Enhanced Power Generation Using a Dual-Surface-Modified Hematite Photoanode in a Direct Glyphosate Photo Fuel Cell.

Given the current and escalating global energy and environmental concerns, this work explores an innovative approach to mitigate a widely employed commercial herbicide using a direct glyphosate (Gly) photocatalytic fuel cell (PFC). The device generates power continuously by converting solar radiation, degrading and mineralizing commercial glyphosate-based fuel, and reducing sodium persulfate at the cathode. Pristine and modified hematite photoanodes were coupled to Pt/C nanoparticles dispersed in a carbon paper (CP) support (Pt/C/CP) dark cathode by using an H-type cell. The Gly/persulfate PFC shows a remarkable current and power generation enhancement after dual-surface modification of pristine hematite with segregated Hf and FeNiOx cocatalysts. The optimized photoanode elevates maximum current density (Jmax) from 0.35 to 0.71 mA cm-2 and maximum power generation (Pmax) from 0.04 to 0.065 mW cm-2, representing 102.85 and 62.50% increase in Jmax and Pmax, respectively, as compared to pristine hematite. The system demonstrated stability over a studied period of 4 h; remarkably, the photodegradation of Gly proved substantial, achieving ∼98% degradation and ∼6% mineralization. Our findings may significantly contribute to reducing Gly's environmental impact in agribusiness since it may convert the pollutant into energy at zero bias. The proposed device offers a sustainable solution to counteract Gly pollution while concurrently harnessing solar energy for power generation.

[Caring for people living with HIV in the Colombian Health System: patients, caregivers and health workers perspectives]. / Atención de las personas que viven con VIH en el Sistema de Salud Colombiano: perspectivas de pacientes, cuidadores y personal de salud.

OBJECTIVE: Health policies and programs for people living with HIV have been subordinated to current economic policies based on the neoliberal development model that shapes the current healthcare system. The study's objective was to analyze the influence of the Colombian health system on the care of people who lived with HIV enrolled in the Subsidized Regime through Benefit Plan Administrating Entities and treated in Neiva (Colombia). METHODS: A qualitative study framed within the framework of the Critical Discourse Analysis was conducted. Nineteen people participated, including HIV patients, non-formal caregivers, and health workers. The participants were recruited from two Health Service Providers Institutions in the city of Neiva. In-depth interviews were conducted. Data were coded, categorized and organized in Excel for analysis. RESULTS: The interpersonal relationship and the health system functioning were two phenomena that interfered with caring for people with HIV by favoring or imposing barriers to practices. Failures were found in the informative-educational process from the moment of diagnosis, stigmatization, and discrimination, particularly in non-HIV-specialized health institutions, and multiple barriers to access to health services. 55.5% of the patients expressed having been discriminated against by health personnel at some point since their diagnosis. 100% of the patients interviewed identified different types of barriers to health services, contextualized in improper treatment, untimely care and abuse of power; only 22.2% resorted to the filing of complaints, petition rights or guardianships to claim their right to health. CONCLUSIONS: Health care praxis is carried out regardless of patients' situation, forgetting that those from a lower socioeconomic level have greater structural vulnerability related to poverty. The lack of healthcare exacerbates health inequalities.

