Results 111 to 120 of about 12,220 (308)

Analytical Solutions for Planet-scattering Small Bodies

The Astronomical Journal
Gravitational scattering of small bodies (planetesimals) by a planet remains a fundamental problem in celestial mechanics. It is traditionally modeled within the circular restricted three-body problem, where individual particle trajectories are obtained ...
Yukun Huang, Brett Gladman, Eiichiro Kokubo   +2 more
doaj   +1 more source

Binding Zinc and Oxo-Vanadium Insulin-Mimetic Complexes to Phosphatase Enzymes: Structure, Electronics and Implications

Molecules
We explore the structural and electronic properties of representative insulin-mimetic oxovanadium and zinc complexes as computed in vacuum, in water clusters and upon binding to PTEN and PTP1B phosphatases.
Victor V. Volkov, Carole C. Perry, Riccardo Chelli   +2 more
doaj   +1 more source

Flight Performance Handbook for Orbital Operations: Orbital Mechanics and Astrodynamics Formulae, Theorems, Techniques, and Applications

, 1961
This handbook provides parametric data useful both to the space vehicle designer and mission analyst. It provides numerical and analytical relationships between missions and gross vehicle characteristics as a function of performance parameters.
Moe, Kenneth, Weiser, Peter B., Levy, Ezra C., Mickelwait, A.B., Ireland, Richard O., Ambrosio, Alphonso, Wolverton, R.W., Kang, Garfield, Liu, Anthony, Moe, Mildred M., Dergarabedian, P., Cooper, Donald H., Whitford, R.K., Marcus, Silvia R., Scheuer, Ernest M., Lunn, Richard L., Pitton, A.R., Tompkins, E.H., Jensen, Arnold A., Dethlefsen, D.G., Blitzer, Leon, Conte, S.D.   +21 more
core  

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

Advanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo, Mingqi Xiao, Fangyuan Zhang, Hui Li, Yuli Jia, Zhenfang Zhang, Liqun Ye, Bo Yang, Tianyi Ma   +8 more
wiley   +1 more source

The Influence of General Relativity on the Spins of Celestial Bodies in Inclined Orbits

The Astrophysical Journal
Through the Rossiter–McLaughlin effect, several hot Jupiters have been found to exhibit spin–orbit misalignment and even retrograde orbits. The high obliquity observed in these planets can be attributed to two primary formation mechanisms, as summarized ...
Huan-Rong Yuan, Ying Wang, Xin Wu, Ji-Wei Xie, Hui-Gen Liu, Ji-Lin Zhou, Wei Sun   +6 more
doaj   +1 more source

Coagulative Granular Hydrogels with an Enzyme Catalyzed Fibrin Network for Endogenous Tissue Regeneration

Advanced Healthcare Materials, EarlyView.
Coagulative granular hydrogels are composed of packed thrombin‐functionalized microgels that catalyze the conversion of fibrinogen into a secondary fibrin network, filling the interstitial voids. This bio‐inspired approach stabilizes the biomaterial to match the robustness of bulk hydrogels without compromising injectability, mimicking the initial ...
Zhipeng Deng, Camila B. Tovani, Simona Bianco, Gianni Comandini, Aya Elghajiji, Mina Aleemardani, Roxana Moscalu, Jeremie Zappia, Bianca Fernandes, Olivia Annett, Chrissy L. Hammond, Jason Wong, Dave J. Adams, Fabrizio Scarpa, Michael R. Whitehouse, Annela M. Seddon, James P. K. Armstrong   +16 more
wiley   +1 more source

Program plan for earth-orbital low g heat transfer and fluid mechanics experiments

, 1966
Program plan for earth orbital low gravity heat transfer and fluid mechanics ...
Nein, M. E., Arnett, C. D.
core  

Solar sailing: orbital mechanics and mission applications

, 2003
Solar sailing is a unique and elegant form of propulsion which transcends reliance on reaction mass. Rather than carrying propellant, solar sails gain momentum from photons, the quantum packets of energy from which sunlight is composed. Since solar sails
McInnes, C.R.
core   +1 more source

On the singularity problem in orbital mechanics [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
Xu, G., Xu, J.
openaire   +3 more sources

Copolymers of Poly(Butylene Trans‐1,4‐Cyclohexanedicarboxylate)/Pripol as New Biomaterial Platform for Small Diameter Vascular Graft

Advanced Healthcare Materials, EarlyView.
Electrospun tubular scaffolds from novel PBCE‐based copolyesters and blends were designed as candidates for small‐diameter vascular grafts. They combine defect‐free architecture, blood‐compatible surfaces, and mechanical properties comparable to native vessels.
Edoardo Bondi, Gabriele Obino, Giulia Guidotti, Alberto Sensini, Martijn van Griensven, Antonio Junior Lepedda, Nadia Lotti, Lorenzo Moroni   +7 more
wiley   +1 more source