Results 21 to 30 of about 239,700 (173)

Variability in concentrations of potentially toxic elements in urban parks from six European cities [PDF]

open access: yes, 2006
Use of a harmonised sampling regime has allowed comparison of concentrations of copper, chromium, nickel, lead and zinc in six urban parks located in different European cities differing markedly in their climate and industrial history.
Ajmone-Marsanb, F.   +15 more
core   +2 more sources

Vector mixed-gap surface solitons [PDF]

open access: yes, 2006
We elucidate the properties of mixed-gap vector surface solitons supported by the interface between a uniform medium and an optical lattice imprinted in a Kerr-type nonlinear media.
Kartashov, Yaroslav V.   +2 more
core   +2 more sources

Assessment of the Adverse Health Effects of Aflatoxin Exposure from Unpackaged Peanut Oil in Guangdong, China

open access: yesToxins, 2023
Aflatoxins are liver carcinogens and are common contaminants in unpackaged peanut (UPP) oil. However, the health risks associated with consuming aflatoxins in UPP oil remain unclear.
Zhini He   +15 more
doaj   +1 more source

Cosmic Needles versus Cosmic Microwave Background Radiation [PDF]

open access: yes, 2002
It has been suggested by a number of authors that the 2.7K cosmic microwave background (CMB) radiation might have arisen from the radiation from Population III objects thermalized by conducting cosmic graphite/iron needle-shaped dust.
Aguirre A. N.   +16 more
core   +2 more sources

Improve Pregnancy Risk Detection and Preparation With Websites and Booklet

open access: yesLINK
The Maternal Mortality Rate is one of the indicators to assess the degree of public health, because of its sensitivity to improving health services, both in terms of accessibility and quality.
Heny Rosiana, Rozikhan, Sayidah
doaj   +1 more source

Ultra-large alignments using Phylogeny-aware Profiles

open access: yes, 2015
Many biological questions, including the estimation of deep evolutionary histories and the detection of remote homology between protein sequences, rely upon multiple sequence alignments (MSAs) and phylogenetic trees of large datasets.
Kumar, Keerthana   +3 more
core   +1 more source

Antitrust analysis with upward pricing pressure and cost efficiencies.

open access: yesPLoS ONE, 2020
We investigate the accuracy of UPP as a tool in antitrust analysis when there are cost efficiencies from a horizontal merger. We include merger-specific cost efficiencies in a tractable manner in the model and extend the standard UPP formulation to ...
Jéssica Dutra, Tarun Sabarwal
doaj   +1 more source

Vertical pairing of identical particles suspended in the plasma sheath

open access: yes, 2001
It is shown experimentally that vertical pairing of two identical microspheres suspended in the sheath of a radio-frequency (rf) discharge at low gas pressures (a few Pa), appears at a well defined instability threshold of the rf power. The transition is
A. Homann   +20 more
core   +1 more source

Perturbations of Ubiquitin-Proteasome-Mediated Proteolysis in Aging and Alzheimer’s Disease

open access: yesFrontiers in Aging Neuroscience, 2019
The ubiquitin-proteasome pathway (UPP) has multiple roles in the normal nervous system, including the development of synaptic connections and synaptic plasticity.
Ashok N. Hegde   +4 more
doaj   +1 more source

Tes Prosidin Semnas UPP

open access: yes, 2021
Seminar Nasional Universitas PGRI Palangka ...
openaire   +2 more sources

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