Log in

Relevant bibliographies by topics / Aromatic species

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Aromatic species'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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 'Aromatic species.'

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 "Aromatic species"

1

Wu, Yan-Bo, Jin-Liang Jiang, Hai-Gang Lu, Zhi-Xiang Wang, Nancy Perez-Peralta, Rafael Islas, Maryel Contreras, Gabriel Merino, Judy I.-Chia Wu, and Paul von Ragué Schleyer. "Starlike Aluminum-Carbon Aromatic Species." Chemistry - A European Journal 17, no. 2 (December 16, 2010): 714–19. http://dx.doi.org/10.1002/chem.201001266.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Martin, J. C., S. K. Chopra, C. D. Moon, and T. R. Forbus. "Hypervalent Phosphorus Species as Aromatic and Metallic Species." Phosphorus, Sulfur, and Silicon and the Related Elements 76, no. 1-4 (March 1993): 87–90. http://dx.doi.org/10.1080/10426509308032365.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Wijesinghe, C. J., and B. Khandelwal. "Impact of aromatic species selection and micro and bulk properties of alternative fuels on atomisation." Aeronautical Journal 125, no. 1288 (March 5, 2021): 1013–33. http://dx.doi.org/10.1017/aer.2021.6.

Full text

Abstract:

AbstractThe importance of fuel injection methods and their atomisation characteristics has been well described in literature. Also, there are a large number of studies in literature detailing the impact of bulk properties of conventional fuels on atomisation and spray characteristics. However, there is a lack of knowledge on how different alternative fuels, and specifically aromatic species, impact spray and atomisation characteristics. In this investigation, the impact of alternative fuels, selected aromatic species and their properties on spray atomisation was studied. Details of how different aromatic structures, bonds and other micro properties of aromatics species impact spray and atomisation characteristics were investigated. To achieve this objective, testing was conducted using a Rolls-Royce Tay engine fuel injector. It was found that the droplet sizes in the form of the Sauter Mean Diameter (SMD) correlate well with fuel properties including density, viscosity and surface tension, which is in line with other published literature. Moreover, it was found that there are several aromatic species (ethylbenzene, cumene and tert-butylbenzene) which display improved atomisation. This indicates that the size of the aliphatic groups attached to the benzene ring in the aromatic molecule impact on the drop size and thereby the combustion characteristics. The worst performers were polyaromatic naphthalene compounds. With the increasing push for fuels with selected aromatic species in the future, this study provides knowledge on the impact of their on the atomisation characteristics.

APA, Harvard, Vancouver, ISO, and other styles

4

West, Robert. "Novel aromatic species containing group 14 atoms." Pure and Applied Chemistry 80, no. 3 (January 1, 2008): 563–69. http://dx.doi.org/10.1351/pac200880030563.

Full text

Abstract:

The dianions of tetraphenylsilole and tetraphenylgermole behave as aromatic species, as shown by the equalization of C-C bond lengths in these rings and by nucleus-independent chemical shift (NICS) calculations. Similarly, the dianions of 9-silafluorene and 9-germafluorene are aromatic. In the latter species, the heteroatom five-membered rings are more aromatic than the attached benzene rings. Also to be recognized as aromatically stabilized compounds are the stable unsaturated diiminocarbenes, diiminosilylenes, and diiminogermylenes. Evidence for the aromatic delocalization in these molecules comes from NMR, NICS calculations, Raman spectroscopy, isodesmic molecular orbital (MO) calculations, and calculated isomerization stabilization energies. From the presently available evidence, the aromaticity appears to alternate, with C > Ge > Si, going down group 14.

APA, Harvard, Vancouver, ISO, and other styles

5

Foght, J. M., and D. W. S. Westlake. "Degradation of polycyclic aromatic hydrocarbons and aromatic heterocycles by a Pseudomonas species." Canadian Journal of Microbiology 34, no. 10 (October 1, 1988): 1135–41. http://dx.doi.org/10.1139/m88-200.

Full text

Abstract:

Enrichment cultures were established with the aromatic fraction of a crude oil and screened for aromatic-degrading pseudomonads, using a sprayed plate technique. One isolate identified as Pseudomonas sp. HL7b was chosen for further study because it oxidized several polycyclic aromatic hydrocarbons and aromatic heterocycles without an apparent lag. Using capillary gas chromatography, spectrophotometry, and radiorespirometry, it was found to be capable of mineralizing and (or) oxidizing a wide range of polycyclic aromatic hydrocarbons, S-, N-, and O-heterocyclic analogues, and alkyl polycyclic aromatic hydrocarbons, but not aliphatic hydrocarbons. The isolate displayed two colonial morphologies which correlated with variation in degradative phenotype and hydrophobicity as measured by polystyrene adherence. Four cryptic plasmids were observed in both colonial types. Pseudomonas sp. HL7b degraded dibenzothiophene co-metabolically by a recognized pathway, but this degradation was constitutive, rather than inducible as reported for other bacteria.

