Essays about: "surface treatment"

Showing result 1 - 5 of 297 essays containing the words surface treatment.

  1. 1. Dimples in corrugated channels to improve efficiency in plate heat exchangers

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Gustav Karlsson; [2020]
    Keywords : Dimples; Plate Heat Exchangers; Heat Transfer Enhancement; CFD; Large Eddy Simulation; Reynolds Averaged Navier Stokes Simulation; chemical engineering; kemiteknik; Technology and Engineering;

    Abstract : The development of new heat exchanger patterns is ever changing. Companies are constantly pushing innovation to satisfy costumer needs in terms of thermal efficiency, reliability and serviceability. In this thesis, the implementation of dimples in the corrugated pattern of a plate heat exchanger is investigated to increase the thermal efficiency. READ MORE

  2. 2. Influence of cropping and fertilization on soil pore characteristics in a long-term field study

    University essay from SLU/Dept. of Soil and Environment

    Author : David Nimblad Svensson; [2020]
    Keywords : X-ray CT; soil structure; biopores; connectivity;

    Abstract : Soil porosity, pore size distribution and pore characteristics such as connectivity are important for a range of soil processes including ease of root growth and air and water transport. The pore structure is therefore an important part of soil fertility. READ MORE

  3. 3. Bond strength between zirconia restoration and titanium abutment after recementation, with different surface treatments.

    University essay from Malmö universitet/Odontologiska fakulteten

    Author : Amanda Cervenka; Hanna Ekdahl; [2020]
    Keywords : bond strength; recementation; surface treatment; titanium abutment; zirconia;

    Abstract : SAMMANFATTNING Syfte Syftet med studien var att utvärdera hur olika ytbehandlingar på titandistanser inför recementering påverkar bindningsstyrkan hos konstruktionen. Material och metod 30 provkroppar bestående av zirkonia (Z-CAD HTL, Metoxit, Thayngen, Switzerland) adhesivt cementerade (Panavia™ V5, Kuraray Noritake, Tokyo, Japan) till titandistanser (Elos Accurate® Hybrid Base, Elos Medtech, Timmersdala, Sweden) delades in i tre grupper med 10 provkroppar i varje grupp: kontrollgrupp (C), sandblästrade med aluminiumoxid (AA) och skrapningsgrupp (S). READ MORE

  4. 4. Design & optimization of modular tanksystems for vehicle wash facilities

    University essay from Karlstads universitet

    Author : Pontus Marco; [2020]
    Keywords : Water reclamation system; Water treatment; Washing system; Modular; Tank system; Fluid flow; Microsoft Excel; Visual Basic for Applications;

    Abstract : Clean and safe water is important for the well being of all organisms on earth. Therefore, it is important to reduce harmful emissions from industrial processes that use water in different ways. In vehicle washing processes, water is used in high-pressure processes, as a medium for detergents, and for rinsing of vehicles. READ MORE

  5. 5. Estimating Risks of Pharmaceutical NSAID Mixtures in Surface Waters through Risk Cups : – Implications for Sustainability

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Per Mandahl; [2020]
    Keywords : Sustainable Development; Ecotoxicology; Risk Cup; Pharmaceuticals; Surface Water; MEC PNEC;

    Abstract : Background: Use of pharmaceuticals can lead to unchanged or metabolite residues in surface water that may result in negative environmental effects. Sweden has adopted the Generational goal defining direction and changes needed to become a sustainable nation, these align with the UN Sustainable Development Goals (SDGs). READ MORE