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Journal articles on the topic 'Polycyclic'

To see the other types of publications on this topic, follow the link: Polycyclic.

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Ati, Estabraq Mohammed. "The Seasonal Variations of Polycyclic Aromatic Hydrocarbon Polycyclic: A Review." International Journal of Psychosocial Rehabilitation 24, no. 4 (February 28, 2020): 4877–83. http://dx.doi.org/10.37200/ijpr/v24i4/pr201587.

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2

Boben, M., and T. Pisanski. "Polycyclic configurations." European Journal of Combinatorics 24, no. 4 (May 2003): 431–57. http://dx.doi.org/10.1016/s0195-6698(03)00031-3.

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3

Barton, John W., and David J. Rowe. "Polycyclic biphenylenes." Tetrahedron 41, no. 7 (January 1985): 1323–28. http://dx.doi.org/10.1016/s0040-4020(01)96534-2.

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4

Fariña, Francisco, M. Carmen Paredes, and Valter Stefani. "Polycyclic hydroxyquinones." Tetrahedron 42, no. 15 (January 1986): 4309–18. http://dx.doi.org/10.1016/s0040-4020(01)87657-2.

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5

Ayyangar, N. R., S. V. Joshi, K. V. Srinivasan, V. G. Puranik, S. S. Tavale, and T. N. Guru Row. "Polycyclic compounds." Dyes and Pigments 7, no. 2 (January 1986): 81–92. http://dx.doi.org/10.1016/0143-7208(86)85001-x.

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6

Assmann, Björn, and Bettina Eick. "Computing polycyclic presentations for polycyclic rational matrix groups." Journal of Symbolic Computation 40, no. 6 (December 2005): 1269–84. http://dx.doi.org/10.1016/j.jsc.2005.05.003.

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7

Bauer, Ingmar, and Wolf D. Habicher. "In,out-Isomerism of Phosphorus Bridgehead Cage Compounds. A Review." Collection of Czechoslovak Chemical Communications 69, no. 6 (2004): 1195–230. http://dx.doi.org/10.1135/cccc20041195.

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The chemistry and stereochemical peculiarities, especially the phenomenon of in,out-isomerism of bi- and polycyclic compounds with one or more phosphorus bridgehead atoms, are reviewed in the present paper. The appearance of in,out-isomers depends on the ring size of the bi- and polycycles. In general graphic in,out-isomerism becomes only possible in medium sized ring systems and in particular in macrocyclic compounds. However even bicyclic systems containing small rings can be trans-configured if the third chain is long and flexible enough hence giving rise to pseudo-in,out-isomerism. In-phosphorus atoms exhibit a low reactivity in comparison to their out-counterparts. Nevertheless some few examples of reactions at in-positioned phosphorus atoms have been presented. This will potentially open the way to a specific modification of the cavity of such macrobi- and polycyclic compounds. A review with 53 references.

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8

Berger, Reinhard, Manfred Wagner, Xinliang Feng, and Klaus Müllen. "Polycyclic aromatic azomethine ylides: a unique entry to extended polycyclic heteroaromatics." Chemical Science 6, no. 1 (2015): 436–41. http://dx.doi.org/10.1039/c4sc02793k.

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9

Donadze, G., M. Ladra, and P. Páez-Guillán. "Schur's theorem and its relation to the closure properties of the non-abelian tensor product." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 150, no. 2 (January 26, 2019): 993–1002. http://dx.doi.org/10.1017/prm.2018.150.

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AbstractWe show that the Schur multiplier of a Noetherian group need not be finitely generated. We prove that the non-abelian tensor product of a polycyclic (resp. polycyclic-by-finite) group and a Noetherian group is a polycyclic (resp. polycyclic-by-finite) group. We also prove new versions of Schur's theorem.