OBJECTIVE: Las políticas y programas de atención en salud a las personas que viven con VIH han obedecido a las políticas económicas vigentes, basadas en el modelo de desarrollo neoliberal y que configuran el actual sistema de salud. El objetivo de este trabajo fue analizar la influencia del sistema de salud colombiano en la atención de las personas que vivían con VIH afiliadas a las Entidades Administradoras de Planes de Beneficio del Régimen Subsidiado, atendidos en Neiva (Colombia). METHODS: Se realizó un estudio cualitativo, enmarcado en el Análisis Crítico del Discurso. Participaron diecinueve personas entre pacientes con VIH, cuidadores no formales y personal de salud, captados de dos Instituciones Prestadoras de Servicios de Salud de la ciudad de Neiva, a quienes se les aplicó entrevistas en profundidad. Los datos fueron codificados, categorizados y organizados en Excel para su análisis. RESULTS: La relación interpersonal y el funcionamiento del sistema de salud fueron dos fenómenos que interfirieron en la atención de las personas con VIH, en cuanto a que favoreció o impuso barreras a las prácticas. Se encontraron fallos en el proceso informativo/educativo desde el momento del diagnóstico, estigma y discriminación, profundizado en las instituciones de salud no especializadas en VIH, así como múltiples barreras de acceso a los servicios de salud. El 55,5% de los pacientes expresó haber sido discriminados por el personal de salud en algún momento desde su diagnóstico. El 100% de pacientes entrevistados identificó barreras de diferente tipo para los servicios de salud, contextualizados en trato indebido, inoportunidad en la atención y abuso del poder; solo el 22,2% recurrió a la interposición de quejas, derechos de petición o tutelas para reclamar su derecho a la salud. CONCLUSIONS: La praxis de atención se realiza al margen de la situación de contexto de los pacientes, olvidando que son precisamente los ubicados en un nivel socioeconómico más bajo, quienes tienen mayor vulnerabilidad estructural relacionada con la pobreza, por lo que la falta de atención de salud exacerba las inequidades sanitarias.

Atención de las personas que viven con VIH en el Sistema de Salud Colombiano: perspectivas de pacientes, cuidadores y personal de salud / Caring for people living with HIV in the Colombian Health System: patients, caregivers and health workers perspectives

Fundamentos: las políticas y programas de atención en salud a las personas que viven con vih han obedecido a las políticas económicas vigentes, basadas en el modelo de desarrollo neoliberal y que configuran el actual sistema de salud. El objetivo de este trabajo fue analizar la influencia del sistema de salud colombiano en la atención de las personas que vivían con vih afiliadas a las entidades administradoras de planes de beneficio del régimen subsidiado, atendidos en neiva (colombia). Métodos: se realizó un estudio cualitativo, enmarcado en el análisis crítico del discurso. Participaron diecinueve personas entre pacientes con vih, cuidadores no formales y personal de salud, captados de dos instituciones prestadoras de servicios de salud de la ciudad de neiva, a quienes se les aplicó entrevistas en profundidad. Los datos fueron codificados, categorizados y organizados en excel para su análisis.resultados: la relación interpersonal y el funcionamiento del sistema de salud fueron dos fenómenos que interfirieron en la atención de las personas con vih, en cuanto a que favoreció o impuso barreras a las prácticas. Se encontraron fallos en el proceso informativo/educativo desde el momento del diagnóstico, estigma y discriminación, profundizado en las instituciones de salud no especializadas en vih, así como múltiples barreras de acceso a los servicios de salud. El 55,5% de los pacientes expresó haber sido discriminados por el personal de salud en algún momento desde su diagnóstico. El 100% de pacientes entrevistados identificó barre-ras de diferente tipo para los servicios de salud, contextualizados en trato indebido, inoportunidad en la atención y abuso del poder; solo el 22,2% recurrió a la interposición de quejas, derechos de petición o tutelas para reclamar su derecho a la salud.conclusiones: la praxis de atención se realiza al margen de la situación de contexto de los pacientes, olvidando que son precisamente los ubicados en un nivel socioeconómico más bajo, quienes tienen mayor vulnerabilidad estructural relacionada con la pobreza, por lo que la falta de atención de salud exacerba las inequidades sanitarias.(AU)

Background: health policies and programs for people living with hiv have been subordinated to current economic policies based on the neoliberal development model that shapes the current healthcare system. The study’s objective was to analyze the influence of the colombian health system on the care of people who lived with hiv enrolled in the subsidized regime through benefit plan administrating entities and treated in neiva (colombia).methods: a qualitative study framed within the framework of the critical discourse analysis was conducted. Nineteen people parti-cipated, including hiv patients, non-formal caregivers, and health workers. The participants were recruited from two health service provi-ders institutions in the city of neiva. In-depth interviews were conducted. Data were coded, categorized and organized in excel for analysis.results: the interpersonal relationship and the health system functioning were two phenomena that interfered with caring for people with hiv by favoring or imposing barriers to practices. Failures were found in the informative-educational process from the moment of diagnosis, stigmatization, and discrimination, particularly in non-hiv-specialized health institutions, and multiple barriers to access to health services. 55.5% of the patients expressed having been discriminated against by health personnel at some point since their diagnosis. 100% of the patients interviewed identified different types of barriers to health services, contextualized in im-proper treatment, untimely care and abuse of power; only 22.2% resorted to the filing of complaints, petition rights or guardianships to claim their right to health.conclusions: health care praxis is carried out regardless of patients’ situation, forgetting that those from a lower socioecono-mic level have greater structural vulnerability related to poverty. The lack of healthcare exacerbates health inequalities.(AU)

Self-Diffusion versus Intentional Doping: Beneficial and Damaging Impact on Hematite Photoanode Interfaces.

