Academic literature on the topic 'Hydroxy compounds'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Hydroxy compounds.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Hydroxy compounds"

1

Behrami, Aziz, and Kozeta Vaso. "Antibacterial activity of coumarine derivatives synthesized from 4-amino7-chloro-2-oxo-2H-chromen -3-carbaldehyde and comparison with standard drug." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 6 (2017): 4108–11. http://dx.doi.org/10.24297/jac.v12i6.6153.

Full text
Abstract:
In present paper , we report the organic syntheses of three compounds from 4-Amino-7-chloro -2-oxo-2H –chromen -3carbaldehyde and describe the results of antibacterial activity of purified compounds.7-Chloro-4-[(2-hydroxy-benzylidene)amino]-2-oxo-2H-chromen-3-carbaldehyde(1a).4-[(2-Hydroxy-benzylidene)-amino]-7-(4-hydroxy-phenylamino)-2-oxo-2Hchromen-3-carbaldehyde (2a) ,([4-[(2-Hydroxy-benzylidene)-amino]-7-(4-hydroxyl-phenylamino)-2-oxo-chromen-3ylmethylene]-amino)-acetic acid (3a),have been synthesized and characterized using melting points , IR spectra , 1H-NMR and 13C-NMR spectra. The a
APA, Harvard, Vancouver, ISO, and other styles
2

Kamble, Pallavi, and Sailesh Wadher. "SYNTHESIS, IN VITRO ANTIOXIDANT AND ANTIMICROBIAL EVALUATION OF 3-HYDROXY CHROMONE DERIVATIVES." Asian Journal of Pharmaceutical and Clinical Research 11, no. 3 (2018): 259. http://dx.doi.org/10.22159/ajpcr.2018.v11i3.22984.

Full text
Abstract:
Objective: The objective of the present study was to synthesize a series of 3-hydroxychromone derivatives and to evaluate its in vitro antioxidant and antimicrobial activities.Methods: 3-hydroxy chromones were synthesized using an algar flynn oyamada method which includes oxidative cyclization of 2-hydroxy chalcones in basic solution by hydrogen peroxide. 2-hydroxy chalcones were synthesized by Claisen-Schmidt condensation of substituted 2-hydroxy acetophenones with substituted aromatic aldehydes using polyethylene glycol-400 as a recyclable solvent. The synthesized compounds were evaluated fo
APA, Harvard, Vancouver, ISO, and other styles
3

Yang, Nian-Yun, Yi-Fang Yang, and Kun Li. "Analysis of Hydroxy Fatty Acids from the Pollen of Brassica campestris L. var. oleifera DC. by UPLC-MS/MS." Journal of Pharmaceutics 2013 (October 10, 2013): 1–6. http://dx.doi.org/10.1155/2013/874875.

Full text
Abstract:
Ultraperformance liquid chromatography coupled with negative electrospray tandem mass spectrometry (UPLC-ESI-MS/MS) was used to determine 7 hydroxy fatty acids in the pollen of Brassica campestris L. var. oleifera DC. All the investigated hydroxy fatty acids showed strong deprotonated molecular ions [M–H]−, which underwent two major fragment pathways of the allyl scission and the β-fission of the alcoholic hydroxyl group. By comparison of their molecular ions and abundant fragment ions with those of reference compounds, they were tentatively assigned as 15,16-dihydroxy-9Z,12Z-octadecadienoic a
APA, Harvard, Vancouver, ISO, and other styles
4

Al-Hazmy, Sadeq M., Mohamed Oussama Zouaghi, Jamal N. Al-Johani, et al. "Chemosensing Properties of Coumarin Derivatives: Promising Agents with Diverse Pharmacological Properties, Docking and DFT Investigation." Molecules 27, no. 18 (2022): 5921. http://dx.doi.org/10.3390/molecules27185921.

