Análisis del machismo sexual en estudiantes universitarios

A study is presented that analyzed the characteristics of sexism; a descriptive, non-experimental cross-sectional methodology was used. The sample consisted of 3004 randomly chosen university students. A measurement scale with 12 items was used that allowed us to understand the current situation of the students in relation to sexism. The results indicate that sexism in university students is low, statistically significant differences were found between men and women, however, both groups present low scores. Likewise, there are differences in sexism by professional career, where engineering students score higher than social science students and age correlates directly and low with the variable under study. Keywords: Sexism, students, university. References [1]C. Silva Barreda and A. Zavala Calahorrano, «Machismo sexual y Marianismo en las relaciones de pareja, una revisión bibliográfica,» MEDWAVE, vol. 20, nº S1,2020. [2]B. Oblitas, «Machismo y violencia contra la mujer,» Investigaciones sociales, vol. 13, nº 23, pp. 301-322, 2009. [3]J. Calizaya, «Algunas ideas de investigación científica, » Minerva, vol. 1, nº 3, pp. 35-39, 2020. [4]G. W. Allport, The Nature of Prejudice. Reading, MA: Addison-Wesley, USA: MA: Addison-Wesley, 1954. [5]M. Sacoto and E. Mosquera, «Apego y sexismo en población adulta entre 18 y 60 años en Quito, Ecuador [Apego y sexismo en población adulta entre 18 y 60años en Quito, Ecuador],» Ciencias Psicológicas, vol. 15, nº 2, p. 2302, 2021. [6]F. Tougas, R. Brown, A. Beaton and S. Joly, «Neosexism: Plus ca change, plus c'est pareil.,» Personality and Social Psychology Bulletin, vol. 21, pp. 842-850,1995. [7]J. Swim, W. Aikin, W. HaII and B. Hunter, «Sexism, and Racism: Old-fashioned and Modern Prejudices.,» Journal of Personality and Social Psychology, vol. 8, nº2, pp. 199-214, 1995. [8]P. Glick and S. T. Fiske, «The Ambivalence toward Men Inventory: Differentiating hostile and benevolent beliefs about men,» Psychology of Women Quarterly,vol. 23, pp. 519-536, 1999. [9]J. McConahay, «Modern racism, ambivalence, and the modern racism scale.,» Prejudice, discrimination, and racism, vol. 1, pp. 91-125, 1986. [10]S. Ubillos-Landa, E. Goiburu-Moreno, A. Puente-Martínez and J. Pizarro-Ruiz, «Influence in sex education programs: An empirical study,» Revista de Psicodidactica, vol. 26, nº 2, pp. 123-131, 2021. [11]J. Cardona, L. Casas, S. Cañon, J. Castaño, A. Godoy, D. Henao and L. Valencia, «Sexismo y concepciones de la violencia de género contra la mujer en cuatro universidades de la ciudad de Manizales,» Archivos de Medicina, vol. 15, nº 2, pp. 200-219, 2015. [12] P. Rotaeche, J. Alboniga-Mayor, and N. Mondragon, «Representations of sexism in higher education and professional training,» Educacion XX1, vol. 24, nº 2, pp. 421-440, 2021. [13]J. Rojas and E. Carpintero, «Sexismo y agresiones físicas, sexuales y verbales-emocionales, en relaciones de noviazgo de estudiantes universitarios,» Electronic Journal of Research in Educational Psychology, vol. 9, nº 2, pp. 541-564, 2011. [14]C. Carpio, E. Bonilla-Algovia and M. Carrasco, «Ambivalent sexism in adolescents of castilla-la mancha,» Revista de Educacion, vol. 392, pp. 91-114, 2021. [15]C. Cruz Torres, F. Correa Romero and J. Padilla Bautista, «Sexism, fear of negative evaluation and destructive communication in the couple,» Revista de Psicologia, vol. 39, nº 1, pp. 9-34, 2021. [16]M. Lameiras-Fernández and Y. Rodríguez-Castro, «Evaluación del sexismo moderno en adolescentes,» Revista de Psicología Social, vol. 17, pp. 119-127, 2002. [17]M. Lameiras-Fernández and Y. Rodríguez-Castro, «Evaluación del sexismo ambivalente en estudiantes gallegos/as,» Acción Psicológica, vol. 2, nº 2, pp. 131-136, 2003. [18]S. De Lemus, M. Moya and P. Glick, «When Contact Correlates with Prejudice: Adolescents’ Romantic Relationship Experience Predicts Greater Benevolent Sexism in Boys and Hostile Sexism in Girls,» Sex Roles, vol. 63, nº 3-4, pp. 214-216, 2010. [19]M. Sánchez-Hernández, M. Herrera-Enríquez and F. Expósito, «Controlling Behaviors in Couple Relationships in the Digital Age: Acceptability of Gender Violence, Sexism, and Myths about Romantic Love,» Psychosocial Intervention, vol. 29, nº 2, pp. 67-81, 2021. [20]C. Diaz, M. Rosas and M. Gonzáles, «Escala de Machismo Sexual (EMS-Sexismo-12): diseño y análisis,» SUMMA Psicológica UST, vol. 7, nº 2, pp. 35-44, 2010. [21]H. Alvarado and C. Batanero, «Significado del Teorema Central del Límite en textos universitarios de probabilidad y estadística,» Estudios Pedagógicos, vol. 34, nº 2, pp. 7-28, 2008.Se presenta un estudio que analizó las características del machismo sexual; se utilizó una metodología descriptiva, no experimental de corte transversal. La muestra estuvo compuesta por 3004 estudiantes universitarios escogidos aleatoriamente. Se utilizó una escala de medición con 12 ítems que permitieron entender la situación actual de los estudiantes en relación con el machismo sexual. Los resultados indican que el machismo sexual en estudiantes universitarios es de nivel bajo, se encontraron diferencias estadísticamente significativas entre hombres y mujeres, sin embargo, ambos grupos presentan puntajes bajos. Asimismo, existen diferencias del machismo sexual por carrera profesional, donde los estudiantes de ingenierías puntúan más alto que los estudiantes de ciencias sociales y que la edad correlaciona de forma directa y baja con la variable de estudio. Palabras Clave: Machismo sexual, sexismo, estudiantes, universidad. &nbsp

