Results 81 to 90 of about 12,014 (246)

Membrane‐aided simultaneous reaction–separation for liquid phase products

open access: yesAIChE Journal, EarlyView.
Abstract Conventionally, reaction and separation are conducted as separate steps in liquid‐phase manufacturing, with products formed during reaction and subsequently separated from unreacted reagents, solvents, and byproducts. Integrating these steps into a simultaneous reaction–separation process can improve efficiency and reduce costs.
Yihan Song   +4 more
wiley   +1 more source

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Separation and Valorization of Chlorine From Tail Gas Streams

open access: yesAngewandte Chemie International Edition, EarlyView.
A commercially available ion exchange resin was found to adsorb chlorine gas selectively in the presence of other gases reversibly forming the corresponding trichloride species [IEx][Cl3]. This discovery was telescoped to an efficient process for the recycling and valorization of chlorine from industrially abundant tail gas streams to base chemicals ...
Gesa H. Dreyhsig   +5 more
wiley   +1 more source

Intercomparison of Total Column Ozone Between Ozonesonde Observations and Multi-source Products Across 4 Regions

open access: yes应用气象学报
The intercomparison of vertically integrated total ozone columns (Ωo) derived from 212 CYT-1 ozonesonde observations is conducted at 4 representative Chinese sites: Altay (Xinjiang, 47.7°N), Nenjiang (Heilongjiang, 49.1°N), Shanghai (31.4°N), and Sanya ...
Zhu Langfeng   +5 more
doaj   +1 more source

Variability of total column ozone over Nigeria

open access: yesAIP Conference Proceedings, 2023
Aderonke A. Obafaye   +3 more
openaire   +1 more source

Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment

open access: yesAdvanced Physics Research, EarlyView.
Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck   +9 more
wiley   +1 more source

An operational method for forecasting total column ozone for Punta Arenas, Chile

open access: yesMeteorological Applications, 2002
AbstractOwing to the decrease of stratospheric ozone during the southern spring (starting in September), the city of Punta Arenas (53.1°S, 70.9°W) and its surroundings are exposed to a high incidence of ultra‐violet‐B (UV‐B) radiation during this period. Ozone denatures DNA, and prolonged exposure may cause skin carcinoma and cataracts.
McMahon, RM   +3 more
openaire   +3 more sources

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Long-Term Evolution of the Ozone Layer Under CMIP7 Scenarios

open access: yesAtmosphere
Recovery of the stratospheric ozone layer following the ban on ozone-depleting substances represents one of the most successful examples of international environmental policy.
Margarita A. Tkachenko   +1 more
doaj   +1 more source

Spatial variation of total column ozone on a global scale

open access: yesThe Annals of Applied Statistics, 2007
The spatial dependence of total column ozone varies strongly with latitude, so that homogeneous models (invariant to all rotations) are clearly unsuitable. However, an assumption of axial symmetry, which means that the process model is invariant to rotations about the Earth's axis, is much more plausible and considerably simplifies the modeling.
openaire   +3 more sources

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