Results 1 to 10 of about 3,868 (229)

Revisiting the tropical Atlantic western boundary circulation from a 25-year time series of satellite altimetry data [PDF]

open access: yesOcean Science, 2023
Geostrophic currents derived from altimetry are used to investigate the surface circulation in the western tropical Atlantic over the 1993–2017 period.
D. M. Dimoune   +7 more
doaj   +1 more source

A Review of Wettability Alteration by Spontaneous Imbibition Using Low-Salinity Water in Naturally Fractured Reservoirs

open access: yesEnergies, 2023
Analysis of fluid flow in naturally fractured reservoirs (NFRs), as a highly heterogeneous and complex system, requires a detailed study of the fracture-matrix interactions.
Marzhan Karimova   +3 more
doaj   +1 more source

Review of High-Speed Countercurrent Chromatography in Separation of Lanthanides and Actinides

open access: yesHe huaxue yu fangshe huaxue, 2022
In the field of radiochemistry, separation of lanthanides and actinides has always been one of the research hotspots. In order to achieve the burnup analysis, the lanthanide and actinide elements in the solution need to be separated.
LI Yu-hao   +6 more
doaj   +1 more source

Countercurrent Distribution Studies on Hamycin [PDF]

open access: yesApplied Microbiology, 1967
Hamycin, a polyene antifungal antibiotic, was isolated by use of countercurrent distribution. A pattern was obtained by plotting the absorption at 383 mμ of the contents of the various tubes against the tube numbers. The results indicated that the antibiotic contained three fractions, a major fraction (peak 2) comprising 48% of the
B N, Ganguli, V M, Doctor
openaire   +2 more sources

Western Pacific Zooplankton Community along Latitudinal and Equatorial Transects in Autumn 2017 (Northern Hemisphere)

open access: yesDiversity, 2021
During the autumn of 2017, a study was conducted to assess the zooplankton community composition in three sections (two latitudinal, going from Japan to the equator, and one longitudinal on the equator) of the Western Pacific Ocean.
Yi Long   +7 more
doaj   +1 more source

Countercurrent-distribution studies on histones [PDF]

open access: yesBiochemical Journal, 1967
1. The possibilities of fractionating histones and histone fractions by means of countercurrent distribution between two phases formed by water and butan-2-ol, in the presence of various concentrations of trichloroacetic acid, have been examined. 2. Although the principal histone fractions differ considerably in their partition ratios, a satisfactory ...
J A, Butler, D F, Power, J, Palau
openaire   +2 more sources

Thermoelectric Performance Evaluation and Optimization in a Concentric Annular Thermoelectric Generator under Different Cooling Methods

open access: yesEnergies, 2022
To ensure effective heat recovery of thermoelectric generators, a cooling system is necessary to maintain the working temperature difference of the thermoelectric couples, which decreases continuously due to thermal diffusion.
Wenlong Yang   +5 more
doaj   +1 more source

A Novel Model of Counter-Current Imbibition in Interacting Capillaries with Different Size Distribution

open access: yesEnergies, 2022
The imbibition phenomenon widely exists in nature and industrial applications. It is of great significance to study the mechanism of imbibition and the influence laws of related factors.
Zhenjie Zhang   +2 more
doaj   +1 more source

Die Fraktionierung von Polymethylmethacrylaten nach dem Molekulargewicht durch Gegenstromverteilung

open access: yesCHIMIA, 1973
A polydisperse sample of polymethylmethacrylate with an average molecular weight of 168000 has been fractionated by countercurrent distribution into fractions of different molecular weight using a phase pair prepared from acetone, n-hexane and water.
P. von Tavel, J. Wälchli, H. Rüfenacht
doaj   +1 more source

Kinetic modeling of countercurrent saccharification

open access: yesBiotechnology for Biofuels, 2019
Background Countercurrent saccharification is a promising way to minimize enzyme loading while obtaining high conversions and product concentrations. However, in countercurrent saccharification experiments, 3–4 months are usually required to acquire a ...
Chao Liang   +3 more
doaj   +1 more source

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