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Red/far‐red light‐sensing bacteriophytochrome photoreceptor (BphP) pathways play key roles in bacterial physiology and ecology. These bilin‐binding proteins photoswitch between two states, Pr (red absorbing) and Pfr (far‐red absorbing). The isomerization of the chromophore and the downstream structural changes result in the light signal transduction. The agricultural pathogen Xanthomonas campestris...
The cyanobacterium Spirulina platensis is a source of pigments, such as phycocyanin, which is used in the food, cosmetic and pharmaceutical industries. The thermal degradation kinetics of the liquid extract at pH values of 5, 6 and 7 was studied, evaluating its stability between 50 and 65°C. The kinetic model was assumed and validated as being of the first order. Between 50 and 55°C the extract was...
Audio processing and especially MP3 decoding is usually implemented by software due to the complexity of its hardware alternative. This work proposes a hardware solution to one of the most critical parts of an MP3 decoder, the polyphase filter bank. The aim is to improve its operation rate while saving power. The proposal takes advantage of the DSP-oriented architecture of modern FPGAs. Sequential...
MP3 decoding is usually implemented in the software due to the complexity of its hardware solution. The aim of this work is the hardware implementation of the polyphase filter bank, the most computationally intensive operation in the MP3 decoder, in order to improve the decoder operation speed while saving power. The Altera's Stratix EP1S10F780C6ES FPGA has been used as hardware support taking advantage...
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