The comprehension of side effects caused by high-temperature thermal treatments in the design of (photo)electrodes is essential to achieve efficient and cost-effective devices for solar water splitting. This investigation explores the beneficial and damaging impacts of thermal treatments in the (photo)electrode design, unraveling the impact of self-diffusion and its consequences. The industrial-friendly polymeric precursor synthesis (PPS) method, which is known for its easy technological application, was chosen as the fabrication technique for hematite photoabsorbers. For substrate evaluation, two types of conductive glass substrates, aluminum borosilicate and quartz, both coated with fluorine-doped tin oxide (ABS/FTO and QTZ/FTO, respectively), were subjected to thermal treatments following the PPS protocol. Optical and structural analyses showed no significant alterations in substrate properties, whereas X-ray photoelectron spectroscopy (XPS) revealed the migration of silicon and calcium ions from the glass component to the FTO surface. This diffusion can be further mitigated by an oxide buffer layer. To track the potential ion diffusion on the photoabsorber surface and assess its effect on the photoelectrode performance, hematite was selected as the model material and deposited onto the glass substrates. From all the ions that could possibly migrate, only Si4+ and Ca2+ originating from the glass component, as well as Sn4+ from the fluorine-doped tin oxide (FTO), were detected on the surface of the hematite photoabsorber. Interestingly, the so-called "self-diffusion" of these ions did not result in any beneficial effect on the hematite photoelectrochemical response. Instead, intentional modifications showed more substantial impacts on the photoelectrochemical efficiency compared to unintentional self-diffusion. Therefore, "self-diffusion", which can unintentionally dope the hematite, is not sufficient to significantly impact the final photocurrent. These findings emphasize the importance of understanding the true effect of thermal treatments on the photoelectrode properties to unlock their full potential in photoelectrochemical applications.

Experiencias de cuidado hacia la persona con VIH/SIDA durante la formación en Enfermería / Experiences of caring for the person with HIV/AIDS during nursing education / Experiências de cuidados a pessoas com VIH/SIDA durante a educação de enfermagem

Objetivo: Comprender la vivencia del cuidado brindado a la persona que vive con VIH/SIDA durante la formación de pregrado en enfermería. Materiales y método: Estudio cualitativo, fenomenológico hermenéutico, en el que participaron 10 estudiantes del Programa de En-fermería. La información fue recolectada mediante entrevista semiestructurada, y el análisis siguió los planteamientos de Van Manen. Resultados: Emergieron 35 unidades de significado organizados en los siguientes 6 temas fenomenológicos: Construcciones sociales sobre el VIH/SIDA; Conocimientos sobre el VIH/SIDA; Espacios académicos para el aprendizaje teórico del VIH/SIDA; Vivencias relacionadas con el cuidado de la persona con VIH/SIDA durante las prácticas formativas; Sentimientos y emociones relacionados con el cuidado y at-ención al paciente con VIH/SIDA y Propuestas para el fomento de la sensibilización social y académica del cuidado en VIH/SIDA. Conclusiones: La vivencia del cuidado en VIH/SIDA, significa para los estudiantes un ejercicio de confrontación individual y colectiva frente a la deslegitimación de principios y convicciones transgeneracionales de la enfermedad, esboza además la necesidad imperante de consolidar escenarios educativos teórico-prácticos intra y extracurriculares para el abordaje del VIH, que contribuyan favorablemente en el ejercicio profesional de cuidado

