Results 111 to 120 of about 24,680 (295)

Advanced Rotorcraft Transmission (ART) program-Boeing helicopters status report [PDF]

open access: yes
The Advanced Rotorcraft Transmission (ART) program is structured to incorporate key emerging material and component technologies into an advanced rotorcraft transmission with the intention of making significant improvements in the state of the art (SOA).
Lenski, Joseph W., Jr., Valco, Mark J.
core   +1 more source

Dynamic Retinal Pathology in Glaucoma Progression Revealed by High‐Resolution Functional Imaging in Vivo

open access: yesLaser &Photonics Reviews, EarlyView.
In this work, we investigated the dynamic retinal pathology of glaucoma from onset to late stages through longitudinal in vivo high‐resolution imaging in a silicone oil‐induced ocular hypertension (SOHU) glaucoma mouse model. We developed an optimized adaptive optics two‐photon excitation fluorescence microscopy (AO‐TPEFM) technique for morphological ...
Yiming Fu   +6 more
wiley   +1 more source

Determination of Optimal Mix for Acid Reclamation of used Engine Oil

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2018
The effects of varying ratio of used engine oil and sulphuric acid, with kaolin as contacting agent, on reclaimed oil properties was analyzed in this study using response surface methodology. Results revealed optimal used engine oil-acid ratio of 1: 6.3.
B. N. Nwankwojike   +3 more
doaj  

Evaluation of newly copolymers and their montmorillonite nanocomposite as cold flow improver for petroleum lubricating oil. [PDF]

open access: yesSci Rep, 2023
El-Bahnasawi AH   +6 more
europepmc   +1 more source

Bearing fatigue investigation 3 [PDF]

open access: yes
The operating characteristics of large diameter rolling-element bearings in the ultra high speed regimes expected in advanced turbine engines for high performance aircraft were investigated.
Bamberger, E. N.   +2 more
core   +1 more source

Vegetable Oil‐Based Materials for Drug Delivery Systems and Wound Dressings

open access: yesMacromolecular Bioscience, EarlyView.
Renewable resources like vegetable oils are increasingly explored for biomaterial production in biomedical applications. Their monoglycerides and triglycerides inherently possess functions or can be chemically modified to introduce functional groups suitable for polymerization, yielding biomaterials with desirable properties such as flexibility ...
Lucas M. Favre   +2 more
wiley   +1 more source

Advanced gearbox technology [PDF]

open access: yes
An advanced 13,000 HP, counterrotating (CR) gearbox was designed and successfully tested to provide a technology base for future designs of geared propfan propulsion systems for both commercial and military aircraft.
Anderson, N. E.   +3 more
core   +1 more source

Recent Developments in Sustainable Composites for Printed Circuit Boards (PCBs): A Review

open access: yesMacromolecular Materials and Engineering, EarlyView.
This review presents the potential of using natural plant fibers and biodegradable polymers as sustainable printed circuit boards (PCBs). This review provides future directions in innovation and sustainable PCBs development. Bio‐composites PCBs are both environmentally friendly and sustainable due to the natural fibres they contain.
Erdem Selver   +7 more
wiley   +1 more source

Preliminary design of an auxiliary power unit for the space shuttle. Volume 5: Selected system cycle performance data [PDF]

open access: yes
Detailed cycle steady-state performance data are presented for the final auxiliary power unit (APU) system configuration. The selection configuration is a hydrogen-oxygen APU incorporating a recuperator to utilize the exhaust energy and using the cycle ...
Burriss, W. L., Hamilton, M. L.
core   +1 more source

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