Relevant bibliographies by topics / Different organic precursors

Contents

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

Academic literature on the topic 'Different organic precursors'

Author: Grafiati
Published: 11 December 2022
Last updated: 19 July 2025

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Journal articles on the topic "Different organic precursors"

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Li, Zelin, Bin Zhou, Tingting Zheng, et al. "Integrating Metabolomics and Proteomics Technologies Provides Insights into the Flavor Precursor Changes at Different Maturity Stages of Arabica Coffee Cherries." Foods 12, no. 7 (2023): 1432. http://dx.doi.org/10.3390/foods12071432.

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The metabolic modulation of major flavor precursors during coffee cherry ripening is critical for the characteristic coffee flavor formation. However, the formation mechanism of flavor precursors during coffee cherry ripening remains unknown. In the present study, a colorimeter was employed to distinguish different maturity stages of coffee cherry based on the coffee cherry skin colors, and proteomics and metabolomics profiles were integrated to comprehensively investigate the flavor precursor dynamics involved in Arabica coffee cherry ripening. The data obtained in the present study provide a
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Partridge, Andrew, Stewart Walker, and David Armitt. "Detection of Impurities in Organic Peroxide Explosives from Precursor Chemicals." Australian Journal of Chemistry 63, no. 1 (2010): 30. http://dx.doi.org/10.1071/ch09481.

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Previous analyses of organic peroxide explosives have focussed on identification of the explosive itself, and were performed using explosive samples synthesized from laboratory-grade precursors. In this work, analytical studies of precursors obtained from retail outlets identified compounds that could be carried over into the explosives as impurities during synthesis. Forensic and intelligence information may be gained by the identification of possible precursor impurities in explosive samples. This hypothesis was tested using triacetone triperoxide and hexamethylene triperoxide diamine prepar
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Gatou, Maria-Anna, Nefeli Lagopati, Ioanna-Aglaia Vagena, Maria Gazouli, and Evangelia A. Pavlatou. "ZnO Nanoparticles from Different Precursors and Their Photocatalytic Potential for Biomedical Use." Nanomaterials 13, no. 1 (2022): 122. http://dx.doi.org/10.3390/nano13010122.

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Semiconductor photocatalysts, particularly ZnO nanoparticles, were synthesized via the precipitation method using four different precursors (zinc acetate/zinc nitrate/zinc sulfate/zinc chloride) and compared, according to their optical, structural, photocatalytic, and anticancer properties. The materials were characterized via X-ray Diffraction method (XRD), micro-Raman, Fourier Transform Infrared Spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), Dynamic Light Scattering (DLS), and Field Emission Scanning Electron Microscope (FESEM) analysis. Photocatalysis was conducted under UV and visible
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Molnar, Jelena, Jasmina Agbaba, Bozo Dalmacija, Mile Klasnja, Malcolm Watson, and Marijana Kragulj. "The influence of different matrices on the nature and content of haloacetic acids precursors in ozonized water." Chemical Industry 66, no. 2 (2012): 253–61. http://dx.doi.org/10.2298/hemind110902080m.

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This paper investigates the influence of different matrices (groundwater a realistic natural matrix and commercial humic acid solution a synthetic matrix) on the nature and content of haloacetic acid (HAA) precursors in ozonized water (0.4 to 3.0 mg O3/mg DOC; pH 6). Natural organic matter (NOM) characterization of the natural matrix showed it was largely of hydrophobic character (65% fulvic and 14% humic acids), with the hydrophilic fractions HPIA and HPI-NA at 12% and 9%, respectively. At approximately the same dissolved organic carbon (DOC) content of the investigated matrices (~10 mg /L),
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Lannuque, Victor, Marie Camredon, Florian Couvidat, et al. "Exploration of the influence of environmental conditions on secondary organic aerosol formation and organic species properties using explicit simulations: development of the VBS-GECKO parameterization." Atmospheric Chemistry and Physics 18, no. 18 (2018): 13411–28. http://dx.doi.org/10.5194/acp-18-13411-2018.

