Results 81 to 90 of about 2,062,209 (334)

Observational issues in loop quantum cosmology

, 2014
Quantum gravity is sometimes considered as a kind of metaphysical speculation. In this review, we show that, although still extremely difficult to reach, observational signatures can in fact be expected.
Barrau, A., Cailleteau, T., Grain, J., Mielczarek, J.   +3 more
core   +3 more sources

Maillard Type Reaction for Electroless Copper Plating onto Ceramic Nanoparticles

Advanced Engineering Materials, EarlyView.
This work presents the manufacturing of copper‐plated ceramic nanoparticles in an environmentally friendly way. Supported by organic functionalizations with pectin an electroless plating step can be performed. Sustainable reagents like xylose, and several amino acids are used for the reduction process.
Lukas Mielewczyk, Julia Grothe, Stefan Kaskel, Heinrich von Lintel, Katja Eichmann, Katrin Jahns, Avinash Hariharan, Abdelrahman Elsayed, Ulrich Krupp   +8 more
wiley   +1 more source

Effects of Clostridium butyricum and Lactobacillus plantarum on growth performance, immune function and volatile fatty acid level of caecal digesta in broilers

Food and Agricultural Immunology, 2018
The study was conducted to investigate the effects of Clostridium butyricum and Lactobacillus plantarum on growth performance, immune function and volatile fatty acid (VFA) level of caecal digesta in broilers. One hundred and forty broilers were assigned
Jinfeng Han, Yongwei Wang, Dan Song, Zixian Lu, Zhenglin Dong, Haijiang Miao, Weiwei Wang, Jianhua He, Aike Li   +8 more
doaj   +1 more source

Green ecological grain storage technology and quality control in China

Julius-Kühn-Archiv, 2018
Green ecological grain storage technologies (GEGSTs) are the means of controlling stored grain quality, and quality changes of stored grain are the basis of GEGSTs control.
Xu, Yongan, Wei, Lei, Cao, Yang, He, Peihuan, Shi, Tianyu, Zheng, Dan, Chen, Xin   +6 more
doaj   +1 more source

Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

Advanced Engineering Materials, EarlyView.
This study investigates the bond quality of co‐extruded aluminum–titanium hybrid profiles, focusing on the lateral angular co‐extrusion (LACE) process. It examines how heat treatments (HT) affect intermetallic phase formation, bond strength, and material properties.
Norman Mohnfeld, Ahmed Dewidar, Karim Qarbi, Hendrik Wester, Florian Patrick Schäfke, Alexej Verschinin, Hans Jürgen Maier, Sebastian Barton, Christian Klose, Johanna Uhe   +9 more
wiley   +1 more source

Atomic-scale modeling of the deformation of nanocrystalline metals [PDF]

, 1998
Nanocrystalline metals, i.e. metals with grain sizes from 5 to 50 nm, display technologically interesting properties, such as dramatically increased hardness, increasing with decreasing grain size.
A. B. Lebedev, A. H. Chokshi, A. M. El-Sherik, A. Okabe, A. S. Clarke, C. S. Pande, D. Chen, D. G. Morris, D. H. Tsai, E. A. Stern, E. O. Hall, F. D. Di Tolla, F. F. Abraham, G. D’Agostino, G. E. Fougere, G. T. Gray III, G. W. Nieman, G. W. Nieman, H. Hahn, H. Hahn, H. Jónsson, H. Natter, H. Van Swygenhoven, H. Van Swygenhoven, H. Van Swygenhoven, H. Van Swygenhoven, H. Van Swygenhoven, H. Zhu, J. C. M. Li, J. F. Lutsko, J. Grilhe, J. Lian, J. R. Ray, J. R. Ray, J. R. Weertman, J. R. Weertman, J. Schiøtz, J. Schiøtz, J. Schiøtz, K. A. Gschneidner, K. Lu, K. S. Cheung, K. W. Jacobsen, K. W. Jacobsen, K. W. Jacobsen, L. H. Friedman, L. H. Friedman, M. D. Kluge, M. P. Allen, N. J. Petch, N. Wang, N. Wang, O. H. Nielsen, P. G. Sanders, P. G. Sanders, P. G. Sanders, P. G. Sanders, P. Keblinski, R. W. Siegel, R. W. Siegel, R. W. Siegel, R. Z. Valiev, S. J. Zhou, S. Kumar, S. Li, S. R. Agnew, S. R. Phillpot, S. R. Phillpot, T. D. Shen, T. Egami, T. G. Nieh, T. R. Malow, T. Rasmussen, T. Rasmussen, T. Vegge, T. Yamasaki, V. Bulatov, W. C. Swope, Z. Jiang   +78 more
core   +4 more sources

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

Advanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel, Abdelrahman Elsayed, Lukas Mielewczyk, Katja Eichmann, Julia Grothe, Ulrich Krupp, Avinash Hariharan, Katrin Jahns   +7 more
wiley   +1 more source

Dementia with Grains (Argyrophilic Grain Disease)

Brain Pathology, 1998
Dementia with grains, also referred to as argyrophilic grain disease, is a morphological condition in elderly individuals histologically characterised by the widespread occurrence of minute, spindle or comma‐shaped argyrophilic, tau‐immunoreactive structures distinct from neuropil threads that are predominantly located in the hippocampus and related ...
openaire   +4 more sources

Grain boundary saturation and grain growth

Scripta Materialia, 2004
Abstract In nanoscale alloys with strong segregation tendency, the grain size at metastable thermodynamic equilibrium is determined by the grain boundary energy, the enthalpy change of grain boundary segregation, and the solute excess of an equivalent grain boundary monolayer at saturation.
Liu, F., Kirchheim, Reiner
openaire   +3 more sources

Analysis of Temperature and Stress Distribution on the Bond Properties of Hybrid Tailored Formed Components

Advanced Engineering Materials, EarlyView.
Hybrid materials enable high‐performance components but are challenging to process. This study explores an inductive heating concept with spray cooling for steel–aluminum specimens in a two‐step process including friction welding and cup backward extrusion.
Armin Piwek, Eduard Ortlieb, Caner‐Veli Ince, Julius Peddinghaus, Hendrik Wester, Johanna Uhe, Annika Raatz, Kai Brunotte   +7 more
wiley   +1 more source