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1. Arsenic and sulfur nanoparticle synthesis mimicking environmental conditions of submarine shallow-water hydrothermal vents

Author:
Durán-Toro, Vicente; Rezwan, Kurosch; Bühring, Solveig I.; Maas, Michael
Source:
Journal of environmental sciences (China) 2022 v.111 pp. 301-312
ISSN:
1001-0742
Subject:
acidification,   etc   ; arsenic; coasts; cysteine; glutathione; mineralization; models; organic matter; pH; particle size; sulfur; temperature; toxicity; China;     Show all 14 Subjects
Abstract:
... Arsenic and sulfur mineralization is a natural phenomenon occurring in hydrothermal systems where parameters like temperature and organic matter (OM) can influence the mobilization of the toxic metalloid in marine environments. In the present study we analyze the influence of temperature and OM (particularly sulfur-containing additives) on As and S precipitation based on the recent discovery of As ...
DOI:
10.1016/j.jes.2021.04.011

2. Communicating complex ocean issues: How strategically framed messages affect awareness and motivation when conveyed using narrative vs. expository language

Author:
Kolandai‐Matchett, Komathi; Armoudian, Maria; Li, Eileen
Source:
Aquatic conservation 2021 v.31 no.4 pp. 870-887
ISSN:
1052-7613
Subject:
ocean acidification,   etc   ; humans; motivation;     Show all 3 Subjects
Abstract:
... Considering the nascent stage of marine conservation communication, little is understood about how best to communicate complex issues, such as ocean acidification (OA), that are remote and invisible. Despite accumulating evidence of OA’s adverse effects on marine ecosystems and biota and subsequent consequences for human societies, it remains obscure to a majority of the public. This study compare ...
DOI:
10.1002/aqc.3484

3. Long-term thermal acclimation drives adaptive physiological adjustments of a marine gastropod to reduce sensitivity to climate change

Author:
Leung, Jonathan Y.S.; Russell, Bayden D.; Coleman, Melinda A.; Kelaher, Brendan P.; Connell, Sean D.
Source:
The Science of the total environment 2021 v.771 pp. 145208
ISSN:
0048-9697
Subject:
ocean acidification,   etc   ; ; Gastropoda; acclimation; energy; ingestion; temperature;     Show all 7 Subjects
Abstract:
... Ocean warming is predicted to challenge the persistence of a variety of marine organisms, especially when combined with ocean acidification. While temperature affects virtually all physiological processes, the extent to which thermal history mediates the adaptive capacity of marine organisms to climate change has been largely overlooked. Using populations of a marine gastropod (Turbo undulatus) wi ...
DOI:
10.1016/j.scitotenv.2021.145208

4. Insight of UV-vis spectra and atmospheric implication for the reaction of ˙OH radical towards glyphosate herbicide and its hydrates

Author:
Holtomo, Olivier; Mbigah, Manain Derrick; Nsangou, Mama; Motapon, Ousmanou
Source:
RSC advances 2021 v.11 no.27 pp. 16404-16418
ISSN:
2046-2069
Subject:
acidification,   etc   ; carbon dioxide; glyphosate; ozone; photochemistry; temperature;     Show all 6 Subjects
Abstract:
... The rate constant of the reactions of ˙OH radicals with glyphosate (GPS) and its hydrates (GPS(H₂O)ₙ₌₁–₃) were evaluated using the dual method M06-2X/6-311++G(df,p)//6-31+G(df,p) over the temperature range of 200–400 K. The results served to estimate the atmospheric lifetime along with the photochemical ozone creation potential (POCP). The calculations yielded an atmospheric lifetime of 2.34 hours ...
DOI:
10.1039/d1ra01591e

5. Enhancing synergies between action on ocean acidification and the post‐2020 global biodiversity framework

Author:
Harrould‐Kolieb, Ellycia
Source:
Conservation biology 2021 v.35 no.2 pp. 548-558
ISSN:
0888-8892
Subject:
ocean acidification,   etc   ; biodiversity; biodiversity conservation; wildlife management;     Show all 4 Subjects
Abstract:
... Ocean acidification is a substantial emergent threat to marine biodiversity and the goods and services it provides. Although efforts to address ocean acidification have been taken under the Convention on Biological Diversity (CBD), a far greater potential to do so exists by finding synergies between biodiversity conservation efforts and ocean acidification action. The ongoing process to develop a ...
DOI:
10.1111/cobi.13598

