Superparamagnetic particles in ZSM-5-type ferrisilicates

As-synthesized, low iron content, ferrisilicates of ZSM-5-type contain well-separated Fe(III) ions in a tetrahedral environment and display paramagnetic behavior. After hydrothermal treatment, the iron ions are partially extracted from the framework, generating nanosize iron oxide or oxyhydroxide ferrimagnetic particles. This process has been studied by transmission electron microscopy (TEM), Mossbauer spectroscopy, magnetic ac susceptibility (chi(ac)), and field dependent magnetization, on samples containing up to 6.7 wt. % Fe. The experiments evidence the growth of nonaggregated particles, with a typical size around 3 nm, presumably located at the surface of the ferrisilicate crystallites, From a thorough granulometric analysis involving TEM and chi(ac) data, it is concluded that, in the range from 1.5 to 4.6 wt. % Fe, the particle size distributions are significantly independent of the iron content

Gene deficiency in activating Fcγ receptors influences the macrophage phenotypic balance and reduces atherosclerosis in mice

Immunity contributes to arterial inflammation during atherosclerosis. Oxidized low-density lipoproteins induce an autoimmune response characterized by specific antibodies and immune complexes in atherosclerotic patients. We hypothesize that specific Fcγ receptors for IgG constant region participate in atherogenesis by regulating the inflammatory state of lesional macrophages. In vivo we examined the role of activating Fcγ receptors in atherosclerosis progression using bone marrow transplantation from mice deficient in γ-chain (the common signaling subunit of activating Fcγ receptors) to hyperlipidemic mice. Hematopoietic deficiency of Fcγ receptors significantly reduced atherosclerotic lesion size, which was associated with decreased number of macrophages and T lymphocytes, and increased T regulatory cell function. Lesions of Fcγ receptor deficient mice exhibited increased plaque stability, as evidenced by higher collagen and smooth muscle cell content and decreased apoptosis. These effects were independent of changes in serum lipids and antibody response to oxidized low-density lipoproteins. Activating Fcγ receptor deficiency reduced pro-inflammatory gene expression, nuclear factor-κB activity, and M1 macrophages at the lesion site, while increasing anti-inflammatory genes and M2 macrophages. The decreased inflammation in the lesions was mirrored by a reduced number of classical inflammatory monocytes in blood. In vitro, lack of activating Fcγ receptors attenuated foam cell formation, oxidative stress and pro-inflammatory gene expression, and increased M2-associated genes in murine macrophages. Our study demonstrates that activating Fcγ receptors influence the macrophage phenotypic balance in the artery wall of atherosclerotic mice and suggests that modulation of Fcγ receptor-mediated inflammatory responses could effectively suppress atherosclerosis

Board Independence and Corporate Social Responsibility Disclosure: The Mediating Role of the Presence of Family Ownership

This paper examines the impact of board independence on corporate social responsibility (CSR) disclosure and analyses the moderating effect of the presence of family ownership. Using an international sample from 29 countries from 2006 to 2014, our panel Tobit estimation shows that board independence is negatively associated with CSR disclosure practices and they present opposition to CSR disclosure practices. However, family ownership moderates the relationship and enforces the positive orientation of independent directors towards CSR disclosure. This shows that the presence of family ownership reduces independent director concern of reputation risks associated with receiving misleading information and family firms decrease the asymmetries of information between the independent director and management. The study also finds that independent directors encourage CSR disclosure in family firms more in civil law countries where investor protection is low compared to common law countries where investor protection is high.We would like to thank European Union for providing Erasmus Plus International Credit Mobility Scholarship to Mr. Shashank Bansal. This research is performed during his stay at University of Granada, Spain, as a part of scholarship

Direct Selective Laser Synthesis of CuCrFeNiTiAl High Entropy Alloy from Elemental Powders through Selective Laser Melting

