Results 131 to 140 of about 407,317 (358)

Do aphids biomagnify Cd and Zn as a defence against predation? [PDF]

The results of a study on sewage sludge application to agricultural soil have led us to propose that recycling sewage sludge can affect the biological control of grain aphids.
Diaz, Anita, Green, Iain D., Tibbett, Mark   +2 more
core  

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Geochemical Speciation and Risk Assessment of Trace Metals in Sediments from Coastal Ecosystems off Equatorial Atlantic Ocean [PDF]

, 2016
The concentrations of Cd, Cr, Cu, Ni and Pb in estuarine benthic sediments were determined through multistep speciation scheme to evaluate their spatio-temporal distributions, selective fraction magnitude, degree of contamination and potential ecological
Adedapo , E.A., Akintokun, Oyeronke A., Anake, W. U., Benson, N. U., Olajire, A. A., Udosen, E. D., Williams, Akan B.   +6 more
core  

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

The exploitation of nutrient metals by bacteria for survival and infection in the gut.

PLoS Pathogens
Trace transition metals are required for cellular life processes, such as respiration, metabolism, and DNA replication. At high levels, nutrient metals can be toxic due to oxidative stress and mismetallation of critical metalloenzymes.
Summer D Bushman, Eric P Skaar
doaj   +1 more source

Toward Knowledge‐Based Workflows: A Semantic Approach to Atomistic Simulations for Mechanical and Thermodynamic Properties

Advanced Engineering Materials, EarlyView.
Knowledge‐based atomistic workflows are presented for mechanical and thermodynamic properties. By coupling modular simulations with ontology‐aligned metadata and provenance, Fe case studies on elastic behavior, defects, thermal properties, and Hall–Petch strengthening reveal how FAIR, queryable, and reusable simulation data can be generated. Mechanical
Abril Azócar Guzmán, Hoang‐Thien Luu, Sarath Menon, Tilmann Hickel, Nina Merkert, Stefan Sandfeld   +5 more
wiley   +1 more source

Fattori del suolo che influenzano la disponilità dei metalli per le piante [PDF]

, 1993
The knowledge of the interactions between metals and soil components is of great importance to evaluate the availability of the trace elements to plants as well as the potential danger of metals to soil and water beds.
Melis, Pietro
core  

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Analysis and discussion of four trace metals - copper, lead, mercury, and zinc - taken from selected sites along the Ottawa River in and near Lima, Ohio [PDF]

, 1972
Eight water and sediment samples collected from the Ottawa River in and near Lima, Ohio, were analyzed for their content of four trace metals - copper, lead, mercury, and zinc - by the atomic absorption process.
Webb, Roger W.
core  

Trace metals determination in water

Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering, 2000
Trace metals in water were preconcentrated with solvent extraction. Then the extracts were reextracted to water in the medium of concentrated nitric acid. The recoveries of the trace metals at concentration of 0.25pg/mL were found to be 90%-96%. The concentration of Cu, Cd, Zn and Pb were determined in river of Büyük Menderes, Sakarya and Kızılırmak At
openaire   +2 more sources