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Готові списки джерел за темами / Neutralization indicators / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Neutralization indicators.

Статті в журналах з теми "Neutralization indicators"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Sajin, Kattuvilakam Abbas, G. Pillai Preeja, and P. Iyer Pavithra. "A Study on Acid – Base Indicator Property of Flowers of Impatiens Balsamina." Pharmaceutical and Chemical Journal 5, no. 5 (2018): 88–92. https://doi.org/10.5281/zenodo.13925422.

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Анотація:

Indicators are used to determine the equivalence point in acid – base titrations (neutralization titrations). They exhibit sharp color change with respect to change in pH. Popularly used indicators for neutralization titrations are synthetic chemicals. They are found to have hazardous effects in human body. The highly colored pigments obtained from plants are found to exhibit color changes with variation in pH. A study was done to check the indicator action of aqueous extract of flower pigments and compared with that of already existing synthetic indicators. Extraction was done using hot

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2

Hone, Duncan C., Brian H. Robinson, David C. Steytler, Roger W. Glyde, and John A. Cleverley. "Article." Canadian Journal of Chemistry 77, no. 5-6 (1999): 842–48. http://dx.doi.org/10.1139/v99-082.

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We have used stopped-flow kinetic studies to conduct an investigation into the acid neutralization reaction between overbased detergent additives and aqueous acid dispersed as w/o microemulsion droplets. Water-soluble pH indicators have been used to monitor the change in pH during the reaction. The acid neutralization rate was found to be dependent on the concentration of overbased additive, the temperature of the system, and the hydrocarbon chain length of the solvent. The systems are of importance in relation to the mechanism of acid neutralization by engine lubricants.Key words: overbased d

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3

Abbas, Sajin Kattuvilakam. "Study of acid-base indicator property of flowers of Ipomoea biloba." International Current Pharmaceutical Journal 1, no. 12 (2012): 420–22. http://dx.doi.org/10.3329/icpj.v1i12.12452.

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Анотація:

Indicators help to determine the equivalence point in acid base titrations (neutralization titrations). They show sharp color change with respect to change in pH. Commonly used indicators for neutralization titrations are synthetic in nature. They are found to posses hazardous effects in human body. The highly colored pigments obtained from plants are found to exhibit color changes with variation of pH. A study has been done to investigate the indicator activity of aqueous extract of flower pigments and compared with that of already existing synthetic indicators. Pigments were extracted usin

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4

A., K. lndrayan. "Natural dyes as neutralization indicators-a short review." Journal of Indian Chemical Society Vol. 80, May 2003 (2003): 505–9. https://doi.org/10.5281/zenodo.5839478.

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Deparatment of Chemistry, Gurukula Kangri University, Hardwar-249 404, India <em>E-mail:</em> akindray@sancharnet.in <em>Manuscript received 12 November 2002</em> Some of the naturally occurring coloured substances are pH-sensitive giving distinctly different colours in acid and basic mediums. Some of them, like the red cabbage aqueous extract, are colour-sensitive even to the same medium pH variation also and make a very good laboratory experiment for pH determination. Anthocyanidins are among the commonly occurring natural pigments. Natural colours giving a sharp, distinct and stable colour

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5

Pagariya, R. F. "GREEN CHEMISTRY: ROSELLE’S COROLLA EXTRACT AS A SUBSTITUTE FOR HAZARDOUS INTERNAL INDICATORS IN VOLUMETRIC ANALYSIS." International Journal of Research -GRANTHAALAYAH 7, no. 9 (2019): 118–22. http://dx.doi.org/10.29121/granthaalayah.v7.i9.2019.567.

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Анотація:

Indicators used in acid-base titration show well marked changes of colour in certain intervals of pH. Most of these indicators are organic dyes and are of synthetic origin. Today synthetic indicators are the choice of neutralization titrations. But due to environmental pollution, availability and cost, the search for natural compounds as an acid-base indicator was started. The present work highlights the use of the ethanolic extract of the corolla of Roselle (Hibiscus sabdariffa) as a pH indicator in strong acid-strong base, strong acid weak base, weak acid strong base and weak acid-weak base

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6

Dr., R. F. Pagariya. "GREEN CHEMISTRY: ROSELLE'S COROLLA EXTRACT AS A SUBSTITUTE FOR HAZARDOUS INTERNAL INDICATORS IN VOLUMETRIC ANALYSIS." International Journal of Research - Granthaalayah 7, no. 9 (2019): 118–22. https://doi.org/10.5281/zenodo.3464396.

Повний текст джерела

Анотація:

Indicators used in acid-base titration show well marked changes of colour in certain intervals of pH. Most of these indicators are organic dyes and are of synthetic origin. Today synthetic indicators are the choice of neutralization titrations. But due to environmental pollution, availability and cost, the search for natural compounds as an acid-base indicator was started. The present work highlights the use of the ethanolic extract of the corolla of Roselle (Hibiscus sabdariffa) as a pH indicator in strong acid-strong base, strong acid weak base, weak acid strong base and weak acid-weak base

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7

Sytnik, Natalia, Ekaterina Kunitsia, Viktoriia Kalyna, et al. "Technology development of fatty acids obtaining from soapstok using saponification." Eastern-European Journal of Enterprise Technologies 5, no. 6 (113) (2021): 16–23. http://dx.doi.org/10.15587/1729-4061.2021.241942.

