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Journal articles on the topic 'Hydrolytic dissolution'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Pichugina, A., and V. Lutsik. "Investigation of the mechanism of hydrolytic dissolution of nickel sulfide in dilute sulfuric acid." Bulletin of Science and Practice, no. 12 (December 11, 2017): 84–89. https://doi.org/10.5281/zenodo.1101165.

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The paper presents the results a study of the hydrolytic mechanism of dissolution of Nickel sulfide in dilute solutions of sulfuric acid. According to the obtained mathematical model of sulfide dissolution are established modes of interaction, determined by the details of the mechanism of the studied processes. Proposed relevant observable kinetic dependences reasonable schemes of interaction. Received rentgenospektralny spectra and STM images of the surface of Nickel sulfide. A mechanism is hydrolytic. The process is not accompanied by oxidation of sulfide sulfur. The limiting stage of hydrol

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2

Sari, Rita Kartika, Fadilah Fitrianum, Muhammad Iqbal Maulana, et al. "Hydrolytic Stability of Sengon-Oriented Strand Board Bonded with Hybrid Phenol-Formaldehyde/Polymeric Methylene Diphenyl Diisocyanate Adhesives." Jurnal Sylva Lestari 12, no. 3 (2024): 818–31. http://dx.doi.org/10.23960/jsl.v12i3.987.

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The hydrolytic stability of oriented strand board (OSB) is critical to guarantee good performance in humid conditions over the long term. The adhesive system impacts hydrolytic stability in addition to the wood strands. This study aims to investigate the hydrolytic stability of OSB bonded with a hybrid adhesive based on phenol-formaldehyde (PF) and polymeric methylene diphenyl diisocyanate (pMDI) modified with NaOH and CaCO3 catalyst. PF was mixed with each catalyst at approximately 1% of the PF solids content. The pMDI was added to the mixture at 2.5% and 5% of the PF solid content. The hybri

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Pichugina, A., S. Gortsevich, and V. Lutsik. "Kinetics of millerite and heazlewoodite dissolution in solutions of nitric acid." Bulletin of Science and Practice 456, no. 11 (12) (2016): 106–11. https://doi.org/10.5281/zenodo.166791.

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The paper presents the results of a study of the kinetics of hydrolytic and oxidative dissolution of Nickel sulfides in nitric acid. Dependences of specific speed of dissolution of copper cations (W, mol/sm2s) from concentration of hydrogen peroxide (Cn, mol/dm3), рН, temperatures (T, K), frequencies of rotation disk (ω, c−1) and durations of interaction (τ, c) are studied. The mechanisms of the interaction of millerite and heazlewoodite. The values of apparent activation energy and sulfides dissolution rate constant are calculated. Interaction modes are established, probable limiting stages o

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Krauklis, Gagani, and Echtermeyer. "Long-Term Hydrolytic Degradation of the Sizing-Rich Composite Interphase." Coatings 9, no. 4 (2019): 263. http://dx.doi.org/10.3390/coatings9040263.

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Glass fiber-reinforced composites are exposed to hydrolytic degradation in subsea and offshore applications. Fiber-matrix interphase degradation was observed after the matrix was fully saturated with water and typical water absorption tests according to ASTM D5229 were stopped. Due to water-induced dissolution, fiber-matrix interphase flaws were formed, which then lead to increased water uptake. Cutting sample plates from a larger laminate, where the fibers were running parallel to the 1.5 mm long short edge, allowed the hydrolytic degradation process to be studied. The analysis is based on a

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Pichugina, A., and S. Gortsevich. "Fluorimetric determination of nickel and copper in the study of hydrolytic and oxidative dissolution." Bulletin of Science and Practice 4, no. 12 (2018): 85–88. https://doi.org/10.5281/zenodo.2254222.

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The paper presents the results of the study of the kinetics of oxidative dissolution of Nickel and copper. We have investigated the dependence of the metal passed into solution from the flow time of the dissolution process. The most efficient method for the determination of metals to study the kinetics. The main parameters of the fluorescent analysis method were selected, and the optical densities of the samples were determined.

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Väisänen, Saija, Harri Kosonen, Matti Ristolainen, and Tapani Vuorinen. "Cellulose dissolution in aqueous NaOH–ZnO: effect of pulp pretreatment at macro and molecular levels." Cellulose 28, no. 7 (2021): 4385–96. http://dx.doi.org/10.1007/s10570-021-03779-w.

