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Journal articles on the topic 'Solutions of phloroglucinol'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

H., C. MALHOTRA, and AMINIFAR AMIR. "A Kinetic Study of Acid-catalysed Phloroglucinol Acetophenone Reaction." Journal of Indian Chemical Society Vol. 68, May 1991 (1991): 267–71. https://doi.org/10.5281/zenodo.5992306.

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Department of Chemistry, University of Delhi, Delhi-110 007 <em>Manuscript received 4 December 1990, accepted 31 May 1991</em> Kinetics of the reaction between phloroglucinol and acetophenone was investigated at different temperatures (30-45°) in methanol and different hydrochloric acid concentration (0.024-0.710 <em>M</em>) were used. The reaction was promoted using thioglycollic acid (TGA) and the functionality of phloroglucinol was also taken into account. Reaction was found to obey second order kinetics. Activation parameters were calculated. The reaction was also carried out In s

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2

Baudraz de Paula, Jean Carlo, Douglas Junior Bertoncelli, Guilherme Augusto Cito Alves, Gabriel Barraca Men, Tatiana Fattori Mathias, and Ricardo Tadeu De Faria. "Soluções crioprotetoras na conservação de sementes de orquídea estrela e orquídea bambu em nitrogênio líquido." Ornamental Horticulture 24, no. 4 (2018): 341–46. http://dx.doi.org/10.14295/oh.v24i4.1180.

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An alternative for the conservation of orchid species threatened with extinction is the seeds preservation for long periods by cryopreservation. This work aimed to evaluate the influence of cryogenic solutions on the orchids Epidendrum radicans and Arundina bambusifolia seeds cryopreservation in liquid nitrogen. Seven treatments were performed: 0.4 M sucrose; 2 M glycerol; PVS1; PVS2; PVS3; PVS2 + 1% phloroglucinol and the control. After liquid nitrogen removal, half of the seeds were subjected to tetrazolium test, and another half was in vitro cultured. After 30 days seed germination was eval

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3

Vendrame, Wagner, Roberto Takane, Lamartine Cardoso, Leonardo Alvarez, and Ricardo Tadeu. "Cryopreservation of seeds of Melocactus zehntneri Braun ex Ritter f. and Cereus gounellei Luetzelb ex Schum k. by the vitrification method." Agronomy Science and Biotechnology 6 (May 28, 2020): 1–7. http://dx.doi.org/10.33158/asb.r106.v6.2020.

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The Brazilian Caatinga houses a number of cacti species, which are considered endangered due to human influence. Two of them, Melocactus zehntneri Braun ex Ritter f. and Cereus gounellei Luetzelb ex Schum k., are endemic of the Brazilian Caatinga. Cryopreservation can provide a means for long-term preservation of endangered plant material. The aim of this study was to evaluate the efficiency of cryoprotectants for the cryopreservation of seeds from these two species. The treatments consisted of immersing seeds in different cryoprotectant solutions and vitrification solutions before storage in

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4

Sotelo, Jose L., Fernando J. Beltran, Manuel Gonzalez, and Juan F. Garcia-Araya. "Ozonation of aqueous solutions of resorcinol and phloroglucinol. 2. Kinetic study." Industrial & Engineering Chemistry Research 30, no. 1 (1991): 222–27. http://dx.doi.org/10.1021/ie00049a034.

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5

Campos, Thiago Souza, Vania M. Pereira, Soumaya El Merzougui, et al. "Cryopreservation of Lavender Trumpet Tree (Handroanthus impetiginosus) Seeds." Horticulturae 10, no. 12 (2024): 1256. http://dx.doi.org/10.3390/horticulturae10121256.

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In response to the near-threatened status of Handroanthus impetiginosus, primarily due to habitat loss and illegal logging, this study examines how X-ray imaging and cryopreservation impact the seed quality and viability essential for conservation. Seeds initially had a moisture content of 12.3%, reduced to 6.5% through desiccation. X-ray imaging allowed for detailed visualization of internal structures, identifying seeds as normal, abnormal, or dead based on damage and development. Normal seeds consistently germinated and produced healthy seedlings, while those with internal damage or excessi

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6

Beltran, Fernando J., and Manuel Gonzalez. "Ozonation of aqueous solutions of resorcinol and phloroglucinol. 3. Instantaneous kinetic regime." Industrial & Engineering Chemistry Research 30, no. 12 (1991): 2518–22. http://dx.doi.org/10.1021/ie00060a003.