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Abstract. Atmospheric chambers have been widely used to study secondary organic aerosol (SOA) properties and formation from various precursors under different controlled environmental conditions and to develop parameterization to represent SOA formation in chemical transport models (CTMs). Chamber experiments are however limited in number, performed under conditions that differ from the atmosphere and can be subject to potential artefacts from chamber walls. Here, the Generator for Explicit Chemistry and Kinetics of Organics in the Atmosphere (GECKO-A) modelling tool has been used in a box mod
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Chhabra, P. S., N. L. Ng, M. R. Canagaratna, et al. "Elemental composition and oxidation of chamber organic aerosol." Atmospheric Chemistry and Physics 11, no. 17 (2011): 8827–45. http://dx.doi.org/10.5194/acp-11-8827-2011.

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Abstract. Recently, graphical representations of aerosol mass spectrometer (AMS) spectra and elemental composition have been developed to explain the oxidative and aging processes of secondary organic aerosol (SOA). It has been shown previously that oxygenated organic aerosol (OOA) components from ambient and laboratory data fall within a triangular region in the f44 vs. f43 space, where f44 and f43 are the ratios of the organic signal at m/z 44 and 43 to the total organic signal in AMS spectra, respectively; we refer to this graphical representation as the "triangle plot." Alternatively, the
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Muriqi, Arbresha, and Michael Nolan. "First Principles Modelling of Growth of Hybrid Organic-Inorganic Films." ECS Meeting Abstracts MA2023-02, no. 5 (2023): 853. http://dx.doi.org/10.1149/ma2023-025853mtgabs.

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Hybrid organic-inorganic materials fabricated with molecular layer deposition (MLD) are a special class of materials that are attracting great interest in many economically and socially relevant technological applications due to their diphasic and tunable organic-inorganic structure. Despite the growing interest in these hybrid materials, knowledge around relevant precursor chemistries and reaction mechanisms, as well as details of many determined experimental results are unknown. Density functional theory (DFT) has proven to be a powerful tool to investigate and understand the atomic level de
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Pang, Qian, Guang Hu, Kun Jiao, et al. "Characteristics of organic pores and composition of bio-precursors in the Wufeng and Longmaxi Formation shales, Southern Sichuan Basin, China." Energy Exploration & Exploitation 36, no. 4 (2018): 645–64. http://dx.doi.org/10.1177/0144598717753166.

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Bio-precursors of organic matter, referring to formerly living precursors, can influence content and distribution of organic pores significantly. However, insufficient attention has been paid in previous studies. To research the impact of bio-precursors of organic matter on shale organic pores, we conducted palynology and thin section analysis, total organic carbon analysis, and N2 gas absorption experiments on the Wufeng and Longmaxi Formations shales and kerogen samples from the Shuanghe outcrop section in southern Sichuan Basin, China. Generally, there are three bio-precursor assemblages be
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Stefenelli, Giulia, Jianhui Jiang, Amelie Bertrand, et al. "Secondary organic aerosol formation from smoldering and flaming combustion of biomass: a box model parametrization based on volatility basis set." Atmospheric Chemistry and Physics 19, no. 17 (2019): 11461–84. http://dx.doi.org/10.5194/acp-19-11461-2019.

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Abstract. Residential wood combustion remains one of the most important sources of primary organic aerosols (POA) and secondary organic aerosol (SOA) precursors during winter. The overwhelming majority of these precursors have not been traditionally considered in regional models, and only recently were lignin pyrolysis products and polycyclic aromatics identified as the principal SOA precursors from flaming wood combustion. The SOA yields of these components in the complex matrix of biomass smoke remain unknown and may not be inferred from smog chamber data based on single-compound systems. He
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Chang, H. H., and G. S. Wang. "Correlations between surrogate nitrogenous organic precursors and C-, N-DBP formation." Water Science and Technology 64, no. 12 (2011): 2395–403. http://dx.doi.org/10.2166/wst.2011.823.

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Nitrosamines have been emerging as disinfection byproducts in drinking water using source water impacted with domestic wastewaters. Nitrogenous organic compounds are suggested as precursors of nitrosamines, but many of them have not been identified. This study investigated the correlations between nine selected nitrogenous organic compounds with different characteristics and corresponding disinfection by-product formation potentials (nitrosamines, trihalomethanes (THMs), and haloacetic acids (HAAs)) from their reactions with free chlorine, chlorine dioxide and monochloramine. Besides dimethyla
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Dissertations / Theses on the topic "Different organic precursors"

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White, Dawn Elaine. "The use of stable isotopes for the characterisation of natural organic matter and investigation of the different organic precursors of aquatic systems." Thesis, Curtin University, 2013. http://hdl.handle.net/20.500.11937/1947.