Full text
Abstract:
In this work, a three-component reaction of 3-acetyl-4-hydroxycoumarine, malononitrile, or cyanoacetate in the presence of ammonium acetate was used to form coumarin derivatives. The chemical structures of new compounds were identified by 1H, 13C NMR and an elemental analysis. These compounds were examined in vitro for their antimicrobial activity against a panel of bacterial strains. In addition, these compounds were investigated for antioxidant activities by superoxideradical, DPPH (2,2-Diphenyl-1-picrylhydrazyl), and hydroxyl radical scavenging assays, in which most of them displayed signif
APA, Harvard, Vancouver, ISO, and other styles
5

J., A. Patel, D. Mistry B., and R. Desai K. "Synthesis of some novel 4-thiazolidinone compounds and their application as potential antimicrobial agent." Journal of Indian Chemical Society Vol. 83, Oct 2006 (2006): 1041–43. https://doi.org/10.5281/zenodo.5831373.

Full text
Abstract:
Department of Chemistry, B. K. M. Science College, Valsad-396 001, Gujarat, India <em>Manuscript received 14 July 2005, revised 4 January 2006, accepted 28 June 2006</em> 3-Chloro-1-[5&#39; -hydroxy-2&#39; -(phenyldiazenyl) phenyll-4-[2&quot; -hydroxy-5&quot; -(1<em>&quot;&#39; </em>,3<em>&#39;&quot;</em> -benzothiazol-2<em>&quot;&#39;</em> -yl-diazenyl)phenyl)-2-azetidinone (4a-p),3-[5&#39;-hydroxy-2&#39;-(phenyldiazenyl)phenyl]-2-[2&quot; -hydrox)&middot;-5&quot; -(1&quot;&#39; ,3&#39;&quot; -benzothiazol-2&quot;&#39; -yl-diazenyl) phenyl)- 4-thiazolidinone (Sa-p) and 3-[5&#39; -hydroxy-2&#3
APA, Harvard, Vancouver, ISO, and other styles
6

Coleman, W. M., and Bert M. Gordon. "Examinations of the Matrix Isolation Infrared Spectra of Organic Compounds: PART XIII." Applied Spectroscopy 43, no. 2 (1989): 305–10. http://dx.doi.org/10.1366/0003702894203246.

Full text
Abstract:
Matrix isolation Fourier transform infrared (MI/FT-IR) spectra have been collected on a series of internal alkenes, a series of hydroxy-substituted ketones, and a series of hydroxy-substituted esters. Assignments of double bond position and geometry are possible in the alkenes, due to the resolution of absorption bands of very similar energies. The location of the absorption bands for the alkenes was found to be very similar to the values found for the vapor-phase and condensed-phase spectra. Multiple carbonyl absorptions have been found in the MI/FT-IR spectra of the hydroxy ketones and hydro
APA, Harvard, Vancouver, ISO, and other styles
7

Rubtsova, Daria D., Alexandra A. Bobyleva, Daria D. Lezhnina, Sofia V. Polikarpova, Polina A. Rozhkova, and Vladimir L. Gein. "Synthesis of 5-aryl-3-hydroxy-1-(2-hydroxypropyl)-4-(furyl-2-carbonyl)- 3-pyrrolin-2-ones and 5-aryl-3-hydroxy-1-(3-hydroxypropyl)- 4-(furyl-2-carbonyl)-3-pyrrolin-2-ones." Butlerov Communications 63, no. 9 (2020): 26–30. http://dx.doi.org/10.37952/roi-jbc-01/20-63-9-26.

Full text
Abstract:
In this work, pyrrolidin-2-ones and their derivatives are considered as a promising class of non-aromatic heterocyclic compounds. Their structure is found in the nuclei of many natural products and biologically active molecules. In pharmacy the possibility of introducing various substituents into the nucleus of pyrrolidin-2-ones is a great importance for the synthesis of new medicinal molecules with improved biological activity. Nowadays the synthesis of new active compounds by introducing various substituents at the C1-, C4- and C5-position of 3-hydroxy-3-pyrrolin-2-one has been little studie
APA, Harvard, Vancouver, ISO, and other styles
8

Bezuglov, A. N., L. G. Minyaeva, K. A. Lysenko, and V. V. Mezheritskii. "peri-hydroxy acenaphthoyl compounds." Russian Journal of Organic Chemistry 46, no. 3 (2010): 336–43. http://dx.doi.org/10.1134/s1070428010030061.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ribeiro da Silva, Ana Luisa, and Maria D. M. C. Ribeiro da Silva. "Energetic and Structural Studies of Two Biomass-Derived Compounds: 6- and 7-hydroxy-1-indanones." Applied Sciences 10, no. 23 (2020): 8512. http://dx.doi.org/10.3390/app10238512.

