The Story of the Puerto Rican-Chicano Committee

The concept or idea for The Puerto Rican-Chicano Committee (PRCC) came from UB student Alberto O. Cappas, who also was the original founder of PODER, at the time known as the Puerto Rican Organization for Dignity, Elevation, and Responsibility

Internal screening and dielectric engineering in magic-angle twisted bilayer graphene

Magic-angle twisted bilayer graphene (MA-tBLG) has appeared as a tunable testing ground to investigate the conspiracy of electronic interactions, band structure, and lattice degrees of freedom to yield exotic quantum many-body ground states in a two-dimensional Dirac material framework. While the impact of external parameters such as doping or magnetic field can be conveniently modified and analyzed, the all-surface nature of the quasi-2D electron gas combined with its intricate internal properties pose a challenging task to characterize the quintessential nature of the different insulating and superconducting states found in experiments. We analyze the interplay of internal screening and dielectric environment on the intrinsic electronic interaction profile of MA-tBLG. We find that interlayer coupling generically enhances the internal screening. The influence of the dielectric environment on the effective interaction strength depends decisively on the electronic state of MA-tBLG. Thus, we propose the experimental tailoring of the dielectric environment, e.g. by varying the capping layer composition and thickness, as a promising pursuit to provide further evidence for resolving the hidden nature of the quantum many-body states in MA-tBLG.Comment: 9 pages, 3 figures, supplemental material included (8 figures

On Variants of CM-triviality

We introduce a generalization of CM-triviality relative to a fixed invariant collection of partial types, in analogy to the Canonical Base Property defined by Pillay, Ziegler and Chatzidakis which generalizes one-basedness. We show that, under this condition, a stable field is internal to the family, and a group of finite Lascar rank has a normal nilpotent subgroup such that the quotient is almost internal to the family

CIENCIA FICCIÓN CHILENA Y SABERES PSI: EL PROBLEMA DEL DOBLE EN LA OBRA LOS TÍTERES DE HUGO CORREA

Hugo Correa’s work now enjoys wide recognition, both national international, and is considered a milestone in the development of Chilean science fi ction. In addition to his celebrated novel Los altísimos, his collection of short stories Los títeres has also attracted signifi cant interest for the way in which it addresses the eff ects progress and industrialization on the era’s subjectivity. Th e present work seeks to examine, on the one hand, how the classic motif of the double is revisited through the codes of science fi ction and, on the other hand, the way in which puppets, lookalikes and doubles challenge alterity, revealing the confl uence of literary techniques and the themes of psy-knowledge. Th is analysis will demonstrate that, while problematizing the relations of human beings with a technological future, the short stories of Los títeres like wise exhibit the influence of psychological principles and psychopathological concepts through their plots and characters. La obra de Hugo Correa goza hoy de un amplio reconocimiento, nacional e internacional, y es considerada una pieza clave en el desarrollo de la ciencia fi cción chilena. Además de su insigne novela Los altísimos, la obra Los títeres suscitó un signifi cativo interés por el modo en que sus cuentos abordaron los efectos del progreso y la industrialización en la subjetividad de una época. El presente trabajo buscará examinar, por una parte, el modo en que el clásico motivo del doble es revisitado bajo los códigos de la ciencia fi cción y, por la otra, el modo en que títeres, sosias y dobles desafían la alteridad, dando cuenta de la conjugación de recursos literarios y tópicos relativos a los saberes psi. A partir de este análisis será posible sostener que, si bien los cuentos de Los Títeres problematizan las relaciones del ser humano con el futuro tecnológico, al mismo tiempo, sus personajes y sus tramas evidencian la intervención de principios psicológicos y conceptos psicopatológicos

Role of the quorum sensing mechanism in the response of pseudomonas aeruginosa to lethal and sublethal UVA irradiation

