Sökning: "buffer"

Visar resultat 21 - 25 av 485 avhandlingar innehållade ordet buffer.

1. 21. Molecular beam epitaxy growth and characterization of GaN, AlN and AlGaN/GaN heterostructures

   Författare :Stefan Davidsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; two-dimensional electron gas; MBE; Al_{2< sub>O3< sub>}; epitaxial growth; III-nitride; molecular beam epitaxy; GaN; nucleation layer; nitridation; AlGaN; HFET; 2DEG density; AlN; 2DEG; buffer layer; sapphire; 2DEG mobility; heterostructure field effect transistor;

   Sammanfattning : The III-nitride materials, consisting of Al, Ga, In and N, have several physical properties that make them attractive for semiconductor devices in electronic and optic applications. A wide range of direct energy bandgaps (0.7 eV - 6.1 eV) can be obtained. LÄS MER

3. 22. Innovation Engineering in Practice : Bridging Exploration and Exploitation in Large Manufacturing Incumbents

   Författare :Jenny Elfsberg; Andreas Larsson; Christian Johansson Askling; Tobias Larsson; Martin Steinert; Blekinge Tekniska Högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Innovation engineering; Innovation team; Exploration journey; Social connectedness; Organizational ambidexterity; Intentional PSS design; Futureproofing large manufacturing incumbents; Buffer role; Maskinteknik; Mechanical Engineering;

   Sammanfattning : This thesis discusses how large manufacturing incumbent companies potentially can ensure their longevity and future-proof themselves by infusing ambidexterity throughout their organizations. Ambidextrous companies are equipped to achieve success in both current and future business environments, providing valued solutions to customers today and in the future. LÄS MER

4. 23. Gradients of time and complexity : understanding how riparian and instream ecosystems recover after stream restoration

   Författare :Eliza Maher Hasselquist; Christer Nilsson; Stewart Rood; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bioassessment; biodiversity; boreal; bryophyte; chronosequence; complexity; diatom; geomorphology; habitat heterogeneity; hydromorphological; macroinvertebrate; macrophyte; nitrogen cycling; river restoration; riparian buffer; stable isotopes; succession; Sweden; Environmental Science; miljövetenskap;

   Sammanfattning : Why evaluations of the ecological outcomes of stream and river restoration have largely reported inconclusive or negative results has been the subject of much debate over the last decade or more. Understanding the reasons behind the lack of positive results is important for bettering future restoration efforts and setting realistic expectations for restoration outcomes. LÄS MER

5. 24. Seagrasses and their epiphytes : Characterization of abundance and productivity in tropical seagrass beds

   Författare :Jacqueline Uku; Mats Björk; Beatriz Diez; Evamaria Koch; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Seagrass; epiphytes; cyanobacteria; prokaryotes; diversity; productivity; carbon utilization; buffer sensitivity; Biology; Biologi;

   Sammanfattning : Seagrass beds cover large intertidal and subtidal areas in coastal zones around the world and they are subjected to a wide variety of anthropogenic influences, such as nutrient enrichment due to sewage seepage. This study was undertaken to address specific questions focusing on whether near shore tropical seagrasses that receive a constant influx of groundwater nutrient inputs, would exhibit a higher productivity and to what extent epiphytic algae reflect the impacts of nutrient inputs. LÄS MER

7. 25. A model of pH and redox buffer depletion in waste landfills

   Författare :James Crawford; KTH; []
   Nyckelord :;

   Sammanfattning : The geochemical processes governing the release of heavymetal contaminants from solid waste materials have been studiedexperimentally and modelled using a mass balance approach. Theaim of the modelling work was to develop calculation tools thatcan be used to predict the release rate of heavy metals fromwaste heaps or landfills. LÄS MER