Results 51 to 60 of about 202,247 (341)

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

Advanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör, Moritz Grünewald, Kevin Popp, Ihsan Murat Kusoglu, Stephan Barcikowski, Stan Gann, Thomas Schuffenhauer, Martin Bastian, Claas Bierwisch, Johannes Rudloff   +9 more
wiley   +1 more source

Relationship between Lesion Parameters after Radiofrequency Catheter Ablation in Striated Muscles and Parenchymal Tissue

Medicina
Background and Objectives: Radiofrequency catheter ablation (RFCA) is a highly successful intervention. By comparing the lesion changes in prostate parenchymal and striated muscle tissues after RFCA with and without cooling, it was possible to assess the
Aldona Gružienė, Julius Liobikas, Artūrs Paparde, Sigita Kerzienė, Jovita Gružaitė, Darijus Skaudickas, Povilas Lenčiauskas, Kristaps Circenis, Gintautas Vaitiekaitis   +8 more
doaj   +1 more source

Quotient supermanifolds [PDF]

Bulletin of the Australian Mathematical Society, 1998
A necessary and sufficient condition for the existence of a supermanifold structure on a quotient defined by an equivalence relation is established. Furthermore, we show that an equivalence relation R on a Berezin-Leĭtes-Kostant supermanifold X determines a quotient supermanifold X/R if and only if the restriction R0 of R to the underlying smooth ...
Bartocci, C., Bruzzo, Ugo, Hernández Ruipérez, D., Pestov, V.   +3 more
openaire   +2 more sources

Quality Enhancement of Laser Powder‐Bed Fusion Parts by Acoustically Assisted Additive Manufacturing by Laser Powder‐Bed Fusion and its Application to Lattice Structures

Advanced Engineering Materials, EarlyView.
Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley   +1 more source

Mesoporous Silica Microspheres by Super‐Fast Alkaline Etching of Micrometer‐Sized Stöber Particles

Advanced Engineering Materials, EarlyView.
Microscale silica particles are prepared along with a modified, scalable Stöber synthesis using the continuous addition of tetraethoxy silane to an ethanolic solution of ammonia with KCl. Etching with hydroxide ions at 95 °C gave porous analogs within minutes. Monodisperse particles are isolable in high yield after precipitation in ethanol.
Adrian Vaghar, Georgij Jegorenkov, Gerrit A. Luinstra   +2 more
wiley   +1 more source

Extensions de H-objets [PDF]

Rendiconti di Matematica e delle Sue Applicazioni, 2011
Dans une catégorie avec homotopie, on définit la notion de H-objet. Les notions de quotient et de noyau mènent à la définition des extensions de H-objets.
Georges Hoff
doaj  

The Association for Human Pharmacology in the Pharmaceutical Industry London Meeting 2018: Brexit and Other Challenges in Early Phase Drug Development

Frontiers in Pharmacology, 2018
The Association for Human Pharmacology in the Pharmaceutical Industry (AHPPI) annual meeting focused on the changing face of early phase drug development and opened with a keynote speech concerning the revolution in pharmaceutical medicine over the last ...
Susan Reijntjes, Muna Albayaty, James Bush, Joseph Cheriyan, Anthea Cromie, Annelize Koch, Michael Hammond, Stuart Mair, Peter Scholes, Ulrike Lorch, Steffan Stringer, Jorg Taubel, Timothy C. Hardman   +12 more
doaj   +1 more source

On extreme values of Nehari manifold method via nonlinear Rayleigh's quotient [PDF]

, 2015
We study applicability conditions of the Nehari manifold method for the equation of the form $ D_u T(u)-\lambda D_u F(u)=0 $ in a Banach space $W$, where $\lambda$ is a real parameter.
Y. Il’yasov
semanticscholar   +1 more source

Quotient-Comprehension Chains [PDF]

Electronic Proceedings in Theoretical Computer Science, 2015
In Proceedings QPL 2015, arXiv:1511 ...
Kenta Cho, Bart Jacobs, Bas Westerbaan, Bram Westerbaan   +3 more
openaire   +7 more sources

Optimized Strategy for Fabricating High‐Aspect‐Ratio Periodic Structures Over Large Areas Using ps‐Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Picosecond direct laser interference patterning (DLIP) enables precise microstructure fabrication on stainless steel. Using a multiscan approach, high‐aspect‐ratio patterns are achieved. Fluence influences structure growth and homogeneity, with smaller periods yielding better uniformity.
Fabian Ränke, Marcelo Sallese, Marcos Soldera, Ignacio Tabares, Flavio Soldera, Andrés Fabián Lasagni   +5 more
wiley   +1 more source