Results 71 to 80 of about 91,165 (293)

3D Printing of Highly Dense and Translucent Zirconia Parts for Dental Applications: Effect of Filament Overlapping

Advanced Materials Technologies, EarlyView.
This study formulated a 5Y‐PSZ zirconia paste for extrusion‐based additive manufacturing via direct ink writing, producing dense ceramic structures for dental applications. A colloidal approach with 47 vol% nanometric powder and tailored additives optimized rheology and printability.
Juliana de Freitas Gouveia Silva, Manuel Fellipe Rodrigues Pais Alves, Ana Carolina da Silva, Tiago Moreira Bastos Campos, Renata Marques De Melo, Susana Maria Henriques Olhero   +5 more
wiley   +1 more source

Is planetary migration inevitable?

, 2003
According to current theories, tidal interactions between a disk and an embedded planet may lead to the rapid migration of the protoplanet on a timescale shorter than the disk lifetime or estimated planetary formation timescales. Therefore, planets can form only if there is a mechanism to hold at least some of the cores back on their way in.
openaire   +4 more sources

Outward Migration of a Gas Accreting Planet: A Semianalytical Formula

The Astrophysical Journal
Type II orbital migration is a key process to regulate the mass and semimajor axis distribution of exoplanetary giant planets. The conventional formula of Type II migration generally predicts too rapid inward migration to reconcile with the observed ...
Shigeru Ida, Ya-Ping Li, Jun-Peng Pan, Yi-Xian Chen, Douglas N. C. Lin   +4 more
doaj   +1 more source

Evolution of inclined planets in three-dimensional radiative discs

, 2011
While planets in the solar system only have a low inclination with respect to the ecliptic there is mounting evidence that in extrasolar systems the inclination can be very high, at least for close-in planets.
Ayliffe, B. Bitsch, Baruteau, Bate, Bitsch, Bryden, Burns, Chatterjee, Cresswell, Crida, Crida, D’Angelo, D’Angelo, Goldreich, Holman, Klahr, Kley, Kley, Kley, Levermore, Marzari, Marzari, Masset, Matsumura, Paardekooper, Paardekooper, Paardekooper, Papaloizou, Tanaka, Tanaka, Terquem, Triaud, W. Kley, Ward, Winn, Ziegler   +35 more
core   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

Advanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

The Dynamical Origin of the Multi-Planetary System HD45364

, 2009
The recently discovered planetary system HD45364 which consists of a Jupiter and Saturn mass planet is very likely in a 3:2 mean motion resonance. The standard scenario to form planetary commensurabilities is convergent migration of two planets embedded ...
Correia, Cresswell, Crida, Goldreich, H. Rein, Hayashi, J. C. B. Papaloizou, Kley, Kley, Kley, Lee, Lissauer, Masset, Masset, Masset, Mizuno, Nelson, Nelson, Papaloizou, Papaloizou, Peplinski, Pierens, Pollack, Rein, Sasselov, Snellgrove, Sándor, Tanaka, W. Kley, Wuchterl   +29 more
core   +1 more source

An Increasing Misalignment Between Crop Distribution and Environmental Resources Under Climate Change in China

Advanced Science, EarlyView.
Climate change reshapes the spatial alignment between crop production and environmental resources. Using multi‐source data and a crop model, integrated climatic, water, and soil endowments for maize and wheat are quantified and compared with harvest distributions.
Zheng'e Su, Zhentao Zhang, Jin Zhao, Xia Liang, Chuang Zhao, Zhijuan Liu, Minghao Zhuang, Jing Sun, Bo Lu, Ke Liu, Johannes W. M. Pullens, Matthew T. Harrison, Deli Chen, Xiaoguang Yang   +13 more
wiley   +1 more source

Nitrogen Loss from Pluto’s Birth to the Present Day via Atmospheric Escape, Photochemical Destruction, and Impact Erosion

The Planetary Science Journal
We estimate the loss of nitrogen from Pluto over its lifetime, including the giant planet instability period, which we term the “Wild Years.” We analyze the orbital migration of 53 simulated Plutinos, which are Kuiper Belt Objects (KBOs) captured into 3 ...
Perianne E. Johnson, Leslie A. Young, David Nesvorný, Xi Zhang   +3 more
doaj   +1 more source

Period ratios in multi-planetary systems discovered by Kepler are consistent with planet migration

, 2012
The Kepler planet candidates are an interesting testbed for planet formation scenarios. We present results from N-body simulations of multi-planetary systems that resemble those observed by Kepler.
Beaugé, Crida, Crida, Goldreich, Gressel, Hanno Rein, Kley, Lee, Lee, Lithwick, Marcy, Moorhead, Mustill, Nelson, Paardekooper, Papaloizou, Rein, Rein, Rivera, Snellgrove, Terquem, Tremaine, Veras, Ward, Weidenschilling, Wu, Zakamska, Zhou   +27 more
core   +1 more source

Bioenergy Cropping Reduces the Spatiotemporal Scaling of Soil Bacterial Biodiversity

Advanced Science, EarlyView.
Consistent with patterns observed in plant and animal communities, soil bacterial communities exhibit significant species–time–area and phylogenetic–time–area relationships independent of nested structure. Bioenergy cropping significantly reduces the spatiotemporal scaling rates, particularly in sandy loam soils.
Zhencheng Ye, Jialiang Kuang, Colin T. Bates, Arthur Escalas, Daliang Ning, Liyou Wu, Suo Liu, Sihang Deng, Jiesi Lei, Xiangwen Chen, Jennifer Pett‐Ridge, Malay Saha, Lauren Hale, Gangsheng Wang, Renmao Tian, Ying Fu, Yu Tang, Mary Firestone, Jizhong Zhou, Yunfeng Yang   +19 more
wiley   +1 more source