Introduction: From a long time ago, benefiting from Technology has been an inevitable thing for human interests, which is born and based on science. It can be claimed that there is harmony between ethics, science and Technology, which promote each other. In this article, the researcher discusses this harmony and compatibility. Material and Methods: The current review study was descriptive and using the study of sources and research keywords among the books and articles published in the databases of Thomson Information Institute, Science Direct and Pub Med. Conclusion: As science and Technology continue to advance and become more integrated into our daily lives, ethical considerations become increasingly important. For example, the rise of artificial intelligence (AI) has raised questions about the potential implications of creating machines that can make autonomous decisions and take actions. If science and Technology were considered as a tool, it should have been able to subjugate humans and influence all aspects of behavior and values. While it has become a problem that eventually becomes aligned with morality by applying reason, and people now seek help from it as a tool.

The industry uses SCM440 steel extensively because of its many characteristics. Nevertheless, wear and vibration are two issues that this steel may bring about. Minimum Quantity Lubricant (MQL) Technology is being employed extensively as the most efficient substitution approach in pursuit of a cost-effective alternative solution. Vibrations and acoustic emission signals work well for tracking surface roughness and tool wear. It is possible to use undesirable machining factors as parameters to study the behavior of the process. Regression analysis of several factors allows for the discovery of weaknesses and vulnerabilities in the machining process. Optimizing the production process and enhancing quality are possible with the use of effective factors. The two parameters that have the biggest effects on machining quality are feed rate and cutting depth. Feed rate is known to be sensitive to surface roughness, while cutting depth is recognized to be sensitive to tool wear.

In drilling operation, the surface quality, cutting forces, burr formation mechanism and burr size (height, thickness), tool wear and tool life are considered as the important elements for drilling hole quality assessment which low amount of information is available in this regards. Therefore, on the basis of review of literature, the main aim of this work is to study the effects of MQL and dry lubrication strategies on thrust force, surface quality and burr formation morphology and size (height and thickness) when drilling 6061-T6. According to experimental observations, increased speed and feed rate under dry and MQL modes led to lower burr height, while under lower cutting speed, the direct effect of MQL is sensible. In addition, in dry drilling, lower average surface roughness was monitored. Those chips recorded under dry condition have higher quality and less segmentations on the free surface as compared to those chips recorded under MQL mode, which however resembles more hardness on the chips and higher cutting forces required for drilling operation.

The use of a minimum quantity of lubrication (MQL) with extremely low consumption of lubricant in machining processes has been reported as a technologically and environmentally feasible alternative to conventional flood cooling. In hot machining, the external heat source is applied during machining that will assist to increase machining performance. Many external heating techniques are available and each type has advantages/disadvantages. 17-4 PH stainless steel (AISI630) is martensitic stainless steel, which is widely used in energy equipment, aerospace and petrochemical industries. The objective of the present paper is to integrate MQL technique, for the first time, with a hot turning process for finding an optimum possible hybrid technique for a particular machining process. The effects of different machining parameters on MQL turning of 17-4 PH stainless steel have been investigated in comparison with dry and wet machining processes. Experiments were also designed for machining using MQL and dry techniques to evaluate surface roughness, tool wear, machined surface morphology, chip morphology as well as chip formation mechanism under different pre-heating temperatures. The results show that applying MQL technique with online thermally enhanced turning (MQL-hot turning) increases the efficiency of machining of 17-4 PH stainless steel. The cutting parameters and pre-heating temperature are important parameters and should be selected carefully when using hybrid MQL-hot turning. In addition, machining with MQL is beneficial to the environment and machine tool operator health as lubricant consumption during operation with MQL is 7-fold lower than in the conventional system.

Minimum quantity lubrication (=MQL) technique has many technological and economic advantages in grinding operation. It not only improves general grinding performance such as surface integrity, grinding forces and wheel wear, but also, it is an eco-friendly technique because of its low consumption of cutting fluid. Despite these advantages, MQL technique has a serious thermal problem in grinding operations due to small amount of cooling. To overcome this problem combination of hybrid nanofluid and ultrasonic vibration has been suggested. Nanofluid can increase heat transfer from workpiece/wheel interface due to its high thermal conductivity. Also, ultrasonic machining can decrease heat generation due to its reciprocating mechanism and reduction of time and length of contact between grain and workpiece. In this research hybrid Multi Walled Carbon Nano Tubes (=MWCNT) (with high thermal conductivity) and Al2O3 (with good lubrication effect) nanofluid have been utilized. The results have shown that combination of MQL and UAG leads to decrease of maximum grinding temperature up to 60.2% in comparison to dry grinding (from 254oC to 101oC). Moreover, friction coefficient and tangential grinding force have been reduced up to 35.9 and 69.2 percent respectively. Furthermore, no burning has been observed with combinations of these techniques while severe burning has been observed in dry grinding. Surface morphology analysis has shown decrease of plastic deformation and side flow. Finally, the generated chips have shown similarity of cutting mechanism in in the utilized techniques and conventional cutting fluids.