APA, Harvard, Vancouver, ISO, and other styles

6

Fedik, Nikita, Alexander I. Boldyrev, and Alvaro Muñoz-Castro. "Aromatic character of [Au13]5+ and [MAu12]4+/6+ (M = Pd, Pt) cores in ligand protected gold nanoclusters – interplay between spherical and planar σ-aromatics." Physical Chemistry Chemical Physics 21, no. 45 (2019): 25215–19. http://dx.doi.org/10.1039/c9cp04477a.

Full text

Abstract:

Ligand-protected superatoms are able to behave as both spherical and planar aromatic species, providing a strong link between spherical and planar σ-aromatics, which can be controlled selectively by tuning their redox charge states.

APA, Harvard, Vancouver, ISO, and other styles

7

Cai, Yuanting, Yuhui Hua, Zhengyu Lu, Qing Lan, Zuzhang Lin, Jiawei Fei, Zhixin Chen, Hong Zhang, and Haiping Xia. "Electrophilic aromatic substitution reactions of compounds with Craig-Möbius aromaticity." Proceedings of the National Academy of Sciences 118, no. 39 (September 20, 2021): e2102310118. http://dx.doi.org/10.1073/pnas.2102310118.

Full text

Abstract:

Electrophilic aromatic substitution (EAS) reactions are widely regarded as characteristic reactions of aromatic species, but no comparable reaction has been reported for molecules with Craig-Möbius aromaticity. Here, we demonstrate successful EAS reactions of Craig-Möbius aromatics, osmapentalenes, and fused osmapentalenes. The highly reactive nature of osmapentalene makes it susceptible to electrophilic attack by halogens, thus osmapentalene, osmafuran-fused osmapentalene, and osmabenzene-fused osmapentalene can undergo typical EAS reactions. In addition, the selective formation of a series of halogen substituted metalla-aromatics via EAS reactions has revealed an unprecedented approach to otherwise elusive compounds such as the unsaturated cyclic chlorirenium ions. Density functional theory calculations were conducted to study the electronic effect on the regioselectivity of the EAS reactions.

APA, Harvard, Vancouver, ISO, and other styles

8

Sa'adah, Vina Savinatus, Ervizal A. M. Zuhud, and Siswoyo Siswoyo. "The Potential Utilization of Aromatic Plants in Kembang Kuning Resort, Gunung Rinjani National Park, West Nusa Tenggara." Media Konservasi 24, no. 1 (May 31, 2019): 1–10. http://dx.doi.org/10.29244/medkon.24.1.1-10.

Full text

Abstract:

Gunung Rinjani National Park (TNGR) is nature conservation area located in West Nusa Tenggara. Kembang Kuning Resort is one of the TNGR‘s resorts under Territory Management Section (SPW) II East Lombok which has high potential for biological diversity which one of them is aromatic plants. Aromatic plants are plants that produce essential oils. dentify the diversity of aromatic plant species, and ethnobotany aromatic plants in communities around the area. The methods used are the vegetation analysis, terpenoid phytochemicals test and interviews. The results of the vegetation analysis found 47 species from 28 families of aromatic plants including six widely known species and 41 potential species. The widely known species which are the species that used by the community, have economic value, and there have been many studies related to these species, while potential aromatic plants are plants that have been tested phytochemical and positively have terpenoids but have not had the market value and not widely known by the community. Aromatic plants are used as medicine for both external diseases and internal diseases, religious rituals and beliefs, pesticides, cooking spices, and fragrances. Keywords: aromatic, diversity, ethnobotany, plants, species

APA, Harvard, Vancouver, ISO, and other styles

9

Anuar, A., V. K. Undavalli, B. Khandelwal, and S. Blakey. "Effect of fuels, aromatics and preparation methods on seal swell." Aeronautical Journal 125, no. 1291 (April 12, 2021): 1542–65. http://dx.doi.org/10.1017/aer.2021.25.

Full text

Abstract:

AbstractNew alternative jet fuels have provided many advantages in the aviation industry, especially in terms of economics and environment. However, fuel–seal compatibility is one of the major issues that restricts alternative fuel advancement into the market. Thus, to help understand and solve the problem, this study examines the swelling effect of prepared and non-prepared O-rings in different fuels and aromatic species. Stress relaxation experiments were carried out to evaluate seal compatibility under compression, which mimics engine operation conditions. Seals were compressed and immersed in a variety of fuels and their blends for about 90h while maintaining a constant temperature 30°C and constant compression force of 25% seal thickness. The two types of elastomers investigated were fluorosilicone and nitrile O-rings, which are predominantly used in the aviation industry. Meanwhile, three different fuels and aromatic species were utilised as the variables in the experiments. The fuels used were Jet-A1, SPK and SHJFCS, while the aromatic species added were propyl benzene, tetralin and p-xylene. The swelling effects were determined from the P/Po value. Results indicate that Jet-A1 has the highest swelling effect, followed by SHJFCS and SPK. It was observed that the higher the percentage of aromatics in fuel, the higher the rate of swelling. Furthermore, prepared seals had a lower swelling rate than did non-prepared seals. Meanwhile, the intensity of the swelling effect in the Jet-A1-SHJFCS blends was in the order of 60/40, 85/15 and 50/50 blend. The work done in this study will aid in the selection of suitable aromatic species in future fuels. The novelty of this research lies in the determination of the appropriate amount of aromatic content as well as the selection of type of aromatic and its mixture fuel. Moreover, the various proportions of fuel blends with aromatic are investigated. The primary aim of this study is to understand the behaviour of prepared and non-prepared seals, and their compatibility with alternative fuels.

