Results 61 to 70 of about 53,940 (197)

On the use of a satellite remote-sensing-based approach for determining aerosol direct radiative effect over land: a case study over China [PDF]

Atmospheric Chemistry and Physics, 2015
A satellite-based approach to derive the aerosol direct shortwave (SW) radiative effect (ADRE) was studied in an environment with highly variable aerosol conditions over eastern China from March to October 2009. The method is based on using coincident SW
A.-M. Sundström, A. Arola, P. Kolmonen, Y. Xue, G. de Leeuw, M. Kulmala   +5 more
doaj   +1 more source

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

Journal 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, Stuart Creasey‐Gray, Stephan Boehm, Heath Young, Yang Yang   +4 more
wiley   +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

Journal 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

Increase of the coordinate measurement accuracy in the multi-static radar in case of the receiving position placement on the aerial vehicle

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The dependence of the accuracy of the object's coordinates estimation on the relative position of transmitting and receiving points of the multi-position radar system was studied.
V. V. Legkostup, V. E. Markevich
doaj  

Mutation Trajectory of Omicron SARS-CoV-2 Virus, Measured by Principal Component Analysis

COVID
Since 2019, the SARS-CoV-2 virus has caused a global pandemic, resulting in widespread infections and ongoing mutations. Analyzing these mutations is essential for predicting future impacts.
Tomokazu Konishi, Toa Takahashi
doaj   +1 more source

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

Journal 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, Carmen A. Urban, Lucas J. Legendre, Julia A. Clarke   +3 more
wiley   +1 more source

Evaluation of self‐collected nasal, urine, and saliva samples for molecular detection of SARS‐CoV‐2 using an EUA approved RT‐PCR assay and a laboratory developed LAMP SARS‐CoV‐2 test

Immunity, Inflammation and Disease
As the SARS‐CoV‐2 virus spread throughout the world, millions of positive cases of COVID‐19 were registered and, even though there are millions of people already vaccinated against SARS‐CoV‐2, a large part of the global population remains vulnerable to ...
Ana Purcell‐Wiltz, Fernando Tadeu Zamuner, Karem Caraballo, Lorena De Jesus, Yaima Miranda, Denise Ortiz, Amanda García Negrón, Andrea Cortés Ortiz, Adriana Baez, Josefina Romaguera, Ivonne Jiménez, Alberto Ortiz, Jorge Acevedo, Liliana Viera, David Sidransky, Rafael Guerrero‐Preston   +15 more
doaj   +1 more source

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

World 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

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

Taiwanese 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, Po-Hui Wang, Shun-Fa Yang, Hsiu-Ting Tsai, Shu-Kuei Lee, Jiunn-Liang Ko, Long-Yau Lin, Shiuan-Chih Chen   +7 more
doaj   +1 more source

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

Remote 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, Jae Nyung Lee, Kyu-Myong Kim, Young-Kwon Lim   +3 more
doaj   +1 more source