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10

Chen, Yuan-Yuei, Tung-Wei Kao, Chung-Ching Wang, Chen-Jung Wu, Yi-Chao Zhou, and Wei-Liang Chen. "Association between polycyclic aromatic hydrocarbons exposure and bone turnover in adults." European Journal of Endocrinology 182, no. 3 (March 2020): 333–41. http://dx.doi.org/10.1530/eje-19-0750.

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Background Cigarette smoking is a risk factor of osteoporosis and bone fracture. Tobacco smoke contains several polycyclic aromatic hydrocarbons. Thus, we hypothesized that environmental polycyclic aromatic hydrocarbon exposure is associated with bone loss and fracture risk. The present study examined the association between polycyclic aromatic hydrocarbon exposure and bone turnover in the general adult population. Methods A total of 1408 eligible participants from the National Health and Nutrition Examination Survey (NHANES 2001–2006) were included in this cross-sectional analysis. The levels of urinary N-telopeptide and serum bone-specific alkaline phosphatase, which are biomarkers of bone resorption and formation, respectively, were assessed. Meanwhile, polycyclic aromatic hydrocarbon exposure was evaluated using the concentrations of urinary polycyclic aromatic hydrocarbon metabolites. The association between polycyclic aromatic hydrocarbon exposures and N-telopeptide, and bone-specific alkaline phosphatase levels was assessed using a multivariate linear regression model. Results All polycyclic aromatic hydrocarbon metabolites except 3-phenanthrene were significantly associated with increased N-telopeptide levels (P < 0.05) after adjustment of relevant covariables. However, no significant relationship was observed between polycyclic aromatic hydrocarbon metabolites and bone-specific alkaline phosphatase levels. This relationship remained significant after the participants were assessed according to sex (P < 0.05). Additionally, all polycyclic aromatic hydrocarbon metabolites showed a positive association with N-telopeptide levels in participants aged <60 years (P < 0.05). Conclusion Polycyclic aromatic hydrocarbon exposure is associated with increased bone resorption among the general adult population in the United States. Further studies must assess the potential mechanisms associated with the adverse effects of polycyclic aromatic hydrocarbon exposure on bone loss.

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11

Vácha, R., J. Čechmánková, and J. Skála. "Polycyclic aromatic hydrocarbons in soil and selected plants." Plant, Soil and Environment 56, No. 9 (September 16, 2010): 434–43. http://dx.doi.org/10.17221/7/2010-pse.

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The influence of soil load with polycyclic aromatic hydrocarbons (PAHs) on their contents in selected plants was investigated. A set of experiments was realized in three years. The influence of extreme soil load with PAHs (soil contaminated by floods and sludge application) on their content in plants was observed in a pot trial. A laboratory column extract trial investigated PAHs transfer from the soil into soil solution in different conditions. The results showed that the transfer of PAHs into plants is influenced mainly by chemical characteristics of the substances (the number and position of aromatic nuclei); by soil characteristics (content and quality of soil organic matter) and by plant characteristics (plant species and plant bodies). The roots of tested plants were loaded with PAHs thanks to the transfer of less-nuclei compounds (2–3 nuclei) in soil solution into the roots and thanks to the binding of more nuclei compounds (4–6 nuclei) on organic substances in epidermis and primary bark of roots. These results were confirmed by a laboratory column trial.

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12

Dias, Ivonildes Ribeiro Martins, and Noraí Romeu Rocco. "A polycyclic presentation for the 𝑞-tensor square of a polycyclic group." Journal of Group Theory 23, no. 1 (January 1, 2020): 97–120. http://dx.doi.org/10.1515/jgth-2019-0032.

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AbstractLet G be a group and q a non-negative integer. We denote by {\nu^{q}(G)} a certain extension of the q-tensor square {G\otimes^{q}G} by {G\times G}. In this paper, we describe an algorithm for deriving a polycyclic presentation for {G\otimes^{q}G} when G is polycyclic, via its embedding into {\nu^{q}(G)}. Furthermore, we derive polycyclic presentations for the q-exterior square {G\wedge^{q}G} and for the second homology group {H_{2}(G,\mathbb{Z}_{q})}. Additionally, we establish a criterion for computing the q-exterior center {Z_{q}^{\wedge}(G)} of a polycyclic group G, which is helpful for deciding whether or not G is capable modulo q. These results extend to all {q\geq 0} generalizing methods due to Eick and Nickel for the case {q=0}.

