Results 51 to 60 of about 3,328,701 (318)

Atmospheric Pressure [PDF]

open access: yes, 1929
Having learned the meaning of pressure from the study of hydrostatics, the pupil is easily led to understand the striking phenomena of atmospheric pressure.
Begeman, L.
core   +1 more source

The Pressure-Temperature Regime of Iraq during the Period of 1948–2013 [PDF]

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2016
We have considered spatiotemporal changes in the pressure-temperature regime at the territory of Iraq and Middle Eastern countries, which is limited by the following geographical coordinates: 27.5–37.5° N, 37.5–50.0° E.
Yu.P. Perevedentsev   +2 more
doaj  

Foliar δ13C Showed No Altitudinal Trend in an Arid Region and Atmospheric Pressure Exerted a Negative Effect on Plant δ13C

open access: yesFrontiers in Plant Science, 2017
Previous studies have suggested foliar δ13C generally increases with altitude. However, some observations reported no changes or even decreased trends in foliar δ13C.
Zixun Chen, Guoan Wang, Yufu Jia
doaj   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

open access: yesFEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain   +11 more
wiley   +1 more source

Precipitation phase transition in austral summer over the Antarctic Peninsula

open access: yesУкраїнський антарктичний журнал, 2021
Investigating precipitation phase transitions is crucial for improving our understanding of precipitation formation processes and impacts, particularly in Polar Regions.
A. Chyhareva   +4 more
doaj   +1 more source

Characterization of the key membrane protein cytochrome Cyc2 from Ghiorsea bivora

open access: yesFEBS Open Bio, EarlyView.
This study reports the first detailed biochemical analysis of Cyc2TAG1_1, a cytochrome protein involved in microbial iron oxidation. We produced and purified this enzyme in E. coli, then measured its iron‐oxidizing efficiency, and characterized its electrical and structural properties.
Josiane Azizi   +6 more
wiley   +1 more source

On the short-term prognosis of anticyclonic formations in Vilnius by the hard cosmic ray flux variations / Trumpalaikė anticiklonų formavimosi ties Vilniumi prognozė pagal kietosios kosminės spinduliuotės srauto svyravimus /

open access: yesJournal of Environmental Engineering and Landscape Management, 2011
Measurements and analyses of variations of the hard cosmic ray flux (HCRF) were carried out in the energy range 1.2–1.6 MeV in Vilnius in 2002–2005, using gamma-spectrometer.
Dmitrijus Styro   +2 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

Crystalline Si nanoparticles below crystallization threshold : effects of collisional heating in non-thermal atmospheric-pressure microplasmas [PDF]

open access: yes, 2014
Nucleation and growth of highly crystalline silicon nanoparticles in atmospheric-pressure low-temperature microplasmas at gas temperatures well below the Si crystallization threshold and within a short (100 μs) period of time are demonstrated and ...
Ostrikov, K.   +11 more
core   +1 more source

Black Sea Baric Depression

open access: yesPresent Environment and Sustainable Development, 2015
This work is meant to demonstrate that, in the special synoptic conditions, on the surface of the Black Sea, a baric depression is being formed. This depression is formed when the Black Sea's water temperature is higher than the surrounding continental ...
Isaia Ion
doaj   +1 more source

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