C and O isotopes of the Riópar Non-Sulfide Zn Ores (Albacete, SE Spain)

Depto. de Mineralogía y PetrologíaFac. de Ciencias GeológicasFALSEEspaña. Ministerio de Economía y Competitividadpu

Redes de colaboração empresarial para PMEs: uma revisão do estado da arte

According to data from the Bogotá Chamber of Commerce, as of 2019 there has been an increase in the number of companies that have canceled their operations. Despite a slight recovery at the beginning of 2020, the economic and social crisis unleashed by the COVID-19 (SARS-CoV-2) pandemic has been relentless with the local business community and has mainly affected the SME sector. District unemployment rates reached 16.3% at the end of 2020 and the contraction in local GDP approached 6.4%. As an alternative to increase competitiveness and innovation in SMEs, as well as an option for their survival in times of crisis, the collaborative platform strategy has been worked on and implemented in the last two decades around the world. The concept of business collaboration is associated with the economic resilience of human organizations by proposing innovative practices and mobilizing resources in response to existing difficulties and challenges. In this sense, the purpose of this article is to review the state of the art of business collaboration networks, exposing its main characteristics, the phases of its implementation, its formulation, analysis methods and practical applications, with the purpose of exposing the convenience, scope and possible limitations of this strategy as an option for local SMEs to mitigate their growing closure with the economic and social impacts that this implies.Según datos de la Cámara de Comercio de Bogotá a partir de 2019 se ha visto un incremento en el número de empresas que han cancelado sus operaciones. A pesar de una ligera recuperación a principios de 2020, la crisis económica y social desatada por la pandemia de la COVID-19 (SARS-CoV-2) ha sido implacable con el empresariado local y ha afectado principalmente al sector de las pymes. Las tasas de desempleo distrital llegaron al 16,3 % a finales de 2020 y la retracción del PIB local se acercó al 6,4 %. Como alternativa para el incremento de la competitividad y la innovación en las pymes, así como opción para su supervivencia en tiempos de crisis, en las últimas dos décadas alrededor del mundo se ha trabajado e implementado la estrategia de las plataformas colaborativas. El concepto de colaboración empresarial se asocia con la resiliencia económica de las organizaciones humanas al proponer prácticas innovadoras y movilización de recursos en respuesta a las dificultades y retos existentes. En este sentido el presente artículo tiene como propósito hacer una revisión al estado del arte de las redes de colaboración empresarial, exponiendo sus principales características, las fases de su implementación, su formulación, métodos de análisis y aplicaciones prácticas, con el propósito de exponer la conveniencia, alcance y posibles limitaciones de esta estrategia como opción para las pymes locales que permita mitigar su creciente cierre con los impactos económicos y sociales que esto implica. Palabras clave: redes de colaboración, pymes, innovación, crisisSegundo dados da Câmara de Comércio de Bogotá, a partir de 2019 houve um aumento no número de empresas que cancelaram suas operações. Apesar de uma ligeira recuperação no início de 2020, a crise económica e social desencadeada pela pandemia de COVID-19 (SARS-CoV-2) tem sido implacável junto do empresariado local e afetou principalmente o setor das PME. As taxas de desemprego distrital atingiram 16,3% no final de 2020 e a contração do PIB local aproximou-se de 6,4%. Como alternativa para aumentar a competitividade e inovação nas PMEs, bem como uma opção para sua sobrevivência em tempos de crise, a estratégia de plataforma colaborativa vem sendo trabalhada e implementada nas últimas duas décadas em todo o mundo. O conceito de colaboração empresarial está associado à resiliência económica das organizações humanas ao propor práticas inovadoras e mobilizar recursos em resposta às dificuldades e desafios existentes. Nesse sentido, o objetivo deste artigo é revisar o estado da arte das redes de colaboração empresarial, expondo suas principais características, as fases de sua implementação, sua formulação, métodos de análise e aplicações práticas, com a finalidade de expor a conveniência, alcance e possíveis limitações desta estratégia como uma opção para as PMEs locais para mitigar o seu crescente encerramento com os impactos económicos e sociais que isso implica

Hidrogeles multicomponentes basados en vinilpirrolidona y su aplicación en ingeniería de tejidos y/o medicina regenerativa

Hidrogel con estructura de red polimérica multicomponente entrecruzada, caracterizado porque comprende: a) unidades derivadas de vinilpirrolidona (V) y unidades derivadas de un monómero alquénico aniónico o anionizable (A), donde las relaciones de reactividad en copolimerización radical binaria de (V) y (A) tienen valores máximo y mínimo de 0.5 respectivamente; y b) unidades derivadas de al menos un entrecruzante; siempre que el o los entrecruzantes sean i) dos entrecruzantes E1 y E2, donde E1 presenta homología al menos parcial respecto a (A) y E2 presenta homología al menos parcial respecto a (V); o ii) un entrecruzante E3 que presenta homología respecto a (A) y (V). Procedimiento de obtención del mencionado hidrogel que comprende poner en contacto los monómeros (A) y (V) con los entrecruzantes E1 y E2, o el entrecruzante E3, en condiciones de polimerización radicalaria. Uso del hidrogel en aplicaciones biológicas, biomédicas o biotecnológicas que requieran una interacción no tóxica hidrogel-célula.Peer reviewedConsejo Superior de investigaciones Científicas, Universidad Complutense de MadridB1 Patente sin examen previ

Business Consulting - J&W Cía. S.A.