Full text
Abstract:
The energetic study of 6-hydroxy-1-indanone and 7-hydroxy-1-indanone was performed using experimental techniques and computational calculations. The enthalpies of combustion and sublimation of the two compounds were determined and allowed to derive the corresponding gas-phase standard molar enthalpies of formation. For this purpose, static-bomb combustion calorimetry and drop-method Calvet microcalorimetry were the experimental techniques used. Further, the enthalpy of fusion of each compound was obtained from scanning differential calorimetry measurements. Additionally, the gas-phase standard
APA, Harvard, Vancouver, ISO, and other styles
10

Duke, Stephen O., and John Lydon. "Herbicides from Natural Compounds." Weed Technology 1, no. 2 (1987): 122–28. http://dx.doi.org/10.1017/s0890037x00029304.

Full text
Abstract:
Phytotoxic compounds from plants and microorganisms represent a wide range of chemistries and mechanisms of action that have potential in the design and development of new herbicides. Although several natural products of higher plants have been patented as herbicides, none have been developed commercially. Many microbial products have been patented as herbicides and several have been or are being developed, including bialophos {L-2-amino-4-[(hydroxy)(methyl)phosphinoyl] -butyryl-L-alanyl-L-alanine} and glufosinate [L-2-amino-4-(hydroxyl)(methyl)(phosphinoyl)-butyric acid]. The new tools of mol
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Hydroxy compounds"

1

Bourne, Susan Ann. "Inclusion properties of hydroxy host compounds." Doctoral thesis, University of Cape Town, 1991. http://hdl.handle.net/11427/22504.

Full text
Abstract:
Inclusion compounds can be defined as those in which one type of molecule is able to enclose another molecule (usually smaller) within its structure, leaving the bonding systems of both components unchanged. The molecular network and the enclosed species are usually referred to as the "host" and "guest" respectively. The ability of four hydroxyl-containing molecules to form inclusion compounds was studied. Each of these molecules has a tetrahedral carbon or silicon atom bonded to an hydroxyl group and shielded by two or three aromatic moieties. The bulkiness of these molecules prevents them fr
APA, Harvard, Vancouver, ISO, and other styles
2

Hansell, D. P. "Investigations into the reactions of some N-hydroxy compounds." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375053.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chambers, Eric James. "Conformational studies of fluoro- and hydroxy- compounds in solution." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316776.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Koniotou, Rodothea. "An NMR investigation of the conformations of cyclic hydroxy compounds." Thesis, University of Liverpool, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402325.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Simpson, Linda. "Trivalent group 13 metal complexes of N-substituted-3-hydroxy-2-methyl-4-pyridinones." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28885.

Full text
Abstract:
The compounds tris(N-ռ-propyl-3-hydroxy-2-methyl-4-pyridinonato) aluminum(III), -gallium(III), and -indium(III) and tris(N-ռ-butyl-3-hydroxy-2-methyl-4-pyridinonato)aluminum(III), -gallium(III), and -indium(III) were synthesized. All six compounds were prepared via the metal template effect. They were characterized by IR, FAB-MS, ¹H NMR, ²⁷Al NMR, and elemental analysis. Three of the six complexes were studied by single-crystal X-ray diffraction. They formed trihydrates, unlike their N-methyl and N-ethyl analogues, which formed dodecahydrates. The ռ-butyl complex Al(C₁₀H₁₄N0₂)₃‧3H₂0 (1) and ռ-
APA, Harvard, Vancouver, ISO, and other styles
6

