Results 91 to 100 of about 165,879 (285)

Less-conventional low-consumption galvanic separated MOSFET-IGBT gate drive supply [PDF]

open access: yes, 2017
A simple half-bridge, galvanic separated power supply which can be short circuit proof is proposed for gate driver local supplies. The supply is made while hacking a common mode type filter as a transformer, as the transformer shows a good insulation, it
Bikorimana, Jean Marie Vianney   +1 more
core   +3 more sources

Rapid Sintering of Porous Organic Polymer Powders Into Mechanically Strong Monoliths for Efficient CO2 Capture

open access: yesAdvanced Functional Materials, EarlyView.
Spark plasma sintering enables rapid processing of porous organic polymer (POP) from fine powders to a freestanding and mechanically robust monolith. The sintering process retains the CO2 adsorption capacity and CO2/N2 selectivity, making the monolith more suitable as a solid sorbent for practical carbon capture applications.
Duan Li   +4 more
wiley   +1 more source

Verification tests of durable TPS concepts [PDF]

open access: yes
Titanium multiwall, superalloy honeycomb, and Advanced Carbon-carbon (ACC) multipost Thermal Protection System (TPS) concepts are being developed to provide durable protection for surfaces of future space transportation systems.
Pittman, C. M.   +2 more
core   +1 more source

Light‐Responsive Enzyme‐Loaded Nanoparticles for Tunable Adhesion and Mechanical Wound Contraction

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a photoactivatable enzyme‐loaded mesoporous nanoparticle system (MPDA_PaTy) that enables light‐triggered tunable tissue adhesion and facilitates mechanical wound contraction. Controlled enzymatic crosslinking at tissue or hydrogel interfaces allows on‐demand adhesion.
Junghyeon Ko   +10 more
wiley   +1 more source

Calculating Method of Vibroisolation Efficiency of Single and Multi-Layer Enclosures in Solid Elastic Medium

open access: yesМеханика машин, механизмов и материалов, 2009
The study of the estimation of the vibration protection in the form of thin plates in the solid elastic medium has been carried out. The procedure of the determination of the soundproofing of the enclosing constructions due to reflection and dissipation ...
Yu.V. Vasilevich , V.V. Neumerzhytskii
doaj  

Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment [PDF]

open access: yes, 2018
RUIZ-JARAMILLO, J. y GARCÍA-PULIDO, L.J., 2018. Guarding the border: watchtowers of the Nasrid Kingdom of Granada. Characterization and vulnerability assessment. Heritage 2018: 6th International Conference on Heritage and Sustainable Development. Granada:
García-Pulido, Luis José   +1 more
core  

Tailoring the Properties of Functional Materials With N‐Oxides

open access: yesAdvanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich   +5 more
wiley   +1 more source

Resonance testing of space shuttle thermoacoustic structural specimen [PDF]

open access: yes
The resonance testing of a structural specimen related to the space shuttle vehicle is described. The specimen consisted of a thin aluminum skin reinforced by hat-section stringers and supported by two ribs or bulkheads of corrugated web.
Abrahamson, A. L., Osinski, J.
core   +1 more source

Space shuttle electrical power generation and reactant supply system [PDF]

open access: yes, 1985
The design philosophy and development experience of fuel cell power generation and cryogenic reactant supply systems are reviewed, beginning with the state of technology at the conclusion of the Apollo Program. Technology advancements span a period of 10
Simon, W. E.
core   +1 more source

Development of Vibration Protection Seats for Agricultural Machinery.

open access: yesINDUSTRIAL HEALTH, 1998
Seats have been newly developed with an anti-vibration suspension system for agricultural machinery. These seats were examined in a series of laboratory tests to determine their static and dynamic physical characteristics. These seats are specifically designed for the Japanese physique. An artificial track was constructed to simulate a farm field based
openaire   +3 more sources

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