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Journal articles on the topic 'Acidic environment'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Li, Liangyong, Juntong Wang, and Tianxiang Peng. "The Influence of pH Environments on the Long-Term Durability of Coir Fiber-Reinforced Epoxy Resin Composites." Sustainability 17, no. 1 (2025): 364. https://doi.org/10.3390/su17010364.

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This study investigates the effects of different pH environments on the durability of coir fiber-reinforced epoxy resin composites (CFRERCs). The CFRERCs were prepared by combining alkali-treated coir fibers with epoxy resin and exposing them to acidic, alkaline, pure water, and seawater environments for a 12-month corrosion test. The results show that an alkaline environment has the most significant impact on the tensile strength of CFRERCs, with a 55.06% reduction after 12 months. The acidic environment causes a 44.87% decrease in strength. In contrast, tensile strength decreases by 32.98% a

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Sunujaya, Muhammad Alim, Agoes Soehardjono, and Devi Nuralinah. "Effect of pH Variations in Water Immersion on Concrete Compressive and Tensile Strength." Rekayasa Sipil 19, no. 2 (2025): 160–68. https://doi.org/10.21776/ub.rekayasasipil.2025.019.02.4.

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Chemical elements, especially acids, can gradually cause concrete to deteriorate. When concrete deteriorates, the bond between the cement paste and aggregates weakens, decreasing compressive strength. This study aims to analyze the influence of pH levels on concrete's compressive and tensile strength. Concrete specimens with characteristic compressive strengths of 20, 25, and 30 MPa were immersed in solutions with pH levels of 4 (acidic), 7 (neutral), and 10 (alkaline) for 28 days. These study results are from experiments conducted at Brawijaya University, Malang. The results showed that an ac

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Nikolaychuk, P. A. "Determination of Partial Reaction Orders of the Reduction of Potassium Permanganate by Ethanol in Various Environments." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 3 (108) (June 2023): 118–30. http://dx.doi.org/10.18698/1812-3368-2023-3-118-130.

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A spectrophotometric kinetic study of the reaction of the potassium permanganate reduction by excess ethanol in acidic, neutral and alkaline environments was performed. The reaction mixtures were prepared from the solutions of potassium permanganate of different concentrations (0.0004, 0.001 and 0.002 М) and either the solutions of sulphuric acid (1, 3 and 10 %), water, or the solutions of sodium hydroxide (0.01, 0.04 and 0.1 М). The kinetic curves were recorded with the spectrophotometer at the wavelengths of 525 nm (in acidic environment), 400 nm (in neutral environment) and 605 nm (in alkal

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4

Acero, Patricia, Jordi Cama, and Carlos Ayora. "Sphalerite dissolution kinetics in acidic environment." Applied Geochemistry 22, no. 9 (2007): 1872–83. http://dx.doi.org/10.1016/j.apgeochem.2007.03.051.

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5

Schmid, J. A. "The acidic environment in endocytic compartments." Biochemical Journal 303, no. 2 (1994): 679–80. http://dx.doi.org/10.1042/bj3030679.

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6

Wang, Shao Wei, Yi Zhang, and Hua Wu Liu. "Effect of Heat and Wet Treatment on the Strength of PLA Fiber." Advanced Materials Research 152-153 (October 2010): 1253–57. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1253.

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Before and after heat and wet treatment, the fineness and strength of PLA sample fibers were measured. Temperature, rather than moisture, was reckoned the major factor weakening the strength and fineness of PLA fiber. Acidic and alkali environments activated the hydrolysis of the fiber and lead to obvious fiber damage. Compared with the acidic environment, alkali condition resulted in far faster hydrolysis, caused more reduction of fiber diameter and strength. In addition, vertical cracks appeared on the fiber surface in alkali conditions, but did not occur in acidic environment. Finally, it w

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7

Rudawska, Anna. "The Impact of the Acidic Environment on the Mechanical Properties of Epoxy Compounds in Different Conditions." Polymers 12, no. 12 (2020): 2957. http://dx.doi.org/10.3390/polym12122957.

