Results 1 to 10 of about 10,175,510 (387)
Optically referenced 300 GHz millimetre-wave oscillator [PDF]
Nature Photonics, 2021 Optical frequency division (OFD) via optical frequency combs (OFC) has enabled a leap in microwave metrology leading to noise performance never explored before.
T. Tetsumoto +5 more
semanticscholar +2 more sources
Urban land expansion: the role of population and economic growth for 300+ cities
npj Urban Sustainability, 2022 Global urban populations are projected to increase by 2.5 billion over the next 30 years. Yet, there is limited understanding of how this growth will affect urban land expansion (ULE).
Richa Mahtta +6 more
semanticscholar +1 more source
Journal of Forest Research, 2022 The important contributions of urban trees and green spaces to for example, climate moderation and public health have been recognized. This paper discusses guidelines and norms that promote the benefits of viewing green, living amongst green, and having ...
C. Konijnendijk
semanticscholar +1 more source
Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz).
Health Physics, 2020 Radiofrequency electromagnetic fields (EMFs) are used to enable a number of modern devices, including mobile telecommunications infrastructure and phones, Wi-Fi, and Bluetooth. As radiofrequency EMFs at sufficiently high power levels can adversely affect
semanticscholar +1 more source
NGC 300 ULX1: A new ULX pulsar in NGC 300 [PDF]
Proceedings of the International Astronomical Union, 2018 Abstract. NGC 300 ULX1 is the fourth to be discovered in the class of the ultra-luminous X-ray pulsars. Pulsations from NGC 300 ULX1 were discovered during simultaneous XMM-Newton / NuSTAR observations in Dec. 2016. The period decreased from 31.71 s to 31.54 s within a few days, with a spin-up rate of –5.56×10–7 s s–1, likely one of the largest ever ...
Chandreyee Maitra +3 more
openaire +4 more sources
SMITH AT 300: THE DIGNITY OF TRADE
Journal of the History of Economic Thought, 2023 “It is not from the benevolence of the butcher, the brewer, or the baker, that we expect our dinner, but from their regard to their own interest. We address ourselves, not to their humanity but to their self-love, and never talk to them of our necessities but of their advantages.”WN I.ii ...
JHET Assistant, Maria Pia Paganelli
openaire +1 more source
Remote Sensing, 2020 The Copernicus Global Land Service (CGLS) provides global time series of leaf area index (LAI), fraction of absorbed photosynthetically active radiation (fAPAR) and fraction of vegetation cover (fCOVER) data at a resolution of 300 m and a frequency of 10
Beatriz Fuster +8 more
semanticscholar +1 more source
Orbital contribution to the magnetic properties of nanowires: Is the orbital polarization ansatz justified? [PDF]
, 2006 We show that considerable orbital magnetic moments and magneto-crystalline anisotropy energies are obtained for a Fe monatomic wire described in a tight-binding method with intra-atomic electronic interactions treated in a full Hartree Fock (HF ...
(UA +19 more
core +5 more sources
Intermolecular interactions in the chiral and racemic forms of 3-hydroxy-2-(1-oxoisoindolin-2-yl)butanoic acid derived from threonine [PDF]
, 2000 The title compounds, C₁₂H₁₃NO₄, are derived from L-threonine and DL-threonine, respectively. Hydrogen bonding in the chiral derivative, (2S/3R)-3-hydroxy-2-(1-oxoisoindolin-2-yl)butanoic acid, consists of O-Hacid...Oalkyl-H...O=Cindole chains [O...O 2 ...
Brady, Fiona +2 more
core +1 more source
Crossing the race divide : interracial sex in antebellum Savannah [PDF]
, 2008 This article explores the social significance of inter-racial sexual contact in an antebellum Southern city. How did inter-racial sex challenge the established social hierarchy in Savannah?
Clinton Catherine +3 more
core +1 more source