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This study assesses the potential of compound specific stable carbon isotope analysis (CSIA) to complement traditional molecular analysis and to improve the overall characterisation of Natural Organic Matter (NOM) in drinking water systems. CSIA for characterising NOM fractions and for following their fate from catchment to tap is examined here on a range of samples, including contrasting surface reservoir NOM, biofoulants from water treatment filtration membranes and biofilms from distribution systems.
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Luk, Hoi Ling. "Computational and Experimental Studies of Excited States of Different Precursors of Carbenes and Nitrenes." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1342808166.

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Book chapters on the topic "Different organic precursors"

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Sanpo, Noppakun. "Influence of the Different Organic Chelating Agents on the Topography, Physical Properties and Phase of SPPS-Deposited Spinel Ferrite Splats." In Solution Precursor Plasma Spray System. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07025-4_4.

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"Comparison of Different Biocatalytic Routes to Target Molecules." In Biocatalysis in Organic Synthesis: The Retrosynthesis Approach. The Royal Society of Chemistry, 2018. http://dx.doi.org/10.1039/bk9781782625308-00351.

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Chapter 11 provides a comparison of different biocatalytic routes to target molecules, including both pharmaceuticals and agrochemicals. The reader is taken through a series of well-known targets where multiple different biocatalytic routes have been developed and in some cases scaled-up for commercial application. The aim of this chapter is to begin to gain some insight into the ways in which target molecules can be disconnected back to simpler precursors, which can then be transformed using biocatalysis.
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Taber, Douglass F. "Synthesis of C-N Natural Products: (-)-α-Kainic Acid (Helmchen), (+)-Tylophorine (Opatz), (-)-Lycoperine A (Rychnovsky), Fluvirucidine A2 (Suh), Complanidine A (Sarpong)." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0058.

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Günter Helmchen of the Ruprecht-Karls-Universität Heidelberg set (Organic Lett. 2010, 12, 1108) the absolute configuration of 3 by Ir*-mediated coupling of 1 with 2. Diastereoselective Pauson-Khand cyclization then led to (-)-α-kainic acid 5. Till Opatz, now at the Johannes Gutenberg-Universität Mainz, showed (Organic Lett. 2010, 12, 2140) that the product from the Dibal reduction of 6 could be condensed with the amine 7 without epimerization. Kim cyclization then directly delivered the pentacyclic alkaloid (+)-tylophorine 9. The interesting dimeric alkaloid lycoperine A 13 was recently isolated from the Japanese club moss Lycopodium hamiltonii. Scott D. Rychnovsky of the University of California, Irvine, prepared (Organic Lett. 2010, 12, 72) 12 by double alkylation of the bis-nitrile 11 with the enantiomerically pure allylic bromide 10. Although the projected reductive decyanation of 12 failed, hydrolysis followed by diastereoselective reductive amination successfully gave 13. Retrosynthetic analysis of fluvirucinine A2 16 could lead to an acyclic amino acid, which could be cyclized to the macrolactam. Young-Ger Suh of Seoul National University took (Organic Lett. 2010, 12, 2040) a different approach, building up the 14-membered ring system by two four-carbon ring expansions, beginning with an enantiomerically pure piperidine precursor. The second of these enolate-based aza-Claisen ring expansions is illustrated in the conversion of 14 to 15. Richmond Sarpong of the University of California, Berkeley, faced (J. Am. Chem. Soc. 2010, 132, 5926) a different sort of challenge in the synthesis of the dimeric Lycopodium alkaloid complanadine A 19. Even with established access to monomers such as 17 and its precursors, it was not clear how the 5-position of the pyridine ring could be selectively activated for bond formation. The solution to this dilemma was found in the work of Hartwig. Following that precedent, Ir-catalyzed activation of 17 converted it cleanly into the borinate 18, which could then be coupled with a pyridone triflate to complete the synthesis of 19.
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Taber, Douglass F. "Advances in Alkene Metathesis: The Hoveyda Synthesis of (+)-Quebrachamine." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0030.

