201 research outputs found

    Personalized cancer T-cell therapy takes the stage, mirroring vaccine success.

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    Personalized T-cell therapy is emerging as a pivotal treatment of cancer care by tailoring cellular therapies to individual genetic and antigenic profiles, echoing the exciting success of personalized vaccines. We describe here the parallel evolution and analogies of cancer vaccines and T-cell therapies

    Covid-19 is bad news for foreign direct investment, but there may be a silver lining

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    Value investors may kickstart a virtuous cycle of capital going abroad again as soon as economies reopen, write Cristián Rodríguez-Chiffelle and Peter Vanha

    Ethical and Unethical Hacking

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    The goal of this chapter is to provide a conceptual analysis of ethical, comprising history, common usage and the attempt to provide a systematic classification that is both compatible with common usage and normatively adequate. Subsequently, the article identifies a tension between common usage and a normativelyadequate nomenclature. ‘Ethical hackers’ are often identified with hackers that abide to a code of ethics privileging business-friendly values. However, there is no guarantee that respecting such values is always compatible with the all-things-considered morally best act. It is recognised, however, that in terms of assessment, it may be quite difficult to determine who is an ethical hacker in the ‘all things considered’ sense, while society may agree more easily on the determination of who is one in the ‘business-friendly’ limited sense. The article concludes by suggesting a pragmatic best-practice approach for characterising ethical hacking, which reaches beyond business-friendly values and helps in the taking of decisions that are respectful of the hackers’ individual ethics in morally debatable, grey zones

    Evaluación foliar de aceites esenciales de especies de Eucalytus sp. susceptibles al daño de Gonipterus scutellatus (coleoptera: curculionidae)

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    - Huerta, A.; García, D. Departamento de Silvicultura, Facultad de Ciencias Forestales, Universidad de Chile. Casilla 9206, Santiago, Chile. - Chiffelle, I . Departamento de Agroindustria y Enología, Facultad de Ciencias Agronómicas, Universidad de Chile. Casilla 1004, Santiago, Chile.Dada la presencia en Chile desde 1998 del insecto defoliador Gonipterus scutellatus (Coleoptera: Curculionidae), el cual está causando serios daños en las plantaciones de Eucalipto desde las regiones IV a la VIII, se evaluó la composición de los principales aceites esenciales volátiles entre tres especies de eucalipto cultivadas en Chile (E. globulus, E. nitens y E. camaldulensis) por su rol en la resistencia al ataque de este insecto. La identificación de los aceites esenciales se hizo por cromatografía de gases. El gas de arrastre fue vapor de agua y las muestras se diluyeron 20 veces en n-hexano y se compararon con patrones preestablecidos. Se hicieron tres repeticiones por especie de eucalipto de 20 minutos a 100ºC. Como resultado se obtuvo que el componente esencial de las hojas de eucalipto más abundante fue el eucalyptol, destacándose en las hojas de E. nitens, donde tuvo una participación superior al 50%, seguido de E. globulus, con un 25% de presencia y finalmente, en E. camaldulensis con cerca del 2%. Este aceite esencial se asocia a un papel defensivo. El aceite esencial proveniente de las hojas de E. camaldulensis tuvo una mayor participación de ciclo azuleno (20%), presentándose únicamente en esta especie. También se encontraron otros aceites esenciales en menor proporción, tales como: alfa-pineno, camphino, entre otros. Por último, se recomienda proseguir con estudios conducentes a profundizar sobre el comportamiento de los aceites esenciales como factor de resistencia/susceptibilidad al daño causado por insectos

    A formalized model of the Trace

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    This work proposes a formalized model, grounded in forensic science, to support a unified understanding of the Trace across scientific disciplines. The model is precisely defined in mathematical terms that reflect the dynamics of an offense as expressed in Locard’s Exchange principle. Specifically, this mathematical ap-proach represents the Trace as the modification of a Scene, subsequently perceptible, resulting from the Event under investigation. Examples are provided to illustrate how this conceptualization applies to for-ensic science, including DNA and digital evidence. Broader implications of this model are presented in the context of COVID-19, emphasizing the value of cohesive scientific study of the Trace. The aim of this work is to stimulate more formalized study of the Trace, both from tangible and abstract perspectives, and to strengthen forensic science as a whole
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