Готові списки джерел за темами / PH indicators

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Добірка наукової літератури з теми "PH indicators"

Автор: Grafiati
Опубліковано: 3 червня 2025
Оновлено: 31 липня 2025

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Статті в журналах з теми "PH indicators"

1

Garrett, Jared R., Xinxin Wu, Sha Jin, and Kaiming Ye. "pH-insensitive glucose indicators." Biotechnology Progress 24, no. 5 (2008): 1085–89. http://dx.doi.org/10.1002/btpr.26.

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2

Fitri*, Camalin Bela Sukmaning, and Retno Aliyatul Fikroh. "The Potential of Clitoria ternatea L. Extracts as an Alternative Indicator in Acid-Base Titration." Jurnal IPA & Pembelajaran IPA 5, no. 4 (2021): 340–52. http://dx.doi.org/10.24815/jipi.v5i4.23183.

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Анотація:
Experiments are an important part of the chemistry curriculum. An indicator in the form of a synthesis indicator is commonly used in acid-base materials experiments. The usage of synthetic indicators can result in waste that is both environmentally harmful and costly. The butterfly pea flower is one of the plants that contains anthocyanins, which have the potential to be used as an alternative indication of natural acids and bases. The study aims to determine the acid and base material curriculum and competency indicators, as well as the potential of butterfly pea flower extract as a substitut
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3

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. "Review on Natural Ph Indicators." International Journal of Pharmaceutical Research and Applications 10, no. 1 (2025): 859–65. https://doi.org/10.35629/4494-1001859865.

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Анотація:
Materials from fruits, plants, or other natural sources that change color in response to pH differences are known as natural pH indicators. These indicators are non-toxic, economical, and environmentally beneficial substitutes for artificial pH indicators. Natural sources that include anthocyanins, curcumin, and other pigments that change color based on the acidity or alkalinity of the solution include hibiscus, butterfly pea flowers, pomegranates, red onions, dragon fruit, grapes, red cabbage, turmeric, and beetroot. Because of their ease of use and accessibility, natural pH indicators are fr
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4

Han, Junyan, and Kevin Burgess. "Fluorescent Indicators for Intracellular pH." Chemical Reviews 110, no. 5 (2010): 2709–28. http://dx.doi.org/10.1021/cr900249z.

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5

Jang, Ji-Sung, and Sung-Hoon Kwon. "Micro pH Sensor Using Patterned Hydrogel with pH Indicators." Journal of Sensor Science and Technology 20, no. 4 (2011): 234–37. http://dx.doi.org/10.5369/jsst.2011.20.4.234.

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6

Simonyan, Tatiana R., Anastasia V. Mamontova, Konstantin A. Lukyanov, and Alexey M. Bogdanov. "FLIM Indicators for Quantitative Measurement of pH." Engineering Proceedings 6, no. 1 (2021): 33. http://dx.doi.org/10.3390/i3s2021dresden-10144.

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Анотація:
Monitoring of intracellular pH changes in situ can provide valuable information about cellular metabolism and a deeper understanding of physiological processes. Most traditional fluorescent indicators are only capable of a relative assessment of changes in the studied parameter in the cell. We associate the possibility of measuring the absolute values that characterize the analyte with the detection of the indicator signal in the time domain, where its quantitative measure is the fluorescence lifetime (tau). In this project, we test promising pH-sensitive fluorophores with labile fluorescence
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7

Tuslinah, Lilis, Anna Yuliana, Dian Arisnawati, and Lina Rahmawati Rizkuloh. "Comparison of Color Change to pH Range and Acid-Base Titration Indicator Precision Test of Multiple Ethanol Extracts." Trends in Sciences 19, no. 1 (2021): 1446. http://dx.doi.org/10.48048/tis.2022.1446.