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There are two major impediments to scaling up alkene metathesis: reducing the amount of the expensive Ru catalyst required, and minimizing residual Ru in the product. Robert H. Grubbs of Caltech developed (Organic Lett. 2009, 11, 1261) a family of silica-supported Ru complexes, exemplified by 1. At 0.75 mol % of 1, the rate of cyclization of 2 to 3 was maintained over eight cycles. The solution of product 3 showed < 5 ppb Ru. Hassan S. Bazzi and David E. Bergbreiter of the Texas A&M campuses in Qatar and College Station also reported (Organic Lett. 2009, 11, 665) a durable polymer-bound Ru metathesis catalyst that maintained its activity over many cycles. Most metathesis catalysts are strongly E selective. Amir H. Hoveyda of Boston College designed (J. Am. Chem. Soc. 2009, 131, 3844) a chiral Mo catalyst that was both highly enantioselective and strongly Z selective, converting the prochiral 4 into the alkene 6. Professor Hoveyda also took advantage (J. Am. Chem. Soc. 2009, 131, 8378) of the known propensity of Ru metathesis catalysts for H bonding, showing that metathesis of the prochiral cyclopropene 7 proceeded with remarkable diastereocontrol. This appears to be a generally useful protocol for assembling enantiomerically pure alkylated quaternary stereogenic centers. It is also possible to encapsulate the Ru catalyst. Ned B. Bowden of the University of Iowa pioneered the use of PDMS thimbles for this purpose. He has now shown (Organic Lett. 2009, 11, 33) that by subsequently adding AD-mix, cross-metathesis can be followed directly by enantioselective dihydroxylation. Ring-opening cross-metathesis of an unsymmetrical alkene such as 13 could give two different products. Alberto Avenoza and Jesús H. Busto of the Universidad de La Rioja established (J. Org. Chem. 2009, 74, 1736) that by tuning the electronic nature of the participating alkene, either product can be obtained with high selectivity. Metathesis can be used to close larger rings. Conformational effects are important. Motoo Tori of Tokushima Bunri University observed (Tetrahedron Lett. 2009, 50, 2225) that although 18 cyclized efficiently, the other three precursors that were diastereomeric on the cyclopentane ring did not undergo ring-closing metathesis.
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Calvert, J. G., R. Atkinson, J. A. Kerr, et al. "Importance of Alkenes in the Chemistry of Ozone Generation in the Urban Atmosphere." In The Mechanisms Of Atmospheric Oxidation Of The Alkenes. Oxford University PressNew York, NY, 2000. http://dx.doi.org/10.1093/oso/9780195131772.003.0001.

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Abstract Organic compounds are important trace constituents of the atmosphere that originate from many different natural and man-made sources. The atmospheric reactions of organic compounds influence other atmospheric trace constituents. In particular, reactions of volatile organic compounds (VOCs) with nitrogen oxides (NOx) in the presence of sunlight can lead to the formation of ozone and other oxidants, commonly referred to as “smog” or “ground-level ozone” (see, e.g., Warneck, 1988; Finlayson-Pitts and Pitts, 1986). In many urban areas, emissions of VOCs and NOx, when combined under meteorological conditions that favor smog formation, can lead to the formation of ground-level ozone at harmful levels. In some cases, such as the eastern United States, ground-level ozone is a “regional-scale” as well as an “‘urban-scale” problem because significant atmospheric transport of ozone (and/or ozone precursors) occurs from urban to rural areas, or between neighboring urban areas.
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Shaikh, Zuber Peermohammed. "Synthesis of Sulfur and Sulfoxides Organic Compounds Through Rearrangement Reaction." In Principles, Applications, and Advances of Organic Reaction Mechanisms. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-6473-4.ch006.

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Sulfur imidations can be addressed by several synthetic approaches, depending on nature of the starting sulfide or sulfoxide. A wide range of imidating agents has been developed including N-haloamides and related reagents, azides, heterocyclic nitrene precursors, and iodinanes. All are characterised by their specific properties and reactivities. Most of the imidation procedures have been developed for sulfide imidation, while only a few are efficient for sulfoxide conversions. This is particularly true for metal-free variants of imidation reactions. Importantly, the nature of nitrogen-protecting group. This chapter demonstrates synthesis of sulfonamide using amines and thiol through different oxidative and non-oxidative rearrangement reactions. The significance of sulfoxides as commodity chemicals, their efficacy as versatile building blocks for the assembly of chemically and biologically useful molecules, including therapeutic agents, is increasing enantiopure-sulfoxides, owing to their important biological activities are highly useful in pharmaceutical industry.
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Das, A., and B. K. Sarmah. "15.3.6 Quinoline 1-Oxides and Quinolinium Salts (Update 2025)." In Knowledge Updates 2025/1. Georg Thieme Verlag KG, 2025. https://doi.org/10.1055/sos-sd-115-01884.