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AbstractThis paper discusses the effect of hydrolytic pretreatments on pulp dissolution in the aqueous NaOH–ZnO solvent system. Eight samples were studied. They consisted of a never-dried softwood kraft pulp that was hydrolyzed under seven different conditions as well as the pulp without hydrolysis as a reference. The dissolution of the pulps was evaluated both at the macro level as well as at the molecular level based on their reactivity with 4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxo-piperidium (4-AcNH-TEMPO+). The fiber properties (i.e. the extent of fibrillation, amount of fines and f

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7

YUKHIN, YU M., E. S. KOLEDOVA, A. S. DAMINOV, E. V. TIMAKOVA, V. A. KUZNETSOV, and O. D. SHEINA. "OBTAINING BISMUTH AND ITS HIGH-PURITY COMPOUNDS." Chemistry for Sustainable Development 32, no. 5 (2024): 687–96. https://doi.org/10.15372/csd2024604.

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The process of metal bismuth dissolution in nitric acid was studied, and a comparison was made over environmentally friendly methods of obtaining bismuth nitrate solutions by the preliminary oxidation of bismuth, as well as by its dissolution in the presence of urea or ammonium nitrate. It has been shown that the dissolution of bismuth in the presence of ammonium nitrate at a molar ratio of ammonium nitrate to bismuth equal to 1.5-3.5 and a temperature of 70±5 °C allows eliminating the release of nitrogen oxides into the gas phase and obtaining a solution with a high concentration of bismuth.

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8

Ramirez, S., D. Righi, and S. Petit. "Alteration of smectites induced by hydrolytic exchange." Clay Minerals 40, no. 1 (2005): 15–24. http://dx.doi.org/10.1180/0009855054010152.

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AbstractHydrolytic exchange was performed experimentally on four smectitic clays to evaluate the extent of clay alteration induced by this process and the associated ‘auto-transformation’ of H+ clays. Clay samples were Na-saturated and submitted to 10, 50 and 100 wetting-drying (WD) cycles and characterized after treatment using X-ray diffraction (XRD), infrared spectroscopy (FTIR) and cation exchange capacity analysis. Evidence for hydrolytic exchange was given by increasing amounts of exchangeable Mg2+ and precipitation of Na soluble salts for samples subjected to 100 WD cycles. Results indi

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9

Chen, Jiahao, Shihu Liu, Yingmu Wang, Wei Huang, and Jian Zhou. "Effect of different hydrolytic enzymes pretreatment for improving the hydrolysis and biodegradability of waste activated sludge." Water Science and Technology 2017, no. 2 (2018): 592–602. http://dx.doi.org/10.2166/wst.2018.185.

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Abstract In this study, the effects of lysozyme, protease and α-amylase pretreatments for improving the hydrolysis and biodegradability of waste activated sludge (WAS) were investigated. The results showed that lysozyme was more effective in increasing the soluble chemical oxygen demand (SCOD) concentration in the liquid phase of sludge and improving the release of protein and carbohydrate from sludge flocculation to enhance sludge hydrolysis. After 8 h hydrolysis, the net SCOD increase in a reactor with lysozyme was 2.23 times and 2.15 times that of the reactors with protease and α-amylase, r

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10

Smith, David C., Meinhard Simon, Alice L. Alldredge, and Farooq Azam. "Intense hydrolytic enzyme activity on marine aggregates and implications for rapid particle dissolution." Nature 359, no. 6391 (1992): 139–42. http://dx.doi.org/10.1038/359139a0.

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11

Gu, Bian, Wei, and Wang. "Enhancement of Hydrotropic Fractionation of Poplar Wood using Autohydrolysis and Disk Refining Pretreatment: Morphology and Overall Chemical Characterization." Polymers 11, no. 4 (2019): 685. http://dx.doi.org/10.3390/polym11040685.

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Solid acids have been proposed as a hydrolytic agent for wood biomass dissolution. In this work, we presented an environmentally friendly physicochemical treatment to leave behind cellulose, dissolve hemicellulose, and remove lignin from poplar wood. Several pretreatments, such as autohydrolysis and disk refining, were compared to optimize and modify the process. The p-toluenesulfonic acid could extract lignin from wood with a small amount of cellulose degradation. Disk refining with subsequent acid hydrolysis (so-called physicochemical treatment) doubled the delignification efficiency. A comp

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Smith, D. C. "Dental Cements." Advances in Dental Research 2, no. 1 (1988): 134–41. http://dx.doi.org/10.1177/08959374880020010501.

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The manifold uses of dental cements-as (a) luting agents, (b) cavity linings and bases, and (c) restorations for teeth—make them perhaps the most important materials in clinical dentistry. The research of the last 10 years has resulted in four main types, classified by matrix-forming species: (1) phosphate, (2) phenolate, (3) polycarboxylate, and (4) polymethacrylate. The zinc phosphate cements continue to be widely used for luting in an essentially unchanged form. Acidity and oral dissolution remain as problems. The zinc-oxide eugenol cements and their modifications are useful as linings and

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13

Klarić, David, Željka Soldin, Anna Vincze, et al. "Biopharmaceutical Characterization and Stability of Nabumetone–Cyclodextrins Complexes Prepared by Grinding." Pharmaceutics 16, no. 12 (2024): 1493. http://dx.doi.org/10.3390/pharmaceutics16121493.

