UM SPIN COATER ARTESANAL BASEADO EM LIXO ELETRÔNICO: UMA ALTERNATIVA VERSÁTIL E DE BAIXO CUSTO

A HOMEMADE SPIN COATER BASED ON ELECTRONIC WASTE: A VERSATILE AND LOW COST ALTERNATIVE. High-precision equipment generally represents a significant portion of a laboratory budget, leading the access by laboratories with limited financial resources difficult. Then, adaptation of materials such as electronic trash may be a key factor to overcome financial obstacles. As the technological advancement brings with it an increase in the disposal of pieces of equipment considered obsolete, these pieces however can still be used in the construction of new equipment. The present work shows the employment of a scrapped computer HD in addition to an Arduino microcontroller and other electronic components to build a low-cost spin coater. The thickness of films obtained in the handmade equipment presented approximately five percent of difference in relation to films obtained in a commercial equipment.

Download Full-text

A Low-Cost High-Precision Vehicle Navigation System for Urban Environment Using Time Differenced Carrier Phase Measurements

Proceedings of the 2020 International Technical Meeting of The Institute of Navigation ◽

10.33012/2020.17164 ◽

2020 ◽

Author(s):

Jungbeom Kim ◽

Changdon Kee

Keyword(s):

Urban Environment ◽

High Precision ◽

Navigation System ◽

Carrier Phase ◽

Low Cost ◽

Vehicle Navigation ◽

Phase Measurements ◽

Vehicle Navigation System

Download Full-text

Low-cost high-precision GNSS: challenges and opportunities

10.31701/itsnt2018.12 ◽

2018 ◽

Author(s):

Yang Gao

Keyword(s):

High Precision ◽

Low Cost ◽

Challenges And Opportunities

Download Full-text

Studies on the Content of Selected Technology Critical Elements (Germanium, Tellurium and Thallium) in Electronic Waste

Materials ◽

10.3390/ma14133722 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3722

Author(s):

Joanna Willner ◽

Agnieszka Fornalczyk ◽

Magdalena Jablonska-Czapla ◽

Katarzyna Grygoyc ◽

Marzena Rachwal

Keyword(s):

Solar Cell ◽

New Technologies ◽

Electronic Waste ◽

Quantitative Composition ◽

Icp Oes ◽

Electronic Components ◽

Critical Elements ◽

Weee Recycling ◽

Icp Ms ◽

And Migration

The article draws attention to the problem of the presence of metals: germanium (Ge), tellurium (Te), thallium (Tl), and others (Cd, Ba, Co, Mn, Cr, Cu, Ni, Pb, Sr, and Zn) in selected waste of electrical and electronic equipment (WEEE). As a result of the growing demand for new technologies, the global consumption of TECs has also been increasing. Thus, the amount of metals in circulation, of which the impacts on the environment have not yet been fully understood, is constantly increasing. Due to the low content of these metals in WEEE, they are usually ignored during e-waste analyses. The main aim of this study was to determine the distribution of Ge, Te, and Tl (and other elements) in ground sieve fractions (1.0, 0.5, 0.2, and 0.1 mm) of selected electronic components (solar lamps, solar cell, LED TV screens, LCD screens, photoresistors, photodiodes, phototransistors) and to determine the possible tendency of the concentrations of these metals in fractions. This problem is particularly important because WEEE recycling processes (crushing, grinding, and even collection and transport operations) can lead to dispersion and migration of TCE pollutants into the environment. The quantitative composition of e-waste was identified and confirmed by ICP-MS, ICP-OES and SEM-EDS, and XRD analyses. It was found that Ge, Te, and Tl are concentrated in the finest fractions of ground e-waste, together with Cd and Cr, which may favor the migration of these pollutants in the form of dust during storage and processing of e-waste.

Download Full-text

Research on High Precision Attitude Measurement of Flexible Link Based on Low Cost Sensors

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/714/3/032068 ◽

2021 ◽

Vol 714 (3) ◽

pp. 032068

Author(s):

Feng Yu

Keyword(s):

High Precision ◽

Low Cost ◽

Attitude Measurement ◽

Flexible Link

Download Full-text

From a Seed to a Need: the Growth of Shape Memory Applications in Europe.

MRS Proceedings ◽

10.1557/proc-246-377 ◽

1991 ◽

Vol 246 ◽

Cited By ~ 10

Author(s):

Ir. J. Van Humbeeck

Keyword(s):

Shape Memory ◽

Low Cost ◽

Marketing Research ◽

Research Approach ◽

Manufacturing Cost ◽

Product Price ◽

Key Factor ◽

Place Promotion ◽

Memory Applications ◽

The Cost

AbstractA more systematic marketing research approach has finally revealed good ideas anticipating a market need for the use of shape memory alloys. The success of those new ideas, prototypes and applications are analysed in terms of “the value of the function”, defined as the importance of the function divided by the cost of providing the function. A high importance and/or a low cost of the function are thus the basic requirements for the successful introduction of shape memory applications. Attention is also paid to the way how the 4 P's, product, price, place, promotion (the marketing mix) are applied by the European companies. Those different items will be illustrated on the basis of some small-, medium- and largescale applications, used in different markets. “to the point research”, fundamental and applied, on material properties as well as on manufacturing (cost reduction) is being discussed as the key factor to increase the function value.

Download Full-text

ANALYSIS OF ECONOMIC ACTIVITY OF REGIONAL AIRPORTS OF FRANCE AND REGIONAL AIRPORTS OF THE CENTRAL FEDERAL DISTRICT: DEVELOPMENT OF LOW-COST AIRLINES DESTINATIONS AS A KEY FACTOR IN THE PASSENGER TRAFFIC GROWTH

Vestnik of Samara State University of Economics ◽

10.46554/1993-0453-2021-1-195-75-87 ◽

2021 ◽

Vol 1 (195) ◽

pp. 75-87

Author(s):

V.V. Rublev ◽

Keyword(s):

Low Cost ◽

Federal District ◽

Air Transportation ◽

Minimal Impact ◽

National Budget ◽

Passenger Traffic ◽

Central Federal District ◽

Route Network ◽

Key Factor ◽

Regional Airports

The article presents an analysis of the activities of regional airports in France in 2019. The growth of passenger traffic was observed in those airports that actively developed cooperation with budget airlines, increasing the number of destinations in the route network. Regional airports in France, whose route network structure did not expand in 2019, showed a slight decrease in passenger traffic (from –0.1% to –3%). The first and only experimental regional airport in France (city of Beziers), handling flights of only one budget airline, Ryanair, showed an increase in passenger traffic by 14.5% in 2019. The share of routes of budget airlines in the structure of the route network of regional airports in France is quite high. The key problems of regional airports in Russia are the low passenger traffic and the underdeveloped route network. Due to the presence of the only national budget airline "Pobeda" on the market and the minimal impact on the segment of budget air transportation of foreign airlines, the share of budget air transportation destinations in the structure of regional airports of the Russian Federation continues to remain at an extremely low level. 2019 showed a record growth in passenger traffic at regional airports in the Central Federal District (an increase from +2.8% to +262%, with the exception of Tambov Airport, whose passenger traffic fell by 57.4%), which indicates an increase in demand and the need to expand the route network of regional airports. On the example of the Voronezh airport, a model for the development of low-cost airline destinations is presented.

Download Full-text