Parental Education Sets the Expectation

First-generation students are worse than their non-first generation peers in their ability to recognize and respond to faculty members’ expectations (Collier & Morgan, 2008). Further, first-generation students have a lower sense of self-efficacy (Hellman, 1996) and lower self esteem(McGregor, Mayleben, Buzzanga, Davis, & Becker, 1991) than other students. I expected first generation students to more inaccurately predict how they will perform on their first introduction to psychology exam compared to their non-first generation student peers. I also expected first generation students to place a higher value of importance on their exam and experience higher levels of depression than their non-first generation student peers after the exam. We use a framework that investigates the relationship between parent’s educational attainment and college student’s educational expectations. We further this investigation by exploring how first generation status influences exam importance prior to a midterm and levels of depression experienced after the midterm. College students (N = 1435) reported their expectations and reactions before and shortly after, their midterm exam in an introductory course. They reported their expectations about how they would perform on the exam, the importance of the exam, and their depression. We examined how first generation status influenced each of these three variables. We expected first generation students to report more inaccurate expectations on exam performance, higher levels of exam importance, and higher levels of depression. Our hypothesis attempted to bridge the limited research on first generation expectations to the literature on first generation student’s well-being. First generation students and their non-first generation peers differed in their expectations and actual exam performance. First generation students reported lower expectations and performed worse than their non-first generation peers. Whether or not students were the first in their family to attend college did not affect the accuracy of their expectations for their midterm grade. First generation students and their non-first generation peers were similarly inaccurate in predicting their exam performance. Students who were first generation did differ from other students in the importance placed on the exam, and they experienced higher levels of depression after the exam

Assessment of genetic relationship in Persea spp by traditional molecular markers

Currently, the reclassification of the genus Persea is under discussion with molecular techniques for DNA analysis representing an alternative for inter- and intra-specific differentiation. In the present study, the traditional random-amplified polymorphic DNA (RAPD) and the inter simple sequence repeat (ISSR) markers were used to determine the genomic relationship of different species and hybrids representative of the subgenera Eriodaphne and Persea in a population conserved in a germplasm bank. The data were analyzed statistically using multivariate methods. In the RAPD analysis, a total of 190 polymorphic bands were produced, with an average of 23.7 bands per primer, the percentage contribution of each primer was from 7.66 to 19.63; the polymorphic information content (PIC) ranged from 0.23 to 0.45, with an average of 0.35. In the ISSR analysis, a total of 111 polymorphic bands were considered, with an average of 18.5 bands per primer, the percentage contribution of each was from 11.83 to 19.57; the PIC ranged from 0.35 to 0.48, with an average of 0.42. The phenograms obtained in each technique showed the relationship among the accessions through the clusters formed. In general, J.C. Reyes-Alemán et al. 2 Genetics and Molecular Research 15 (2): gmr.15027359 ©FUNPEC-RP www.funpecrp.com.br both the techniques grouped representatives of the Persea americana races (P. americana var. drymifolia, P. americana var. guatemalensis, and P. americana var. americana). However, it was not possible to separate the species of Persea used as reference into independent clades. In addition, they tended to separate the representatives of subgenera Eriodaphne and Persea

Curvas puntuadas con semigrupo de Weierstrass simétrico

Plantea mejorar el teorema Max Noether a través de la construcción de la compactación, donde el espacio de modulo original se ve como un abrir en un espacio más grande, permitiendo que las curvas admitan singularidades, siempre que éstas sean GorensteinConsejo Nacional de Desarrollo Científico y Tecnológico - CNPqTrabajo de investigació

Curvas puntuadas con semigrupo de Weierstrass simétrico

Trabajo de investigaciónPlantea mejorar el teorema Max Noether a través de la construcción de la compactación, donde el espacio de modulo original se ve como un abrir en un espacio más grande, permitiendo que las curvas admitan singularidades, siempre que éstas sean GorensteinConsejo Nacional de Desarrollo Científico y Tecnológico - CNPqTrabajo de investigació

Participación criminal

Es un hecho punible pueden haber participado varias personas. A simple vista este concepto se ve inteligible para todos, no obstante, encierra una teoría difícil e importante de la porte genera del Derecho Penal que es la teoría de la Participación. Con frecuencia el Delito se nos presente como el resultado de la cooperación de varios delincuentes y según el estudio de Estadísticas Criminales, su frecuencia es mas acentuada en los delitos graves, siendo los que se asocian los criminales mas temibles, reincidentes y los profesionales. La responsabilidad criminal es siempre estrictamente personal e individual; aunque la voluntad o la ejecución del acto delictivo se divida, alcanzando a cada uno de los participantes como tales, guardando una relación proporcional entre el acto ejecutado y la totalidad del efecto querido y obtenido. Hemos manifestado anteriormente que en un hecho pueden haber participado varias personas, planteándose con ello la cuestión fundamental de la teoría de la Participación

Hydroxyapatite-based biphasic catalysts with plasticity properties and its potential in carbon dioxide fixation

