Results 71 to 80 of about 19,620 (206)

Comparison of different X‐ray‐based scanning electron microscopy methods to detect sub‐nanometre ultra‐thin InAs layers deposited on top of GaAs

open access: yesJournal of Microscopy, EarlyView.
Abstract We compare three different methods of X‐ray analysis in a scanning electron microscope (SEM): energy‐dispersive X‐ray spectroscopy (EDX), wavelength‐dispersive X‐ray spectroscopy (WDX) and micro X‐ray fluorescence (μXRF). These methods are all applied to the same gallium arsenide (GaAs) wafer with a 0.8 nm layer of indium arsenide (InAs) on ...
Thomas Walther   +4 more
wiley   +1 more source

Correlation of plasma osteopontin and neutrophil gelatinase-associated lipocalin levels with the severity and clinical outcome of pelvic inflammatory disease

open access: yesTaiwanese Journal of Obstetrics & Gynecology, 2014
Objective: To investigate the correlation of two important inflammatory biomarkers, plasma osteopontin and neutrophil gelatinase-associated lipocalin (NGAL), with the severity and outcome of pelvic inflammatory disease (PID). Materials and methods: Sixty-
Yi-Torng Tee   +7 more
doaj   +1 more source

Determining bismuth content in GaAsBi alloys by energy‐dispersive X‐ray spectroscopy: A case study with multiple sets of k*‐factors for analytical transmission electron microscopy

open access: yesJournal of Microscopy, EarlyView.
Abstract Measuring the bismuth (Bi) content of ternary gallium arsenide bismuthide (GaAsBi) alloys is important because it sensitively influences their bandgap, and Bi is known to segregate vertically to the surface and sometimes also laterally during growth, so elemental distribution maps need to be quantified.
T. Walther
wiley   +1 more source

Interannual Variations of TOA Albedo over the Arctic, Antarctic and Tibetan Plateau in 2000–2019

open access: yesRemote Sensing, 2020
Recent changes in Earth’s climate system have significantly affected the radiation budget and its year-to-year variations at top of the atmosphere (TOA). Observing high-latitude TOA fluxes is still challenging from space, because spatial inhomogeneity of
Dong L. Wu   +3 more
doaj   +1 more source

Syrinx anatomy and vocalizations in New World vultures (Aves: Cathartidae): Implications for avian vocal evolution

open access: yesJournal of Anatomy, EarlyView.
New World vultures are the only avian clade proposed to lack a syrinx and have been described as non‐vocal. Using dissection, diceCT, and histology, we demonstrate that cathartid vultures have novel syringeal features that form a syrinx and vocal characterization reveals that they produce more complex vocalizations than previously reported.
Bradley A. Ibarra   +3 more
wiley   +1 more source

Model of human body influence on UWB ranging error

open access: yesTongxin xuebao, 2017
Based on UWB channel,in which human body occlusion application scenarios,the influence of human body on TOA range error by measurement and analysis of TOA ranging error was studied.The TOA ranging error model caused by single side of human body through ...
Jie HE   +6 more
doaj   +2 more sources

Measurement and modeling of diffuse ultraviolet radiation: A review

open access: yesPhotochemistry and Photobiology, EarlyView.
Solar UV radiation consists of direct and diffuse UV components. The diffuse component contributes to the exposure received by humans and to the risk of skin cancer and sun‐related eye disorders. This review aims to determine future research directions for the measurement and modeling of diffuse solar UV radiation.
Alfio V. Parisi   +7 more
wiley   +1 more source

IEEE 802.15.4 ZigBee-Based Time-of-Arrival Estimation for Wireless Sensor Networks

open access: yesSensors, 2016
Precise time-of-arrival (TOA) estimation is one of the most important techniques in RF-based positioning systems that use wireless sensor networks (WSNs).
Jeonghyeon Cheon   +3 more
doaj   +1 more source

Sir and Guys in 20th‐ and 21st‐Century American English

open access: yesWorld Englishes, EarlyView.
ABSTRACT This paper examines the diachronic development of formal and informal address and reference terms in American English as an effect of democratization using the COHA corpus (1900–2020). In focus are two address/reference terms with especially drastic frequency trends in the timespan investigated: the honorific sir, which declines sharply from ...
Hanna Bruns, Svenja Kranich
wiley   +1 more source

Resolving Taxonomic Boundaries in the New Zealand Senecio matatini Complex (Senecioneae, Asteraceae): Evidence from Genotyping by Sequencing of Limestone‐Associated Forms

open access: yesNew Zealand Journal of Botany, Volume 64, Issue 3, September 2026.
The Senecio matatini complex in New Zealand has a convoluted taxonomic and nomenclatural history that has not been fully resolved. This is largely due to the incomplete sampling of morphologically diverse but highly threatened limestone populations in the eastern South Island in previous genetic studies.
Samiksha Patel   +3 more
wiley   +1 more source

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