Sutivisedsak, Nongnuch. "Synthesis of [alpha]-hydroxy and fluoro phosphonates and cyclic ether-containing natural products." Diss., St. Louis, Mo. : University of Missouri--St. Louis, 2008. http://etd.umsl.edu/r3246.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Birklund, Andersen Kristine. "Polarisation spectroscopic studies of beta-hydroxy carbonyl compounds with intramolecular H-bonding /." Roskilde : Department of Life Sciences and Chemistry, 1999. http://www.rub.ruc.dk/epublisher/resume_polarisation_spec...pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mei, Mawonga Newton. "A model route to a brominated hydroxy[2,3-c]pyran- a potential precursor to extended quinones /." [S.l. : s.n.], 2008. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1010&context=td_cput.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Lam, Winnie Wai Yin. "Stereochemical and mechanistic studies on 2-hydroxy-6-oxonona-2,4-diene-1,9-dioic acid 5,6-hydrolase." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296994.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Mei, Mawonga N. "A model route to a brominated hydroxy[2,3-c]pyran- a potential precursor to extended quinones." Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/749.

Full text
Abstract:
A thesis submitted in fulfilment of the requirements for the degree Magister Technologiae (Chemistry) in the Faculty of Applied Sciences, Department of Chemistry, Cape Peninsula University of Technology, 2008<br>Green et al. attempted to synthesize linear naphthopyranquinones from a naphthyl dioxolane using a TiCl4 as a catalyst. They managed to synthesise an angular naphthopyran as well as a linear naphthopyran in low yield. They showed that reducing the steric strain at position 1 of the naphthyl dioxolane afforded a low percentage yield of the linear naphthopyran plus an angular one. This t
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Hydroxy compounds"

1

Coppola, Gary M. [ Alpha]-hydroxy acids in enantioselective syntheses. VCH, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Gmehling, J. Vapor-liquid equilibrium data collection: Organic hydroxy compounds : alcohols : supplement 3. DECHEMA, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Gmehling, Jürgen. Vapor-liquid equilibrium data collection: Organic hydroxy compounds : alcohols and phenols : supplement 4. DECHEMA, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Långvik, Vivi-Ann. Formation of the strong mutagen 3-chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone, MX, by chlorination of aromatic model compounds and of fractions of humic water. Åbo Akademi University Press, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Edney, Edward. Hydroxyl radical rate constant intercomparison study. U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Baran, Václav. Uranium (VI)-oxygen chemistry: Uranyl hydroxo complexes, uranates and oxides. Hadronic Press, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

R, Arnts Robert, and Atmospheric Sciences Research Laboratory, eds. Review of the UCR protocol for determination of OH rate constants with VOCs and its applicability to predict photochemical ozone production: Project summary. U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Atkinson, Roger. Kinetics and mechanisms of the gas-phase reactions of the hydroxyl radical with organic compounds. American Chemical Society, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

R, Peyton Gary, and AWWA Research Foundation, eds. Effect of bicarbonate alkalinity on performance of advanced oxidation processes. AWWA Research Foundation and American Water Works Association, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

United States. National Aeronautics and Space Administration., ed. HAN-based monopropellant assessment for spacecraft. National Aeronautics and Space Administration, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Hydroxy compounds"

1

Zenkevich, Igor. "Hydroxy Compounds." In Encyclopedia of Chromatography, Third Edition (Print Version). CRC Press, 2009. http://dx.doi.org/10.1201/noe1420084597.ch226.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zenkevich, Igor. "Hydroxy Compounds." In Encyclopedia of Chromatography, Second Edition. CRC Press, 2005. http://dx.doi.org/10.1201/noe0824727857.ch172.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

"3-Hydroxy sophoranone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0535-1_624.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

"2-Angeloyloxy-5-hydroxy-curcuquinol (1-Hydroxy-2-angeloyloxy-dihydroperezone; 1-Hydroxy-dihydroperezon-2-O-angelate; 2-Angeloyloxy-5-hydroxy-curcuhydroquinone)." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0539-9_557.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

"5-Angeloyloxy-2-hydroxy-curcuquinol (2-Hydroxy-5-angeloyloxy-dihydroperezone; 2-Hydroxy-dihydroperezon-5-O-angelate; 5-Angeloyloxy-2-hydroxy-curcuhydroquinone)." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0539-9_559.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"1-Hydroxy-20,22-Didehydrotaxisterone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0543-6_227.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"20-Hydroxy-24-Hydroxymethylecdysone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0543-6_253.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

