Results 61 to 70 of about 1,338,115 (406)

The Three-Dimensional Structure of Cassiopeia A [PDF]

open access: yes, 2010
We used the Spitzer Space Telescope's Infrared Spectrograph to map nearly the entire extent of Cassiopeia A between 5-40 micron. Using infrared and Chandra X-ray Doppler velocity measurements, along with the locations of optical ejecta beyond the forward shock, we constructed a 3-D model of the remnant.
arxiv   +1 more source

Analisa Peningkatan Sifat Mekanik Material Ring Piston Top Kompresi Yamaha Jupiter Z Dengan Proses Heat Treatment [PDF]

open access: yes, 2013
Terdapat dua produk suku cadang ring piston di pasaran, yaitu ring piston produk keluaran pabrikan resmi (genuine parts) dan ring piston barang kualitas menyerupai barang pabrik resmi disebut kualitas 1 disingkat KW 1.
Krisdianto, H. E. (Herawan)   +2 more
core  

Optimising the design of a piston-ring pack using DoE methods [PDF]

open access: yes, 2011
This paper shows how design of experiments can be used with a ring-pack simulation program to optimise the design of a piston-ring assembly. Ten factors are varied—six describing the ring profile, three ring tensions, and the lubricant viscosity ...
Smith, Edward H
core   +1 more source

Direct Ink Writing of Conductive Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
This review examines the use of direct ink writing (DIW) for fabricating conductive hydrogels with customizable 3D structures. It outlines the rheological requirements for successful DIW, followed by an exploration of the materials and ink formulations used to impart electronic and/or ionic conductivity to hydrogels while maintaining printability ...
Monica Ho   +6 more
wiley   +1 more source

Vortex rings from notched nozzles [PDF]

open access: yes, 2017
The formation of a vortex ring from a piston/nozzle apparatus depends on the nozzle exit's shape. Here we study the formation mechanism and the evolution of asymmetrical rings from notched nozzles using direct numerical simulations. Three types of nozzle are used: i) V-notched; ii) A-notched and iii)W-notched nozzles.
arxiv   +1 more source

Development of a Novel, All‐Aromatic High Tensile Modulus Liquid Crystalline Polyimide for Fused Filament Fabrication Applications

open access: yesAdvanced Functional Materials, EarlyView.
A novel, high tensile modulus, fully aromatic thermotropic liquid crystalline polyimide (LCPI) with better solvent resistance and thermal stability is synthesized. Tensile specimens are fabricated using both injection molding and FFF processes, accomplished via lower viscosity enabled by the LC phase.
Zhenning Yu   +6 more
wiley   +1 more source

Large-scale superfluid vortex rings at nonzero temperatures [PDF]

open access: yes, 2014
We numerically model experiments in which large-scale vortex rings - bundles of quantized vortex loops - are created in superfluid helium by a piston-cylinder arrangement. We show that the presence of a normal fluid vortex ring together with the quantized vortices is essential to explain the coherence of these large-scale vortex structures at nonzero ...
arxiv   +1 more source

PERANCANGAN ULANG PISTON MOBIL TOYOTA HARDTOP 6 SILINDER BAHAN BAKAR BENSIN 4200 CC [PDF]

open access: yes, 2008
Piston represent important component in motor burn of where motor burnheating power become mechanic energy by way of combustion of fuel. Whenheating power for combustion to become activator tanaga yielded outside from machine referred motor burn outside ...
Ardiyan, Dhani
core  

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Fullerene Oil Tribology in Compression Piston Rings under Thermal Considerations

open access: yesLubricants, 2023
To enhance the efficiency of automotive engines, a comprehensive understanding of friction generation within their components is paramount. Moreover, extensive global research efforts have been dedicated to nanoparticles, leading to the emergence of ...
Elias Tsakiridis   +1 more
doaj   +1 more source

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