Response of soybean stem termination types to water stress and supplemental irrigation

This dissertation reports two investigations. One was conducted at Ames, Iowa, during 1980 and 1981, with the aim of evaluating the response of soybean Glycine max (L.) Merr. stem termination types (indeterminate, semideterminate, determinate) to supplemental irrigation during seed growth. The second was done in Costa Rica from February to May (field) and from August to November (glasshouse), 1982. The objective of the second study was to evaluate the response of water stress of tropical determinate and indeterminate soybean cultivars. Because of their ability to continue growth during early reproduction, indeterminates should recover from stress better and respond better to irrigation;The nonirrigated Iowa soybean crop had lower predawn and midday water potentials during seed filling and significantly lower yield than the irrigated soybean crop. However, there was no difference in response of the stem termination types to supplemental irrigation. Average yield response to irrigation was 16.4%. Seed yield increase in response to irrigation of determinates and semideterminates was mostly due to increased number of pods per node, whereas, with indeterminates, it resulted partly from increased pods per node and partly from increased nodes. Indeterminates grew more and lodged more under irrigation than did semideterminates; the determinate types did not lodge at all;The study conducted in Costa Rica showed that field-grown soybean plants under stress had predawn water potentials within -0.1 to -0.2 MPa of well-watered controls after water had been withheld one week. Stomata showed the greatest decrement in water vapor conductance at water potentials between -1.3 and -1.4 MPa. Under moderate to severe stress, stomata on the adaxial surface completely closed early in the drying cycle;Indeterminate cultivars were better able to recover from water stress than were determinate ones, as indicated by better seed yield under field conditions. This response was associated with the number of pods per node rather than with other basic yield components, or with leaf area index or leaf area duration;Environmental conditions in the glasshouse induced determinateness in the indeterminate cultivar; consequently, it responded to water stress the same as the determinate cultivar

The Mental Health of Latinx Adults in the United States During the Coronavirus Pandemic: A Snapshot of Anxiety, Depression, and Posttraumatic Stress Symptoms

The current study documented levels of anxiety, depression, posttraumatic stress, and COVID-19 fears and impacts among Latinxs in the U.S. during the COVID-19 pandemic. Participants of this cross-sectional study were 388 Latinx adults who completed an online survey between June and November 2020. Almost half of participants showed clinical levels of anxiety and depression and more than a quarter of participants showed clinical levels of posttraumatic stress. Latinxs reported on average 22 types of negative pandemic life impacts. Group differences based on gender, educational attainment, income, vulnerability to COVID-19, and essential worker status were found for mental health symptoms. Severity of COVID-19 fears and negative life impact counts were related to gender, nativity, educational attainment, vulnerability to COVID-19, and insurance status. Specific Latinx groups experienced greater levels of psychological distress during the pandemic. Further examination of risk and protective factors is needed for communities of color

Significados de la sexualidad en jóvenes aspirantes a la vida religiosa

La presente investigación pretende explorar los significados de la sexualidad en jóvenes aspirantes a la vida religiosa, para lo cual se utilizó una metodología cualitativa. El número de participantes fue de 30 jóvenes (29 mujeres y 1 hombre) cuyas edades fluctuaron entre los 18 y 24 años. Se realizó un taller de sensibilización al tema de la sexualidad, dibujos y cuentos en relación al mismo tema y entrevistas individuales. Los resultados encontrados acerca de los significados de la sexualidad giran en torno a la negación del cuerpo y el placer, la irrupción de lo impulsivo, el terror a la sexualidad y el silencio de la misma. Esto estaría relacionado a la ausencia de figuras parentales cuidadoras, la educación religiosa brindada y, por último, a la idealización y espiritualización de la vida consagrada.Tesi

Perfil del docente tutor y su fortalecimiento con la educación sexual en instituciones educativas de Nuevo Chimbote, 2022