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Natural indicators using anthocyanin compounds can be an alternative to synthetic indicators on acid-base titration because anthocyanin is an organic compound that is unstable with changes in pH. The extraction was carried out with ethanol because the compounds of anthocyanin were polar. This study was to ensure an ethanol extract of some plants could be used as an acid-base indicator that had a pH range of color change and the value of the equality parameter was not significantly different from the phenolphthalein indicator. The research method is to collect research journals on making natura
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8

de Silva, A. Prasanna, Saliya A. de Silva, Aruna S. Dissanayake, and K. R. A. Samankumara Sandanayake. "Compartmental fluorescent pH indicators with nearly complete predictability of indicator parameters; molecular engineering of pH sensors." Journal of the Chemical Society, Chemical Communications, no. 15 (1989): 1054. http://dx.doi.org/10.1039/c39890001054.

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Al-Husseini, Zaid Noor Obaid. "A Literature Review on the Indicators in Precipitation." American International Journal of Sciences and Engineering Research 2, no. 1 (2019): 1–8. http://dx.doi.org/10.46545/aijser.v2i1.26.

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Анотація:
Our literature includes information and explanation for indicators in chemical reactions and principle of its using which represented by (types of indicators ,pH of indicators , instrumental precipitation,…) , principles of precipitation by indicator , methods of precipitation by indicator ,types of indicators for precipitation, conditions of precipitation.
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Patel, Harsh, Sudarshan Seshadri, and J. R. Parvathi. "Edible Bioplastic with Natural pH Indicators." International Journal of Current Microbiology and Applied Sciences 6, no. 7 (2017): 1569–72. http://dx.doi.org/10.20546/ijcmas.2017.607.188.

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Більше джерел

Дисертації з теми "PH indicators"

1

Heger, Richard. "Sledování změny pH v systému fázově separovaných hydrogelů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2018. http://www.nusl.cz/ntk/nusl-376804.

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This thesis pursues monitoring of pH changes and description of properties in phase–separated hydrogels prepared by interaction of polyelectrolyte and oppositely charged surfactants. For the purposes of this work, all hydrogels were prepared by the interaction of hyaluronan with Septonex. All hydrogels were exposed to pH changes (4–9). Changes in pH were being monitored using spectroscopic indicators, methyl orange, methyl red, bromothymol blue and phenolphtalein. The pre– and post– pH changes in properties were compared using rheological methods. Additional information was gathered through th
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2

Thomas, Erin J. "Diatoms and invertebrates as indicators of pH in wetlands of the south-west of Western Australia." Thesis, Curtin University, 2007. http://hdl.handle.net/20.500.11937/1065.

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Анотація:
Increased groundwater usage, rainfall decline and activities such as mining have resulted in the acidification of certain wetlands in the south-west of Western Australia. This study investigated the influence of pH, the factor most commonly associated with acidification, on the invertebrate and diatom community structure of 20 wetlands in the south-west region of Western Australia. Few studies in Western Australia have investigated both biotic groups, particularly in relation to pH. Consequently, this study examined the comparative sensitivity of the two biotic groups to pH in order to identif
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3

Thomas, Erin J. "Diatoms and invertebrates as indicators of pH in wetlands of the south-west of Western Australia." Curtin University of Technology, Division of Science and Engineering, Dept. of Engineering Biology, 2007. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=17846.

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Анотація:
Increased groundwater usage, rainfall decline and activities such as mining have resulted in the acidification of certain wetlands in the south-west of Western Australia. This study investigated the influence of pH, the factor most commonly associated with acidification, on the invertebrate and diatom community structure of 20 wetlands in the south-west region of Western Australia. Few studies in Western Australia have investigated both biotic groups, particularly in relation to pH. Consequently, this study examined the comparative sensitivity of the two biotic groups to pH in order to identif
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4

Waleed, Nafea Al-Qaysi Wafaa [Verfasser], and Axel [Akademischer Betreuer] Dürkop. "New Luminescent Europium Complexes as Indicators and in Sensors for pH in Biosamples and Water Samples / Wafaa Waleed Nafea Al-Qaysi ; Betreuer: Axel Dürkop." Regensburg : Universitätsbibliothek Regensburg, 2018. http://d-nb.info/1172071802/34.

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5

Arenas, Ana Maria Zetty. "Filme biodegradável à base de fécula de mandioca como potencial indicador de mudança de pH." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-12032013-150645/.

