Nickel(II) complexes based on L-amino-acid-derived ligands: Synthesis, characterization and study of the role of the supramolecular structure in carbon dioxide capture

The formation of the symmetrical 3-carbonate-bridged self-assembled trinuclear NiII complex Na2{[Ni(LO)2(H2O)]3(3-CO3)} (LO is the carboxylate anion of a l-tyrosine derivative), involves atmospheric CO2 uptake. The asymmetric unit of the complex comprises an octahedral coordination for the NiII with two l-tyrosine-based ligands, a water molecule and one O atom of the carbonate bridge. The Ni3–3-CO3 core in this compound is the first reported of this kind according to the Cambridge Structural Database (CSD). The supramolecular structure is mainly sustained by hydrogen bonds developed by the phenolic functionality of the l-tyrosine moiety of one ligand and the carboxylate group of a neighbouring ligand. The crystal packing is then characterized by three interpenetrated supramolecular helices associated with a diastereoisomer of the type RsupP, which is essential for the assembly process. Magnetic susceptibility and magnetization data support weak ferromagnetic exchange interactions within the novel Ni3–3-CO3 core. The NiII complex obtained under the same synthetic conditions but using the analogous ligand derived from the amino acid l-phenylalanine instead of l-tyrosine gives rise to to a mononuclear octahedral system. The results obtained for the different complexes demonstrate the role of the supramolecular structure regarding the CO2 uptake property for these NiII–amino-acid-based systems.Fil: Rivas Marquina, Andrea Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Movilla, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Sanchez Montilva, Olga Carolina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Rentschler, Eva. Universidad de Mainz; AlemaniaFil: Carrella, Luca. Universidad de Mainz; AlemaniaFil: Alborés, Pablo. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Di Salvo, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentin

The Grizzly, September 18, 2008

How Safe do You Feel?: Campus Discussion About Safety • Jersey in July: Not Just Another Day at the Beach for Some • Studies Suggest Nicotine Addiction Linked to Gene Mutation • Harry Potter: The Boy Who Brought Lawsuits? • Motion with Emotion: Professional Dancer Ruth Andrian Arrives at UC • Ursinus Kicks Off This Year\u27s International Film Festival • Opinions: Democrat\u27s Perspective on Potential VP Sarah Palin; Barack Obama: The Only Right Choice for U.S. President • Volleyball Vamps Up for First Victorious Season in Years • UC Field Hockey Prepares to Restore Remarkable Reputationhttps://digitalcommons.ursinus.edu/grizzlynews/1768/thumbnail.jp

The Grizzly, October 23, 2008

Professors\u27 Performance to Jazz Up Your Friday Night • Cafe Nia Event Brings Spirit of Poetry to Homecoming • Active Minds to Spread Mental Health Awareness at UC • Safe to Use Internet to Play Doctor? • UC Popularity Growing Steadily • Stand Up: STAND Rallies Ursinus Students for Darfur • Another Night of Artistry in Philadelphia • Omega Chi Blood Drive Takes the UC Campus by Storm, Highest Turnout Yet • Alpha Paintball Company: Fun for the Whole Family • Assassins Players Still on the Lookout • Opinions: GSA Members Call for Respect; Breakaway Presents Ten Minute Play Festival, Take Two • Senior Spotlight: Lisa Clark, Senior Women\u27s Soccer Playerhttps://digitalcommons.ursinus.edu/grizzlynews/1772/thumbnail.jp

The Grizzly, November 20, 2008

Adding Machine Makes Explosive Debut on UC Campus • Active Minds Encourages Students to Relax: Stop Stressing! • Creative Writing Author John Holman Visits UC Students • Is the Economy Affecting Your Waistline? • More Bailout News: AIG • Inside the Busy Life of Senior Laura Ng • Plummer Speaks About Importance of Election • Ottinger Fights Child Illiteracy in Cold • Play n Trade: New Store for Gamers • Letter to the Editor • Sunny Review • Dracula\u27s Ball Recap: Ideal Halloween Destination • Hockey Prepares for On-Campus Nationals This Weekendhttps://digitalcommons.ursinus.edu/grizzlynews/1776/thumbnail.jp