Optimized expression of Plasmodium falciparum erythrocyte membrane protein 1 domains in Escherichia coli

BACKGROUND: The expression of recombinant proteins in Escherichia coli is an important and frequently used tool within malaria research, however, this method remains problematic. High A/T versus C/G content and frequent lysine and arginine repeats in the Plasmodium falciparum genome are thought to be the main reason for early termination in the mRNA translation process. Therefore, the majority of P. falciparum derived recombinant proteins is expressed only as truncated forms or appears as insoluble inclusion bodies within the bacterial cells. METHODS: Several domains of PfEMP1 genes obtained from different P. falciparum strains were expressed in E. coli as GST-fusion proteins. Expression was carried out under various culture conditions with a main focus on the time point of induction in relation to the bacterial growth stage. RESULTS AND CONCLUSIONS: When expressed in E. coli recombinant proteins derived from P. falciparum sequences are often truncated and tend to aggregate what in turn leads to the formation of insoluble inclusion bodies. The analysis of various factors influencing the expression revealed that the time point of induction plays a key role in successful expression of A/T rich sequences into their native conformation. Contrary to recommended procedures, initiation of expression at post-log instead of mid-log growth phase generated significantly increased amounts of soluble protein of a high quality. Furthermore, these proteins were shown to be functionally active. Other factors such as temperature, pH, bacterial proteases or the codon optimization for E. coli had little or no effect on the quality of the recombinant protein, nevertheless, optimizing these factors might be beneficial for each individual construct. In conclusion, changing the timepoint of induction and conducting expression at the post-log stage where the bacteria have entered a decelerated growth phase, greatly facilitates and improves the expression of sequences containing rare codons

Functional diversity of riparian woody vegetation is less affected by river regulation in the Mediterranean than Boreal

Original ResearchRiver regulation may filter out riparian plants often resulting in reduced functional diversity, i.e., in the range of functions that organisms have in communities and ecosystems. There is, however, little empirical evidence about the magnitude of such reductions in different regions. We investigated the functional diversity patterns of riparian woody vegetation to streamflow regulation in boreal Sweden and Mediterranean Portugal using nine plant functional traits and field data from 109 sampling sites. We evaluated changes in mean plant functional traits as well as in indices of multidimensional functional traits, i.e., functional richness (FRic) and functional redundancy (FRed) within regions and between free-flowing and regulated river reaches. We found that regulation significantly reduced functional diversity in Sweden but not in Portugal. In Sweden, the increased magnitude of variations in water flow and water level in summer, the prolonged duration of extreme hydrological events, the increased frequency of high-water pulses, and the rate of change in water conditions were the likely main drivers of functional diversity change. Small riparian plant species with tiny leaves, poorly lignified stems, and shallow root systems were consistently associated with regulated sites in the boreal region. In Portugal, the similar functional diversity values for free-flowing and regulated rivers likely stem from the smaller streamflow alterations by regulation combined with the species legacy adaptations to the Mediterranean natural hydrological regimes. We conclude that streamflow regulation may reduce the functional diversity of riparian woody vegetation, but the magnitude of these effects will vary depending on the adaptations of the local flora and the patterns of streamflow disturbances. Our study provides insights into functional diversity patterns of riparian woody vegetation affected by regulation in contrasting biomes and encourages further studies of the functional diversity thresholds for maintaining ecosystemsinfo:eu-repo/semantics/publishedVersio

