This study aims to find the optimized parameters for surveying milling process of S50C steel in a minimum quantity lubrication (MQL) environment using support vector machine-genetic algorithm (SVM-GA). Based on experimental matrix designed by Taguchi method, surface roughness and cutting force data were collected corresponding each experiment with changes input such as speed, tooth feed rate, a...

Objectives: This study measures the association between hospital staff’s job strain (JS), mental quality of life (MQL) and how they are influenced by the organization models within emergency and critical care units. Material and Methods: This study describes workers employed in emergency departments and intensive care units of a French public hospital. A selfadministered questionnaire was used ...

In this work, we consider augmenting SQL with constructs allowing dynamic restructuring. Dynamic restructuring occurs naturally in a framework including second-order capabilities for integrating metadata and data within single queries. The context and motivating example for this extension is a federation of relational databases, containing semantically similar information in schematically dispa...

Machining is the major reliable practice in accomplishment of metal cutting industries. The accelerated growing competition demands top superior and large quantity with low cost products. Metal working fluids have significant fragment of manufacturing cost and causes ecological impacts and health problems. This work attempts to advance a competent machining alignment with no ecological impacts....

Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh dari jenis cairan pendingin (Dromus, Minyak Sawit, Sintetis) dan gerak makan (0.06 mm/rev, 0.08 0.1 mm/rev) terhadap tingkat kekasaran permukaan baja S45C dengan menggunakan metode pendinginan mistcooling. Mistcooling merupakan yang termasuk dalam minimum quantity lubricant lebih ramah lingkungan serta efisien. Berdasarkan data didapat...

Sustainable machining, with implementation of eco-friendly dry and minimum quantity lubrication (MQL) methods, has gained attraction researchers engineers to solve the environmental health allied issues caused by bulk usage conventional cutting fluids. Nanofluids have recently became more obvious choice as a fluid in MQL applications owing their superior thermo-physical properties. In this work...

Abstract Minimum quantity lubrication (MQL) is a sustainable machining process in which oil and air are mixed to form spray that can be directed the cutting zone. MQL factors like droplet size velocity their effect on remain unclear, especially when employing diverse oils operating settings. Mist formation determine how well droplets lubricate targeted area during machining. Numerical Experimen...

Nowadays, the environmental concern in machining industry is a fact. Because of that, in this article a new cooling-lubrication system which combines CO2 cryogenic and MQL technologies is presented. The aim of this new cooling-lubrication system is to offer an ecological and economic efficient alternative. Two nozzle adapters are proposed with different CO2 outlets. The developed nozzles are Pl...