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*  In vitro anticoccidial, antioxidant activities and cytotoxicity of Psidium guajava extracts.
The presence of reductants such as antioxidant substances in the samples causes reduction of the ferric to the ferrous form ... Nitric oxide radical scavenging activity is correlated to the presence of phenolic compounds [55]. There was a significant ... This observation may be an indicator of their safety as drugs for mammalian organisms. Our findings, therefore, corroborate the ... chelate metals, activate antioxidant enzymes and reduce radicals of alpha-tocopherol or to inhibit oxidases [56]. The results ...
  http://www.alliedacademies.org/articles/in-vitro-anticoccidial-antioxidant-activities-and-cytotoxicity-of-psidium-guajava-extracts-8865.html
*  AquaFit4Use - Fouling and Corrosion Parameters | Biofilm | Surfactant
e) Metal salt deposition Bacteria that deposit metal compounds can produce MIC by three different mechanisms: − − − Metal ... f) Metal reduction Ford and Mitchell (1990) have demonstrated that this type of corrosion affects mainly soft steels. fouling ... The water must not nourish the growth of micro-organisms: this means that low molecular organic compounds. bicarbonate and ... Scaling will cause significant loss of heat exchange capacity and clogging of pipes leading to mechanical defects. During ...
  https://www.scribd.com/document/109452340/AquaFit4Use-Fouling-and-Corrosion-Parameters
*  Iron-sulfur world hypothesis - Wikipedia
These organic compounds were retained on or in the mineral base as organic ligands of the transition metal centers with a flow ... Reaction of pyruvic acid or other α-keto acids with ammonia in the presence of ferrous hydroxide or in the presence of ferrous ... Russell adds a significant factor to these ideas, by pointing out that semi-permeable mackinawite (an iron sulfide mineral) and ... Proposed reaction mechanism for reduction of CO2 on FeS: Ying et al. (2007) have proved that direct transformation of ...
  https://en.wikipedia.org/wiki/Iron%E2%80%93sulfur_world_hypothesis
*  Dynamics of Microbial Community Composition and Function during In Situ Bioremediation of a Uranium-Contaminated Aquifer |...
Bioremediation of organic and metal contaminants with dissimilatory metal reduction. J. Indust. Microbiol. 14:85-93. ... sulfide or ferrous compounds) can reduce U(VI) under certain geochemical conditions (e.g., pH 6.0 to 7.0, low bicarbonate). The ... Functional population changes during active U(VI) reduction.As described above, significant functional population change ... 3 and 4B). After day 255, dsr genes from organisms like Desulfomicrobium norvegicum (14090293), an uncultured SRB (14389143), a ...
  https://aem.asm.org/content/77/11/3860?ijkey=9515008d1eea6717631b95be360f8439ae959dfe&keytype2=tf_ipsecsha
*  Mercury (element) - Wikipedia
... mercury usually forms simple stable compounds with metal-metal bonds. Most mercury(I) compounds are diamagnetic and feature the ... 6.8% from non-ferrous metal production, typically smelters. 6.4% from cement production. 3.0% from waste disposal, including ... "Mercury Reduction Act of 2003". United States. Congress. Senate. Committee on Environment and Public Works. Retrieved 6 June ... Review of its safety has found that cinnabar can lead to significant mercury intoxication when heated, consumed in overdose, or ...
  https://en.wikipedia.org/wiki/Mercury_(element)
*  In situ chemical reduction - Wikipedia
In the 1990s, Gillham, Tratnyek, Kriegman, Zhang, and Batchelor all made significant contributions in testing different metals ... The surface reactions take three different forms: direct reduction, electron shunting through ferrous iron, and reduction by ... In ISCR, reducing compounds, compounds that accept electrons given by other compounds in a reaction, are used to change the ... and use microbial organisms to enhance the reduction zone and to create a more anaerobic environment for the reactions to take ...
  https://en.wikipedia.org/wiki/In_situ_chemical_reduction
*  Composition, In Vitro Antioxidant and Antimicrobial Activities of Essential Oil and Oleoresins Obtained from Black Cumin Seeds ...
