Relevant bibliographies by topics / Malic acid

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Malic acid'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 July 2025

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Journal articles on the topic "Malic acid"

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Camarasa, Carole, Frédérique Bidard, Muriel Bony, Pierre Barre, and Sylvie Dequin. "Characterization of Schizosaccharomyces pombe Malate Permease by Expression in Saccharomyces cerevisiae." Applied and Environmental Microbiology 67, no. 9 (2001): 4144–51. http://dx.doi.org/10.1128/aem.67.9.4144-4151.2001.

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ABSTRACT In Saccharomyces cerevisiae, l-malic acid transport is not carrier mediated and is limited to slow, simple diffusion of the undissociated acid. Expression in S. cerevisiae of the MAE1 gene, encodingSchizosaccharomyces pombe malate permease, markedly increased l-malic acid uptake in this yeast. In this strain, at pH 3.5 (encountered in industrial processes),l-malic acid uptake involves Mae1p-mediated transport of the monoanionic form of the acid (apparent kinetic parameters:V max = 8.7 nmol/mg/min;Km = 1.6 mM) and some simple diffusion of the undissociated l-malic acid (Kd = 0.057 min−
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Kuzmina, N. S., S. V. Portnova, and E. L. Krasnykh. "Esterification of malic acid on various catalysts." Fine Chemical Technologies 15, no. 2 (2020): 47–55. http://dx.doi.org/10.32362/2410-6593-2020-15-2-47-55.

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Objectives. The study aims to identify the optimal choice of an effective catalyst for the esterification of malic acid to produce esters of high purity. Methods. To determine the qualitative and quantitative composition of reaction masses, the following analysis methods were used: mass-spectroscopy (using FinniganTrace DSQ device with NIST 2002, Xcalibur 1.31 Sp 5 database) and gas–liquid chromatography (using the Kristall 2000M software and hardware complex). Results. Esters of malic acid and butyl alcohol of normal structure were synthesized using the following catalysts: sulfuric, orthopho
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Nunes, Fabrize Caroline, Mário Miyazawa, and Marcos Antonio Pavan. "Organic acid effect on calcium uptake by the wheat roots." Brazilian Archives of Biology and Technology 52, no. 1 (2009): 11–15. http://dx.doi.org/10.1590/s1516-89132009000100002.

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This work evaluated the effect of the natural organic acids on the uptake of Ca by the wheat roots in a hydroponic solution. The following organic acids were evaluated: citric, oxalic, tartaric, malic, malonic, maleic, DL-malic, p-hydroxybenzoic, aconitic, and salicilic. The organic acids neither enhanced the root growth nor increased Ca uptake. The salicilic and malic acids were highly toxic and decreased the root growth. The citric, tartaric, maleic, aconitic, and salicilic decreased the Ca uptake by the roots due to their higher capacity to form the stable complexes with Ca in solution at p
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Helavi, V. B., S. B. Solabannavar, R. S. Salunkhe, and R. B. Mane. "Microwave-Assisted Solventless Pechmann Condensation." Journal of Chemical Research 2003, no. 5 (2003): 279–80. http://dx.doi.org/10.3184/030823403103173796.

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Solventless Pechmann condensation of various phenols with crotonic acid, malic acid, fumaric acid or maleic acid, using sulfuric acid or anhydrous zinc chloride under microwave irradiation yielded coumarins and chromanones.
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Salama, A. M., J. R. Hicks, and J. F. Nock. "Sugar and Organic Acid Changes in Stored Onion Bulbs Treated with Maleic Hydrazide." HortScience 25, no. 12 (1990): 1625–28. http://dx.doi.org/10.21273/hortsci.25.12.1625.

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Maleic hydrazide (MH)-treated and untreated (control) onion (Allium cepa L.) bulbs were stored for up to 20 weeks at 0, 15, or 30C with relative humidities (RH) of 40% or 60%. MH and RH had minimal effect on sugars and organic acids in inner or outer scale leaves that were analyzed at S-week intervals. Concentrations of fructose, glucose, and total sugars were higher in inner than outer leaves of the bulb, while the reverse was true for sucrose. Total sugars, glucose, and fructose decreased and sucrose increased with higher storage temperature. Total sugars and glucose decreased with increased
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Elkins, Edgar R., and John R. Heuser. "Detection of Adulteration in Apple Juice by L-Malic/Total Malic Acid Ratio: Collaborative Study." Journal of AOAC INTERNATIONAL 77, no. 2 (1994): 411–15. http://dx.doi.org/10.1093/jaoac/77.2.411.