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The aim of this work was to determine the impact of the acidic environment on the mechanical properties of two epoxy compounds in different conditions. The samples were made from the epoxy compounds composed of the epoxy resin (based on Bisphenol A), triethylenetetramine curing agent (unmodified compound), and calcium carbonate (CaCO3) (modified compound). The epoxy compound samples were seasoned for the following period of time (i.e., one week, one month, and three months). The environment was tap water and the acidic environment had three different concentrations of acetic acid (3%, 6%, and

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8

Omrane, M., M. Mouli, A. S. Benosman, and Y. Senhadji. "Deterioration of Mortar Composites in Acidic Environment." Advanced Materials Research 1064 (December 2014): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amr.1064.3.

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In recent years, the rapid deterioration of various reinforced concrete structures has been widely recognized as worldwide problem. Acidic environments are very aggressive to concrete structures, as well as promote their degradation. The aim of this experimental study is to make a comparative analysis of the behavior of mortars prepared by cement (CPJ-CEM II/A) and composites of different percentage by weight of polymer. It highlights the influence of PET on the durability of these mortars. After 28 days of curing specimens in water, they are put in acid solutions of the same concentration 3%

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9

Tripathi, Deep, Rakesh Kumar, P. K. Mehta, and Amrendra Singh. "Silica fume mixed concrete in acidic environment." Materials Today: Proceedings 27 (2020): 1001–5. http://dx.doi.org/10.1016/j.matpr.2020.01.311.

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10

Paroha, Ruchi, Rashmi Chourasia, Rajesh Mondal, and Shivendra K. Chaurasiya. "PknG supports mycobacterial adaptation in acidic environment." Molecular and Cellular Biochemistry 443, no. 1-2 (2017): 69–80. http://dx.doi.org/10.1007/s11010-017-3211-x.

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11

Tatarchenko, H. O. "CORROSION OF NICKEL IN OZONIZED ACIDIC ENVIRONMENT." Science and Transport Progress, no. 13 (December 25, 2006): 161–64. http://dx.doi.org/10.15802/stp2006/18248.

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12

Šimůnek, Petr, Petr Štěpánek, Ivana Švaříčková, et al. "Effect of an acidic environment on a glass fibre reinforced polymer grid." MATEC Web of Conferences 310 (2020): 00022. http://dx.doi.org/10.1051/matecconf/202031000022.

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The article deals with the effect of an acidic environment on the mechanical properties of a Glass Fibre Reinforced Polymer (GFRP) grid. GFRP composites are prone to the absorption of surrounding media which are either of a liquid or gaseous state, and this may result in the degradation of their mechanical properties. The effect of an acidic environment is examined on specimens cut from a GFRP grid. The specimens were stored in an acidic bath (pH scale 2 – 2.5) for a period of 0 (reference specimen), 1000, 2000 and 6000 hours. The temperature of the acidic bath was 60°C. The specimens were the

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13

Sheng, Jie, Li-Bin Sun, Shu-Fen Zhao, et al. "Acidic stress induces protective autophagy in SGC7901 cells." Journal of International Medical Research 46, no. 8 (2018): 3285–95. http://dx.doi.org/10.1177/0300060518768167.

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Objective To investigate the effect of acidity on gastric cancer SGC7901 cells in terms of autophagy and provide a new strategy for therapeutically targeting gastric cancer autophagy in an acidic environment. Methods Transmission electron microscopy (TEM) and confocal laser scanning microscopy were used to examine the effect of an acidic environment on autophagosome formation. Light chain 3 (LC3) and p62 levels in SGC7901 cells exposed to acidic conditions were measured using Western blot analysis. To explore changes in autophagy flux, the cells were treated with an inhibitor of autophagy bafi

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Hirooka, Shunsuke, Yuu Hirose, Yu Kanesaki, et al. "Acidophilic green algal genome provides insights into adaptation to an acidic environment." Proceedings of the National Academy of Sciences 114, no. 39 (2017): E8304—E8313. http://dx.doi.org/10.1073/pnas.1707072114.