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A cada dia é mais crescente a necessidade e interesse no desenvolvimento de embalagens competitivas e com maior valor agregado. Visando atender a necessidade de consumidores cada vez mais exigentes e preocupados com o meio ambiente, este trabalho propôs o uso do pigmento natural antocianina no desenvolvimento de filmes biodegradáveis para potencial uso como embalagem inteligente, indicadora de mudança de pH. Os filmes foram elaborados pela técnica de casting tendo como formulação base fécula de mandioca (Manihot esculenta Crantz), argila esmectita sódica, glicerol, etanol e água, e incorporado
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6

Schwamborn, Miriam. "Establishment of a fluorescence assay for characterization of protein-mediated vesicle fusion and acidification." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2017. http://hdl.handle.net/11858/00-1735-0000-0023-3E83-7.

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7

Green, Heather F. "Casting no shadow : overlapping soilscapes of European-Indigenous interaction in northern Sweden." Thesis, University of Stirling, 2012. http://hdl.handle.net/1893/13133.

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Анотація:
The Sámi’s past activities have been documented historically from a European perspective, and more recently from an anthropological viewpoint, giving a generalised observation of the Sámi, during the study period of AD200-AD1800, as semi-nomadic hunter gatherers, with several theories suggesting that interaction with Europeans, through trade, led to the adoption of European activities by certain groups of the Sámi (Eiermann, 1923; Paine, 1957; Manker and Vorren, 1962; Bratrein, 1981; Mathiesen et al, 1981; Meriot, 1984). However, there is almost no information on the impact the Sámi had on the
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Nentvichová, Aneta. "Jednorázový sensor amoniaku pro inteligentní obaly." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2021. http://www.nusl.cz/ntk/nusl-449761.

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Анотація:
This diploma thesis is focused on the problematic of the smart packaging and deals with the preparation of disposable ammonia sensors/indicators and the subsequent color measurement of prepared sensors/indicators using the CIE L* a* b* color space. The theoretical part of the diploma thesis focuses on active and intelligent packaging, using ammonia sensors/indicators. The emphasis is placed on the main components of the sensor/indicator, i.e., chitosan as a polymer and curcumin as a dye. The theoretical part also includes the problematic of meat degradation, which plays a very important role i
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Bowen, Martina E. "I. Use of 9-methylfluorene as an indicator for organometallic titrations II. Synthesis of a branched polyethylene glycol linker for peptide ligands III. Synthesis of a linker for peptide ligands and a study of its pH sensitivity." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290107.

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Анотація:
This work details the synthesis of some useful organic molecules: (I) 9-Methylfluorene was tested as an indicator in the titration of commonly used organometallic reagents. This indicator is readily prepared in three steps from fluorenone. In THF solution the deprotonated indicator is red and exhibits a sharp endpoint. The highly basic reagents sec-butyllithium and tert -butyllithium can be titrated in ether solution, where the color of the deprotonated indicator is yellow. (II) A branched, polyethylene glycol based linker for peptide ligands was designed and synthesized. The linker needed to
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10

PANTINI, SARA. "Analysis and modelling of leachate and gas generation at landfill sites focused on mechanically-biologically treated waste." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2013. http://hdl.handle.net/2108/203393.

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Despite significant efforts have been directed toward reducing waste generation and encouraging alternative waste management strategies, landfills still remain the main option for Municipal Solid Waste (MSW) disposal in many countries. Hence, landfills and related impacts on the surroundings are still current issues throughout the world. Actually, the major concerns are related to the potential emissions of leachate and landfill gas into the environment, that pose a threat to public health, surface and groundwater pollution, soil contamination and global warming effects. To ensure environmenta
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Книги з теми "PH indicators"

1

Sabnis, R. W. Handbook of acid-base indicators. CRC Press, 2008.

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2

T, Sasaki Clarence, and Toohill Robert J, eds. 24-hour ambulatory pH monitoring for patients with suspected extraesophageal complications of gastroesophageal reflux: Indications and interpretations. Annals Publishing Co., 2000.

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3

Gillette, Marcia L. Using Acid-Base Indicators to Visually Estimate the Ph of Solutions. Chemical Education Resources, 1995.