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Abstract L-Malic acid is the predominate acid in pure apple juice and no D-malic acid should be present. Synthetic malic acid contains 50% D-malic acid, is inexpensive, and can be used to create nonauthentic apple juice. L-Malic/total malic ratios of 0.9 or less are indicative of a nonauthentic sample. Fourteen laboratories participated in a collaborative study to determine the L-malic/total malic acid ratio in apple juice. Ten samples of apple juice were sent to each laboratory. Authenticity of the samples varied from 0 to 100%. The coefficients of variation in all cases were acceptable, i.e.
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Chi, Zhuoheng, Luwei Wang, Qiankun Hu, et al. "The MADS-Box Transcription Factor EjAGL18 Negatively Regulates Malic Acid Content in Loquat by Repressing EjtDT1." International Journal of Molecular Sciences 26, no. 2 (2025): 530. https://doi.org/10.3390/ijms26020530.

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Malic acid is the major organic acid in loquat fruit, contributing to the sourness of fruit and affecting fruit flavor. However, the transcriptional regulation of malic acid in loquat is not well understood. Here, we discovered a MADS-box transcription factor (TF), EjAGL18, that regulated malic acid accumulation in loquat. EjAGL18 is a nucleus-localized TF without transcriptional activity. The expression of EjAGL18 increased during fruit ripening, opposite to the accumulation pattern of malic acid in loquat. The transient overexpression of EjAGL18 in loquat fruit downregulated malic acid accum
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Frioni, Tommaso, Riccardo Collivasone, Ginevra Canavera, Matteo Gatti, Mario Gabrielli, and Stefano Poni. "Identifying the best parameters to determine genotype capability to retain adequate malic acid at harvest and in final wines." OENO One 57, no. 2 (2023): 247–56. http://dx.doi.org/10.20870/oeno-one.2023.57.2.7428.

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Maintaining optimal grape acidity at harvest is one of the most complicated challenges under climate change pressures, especially in early ripening cultivars. Warming trends are compressing vine phenology and fostering berry malic acid respiration. In this work, over four years, we evaluated yield components and fruit ripening in two local varieties in the Colli Piacentini, Ortrugo (ORT) and Barbesino (BRB). Our goal was to evaluate their ability to maintain satisfying acidity at harvest and understand the limits and features of the genetic control over organic acid degradation during ripening
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Sato, Kei, Fumikazu Ikemori, Sathiyamurthi Ramasamy, et al. "Four- and Five-Carbon Dicarboxylic Acids Present in Secondary Organic Aerosol Produced from Anthropogenic and Biogenic Volatile Organic Compounds." Atmosphere 12, no. 12 (2021): 1703. http://dx.doi.org/10.3390/atmos12121703.

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To better understand precursors of dicarboxylic acids in ambient secondary organic aerosol (SOA), we studied C4–C9 dicarboxylic acids present in SOA formed from the oxidation of toluene, naphthalene, α-pinene, and isoprene. C4–C9 dicarboxylic acids present in SOA were analyzed by offline derivatization gas chromatography–mass spectrometry. We revealed that C4 dicarboxylic acids including succinic acid, maleic acid, fumaric acid, malic acid, DL-tartaric acid, and meso-tartaric acid are produced by the photooxidation of toluene. Since meso-tartaric acid barely occurs in nature, it is a potential
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Cabelli, Diane E., and Benon H. J. Bielski. "A Pulse Radiolysis Study of Some Dicarboxylic Acids of the Citric Acid Cycle. The Kinetics and Spectral Properties of the Free Radicals Formed by Reaction with the OH Radical." Zeitschrift für Naturforschung B 40, no. 12 (1985): 1731–37. http://dx.doi.org/10.1515/znb-1985-1223.

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Abstract The reactions between the OH radical and fumaric acid, maleic acid, malic acid and succinic acid were studied using pulse radiolysis techniques. The rates of reaction, the absorption spectra of the resultant free radicals and the rates of disappearance of those radicals were determined as a function of pH over virtually the entire pH range (pH 2-14)
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Dissertations / Theses on the topic "Malic acid"

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Mitsch, Michael James. "Characterization of the NADP+-dependent malic enzyme of Sinorhizobium (Rhizobium) meliloti and investigations into the requirements of malate uptake and malic enzyme activity in bacteroids /." *McMaster only, 2001.