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Some microalgae are adapted to extremely acidic environments in which toxic metals are present at high levels. However, little is known about how acidophilic algae evolved from their respective neutrophilic ancestors by adapting to particular acidic environments. To gain insights into this issue, we determined the draft genome sequence of the acidophilic green alga Chlamydomonas eustigma and performed comparative genome and transcriptome analyses between C. eustigma and its neutrophilic relative Chlamydomonas reinhardtii. The results revealed the following features in C. eustigma that probably

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Hasegawa, Manami, Keisuke Maede, Miyuki Nishida, et al. "Abstract 1511: Cancer adaptation to acidic tumor microenvironment." Cancer Research 85, no. 8_Supplement_1 (2025): 1511. https://doi.org/10.1158/1538-7445.am2025-1511.

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Cancer cells exhibit a characteristic metabolic pattern known as the Warburg effect, which upregulates glycolysis even in aerobic environments. As a result, cancer cells are exposed to an acidic environment due to enhanced excretion of proton and lactate. We have previously reported that this acidic tumor microenvironment induces the activation of the cholesterol biosynthesis pathway and the accumulation of N1-acetylspermidine. Although the acidic tumor microenvironment is known to suppress cancer cell proliferation, the survival strategies employed by cancer cells under such harsh conditions

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16

Teymouri, Mohammad, Kiachehr Behfarnia, Amirhosein Shabani, and Armin Saadatian. "The Effect of Mixture Proportion on the Performance of Alkali-Activated Slag Concrete Subjected to Sulfuric Acid Attack." Materials 15, no. 19 (2022): 6754. http://dx.doi.org/10.3390/ma15196754.

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Long-term deterioration and durability concerns in harsh environments with acidic attacks are considered as the weaknesses of ordinary Portland cement (OPC) concrete. Although the performance of alkali-activated slag concrete (AASC) has been reported to be superior in acidic environments, there is a poor understanding regarding the impacts of diverse mix design parameters on AASC durability in an acidic environment. This research aims to understand the impact of mix design parameters on the durability of AASC in the sulfuric acid (H2SO4) environment with pH = 3. The type of alkaline solution,

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17

Czachura, Paweł. "Coniochaeta fodinicola (Fungi: Sordariomycetes) from a sulphurous spring in Poland." Plant and Fungal Systematics 69, no. 1 (2024): 7–13. http://dx.doi.org/10.35535/pfsyst-2024-0002.

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Coniochaeta fodinicola is an acidophilic fungus which has been isolated only several times from extremely acidic environments. In this study, Coniochaeta fodinicola was isolated from a sulphurous spring with slightly acidic, nearly neutral pH water (pH = 6.8) in Poland. The identification of this fungus was conducted based on sequencing and phyloge- netic analyses of ITS and LSU rDNA regions. Detailed morphological characteristics were provided for the isolated strain. The finding of C. fodinicola in a slightly acidic environment indicates that the species may occur in a broader range of condi

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18

Zhang, Xin, Xue Dong Wu, Jian Zhong Li, Hui Wang, Dan Dai, and Zhen Lun Song. "Anticorrosion Behaviors of Quaternary Polyethyleneimine in Acidic Environment." Materials Science Forum 610-613 (January 2009): 136–41. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.136.

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Polymeric compounds are of great interest as corrosion inhibitors in acidic environment due to their inherent stability. Polymeric film is effectively used for the protection of metals partly owing to their capacity to act as a physical barrier between the metal surface and the corrosive environment. In this paper, a cation polyelectrolyte inhibitor (Quaternary Polyethyleneimine, QPEI) was prepared. The quality and inhibition efficiency of QPEI self-adsorbed films were studied by polarization curve and electrochemical impedance spectroscopy, respectively. The compositions and morphologies of t

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19

Duna, Samson, and Fwangmun B.Wamyil. "Effect of Acidic Environment on Hollow Sandcrete Blocks." International Journal of Engineering Trends and Technology 47, no. 7 (2017): 399–405. http://dx.doi.org/10.14445/22315381/ijett-v47p266.

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20

ALHAJJI, J. "Pitting corrosion of stainless steels in acidic environment." British Corrosion Journal 32, no. 4 (1997): 291–96. http://dx.doi.org/10.1179/bcj.1997.32.4.291.