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13

Coleman, William F. "Polycyclic Aromatic Hydrocarbons." Journal of Chemical Education 81, no. 2 (February 2004): 245. http://dx.doi.org/10.1021/ed081p245.

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14

Ciochina, Roxana, and Robert B. Grossman. "Polycyclic Polyprenylated Acylphloroglucinols." Chemical Reviews 106, no. 9 (September 2006): 3963–86. http://dx.doi.org/10.1021/cr0500582.

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15

Riyaz, Najeeba, and A. Riyaz. "Erythematous polycyclic patches." Indian Journal of Dermatology, Venereology and Leprology 72, no. 5 (2006): 398. http://dx.doi.org/10.4103/0378-6323.27773.

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16

Ball, Melissa, Yu Zhong, Ying Wu, Christine Schenck, Fay Ng, Michael Steigerwald, Shengxiong Xiao, and Colin Nuckolls. "Contorted Polycyclic Aromatics." Accounts of Chemical Research 48, no. 2 (December 19, 2014): 267–76. http://dx.doi.org/10.1021/ar500355d.

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17

Böhm, D., D. Hu, and U. Zenneck. "Polycyclic Polyphosphorus Hydrocarbons." Phosphorus, Sulfur, and Silicon and the Related Elements 77, no. 1-4 (April 1993): 5–8. http://dx.doi.org/10.1080/10426509308045605.

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18

Jusélius, Jonas, and Dage Sundholm. "Polycyclic antiaromatic hydrocarbons." Physical Chemistry Chemical Physics 10, no. 44 (2008): 6630. http://dx.doi.org/10.1039/b808082h.

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19

Hu, Dongqi, Hartmut Schäufele, Hans Pritzkow, and Ulrich Zenneck. "Polycyclic Polyphosphorus Hydrocarbons." Angewandte Chemie International Edition in English 28, no. 7 (July 1989): 900–902. http://dx.doi.org/10.1002/anie.198909001.

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20

Veith, M., M. Jarczyk, and V. Huch. "New Polycyclic Aluminopolysiloxanes." Phosphorus, Sulfur, and Silicon and the Related Elements 124, no. 1 (January 1, 1997): 213–22. http://dx.doi.org/10.1080/10426509708545626.

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21

Yavolovskii, A. A., O. S. Timofeev, and É. I. Ivanov. "Novel polycyclic pyrimidines." Chemistry of Heterocyclic Compounds 34, no. 8 (August 1998): 976–78. http://dx.doi.org/10.1007/bf02311336.

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22

Baeriswyl, Vanessa, and Christian Heinis. "Polycyclic Peptide Therapeutics." ChemMedChem 8, no. 3 (January 25, 2013): 377–84. http://dx.doi.org/10.1002/cmdc.201200513.

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23

Tantillo, Dean J. "Drawing Polycyclic Molecules." ACS Omega 6, no. 36 (September 3, 2021): 23008–14. http://dx.doi.org/10.1021/acsomega.1c03607.

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24

Mubeen, Ishrat, Audil Rashid, Muhammad Khan, Mi Yan, and Hafiz Ali. "Urban contamination assessment of polycyclic aromatic hydrocarbons released from an oil refinery in Rawalpindi." Thermal Science, no. 00 (2021): 55. http://dx.doi.org/10.2298/tsci200402055m.

