Results 41 to 50 of about 466,420 (180)

Mechanochemical Amidation Mediated by 1,1’‐Oxalyldiimidazole for the Synthesis of Agrochemicals

Chemistry – A European Journal, EarlyView.
Mechanochemical amidation using 1,1'‐oxalyldiimidazole (ODI) overcomes limitations of 1,1’‐carbonyl diimidazole (CDI) as coupling agent by enabling the efficient mechanochemical synthesis of three marketed agrochemicals from deactivated carboxylic acids.
Andrea Casagrande, Rubén Solorzano‐Rodriguez, Maria Carta, Francesco Delogu, Joris Vezzani, Allan Niidu, Evelina Colacino   +6 more
wiley   +1 more source

Experimental investigation and modelling on air layer formation around a rotating grinding wheel

Cogent Engineering, 2016
Impingement of grinding fluid deep into grinding zone is a challenge due to presence of air layer around the grinding wheel. This paper presents experimental observation on air boundary layer formed around a rotating grinding wheel, a rexine-cloth ...
Sujit Majumdar, Ahin Banerjee, Santanu Das, Samik Chakroborty   +3 more
doaj   +1 more source

Looking at Soil as It Is: Evolution of Microscopic Soil Characterization From Kubiëna to Artificial Intelligence

Journal of Plant Nutrition and Soil Science, EarlyView.
We provide a historic overview of microscopic soil structure characterization from its founding father, Walter Kubiëna, to several technical revolutions like automation, digitalization, and artificial intelligence. In addition to technical advancements, we explore how concepts and research questions have evolved in time.
Steffen Schlüter, Maik Geers‐Lucas, Peter Kühn, Hans‐Jörg Vogel   +3 more
wiley   +1 more source

Grinding wheel wear and material removal mechanisms during grinding of polycrystalline diamond

, 2020
Grinding is a widely used technology in the manufacturing process of polycrystalline diamond (PCD) cutting tools. Due to the high hardness of PCD, the process efficiency of grinding is low.
Thomas Bergs, U. Müller, F. Vits, S. Barth   +3 more
semanticscholar   +1 more source

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Grinding power model for flute grinding of solid tools based on equivalent chip thickness

Jin'gangshi yu moliao moju gongcheng
ObjectivesDuring the flute grinding process of solid tools, the majority of grinding power is converted into grinding heat. Excessive grinding power can cause a rapid temperature rise on the surface of the contact area between the grinding wheel and the ...
Lei REN, Jiangtao PAN, Daohui XIANG, Junjin MA, Xiaobin CUI   +4 more
doaj   +1 more source

Porous Organic Polymers: From Molecular Design to Scalable Technologies

Small, EarlyView.
This review introduces porous organic polymers (POPs) for a wide range of applications, including energy storage, gas adsorption, catalysts, adsorbents, biomedical applications, sensors, and other exciting fields, and critically analyzes the synthesis and modification, and how structural topology influences the composites' architecture of POPs, along ...
Hossein Mashhadimoslem, Hadi Shayesteh, Simindokht Zarei‐Shokat, Rokhsareh Bakhtiari, Sheyda Abedi‐Banaei, Zahra Sheikhlouiharzand, Parnia Mohebimanesh, Seyed Mohammad Amin Ojagh, Bahareh Bakhtiari, Ali Maleki, Theo G. M. van de Ven, Sohrab Zendehboudi, Ali Elkamel   +12 more
wiley   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source

Effect of laser-assisted ultrasonic vibration dressing parameters of a cubic boron nitride grinding wheel on grinding force, surface quality, and particle morphology

Reviews on Advanced Materials Science, 2021
In this article, the laser-assisted ultrasonic vibration dressing technique was applied to the cubic boron nitride (CBN) grinding wheel to study the effect of various process parameters (namely, laser power, dressing depth, feed rate, and grinding wheel ...
Yang Zhibo, Sun Wang, He Dongyu, Han Daocheng, Wang Wei, Guo Qiang, Zhang Yanru   +6 more
doaj   +1 more source

Interference and grinding characteristics in ultra-precision grinding of thin-walled complex structural component using a ball-end grinding wheel

, 2020
As for ultra-precision grinding of difficult-to-process thin-walled complex components with ball-end grinding wheels, interference is easy to occur. According to screw theory and grinding kinematics, a mathematical model is established to investigate the
Wang Tingzhang, H. Liu, Chunya Wu, Jian Chen, Mingjun Chen   +4 more
semanticscholar   +1 more source