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21

Tamm, J., L. Tamm, and J. Arol'd. "Cathodic Hydrogen Evolution on Nickel in Acidic Environment." Russian Journal of Electrochemistry 40, no. 11 (2004): 1152–55. http://dx.doi.org/10.1023/b:ruel.0000048647.12787.bb.

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22

Xia, X., and G. Palidwor. "Genomic Adaptation to Acidic Environment: Evidence fromHelicobacter pylori." American Naturalist 166, no. 6 (2005): 776–84. http://dx.doi.org/10.1086/497400.

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23

Gissel, M., K. E. Brummel-Ziedins, S. Butenas, A. E. Pusateri, K. G. Mann, and T. Orfeo. "Effects of an acidic environment on coagulation dynamics." Journal of Thrombosis and Haemostasis 14, no. 10 (2016): 2001–10. http://dx.doi.org/10.1111/jth.13418.

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24

Yokel, Robert A., Matthew L. Hancock, Eric A. Grulke, Jason M. Unrine, Alan K. Dozier, and Uschi M. Graham. "Carboxylic acids accelerate acidic environment-mediated nanoceria dissolution." Nanotoxicology 13, no. 4 (2019): 455–75. http://dx.doi.org/10.1080/17435390.2018.1553251.

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25

Vetrík, Miroslav, Martin Přádný, Martin Hrubý, and Jiří Michálek. "Hydrazone-based hydrogel hydrolytically degradable in acidic environment." Polymer Degradation and Stability 96, no. 5 (2011): 756–59. http://dx.doi.org/10.1016/j.polymdegradstab.2011.02.020.

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26

Luís, Ana Teresa, Manuela Teixeira, Nuno Durães, et al. "Extremely acidic environment: Biogeochemical effects on algal biofilms." Ecotoxicology and Environmental Safety 177 (August 2019): 124–32. http://dx.doi.org/10.1016/j.ecoenv.2019.04.001.

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27

Acero, Patricia, Jordi Cama, and Carlos Ayora. "Rate law for galena dissolution in acidic environment." Chemical Geology 245, no. 3-4 (2007): 219–29. http://dx.doi.org/10.1016/j.chemgeo.2007.08.003.

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28

Park, H. J., J. C. Lyons, T. Ohtsubo, and C. W. Song. "Acidic environment causes apoptosis by increasing caspase activity." British Journal of Cancer 80, no. 12 (1999): 1892–97. http://dx.doi.org/10.1038/sj.bjc.6690617.

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29

Li, DengFeng, James A. Snipes, Mariana Murea, et al. "An Acidic Environment Induces APOL1-Associated Mitochondrial Fragmentation." American Journal of Nephrology 51, no. 9 (2020): 695–704. http://dx.doi.org/10.1159/000509989.

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Background: Apolipoprotein L1 gene (APOL1) G1 and G2 kidney-risk variants (KRVs) cause CKD in African Americans, inducing mitochondrial dysfunction. Modifying factors are required, because a minority of individuals with APOL1 high-risk genotypes develop nephropathy. Given that APOL1 function is pH-sensitive and the pH of the kidney interstitium is <7, we hypothesized the acidic kidney interstitium may facilitate APOL1 KRV-induced mitochondrial dysfunction. Methods: Human embryonic kidney (HEK293) cells conditionally expressing empty vector (EV), APOL1-reference G0, and G1 or G2 KRVs were in

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Lü, Yang, Hua Lu, Shiwei Wang, Jing Han, Hua Xiang, and Cheng Jin. "An Acidic Exopolysaccharide fromHaloarcula hispanicaATCC33960 and Two Genes Responsible for Its Synthesis." Archaea 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/5842958.