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Polycyclic Aromatic Hydrocarbons are among persistent organic pollutants and incomplete combustion of hydrocarbons during petroleum processing activities may cause polycyclic aromatic hydrocarbons contamination in the surrounding area. For the first time in Morgah, Rawalpindi, Pakistan, three targeted polycyclic aromatic hydrocarbons i.e. naphthalene, phenanthrene and pyrene were estimated from surroundings of an oil refinery. Samples were collected simultaneously in soil, water and leaves of Melia azedarach L., a widely grown tree species in the sampling area, along different selected sites of main drainage coming out of the refinery. Among three polycyclic aromatic hydrocarbons, pyrene was observed in maximum concentration (24.31 mg kg-1 in soil) among all selected environmental media and studied compounds showed a dynamic behavior in context of accumulation at different sampling points. There was a significant effect of distance, from petroleum refining area on polycyclic aromatic hydrocarbons levels in soil, water and plant leaves. Our findings provide conclusive evidence that location of an oil refinery has attributed to high polycyclic aromatic hydrocarbons contamination in selected study area which can pose significant risk to general environment and to the public.

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25

MANN, AVINOAM, and DAN SEGAL. "BREADTH IN POLYCYCLIC GROUPS." International Journal of Algebra and Computation 17, no. 05n06 (August 2007): 1073–83. http://dx.doi.org/10.1142/s0218196707004074.

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The breadth of a polycyclic group is the maximum of h(G) - h(CG(x)) for x ∈ G, where h(G) is the Hirsch length. We prove a number of results that bound the class of a finitely generated nilpotent group, and the Hirsch length of the derived group in a polycyclic group, in terms of the breadth. These results are analogues of well-known results in finite group theory.

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26

Byambaa, Batdelger, Lu Yang, Atsushi Matsuki, Edward Nagato, Khongor Gankhuyag, Byambatseren Chuluunpurev, Lkhagvajargal Banzragch, Sonomdagva Chonokhuu, Ning Tang, and Kazuichi Hayakawa. "Sources and Characteristics of Polycyclic Aromatic Hydrocarbons in Ambient Total Suspended Particles in Ulaanbaatar City, Mongolia." International Journal of Environmental Research and Public Health 16, no. 3 (February 2, 2019): 442. http://dx.doi.org/10.3390/ijerph16030442.

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The purpose of this study was to identify pollution sources by characterizing polycyclic aromatic hydrocarbons from total suspended particles in Ulaanbaatar City. Fifteen polycyclic aromatic hydrocarbons were measured in total suspended particle samples collected from different sites, such as the urban center, industrial district and ger (Mongolian traditional house) areas, and residential areas both in heating (January, March), and non-heating (September) periods in 2017. Polycyclic aromatic hydrocarbon concentration ranged between 131 and 773 ng·m−3 in winter, 22.2 and 530.6 ng·m−3 in spring, and between 1.4 and 54.6 ng·m−3 in autumn. Concentrations of specific polycyclic aromatic hydrocarbons such as phenanthrene were higher in the ger area in winter and spring seasons, and the pyrene concentration was dominant in late summer in the residential area. Polycyclic aromatic hydrocarbons concentrations in the ger area were particularly higher than the other sites, especially in winter. Polycyclic aromatic hydrocarbon ratios indicated that vehicle emissions were likely the main source at the city center in the winter time. Mixed contributions from biomass, coal, and petroleum combustion were responsible for the particulate polycyclic aromatic hydrocarbon pollution at other sampling sites during the whole observation period. The lifetime inhalation cancer risk values in the ger area due to winter pollution were estimated to be 1.2 × 10−5 and 2.1 × 10−5 for child and adult exposures, respectively, which significantly exceed Environmental Protection Agency guidelines.

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27

Minabe, Masahiro, Bongsup P. Cho, and Ronald G. Harvey. "Polycyclic fluoranthene hydrocarbons. Part 4. Electrophilic substitution of polycyclic fluoranthene hydrocarbons." Journal of the American Chemical Society 111, no. 11 (May 1989): 3809–12. http://dx.doi.org/10.1021/ja00193a008.