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The processing of oil refining waste is essential from economic and environmental points of view. An important issue is the processing of soapstock to extract fatty acids, which are raw materials for various industries. The two-stage method of fatty acids obtaining from soapstock using saponification with sodium hydroxide solution and decomposition with sulfuric acid is investigated. The peculiarity of the work is the study of the influence of soapstock saponification conditions on the key efficiency indicators of fatty acid extraction: yield and neutralization number. A sample of soapstock wa

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8

Miss.Harshal, Chavan* Prutha Shirodkar A. S. Dhake Dr. A.G.Jadhav. "NATURAL INDICATORS AS ALTERNATIVE TO SYNTHETIC ACID BASE INDICATORS." Indo American Journal of Pharmaceutical Sciences 04, no. 11 (2017): 4078–82. https://doi.org/10.5281/zenodo.1048226.

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Анотація:

In acid-base titrations, indicators are used to show sharp color change at intervals of pH. Natural pigments in plants are highly colored substances and may show color change with variation of pH. An attempt has been made to investigate the indicator activity of flower pigments and to replace synthetic indicators as they have certain disadvantage like chemical pollution, availability problems and high cost. Alcoholic extract of Hibiscus rosasinensis, Calotropis gingantia, Brassica oleracea-capitata, Rosa chinensis, Brassica oleracea-italica, Ixora chinensis, Cantharanthus roseus gives sharp in

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9

Natalia, Sytnik, Kunitsia Ekaterina, Kalyna Viktoriia, et al. "Technology development of fatty acids obtaining from soapstok using saponification." Eastern-European Journal of Enterprise Technologies 5, no. 6 (113) (2021): 16–23. https://doi.org/10.15587/1729-4061.2021.241942.

Повний текст джерела

Анотація:

The processing of oil refining waste is essential from economic and environmental points of view. An important issue is the processing of soapstock to extract fatty acids, which are raw materials for various industries. The two-stage method of fatty acids obtaining from soapstock using saponification with sodium hydroxide solution and decomposition with sulfuric acid is investigated. The peculiarity of the work is the study of the influence of soapstock saponification conditions on the key efficiency indicators of fatty acid extraction: yield and neutralization number. A sample of soapsto

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10

Prashant, Thote. "GREEN CHEMISTRY: STUDY OF ACID-BASE INDICATOR PROPERTY OF GOLDEN BEET ROOT." International Journal of Research - GRANTHAALAYAH 3, no. 9 (Special Edition) (2017): 1–6. https://doi.org/10.5281/zenodo.851998.

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Анотація:

In acid- base titrations, indicators are used to show a sharp color changes at interval of pH.Natural pigments in plants are highly colored substances and may show color changes with variation of pH. An attempt has been made to investigate the indicator activity of root extract of golden beet root and to replace the synthetic indicators as they have certain disadvantages like chemical pollution, availability problems and high cost. A study has been done to investigate the indicator activity of aqueous extract of root pigments and compared with that of already existing synthetic indicators. Pig

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11

Thote, Prashant. "GREEN CHEMISTRY: STUDY OF ACID-BASE INDICATOR PROPERTY OF GOLDEN BEET ROOT." International Journal of Research -GRANTHAALAYAH 3, no. 9SE (2015): 1–6. http://dx.doi.org/10.29121/granthaalayah.v3.i9se.2015.3151.

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Анотація:

In acid- base titrations, indicators are used to show a sharp color changes at interval of pH.Natural pigments in plants are highly colored substances and may show color changes withvariation of pH. An attempt has been made to investigate the indicator activity of root extract of golden beet root and to replace the synthetic indicators as they have certain disadvantages like chemical pollution, availability problems and high cost. A study has been done to investigate the indicator activity of aqueous extract of root pigments and compared with that of already existing synthetic indicators. Pigm

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12

Salu F S*, Salu F. S*, Vidya C. S. Vidya C S, Dr Uma Nath U. Dr. Uma Nath U, Athira A. S. Athira A S, Dr R. Xavier Arulappa, and Dr Prasobh G. R. Dr. Prasobh G R. "Assessing the Efficacy of Anthocyanin Based Natural Ph Indicator against Phenolphthalein." International Journal of Pharmaceutical Research and Applications 10, no. 1 (2025): 1552–58. https://doi.org/10.35629/4494-100115521558.

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Анотація:

The color of acid-base indicators changes when the medium's pH changes, and the extracts of different plants exhibit sharp color changes when the reacting medium's pH changes. Because synthetic acid base indicators have some drawbacks, such as a difficult manufacturing process, high cost, and the potential to pollute the environment or injure users, a study has been conducted to replace them with natural extract. To find out their indicator activity, Hibiscus, Butterfly pea flower, Pomegranate, Red onion, Grape, and Dragon fruit extracts are compared to phenolphthalein indicator. Four differen

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13

Vambhurkar, G., A. Jagtap, A. Gavade, et al. "ETHANOLIC EXTRACT OF ARISTOLOCHIA BRACTEOLATA FLOWER AS A NATURAL INDICATOR FOR ACID-BASE TITRATION." INDIAN DRUGS 56, no. 03 (2019): 77–79. http://dx.doi.org/10.53879/id.56.03.11502.

