scholarly journals Towards Sustainable and Environmentally Friendly Metallic Powder Production

2021 ◽  
Author(s):  
MELCHOR SALAZAR MARTINEZ ◽  
Flavio Américo Lagos-Galván
Keyword(s):  
Low Cost ◽  
Environmentally Friendly ◽  
High Energy ◽  
Human Beings ◽  
Production Methods ◽  
Manufacture Process ◽  
Very High Energy ◽  
Current Production ◽  
Energy Consuming ◽  
Powder Manufacture

Abstract Intermetallic Fe-Al compounds have become very interesting materials due to their properties, such as good corrosion resistance, high-temperature resistance, high resistance/weight ratios, creep resistance, good wear resistance, and low cost, including some applications where they could replace stainless steels. However, their low ductility at room temperature has limited their use. One of the solutions is to generate powders of these intermetallics and press them in the wished form. Current production methods of this type of powders are very high energy-consuming, polluting, and harmful for handling for human beings. Because of the environmental situation in our planet, it is necessary to develop more environmentally friendly processes, which have lower energy requirements. Therefore, a comparison of a novel water vapor-based FeAl powder manufacture process with Mechanical Alloying (MA), one of the most commonly used processes to produce this type of powder is made in this work. This comparison aims to focus on the advantages of the novel process concerning MA, the last one, considering environmental as well as energy criteria.

scholarly journals Vers un modèle quantique pour la méditation

2020 ◽  
Vol 4 ◽  
pp. 165-180
Author(s):  
François Dubois ◽  
Christian Miquel
Keyword(s):  
Quantum Mechanics ◽  
Conceptual Framework ◽  
Energy Levels ◽  
High Energy ◽  
Energy Structure ◽  
Human Beings ◽  
Cognitive Sciences ◽  
Very High Energy ◽  
Mystical State ◽  
Very High

We study the meditative states of human beings from the conceptual framework provided by the fractaquantum hypothesis : analogously to an atom, Man can from his ``quiet'' base state explores various states of higher energy as loving or mystical state. We then look what energy states are explored during meditation: is it the ``hyperfine'' structure of its base state? is there a love ecstatic state? a very high energy structure mystical state? On one hand we illustrate these hypothesis from the experience of a large part of mystical traditions such as Hinduism or Buddhism and on another hand from contemporary cognitive sciences. In addition, quantum mechanics indicates that any interaction between energy levels is mediated by a boson of exchange. So we aim to identify the nature of this boson linking the various human being energy levels.

scholarly journals Titanium: An Overview of Resources and Production Methods

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1425
Author(s):  
Mohammed El Khalloufi ◽  
Olivier Drevelle ◽  
Gervais Soucy
Keyword(s):  
Low Cost ◽  
Extractive Metallurgy ◽  
Metallurgical Industry ◽  
Metal Production ◽  
Production Methods ◽  
The Past ◽  
Kroll Process ◽  
Production Processes ◽  
Energy Consuming ◽  
Insight Into

For several decades, the metallurgical industry and the research community worldwide have been challenged to develop energy-efficient and low-cost titanium production processes. The expensive and energy-consuming Kroll process produces titanium metal commercially, which is highly matured and optimized. Titanium’s strong affinity for oxygen implies that conventional Ti metal production processes are energy-intensive. Over the past several decades, research and development have been focusing on new processes to replace the Kroll process. Two fundamental groups are categorized for these methods: thermochemical and electrochemical. This literature review gives an insight into the titanium industry, including the titanium resources and processes of production. It focuses on ilmenite as a major source of titanium and some effective methods for producing titanium through extractive metallurgy processes and presents a critical view of the opportunities and challenges.

Design of Intelligent AC Contactor

2012 ◽  
Vol 198-199 ◽  
pp. 1179-1183
Author(s):  
Xiao Bin Li
Keyword(s):  
Energy Saving ◽  
Failure Rate ◽  
Fault Location ◽  
Low Cost ◽  
High Energy ◽  
Comprehensive System ◽  
Accurate Indication ◽  
On Line ◽  
Energy Consuming ◽  
And Control

Aiming at the problem of high energy consuming and failure rate on traditional AC contactor, the implement method of intelligent AC contactor is presented. The smart structures concept is introduced into the domain of AC contactor and the microcontroller C8051F040 is used as the control core. The intelligent AC contactor is a comprehensive system which assembles data acquisition and control, fault self-diagnosis and protection Function, etc. DC operation and on-line monitoring of the running state is also realized. Experiments show that the system has characteristics of low cost , accurate indication for running state and fault location, good protecting function, completely eliminating the noise and vibration operation, good performance in energy-saving , etc.

An Introduction to the New Kind Hydraulic Motor - Development and History

2011 ◽  
Vol 55-57 ◽  
pp. 2210-2213
Author(s):  
Hu Ran Liu
Keyword(s):  
Motor Development ◽  
High Efficiency ◽  
Low Cost ◽  
High Energy ◽  
Bevel Gear ◽  
Hydraulic Motor ◽  
New Construction ◽  
Trial Basis ◽  
Energy Consuming ◽  
The Moment

Hydraulic motor with swinging bevel gear is a new kind of hydraulic motor. There are many advantages of it over other kind hydraulic motor. The decelerating ratio is big, moment work ratio is high, energy consuming is low, and decelerating function is good. Compared with other general liquid presses motor, this type of motor has the all new construction with the function, being applicable to the low turning the soon big turning the moment specially, high- efficiency realm. A principle for studying this kind of new motor with realize technique, include go together with to flow to convert the technique, adjust soon principle with method, the wheel gear theories matches the function with many cogwheels engaged, whole machine is excellent to turn the design, the kind machine manufactures experiment etc. with function on a trial basis to.The item's research for the country inside blank, spread to move to the host simplification, economize the energy, decline the low cost having got the important meaning.

