Search results for "Ull"
showing 10 items of 3152 documents
Do you know what you are reading for? Exploring the effects of a task model enhancement on fifth graders' purposeful reading
2021
International audience; Background: Drawing on theories of purposeful reading, this study explored task conditions that support fifth graders' selective reading of documents in order to answer questions. More specifically, we investigated whether promoting students' elaboration of their task model increases task performance. Methods: Participants had to answer series of questions by searching documents for the relevant information. Half the participants received a task model prompt, and half received a control prompt. Participants' eye movements were recorded during text search, in order to investigate more precisely the effect of an enhanced task model. Results: Participants provided more …
Endohedral Mixed Aggregates: Sodium Alkoxide Cages with Organic or Inorganic Central Anions and Variable Hull.
2021
Abstract Alkali metal alkoxides are widely used in chemistry due to their Brønsted basic and nucleophilic properties. Potassium alkoxides assist alkyllithium in the metalation of hydrocarbons in Lochmann‐Schlosser‐bases. Both compounds form mixed aggregates, which enhance the thermal stability, solubility, and the basic reactivity of these mixtures. A very unusual spherical mixed alkoxy aggregate was discovered by Grützmacher et al., where a central dihydrogen phosphide anion is surrounded by a highly dynamic shell of thirteen sodium atoms and a hull of twelve tert‐butoxide groups. This structural motif can be reproduced by a reaction of trimethylsilyl compounds of methane, halogens, or pse…
Acid‐Cleavable Poly(ethylene glycol) Hydrogels Displaying Protein Release at pH 5
2020
Abstract PEG is the gold standard polymer for pharmaceutical applications, however it lacks degradability. Degradation under physiologically relevant pH as present in endolysosomes, cancerous and inflammatory tissues is crucial for many areas. The authors present anionic ring‐opening copolymerization of ethylene oxide with 3,4‐epoxy‐1‐butene (EPB) and subsequent modification to introduce acid‐degradable vinyl ether groups as well as methacrylate (MA) units, enabling radical cross‐linking. Copolymers with different molar ratios of EPB, molecular weights (M n) up to 10 000 g mol−1 and narrow dispersities (Đ<1.05) were prepared. Both the P(EG‐co‐isoEPB)MA copolymer and the hydrogels showed pH‐…
Synthesis, Thermal, and Optical Properties of Tris(5‐aryl‐1,3,4‐oxadiazol‐2‐yl)‐1,3,5‐triazines, New Star‐Shaped Fluorescent Discotic Liquid Crystals
2019
Abstract The synthesis of tris(aryloxadiazolyl)triazines (TOTs), C 3‐symmetrical star‐shaped mesogenes with a 1,3,5‐triazine center, 5‐phenyl‐1,3,4‐oxadiazole arms, and various peripheral alkoxy side chains is reported. Threefold Huisgen reaction on a central triazine tricarboxylic acid and suitable aryltetrazoles yields the title compounds. Selected analogues with a benzene center are included in this study and allow for an evaluation of the impact of the central unit on the physical properties. Thermal (differential scanning calorimetry, DSC; polarization optical microscopy, POM), optical (UV/Vis, fluorescence), electric (time of flight, TOF), and structural (single crystal; wide‐angle X‐…
Bernoulli effect
2010
Descripción del mecanismo mediante el cual las cuerdas vocales producen los sonidos vocálicos y consonánticos que escuchamos Explanation of the mechanism by which the vocal folds produce the sounds we hear in vowel and voiced consonant.
Nullità sopravvenuta (una breve riflessione propositiva)
2022
Il contributo ha ad oggetto una riflessione propositiva sulla cosiddetta nullità sopravvenuta, valorizzando nei contratti ad efficacia non ancora esaurita la vigenza della fonte. Da ciò può dedursi che in ogni momento e fase dinamica del contratto sia implicito un costante ancoraggio alla sua giustificazione, che imporrebbe una reiterazione del giudizio di validità. Così che per i casi nei quali il contratto si ponga in un secondo momento in contrasto con regole di validità poste dall’ordinamento per effetto di una circostanza successiva alla sua formazione, pur in senso diacronico (rispetto all’origine), sia ravvisabile una ipotesi di nullità successiva
La negociación colectiva de empresa por representantes de base unitaria: el principio de correspondencia como límite jurisprudencial. Comentario a la…
2016
La Sentencia que ocupará las siguientes páginas aborda la legalidad de un convenio de empresa suscrito por un delegado de personal pero cuyo ámbito funcional pretende extenderse a la totalidad de la empresa. Impugnado el convenio por una Federación Sindical, la cual pretende que las condiciones de los trabajadores se sigan rigiendo por el convenio sectorial aplicable, la AN estima la pretensión de la parte actora, aplicando el principio de correspondencia. The Court ruling that we are analyzing decides the legality of an enterprise agreement signed by an elected representative, but whose functional scope intended to extend to the entire company. Challenged the agreement by Federation ofTrad…
Análisis jurisprudencial de la legitimación pasiva de las entidades financieras en las reclamaciones realizadas por consumidores derivadas de una com…
2021
Consumers, who acquired real estate through a deed of sale with a mortgage subrogation, have made numerous claims against the financial entities. They request the nullity of the clause that imposes upon them all the expenses cause by the notarial deed. Financial entities have alleged that they do not have the capacity to be sued. Courts decisions have been diverse.
Derecho de acceso a la información : el desafío de una sociedad guiada por la transparencia en el ordenamiento jurídico español
2021
This study will address the two aspects of rights linked to information, the right to information and the right to information, to end with the formulation of some conclusions that, distancing themselves from a mere summary, seek to encourage doctrinal and political debate on assumptions that, being peacefully settled, should be reformulated in light of the repeated crisis of transparency. For this, it will be articulated by addressing, first, the most significant aspects of the right to information and its link with the right to freedom of expression, as well as the new challenges that these rights face in the digital age, to then analyze the right to information, its regulation in the Spa…
Semantically-enhanced advertisement recommender systems in social networks
2016
El suministro de recomendaciones en los sistemas sociales lleva ya algún tiempo en el punto de mira tanto de los académicos como de la industria. Los gigantes de las redes sociales como Facebook, LinkedIn, Myspace, etc., están ansiosos por encontrar la bala de plata de la recomendación. Estas aplicaciones permiten a los clientes dar forma a unas determinadas redes sociales a través de sus comunicaciones sociales cooperativas cotidianas. Mientras tanto, la experiencia online actual depende progresivamente de la asociación social. Una de las principales preocupaciones en la red social es establecer un plan de negocio exitoso para obtener más beneficios de la red social. Hacer un negocio en ca…