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Анотація:

In acid-base titration or acid-base neutralization reaction the change in color due to change pH of the solution is caused due to a third substance which is termed as acid-base indicator or pH indicator. Every indicator shows different range of colors at different pH ranges. Synthetic indicators have been widely employed as indicators in acid-base titrations; however, due to environmental pollution, availability and cost, natural compounds are best alternates. Natural pigments in plants are highly colored substances and may show sharp color changes with variation in pH. In the present study an

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14

A., K. Indrayan, Kumar Rajeev, and K. Rathi Anuj. "Multibeneficial natural material - Dye from heartwood of Artocarpus heterophyllus Lamk." Journal of Indian Chemical Society Vol. 81, Dec 2004 (2004): 1097–101. https://doi.org/10.5281/zenodo.5833631.

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Анотація:

Department of Chemistry, Gurukula Kangri University, Hardwar-249 404, India <em>E-mail:</em> akindray@sancharnet.in                       <em>Fax</em> : 91-1334-246366 <em>Manuscript received 30 September 2004</em> Material isolated from the heartwood of <em>Artocarpus</em> <em>heterophyllus</em> is found to be of multiple diversified use. It could be used as a direct dye for wool and silk; had a sufficient antibacterial activity against certain bacteria the gram positive <em>Bacillus subtilis</em>, <em>B. cereus</em>, <em>Staphylococ

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15

Wu, Hao, Yifeng Qin, and Anze Liang. "Research on Management Index System of Low-Carbon Community Open-space under Dual-Carbon Goal." E3S Web of Conferences 393 (2023): 02017. http://dx.doi.org/10.1051/e3sconf/202339302017.

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This paper selects the theory of "carbon source, carbon sink and carbon neutralization" witch has high applicability in the "dual-carbon" target theory, to clarify the construction of low-carbon community open space under the "dual-carbon" target. Discuss the realization of low-carbon community open space under this theory, and build the target layer and secondary indicator layer of low-carbon open space construction management indicators based on this theory. Fifty representative indicators related to the open space in low-carbon communities are selected from the eight widely used evaluation

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16

Sytnik, Natalia, Ekaterina Kunitsia, Viktoria Mazaeva, et al. "Rational conditions of fatty acids obtaining by soapstock treatment with sulfuric acid." Eastern-European Journal of Enterprise Technologies 4, no. 6(112) (2021): 6–13. http://dx.doi.org/10.15587/1729-4061.2021.236984.

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Анотація:

As a result of alkaline neutralization of oils, a significant amount of soapstock is formed, the utilization of which creates an environmental and economic problem. The production of fatty acids from soapstock using sulfuric acid decomposition is investigated in this work. The peculiarity of the work is the determination of regression dependences of the yield and neutralization number of fatty acids on the soapstock processing conditions: temperature and duration. Soapstock obtained after neutralization of sunflower oil was used as raw material. Soapstock indicators: mass fraction of moisture

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17

Amaral, Anderson Rocha, Lucas Pinto Bernar, Caio Campos Ferreira, et al. "Economic Analysis of Thermal–Catalytic Process of Palm Oil (Elaeis guineesensis, Jacq) and Soap Phase Residue from Neutralization Process of Palm Oil (Elaeis guineensis, Jacq)." Energies 16, no. 1 (2023): 492. http://dx.doi.org/10.3390/en16010492.

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Palm oil is, from an economic, environmental, and social point of view, a vegetable oil with great potential and the state of Pará-Brazil is Brazil’s great producer. In addition, soap phase residue or palm oil neutralization sludge (PONS), a byproduct of the neutralization step of the chemical refinement of palm oil, is produced, posing a huge problem for waste disposal and management in the production process of refined palm oil (RPO). In this context, this work aims to systematically investigate the economic analysis of the thermal–catalytic process of crude palm oil (CPO) and palm oil neutr

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18

Natalia, Sytnik, Kunitsia Ekaterina, Mazaeva Viktoria, et al. "Rational conditions of fatty acids obtaining by soapstock treatment with sulfuric acid." Eastern-European Journal of Enterprise Technologies 4, no. 6 (112) (2021): 6–13. https://doi.org/10.15587/1729-4061.2021.236984.

Повний текст джерела

Анотація:

As a result of alkaline neutralization of oils, a significant amount of soapstock is formed, the utilization of which creates an environmental and economic problem. The production of fatty acids from soapstock using sulfuric acid decomposition is investigated in this work. The peculiarity of the work is the determination of regression dependences of the yield and neutralization number of fatty acids on the soapstock processing conditions: temperature and duration. Soapstock obtained after neutralization of sunflower oil was used as raw material. Soapstock indicators: mass fraction of moisture

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19

Dzevochko, Oleksandr, Mykhaylo Podustov, Ihor Lysachenko, Alona Dzevochko, and Roman Vorozhbiian. "INVESTIGATION OF THE NEUTRALIZATION PROCESS OF SULFATION PRODUCTS IN THE SURFACTANTS PRODUCTION." Bulletin of the National Technical University "KhPI". Series: Chemistry, Chemical Technology and Ecology, no. 2(6) (December 23, 2021): 3–8. http://dx.doi.org/10.20998/2079-0821.2021.02.01.

