Results 11 to 20 of about 315,240 (265)

YOUNG’S MODULUS OF A CARBON-REINFORCED COMPOSITE AT AN ELEVATED TEMPERATURE

open access: yesTechnologia i Automatyzacja Montażu, 2021
Aviation structures are operated under varying environmental conditions, affecting the properties of polymer composites, which are often used to manufacture components for airplanes and helicopters.
Robert Szczepaniak   +7 more
doaj   +1 more source

Improvement of thermal stability of Ta-N film in Cu metallization by a Zr-Si interlayer [PDF]

open access: yesE3S Web of Conferences, 2021
Ta-N (10 nm)/Zr (20 nm) film was grown on n-type (100) silicon wafer at various substrate temperatures in a rf magnetron sputtering system, followed by in situ deposition of Cu.
Zhai Yannan   +4 more
doaj   +1 more source

EnSite NavX mapping system guided implantation of a dual-chamber permanent pacemaker in a 41-year-old pregnant woman with a 4-year follow-up

open access: yesBMC Cardiovascular Disorders, 2022
Background X-ray fluoroscopy has been the primary cardiac imaging modality in permanent pacemaker implantation (PPI) operations, but it inevitably results in radiation exposure for both operators and patients. Fluoroscopy is considered a contraindication,
Peng Wang   +8 more
doaj   +1 more source

Cathodal Transcranial Direct Current Stimulation Over the Right Temporoparietal Junction Suppresses Its Functional Connectivity and Reduces Contralateral Spatial and Temporal Perception

open access: yesFrontiers in Neuroscience, 2021
The temporoparietal junction plays key roles in vestibular function, motor-sensory ability, and attitude stability. Conventional approaches to studying the temporoparietal junction have drawbacks, and previous studies have focused on self-motion rather ...
Guo Dalong   +6 more
doaj   +1 more source

PSO-Markov residual correction method based on Verhulst-Fourier prediction model

open access: yesSystems Science & Control Engineering, 2021
Macroeconomic predicting is a research hotspot in the field of predicting. The accuracy of predicting often directly affects the rationality of decision-making, especially for defense expenditure predicting.
Tong Niu   +5 more
doaj   +1 more source

Accurate prediction by AlphaFold2 for ligand binding in a reductive dehalogenase and implications for PFAS (per- and polyfluoroalkyl substance) biodegradation

open access: yesScientific Reports, 2023
Despite the success of AlphaFold2 (AF2), it is unclear how AF2 models accommodate for ligand binding. Here, we start with a protein sequence from Acidimicrobiaceae TMED77 (T7RdhA) with potential for catalyzing the degradation of per- and polyfluoroalkyl ...
Hao-Bo Guo   +12 more
doaj   +1 more source

Directional microwave emission from femtosecond-laser illuminated linear arrays of superconducting rings

open access: yesScientific Reports, 2023
We examine the electromagnetic emission from two photo-illuminated linear arrays composed of inductively charged superconducting ring elements. The arrays are illuminated by an ultrafast infrared laser that triggers microwave broadband emission detected ...
Thomas J. Bullard   +9 more
doaj   +1 more source

Subcritical crack growth models for SiC fiber in air and steam: Low temperature data and possible effects of residual stress

open access: yesOpen Ceramics, 2023
Failure times (tf) and brittle creep strain rates (ἑ) for static fatigue of Hi-Nicalon™-S fiber tows were measured at 500 and 600 °C. These measurements added to those done previously at 700–1100 °C.
Randall S. Hay   +10 more
doaj   +1 more source

The Influence of the Manufacturing Method on the Mechanical Properties of the Honeycomb Core Sandwich Composite

open access: yesTechnologia i Automatyzacja Montażu, 2022
Reducing weight and fuel consumption is one of the main goals of modern aeronautical engineering. The most common materials to achieve this goal are composite layered materials, including the sandwich ones.
Jacek Janiszewski   +4 more
doaj   +1 more source

From Kirtland Air Force Base

open access: yesIssues in Science and Technology Librarianship, 1992
Five of the largest technical and educational libraries in New Mexico signed an agreement on January 27, 1992, pledging to share their resources.
New Mexico From Kirtland Air Force Base
doaj   +1 more source

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