Search results for "ODR"
showing 10 items of 434 documents
Albumin-driven disassembly of lipidic nanoparticles: the specific case of the squalene-adenosine nanodrug
2020
International audience; In the field of nanomedicine, nanostructured nanoparticles (NPs) made of self-assembling prodrugs emerged in the recent years with promising properties. In particular, squalene-based drug nanoparticles have already shown their efficiency through in vivo experiments. However, a complete pattern of their stability and interactions in the blood stream is still lacking. In this work we assess the behavior of squalene-adenosine (SQAd) nanoparticles-whose neuroprotective effect has already been demonstrated in murine models-in the presence of fetal bovine serum (FBS) and of bovine serum albumin (BSA), the main protein of blood plasma. Extensive physicochemical characteriza…
Święty Jacek w religijności ludowej i w kulturze polskiej
2020
Święty Jacek Odrowąż, dominikanin urodzony w Kamieniu Śląskim nieopodal Opola, kanonizowany w 1594 r. przez papieża Klemensa VIII, należy do najwybitniejszych postaci XIII wieku. Jest uważany za twórcę polskiej prowincji dominikanów za inicjatora powstania wielu klasztorów w Polsce, Prusach, Czechach (Znojnie, Igławie, Ołomuńcu, Pradze) i Austrii (we Friesach na pograniczu Styrii i Karyntii). Nazywany Apostołem Północnej Europy, Apostołem Słowian, Światłem Północy, Lux ex Silesiae (Światłem ze Śląska), prowadził misje ewangelizacyjne wśród ludów zamieszkujących dzisiejsze państwa bałtyckie oraz stepy nadczarnomorskie, także w Rusi Kijowskiej. Przedmiotem niniejszego artykułu jest próba omów…
Integrable Hamiltonian systems with swallowtails
2010
International audience; We consider two-degree-of-freedom integrable Hamiltonian systems with bifurcation diagrams containing swallowtail structures. The global properties of the action coordinates in such systems together with the parallel transport of the period lattice and corresponding quantum cells in the joint spectrum are described in detail. The relation to the concept of bidromy which was introduced in Sadovski´ı and Zhilinski´ı (2007 Ann. Phys. 322 164–200) is discussed.
Synthesis and biological evaluation of 4-nitro-substituted 1, 3-diaryltriazenes as a novel class of potent antitumor agents
2011
Abstract We describe the synthesis and biological activity of a new class of 1,3-diaryltriazenes, namely 4-nitro-substituted 1,3-diaryltriazenes. Structure–activity relationship analysis reveals that 1,3-diaryltriazenes can be modified from inactive to highly cytotoxic compounds by the introduction of two nitro groups at the para positions of benzene rings and two additional electron-withdrawing groups (bromo, chloro, trifluoromethyl or fluoro substituents) at their ortho position. In order to increase the solubility of the modified compounds, we introduced various acyl groups to their triazene nitrogen. The results of LC-MS/MS analysis showed that N -acyltriazenes can be considered as prod…
Structural studies of acyl esters of entacapone
2001
Abstract The crystal structures of entacapone [(E)-2-cyano-N,N-diethyl-3-(3,4-dihydroxy-5-nitrophenyl)propenamide] and three of its acyl esters were solved. Entacapone, and its monopivaloate and diacetate derivatives, exist in the E-form while its dibenzoate derivative adopts the Z-form in the crystalline state. The ethyl substituents of the E-form are not freely rotating, as demonstrated by the broad signals in the 1H and 13C NMR spectra. The rotation barrier for the E-form was defined by the crystal structures, which show that free rotation of the ethyl substituents is blocked by the cyano-group.