This study investigated the synthesis of CuCrFeNiTiAl high entropy alloy (HEA) from pure elements using selective laser melting (SLM). The objectives are to validate the feasibility of the HEA fabrication from elemental powder materials, and to examine the effect of various process conditions in SLM, such as laser power, point distance and laser exposure time, on the microstructures formed. The as-built samples under high, medium and low energy densities were characterized by X-ray diffraction (XRD), and the microstructures were observed using scanning electron microscopy (SEM). The XRD results showed that five major crystal structure phases (hexagonal, monoclinic, orthorhombic, body-centered cubic and rhombohedral) were present in all samples. Fine-grained phases were noticed on the sample surface with non-uniform microstructural distribution. Such phases in high and low energy density samples were observed polygonal while round-shaped microstructures were observed for samples prepared under medium energy density conditions. Also, the grain size was proportional to energy levels of the fabrication process. Large size and clustered structures are prominent in samples produced under high energy density

The Opinions of European Companies on Corporate Social Responsibility and Its Relation to Innovation

In recent years there has been greater concern among companies to include responsible practicesin their goals. To achieve this aim, companies are beginning to manage economic, socialand environmental factors following socially responsible practices. Adopting a strategy of CorporateSocial Responsibility (CSR) may influence the different policies implemented by thecompany, one of which is that regarding innovation. In this study, we analyze the opinions of95 European companies, 42 of which form part of the Dow Jones Sustainability Index (DJSI)and 53 of which belong to the Dow Jones General Index (DJGI), concerning their CSR policy,the innovation carried out and the relation between the two concepts. Our results show that theDJSI companies, unlike those belonging to the DJGI, consider their CSR strategy to be a keyfactor in generating competitive advantages and profits. Moreover, the companies surveyedhave implemented innovations that are more incremental than radical, and these innovationpractices are found to be influenced by CSR strategies

Complejo Cívico Administrativo de la Municipalidad Distrital de La Victoria - Chiclayo

La presente tesis para obtener el Título Profesional de Arquitecto, desarrolla de forma integral el Proyecto “Complejo Cívico Administrativo de la Municipalidad Distrital de La Victoria - Chiclayo “y está concebido como un equipamiento de servicios administrativo y cultural de carácter público, ubicado en uno de los ejes más importantes del distrito. El presente proyecto actualmente cuenta con código Snip y sus entes involucrados son el Gobierno Regional de Lambayeque y la Municipalidad Distrital de La Victoria. El Complejo Municipal incorpora actividades administrativas, culturales y recreativas, con la finalidad de rescatar y fortalecer la identidad cultural Chiclayana, a través de una arquitectura sustentable y como aporte para una mayor participación artística y cultural de la ciudadanía del distrito de la Victoria – Chiclayo. En la primera parte se desarrolla la investigación programática, en donde se analiza la esencia del proyecto, así como su tipología funcional, considerando una metodología de recopilación de datos y procesamiento de información. En la segunda parte, se desarrolla el proyecto arquitectónico generándose a partir de datos oferta – demanda y análisis de terreno. Partiendo de una conceptualización del proyecto como idea rectora, para dar como resultado, la elaboración del proyecto arquitectónico y especialidades.The present thesis to obtain the Professional Title of Architect, develops in an integral way the Project "Civic Administrative Complex of the District Municipality of La Victoria - Chiclayo" and is conceived as an administrative and cultural service facility of a public nature, located in one of the the most important axes of the district. This project currently has a Snip code and its entities involved are the Regional Government of Lambayeque and the District Municipality of La Victoria. The Municipal Complex incorporates administrative, cultural and recreational activities, in order to rescue and strengthen the Chiclayana cultural identity, through sustainable architecture and as a report for a greater artistic and cultural participation of the citizens of the Victoria - Chiclayo district. In the first part, the programmatic research of the project is developed, where the essence of the project is analyzed, as well as its functional typology, considering a data collection and information processing methodology. In the second part, the architectural project is developed, generating from supply-demand data and terrain analysis. Starting from a conceptualization of the project as a guiding idea, to give as a result, the elaboration of the architectural project and specialties.Tesi

Nivel de incidencia de los factores actitudinales en la lealtad del cliente en la empresa Gases del Pacífico de la ciudad de Trujillo, 2022

