Results 81 to 90 of about 12,286 (209)

"Weakly" Elliptic Gorenstein Singularities of Surfaces

, 1998
The main message of the paper is that for Gorenstein singularities, whose (real) link is rational homology sphere, the Artin--Laufer program can be continued. Here we give the complete answer in the case of elliptic singularities.
Nemethi, Andras
core   +1 more source

Effect of Bio-Based, Mixed Ester Lubricant in Minimum Quantity Lubrication on Tool Wear and Surface Integrity in Ultra-Precision Fly-Cutting of KDP Crystals

Lubricants
Potassium dihydrogen phosphate (KDP) crystals, vital for high-power laser systems, pose significant machining challenges due to their brittleness, low hardness, and hygroscopic properties.
Xuelian Yao, Feihu Zhang, Shuai Zhang, Jianfeng Zhang, Defeng Liao, Xiangyang Lei, Jian Wang, Jianbiao Du   +7 more
doaj   +1 more source

Application of MQL technique using TiO2 nanoparticles compared to MQL simultaneous to the grinding wheel cleaning jet

The International Journal of Advanced Manufacturing Technology, 2019
The minimum quantity lubrication + nanofluid technique has proven to be feasible in machining processes, since it has shown potential for improvements through its lubri-refrigeration and heat removal characteristics, beyond increase the surface quality workpiece surface, while minimizing diametrical wheel wear.
José Claudio Lopes, Mateus Vinicius Garcia, Roberta Silveira Volpato, Hamilton José de Mello, Fernando Sabino Fonteque Ribeiro, Luiz Eduardo de Angelo Sanchez, Kleper de Oliveira Rocha, Luiz Daré Neto, Paulo Roberto Aguiar, Eduardo Carlos Bianchi   +9 more
openaire   +2 more sources

2+1-dimensional electrically charged black holes in Einstein - Power Maxwell Theory

, 2012
A large family of new black hole solutions in 2+1-dimensional Einstein-Power-Maxwell (EPM) gravity with prescribed physical properties is derived. We show with particular examples that according to the power parameter k of the Maxwell field, the obtained
Gurtug, O., Halilsoy, M., Mazharimousavi, S. Habib   +2 more
core   +1 more source

Non-universal soft scalar masses in supersymmetric theories

, 1993
The existence of non--universal soft masses is the most general situation in supersymmetric theories. We study the consecuences that this situation has for the low--energy sparticle spectrum.
A. Lleyda, Alvarez-Gaumé, Bartl, Brignole, C. Muñoz, de Carlos, Derendinger, Dixon, Dixon, Drees, Ellis, Falck, Faraggi, Gato, Griest, Haber, Hagelin, Ibáñez, Ibáñez, Ibáñez, Ibáñez, Ibáñez, Ibáñez, Inoue, Inoue, Kaplunovsky, Kounnas, Kounnas, Nilles   +28 more
core   +1 more source

Analysis of tool wear and cutting temperature in WS2-assisted MQL turning of H13 steel

Discover Mechanical Engineering
This study aims to analyze the turning performance of H13 steel in dry and minimum quantity lubrication (MQL) environments, employing Tungsten Disulfide (WS2) as a solid lubricant. Machining of H13 steel is challenging, particularly in its hardened state.
Naman Sandhu, Rupinder Singh, Narinder Singh   +2 more
doaj   +1 more source

Numerical simulation of multi-principal elements high-entropy alloy milling based on minimal quantity lubrication

Jin'gangshi yu moliao moju gongcheng
ObjectivesHigh-entropy alloys (HEA) with multi-principal elements have many excellent characteristics such as high strength, high hardness and high wear resistance, which have attracted widespread attention from scholars.
Yanwei WU, Yin LIU, Xingwei SUN, Heran YANG, Zhixu DONG, Weifeng ZHANG   +5 more
doaj   +1 more source

Quantization of rotating linear dilaton black holes

, 2015
In this paper, we focus on the quantization of $4-$dimensional rotating linear dilaton black hole (RLDBH) spacetime describing an action, which emerges in the Einstein-Maxwell-Dilaton-Axion (EMDA) theory.
Sakalli, I.
core   +1 more source

Comparative Study Of Congestion Control Techniques In High Speed Networks [PDF]

, 2009
Congestion in network occurs due to exceed in aggregate demand as compared to the accessible capacity of the resources. Network congestion will increase as network speed increases and new effective congestion control methods are needed, especially to ...
Ahmad, Bashir, Ahmad, Shakeel, Bano, Arjamand, Hosam, Al-Sammarraie, Mustafa, Adli   +4 more
core   +1 more source

Assessing the cooling/lubricating agencies for sustainable alternatives during machining of Nimonic 80: Economic and environmental impacts

Heliyon
Developing sustainable manufacturing methods that balance environmental and economic aspects is challenging. A comprehensive analysis of the economics of machining and carbon emissions is essential to encourage adopting sustainable practices.
Mayur A. Makhesana, Harsh Vesuwala, Kaushik M. Patel, Ana Vafadar, Murat Sarikaya, Navneet Khanna   +5 more
doaj   +1 more source