APA, Harvard, Vancouver, ISO, and other styles

10

Axelsson, Håkan, Anders Eilard, Annika Emanuelsson, Bo Galle, Hans Edner, Pär Ragnarson, and Henrik Kloo. "Measurement of Aromatic Hydrocarbons with the DOAS Technique." Applied Spectroscopy 49, no. 9 (September 1995): 1254–60. http://dx.doi.org/10.1366/0003702953965254.

Full text

Abstract:

Long-path DOAS (differential optical absorption spectroscopy) in the ultraviolet spectral region has been shown to be applicable for low-concentration measurements of light aromatic hydrocarbons. However, because of spectral interferences among different aromatics as well as with oxygen, ozone, and sulfur dioxide, the application of the DOAS technique for this group of components is not without problems. This project includes a study of the differential absorption characteristics, between 250 and 280 nm, of twelve light aromatic hydrocarbons representing major constituents in technical solvents used in the automobile industry. Spectral overlapping between the different species, including oxygen, ozone, and sulfur dioxide, has been investigated and related to the chemical structure of the different aromatics. Interference effects in the DOAS application due to spectral overlapping have been investigated both in quantitative and in qualitative terms, with data from a field campaign at a major automobile manufacturing plant.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Aromatic species"

1

Uchiyama, Nanase. "Generation of Aromatic Radical Species and Its Application to Organic Synthesis." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/175133.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Turner, Joseph B. McGee. "Determination and analysis of multi photon excitation e missive species." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5822.

Full text

Abstract:

Thesis (Ph. D.)--University of Missouri-Columbia, 2005.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (May 23, 2006) Vita. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

3

Hayes, Carrigan Jo. "Computational studies of combustion processes and oxygenated species." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1186708015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Pacheco, Bustos Alex Gustavo. "Allelochemical effects of aromatic species intercropped with coffee (Coffea arabica L.) in Puebla, Mexico." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=984679995.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Pritchard, Ian. "Potential inter-relationships between the dissimilatory pathways of steroids and aromatic compounds in Pseudomonas species." Thesis, Liverpool John Moores University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337861.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Heck, Marcela Georgia [Verfasser], and Kenneth Nigel [Akademischer Betreuer] Timmis. "Functional biodiversity of Pseudomonas species in biofilm communities degrading polycyclic aromatic hydrocarbons / Marcela Georgia Heck ; Betreuer: Kenneth Nigel Timmis." Braunschweig : Technische Universität Braunschweig, 2011. http://d-nb.info/1175826103/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Gentili, Matilde. "Effect of nitrogen nutrition on yeast ecology and alcoholic fermentation." Master's thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/12216.

Full text

Abstract:

Mestrado Vinifera Euromaster - Instituto Superior de Agronomia - UL
Wine is an alcoholic beverage obtained from the fermentation of grape juice. Alcoholic fermentation is the main process to obtain the final product but of course other reactions take place during the transformation of grape juice into wine. Yeasts are one of the fundamental microorganisms to realize the alcoholic fermentation, that leads sugars to be transformed in ethanol and to development of other compounds. Yeasts as known are living organisms so they need nutrients for their reproduction and often the lack of some important nutrients can lead to a stuck or slug in their metabolic activity. One of the most important nutrient for yeasts growth is Nitrogen, main component of aminoacids and proteins, that constitute the basic structures of the microorganism.In winemaking, both in the cellar and in the vineyards, the addition of nitrogen under different circumstances is a common practice. Nitrogen seems to influence not only fermentation rate and yeast growth but many of the fermentation product such as ethanol, acetic acid, glycerol, and of course residual sugars and the production of some off flavours,such as hydrogen sulphide. Although each yeast, species and strains,showed different behaviour both in the fermentation rates, growth and production of different metabolites. Not only the quantity and kind of Nitrogen source but also the timing of the addition seem to influence all these aspects in slightly different way between different strain. The nitrogen compounds especially apparently ammino acids showed also a particular relationship with the production of esters of higher alcohols and other compounds but the pattern of ester production is still uncertain. In this study there will be considered the main aspects of nitrogen nutrition, how it affects the yeasts ecology and the different conditions on which it is used and also different strains and species requirements

