Search for dissertations about: "D. Zhou"

Found 5 swedish dissertations containing the words D. Zhou.

2. 1. Experimental study of phase separation in Fe-Cr based alloys

   Author : Jing Zhou; John Ågren; Joakim Odqvist; Peter Hedström; Andersson Marcus; KTH; []
   Keywords : Duplex stainless steels; Ferritic stainless steels; Spinodal decomposition; Phase separation; Atom probe tomography; Clustering; Radial distribution function RDF ;

   Abstract : Duplex stainless steels (DSSs) are important engineering materials due to their combination of good mechanical properties and corrosion resistance. However, as a consequence of their ferrite content, DSSs are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation, namely, the ferrite decomposed into Fe-rich ferrite (α) and Cr-rich ferrite (α'), respectively. READ MORE

4. 2. Linear Interpolation D/A Converter Applied to Direct Digital RF Modulators

   Author : Zhou Yijun; Institutionen för elektro- och informationsteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; Electrical engineering; SOC.; quadrature modulator; interpolation; filter; DSP; CMOS; DAC;

   Abstract : This thesis deals with techniques for the full integration of radio frequency (RF) transmitter with CMOS technology. The theory and implementation of high performance digital-to-analog converters (DACs) for radio frequency (RF) transmitters have been studied. A linear interpolation DAC architecture is proposed. READ MORE

5. 3. Spatio-Temporal Data Mining for Location-Based Services

   Author : Gyözö Gidofalvi; Torben Bach Pedersen; Xiaofang Zhou; Agnès Voisard; Simonas Saltenis; Geomatic ApS - Center for Geoinformatics; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; spatio-temporal data mining; location-based services; location and trajectory anonymization;

   Abstract : Largely driven by advances in communication and information technology, such as the increasing availability and accuracy of GPS technology and the miniaturization of wireless communication devices, Location–Based Services (LBS) are continuously gaining popularity. Innovative LBSes integrate knowledge about the users into the service. READ MORE

6. 4. OSTE Microfluidic Technologies for Cell Encapsulation and Biomolecular Analysis

   Author : Xiamo Zhou; Wouter van der Wijngaart; Ellis Meng; KTH; []
   Keywords : Microfluidics; microfabrication; cell encapsulation; core-shell particle; microparticle synthesis; off-stoichiometry-thiol-ene; OSTE; OSTE ; lab-on-a-chip; surface modification; core-shell particle co-synthesis; microar- ray; micromixer; bonding; surface modification; droplet microfluidics; protein screening.; Mikrofluidik; mikrofabrikation; cellinkapsling; cores-shell kap- sel; mikrokapselsyntes; lab-on-chip; ickestökiometrisk tiol-en; OSTE; OSTE ; ytmodifiering; samtidig syntes av core-shellkapslar; mikroarray; mikromixer; sammanfogning; dropletmikrofluidik; proteindetektion.; Tillämpad medicinsk teknik; Applied Medical Technology;

   Abstract : In novel drug delivery system, the encapsulation of therapeutic cells in microparticles has great promises for the treatment of a range of health con- ditions. Therefore, the encapsulation material and technology are of great importance to the validity and efficiency of the advanced medical therapy. READ MORE

7. 5. The Impact of Substance P (SP) N-Terminal Metabolite SP1-7 in Opioid Tolerance and Withdrawal

   Author : Qin Zhou; Tsukasa Sakurada; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; Farmaceutisk biovetenskap; Biopharmacy; Biofarmaci; farmaceutisk biokemi; Pharmaceutical Biochemistry;

   Abstract : The heptapeptide SP1-7, a metabolite of the neuroactive peptide substance P (SP), is suggested to play a role in opioid addiction and memory function. These two dimensions are known to involve dopamine and glutamate transmissions mediated through dopamine receptors and N-methyl-D- aspartate (NNMA) receptors, respectively. READ MORE