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Background: Nabumetone (NAB) is a poorly soluble nonsteroidal anti-inflammatory prodrug (BCS class II drug) whose solubility is significantly improved by complexation with cyclodextrins (CDs). Methods: The solid complexes, in a 1:1 molar ratio, were prepared by mechanochemical activation by grinding, using β-cyclodextrin (β-CD) and its derivatives, hydroxypropyl- and sulfobutylether-β-cyclodextrin (HP-β-CD and SBE-β-CD). The complexation was confirmed by differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), and attenuated total reflectance Fourier-transformed infrared spect

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14

Blatnik, Sandra Urek, Rok Dreu, and Stanko Srčič. "Influence of pH modifiers on the dissolution and stability of hydrochlorothiazide in the bi- and three-layer tablets." Acta Pharmaceutica 65, no. 4 (2015): 383–97. http://dx.doi.org/10.1515/acph-2015-0031.

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Abstract During the past few years, the studies of bi- and multi-layered tablets increased due to the consumption of several different drugs per day by a patient and requests for appropriate patient compliance. The demographic shift toward older population increases the use of combination therapy as polypharmacy. Hydrochlorothiazide (HCTZ), as a model drug, is most commonly used in the treatment of hypertension, congestive heart failure and as a diuretic. The aim of the present study is to investigate the effect of the local environment on dissolution and stability behaviour of HCTZ in fixed m

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15

Altunina, L. K., and V. A. Kuvshinov. "EOR Technologies: Physico-Chemical Aspects." Eurasian Chemico-Technological Journal 3, no. 3 (2017): 179. http://dx.doi.org/10.18321/ectj563.

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<p>The application of self-regulating oil-displacing systems is considered to be a promising trend in the development of physico-chemical EOR methods. Technologies intended to increase conformance predominate. EOR technologies, where heat energy of the formation is used to generate alkaline buffer systems, CO<sub>2</sub> and gels increasing oil displacement and conformance, have wide potentialities. Such methods have been realized in the technologies developed at the Institute of Petroleum Chemistry SB RAS (IPC). Hydrolysis, hydrolytic polycondensation and coagulation in the

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16

Tam, Kin Yip, Richard G. Compton, John H. Atherton, Colin M. Brennan, and Robert Docherty. "Mechanism of Solid/Liquid Interfacial Reactions. The Hydrolytic Dissolution of Solid Triphenylmethyl Chloride in Aqueous Solution." Journal of the American Chemical Society 118, no. 18 (1996): 4419–26. http://dx.doi.org/10.1021/ja9529145.

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17

Gil-Castell, O., J. D. Badia, E. Strömberg, S. Karlsson, and A. Ribes-Greus. "Effect of the dissolution time into an acid hydrolytic solvent to tailor electrospun nanofibrous polycaprolactone scaffolds." European Polymer Journal 87 (February 2017): 174–87. http://dx.doi.org/10.1016/j.eurpolymj.2016.12.005.

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18

M.P.Azizova, M.M.Agahuseynova, M. P. Azizova, M. M. Agahuseynova. "PREPARATION OF ORGANIC-INORGANIC COMPOSITE MATERIALS USING SOL-GEL TECHNOLOGY." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 148, no. 02-02 (2024): 369–74. https://doi.org/10.36962/pahtei14802-022024-369.

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This article reviews the principles of hydrolytic polycondensation of tetramethoxysilane (TMOS) in alkaline media. Depending on the concentration of tetramethoxysilane, both nanoscale mono-disperse SiO2 particles and monolithic samples of xerogels were synthesized. Pyridine derivatives, representatives of several chemically and thermally stable aromatics, which perform the function of catalysts, were selected for the work. During the sol-gel process of hydrolysis of tetramethox-ysilane and the polycondensation of the compounds formed with the presence of 4-(dimethylamino)-pyridine as a catalys

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19

Valueva, A., R. Romanov, S. Mariasina, M. Elisеev, and E. Rodina. "AB0935 HYDROLYSIS OF INORGANIC PYROPHOSPHATE IN HUMAN SYNOVIAL FLUID BY IMMOBILIZED PYROPHOSPHATASES." Annals of the Rheumatic Diseases 79, Suppl 1 (2020): 1767.3–1767. http://dx.doi.org/10.1136/annrheumdis-2020-eular.5321.