El enfoque hacia al cliente durante los últimos años ha cobrado mayor importancia, pasando de la búsqueda de la satisfacción de sus necesidades y expectativas, hacia su anticipación, con el fin de buscar la lealtad y permanencia del cliente. Por esta razón,en conjunto con el ingreso del rubro de gas natural en el mercado residencial de Trujillo, el presente estudio tiene como objetivo de medir el nivel de incidencia de los factores actitudinales en la lealtad del cliente en la empresa Gases del Pacífico en la ciudad de Trujillo, 2022. La muestra utilizada es de 150 clientes activos con un contrato mayor o igual a 3 años, que tengan como principal fuente de suministro al gas natural y residan en la ciudad de Trujillo. La metodología se enfoca en un estudio cuantitativo, correlacional de alcance temporal transversal y no experimental. Se midieron los factores actitudinales ( Cognitivo, Afectivo, Conativo) y su incidencia en la lealtad, concluyendo, que al aplicar la prueba de Rho spearman los factores actitudinales influyen en la lealtad del cliente con una correlación directa positiva de 0.947.The focus on the customer in recent years has become more important, moving from persuing the satisfaction of their needs and expectations to the anticipation, in order to seek customer loyalty and permanence. For this reason, and since the entry of the natural gas industry in the Trujillo residencial market, this study aims to measure the incidence level of attitudinal factors in customer loyalty at Gases del Pacífico in the city of Trujillo, 2022. The sample used was 150 active customers with a contract greater than or equal to 3 years, who have natural gas as their main source of supply and reside in the city of Trujillo. The research methodology focuses on a quantitative, correlational, cross-sectional and non-experimental study. Attitudinal factors (Cognitive, Affective, Conative) and their impact on loyalty were measured, concluding that attitudinal factors influence on customer loyalty with a positive direct correlation of 0.947, measured with Spearman Rho test

Implementación de la metodología 5S para mejorar la efectividad en la Empresa de calzado Xiomara E.I.R.L, Trujillo 2022

La presente investigación se ejecutó con el fin de implementar la metodología 5S en la empresa de calzado Xiomara E.I.R.L, ubicada en la provincia de Trujillo, en el distrito de Florencia de Mora; la cual se dedica a laborar en el rubro industrial de fabricación y venta de calzado, especializado actualmente en sandalias de dama. El objetivo general fue implementar la metodología 5S para mejorar la efectividad de la empresa de calzado Xiomara E.I.R.L. Es una investigación de tipo aplicada y presenta un diseño pre-experimental, focalizándose en la efectividad de la empresa en el área de armado, entre los meses de setiembre, octubre y noviembre del año 2022, lo que conciernen el pre test y pos test. Los instrumentos que se utilizaron para la recolección de datos fueron: Check list, hojas de cálculo para la efectividad y las hojas de registro de producción. Dando como resultado, un incremento significativo de efectividad en la empresa; pues inicialmente se registró un 72.13%, para posteriormente aumentar a un 85.95% gracias a la implementación de la metodología 5S. Esto se evidencia en un incremento de 13.82%. Así mismo, la eficiencia y la eficacia aumentaron en 4.35% y 11.35%, respectivamente. En otro sentido, la evaluación inicial de cumplimiento de la metodología 5S, registró un 22% y posteriormente a la implementación se registró un 93%, lo que se deduce un incremento de 71%. Para concluir, es preciso mencionar que la metodología 5S origina un impacto favorable, pues sí incrementa la efectividad de la empresa de calzado Xiomara E.I.R.L

Derogación del inciso C del artículo 128° C. N. y A. y la limitación a acceder a una familia adoptiva del prohijado en Perú (1)

La presente investigación tiene como objetivo analizar si la derogación del inciso C del artículo 128 del Código de los Niños y Adolescentes limita el derecho del prohijado a acceder a una familia adoptiva en el Perú, para ello se empleó tres teorías: Teoría contractual, teoría condición y la teoría institucional; todo esto con la finalidad de argumentar y proteger al menor. Así mismo el tema de investigación es de tipo cualitativo. Se utilizó como técnica la entrevista a jueces y abogados especialistas en familia. Los resultados de las entrevistas que se realizó a especialistas de familia, cuatro de los seis entrevistados están de acuerdo a que el inciso anteriormente mencionado retorne a nuestro ordenamiento jurídico y dos entrevistados alegaron que no hay limitación y que no debe ser reincorporado. El cual se pudo concluir, que el derecho que tienen los menores prohijados a acceder a una familia adoptiva actualmente es restringido, pues el legislador ha obstaculizado que el prohijado, pueda ser adoptado por las personas que cuidaron de él, reemplazando por el acogimiento