The design of catalysts with controlled selectivity at will, also known as catalytic plasticity, is a very attractive approach for the recycling of carbon dioxide (CO2). In this work, we study how catalytically active hydroxyapatite (HAp) and brushite (Bru) interact synergistically, allowing the production of formic acid or acetic acid depending on the HAp/Bru ratio in the catalyst. Raman, wide angle X-ray scattering, X-ray photoelectron spectroscopy, scanning electron microscopy and electrochemical impedance spectroscopy studies, combined with an exhaustive revision of the crystalline structure of the catalyst at the atomic level, allowed to discern how the Bru phase can be generated and stabilized at high temperatures. Results clearly indicate that the presence of OH– groups to maintain the crystalline structural integrity in conjunction with Ca2+ ions less bonded to the lattice fixate carbon into C1, C2 and C3 molecules from CO2 and allow the evolution from formic to acetic acid and acetone. In this way, the plasticity of the HAp-Bru system is demonstrated, representing a promising green alternative to the conventional metal-based electrocatalysts used for CO2 fixation. Thus, the fact that no electric voltage is necessary for the CO2 reduction has a very favorable impact in the final energetic net balance of the carbon fixation reaction. © 202

Computer simulations on oxidative stress-induced reactions in SARS-CoV-2 spike glycoprotein: a multi-scale approach

Oxidative stress, which occurs when an organism is exposed to an adverse stimulus that results in a misbalance of antioxidant and pro-oxidants species, is the common denominator of diseases considered as a risk factor for SARS-CoV-2 lethality. Indeed, reactive oxygen species caused by oxidative stress have been related to many virus pathogenicity. In this work, simulations have been performed on the receptor binding domain of SARS-CoV-2 spike glycoprotein to study what residues are more susceptible to be attacked by ·OH, which is one of the most reactive radicals associated to oxidative stress. The results indicate that isoleucine (ILE) probably plays a crucial role in modification processes driven by radicals. Accordingly, QM/MM-MD simulations have been conducted to study both the ·OH-mediated hydrogen abstraction of ILE residues and the induced modification of the resulting ILE radical through hydroxylation or nitrosylation reactions. All in all, in silico studies show the importance of the chemical environment triggered by oxidative stress on the modifications of the virus, which is expected to help for foreseeing the identification or development of antioxidants as therapeutic drugs. Graphic abstrac

IgG1-b12–HIV-gp120 Interface in Solution: A Computational Study

[Image: see text] The use of broadly neutralizing antibodies against human immunodeficiency virus type 1 (HIV-1) has been shown to be a promising therapeutic modality in the prevention of HIV infection. Understanding the b12–gp120 binding mechanism under physiological conditions may assist the development of more broadly effective antibodies. In this work, the main conformations and interactions between the receptor-binding domain (RBD) of spike glycoprotein gp120 of HIV-1 and the IgG1-b12 mAb are studied. Accelerated molecular dynamics (aMD) and ab initio hybrid molecular dynamics have been combined to determine the most persistent interactions between the most populated conformations of the antibody–antigen complex under physiological conditions. The results show the most persistent receptor-binding mapping in the conformations of the antibody–antigen interface in solution. The binding-free-energy decomposition reveals a small enhancement in the contribution played by the CDR-H3 region to the b12–gp120 interface compared to the crystal structure

Producción hidropónica de tomate (Solanum lycopersicum) y chiltoma (Capsicum annuum) con sustratos inertes

Esta investigación mide el efecto del uso de sustratos hidropónicos en plantas de Solanum lycopersicum y Capsicum annuum. Este estudio experimental con enfoque cuantitativo analizo la variabilidad fenológica, productiva y relación de costo beneficio en los cultivos con relación a cada sustrato. Para ambos cultivos se establecieron cuatro tratamientos T1= Arena (50%) + Afrecho de arroz (50%), T2= Afrecho de arroz (100%), T3= Aserrín (50%) + Arena (50%), T4= Tierra (100%). Para cada tratamiento se establecieron 40 plantas (20 de Solanum lycopersicum y 20 de Capsicum annuum). Se tomó el 100% de las plantas para muestreo semanal. A partir del día ocho posterior a la emergencia y durante cuatro meses se cuantificaron variables de altura, diámetro del tallo, número de ramas y hojas, productividad (flores, frutos, biomasa). Con resultados significativos (P-valor: 0.05) con el tratamiento T1 y T3 tanto en variables fenológicas, morfométricas y productivas en ambas especies vegetales. En tanto, los tratamientos T2 y T4 registraron rendimientos productivos no significativos. En la prueba de comparación de medias independientes para la producción, se encontraron diferencias estadísticas significativas entre tratamientos T1 con 4 kg de producción/ planta, y 25 kg de producción/m2

Combining 2D organic and 1D inorganic nanoblocks to develop free-standing hybrid nanomembranes for conformable biosensors

We report a simple approach to fabricate free-standing perforated 2D nanomembranes hosting well-ordered 1D metallic nanostructures to obtain hybrid materials with nanostructured surfaces for flexible electronics. Nanomembranes are formed by alternatively depositing perforated poly(lactic acid) (PLA) and poly(3,4-ethylenedioxythiophene) layers. Copper metallic nanowires (NWs) were incorporated into the nanoperforations of the top PLA layer by electrodeposition and further coated with silver via a transmetallation reaction. The combination of 2D polymeric nanomembranes and aligned 1D metallic NWs allows merging the flexibility and conformability of the ultrathin soft polymeric nanomembranes with the good electrical properties of metals for biointegrated electronic devices. Thus, we were able to tailor the nanomembrane surface chemistry as it was corroborated by SEM, EDX, XPS, CV, EIS and contact angle. The obtained hybrid nanomembranes were flexible and conformable showing sensing capacity towards H2O2 with good linear concentration range (0.35–10 mM), sensitivity (120 µA cm?2 mM?1) and limit of detection (7 ?m). Moreover, the membranes showed good stability, reproducibility and selectivity towards H2O2