"1-Hydroxy-N-methylacridone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0560-3_1168.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

"7-Hydroxy-5,8-dimethoxyflavone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0535-1_306.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

"5-Hydroxy-7,8,2′-trimethoxyflavone." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0535-1_329.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Hydroxy compounds"

1

Wongcharu, Aoraya, Chanikan Sonklin, Cherdchai Laongtiparos, Siriporn Pranee, Samitthichai Seeyangnok, and Nisalak Trongsiriwat. "Chemical Constituents of Black Galingale Rhizome from Hexane Crude Extract and its Nanoemulsion Preparation." In 2024 8th International Conference on Materials Engineering and Nano Sciences & 2024 8th International Conference on Material Engineering and Manufacturing. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-p1fkxg.

Full text
Abstract:
Kaempferia parviflora (Black Galingale) is a medicinal plant in the family Zingiberaceae. It has biological activities, but the bioactive compounds are easily decomposed and poorly soluble. This research has focused on the chemical constituents and bioactivities of the hexane crude extract from K. parviflora rhizomes for nanotechnology. The K. parviflora rhizomes were extracted with hexane by the maceration. The crude extract 39.99 g was obtained and purified using column chromatography to give four pure compounds, namely (1) 5-hydroxy-3,7-dimethoxyflavone, (2) 5-hydroxy-7-methoxyflavone, (3)
APA, Harvard, Vancouver, ISO, and other styles
2

Marliyana, Soerya Dewi, Maulidan Firdaus, Muhamad Widyo Wartono, Diana Inas Utami, and Uly Wulan Apriani. "Evaluation of the Antibacterial Activity of Pinostrobin Derivative Compounds from Ethylation and Allylation Reactions." In 8th International Conference on Advanced Material for Better Future. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-s3ucax.

Full text
Abstract:
Temu Kunci (Kaempferia pandurata Roxb.) is one of the plants from the Zingiberaceae family that contains secondary metabolites derived from flavonoids. Studies on the bioactivity of flavonoid compounds from this species have shown various biological activities such as antibacterial, antioxidant, antiviral, antitumor, antipyretic, anti-inflammatory, analgesic, and insecticidal properties. Pinostrobin (5-hydroxy-7-methoxy flavanone) (1) is the major flavonoid found in the rhizomes of this plant and has been successfully derivatized through ethylation and allylation reactions. Two compounds were
APA, Harvard, Vancouver, ISO, and other styles
3

Kovacheva, Antonina, Diana Rabadjieva, Radost Ilieva, and Rumiana Gergulova. "POLLUTION ASSESSMENT OF THE RIVERS FLOWING THROUGH BULGARIAN CITIES. A COMPARATIVE STUDY." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/5.1/s20.26.

Full text
Abstract:
This research compares the water quality in four river bodies passing through different cities in Bulgaria. An eco-chemical approach was applied including physicochemical and analytical measurements, as well as calculation of different pollution indices and the distribution of the element species as an indicator of their bioavailability. The results from analytical measurements and calculated pollution indices show that all the studied water bodies were polluted regarding P-PO43?, N-NH4+, Mn, and Pb. The highest values were measured in the Struma River, which is the result of both natural orig
APA, Harvard, Vancouver, ISO, and other styles
4

Kannan, S., and R. G. Kelly. "The Role of the Interaction between Oxygen and Catechol in the Pitting Corrosion of Steel in Alkaline Sulfide Solutions." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95578.

Full text
Abstract:
Abstract Black liquor corrosivity is shown to depend on the interaction of the chemical species present. Specifically, an interaction between oxygen and 1,2-dihydroxybenzene compounds (catechols) in alkaline sulfide solutions leads to a distinct increase in the severity of the attack. This increased corrosivity is explained in terms of the oxidation of catechol leading to increased open circuit potentials for steel. The importance of the ratio of sulfide concentration to hydroxyl concentration in the initiation of pitting is stressed. The possible role of catechol in stabilizing metastable pit
APA, Harvard, Vancouver, ISO, and other styles
5

Ali, Nurdin, Syarizal Fonna, Yumaidi Saputra, and Joli Supardi. "Phytochemical Analysis and Antioxidant Properties of <i>Syzygium cumini </i>Fruit as a Corrosion Inhibitor." In The 2nd International Conferences on Applied Engineering, Science, Technology and Innovation. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-d9oud2.