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AbstractQuinoline 1-oxides and quinolinium salts are used extensively as synthetic intermediates for various organic transformations. They are also found as privileged cores in various bioactive molecules. Therefore, there has been a continuous effort focused on the synthesis of such compounds. In this review, recent synthetic protocols to afford such compounds are compiled, with literature reports from 2005 to 2023 included. In addition to the most common oxidation routes from the parent quinoline moiety, including biocatalytic methods, this contribution also features synthetic routes using different starting materials, often based on nitroarene precursors. Synthetic protocols for the preparation of quinolinium salts based on addition or annulation strategies are also covered.
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Figueira, Rita Bacelar. "Hybrid Sol-Gel Coatings." In Production, Properties, and Applications of High Temperature Coatings. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-4194-3.ch013.

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The properties and wide application range of organic-inorganic hybrid (O-IH) sol-gel materials have attracted significant attention over the past decades. The combination of organic polymers and inorganic materials in a single-phase provides exceptional possibilities to tailor electrical, optical and mechanical properties concerning diverse applications. This unlimited design concept has led to the development of diverse coatings for several applications such as glasses, and metals to mitigate mechanical abrasion, erosion and corrosion. This class of materials could be easily obtained by sol-gel method at mild synthesis conditions. Furthermore, the large variety of available chemical precursors allows producing a diversity of coatings with tuned mechanical and thermal properties. This chapter will introduce the fundamentals of the sol-gel method to produce O-IH protective thin coatings and discuss the methodologies used to apply these materials onto different metallic substrates for erosion and corrosion protection.
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Abazari, Reza, Soheila Sanati, and Junkuo Gao. "Metal-organic Frameworks and their Derived Structures for Photocatalytic Water Splitting." In Advanced Catalysts Based on Metal-organic Frameworks (Part 2). BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136029123010003.

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Fossil fuels are non-renewable energy sources and may cause environmental pollution. One of the appropriate solutions is to develop clean and renewable sources of energy as an alternative to fossil fuels. Environmental pollution and lack of renewable energy sources are two significant problems affecting the current life of human society and economic progress. Researchers have addressed semiconductor-oriented heterogeneous photo-electrocatalysis, photocatalysis, and electrocatalysis by the fuel cells to solve these crises. Photocatalytic water splitting is a promising approach in resolving the energy crisis. This process involves harvesting solar light, charge transfer and separation, and evaluation of catalytic reactions of H2 and O2. In this regard, the main challenge is to find an efficient, environmental-friendly, cost-effective, and easily fabricated photocatalyst with high stability and corrosion resistance in different media. Thanks to their tunable structure, structural flexibility, high specific surface area, tunable pores, and unsaturated metal sites, metal-organic frameworks (MOFs) could be an efficient photocatalyst for hydrogen production under UV, NIR, and visible radiation. Therefore, MOFs and MOFs-based compounds are widely utilized as alternatives for expensive commercial catalysts developed based on rare elements such as Pt and Au. They can also be employed as precursors for the synthesis of different types of materials with different structures, sizes, and morphologies. This chapter summarizes MOF-based photocatalysts for the splitting of water are MOFs modification strategies.
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Ali, W., S. Guin, and D. Maiti. "10 Alkene/Alkane Cross-Dehydrogenative Coupling for C(sp2)—C(sp3) Bond Formation." In Cross-Dehydrogenative Coupling. Georg Thieme Verlag KG, 2023. http://dx.doi.org/10.1055/sos-sd-240-00131.