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The process of sulfation products neutralization in the production of surfactants is not basic, but at this stage the positive effects obtained at the stage of sulfation of organic matter with sulfur trioxide gas are fixed. To preserve the degree of sulfation obtained, it is necessary to carry out the neutralization process under conditions precluding the occurrence of hydrolysis in an acidic medium. The neutralization reaction takes place with a high heat release of about 40 kJ / mol. Analysis of the literature data showed that the neutralization process is not well covered. Little data and h

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20

Qi Chen, Qianqian Zhang, Guanjun Li, Honglei Chen, and Ping Li. "A Longitudinal Study on the Perioperative Period of Cardiac Surgery — Multiple Interactions and Effects of Heparin Pleiotropy and Immune Microenvironment." Journal of Innovations in Medical Research 4, no. 3 (2025): 69–84. https://doi.org/10.63593/jimr.2788-7022.2025.06.007.

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Objective: To investigate the differences and trends of multiple monitoring indicators during the peri-cardiopulmonary bypass (CPB) period in patients undergoing heart transplantation (HTx) and ventricular assist device (VAD) implantation, and to explore the interaction and impact of unfractionated heparin (UFH) on the immune microenvironment under short-term, high-dose UFH administration. Methods: This prospective study enrolled 15 HTx and 19 VAD recipients between 2023 and 2024. Monitoring was conducted at five observation points: pre-CPB, 30 min post-CPB, before shutdown, 10 min post-hepari

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21

Das, S. S., and B. Bhagawati. "Re-imagining Chemistry Laboratory Experiments by using Natural Pigments– Fostering Chemistry Students towards Sustainability." Journal of Scientific Research 16, no. 2 (2024): 603–12. http://dx.doi.org/10.3329/jsr.v16i2.70538.

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Green Chemistry and Sustainability are the two widely used concepts in the present-day Higher Education Chemistry curriculum. This paper issues a call for action for chemistry instructors to build stronger connections in the chemistry curriculum to sustainability. An acid-base titration is a commonly used experiment in undergraduate laboratories where synthetic indicators are generally used to locate the endpoint by observing the color change. In this paper, the ability of aqueous extracts of Lagerstroemia speciosa (locally known as Azar) as a natural indicator was investigated by using it ins

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22

Mallick, Abhijit, and Anindya Saha. "Study on Estimation of Alkalinity of Water Sample Using a Novel Technique pH-Metric Method." International Research Journal of Pure and Applied Chemistry 26, no. 3 (2025): 1–10. https://doi.org/10.9734/irjpac/2025/v26i3912.

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Анотація:

The alkalinity of water is one of the important parameters of water quality. The volumetric titration method using a standardized hydrochloric acid solution is a prevalent technique to estimate individual concentrations of basic radicals, like, , , and ions, which are primarily responsible for the alkalinity of water. However, the method needs two external indicators, namely phenolphthalein and methyl red to mark the end points of titrations. Furthermore, accuracy of the method is sacrificed due to inevitable parallax errors during marking of the end point of titration. This present work repor

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23

Jackson, Michael B., Elizabeth M. Vandermeer, Nigel Lester, Jacqueline A. Booth, Lewis Molot, and Isobelle M. Gray. "Effects of Neutralization and Early Reacidification on Filamentous Algae and Macrophytes in Bowland Lake." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 2 (1990): 432–39. http://dx.doi.org/10.1139/f90-046.

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Within one year of neutralizing Bowland Lake (pH 4.8–5.5 increased to 6.3–6.7), previously extensive growths of filamentous algae et (Mougeotia and Zygogonium, > 10 and 100% shoreline coverage, respectively) were essentially eliminated (< 1% shoreline coverage). Reacidification in the second year (pH 5.7–6.7) was accompanied by increased submerged epilithic and epiphytic growths of predominantly Zygogonium, often to preliming coverage. As found in other studies, pH [Formula: see text] appears to represent a threshold relative to the predominance of certain filamentous algae in softwater

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24

Королева, Е. В. "System of indicators for identification, assessment and neutralization of threats to financial security agricultural enterprise." Экономика и предпринимательство, no. 10(147) (February 21, 2023): 744–49. http://dx.doi.org/10.34925/eip.2022.147.10.143.

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Анотація:

В статье определена связь между уровнем финансового состояния предприятия и его финансовой безопасностью. Представлена система индикаторов по выявлению, оценке и нейтрализации угроз финансовой безопасности сельскохозяйственного предприятия. На примере типичного сельскохозяйственного предприятия СПК «Яковлевское» Костромского района Костромской области рассмотрен практический аспект использования разработанной системы индикаторов, выявлены угрозы финансовой безопасности предприятия, представлена система мероприятий по их локализации и нейтрализации. Приводится сравнительная оценка уровня финанс

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25

A., K. Indrayan, Yadav Vimla, Kumar Rajeev, and K. Tyagi Pradeep. "Isolation of the natural colorant from the roots of Arnebia nobilis and its use as a new neutralization indicator." Journal of India Chemical Society Vol 81, Aug 2004 (2004): 717–20. https://doi.org/10.5281/zenodo.5830366.