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Background:Calcium pyrophosphate deposition (CPPD) disease, alternatively known as pseudogout, is a type of arthropathy caused by a deposition of microcrystals of calcium pyrophosphate (CaPPi) in joint tissues, particularly in fibrocartilage and hyaline cartilage. Up to date, specific treatment of CPPD disease has not been developed. Conventional therapy is focused on anti-inflammatory and immunosuppressive treatment aimed at the prevention of acute symptoms. Previously we suggested for this purpose inorganic pyrophosphatases (PPases) immobilized on nanodiamonds of detonation synthesis (NDs) [

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20

Wang, Xiaoyan, Yu Hong, and Xiaoya Liu. "The Effect of Different Sludge Pretreatment Methods on Microalgae Performance and the Release of Pollutants in Hydrolysis Acidification Solutions." Water 15, no. 16 (2023): 2873. http://dx.doi.org/10.3390/w15162873.

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Waste-activated sludge disposal has now become a serious global problem. After pretreatment, sludge was hydrolyzed and acidified to release nutrients. The effects of different sludge pretreatments on microalgal growth and contaminants in a hydrolysis acidification solution were compared. Alkalinization (NaOH), ultrasound (US), and combined pretreatment techniques (US-NaOH) all promoted contaminants’ release from the sludge by triggering microbial cell wall rupture and extracellular polymer dissolution. The organics released from the pretreated sludge were more readily and rapidly consumed due

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21

Tsygankova, M. V., E. A. Perminova, M. T. Chukmanova, and O. A. Raikina. "BISMUTH TELLURID WASTE PROCESSING." Fine Chemical Technologies 12, no. 1 (2017): 39–44. http://dx.doi.org/10.32362/2410-6593-2017-12-1-39-44.

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The main stages of bismuth telluride processing comprising sintering with NaOH, leaching and precipitation were investigated. Bi2Te3 samples produced by "ADV Engineering" were used as starting compounds. The studies revealed regularities of tellurium behavior during the sintering of Bi2Te3 with NaOH and the resulting the solid residue leaching. It was noted that annealing at 350-450°C with NaOH transforms tellurium into Na2TeO3, which is an appropriate form for further dissolution and separation from bismuth. Increasing temperature results in Na2TeO3 oxidation and formation of the water-insolu

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Lazău, Ioan, and Cosmin Vancea. "New vitreous matrix for chromium waste immobilization." Open Chemistry 12, no. 7 (2014): 763–68. http://dx.doi.org/10.2478/s11532-014-0509-3.

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AbstractCommon waste glasses (window, bottle glass or tableware) with fly ash form a glass matrix for chromium waste immobilization. Soluble chromium from residual waters was adsorbed on fly ash; the resulting solid contained 23.7% Cr6+. The three glass wastes, chromium-containing fly ash, and borax were used to make glasses in weight ratios waste glass: borax: fly ash of 1: 1: 1 and 1.5: 0.5: 1. The hydrolytic stability ranged from 18.46 to 28.13 µg g−1 soluble Na2O, qualifying them in the HGB1 class. The chemical stability, characterized by the dissolution rate, was 0.011–0.077 µg cm−2 h−1,

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Rosenau, T., A. Potthast, A. Hofinger, H. Sixta, and P. Kosma. "Hydrolytic Processes and Condensation Reactions in the Cellulose Solvent System N,N-Dimethylacetamide/Lithium Chloride. Part 1." Holzforschung 55, no. 6 (2001): 661–66. http://dx.doi.org/10.1515/hf.2001.107.

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Summary Refluxing of cellulose samples in N,N-dimethylacetamide (DMAc, 1), or in DMAc containing low concentrations of LiCl, is a common protocol to facilitate dissolution of the cellulose for GPC measurements. The formation of chromophoric condensation products, whose structures have been elucidated for the first time, and of secondary chromophores by reaction with carbohydrate structures has been demonstrated. DMAc containing traces of water is slowly hydrolyzed to dimethylammonium acetate (2) under reflux conditions. The reaction is accelerated in the presence of lithium chloride. In contra

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Ю.М., ЮХИН, КОЛЕДОВА Е.С., ДАМИНОВ А.С., ТИМАКОВА Е.В., КУЗНЕЦОВ В.А. та ШЕИНА О.Д. "ПОЛУЧЕНИЕ ВИСМУТА И ЕГО СОЕДИНЕНИЙ ВЫСОКОЙ ЧИСТОТЫ". Химия в интересах устойчивого развития 32, № 5 (2024): 708–17. http://dx.doi.org/10.15372/khur2024604.

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Исследован процесс растворения металлического висмута в азотной кислоте и проведено сравнение экологически чистых способов получения азотнокислых растворов висмута, основанных на предварительном окислении висмута, а также на его растворении в присутствии карбамида или нитрата аммония. Установлено, что растворение висмута в присутствии нитрата аммония при молярном отношении нитрата аммония к висмуту, равном 1.5-3.5, и температуре 70±5 °С позволяет устранить выделение оксидов азота в газовую фазу и получить раствор с высокой концентрацией по висмуту. Показана целесообразность двухстадийной гидро

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Nikalje, Anna Pratima G., and Vishnu P. Choudhari. "Development and Validation of a Stability-Indicating HPLC-Photodiode Array Detector Method for Formulation Analysis and Degradation Kinetics and Dissolution Studies of Mycophenolate Sodium and HPLC/MS/MS Characterization of its Stress Degradation Products." Journal of AOAC INTERNATIONAL 96, no. 3 (2013): 593–98. http://dx.doi.org/10.5740/jaoacint.11-063.