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A 1.1 × 106 Da acidic exopolysaccharide (EPS) was purified from an extremely halophilic archaeonHaloarcula hispanicaATCC33960 with a production of 30 mg L−1when grown in AS-168 medium, which mainly composed of mannose and galactose with a small amount of glucose in a molar ratio of 55.9 : 43.2 : 0.9. Two glycosyltransferase genes (HAH_1662andHAH_1667) were identified to be responsible for synthesis of the acidic EPS. Deletion of eitherHAH_1662orHAH_1667led to loss of the acidic EPS. The mutants displayed a different cell surface morphology, retarded growth in low salty environment, an increase

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31

Zhang, Zhijin, Zhiqin Zhang, Song Yue, Xingliang Jiang, and Jianlin Hu. "Performance Characteristics of Silicone Rubber for Use in Acidic Environments." Polymers 15, no. 17 (2023): 3598. http://dx.doi.org/10.3390/polym15173598.

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Silicone rubber insulators are widely used in power grids because of their excellent performance, but aging has been an inevitable problem of silicone rubber, especially in extreme conditions, such as acidic conditions. In order to clarify the performance changes in silicone rubber in an acidic environment, this paper uses the developed acid-resistant silicone rubber sheet and common silicone rubber samples as the research objects, and conducts an aging comparison test on them in a natural acidic environment. The electrical properties, physical properties, and chemical properties of the two ty

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Taheri, Ali, Nima Azimi, Daniel V. Oliveira, Joaquim Tinoco, and Paulo B. Lourenço. "Integrating Experimental Analysis and Gradient Boosting for the Durability Assessment of Lime-Based Mortar in Acidic Environment." Buildings 15, no. 3 (2025): 408. https://doi.org/10.3390/buildings15030408.

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This paper presents a comprehensive study of the mechanical properties of lime-based mortar in an acidic environment, employing both experimental analysis and machine learning to model techniques. Despite the extensive use of lime-based mortar in construction, particularly for the strengthening of structures as externally bonded materials, its behavior under acidic conditions remains poorly understood in the literature. This study aims to address this gap by investigating the mechanical performance of lime-based mortar under prolonged exposure to acidic environments, laying the groundwork for

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Piddington, Debra L., Ali Kashkouli, and Nancy A. Buchmeier. "Growth of Mycobacterium tuberculosis in a Defined Medium Is Very Restricted by Acid pH and Mg2+ Levels." Infection and Immunity 68, no. 8 (2000): 4518–22. http://dx.doi.org/10.1128/iai.68.8.4518-4522.2000.

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ABSTRACT Mycobacterium tuberculosis grows within the phagocytic vacuoles of macrophages, where it encounters a moderately acidic and possibly nutrient-restricted environment. Other mycobacterial species encounter acidic conditions in soil and aquatic environments. We have evaluated the influence of pH and divalent cation levels on the growth of M. tuberculosis and seven other mycobacterial species. In a defined medium, the growth of M. tuberculosis was very restricted by acidic pH. Higher levels of Mg2+ were required for growth of M. tuberculosis in mildly acidic media (pH 6.0 to 6.5) compared

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34

Shao, Xiaodong. "Research on the Steel for Oil and Gas Pipelines in Sour Environment." MATEC Web of Conferences 238 (2018): 04010. http://dx.doi.org/10.1051/matecconf/201823804010.

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In recent years, there are more and more oil and gas fields containing H2S corrosive media, and it is imperative to develop oil and gas transmission pipes in acidic environment. The research progress of steel for oil and gas pipelines in acidic environment is reviewed from the aspects of H2S corrosion mechanism and influencing factors in pipeline service under acidic service conditions. At the same time, the development status of sour-resistance corrosion oil and gas transmission steel tubes at home and abroad is introduced. Pipeline steel is further explored in terms of SSCC-resistance resear

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Lopez Bedogni, Germán, Francisco L. Massello, Alejandra Giaveno, Edgardo Rubén Donati, and María Sofía Urbieta. "A Deeper Look into the Biodiversity of the Extremely Acidic Copahue volcano-Río Agrio System in Neuquén, Argentina." Microorganisms 8, no. 1 (2019): 58. http://dx.doi.org/10.3390/microorganisms8010058.