El estudio tuvo como objetivo determinar en qué medida y de qué manera se relaciona el perfil del docente tutor y su fortalecimiento con la educación sexual en los estudiantes de las instituciones educativas Nuevo Chimbote-2022. La metodología fue mixta de corte transversal, se aplicaron dos encuestas para medir las variables, en una muestra estratificada de 289 estudiantes de dos Instituciones Educativas de Nuevo Chimbote, Ancash. Así mismo, se efectuó una entrevista a 10 docentes tutores de las mismas Instituciones Educativas. Se determinó que existe una relación significativa entre las variables Perfil del Docente Tutor y Educación Sexual 0.01 (p=0.000<0.01), así también el signo del coeficiente de correlación de Rho de Spearman presentó un signo positivo, por lo tanto, la relación es directa, cuya fuerza de asociación es alta positiva. En el estudio se llegó a determinar que 40.5% de estudiantes de las instituciones educativas de Chimbote, percibieron en nivel regular, y el 45.3% un nivel bueno del Perfil del Docente tutor, por lo que se considera que en temas de educación sexual los tutores necesitan mayor capacitación para poder impartir aprendizajes significati

Reactivación de virus Herpes Simplex 1 en pacientes COVID-19 en unidades de cuidado intensivo: importancia en la evolución clínica del paciente

80% of SARS-CoV-2 cases present as an uncomplicated or asymptomatic respiratory infection; However, the disease has a wide clinical spectrum that includes 15% of severe respiratory conditions that require medical attention and a mortality that ranges between 3-4% worldwide. Severe SARS-CoV-2 infection has been associated with compromised immune response, which favors co-infection with other medically important agents and with the reactivation of latent viruses, mainly of the Herpesviridae family (Herpes simplex type 1 and 2), Varicella Zoster Virus, Cytomegalovirus, Herpes 6. In Costa Rica there is no report on the possible reactivation of Herpes simplex Virus in COVID-19 patients admitted to the Intensive Care Unit. Therefore, it is recommended to carry out institutional protocols for the adequate and timely diagnosis of these viral infections and weekly monitoring with HSV-1 viral loads in respiratory samples from patients with mechanical ventilation.El 80% de los casos de SARS-CoV-2 se presenta como una infección respiratoria no complicada o asintomática; no obstante, la enfermedad presenta un amplio espectro clínico que incluye un 15% de cuadros respiratorios severos que requieren atención médica y&nbsp; una mortalidad que oscila entre el 3-4% a nivel mundial. Se ha asociado la infección severa por SARS-CoV-2 con el compromiso de la respuesta inmune, lo que favorece la co-infección con otros agentes de importancia médica y con la reactivación de virus latentes principalmente de la familia Herpesviridae (Herpes simplex tipo 1 y 2), Virus Varicela Zoster, Citomegalovirus, Herpes 6. En Costa Rica no existe ningún reporte sobre la posible reactivación de Virus Herpes simplex en pacientes COVID-19 internados en Unidad de Cuidados Intensivos. Por lo tanto, se recomienda la realización de protocolos institucionales para el adecuado y oportuno diagnóstico de estas infecciones virales y el monitoreo semanal con cargas virales de HSV-1 en muestras respiratorias de pacientes con ventilación mecánica.&nbsp

Análisis estructural de sectores estratégicos : sector de exhibición de filmes y videocintas

El análisis estructural de sectores estratégicos (AESE) es una propuesta útil para los directores y gerentes de empresas, ya que les permite percibir mejor el entorno en que compiten sus organizaciones. De igual forma, contribuye a reducir la incertidumbre en los momentos de tomar decisiones. En este texto se analizará el sector de exhibición de filmes y videocintas en Colombia en el período comprendido entre el 2006 y el 2010. A pesar de que existen muchas empresas en este sector, solo se observaron las más representativas: Cine Colombia, Cinemark y Procinal. Se aplicarán las herramientas que proporciona el AESE: hacinamiento cuantitativo y cualitativo, panorama competitivo, fuerzas del mercado y estudio de competidores, entre otras. En el sector existen tres categorías: productores, exhibidores y distribuidores; el análisis se enfocará en la de exhibidores o dueños de teatros..