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4

Handbook of Acid-Base Indicators. CRC Press, USA & Taylor & Francis Group, U.K., 2008.

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5

Taylor, Dr Tom, and Barbara Brown MSE. The Magic of pH: Your Ultimate Personal Health Indicator. Whole Life Whole Health, 2018.

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6

MacKenzie-Ross, Robert, Karen K. K. Sheares, and Joanna Pepke-Zaba. Pulmonary hypertension. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0100.

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Pulmonary hypertension (PH) is a haemodynamic and pathophysiological condition defined as mean pulmonary artery pressure ≥25 mm Hg at rest, assessed by right-heart catheterization (8–20 mm Hg is considered normal). A pulmonary capillary wedge pressure measurement of >15 mm Hg indicates a significant pulmonary venous component. PH is associated with a variety of causes. The current PH classification is helpful in understanding the different etiological, pathological, and treatment approaches.
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Farrer, Leslie. Estimating the Ph of Household Products Using Red Cabbage Extract as an Indicator. Chemical Education Resources, 1992.

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8

Corriveau, Anthony F. *. Application of a pH indicator to the mixing produced by a fountain in a container. 1989.

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9

Joynt, Gavin M., and Gordon Y. S. Choi. Blood gas analysis in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0072.

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Arterial blood gases allow the assessment of patient oxygenation, ventilation, and acid-base status. Blood gas machines directly measure pH, and the partial pressures of carbon dioxide (PaCO2) and oxygen (PaO2) dissolved in arterial blood. Oxygenation is assessed by measuring PaO2 and arterial blood oxygen saturation (SaO2) in the context of the inspired oxygen and haemoglobin concentration, and the oxyhaemoglobin dissociation curve. Causes of arterial hypoxaemia may often be elucidated by determining the alveolar–arterial oxygen gradient. Ventilation is assessed by measuring the PaCO2 in the
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Частини книг з теми "PH indicators"

1

Noble, Taryn L., Bernd Lottermoser, and Anita Parbhakar-Fox. "pH Testing Methods for Sulfidic Mine Wastes." In Environmental Indicators in Metal Mining. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42731-7_11.

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Noble, Taryn L., and Bernd Lottermoser. "Modified Abrasion pH and NAGpH Testing of Minerals." In Environmental Indicators in Metal Mining. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42731-7_12.

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Smol, John P. "Chrysophycean microfossils as indicators of lakewater pH." In Diatoms and Lake Acidity. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4808-2_19.

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Battarbee, Richard W., John P. Smol, and Jouko Meriläinen. "Diatoms as indicators of pH: An historical review." In Diatoms and Lake Acidity. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4808-2_2.

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Bizzarri, Ranieri. "The Proton Sensitivity of Fluorescent Proteins: Towards Intracellular pH Indicators." In Fluorescent Proteins II. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/4243_2011_30.

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Baldini, F. "Optical Fiber pH Sensor with the Indicators Covalently Bound on Solid Supports." In Laser in der Technik / Laser in Engineering. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84736-3_120.

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Wangbai, Ma, Zhang Zhujun, and W. Rudolf Seitz. "Poly(vinyl alcohol)-Based Indicators for Optical pH and Mg(II) Sensing." In ACS Symposium Series. American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0403.ch018.

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Plieth, C., B. Sattelmacher, A. J. Trewavas, U. P. Hansen, and M. R. Knight. "Engineering plants expressing calcium and pH indicators in the cytoplasm and the apoplast." In Plant Nutrition. Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47624-x_121.

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Heberle, Joachim, and Norbert A. Dencher. "Proton Transfer in the Light-Harvesting Protein Bacteriorhodopsin: An Investigation with Optical pH-Indicators." In NATO ASI Series. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3444-0_15.

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Duque-Sarango, Paola, Cristina Cárdenas, Bryam Crespo, Christian Mera-Parra, and Sebastián Cedillo. "Smart Waters: Harnessing Machine Learning to Predict Water Quality in a Tropical Andean Watershed." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-87065-1_24.

