Towards a Combined Use of Geophysics and Remote Sensing Techniques for the Characterization of a Singular Building: "El Torreón" (the Tower) at Ulaca Oppidum (Solosancho, Ávila, Spain).

This research focuses on the study of the ruins of a large building known as "El Torreón" (the Tower), belonging to the Ulaca oppidum (Solosancho, Province of Ávila, Spain). Different remote sensing and geophysical approaches have been used to fulfil this objective, providing a better understanding of the building's functionality in this town, which belongs to the Late Iron Age (ca. 300-50 BCE). In this sense, the outer limits of the ruins have been identified using photogrammetry and convergent drone flights. An additional drone flight was conducted in the surrounding area to find additional data that could be used for more global interpretations. Magnetometry was used to analyze the underground bedrock structure and ground penetrating radar (GPR) was employed to evaluate the internal layout of the ruins. The combination of these digital methodologies (surface and underground) has provided a new perspective for the improved interpretation of "El Torreón" and its characteristics. Research of this type presents additional guidelines for better understanding of the role of this structure with regards to other buildings in the Ulaca oppidum. The results of these studies will additionally allow archaeologists to better plan future interventions while presenting new data that can be used for the interpretation of this archaeological complex on a larger scale.

Ir(III) Cyclometalated Complexes Containing Phenylphenanthridine Ligands with Different Substitutions: Effects on the Electrochemiluminescence Properties.

A family of neutral bis-cyclometalated Ir(III) complexes based on phenanthridine (phent) derivates as cyclometalating ligands and picolinate as an ancillary ligand are described. The influence of extended conjugation, rigidity, and hydrophobicity as well as the electronic nature of the substituents were investigated in relation to the photoluminescence, PL, and electrochemiluminescence, ECL, properties. A significant increase of ECL in aqueous media is observed upon extension of the aromatic system or by substituting the phenyl with a dibenzofurane moiety, in compounds 2 and 3, respectively. Under real immunoassay conditions, these complexes achieve up to 4-fold higher ECL efficiency than the commercial ruthenium standard. These values, among the highest reported in the literature under these conditions, confirm the potential of iridium complexes as alternative labels in commercial instruments.

Photophysics and Electrochemiluminescence of Bright Cyclometalated Ir(III) Complexes in Aqueous Solutions.

A family of neutral bis-cyclometalated iridium complexes [Ir(C^N)2(LX)] has been investigated as ECL labels under immunoassay conditions. Among them, the complex based on phenylphenanthridine (pphent) as the C^N ligand, exhibits outstanding performance and it is a candidate to substitute the commercially available Ru-based label in diagnostics.

White light-emitting electrochemical cells based on the Langmuir-Blodgett technique.

Light-emitting electrochemical cells (LECs) showing a white emission have been prepared with Langmuir-Blodgett (LB) films of the metallosurfactant bis[2-(2,4-difluorophenyl)pyridine][2-(1-hexadecyl-1H-1,2,3-triazol-4-yl)pyridine]iridium(III) chloride (1), which work with an air-stable Al electrode. They were prepared by depositing a LB film of 1 on top of a layer of poly(N,N'-diphenyl-N,N'-bis(4-hexylphenyl)-[1,1'-biphenyl]-4,4'-diamine (pTPD) spin-coated on indium tin oxide (ITO). The white color of the electroluminescence of the device contrasts with the blue color of the photoluminescence of 1 in solution and within the LB films. Furthermore, the crystal structure of 1 is reported together with the preparation and characterization of the Langmuir monolayers (π-A compression isotherms and Brewster angle microscopy (BAM)) and LB films of 1 (IR, UV-vis and emission spectroscopy, X-ray photoelectron spectroscopy (XPS), specular X-ray reflectivity (SXR), and atomic force microscopy (AFM)).

Iridium(III) emitters based on 1,4-disubstituted-1H-1,2,3-triazoles as cyclometalating ligand: synthesis, characterization, and electroluminescent devices.

