Results 11 to 20 of about 10,786,653 (337)
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
The evaluation of the 3-30-300 green space rule and mental health.
Environmental Research, 2022 BACKGROUND AND AIMS Urban green space has many health benefits, but it is still unclear how much actually is needed for better health. Recently a new 3-30-300 rule of thumb for urban forestry and urban greening has been proposed, but this rule has not ...
M. Nieuwenhuijsen +7 more
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
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 +6 more sources
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
Optical annular resonators based on radial Bragg and photonic crystal reflectors [PDF]
, 2003 A ring resonator based on Bragg reflection is studied in detail. Closed form expressions for the field and dispersion curves for radial Bragg gratings and photonic crystals based resonators are derived and compared to FDTD simulations.
Scheuer, Jacob, Yariv, Amnon
core +1 more source
The Simons Genome Diversity Project: 300 genomes from 142 diverse populations
Nature, 2016 Here we report the Simons Genome Diversity Project data set: high quality genomes from 300 individuals from 142 diverse populations. These genomes include at least 5.8 million base pairs that are not present in the human reference genome.
Swapan Mallick +107 more
semanticscholar +1 more source
Electricity Diffusion and Trend Acceleration in Inter-War Manufacturing Productivity [PDF]
, 2004 This paper evaluates the link between the diffusion of electricity and the increase in labour productivity growth in the manufacturing sector during the inter-war period.
Ristuccia, Cristiano A. +1 more
core +1 more source