Search results for "Benzene"
showing 10 items of 1701 documents
Chemically induced mouse models of intestinal inflammation
2007
Animal models of intestinal inflammation are indispensable for our understanding of the pathogenesis of Crohn disease and ulcerative colitis, the two major forms of inflammatory bowel disease in humans. Here, we provide protocols for establishing murine 2,4,6-trinitro benzene sulfonic acid (TNBS)-, oxazolone- and both acute and chronic dextran sodium sulfate (DSS) colitis, the most widely used chemically induced models of intestinal inflammation. In the former two models, colitis is induced by intrarectal administration of the covalently reactive reagents TNBS/oxazolone, which are believed to induce a T-cell-mediated response against hapten-modified autologous proteins/luminal antigens. In …
CCDC 2045993: Experimental Crystal Structure Determination
2021
Related Article: Md Kamal Hossain, Maxym O. Plutenko, Jörg A. Schachner, Matti Haukka, Nadia C. Mösch-Zanetti, Igor O. Fritsky, Ebbe Nordlander|2021|J.Indian Chem.Soc.|98|100006|doi:10.1016/j.jics.2021.100006
Fluorescence enhancement of quinolines by protonation.
2020
A study of the fluorescence enhancement of isoquinoline, acridine (benzo[b]quinoline) and benzo[h]quinoline is reported with six organic acids of different pKa values. Protonation was found to be an effective tool in the fluorescence enhancement of quinolines. A significant increase in the fluorescence intensity is observed only when strong acids are used, resulting in an over 50-fold increase in fluorescence with trifluoroacetic or benzenesulfonic acid and isoquinoline in a 1.5 : 1 ratio. The benzenesulfonic acid was found to be the most effective in the protonation of the bases despite its higher pKa value compared to trifluoro- and trichloroacetic acid. The X-ray crystal structures of 14…
Esposizione a basse dosi di benzene: confronto di indicatori biologici tra soggetti professionalmente esposti e popolazione generale
2007
Exposure to low doses of benzene: biological monitoring exposure in a group of occupational exposed workers and a group of general population. Even if exposure to benzene is considerably decreased in last years, the interest for this cercinogenic agent is still important. Benzene is used as additive in gasoline and it is present in cigarette smoke. Therefore benzene is considered an important toxic agent not only for occupational exposed people, but also for general population, in particular if living in high polluted areas. Aim of the present study is evaluation of trans, trans-muconic acid in urine of workers exposed to benzene and in the general population, making a distinction between s…
Studio osservazionale sui livelli di acido t,t-muconico urinario in un gruppo di soggetti esposti a bassissime concentrazioni di benzene.
2008
Giornale Italiano di Medicina del Lavoro ed Ergonomia 2008 Vol. XXX supplemento 2 al N. 3 Luglio-Settembre
Data and code for "Dipolar coupling of nanoparticle-molecule assemblies: An efficient approach for studying strong coupling"
2021
The data includes the optical excitations of benzene, the optical spectra of coupled benzene-Al NP systems, and fits of the spectra to the coupled oscillator model. The optical spectra in question have been obtained in the dipolar coupling approximation and analyzed in the article "Dipolar coupling of nanoparticle-molecule assemblies: An efficient approach for studying strong coupling" by Jakub Fojt, Tuomas P. Rossi, Tomasz J. Antosiewicz, Mikael Kuisma and Paul Erhart. Scripts for processing of the data, which extract optical spectra from NWChem output files, and fit optical spectra to the coupled oscillator model, are also included. The scripts are written in Python and require …
CCDC 1994293: Experimental Crystal Structure Determination
2021
Related Article: Ali Sanda Bawa, Rita Meunier-Prest, Yoann Rousselin, Jean-Pierre Couvercelle, Christine Stern, Bernard Malézieux, Marcel Bouvet|2021|CrystEngComm|23|6418|doi:10.1039/D1CE00929J
Palladium(II)-Mediated Addition of Benzenediamines to Isocyanides: Generation of Three Types of Diaminocarbene Ligands Depending on the Isomeric Stru…
2016
Coupling of the palladium-bis(isocyanide) complexes cis-[PdCl2(CNR)2] (R = 2,6-Me2C6H3 1, 2-Cl-6-MeC6H3 2) with benzene-1,3-diamine (BDA1) leads to the diaminocarbene species cis-[PdCl2(CNR){C(NHR)═NH(1,3-C6H4NH2)}] (5 and 6, respectively). In this reaction, BDA1 behaves as a monofunctional nucleophile that adds to one of the RNC ligands by one amino group. By contrast, the reaction of 1 and 2 with benzene-1,4-diamine (BDA2) involves both amino functionalities of the diamine and leads to the binuclear species [cis-PdCl2(CNR){μ-C(NHR)═NH(1,4-C6H4)NH═C(NHR)}-(cis)-PdCl2(CNR)] (6 and 7) featuring two 1,4-bifunctional diaminocarbene ligands. The reaction of cis-[PdCl2(CNR)2] (R = cyclohexyl 3) …
Tetrakis(methylammonium) benzene-1,2,4,5-tetracarboxylate dihydrate
2006
In the title compound, 4CH6N+·C10H2O8 4−·2H2O, the complete C10H2O8 4− anion is generated by inversion; one of the unique carboxylate groups is almost coplanar with the benzene ring, perhaps as the result of intramolecular C—H...O interactions, and the other is almost perpendicular. A network of O—H...O and N—H...O hydrogen bonds helps to consolidate the crystal packing.
Semisynthetic roxburghin tetramethyl ether
2008
The title molecule, (E)-2,3′,4,5-tetramethoxystilbene, C18H20O4, is virtually planar. The angle between the two benzene rings is 4.06 (6)°. The intermolecular interactions present in the structure are weak. There are C—H...O hydrogen bonds and C—H...π-electron ring interactions. The molecules are ordered into planes that are parallel to (overline{1}01). The distance between adjacent planes is about 3.3 Å and therefore π–π electron interactions between the aromatic planes are also plausible.