Results 161 to 170 of about 4,236,266 (343)

Exoplanet Diversity in the Era of Space-based Direct Imaging Missions

, 2018
This whitepaper discusses the diversity of exoplanets that could be detected by future observations, so that comparative exoplanetology can be performed in the upcoming era of large space-based flagship missions.
Adibekyan, Vardan, Airapetian, Vladimir, Anbar, Ariel, Arney, Giada, Batalha, Natalie M., Beckwith, Steven, Belikov, Rus, Charnay, Benjamin, Curry, Shannon, Danchi, William, Del Genio, Anthony D., Desch, Steve, Domagal-Goldman, Shawn, Dong, Chuanfei, Ford, Eric B., Fortney, Jonathan, France, Kevin, Gelino, Dawn, Guzewich, Scott D., Haqq-Misra, Jacob, Harman, Chester E., Hartnett, Hilairy E., Hasegawa, Yasuhiro, Hebrard, Eric, Henning, Wade, Hicks, Brian, Hinkel, Natalie, Izenberg, Noam, Jensen, Adam, Jontof-Hutter, Daniel, Kane, Stephen R., Kohler, Erika, Kopparapu, Ravi, Lisse, Carey M., Lopez, Eric D., Lyra, Wladimir, Mandell, Avi, Mandt, Kathleen E., Marchis, Franck, Minniti, Dante, Moore, Bill, Mulders, Gijs D., Nixon, Conor, Pierrehumbert, Ray, Rau, Gioia, Renaud, Joe, Rinehart, Stephen, Roberge, Aki, Scharf, Caleb, Schwieterman, Edward W., Shock, Everett, Stark, Chris, Teal, Dillon, Teske, Johanna, Trainer, Melissa, Way, Michael, Wolf, Eric T., Young, Patrick   +57 more
core  

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

Long‐Term Elevated CO2 Improves Soil Health and Rice Yields in Paddy Fields

Advanced Science, EarlyView.
Combining the two longest‐running rice free‐air CO2 enrichment experiments with a global data synthesis, this study demonstrates that long‐term elevated CO2 consistently enhances soil health. In rice paddies, this improvement sustains the CO2 fertilization effect over decades.
Fan Jiang, Wenchao Du, Kees Jan van Groenigen, Josep Peñuelas, Scott X. Chang, Lian Song, Chuang Cai, Yu Wang, Lin Deng, Zhengkun Hu, Weishou Shen, Qicong Wu, Haiyang Yu, Ying Yin, Fuxun Ai, Wei Zhou, Dongming Wang, Jianqiang Sun, Xiaoyuan Yan, Renfang Shen, Jiabao Zhang, Hongyan Guo, Chunwu Zhu   +22 more
wiley   +1 more source

Enhancing the Ultrasonic Welding of Wood Using 3D Printed Lignin Energy Directors

Advanced Science, EarlyView.
Sustainable manufacturing for lightweight structures using ecofriendly materials will be key to reducing material consumption and lowering carbon footprints. Here, an approach is presented to weld wood using ultrasonic vibrations with material at the joint interface to direct energy.
Muhamad Amani, Kathrin Weiland, Mark Ablonczy, Natalia Sofia Guevara‐Sotelo, Ioannis Zygouris, Johan van Stuyvesant Meijen, Kunal Masania   +6 more
wiley   +1 more source

Bioinspired Twisted Artificial Muscles with Enhanced Performance for Underwater Applications

Advanced Science, EarlyView.
A climbing plant‐inspired twisted artificial muscle (TAM) with a braided configuration and seal‐inspired thermal insulation enables high‐performance underwater actuation. Enhanced deformation, reduced heat dissipation, and rapid motion are validated through a bionic ray that exhibits straight and turning motions.
Jin Sun, Yuan Fu, Shijng Zhang, Jing Li, Dehong Wang, Junkao Liu, Yingxiang Liu   +6 more
wiley   +1 more source

Neglected Silicon Dioxide Polymorphs as Clouds in Substellar Atmospheres

The Astrophysical Journal Letters
Direct mid-infrared signatures of silicate clouds in substellar atmospheres were first detected in Spitzer observations of brown dwarfs, although their existence was previously inferred from near-infrared spectra.
Sarah E. Moran, Mark S. Marley, Samuel D. Crossley   +2 more
doaj   +1 more source

Evaporation of extrasolar planets

, 2008
Atomic hydrogen escaping from the extrasolar giant planet HD209458b provides the largest observational signature ever detected for an extrasolar planet atmosphere. In fact, the upper atmosphere of this planet is evaporating.
Ehrenreich, David
core   +1 more source

A Shape‐Adaptive, Performance‐Programmable, Self‐Healable and On‐Demand Destructible Robotic Skin via Self‐Strengthening Dynamic Silicone

Advanced Science, EarlyView.
Enabled by the distinctive inter‐ and intra‐chain siloxane exchange in commercially available silicones as the dielectric layer, the omni‐adaptive robotic skin (OmniAdapt) integrates multiple advanced functionalities: programmable sensing performance via the self‐stiffening dielectric material, application as BPM sensor, shape adaptivity for electronic
Wusha Miao, Lara S. Laamari, Jing Yu, Sanjay Schreiber, Lukas Heer, Jiacheng Cui, Jiayuan Huang, Hedan Bai   +7 more
wiley   +1 more source

Generalized Mechanism Model for Ecosystem Hysteresis

Advanced Science, EarlyView.
A simplified model examines ecosystem transitions into alternative states after disturbances by leveraging positive and negative feedbacks. It identifies critical tipping points and quantifies hysteresis. Tests conducted on lakes, grasslands, and pitcher‐plant leaves align closely with empirical data and enable the prediction of recovery trajectories ...
Yanbin Hao, Xin Wang, Jie Liu, Mingzi Wu, Jianqing Du, Kai Xue, Xiaoning Song, Xiaoyong Cui, Tong Zhao, Yanfen Wang   +9 more
wiley   +1 more source

Creation of fully vectorized FORTRAN code for integrating the movement of dust grains in interplanetary environments [PDF]

The main objective is to improve the performance of a specific FORTRAN computer code from the Planetary Sciences Division of NASA/Johnson Space Center when used on a modern vectorizing supercomputer.
Colquitt, Walter
core   +1 more source