Results 61 to 70 of about 172,373 (295)
Inconclusive decisions and error rates in forensic science
Forensic Science International: SynergyIn recent years, there has been discussion and controversy relating to the treatment of inconclusive decisions in forensic feature comparison disciplines when considering the reliability of examination methods and results.
H. Swofford +8 more
doaj +1 more source
IEEE Access, 2019 We demonstrate a Rydberg atom-based sensor embedded in a parallel-plate waveguide (PPWG) for amplitude and phase detection of a radio-frequency (RF) electric field. This embedded atomic sensor is also capable of receiving modulated communications signals.
Matthew T. Simons +4 more
doaj +1 more source
Length and dimensional measurements at NIST
Journal of Research of the National Institute of Standards and Technology, 2001 This paper discusses the past, present, and future of length and dimensional measurements at NIST. It covers the evolution of the SI unit of length through its three definitions and the evolution of NBS-NIST dimensional measurement from early linescales and gage blocks to a future of atom-based dimensional standards.
openaire +2 more sources
Advanced Science, EarlyView.A reconfigurable physical unclonable function is developed using CMOS‐integrated SOT‐MRAM chips, leveraging a dual‐pulse strategy and offering enhanced environmental robustness. A temperature‐compensation effect arising from the CMOS transistor and SOT‐MTJ is revealed and established as a key prerequisite for thermal resilience.
Min Wang +7 more
wiley +1 more source
Characterization of Power-to-Phase Conversion in High-Speed P-I-N Photodiodes
IEEE Photonics Journal, 2011 Fluctuations of the optical power incident on a photodiode can be converted into phase fluctuations of the resulting electronic signal due to nonlinear saturation in the semiconductor.
J. Taylor +6 more
doaj +1 more source
Microbial Odorant Detection Guides Drosophila Parasitoids Seeking Hosts in Fermenting Fruits
Advanced Science, EarlyView.Yeast microbes in fermenting fruits attract both host flies and their parasitoid wasps. Female Leptopilina boulardi detect yeast‐emitted ethyl esters via two olfactory receptors, LbouOR167 and LbouOR136. A conserved residue, Leu159, is critical for binding these compounds, enabling female wasps to locate host‐rich habitats.
Yueqi Lu +11 more
wiley +1 more source
Advanced Science, EarlyView.Engineered extracellular vesicles displaying Ephrin‐B2 selectively target Ephrin‐B4–expressing ovarian cancer cells, enabling precise delivery in patient‐derived models. This scalable bio‐manufacturing platform reveals a versatile strategy to exploit Ephrin signaling for highly specific therapeutic payload delivery and motivates exploration of tailored
Nihar Godbole +17 more
wiley +1 more source
A close-up of a yellowish marble from Coimbra, Portugal, part of the NIST stone wall
, 2017 This is an image of fine-grained yellowish marble from Coimbra, Portugal. The stone is part of the NIST stone wall, which was built using 2,352 stones from 47 US states and 320 from 16 foreign countries. The wall is approximately 12 m long, 4 m high, 0.6
National Institute of Standards and Technology and Technology
core +1 more source
A mathematical framework to correct for compositionality in microbiome data sets
Applied and Environmental MicrobiologyThe increasing use of metagenomic sequencing (MGS) for microbiome analysis has significantly advanced our understanding of microbial communities and their roles in various biological processes, including human health, environmental cycling, and disease ...
Samuel P. Forry +5 more
doaj +1 more source
Collective atomic scattering and motional effects in a dense coherent medium
Nature Communications, 2016 Light scattering from a dense coherent medium is determined by the interplay of dispersive and radiative dipole–dipole interactions. Here, the authors control the motional effects that obscure the coherence of scattered light and study collective ...
S. L. Bromley +11 more
doaj +1 more source