Results 31 to 40 of about 911,075 (316)

Bridging the spatial gaps of the Ammonia Monitoring Network using satellite ammonia measurements [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Ammonia (NH3) is a key precursor to fine particulate matter (PM2.5) and a primary form of reactive nitrogen. The limited number of NH3 observations hinders the further understanding of its impacts on air quality, climate, and biodiversity. Currently, NH3
R. Wang   +13 more
doaj   +1 more source

Completions of ε-Dense Partial Latin Squares [PDF]

open access: yes, 2013
A classical question in combinatorics is the following: given a partial Latin square $P$, when can we complete $P$ to a Latin square $L$? In this paper, we investigate the class of textbf{$epsilon$-dense partial Latin squares}: partial Latin squares in
Bartlett, Padraic James   +2 more
core   +1 more source

The Square [PDF]

open access: yesNexus Network Journal, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Ecological and biological indicators of the genus Quercus L. representatives in green plantations of Kryvyi Rih

open access: yesІнтродукція Рослин, 2018
Objective – to study basic biometrical, ecological and biological characteristics of the genus Quercus L. representatives in green plantations of Kryvyi Rih and in the arboretum of Kryvyi Rih Botanical Garden of the NAS of Uk raine.
O.V. Lapteva
doaj   +1 more source

Oxidation of low-molecular-weight organic compounds in cloud droplets: global impact on tropospheric oxidants [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
In liquid cloud droplets, superoxide anion (O2(aq)-) is known to quickly consume ozone (O3(aq)), which is relatively insoluble. The significance of this reaction as a tropospheric O3 sink is sensitive to the abundance of O2(aq)- and therefore to the ...
S. Rosanka   +5 more
doaj   +1 more source

On squares of squares [PDF]

open access: yesActa Arithmetica, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Distribution of urban green spaces: Comparative analysis between cities in different countries

open access: yesOrnamental Horticulture, 2020
The presence of urban green spaces (UGS) increases the human’s contact with nature and provides numerous benefits to the society and the local environment.
Cecília Souza Gontijo Garcia   +3 more
doaj   +1 more source

Global, regional and national trends of atmospheric ammonia derived from a decadal (2008–2018) satellite record

open access: yesEnvironmental Research Letters, 2021
Excess atmospheric ammonia (NH _3 ) leads to deleterious effects on biodiversity, ecosystems, air quality and health, and it is therefore essential to monitor its budget and temporal evolution.
Martin Van Damme   +11 more
doaj   +1 more source

Irreducibility of tensor squares, symmetric squares and alternating squares [PDF]

open access: yesPacific Journal of Mathematics, 2002
The authors investigate the question when the tensor square, the alternating square, or the symmetric square of an absolutely irreducible projective representation \(V\) of an almost simple group \(G\) is again irreducible. The information about such representations can be used in the study of the maximal subgroups of simple classical groups of Lie ...
Magaard, Kay   +2 more
openaire   +2 more sources

10-year satellite-constrained fluxes of ammonia improve performance of chemistry transport models [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
In recent years, ammonia emissions have been continuously increasing, being almost 4 times higher than in the 20th century. Although an important species, as its use as a fertilizer sustains human living, ammonia has major consequences for both humans ...
N. Evangeliou   +9 more
doaj   +1 more source

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