Results 51 to 60 of about 143,454 (291)

Acceleration disturbances and requirements for ASTROD I

, 2006
ASTRODynamical Space Test of Relativity using Optical Devices I (ASTROD I) mainly aims at testing relativistic gravity and measuring the solar-system parameters with high precision, by carrying out laser ranging between a spacecraft in a solar orbit and ...
, Anza S, Balogh A, Bao G, Bec-Borsenberger A, Bender P, Blaser J P, Cavalleri A, Dolesi R, Fichter W, Gill D K, Hammesfahr A, Hanson J, Jackson J D, Jafry Y, Lang K R, Ni W-T, Ni W-T, Rodrigues M, Rüdiger A, Sachie Shiomi, Schumaker B L, Schumaker B L, Shaul D N A, Shiomi S, Silvestri Z, Speake C C, Speake C C, Stebbins R T, Touboul P, Vitale S, Vitale S, Vitale S, Vitale S, Weber W J Cruise M Saulson P, Wei-Tou Ni, Worden P, Xia Y, Zhou Z B   +38 more
core   +1 more source

Purpose‐Adaptable Reinforced 3D Hyaluronic‐Acid Based Platform to Study Pathomechanisms of the Central Nervous System

Advanced Healthcare Materials, EarlyView.
Platform system to create biofabricated 3D spinal cord tissue models: Combining high resolution PCL fiber placement, a customized, hyaluronic acid‐based hydrogel, two cell types (spinal cord neurons and astrocytes) together with three distinct laminin isoforms allow the formation of functional cell–cell network interactions.
Nicoletta Murenu, Esra Tuerker, Anna‐Lena Wiessler, Jessica Faber, Ievgenii Liashenko, Jeanette Weigelt, Jörg Tessmar, Paul D. Dalton, Sibylle Jablonka, Mateo S. Andrade Mier, Carmen Villmann, Silvia Budday, Natascha Schaefer   +12 more
wiley   +1 more source

Modeling and position control of a new quad-rotor unmanned aerial vehicle with tilt-wing mechanism [PDF]

, 2008
In this work a dynamic model of a new quadrotor aerial vehicle that is equipped with a tilt-wing mechanism is presented. The vehicle has the capabilities of vertical take-off/landing (VTOL) like a helicopter and flying horizontal like an airplane ...
Aksit, Mahmut Faruk, Akşit, Mahmut Faruk, Cetinsoy, Ertugrul, Gulez, Kayhan, Gülez, Kayhan, Kandemir, İlyas, Kandemir, Ilyas, Oner, Kaan Taha, Unel, Mustafa, Çetinsoy, Ertuğrul, Öner, Kaan Taha, Ünel, Mustafa   +11 more
core  

Increasing biomass in Amazonian forest plots [PDF]

, 2004
A previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink.
Abel Monteagudo, Anthony Di Fiore, David A. Neill, J. Natalino M. Silva, Luzmila Arroyo, Malhi Y., Nigel C. A. Pitman, Niro Higuchi, O. L. Phillips, Oliver L. Phillips, Percy Núñez Vargas, Rodolfo Vásquez Martínez, Samuel Almeida, Simon L. Lewis, Susan G. Laurance, Terry Erwin, Timothy J. Killeen, Timothy R. Baker, William F. Laurance, Y. Malhi, Yadvinder Malhi   +20 more
core   +4 more sources

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

Advanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim, Jinghui Wang, Yinding Chi, Jingxian Wu, Alicia Ng, Guanda Qiao, Honglin Tan, Miroslaw Janowski, Piotr Walczak, Yajie Liang, Shu Yang   +10 more
wiley   +1 more source

All-propulsion design of the drag-free and attitude control of the European satellite GOCE

, 2009
This paper concerns the drag-free and attitude control (DFAC) of the European Gravity field and steady-state Ocean Circulation Explorer satellite (GOCE), during the science phase.
Canuto, Canuto, Canuto, Canuto, DeBra, Donati, Enrico Canuto, Fichter, Fichter, Johannessen, Koenig, Lange, Luca Massotti, Picone, Tapley, Touboul, Vaillon, Vallado, Vaniček   +18 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Design and Control Strategy of a Non-Gravity Axes Tracking System for a Rigid Suspension-Type Astronaut Operational Training System

Actuators
Low-gravity and microgravity simulation devices for training astronauts to manipulate objects under terrestrial conditions are critical for improving operational performance and efficiency in extraterrestrial environments while minimizing risk.
Zhenhan Wang, Lixun Zhang, Feng Xue, Yuhe Fan, Bendong Xian   +4 more
doaj   +1 more source

Traveling wave packets of total electron content disturbances as deduced from global GPS network data

, 2002
We identified a new class of mid-latitude medium-scale traveling ionospheric disturbances (MS TIDs), viz. traveling wave packets (TWPs) of total electron content (TEC) disturbances.
Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Afraimovich, Al'perovich, Baker, Bertin, Bertin, Davies, Davies, Duffus, E.L. Afraimovich, Francis, Hines, Hines, Hocke, Hung, Jacobson, Jacobson, Kalikhman, Kersly, Klobuchar, Klostermeyer, Mannucci, Mercier, Mercier, N.P. Perevalova, Okuzawa, Oliver, Otsuka, Rishbeth, S.V. Voyeikov, Saito, Saito, Shan, Shiokawa, Skone, Skone, Somsikov, Spoelstra, Stobie, Velthoven, Waldock, Waldock, Waldock, Yakovets   +51 more
core   +1 more source

Capillary-gravity waves: The effect of viscosity on the wave resistance [PDF]

, 1999
The effect of viscosity on the wave resistance experienced by a 2d perturbation moving at uniform velocity over the free surface of a fluid is investigated. The analysis is based on Rayleigh's linearized theory of capillary-gravity waves.
Acheson D. J., Bacri J.-C., D Richard, E Raphaël, Havelock T. H., Lamb H., Landau L. D., Lighthill J., Morse P. M., Webster W. C.   +9 more
core   +1 more source