Chelating Activity on Ferrous Ions. The chelating activity of the aqueous and ethanolic extract on ferrous ions (Fe2+) was ... There was a significant difference (. ) between the control and the tested essential oil and oleoresins. As can be seen in ... p-Cymene is not an efficient antimicrobial compound when used alone, but it potentiate the activity of compounds like carvacrol ... Maximum chelating of metal ions at 200 μg mL−1 for black cumin oil and EDTA was found to be 74.56% and 87.90%, respectively, ...
  https://www.hindawi.com/journals/bmri/2014/918209/
*  Mercury regulation in the United States - Wikipedia
Mercury Reduction in the Chlor-alkali Sector: Mercury cell chlor-alkali production is a significant user of mercury and a ... non-ferrous metal industry), combustion processes (power generation, road transport) and waste incineration. It lays down ... Substances covered under the Convention: Mercury compounds including inorganic and organometallic mercury compounds. Helsinki ... All forms of mercury can accumulate in organisms. However, methylmercury is taken up at a faster rate than other forms and ...
  https://en.wikipedia.org/wiki/Mercury_regulation_in_the_United_States
*  US6709681B2 - Acidified nitrite as an antimicrobial agent - Google Patents
Nevertheless exposure to pH 2 for one hour does not kill all the organisms as there is significant growth in the nutrient broth ... The precursor for the NO2 or NO moiety may be an alkaline metal or alkaline earth metal nitrate capable of conversion to NO2 or ... after the reaction is completed there will be no unreacted compounds left. Accordingly any compounds remaining on the infected ... The NO is generated from an admixture of ferrous sulphate, an organic acid and an inorganic nitrite and caused to be reactive ...
  https://patents.google.com/patent/US6709681B2/en
*  Antioxidant properties, antimicrobial and anti-adhesive activities of DCS1 lipopeptides from Bacillus methylotrophicus DCS1 |...
The in vitro antimicrobial activity of DCS1 lipopeptides showed that they display significant antibacterial and antifungal ... Ferrous ion-chelating activity. Ferrous ion (Fe2+) is the most potent pro-oxidant among metal ions. This ion can interact with ... The reducing power of a compound may serve as a significant indicator of its potential antioxidant activity [40]. In this test ... Measurement of color reduction allows, therefore, estimating the metal chelating activity of the co-existing chelator [42]. ...
  https://bmcmicrobiol.biomedcentral.com/articles/10.1186/s12866-017-1050-2
*  Biomining - Wikipedia
These organisms secrete different organic compounds that chelate metals from the environment and bring it back to the cell ... In these conditions there is not enough Fe2+ to allow significant growth. At low pH, however, Fe2+ is much more stable. This ... The oxidation of the ferrous ion (Fe2+) to the ferric ion (Fe3+) is an energy producing reaction for some microorganisms. As ... One project recently under investigation is the use of biological methods for the reduction of sulfur in coal-cleaning ...
  https://en.wikipedia.org/wiki/Biomining
*  Nitrate - Wikipedia
Nitrites oxidize the iron atoms in hemoglobin from ferrous iron(II) to ferric iron(III), rendering it unable to carry oxygen. ... Mixtures of the molten salt are used to harden some metals. Explosives and table tennis balls are made from celluloid. Although ... Nitrites are produced by a number of species of nitrifying bacteria, and the nitrate compounds for gunpowder (see this topic ... The historical standard method of testing for nitrate is the Cadmium Reduction Method, which is reliable and accurate although ...
  https://en.wikipedia.org/wiki/Nitrate
*  Phenolic compounds as antioxidants and chemopreventive drugs from Streptomyces cellulosae strain TES17 isolated from...
