Results 41 to 50 of about 1,504,335 (301)

Experimental study on working mechanics of PDC bit with worn teeth

Jin'gangshi yu moliao moju gongcheng, 2023
PDC bits have been working in a worn state for a long time. To explore its cutting performance and avoid premature failure of the bit, this paper analyzes the load on the worn teeth and the drilling characteristics of the bit through single tooth cutting
Chunliang ZHANG, Jincheng WANG, Xiaohua KE, Xiao FENG, Yingxin YANG, Haitao REN, Zixuan HUANG   +6 more
doaj   +1 more source

Role of the kinematics of probing electrons in electron energy-loss spectroscopy of solid surfaces

, 2015
Inelastic scattering of electrons incident on a solid surface is determined by the two properties: (i) electronic response of the target system and (ii) the detailed quantum-mechanical motion of the projectile electron inside and in the vicinity of the ...
Krasovskii, E. E., Nazarov, V. U., Silkin, V. M.   +2 more
core   +1 more source

Thermo-mechanical processing of sugar beet pulp. I. Twin-screw extrusion process [PDF]

, 2006
Sugar beet pulp (SBP) is the raffinate of sugar extraction. Composed of empty vegetal cells, three quarters of it consist of polysaccharides. As it is cheap and produced in great quantities SBP is a potential raw material for industrial applications ...
Jorda, Jérémy, Rigal, Luc, Rouilly, Antoine   +2 more
core   +2 more sources

Mechanical properties and energy absorbing capabilities of Z-pinned aluminum foam sandwich [PDF]

, 2019
Aluminum foam sandwich (AFS) structures are suitable for impact protection in lightweight structural components due to their specific energy absorption capability under compression.
Kadkhodapour, Javad, Raeisi, Sajjad, Tovar, Andres   +2 more
core   +2 more sources

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

Experiment Investigation of the Compression Behaviors of Nickel-Coated Hybrid Lattice Structure with Enhanced Mechanical Properties

Micromachines, 2023
The lattice metamaterial has attracted extensive attention due to its excellent specific strength, energy absorption capacity, and strong designability of the cell structure.
Xiuxia Geng, Mingzhi Wang, Bingyu Hou
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

The Importance of Molecular Structure for Textural and Physicochemical Properties of Extruded Wheat Flour

Foods
This study elucidated the mechanistic interplay between the extrusion parameters (temperature and screw speed), starch molecular architecture (chain-length distribution), and key physicochemical properties of wheat flour extrudates.
Yuan Chai, Ruibin Wang, Bo Zhang, Yonglu Tang, Chaosu Li, Boli Guo, Ming Li   +6 more
doaj   +1 more source

Compression and Deformation Behaviors of Hierarchical Circular-Cell Lattice Structure with Enhanced Mechanical Properties and Energy Absorption Capacity

Aerospace, 2022
The design of lightweight lattice structures with excellent specific mechanical properties has received great attention in recent years. In this paper, inspired by the hierarchical structure of biological materials, a novel hierarchical circular-cell ...
Mingzhi Wang, Junchao Zhang, Weidong Wang   +2 more
doaj   +1 more source

Effect of process parameters on the energy requirement in ultrasonical treatment of waste sludge [PDF]

, 2009
Mechanical treatment methods are used as pre-treatment methods in order to enhance the efficiency of conventional sludge treatment processes and the sludge becomes more suitable for its complete treatment.
Akin, Anne-Marie Wilhelm, Bougrier, Chu, Dohanyos, Gonze, Gronroos, Henri Delmas, Kopp, Margulis, Mason, Muller, Neis, Neis, Nickel, Rana Kidak, Reisse, Show, Suslick, Thiem, Tiehm, Tiehm, Yin, Zhang   +23 more
core   +2 more sources