Results 81 to 90 of about 8,661,373 (377)
Improving the detection limit for 182Hf [PDF]
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2007 Abstract A nearby supernova would deposit radionuclides on earth. The long-lived radionuclide 182Hf (t1/2 = 8.9 Ma) is one of a number of candidates for an isotopic signature of such an event. Together with 60Fe, observation of 182Hf would be direct evidence for a supernova site of the r-process.
Winkler, Stephan +3 more
openaire +3 more sources
Limit cycle periods in damage detection
Mechanical Systems and Signal Processing, 2022 This paper introduces a damage detection scheme based on changes in the period of limit cycles (LCs) realized by nonlinear output feedback. The parameterized feedback law is selected to make the dynamic equilibrium of the actuated coordinate approximate that of a generalized van der Pol oscillator and potential model-related difficulties are avoided by
Bernal, Dionisio +2 more
openaire +3 more sources
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
Kernel-phases for high-contrast detection beyond the resolution limit
, 2011 The detection of high contrast companions at small angular separation appears feasible in conventional direct images using the self-calibration properties of interferometric observable quantities.
Martinache, Frantz
core +1 more source
Optimal multi-photon phase sensing with a single interference fringe [PDF]
, 2013 Quantum entanglement can help to increase the precision of optical phase measurements beyond the shot noise limit (SNL) to the ultimate Heisenberg limit. However, the N-photon parity measurements required to achieve this optimal sensitivity are extremely
Hofmann, H. F. +2 more
core +2 more sources
A Reduced GO-Graphene Hybrid Gas Sensor for Ultra-Low Concentration Ammonia Detection
Sensors, 2018 A hybrid structure gas sensor of reduced graphene oxide (RGO) decorated graphene (RGO-Gr) is designed for ultra-low concentration ammonia detection. The resistance value of the RGO-Gr hybrid is the indicator of the ammonia concentration and controlled by
Chang Wang +7 more
doaj +1 more source
Reliable and Sensitive Nested PCR for the Detection of Chlamydia in Sputum
Microorganisms, 2021 Chlamydia are Gram-negative, intracellular pathogens colonizing epithelial mucosa. They cause primarily atypical pneumonia and have recently been associated with chronic diseases.
Martina Smolejová +2 more
doaj +1 more source
Graphene‐Based Electronic Immunosensor with Femtomolar Detection Limit in Whole Serum
Advanced Materials & Technologies, 2018 Purely electronic diagnostic devices that are sensitive to biomolecules' intrinsic charge present a very attractive platform for point‐of‐care (PoC) applications, since they can operate under label‐free conditions.
N. Andoy +4 more
semanticscholar +1 more source
Fundamental limits of detection in the far infrared [PDF]
New Astronomy, 2013 We study the fundamental limits of detection for astrophysical observations in the far infrared. Understanding these fundamental limits is critical to the planning and analysis of experiments in this region. We specifically characterize the difficulties associated with observing in the 0.1-10 THz (30-3000 m) regime including extraterrestrial ...
Denny, SP, Suen, JY, Lubin, PM
openaire +5 more sources
FEBS Letters, EarlyView.In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley +1 more source