Geochemical keys for the genesis of Proterozoic garnet-rich rocks and minor metasediment-hosted Pb-Zn-Ag mineralization, southern Curnamona Province, Australia

Garnet-rich rocks are spatially associated with the giant Paleoproterozoic Broken Hill (BH) Pb-Zn-Ag deposit and smaller Broken Hill-type (BHT) deposits. However, they also occur throughout the southern Curnamona Province (SCP), Australia, unrelated to sulfides. Mn-bearing garnet-rich rocks at BH, Cathedral Rock, Meningie Well, Polygonum, Thunderdome, Mutooroo, Iron Blow, Doughboy, and Weekeroo are conformable to bedding in surrounding metasedimentary rocks, and represent impure chemical precipitates formed on the floor of a rifted basin. Mn was derived from spatially related mafic lavas. Y/Ho and Zr/Hf ratios indicate that most garnet-rich rocks formed from Cl-bearing hydrothermal fluids. Mn-rich and Mn-Ca-rich, Fe-poor garnets and host garnetite and garnet-pyroxenoid rocks at BH show positive Eu anomalies (Eu/Eu* \u3e 1), whereas Mn-poor, Fe-rich garnets and host quartz garnetite and garnet-gahnite rocks from BH, and quartz garnetite and garnet-amphibole rocks from other sites in the SCP exhibit negative Eu anomalies (Eu/Eu*\u3c 1). Calculations of KD grt/rock REE and interelement correlations between REEs and major element contents in garnet indicate that the LREEs are crystallographically controlled in garnet whereas the LREEs are not. Eu/Eu* \u3e 1 reflect high amounts of Eu2+ that was preferentially incorporated into/onto original Mn-, and Mn-Ca-rich oxides/carbonates. In contrast, Eu/Eu* \u3c 1 indicates the preferential discrimination against Eu2+ by Fe-rich, Mn-poor precursor minerals. Precursors to Mn-poor, Fe-rich garnet- and gahnite-rich rocks in B and C lodes at BH and elsewhere in the SCP that exhibit Eu/Eu* \u3c 1 and high Fe/Ti ratios formed between 250 and 300°C from hydrothermal fluids at low fO2 conditions. The precursors to Mn and Ca-Mn garnetite and pyroxenoid-bearing rocks from 2 and 3 lenses and A lode at BH that show low Fe/Ti ratios and Eu/Eu* \u3e 1 were derived from high T (T \u3e 250°C) hydrothermal fluids. These fluids precipitated Mn at higher fO2 conditions than those that formed Mn-poor rocks. The sign of the Eu anomaly is dependent on several physical and chemical factors, the most important of which are T, fO2, and the crystallographic control the precursor Fe-Mn minerals had on the relative distribution of Eu 2+ and Eu3+. Enrichments in Mn, K, Rb, S, Ga, Cs, Eu, Sn, U, W, Cu, Pb, Zn, As, Cd, Sb, Ag, and Au, and Eu/Eu* \u3e 1 in garnet-rich rocks can be used as exploration guides in the search for BHT mineralization. Garnet from the BH deposit is enriched in Zn (\u3e400 ppm), Cr (\u3e140 ppm), and Eu (\u3e6 ppm), and depleted in Co, Ti, and Y compared to garnet in other garnet-rich rocks in the SCP. These values, as well as Mn contents \u3e15 wt.% MnO and Eu/Eu* \u3e 1, are also considered as guides to BHT mineralization.;Low-grade Zn-Pb-Ag mineralization occurs at the Polygonum, Thunderdome, Hunters Dam, and Benagerie Ridge prospects as fine-grained laminated pyrite and sphalerite within pyritic carbonaceous/graphitic metapelites, calcareous shales/silts, Mn-bearing sideritic carbonates, calc-silicates, carbonate lenses, and feldspar-carbonate layers [Bimba Formation, Strathearn Group (OD) and Ettlewood Calc-Silicate Member (BHD)]. This sulfide mineralization is syngenetic and resembles sulfide mineralization at the HYC deposit, Queensland. It formed with chemical/evaporitic precipitates in a shallow non-marine/lacustrine environment. delta 13CPDB and delta18OPDB values of calcite are between -10.2 and -0.8‰ and -19.2 to -16.8‰, respectively. Differences in delta13C values in carbonates from the same area suggest that the lower delta13C values represent higher amounts of original organic C or that equilibrium homogenization during metamorphism was not attained. The delta13CPDB values are heavier than delta13C values (~ -26‰ to -21‰ PDB) of carbonates in ore from the BH deposit. These light delta13C values resulted from decarbonation and the high T effects of metamorphism. Based on the presence of graphite in each study site, there appears to be a genetic link between biogenic C, base metal mineralization, and carbonate deposition. At the Polygonum and Thunderdome prospects, stratabound Pb-Zn mineralization occurs within garnet- and gahnite-bearing metapsammopelitic phyllites, laminated andalusite/chiastolite phyllites, laminated garnetite, quartz garnetite, banded Mn-bearing iron formation, and amphibolite [lower Saltbush Subgroup, Strathearn Group (OD) and upper Broken Hill Group (BHD)]. Whole rock values of \u3e4 ppm Tl, \u3e25 ppm Cd, \u3e17 ppm Se in units 2 and 4, a Zn/(Zn+Fe) ratio of \u3e0.6 for zincian spinel, a (Mn+Fe+Mg)/(Mn+Fe+Mg+Ca) ratio \u3e0.9 for carbonates, a Mn/(Mn+Fe+Mg) ratio of \u3e0.6 for garnet in garnet-quartz rocks, and a (Mn+Fe)/(Mn+Ca+Fe) ratio of \u3e0.3 for garnet in calc-silicate rocks are geochemical indicators of stratabound Pb-Zn mineralization in the northern part of the SCP