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Анотація:

Department of Chemistry, Gurukula Kangri University, Hardwar-249 404, India <em>E-mail</em>: akindray@sancharnet.in         <em> Fax</em>: 91-1334-246366 <em>Manuscript received 27 June 2002, revised 3 March 2003. accepted 17 March 2004</em> .Solution of natural dye from the roots of the plant<em> Arnebia nobilis</em> in methanol is an excellent acid-alkali indicator capable of working in much wider range than the usual indicators phenolphthalein and methyl orange. Volumetric titrations of strong acid-strong alkali, strong acid-weak alkali and weak acid-strong alkali a

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26

A., K. Indrayan, and S. Guleria B. "Isolation of the natural dye from the heartwood of Caesalpinia sappan and its use as a new neutralization indicator." Journal of Indian Chemical Society Vol. 78, Sep 2001 (2001): 476–78. https://doi.org/10.5281/zenodo.5902540.

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Анотація:

Department of Chemistry, Gurukula Kangri University, Hardwar-249 404, India <em>E-mail</em> : akindray@nde.vsnl.net.in                        <em> Fax</em> : 91-0133-416366 <em>Manuscript received 27 June 2000, revised 22 March 2001, accepted 24 March 2001</em> Solution of natural dye from heartwood of the plant <em>Caesalpinia sappan </em>in ethanol is an excellent acid-alkali indicator, capable of working in much wider range than the usual indicators phenolphthalein and methyl orange. Volumetric titrations of strong acid-strong

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27

Borysenko, Maria. "Indicators of acidity and methods of its neutralization during preventive conservation and restoration of architectural graphics." Collection of scientific works “Notes on Art Criticism”, no. 39 (September 1, 2021): 43–46. http://dx.doi.org/10.32461/2226-2180.39.2021.238679.

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Анотація:

The purpose of the article is to analyze the impact of pH of the paper on the state of preservation, to describe the main methods of neutralization of acidity in the implementation of restoration and conservation measures for the preservation of architectural graphics. To indicate the need to monitor the pH state when preserving paper-based collections. Methodology. To analyze the art, methods of systematization, comparison, and generalization to determine and describe the optimal techniques and experience for the preservation of collections of architectural graphics on a paper basis. The scie

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28

Gao, Fan, Lingjie Xu, Qian Wang, et al. "Four-Color Pseudovirus-Based Neutralization Assay: A Rapid Method for Evaluating Neutralizing Antibodies Against Quadrivalent Hand, Foot, and Mouth Disease Vaccine." Vaccines 13, no. 3 (2025): 320. https://doi.org/10.3390/vaccines13030320.

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Background/Objectives: Enterovirus 71 (EV71) and coxsackieviruses A16 (CA16), A10 (CA10), and A6 (CA6) are the primary pathogens that cause hand, foot, and mouth disease (HFMD). Currently, many manufacturers are developing bivalent, trivalent, and tetravalent vaccines that target these antigens. Cell-based neutralization assay (CBNA), the gold standard for detecting neutralizing antibodies (NtAbs), which are used as indicators of HFMD vaccine efficacy, has several limitations. We aimed to develop a novel assay for detecting NtAbs against a quadrivalent HFMD vaccine. Methods: We developed a fou

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29

Petik, Ihor, Anna Belinska, Ekaterina Kunitsia, et al. "Processing of ethanol-containing waste of oil neutralization in the technology of hand cleaning paste." Eastern-European Journal of Enterprise Technologies 1, no. 10 (109) (2021): 23–29. http://dx.doi.org/10.15587/1729-4061.2021.225233.

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Анотація:

The graphical dependence of the washing capacity of ethanol-containing soapstock on the concentration in an aqueous solution and the temperature of interaction with the polluted material has been determined. It is proposed to use a 40 % aqueous solution of ethanol-containing soapstock in the hand cleaning paste technology. This soapstock solution has a washing capacity of 92–98 % at the temperature of interaction with the polluted material of 25–40 °C. The regularity of the effect of the structurant content on the consistency of hand cleaning paste was investigated using an approximating polyn

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Ihor, Petik, Belinska Anna, Kunitsia Ekaterina, et al. "Processing of ethanol-containing waste of oil neutralization in the technology of hand cleaning paste." Eastern-European Journal of Enterprise Technologies 1, no. 10(109) (2021): 23–29. https://doi.org/10.15587/1729-4061.2021.225233.

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Анотація:

The graphical dependence of the washing capacity of ethanol-containing soapstock on the concentration in an aqueous solution and the temperature of interaction with the polluted material has been determined. It is proposed to use a 40 % aqueous solution of ethanol-containing soapstock in the hand cleaning paste technology. This soapstock solution has a washing capacity of 92–98 % at the temperature of interaction with the polluted material of 25–40 °C. The regularity of the effect of the structurant content on the consistency of hand cleaning paste was investigat

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Popova, Olga, Aleksandr Starcev, Mikhail Lunyakov, and Natalia Fomenko. "Environmental and technical and economic indicators of methods of solid domestic waste recovery." E3S Web of Conferences 110 (2019): 01052. http://dx.doi.org/10.1051/e3sconf/201911001052.

