Search for dissertations about: "rubber history"

Found 4 swedish dissertations containing the words rubber history.

2. 1. Microsystem technology for microwave applications at frequencies above 100 GHz

   Author : Sofia Rahiminejad; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transitions; GHz; High frequency; RF; MEMS; Gap waveguides; Waveguide;

   Abstract : The rapid development of wireless technology today shows an increasing need forelectromagnetic components operating at even higher frequencies. Higher frequencies offer wider bandwidth, higher spatial resolution and are needed for technologies such as automotive car radars, wireless media communication and body scanners. READ MORE

4. 2. Determination of viscoelastic material properties and impact force from measurements on impacted bodies

   Author : Sven Ödeen; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

   Abstract : Methods are presented for identification of linear and nonlinear viscoelastic materials and for prediction of impact force on the basis of measurements made on impacted bodies. The complex modulus is identified from measured end-point accelerations of an impacted rod specimen, and in-situ from measured strains at three sections of a rod-like member of an impacted structure. READ MORE

5. 3. Body-ownership and visual perception

   Author : Björn van der Hoort; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : The idea that our body plays an important role in visual perception has a long history in storytelling and philosophy. Some ideas are very intuitive. For example, few will disagree with the notion that smaller people perceive the world to be bigger, and vice versa, that larger people perceive the world to be smaller. READ MORE

6. 4. Studies of the prevalence of asthma and allergy i Costa Rican school children

   Author : Manuel E. Soto-Quiros; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Asthma; rhinitis; eczema; children; prevalence; Costa Rica;

   Abstract : Objectives The main aims of our study were: To determine the prevalence and severity of asthma, rhinitis, rhinoconjuntivitis and dermatitis in school children from Costa Rica (I, IV, V) to make international comparisons and to identify possible risk factors associated with these conditions (II, III).Methods Using nationally representative samples of 9931 school children from Costa Rica during the last 10 years (from 1989 to 1998) we have performed three studies. READ MORE