Search for dissertations about: "fast"

Showing result 11 - 15 of 3028 swedish dissertations containing the word fast.

2. 11. Fast pyrolysis of biomass : primary products and reaction pathways

   Author : David Usino; Tobias Richards; Weihong Yang; Högskolan i Borås; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fast pyrolysis; Py-GC-MS FID; Primary reactions; Cellulose; Xylan; Lignin; Birch wood; Co-pyrolysis; Mahogany; Iroko; Palm kernel shell; Biomass blend; Biomass interaction; Pretreatment; Resource Recovery; Resursåtervinning;

   Abstract : Pyrolysis of biomass to produce liquid fuel and chemicals has been considered as an alternativeto fossil fuel because biomass has a lower environmental impact; moreover, it is renewable andcould be sustainable. However, the process of bio-oil production involves a series of complexchemical reactions which are dependent on the biomass feedstock and composition,temperature, heating rate as well as residence time. READ MORE

4. 12. Consumer Contextual Learning : The Case of Fast Fashion Consumption

   Author : Emma Samsioe; Institutionen för tjänstevetenskap; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; learning; consumer learning; participation; context; group interviews; time perception; time work; shopping; fast shopping; newness; fast fashion; learning; consumer learning; participation; context; group interviews; time perception; time work; shopping; fast shopping; newness; fast fashion;

   Abstract : Consumers are dedicated and committed to figuring out ways and creating investigative activities to keep up with a fast-moving retail market. These ways and activities are in this study seen as learning activities, which focus on getting to know the marketplace. READ MORE

5. 13. Fast Numerical Techniques for Electromagnetic Problems in Frequency Domain

   Author : Martin Nilsson; Per Lötstedt; Abderrahmane Bendali; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fast Multipole Method; Minimal Residual Interpolation; Sparse Approximate Inverse preconditioning; Method of Moments; fast solvers; iterative methods; multiple right-hand sides; error analysis; Numerical Analysis; Numerisk analys;

   Abstract : The Method of Moments is a numerical technique for solving electromagnetic problems with integral equations. The method discretizes a surface in three dimensions, which reduces the dimension of the problem with one. A drawback of the method is that it yields a dense system of linear equations. READ MORE

6. 14. Inverse Problems in Tomography and Fast Methods for Singular Convolutions

   Author : Fredrik Andersson; Matematik LTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik; Unequally spaced FFT; Integral transforms; Singular integrals; Lippmann?Schwinger equation; Helmholtz equation; Inverse problems; Fast Gauss transform; Fast summation; Convolution; Radon transform; Tomography;

   Abstract : There are two, partially interlaced, themes treated in this thesis; inverse problems of tomographic type and fast and accurate methods for the application of convolution operators. Regarding the first theme, the inverse problem of Doppler tomography is considered and the Doppler moment transform is introduced for that purpose. READ MORE

7. 15. Fast track abdominal hysterectomy : On the mode of anesthesia, postoperative recovery and health economics

   Author : Ninnie Borendal Wodlin; Preben Kjølhede; Lena Nilsson; Christer Borgfeldt; Linköpings universitet; []
   Keywords : Abdominal hysterectomy; Cost-effectiveness; Fast track; General anesthesia; Health economy; Intrathecal morphine; Postoperative recovery Postoperative symptoms Randomized study; Spinal anesthesia; Quality of Life; MEDICINE; MEDICIN;

   Abstract : Introduction: Hysterectomy is the most common major gynecological operation in the Western World and approximately 5000 benign hysterectomies are performed in Sweden every year. Consequently it is a surgical procedure that affects many women. READ MORE