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Pounder, Ryan J. "The synthesis and ring-opening polymerisation of novel cyclic esters from malic acid." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/34607/.

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The work in this thesis is directed towards the preparation of cyclic ester monomers using malic acid as a renewable resource. Their subsequent controlled ring-opening polymerisation (ROP) to yield functionalised poly(ester)s is studied and application in micellar self-assembly reported. Chapter 1 reviews the many synthetic strategies that have been employed in the preparation of functional glycolides, lactides, ε-caprolactones, δ-valerolactones and β-propiolactones. Their subsequent polymerisation and applications are also discussed. Chapter 2 describes the improved synthesis of 3-(S)- [(benz
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Hahn, Christian Joachim [Verfasser]. "Polyesters Based on Malic Acid - Pendant Hydroxyl Groups as Distinctive Feature for Versatile Modifications / Christian Joachim Hahn." Aachen : Shaker, 2013. http://d-nb.info/1051574692/34.

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Sandéhn, Alexandra. "Capillary Organic Electronic Ion Pump for Delivering Malic Acid - Towards Better Understanding of Drought Tolerance in Tropical Plants." Thesis, Linköpings universitet, Laboratoriet för organisk elektronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-178191.

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Delivery of biologically relevant ions such as drugs, neurotransmitters and hormones have been recognized as powerful a tool to control physiology of animals and plants for research purposes and practical applications. In the plant research community, ions are most commonly delivered as part of a solvent by soaking, spraying, pipetting or by adding to the soil. These methods have low control of the delivery dynamics and quantity of ion uptake. These issues motivated the development of the Organic Electronic Ion Pump (OEIP), which delivers only ions of interest by applying an external electric
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Coetzee, Zelmari. "Site and vintage response of malic and tartaric acid in Vitis vinifera L. cv’s Cabernet Sauvignon and Sauvignon blanc." Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85736.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Acids are one of the major components that originate largely from the berry, that are found in wine, and that influence the sensory perception. The presence of organic acids in adequate concentrations in the grape berry, of which tartaric- and malic acid are the main organic acids present, is important as this determines the potential of a must to produce a good and stable wine. The effect of temperature on the organic acid content of the must is widely discussed with higher temperatures in general being associated wi
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Horáček, Pavel. "Studium produkce extracelulárních polymerů pomocí mikroorganismu Aureobasidium pullulans." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216967.

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The diploma thesis is focused on the study of the influence of cultivation conditions and arrangement for the production of extracellular polymeric substances by using yeast-like microorganism Aureobasidium pullulans. In the theoretical part a brief description of A. pullulans, its use in biotechnology and produced exobiopolymers, especially pullulan and poly-L-malic acid are presented. The first aim of the experimental part was to set the most appropriate cultivation conditions for A. pullulans CCM 8182. Growth and production properties in optimum conditions were compared with cultivation on
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Al-Hossain, Md Shahriar. "Study of superconducting and electromagnetic properties of un-doped and organic compound doped MgB₂ conductors." Access electronically, 2008. http://ro.uow.edu.au/theses/90.

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Kniel, Kalmia Elisabeth. "Evaluation of chemical treatments and ozone on the viability of Cryptosporidium parvum oocysts in fruit juices." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27243.

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<i>Cryptosporidium parvum</i> is a protozoan parasite historically associated with waterborne and more recently foodborne outbreaks of diarrheal illness. Contamination of certain foods, such as unpasteurized apple cider, with infective oocysts may occur as oocysts are shed in the feces of common ruminants like cattle and deer that graze in and around orchards. Cryptosporidiosis can result in a severe illness for previously healthy individuals and a life-threatening illness in immunocompromised individuals. Disease occurs after the ingestion of small infective oocysts (4 to 5 mm in size). The r
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Volschenk, Heinrich. "Characterisation of L-malic acid metabolism in strains of Saccharomyces and the development of a commercial wine yeast strain with an efficient malo-ethanolic pathway." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52728.