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Abstract This study is based on the application of machine learning to compare regression tree models based on data with a reduced set of parameters using the National Sanitation Foundation Index (WQI NSF) to estimate water quality in the Yanuncay River watershed. Physical, chemical, and biological parameter data were collected from the watershed and equations derived from curve fits were used to calculate the WQI NSF. The results showed that the regression random forest model trained with three parameters: fecal coliforms, pH and nitrates, was the most suitable option. This model demonstrated
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Тези доповідей конференцій з теми "PH indicators"

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Sousa, I., A. Kuznetsova, T. Galvão, et al. "The Use of Nanostructured Materials Loaded with pH Indicating Molecules for Corrosion Sensing." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09666.

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Abstract In this work we report the synthesis of different materials for immobilization of well-known pH indicators, to be used as additives in coatings for corrosion sensing: inorganic materials such as layered double hydroxides, silica nanocapsules and polymeric microcapsules (chitosan). The materials obtained were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopies. Furthermore, the release profile of the obtained materials was performed using UV-Visible spectrophotometry under conditions relevant for the onset of corrosion processe
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Olabisi, Olagoke, Amer Jarragh, Yousef Khuraibut, and Ashok Mathew. "Identifying Key Performance Indicators for Corrosion in Oilfield Water Handling Systems." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4348.

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Abstract Key performance indicators are used to track the efficiency of the prevailing corrosion risk management strategy, namely, the integration of corrosion, process monitoring, inspection, mitigation, environmental control, and materials management. In an earlier paper1, a methodology was outlined for the use of a single key performance indicator, namely, the corrosion rate, in tracking monitoring strategy, mitigation strategy, and pipeline integrity. This paper seeks to identify other key performance indicators. At Kuwait Oil Company (KOC), internal corrosion monitoring activities are car
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Wilhelm, M., M. Reyes, A. Sushkova, et al. "Hexacyanoferrate-intercalated Layered Double Hydroxides as Solution for Detection of Early-stage Corrosion of Steel." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16740.

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Abstract The in-situ detection of corrosion and failures represents an important stage in the procedures of maintenance of metallic structures. The use of nanotechnology embedded in the protective coatings is a promising way to develop user-friendly and cost-effective corrosion detection systems and has to be explored by the coating industry. Several groups have already reported the use of coating systems containing pH indicators and fluorescent probes to detect the corrosion of the substrates. The interest of encapsulating these indicators to prevent undesired interactions and leaching from t
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Li, Wenyan, and Luz M. Calle. "Controlled Release Microcapsules for Smart Coatings." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07228.

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Abstract Corrosion in service is a serious problem for most military operations. The cost of corrosion includes manpower, materials used to repair corrosion damage, equipment downtime, and reduced capacity due to corrosion damage. A considerable number of corrosion problems can be solved by coatings. However, even the best protective coatings can fail by allowing the slow diffusion of oxygen and moisture to the metal surface. Corrosion accelerates when a coating delaminates. Often, the problems start when microscopic nicks or pits on the surface develop during manufacturing or through wear and
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Lato, Alina, Florin Crista, Iaroslav Lato, Alina Neacsu, and Laura Crista. "THE EFFECT OF FOLIAR FERTILIZATION WITH UREA UPON THE CONTENT OF MACRONUTRIENTS IN CAMBIC CHERNOZEM." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s12.30.

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Sunflower and maize are two crops of particular importance, especially in the current context of the food crisis, cultivated on large areas worldwide, used both for animal and human nutrition. This study proposed to test the effectiveness of several types of foliar fertilizers with urea, for the two previously mentioned crops, in the pedo-climatic conditions of West of Romania, and the type of soil chosen for experimentation was Cambic Chernozem. The chemical compounds used for fertilizing crops were different urea solutions. As for the pH of urea solutions, they all have a value of 7.5 pH uni
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Grigorova-Pesheva, Bilyana, Boyka Malcheva, and Biser Hristov. "SEASONAL DYNAMICS IN THE MICROBIOLOGICAL STATUS OF FOREST SOILS FROM THE TERRITORY OF VITOSHA NATURE PARK." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.35.