6. Hypoxia in the Persian Gulf and the Strait of Hormuz

Author:
Saleh, Abolfazl; Abtahi, Behrooz; Mirzaei, Nikoo; Chen, Chen-Tung Arthur; Ershadifar, Hamid; Ghaemi, Maryam; Hamzehpour, Ali; Abedi, Ehsan
Source:
Marine pollution bulletin 2021 v.167 pp. 112354
ISSN:
0025-326X
Subject:
acidification; ocean acidification,   etc   ; autumn; basins; hypoxia; marine pollution; oxygen; summer; Persian Gulf;     Show all 9 Subjects
Abstract:
... In this article dissolved oxygen results of research cruises through the Persian Gulf during 2018–2019 are discussed. The results showed that summer to autumn hypoxia occurred mainly at depths ≥ 50 m to the bottom. This seasonal hypoxia started in late summer reaching its greatest severity in mid-autumn with an area of 50,000 km² in the Persian Gulf. The minimum oxygen measured at the near-bottom ...
DOI:
10.1016/j.marpolbul.2021.112354

7. Antioxidant responses of the mussel Mytilus coruscus co-exposed to ocean acidification, hypoxia and warming

Author:
Khan, Fahim Ullah; Chen, Hui; Gu, Huaxin; Wang, Ting; Dupont, Sam; Kong, Hui; Shang, Yueyong; Wang, Xinghuo; Lu, Weiqun; Hu, Menghong; Wang, Youji
Source:
Marine pollution bulletin 2021 v.162 pp. 111869
ISSN:
0025-326X
Subject:
acidification; ocean acidification,   etc   ; Mytilus coruscus; antioxidants; hypoxia; marine pollution; mussels; oxygen; pH; temperature;     Show all 10 Subjects
Abstract:
... In the present study, the combined effects of pH, dissolved oxygen (DO) and temperature levels on the antioxidant responses of the mussel Mytilus coruscus were evaluated. Mussels were exposed to two pH (8.1, 7.7-acidification), two DO (6 mg L⁻¹, 2 mg L⁻¹-hypoxia) and two temperature levels (20 °C, 30 °C-warming) for 30 days. SOD, CAT, MDA, GPx, GSH, GST, TAOC, AKP, ACP, GPT, AST levels were measur ...
DOI:
10.1016/j.marpolbul.2020.111869

8. Early warning on risk development in compound lead and cadmium contaminated sites

Author:
Hou, Shu; Dong, Haochen; Du, Xiaokun; Feng, Liu
Source:
Journal of hazardous materials 2021 v.416 pp. 126174
ISSN:
0304-3894
Subject:
soil acidification,   etc   ; cadmium; lead; risk; risk assessment; soil organic matter;     Show all 6 Subjects
Abstract:
... Based on the transformation among metal fractions defined by the Tessier sequential extraction procedure and integrated risk information assessed by delayed geochemical hazard (DGH) methodology, including development paths and their burst probabilities, trigger conditions, and the contribution of each metal to risk development, an approach was proposed to provide an early warning on risk developme ...
DOI:
10.1016/j.jhazmat.2021.126174

9. Strategies for the valorisation of a protein-rich saline waste stream into polyhydroxyalkanoates (PHA)

Author:
Roibás-Rozas, Alba; Val del Rio, Angeles; Hospido, Almudena; Mosquera-Corral, Anuska
Source:
Bioresource technology 2021 v.334 pp. 124964
ISSN:
0960-8524
Subject:
acidification,   etc   ; acclimation; biomass; famine; nitrogen; oxidation; polyhydroxyalkanoates; protein content; wastewater;     Show all 9 Subjects
Abstract:
... Saline Mussels Cooking Wastewater was valorised to produce PHA with Mixed Microbial Cultures (MMC). Due to the high protein content (1.8–5.7 g CODPROT/L), PHA accumulating capacity was below 10%, so several strategies were tested. In the acidification unit, Na(HCO₃) was added, increasing protein conversion into Volatile Fatty Acids (VFA) from 10.3% to 69.2% and subsequent PHA accumulation from 6.9 ...
DOI:
10.1016/j.biortech.2021.124964

10. Surface modification of silica nanoparticles by hexarhenium anionic cluster complexes for pH-sensing and staining of cell nuclei

Author:
Khazieva, Alsu; Kholin, Kirill; Nizameev, Irek; Brylev, Konstantin; Kashnik, Ilya; Voloshina, Alexandra; Lyubina, Anna; Gubaidullin, Aidar; Daminova, Amina; Petrov, Konstantin; Mustafina, Asiya
Source:
Journal of colloid and interface science 2021 v.594 pp. 759-769
ISSN:
0021-9797
Subject:
acidification,   etc   ; cell viability; encapsulation; flow cytometry; luminescence; pH; polyethyleneimine; silica;     Show all 8 Subjects
Abstract:
... The surface deposition of luminescent anionic cluster complex [{Re₆S₈}(OH)₆]⁴⁻ advantages to the design and synthesis of composite luminescent silica nanoparticles (SNs) for intracellular imaging and sensing, while the encapsulation of the cluster units into SNs lacks for efficient luminescence. The deposition of the Re₆ clusters resulted from their assembly at the silica surface functionalized by ...
DOI:
10.1016/j.jcis.2021.03.082