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Dissertation (PhD)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: L-Malic and tartaric acid are the most prominent organic acids in wine and playa crucial role in winemaking processes and wine quality, including the organoleptic quality and the physical, biochemical and microbial stability of wine. The production of premium wines depends on the oenologist's skill to accurately adjust wine acidity to obtain the optimum balance with other wine components to produce wine with optimum colour and flavour. Strains of Saccharomyces, in general, rarely degrade L-malic acid completely in
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Duchêne, Eric. "Une exploration des possibilités génétiques pour l'adaptation de la vigne au changement climatique." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAJ059/document.

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Les effets du changement climatique ont d’ores et déjà été observés sur la vigne : avancement des stades de développement, augmentation des teneurs en alcool des vins, baisse excessive de leur acidité. Une des voies d’adaptation possible de la viticulture est la création de nouvelles variétés. J’ai caractérisé la variabilité phénotypique de 120 descendants de croisements entre Riesling (RI) et Gewurztraminer (GW) pour (1) les stades de développement, décrits à l’aide de sommes de températures (2) la capacité à accumuler des sucres dans les raisins (3) les paramètres de l’acidité des raisins. L
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Books on the topic "Malic acid"

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M, Birkner Katherine, ed. Malic acid and magnesium for fibromyalgia and chronic pain syndrome. 5th ed. Pain & Stress Publications, 1996.

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Gawroński, Jacek. Tartaric and malic acids in synthesis: A source book of building blocks, ligands, auxiliaries, and resolving agents. Wiley, 1999.

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Huang, Hui Yu. The magic of lactic acid bacteria. Wan Li, 2003.

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Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.), ed. Application of the MAGIC model to the Glacer Lakes catchments. U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1994.

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Reuss, J. O. Application of the MAGIC model to the Glacer Lakes catchments. U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1994.

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Alan, Jenkins, and Institute of Hydrology, eds. Modelling surface water acidification in the UK: Application of the MAGIC model to the Acid Waters Monitoring Network. Institute of Hydrology, 1997.

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Patterson, Robert J. Mine closure planning at Equity Silver Mines Ltd. IN Gadsby, J. W.; Malick, J. A.; Day, S. J., editors, Acid mine drainage--Designing for closure. s.n, 1990.

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Higgs, Thomas W. ARD treatment plant sludge--Chemical stability and disposal considerations. IN Gadsby, J. W.; Malick, J. A.; Day, S. J., editors, Acid mine drainage--Designing for closure. s.n, 1990.

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Malic Acid & Magnesium for Fibromyalgia & Chronic Pain Syndrome. 7th ed. Pain & Stress Pubns, 1999.

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Pearson, Charles T. A comparison of the reactions between malic acid and malonic acid with sodium chlorite. 1996.

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Book chapters on the topic "Malic acid"

1

Bährle-Rapp, Marina. "Malic Acid." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_6255.

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Holze, Rudolf. "Ionic conductivities of malic acid diethylester." In Electrochemistry. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-49251-2_231.

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Schmollack, Marc, Lukas Hartmann, and Katrin Ochsenreither. "Microbial Production of Dicarboxylates: Succinic Acid, Malic Acid, and Itaconic Acid." In Handbook of Biorefinery Research and Technology. Springer Netherlands, 2024. http://dx.doi.org/10.1007/978-94-007-6724-9_79-1.

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Schmollack, Marc, Lukas Hartmann, and Katrin Ochsenreither. "Microbial Production of Dicarboxylates: Succinic Acid, Malic Acid, and Itaconic Acid." In Handbook of Biorefinery Research and Technology: Production of Biofuels and Biochemicals. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-7586-6_79.

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Hartmeier, Winfried. "Conversion of Fumaric Acid to Malic Acid in a Liquid-membrane Emulsion." In Immobilized Biocatalysts. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73364-2_19.

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Lüttge, U., and J. A. C. Smith. "Transport of Malic Acid in Cells of CAM Plants." In Biochemistry and Function of Vacuolar Adenosine-Triphosphatase in Fungi and Plants. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70320-1_20.

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Wohlfarth, Ch. "Surface tension of the mixture (1) water; (2) malic acid." In Supplement to IV/16. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75508-1_222.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of trinuclear copper(II) complex with malic acid." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 4. Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-62474-6_290.

