Results 31 to 40 of about 11,845 (215)

Coexistence of an unstirred chemostat model with B-D functional response by fixed point index theory

open access: yesJournal of Inequalities and Applications, 2016
This paper deals with an unstirred chemostat model with the Beddington-DeAngelis functional response. First, some prior estimates for positive solutions are proved by the maximum principle and the method of upper and lower solutions.
Xiao-zhou Feng   +2 more
doaj   +1 more source

Control Factors for the Equilibrium Composition of Microbial Communities in Open Systems: Theory and Experiments

open access: yesMathematics, 2023
The present paper is a summary of the authors’ theoretical and experimental research dealing with the patterns of stable equilibrium coexistence of microbial populations in flow systems interacting through specific density-dependent growth regulators ...
Andrey Degermendzhi, Alexander Abakumov
doaj   +1 more source

Influence of growth rate on the physiological response of marine Synechococcus to phosphate limitation

open access: yesFrontiers in Microbiology, 2015
Phosphate (P) is an important nutrient potentially limiting for primary productivity, yet, we currently know little about the relationship between growth rate and physiological response to P limitation in abundant marine Cyanobacteria.
Cecilia Batmalle Kretz   +5 more
doaj   +1 more source

Nutrient-Limited Operational Strategies for the Microbial Production of Biochemicals

open access: yesMicroorganisms, 2022
Limiting an essential nutrient has a profound impact on microbial growth. The notion of growth under limited conditions was first described using simple Monod kinetics proposed in the 1940s.
Hemshikha Rajpurohit, Mark A. Eiteman
doaj   +1 more source

Analysis of biomass productivity and physiology of Nitrososphaera viennensis grown in continuous culture

open access: yesFrontiers in Microbiology, 2023
Microbial ammonia oxidation is the first and usually rate limiting step in nitrification and is therefore an important step in the global nitrogen cycle. Ammonia-oxidizing archaea (AOA) play an important role in nitrification.
Michael Melcher   +6 more
doaj   +1 more source

Automated Cell Treatment for Competence and Transformation of Escherichia coli in a High-Throughput Quasi-Turbidostat Using Microtiter Plates

open access: yesMicroorganisms, 2018
Metabolic engineering and genome editing strategies often lead to large strain libraries of a bacterial host. Nevertheless, the generation of competent cells is the basis for transformation and subsequent screening of these strains.
Sebastian Hans   +4 more
doaj   +1 more source

Continuous Bioproduction of Alginate Bacterial under Nitrogen Fixation and Nonfixation Conditions

open access: yesFermentation, 2023
Alginate is a biomaterial produced by Azotobacter vinelandii, a diazotroph that, under nitrogen-fixing conditions, can fix nitrogen under high oxygen levels. In A.
Pablo Contreras-Abara   +5 more
doaj   +1 more source

Thermodynamic Evaluation of Dual Substrate Growth

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT Various C₁–C₂ compounds are increasingly available through electrochemical reduction of CO2. Although not always suitable as a sole substrate, these compounds can supplement a primary substrate like glucose to enhance microbial growth. Yet, the mechanisms underlying the effects of dual substrate consumption on growth rate and growth yield ...
Marit A. Verheijen   +3 more
wiley   +1 more source

Chemostat manuscript dataframe

open access: yes, 2019
1) 'Chemostat Turnover and Deviation from Steady State.xlsx' - Contains all dilution rate and optical density measurements, as well as calculated volume-adjusted turnover times, inferred doubling times, and percent deviation from steady-state.
Alice Zhou (7256327)   +1 more
core   +1 more source

Fermentative Bacteria Influence the Competition between Denitrifiers and DNRA Bacteria

open access: yesFrontiers in Microbiology, 2017
Denitrification and dissimilatory reduction to ammonium (DNRA) are competing nitrate-reduction processes that entail important biogeochemical consequences for nitrogen retention/removal in natural and man-made ecosystems.
Eveline M. van den Berg   +4 more
doaj   +1 more source

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