Results 31 to 40 of about 4,957,448 (283)

A Review of Fused Filament Fabrication of Metal Parts (Metal FFF): Current Developments and Future Challenges

Technologies
Fused filament fabrication (FFF) is the most widespread and versatile material extrusion (MEX) technique. Although powder-based systems have dominated the metal 3D printing landscape in the past, FFF’s popularity for producing metal parts (“metal FFF ...
Johnson Jacob, Dejana Pejak Simunec, Ahmad E. Z. Kandjani, Adrian Trinchi, Antonella Sola   +4 more
doaj   +1 more source

Estudo da labilidade de Cu(II), Cd(II), Mn(II) e Ni(II) em substâncias húmicas aquáticas utilizando-se membranas celulósicas organomodificadas Lability study of Cu(II), Cd(II), Mn(II) and Ni(II) complexed by aquatic humic substances using organomodified cellulose membranes

Química Nova, 2007
In this work commercial filters papers were organomodified with tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (3-APTS), aiming at the development of a new analytical procedure for in-situ speciation of labile and inert metal species in ...
André Henrique Rosa, Danielle Goveia, Iramaia C. Bellin, Paulo Sérgio Tonello, Maria Lúcia Pereira Antunes, Newton Luiz Dias Filho, Ubirajara Pereira Rodrigues Filho   +6 more
doaj   +1 more source

Effects of Metal and Metal Ion on Biomethane Productivity during Anaerobic Digestion of Dairy Manure

Fermentation, 2023
To overcome major limiting factors of microbial processes in anaerobic digestion (AD), metal and metal ions have been extensively studied. However, there is confusion about the effects of metals and metal ions on biomethane productivity in previous ...
Liang Yu, Do-Gyun Kim, Ping Ai, Hairong Yuan, Jingwei Ma, Quanbao Zhao, Shulin Chen   +6 more
doaj   +1 more source

Method for fabricating solar cells having integrated collector grids [PDF]

, 1979
A heterojunction or Schottky barrier photovoltaic device comprising a conductive base metal layer compatible with and coating predominately the exposed surface of the p-type substrate of the device such that a back surface field region is formed at the ...
Evans, J. C., Jr.
core   +1 more source

GROWTH OF GRAPHENE FILMS AND GRAPHENE PATTERNS [PDF]

, 2014
Large area graphene can be fabricated by depositing carbon and catalytic metal thin film(s) on a substrate, heating the carbon and the catalytic metal, and forming graphene on the substrate.
Lu, Yongfeng, Xiong, Wei, Zhou, Yunshen
core   +2 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

High Levels of Heavy Metal(loid)s Related to Biliary Hyperplasia in Hedgehogs (Erinaceus europaeus)

Animals, 2023
Heavy metal(loid) pollution of ecosystems is a current One Health problem. The liver is one of the most affected organs in cases of acute or chronic exposure to abnormal amounts of these substances, inducing histopathologic lesions.
Catarina Jota Baptista, Fernanda Seixas, José M. Gonzalo-Orden, Carla Patinha, Pedro Pato, Eduardo Ferreira da Silva, María Casero, Erica Brazio, Ricardo Brandão, Daniela Costa, Teresa Letra Mateus, Paula A. Oliveira   +11 more
doaj   +1 more source

Process for preparing liquid metal electrical contact device [PDF]

, 1977
The parts of an electrical contact device are treated by sputter etching to remove the parent metal oxide. Prior to exposure of the electrodes to any oxygen, a sacrificial metal is sputter deposited on the parts.
Berkopec, F. D., Culp, D. H., Lovell, R. R.   +2 more
core   +1 more source

Gas phase atomic metals in the circumstellar envelope of IRC+10216

, 2010
We report the results of a search for gas phase atomic metals in the circumstellar envelope of the AGB carbon star IRC+10216. The search was made using high resolution (R=50000) optical absorption spectroscopy of a backgound star that probes the envelope
Chaffee, Cherchneff, Coelho, Cordiner, Cox, Delgado Inglada, Dunbar, Field, Gilman, Glassgold, Highberger, Huggins, Huggins, Huggins, Jura, Kendall, Keyes, Kingdon, Kwan, Lafont, Lodders, Lodders, Loup, Martin, Mauron, Mauron, Mauron, McCabe, Middlemass, Morris, Morton, Morton, N. Mauron, Olofsson, P. J. Huggins, Péquignot, Ramstedt, Savage, Schöier, Tsuji, Turner, Young, Zhang, Ziurys, Ziurys, Ziurys, Ziurys   +46 more
core   +1 more source

Cross-Bridge Kelvin resistor structures for reliable measurement of low contact resistances and contact interface characterization [PDF]

, 2009
The parasitic factors that strongly influence the measurement accuracy of Cross-Bridge Kelvin Resistor (CBKR) structures for low specific contact resistances (rhoc) have been extensively discussed during last few decades and the minimum of the rhoc value,
Klootwijk, J.H., Kovalgin, A.Y., Stavitski, N., Wolters, R.A.M., Zeijl, H.W. van   +4 more
core   +4 more sources