Results 111 to 120 of about 1,184,149 (273)

Symmetries and Lie algebra of the differential-difference Kadomstev-Petviashvili hierarchy

, 2009
By introducing suitable non-isospectral flows we construct two sets of symmetries for the isospectral differential-difference Kadomstev-Petviashvili hierarchy.
Chen D. Y., Chen D. Y., Chen D. Y., DA-JUN ZHANG, DENG-YUAN CHEN, Güngör F., Li Y. S., XIAN-LONG SUN, XIAO-YING ZHU   +8 more
core   +1 more source

A study of saturation number [PDF]

, 2017
Thesis (M.S.) University of Alaska Fairbanks, 2017This paper seeks to provide complete proofs in modern notation of (early) key saturation number results and give some new results concerning the semi-saturation number.
Burr, Erika
core  

СИНТЕЗ ПРОСТАГЛАНДИНОВ F И I РЯДА 3. СИНТЕЗ 3-ЭНДО-ГИДРОКСИ-2-ЭКЗО-[(E)-3-ОКСООКТ-1-ЕНИЛ]-6-ОКСАБИЦИКЛО[3.3.O]ОКТАН-7-ОНА ЧЕРЕЗ ЭТИЛЕНОВЫЙ КЕТАЛЬ 2,3-ЭНДО- ЭПОКСИБИЦИКЛ О[3.2.O]ГЕПТАН-6-ОНА [PDF]

, 1988
L Lahe, Ü Lille, M Lopp, A Pals, O Parve   +4 more
openalex   +1 more source

Numerical Studies of Influencing Factors on the Homogeneity of the Powder Mixture during the Powder Spreading Process of Powder Bed Fusion–Laser Beam/Metal

Advanced Engineering Materials, EarlyView.
AISI 304L stainless steel powder is mixed with silicon nitride (Si3N4) powder and processed by PBF‐LB/M, allowing partial retention of Si3N4. The numerical approach effectively predicts the Si3N4 powder homogeneity and N content distribution on the powder bed. Recent studies have focused on the alloying of nitrogen (N) in high‐alloy stainless steels by
Yuanbin Deng, Ziping Sang, Jiali Zhang, Felix Radtke, Louis Becker, Simone Herzog, Sebastian Weber, Christoph Broeckmann   +7 more
wiley   +1 more source

SYNTHESIS OF PROSTAGLANDINS OF F AND I SERIES 5. MANDELIC ACID DIASTEREOMERIC DERIVATIVES OF 2-EXO-BROMO-3-ENDO-HYDROXYBICYCLO[3.2.O]HEPTAN-6-ONE. A NEW SIMPLE WAY TO OPTICALLY ACTIVE PROSTANOID SYNTHONS [PDF]

, 1989
L Lahe, Ü Lille, M Lopp, A Pals, O Parve, T Välimäe   +5 more
openalex   +1 more source

Multifunctional Design of Triply Periodic Minimal Surface Structures for Temporary Pediatric Fixation Devices

Advanced Engineering Materials, EarlyView.
A metallic implant's higher stiffness compared to the surrounding bone leads to stress shielding problems, causing bone density reduction and bone growth interference in pediatric patients. 3D‐printed triply periodic minimal surface structures present a promising engineering solution.
Ali Ebrahimzadeh Dehaghani, Zia Javanbakht, Martina Barzan, David G. Lloyd, Stefanie Feih   +4 more
wiley   +1 more source

Anomaly Detection Method for Hybrid Workpieces Using Dynamic Time Warping

Advanced Engineering Materials, EarlyView.
Monitoring of hybrid workpieces: when machining hybrid workpieces, unavoidable axial deviations of the material transition zone cause temporal shifts in the process force signals. A new anomaly detection method based on dynamic time warping is proposed to detect material defects.
Berend Denkena, Benjamin Bergmann, Heinrich Klemme, Miriam Handrup   +3 more
wiley   +1 more source

Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves

Advanced Engineering Materials, EarlyView.
Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey, Jaime del Moral, Stefan Jacob, Laura Montes, Jorge Gil‐Rostra, Alejandro Frechilla, Atefeh Karimzadeh, Victor J. Rico, Raul Kanter, Niklas Kandelin, Carmen López‐Santos, Heli Koivuluoto, Luis Angurel, Andreas Winkler, Ana Borrás, Agustin R. González‐Elipe   +15 more
wiley   +1 more source

Trans‐Conductive Melt Pool Scaling and its Implications for Parameter Transfer in Laser Powder Bed Fusion for Metals with High Thermal Diffusivity

Advanced Engineering Materials, EarlyView.
Developing process parameters for the laser‐based Powder Bed Fusion of metals can be a tedious task. Based on melt pool depth, the process parameters are transferable to different laser scan speeds. For this, understanding the melt pool scaling behavior is essential, particularly for materials with high thermal diffusivity, as a change in scaling ...
Markus Döring, Matthias Gehring, Michael Schmidt   +2 more
wiley   +1 more source

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing – Part I: Surface, Flowability, and Optical Properties of SiC, Si, and Si3N4 Coated Metal Powders

Advanced Engineering Materials, EarlyView.
Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke, Nick Hantke, Harald Zetzener, Jan T. Sehrt, Arno Kwade   +4 more
wiley   +1 more source