139 research outputs found
Ciudad vertical, ciudades periféricas
Con la propuesta se plantea repensar y reconfigurar las plazas (dejando la función aunque no la forma), de manera que se produzca una conexión más fluida entre diagonal 74 y Av 1, permitiendo con el soterramiento del tren y que Av 1 sea de doble mano.
Se prioriza la peatonalización del sector y un parque que remata en la propuesta de ciudad vertical que genera tensión con la torre de Av 1 y calle 54, "el mirador del bosque" actualmente el edificio residencial más alto con 20 plantas.Facultad de Arquitectura y Urbanism
Mild Iridium-Catalysed Isomerization of Epoxides. Computational Insights and Application to the Synthesis of β-Alkyl Amines
In the presence of 3-5 mol% Crabtree's catalyst or the corresponding tetrakis[3,5-bis(trifluoromethyl)phenyl]borate salt (Cy3P)Ir+(pyridine)(1,5-cyclooctadiene)·X- {X = PF6, [3,5-(F3C)2C6H3]4B}, aryl 1,1-disubstituted epoxides such as α-methylstyrene oxide underwent chemoselective isomerization to aldehydes; treatment with benzhydrylamine and pyrrolidine and redn. with NaBH4 yielded 2,2-disubstituted amines such as PhCHMeCH2NHR [R = Ph2CH, 4-MeOC6H4, PhCH2, (R)-PhCHMe] in one pot. DFT calcns. were performed to rationalize the obsd. selectivity
Feasibility and short-term outcomes in liver-first approach: a Spanish snapshot study (the RENACI Project)
(1) Background: The liver-first approach may be indicated for colorectal cancer patients with synchronous liver metastases to whom preoperative chemotherapy opens a potential window in which liver resection may be undertaken. This study aims to present the data of feasibility and short-term outcomes in the liver-first approach. (2) Methods: A prospective observational study was performed in Spanish hospitals that had a medium/high-volume of HPB surgeries from 1 June 2019 to 31 August 2020. (3) Results: In total, 40 hospitals participated, including a total of 2288 hepatectomies, 1350 for colorectal liver metastases, 150 of them (11.1%) using the liver-first approach, 63 (42.0%) in hospitals performing <50 hepatectomies/year. The proportion of patients as ASA III was significantly higher in centers performing ≥50 hepatectomies/year (difference: 18.9%; p = 0.0213). In 81.1% of the cases, the primary tumor was in the rectum or sigmoid colon. In total, 40% of the patients underwent major hepatectomies. The surgical approach was open surgery in 87 (58.0%) patients. Resection margins were R0 in 78.5% of the patients. In total, 40 (26.7%) patients had complications after the liver resection and 36 (27.3%) had complications after the primary resection. One-hundred and thirty-two (89.3%) patients completed the therapeutic regime. (4) Conclusions: There were no differences in the surgical outcomes between the centers performing <50 and ≥50 hepatectomies/year. Further analysis evaluating factors associated with clinical outcomes and determining the best candidates for this approach will be subsequently conducted
Amino acid substitutions associated with treatment failure of hepatitis C virus infection
Trabajo presentado en el XVI Congreso Nacional de Virología, celebrado en Málaga (España) del 06 al 09 de septiembre de 2022.Despite the high sustained virological response rates achieved with current directly-acting antiviral agents (DAAs) against hepatitis C virus (HCV), around 2% to 5% of patients do not achieve such a response. Identification of amino acid substitutions associated with treatment failure requires analytical designs, such as subtype-specific ultra-deep sequencing (UDS) methods for HCV characterization and patient management. By deep sequencing analysis of 220 subtyped HCV samples from infected patients who failed therapy, collected from 39 Spanish hospitals, we determined amino acid sequences of the DAA-target proteins NS3, NS5A and NS5B, by UDS of HCV patient samples, in search of resistanceassociated substitutions (RAS). Using this procedure, we have identified six highly represented amino acid substitutions (HRSs) in NS5A and NS5B of HCV, which are not bona fide RAS. They were present frequently in basal and post-treatment virus of patients who failed therapy to different DAA-based therapies. Contrary to several RAS, HRSs belong to the acceptable subset of substitutions according to the PAM250 replacement matrix. Coherently, their mutant frequency, measured by the number of deep sequencing reads within the HCV quasispecies that encode the relevant substitutions, ranged between 90% and 100% in most cases. Also, they have limited predicted disruptive effects on the threedimensional structures of the proteins harboring them. The information on HRSs that will be gathered during sequencing should be relevant not only to help predict treatment outcomes and disease progression but also to further understand HCV population dynamics, which appears much more complex than thought prior to the introduction of deep sequencing.The work at CBMSO was supported by grants SAF2014-52400-R from MINECO, SAF2017-87846-R and BFU2017-91384-EXP MICIU, PI18/00210 from ISCIII, S2013/ABI-2906 (PLATESA) and S2018/BAA-4370 (PLATESA2) from Comunidad de Madrid/FEDER. C.P. is supported by the Miguel Servet program of the ISCIII (CP14/00121 and CPII19/00001), cofinanced by the European Regional Development Fund (ERDF). CIBERehd is funded by ISCIII. Institutional grants from the Fundación Ramón Areces and Banco Santander to the CBMSO are also acknowledged. The team at CBMSO belongs to the Global Virus Network (GVN). The work in Barcelona was supported by ISCIII, cofinanced by ERDF grant number PI19/00301 and by the Centro para el Desarrollo Tecnológico Industrial (CDTI) from the MICIU, grant number IDI20151125. Work at CAB was supported by MINECO grant BIO2016-79618R and PID2019-104903RB-I00 (funded by the EU under the FEDER program) and by the Spanish State research agency (AEI) through project number MDM-2017-0737 Unidad de Excelencia “María de Maeztu”-Centro de Astrobiología (CSIC-INTA). Work at IBMB was supported by MICIN grant BIO2017-83906-P (funded by the EU under the FEDER program). C.G.-C. is supported by predoctoral contract PRE2018-083422 from MICIU. B.M.-G. is supported by predoctoral contract PFIS FI19/00119 from Instituto de Salud Carlos III (Ministerio de Sanidad y Consumo), cofinanced by Fondo Social Europeo (FSE).Peer reviewe
Towards a life cycle sustainability assessment method for the quantification and reduction of impacts of buildings life cycle
The construction and building sectorsare one of the highestconsumersof resourcesand energy. Literature evidences the potentialities of the design phase towardsthe improvement of environmental, economic and social performance of buildings. Thus, the Life Cycle Sustainability Assessment (LCSA) approach is
recognized as suitable method. It isbased on the “triple bottom line”principle, to calculate environmental, economic, social impacts produced by buildings during itslife cycle. The present paper aims to present
a methodological framework based on anLCSA, used during design stages of buildings and integrated into a building’s design technology such as Building Information Modeling (BIM). A conceptual approach to conduct
the data integration and a possible workflow to integrate the LCSA into BIMis proposed. The value of the present approach is the possibility to conductquantitative environmental, economic and social assessment
of buildings to guide designers to measure and predict the building’s performanc
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