The extract of Streptomyces cellulosae strain TES17 demonstrated significant antioxidant activity with percentage inhibition of ... Further identification of the compounds was done using UPLC analysis. ... produces potent compounds with antioxidant activity, further might be developed into therapeutic drugs to combat oxidative ... its TPC and TFC and this in turn was in keeping with the UPLC analysis which also revealed the presence of phenolic compounds ...
  https://bmccomplementalternmed.biomedcentral.com/articles/10.1186/s12906-018-2154-4
*  Frontiers | Ex-situ Bioremediation of U(VI) from Contaminated Mine Water Using Acidithiobacillus ferrooxidans Strains |...
Biosorption is a metabolism-independent biological process by which metal species, compounds, and particulate materials can be ... 2013). U(VI) reduction by diverse outer surface c-type cytochromes of Geobacter sulfurreducens. Appl. Environ. Microbiol. 79, ... ferrooxidans have been previously reported for ferrous ion bio-oxidation and the removal of H2S (Mazuelos et al., 2010) and ( ... However, no significant differences were found when comparing the efficiency of both strains in removing uranium from the ...
  https://www.frontiersin.org/articles/10.3389/fenvs.2016.00039/full
*  EUR-Lex - 52001DC0593 - EN - EUR-Lex
The BREF of the non-ferrous metal sector mentions the techniques for reduction of dioxin emissions in this sector, which the ... leading to a significant reduction of dioxin emissions. In response to the target set by the 5th EAP the Directive 94/67/EC on ... Key organisms, products or compartments will be selected to monitor their dioxin and PCB concentration. This will be done in ... In case of an abnormal increase in the level those compounds, sources and/or pathways of contamination have to be identified. ...
  https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:52001DC0593
*  Engineering Essentials: Hydraulic Fluids | Hydraulics & Pneumatics
Polar compounds wet the metal surface preferentially, protecting it with a film of oil. Other compounds may absorb water by ... at developing fluids that could replace oil-based hydraulic fluids at a reasonable cost and with no significant reduction in ... System rusting occurs when water carried by the fluid attacks ferrous metal parts. Most hydraulic fluids contain rust ... the test estimates the extent to which the carbon in a lubricant is converted by micro-organisms to the elements found in ...
  https://www.hydraulicspneumatics.com/200/TechZone/HydraulicFluids/Article/False/6449/TechZone-HydraulicFluids
*  The Antioxidant and Free Radical Scavenging Activities of Chlorophylls and Pheophytins
For each given natural chlorophyll compound there was no significant difference in antioxidant effect between the a and b forms ... The dose-dependent reduction in tail moment shows that fewer single stranded DNA breaks were caused by hyrdoxyl radicals when ... 20], the binding of ferrous ions to chlorophylls or pheophytins was estimated by the decrease in the peak absorbance of the Fe( ... It has been proposed that most of the hydroxyl radicals in living organisms are due to iron ion-dependent generation through ...
  http://file.scirp.org/Html/1-2700727_35234.htm
*  Hormones removal from municipal wastewater using ultrasound, AMB Express | 10.1186/s13568-018-0621-4 | DeepDyve
Also, the frequency and power of ultrasound had a significant effect on reduction efficiency of hormones while the exposure had ... 2011). Ster- which have detrimental effects on water living organisms oid hormones are endocrine-disrupting compounds in (Azimi ... Ferrous sulfate and hydrogen per- cal treatment methods and advanced treatment processes oxide were used for sample preparation ... Removal of heavy metals from industrial wastewaters: a review. ChemBioEng Reviews 4:37-59. ent and effluent at different ...
  https://www.deepdyve.com/lp/springer_journal/hormones-removal-from-municipal-wastewater-using-ultrasound-FW2Tk0SWP0
*  Biopulping industrial wood waste - Biopulping International, Inc.