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Abstract A simple stability-indicating isocratic RP-HPLC method was developed and validated for the determination of mycophenolate sodium and its alkali degradation product. Forced degradation of the drug was carried out under thermolytic, photolytic, acid/base hydrolytic, and oxidative stress conditions. Alkali degradation product DP1 was isolated, and separation of stress degradation products was achieved on a Symmetry C18 (250 × 4.6 mm × 5.0 μm) column using the mobile phase methanol–acetate buffer adjusted with acetic acid to pH 6.0 (76 + 24, v/v) at a 0.55 mL/min flow rate and 50°C. Data

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Le, Huu Tuan, Evgenij V. Korolev, Anna N. Grishina, and Vitaly A. Gladkikh. "Reasons for Reduced Moisture Resistance of Sulfur-Extended Asphalt Concrete." Materials 14, no. 23 (2021): 7218. http://dx.doi.org/10.3390/ma14237218.

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The paper presents the results of a study of the mechanism for reducing the moisture resistance of sulfur-extended asphalt concrete. It is shown that a decrease in moisture resistance occurs due to the occurrence of chemical and physical processes. At the same time, it was found that during the manufacture of sulfur-bitumen composites, toxic gases H2S and SO2 are formed, which are capable of interacting with a mineral filler, as well as the interaction of sulfur with a mineral powder with the formation of sulfur-containing water-soluble salts, the extraction of which leads to a decrease in the

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Rex, Rachel, Soumik Siddhanta, and Ishan Barman. "Role of Aqueous-Phase Calcination in Synthesis of Ultra-Stable Dye-Embedded Fluorescent Nanoparticles for Cellular Probing." Applied Spectroscopy 75, no. 8 (2021): 1012–21. http://dx.doi.org/10.1177/00037028211027597.

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Fluorescence imaging is a major driver of discovery in biology, and an invaluable asset in clinical diagnostics. To overcome quenching limitations of conventional fluorescent dyes and further improve intensity, nanoparticle-based constructs have been the subject of intense investigation, and within this realm, dye-doped silica-coated nanoparticles have garnered significant attention. Despite their growing popularity in research, fluorescent silica nanoparticles suffer from a significant flaw. The degradation of these nanoparticles in biological media by hydrolytic dissolution is underreported,

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Tamiru, Gedyon, and Diriba Muleta. "The Effect of Rhizobia Isolates Against Black Root Rot Disease of Faba Bean (Vicia faba L) Caused by Fusarium solani." Open Agriculture Journal 12, no. 1 (2018): 131–47. http://dx.doi.org/10.2174/1874331501812010131.

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Objective:Evaluate for potential biocontrol agent by assessing isolates forin vitroinhibitory efficacy, probable mechanisms to inhibit fungal pathogen and effect on growth of Faba bean infected withF. solani.Methods:The effect of Rhizobium isolates on the development of radial mycelium ofF. solaniin PDA medium were testedin vitro. The experiments were carried out using the dual culture technique. Isolates that showed inhibitory effect againstF. solaniin vitrowere tested to assess hydrolytic enzymes and growth promoting traits. Subsequently, the three Rhizobium isolates that showed the greatest

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Pinna, Roberto, Paolo Usai, Mariantonietta Arrica, and Egle Milia. "Effectiveness of Two Self-Etchings Bonded Clinically in Caries Affected Dentin with Homogeneous Smear Layer." Journal of Nanomaterials 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/489183.

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Aim. To examine the interface of two self-etchings in carious affected dentin (CAD), under clinical conditions.Materials and Methods. Class I cavities were prepared in 21 carious premolars, refining them by the use of a fine diamond bur in order to create similar smear layer interference. The mild self-etching Clearfil SE Bond (CSE), pH = 2.0, and the strong Tyrian SPE-One Step Plus (TSO), pH = 0.5, were applied followed by a composite. Teeth were extracted and processed for TEM. The primer’s osmolarity of the self-etchings was also calculated using a microosmometer.Results. CSE hybrid layer r

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Alekseeva, L. S., A. V. Nokhrin, A. I. Orlova, et al. "Chemical stability of Nd0.33Zr2(PO4)3 fine-grained ceramics with the kosnarite structure at high temperatures." Perspektivnye Materialy 4 (2024): 5–16. http://dx.doi.org/10.30791/1028-978x-2024-4-5-16.