11. Durability enhancement of proton exchange membrane fuel cells by ferrocyanide or ferricyanide additives

Author:
Liu, Xin; Li, Yi; Li, Mengyuan; Xie, Na; Zhang, Junfeng; Qin, Yanzhou; Yin, Yan; Guiver, Michael D.
Source:
Journal of membrane science 2021 v.629 pp. 119282
ISSN:
0376-7388
Subject:
acidification,   etc   ; antioxidants; durability; ferricyanides; hydrogen; ionization; ligands; oxidative stability; polymers;     Show all 9 Subjects
Abstract:
... The chemical stability of proton exchange membranes (PEMs) is a pivotal factor to effectuate reliable and practical durability in proton exchange membrane fuel cells (PEMFCs). Recently, we discovered unexpectedly robust chemical stability of PEMs, which was demonstrated to be attributable to the radical scavenging ability of the ferrocyanide‒ferricyanide (Fc (II)‒Fc (III)) redox cycle. In these pr ...
DOI:
10.1016/j.memsci.2021.119282

12. Dissolution of wood components during hot water extraction of birch

Author:
Wojtasz-Mucha, Joanna; Hasani, Merima; Theliander, Hans
Source:
Wood science and technology 2021 v.55 no.3 pp. 811-835
ISSN:
0043-7719
Subject:
acidification,   etc   ; Betula; autohydrolysis; freshwater; hemicellulose; paper pulp; surface area; wood;     Show all 8 Subjects
Abstract:
... Autohydrolysis-based pretreatments enable extraction of hemicellulose from wood tissue prior to the paper pulp cooking processes enabling their further use as platform chemicals and in material applications. In this study, hot water extraction of birch meal was conducted in a small flow-through system. The combination of high surface area of the milled material with increased driving force induced ...
DOI:
10.1007/s00226-021-01283-9

13. Chemically Triggered Coalescence and Reactivity of Droplet Fibers

Author:
Zhao, Jing; Pan, Zehao; Snyder, Deborah; Stone, Howard A.; Emrick, Todd
Source:
Journal of the American Chemical Society 2021 v.143 no.14 pp. 5558-5564
ISSN:
1520-5126
Subject:
acidification,   etc   ; composite polymers; crosslinking; droplets; extrusion; hydrophilicity; protonation; zwitterions;     Show all 8 Subjects
Abstract:
... We describe the role of functional polymer surfactants in the construction and triggered collapse of droplet-based fibers and the use of these macroscopic supracolloidal structures for reagent compartmentalization. Copolymer surfactants containing both zwitterionic and tertiary amine pendent groups were synthesized for stabilization of oil-in-water droplets, in which the self-adherent properties o ...
DOI:
10.1021/jacs.1c02576

14. Acid‐induced aggregation and gelation of heat‐treated chia proteins

Author:
López, Débora N.; Ingrassia, Romina; Busti, Pablo; Wagner, Jorge; Boeris, Valeria; Spelzini, Darío
Source:
International journal of food science & technology 2021 v.56 no.4 pp. 1641-1648
ISSN:
0950-5423
Subject:
acidification,   etc   ; Salvia hispanica; cold; food science; gelation; heat treatment; pH;     Show all 7 Subjects
Abstract:
... This work studied for the first time the acid‐induced aggregation and gelation of heat‐treated chia protein isolates obtained by extraction at pH 10 or 12 (CPI10 and CPI12, respectively). The aggregation state of proteins was modified during acidification. The size of the aggregates was reduced for both samples when the pH decreased but below pH 4.5 further protein aggregation took place for CPI12 ...
DOI:
10.1111/ijfs.14784

15. Calcification does not necessarily protect articulated coralline algae from urchin grazing

Author:
Martone, Patrick T.; Schipper, Soren R.; Froese, Tyrel; Bretner, Janessa; DeMong, Alexis; Eastham, Tao M.
Source:
Journal of experimental marine biology and ecology 2021 v.537 pp. 151513
ISSN:
0022-0981
Subject:
ocean acidification,   etc   ; Calliarthron; Corallina; algae; calcification; calcium carbonate; herbivores; thallus;     Show all 8 Subjects
Abstract:
... Calcification is widely thought to be an adaptation that reduces the impact of herbivory. Recent work has shown that ocean acidification may negatively impact calcification of marine organisms, including coralline red algae, which could theoretically increase the susceptibility of corallines to benthic grazers. By manipulating calcium carbonate content of three articulated coralline algal species, ...
DOI:
10.1016/j.jembe.2021.151513