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Gong, C. S., Ningjun Cao, Yan Sun, and G. T. Tsao. "Production of L-Malic Acid from Fumaric Acid by Resting Cells of Brevibacterium sp." In Seventeenth Symposium on Biotechnology for Fuels and Chemicals. Humana Press, 1996. http://dx.doi.org/10.1007/978-1-4612-0223-3_44.

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Kaya, Muammer. "Leaching of H2SO4, Citric Acid, and Malic Acid Leached Pb and Ag Residues (Electrohydrometallurgical Process)." In The Minerals, Metals & Materials Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-14685-5_8.

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Conference papers on the topic "Malic acid"

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Onache, Petronela Anca, Alina Florea, Dorin Ioan Sumedrea, and Ovidiu Tita. "CHEMOMETRIC PROFILE OF WHITE AND RED WINES FROM DIFFERENT AREAS OF ROMANIA." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s25.20.

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In this research, we studied wines from eleven wine regions of Romania (Stefanesti, Dragasani, Dealul Mare, Minis, Blaj, Babadag, Focsani, Tarnave, Silagiu, Iasi, Cotnari), but also for two years of different production (2019 and 2021), to observe their chemometric profile according to the geographical origin. The chemical composition was determined for 40 white wines and 34 red wines. The studied chemical parameters were alcohol concentration, wine density, total acidity, free and total sulfur dioxide, non-reducing dry extract, glucose and fructose, pH, organic acids (tartaric acid, malic and
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Wilson, David, Matthew Toole, and Christine Beaulne. "Inhibition of Calcium Oxalate Scale in Aqueous Systems." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09174.

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Abstract Calcium oxalate scale is a common problem encountered in the bleaching sequence in pulp and paper manufacture, alcohol production and sugar evaporators. Downtime due to cleaning of the hard deposit is expensive and leads to loss of production. This study compares the activity of two maleic acid type polymers with two phosphinocarboxylic acids and a phosphonocarboxylic acid over a range of calcium oxalate saturation indices.
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Quraishi, M. A., and V. Bhardwaj. "Inhibition of Metallic Corrosion by Some 2-Cinnamyl Imidazoline Salts under Vapor Phase Conditions." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03365.

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Abstract Four organic volatile corrosion inhibitors (VCIs) were synthesized using 2-cinnamyl imidazoline with various acids such as salicylic acid, maleic acid, nitrobenzoic acid and phthalic acid and evaluated as corrosion inhibitors of mild steel, brass and copper by weight loss method. Eschke test method, sodium chloride inoculation test method and sulfur dioxide (SO2) test method were also carried out to investigate the corrosion inhibiting effect of the compounds. All the investigated VCIs exhibited good inhibition efficiency (IE) for all the metals. Phthalate salt showed best result amon
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Quraishi, M. A. "Lauric Hydrazide Derivatives: New Class of Volatile Corrosion Inhibitors." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02319.

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Abstract The protection of metals against corrosion by means of volatile compounds is the most progressive method of fighting metallic corrosion. These inhibitors are used to protect metallic articles and equipment during storage and transportation. In view of this we have synthesized six organic volatile corrosion inhibitors (VCIs) using Lauric hydrazide with various acids such as cinnamic acid, succinic acid, nitrobenzoic acid, phthalic acid and maleic acid and evaluated their inhibiting action on corrosion of mild steel, copper, brass, zinc and aluminium by weight loss and potentiodynamic p
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Wyman, Donald P. "In Pursuit of Non-Phosphorous Corrosion Inhibitors for Cold Water Cooling Systems." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98217.

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Abstract An exploratory program was conducted to evaluate a number of polymers and carboxylic acid combinations with polymers as non-phosphorus containing, all organic corrosion inhibitors for cold water systems such as evaporative towers. The concentrations of treatment were approximately those which would obtain for current commercial formulations. There was a strong dependency of performance on the "aggressiveness" of the water, especially the conductivity. The polymers were adequate for non-aggressive waters, and one, polymaleic acid (as the sodium salt) performed reasonably in somewhat mo
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Amjad, Zahid. "Gypsum Scale Inhibitors Performance in the Presence of Impurities." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16707.