The wood chips are next passed over a conveyor belt and ferrous material removed with an electromagnet. The wood chips are then ... The wood waste pulp becomes, in effect, a filler for making cheap paper where reduction in strength and quality can be ... Most preferably, the chips are exposed to atmospheric steam for a period sufficient to disable native organisms but not so long ... However, chemical processes produce a low yield of fiber and require significant waste treatment. The main chemical processes ...
  http://www.freepatentsonline.com/6402887.html
*  Methane - Wikipedia
Significant deposits of methane clathrate have been found under sediments on the ocean floors of Earth at large depths. ... Methane (US: /ˈmɛθeɪn/ or UK: /ˈmiːθeɪn/) is a chemical compound with the chemical formula CH4 (one atom of carbon and four ... Metal Ions in Life Sciences. 15. Springer. pp. 257-313. doi:10.1007/978-3-319-12415-5_7. Dozolme, Philippe. "Common Mining ... Methanogenesis is a form of anaerobic respiration used by organisms that occupy landfill, ruminants (e.g., cattle), and the ...
  https://en.wikipedia.org/wiki/Methane
*  US6908495B2 - Low oxygen organic waste bioconversion system - Google Patents
Reduction of the heavy metal content of wastewater in a biological treatment and plant therefor ... 6,068,774 relating to the addition of biological organisms such as Pseudomonas species to assimilate odor causing compounds. ... is of pleasant odor and can be safely maintained in open storage without significant migration of compounds. The process also ... Preferred metallic salts for this purpose include ferrous sulfate, ferric chloride, alum and the like which can combine with ...
  https://patents.google.com/patent/US6908495B2/en
*  Iron-sulfur world theory | Open Access articles | Open Access journals | Conference Proceedings | Editors | Authors | Reviewers...
These organic compounds were retained on or in the mineral base as organic ligands of the transition metal centers with a flow ... Reaction of pyruvic acid or other α-keto acids with ammonia in the presence of ferrous hydroxide or in the presence of ferrous ... Russell adds a significant factor to these ideas, by pointing out that semi-permeable mackinawite (an iron sulfide mineral) and ... Proposed reaction mechanism for reduction of CO2 on FeS: Ying et al. (2007) have proved that direct transformation of ...
  http://research.omicsgroup.org/index.php/Iron%E2%80%93sulfur_world_theory
*  Ozone and the Reef Aquarium, Part 1: Chemistry and Biochemistry by Randy Holmes-Farley - Reefkeeping.com
But many organisms can convert ferric ion into ferrous ion on their surfaces just as they are taking it up, so the importance ... Most organic compounds likely to be found in significant quantities in a reef aquarium will become more polar and likely less ... Still, a reduction of 50% of the living bacteria could have significant effects. The above study in the trout hatchery showed ... and other metals, bromide and iodide. It may also interact with viruses, bacteria and other organisms drawn into the chamber. ...
  http://reefkeeping.com/issues/2006-03/rhf/
*  In Vitro Antioxidant, Antibacterial, and Cytotoxic Activity and In Vivo Effect of Syngonium podophyllum and Eichhornia...
Metal Ion Chelating Activity. The chelation of ferrous ions by the extracts was estimated by the method of Dinis et al. [24] as ... FRAP assay is based on the reduction of Fe3+ to Fe2+ due to the action of antioxidants. Subsequently, the Fe2+ formed may ... Phenolic compounds have therapeutic potential against different diseases because of their antioxidant property. They are known ... values of less than 0.05 were considered significant. One-way ANOVA followed by Dunnett's Multiple Comparison Test was used to ...
  https://www.hindawi.com/journals/bmri/2014/459452/
*  Mercury (element)
5.2 Compounds of mercury(II) 5.3 Possibility of higher oxidation states 5.4 Organomercury Organomercury compounds6 ... properties 1.2 Chemical properties1.2.1 Amalgams1.3 Isotopes2 Etymology 3 History 4 Occurrence 5 Chemistry5.1 Compounds of ... from non-ferrous metal production, typically smelters. 6.4% from cement production. 3.0% from waste disposal, including ... "Mercury Reduction Act of 2003". United States. Congress. Senate. Committee on Environment and Public Works. Retrieved 6 June ...
  http://theinfolist.com/php/SummaryGet.php?FindGo=Mercury%20