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The health, richness, and variety of microbial life in soil represent basic indicators for the evaluation and surveillance of forest ecosystem vitality. The vital role these microorganisms occupy in forest ecosystems underscores the necessity to in-depth assess and monitor their populations within soil habitats. Aiming to deepen our comprehension of microbial communities across different soils and soils horizons, we conducted an investigation of 22 soil profiles situated within the territory of Vitosha Nature Park. The investigation was carried out in one year period. We took samples from each
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7

Sharma, Dia G. "DIY pH Indicator." In 2024 IEEE Integrated STEM Education Conference (ISEC). IEEE, 2024. http://dx.doi.org/10.1109/isec61299.2024.10664771.

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Kaczerewska, O., I. Sousa, J. Figueiredo, R. Martins, S. Loureiro, and J. Tedim. "Silica Nanocapsules Based on Gemini Surfactant as Environmentally Friendly Nanocontainers for Corrosion Protection in Seawater." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16741.

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ABSTRACT Encapsulation of active agents (corrosion inhibitors, pH indicators) has been described as a promising approach to impart controlled release and limit detrimental interactions between the active agents and the coating matrix. Mesoporous silica nanocapsules (SiNC) are engineered materials widely used for encapsulation. One synthesis route reported in the literature for these materials is based on a one-step emulsification process (oil-in-water microemulsion), using hexadecyltrimethylammonium bromide (CTAB) as emulsifier of the microemulsion. However, CTAB is also a source of toxicity t
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Obraztsova, Svetlana, Olga Bondareva, Dariya Khodasevich, Olga Meshcheryakova, Tatiyana Sviridova, and Olga Korneeva. "DEVELOPMENT OF A METHOD FOR PRODUCING A FEED ADDITIVE FROM THE GREEN MASS OF AMARANTH." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s25.22.

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A comparative assessment of the chemical composition of amaranth green mass cultivated in 2022 and 2023 was carried out. It was revealed that the content of nitrates, tannins and phytates in the 2023 harvest exceeded these indicators compared to the 2022 harvest by 3.3, 1.4 and 4 times, respectively. The amount of oxalic acid was 16 times lower, and that of tannins did not exceed the maximum permissible concentration of 0.5%. At the same time, the content of proteins and fats decreased by 12.6 and 31.6%, respectively, and the amount of fiber increased by 8.5%. The process of enzymatic treatmen
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Tabatadze, M., L. Shavliashvili, G. Kuchava, E. Shubladze, and E. Elizbarashvili. "STATISTICAL ANALYSIS OF HYDROCHEMICAL PARAMETERS OF THE RACHA-LECHKHUMI AND KVEMO SVANETI REGIONS NATURAL WATERS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s11.14.

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Water resource protection is significant for Georgia since the intensity of anthropogenic impact on the Georgian ecosystem has been substantially increased over the recent period, at the same time, several diseases with high risk for population life have been considerably increased, as well. The work provides the physical-chemical and hydrochemical characteristics of rivers, artesian and spring waters available at the territories adjacent to the arsenic processing enterprises in the region for 2021-2024. pH, electric conductivity, biogenic substances, principal ions, mineralisation, total arse
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Звіти організацій з теми "PH indicators"

1

Livingston, R. R., L. Baylor, and G. G. Wicks. Development of novel Sol-Gel Indicators (SGI's) for in-situ environmental measurements: Part 1, Program and a new pH Sol-Gel Indicator. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6636793.

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Livingston, R. R., L. Baylor, and G. G. Wicks. Development of novel Sol-Gel Indicators (SGI`s) for in-situ environmental measurements: Part 1, Program and a new pH Sol-Gel Indicator. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10143056.

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Leis. L51838 Cyclic Stress Strain Behavior and SCC Susceptibility of Line Pipe Steels. Pipeline Research Council International, Inc. (PRCI), 2001. http://dx.doi.org/10.55274/r0010355.

