Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 25 for “"electrogenic"”.
-
Communicating with electrogenic cells
Non-invasive and reliable communication with electrogenic cells is comprised of several techniques from dierent elds of research. Cellular signals need to be sensed and recorded utilizing extracellular recording devices with a temporal resolution that is higher than the duration of a single action …
-
Transistor arrays for the direct interfacing with electrogenic cells
… effect transistor (FET) for the coupling of electrogenic cells was presented. The design decoupled the transistor gate from the sensing area and arranged them one upon the other (sandwich design). Both parts were tuned individually: the transistors were optimised towards high transconductance …
-
Optimizing electrogenic activity from photosynthetic bacteria in bioelectrochemical systems
The aims of this project were to investigate a range of limitations affecting the electrical performance of bioelectrochemical systems (BES) and their use as analytical tools. The model cyanobacterium Synechocystis sp. PCC6803 was used to characterize light-driven BESs, or biophotovoltaic (BPV) …
-
Extracellular stimulation of individual electrogenic cells with micro-scaled electrodes
… the extracellular stimulation of individual electrogenic cells in vitro with surface-embedded microelectrodes. For this purpose, a new electrophysiological system, including devices and a versatile and customizable amplifier, was developed. The novel amplifier is comprised of a general main …
-
Design of a high density CMOS array for the bidirectional coupling with electrogenic cells
… CMOS chip for the bidirectional coupling with electrogenic cells was designed, fabricated, post-processed and successfully tested using a newly developed measurement and control system. In addition, a setup for the single cell stimulation with multi electrode arrays was developed and …
-
Design, development and evaluation of a high spatial density CMOS chip for bidirectional communication with electrogenic cells
… of the analog signals recorded from electrogenic cells, prior to their transfer to the measurement setup. The central array was flanked by 2 decoders to its left and bottom side: A row and column decoder. These digital circuits were responsible for the activation and calibration of …
-
Effects of Chronic High Sucrose With Dietary or Drinking Inclusion on the Electrogenic Glucose Absorption in the Intestinal Tract of Mice (Mus musculus)
… obesity and type-2 diabetes, on the intestinal electrogenic sodium dependent glucose transport, the first portal of entry for glucose, is unknown. Here female C57bl/6 mice fed a normal standard chow diet, and 20% sucrose in the drinking water for 8 months, or 35% sucrose inclusion in the diet …
-
The development and performance of anodic biofilms in microbial fuel cells
… and optimized applied potentials also affect electrogenic performance. <br/><br/>The type of substrate was found to have a large impact on the acclimation and performance of electrogenic biofilms. Acetate produced the highest power density of 7.2 W m 3 and butyrate the lowest at 0.29 W m"3, …
-
Soft matter engineering for cellular bioelectronic interfaces
… in- vestigation of cyanobacteria, microbes with electrogenic capabilities widely used as the biological source of anodic electrons in the development of renewable power-generation devices, known as biophotovoltaics (BPV). However, the efficiency of such devices is too low to translate into …
-
Identifying the enzyme involved in Vacuolar ATPase acetylation during doxorubicin-induced cardiotoxicity
… cardiotoxicity. Vacuolar ATPases are a family of electrogenic proton pumps present on the lysosomal membrane that create an acidic environment for proteases to degrade proteins. Our preliminary study found that acetylated Vacuolar ATPase subunit V0 D1 levels increased in doxorubicin-injected mouse …
-
Microbial Biofilm Development and Electron Transfer in Electrochemical Systems
… affect growth, development, and activity of electrogenic biofilms has great potential to improve the performance of bioelectrochemical systems such as MFCs. A combination of spectroscopic, microscopic, and electrochemical techniques was used to evaluate how electrode surface chemistry …
-
Engineering outer-membrane electron transfer proteins for modular biotic-abiotic interfacing with living cells
The electrogenic bacterium Shewanella oneidensis utilises the MtrCAB protein complex to transfer electrons across the outer membrane, forming a biotic-abiotic interface that can be harnessed for energy generation, biosensing, microbial electrosynthesis and cell signalling. Within this complex, the …
-
Electrolyte-gated graphene field-effect transistors : modeling and applications
… Lastly, graphene EGFETs fabricated for electrogenic cell sensing using the optimized parameters from the newly developed graphene EGFET current-voltage model. Hippocampal mouse neurons were cultured on top of the graphene EGFETs in attempt record action potentials.
-
Pre-, pro-, and synbiotic modulation of the intestinal microbiota stimulates enteroendocrine mediated intestinal adaptation in piglets with short-bowel syndrome
… sequencing), which was associated with increased electrogenic glucose absorption as measured ex vivo in modified Ussing chambers (R2 = 0.477, P = 0.0529). The probiotic, LGG, primarily colonized the ileal digesta where it increased total Lactobacillus (all P = 0.04). Specifically, PRO increased …
-
Molecular Cloning, In Vitro Expression, and Functional Characterization of an Ovine Gastrointestinal Peptide Transporter (oPepT1)
… from other species. The transport process is electrogenic and pH-dependent, but independent of Na+, Cl-, and Ca2+. It displayed a broad substrate specificity that transported neutral and charged dipeptides and tripeptides. All dipeptides and tripeptides examined evoked inward currents in a …
-
Substrate specificity and functional characterization of sodium/dicarboxylate cotransporters
… other members of the SLC13 family, xNaDC3 is electrogenic and exhibits inward substrate-dependent currents in the presence of sodium. However, other electrophysiological properties of xNaDC3 are unique and involve large cation-activated leak currents possibly mediated by anions. \r\n\r\nTaken …
-
Functional characterization of a putative Plasmodium falciparum calcium/hydrogen antiporter pfcha
… which is linear with time, unidirectional and electrogenic. Moreover PfCHA was inhibitable by La3+, a calcium transporter competitor, and was moderately inhibited by a sodium calcium exchanger inhibitor KB-R7943. This inhibitor showed also a moderate inhibition on parasite growth in culture. In …
-
Proton-atpase in fish gills
… conditions. Evidence for the existence of anelectrogenic proton pump in fish gills was accumulated. Branchial proton excretion rate was estimated by measuring the total CO2, total ammonia, pH and buffer capacity of the inspired and expired water of the fish. The net proton excretion across …
-
Kinetic studies of mechanism of ubiquinol:cytochrome c(2) oxidoreductase of Rhodobacter sphaeroides: A steady state approach
… defined by the modified Q-cycle model. (2d) The electrogenic step between two b-cytochromes accounts for 65%-70% of the total electric span across the membrane. (3) A complete dynamic thermodynamic profile has been established for the electron transfer chain as it approaches a steady state in …
-
Structural characterization of bacterial membrane proteins via molecular dynamics simulations and electrophysiology
… of ammonia. The transport has been shown to be electrogenic in similar orthologous proteins, but the exact mechanism has so far remained elusive. The only inner pathway that has been identified in AmtB is lined by hydrophobic amino acids and for this reason it has been proposed to carry neutral …
Page 1 of 2