Sökning: "Mg O"

Visar resultat 6 - 10 av 67 avhandlingar innehållade orden Mg O.

1. 6. Magnetism in Band Gap Engineered Sputtered MgxZn(1-x)O Thin Films

   Författare :Sreekanth Mahadeva; K Venkat Rao; Lyubov Belova; Mark Fox; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Magnetron co-sputtering; MgO; MgxZn 1-x O; MnxMg 1-x O; thin films; Room-temperature ferromagnetism; band gap engineering; and intrinsic defects;

   Sammanfattning : This dissertation presents a comprehensive study of the intrinsic room temperature ferromagnetism, RTFM, in technologically important thin films of ZnO, MgO, Mg@ZnO, the so-called d0–magnets that do not contain any intrinsic magnetic elements. We also present the first report on magnetism in Mn doped MgO films fabricated by dc magnetron sputtering. LÄS MER

3. 7. Preparation, characterization and properties of nitrogen rich glasses in alkaline earth-Si-O-N systems

   Författare :Ali Sharafat; Saeid Esmaeilzadeh; Stuart Hampshire; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxynitride glasses; glass forming region; nitrogen content; hardness; refractive index; Inorganic chemistry; Oorganisk kemi; oorganisk kemi; Inorganic Chemistry;

   Sammanfattning : Nitrogen rich glasses in the systems Ca-Si-O-N, Sr-Si-O-N and AE-Ca-Si-O-N (AE = Mg, Sr and Ba) have been prepared using a novel glass-synthesis route. The limits of the glass forming regions in the Ca and Sr systems and substitution limits in the AE-Ca-Si-O-N systems have been determined and physical properties of the glasses measured. LÄS MER

4. 8. Profitability = f(G) : Computational Thermodynamics, Materials Design and Process Optimization

   Författare :David Dilner; Malin Selleby; Mao Huahai; André Costa e Silva; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CALPHAD; steel; sulfide; steelmaking; thermodynamics; ICME; CALPHAD; stål; sulfid; ståltillverkning; termodynamik; ICME; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : The thesis starts by giving a motivation to materials modeling as a way to increase profitability but also a possibility decrease the environmental impact. Fundamental concepts of relevance for this work are introduced, this include the materials genome, ICME and of course the CALPHAD method. LÄS MER

5. 9. Treatment of arsenic contaminated drinking water from the sources around the gold mining areas of Geita and Mara, Tanzania : Removal efficiency of locally available materials, bauxite, gypsum and magnesite

   Författare :Regina Filemon Irunde; Prosun Bhattacharya; Felix Mtalo; Sudip Chakraborty; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arsenic; bauxite; gypsum; magnesite; natural water; removal; Visual MINTEQ; kinetic reaction; isotherms; Freundlich; Langmuir; Arseniki; bauxite; gypsum; magnesite; maji ya asili; kuondolewa; Visual MINTEQ; misuguano ya kinetic; isotherm; Freundlich; Langmuir; Arsenik; bauxit; gips; magnesit; naturligt vatten; rening; Visual MINTEQ; kinetisk reaktion; isotermer; Freundlich; Langmuir; Mark- och vattenteknik; Land and Water Resources Engineering;

   Sammanfattning : In recent years, high arsenic (As) levels of about 300 µg/L have been reported around the gold mining areas of Geita and Mara regions within the Lake Victoria basin (LVB) in Tanzania. During a sampling campaign at Geita and Mara, the groundwater and surface water samples revealed the presence of high As concentrations as well as Fe and sulfide. LÄS MER

7. 10. Effects of the angiotensin II type 1 receptor blocker (AT₁ receptor blocker) candesartan cilexetil on systemic and renal haemodynamics in hypertensive patients

   Författare :Katarina Fridman; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : Established primary hypertension is primarily characterised by elevated peripheral resistance and an increase in renal vascular resistance. Antagonism of angiotensin II may be a particularly relevant intervention in this condition, as angiotensin II is known to act both as a powerful vasoconstrictor and as a stimulus to vascular hyperthrophy. LÄS MER