Dense matter with eXTP

In this White Paper we present the potential of the Enhanced X-ray Timing and Polarimetry (eXTP) mission for determining the nature of dense matter; neutron star cores host an extreme density regime which cannot be replicated in a terrestrial laboratory. The tightest statistical constraints on the dense matter equation of state will come from pulse profile modelling of accretion-powered pulsars, burst oscillation sources, and rotation-powered pulsars. Additional constraints will derive from spin measurements, burst spectra, and properties of the accretion flows in the vicinity of the neutron star. Under development by an international Consortium led by the Institute of High Energy Physics of the Chinese Academy of Science, the eXTP mission is expected to be launched in the mid 2020s.Comment: Accepted for publication on Sci. China Phys. Mech. Astron. (2019

ASTRI Mini-Array Top Level Software Architecture

This document provides a comprehensive architectural overview of the ASTRI Mini-Array Software system (a.k.a MA Software or MA Software System), which manages observing projects, observation handling, array control and monitoring, data acquisition, archiving, processing and simulations of the Cherenkov and Intensity Interferometry observations, including science tools for the scientific exploitation of the ASTRI MA data. This document, using a number of different views, depicts different aspects of the Mini-Array software and describes the significant architectural decisions

(Re)visitando a la madre (des)naturalizada : búsquedas y encuentros entre personas adoptadas en Chile y sus madres de origen

Este artículo es resultado de los proyectos FONDECYT N°3170338 "Adopciones en Chile: la construcción de narrativas sobre los orígenes y la identidad", REDI170133 "Investigación Interdisciplinaria sobre Políticas Reproductivas y Parentales", Programa Coope-ración Internacional (PCI), ambos financiados por la Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) de Chile; y del Proyecto I+D CSO2015-64551-C3-1-R "Del control de la natalidad a la ansiedad demográfica: comunicación, secreto y anonimato en las tecnologías reproductivas del siglo XXI", MINECO/FEDER.En este artículo se presentan algunos resultados de una investigación cualitativa que explora y analiza las narrativas de un grupo de personas adultas que fueron adoptadas en Chile, que han buscado sus orígenes y que han establecido contacto con sus madres de origen. En sus narrativas, las personas entrevistadas adhieren, tensionan y/o desafían los principios y discursos que conforman las políticas y prácticas adoptivas hegemónicas, resignificando de formas diversas su experiencia de adopción en el proceso de (re)construcción de sus identidades y de reorganización de sus relaciones de parentesco. Se discuten las tensiones y ambivalencias que se juegan en los procesos de búsquedas de orígenes y los desafíos asociados.This paper presents some results of a qualitative research that explores and analyzes the narratives of a group of adults who were adopted in Chile, and who have searched for their origins and made contact with their birth mothers. In their narratives, the people interviewed adhere to, strain, and/or challenge the principles and discourses that make up hegemonic adoption policies and practices, resignifying their experience of adoption in various ways, as they (re)build their identities and reorganize their kinship relationships. It discusses the tensions and ambivalences that play out in the search for origins and the challenges associated with it