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28

Liu, D., R. J. Maguire, G. J. Pacepavicius, and E. Nagy. "Microbial degradation of polycyclic aromatic hydrocarbons and polycyclic aromatic nitrogen heterocyclics." Environmental Toxicology & Water Quality 7, no. 4 (November 1992): 355–72. http://dx.doi.org/10.1002/tox.2530070406.

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29

Liang, Xiao Juan, and Xi Qin Li. "Research on Emissions of Benzene & Polycyclic Aromatic Hydrocarbons in Constant Volume Combustion Bomb." Advanced Materials Research 468-471 (February 2012): 2993–97. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.2993.

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Polycyclic aromatic hydrocarbons are harmful to human body and environment. In order to know the formatting rules of benzene and polycyclic aromatic hydrocarbons in gasoline combustion process, a series of tests are done in a constant volume combustion bomb. The emissions of benzene and polycyclic aromatic hydrocarbons are measured by a gas chromatography-mass spectrometry analyzer. The test results show that the benzene in combustion products comes from the incomplete combustion fuel. The free radicals out of cracking fuel may also become benzene in combustion process. Adding ethanol in fuels does not necessarily increase the emission of benzene. Formation of polycyclic aromatic hydrocarbons varies with temperature.

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30

Mohammad, Siti Afiqah, Nor Haniza Sarmin, and Hazzirah Izzati Mat Hassim. "Polycyclic transformations of crystallographic groups with quaternion point group of order eight." Malaysian Journal of Fundamental and Applied Sciences 13, no. 4 (December 26, 2017): 788–91. http://dx.doi.org/10.11113/mjfas.v13n4.752.

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Exploration of a group's properties is vital for better understanding about the group. Amongst other properties, the homological invariants including the nonabelian tensor square of a group can be explicated by showing that the group is polycyclic. In this paper, the polycyclic presentations of certain crystallographic groups with quaternion point group of order eight are shown to be consistent; which implies that these groups are polycyclic.

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31

LICHTMAN, A. I. "RESTRICTED LIE ALGEBRAS OF POLYCYCLIC GROUPS." Journal of Algebra and Its Applications 05, no. 05 (October 2006): 571–627. http://dx.doi.org/10.1142/s0219498806001892.

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We consider some classes of polycyclic groups which have a p-series such that the restricted graded Lie algebra associated to this p-series is free abelian. We also study p-series and restricted Lie algebras associated to them in arbitrary polycyclic groups.

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32

Forni, Eleonora, Laura Cipolla, Enrico Caneva, Barbara La Ferla, Francesco Peri, and Francesco Nicotra. "Polycyclic scaffolds from fructose." Tetrahedron Letters 43, no. 7 (February 2002): 1355–57. http://dx.doi.org/10.1016/s0040-4039(01)02393-0.

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33

White, Curt M. "Nitrated polycyclic aromatic hydrocarbons." Analytica Chimica Acta 184 (1986): 344–45. http://dx.doi.org/10.1016/s0003-2670(00)86516-2.

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34

Grunewald, Fritz, and Vladimir Platonov. "Non-arithmetic polycyclic groups." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 326, no. 12 (June 1998): 1359–64. http://dx.doi.org/10.1016/s0764-4442(98)80392-3.

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35

Segal, Dan. "The General Polycyclic Group." Bulletin of the London Mathematical Society 19, no. 1 (January 1987): 49–56. http://dx.doi.org/10.1112/blms/19.1.49.

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36

Brookes, C. J. B. "Modules Over Polycyclic Groups." Proceedings of the London Mathematical Society s3-57, no. 1 (July 1988): 88–108. http://dx.doi.org/10.1112/plms/s3-57.1.88.

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37

Xie, Xiaochen, Mairi F. Haddow, Stephen M. Mansell, Nicholas C. Norman, and Christopher A. Russell. "New polycyclic borazine species." Chemical Communications 47, no. 13 (2011): 3748. http://dx.doi.org/10.1039/c1cc10196j.

