Nanotwins

Advanced Functional Materials, EarlyView.
A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian, Amit Sharma, Krzysztof Wieczerzak, Alexander Groetsch, Manish Jain, Nicolò Maria della Ventura, Remo Widmer, Fedor F. Klimashin, Johann Michler, Jakob Schwiedrzik, Xavier Maeder   +10 more
wiley   +1 more source

OBJECTIVE LAWS OF ROCK PRESSURE CHANGE IN FRONT OF ADVANCING LONGWALL FACE [PDF]

, 2018
To develop a method for determining the increase in stress above advancing longwall face in conditions of Western Donbas ...
BRUI, Anna, KUCHIN, Alexandr
core