Objective: To understand the experience of care provided to the person living with HIV/AIDS during undergraduate nursing education. Method: Qualitative, hermeneutic phenom-enological study, in which 10 students of the Nursing Program participated. The information was collected through semi-structured interviews, and the analysis followed Van Manen's approaches. Results: 35 units of meaning emerged, organized into the following 6 phenom-enological themes: social constructions about HIV/AIDS; Knowledge about HIV/AIDS; Ac-ademic spaces for theoretical learning about HIV/AIDS; Experiences related to the care of the person with HIV/AIDS during formative practices; Feelings and emotions related to the care and attention to the patient with HIV/AIDS and Proposals for the promotion of social and academic awareness of HIV/AIDS care. Conclusions: The experience of HIV/AIDS care, means for students an exercise of individual and collective confrontation against the del-egitimization of principles and transgenerational convictions of the disease, it also outlines the imperative need to consolidate intra and extracurricular theoretical-practical educational sce-narios for the approach to HIV, which contribute favorably in the professional exercise of care.

Objectivo: Compreender a experiência dos cuidados prestados às pessoas que vivem com VIH/SIDA durante a formação de enfermagem universitária. Materiais e métodos: Estudo qualitativo e hermenêutico fenomenológico, no qual participaram 10 estudantes do Programa de Enfermagem. A informação foi recolhida através de entrevistas semi-estruturadas, e a análise seguiu a abordagem de Van Manen. Resultados: emergiram 35 unidades de signifi-cado, organizadas nos seguintes 6 temas fenomenológicos: construções sociais sobre VIH/SIDA; Conhecimento sobre VIH/SIDA; Espaços académicos para aprendizagem teórica so-bre VIH/SIDA; Experiências relacionadas com os cuidados da pessoa com VIH/SIDA du-rante as práticas formativas; Sentimentos e emoções relacionadas com os cuidados e atenção ao doente com VIH/SIDA e Propostas para a promoção da consciência social e académica dos cuidados com VIH/SIDA. Conclusões: Para os estudantes, a experiência dos cuidados de VIH/SIDA é um exercício de confrontação individual e colectiva face à deslegitimação de princípios e convicções transgeracionais da doença. Também delineia a necessidade im-perativa de consolidar cenários teórico-práticos intra e extracurriculares para a abordagem do VIH, que contribuem favoravelmente para o exercício profissional dos cuidadoS

Prevalencia de síndrome metabólico en trabajadores universitarios y factores asociados / Prevalence of metabolic syndrome in university staff and factors associated

Objetivo: identificar la prevalencia del síndrome metabólico (SMet) y su asociación con el estilo de vida y el rol laboral de trabajadores de una universidad pública colombiana. Metodología: estudio descriptivo transversal con trabajadores con contrato fijo administrativos, de servicios generales y docentes, de la Universidad Surcolombiana; se excluyeron personas con determinadas enfermedades previas, resultando N= 220. Se realizó un muestreo estratificado proporcional según el cargo laboral, resultando N= 63 personas. Se recogieron variables sociodemográficas, de estilo de vida con el cuestionario STEPS 3.0 e IPAQ, antropométricas y bioquímicas por análisis de muestra sanguínea. El SMet se determinó según los criterios de la Federación Internacional de Diabetes. Resultados: participaron 63 trabajadores (100%). La edad promedio fue de 53 años y el 52,4% era hombre. Los criterios diagnósticos más alterados en mujeres fueron la circunferencia abdominal (p= 0,049) y los niveles de HDL (p< 0,01), y en los hombres el valor de triglicéridos (p> 0,01). La prevalencia de SMet fue de 42,8%, siendo más frecuente en las mujeres (51,9%). Se encontró asociación con bajo consumo de frutas y verduras (p= 0,006), baja actividad física (p= 0,001), tensión arterial elevada (p< 0,001), hipertrigliceridemia (p= 0,012) e hiperglicemia (p= 0,04). Aunque el índice de masa corporal no presentó asociación significativa (p= 0,057), se observó un aumento de prevalencia de SMet conforme aumentaba. Conclusiones: la prevalencia del SMet en trabajadores universitarios fue superior a la documentada a nivel nacional e internacional y está relacionada con hábitos de vida no saludables como el sedentarismo y la dieta malsana. Se requieren intervenciones prioritarias en promoción de la salud y prevención de la enfermedad.(AU)

