Results 31 to 40 of about 315,273 (243)

White Christian Nationalism: Adult Education and Threats to Democracy

New Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Adult education has a historical and ongoing commitment to fostering democratic relationships, demonstrated by the tendency of adult education to be called upon when social change and realignment are most desirable. This article considers the philosophical and pragmatic possibilities for adult education at this moment, when White Christian ...
Ralf St. Clair, Lyn Tett, Rob Black
wiley   +1 more source

The interplay between X-ray photoevaporation and planet formation

, 2013
We assess the potential of planet formation instigating the early formation of a photoevaporation driven gap, up to radii larger than typical for photoevaporation alone.
Armitage, Philip J., Ercolano, Barbara, Owen, James E., Rosotti, Giovanni P.   +3 more
core   +1 more source

Planet Formation with Migration [PDF]

The Astrophysical Journal, 2006
In the core-accretion model, gas-giant planets form solid cores which then accrete gaseous envelopes. Tidal interactions with disk gas cause a core to undergo inward type-I migration in 10^4 to 10^5 years. Cores must form faster than this to survive.
openaire   +4 more sources

Retrotransposon Expression Is Upregulated in Adulthood and Suppressed during Regeneration of the Limb in the Axolotl (Ambystoma mexicanum)

Advanced Biology, EarlyView.
The axolotl's remarkable regenerative abilities decline with age, the causes may include the numerous repetitive elements within its genome. This study uncovers how Ty3 retrotransposons and coexpression networks involving muscle and immune pathways respond to aging and regeneration, suggesting that transposons respond to physiological shifts and may ...
Samuel Ruiz‐Pérez, Nicolás Alcaraz, Karla Torres‐Arciga, José Antonio Ocampo‐Cervantes, Alejandra Cervera, Clementina Castro‐Hernández, Cynthia Gabriela Sámano‐Salazar, Ernesto Soto‐Reyes, Rodrigo González‐Barrios   +8 more
wiley   +1 more source

Migration and giant planet formation

, 2004
We extend the core-accretion model of giant gaseous planets by Pollack et al. (\cite{P96}) to include migration, disc evolution and gap formation. Starting with a core of a fraction of an Earth's mass located at 8 AU, we end our simulation with the onset
Alibert, Y., Benz, W., Mordasini, C.
core   +1 more source

Planet Formation and Disk-Planet Interactions [PDF]

, 2019
This review is based on lectures given at the 45th Saas-Fee Advanced Course 'From Protoplanetary Disks to Planet Formation' held in March 2015 in Les Diablerets, Switzerland. Starting with an overview of the main characterictics of the Solar System and extrasolar planets, we describe the planet formation process in terms of the sequential accretion ...
openaire   +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

Earth and Terrestrial Planet Formation

, 2015
The growth and composition of Earth is a direct consequence of planet formation throughout the Solar System. We discuss the known history of the Solar System, the proposed stages of growth and how the early stages of planet formation may be dominated by ...
Agnor, Alexander, Allègre, Becker, Bitsch, Blum, Bottke, Bottke, Brasser, Briceño, Bryden, Carballido, Castillo-Rogez, Castillo-Rogez, Chambers, Chambers, Chambers, Chambers, Chambers, Chambers, Chapman, Cohen, Crida, Crida, Cuzzi, Cuzzi, D'Angelo, Dauphas, DeMeo, DeMeo, Dubrulle, Elkins-Tanton, Fernandez, Fischer, Goldreich, Gomes, Gomes, Greenberg, Haisch, Halliday, Hansen, Ida, Ida, Ida, Ikoma, Iwasaki, Izidoro, Jacobsen, Jacobson, Jacobson, Jin, Johansen, Johansen, Kita, Kley, Kley, Kobayashi, Kobayashi, Kokubo, Kokubo, Kokubo, Lambrechts, Lambrechts, Lambrechts, Laskar, Levison, Levison, Levison, Levison, Levison, Levison, Lin, Lissauer, Lécuyer, Malhotra, Mamajek, Marchi, Marchi, Marty, Masset, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morishima, Muralidharan, Murray-Clay, Nagasawa, Nakagawa, Nesvorný, Nesvorný, Nimmo, O'Brien, O'Brien, Okuzumi, Ormel, Owen, Papaloizou, Papaloizou, Pfalzner, Pierens, Pierens, Pollack, Raymond, Raymond, Ryder, Ryder, Safronov, Snellgrove, Strom, Taylor, Tera, Thommes, Touboul, Tsiganis, Villeneuve, Wada, Wada, Wada, Walker, Walsh, Walsh, Walsh, Walsh, Ward, Weidenschilling, Weidenschilling, Weidenschilling, Weiss, Wetherill, Wetherill, Wetherill, Wetherill, Whipple, Yin, Youdin, Youdin, Zhou, Zsom, Ćuk, Ćuk   +145 more
core   +1 more source

Metallicity effect and planet mass function in pebble-based planet formation models [PDF]

, 2018
One of the main scenarios of planet formation is the core accretion model where a massive core forms first and then accretes a gaseous envelope. This core forms by accreting solids, either planetesimals, or pebbles. A key constraint in this model is that
Alibert, Yann, Ataiee, Sareh, Benz, Willy, Brügger, Natacha   +3 more
core   +2 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