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Composite Cryogels: Stationary Phase for Separation of Complex Media

Demands for efficient, economical and fast separation and purification methods for various target molecules have led to the development of new techniques and materials for bioseparation processes. Separation can be carried out in both batch and chromatographic modes. Running the separation step in a conventional chromatographic column is more efficient than batch mode, but there are some limitatio

Energitillförselmodeller för övergång till förnybar och närgenererad energi: en studie över Tjörns kommuns möjlighet att göra en energiomställning

An energy system that relies on fossil fuel is not sustainable. Emissions, such as carbon dioxide, nitric oxide and corpuscles, affect the climate and pollute the air. Furthermore, the supply of oil, coal and natural gas is located a few places worldwide, which can give rise to geopolitical conflicts for access to these areas. This is not a local issue for Tjörn, nor even a national issue for Swed

Metamorphism and Geochronology of the High Pressure Granulite and Upper Amphibolite Facies Rocks from the Southwest Swedish Granulite Region

The present thesis presents pressure-temperature and geochronological data from the high-grade mafic rocks from the Southwest Swedish Granulite Region, which forms part of the southwestern Baltic Shield. The region is characterized by variably deformed and migmatized granitic to intermediate gneisses, metabasites and charnockites metamorphosed in granulite and upper amphibolite facies. The peak m

A 103fsrms 1.32mW 50MS/s 1.25MHz Bandwidth Two-Step Flash-ΔΣ Time-to-Digital Converter for ADPLL

A 50-MS/s two-step flash-ΔΣ time-to-digital converter (TDC) using a 2-channel time-interleaved time-domain register with an implicit adder/subtractor demonstrates a 3rd order noise-shaping. The TDC is fabricated in 40-nm CMOS and consumes 1.2 mA from a 1.1 V supply. At frequencies below 1.25 MHz, the TDC error integrates to 103 fsrms, which is equal to an equivalent resolution of 1.6 ps.

Energy services and development

Increased energy efficiency at the point of end-use is a key strategy for addressing a range of energy related problems, including greenhouse gas emissions. There are energy efficiency alternatives that can be implemented at low cost,and perhaps with some cost savings – these activities offer no-regrets opportunities for climate change mitigation. In addition, high levels of end-use energy efficie