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Анотація:

The paper analyzes the waste recovery methods. The comparison of the recovery and processing technologies of solid domestic waste is made. The most effective technologies are proposed from the point of view of ecology, specific capital investments, profitability. Analysis of the research results showed that the pyrolysis technology for the neutralization and recovery of domestic waste is the best according to technical and economic and environmental indicators. The calculation of the economic pay-back is carried out using the example of the waste recovery plant construction by the pyrolysis me

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Mallick, Abhijit. "Study of Estimation of Hardness of Water Using pH-Meter." International Research Journal of Pure and Applied Chemistry 25, no. 6 (2024): 78–86. https://doi.org/10.9734/irjpac/2024/v25i6886.

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The hardness of water is one of the important parameters of water quality. The complexometric titration method is a prevalent technique to estimate concentrations of and ions individually, which are primarily responsible for the hardness of water. However, the method needs two external indicators to mark the end points of titrations. Furthermore, accuracy of the method is sacrificed due to inevitable parallax errors during marking of the endpoint of titration. This present work reports that during titration of a hard water sample with a complexing agent (here, solution), changes continuously.

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Cui, Dong, Xiaohan Shi, Wenya Liu, et al. "Investigation of the Neutralizing Behaviors of Cement-Based Materials Using a New pH Indicator Formulated from February Orchid Petals." Materials 15, no. 22 (2022): 8033. http://dx.doi.org/10.3390/ma15228033.

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Investigation of the neutralizing behavior of concrete is essential, as it can help reveal the durability properties of concrete structures. In this paper, anthocyanin extracted from February orchid (F. orchid) petals was used to characterize the neutralized (carbonated, leached, and sulfate-attacked) regions of cement-based materials. The durability of F. orchid indicator was evaluated through comparison between discoloring behaviors of fresh and aged F. orchid indicators, and the capability of the new indicator in neutralization characterization was then verified by combining indicator (phen

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Nebeluk, Robert, and Maciej Ławryńczuk. "Fast Nonlinear Predictive Control Using Classical and Parallel Wiener Models: A Comparison for a Neutralization Reactor Process." Sensors 23, no. 23 (2023): 9539. http://dx.doi.org/10.3390/s23239539.

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The Wiener model, composed of a linear dynamical block and a nonlinear static one connected in series, is frequently used for prediction in Model Predictive Control (MPC) algorithms. The parallel structure is an extension of the classical Wiener model; it is expected to offer better modeling accuracy and increase the MPC control quality. This work discusses the benefits of using the parallel Wiener model in MPC. It has three objectives. Firstly, it describes a fast MPC algorithm in which parallel Wiener models are used for online prediction. In the presented approach, sophisticated trajectory

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Małek, Stanisław, Kazimierz Januszek, Józef Barszcz, et al. "Preliminary assessment of the ecochemical condition of soils after fertilization of younger spruce Picea abies (L.) H. Karst. stands in the Beskid Slaski and Zywiecki Mts." Folia Forestalia, Series A - Forestry 53(2) (July 1, 2011): 93–103. https://doi.org/10.5281/zenodo.30762.

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The experimental plots were located in the middle forest zone (900– 950 m) on two nappes of the flysch Carpathians: Magura (the Ujsoły Forest District) and Silesian (the Wisła Forest District) in the spruce stands of age class 21– 40 years. Serpentinite was introduced in the autumn of 2008 on all plots while other fertilizers (N, P, NP and NPK) in the spring of 2009. Based on the chemical composition of soil solutions collected in lysimeters placed at the depth of 20 cm in the autumn 2008 and the spring and autumn 2009, ecochemical parameters were calculated: acid neutralization ca

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36

Ivashkiv, Yu A., G. Yu Nedilka, and A. R. Savchak. "STUDY OF THE QUALITY OF VEGETABLE OILS UNDER DIFFERENT STORAGE CONDITIONS." Scientific and Technical Bulletin оf State Scientific Research Control Institute of Veterinary Medical Products and Fodder Additives аnd Institute of Animal Biology 26, no. 1 (2025): 69–73. https://doi.org/10.36359/scivp.2025-26-1.08.

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The objective of this study was to evaluate the quality of vegetable oils: unrefined sunflower oil (Grade I) and hydrated soybean oil (Grade I). One of the key phases of the analysis involved determining quality indicators, including acid value (representing the total content of free fatty acids) and peroxide value (indicating the amount of primary oxidation products of fats – peroxide compounds). The oxidation degree of fats was evaluated by determining the peroxide value, titrating the released iodine with a sodium thiosulfate solution, and by measuring the acid value using the neutralizatio

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MIROSHKINA, N. V. "BALANCED SCORECARD AS A MODERN MANAGEMENT TOOL FOR INDUSTRIAL ENTERPRISE." Herald of Omsk University. Series: Economics, no. 1 (57) (2017): 100–107. http://dx.doi.org/10.24147/1812-3988.2017.1.100-107.

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The article describes the relevance of the application of the optimal tool for effective management of industrial enterprise - balanced scorecard. The main scientific idea is the methodology of aggregating the various indicators reflecting the activity of the economic entity as objectively as possible. While considerable attention is being given not just to a basic summation of indicators on various aspects and activities of industrial enterprises, but to their organic connection to the system. The complexity of formation of the system of balanced indicators to evaluate the efficiency of enter

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Davydenko, Nadiia, Natalia Wasilewska, Zoya Titenko, and Mirosław Wasilewski. "Substantiation of the Risk Neutralization Mechanism in the Financial Security Management of Agricultural Enterprises." Sustainability 16, no. 3 (2024): 1159. http://dx.doi.org/10.3390/su16031159.