APA, Harvard, Vancouver, ISO, and other styles

8

Bommarito, Thomas. "TOXICITY OF SEDIMENTS CONTAINING COAL-TAR PAVEMENT SEALANTS TO NOTOPHTHALMUS VIRIDESCENS AND AMBYSTOMA MACULATUM, SURROGATE SPECIES FOR EURYCEA SOSORUM." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1796420441&sid=6&Fmt=2&clientId=1509&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Henry, Heather Fort. "Natural Revegetation of an Aged Petroleum Landfarm Impacted With Polycyclic Aromatic Hydrocarbons (PAHs) and Heavy Metals (Cr, Pb, Zn, Ni, Cu): Ecological Restoration, Remediation, and Risk." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1100890826.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Silva, Givanildo Batista da. "Isolamento, caracterização, quantificação e avaliação da pureza enantiomérica de linalol, carvona e limoneno em óleos essenciais de espécies aromáticas." Universidade Federal de Sergipe, 2011. https://ri.ufs.br/handle/riufs/6165.

Full text

Abstract:

This study involved the isolation, characterization, quantification and evaluation of the enantiomeric purity of linalool in the essential oil of aromatic species Lippia alba (Mill.) NE Brown (chemotype linalol-1,8-cineole), Ocimum basilicum L., Pelargonium graveolens L'Herit, Cinnamomum camphora Nees and Eberm var. linaloolifera Fujita, Aniba rosaeodora Ducke and Coriandrum sativum L., and carvone and limonene in the essential of Lippia alba (chemotype carvone-limonene). The quantification of monoterpenes was performed by GC-FID method for the internal standard. The analytical curves for quantification were linear in the range 1.0 to 10.0 mg mL-1 and showed appropriate values of correlation coefficients (0.996 to 0.999). The linalool was found with 91.38% (w/w) in essential oil of A. rosaeodora, 84.00% in C. camphora, 79.25% in L. alba, 79.00% in C. sativum, 73.33% in O. basilicum and 13.60% in P. graveolens. The carvone showed 58.13% and limonene showed 31.71% (w/w) of essential oil of L. alba. The enantiomeric purity analysis performed by GC-FID, using a column with enantioselective phase (β-cyclodextrin) and co-injection with commercial patterns, revealed the presence of the enantiomer (S)-(+)-linalool in L. alba and (R)-(-)-linalool in O. basilicum and C. camphora. The two enantiomeric forms of linalool were found in the P. graveolens, A. rosaeodora and C. sativum species. In the L. alba species (chemotype carvone-limonene) was observed a single enantiomeric form (R)-(-)-carvone and limonene showed the enantiomeric forms (S)-(-)-limonene and (R)-(+)-limonene, with predominance of the latter. The linalool was isolated from the essential oil of L. alba by TLC and subjected to analysis of GC-MS, GC-FID, 1H and 13C NMR and [α]D, which elucidated its structure and stereochemistry. The (S)-(+)-linalool isolated from L. alba (> 99%) was used to obtain the analytical curve. This isolation was necessary due to unavailability of acquire the (S)-(+)-linalool commercially pure.
Este estudo envolveu isolamento, caracterização, quantificação e avaliação da pureza enantiomérica do linalol nos óleos essenciais das espécies aromáticas Lippia alba (Mill.) N. E. Brown (quimiotipo linalol-1,8-cineol), Ocimum basilicum L, Pelargonium graveolens L Herit, Cinnamomum camphora Nees e Eberm var. linaloolifera Fujita, Aniba rosaeodora Ducke e Coriandrum sativum L. e da carvona e do limoneno no óleo essencial de Lippia alba (Mill.) N. E. Brown (quimiotipo carvona-limoneno). A quantificação dos monoterpenos foi realizada por CG-DIC pelo método do padrão interno. As curvas analíticas para a quantificação foram lineares no intervalo de 1,0 a 10,0 mg mL-1 e apresentaram valores adequados de coeficientes de correlação (0,996 a 0,999). O linalol foi encontrado com 91,38% (m/m) no óleo essencial de A. rosaeodora, 84,00% em C. camphora, 79,25% em L. alba, 79,00% em C. sativum, 73,33% em O. basilicum e 13,60% em P. graveolens. A carvona apresentou 58,13% e o limoneno 31,71% (m/m) no óleo essencial de L. alba (quimiotipo carvona-limoneno). As análises de purezas enantioméricas realizadas por CG-DIC, utilizando uma coluna com fase enantiosseletiva (β-ciclodextrina) e a co-injeção com padrões comerciais, revelaram a presença do enantiômero (S)-(+)-linalol em L. alba e do (R)-(-)-linalol em O. basilicum e em C. camphora. As duas formas enantioméricas do linalol foram encontradas nas espécies P. graveolens, A. rosaeodora e C. sativum. Na espécie L. alba (quimiotipo carvona-limoneno) foi observada uma única forma enantiomérica (R)-(-)-carvona e o limoneno apresentou as formas enantioméricas (S)-(-)-limoneno e (R)-(+)-limoneno com predominância desta última. O linalol foi isolado do óleo essencial de L. alba por CCD e submetido à análise por CG-EM, CG-DIC, RMN de 1H e 13C e [α]D, as quais elucidaram sua estrutura e estereoquímica. O (S)-(+)-linalol isolado de L. alba (> 99%) foi utilizado na obtenção da curva analítica. Esse isolamento foi necessário devido à indisponibilidade em adquirir o (S)-(+)-linalol comercialmente puro.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Aromatic species"

