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Since 90% of the polymer injected found would be back produced and flow into the pipelines together with the hydrocarbonu2019s fluids, the polymer injected fluids will be backfilled and flow into the pipelines during enhanced oil recovery efforts, oil and gas operators became concerned. A research has been done to improve the knowledge of how HPAM polymer affects MIC bacteria growth, as well as raising the MIC rates. The experimental studies began with bacteria culture in an antibiotic bottle where their culture media were divided into three groups, i. e. The coupons will be tested under scanning electron microscopy to see their surface morphology, and then measure their pit depths under infinite focus microscope to determine their pit rate. Localized corrosion has been characterized as localized corrosion, according to the report that the MIC in the presence of HPAM is characterized as localized corrosion.
Source link: https://doi.org/10.1007/978-981-19-1851-3_16
Scientists have changed the way scientists manufacture new biomolecules that are not found in nature thanks to Darwin's evolution. In E. coli, we describe a novel strategy for the directed evolution of a far-red fluorescent protein. For a second small-molecule fluorophore, biliverdin, the new strategy used genes to produce fluorophores inside E. coli and allowed for the modification of the native fluorophore, phycocyanobilin. Lastly, the evolution selected fluorescent proteins that appeared in large amounts in E. coli were discovered by evolution. The evolved fluorescent protein was named the little ultra-red fluorescent protein by the small fluorescent protein, and it was biophysically as brilliant as the expanded green fluorescent protein.
Source link: https://doi.org/10.1007/978-1-0716-2667-2_4
In this report, Bacillus subtilus bacteria's effect on crack cracking, compressive strength regained, sorptivity, water absorption, impact strength, and concrete microstructures was investigated. Water content was completely replaced with three different percentages of healing agent for bacteria-incorporated specimens. BC 1, BC 2, and BC 3 were mixed with a 10, 20, 30% bacterial solution and 90, 80% nutrient solution in a standardized solution with bacillus subtilis bacterial concentration of 10–5 cells/ml and 90, 80% nutrient solution. The cast specimens were immersed in water for 24 hours and then left at room temperature for another 24 hours in the wet-dry cycle, which was repeated for 28 days. However, the curing water was tested every 24 h to ensure that the bacteria had enough oxygen to precipitate calcium carbonate. The micro-structural morphology and calcium carbonate precipitation are shown by SEM and XRD findings.
Source link: https://doi.org/10.1007/978-981-19-1862-9_36
Certain amounts of CO_2 gas are present in the pipeline system environment, which is used to transport oil and gas. With the presence of sulphate-reducing bacteria, this research investigates the carbon steel surface characterisation in a CO_2 environment. Sulphur presence on metal specimens exposed to SRB in CO_2 environments that favor the formation of a FeS layer was confirmed by FESEM's report. In samples exposed to the SRB, the XRD test confirmed FeS formation.
Source link: https://doi.org/10.1007/978-981-19-1851-3_3
Aleurodicus rugoem feeder of ava, Aleurodicus rugoem Martin, is a native phloem feeder of ava. Seven different bacteria growth media were identified in the present study, including Nutrient Agar, Luria Bertani agar, MacConkey agar, R2A agar, and MRS agar. The nine bacterial isolates from the second nymphal stage of rugose spiralling whitefly were classified by the present study. Bacillus genus alone is identified with rugose spiralling whitefly, including Bacillus albus, Bacillus tequilensis, and Bacillus altitudinis, according to the 16S rRNA gene sequencing results, revealing Bacillus genus alone.
Source link: https://doi.org/10.1007/s13355-022-00791-9
U2014: AUGTION u2014: The legume-Rizobium symbiosis is a rare natural phenomenon that contributes to the availability of a legume plant with mineral nitrogen fixated from the atmosphere. We investigated the effect of the macrosymbiont vegetation stage on the composition of its root nodule bacteria and carried out the characterization of these microbial communities in the present study, using the perennial leguminous plant Lotus corniculatus L. as an example. In the communities that were emerging at the start of L. corniculatus vegetation, the highest microbial genetic diversity was found. The nitrogen-fixing reaction revealed the highest microbial strains isolated from the root nodules collected in the early stages of the macrosymbiont evolution, although less in strains isolated at the end of vegetation.
Source link: https://doi.org/10.1134/S0026261722601154
Bacteriocins are ribosomally synthesized antimicrobial peptides that have long been used in the food industry. With the advancements in drug resistance mechanisms, it's imperative to search for alternatives to conventional approaches. Accordingly, the benefits of bacteriocin over antibiotics must be considered in order to establish a scientific basis for their use. Bacteriocins from lactic acid bacteria are being tested as control agents for bacterial and viral infections; they can prevent biofilm formation and be useful as condoms. Bioengineered peptides have shown increased activity, implying a lack of knowledge about these bacteriocins. We have a variety of Gram-positive LAB bacteriocins with their origins and mechanism of action in this article. Recent advancements in screening and purification technologies have been reviewed, with a focus on their potential clinical applications.
Source link: https://doi.org/10.1007/s12010-022-03870-3
The aim of this study is to investigate the degradation of methylene blue by using heterogeneous catalysts based on titanate nanotubes doped with silver nanoparticles. The titanate nanotubes are made by the hydrothermal process, but doping of the silver species is carried out by impregnation at different silver contents is carried out. The characterization of the obtained materials has led to the conclusion that silver nanoparticles of the order of 2 nm are distributed on the surface of TNTs in a homogeneous manner.
Source link: https://doi.org/10.1007/s11144-022-02267-x
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