Full text
Abstract:
Syzygium cumini is a plant belonging to the Myrtaceae family and is widely used in medicine and food. However, its application in the engineering field is still very minimal, particularly as an anti-corrosion material. There are also limited studies on the quantitative screening of phytochemical and bioactivity of S. cumini. Therefore, this study aims to analyze the chemical compounds of S. cumini fruit as a corrosion inhibitor as well as determine total tannin (TTC) and flavonoid (TFC) content. The extraction process was carried out with a soxhlet extractor using 96% ethanol solvent. Characte
APA, Harvard, Vancouver, ISO, and other styles
6

Schmitt, G., and N. Stradmann. "Wettability of Steel Surfaces at CO2 Corrosion Conditions I. Effect of Surface Active Compounds in Aqueous and Hydrocarbon Media." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98028.

Full text
Abstract:
Abstract The wettability of carbon steel surfaces with aqueous media (distilled water, brines) and hydrocarbon media (crude oils) was studied under CO2 corrosion conditions at 75 and 80°C and 5 bar CO2 with respect to the effect of surface active compounds (inhibitors, demulsifiers) by quasi-insitu and insitu contact angle measurements in a high pressure test cell. Fatty alcohol ethoxylates, quats, amines and imidazolines influence the hydro-philic/hydrophobic properties of carbonate scales on corroding carbon steel, but inhibiting mechanisms cannot be explained by hydrophobing effects alone.
APA, Harvard, Vancouver, ISO, and other styles
7

Ortiz, A., A. Ruiz-García, J. Genescá, and R. Montoya. "Acidification of the Electrolyte in the Carbon Steel/ Aluminum Alloys Galvanic Couple: Modeling and Experimental Study." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16334.

Full text
Abstract:
Abstract An electrochemical model was developed to predict the transient distribution of species generated during corrosion of carbon steel (CS) /aluminum alloy (AA) galvanic couples under thin NaCl electrolyte films at room temperature (24 °C). Using specific geometrical configurations, strong acidification of the electrolyte, localized above the AA surface and close to the carbon steel electrode, was predicted. However, a small zone evolved (also above the AA surface) between the strong acidified area and the AA/CS joint, where the pH was neutral due to the OH- production on the CS surface.
APA, Harvard, Vancouver, ISO, and other styles
8

Holden, Jim, Andrea Hansen, Alla Furman, Rita Kharshan, and Elizabeth Austin. "Vapor Corrosion Inhibitors in Hydro-Testing and Long Term Storage Applications." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10405.

Full text
Abstract:
Abstract Hydro-testing or hydrostatic testing of metallic equipment such as vessels, piping, valves etc. is an important method for quality control of parts, after production and during use. When water is used in these tests, corrosion of the metal, during and after testing is a concern. Vapor-phase corrosion inhibitors (VCI), when added to water in small concentrations are able to prevent corrosion during testing, during wet storage and after testing. The mechanism of amino-carboxylate based vapor-phase corrosion inhibitors is to prevent corrosion of metals in three phases: within the solutio
APA, Harvard, Vancouver, ISO, and other styles
9

Gauthier, Hélène, Marie-Claude Lessard, Marie-Andrée Ayotte, Germain Larocque, and Michel Vienneau. "Evaluation of Coating Systems for Steel Structures." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01415.