1

Jensen, Brenda A. Characterization of an aryl hydrocarbon receptor from a cetacean: An approach for assessing contaminant susceptibility in protected species. Woods Hole, Mass: Woods Hole Oceanographic Institution, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Clauser, Marina, Andrea Grigioni, and Mario Landi, eds. Peperoncini. Florence: Firenze University Press, 2010. http://dx.doi.org/10.36253/978-88-8453-951-9.

Full text

Abstract:

The chili pepper is a spice and medicinal remedy used since ancient times by the American peoples who were the first to undertake the domestication of 5 species belonging to the genus Capsicum (Solanaceae): Capsicum (Solanaceae): Capsicum annuum, C. baccatum, C. chinense, C. frutescens e C. pubescens. After the sixteenth century the chili pepper became similarly popular in other continents and today the five species number many reference pod-types and over 3,000 varieties. The book describes their uses in the different spheres of cuisine (aromatic, spicy and colourful), medicine (antioxidant and digestive for internal use, rubefacient and anti-rheumatic for external use) and ornamentation (cut branches, floral compositions, border plants, splashes of colour).

APA, Harvard, Vancouver, ISO, and other styles

3

Mulliken, Teresa. Review of the status, harvest, trade, and management of seven Asian cities listed-medicinal and aromatic plant species: Results of the R+D project FKZ 804 86 003. Bonn: Bundesamt für Naturschutz, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Choi, Jonghoon. Reactive oxygen species production as a toxic mechanism of the photo-induced toxicity of anthracene in fish. 1996.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Review of the status, harvest, trade, and management of seven Asian cities listed medicinal and aromatic plant species: Results of the R+D project FKZ 804 86 003. Germany: Bundesamt fur Naturschutz, Federal Agency for Nature Conservation, 2003.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Kuznetsov, Yuriy, Inna Levina, and Igor Zavarzin. Estrogens and antiestrogens. Modern synthetic approaches to directed modification of estra-1,3,5(10)-triene steroids: goals, reactions, and methods. LCC MAKS Press, 2021. http://dx.doi.org/10.29003/m2020.978-5-317-06626-0.

Full text

Abstract:

The monograph summarizes the information over the past 20 years on the currently widely used and promising methods for the synthesis of estra-1,3,5(10)-triene derivatives by modifying natural estrogens - estrone and estradiol. The main practical goals of modifying this class of steroids and achievements in the chemistry of steroidal antiestrogens, which are promising drugs for hormonal therapy, are considered. Special attention is paid to the stereochemical features of the reactions and the specific problems of modification of the steroid nucleus of estratrienes associated with the presence of an aromatic fragment in their structure. In addition, the data on the reactivity and stereochemical aspects of the transformations of 13-epiestratriene steroids were summarized. The monograph is intended for a wide range of specialists in the field of organic synthesis, organic, bioorganic, and medicinal chemistry.

APA, Harvard, Vancouver, ISO, and other styles

7

Fleetwood, Jenni. 75 Wok and Stir-Fry Recipes: A special collection of fabulous spicy and aromatic Far Eastern recipes shown step by step in 300 color photographs. Southwater, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Morrow, Gary W. Bioorganic Synthesis. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199860531.001.0001.

Full text

Abstract:

Building on the foundation of a one-year introductory course in organic chemistry, Bioorganic Synthesis: An Introduction focuses on organic reactions involved in the biosynthesis of naturally-occurring organic compounds with special emphasis on natural products of pharmacological interest. The book is designed specifically for undergraduate students, rather than as an exhaustive reference work for graduate students or professional researchers and is intended to support undergraduate courses for students majoring in chemistry, biochemistry, biology, pre-medicine, and bioengineering programs who would benefit from a deeper understanding of the chemical logic of reactions carried out in organisms and the origins and uses of the important organic compounds they often produce. The book assumes no prior background in biochemistry and consists of eight chapters: i) a brief review of relevant topics from introductory organic chemistry; ii) presentation of essential organic and biochemical reactions used throughout the book along with a brief introduction to coenzymes; iii) review of basic carbohydrates and the biosynthesis of amino acids; iv) the terpenoid pathway for biosynthesis of all important classes of terpenoids and steroids; v) the acetate pathway for biosynthesis of saturated and unsaturated fatty acids, prostaglandins and acetate-derived polyketide natural products; vi) the biosynthesis of the shikimate pathway products derived from aromatic amino acids; vii) an introduction to biosynthesis of major alkaloids and related nitrogenous compounds; and viii) an overview of laboratory organic synthesis as it relates to the challenges faced by synthetic and medicinal chemists who must recreate intricate natural product structures in the laboratory.