Objective: to identify the prevalence of metabolic syndrome (MetS) and its association with the lifestyles and occupational roles of the staff working at a Colombian public university.Methodology: a descriptive cross-sectional study with workers under permanent contract in the administration, general services and teaching areas from the Universidad Surcolombiana; persons with specific previous conditions were excluded, and the result was N= 220. Proportional stratified sampling was applied according to job titles, and the result was N= 63 persons. Sociodemographic variables were collected, as well as lifestyle variables with the STEPS 3.0 and IPAQ questionnaire, anthropometric, and biochemical variables through blood sample test. The MetS was determined according to the criteria by the International Federation of Diabetes. Results: the study included 63 workers (100%). Their average age was 53 years, and 52.4% were male. The diagnostic criteria more altered in women were the abdominal girth (p= 0.049) and HDL levels (p< 0.01); and in males, the triglyceride value (p> 0.01). There was a 42.8% prevalence of MetS, and it was more frequent among women (51.9%). An association was found with a low intake of fruits and vegetables (p= 0.006), low physical activity (p= 0.001), high blood pressure (p< 0.001), hypertriglyceridemia (p= 0.012) and hyperglycaemia (p= 0.04). Even though the body mass index did not present a significant association (p= 0.057), an increase in the prevalence of MetS was observed associated with its increase. Conclusions: the prevalence of MetS among university workers was higher than the one documented at national and international level, and it was associated with unhealthy life habits such as sedentarism and unwholesome diet. Priority interventions are required in terms of health promotion and disease prevention.(AU)

Advances in Engineered Metal Oxide Thin Films by Low-Cost, Solution-Based Techniques for Green Hydrogen Production.

Functional oxide materials have become crucial in the continuous development of various fields, including those for energy applications. In this aspect, the synthesis of nanomaterials for low-cost green hydrogen production represents a huge challenge that needs to be overcome to move toward the next generation of efficient systems and devices. This perspective presents a critical assessment of hydrothermal and polymeric precursor methods as potential approaches to designing photoelectrodes for future industrial implementation. The main conditions that can affect the photoanode's physical and chemical characteristics, such as morphology, particle size, defects chemistry, dimensionality, and crystal orientation, and how they influence the photoelectrochemical performance are highlighted in this report. Strategies to tune and engineer photoelectrode and an outlook for developing efficient solar-to-hydrogen conversion using an inexpensive and stable material will also be addressed.

Características de salud y adherencia farmacoterapéutica en el adulto mayor del municipio de Acacías (Colombia) / Health characteristics and pharmacotherapeutic adherence in the elderly in the municipality of Acacías (Colombia) / Características de saúde e adesão farmacoterapêutica em idosos do município de Acacías (Colômbia)

RESUMEN Introducción: El envejecimiento es una preocupación que ocupa las políticas públicas en todos los países del mundo. Objetivo: Analizar la adherencia, el uso de medicamentos y el estado de salud en los adultos mayores del municipio de Acacías (Colombia). Metodología: Estudio descriptivo, muestreo no probabilístico discrecional, n= 96 adultos mayores. Resultados: 64,6% de los adultos mayores consumen medicamentos; el 62,9% no son adherentes al tratamiento farmacológico, existe una correlación significativa a través del MEC (miniexamen cognoscitivo), el 46,2% de ellos padecen algún tipo de deterioro cognitivo. Conclusiones: Existe una correlación entre la no adherencia con el estado cognitivo y el apoyo familiar.

SUMMARY Introduction: Aging is a concern that occupies public policies in all countries of the world. Objective: To analyze the adherence, use of medications and health status in the elderly of the municipality of Acacías (Colombia). Methodology: Descriptive study, non-probabilistic discretionary sampling, n= 96 older adults. Results: 64.6% of older adults consume medications; 62.9% are not adherent to pharmacological treatment, there is a significant correlation through the MCC (Mini Cognitive Examination), 46.2% of them suffer some type of cognitive deterioration. Conclusions: There is a correlation between non-adherence with cognitive status and family support.

