Sökning: "Collapse"

Visar resultat 21 - 25 av 333 avhandlingar innehållade ordet Collapse.

1. 21. An X-Ray View of Core-collapse Supernovae

   Författare :Dennis Alp; Josefin Larsson; Jacco Vink; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic; Subatomic and Astrophysics; Atomär fysik; subatomär fysik och astrofysik;

   Sammanfattning : A core-collapse supernova (CCSN) is an astronomical explosion that indicates the death of a massive star. From observations, it is clear that a large fraction of all massive stars undergoes supernova (SN) explosions, but describing how SNe explode has remained a challenge for many decades. LÄS MER

3. 22. Everyday Life Information Practice : Affordances and Strategies within a Facebook Group

   Författare :Ameera Mansour; Noora Hirvonen; Högskolan i Borås; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; social media; social networking sites; Facebook groups; information practices; sociocultural theory; affordances; cognitive authority; situated learning; community of practice; communication privacy management; imagined audience; context collapse; everyday life; parents; mothers; Library and Information Science; Biblioteks- och informationsvetenskap;

   Sammanfattning : Social networking sites are integral in reshaping how we access and interact with information and others. This doctoral thesis aims to offer an in-depth understanding of engagement in an everyday life information practice within a private Facebook group. LÄS MER

4. 23. Modelling Alternative Load Paths in Platform-Framed CLT Buildings : A Finite Element Approach

   Författare :Johannes Albert Josef Huber; Mats Ekevad; Ulf Arne Girhammar; Sven Berg; Sigurdur Ormarsson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; timber; robustness; finite element method; alternative load paths; disproportionate collapse; Träteknik; Wood Science and Engineering;

   Sammanfattning : Timber has become more popular as a construction material during recent years. Engineered wood products, such as glued laminated timber and cross-laminated timber, have enabled the construction of multi-storey buildings. Tall buildings with many occupants need to resist a disproportional collapse in case of unexpected exposures, e.g. LÄS MER

5. 24. Significance of transport dynamics on concentration statistics and expected mass fraction based risk assessment in the subsurface

   Författare :Veljko Srzic; Vladimir Cvetkovic; Olaf A. Cirpka; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Local scale dispersion; Heterogeneity structure; Concentration moments; Moment collapse; Expected mass fraction;

   Sammanfattning : This thesis relies on a Langrangian framework used for conservative tracer transport simulations through 2-D heterogeneous porous media. Conducted numerical simulations enable large sets of concentration values in both spatial and temporal domains. LÄS MER

7. 25. Internal fixation of femoral neck fractures

   Författare :Leif Hernefalk; Linköpings universitet; []
   Nyckelord :Femoral neck fracture; osteotomy; internal fixation; device; technical principles; scintimetry; radiography; biomechanics; malposition; malreduction; complications; bone necrosis; revascularization; segmental collapse; non-union; elderly; osteoporosis; MEDICINE; MEDICIN;

   Sammanfattning : The incidence of femoral neck fractures in elderly people is rising requiring large health care resources. Internal fixation of the fracture is the treatment of choice in Scandinavia, but in 20-40% of the cases a late complication such as a segmental collapse of the femoral head after initial bone necrosis, or a non-union of the fracture because of non-healing, will occur. LÄS MER