A Molecular Link between Malaria and Epstein–Barr Virus Reactivation

Although malaria and Epstein–Barr (EBV) infection are recognized cofactors in the genesis of endemic Burkitt lymphoma (BL), their relative contribution is not understood. BL, the most common paediatric cancer in equatorial Africa, is a high-grade B cell lymphoma characterized by c-myc translocation. EBV is a ubiquitous B lymphotropic virus that persists in a latent state after primary infection, and in Africa, most children have sero-converted by 3 y of age. Malaria infection profoundly affects the B cell compartment, inducing polyclonal activation and hyper-gammaglobulinemia. We recently identified the cystein-rich inter-domain region 1α (CIDR1α) of the Plasmodium falciparum membrane protein 1 as a polyclonal B cell activator that preferentially activates the memory compartment, where EBV is known to persist. Here, we have addressed the mechanisms of interaction between CIDR1α and EBV in the context of B cells. We show that CIDR1α binds to the EBV-positive B cell line Akata and increases the number of cells switching to the viral lytic cycle as measured by green fluorescent protein (GFP) expression driven by a lytic promoter. The virus production in CIDR1α-exposed cultures was directly proportional to the number of GFP-positive Akata cells (lytic EBV) and to the increased expression of the EBV lytic promoter BZLF1. Furthermore, CIDR1α stimulated the production of EBV in peripheral blood mononuclear cells derived from healthy donors and children with BL. Our results suggest that P. falciparum antigens such as CIDR1α can directly induce EBV reactivation during malaria infection that may increase the risk of BL development for children living in malaria-endemic areas. To our knowledge, this is the first report to show that a microbial protein can drive a latently infected B cell into EBV replication

Logística de distribución de productos perecederos fuente de oro (Meta) y Viotá (Cundinamarca)

Red Estructural, Diagrama de FlujoA partir de los diecisiete (17) Objetivos de Desarrollo Sostenible adoptados por las Asamblea General de las Naciones Unidas (2015) en Nueva York [1], en su Objetivo No. 2 que corresponde a Hambre cero, las consideraciones sobre cómo se debe administrar la cadena de suministro para los productos agrícolas han tomado tal relevancia, que en la actualidad se habla de las CSA – Cadenas de Suministro Agroalimentarias [As of seventeen (17) Sustainable Development Goals adopted by the United Nations General Assembly (2015) in New York [1], in Objective No. 2 corresponding to Zero Hunger, considerations on how to administer The supply chain for agricultural products has taken on such relevance, that at present there is talk of CSA - Agrifood Supply Chains [2]. The CSAs, for their analysis, involve the activities carried out in sequence, from the productive centers - farms - to the consumer's table, going through all the stages of activities of the typical supply chains

Effect of Acute Plasmodium falciparum Malaria on Reactivation and Shedding of the Eight Human Herpes Viruses

Human herpes viruses (HHVs) are widely distributed pathogens. In immuno-competent individuals their clinical outcomes are generally benign but in immuno-compromised hosts, primary infection or extensive viral reactivation can lead to critical diseases. Plasmodium falciparum malaria profoundly affects the host immune system. In this retrospective study, we evaluated the direct effect of acute P. falciparum infection on reactivation and shedding of all known human herpes viruses (HSV-1, HSV-2, VZV, EBV, CMV, HHV-6, HHV-7, HHV-8). We monitored their presence by real time PCR in plasma and saliva of Ugandan children with malaria at the day of admission to the hospital (day-0) and 14 days later (after treatment), or in children with mild infections unrelated to malaria. For each child screened in this study, at least one type of HHV was detected in the saliva. HHV-7 and HHV-6 were detected in more than 70% of the samples and CMV in approximately half. HSV-1, HSV-2, VZV and HHV-8 were detected at lower frequency. During salivary shedding the highest mean viral load was observed for HSV-1 followed by EBV, HHV-7, HHV-6, CMV and HHV-8. After anti-malarial treatment the salivary HSV-1 levels were profoundly diminished or totally cleared. Similarly, four children with malaria had high levels of circulating EBV at day-0, levels that were cleared after anti-malarial treatment confirming the association between P. falciparum infection and EBV reactivation. This study shows that acute P. falciparum infection can contribute to EBV reactivation in the blood and HSV-1 reactivation in the oral cavity. Taken together our results call for further studies investigating the potential clinical implications of HHVs reactivation in children suffering from malaria

