Results 41 to 50 of about 169,469 (279)

On testing laser ablation processes for asteroid deflection [PDF]

open access: yes, 2011
Laser surface ablation has been theoretically demonstrated to be an advantageous method in the potential mitigation and deflection of Near Earth Asteroids.
Burns, David   +3 more
core   +3 more sources

Consequences of asteroid fragmentation during impact hazard mitigation [PDF]

open access: yes, 2010
The consequences of the fragmentation of an Earth-threatening asteroid due to an attempted deflection are examined in this paper. The minimum required energy for a successful impulsive deflection of a threatening object is computed and compared to the ...
Vasile, M.   +2 more
core   +4 more sources

Study on flexural behaviour of printed concrete wide beams using polypropylene fibres

open access: yesVietnam Journal of Science, Technology and Engineering, 2023
Sustainability in building construction is an inevitable aspect of future construction projects. The justification of sustainability is highly appreciated by comparing 3D concrete printing technology with conventional construction.
Thi Loan Pham   +4 more
doaj  

Theoretical Investigations for the Verification of Shear Centre and Deflection of Sigma Section by Back Propagation Neural Network Using Python

open access: yesArchives of Civil Engineering, 2019
The most important challenges in the construction field is to do the experimentation of the designing at real time. It leads to the wastage of the materials and time consuming process.
Janani S., Thenmozhi R., Jayagopal L.S.
doaj   +1 more source

Determination of diametral error using finite elements and experimental method [PDF]

open access: yesMetalurgija, 2010
This study concerns experimental and numerical analysis on a one-sided bound workpiece on the lathe machine. Cutting force creates deflection on workpiece while turning process is on. Deflection quantity is estimated utilizing Laser Distance Sensor (LDS)
A. Karabulut
doaj  

High Aspect Ratio Thin-Walled Structures in D2 Steel through Wire Electric Discharge Machining (EDM)

open access: yesMicromachines, 2020
Thin structures are often required for several engineering applications. Although thick sections are relatively easy to produce, the cutting of thin sections poses greater challenges, particularly in the case of thermal machining processes.
Naveed Ahmed   +5 more
doaj   +1 more source

Light-touch2 : a laser-based solution for the deflection, manipulation and exploitation of small asteroids [PDF]

open access: yes, 2013
This paper presents the preliminary mission and system analysis of a small-scale, light-weight system for the deflection, manipulation and exploitation of small size asteroids. The system proposed in this paper, called Light-Touch2, uses lasers to ablate
Wayman, Alastair   +11 more
core   +3 more sources

Numerical Simulation of Aerodynamic Characteristics of Trailing Edge Flaps for FFA-W3-241 Wind Turbine Airfoil

open access: yesMachines
The blades of wind turbines constitute key components for converting wind energy into electrical energy, and modifications to blade airfoil geometry can effectively enhance aerodynamic performance of wind turbine.
Jiaxin Xu   +5 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

Efficient nonresonant dipole force on molecules by a tightly focused laser

open access: yesFrontiers in Physics, 2014
When a molecule is placed in a nonresonant laser field, the Stark interactions between the laser field and the induced molecular dipole result in a mechanical force on the molecule.
Xing Nan eSun   +3 more
doaj   +1 more source

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