Results 41 to 50 of about 76,360 (309)

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Response patterns of moss to atmospheric nitrogen deposition and nitrogen saturation in an urban–agro–forest transition [PDF]

Atmospheric Chemistry and Physics
Increasing trends of atmospheric nitrogen (N) deposition resulting from a large number of anthropogenic emissions of reactive N are dramatically altering the global biogeochemical cycle of N.
O. Deng, O. Deng, Y. Chen, J. Zhao, X. Li, W. Zhou, W. Zhou, T. Lan, T. Lan, D. Ou, D. Ou, Y. Zhang, Y. Zhang, J. Liu, J. Liu, L. Luo, Y. He, H. Yang, R. Huang, R. Huang   +19 more
doaj   +1 more source

Nitrogen and sulfur deposition on regional and global scales : a multimodel evaluation [PDF]

, 2006
[1] We use 23 atmospheric chemistry transport models to calculate current and future (2030) deposition of reactive nitrogen (NOy, NHx) and sulfate (SOx) to land and ocean surfaces.
Galloway, J., N. BELL, J. RODRIGUEZ, L. W. HOROWITZ, Horowitz, L., Pitari, G., M. SCHULTZ, Krol, M.C., Cofala, J., Hauglustaine, D., Collins, B., Lamarque, Jean-François, S. SZOPA, Lawrence, M., D. STEVENSON, Dentener, F., Muller, J. F., Fiore, A., Bergmann, D., Horowitz, L. W., Montanaro, V., Szopa, S., van Noije, T. P. C., Stevenson, D., Strahan, S., Lamarque, J. F., J. F. LAMARQUE, M. GAUSS, Rodriguez, J., Kulshrestha, U. C., Muller, J.F., T. BUTLER, Shindell, D., D. HAUGLUSTAINE, Van Noije, T., Galy-Lacaux, C., Galy-Lacaux, Corinne, C. ATHERTON, Mueller, J. F., M. KROL, M. LAWRENCE, Krol, M., D. BERGMAN, Bell, N., Stevenson, D. S.; id_orcid, J. COFALA, Eickhou, B., Rast, S., R. DOHERTY, K. ELLINGSEN, S. RAST, Fiore, Arlene M., J. DREVET, U. C. KULSHRESTHA, Kulshrestha, U.C., Bey, I., J. F. MÜLLER, S. STRAHAN, Horowitz, Larry W., Drevet, J., T. VAN NOIJE, B. COLLINS, Eickhout, B., Strahan, S. E., Solmon, F., V. MONTANARO, J. GALLOWAY, Kulshrestha, U., B. EICKHOUT, Noije, T., van, Atherton, C., Fiore, A.M., Wild, O., Sudo, K., D. SHINDELL, Bergman, D., Lamarque, J.F., Bey, Isabelle, PITARI, Giovanni, Lamarque, J., Laval-Szopa, Sophie, C. GALY LACAUX, Müller, J., Fiore, A. M., F. SOLMON, Sanderson, M., Schultz, M., Doherty, R., Horowitz, L.W., Ellingsen, K., A. M. FIORE, M. SANDERSON, I. BEY, DENTENER, F, Butler, T., K. SUDO, Gauss, M., O. WILD   +97 more
core   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

A Systems-Based Approach to Ecosystem Services Valuation of Various Atmospheric Calcium Deposition Flows

Resources, 2019
Atmospheric resources are very important for assessing ecosystem services at different administrative levels (e.g., state, region, etc.). Quantification of atmospheric calcium (Ca2+) deposition on the total basis provides incomplete information about the
Elena A. Mikhailova, Christopher J. Post, Mark A. Schlautman, Garth R. Groshans, Michael P. Cope, Lisha Zhang   +5 more
doaj   +1 more source

Atmospheric Deposition and Element Accumulation in Moss Sampled across Germany 1990–2015: Trends and Relevance for Ecological Integrity and Human Health

Atmosphere, 2021
Deposition of N and heavy metals can impact ecological and human health. This state-of-the-art review addresses spatial and temporal trends of atmospheric deposition as monitored by element accumulation in moss and compares heavy metals Critical Loads ...
Angela Schlutow, Winfried Schröder, Stefan Nickel   +2 more
doaj   +1 more source

Canopy influence on trace metal atmospheric inputs on forest ecosystems: Speciation in throughfall [PDF]

, 2010
Trace Metal (TM: Cd, Cu, Ni, Pb, Sb and Zn) atmospheric inputs have been studied on six forested sites. In order to evaluate canopy interaction with atmospheric inputs, TM have been measured in both Open Field Precipitation (OFP) and Throughfall (TF ...
Probst, A., Dumat, C., Gandois, L., Dumat, Camille, Gandois, Laure, Probst, Anne, Tipping, E.   +6 more
core   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

Assessment of Fluxes and Ecological and Health Risks of Toxic Trace Elements in Atmospheric Deposition from the Baicheng-Songyuan Area, Jilin Province, Northeast China

Atmosphere
A total of 56 atmospheric deposition samples were collected on a yearly basis from the Baicheng-Songyuan areas, Jilin Province, Northeast China. Each sample was subdivided into wet (soluble) and dry (insoluble) fractions, and the concentrations of toxic ...
Yinghong Liu, Wen Gao, Sheli Chai
doaj   +1 more source