The role of quorum sensing (QS) in the response of Pseudomonas aeruginosa to UVA radiation was investigated in the PAO1 strain and derivatives defective in the synthesis of the QS signals 3OC12-HSL (lasI strain), C4-HSL (rhlI strain) or both (lasI rhlI strain). Cell viability measurements demonstrated that the double mutant was significantly more sensitive to UVA than single mutants, which in turn showed reduced cell survival with regard to the PAO1 strain. Irradiation under nitrogen atmosphere and chemiluminescence measurements indicated the oxidative nature of the UVA-induced damage. The activity of the antioxidant enzymes catalase and superoxide dismutase was assayed in these strains before and after irradiation, and a strong correlation between catalase levels and UVA sensitivity was observed. When a sublethal UVA dose was applied to PAO1, a growth delay was observed and this mechanism depended on the rhl system. Moreover, low doses of UVA irradiation triplicated the level of C4-HSL in log PAO1 cells. It is concluded that QS is fundamental in the defense against the toxic effects of UVA in P. aeruginosa. The induction of the QS system by UVA independently of cell density could function as an adaptative strategy to withstand this hostile environmental condition.Fil: Costa, Cristina Susana. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Radiobiología (Centro Atómico Constituyentes); ArgentinaFil: Pezzoni, Magdalena. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Radiobiología (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fernández, Rubén O.. Comisión Nacional de Energía Atómica; ArgentinaFil: Pizarro, Ramón Augusto. Comisión Nacional de Energía Atómica. Gerencia de Area de Aplicaciones de la Tecnología Nuclear. Gerencia de Radiobiología (Centro Atómico Constituyentes); Argentin

Phytoplankton Size Structure in Association with Mesoscale Eddies off Central-Southern Chile: The Satellite Application of a Phytoplankton Size-Class Model

Understanding the influence of mesoscale and submesoscale features on the structure of phytoplankton is a key aspect in the assessment of their influence on marine biogeochemical cycling and cross-shore exchanges of plankton in Eastern Boundary Current Systems (EBCS). In this study, the spatio-temporal evolution of phytoplankton size classes (PSC) in surface waters associated with mesoscale eddies in the EBCS off central-southern Chile was analyzed. Chlorophyll-a (Chl-a) size-fractionated filtration (SFF) data from in situ samplings in coastal and coastal transition waters were used to tune a three-component (micro-, nano-, and pico-phytoplankton) model, which was then applied to total Chl-a satellite data (ESA OC-CCI product) in order to retrieve the Chl-a concentration of each PSC. A sea surface, height-based eddy-tracking algorithm was used to identify and track one cyclonic (sC) and three anticyclonic (ssAC1, ssAC2, sAC) mesoscale eddies between January 2014 and October 2015. Satellite estimates of PSC and in situ SFF Chl-a data were highly correlated (0.64 < r < 0.87), although uncertainty values for the microplankton fraction were moderate to high (50 to 100% depending on the metric used). The largest changes in size structure took place during the early life of eddies (~2 months), and no major differences in PSC between eddy center and periphery were found. The contribution of the microplankton fraction was ~50% (~30%) in sC and ssAC1 (ssAC2 and sAC) eddies when they were located close to the coast, while nanoplankton was dominant (~60–70%) and picoplankton almost constant (<20%) throughout the lifetime of eddies. These results suggest that the three-component model, which has been mostly applied in oceanic waters, is also applicable to highly productive coastal upwelling systems. Additionally, the PSC changes within mesoscale eddies obtained by this satellite approach are in agreement with results on phytoplankton size distribution in mesoscale and submesoscale features in this region, and are most likely triggered by variations in nutrient concentrations and/or ratios during the eddies’ lifetimes

a systematic review

Background: The analysis of the European Union (EU28) health systems' intervention for type 2 diabetes mellitus (T2DM) reports an insufficient combination of legal support, prevention, and early diagnosis. This fact compromises the patient's health outcomes. The inclusion of pharmacy services oriented to T2DM (PS-T2DM) in strategic primary care network's programs could be a solution. However, the different regulatory frameworks that include good pharmaceutical practices and clinical guidelines for T2DM in each EU28 country may be a limitation. Health systems need to know the evolution of these community services and to analyze their operational and regulatory base, both in time and space. Methods: A systematic review was carried out on a qualitative and quantitative approach to the expansion and upgrading of PS-T2DM provided in EU28 pharmacies between 2008 and 2018. Results: The implementation of PS-T2DM in EU28 has increased sharply since 2009 and 2010. Diabetes mellitus (DM) is regulated in 5 countries (Bulgaria, Spain, Italy, Lithuania, and Portugal) and T2DM in 3 (Austria, Latvia, and Romania). Also, in 3 countries (Latvia, Poland, and Spain), pharmacists are involved in implementing guidelines for DM and T2DM, but there is no evidence on the regulation of PS-T2DM. Twenty-two countries showed detailed studies for the PS-T2DM's provision. The type of PS-T2DM implemented in the highest number of EU28 countries was "promoting the rational use of medicines," and the specific subtype T2DM-related more commonly reported was the "glucose measurement." Discussion/Conclusion: Pharmacy disease-oriented services contributed to improving the accessibility, proximity, and equity of primary care for T2DM provided in community pharmacies across the EU28 in recent decades. This promising strategy for improving health outcome sets may be a call to the action of health systems due to its impact consistent with some objectives of universal health coverage for the eradication of DM and T2DM.publishersversionpublishe