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Chemical stability of Nd0.33Zr2(PO4)3 fine-grained ceramics, which can be used for immobilization of REE that are part of the HLW was studied. Single-phase Nd0.33Zr2(PO4)3 submicron powders with the structure of the mineral kosnarite were obtained by colloid-chemical synthesis. Powders were obtained by successive annealing at 600, 800, and 900 °C for 6 h at each stage. Ceramics Nd0.33Zr2(PO4)3 has been obtained by Spark Plasma Sintering (SPS) method. The relative density of ceramics was 89.9 %; the average grain size was 5 – 20 μm. The chemical stability of the ceramics in the static mode at 9

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Ma, Nan, Hang Lv, Solomon Boamah, Shuwu Zhang, and Bingliang Xu. "Purification and Identification of the Nematicidal Activity of S1 Family Trypsin-Like Serine Protease (PRA1) from Trichoderma longibrachiatum T6 Through Prokaryotic Expression and Biological Function Assays." Genes 15, no. 11 (2024): 1437. http://dx.doi.org/10.3390/genes15111437.

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Background/Objectives: Heterodera avenae is a highly significant plant-parasitic nematode, causing severe economic losses to global crop production each year. Trichoderma species have been found to parasitize nematodes and control them by producing enzymes that degrade eggshells. The T. longibrachiatum T6 (T6) strain has been demonstrated the parasitic and lethal effects on H. avenae cysts and eggs, associated with the increased serine protease activity and trypsin-like serine protease gene (PRA1) expression. Methods: Our present study aimed to purify the recombinant PRA1 protease through a pr

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Korshunova, T. Yu, E. V. Kuzina, S. R. Mukhamatdyarova, Yu Yu Sharipova, and M. G. Iskuzhina. "Bacteria-destructors with growth-stimulating properties for use in ecological biotechnology." Theoretical and Applied Ecology, no. 2 (June 25, 2024): 117–24. http://dx.doi.org/10.25750/1995-4301-2024-2-117-124.

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A topical research trend in ecological biotechnology is the search and study of microorganisms-destructor resistant to additional pollutants and growth-stimulating to remediant-plants. Four strains of hydrocarbon-oxidizing microorganisms isolated from soil samples were identified on the basis of cultural-morphological, physiological-biochemical properties and a comparative analysis of the gene encoding 16S rRNA. The bacteria Acinetobacter calcoaceticus UOM 22 and UOM 29, A. courvalinii UOM 35 showed a significant degree of oil biodegradation in a liquid medium at 24 and 8 °C (93.0–95.6% and 78

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Halford, John, and Cheng-fu Chen. "The Role of APTES as a Primer for Polystyrene Coated AA2024-T3." Micromachines 15, no. 1 (2023): 93. http://dx.doi.org/10.3390/mi15010093.

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(3-Aminopropyl)triethoxysilane (APTES) silane possesses one terminal amine group and three ethoxy groups extending from each silicon atom, acting as a crucial interface between organic and inorganic materials. In this study, after APTES was deposited on the aluminum alloy AA2024-T3 as a primer for an optional top coating with polystyrene (PS), its role with regard to stability as a protection layer and interaction with the topcoat were studied via combinatorial experimentation. The aluminum alloy samples primed with APTES under various durations of concentrated vapor deposition (20, 40, or 60

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Mestareehi, Aktham H. "Optimized and Validated Stability-Indicating RP-HPLC Method for Comprehensive Profiling of Process-Related Impurities and Stress-Induced Degradation Products in Rivaroxaban (XARELTO)®." International Journal of Molecular Sciences 26, no. 10 (2025): 4744. https://doi.org/10.3390/ijms26104744.

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An isocratic reverse-phase high-performance liquid chromatography (RP-HPLC) method, coupled with photodiode array detection (PDA), was developed for the identification and characterization of stress degradation products and an unknown process-related impurity of rivaroxaban in bulk drug form. Rivaroxaban, a selective and direct Factor Xa inhibitor, underwent forced degradation under hydrolytic (acidic, alkaline, and neutral), photolytic, thermal, and oxidative stress conditions, following the ICH’s guidelines. The drug displayed significant susceptibility to acid, base, and oxidative environme

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Parsons, Chris T., Fereidoun Rezanezhad, David W. O'Connell, and Philippe Van Cappellen. "Sediment phosphorus speciation and mobility under dynamic redox conditions." Biogeosciences 14, no. 14 (2017): 3585–602. http://dx.doi.org/10.5194/bg-14-3585-2017.

