Results 41 to 50 of about 3,900,760 (304)

Evaluation weather conditions for growing sunflower (Helianthus annuus L.) in the northern part of the Left-bank Forest Steppe of Ukraine

open access: yesPlant Varieties Studying and Protection, 2020
Pourpose. Establish compliance of heat and moisture resources to biological requirements of sunflower hybrids (Helianthus annuus), reveal criteria for assessing weather conditions in the northern regions of Ukraine; establish links between temperature ...
С. М. Каленська   +1 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Warm and Dry Compound Events in Poland

open access: yesAtmosphere
The aim of this paper was to characterize the warm and dry compound events (WD days) in Poland during the period of 1966–2023, focusing on assessing the frequency and intensity of such events and their spatial and temporal variability, as well as on the ...
Joanna Wibig, Joanna Jędruszkiewicz
doaj   +1 more source

Temperature regime during the construction massive concrete with pipe cooling

open access: yesИнженерно-строительный журнал, 2019
Pipe cooling is one of the effective measures in order to reduce the exothermic heating of massive concrete structures. In this paper, analyzing the influence parameters of the pipe cooling system on the temperature regime and the thermal stress state in
Trong-Chuc Nguyen, Nikolay Aniskin
doaj   +1 more source

The maximum efficiency of nano heat engines depends on more than temperature [PDF]

open access: yes, 2019
Sadi Carnot's theorem regarding the maximum efficiency of heat engines is considered to be of fundamental importance in thermodynamics. This theorem famously states that the maximum efficiency depends only on the temperature of the heat baths used by the
Ng, Nelly   +2 more
core   +2 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

SHORT-TERM CHANGES OF AIR TEMPERATURE IN POLAND [PDF]

open access: yesAerul şi Apa: Componente ale Mediului, 2016
he paper presents an analysis of short-term changes in maximum air temperature values, understood as interdiurnal (T2-T1) temperature changes in Poland. It was calculated as the differences of the daily maximum air temperature from the multi-year period (
DOMINIKA CIARANEK
doaj   +1 more source

Türkiye Fındık Verimi Üzerinde Sıcaklık ve Yağışın Etkileri

open access: yesCoğrafi Bilimler Dergisi, 2021
In the study, it was aimed to determine the spatial and temporal distribution of hazelnut yields in Sakarya, Düzce, Samsun, Ordu, Giresun and Trabzon, which are in the top 6 in Turkey hazelnut production, for the period 1993-2019 and to analyze the ...
Cemil İrdem
doaj   +1 more source

Temperature dependent reversal of voltage modulated light emission and negative capacitance in AlGaInP based multi quantum well light emitting devices

open access: yes, 2012
We report a reversal in negative capacitance and voltage modulated light emission from AlGaInP based multi-quantum well electroluminescent diodes under temperature variation.
Bansal, Kanika, Datta, Shouvik
core   +1 more source

Gallium arsenide 55Fe X-ray-photovoltaic battery [PDF]

open access: yes, 2016
The effects of temperature on the key parameters of a prototype GaAs 55Fe radioisotope X-ray microbattery were studied over the temperature range -20 °C to 70 °C.
A. M. Barnett   +5 more
core   +1 more source

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