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This report presents results of a preliminary evaluation of a mechanical property that has the potential to correlate with susceptibility to Stress-corrosion cracking (SCC). This mechanical property measures the evolution of the microplastic response of line pipe steels, which underlies high pH SCC, and is believed by many to be essential for near-neutral SCC. If such a property can be proven to reflect susceptibility to SCC, operators could better contain maintenance costs and specify steels for new pipelines that are inherently resistant to SCC. Limited experimentation using X60 line-pipe st
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4

van Delft, Bas, Joost Cruijsen, Tom Harkema, Martin Knotters, and Pieter Dijk. pH-profielen als indicator voor zuurbuffering in de bodem. Wageningen Environmental Research, 2024. http://dx.doi.org/10.18174/640483.

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5

Hennekens, Stephan, Jan Holtland, Nils van Rooijen, Wieger Wamelink, and Wim Ozinga. Planten als indicatoren voor pH en GVG : Een vergelijking van het ITERATIO- en Wamelink-indicatorsysteem voor pH en GVG. Wettelijke Onderzoekstaken Natuur & Milieu, 2022. http://dx.doi.org/10.18174/564312.

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van Rooijen, Nils, Stephan Hennekens, Marlies Sanders, Jan Holtland, Wieger Wamelink, and Wim Ozinga. Planten als indicatoren voor pH en GVG II : Een vergelijking van het ITERATIO- en Wamelink-indicatorsysteem voor pH en GVG vanuit ecologisch perspectief. WOT Natuur & Milieu, 2024. http://dx.doi.org/10.18174/670299.

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Hughes, James, Robert Emmott, Evan Raskin, Brian Witcher, and Wendy Wright. Protocol narrative: Long-term discrete water quality monitoring at Big South Fork National River and Recreation Area, Blue Ridge Parkway, and Obed Wild and Scenic River. National Park Service, 2018. https://doi.org/10.36967/2258269.

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Under the mandate of the National Parks Omnibus Management Act (1998), the National Park Service (NPS) developed a natural resources Inventory and Monitoring (I&M) program as part of a comprehensive effort to identify key natural resources within the National Park system and to provide long term monitoring of the integrity of those resources. The NPS has grouped parks into 32 I&M networks based on ecological similarity and geographic proximity. The Appalachian Highlands Inventory and Monitoring Network (APHN) includes four NPS units: Big South Fork National River and Recreation Area (B
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8

Parkins. L51743 Stress Corrosion Cracking of Pipelines in Contact with Near-Neutral pH Solutions. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010322.

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While much has been learned about low pH stress corrosion cracking in the decade since it was recognized, a review of the published papers and reports since the last overview of the subject in 1992 indicates that there is still much to be understood about this matter. Most of the laboratory studies have involved dilute solutions based upon those found in the vicinity of cracks in operating lines, but the possible role of bacteria, for which there is supporting field evidence, has not received systematic study. The trans-granular service cracking has been reproduced in the laboratory, most read
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Lemly, Joanna, Lauren Laughlin, and Gabrielle Smith. Inventory of fens and rare fen-indicator plant occurrences at Grand Teton National Park and John D. Rockefeller, Jr. Memorial Parkway. National Park Service, 2025. https://doi.org/10.36967/2313526.

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Fens are groundwater-fed, peat-accumulating wetlands that form where the accumulation of organic material exceeds decomposition. While fens are common at northern latitudes, fens in the Rocky Mountains are relatively rare, small features that support numerous rare plant species. Little is known about fens in Grand Teton National Park (GRTE) and John D. Rockefeller, Jr. Memorial Parkway (JODR). While GRTE and JODR are managed for natural resource preservation and recreation, the parks have a history of other land uses and have seen increasing visitors in recent years. To better manage fen resou
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Chen. PR-378-083601-R01 Effect of Pressure Fluctuations on Growth Rate of Near-Neutral pH SCC. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010798.

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This report summarizes the work completed in Year One of the three-year project: PRCI SCC-2-12 Effect of Pressure Fluctuations on Growth Rate of Near-Neutral pH SCC. The investigation in Year One has been primarily focused on the validation of the software being developed for crack growth and remaining life prediction using SCADA Data. A total of 9 pressure spectra, 4 for oil pipelines and 5 for gas pipelines, have been collected and used as inputs for the software. It was found that a pressure spectrum can be quantified using a parameter termed as Spectra Factor to represent the severity of l
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