Topography, substratum and benthic macrofaunal relationships on a tropical mesophotic shelf margin, central Great Barrier Reef, Australia

Habitats and ecological communities occurring in the mesophotic region of the central Great Barrier Reef (GBR), Australia, were investigated using autonomous underwater vehicle (AUV) from 51 to 145 m. High-resolution multibeam bathymetry of the outer-shelf at Hydrographers Passage in the central GBR revealed submerged linear reefs with tops at 50, 55, 80, 90, 100 and 130 m separated by flat, sandy inter-reefal areas punctuated by limestone pinnacles. Cluster analysis of AUV images yielded five distinct site groups based on their benthic macrofauna, with rugosity and the presence of limestone reef identified as the most significant abiotic factors explaining the distribution of macrofaunal communities. Reef-associated macrofaunal communities occurred in three distinct depth zones: (1) a shallow (75 m). The effects of depth and microhabitat topography on irradiance most likely play a critical role in controlling vertical zonation on reef substrates. The lower depth limits of zooxanthellate corals are significantly shallower than that observed in many other mesophotic coral ecosystems. This may be a result of resuspension of sediments from the sand sheets by strong currents and/or a consequence of cold water upwelling

Gobernanza global: visiones teóricas y pluralidad de actores

A presente pesquisa tem o objetivo de fazer uma análise teórica sobre o movimento da governança global, através do estudo dos principais atores, articulações e mecanismos alternativos. A metodologia utilizada no trabalho foi revisão bibliográfica de abordagem qualitativa. Teve-se como critério a utilização de literatura clássica, artigos, estudos contemporâneos sobre a temática. A delimitação temporal da pesquisa se deu a partir da década de 1990, devido á ascensão dos processos de globalização após a guerra-fria, da nova ordem multipolar e do recrudescimento do neoliberalismo. Ocorreram assim mudanças nos paradigmas internacionais das relações políticas e econômicas entre atores heterogêneos e plurais –Estados nacionais, empresas multinacionais, sociedade civil global, organizações internacionais, blocos regionais-. Isso ampliou os cenários e espaços de disputa pelo poder. Essas dinâmicas comportam uma pluralidade de atores públicos e privados que disputam espaço e relacionam-se ao mesmo tempo. É nesse cenário de disputa, controle e condução pelo poder que as dinâmicas da governança global são estabelecidas, sem necessariamente um governo mundial constituído e revestido de uma única autoridade. O caráter contraditório e por vezes não explícito da governança global tem apresentado desafios teóricos para qualquer tentativa de entender seu funcionamento e sua evolução.The objective of this research is to carry out a theoretical analysis of the global governance movement through the study of the main actors, articulations and alternative mechanisms. The methodology used in the study was a bibliographical review of a qualitative approach. The criteria included the use of classical literature, articles and contemporary studies on the subject. The temporal delimitation of the research began in the 1990s, due to the rise of globalization processes after the Cold War, with the new multipolar order and the resurgence of neo-liberalism. So many changes occurred in international paradigms of political and economic relations between heterogeneous actors and plurals - nation states, multinational corporations, global civil society, international organizations, regional blocks - that the scenarios and spaces of power struggle expanded. These dynamics involve a plurality of public and private actors competing for space and relating at the same time. It is in this scenario that dispute for and control of the power dynamics of global governance are established, without necessarily a single world government anointed with authority. The contradictory, and sometimes not explicit, character of global governance has presented theoretical challenges for any attempts to understand its operation and its evolution.La presente investigación tiene como objetivo hacer un análisis teórico sobre el movimiento de la gobernanza global a través del estudio de los principales actores, articulaciones y mecanismos alternativos. La metodología utilizada en el trabajo fue revisión bibliográfica de abordaje cualitativa. Se tuvo como criterio la utilización de literatura clásica, artículos, estudios contemporáneos sobre la temática. La delimitación temporal de la investigación se dio a partir de la década de 1990, debido al acenso de los procesos de globalización después de la guerra fría, al nuevo orden multipolar y al recrudecimiento del neoliberalismo. Ocurrieron de esta forma cambios en los paradigmas internacionales de las relaciones políticas y económicas entre actores heterogéneos y plurales –Estados nacionales, empresas multinacionales, sociedad civil global, organizaciones internacionales, bloques regionales.- Eso amplió los escenarios y espacios de disputa por el poder. Esas dinámicas comprenden una pluralidad de actores públicos y privados que disputan espacio y se relacionan al mismo tiempo. Es en ese escenario de disputa, control y conducción por el poder que las dinámicas de la gobernanza global son establecidas, sin necesariamente un gobierno mundial constituido y revestido de una única autoridad. El carácter contradictorio y muchas veces no explícito de gobernanza global ha presentado desafíos teóricos para cualquier intento de entender su funcionamiento y evolución.Instituto de Relaciones Internacionale

