Results 121 to 130 of about 30,626 (294)
Spacelab contamination assessment. Payload/orbiter contamination control requirement study [PDF]
The activities and the results obtained under the payload/orbiter contamination control requirement study were documented, and the integrated shuttle payload contamination evaluation computer model was developed.
Bareiss, L. E. +2 more
core +1 more source
Does attachment removal damage enamel? Influence of adhesive, resin, and bur on surface integrity. [PDF]
Eur J Oral SciAbstract To evaluate the combination of composites, adhesive systems, and burs considering artificial accelerated aging (AAA), influence enamel roughness and morphology after attachment removal. One hundred ninety‐two bovine enamel specimens were divided according to composite type (Transbond XT, flowable, bulk‐fill flowable), adhesive system (Single ...
Canadas MDB, Sousa ABS, Panzeri FC.
europepmc +2 more sources
Journal of Field Robotics, EarlyView.ABSTRACT Early detection of breast abnormalities remains challenging: manual palpation is subjective and operator‐dependent, while imaging modalities may miss small or subtle stiffness anomalies. This paper presents a biomimetic multifinger robotic palpation approach intended to support early breast‐cancer screening and follow‐up assessment as a proof ...
Kai Cheng +7 more
wiley +1 more source
Six-man, self-contained carbon dioxide concentrator subsystem for Space Station Prototype (SSP) application [PDF]
A six man, self contained, electrochemical carbon dioxide concentrating subsystem for space station prototype use was successfully designed, fabricated, and tested.
Hallick, T. M. +4 more
core +1 more source
Small, EarlyView.This review critically compares the electrochemical performance of carbon‐based and alloy‐type anodes for sodium‐ion batteries, with an emphasis on strategies that enhance practical deployment. It highlights how synergistic optimization of microstructure, electrolyte, and presodiation improves hard carbon, while nanostructuring and interfacial ...
Anele Tshaka +3 more
wiley +1 more source
CrystalsSilicon nitride (Si3N4) possesses excellent mechanical properties and high thermal conductivity, which is an important feature in many applications. However, achieving the theoretically high thermal conductivity of Si3N4 in practice is challenging.
Hongfei Shao +4 more
doaj +1 more source
Nonmetallic materials list ultraviolet spectrometer experiment (S-169) [PDF]
The final nonmetallic materials summary for the Apollo ultraviolet spectrometer experiment lists manufacture and material specifications, handling and processing criteria, quality test data and approved status as well as curing ...
core +1 more source
Small, EarlyView.A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh +7 more
wiley +1 more source
Small, EarlyView.Atomic‐scale copper clusters anchored on π‐extended poly(heptazine imide) enable selective, sacrificial‐agent‐free solar conversion of carbon dioxide (CO2) to ethanol. The catalyst promotes interfacial charge separation and stabilizes key carbon‐carbon coupling intermediates, providing a molecularly defined platform for direct C2 fuel synthesis under ...
Muhammad Zaeem Azam Khan +12 more
wiley +1 more source
steel research international, EarlyView.Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava +7 more
wiley +1 more source