RESUMO Introdução: O envelhecimento é uma preocupação que ocupa políticas públicas em todos os países do mundo. Objetivo: Analisar a adesão, o uso de medicamentos e o estado de saúde dos idosos do município de Acacías (Colômbia). Metodologia: Estudo descritivo, amostragem não probabilística discricionária, n= 96 idosos. Resultados: 64,6% dos idosos consomem medicamentos; 62,9% não aderem ao tratamento farmacológico, existe uma correlação significativa através do MEC (mini exame cognitivo), 46,2% deles sofrem de algum tipo de deterioração cognitiva. Conclusões: Há correlação entre a não adesão com o estado cognitivo e o suporte familiar.

Challenges and prospects about the graphene role in the design of photoelectrodes for sunlight-driven water splitting.

Graphene and its derivatives have emerged as potential materials for several technological applications including sunlight-driven water splitting reactions. This review critically addresses the latest achievements concerning the use of graphene as a player in the design of hybrid-photoelectrodes for photoelectrochemical cells. Insights about the charge carrier dynamics of graphene-based photocatalysts which include metal oxides and non-metal oxide semiconductors are also discussed. The concepts underpinning the continued progress in the field of graphene/photoelectrodes, including different graphene structures, architecture as well as the possible mechanisms for hydrogen and oxygen reactions are also presented. Despite several reports having demonstrated the potential of graphene-based photocatalysts, the achieved performance remains far from the targeted benchmark efficiency for commercial application. This review also highlights the challenges and opportunities related to graphene application in photoelectrochemical cells for future directions in the field.

Percepciones sobre Interrupción Voluntaria del Embarazo en estudiantes de pregrado en Enfermería / Perceptions about Voluntary Interruption of Pregnancy in undergraduate Nursing students / Percepções sobre interrupção voluntaria da gravidez em alunos de graduação em enfermagem

Objetivo: Explorar la construcción de percepciones sobre la Inte-rrupción Voluntaria del Embarazo en estudiantes de pregrado en En-fermería de la Universidad Surcolombiana. Materiales y métodos:Estudio cualitativo, bajo el método de la teoría fundamentada. Se aplicó entrevista semiestructurada a un grupo focal de 10 estudian-tes, se transcribió en procesador de palabras y se codificó con ayuda de Atlas Ti versión 6. Resultados: La actual percepción del estu-diante sobre la Interrupción Voluntaria del Embarazo está permeada no solamente por los conceptos adquiridos sobre el tema durante la formación universitaria, sino también por aquellos adquiridos previamente al pregrado. Sin embargo, la divergencia de opiniones poco fundamentadas derivadas del contexto social, familiar, religio-so y académico influyeron en que el enfermero en formación sienta conflicto interno para sentar postura personal frente al tema, siendo susceptible muchas veces a la influencia de ideas y posturas sobre la Interrupción Voluntaria del Embarazo impartidas vehementemente por algunos docentes. Conclusión: La construcción de percepciones en los estudiantes constituye el resultado de la conjugación del con-texto en el que viven y se desarrollan previo al ingreso universitario y del contexto académico ligado a la formación de pregrado, en don-de los estrechos conocimientos recibidos con diversidad de posturas y de enfoques generan fricción de ideas e influyen negativamente en el desempeño del futuro profesional, caracterizado por inseguridad, incertidumbre y preocupación, profundizando las barreras para que la mujer acceda al libre derecho de la Interrupción Voluntaria del Embarazo.

Objective: To explore the construction of perceptions about Voluntary Interruption of Pregnan-cy in undergraduate nursing students at Universidad Surcolombiana. Materials and methods:Qualitative study, under the grounded theory method. A semi-structured interview was applied to a focus group of 10 students, transcribed in a word processor and coded with the help of ATLAS ti version 6. Results: The current perception of the student about Voluntary Interruption of Pregnan-cy is permeated not only by the concepts acquired on the subject during university education but also, by those acquired prior to undergraduate studies. However, the divergence of unsubstantiat-ed opinions derived from the social, family, religious, and academic context, influenced the nurse in training to feel internal conflict to establish a personal position on the subject, making it often susceptible to the influence of ideas and positions on the Voluntary Interruption of Pregnancy ve-hemently taught by some teachers. Conclusion: The construction of perceptions in students is the result of the conjugation of the context in which they live and develop before entering university, and of the academic context linked to university training; where the narrow knowledge received with a diversity of positions and approaches, generates friction of ideas and negatively influences the performance of the future professional characterized by insecurity, uncertainty and concern, deepening the barriers for women to access free Voluntary Interruption of Pregnancy rights.