Quality control of B-lines analysis in stress Echo 2020

Background The effectiveness trial “Stress echo (SE) 2020” evaluates novel applications of SE in and beyond coronary artery disease. The core protocol also includes 4-site simplified scan of B-lines by lung ultrasound, useful to assess pulmonary congestion. Purpose To provide web-based upstream quality control and harmonization of B-lines reading criteria. Methods 60 readers (all previously accredited for regional wall motion, 53 B-lines naive) from 52 centers of 16 countries of SE 2020 network read a set of 20 lung ultrasound video-clips selected by the Pisa lab serving as reference standard, after taking an obligatory web-based learning 2-h module ( http://se2020.altervista.org ). Each test clip was scored for B-lines from 0 (black lung, A-lines, no B-lines) to 10 (white lung, coalescing B-lines). The diagnostic gold standard was the concordant assessment of two experienced readers of the Pisa lab. The answer of the reader was considered correct if concordant with reference standard reading ±1 (for instance, reference standard reading of 5 B-lines; correct answer 4, 5, or 6). The a priori determined pass threshold was 18/20 (≥ 90%) with R value (intra-class correlation coefficient) between reference standard and recruiting center) > 0.90. Inter-observer agreement was assessed with intra-class correlation coefficient statistics. Results All 60 readers were successfully accredited: 26 (43%) on first, 24 (40%) on second, and 10 (17%) on third attempt. The average diagnostic accuracy of the 60 accredited readers was 95%, with R value of 0.95 compared to reference standard reading. The 53 B-lines naive scored similarly to the 7 B-lines expert on first attempt (90 versus 95%, p = NS). Compared to the step-1 of quality control for regional wall motion abnormalities, the mean reading time per attempt was shorter (17 ± 3 vs 29 ± 12 min, p < .01), the first attempt success rate was higher (43 vs 28%, p < 0.01), and the drop-out of readers smaller (0 vs 28%, p < .01). Conclusions Web-based learning is highly effective for teaching and harmonizing B-lines reading. Echocardiographers without previous experience with B-lines learn quickly.info:eu-repo/semantics/publishedVersio

Goodbye Hartmann trial: a prospective, international, multicenter, observational study on the current use of a surgical procedure developed a century ago

Background: Literature suggests colonic resection and primary anastomosis (RPA) instead of Hartmann's procedure (HP) for the treatment of left-sided colonic emergencies. We aim to evaluate the surgical options globally used to treat patients with acute left-sided colonic emergencies and the factors that leading to the choice of treatment, comparing HP and RPA. Methods: This is a prospective, international, multicenter, observational study registered on ClinicalTrials.gov. A total 1215 patients with left-sided colonic emergencies who required surgery were included from 204 centers during the period of March 1, 2020, to May 31, 2020. with a 1-year follow-up. Results: 564 patients (43.1%) were females. The mean age was 65.9 ± 15.6&nbsp;years. HP was performed in 697 (57.3%) patients and RPA in 384 (31.6%) cases. Complicated acute diverticulitis was the most common cause of left-sided colonic emergencies (40.2%), followed by colorectal malignancy (36.6%). Severe complications (Clavien-Dindo ≥ 3b) were higher in the HP group (P &lt; 0.001). 30-day mortality was higher in HP patients (13.7%), especially in case of bowel perforation and diffused peritonitis. 1-year follow-up showed no differences on ostomy reversal rate between HP and RPA. (P = 0.127). A backward likelihood logistic regression model showed that RPA was preferred in younger patients, having low ASA score (≤ 3), in case of large bowel obstruction, absence of colonic ischemia, longer time from admission to surgery, operating early at the day working hours, by a surgeon who performed more than 50 colorectal resections. Conclusions: After 100&nbsp;years since the first Hartmann's procedure, HP remains the most common treatment for left-sided colorectal emergencies. Treatment's choice depends on patient characteristics, the time of surgery and the experience of the surgeon. RPA should be considered as the gold standard for surgery, with HP being an exception

La renovación de la palabra en el bicentenario de la Argentina : los colores de la mirada lingüística

El libro reúne trabajos en los que se exponen resultados de investigaciones presentadas por investigadores de Argentina, Chile, Brasil, España, Italia y Alemania en el XII Congreso de la Sociedad Argentina de Lingüística (SAL), Bicentenario: la renovación de la palabra, realizado en Mendoza, Argentina, entre el 6 y el 9 de abril de 2010. Las temáticas abordadas en los 167 capítulos muestran las grandes líneas de investigación que se desarrollan fundamentalmente en nuestro país, pero también en los otros países mencionados arriba, y señalan además las áreas que recién se inician, con poca tradición en nuestro país y que deberían fomentarse. Los trabajos aquí publicados se enmarcan dentro de las siguientes disciplinas y/o campos de investigación: Fonología, Sintaxis, Semántica y Pragmática, Lingüística Cognitiva, Análisis del Discurso, Psicolingüística, Adquisición de la Lengua, Sociolingüística y Dialectología, Didáctica de la lengua, Lingüística Aplicada, Lingüística Computacional, Historia de la Lengua y la Lingüística, Lenguas Aborígenes, Filosofía del Lenguaje, Lexicología y Terminología