La presente consultoría de negocios ha sido realizada a J&W Cía. S.A., una empresa familiar dedicada al desarrollo de proyectos de consultoría y equipamiento eléctrico, teniendo como mercado objetivo a las empresas industriales nacionales. Cuenta con una imagen sólida entre sus clientes, debido a la calidad de sus productos, servicios y precios competitivos, que le han permitido obtener homologaciones con empresas industriales importantes y la representación de marcas de orden mundial en equipamiento eléctrico. En el análisis efectuado a la empresa se identificó que, pese a sus atributos no ha logrado consolidar su posicionamiento en el sector; además, los resultados no han alcanzado una utilidad neta después de impuestos acorde con sus objetivos, fluctuando la misma entre 1.10% y -3.96%, desde el 2017 al 2019. Al realizar la evaluación de la información recopilada de la empresa, se concluyó que en J&W Cía. S.A., existe una deficiente gestión del capital de trabajo, y que dicha situación afecta a la competitividad y eficiencia de la empresa. Esto se complica aún más con la llegada de la pandemia originada por el COVID-19, que ha generado incertidumbre y afectado la economía de muchos países como el Perú; la empresa no ha sido ajena a ello. Para dar solución al problema clave se realizó un análisis de causa raíz para identificar alternativas de solución, de las cuales se seleccionaron: control de costos y flujo de caja; estas soluciones requerirán de una inversión de S/. 241,308 para su implementación, que establecerían la utilidad neta después de impuestos entre 1% y 13%, aproximadamente a la culminación del ejercicio 2021.This business consulting has been carried out to J&W Cía. S.A., a family business dedicated to the development of electrical equipment and consulting projects, targeting national industrial companies. It has a solid image among its clients, due to the quality of its products, services and competitive prices, which have allowed it to obtain approvals with important industrial companies and the representation of world-class brands in electrical equipment. In the analysis carried out on the company, it was identified that, despite its attributes, it has not managed to consolidate its position in the sector; furthermore, the results have not reached a net profit after taxes in line with its objectives, fluctuating between 1.10% and -3.96%, from 2017 to 2019. When evaluating the information collected from the company, it was concluded that at J&W Cía. S.A., there is poor management of working capital, and that situation affects the competitiveness and efficiency of the company. This is further complicated by the arrival of the pandemic caused by COVID-19, which has generated uncertainty and affected the economy of many countries such as Peru; the company has not been oblivious to it. To solve the key problem, a root cause analysis was carried out to identify alternative solutions, from which the following were selected: cost control and cash flow; these solutions will require an investment of S /. 241,308 for its implementation, which would establish the net profit after taxes between 1% and 13%, approximately at the end of fiscal year 2021

Factores que afectan el peso al nacer del ganado vacuno Criollo Cubano

Genetic Center Rescate de Sanguily records of 692 calvings from 1987 up to 2000 comprising 127 female Cuban creole bo- vines with an age ranging from 2,2 to 16,6 years old were used to determine the impact of offspring sex, number of calvings, calving time (bimonthly), offspring birth year, and fresh cow age included as co-variant upon birth weight. Data were processed through Systat version 7.0 (Wilkinson, 1997) program to estimate the least squares media and its standard errors, as well as the variation coefficient for the discussed trait. Offspring sex, number of calvings, offspring birth year, and fresh cow age as regres- sion rate significantly affected (P<0,001) birth weight. Male offspring birth weight, was a 3,4% higher than female offspring birth weight and the best birth year registered was 1988. The highest weight-at-birth values were reached at third and up to the sixth calving.Se utilizó la información de 692 partos ocurridos durante los años 1987 al 2000, pertenecientes a 127 vacas con edades entre 2,2 a 16,6 años, de la raza Criollo Cubano, pertenecientes a la Empresa Genética Rescate de Sanguily, de la provincia de Cama- güey, Cuba, con el objetivo de determinar la influencia sobre el peso al nacer de: sexo de la cría, número de partos, época (bimes- tres), año de nacimiento y la edad de la madre al parto como covariable. Los datos se procesaron mediante el programa Systat versión 7.0 (Wilkinson, 1997); se estimó la media mínima cuadrática y su error estándar, así como el coeficiente de variación para el rasgo estudiado. El sexo de la cría, número de partos, año de nacimiento y la edad al parto como regresión afectó significativamente (P<0,001) al rasgo estudiado. El peso al nacer de los machos fue superior en 3,4 % al de las hembras, y se comportó como mejor año de nacimiento el 1988. Los mejores pesos al nacer se alcanzaron del tercero al sexto partos

Late Holocene archaeobotanical evolution of the Canale di Imbocco (Roman imperial port of Portus, Central Italy)