Percepción de la responsabilidad social universitaria de los estudiantes de las Universidades de Piura, 2022

La presente investigación titulada “Percepción de la Responsabilidad Social Universitaria de los estudiantes de las universidades de Piura, 2022” presenta, en su marco teórico, una explicación adecuada sobre la Ley Universitaria N°30220. Asimismo, a lo largo del estudio, se detallan puntos claves con respecto al modelo URSULA que permiten comprender mejor qué es y por qué es tan importante esta temática. En esa línea, con una finalidad básica y tipo descriptiva, esta investigación plantea como objetivo general identificar la percepción de la RSU en los estudiantes de las diversas universidades de Piura. Para la recopilación de datos que permitan dar una respuesta amplia y precisa, se aplicó como técnica de estudio a la encuesta, debido a su capacidad de obtener información que puede ser interpretada en diferentes contextos. En ese sentido, se aplicó como instrumento, un cuestionario dirigido a 384 estudiantes de la Universidad de Piura, Universidad César Vallejo y Universidad Privada Antenor Orrego, divididos en tres grupos iguales. Finalmente, se concluyó que la percepción de los estudiantes sobre la responsabilidad social universitaria que desarrollan las universidades de Piura es buena porque consideran que muchos de los indicadores que establece el modelo URSULA se cumplen adecuadamente, permitiéndoles también gestionar sus impactos de manera eficaz, tal como lo solicita la Ley Universitaria N° 30220The present investigation entitled ""Perception of University Social Responsibility of the students of the universities of Piura, 2022"" presents in its theoretical framework an adequate explanation of the University Law No. 30220. Likewise, throughout the study, key points are detailed regarding the URSULA model that allow us to understand more about what it is and why this topic is so important. In this line, with a basic purpose and descriptive type, this research proposes as a general objective to identify the perception of the RSU in the students of the various universities of Piura. For the collection of data that allow a broad and precise answer to be given, the survey was applied as a study technique, due to its benefit of data collection that can be interpreted in different contexts. In this sense, a questionnaire was applied as an instrument addressed to 384 students from the Universidad de Piura, Universidad César Vallejo and Universidad Privada Antenor Orrego, divided into three equal groups. Finally, it was concluded that the students' perception of university social responsibility developed by the universities of Piura is good because they consider that many of the indicators established by the URSULA model are adequately met, also allowing them to manage their impacts effectively, such as it is requested by University Law No. 30220.Tesi

