Results 41 to 50 of about 942,686 (360)
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS 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
Development of Vertical Vibration Model for Micro-Tiller by Smoothed Particle Hydrodynamics Method
AgriEngineeringA micro-tiller vibrates severely during the rotary tillage process, which may cause operators to develop white finger disease. However, for most vibration models, the acting force between the soil and the rotary cutter roll was simplified to only a ...
Xiaochan Liu +5 more
doaj +1 more source
Dependence of the Cross Section of the Cut Layer on the Specific Cutting Resistance
MATEC Web of Conferences, 2019 This article deals with the study of the effect of cross section of the cut layer of material and its influence on the specific cutting resistance. Measurement and evaluation were carried out using two machined materials, according to the designation W ...
Petrů Jana +4 more
doaj +1 more source
Development of a Cutting Fluid with Abrasive for Increasing a Tools Life During Milling
Journal of Machine Engineering, 2023 In wet cutting, lubricants are used to improve lubrication, forced cooling and chip evacuation. In particular, improving the lubrication between the tool and the chip results in a lower coefficient of friction, suppressing the tool temperature change and
Ikuo TANABE, Hiromi ISOBE
doaj +1 more source
The effect of an organic pentasulfide EP additive in turning and milling operations [PDF]
, 2014 Coopération avec Ecole Centrale LyonBecause a cutting fluid could be equally used for different cutting operations, this study proposed to investigate the behavior of a well-known extreme-pressure additive (pentasulfide) in both turning and milling ...
BIERLA, Aleksandra +4 more
core +4 more sources
Reciprocal control of viral infection and phosphoinositide dynamics
FEBS 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
CONDITIONS OF REDUCED COST FOR MACHINE-BUILDING PRODUCTS [PDF]
Fiabilitate şi Durabilitate, 2019 The mathematical model for the cost of processing of machine parts was developed and the conditions for its reduction were determined. Analytically established the existence of a minimum of the cost of processing which achieved at high cutting speeds ...
Dmytro NOVIKOV +2 more
doaj
Study on the Cutting Performance of Micro Textured Tools on Cutting Ti-6Al-4V Titanium Alloy
Micromachines, 2020 Titanium alloys are widely used in various fields, but their machinability is poor because the chip would easily adhere to the tool surface during cutting, causing poor surface quality and tool wear.
Kairui Zheng +4 more
doaj +1 more source
An Innovative Experimental Study of Corner Radius Effect on Cutting Forces [PDF]
, 2014 The cutting forces are often modelled using edge discretisation methodology. In finish turning, due to the smaller corner radii, the use of a local cutting force model identified from orthogonal cutting tests poses a significant challenge. In this paper,
BISSEY BRETON, Stéphanie +3 more
core +6 more sources
FEBS 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