Results 71 to 80 of about 131,050 (349)

Electric Field‐Dependent Conductivity as Probe for Charge Carrier Delocalization and Morphology in Organic Semiconductors

open access: yesAdvanced Functional Materials, EarlyView.
Applying a high electric field to a doped organic semiconductor heats up the charge carrier distribution beyond the lattice temperature, enhancing conductivity. It is shown that the associated effective temperature can be used to extract the effective localization length, which is a characteristic length scale of charge transport and provides ...
Morteza Shokrani   +4 more
wiley   +1 more source

Self‐Feeding of Engineered Tissues via Controlled Glucose Release Facilitates Survival and Vascularization of Living Implants

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Engineering living matter has great clinical potential to deliver functional replacement organs. However, clinical translation remains hampered by the current inability to maintain viability of clinically relevant‐sized constructs. During the pre‐vascular phase, implants rely on nutrient diffusion for survival, which is insufficient at ...
Melvin Gurian   +5 more
wiley   +1 more source

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang   +13 more
wiley   +1 more source

Exposure to soluble platinum salts in precious metal refinery workers over a 17-year period [PDF]

open access: hybrid, 2023
Lidwien A.M. Smit   +6 more
openalex   +1 more source

The Macroeconomic Determinants of Volatility in Precious Metals Markets [PDF]

open access: yes
We investigate key macroeconomic factors that impact the price returns of precious metals markets. The markets investigated were gold, silver, platinum and palladium; whereas the macroeconomic factors accommodated business cycle, monetary environment and
Jonathan A. Batten, Cetin Ciner and Brian M. Lucey
core  

Bullion production in imperial China and its significance for sulphide ore smelting world-wide [PDF]

open access: yes, 2015
Gold and silver production was of major importance for almost all ancient societies but has been rarely studied archaeologically. Here we present a reconstruction of a previously undocumented technology used to recover gold, silver and lead at the site ...
Chen, J   +6 more
core  

Assessment of element-specific recycling efficiency in WEEE pre-processing [PDF]

open access: yes, 2017
Pre-processing is a crucial step to ensure the efficiency of subsequent processes and the quality of recyclates. The efficiency of pre-processing can be affected by high losses to undesignated output fractions.
Flamme, Sabine   +4 more
core   +1 more source

Where Most Frameworks Degrade: Flexible Bimetallic Phosphonate Crystals as pH‐Universal Supercapacitor Electrodes

open access: yesAdvanced Functional Materials, EarlyView.
Plastically flexible single crystals of the bimetallic phosphonate framework [Cu(2,2′‐bpy)VO(O3PC6H5)2] combine mechanical adaptability with robust pseudocapacitive charge storage. The material delivers about 140 Fg−1 at pH 4 and pH 10 and remains stable across pH 2‐12, enabling energy storage under comparatively mild electrolyte conditions.
Tim Müller   +11 more
wiley   +1 more source

Impact-generated hydrothermal circulation and metasomatism of the rochechouart astrobleme: mineralogy and major and trace element distribution [PDF]

open access: yes, 2014
The energy released during a hypervelocity impact on Earth can generate high temperatures in the target rock. There are currently 170 known impact structures worldwide, of which over one-third contain fossil hydrothermal systems [1].
Lee, M.R., Lindgren, P., Simpson, S.S.L.
core  

Особливості правового регулювання ліцензування господарської діяльності у сфері обігу дорогоцінного каміння [PDF]

open access: yes, 2010
Здійснення господарської діяльності, на сьогодні, в нашій державі постійно трансформуються залежно від встановлених і закріплених в нормативно правових актах визначених і регульованих державою процедур, зокрема, шляхом ліцензування господарської ...
Berentzen, N.E.   +6 more
core   +3 more sources

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