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Abstract In the present work a variety of polymers with different functional groups and molecular weight (MW) were tested as gypsum scale inhibitors. The polymers tested include: poly(acrylic acid) PAA; poly(maleic acid), PMA; poly(aspartic acid), PASP; poly(epoxysuccinic acid), PESA; carboxymethyl inulin (CMI-25); copolymers of maleic acid:sulfonated styrene, PMAS); maleic acid:vinyl pyrrolidone, PMVP. The results indicated that performance of polymers strongly depends on the polymer architecture. Based on the data collected, the polymers may be ranked as follows: PAA &amp;gt; PMA &amp;gt; PA
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Brenna, Andrea, Marco Ormellese, and Silvia Beretta. "Efficiency of Organic Compounds as Vcis for the Packaging of Carbon Steel Engine Elements in Automotive." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-15004.

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Abstract Carbon steel elements for motor engine assembly are produced in different companies typically settled far from the assembly plant. As corrosion must be avoided, condition of transportation are of paramount importance. VCIs are used in the packaging, applied of the polymer sheet used to envelop the metallic element of impregnated in the carbon box. In the present paper, the inhibition efficiency of several pure organic substances was studied by potentiodynamic measurements and linear polarization resistance (LPR) tests. Organic substances containing a carboxylic group and/or an aminic
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Siegmeier, R., M. Kirschey, and M. Voges. "Acrolein Based Polymers as Scale Inhibitors." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98070.

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Abstract Polymers are widely used to prevent scaling in various applications. Whilst acrylic acid and maleic acid are often used for homo and copolymers, acrolein is unique as a monomer for polymeric scale inhibitors. The polymerization can be carried out by using hydrogen peroxide as a polymerization initiator. The properties of the resulting co and terpolymers enable a wide range of applications, e.g. water treatment, detergents, oil production, reverse osmosis, sea water desalination. Laboratory studies were conducted to profile the performance of acrolein based scale inhibitors and to comp
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Amjad, Zahid, and Peter G. Koutsoukos. "Influence of Inhibitor Architecture on Magnesium Ammonium Phosphate (Struvite) Precipitation for Waste Water Application." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-10926.

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Abstract In this work, a variety of polymers were evaluated as precipitation inhibitors for magnesium ammonium phosphate (struvite) in aqueous solution. The polymers tested include 1) homopolymers of acrylic acid and methacrylic acid of varying molecular weight (MW), maleic acid, 2-ethyloxazoline, 2) acrylic acid based co- and terpolymers containing monomers with different functional groups and 3) natural, bio- and hybrid based polymers. The results reveal that polymer performance as a struvite inhibitor is strongly affected by polymer dosage, MW, and ionic charge of the functional group. It h
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Amjad, Z., and R. W. Zuhl. "Effect of Heat Treatment on the Performance of Deposit Control Polymers as Calcium Carbonate Inhibitors." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07056.

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Abstract The impact of heat treating synthetic polymers upon their performance as calcium carbonate inhibitors in an aqueous system has been investigated. The polymers evaluated were: Homopolymers: poly-acrylic acid (P-AA), poly-methacrylic acid (P-MAA), poly-maleic acid (P-MA), and poly(2-acrylamido-2-methylpropane sulfonic acid) or P-SACopolymer: poly(acrylic acid:2-acrylamido-2-methylpropane sulfonic acid) or P-AA:SATerpolymers: poly-AA:SA:sulfonated styrene (SS) or P-AASASS and poly-AA:SA:non ionic (NI) or P-AASANI It has been found that all polymers lose calcium carbonate inhibition perfo
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Reports on the topic "Malic acid"

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สุขสมทิพย์, มณีวรรณ, อำไพ ปั้นทอง, ธิติรัตน์ ปานม่วง та ін. พัฒนาผลิตภัณฑ์จากน้ำมะขาม เพื่อใช้เป็นยาระบาย. จุฬาลงกรณ์มหาวิทยาลัย, 2008. https://doi.org/10.58837/chula.res.2008.29.

