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Showing 1 to 20 of 270 for “"Bicarbonate"”.
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Distal tubule bicarbonate reabsorption.
… to elucidate certain aspects of the control of bicarbonate reabsorption in the surface distal tubule of rats made acidotic by ammonium chloride treatment. During acute metabolic acidosis, the effects of sodium delivery, water reabsorption, inhibition of carbonic anhydrase, and addition of the …
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Regulation of duodenal mucosal bicarbonate secretion
… research studied the regulation of duodenal bicarbonate secretion in the anaesthetized guinea-pig, using a model that permitted the study of active transport of bicarbonate. It was determined that dibutyryl 3' ,5'-cyclic adenosine monophosphate, vasoactive intestinal polypeptide, …
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The Bicarbonate Ion and Photosynthetic Oxygen Evolution
Made available in DSpace on 2015-05-14T14:57:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7511547.PDF: 2794550 bytes, checksum: f66cdd863e1bc04a3001e322e1931def (MD5) Previous issue date: 1974
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Mechanisms For Bicarbonate-Mediated Virulence In vibrio Cholerae
… of bile. Conversely, the positive effector, bicarbonate, enhances ToxT activity. These positive and negative effectors provide in vivo signals to the bacterium to initiate transcription of virulence genes in the appropriate location. This dissertation is focused on identifying the molecular …
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Development of an Analytical Method for Distinguishing Ammonium Bicarbonate from the Products of an Aqueous Ammonia Co2 Scrubber and the Characterization of Ammonium Bicarbonate
… an inexpensive nitrogen fertilizer, ammonium bicarbonate (ABC) has been thought as a feasible approach to CO2 sequestration. Due to the different concentrations of reactants and reaction conditions, different carbon-ammonium composites can be produced. In view of achieving a maximum of NH3 …
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The crystal structures of sodium bicarbonate, propionic acid and valeric acid
… able to determine the gross structure of sodium bicarbonate, his assumptions preclude any conclusions to be drawn concerning the nature of the carbonate group itself. It is therefore the purpose of this paper to reinvestigate the sodium bicarbonate structure employing modern Weissenberg …
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Bicarbonate Reversible Anionic Inhibition of the Quinone Reductase in Photosystem II
The HCO$\sb3\sp-$ anion regulates photosynthetic electron transport from H$\sb2$O to a Hill oxidant. HCO$\sb3\sp-$ depletion in the presence of inhibitory anions depresses the electron transport rates by as much as ten-fold. All the inhibitory effects of HCO$\sb3\sp-$ removal were found to be …
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Role of Bicarbonate and of Manganese in Photosystem Ii Reactions of Photosynthesis
… the reducing side of Photosystem II, the role of bicarbonate ion on electron transport from Photosystem II to Photosystem I was established and on the oxidizing side studies were carried out to examine the involvement of manganese in oxygen evolution.
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Bicarbonate trigger in mixed culture of algae increases carbohydrate content of biomass
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Design and prototype of an external quality assurance program for urine bicarbonate
… a Beckman-Coulter DxC(R) assay for total bicarbonate in urine and then proceeds to design, prototype and cost an inter-laboratory comparison (ILC) program for the above urine bicarbonate based on the validation. Furthermore, this work serves as a case study for how to establish proficiency …
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Offering sodium bentonite and sodium bicarbonate free-choice to lactating dairy cattle
… intake of sodium bentonite and sodium bicarbonate on physiological and production parameters. Eight Jerseys and seventeen Holsteins (four fistulated) were randomly assigned to two groups to equalize stage of lactation, age and production history. Two diets were fed: diet 1 without added …
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The Mechanism of Bicarbonate Activation of Plastoquinone Reduction in Photosystem II of Photosynthesis
Bicarbonate (HCO$\sb{3}\sp{-}$) is required for photosystem II (PS II) electron transport. Depleting thylakoids of HCO$\sb{3}\sp{-}$ slows down electron transfer from the primary quinone acceptor Q$\sb{\rm A}$ to the secondary quinone acceptor Q$\sb{\rm B}$. It also blocks electron transfer from …
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The effects of bicarbonate and mineral surfaces on uranium immobilization under anaerobic conditions
For four decades, from 1940 through 1980, the U.S. Department of Energy (DoE) extensively mined and processed uranium at various sites. As a result, widespread uranium contamination exists in subsurface sediments and aquifers. In subsurface environments, uranium primarily exists as U(VI) or U(IV), …
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Monitoring the Stability of Anaerobic Digestion Using a Novel On-line Bicarbonate Alkalinity Monitor
In many biological reactors' bicarbonate ions are the major species determining pH buffering capacity, or alkalinity. In anaerobic digesters the bicarbonate levels should be within 10 to 50mM to ensure stable operation. Bicarbonate concentration in wastewater treatment processes is routinely …
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On the leaching behavior of uranium-bearing resources in carbonate-bicarbonate solution by gaseous oxidants
Uranium is recognized to be a critical commodity in the context of satisfying the global energy-demands for the twenty-first century and beyond. In 2013, a significant supply gap of 17% between worldwide production and consumption of uranium was identified. Consequently, low-grade uranium-bearing …
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The Effects of a Combined Supplementation of Creatine and Sodium Bicarbonate on Repeated Sprint Performance
… Combined Supplementation of Creatine and Sodium Bicarbonate on Repeated Sprint Performance James Jeremy Barber There is well-established research that suggests both creatine and sodium bicarbonate are effective ergogenic aids. However, only one published study has examined the combined effects of …
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Effects of amino acid residue substitutions on bicarbonate function in the plastoquinone reductase in cyanobacteria
… of higher plants and algae depleted of bicarbonate while no such inhibition has been observed in photosynthetic bacteria. It was observed in this study that a more than four fold stimulation of the Hill reaction by 5 mM bicarbonate and a significant reversible slowing of oxidation of …
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Characterising cyanobacterial and algal bicarbonate transporters using heterologous systems; exploring relationships between sequence, structure and function
… carbon dioxide concentrating mechanisms (CCMs). Bicarbonate (HCO3-) transporters facilitate accumulation of intracellular HCO3- which diffuses into micro-compartments (carboxysomes) where the enzyme Rubisco is housed. Within the carboxysomes, carbonic anhydrase (CA) interconverts HCO3- and CO2, …
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Characterising cyanobacterial and algal bicarbonate transporters using heterologous systems; exploring relationships between sequence, structure and function
… carbon dioxide concentrating mechanisms (CCMs). Bicarbonate (HCO3-) transporters facilitate accumulation of intracellular HCO3- which diffuses into micro-compartments (carboxysomes) where the enzyme Rubisco is housed. Within the carboxysomes, carbonic anhydrase (CA) interconverts HCO3- and CO2, …
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