In the current research, the effect of cutting depth and speed on surface topography, microhardness and microstructural changes in cross-sectional surface of turned parts under dry, wet, MQL and cryogenic cooling (CO2) conditions, on 304L stainless steel has been investigated. The main origin of surface topography defects was the formation of built up edge (BUE) on the cutting tool and its removal again. Also, the increase in cutting speed causes instability in the formation of BUE, as a result the volume of accumulated BUE decreases. Considering the improvement of surafce topography, in the order of priority, the efficiency of MQL, wet and cryogenic methods has been from the highest to the lowest compared to the dry method. the cross section of machined samples were prepared and it was observed that subsurface hardness of the samples decreases with the distance from the surface up to 34% and approaches the hardness of the bulk material. The hardness value in cross section of machined samples is directly related to the work hardening caused by severe plastic deformation on machined surface. With increase of cutting speed, the intensity of plastic deformation increases and the hardness under the surface increases. Different cooling and lubrication processes have a direct effect on thickness of the microstructural deformed layer. Under the highest value of cutting speed used in this research, the maximum reduction in thickness of the deformed layer of the microstructure in cryogenic and MQL conditions compared to the dry mode was equal to 62% and 28%, respectively

In this research, the usage possibility of minimum quantity lubrication in grinding super alloy Inconel 738 has been studied empirically to reach improved grinding and lubricating conditions. For reaching this purpose, based on Taguchi design of experiment method grinding variables were set in three levels and lubrications were set in six levels in order to compare conventional, dry and MQL methods. Studies have shown that in grinding this material by MQL method we can obtain the results very close to conventional mode in terms of force and surface roughness even having better surface quality. Results in MQL method by considering various oils with different viscosities show that Behzist 6046 and Canola herbal-based oil are the best replacement of conventional method in terms of force reduction and surface roughness. In fact, in the case of using the MQL method together with Behzist 6046 oil, a 50% reduction in the force output is observed and when using Behzist 6043 oil, there is only a 30% difference in the surface roughness obtained with the traditional method, which creates a better surface smoothness is visible. For all the 100 investigated modes, the results show that the optimal levels for the variables of advance speed, stone wheel speed and chipping depth are level 1, 2046 rpm and 5 microns, respectively. The specific vertical force can be predicted in more than 50% of the tests with the least error (about 20%).

In this experimental work, the effects of cutting fluid and different cutting parameters on surface roughness, tool wear, and chip morphology during turning of Al7075-T6 were investigated. Machining experiments have been done in different environments such as dry, wet, minimum quantity lubrication (MQL) as well as a homemade ultrasonic nozzle- minimum quantity lubrication (UN-MQL). Ultrasonic vibrations can be used to effectively atomize the cutting fluid into fine and uniform-sized droplets and smaller spray angles with a larger spray deposition distance. The MQL system and machining parameters were evaluated by the design of experiments (DOE) method which allows us to carry out the optimization analysis by performing a relatively small number of experiments while determining the influence on the machining performance using the analysis of variance technique. In the second step, an optimization of the machining parameters was sought using signal-to-noise ratio analysis. Therefore, the response surface methodology was determined in a regression analysis, which was used to model the influence of the parameters on the performance. The fine droplets produced by the UN-MQL system penetrate effectively into the machining zone. Finally, the chip morphology, tool wear and surfaces of the machined parts were examined using optical microscopy to identify the chip formation mechanism in different machining conditions. Cutting tool wear were also examined using the SEM tests to quantify the tool wear zones under specific process parameters. Experimental results show that applying UN-MQL system reduces the surface roughness and tool wear by up to 30% in comparison to the conventional MQL system.

Many books have been written to illustrate the position of the new technologies in teaching and learning a foreign or second language (L2); nonetheless, most of these books have not been successful. The Handbook of Technology and Second Language Teaching and Learning edited by Caral A. Chapell and Shanon Sauro and published by Wiley Blackwell in 2017, provides a comprehensive overview of the various facets of the use of Technology in teaching and learning an L2. This book has not been translated into Persian and no critical review has been published for it; accordingly, this study sought to both introduce and critically review this book. The current critical review revealed some advantages including comprehensiveness of the whole book, the expertise of the writers, up-to-dateness, content and format integrity, and the use of valid sources. The main criticisms are the exclusion of some of the very recent technologies, perhaps due to the ever-changing and exponentially volatile nature of the technological improvements and expansions, the introduction of too many technologies at the theoretical level without providing information about their practical use. Generally, the book is an invaluable and academically written source for L2 practitioners, postgraduate students, and researchers.

SKD 11 tool steel is among the most popular metals in mold industries for making different kinds of cold work molds and dies with high accuracy and long service life. The demand for higher quality, lower manufacturing costs, particularly the environmentally friendly characteristics, have provided the stimuli for manufacturers and researchers to find alternative solutions. An excellent media is formed in the cutting zone by using MQL nanofluids in order to enhance the thermal conductivity and tribological characteristics; therefore, improving the machining performance. The formation of the lubricating film as well as the rolling action of nanoparticles in contact zones has gained much attention in the machining field. In this research work, the application of MQL Al2O3 nanofluids with vegetable oils and emulsion 5% is developed for slotting end milling of SKD 11 steel using normal HSS tool. The cutting forces, tool wear, tool life, and surface roughness are investigated to evaluate the effectiveness of MQL nanofluid on cutting performance. The experimental results reveal that the cutting forces and cutting temperature decrease and the surface quality and tool life enhance. Furthermore, the improvement of the thermal conductivity of nanofluids is proven when compared to pure fluids. Due to the rise of viscosity and thermal conductivity, the soybean oil-based nanofluid, which is almost inherently nontoxic, gives superior lubricating and cooling properties suitable for MQL application compared to emulsion-based nanofluids. The novel environmental friendly Technology definitely brings out many technological and economic benefits in machining practice.