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7

Krylova, Anastasia G., Iraida V. Voronyuk, and Tatiana V. Eliseeva. "Equilibrium characteristics of sorption of some phenolic compounds by FIBAN A-1 fiber from aqueous solutions." Сорбционные и хроматографические процессы 23, no. 6 (2024): 1134–40. http://dx.doi.org/10.17308/sorpchrom.2023.23/11873.

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Many phenolic compounds are related to the group of toxic substances, the occurrence of which in wastewater has a negative impact on the environment. In addition to extraction, biochemical, and membrane methods for the isolation of hydroxybenzenes from aqueous media, sorption methods using active carbon, nonionic polymers, and ion-exchange materials are also actively used. The purpose of this work was to establish the features of the sorption of phenol, resorcinol and phloroglucinol from aqueous solutions with FIBAN fibers. Sorption was studied under static conditions at a temperature of 298 K

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8

Sotelo, Jose L., Fernando J. Beltran, and Manuel Gonzalez. "Ozonation of aqueous solutions of resorcinol and phloroglucinol. 1. Stoichiometry and absorption kinetic regime." Industrial & Engineering Chemistry Research 29, no. 12 (1990): 2358–67. http://dx.doi.org/10.1021/ie00108a009.

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9

Ryabov, Mikhail A., Thi Ngok Anh Vu, Olga V. Kovalchukova, and Dmitry S. Gusarov. "Quantum-chemical modeling of structure and properties of nitrogen derivatives of phloroglucinol." Butlerov Communications 57, no. 3 (2019): 51–57. http://dx.doi.org/10.37952/roi-jbc-01/19-57-3-51.

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The DFT/B3LYP quantum-chemical method has been used to simulate the structure of 2-((2-hydroxyphenyl) diazonyl) benzene-1,3,5-triol (L1) and 2-((2-hydroxy-4-nitrophenyl) diazonyl) benzene-1,3,5-triol (L2) molecules. The spatial and electronic structure of molecules in various tautomeric forms was determined. It was shown that the stability of these compounds is primarily due to the presence of strong intramolecular hydrogen bonds (IHB), which form six-membered cycles, and the isomerism of the molecule, which assume the formation of IHB. The structures where IHB form five-membered cycles, are l

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10

Stegani, Vanessa, Guilherme Augusto Cito Alves, Douglas Junior Bertoncelli, and Ricardo Tadeu de Faria. "Criopreservação de sementes de rainha do abismo (Sinningia leucotricha)." Ornamental Horticulture 23, no. 1 (2017): 15. http://dx.doi.org/10.14295/oh.v23i1.921.

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The objective was to evaluate the use of cryogenic solutions in cryopreservation Sinningia leucotricha seeds by the vitrification method in liquid nitrogen. The treatments were: T1 - control: without cryoprotective solution; T2 - PVS1; T3 - modified PVS1; T4 - PVS2; T5 - modified PVS2; T6 - PVS3; T7 - PVS3 modified; T8 - PVS2 + 1% phloroglucinol. After 15 days of immersion of seeds in LN, the cryotubes were removed and rapidly reheated to a temperature of 40 °C water bath for 1.5 minutes. Then, the seeds were washed with wash solution for 20 min. Later they were submitted to the germination te

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11

Kellil, Abdessamie, Spyros Grigorakis, Sofia Loupassaki, and Dimitris P. Makris. "Empirical Kinetic Modelling and Mechanisms of Quercetin Thermal Degradation in Aqueous Model Systems: Effect of pH and Addition of Antioxidants." Applied Sciences 11, no. 6 (2021): 2579. http://dx.doi.org/10.3390/app11062579.