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Aromatic species"

1

Chopra, Suman K., Chester D. Moon, and J. C. Martin. "Quest for an Aromatic Silicon Species." In ACS Symposium Series, 167–80. Washington, DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0555.ch010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Leistner, E. "Morinda Species: Biosynthesis of Quinones in Cell Cultures." In Medicinal and Aromatic Plants VIII, 296–307. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-08612-4_16.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Ravid, U., and E. Putievsky. "Essential Oils of Israeli Wild Species of Labiatae." In Essential Oils and Aromatic Plants, 155–61. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5137-2_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Shimizu, S., and S. Jareonkitmongkol. "Mortierella Species (Fungi): Production of C20 Polyunsaturated Fatty Acids." In Medicinal and Aromatic Plants VIII, 308–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-08612-4_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Shu-Yuan, Qi. "Aquilaria Species: In Vitro Culture and the Production Eaglewood (Agarwood)." In Medicinal and Aromatic Plants VIII, 36–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-662-08612-4_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Sajc, L., N. Kovačević, D. Grubišić, and G. Vunjak-Novaković. "Frangula Species: In Vitro Culture and the Production of Anthraquinones." In Medicinal and Aromatic Plants XI, 157–76. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-662-08614-8_9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Christen, P. "Trigonella Species: In Vitro Culture and Production of Secondary Metabolites." In Medicinal and Aromatic Plants XII, 306–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-08616-2_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Kayani, Waqas Khan, Humna Hasan, and Bushra Mirza. "Advances in Genetic Engineering of Ajuga Species." In Biotechnological Approaches for Medicinal and Aromatic Plants, 599–629. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0535-1_27.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Furmanowa, M., and J. Guzewska. "Dioscorea: In Vitro Culture and the Micropropagation of Diosgenin-Containing Species." In Medicinal and Aromatic Plants II, 162–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-73617-9_10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Skrzypczak, L., M. Wesolowska, and E. Skrzypczak. "Gentiana Species: In Vitro Culture, Regeneration, and Production of Secoiridoid Glucosides." In Medicinal and Aromatic Plants IV, 172–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-77004-3_12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Aromatic species"

1

"Assessment of Formula-Based Structural Annotation of Humic Substances by Mild Chemical Derivatization and Mass Spectrometry." In Sixth International Conference on Humic Innovative Technologies "Humic Substances and Eco-Adaptive Technologies ”(HIT – 2021). Non-Commercial Partnership "Center for Biogenic Resources "Humus Sapiens" (NP CBR "Humus Sapiens"), 2021. http://dx.doi.org/10.36291/hit.2021.mikhnevich.002.

Full text

Abstract:

Natural organic matter (NOM) plays an important role in the environment and its chemical properties and molecular composition reflect balance between mineralization and sequestration of organic carbon. Ultrahigh resolution mass spectrometry (e.g., FTICR MS) provides essential molecular information about NOM. However, NOM molecular heterogeneity prevents application of tandem MS experiments and direct structural information is ultimately missing leaving opportunities to only ambiguous formula-based annotation. The main aim of this work was to develop a chemical workflow to reliably examine the accuracy of several FTICR MS-derived structural indices with the focus on aromaticity and O-functional groups, which greatly impact compound properties. Four NOM samples of different origin (coal, oxidized lignin, river, and permafrost thaw) were brominated by NBS in acetonitrile for 24 hrs at RT. Carboxylic groups in all samples were determined by selective deuteromethylation using CD 3OD/SOCl2 reaction and by HATU amidation with 15N labeled glycine. Carbonyl groups were reduced by NaBD4. All parent and labeled mixtures were analyzed by ESI FTCR MS. Custom python scripts were developed to treat spectra and enumerate specific structural moieties in individual components. Obtained data was used to assess reliability of exact aromaticity indices (AI)1 and aromaticity equivalents (Xc) 2. Lignin- and coal-derived samples turned out to be the most sensitive to bromination which corroborated with the model phenolic structures. On contrary, permafrost thaw, which is enriched with labile species, was mostly resistant to bromination - 22% of molecular ions were brominated. Moreover, unlike oxidized riverine sample, coal NOM included polybrominated species, which implies that reaction efficiency depends on reactivity (i.e. substituents) of aromatic fragments. Samples were characterized by drastically different bromine distributions on van Krevelen diagrams, which correlated with the distribution of non-carboxylic oxygen atoms. Further, we compared AI and Xc aromaticity indices in terms of the proportion of correctly assigned aromatics. The data on brominated molecules were in good agreement with the AI values; however, apparently AI tends to overestimate the number of non-aromatics in the sample since it describe averaged aromaticity rather than the factual presence of aromatic ring. On the other hand, Xc perfectly recognized non-aromatics. In general, a higher proportion of correctly attributed aromatics was observed for the aromaticity equivalent Xc (up to 68%), which tends to find aromatic moieties in non-aromatic molecules assigned by AI. Still, we observed a number of aromatic- and condensed aromatic-assigned compounds, which were resistant to bromination or included lesser Br-atoms than the evaluated number of aromatic rings. Reaction with NaBD4 and enumeration of labeling series revealed the presence of carbonyl groups in these species, which in case of multiple reducing could be reliably assigned to quinone – condensed non-aromatic compounds. The approach may be of great importance in biogeochemical and medicinal studies of NOM. Acknowledgements. This work was supported by the Russian Science Foundation gran No 21-47-04405. References 1. Zherebker, A., Lechtenfeld, O. J., Sarycheva, A., Kostyukevich, Y., Kharybin, O., Fedoros, E. I. and Nikolaev, E. N. Anal. Chem., 2020, 92 (13), 9032-9038; 2. Yassine, M.M., Harir, M., Dabek-Zlotorzynska, E. and Schmitt-Kopplin, P. Rapid Commun. Mass Spectrom., 2014, 28, 2445-2454.