Zinc-rich spinels associated with Proterozoic base metal sulfide occurrences, Colorado, and their use as guides to metamorphosed massive sulfide deposits

[Zincian spinels [(Zn,Fe,Mg)Al204] are accessory minerals in a variety of rock types, including metamorphosed massive sulfide (mms) deposits, pegmatites, aluminous metasediments, marbles, and granulites. Textural and compositional studies of spinels in twelve Proterozoic mms deposits metamorphosed to amphibolite and granulite facies in Colorado, shed new light on the use of spinel composition as a guide to sulfide ores. Spinels from the Independence, Bon Ton, and Sedalia deposits and some from the Green Mountain, Betty, Caprock, Cinderella, and Cotopaxi deposits, which occur associated with mms deposits hosted by Fe-A1 rich hydrothermally altered aluminous metasediments and/or metavolcanics, show compositions that correspond to zincian spinels elsewhere in the world (gahnite40−90hercynite0−40spinel0−30). However, other spinels are depleted in Zn and enriched in Mg and Fe and occur in rocks dominated by Mg-rich (±Ca) assemblages such as phlogopite-anthophyllite (Ace High), phlogopite-tremolite-clinochlore (Cinderella), forsterite-cummingtonite-actinolite (Caprock), forsterite-actinolite-clinochlore-phlogopite (Cotopaxi), and sapphirine, forsterite, phlogopite, anthophyllite, cordierite, enstatite, and clinohumite-rich rocks unusually Mg-rich alteration zones from Colorado is markedly different from those in and adjacent to mms elsewhere in the world, and exhibit compositions of gahnite0−65hercynite0−40spinel20−90. This study shows that the composition of spinels in and surrounding mms deposits is influenced by reactions involving Zn- and Fe-sulfides as well as by bulk composition, which in the case of many mms deposits in Mg-rich alteration zones in Colorado causes a marked enrichment in the spinel (sensu stricto) component of zincian spinel. Knowledge of the geological setting must be considered when using zincian spinels as a guide to metamorphosed massive sulfide deposits. Zincian hercynite from Evergreen occurs in aluminous enclaves in Gedrite-cordierite gneisses that preserved spectacular corona, symplectic, and pseudomorph textures. Textural and compositional studies suggest the following set of reactions were derived from the assemblage gedrite+sillimanite±quartz±hercynite: ged+sil+qtz = crd+grt; ged+sil = qtz+crd; ged+sil = hc+crd; ged+sil+hc = st+crd; ged+sil = st+crd; sil+hc = crn+st; st = crd+hc+crn; and he+ilm+crn+vapor = hog. Minimum peak conditions were 5900C and 5 kbars based on silicate stabilities. Coronas and symplectites were formed during decompression along a counter clockwise P-T trajectory.

Análisis de la relación entre contextos sociales vulnerables y la comisión de delitos, a partir de la percepción de familias de personas privadas de la libertad en el Establecimiento Penitenciario de Mediana Seguridad y Carcelario de Manizales.

En esta monografía se estudia y analiza la relación entre contextos sociales vulnerables y la comisión de delitos a partir de la percepción de familias de personas privadas de la libertad del Establecimiento Penitenciario de Mediana Seguridad y Carcelario de Manizales. La investigación se sustenta en un enfoque de carácter cualitativo, en base a la técnica de la entrevista semi – estructurada realizada a las esposas e hijos de los privados de la libertad del patio #3 del Establecimiento Penitenciario y Carcelario. Los resultados visibilizan cómo los contextos sociales vulnerables, caracterizados por tener altos índices de violencia, pobreza, desigualdad y exclusión social, son condicionantes para la comisión de acciones delictivas.This monograph studies the relationship between vulnerable social contexts and the commission of crimes based on the perception of families of prisoners in the city of Manizales. This research shows the results of semi - structured interview to families of prisoners in courtyard number 3 of the Manizales Medium Security and Prison Establishment, in order to determinate the their socio-demographic characteristics which involve factors like marginalization, social exclusion, poverty, high rates of violence, low levels of education, and the relationship with the commission of criminal actions

