Results 91 to 100 of about 1,052,332 (366)

Morphogenic Growth 3D Printing

open access: yesAdvanced Materials, EarlyView.
I additive manufacturing process exploits the spatial propagation of a polymerization reaction front to produce 3D polymer parts 10× faster and 1000× more energy efficient than the fastest stereolithography. In contrast with existing 3D printing, this morphogenic process is inspired by biological “growth and form” due to the self‐directed propagation ...
Yun Seong Kim   +10 more
wiley   +1 more source

The Titius-Bode law of planetary distances: new approach [PDF]

open access: yesarXiv, 2006
The new approach of the regular spacing of planetary orbits and planet mass distribution in the Solar system is considered. The relative planetary distances will be represented as the inverse composite probabilities of two discrete distributions with one fitted parameter.
arxiv  

Pushing Radiative Cooling Technology to Real Applications

open access: yesAdvanced Materials, EarlyView.
Radiative cooling controls surface optical properties for solar and thermal radiation, offering solutions for global warming and energy savings. Despite significant advances, key challenges remain: optimizing optical efficiency, maintaining aesthetics, preventing overcooling, enhancing durability, and enabling scalable production.
Chongjia Lin   +8 more
wiley   +1 more source

SIGNAL FLOW GRAPH ANALYSIS METHOD FOR KINEMATIC CHARACTERISTICS OF SINGLE DEGREE OF FREEDOM PLANETARY GEAR TRAIN

open access: yesJixie qiangdu, 2018
Based on features and the principles of department of planetary gear kinematic,this thesis proposes a signal flow graph method to calculate the characteristic parameters of the complex planetary gear transmission system.
ZHOU XinTao   +4 more
doaj  

Misalignment diagnosis of a planetary gearbox based on vibration analysis [PDF]

open access: yes, 2014
As a critical power transmission system, planetary gearbox is widely used in many industrial important machines such as wind turbines, aircraft turbine engines, helicopters.
Abdalla, Gaballa M.   +5 more
core  

Colored Radiative Cooling: from Photonic Approaches to Fluorescent Colors and Beyond

open access: yesAdvanced Materials, EarlyView.
Colored radiative cooling (CRC) has become a prevailing technology for achieving colorful appearance and simultaneously enhancing the effective solar reflectance of cooling coatings. This review presents recent advancements in CRC and its profound impact on energy savings in real‐world applications.
Tao Wang   +5 more
wiley   +1 more source

Effects of Unseen Additional Planetary Perturbers on Compact Extrasolar Planetary Systems [PDF]

open access: yes, 2017
Motivated by the large number of compact extrasolar planetary systems discovered by the Kepler Mission, this paper considers perturbations due to possible additional outer planets. The discovered compact systems sometimes contain multiple transiting planets, so that their orbital angular momentum vectors are tightly aligned.
arxiv   +1 more source

Planetary film reconnaissance system [PDF]

open access: yes
Design, fabrication, assembly of planetary film reconnaissance ...
Bashe, R., Schwartz, I.
core   +1 more source

The scattering of small bodies in planetary systems: constraints on the possible orbits of cometary material

open access: yes, 2011
The scattering of small bodies by planets is an important dynamical process in planetary systems. We present an analytical model to describe this process using the simplifying assumption that each particle's dynamics is dominated by a single planet at a ...
A. Bonsor   +62 more
core   +1 more source

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