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Quercetin (Qt) is a natural flavonoid of high biological significance, and it occurs in a wide variety of plant foods. Although its oxidation by various means has been extensively studied, its behavior with regard to thermal treatments remains a challenge. The study described herein aimed at investigating Qt thermal decomposition, by proposing an empirical sigmoidal model for tracing degradation kinetics. This model was employed to examine the effect of addition of antioxidants on Qt thermal degradation, including ascorbic acid, L-cysteine, and sulfite. Furthermore, degradation pathways were p

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12

Hassan, Ahmed I. "Utility of N-Bromosuccinimide as a Green Chemical Reagent for Determination of H2-Receptor Antagonists in their Pharmaceutical Dosage Forms." Acta Chemica Iasi 27, no. 1 (2019): 47–64. http://dx.doi.org/10.2478/achi-2019-0004.

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Abstract An environmentally safe, simple and robust spectrophotometric method has been developed for determination of H2-receptor antagonists namely: cimetidine (CIM), famotidine (FAM), nizatidine (NIZ), and ranitidine hydrochloride (RAN). The method was depend on the reaction of the studied drugs with N-bromosuccinimide (NBS), environmentally friendly reagent, and the excess NBS was measured by its reaction with phloroglucinol to give a yellow chromogenic product (λmax at 435 nm). The absorption intensity decrease (ΔA) was correlated with drug concentrations in the sample solutions. By using

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13

Tamta, Sushma, L. M. Palni, and S. Nandi. "Adventitious root formation in shoot cuttings of Himalayan cedar (Cedrus deodara Roxb. ex Lamb.) G. Don under mist chamber conditions." Journal of Non-Timber Forest Products 14, no. 3 (2007): 231–38. http://dx.doi.org/10.54207/bsmps2000-2007-v30s87.

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Cedrus deodara is an important tree species of the Himalayan region and its clonal propagation assumes particular importance for rapid multiplication of desirable biotypes (elite). Cuttings taken from young shoots (current season’s growth) were variously treated with solutions of root inducing chemicals for 24 h, planted individually in polybags which were then placed inside a mist chamber. The experiments were conducted in four different seasons, i.e., winter, summer, monsoon and autumn. The most effective treatment was noticed for commonly used fungicide, bavistin (0.05%), that induced good

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14

PAULA, JEAN CARLO BAUDRAZ DE, HUGO ROLDI GUARIZ, WALTER APARECIDO RIBEIRO JÚNIOR, GABRIEL DANILO SHIMIZU, RICARDO TADEU DE FARIA, and HALLEY CAIXETA DE OLIVEIRA. "CRYOPRESERVATION OF SEEDS OF THE BRAZILIAN NATIVE SPECIES AROEIRA-DO-SERTÃO (Astronium urundeuva M. Allemão Engl.)1." Revista Caatinga 35, no. 4 (2022): 915–24. http://dx.doi.org/10.1590/1983-21252022v35n419rc.

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ABSTRACT Aroeira-do-sertão is a Brazilian native species that has been widely explored. Thus, the population of this species has been reduced and techniques for its preservation are essential, such as the conservation of seeds in liquid nitrogen (LN). The objective of this work was to evaluate different cryoprotectant solutions for cryopreservation of aroeira-do-sertão seeds in LN (-196 °C). The treatments used were: control (7.5±1.5 °C); LN without cryoprotectant; sucrose 0.4 mol L-1; sucrose 0.8 mol L-1; glycerol 1 mol L-1; glycerol 2 mol L-1; PVS1 (plant vitrification solution); PVS2; PVS2

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15

Silva, Helder Rodrigues da, Francino Costa Palhares da Silva, Cassio Egidio Cavenaghi Prete, et al. "Cryopreservation of Chlorella vulgaris Using Different Cryoprotectant Agents." Journal of Agricultural Science 12, no. 7 (2020): 75. http://dx.doi.org/10.5539/jas.v12n7p75.

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The objective of this study is to evaluate the cryopreservation of Chlorella vulgaris using different substances. The C. vulgaris was cultured in medium MH, the microalgae were grown under a 12:12 h light: dark photoperiod, illumination with 40 W led lamps, and a controlled temperature of 28&plusmn;1 &ordm;C. C.vulgaris was cultured for 15 days and the culture was aliquoted into 3-mL cryogenic tubes. The 3-mL aliquot was centrifuged, the supernatant was discarded, and the pellet was resuspended in different cryoprotectant solutions, T1-PVS1, T2-PVS2, T3-PVS2 (1% phloroglucinol), T4 (2

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16

Lykholat, Y. V., N. O. Khromykh, O. O. Didur, O. O. Gaponov, M. M. Nazarenko, and T. Y. Lykholat. "Altering maize (Zea mays) seedlings’ growth and lignification processes by action of novel synthesized compounds." Regulatory Mechanisms in Biosystems 12, no. 2 (2021): 260–64. http://dx.doi.org/10.15421/022135.