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38

Fu, Peter P. "Nitrated polycyclic aromatic hydrocarbons." Journal of Chromatography A 398 (1987): 395–96. http://dx.doi.org/10.1016/s0021-9673(01)96535-5.

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39

Müller, Markus, Christian Kübel, and Klaus Müllen. "Giant Polycyclic Aromatic Hydrocarbons." Chemistry - A European Journal 4, no. 11 (November 2, 1998): 2099–109. http://dx.doi.org/10.1002/(sici)1521-3765(19981102)4:11<2099::aid-chem2099>3.0.co;2-t.

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40

Lan, Yanping, Yixian Qian, and Zhijun Ren. "Tunable Polycyclic Chiral Beams." Annalen der Physik 532, no. 4 (April 2020): 1900530. http://dx.doi.org/10.1002/andp.201900530.

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41

Mokrushina, G. A., E. V. Nosova, G. N. Lipunova, and V. N. Charushin. "ChemInform Abstract: Polycyclic Fluoroquinolinones." ChemInform 31, no. 37 (September 12, 2000): no. http://dx.doi.org/10.1002/chin.200037272.

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42

Passman*, D. S., and V. M. Petrogradsky†. "POLYCYCLIC RESTRICTED LIE ALGEBRAS." Communications in Algebra 29, no. 9 (July 31, 2001): 3829–38. http://dx.doi.org/10.1081/agb-100105977.

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43

Musina, Elvira I., Anna S. Balueva, Katherine V. Kovalenko, and Georgy N. Nikonov. "Polycyclic Phosphorus-Containing Oxaboracyclanes." Phosphorus, Sulfur, and Silicon and the Related Elements 147, no. 1 (January 1, 1999): 275. http://dx.doi.org/10.1080/10426509908053618.

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44

Mulas, Giacomo, Giuliano Malloci, and Ignazio Porceddu. "Identifyingspecificinterstellar polycyclic aromatic hydrocarbons." Journal of Physics: Conference Series 6 (January 1, 2005): 217–22. http://dx.doi.org/10.1088/1742-6596/6/1/026.

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45

Fawcett, H. H. "Polycyclic Hydrocarbons and Carcinogenesis." Journal of Hazardous Materials 14, no. 2 (January 1987): 279. http://dx.doi.org/10.1016/0304-3894(87)87024-3.

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46

Lo, E. H. "A Polycyclic Quotient Algorithm." Journal of Symbolic Computation 25, no. 1 (January 1998): 61–97. http://dx.doi.org/10.1006/jsco.1997.0167.

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47

De Falco, Maria, Francesco de Giovanni, and Carmela Musella. "Groups with Finitely Many Normalizers of Non-polycyclic Subgroups." Algebra Colloquium 17, no. 02 (June 2010): 203–10. http://dx.doi.org/10.1142/s1005386710000210.

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The structure of locally graded groups with finitely many normalizers of non-polycyclic subgroups is investigated. In particular, it is proved that such groups either are polycyclic or have Černikov commutator subgroups.

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48

Gerasimov, Gennady. "Modelling study of electron-beam polycyclic and nitro-polycyclic aromatic hydrocarbons treatment." Radiation Physics and Chemistry 76, no. 1 (January 2007): 27–36. http://dx.doi.org/10.1016/j.radphyschem.2005.12.042.

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49

EICK, BETTINA. "WHEN IS THE AUTOMORPHISM GROUP OF A VIRTUALLY POLYCYCLIC GROUP VIRTUALLY POLYCYCLIC?" Glasgow Mathematical Journal 45, no. 3 (September 2003): 527–33. http://dx.doi.org/10.1017/s0017089503001423.

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50

Fujishiro, Koichi, and Shuichi Mitamura. "The Baeyer–Villiger Reaction of Polycyclic Aromatic Aldehydes: Preparation of Polycyclic Phenols." Bulletin of the Chemical Society of Japan 61, no. 12 (December 1988): 4464–66. http://dx.doi.org/10.1246/bcsj.61.4464.

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