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Abstract. Anthropogenic nutrient enrichment has caused phosphorus (P) accumulation in many freshwater sediments, raising concerns that internal loading from legacy P may delay the recovery of aquatic ecosystems suffering from eutrophication. Benthic recycling of P strongly depends on the redox regime within surficial sediment. In many shallow environments, redox conditions tend to be highly dynamic as a result of, among others, bioturbation by macrofauna, root activity, sediment resuspension and seasonal variations in bottom-water oxygen (O2) concentrations. To gain insight into the mobility a

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Mohammed Basheer Alameen, Khaled A. Elraies, Abdullah Almansour, Mysara Mohyaldinn, and Haithm Hagar. "Quartz Hydrolysis Analysis of Pure Quartz for Enhanced Oil Production; Influence of Time, pH, and Salinity on Hydrolysis." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 111, no. 2 (2024): 99–106. http://dx.doi.org/10.37934/arfmts.111.2.99106.

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The issue of sand production in reservoirs has been recognized as a critical problem in oil and gas fields for several years due to its numerous negative impacts on oil and gas production. Sand production from wells can damage both surface and subsurface equipment, reduce well productivity, and negatively impact the oil production economy. Oil production challenges arise when sand production increases as the water cut increases. Several factors have been associated with this phenomenon, with the most critical factor being silica dissolution - a chemical reaction between quartz and water that d

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Hedenquist, Jeffrey W., and Antonio Arribas. "Exploration Implications of Multiple Formation Environments of Advanced Argillic Minerals." Economic Geology 117, no. 3 (2022): 609–43. http://dx.doi.org/10.5382/econgeo.4880.

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Abstract Advanced argillic minerals, as defined, include alunite and anhydrite, aluminosilicates (kaolinite, halloysite, dickite, pyrophyllite, andalusite, zunyite, and topaz), and diaspore. One or more of these minerals form in five distinctly different geologic environments of hydrolytic alteration, with pH 4–5 to &lt;1, most at depths &lt;500 m. (1) Where an intrusion-related hydrothermal system, typical of that associated with porphyry Cu ± Au deposits, evolves to white-mica stability, continued ascent and cooling of the white-mica–stable liquid results in pyrophyllite (± diaspore)

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Jeong, Lee, Yang, Potthast, and Kang. "Cellulose Degradation by Calcium Thiocyanate." Polymers 11, no. 9 (2019): 1494. http://dx.doi.org/10.3390/polym11091494.

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The dissolution process of cellulose aerogels is an important part of their production. However, if the cellulose is severely degraded during the dissolution process, the quality may be low. To evaluate the degradation of cellulose during the dissolution process using calcium thiocyanate, the hydrolysis and oxidation of cellulose were evaluated by the change in absolute molecular weight and by the changes in the content of carboxyl and carbonyl groups introduced into the cellulose hydroxyl group, respectively. A noteworthy hydrolysis phenomenon was found in the cellulose dissolution process. T

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Avila Salazar, Dahiana A., Peter Bellstedt, Atsuhiro Miura, Yuki Oi, Toshihiro Kasuga, and Delia S. Brauer. "Unravelling the dissolution mechanism of polyphosphate glasses by 31P NMR spectroscopy: ligand competition and reactivity of intermediate complexes." Dalton Transactions 50, no. 11 (2021): 3966–78. http://dx.doi.org/10.1039/d0dt03381b.

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Acharya, Sanjit, Yang Hu, and Noureddine Abidi. "Cellulose Dissolution in Ionic Liquid under Mild Conditions: Effect of Hydrolysis and Temperature." Fibers 9, no. 1 (2021): 5. http://dx.doi.org/10.3390/fib9010005.

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This study investigated the effect of acid hydrolysis of cellulose on its dissolution under mild conditions in ionic liquid, 1-butyl-3-methylimidazolium acetate/N,N-dimethylacetamide (BMIMAc/DMAc). Acid hydrolysis of high molecular weight (MW) cotton cellulose (DP > 4000) was carried out to produce hydrolyzed cotton (HC) samples for dissolution. The HC samples were characterized using gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), and the dissolution process was monitored using polarized lig

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Reyes, Guillermo, María Graciela Aguayo, Arturo Fernández Pérez, Timo Pääkkönen, William Gacitúa, and Orlando J. Rojas. "Dissolution and Hydrolysis of Bleached Kraft Pulp Using Ionic Liquids." Polymers 11, no. 4 (2019): 673. http://dx.doi.org/10.3390/polym11040673.

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Forestry industries in Chile are facing an important challenge—diversifying their products using green technologies. In this study, the potential use of Ionic Liquids (ILs) to dissolve and hydrolyze eucalyptus wood (mix of Eucalyptus nitens and Eucalyptus globulus) kraft pulp was studied. The Bleached Hardwood Kraft Pulp (BHKP) from a Chilean pulp mill was used together with five different ILs: 1-butyl-3-methylimidazolium chloride [bmim][Cl], 1-butyl-3-methylimidazolium acetate [bmim][Ac], 1-butyl-3-methylimidazolium hydrogen sulfate [bmim][HSO4], 1-ethyl-3-methylimidazolium chloride [emim][Cl

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Tkach, E. P. "The content of manganese in soddy brown soils of the Transcarpathian Mountain Valleys." Fundamental and Applied Soil Science 16, no. 1-2 (2015): 60–65. http://dx.doi.org/10.15421/041506.