Gobernanza global: visiones teóricas y pluralidad de actores

A presente pesquisa tem o objetivo de fazer uma análise teórica sobre o movimento da governança global, através do estudo dos principais atores, articulações e mecanismos alternativos. A metodologia utilizada no trabalho foi revisão bibliográfica de abordagem qualitativa. Teve-se como critério a utilização de literatura clássica, artigos, estudos contemporâneos sobre a temática. A delimitação temporal da pesquisa se deu a partir da década de 1990, devido á ascensão dos processos de globalização após a guerra-fria, da nova ordem multipolar e do recrudescimento do neoliberalismo. Ocorreram assim mudanças nos paradigmas internacionais das relações políticas e econômicas entre atores heterogêneos e plurais –Estados nacionais, empresas multinacionais, sociedade civil global, organizações internacionais, blocos regionais-. Isso ampliou os cenários e espaços de disputa pelo poder. Essas dinâmicas comportam uma pluralidade de atores públicos e privados que disputam espaço e relacionam-se ao mesmo tempo. É nesse cenário de disputa, controle e condução pelo poder que as dinâmicas da governança global são estabelecidas, sem necessariamente um governo mundial constituído e revestido de uma única autoridade. O caráter contraditório e por vezes não explícito da governança global tem apresentado desafios teóricos para qualquer tentativa de entender seu funcionamento e sua evolução.The objective of this research is to carry out a theoretical analysis of the global governance movement through the study of the main actors, articulations and alternative mechanisms. The methodology used in the study was a bibliographical review of a qualitative approach. The criteria included the use of classical literature, articles and contemporary studies on the subject. The temporal delimitation of the research began in the 1990s, due to the rise of globalization processes after the Cold War, with the new multipolar order and the resurgence of neo-liberalism. So many changes occurred in international paradigms of political and economic relations between heterogeneous actors and plurals - nation states, multinational corporations, global civil society, international organizations, regional blocks - that the scenarios and spaces of power struggle expanded. These dynamics involve a plurality of public and private actors competing for space and relating at the same time. It is in this scenario that dispute for and control of the power dynamics of global governance are established, without necessarily a single world government anointed with authority. The contradictory, and sometimes not explicit, character of global governance has presented theoretical challenges for any attempts to understand its operation and its evolution.La presente investigación tiene como objetivo hacer un análisis teórico sobre el movimiento de la gobernanza global a través del estudio de los principales actores, articulaciones y mecanismos alternativos. La metodología utilizada en el trabajo fue revisión bibliográfica de abordaje cualitativa. Se tuvo como criterio la utilización de literatura clásica, artículos, estudios contemporáneos sobre la temática. La delimitación temporal de la investigación se dio a partir de la década de 1990, debido al acenso de los procesos de globalización después de la guerra fría, al nuevo orden multipolar y al recrudecimiento del neoliberalismo. Ocurrieron de esta forma cambios en los paradigmas internacionales de las relaciones políticas y económicas entre actores heterogéneos y plurales –Estados nacionales, empresas multinacionales, sociedad civil global, organizaciones internacionales, bloques regionales.- Eso amplió los escenarios y espacios de disputa por el poder. Esas dinámicas comprenden una pluralidad de actores públicos y privados que disputan espacio y se relacionan al mismo tiempo. Es en ese escenario de disputa, control y conducción por el poder que las dinámicas de la gobernanza global son establecidas, sin necesariamente un gobierno mundial constituido y revestido de una única autoridad. El carácter contradictorio y muchas veces no explícito de gobernanza global ha presentado desafíos teóricos para cualquier intento de entender su funcionamiento y evolución.Instituto de Relaciones Internacionale