Essays about: "copper industry"

Showing result 21 - 25 of 51 essays containing the words copper industry.

1. 21. Prototype manufacturing of microwave components using plastic 3D printing

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Björn Malmquist; [2019]
   Keywords : ;

   Abstract : The ability to easily customize and produce specialized MW-components for research and industry is a real challenge and the need is identified, as standardized parts have limited use and can limit design freedom. This study aims at exploring if there are simple ways to manufacture rectangular X-band waveguides with operating frequency of 8-12GHz with novel polymer additive manufacturing and chemical metal deposition that can match Computer Numerical Control (CNC) manufactured rectangular metal waveguides in performance. READ MORE

3. 22. Commodity Price Boom and Copper mines in Chile: The assessment of local spillover effects on the labor market.

   University essay from Lunds universitet/Ekonomisk-historiska institutionen

   Author : Silvia Navarro Berdeal; [2019]
   Keywords : Commodity price boom; labour multipliers; natural resources; gender disparities; women labour markets.; Social Sciences;

   Abstract : Chile has been benefited from a commodity boom in the copper industry during the first decade of the 21st century. Does a mineral boom increase local labour opportunities? Can women get benefit from a resource boom? Can the mineral boom have indirect effects in non-mining sectors? The present paper attempts to explore and measure the impact of an exogenous increase in copper global prices between 2003 and 2011, on Chilean labor market, with a particular focus on gender disparities. READ MORE

4. 23. Life cycle assessment of a CAV, a VAV, and an ACB system in a modern Swedish office building

   University essay from Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Author : Nadeen Hassan; [2019]
   Keywords : Life cycle assessment; Environmental impacts; HVAC systems; Environmental indicator; Energy; Environmental performance; Impact assessment; Life cycle impact; Buildings; SimaPRO; Ecoinvent; Manufacturing phase; Operation phase; Active chilled beams; Variable-air-volume system; Constant-air volume system.; Technology and Engineering; Earth and Environmental Sciences;

   Abstract : Energy use in buildings contributes significantly to the global energy demand and environmental impacts. Among all building services, heating, ventilation, and air conditioning (HVAC) systems consume the most energy. HVAC systems are as well one of the largest consumers of natural resources and materials in the building sector. READ MORE

5. 24. Preliminary design of a small-scale liquid-propellant rocket engine testing platform

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Erik Andersson; [2019]
   Keywords : ;

   Abstract : Propulsion system testing before mission operation is a fundamental requirement in any project. For both industrial and commercial entities within the space industry, complete system integration into a static test platform for functional and performance testing is an integral step in the system development process. READ MORE

6. 25. Impact of Surrounding Objects on Inductive Wireless Power Transfer

   University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

   Author : Brenda Odhiambo; [2019]
   Keywords : Wireless power transfer; inductive coupling; Qi Specification; effect of metals; Technology and Engineering;

   Abstract : Many new models of smartphones and small electronic devices are using their wireless charging feature as a key selling point. This is due to the convenience of cable-free charging as well as not requiring multiple power adapters for charging different devices. READ MORE