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The soil covering of Transcarpathia, which is used for cultivation of crops, is rather heterogeneous as to genetic features of soils. This is mostly caused by the climatic conditions of corresponding natural zones. Brown mountain soils, soddy brown soils, meadow brown soils and mountain meadow soils have originated in mountainous areas on mountain ranges and slopes of different altitude, which are different in terms of mechanical makeup and are well drained. They are characterized by high content of inaccessible humus (in which fulvic acids predominate), acid reaction of soil solution and evid

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Liang, Jiezhen, Xiaopeng Chen, Linlin Wang, Xiaojie Wei, Feifei Qiu, and Chaochao Lu. "Hydrolysis behaviors of sugarcane bagasse pith in subcritical carbon dioxide–water." RSC Advances 6, no. 101 (2016): 99322–30. http://dx.doi.org/10.1039/c6ra18436g.

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Chen, Wenjun, Yuechao Yang, Xue Lan, Baolong Zhang, Xiaogang Zhang та Tiancheng Mu. "Biomass-derived γ-valerolactone: efficient dissolution and accelerated alkaline hydrolysis of polyethylene terephthalate". Green Chemistry 23, № 11 (2021): 4065–73. http://dx.doi.org/10.1039/d1gc00665g.

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Kim, Han Ung, Jong Wha Kim, Sumin Seo, and Jungho Jae. "Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts." RSC Advances 13, no. 12 (2023): 8153–62. http://dx.doi.org/10.1039/d2ra08224a.

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The pretreatment of cellulose using the dissolution/regeneration process in ionic liquid and deep eutectic solvents leads to substantially higher hydrolysis efficiency than the conventional ball-milling pretreatment.

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Shukla, Tanuj, Shipika Sundriyal, Lukasz Stachnik, and Manish Mehta. "Carbonate and silicate weathering in glacial environments and its relation to atmospheric CO2 cycling in the Himalaya." Annals of Glaciology 59, no. 77 (2018): 159–70. http://dx.doi.org/10.1017/aog.2019.5.

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ABSTRACTThis paper presents new insights into the global carbon cycle related to CO2 consumption from chemical denudation in heavily glacierised Himalayan catchments. Data from previous studies of solute concentrations from glacierised catchments were reprocessed to determine the regional scale of CO2 consumption and solute hydrolysis. The results show that ~90% of the SO42− is derived from crustal sulphide oxidation and ~10% from aerosols and sea salts. However, HCO3− flux calculation estimates contribution from sulphide oxidation to carbonate dissolution (SO-CD) (~21%), similar to the contri

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Wei, Haoyang, Xiangqian Wei, Siwei Liu, et al. "Insights on cellulose hydrolysis in the porous structure of biomass particles using the lattice Boltzmann method." JUSTC 52, no. 7 (2022): 2. http://dx.doi.org/10.52396/justc-2021-0268.

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Lignocellulose biomass has been recognized as one of the most promising sources of low-cost and renewable biofuels, and its conversion into alternative fuels and valuable platform molecules has attracted widespread attention. The porous solid residue from lignocellulose biomass, which was pretreated by steam-stripping, is catalyzed by dilute sulfuric acid to form levulinic acid (LA). The process includes porous media diffusion, multicomponent reactive transport, liquid-solid interface reaction, and cellulose dissolution. Understanding the interactions between these complex physicochemical proc

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Conroy, Jessica, and Michel Couturier. "Dissolution of minerals during hydrolysis of fish waste solids." Aquaculture 298, no. 3-4 (2010): 220–25. http://dx.doi.org/10.1016/j.aquaculture.2009.11.013.

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Fang, Zhen, and Chun Fang. "Complete dissolution and hydrolysis of wood in hot water." AIChE Journal 54, no. 10 (2008): 2751–58. http://dx.doi.org/10.1002/aic.11577.

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Nikolic, Jelena, Mihajlo Tosic, Snezana Grujic, et al. "Dissolution behaviour of a polyphosphate glass in simulated body fluid." Journal of the Serbian Chemical Society 82, no. 3 (2017): 329–42. http://dx.doi.org/10.2298/jsc161031009n.

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In this work, the dissolution behavior of a polyphosphate glass, with the composition 45P2O5?3SiO2?25K2O?15CaO?10MgO?ZnO?MnO (mol %), in simulated body fluid (SBF) at a temperature of 37 ?C for different times was studied. Two powder sizes of the glass (granulation: 0.1?0.3 and 0.3?0.65 mm) and the bulk glass were investigated. The dissolution experiments were conducted under stationary conditions. Changes in the normalized mass release, normalized concentration of ions, pH values, and surface morphology were determined as a function of the dissolution time. The initial rates of glass powder d

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