Mejora aplicada en el área de producto de una agencia de viajes

Esta investigación tuvo por objetivo la mejora empresarial de una agencia de viajes, específicamente en su área de producto. Esto fue posible a partir de un estudio de caso descriptivo orientado a la acción propositiva que genere valor como investigación académica y como propuesta de mejora para la compañía. Para ello fueron empleadas técnicas y herramientas de la ingeniería industrial y áreas afines.The objective of this research was the business improvement of a travel agency, specifically in its product area. This was possible from a descriptive case study oriented to propositional action that generates value as academic research and as an improvement proposal for the company. For this, techniques and tools from industrial engineering and related areas were used

How did Latinxs near the U.S.-Mexico border fare during the COVID-19 pandemic? A snapshot of anxiety, depression, and posttraumatic stress symptoms

IntroductionThe current study documented levels of anxiety, depression, posttraumatic stress, and COVID-19 fears and impacts among Latinxs living near the U.S.-Mexico border during the COVID-19 pandemic.MethodsParticipants of this cross-sectional study were 305 Latinx adults living in the Rio Grande Valley (RGV) who completed an online survey between June and November 2020.ResultsAbout half of participants scored above the cut-off for anxiety (50.2%; GAD-7 scores ≥10) and depression (48.8%; PHQ-9 scores ≥10), and more than a quarter of participants showed clinical levels of posttraumatic stress (27.3%; PCL-5 scores ≥31). Latinxs reported on average 22 types of negative pandemic life impacts on the Epidemic-Pandemic Impacts Inventory. Endorsement of mental health symptoms, severity of COVID-19 fears, and COVID-related life impacts varied based on several demographic characteristics including gender, marital status, educational attainment, employment, income, insurance coverage, vulnerability to COVID-19, and essential worker status.DiscussionOverall, the cross-sectional results of this study revealed that RGV Latinx residents experienced high levels of psychological distress during the pandemic. Results suggest that Latinx women were most affected by the psychological consequences of the pandemic. More research is needed with communities living near the U.S.-Mexico border as they may be particularly vulnerable to mental health problems during the pandemic

Factorial Invariance of Self-efficacy in Physical Health Care Scale for Men and Women University Students

The present study analyses the psychometric properties of the Selfefficacy in Physical Health Care Scale. The overall sample consisted of 2006 subjects: 902 women and 1104 men, with a mean age of 18.53 years (SD= 1.52) and 18.84 years (SD= 1.55) respectively. The Factorial Psychometric analysis showed that a three-factorial structure (nutrition, physical health and hydration) was viable and adequate for both populations (men and woman) according to the established psychometric requirements when the informers are the students themselves. The results showed that factor structure, factor loadings and intercepts of the instrument could be considered invariant across groups; however, there are differences between groups in favor of men for the means of the nutrition and physical health factors

Physicochemical and chromatographic method of characterization of Matricaria recutita tinctures

Context: The pharmacological activity of medicinal products containing plant materials depends on their specific components. However, these components are not characterized in their entirety in all cases. Therefore, manufacturing processes must be duly characterized and validated. Aims: To characterize a chamomile (Matricaria recutita) tincture through chemometric analysis of chromatographic data in order to establish quality parameters for its production. Methods: Various chamomile tinctures were manufactured and the precision and robustness of the production process for each was verified. The physicochemical properties of the tinctures were characterized and their chromatographic digital fingerprints analysed through chemometric methods. Results: A good correlation between the physicochemical characterization and the chromatographic analysis was demonstrated. The preparation methodology was proved to be repeatable as long as the source of the plant material is not altered. Conclusions: The principal component multivariate analysis of chromatograms was a helpful and simple tool for the characterization and traceability of the production method.Consejo Nacional de Rectores/[CNR-351-08]/CONARE/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias de la Salud::Instituto de Investigaciones Farmacéuticas (INIFAR