APA, Harvard, Vancouver, ISO, and other styles

2

Ellison, Barney, Patrick Hemberger, Timothy Zwier, Musahid Ahmed, John Stanton, John Daily, and Thomas Ormond. "MOLECULAR PROPERTIES OF THE ÄNTI-AROMATIC" SPECIES CYCLOPENTADIENONE, C5H5=0." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rb05.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Cabaleiro-Lago, Enrique M., Jorge A. Carrazana-García, Ivan Gonzalez-Veloso, and Jesús Rodríguez-Otero. "Computational study of stacked complexes of aliphatic and aromatic species." In The 23rd International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2019. http://dx.doi.org/10.3390/ecsoc-23-06603.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kwon, Eilhann, and Marco J. Castaldi. "Polycyclic Aromatic Hydrocarbon (PAH) Formation in Thermal Degradation of Styrene Butadiene Copolymer (SBR)." In 14th Annual North American Waste-to-Energy Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/nawtec14-3188.

Full text

Abstract:

This study has been initiated to quantify the release of the Polycyclic Aromatic Hydrocarbon (PAH) species from Styrene Butadiene Copolymer (SBR) during gasification. The identification and quantification has been determined experimentally using Gas Chromatography/Mass Spectroscopy (GC/MS) coupled to a Thermo-Gravimetric Analysis (TGA) unit. SBR samples were pyrolysed in a TGA unit in a N2 atmosphere. The identities and absolute concentrations of over 32 major and minor species have been established, including a large number of aromatics, substituted aromatics, and PAHs. The light hydrocarbon species also have been determined simultaneously and identified as H2, C2H2, CH4, C2H6, and C4H10 with lower concentrations of other hydrocarbon gases. Significant amounts of ethyl benzene, toluene, and styrene were observed between 330°C and 500°C. The largest PAH detected was the family of C24H14 (molecular weight 302), benzo[ghi]perylene with peak concentrations reaching 0.19 ppmv. The effluent species detected suggest that formation of PAH’s occurs either through hydrocarbon addition reactions or benzene ring re-combination reactions. In addition, the chemical structure of SBR lends itself gas phase release of benzene molecules or radicals, thus facilitating the PAH production route. Preliminary calculations done using MOPAC provided some insight into the energy required to break the benzene ligand bond from the butadiene structure. The measurements supply information on the identities and levels of hazardous air pollutants, and provide useful new data for the development and validation of detailed reaction mechanisms describing their origin and fate.

APA, Harvard, Vancouver, ISO, and other styles

5

Matveev, S. S., D. V. Idrisov, and A. S. Semenikhin. "LAMINAR BURNING VELOCITY OF INDIVIDUAL HYDROCARBONS AND KEROSENE SURROGATES." In 9TH INTERNATIONAL SYMPOSIUM ON NONEQUILIBRIUM PROCESSES, PLASMA, COMBUSTION, AND ATMOSPHERIC PHENOMENA. TORUS PRESS, 2020. http://dx.doi.org/10.30826/nepcap9a-25.

Full text

Abstract:

Surrogate fuel blends are often used in laboratory experiments and in combustion modeling to reproduce important characteristics of real transportation fuels. Fuel surrogates usually consist of a few class-representative hydrocarbons such as normal and branched alkanes, aromatics, and cycloalkanes. The complexity of a particular blend depends on the number of combustion properties (targets) taken into account. Most often, binary [1] and ternary blends were suggested as kerosene surrogates; yet, in some cases, a single species, n-decane [2], was used to make comparison with kerosene combustion characteristics such as burning velocity and, for example, to determine the emission of polycyclic aromatic hydrocarbons, complex 4-6 component surrogates.