Objetivo: Explorar a construção de percepções sobre a interrupção voluntaria da gravidez em estudantes de graduação em enfermagem da Universidade Surcolombiana. Materiais e métodos: estudo qualitativo com metodologia da teoria fundamentada. Aplicou-se entrevista semiestrutu-rada num grupo focal de 10 estudantes, transcreveu-se em processador de palavras e codificou-se usando Atlas Ti versão 6. Resultados: A atual percepção do aluno sobre a interrupção voluntaria da gravidez está influenciada não só por conceitos adquiridos sobre o tema na sua graduação, também da diversidade de opiniões pouco fundamentadas derivadas do seu contexto social, fami-liar, religioso e acadêmico do enfermeiro em formação, gerando uma opinião conflitante perante a situação, sendo suscetível muitas vezes da influencia de ideias e posturas alheias sobre a inte-rrupção voluntaria da gravidez. Conclusão: A construção de percepções nos estudantes constitui o resultado da conjugação do contexto em que vivem e se desenvolvem prévio ao ingresso à faculdade e do contexto acadêmico ligado à graduação, onde os conhecimentos adquiridos com diversas posturas e enfoques geram atrito, influindo negativamente no desenvolvimento do futuro profissional, caracterizado pela insegurança, incerteza e preocupação, piorando os empecilhos para que a mulher tenha acesso livre ao seu direito da interrupção voluntaria da gravidez.

High-Performance Photoelectrochemical Water Oxidation with Phosphorus-Doped and Metal Phosphide Cocatalyst-Modified g-C3 N4 Formation Through Gas Treatment.

Graphitic carbon nitride (g-C3 N4 ) has been widely explored as a photocatalyst for water splitting. The anodic water oxidation reaction (WOR) remains a major obstacle for such processes, with issues such as low surface area of g-C3 N4 , poor light absorption, and low charge-transfer efficiency. In this work, such longtime concerns have been partially addressed with band gap and surface engineering of nanostructured graphitic carbon nitride (g-C3 N4 ). Specifically, surface area and charge-transfer efficiency are significantly enhanced through architecting g-C3 N4 on nanorod TiO2 to avoid aggregation of layered g-C3 N4 . Moreover, a simple phosphide gas treatment of TiO2 /g-C3 N4 configuration not only narrows the band gap of g-C3 N4 by 0.57 eV shifting it into visible range but also generates in situ a metal phosphide (M=Fe, Cu) water oxidation cocatalyst. This TiO2 /g-C3 N4 /FeP configuration significantly improves charge separation and transfer capability. As a result, our non-noble-metal photoelectrochemical system yields outstanding visible light (>420 nm) photocurrent: approximately 0.3 mA cm-2 at 1.23 V and 1.1 mA cm-2 at 2.0 V versus RHE, which is the highest for a g-C3 N4 -based photoanode. It is expected that the TiO2 /g-C3 N4 /FeP configuration synthesized by a simple phosphide gas treatment will provide new insight for producing robust g-C3 N4 for water oxidation.

Micropropagação de umburana de cheiro / Micropropagation of umburana de cheiro

Umburana-de-cheiro é uma espécie nativa da Caatinga, amplamente utilizada pela população local, devido o valor madeireiro, ornamental, forrageiro e, principalmente medicinal. Considerando o significativo risco de extinção e a inexistência de estudos relacionados ao cultivo e propagação, objetivou-se com este trabalho estabelecer um protocolo para micropropagação de Amburana cearensis. Para isso, avaliou-se a influência do regulador vegetal 6-benzilaminopurina (BAP) em cinco concentrações (0,0; 2,22; 4,44; 8,88 e 17,76µM) sobre a multiplicação in vitro de diferentes explantes (segmento nodal, ápice caulinar e segmento cotiledonar) e na etapa de enraizamento testou-se diferentes concentrações de ácido indol butírico (AIB) (0,0; 2,5; 5,0 e 10,0µM) na presença e ausência de 1,0g L-1 de carvão ativado. Maior número de brotos (2,36) foi obtido na presença de 4,44µM de BAP, a partir do segmento cotiledonar e maior porcentagem de enraizamento (92,0%) ocorreu na presença de 10,0µM de AIB na ausência de carvão ativado. Não existiram dificuldades para o estabelecimento do protocolo de micropropagação de A. cearensis.