A series of blue and blue-green emitters based on neutral bis- and tris-cyclometalated Ir(III) complexes with 1-benzyl-4-(2,6-difluorophenyl)-1H-1,2,3-triazole (dfptrBn) as cyclometalating ligand is reported. The bis-cyclometalated complexes of the type [Ir(dfptrBn)(2)(L(^)X)] with different ancillary ligands, L(^)X = picolinate (pic) (2) or 2-(5-(perfluorophenyl)-2H-1,2,4-triazol-3-yl)pyridine (pytrF(5)) (3), are described and their photophysical properties compared with the analogous complexes containing the archetypal 2-(2,4-difluorophenyl)pyridinato (dfppy) as cyclometaled ligand (C(^)N). Complex 2 exhibits a marked solvatochromic behavior, from 475 nm in toluene to 534 nm in formamide, due to the strong MLCT character of its emissive excited state. Complex 3 displays a true-blue emission, narrower in the visible part than FIrpic. In addition, the homoleptic complex [Ir(dfprBn)(3)] (4) and the heteroleptic compounds with mixed arylpyridine/aryltriazole ligands, [Ir(dfptrBn)(2)(C(^)N)] (C(^)N = 2-phenylpyridinato (ppy) (5) or dfppy (6)), have been synthesized and fully characterized. The facial (fac) complex fac-4 is emissive at 77 K showing a deep-blue emission, but it is not luminescent in solution at room temperature similarly to their phenylpyrazole counterparts. However, the fac isomers, fac-5 and fac-6, are highly emissive in solution and thin films, reaching emission quantum yields of 76%, with emission colors in the blue to blue-green region. The photophysical properties for all complexes have been rationalized by means of quantum-chemical calculations. In addition, we constructed electroluminescent devices, organic light-emitting diodes (OLEDs) by sublimation of fac-6, and by solution processed polymer-based devices (PLEDs) using complexes fac-5 or fac-6 as dopants.

Control of the mutual arrangement of cyclometalated ligands in cationic iridium(III) complexes. Synthesis, spectroscopy, and electroluminescence of the different isomers.

Synthetic control of the mutual arrangement of the cyclometalated ligands (C^N) in Ir(III) dimers, [Ir(C^N)(2)Cl](2), and cationic bis-cyclometalated Ir(III) complexes, [Ir(C^N)(2)(L^L)](+) (L^L = neutral ligand), is described for the first time. Using 1-benzyl-4-(2,4-difluorophenyl)-1H-1,2,3-triazole (HdfptrBz) as a cyclometalating ligand, two different Ir(III) dimers, [Ir(dfptrBz)(2)Cl](2), are synthesized depending on the reaction conditions. At 80 °C, the dimer with an unusual mutual cis-C,C and cis-N,N configuration of the C^N ligands is isolated. In contrast, at higher temperature (140 °C), the geometrical isomer with the common cis-C,C and trans-N,N arrangement of the C^N ligand is obtained. In both cases, an asymmetric bridge, formed by a chloro ligand and two adjacent nitrogens of the triazole ring of one of the cyclometalated ligands, is observed. The dimers are cleaved in coordinating solvents to give the solvento complexes [Ir(dfptrBz)(2)Cl(S)] (S = DMSO or acetonitrile), which maintain the C^N arrangement of the parent dimers. Controlling the C^N ligand arrangement in the dimers allows for the preparation of the first example of geometrical isomers of a cationic bis-cyclometalated Ir(III) complex. Thus, N,N-trans-[Ir(dfptrBz)(2)(dmbpy)](+) (dmbpy = 4,4'-dimethyl-2,2'-bipyridine), with cis-C,C and trans-N,N arrangement of the C^N ligands, as well as N,N-cis-[Ir(dfptrBz)(2)(dmbpy)](+), with cis-C,C and cis-N,N C^N ligand orientation, are synthesized and characterized. Interestingly, both isomers show significantly different photophysical and electroluminescent properties, depending on the mutual arrangement of the C^N ligands. Furthermore, quantum chemical calculations give insight into the observed photophysical experimental data.

Como escribir el resumen de un artículo científico en inglés / How to write the abstract of a scientific paper in english

Uno de los principales problemas en el desarrollo de la expresión escrita en inglés con enfoque en el género es la redacción del resumen sobre artículos o investigaciones científicas. Con el objetivo de actualizar los conocimientos existentes sobre este tema, se decidió realizar una revisión bibliográfica acerca de los elementos más importantes relacionados con este tipo de texto. En el trabajo se describen las modalidades de producción del texto-resumen, se analiza la relación existente entre las habilidades de lectura y escritura, la información textual, la información discursiva, el enfoque en el género, los distintos tipos de resúmenes y, en particular, los resúmenes de investigaciones médicas. Como resultado de la revisión realizada se propone el uso del modelo de resumen del lingüista holandés Teun A. Van Dijk por su eficacia en investigaciones sobre el tema que nos ocupa, realizadas por la mayoría de los autores consultados. Se concluye que los aspectos que deben utilizarse para la elaboración de resúmenes escritos en inglés son: las actividades o macrorreglas citadas por este autor, también denominadas operaciones resuntivas: Omitir, seleccionar, generalizar, construir o integrar así como el análisis lingüístico de los artículos de Investigación: longitud de los resúmenes, número de oraciones y longitud de las mismas, voz y tiempos verbales.