Study protocol of effectiveness of a biopsychosocial multidisciplinary intervention in the evolution of non-speficic sub-acute low back pain in the working population : cluster randomised trial

Background: Non-specific low back pain is a common cause for consultation with the general practitioner, generating increased health and social costs. This study will analyse the effectiveness of a multidisciplinary intervention to reduce disability, severity of pain, anxiety and depression, to improve quality of life and to reduce the incidence of chronic low back pain in the working population with non-specific low back pain, compared to usual clinical care. Methods/Design: A Cluster randomised clinical trial will be conducted in 38 Primary Health Care Centres located in Barcelona, Spain and its surrounding areas. The centres are randomly allocated to the multidisciplinary intervention or to usual clinical care. Patients between 18 and 65 years old (n = 932; 466 per arm) and with a diagnostic of a non-specific sub-acute low back pain are included. Patients in the intervention group are receiving the recommendations of clinical practice guidelines, in addition to a biopsychosocial multidisciplinary intervention consisting of group educational sessions lasting a total of 10 hours. The main outcome is change in the score in the Roland Morris disability questionnaire at three months after onset of pain. Other outcomes are severity of pain, quality of life, duration of current non-specific low back pain episode, work sick leave and duration, Fear Avoidance Beliefs and Goldberg Questionnaires. Outcomes will be assessed at baseline, 3, 6 and 12 months. Analysis will be by intention to treat. The intervention effect will be assessed through the standard error of measurement and the effect-size. Responsiveness of each scale will be evaluated by standardised response mean and receiver-operating characteristic method. Recovery according to the patient will be used as an external criterion. A multilevel regression will be performed on repeated measures. The time until the current episode of low back pain takes to subside will be analysed by Cox regression. Discussion: We hope to provide evidence of the effectiveness of the proposed biopsychosocial multidisciplinary intervention in avoiding the chronification of low back pain, and to reduce the duration of non-specific low back pain episodes. If the intervention is effective, it could be applied to Primary Health Care Centres

Desafíos actuales de la educación superior

El presente libro corresponde al trabajo investigativo realizado por sus autores frente a los desafíos que enfrenta y enfrentará la educación en tiempos actuales (provisional)

Functional Diversity of Riparian Woody Vegetation Is Less Affected by River Regulation in the Mediterranean Than Boreal Region

River regulation may filter out riparian plants often resulting in reduced functional diversity, i.e., in the range of functions that organisms have in communities and ecosystems. There is, however, little empirical evidence about the magnitude of such reductions in different regions. We investigated the functional diversity patterns of riparian woody vegetation to streamflow regulation in boreal Sweden and Mediterranean Portugal using nine plant functional traits and field data from 109 sampling sites. We evaluated changes in mean plant functional traits as well as in indices of multidimensional functional traits, i.e., functional richness (FRic) and functional redundancy (FRed) within regions and between free-flowing and regulated river reaches. We found that regulation significantly reduced functional diversity in Sweden but not in Portugal. In Sweden, the increased magnitude of variations in water flow and water level in summer, the prolonged duration of extreme hydrological events, the increased frequency of high-water pulses, and the rate of change in water conditions were the likely main drivers of functional diversity change. Small riparian plant species with tiny leaves, poorly lignified stems, and shallow root systems were consistently associated with regulated sites in the boreal region. In Portugal, the similar functional diversity values for free-flowing and regulated rivers likely stem from the smaller streamflow alterations by regulation combined with the species legacy adaptations to the Mediterranean natural hydrological regimes. We conclude that streamflow regulation may reduce the functional diversity of riparian woody vegetation, but the magnitude of these effects will vary depending on the adaptations of the local flora and the patterns of streamflow disturbances. Our study provides insights into functional diversity patterns of riparian woody vegetation affected by regulation in contrasting biomes and encourages further studies of the functional diversity thresholds for maintaining ecosystems