APA, Harvard, Vancouver, ISO, and other styles

6

Hou, Jie, Wayne Chang, Fuwu Yan, and Chia-Fon Lee. "A Modeling Study of the Effects of Butanol Addition on Aromatic Species in Premixed Butane Flames." In SAE 2016 World Congress and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-01-0574.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Gupta, Divita, Ian Sims, Mitchio Okumura, Joseph Messinger, and Ilsa Cooke. "LOW-TEMPERATURE KINETICS MEASUREMENTS OF THE GAS-PHASE REACTIONS BETWEEN AROMATIC SPECIES AND THE CN RADICAL." In 2020 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2020. http://dx.doi.org/10.15278/isms.2020.fb01.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Mladenovic, Jelena, Veronika Markovic, Ljiljana Boskovic-Rakocevic, Milena Đuric, and Nenad Pavlovic. "ISPITIVANJE EKSTRAKATA ORIGANA DOBIJENIH RAZLIČITIM METODAMA." In XXVI savetovanje o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.407m.

Full text

Abstract:

Oregano is used in the production of specific aromatic cheeses, meat products and dough dishes, for the production of medicinal preparations, fragrant soaps, colognes and perfumes. Special interest in oregano in recent years is related to the results of a study of its biological activities, which indicate a wide range of antibacterial, fungicidal, antiviral and antioxidant properties. The subject of this paper is the examination of extracts of plant species of oregano (Origanum vulgare), with the aim of determining the method that is most popular for extracting this plant species and which gives the best yields of extracts. The content of extracted substances in each extract, the content of vitamin C as well as the content of organic acids were determined.

APA, Harvard, Vancouver, ISO, and other styles

9

Vishwanathan, Gokul, and Rolf D. Reitz. "Modeling Soot Formation Using Reduced PAH Chemistry in n-Heptane Lifted Flames With Application to Low Temperature Combustion." In ASME 2008 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ices2008-1647.

Full text

Abstract:

A numerical study of in-cylinder soot formation and oxidation processes in n-heptane lifted flames using various soot inception species has been conducted. In a recent study by the authors, it was found that the soot formation and growth regions in lifted flames were not adequately represented by using acetylene alone as the soot inception species. Comparisons with a conceptual model and available experimental data suggested that the location of soot formation regions could be better represented if polycyclic aromatic hydrocarbon (PAH) species were considered as alternatives to acetylene for soot formation processes. Since the local temperatures are much lower under low temperature combustion (LTC) conditions, it is believed that significant soot mass contribution can be attributed to PAH rather than to acetylene. To quantify and validate the above observations, a reduced n-heptane chemistry mechanism has been extended to include PAH species up to four fused aromatic rings (pyrene). The resulting chemistry mechanism was integrated into the multidimensional CFD code KIVA-CHEMKIN for modeling soot formation in lifted flames in a constant volume chamber. The investigation revealed that a simpler model that only considers up to phenanthrene (three fused rings) as the soot inception species has good possibilities for better soot location predictions. The present work highlights and illustrates the various research challenges toward accurate qualitative and quantitative predictions of soot for new low emission combustion strategies for I.C. engines.

APA, Harvard, Vancouver, ISO, and other styles

10

Kwon, Eilhann, and Marco J. Castaldi. "Investigation of Thermo-Gravimetric Analysis (TGA) on Waste Tires and Chemical Analysis Including Light Hydrocarbons, Substituted Aromatics, and Polycyclic Aromatic Hydrocarbon (PAH)." In 15th Annual North American Waste-to-Energy Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/nawtec15-3218.

Full text

Abstract:

This investigation has been initiated to characterize the thermal decomposition of waste tires with Thermo-Gravimetric Analysis (TGA) in various atmospheres ranging in oxygen content; 100% N2, 7%, 21% (air) and 30% O2. Chemical analysis focusing on light hydrocarbons, substituted aromatics, and polycyclic aromatic hydrocarbon has been done qualitatively and quantitatively to understand the mechanism of thermal degradation of scrap tires and hazardous air pollutants such as PAH. The release of chemicals from scrap tires has been determined experimentally using Gas Chromatography/Mass Spectroscopy (GC/MS) coupled to TGA unit. The identities and absolute concentrations of over 50 major and minor species have been established. Significant volatile organic carbons (VOC) including substituted aromatics and PAH were observed between 300°C and 500°C. In addition, significant black carbon residual was observed in most environments except air and oxygen enhanced atmospheres and suggested not only the potential recovery of black carbon out of feedstock, but also the possibility of combined thermal treatment between combustion and gasification. These measurements supply information on the identities and levels of hazardous air pollutants, and provide useful new data for the development and validation of detailed reaction mechanisms describing their origin and fate. Finally, while high contents of VOC show significant potential to be utilized as an unconventional solid fuel, they also tend to generate hazardous pollutants.

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Aromatic species"

1

Brezinsky, K. Very High Pressure Single Pulse Shock Tube Studies of Aromatic Species. Office of Scientific and Technical Information (OSTI), November 2006. http://dx.doi.org/10.2172/895611.

Full text

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!