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AbstractIn the area of C—H functionalization, cross-dehydrogenative coupling (CDC) represents the most atom-efficient coupling reaction, since it obviates the need for substrate prefunctionalization. The CDC strategy enables the construction of C—C bonds of diverse hybridization directly from C—H bonds present in the precursors, with formal loss of dihydrogen. C(sp2)—C(sp3) bond formation via selective C(sp3)—H/C(sp2)-H cross coupling is generally difficult to achieve owing to the inertness of C(sp3)-H bonds and their ubiquity in organic molecules. This review describes the different strategies developed over the years in overcoming the aforesaid challenges to enable C(sp2)—C(sp3) bond formation by CDC. Utilization of directing-group-assisted C(sp3)—H metalation with the aid of ligands has largely been the key for selective alkenylation at both proximal and distal positions. Non-directed protocols have also been developed that proceed by selective radical formation using a metal/oxidant combination, or just an oxidant. The developments made in terms of ligand design, scope, mechanistic aspects, and the potential applications of the different methodologies for the CDC between C(sp3)—H and C(sp2)—H bonds are portrayed in this chapter.
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Conference papers on the topic "Different organic precursors"

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Soucek, Mark D. "BPA Epoxide Inorganic/Organic Coatings with NanoCarbon Additives." In SSPC 2015 Greencoat. SSPC, 2015. https://doi.org/10.5006/s2015-00059.

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Throughout the last decades, coatings science has incorporated very versatile inorganic materials into organic coating to form the inorganic/organic hybrid coating systems. [1] Combining various organic and inorganic constituents in combination with different preparation and processing methods, very versatile materials can be produced for optical, structural and coatings applications. The hybrid products have combined the properties of the inorganic materials, i.e. hardness, durability, and thermal stability, and organic polymers, i.e. flexibility and toughness. Our group has studied polyurea
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He, Jie, Jared Risan, Bret Chisholm, and Zhigang Chen. "Development of a Reactive-Diluent-Based Dual-Cured Hybrid Organic/Inorganic Coating for Aircraft Corrosion Protection." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10045.

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Abstract In this work, a reactive-diluent-based hybrid organic/inorganic coating was developed for aircraft corrosion protection. Since this precursor of the coating contains two forms of functional groups (acrylate functionality and trimethoxysilane functionality), two different crosslinked networks can be produced. A polyacrylate network can be produced using a radiation-cure mechanism while a polysiloxane network can be produced by the following sol-gel reaction. Of six forms of acrylate with different number of functionalities, two are selected as reactive diluents for the novel precursor
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Vogel, Marina, Andreas Krödel, and Alexander Schulze. "Different Ways to Lardolure Precursors: Application of Enzymatic Methods." In The 4th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2000. http://dx.doi.org/10.3390/ecsoc-4-01918.

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Garcia, E., Z. B. Zhang, T. W. Coyle, L. Gan, and R. Pilliar. "Plasma Spraying of Hydroxyapatite Coatings Obtained from Two different Precursors." In ITSC2006, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p0017.

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Abstract In this work the suitability of two different liquid precursors of hydroxyapatite (HA) as feedstock for the air plasma spray (APS) coating technique was studied and compared. The precursors were organic (calcium nitrate tetrahydrate and triethyl phosphate) and inorganic (calcium nitrate tetrahydrate and ammonium dihydrogen phosphate) sol-gel solution precursors employed in a previous work to produce thin films by a dipping technique. We report on the formation of porous hydroxyapatite coatings on Ti6Al4V substrates. The microstructures found in of both types of coatings are characteri
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Wahl, G., W. Nemetz, M. Giannozzi, et al. "Chemical Vapour Deposition of TBC: An Alternative Process for Gas Turbine Components." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0077.

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This paper deals with a development of a new process for the deposition of Thermal Barrier Coatings (TBC) based on Chemical Vapour Deposition (CVD). The research program started in September 1998 under a BRITE/Euram III project. The CVD process involves the evaporation of zirconium and yttrium starting from metal-organic precursors and their reaction with oxygen in a hot wall reactor in order to deposit TBC layers. The influence of different deposition parameters such as evaporation temperature, pressure and substrate temperature on structure, deposition rate and process yield are described. T
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Rohkamp, Marius, Alexander Rabl, Benedikt Gündling, et al. "Detailed Gaseous and Particulate Emissions of an Allison 250-C20B Turboshaft Engine." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-101273.