One of the main problems in developing writing skills in English with a Genre approach is to write an Abstract about articles or scientific researches. With the objective to update the knowledge about this theme it was decided to do a bibliographical revision about the most important elements related to this kind of text. In this paper is described the ways of production of the abstract text, it is also analyzed the relation between reading and writing skills, the text information, the discourse information, the genre approach and the different kinds of abstracts, basically medical researches. As a result of the revision done it is suggested to use the model stated by the dutch linguist Teun A. Van Dijk due to its efficacy in researches done by most of the authors consulted in articles and books about this theme. It is concluded that the aspects that should be taken into consideration to write an abstract in english are: the activities or macrorules, also called resunctive operations: elliciting, selecting, generalizing, constructing or integrating, as well as the linguistic analysis of the research articles: length of the abstracts, number and length of statements used, voice and verbal tenses.

Como escribir el resumen de un artículo científico en inglés / How to write the abstract of a scientific paper in english

Uno de los principales problemas en el desarrollo de la expresión escrita en inglés con enfoque en el género es la redacción del resumen sobre artículos o investigaciones científicas. Con el objetivo de actualizar los conocimientos existentes sobre este tema, se decidió realizar una revisión bibliográfica acerca de los elementos más importantes relacionados con este tipo de texto. En el trabajo se describen las modalidades de producción del texto-resumen, se analiza la relación existente entre las habilidades de lectura y escritura, la información textual, la información discursiva, el enfoque en el género, los distintos tipos de resúmenes y, en particular, los resúmenes de investigaciones médicas. Como resultado de la revisión realizada se propone el uso del modelo de resumen del lingüista holandés Teun A. Van Dijk por su eficacia en investigaciones sobre el tema que nos ocupa, realizadas por la mayoría de los autores consultados. Se concluye que los aspectos que deben utilizarse para la elaboración de resúmenes escritos en inglés son: las actividades o macrorreglas citadas por este autor, también denominadas operaciones resuntivas: Omitir, seleccionar, generalizar, construir o integrar así como el análisis lingüístico de los artículos de Investigación: longitud de los resúmenes, número de oraciones y longitud de las mismas, voz y tiempos verbales(AU)

One of the main problems in developing writing skills in English with a Genre approach is to write an Abstract about articles or scientific researches. With the objective to update the knowledge about this theme it was decided to do a bibliographical revision about the most important elements related to this kind of text. In this paper is described the ways of production of the abstract text, it is also analyzed the relation between reading and writing skills, the text information, the discourse information, the genre approach and the different kinds of abstracts, basically medical researches. As a result of the revision done it is suggested to use the model stated by the dutch linguist Teun A. Van Dijk due to its efficacy in researches done by most of the authors consulted in articles and books about this theme. It is concluded that the aspects that should be taken into consideration to write an abstract in english are: the activities or macrorules, also called resunctive operations: elliciting, selecting, generalizing, constructing or integrating, as well as the linguistic analysis of the research articles: length of the abstracts, number and length of statements used, voice and verbal tenses(AU)

An unprecedented process involving normal and redox transmetallation reactions between Hg and Pt affording the unexpected K[Pt2[CH2C(O)Me]6(mu-Cl)3] complex: the key role of X-ray powder diffraction in unravelling its nature and structure.

[Hg{CH2C(O)Me}2] reacts with K[PtCl3(CH2=CH2)](2 : 1 molar ratio) to give K[Pt2{CH2C(O)Me}6(mu-Cl)3] (1); the intermediate [Pt{CH2C(O)Me}Cl2(CH2=CH2)]- has been detected in solution and isolated as a Me4N+ salt; the process occurs through successive normal and redox transmetallation reactions and an ab initio X-ray powder diffraction study of has proven to be essential to establish its nature.