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This project designs an RF switch operating in E-band to provide a transmit path from a Class-F power amplifier (PA). The basic RF switch is based on the single-pole double-throw (SPDT) topology using shunt transistor switches and two λ/4 transmission line. The transistors used in this project are nanowire MOSFET transistors developed by the Division of Electromagnetics and Nanoelectronics, LTH, L
Growing amounts of waste generation in remote areas without proper waste management systems is a problem to human health and the environment. The Amazon holds the biggest freshwater resources in the world, is a biodiversity hotspot and its communities are placed in distances that can take days by boat to be reached. A National policy with EPR instruments requires private companies to take-back pac
Stimulation of innovation is a hot topic around the world. The developed economies are nowadays significantly dependent on innovation for further growth. One central source of innovation is universities and their ability to turn new knowledge into value-adding innovations. One of these technology transfer measures is through the creation of university spinoffs (USOs). High-tech startups, however,
Purpose: This master thesis aims at bridging the distinct notions of production and consumption by investigating how well-established consumption frameworks gain significance in the employment world. Therefore, we ask how Gen Y talents experience their jobs as commodities and act as consumers in the workplace as a reaction to this comodification. The purpose of this paper is to gain a general unde
How can a small fire at a subcontractor in the USA lead to a multimillion dollar loss at a Swedish telephone company, and how can a single machine breakdown lead to a complete production stop at a production company? With today logistics and production trends, where terms such as Lean Production, Six Sigma, 5S, and World Class Manufacturing are used every day, production companies are introducing
Popular Science Summary The aim of this thesis is to develop a method for the selective cleavage of a carbon fluorine bond with a transition metal. The main focus is directed towards the synthesis of a gemdifluoro, syn-diphosphine compound XX. When treated with iridium the metal should bind to the phosphines which keeps it close enough to the carbon fluorine bond to break it and form what is known
The competitive corporate environment of today, as marked by continuous changes and enhanced global competition, forces companies to constantly adapt their current business activities and increasingly excel. Innovation is considered a critical imperative in order to respond to these increased competitive threats. Hence, innovation ought to permeate corporate environments and their inherent busines
A rising problem within electronics today is that, since the frequencies have increased dramatically, it is now very difficult to measure signals. If a traditional probe is used, then the direct contact will destroy the signal. The general idea behind this master thesis project is to make use of the crosstalk between transmission lines to create non contact test points. This thesis aims to evaluat
Popular science summary Are aerial drones the future for wild boar crop damage surveys? The wild boars are back, and they have returned in force. This is a rather recent trend since wild boars were extinct in Sweden until the 1970s and since then they have multiplied explosively, spreading all over central and southern Sweden. Their re-appearance has led to conflicts with human interests, namel
RNA interference (RNAi) has recently been discovered in the budding yeast Saccharomyces castellii. As in other organisms, artificial RNAi could be a useful genetic tool in budding yeast, but the method needs first to be established. S. castellii is also a useful model for telomerase studies, and a knockdown of the telomerase catalytic subunit Est2p could be a new way of unrevealing its functions a
This thesis addresses many issues surrounding the simple question: why have trams? With city populations exponentially growing alongside concerns over the environment and the economy, tramways have become a resurging form of sustainable transportation for municipalities. Once an endangered transportation mode, torn up and scrapped to make room for the age of cars, tramways are phoenix artifacts of
Background: Critical needs for treatment trials in gastroesophageal reflux disease (GERD) include assessing response to treatment, evaluating symptom severity, and translation of symptom questionnaires into multiple languages. We evaluated the previously validated Reflux Disease Questionnaire (RDQ) for internal consistency, reliability, responsiveness to change during treatment and the concordance
We consider steady symmetric gravity water waves on finite depth with constant vorticity and a monotone surface profile between crests and troughs. The problem is transformed into one concerning the vertical velocity. A representation formula for the stream function in terms of the surface and the vorticity is presented, and we show that the surface can be determined from the vertical velocity.
Downscaling of microfluidic cell culture and detection devices for electrochemical monitoring has mostly focused on miniaturization of the microfluidic chips which are often designed for specific applications and therefore lack functional flexibility. We present a compact microfluidic cell culture and electrochemical analysis platform with in-built fluid handling and detection, enabling complete c
In this article an operator theoretic interpretation of the generalized Titchmarsh-Weyl coefficient for the Hydrogen atom differential expression is given. As a consequence we obtain a new expansion theorem in terms of singular generalized eigenfunctions.
Background: Many patients with cervical disc disease require leave from work, due to long-lasting, complex symptoms, including chronic pain and reduced levels of physical and psychological function. Surgery on a few segmental levels might be expected to resolve disc-specific pain and reduce neurological deficits, but not the non-specific neck pain and the frequent illness. No study has investigate
This is the first of two papers introducing a novel thermomechanical continuum constitutive model for cemented granular materials. Here, we establish the theoretical foundations of the model, and highlight its novelties. At the limit of no cement, the model is fully consistent with the original Breakage Mechanics model. An essential ingredient of the model is the use of measurable and micro-mechan
The potential microbial risk from using treated wastewater is a burning issue to be studied. In Sweden, only a small part of treated wastewater is reused directly, although water reuse could be beneficial. Disinfection is virtually never practised and no protective guidelines for water reuse are found in Sweden. Based on a 1 year monitoring programme of water quality, this paper estimates the micr