Full text
Abstract:
Abstract In the last decade, the formulation of coatings used for steel structures has seen major changes. These changes mainly concern environmental aspects (green products) and a desire to enhance workers’ safety through the reduction of Volatile Organic Compounds (VOC). The Hydro Quebec network is ageing and priority must be ascertained for painting steel structures. In order to upgrade the coatings used by the company, an investigation and assessment were done of different coating systems used mainly for lattice towers and steel poles (aboveground). The evaluated coatings were chosen based
APA, Harvard, Vancouver, ISO, and other styles
10

Payares, Lily Margareth, Virginia Paredes Méndez, Margareth Dugarte, Juan Carlos Rincón Montenegro, and Lizeth Gutiérrez Púa. "Use of the Microalgae Chlorella Sp. to Biofunctionalized Magnesium Surfaces in Order to Decrease the Rate of Corrosion and Promote the Bone Remodeling Process." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-18514.

Full text
Abstract:
Extended Abstract Frequently, the human body is susceptible to injuries such as the fracture of one or more of its bones, so it is necessary to use implants or some fixation element to keep the fragments of the fracture together, allowing an orderly repair that facilitates healing or compensates the lack or loss of bone tissue. Temporary orthopedic implants have been used clinically to repair broken or fractured bones during the healing process. The most used are plates, screws, nails, wires, and intramedullary nails. It is usually necessary to perform operations to open the injury site, join
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Hydroxy compounds"

1

Prusky, Dov, Noel Keen, and John Browse. Modulation of the synthesis of the main preformed antifungal compound as abasis for the prevention of postharvest disease of C. gloeosporioides in avocado fruits. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7575273.bard.

Full text
Abstract:
The most important pathological factor limiting fruit life after harvest in subtropical fruits are quiescent infections of anthracnose caused by Colletotrichum gloeosporioides. Prusky and Keen elucidated the mechanism of resistance in avocado fruits to quiescent infections of C. gloeosporioides and determined that the major biocide involved is the preformed compound,1-acetoxy-2-hydroxy-4-oxo-heneicosa-13, 15 diene. Two possibilities exist for maintaining fungitoxic levels of antifungal compounds in the tissue of ripening fruits: (i). Prevention of catabolism (ii). Induction of synthesis. Previ
APA, Harvard, Vancouver, ISO, and other styles
2

Naim, Michael, Gary R. Takeoka, Haim D. Rabinowitch, and Ron G. Buttery. Identification of Impact Aroma Compounds in Tomato: Implications to New Hybrids with Improved Acceptance through Sensory, Chemical, Breeding and Agrotechnical Techniques. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585204.bard.

Full text
Abstract:
The tomato, a profitable vegetable crop in both the USA and Israel, has benefited significantly from intensive breeding efforts in both countries, and elsewhere (esp. Holland). : Modem hybrids are highly prolific and resistant to a variety of major pests. They produce attractive, firm fruit for both processing and fresh-marketing. In all cases, however, reduction in flavor and aroma have occurred concomitantly with the increase in yield. Sugars-acids ratio dominate fruit taste, whereas aroma volatiles (potent at minute ppb and ppt levels) contribute to the total characteristic tomato flavor. A
APA, Harvard, Vancouver, ISO, and other styles
3

Prusky, Dov, Noel T. Keen, and Stanley Freeman. Elicitation of Preformed Antifungal Compounds by Non-Pathogenic Fungus Mutants and their Use for the Prevention of Postharvest Decay in Avocado Fruits. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7570573.bard.

Full text
Abstract:
C. gloeosporioides attacks unripe avocado fruits in the orchard. Germinated spores produce appressoria that germinate and breach the cuticle, but the resultant subcuticular hyphae become quiescent and do not develop further until fruit is harvested and ripens. Resistance of unripe avocado to attach by C. gloeosporioides is correlated with the presence of fungitoxic concentrations of the preformed antifungal compound, 1-acetoxy-2-hydroxy-4-oxoheneicosa-12, 15 diene in the pericarp of unripe fruits. The objective of this proposal was to study the signal transduction process by which elicitors in
APA, Harvard, Vancouver, ISO, and other styles
4

Sritularak, Boonchoo, Kittisak Likhitwitayawuid, Pithi Chanvorachote, and Varisa Pongrakhananon. Cytotoxic constituents from Dendrobium spp. : Final report. Chulalongkorn University, 2014. https://doi.org/10.58837/chula.res.2014.28.

