Results 41 to 50 of about 388,520 (305)

MHD wave modes resolved in fine-scale chromospheric magnetic structures [PDF]

open access: yes, 2015
Within the last decade, due to significant improvements in the spatial and temporal resolution of chromospheric data, magnetohydrodynamic (MHD) wave studies in this fascinating region of the Sun's atmosphere have risen to the forefront of solar physics ...
Jess, D. B., Verth, G.
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Improving the finishing face milling process of flat surfaces of small width parts

open access: yesТехнічна інженерія, 2021
Face mills equipped with superhard materials find more and more wide application at finishing of high hardness materials. These tools fully reveal the potential at high-speed processing.
H.M. , O.A. , N.O. , L.Ye.
doaj   +1 more source

Friction Analysis on Scratch Deformation Modes of Visco-Elastic-Plastic Materials [PDF]

open access: yes, 2012
Understanding of abrasion resistance and associated surfaces deformation mechanisms is of primary importance in materials engineering and design. Instrumented scratch testing has proven to be a useful tool for characterizing the abrasion resistance of ...
Budi , Setiyana   +3 more
core  

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Износ и стойкость принудительно вращающихся чашечных резцов при обработке валковых калибров [PDF]

open access: yes, 2012
Рассмотрен процесс износа чашечного инструмента в зависимости от изменения режимов резания, угла скрещивания осей заготовки и инструмента, а также от диаметра инструмента.
Мелконов, Л. Д.
core  

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

Аналіз зв'язків режимів різання та попереднього зміцнення твердого сплаву з інтегральним енергетичним критерієм при чистовому точінні сталей [PDF]

open access: yes, 2010
У статті представлені основні теоретичні підходи до аналізу зв'язків інтегрального енергетичного критерію процесу різання при чистовій обробці сталей гострінням твердосплавним інструментом з режимами різання й попереднього заміщення твердого сплаву.In ...
Калініченко, В. В.   +1 more
core  

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Distribution of profile and area roughness parameters by the location of the analyzed area on the milled surfaces of titanium alloy workpieces

open access: yesТехнічна інженерія
Surface roughness affects the performance and service life of parts. Understanding the differences between the profile and area methods of determining surface roughness allows obtaining more data for analyzing the texture of machined surfaces.
D.S. Bondar, N.O. Balytska
doaj   +1 more source

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