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The Copahue volcano-Río Agrio system, on Patagonia Argentina, comprises the naturally acidic river Río Agrio, that runs from a few meters down the Copahue volcano crater to more than 40 km maintaining low pH waters, and the acidic lagoon that sporadically forms on the crater of the volcano, which is studied for the first time in this work. We used next-generation sequencing of the 16S rRNA gene of the entire prokaryotic community to study the biodiversity of this poorly explored extreme environment. The correlation of the operational taxonomic units (OTUs)s presence with physicochemical variab

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Ivancajic, S., I. Mileusnic, and Desanka Cenic-Milosevic. "In vitro antibacterial activity of propolis extracts on 12 different bacteria in conditions of 3 various pH values." Archives of Biological Sciences 62, no. 4 (2010): 915–34. http://dx.doi.org/10.2298/abs1004915i.

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This research investigated the effects of propolis extracted by 5 different solvents and aged for 7 days on twelve species of bacteria classified into four groups according to their pathogenicity in slightly acidic (pH=6), neutral (pH=7) and slightly alkaline (pH=8) environments. Propolis extracted by the examined solvents had antibacterial effects. The strongest effects on the growth of all tested microorganisms, except on the bacteria of the Salmonella genus, regardless of the pH value of the environment, were exerted by propolis extracted by ether, acetone, toluol and chloroform. In some ca

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Sun, Shi Quan, Qiu Yuan, Chang Bo Jiang, et al. "Study on Mechanisms of In Situ Moderately Labile Organic Phosphorus Control by Zeolite in Shallow Lake Sediments." Applied Mechanics and Materials 209-211 (October 2012): 1142–46. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1142.

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The internal contamination has played a significant role in eutrophication after external contamination was effectively controlled. Zeolite capping is selected to explore the release and transformation mechanisms of moderately labile organic phosphorus (MLOP) control. The result showed that the release of MLOP under weak acidic environment and weak alkaline environment are more readily achieved compared with that under neutral environments. Low temperature and light both promotes the release of MLOP. Particle sizes has no apparent effect. The release of MLOP is prohibitted by high dissolved ox

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Souza-Egipsy, Virginia, Juan F. Vega, Elena González-Toril, and Ángeles Aguilera. "Biofilm mechanics in an extremely acidic environment: microbiological significance." Soft Matter 17, no. 13 (2021): 3672–80. http://dx.doi.org/10.1039/d0sm01975e.

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Grafical abstract of the different biofilms studied, LTSEM images of the structural details and associated values of elastic modulus, G<sub>c</sub>′, and cohesive energy, E<sub>c</sub>. Scale bar = 20 μm.

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An, Li, Chao Wei, Min Lu, et al. "Recent Development of Oxygen Evolution Electrocatalysts in Acidic Environment." Advanced Materials 33, no. 20 (2021): 2006328. http://dx.doi.org/10.1002/adma.202006328.

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Sagili, Venkata Narsireddy, Habtamu Melesse Dicha, Binaya Patnaik, and Venkatesh Kannekanti. "Behavior of Copper Slag Admixed Concrete in Acidic Environment." International Journal of Current Engineering and Technology 10, no. 05 (2020): 776–70. http://dx.doi.org/10.14741/ijcet/v.10.5.11.

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Non-conventional building materials are in huge demand these days because of rapid urbanization and huge cost associated with conventional building materials. Sand is majorly used fine aggregate in the preparation of concrete, however heavy depletion of river beds and rising cost of sand have made the builders and construction industry to think about alternative form of fine aggregate. Many alternatives like industrial wastes, different types of slags, stone dust and agro wastes etc. have been tried to fully or partially replace river sand in preparation of concrete and the results have been e

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Elshaer, Ramadan Nagy, Mohamed Kamal El-Fawakhry, and Ahmed Ismail Zaky Farahat. "Behavior of Carbon Steel Machine Elements in Acidic Environment." Metallography, Microstructure, and Analysis 10, no. 5 (2021): 700–711. http://dx.doi.org/10.1007/s13632-021-00787-x.

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Zheng, Weichao, Hailong Fan, Le Wang, and Zhaoxia Jin. "Oxidative Self-Polymerization of Dopamine in an Acidic Environment." Langmuir 31, no. 42 (2015): 11671–77. http://dx.doi.org/10.1021/acs.langmuir.5b02757.