Umburana de cheiro is a species native to the Caatinga, widely used by local people, because the value of timber, ornamental, forage and especially medicinal. Considering the significant risk of extinction and the ausence of studies related to the cultive and propagation, the aim of this work was to establish a protocol for micropropagation Amburana cearensis. For this, we evaluated the influence of plant growth regulator BAP at five different concentrations (0.0, 2.22, 4.44, 8.88 and 17.76mM) on the in vitro multiplication of different explants (nodal segments, apex cotyledon and stem segment) and the rooting stage we tested different concentrations of IBA (0.0, 2.5, 5.0 and 10.0mM) in the presence and absence of 1.0g L-1 of activated charcoal. Highest number of shoots (2.36) was obtained in 4.44mM of BAP from cotyledonary segment and higher rooting percentage (92.0%) ocurred in 10.0mM of IBA in the absence of activated charcoal. There were no difficulties to the establishment of micropropagation protocol A. cearensis.

Regeneração in vitro via organogênese direta de Bauhinia cheilantha / In vitro regeneration of the Bauhinia cheilantha via organogenesis

Bauhinia cheilantha, conhecida como "pata-de-vaca", possui grande relevância econômica e etnofarmacológica no semiárido brasileiro. Nas suas sementes constatou-se dormência, o que dificulta a obtenção de plantas uniformes e em curto período de tempo, diante disso, o presente trabalho objetivou estabelecer um protocolo de micropropagação para a espécie. Os segmentos cotiledonar e nodal de plântulas emergidas in vitro foram inoculados em meio de cultura WPM, suplementado com diferentes concentrações de 6-benzilaminopurina (BAP), thidiazuron (TDZ) ou cinetina (KIN) para induzir a regeneração de brotos adventícios. Na fase de enraizamento foram testadas diferentes concentrações de ácido indol-3-butírico (AIB) e de carvão ativado. Nos segmentos nodais houve maior capacidade organogênica do que no segmento cotiledonar. O maior número de brotos (4,3 e 2,1) foi obtido com 1,0mg L-1 de TDZ e 1,5mg L-1 de BAP, respectivamente. No entanto, na presença de TDZ foram observadas as menores brotações. A presença de 2,0mg L-1 de AIB com carvão ativado (CA) promoveu a maior porcentagem de enraizamento (cerca de 60,0 por cento) e maior número de raízes adventícias (2,5). As brotações enraizadas foram transferidas para casa de vegetação e aclimatizadas com sucesso.

Bauhinia cheilantha, known as "pata-de-vaca", is of great economic and ethnopharmacological importance in the semiarid Brazilian. Seeds are dormant which makes it difficult to obtain uniform plants in a short time before this, our study aimed to establish a micropropagation protocol for the species. Cotyledonary and nodal segments of seedlings grown in vitro were inoculated on Woody Plant Medium (WPM) supplemented with various concentrations of 6-benzylaminopurine (BAP), thidiazuron (TDZ) or kinetin (KN) to induce adventitious shoot regeneration. In the rooting phase, different concentrations of indole-3-butyric acid (IBA) and the activated charcoal were tested. The nodal segments showed organogenic capacity greater than the cotyledonary segment. The highest number of shoots (4.3 and 2.1) was obtained at 1.0mg L-1 TDZ and 1.5mg L-1 BAP, respectively. However, in the presence of TDZ was observed the smaller shoots.The use of 2.0mg L-1 IBA within activated charcoal (AC) promoted the highest percentage of rooting (about 60.0 percent) and number of adventitious roots (2.5). The rooted shoots were transferred to greenhouse and successfully acclimatized.

Infarto del miocardio y embarazo / Myocardial infarction and pregnancy

Se presenta caso clínico de una paciente de 42 años que sufrió infarto del miocardio secundario a un espasmo coronario, mientras cursaba una gestación de 30 1/2 semanas. Se analizan las bases del diagnóstico, su evolución y las complicaciones