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In the context of the Ukrainian economy reforming and ensuring that economic activity is conducted in accordance with current global economic trends, special attention should be paid to solving the problem of neutralizing risks in the financial security management of agricultural enterprises. The purpose of this article is to substantiate the risk neutralization mechanism in the management of financial security for enterprises in the agrarian sector. In writing this article, we used scientific methods such as modeling (to determine the impact of a certain set of factors on the level of enterpr

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39

Zimnukhova, A. E., and E. V. Gaevaya. "Study of a Method for Neutralizing the Hydrocarbon-based Drilled Cuttings." Ecology and Industry of Russia 28, no. 1 (2024): 4–10. http://dx.doi.org/10.18412/1816-0395-2024-1-4-10.

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The results of studies of the mechanical and chemical-toxicological properties of hydrocarbon-based drilled cuttings during the firing process at various temperature conditions are presented. Changes in the mineralogical composition, gross content of heavy metals, content of chloride, phosphate, sulfate ions and petroleum products, as well as the level of toxicity were studied. The indicators of the neutralization product were determined: water absorption capacity, strength, loss of strength in a water-saturated state. A technological scheme for the process of neutralizing the drilled cuttings

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Malkova, I. L., and P. Yu Sitnikov. "STRESS REACTION OF PUBLIC HEALTH OF THE KAMBARKA REGION (UDMURTIA) TO PLACING OBJECTS OF ECOLOGICAL RISK." Bulletin of Udmurt University. Series Biology. Earth Sciences 30, no. 3 (2020): 267–77. http://dx.doi.org/10.35634/2412-9518-2020-30-3-267-277.

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An analysis of the dynamics of medical and statistical indicators of the Kambarka region showed a pronounced negative reaction of demographic processes to the placement and functioning of environmental risk objects: a chemical weapons destruction plant (2003-2009) and its conversion to an industrial and technical complex for processing, utilization and neutralization of wastes of I-II hazard classes (2019). The demographic situation in the Kambarka region over the past decades is characterized as the tensest among the cities and districts of the Udmurt Republic. The forecast for its developmen

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41

Avdeenko, A. P., Yu P. Holmovoj, S. A. Konovalova, and I. Yu Yakymenko. "NEW ACID-BASIC INDICATORS: RESEARCH USING A SMARTPHONE." Odesa National University Herald. Chemistry 26, no. 1(77) (2021): 97–106. http://dx.doi.org/10.18524/2304-0947.2021.1(77).226144.

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Modern cameras, desktop scanners, smartphones allow not only registering an image, but also determining its color characteristics. That allows us to quickly, objectively and automatically determine the color characteristics of colored samples in acid-base titration, because there is a significant error at visually determining the pH range of the color transition. In analytical chemistry the characteristics of acid-base indicators are very important, in particular their pH transition interval. But the disadvantage of most indicators is the wide range of color transition: from 1 to 3 pH units. T

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42

Fedorovich, Oleg, Yurii Pronchakov, Yuliia Leshchenko, and Alina Yelizieva. "Modeling the impact of threats and vulnerabilities in transport logistics of a developing enterprise." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 3 (October 5, 2021): 29–36. http://dx.doi.org/10.32620/reks.2021.3.03.

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A scientific and appliedproblem of modeling the impact of threats and vulnerabilities in the logistics of transportation of goods of a distributed production system was posed and solved. The relevance of the research topic is associated with the identification of significant threats and the emergence of vulnerabilities, which can lead to deterioration in the main indicators of a developing enterprise. The research solves of the task of increasing of logistic processes effectiveness of goods transportation in a distributed manufacturing system in emerging threats and manifestation of vulnerabil

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Kalyna, Viktoriia, Vitalii Koshulko, Olha Ilinska, et al. "Development of soapstock processing technology to ensure waste-free and safe production." Eastern-European Journal of Enterprise Technologies 6, no. 10 (114) (2021): 23–29. http://dx.doi.org/10.15587/1729-4061.2021.245094.

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Soapstock is a large-tonnage waste of the oil and fat industry, the disposal of which is environmentally hazardous. Processing of soapstock into industrially valuable products, in particular, fatty acids, is promising. The method for producing fatty acids, which consists in sequential saponification of soapstock with sodium hydroxide solution, salting out with sodium chloride and decomposition with sulfuric acid solution has been investigated. The feature of this work is the study of the effect of salting out conditions of saponified soapstock on the yield and neutralization number of fatty ac

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44

Viktoriia, Kalyna, Koshulko Vitalii, Ilinska Olha, et al. "Development of soapstock processing technology to ensure waste-free and safe production." Eastern-European Journal of Enterprise Technologies 6, no. 10 (114) (2021): 23–29. https://doi.org/10.15587/1729-4061.2021.245094.

