Search results for "44"
showing 10 items of 1507 documents
Novel Lipophilic Lanthanide Bis-Phthalocyanines Functionalized by Pentadecylphenoxy Groups: Synthesis, Characterization and UV-Photostability
2012
Novel sandwich-type phthalocyanines containing a rare earth metal core (Pr, Nd, Eu-Lu) and macrocycles peripherally substituted by pentadecylphenoxy groups were synthesized using a cardanol-based phthalonitrile precursor and the respective lanthanide acetate. Additionally, the metal free-base analog compound was studied for comparison. The purified reaction products were all found to be thick and viscous substances at room temperature, showing liquid crystalline behavior with a distinct increase in fluidity at ca. 40 ° C. The complexes are readily soluble in chloroalkyl solvents and dissolve fairly well in DMF with some tendency to form aggregates. Besides they are strongly hydrophobic and …
Hydrogen bond-mediated conjugates involving lanthanide diphthalocyanines and trifluoroacetic acid (Lnpc2@TFA): Structure, photoactivity, and stability
2020
The interaction between lanthanide diphthalocyanine complexes, LnPc2 (Ln = Nd, Sm, Eu, Gd, Yb, Lu
Assessment of Five Monazite Reference Materials for U-Th/Pb Dating Using Laser-Ablation ICP-MS
2019
Monazite is a common accessory phosphate mineral that occurs under a wide range of pressure and temperature conditions in sedimentary, metamorphic and igneous rocks. Monazite contains high amounts of Th and U, rendering single monazite grains suitable for in-situ U-Th/Pb dating using laser ablation inductively-coupled mass spectrometry (LA-ICP-MS). Two key aspects of monazite dating that are critical for accurate age data with maximum precision are (i) optimized instrumental conditions to minimize analytical scatter and (ii) a well characterized reference material to ensure the accuracy of the obtained aged. Here, we analyzed five monazite reference materials (USGS 44069, 94-222, MAdel, Moa…
Universitātes Avīze: 2000, janvāris-jūnijs (Nr. 7-15), septembris-decembris (1-9)
2000
Proyección interna y extraterritorial de una familia valenciana al servicio de la Monatquía. La saga jurídica de los Sisternes
2018
Chemical Composition of Two Different Lavender Essential Oils and Their Effect on Facial Skin Microbiota
2019
Lavender oil is one of the most valuable aromatherapy oils, its anti-bacterial and anti-fungal activities can be explained by main components such as linalool, linalyl acetate, lavandulol, geraniol, or eucalyptol. The aim of the study was to assess the anti-microbial effects of two different lavender oils on a mixed microbiota from facial skin. The commercial lavender oil and essential lavender oil from the Crimean Peninsula, whose chemical composition and activity are yet to be published, were used. Both oils were analysed by gas chromatography coupled to mass spectrometry. The composition and properties of studied oils were significantly different. The commercial ETJA lavender oil contain…
Visible-light photoredox catalyzed synthesis of pyrroloisoquinolines via organocatalytic oxidation/[3 + 2] cycloaddition/oxidative aromatization reac…
2014
Beilstein journal of organic chemistry 10, 1233-1238 (2014). doi:10.3762/bjoc.10.122
Fame. Espressioni, esperienze, esperimenti nel Moderno
2008
Dire la fame. "Se questo è un uomo" e altre esperienze (meta)linguistiche del Moderno
2009
La dirección orquestal y su dimensión social: hacia la inclusión de la mujer
2022
Por influencia de las teorías freudianas suele decirse que, en el contexto de una orquesta, la batuta representa la virilidad, al ser un elemento usado única y exclusivamente por quien ostenta el liderazgo de aquella. El director, batuta en mano, se transforma en un mediador entre el conjunto musical, la obra y el público. Sin embargo, esta analogía únicamente funciona a nivel de recepción musical y social cuando estamos ante un líder varón. El presente artículo analiza con perspectiva de género el rol del director de orquesta partiendo de su origen, como figura que surge en el siglo XIX y evoluciona hasta la actualidad. En concreto se exponen los resultados de una investigación cuyo objeti…