Essays about: "drain"

Showing result 1 - 5 of 136 essays containing the word drain.

  1. 1. Olika filtermaterial vid jordbruksdränering

    University essay from SLU/Dept. of Soil and Environment

    Author : Hanna Falk; [2019]
    Keywords : dräneringsfilter; mineralfilter; organiska filter; syntetiska filter;

    Abstract : Drainage of arable land creates a better soil structure and a better aeration of the soil profile. Some fields are naturally drained, while others are dependent on drainage to create good cultivation conditions. Subsurface drainage is the most common method used to artificially drain arable land. READ MORE

  2. 2. Development of Ferroelectric Hafnium Oxide for Negative Capacitance Field Effect Transistors

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

    Author : Robin Atle; [2019]
    Keywords : Un-doped ferroelectricity; HfO2; Hafnium oxide; ALD; Atomic Layer Deposition; Hysteresis; P-E; polarization; Technology and Engineering;

    Abstract : With the transistor being the workhorse in modern electronics it has been vastly improved since its invention. However, the previous go-to improvement method of scaling it down has reached a dead end. Power dissipation has become a large concern and is in need of a solution. READ MORE

  3. 3. Formation and Evolution of Protoplanetary Disks

    University essay from Lunds universitet/Astronomi

    Author : Johan Appelgren; [2019]
    Keywords : protoplanetary disk; protoplanetary disk formation; protoplanetary disk evolution; planet formation; Physics and Astronomy;

    Abstract : A star forms with a surrounding protoplanetary disk after the collapse of a molecular cloud core. Subsequently, over a period of several Myr this protoplanetary disk of dust and gas is accreted onto the host star. We model the formation and evolution of such a protoplanetary disk using a one-dimensional numerical model. READ MORE

  4. 4. A Study of Energy Saving Actions in Older Buildings in Sweden

    University essay from KTH/Industriell ekonomi och organisation (Inst.); KTH/Industriell ekonomi och organisation (Inst.)

    Author : OSCAR LEFFLER; NASSIF MANSOUR; [2018]
    Keywords : Energy saving technologies; exhaust air heat pump; drain water heat recovery; insulation; geothermal heat pump; photovoltaics; return on investment; energy performance contracting; payback period; climate shell improvement; technical installations; calibration; housing associations; real estate managers; decision making; status quo bias.; Energibesparingsteknik; frånluftsvärmepump; spillvattenvärmeåtervinning; isolering; bergvärmepump; solceller; direktavkastning; energibesparingskontrakt; återbetalningsperiod; klimatskalförbättringar; tekniska installationer; kalibrering; bostadsförening; fastighetsförvaltare beslutsfattning; status quo bias.;

    Abstract : Modern energy saving technologies are become increasingly mature, easier to implement and financially profitable. Both the European Union and the Swedish government have directives with goals regarding energy savings for the year 2020 and 2030. READ MORE

  5. 5. On Robustness of Equilibria in Transportation Networks

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Rasmus Stålberg; [2018]
    Keywords : Technology and Engineering;

    Abstract : As infrastructural systems become ever more complex and interconnected, they may also become ever more vulnerable to system-wide faults due to local disturbances. As such it is of great importance to design these system to be resilient, i.e. to be able to withstand and recover from disturbances or new conditions. READ MORE