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Effective management of the course of crop vegetation and adaptation to biotic and abiotic stresses is a prerequisite for stable grain production and requires replenishment of the arsenal of plant growth regulators. The effect of novel synthesized cage amides on maize seedlings morphogenesis has been tested. Seeds of a mid-early maize hybrid 'DN Galatea' after the pre-sowing treatment with 0.01% solutions of test compounds were grown in distilled water. The roots and shoots sections of 10-day-old maize seedlings were stained with phloroglucinol solution to reveal the lignin-containing anatomic

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17

Yang, H., K. Nagai, M. Nakai, and T. Norimatsu. "Thin shell aerogel fabrication for FIREX-I targets using high viscosity (phloroglucinol carboxylic acid)/formaldehyde solution." Laser and Particle Beams 26, no. 3 (2008): 449–53. http://dx.doi.org/10.1017/s0263034608000451.

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AbstractCapsules with a thin aerogel shell were prepared by the OO/W/OIemulsion process. (Phloroglucinol carboxylic acid)/formaldehyde (PF) was used as the water phase (W) solution to form the shell of the capsule. PF is a linear polymer prepared from phloroglucinol carboxylic acid. The viscosity of the PF solution can reach a high level of 9×10−5m2/s without gelation while resorcinol/formaldehyde (RF) gelates at ~3–4×10−5m2/s. Using the viscous PF solution, capsule with a 17 µm gel shell was fabricated. This thickness satisfies the specification of the first phase of Fast Ignition Realization

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18

Milonjić, S. K., L. K. Zhigunova, and V. Lj Pavasović. "Adsorption of some Weak Organic Electrolytes from Aqueous Solutions on Silica." Materials Science Forum 555 (September 2007): 195–200. http://dx.doi.org/10.4028/www.scientific.net/msf.555.195.

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The adsorption of organic electrolytes from aqueous solutions on various adsorbents has been frequently investigated because of its importance in water purification. Phenol and substituted phenols are very common contaminants of water. In this paper, the adsorption results of some weak organic electrolytes (hydrochinon, phloroglucin and acidum gallicum) from aqueous solutions on silica are presented. The adsorption of the organics was investigated by the batch method. Effects of solution pHs (in the 2-10 range) and concentrations of these compounds on the adsorption were investigated. In the c

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19

Lohrie, Martin, and Wilhelm Knoche. "Dissociation and keto-enol tautomerism of phloroglucinol and its anions in aqueous solution." Journal of the American Chemical Society 115, no. 3 (1993): 919–24. http://dx.doi.org/10.1021/ja00056a016.

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20

Mammino, Liliana, and Mwadham M. Kabanda. "A computational study of the carboxylic acid of phloroglucinol in vacuo and in water solution." International Journal of Quantum Chemistry 110, no. 3 (2010): 595–623. http://dx.doi.org/10.1002/qua.22262.

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21

Hildenbrand, K., D. Wang, I. György, M. N. Schuchmann, and C. Von Sonntag. "ESR and pulse radiolysis studies on the free-radical-induced oxidation of phloroglucinol in aqueous solution." Radiation Physics and Chemistry 45, no. 6 (1995): 973–74. http://dx.doi.org/10.1016/0969-806x(95)93960-e.

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22

Hamper, Bruce C., Bradley Gallow, Gregory Giovine, and Trevor Smith. "Continuous-Flow Photochemical Isomerization of Humulones to Isohumulones." Molecules 30, no. 5 (2025): 1002. https://doi.org/10.3390/molecules30051002.

