Results 41 to 50 of about 391,162 (302)

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

Adhesion resistance of nanocoatings of tool working surfaces [PDF]

open access: yesMATEC Web of Conferences, 2020
To increase the strength, reliability, durability of the cutting tool, various wear-resistant coatings are applied to its cutting part. At the same time, under cutting conditions, it is necessary to ensure a high degree of adhesion of the coating to this
Frolenkova Larissa   +4 more
doaj   +1 more source

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

Investigating dynamics of machine tool spindles under operational conditions [PDF]

open access: yes, 2011
Chatter is one of the major problems in machining and can be avoided by stability diagrams which are generated using frequency response functions (FRF) at the tool tip.
Budak, Erhan   +4 more
core   +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

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

Development of information system of geometrical modeling of parameters of cutting tools for turning processing details [PDF]

open access: yes, 2015
Uk: Розробка спеціалізованої інформаційної системи розрахунку параметрів різальних інструментів для токарної обробки деталей вузлів та агрегатів сільськогосподарського призначення.
Мацулевич, Олександр Євгенович   +1 more
core  

Integration of dynamic behaviour variations in the stability lobes method: 3D lobes construction and application to thin-walled structure milling [PDF]

open access: yes, 2006
Vibratory problems occurring during peripheral milling of thin-walled structures affect the quality of the fin- ished part and, to a lesser extent, the tool life and the spindle life.
Arnaud, Lionel   +3 more
core   +3 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Оптимизация режимов автоматизированной плазменной резки конструкционных материалов [PDF]

open access: yes, 2016
Реферат Выпускная квалификационная работа 113 с., 25 рисунков, 15 таблиц, 39 источников, 6 приложений, 14 демонстрационных листов. Ключевые слова: плазменная резка, плазматрон, свойства режущей дуги, источник питания, режимы плазменной резки, скорость ...
Первухин, Илья Евгеньевич
core  

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