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มะขาม Tamarindrus indica L. จำนวน 5 สายพันธุ์ปลูก ได้แก่ มะขามเปรี้ยวยักษ์ มะขามศรีชมภู สืทอง และขันตี จากจังหวัดเพชรบูรณ์ มะขามเปรี้ยว มะขามหวานศรีชมภู และสีทองหนัก จากจังหวัดนครราชสีมา มีองค์ประกอบของสารอินทรีย์ต่างๆ ได้แก่ Tartaric acid malic acid citric acid oxalic aid succinic acid และ fumaric acid ในปริมาณที่แตกต่างกัน พบมีปริมาณกรดอินทรีย์ดังกล่าวเท่ากับ 1.6-17.3% 0.5-2.5% 0.05-0.28% 0.0-0.19% 0.02-0.27% และ 0.0004-0.0044% ตามลำดับ จากการวิเคราะห์โดยเทคนิค HPLC การทดสอบฤทธิ์ยาระบายของน้ำมะขามในหนูขาว โดยวิธี Gastrointestinal motility test ดูการเคลื่อนที่ของผงถ่านในลำไส้เล็กของหนูขาว เที
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Menendez, A., M. Coello, J. Suarez, et al. Processability and mechanical properties of spent coffee ground (SCG) and polypropylene biocomposites. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.bbb.5.

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The circular economy encourages optimizing use of plastics, waste reduction, sustainable materials, and processing of plastic products. In this framework, the use of agricultural waste materials promotes waste reduction and eco-design in plastic product manufacturing. This study researched the preparation of an isotatic polypropylene (PP) matrix (MFI 50 grade) with spent coffee grounds (SCG) and various commercial additives. The biocomposites were analyzed to evaluate their mechanical properties and processability. PP and SCG composites were synthesized with 30% SCG content with maleic anhydri
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ศรีกูลกิจ, กาวี, ประณัฐ โพธิยะราช та ดวงดาว อาจองค์. การเตรียมสารช่วยผสมพอลิแล็กทิกแอซิด-g-มาเลอิกแอนไฮไดรด์ : รายงานวิจัย. จุฬาลงกรณ์มหาวิทยาลัย, 2011. https://doi.org/10.58837/chula.res.2011.68.

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การสังเคราะห์มาเลอิแอนไฮไดร์กราฟท์พอลิแล็กทิกแอซิด (Maleic anhydride grafted Poly(lactic acid), MAH-g-PLA) โดยการทำปฏิกิริยาในเครื่องอัดรีดเกลียวคู่ (Twin screw extruder) ได้ทำการศึกษาผลของปริมาณไดคิวมิลเปอร์ออกไซด์ (Dicumyl peroxide) ซึ่งเป็นสารริเริ่ม (Initiator) และปริมาณของมาเลอิกแอนไฮไดร์ต่อประสิทธิภาพการทำปฏิกิริยาการกราฟท์ จากการสังเคราะห์มาเลอิกแอนไฮไดร์กราฟท์พอลิแล็กทิกแอซิด โดยเทคนิคแบบหลอมเหลว ปฏิกิริยาการกราฟท์สามารถยืนยันได้จาก FTIR และ NMR ผลจาก FTIR พบว่าปรากฏพีค (Peak) ที่ตำแหน่ง 1,759 cm⁻¹ และ 3,300 -3,600 cm⁻¹ ซึ่งเป็นพีคของหมู่คาร์บอนิลในหมู่เอสเทอร์และพีคการสั่นแบบ stretchi
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Alramadan, Ghada. The Effect of Styrene-Maleic Acid (SMA) Copolymers on Solubilizing Lipid Bilayers and Forming Nanodiscs. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.6719.

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Sullivan, T. J., J. M. Eilers, B. J. Cosby, C. T. Driscoll, H. F. Hemond, and D. F. Charles. The influence of naturally-occurring organic acids on model estimates of lakewater acidification using the model of acidification of groundwater in catchments (MAGIC). Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/6776570.

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Sullivan, T. J., J. M. Eilers, B. J. Cosby, et al. The influence of naturally-occurring organic acids on model estimates of lakewater acidification using the model of acidification of groundwater in catchments (MAGIC). Summary of research conducted during year 1. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10147975.

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Altstein, Miriam, and Ronald Nachman. Rationally designed insect neuropeptide agonists and antagonists: application for the characterization of the pyrokinin/Pban mechanisms of action in insects. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7587235.bard.

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The general objective of this BARD project focused on rationally designed insect neuropeptide (NP) agonists and antagonists, their application for the characterization of the mechanisms of action of the pyrokinin/PBAN (PK-PBAN) family and the development of biostable, bioavailable versions that can provide the basis for development of novel, environmentally-friendly pest insect control agents. The specific objectives of the study, as originally proposed, were to: (i) Test stimulatory potencies of rationally designed backbone cyclic (BBC) peptides on pheromonotropic, melanotropic, myotropic and
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