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Humulones are a family of homolog natural products obtained from the strobiles of humulus lupulus, or hops plants. Structurally, they consist of substituted phloroglucinols with two isoprenyl side chains, a carbonyl group and a quaternary ring carbon substituted with a hydroxyl group. The three most prominent homologs are n-, co- and ad-humulone, containing isobutyl, isopropyl and secbutyl ketone groups, respectively. When solutions of humulones are exposed to UV light, they undergo stereoselective isomerization to the five-membered ring trans-isohumulones. A photoreactor was assembled from st

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23

Liu, Mouwu, Yanfei Wang, Zhili Ma, and Yige Luo. "Poly(cyclotriphosphazene-co-phloroglucinol)PCPP as a solid phase extractant for preconcentrative separation of uranium(VI) from aqueous solution." Journal of Radioanalytical and Nuclear Chemistry 319, no. 1 (2018): 279–88. http://dx.doi.org/10.1007/s10967-018-6352-9.

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24

Fu, Jianwei, Zhonghui Chen, Xuechen Wu, et al. "Hollow poly(cyclotriphosphazene-co-phloroglucinol) microspheres: An effective and selective adsorbent for the removal of cationic dyes from aqueous solution." Chemical Engineering Journal 281 (December 2015): 42–52. http://dx.doi.org/10.1016/j.cej.2015.06.088.

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25

Kim, Young A., and Jong Suk Lee. "Anatomy of Neck Tissue of Cut Roses as Affected by Bent-neck and Preservative Solution." HortScience 32, no. 3 (1997): 459D—459. http://dx.doi.org/10.21273/hortsci.32.3.459d.

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To investigate the differences of anatomical structure of neck tissue between bent-neck and strong-neck flowers, scanning electron microscopy of neck tissue during senescence of cut rose flowers held in deionized water or preservative solution (3% sucrose + 200 ppm HQS + 0.1 mM ethionine) was observed. Lignins in xylem, phloem, and interfascicular cambium of neck were stained to red by phloroglucine. More lignin was formed in the phloem of neck in rose flowers held in preservative solution than deionized water. Neck strength of cut rose could be increased by increase of lignin content, and thi

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26

Oguz, Umut, and Engin U. Akkaya. "One-pot synthesis of a red-fluorescent chemosensor from an azacrown, phloroglucinol and squaric acid: A simple in-solution construction of a functional molecular device." Tetrahedron Letters 38, no. 25 (1997): 4509–12. http://dx.doi.org/10.1016/s0040-4039(97)00916-7.

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27

"Final Report on the Safety Assessment of Phloroglucinol." Journal of the American College of Toxicology 14, no. 6 (1995): 468–75. http://dx.doi.org/10.3109/10915819509010306.

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The aromatic alcohol Phloroglucinol is used in several hair dyes and colors as an antioxidant and hair colorant. Current data on use concentrations was not available. In rats, Phloroglucinol has an LD50 of 5.2 g/kg. Subcutaneous injections of unrefined 0.05 M and 0.01 M solutions of Phloroglucinol caused positive dermal reactions in guinea pigs at both activation and challenge. At a concentration of 3.0 mg/ml, Phloroglucinol induced Trp+ revertants in Saccharomyces and induced chromosome breaks in CHO cells, with and without metabolic activation. These data are not sufficient to demonstrate th

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28

Petrova, Yuliya Yu, Elena V. Bulatova, Dmitry O. Zelentsov, and Yuliya G. Mateyshina. "Hydrophilic molecularly imprinted phenol-amine-formaldehyde resins." Chimica Techno Acta 10, no. 3 (2023). http://dx.doi.org/10.15826/chimtech.2023.10.3.10.

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Hydrophilic molecularly imprinted resins (MIR), which are produced using hydrophilic monomers such as phenols, aldehydes, melamine or urea, have recently attracted increasing attention for use in separation and preconcentration. Among their obvious advantages are good sorption capacity, high recovery and selectivity, as well as their reusability in aqueous solutions. In this work we applied the bulk molecular imprinting method to produce quercetin-imprinted phenol-amino-formaldehyde resin. For this purpose, phloroglucinol and melamine solutions were mixed with formaldehyde and then polyethylen

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29

Dilshener, Denise, Drew F. Parsons, and Johannes Fiedler. "pH-sensitive spontaneous decay of functionalized carbon dots in solutions." Journal of Chemical Physics 160, no. 21 (2024). http://dx.doi.org/10.1063/5.0201261.