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Анотація:

Soapstock is a large-tonnage waste of the oil and fat industry, the disposal of which is environmentally hazardous. Processing of soapstock into industrially valuable products, in particular, fatty acids, is promising. The method for producing fatty acids, which consists in sequential saponification of soapstock with sodium hydroxide solution, salting out with sodium chloride and decomposition with sulfuric acid solution has been investigated. The feature of this work is the study of the effect of salting out conditions of saponified soapstock on the yield and neutralization number of fatty ac

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45

Su, Hao, and Shuo Yang. "Spatio-Temporal Urban Land Green Use Efficiency under Carbon Emission Constraints in the Yellow River Basin, China." International Journal of Environmental Research and Public Health 19, no. 19 (2022): 12700. http://dx.doi.org/10.3390/ijerph191912700.

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In the context of rapid urbanization and limited land amount, it is essential to scientifically evaluate the urban land green use efficiency (ULGUE) to promote regional sustainable development. Current studies are of great value for enriching the theoretical system and application research of ULGUE. Still, most of them only consider industrial pollution but ignore carbon emission as an essential environmental influencing indicator. This paper introduced carbon emissions into the input-output indicator system, measured ULGUE of 57 cities in the Yellow River Basin (YRB) over the 2004–2017 period

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Abdykadyrov, Askar, Palvan Kalandarov, Sunggat Marxuly, et al. "STUDY OF THE PROCESS OF NEUTRALIZATION OF MICROORGANISMS IN DRINKING WATER EXPOSED TO ENVIRONMENTAL PROBLEMS." Water Conservation & Management 8, no. 3 (2024): 352–61. https://doi.org/10.26480/wcm.03.2024.352.361.

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The scientific research investigates the neutralization and purification process of harmful microorganisms present in surface water using an ozonator device, which operates based on a pilot electric discharge method. A pilot ozonator based on a special high-frequency electric discharge has been developed for disinfection and cleaning of harmful microorganisms found in surface water. In order to conduct practical tests on scientific research work, special water was taken from the Ili floodplain and an examination of the water composition was carried out. The examination results revealed the pre

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Dabravolski, S. A., and Y. K. Kavalionak. "NEUTRALIZATION OF FEED LECTINS WITH GLUCOSAMINE AS A MEANS OF PREVENTION OF GASTROENTERITIS IN WEANING PIGS." Transactions of the educational establishment “Vitebsk the Order of “the Badge of Honor” State Academy of Veterinary Medicine 59, no. 1 (2023): 83–88. http://dx.doi.org/10.52368/2078-0109-2023-59-1-83-88.

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Feed lectins are one of the etiological factors contributing to the occurrence of gastroenteritis in piglets. In this study, a comparative analysis of various methods for neutralizing lectins in the feeds of weaned piglets was carried out: heat treatment and the addition of lectin-specific carbohydrate glucosamine. The causative role of lectins in the development of gastroenteritis and their negative impact on animals was confirmed by general and biochemical blood tests. The paper presents the positive effect of neutralization of feed lectins on production indicators and the incidence of gastr

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Zhang, Xuanxuan, Lidong Guan, Na Li, et al. "Establishment of the First National Standard for Neutralizing Antibodies against SARS-CoV-2 XBB Variants." Viruses 16, no. 4 (2024): 554. http://dx.doi.org/10.3390/v16040554.

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Neutralizing antibodies (NtAbs) against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) are indicators of vaccine efficacy that enable immunity surveillance. However, the rapid mutation of SARS-CoV-2 variants prevents the timely establishment of standards required for effective XBB vaccine evaluation. Therefore, we prepared four candidate standards (No. 11, No. 44, No. 22, and No. 33) using plasma, purified immunoglobulin, and a broad-spectrum neutralizing monoclonal antibody. Collaborative calibration was conducted across nine Chinese laboratories using neutralization methods aga

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Kubic, Andrey, and Sergey Hmelev. "FINANCIAL INDICATORS AS A TOOL IDENTIFICATION AND NEUTRALIZATION OF THREATS TO THE ECONOMIC SECURITY OF ENTERPRISES OF THE CONSTRUCTION INDUSTRY." Russian Journal of Management 10, no. 1 (2022): 121–25. http://dx.doi.org/10.29039/2409-6024-2022-10-1-121-125.

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The problem of identifying threats to economic security in enterprises consists of economic reforms carried out in Russia. In turn, entrepreneurial activity by its nature is usually associated with uncertainty and risk in the field of economic conjuncture. The construction industry is one of the most material-intensive sectors of the country's economy. Taking into account the risky nature of the organization's activities in the face of ever-increasing fierce competition and sanctions pressure, today it actualizes the consideration of the problem of ensuring economic security to detect si

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Wei, Ting Ting, Yang Yu, Zhen Qi Hu, et al. "Research Progress of Acid Mine Drainage Treatment Technology in China." Applied Mechanics and Materials 409-410 (September 2013): 214–20. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.214.

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Acid mine drainages treatment technology is a hot issue in the mining industry. It summarizes the causes, the reaction mechanism and impact on the environment of acid mine drainage, and introduces the monitoring indicators of acid mine drainage. Further it focuses on the acid mine drainages terminal treatment technologies that including neutralization, sulfide precipitation, microbiological method, constructed wetlands, membrane method and the iron-carbon micro electrolysis, with the analysis of its theories, advantages, disadvantages and practical application. Meanwhile it introduces the majo

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