The Roman port of Portus was the most important in the Mediterranean during the imperial period (27 BC–476 AD). It wasmade up of an outer port or Claudius basin and an inner hexagon or Trajan's port, joined by the Canale di Imbocco. The archaeobotanical record obtained in a continuos sediment core taken in this channel ismade up of 19 types of plant macroremains, with a predominance of fibers of the seagrass Posidonia oceanica L., replaced by fluvial sediments in the upper part of the core. Seeds, fruits and thorns of aquatic species frommarine or brackish waters, halophyte species, edible species, freshwater riparian vegetation and remains of charcoal and wood also appear regularly. According to the inferred palaeoenviromental evolution of this core, Portus was an area of fluvial-marine interaction during the Roman Empire, with brackish water conditions interrupted by stormy periods deduced from the record of P. oceanica. The archaeobotanical and sedimentary evolution points to a restriction of marine contributions and a final implantation of a fluvial environment. In this evolution, a specific interval with abundant charcoal and caryopses of Triticum could correspond to a fire, which was followed by a possible period of greater construction activity linked with large fragments of wood.This paper was jointly supported by the following projects: a) project DGYCIT CTM2006-06722/MAR; b) DGYCIT project CGL2006-01412; c) “From the Atlantic to the Mediterranean (DEATLANTIR): Research in the infrastructures of Portus-Ostia Antica: the Lanterna wharf” (Programme of Archeology Projects Abroad, Ministry of Culture and Sports); d) From the Atlantic to the Tyrrhenian. Hispanic ports and their commercial relations with Ostia Antica (DEATLANTIR II - HAR2017-89154-P - (National R&D Plan)); and e) FEDER project 2014-2020 UHU-1260298. Other funds come from the research groups HUM-132, RNM-238 and RNM-293 (P.A.I.D.I). It is a contribution to the Center for Research in Historical, Cultural and Natural Heritage of the University of Huelva. The archaeobotanical record is deposited in the Laboratory of Paleontology and Applied Ecology of the University of Huelva

Notas para pensar la Interculturalidad en la Universidad: Reflexiones sobre una experiencia de extensión universitaria con Pueblos Originarios en Pandemia desde un enfoque antropológico educativo

This essay is a collective systematization of a common work experience between members of the National University of San Luis (UNSL), in the Argentine Republic, and members of various indigenous communities belonging to the Huarpe Nation People. This experience was part of a university extension project and is related, in turn, with the UNSL Indigenous Peoples Program. This essay includes a set of critical reflections on the difficulties that arise in the construction of intercultural spaces within the framework of university institutions.El presente ensayo es una sistematización colectiva de una experiencia de trabajo común entre integrantes de la Universidad Nacional de San Luis (UNSL), en la República Argentina, e integrantes de diversas comunidades indígenas pertenecientes al Pueblo Nación Huarpe. Esta experiencia formó parte de un proyecto de extensión universitaria y tiene relación, a su vez, con el Programa de Pueblos Indígenas de la UNSL. Este ensayo recoge un conjunto de reflexiones críticas en torno a las dificultades que se presentan en la construcción de espacios interculturales en el marco de las instituciones universitarias

Small renal masses in Latin-American population : Characteristics and prognostic factors for survival, recurrence and metastasis - A multi-institutional study from LARCG database

To evaluate demographic, clinical and pathological characteristics of small renal masses (SRM) (≤ 4 cm) in a Latin-American population provided by LARCG (Latin-American Renal Cancer Group) and analyze predictors of survival, recurrence and metastasis. A multi-institutional retrospective cohort study of 1523 patients submitted to surgical treatment for non-metastatic SRM from 1979 to 2016. Comparisons between radical (RN) or partial nephrectomy (PN) and young or elderly patients were performed. Kaplan-Meier curves and log-rank tests estimated 10-year overall survival. Predictors of local recurrence or metastasis were analyzed by a multivariable logistic regression model. PN and RN were performed in 897 (66%) and 461 (34%) patients. A proportional increase of PN cases from 48.5% (1979-2009) to 75% (after 2009) was evidenced. Stratifying by age, elderly patients (≥ 65 years) had better 10-year OS rates when submitted to PN (83.5%), than RN (54.5%), p = 0.044. This disparity was not evidenced in younger patients. On multivariable model, bilaterality, extracapsular extension and ASA (American Society of Anesthesiologists) classification ≥3 were predictors of local recurrence. We did not identify significant predictors for distant metastasis in our series. PN is performed in Latin-America in a similar proportion to developed areas and it has been increasing in the last years. Even in elderly individuals, if good functional status, sufficiently fit to surgery, and favorable tumor characteristics, they should be encouraged to perform PN. Intending to an earlier diagnosis of recurrence or distant metastasis, SRM cases with unfavorable characteristics should have a more rigorous follow-up routine

Temas Socio-Jurídicos. Volumen 16 No. 34 Junio de 1998

La revista temas Socio-Jurídico llega a su edición número 34, en la cual se divulgan los trabajos presentados por los profesores y estudiantes de la Facultad de Derecho, en el primer semestre del año en curso.The Socio-Legal issues magazine reaches its 34th edition, in which the works presented by the professors and students of the Faculty of Law are disclosed, in the first semester of the current year