Sökning: "Biosensors"

Visar resultat 11 - 15 av 46 uppsatser innehållade ordet Biosensors.

1. 11. Långtidsbevaring av arkeologiska träkonstruktioner i en terrester miljö – fallstudie Kronholmskoggen

   Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

   Författare :Sara Hardselius; [2020-08-05]
   Nyckelord :In situ preservation; microbial decay; waterlogged wood;

   Sammanfattning : Larger archaeological wooden objects such as a shipwreck are expensive to excavate and preserve. In the past, archaeological wood material has been abandoned or even burned due to lack of sufficient economic resources. There has been an increased interest in preserving archaeological wood as a source of historical information. LÄS MER

3. 12. Biosensor based on immobilized amine transaminase for detection of amphetamine

   Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Clara Öh; [2020]
   Nyckelord :amine transaminases ATA ; enzyme immobilization; biosensor; covalent immobilization; ionic immobilization; amphetamine; histidine-tagged enzyme; Poly methyl methacrylate PMMA ;

   Sammanfattning : Amine transaminases (ATA) catalyse the transfer of an amino group from one molecule and replaces a ketone or aldehyde with the amino group, the amino group on the amino-donor is replaced with a ketone or aldehyde. This enzyme, ATA from Chromobacterium violaceum, has previously been used to catalyse the reaction involving amphetamine, therefore, it might be possible to use this enzyme to convert amphetamine and the product absorbs in the UV spectrum and can therefore be measured spectrophotometrically. LÄS MER

4. 13. A PORTABLE SYSTEM FOR PLASMONIC NANOCHIP FLUORESCENCE MEASUREMENTS

   Kandidat-uppsats, Umeå universitet/Institutionen för fysik

   Författare :Lin Zhang; [2020]
   Nyckelord :;

   Sammanfattning : In demand for early and accurate diagnosis, plasmonic-based biosensors have emerged as an attractive solution that can achieve rapid, real-time, and label-free detection of various biomarkers. In this project, a portable system for fluorescence measurements based on plasmonic nanochip was demonstrated. LÄS MER

5. 14. Evaluating Sugar Signaling during Xylose Oxidation in Saccharomyces cerevisiae

   Master-uppsats, Lunds universitet/Teknisk mikrobiologi

   Författare :Viktor Persson; [2020]
   Nyckelord :Saccharomyces cerevisiae; yeast; xylose oxidation; sugar signaling; biosensor; applied microbiology; teknisk mikrobiologi; Technology and Engineering;

   Sammanfattning : The sugar signaling state of cells oxidizing xylose was investigated through the chromosomal integration of the Weimberg pathway into previously established biosensor strains capable of monitoring the Snf3p/Rgt2p, SNF1/Mig1p, and cAMP/PKA pathways through the expression of HXT1, SUC2, and TPS1, respectively. Ultimately, two new strains were successfully developed containing both the Weimberg pathway and a biosensor for either HXT1 (TMB CB 112) or TPS1 (TMB CB 117). LÄS MER

7. 15. System Model of an Ultra-LowPower Fluorescence Detection Micro-Device

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System

   Författare :Yuanyuan Xue; [2020]
   Nyckelord :;

   Sammanfattning : This thesis aims to explore the power consumption limits of Complementary Metal-Oxide-Semiconductor (CMOS) fluorescent biosensors that meet the demand, a Matlab-based calculator is designed, in which users can input required system parameters (such as LED power and noise) to observe the minimum power consumption of each basic component and the constraints of the transimpedance amplifier: cut-off frequency, signal- to-noise ratio, dynamic range, etc. Thereby to provide a reference range for the next level designs of each component in the detection system. LÄS MER