Search for dissertations about: "A5 1"
Showing result 1 - 5 of 15 swedish dissertations containing the words A5 1.
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1. On LFSR based Stream Ciphers - analysis and design
Abstract : Stream ciphers are cryptographic primitives used to ensure privacy in digital communication. In this thesis we focus on stream ciphers built using Linear Feedback Shift Registers (LFSRs). Several different stream ciphers are analysed and new attacks are presented. In addition, two new stream ciphers are presented, both based on the same design. READ MORE
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2. Some Words on Cryptanalysis of Stream Ciphers
Abstract : In the world of cryptography, stream ciphers are known as primitives used to ensure privacy over a communication channel. One common way to build a stream cipher is to use a keystream generator to produce a pseudo-random sequence of symbols. READ MORE
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3. Development of a Sel-tag for multimodality imaging and studies of mammalian thioredoxin reductase 1
Abstract : Selenocysteine (Sec; U in one-letter code), the 21st amino acid existing in all selenoproteins, has unique biochemical properties due to its selenium atom, including a low pKa and a high reactivity with many electrophilic agents. When a selenoprotein is translated, the insertion of Sec occurs at a UGA codon, normally yielding translational termination. READ MORE
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4. The role of mTor in the pathogenesis of tau-related pathologies in Alzheimer disease
Abstract : An important neurophathological hallmark of Alzheimer disease (AD) is the progressive formation of neurofibrillary tangles composed of aberrant hyperphosphorylated tau aggregates. Evidence from human postmortem AD brains and in vitro and in vivo rapamycin-treated drug models implicated an abnormal accumulation of the mammalian target of rapamycin (mTor) in AD brains. READ MORE
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5. Short and long-term effects of exposure to low dose and low dose rate of gamma radiation : using in vitro and in vivo models
Abstract : Assessment of human health risks from exposure to ionizing radiation (IR) is mainly based on the extrapolation of results from epidemiological studies on populations exposed to relatively high doses and often at high dose rates (HDR). Risk estimates after exposure to low doses and in particular at low dose rates (LDR) remain controversial due to a lack of epidemiological evidence. READ MORE