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Abstract Aviation is known to be one of the most significant contributors to air pollutants. This includes gaseous emissions, like carbon-dioxide (CO2) and nitrogen oxides (NOx), and also particulate matter (PM), especially in the form of soot. This study conducted emission measurements on an Allison 250-C20B turboshaft engine operating on Jet A-1 fuel with a focus on gaseous compounds (e.g. ozone precursors) and PM, regarding their number and mass concentration. The different engine loading points were chosen based on the percentage thrust ratios of the International Civil Aviation Organizati
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Nassirzadehsaleh, Amirhossein, and Ahmet Aykaç. "A Comparative Study on Production of Graphene Quantum Dots from Coffee Beans and Tea Leaves Extract." In 8th International Students Science Congress. ULUSLARARASI ÖĞRENCİ DERNEKLERİ FEDERASYONU (UDEF), 2024. https://doi.org/10.52460/issc.2024.053.

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In recent years, the importance of nanoparticle synthesis and application has increased, and as a result, more research has been conducted on nanoscience and nanotechnology. In particular, research on the production of environmentally friendly, less wasteful, low-cost, and multifunctional nanomaterials has increased dramatically. Some studies have been conducted on natural organic waste materials such as coconut husk, nutmeg seed, mint leaves, coffee beans, and tea leaves for producing nanostructures. Using organic waste materials as a source of nanostructures helps us save on disposal costs a
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Pancotti, Federica, Mafalda Guerra, Maxime Fournier, et al. "Investigation, Development and Assessment of Innovative Direct Conditioning Solutions for Radioactive Liquid Organic Waste Within the PREDIS Project." In ASME 2023 International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/icem2023-110253.

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Abstract In the framework of the Horizon-2020 PRE-DISposal management of radioactive waste (PREDIS) project, research activities are on-going to address the key issue of Radioactive Liquid Organic Waste (RLOW), which consists in the lack of reliable disposal or treatment routes, by investigating, developing and assessing direct conditioning solutions based on geopolymers and alkali-activated materials as conditioning matrices. Such solutions have to lead to final waste forms exhibiting properties and performances compatible with safety and technical requirements related to disposal, as well as
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9

Alrabaei, Rayan, Akram Albarghouti, Abdulelah Balto, and Mohammed Alkhaldi. "Zero-Flaring Mudcake Removal: New Techniques for Efficient Natural Cleanup of Horizontal/Multilateral Open-Hole Wells." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21297-ms.

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Abstract Effective mudcake removal is essential to restore the optimal well productivity/injectivity after different drilling operations. Typically, this objective is achieved by using harsh chemical treatments such as hydrochloric acid (HCl), organic acids and oxidizers. However, these methods have been limited due to associated high corrosion rates, high operation cost, and un-even mudcake removal. This task becomes even more difficult and very challenging in horizontal/multilateral wells. Organic acids and acid precursors have been also used to clean long horizontal wells following drilling
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10

Eckhoff, W. C., L. Yuan, C. Billera, R. F. Curl, and C. E. Miller. "Infrared Spectroscopy using Difference Frequency Generation in AgGaS2: Propargyl Radical." In Modern Spectroscopy of Solids, Liquids, and Gases. Optica Publishing Group, 1995. http://dx.doi.org/10.1364/msslg.1995.ssaa2.

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The propargyl radical (HCCCH2) is of interest as a possible precursor in benzene and soot formation in flames and as one of the simplest conjugated organic free radicals. Because of its importance, several spectroscopic investigations of this species have recently been carried out.1-4 In order to learn more about its structure and potential surface, we have begun an investigation of the high resolution infrared spectra of the partially deuterated form, DCCCH2 in the region of the CD stretching fundamental. In this work an infrared kinetic spectroscopy apparatus5 based on difference frequency g
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Reports on the topic "Different organic precursors"

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Wongkasemjit, Sujitra. Treatment of dye containing in textile wastewater using TS-1, Ti-MCM-41 and Bismuth Titanate Catalysts : final report. Chulalongkorn University, 2007. https://doi.org/10.58837/chula.res.2007.94.

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This research was to study the photocatalytic activity of three different metal oxide catalysts, namely MCM-41, TS-1, and bismuth titanate (Bi[subscript 12]TiO[subscript 20]) in the reactive black 5 dye solution and the waste water obtained from a dye industry. These catalysts were synthesized using silatrane, titanium glycolate and bismuth nitrate precursors. The degradation process was first studied in the reactive black 5 dye model. The parameters in this study were pH, amounts of H[subscript 2]O[subscript 2] and Ti-loading in zeolite structure while fixing the organic dye at 40 ppm. At pH3
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