Results 1 to 10 of about 10,118 (201)

Notizen: Über Aromatenkomplexe von Metallen LVII. Uran-tetracyclopentadienyl

open access: yesZeitschrift Fur Naturforschung - Section B Journal of Chemical Sciences, 1962
Nachdem wir kürzlich über die Metalltetracyclopentadienyle Nb(C5H5) 4 2, Ta(C5H5) 42 und Mo(C5H5) 43 berichtet hatten, gelang uns nun auch die Darstellung von Uran-tetracyclopentadienyl.
E. Fischer, Y. Hristidu
exaly   +2 more sources

Evaluation of Czech hop varieties (Humulus lupulus L.) in a dry area without irrigation

open access: yesKvasný průmysl, 2023
Since 2017, a field experiment has been conducted in a dry area with 11 Czech hop varieties. The highest yields were achieved by the Uran variety (2.83 t/ha) and Saaz Shine variety (2.76 t/ha), which also exhibited the lowest yield variability, at 11.17%
Vladimír Nesvadba   +3 more
doaj   +1 more source

Investigation of the EAS neutron component with the URAN array: first simulation and experimental results

open access: yesJournal of Physics: Conference Series, 2020
The URAN array was created in the Scientific and Educational Centre NEVOD (MEPhI). The URAN facility was designed to register neutrons that accompany EAS at the energies of the primary cosmic rays around and above the “knee”.
Z. T. Izhbulyakova   +6 more
semanticscholar   +1 more source

Comparison of two methods for assessment of the rod positioning uncertainty and consequences on the evaluation of correlation factors

open access: yesFrontiers in Energy Research, 2022
In this paper two major families of methods to deal with the assessment of the rod positioning uncertainty in a lattice are tested: a traditional one described in the International Handbook of Evaluated Criticality Safety Benchmark Experiments (IHECSBE ...
Nicolas Leclaire, John Darrell Bess
doaj   +1 more source

Digital Receivers for Low-Frequency Radio Telescopes UTR-2, URAN, GURT [PDF]

open access: yes, 2016
This paper describes digital radio astronomical receivers used for decameter and meter wavelengthobservations. Since 1998, digital receivers performing on-the-°y dynamic spectrum calculations or wave-form data recording without data loss have been used ...
V. Zakharenko   +51 more
semanticscholar   +1 more source

Methodological Support for Applying the Method of Majority Reservation in Measuring Channels

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2021
Introduction. For hazardous industries, the reliability of information and measuring equipment must ensure an almost complete absence of failure events, with their probability as low as 10-6.
N. V. Minchev
doaj   +1 more source

The myth of URANS

open access: yesJournal of Turbulence, 2023
Since the 1990s, RANS practitioners have observed spontaneous unsteadiness in RANS simulations. Some have suggested deliberately using this as a method of resolving large turbulent structures. However, to date, no one has produced a theoretical justification for this unsteady RANS (URANS) approach.
openaire   +2 more sources

Balanço da adubação nitrogenada sólida e fluida de cobertura na cultura de milho, em sistema plantio direto no Triângulo Mineiro (MG)

open access: yesRevista Brasileira de Ciência do Solo, 2000
Foi desenvolvido um experimento com as fontes uréia e uran aplicadas superficialmente ou incorporadas (5-7 cm) na cobertura nitrogenada de milho, no sistema plantio direto, com o objetivo de efetuar, na colheita, um balanço do N-uréia (15N) e quantificar
W. A. R. Lara Cabezas   +3 more
doaj   +1 more source

USING THE BROADBAND DIGITAL RECEIVERS IN INTERFEROMETER OBSERVATIONS WITH THE URAN NETWORK

open access: yesRadio Physics and Radio Astronomy, 2017
Purpose: The goal of the work is improving the efficiency of interferometric studies of cosmic radio sources at decameter waves. Design/methodology/approach: The URAN interferometer network observations are made usually at frequencies of 20 and 25 MHz
V. A. Shepelev   +4 more
doaj   +1 more source

Corn Yield and Soil Nitrous Oxide Emission under Different Fertilizer and Soil Management: A Three-Year Field Experiment in Middle Tennessee.

open access: yesPLoS ONE, 2015
BackgroundA three-year field experiment was conducted to examine the responses of corn yield and soil nitrous oxide (N2O) emission to various management practices in middle Tennessee.Methodology/principal findingsThe management practices include no ...
Qi Deng   +8 more
doaj   +1 more source

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