Sökning: "Vargas"

Visar resultat 1 - 5 av 21 avhandlingar innehållade ordet Vargas.

  1. 1. Design for 3D Concrete Printing : Optimisation Through Integrated Workflows

    Författare :Jose Hernández Vargas; Johan Silfwerbrand; Helena Westerlind; Roberto Naboni; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D concrete printing; digital fabrication; concrete structures; additive manufacturing; robotic fabrication; design for manufacturing; structural optimisation; functionally graded concrete; topology optimisation.; 3D-betongutskrift; digital tillverkning; betongkonstruktioner; additiv tillverkning; robotstyrd tillverkning; design för tillverkning; strukturell optimering; funktionellt graderad betong; topologioptimering.; Betongbyggnad; Concrete Structures;

    Sammanfattning : The transition from conventional cast concrete to 3D Concrete Printing (3DCP) marks a paradigm shift by directly depositing fresh concrete layer upon layer according to a digital model without the need for a formwork. This technology offers the possibility of achieving innovative and complex geometries in an automated process. LÄS MER

  3. 2. Processing and properties of nanocomposites based on polylactic acid, chitin and cellulose

    Författare :Natalia Herrera Vargas; Kristiina Oksman; Aji P. Mathew; Jyrki Vuorinen; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocomposite; Cellulose; Chitin; Extrusion; Polylactic acid; Trä och bionanokompositer; Wood and Bionanocomposites;

    Sammanfattning : The production of bio-based and biodegradable nanocomposites has gained attention during recent years for environmental reasons; however, the large-scale production of these nanocomposites still poses challenges. The objective of this work has been to prepare bio-based and biodegradable nanocomposites via liquid-assisted extrusion and to gain a deeper understanding of the process and the relationship between the process, composition, structure and properties. LÄS MER

  4. 3. Highly Dynamic Drives for Electric Hybrid Vehicles : Electric Machine Design and Dynamic Test Method

    Författare :Yury Loayza Vargas; Industriell elektroteknik och automation; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Hybrid Vehicles; Electric Machine Design; Dynamic Testing; Dynamic loading; Synthetic Loading; FPGA; Torque Measurement; Field weakening controller FWC ; IPMSM; FEMM; LabVIEW; Dynamic Testing Technique; Dynamic Test Method; CompactRIO;

    Sammanfattning : Electric Hybrid Vehicles (EHVs) play a crucial role in the development towardsa more environmental friendly transportation. An alternative to solve someactual challenges with hybridization of vehicles is studied at the Division ofIndustrial Electrical Engineering and Automation (IEA) at Lund Universityin cooperation with the automotive industry. LÄS MER

  5. 4. Capturing the antecedents and aftermath of a family business process : The entrepreneurial journey of a displaced agricultural family in Colombia

    Författare :Enrique Sandino Vargas; Leona Achtenhagen; Daniel Pittino; Marcela Ramirez-Pasillas; Bengt Johannisson; Jönköping University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; agricultural family; Colombia; displacement; entrepreneurial journey; entrepreneurial process; familiness; family; family business; family capital; family-life context; family habitus; family business habitus; guerrilla; habitualization; habitus; farm; land; rural; violence;

    Sammanfattning : This study examines a displaced agricultural family during its entrepreneurial journey in Colombia using a single case study, following an inductive and interpretivist approach. The main objective of the dissertation is to explain how family interactions, historical events, and context influence the decision to start and potentially reactivate an agricultural family business. LÄS MER

  7. 5. Alkaliphilic Bacillus species and an alkaline active lipolytic enzyme

    Författare :Virginia Vargas Calle; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; soda lakes; alkaliphilic Bacillus sp.; lipolytic enzyme; Bacillus bogoriensis; Bacillus halodurans; Bioteknik;

    Sammanfattning : The Great Rift Valley running through Eastern Africa contains a large number of soda lakes. These unique lakes constitute among the most stable alkaline environments with a dense and varied population of microorganisms. Such microorganisms are invariable alkaliphiles and are considered to be a promising source of enzymes with unique features. LÄS MER