Roads, travelling and communication in the Polish – Lithuanian Commonwealth in the 18th century. Russian and West European visitors’ perspective
2020
W artykule przedstawiony został stan techniczny dróg lądowych i rzecznych, mostów, grobli oraz pozostałej infrastruktury komunikacyjnej w Polsce na podstawie relacji podróżników z zagranicy, w tym Rosjan. Stan oraz jakość lądowych i rzecznych środków transportu był oceniany przez cudzoziemców bardzo nisko, podobnie jak jakość usług oferowanych w przydrożnych karczmach w Polsce i na Litwie. W rezultacie podróżowanie w XVIII w. po Rzeczypospolitej mogło stanowić interesujące doświadczenie. Tak goście z Rosji, jak i z krajów zachodniej Europy natrafiali na wiele przeszkód w trakcie podróży, postrzegając przy tym kraj jako pełen paradoksów. Fatalny stan dróg, przerażające swoim standardem karcz…
Fabrication, characterization, thermal stability and nanoassemblies of novel pullulan-aspirin conjugates
2017
Abstract Present study deals with homogeneous and one-pot synthesis of novel macromolecular prodrugs (MPDs) of aspirin onto naturally occurring hydrophilic biopolymer pullulan. Pullulan-aspirin conjugates were synthesized by using green carboxylic acid activating reagent 1,1′-carbonyldiimidazole (CDI). The aspirin was first reacted with CDI to prepare aspirin-imidazolide at RT for 24 h which in situ reacted with pre-dissolved pullulan and the reaction preceded further for 24 h at 80 °C under nitrogen. Degree of substitution (DS 0.32–0.40) of aspirin onto pullulan was calculated from 1H NMR spectroscopy. Spectroscopic techniques confirmed the high covalent drug loading and purity. Thermal an…
SYNTHESIS, CHARACTERIZATION AND IN VITRO CYTOTOXICITY STUDIES OF A MACROMOLECULAR CONJUGATE OF PACLITAXEL BEARING OXYTOCIN AS TARGETING MOIETY.
2007
The present study describes the experimental synthetic procedure and the characterization of a new polyaspartamide macromolecular prodrug of paclitaxel, bearing oxytocin residues as targeting moieties. In vitro stability studies of bioconjugate, performed in media mimicking biological fluids (buffer solutions at pH 7.4 and 5.5) and in human plasma, evidenced the high stability of the targeting portion (oxytocin)-polymer linkage and the ability of this conjugate to release linked paclitaxel in a prolonged way in plasma. Moreover, preliminary in vitro antiproliferative studies, carried out on MCF-7 cells, that are oxytocin receptor positive cells, showed that the polymeric conjugate has the s…
Thymus x novocastellanus, nuevo tomillo híbrido para la flora ibérica
2001
Se describe un nuevo tomillo híbrido ibérico, Thymus x novocastellanus G. Mateo, M.B. Crespo & J.M. Pisco, producto del cruce entre Th. borgiae Rivas-Mart. & al. y Th. izcoi Rivas-Mart. & al., ambos pertenecientes a la sección Hyphodromi. A new hybrid thyme, Thymus x novocastellanus G. Mateo, M.B. Crespo & J.M. Pisco (Th. borgiae Rivas-Mart. & al. x Th. izcoi Rivas-Mart. & al.), which belongs to sect. Hyphodromi, is described from central-eastern Iberian Peninsula.
RILIEVI CINEMATICI IN NRTK PRESSO IL KARTODROMO DI TRISCINA (TP)
2012
Già da alcuni anni i ricercatori del DICAM hanno avviato programmi di ricerca rivolti ad indagare la implicazioni che hanno i tracciati cinematici nella determinazione della posizione, con particolare riferimento alle prove condotte sulle reti di stazioni permanenti presenti nel territorio siciliano. La situazione di queste reti GNSS per il tempo reale, infatti nella nostra regione è in continua trasformazione: cronologicamente, dal 2007 è stata messa a punto una rete privata gestita dalla C.G.T. di Palermo, chiamata VRS Sicilia, con strumentazione Trimble, costituita da 18 SP, inquadrata nel datum ETRF89, mentre nel 2008 è stata realizzata la rete di stazioni pubblica GNSS progettata e rea…