A Zn–NiO rechargeable battery with long lifespan and high energy density

2015 ◽  
Vol 3 (16) ◽  
pp. 8280-8283 ◽  
Author(s):  
Xiaowei Wang ◽  
Minxia Li ◽  
Yanfang Wang ◽  
Bingwei Chen ◽  
Yusong Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
Output Voltage ◽  
Low Cost ◽  
Environmentally Friendly ◽  
High Energy ◽  
High Energy Density ◽  
Rechargeable Battery ◽  
Average Output ◽  
Cycling Life

The presented battery delivers an average output voltage of 1.75 V and an energy density of 228 W h kg−1 on the basis of the weight of the two electrodes. It is promising for environmentally friendly and low cost batteries with high energy densities and good cycling life.

scholarly journals Utilization of Deep Eutectic Solvents to Reduce the Release of Hazardous Gases to the Atmosphere: A Critical Review

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 75
Author(s):  
Irfan Wazeer ◽  
Mohamed K. Hadj-Kali ◽  
Inas M. Al-Nashef
Keyword(s):  
Energy Demand ◽  
Negative Impact ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
High Energy ◽  
Molar Ratio ◽  
Green Solvents ◽  
Hazardous Gases ◽  
Carbon Dioxide Co2

The release of certain gases to the atmosphere is controlled in many countries owing to their negative impact on the environment and human health. These gases include carbon dioxide (CO2), sulfur oxides (SOx), nitrogen oxides (NOx), hydrogen sulfide (H2S) and ammonia (NH3). Considering the major contribution of greenhouse gases to global warming and climate change, mitigation of these gases is one of the world’s primary challenges. Nevertheless, the commercial processes used to capture these gases suffer from several drawbacks, including the use of volatile solvents, generation of hazardous byproducts, and high-energy demand. Research in green chemistry has resulted in the synthesis of potentially green solvents that are non-toxic, efficient, and environmentally friendly. Deep eutectic solvents (DESs) are novel solvents that upon wise choice of their constituents can be green and tunable with high biocompatibility, high degradability, and low cost. Consequently, the capture of toxic gases by DESs is promising and environmentally friendly and has attracted much attention during the last decade. Here, we review recent results on capture of these gases using different types of DESs. The effect of different parameters, such as chemical structure, molar ratio, temperature, and pressure, on capture efficiency is discussed.

Diffusion encouraged core-shell heterostructure Co3Sn2@SnO2 anode towards emerging dual ion battery with high energy density

2021 ◽  
Author(s):  
Salunkhe Tejaswi Tanaji ◽  
Abhijit N Kadam ◽  
Weldejewergis Gebrewahid Kidanu ◽  
Sang-Wha Lee ◽  
Tuan Loi Nguyen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Storage Systems ◽  
Low Cost ◽  
Environmentally Friendly ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Energy Storage Systems ◽  
Safety Features

Lithium dual-ion batteries (LDIBs) are currently receiving great attention as energy-storage systems due to their low cost, environmentally friendly characteristics, and good safety features. Herein, mesoporous Co3Sn2 and SnO2 core-shell...

CoMoO4/bamboo charcoal hybrid material for high-energy-density and high cycling stability supercapacitors

2020 ◽  
Vol 49 (31) ◽  
pp. 10799-10807
Author(s):  
Hui Chen ◽  
Haiman Hu ◽  
Fei Han ◽  
Jingdong Liu ◽  
Yurong Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Hybrid Materials ◽  
Hybrid Material ◽  
Low Cost ◽  
Environmentally Friendly ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Bamboo Charcoal

Here we report a supercapacitor with high energy density and high cycling stability using low-cost and environmentally friendly CoMoO4/bamboo charcoal (BC) hybrid materials as the cathode.

Strong interactions at very high energy

1964 ◽  
Vol 82 (1) ◽  
pp. 3-81 ◽  
Author(s):  
Evgenii L. Feinberg ◽  
Dmitrii S. Chernavskii
Keyword(s):  
High Energy ◽  
Strong Interactions ◽  
Very High Energy ◽  
Very High

Janus – A New Approach to Air Combat Pilot Training

2019 ◽  
Vol 2019 (4) ◽  
pp. 7-22
Author(s):  
Georges Bridel ◽  
Zdobyslaw Goraj ◽  
Lukasz Kiszkowiak ◽  
Jean-Georges Brévot ◽  
Jean-Pierre Devaux ◽  
...  
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
High Energy ◽  
Training System ◽  
Embedded Sensors ◽  
Pilot Training ◽  
New Approach ◽  
Combat Aircraft ◽  
Air Combat ◽  
The Cost

Abstract Advanced jet training still relies on old concepts and solutions that are no longer efficient when considering the current and forthcoming changes in air combat. The cost of those old solutions to develop and maintain combat pilot skills are important, adding even more constraints to the training limitations. The requirement of having a trainer aircraft able to perform also light combat aircraft operational mission is adding unnecessary complexity and cost without any real operational advantages to air combat mission training. Thanks to emerging technologies, the JANUS project will study the feasibility of a brand-new concept of agile manoeuvrable training aircraft and an integrated training system, able to provide a live, virtual and constructive environment. The JANUS concept is based on a lightweight, low-cost, high energy aircraft associated to a ground based Integrated Training System providing simulated and emulated signals, simulated and real opponents, combined with real-time feedback on pilot’s physiological characteristics: traditionally embedded sensors are replaced with emulated signals, simulated opponents are proposed to the pilot, enabling out of sight engagement. JANUS is also providing new cost effective and more realistic solutions for “Red air aircraft” missions, organised in so-called “Aggressor Squadrons”.

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