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Carbon quantum dots have become attractive in various applications, such as drug delivery, biological sensing, photocatalysis, and solar cells. Among these, pH sensing via luminescence lifetime measurements of surface-functionalized carbon dots is one application currently investigated for their long lifetime and autonomous operation. In this article, we explore the theoretical connection between excitation lifetimes and the pH value of the surrounding liquid via the protonation and deprotonation of functional groups. Example calculations applied to m-phenylenediamine, phloroglucinol, and teth

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30

Mokhnache, Kamel, Fayza Bouchakour, Hadia Kellil, et al. "Preparation of new Flubendazole Microparticules using Sodium alginate, Caroboxymethyl strach and Ascorbic acid for the Colonic delivery." Research Journal of Pharmacy and Technology, November 30, 2023, 5264–70. http://dx.doi.org/10.52711/0974-360x.2023.00853.

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Diseases related to intestinal parasites require repeated administration of antihelminthic drugs throughout one's lifetime, using various routes, including oral administration. This mode of administration can pose a problem with treatment adherence for the patient. In order to overcome these difficulties, we have considered the development of new matrices: modified starch, which could facilitate the development of an oral therapeutic system (microparticules) with controlled colonic release. As the active ingredient, we used flubendazole (100 mg) in different prepared excipients: modified starc

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31

"Phloroglucinol solution." Cold Spring Harbor Protocols 2010, no. 1 (2010): pdb.rec11304. http://dx.doi.org/10.1101/pdb.rec11304.

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32

Kavitha, K., S. Kaviyarasan, N. Indra, et al. "Induction of fungal disease resistance in rice mediated by bacterial endophytes." Plant Science Today 12, Sp2 (2025). https://doi.org/10.14719/pst.4681.

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Rice crops are being affected by destructive pathogens that cause disease. The climatic variations make the plants more vulnerable to different biotic stresses. Severe limitations are experienced in rice-growing regions due to fungal diseases such as blast and sheath blight. Synthetic chemicals are used extensively to treat plant diseases, which are more harmful to animals, plants and humans. Endophytes are adaptable, beneficial microorganisms that offer environmentally friendly solutions for disease control by symbiotic or mutual associations and live within and between plant cells, helping t

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33

Baudraz de Paula, Jean Carlo, Walter Aparecido Ribeiro Júnior, Gabriel Danilo Shimizu, Gabriel Barraca Men, and Ricardo Tadeu De Faria. "Cryopreservation in liquid nitrogen of Brazilian orchid seeds Miltonia flavescens Lindl." REVISTA AGRO@MBIENTE ON-LINE 14 (November 27, 2020). http://dx.doi.org/10.18227/1982-8470ragro.v14i0.6388.

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Miltonia flavescens is a species vulnerable to extinction, which justifies research on preservation methods. Cryopreservation in liquid nitrogen (LN) consists of maintaining biological material at a low-temperature (-196 °C). Thus, the aim of the experiment is to evaluate the influence of different cryoprotective solutions on cryopreservation in LN of the Brazilian orchid Miltonia flavescens seeds. The experiment was conducted in a completely randomized design (CRD), with eight treatments and six replications. The treatments were composed as follows: control; immersion in LN, no cryoprotectant

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Chaudhary, Priya, Mukesh Meena, and Pracheta Janmeda. "Microscopic characterization, TLC fingerprinting and optimization of total lipid content from Euphorbia neriifolia (L.) using response surface methodology." Microscopy Research and Technique, November 16, 2023. http://dx.doi.org/10.1002/jemt.24456.

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AbstractEuphorbia neriifolia (EN) is a medicinal plant used to treat a variety of ailments in traditional systems. Despite numerous studies on pharmacological activities, no information was available on the microscopic study of this plant. This is the first study that has been attempted to fill this need by performing the light and field emission scanning electron microscopy (FESEM) of leaf, stem, and latex. The powder microscopy of several organs (leaves, stem, and bark) and exudate (latex) of EN was carried out using safranine, fast green, phloroglucinol, and other standard solutions at diff

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