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Xia and Palidwor. "Genomic Adaptation to Acidic Environment: Evidence from Helicobacter pylori." American Naturalist 166, no. 6 (2005): 776. http://dx.doi.org/10.2307/3491238.

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., Srinivas K. S. "COMPARATIVE PERFORMANCE OF GEOPOLYMER CONCRETE EXPOSED TO ACIDIC ENVIRONMENT." International Journal of Research in Engineering and Technology 04, no. 16 (2015): 27–31. http://dx.doi.org/10.15623/ijret.2015.0416005.

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Vaquero, I., M. Vázquez, M. C. Ruiz-Domínguez, and C. Vílchez. "Enhanced production of a lutein-rich acidic environment microalga." Journal of Applied Microbiology 116, no. 4 (2014): 839–50. http://dx.doi.org/10.1111/jam.12428.

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Stapleton, Raymond D., Dwayne C. Savage, Gary S. Sayler, and Gary Stacey. "Biodegradation of Aromatic Hydrocarbons in an Extremely Acidic Environment." Applied and Environmental Microbiology 64, no. 11 (1998): 4180–84. http://dx.doi.org/10.1128/aem.64.11.4180-4184.1998.

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ABSTRACT The potential for biodegradation of aromatic hydrocarbons was evaluated in soil samples recovered along gradients of both contaminant levels and pH values existing downstream of a long-term coal pile storage basin. pH values for areas greatly impacted by runoff from the storage basin were 2.0. Even at such a reduced pH, the indigenous microbial community was metabolically active, showing the ability to oxidize more than 40% of the parent hydrocarbons, naphthalene and toluene, to carbon dioxide and water. Treatment of the soil samples with cycloheximide inhibited mineralization of the

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Shi, Yuejuan, Yanling Liu, Xuepeng Wang, Yongxing Zhou, Jun Ma, and Shuai Zhang. "Corrosion Study on Ni-based Alloy in Acidic Environment." IOP Conference Series: Materials Science and Engineering 611 (October 24, 2019): 012008. http://dx.doi.org/10.1088/1757-899x/611/1/012008.

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Blair, Harry C., and Latifa Ghandur-Mnaymneh. "Macrophage-mediated bone resorption occurs in an acidic environment." Calcified Tissue International 37, no. 5 (1985): 547–50. http://dx.doi.org/10.1007/bf02557839.

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Vaquero, Isabel, Mayca Vázquez, Mari Carmen Ruiz-Domínguez, and Carlos Vílchez. "Enhanced production of a lutein-rich acidic environment microalga." Journal of Applied Microbiology 116, no. 4 (2012): 839–50. https://doi.org/10.5281/zenodo.14780406.

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Abstract:

<strong>Aims:</strong> This study was aimed at increasing productivity of a novel lutein-richacidic environment microalga, Coccomyxa onubensis, based on efficientinorganic carbon use.<strong>Methods and Results:</strong> Productivity was determined based on dry weight data;inorganic carbon concentration mechanisms were determined by means ofcarbonic anhydrase activity; carotenoids were extracted with methanol andmeasured by HPLC techniques. The existence of carbon concentrationmechanisms and conditions that might lead to use them for addressingincreased productivity of C. onubensis was studied

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Poplai, Gaurav, and Sameer K. Jadhav. "Effect of Acidic Environment on the Surface Microhardness of BiodentineTM." World Journal of Dentistry 4, no. 2 (2013): 100–102. http://dx.doi.org/10.5005/jp-journals-10015-1212.

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Abstract:

ABSTRACT Aim To compare the effects of various levels of acidic pH on surface microhardness of Biodentine.TM Materials and methods Biodentine was mixed and packed into stainless steel molds (diameter = 5 mm and height = 1.5 mm). Four groups of 10 specimens each were formed and exposed to pH: 7.4, 6.4, 5.4 and 4.4 respectively for 4 days. Vickers microhardness was measured for each of the specimens and was measured 4 days after the exposure. Results Data was subjected to one-way ANOVA using Tukey's post hoc test. Group I (control pH = 7.4) showed greatest surface microhardness of 67.5 ± 4.1 HV.

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