Sökning: "Huong Nguyen"

Hittade 4 avhandlingar innehållade orden Huong Nguyen.

  1. 1. A mechanistic description of the evolution of aromatic tar during catalytic upgrading of the raw gas produced from biomass steam gasification

    Författare :Huong Nguyen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass gasification; raw gas; catalytic raw gas upgrading; ilmenite; kinetic model; tar;

    Sammanfattning : The removal of tar from the raw gas produced during biomass gasification is a prerequisite for the viability of the process downstream of the gasifier. The tar, the composition of which is dominated by aromatics, readily condenses, leading to process disruption. LÄS MER

  3. 2. Kinetic modeling for catalytic upgrading of biomass-derived raw gas produced in dual fluidized bed gasifier: An application with ilmenite as the catalyst

    Författare :Huong Nguyen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 3. Goodness-of-fit in Multivariate Time Series

    Författare :Huong Nguyen Thu; Campus de Getafe Facultad de Ciencias Sociales y Jurıdicas Department of Statistics Universidad Carlos III de Madrid; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Sammanfattning : Goodness-of-fit is an important task in time series analysis. In this thesis, wepropose a new family of statistics and a new goodness-of-fit process for the wellknownmultivariate autoregressive moving average VARMA(p,q) model.Some preliminary results are studied first for an initial goodness-of-fit method. LÄS MER

  5. 4. Osteoporosis, a major health problem in Vietnam : life style factors and determinants of bone mass

    Författare :Thi Thanh Huong Nguyen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Vietnamese men and women;

    Sammanfattning : While the prevalence of osteoporosis and risk factors for low bone mineral density (BMD) has been well documented in Caucasian populations, there is a lack of data from Asia. This work was designed to clarify to what extent osteoporosis could be regarded as a major public health problem in Vietnam. LÄS MER