16. Efficacy of magnetite (Fe3O4) nanoparticles for enhancing solid-state anaerobic co-digestion: Focus on reactor performance and retention time

Author:
Ajayi-Banji, A.A.; Rahman, S.
Source:
Bioresource technology 2021 v.324 pp. 124670
ISSN:
0960-8524
Subject:
acidification,   etc   ; anaerobic digestion; biotransformation; hemicellulose; magnetite; methane production; microbial communities;     Show all 7 Subjects
Abstract:
... The influence of magnetite nanoparticle (nFe₃O₄) concentrations (20, 50, and 75 mg/L) on reactor performance and retention time was investigated for the first time in an initially upset solid-state anaerobic batch (SSAB) reactor. nFe₃O₄ mitigated acidification threat, enhanced reactor stability, ensured rapid volatile fatty acids bioconversion, and modified microbial community. The impacts reduced ...
DOI:
10.1016/j.biortech.2021.124670

17. The effect of counter-ion substitution on poly(phthalazinone ether ketone) amphoteric ion exchange membranes for vanadium redox flow battery

Author:
Chen, Yuning; Zhang, Shouhai; Liu, Qian; Jian, Xigao
Source:
Journal of membrane science 2021 v.620 pp. 118816
ISSN:
0376-7388
Subject:
acidification,   etc   ; amination; batteries; bromination; ion exchange; permeability; vanadium; water content;     Show all 8 Subjects
Abstract:
... The study proposed a novel method to prepare poly(phthalazinone ether ketone) amphoteric ion exchange membranes (Q/S-M) with both increased efficiency and chemical stability for vanadium redox flow battery (VRB) applications. Q/S-M membranes were obtained after the successive amination and acidification process of blend base membranes prepared from brominated poly(phthalazinone ether ketone) (BPPE ...
DOI:
10.1016/j.memsci.2020.118816

18. A toolbox for visualizing trends in large-scale environmental data

Author:
von Brömssen, Claudia; Betnér, Staffan; Fölster, Jens; Eklöf, Karin
Source:
Environmental modelling & software 2021 v.136 pp. 104949
ISSN:
1364-8152
Subject:
acidification,   etc   ; computer software; regression analysis; riparian areas; time series analysis;     Show all 5 Subjects
Abstract:
... Generalized additive models are increasingly used to identify and describe environmental trends. A major advantage of these models, as compared to simpler statistical tools such as linear regression or Mann-Kendall tests, is that they provide estimates of prevailing levels and trend magnitudes at any given point in time instead of an overall measure. For multiple time series, this versatility has ...
DOI:
10.1016/j.envsoft.2020.104949

19. Characterization of the gelation and resulting network of a mixed-protein gel derived from sodium caseinate and ovalbumin in the presence of glucono-δ-lactone

Author:
Yuno-Ohta, Naoko; Shimonomura, Naoya; Hoshi, Yuuka; Leocmach, Mathieu; Hori, Koichi; Ohta, Hiroyuki
Source:
Colloids and surfaces 2021 v.198 pp. 111472
ISSN:
0927-7765
Subject:
acidification,   etc   ; gelation; gels; ovalbumin; porosity; sodium caseinate; spectroscopy; ultrasonics; viscoelasticity;     Show all 9 Subjects
Abstract:
... We investigated mixed-protein gels made from sodium caseinate and ovalbumin at different ratios with use of the acidification agent glucono-δ-lactone. Dynamic viscoelastic measurements revealed that increasing the ovalbumin content decreased the mechanical properties of the gel but accelerated onset time of the phase transition. Ultrasound spectroscopy during gelation revealed that the relative ve ...
DOI:
10.1016/j.colsurfb.2020.111472

20. C–O cleavage via InIII alkoxide intermediates: In situ 13C NMR analysis of the mechanism of an enantioselective in-mediated cyclopropanation reaction

Author:
Slaughter, Jennifer L.; Lloyd-Jones, Guy C.
Source:
Tetrahedron 2021 v.78 pp. 131786
ISSN:
0040-4020
Subject:
acidification,   etc   ; allylation; cations; enantioselectivity; indium; mass spectrometry; oxygen; protonation;     Show all 8 Subjects
Abstract:
... The mechanism of asymmetric cyclopropanation of dibenzylideneacetone and benzylideneacetone by in situ generated allyl indium reagents in the presence of methyl mandelate as a chiral modifier has been studied by in situ ¹³C{¹H} NMR in conjunction with ¹³C/²H labelling and mass spectrometry. Two indium alkoxides were identified, the first arising from indium mediated allylation of the ketone, the s ...
DOI:
10.1016/j.tet.2020.131786