Sökning: "defect dominated"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden defect dominated.

  1. 1. Advances in Thermal Insulation : Vacuum Insulation Panels and Thermal Efficiency to Reduce Energy Usage in Buildings

    Författare :Thomas Thorsell; Folke Björk; Mark Bomberg; Targo Kalamees; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vacuum insulation panels; VIP; serpentine edge; thermal bridge; composite film; gas diffusion; defect dominated; holistic approach; building enclosure; integrated testing and modeling; energy equivalent; field performance; air flow; thermal insulation efficiency;

    Sammanfattning : We are coming to realize that there is an urgent need to reduce energy usage in buildings and it has to be done in a sustainable way. This thesis focuses on the performance of the building envelope; more precisely thermal performance of walls and super insulation material in the form of vacuum insulation. LÄS MER

  3. 2. Children with Down syndrome - : an epidemiological study with special focus on congenital heart defects

    Författare :Christina Frid; Jens Schollin; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pediatrics; Down syndrome; congenital malformations; mortality; morbidity; neonatal data; congenital heart defect; atrioventricular septal defect; operation; gender; Pediatrik; Paediatric medicine; Pediatrisk medicin; pediatrik; Pediatrics;

    Sammanfattning : To assess the impact of congenital malformations in Down syndrome (DS) on morbidity, mortality and outcome at birth, information on all children with DS born in the northern part of Sweden in 1973-80 (n=211) and 1995-98 (n=88) was collected. Most common were congenital heart defects (CHD), dominated by atrioventricular septal defects (AVSD). LÄS MER

  4. 3. Understanding Defect Structures and Host-guest Interactions in Metal-organic Frameworks

    Författare :Kang Zhengzhong; Yaoquan Tu; Lars Ojamäe; KTH; []
    Nyckelord :metal-organic framework; defects; host-guest; molecular dynamics simulation; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : Metal-organic frameworks (MOFs) represent a class of crystalline porous materials with prospective applications in molecular capture, separation, storage and catalysis. It has been discovered that there exist various structural defects in MOFs, which can have dramatic impact on their properties. LÄS MER

  5. 4. Molecular dynamics studies of superlattice growth phenomena using the embedded atom method

    Författare :Mats H. Carlberg; Karsten Wedel Jacobsen; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : This thesis is about the simulation of phenomena related to the growth of superlattices (SL). SLs have attracted considerable attentions in recent years due to their many interesting qualities. LÄS MER

  7. 5. Multiscale modeling of atomic transport phenomena in ferritic steels

    Författare :Luca Messina; Pär Olsson; Nils Sandberg; Pål Efsing; Pascal Bellon; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diffusion; impurities; iron; metals; kinetic Monte Carlo; ab initio; mean field; defects; embrittlement; reactor pressure vessel; neural networks; Fysik; Physics;

    Sammanfattning : Defect-driven transport of impurities plays a key role in the microstructure evolution of alloys, and has a great impact on the mechanical properties at the macroscopic scale. This phenomenon is greatly enhanced in irradiated materials because of the large amount of radiation-induced crystal defects (vacancies and interstitials). LÄS MER