Full text
Abstract:
The MeOH extracts of Dendrobium pullchellum Roxb. Ex Lind1. And D. ellipsophyllum Tang &amp; wang (Orchidaceae) showed significant cytotoxic activity against human lung cancer cells. Phytochemical study of the whole plant of D. pullchellum Roxb. Ex Lind1 led to the isolation of seven phenolic compounds, namely, chrysotobibenzyl, chrysotoxine, crepidatin, moscatilin, fimbriatone, (-) –shikimic acid and liriodendrin. The whole plant of D. ellipsophyllum Tang &amp; wang yielded ten phenolic compounds indluding moscatilin, 5,7-dihydroxy-chromen-4-one, 4,5-dihydroxy-2,3-dimethoxy-9,10-dihydrophenan
APA, Harvard, Vancouver, ISO, and other styles
5

Yompakdee, Chulee, and Warintorn Chavasiri. An active compound Kempferia parviflora with inhibitory activity against GSK-3 kinase implicated in type II Diabetes and Alzheimer's disease. Chulalongkorn University, 2015. https://doi.org/10.58837/chula.res.2015.37.

Full text
Abstract:
Calcium signaling pathways play pivotal roles in regulation of various important biological processes in eukaryotes ranging from yeast to human. Because of the high degree in gene conservation from yeast to human, the small molecule inhibitors discovered in the yeast based-drug screening system can be expected to exert their function in human as well. The immunosuppressive agents, FK506 and cyclosporine A, are an example. Our previous studies using a zds1 yeast-based assay to search for inhibitors in the calcium signaling pathway in Saccharomyces cerevisae mutant strain from the crude extract
APA, Harvard, Vancouver, ISO, and other styles
6

Delegard, C. H. Determination of the solubility of Np(IV), Pu(III) - (VI),Am(III) - (VI), and Te(IV), (V) hydroxo compounds in 0.5 - 14 M NaOH solutions. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/331672.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Adam, Alexandre, Saadane Rezaiguia, Romain Severac, and Michel Bouquey. Incorporation of aminoalcohols to tune the properties of polyurethane systems. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ps.1.

Full text
Abstract:
It is common practice to incorporate low molecular weight molecules, known as chain extenders, to enhance the performance of polyurethane (PU) material. They usually increase the phase separation between the soft and hard domains, which has a significant impact on the density of hydrogen bonds. Aminoalcohols, molecules with both hydroxyl and amine functional groups, are important building blocks in the synthesis of pharmaceuticals but are also widely used in cosmetics or paints and coatings. Easily derived from abundant natural sources, such as amino acids, aminoalcohols align with the need fo
APA, Harvard, Vancouver, ISO, and other styles
8

Gates, Emily, and Steven Waters. PR186-23110-R01 Create Matrix of Appropriate Sealing Materials and Designs in H2 and H2 Blend. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000124.

Full text
Abstract:
This study investigates the compatibility of sealing materials used in pipeline infrastructure with hydrogen gas, methane gas, and a hydrogen-methane blend. As the energy industry shifts to-wards hydrogen as a decarbonized fuel source, evaluating the performance of existing pipeline materials is crucial for the safe and efficient transportation of hydrogen, particularly in the case of repurposing existing natural gas lines to transport hydrogen or hydrogen-containing blends. The research consists of three parts: 1) the compilation of an inventory of nonmetallic materials commonly found in pipe
APA, Harvard, Vancouver, ISO, and other styles
9

Siripatrawan, Ubonratana. Active Chitosan-Based Film with Antimicrobial Property for Food Packaging Application. Chulalongkorn University, 2010. https://doi.org/10.58837/chula.res.2010.22.

Full text
Abstract:
This research was aimed to develop an active film from chitosan film incorporated with green tea extract to enhance antioxidant and antimicrobial properties in order to be used for food shelf life extension. The experiments were divided into 3 parts. Firstly, chitosan-based film preparation and modification were determined. The results suggested that the optimum chitosan films could be prepared from 2% chitosan in 1% acetic acid. However, the chitosan film was brittle and had low flexibility. Mechanical property of chitosan film was modified by adding different concentrations of glycerol, as a
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!