Results 91 to 100 of about 407,317 (358)

Metals in surface sediments of large shallow eutrophic lake chaohu, china [PDF]

open access: yes, 2007
Metal contents of surface sediments were analyzed temporally and spatially in Lake Chaohu, China. No obvious temporal variations were observed, which probably due to physio- and bio- mixing, e.g. wind and microbes, in this lake. Enrichment factor of some
Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China   +3 more
core   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff   +9 more
wiley   +1 more source

Movement of Trace Elements During Residence in the Antarctic Ice: a Laboratory Simulation [PDF]

open access: yes, 1991
Recent work has determined that differences in the trace element distribution between Antarctic eucrites and non-Antarctic eucrites may be due to weathering during residence in the ice, and samples that demonstrate trace element disturbances do not ...
Strait, Melissa M.
core   +1 more source

Soluble trace metals in aerosols over the tropical south-east Pacific offshore of Peru [PDF]

open access: yes, 2015
Bulk aerosol samples collected during cruise M91 of FS Meteor off the coast of Peru in December 2012 were analysed for their soluble trace metal (Fe, Al, Mn, Ti, Zn, V, Ni, Cu, Co, Cd, Pb, Th) and major ion (including NO3- and NH4+) content.
Baker, Alexander   +3 more
core   +3 more sources

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin   +5 more
wiley   +1 more source

Metals at the surface of last scatter [PDF]

open access: yes, 2011
Standard big-bang nucleosynthesis (BBN) predicts only a trace abundance of lithium and no heavier elements, but some alternatives predict a nonzero primordial metallicity.
Ali-Haïmoud, Yacine   +2 more
core  

Bioavailable Trace Metals in Neurological Diseases [PDF]

open access: yes, 2016
Medical treatment in Wilson’s disease includes chelators (d-penicillamine and trientine) or zinc salts that have to be maintain all the lifelong. This pharmacological treatment is categorised into two phases; the first being a de-coppering phase and the ...
A Ahuja   +101 more
core   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

open access: yesAdvanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk   +7 more
wiley   +1 more source

Temperature affects the sorption of trace metals by macro- and microplastics within marine intertidal sediments: insights from a long-term laboratory-based study

open access: yesFrontiers in Marine Science
Macro- and microplastics and trace metals are significant pollutants in the marine environment and have been reported in all ecosystems around the world.
Tamara N. Kazmiruk   +4 more
doaj   +1 more source

Bioaccumulation of Trace Metals in Tissues of Rohu Fish for Environmental Risk Assessment [PDF]

open access: yes, 2016
In the present study, the two lakes, Vengaiahlake (Lake A-Sewage polluted receiving discharge from storm water drain) and YellamallappaChetty lake (Lake B-Industrially polluted) situated near Krishnarajpuram-Hoskotetaluk, Bangalore, Karnataka were ...
Bela Zutshi, ., Nazima Noor, .
core   +1 more source

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