Sökning: "velocity diffusion coefficient"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden velocity diffusion coefficient.

1. 1. Characterisation of Urban Rainfall in Kuala Lumpur, Malaysia

   Författare :Mohamed Nor bin Desa Mohamed; Avdelningen för Teknisk vattenresurslära; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; geographical and geological engineering; Hydrogeology; velocity; vector; monsoon; Malaysia; thunderstorm; Hydrogeologi; teknisk geologi; teknisk geografi; Geophysics; physical oceanography; meteorology; Geofysik; fysisk oceanografi; meteorologi;

   Sammanfattning : Rainfall characteristics of Kuala Lumpur, Malaysia, are studied in space and time; on a large scale, 550 km2, and long term scale to find out the monsoon influence, and on urban basin scale, 23 km2, to determine dynamic properties of rainfalls and spatial correlations, and on a point scale to determine the probabilities of very high rain intensities. The importance of spatial and temporal variability of rainfall was investigated applying cross correlation on long term historical rainfalls from Kuala Lumpur, Malaysia. LÄS MER

3. 2. Nonlinear gyrokinetics and microinstabilities in fluid and kinetic descriptions

   Författare :Martin Liljeström; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; two fluid model; kinetic model; drift modes; Gyrokinetics; velocity diffusion coefficient; nonlinear mode coupling; fishbone instability; particle and energy transport;

   Sammanfattning : .... LÄS MER

4. 3. Development of an integrated neutronic/thermal-hydraulic tool for estimating fluctuations in PWRs

   Författare :Viktor Larsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diffusion theory; Fluctuations; Neutron noise; Coupled calculations; P1 theory Analytical Nodal Method;

   Sammanfattning : Monitoring and diagnostics of a reactor core at a given state is very important for detecting potential problems and anomalies at an early stage. Several methods exist for these purposes, but the majority of them require a disruption of the plant operation, e.g. by shut-down or by perturbation of the system. LÄS MER

5. 4. Synthesis and Characterization of ZnO Nanostructures

   Författare :Li Li Yang; Qingxiang Zhao; Magnus Willander; Jinghai Yang; Noel Magnea; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zinc oxide; nanostructures; heterostructures; controllable growth; optical properties; postannealing; diffusion coefficient; Semiconductor physics; Halvledarfysik;

   Sammanfattning : One-dimensional ZnO nanostructures have great potential applications in the fields of optoelectronic and sensor devices.  Therefore, it is very important to realize the controllable growth of one-dimensional ZnO nanostructures and investigate their properties. LÄS MER

7. 5. Resection of colorectal liver metastases - Impact of preoperative chemotherapy

   Författare :Sam Eriksson; Lund Kirurgi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Colorectal liver metastases; Preoperative chemotherapy; Liver resection; Hepatic microcirculation; Sarcopenia;

   Sammanfattning : Background Colorectal cancer is a leading cause of cancer related death worldwide. 20-30 % of patients will develop colorectal liver metastases (CRLMs). Surgical resection is the mainstay of treatment for CRLMs, and is often combined with perioperative chemotherapy, which can prolong progression-free survival after resection. LÄS MER