Promoting zero violence from early childhood: a case study on the prevention of aggressive behavior in Cappont Nursery

Relevant studies have shown that if aggressive behavior is not stopped in early childhoodand persists during elementary school, the risk of continued physical violence and othernon-violent forms of delinquency increases during adolescence (Williford et al.2011). Evidence also shows the effectiveness of an intervention that targets aggressive behavior whenimplemented with children underfive (Tremblay et al.2008). The aim of this study is toanalyze the violence-prevention actions being implemented in Cappont Nursery, whichserves children from one to three years old in Lleida (Spain)

La investigación formativa en el programa de Terapia Ocupacional

La ciencia como construcción altamente elaborada está presente en todas las esferas de desarrollo del hombre contemporáneo. Los procesos de formación incluyen la enseñanza y aprendizaje de sistemas conceptuales y lingüísticos complejos y la inculcación de un sistema de representaciones e imágenes científicas, modelos, técnicas, notaciones, problemas y manejo de instrumentos y de datos (1). Además supone las formas de comunicación de los resultados ante las comunidades de modo que el proceso de construcción del conocimiento sea dinámico

Documentación de los programas prerrequisito para la implementación de buenas prácticas de manufactura en la empresa colombiana de mariscos Colmariscos

Microbiólogo (a) IndustrialPregrad

Impact of the job training program "Transform" and the Employability Route of the Public Employment Service, on the access to the formal labor market of the young population victim of the armed conflict

La presente investigación analiza el impacto del programa “TransFórmate”, que brinda la oportunidad de estudiar programas de formación para el trabajo, junto con el acceso a la Ruta de Empleabilidad del Servicio Público de Empleo (SPE), como las principales políticas activas de empleo ofrecidos por el Sector Trabajo para promover el acceso y permanencia en el mercado laboral formal de la población joven víctima del conflicto armado. Para ello, se compara la trayectoria en el mercado laboral formal de los jóvenes víctima beneficiarios del programa TransFórmate y de la Ruta de Empleabilidad versus los jóvenes víctima que cumplían con los requisitos del programa, se preinscribieron, pero finalmente no fueron beneficiarios y, aquellos que cumplían con los requisitos, pero no se preinscribieron ni realizaron la Ruta de Empleabilidad. Esta comparación se hizo tanto previo al proceso de formación como posterior al mismo, mediante una metodología combinada de matching por propensity score y un modelo de diferencias en diferencias. Como principales resultados se destaca el aumento en el enganche laboral, los salarios y un impacto positivo en la empleabilidad de la población juvenil víctima al finalizar su proceso de formación; mientras que la participación en la Ruta de Empleabilidad del SPE, no registra un aumento adicional en el enganche laboral ni en los salarios al que se obtiene con la formación otorgada por el Programa “TransFórmate”.The present research analyzes the impact of the "TransFórmate" program, which provides the opportunity to study job training programs, together with access to the Employability Route of the Public Employment Service (SPE), as the main active employment policies offered by the Labour Sector to promote access and permanence in the formal labor market of the young population victimized by the armed conflict. To this purpose, the trajectory in the formal labor market of the young victim beneficiaries of the TransFórmate program and of the Employability Route is compared to the young victims who met the requirements of the program, were pre-registered, but finally were not beneficiaries, and those who met the requirements but did not pre-register or complete the Employability Route. This comparison was made both before and after the training process, using a combined propensity score matching methodology and a differences in differences model. The main results include an increase in the employment rate, salaries and a positive impact on the employability of the victim youth population at the end of their training process, while participation in the SPE Employability Route does not register an additional increase in the employment rate or in salaries to that obtained with the training provided by the TransFórmate Program