Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon.

The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatography coupled to a diode array detector (HPLC-DAD). The AC-NP was efficiently synthesized using a co-precipitation method and the impregnation of magnetite (NP) in the activated carbon (AC) was assessed by the crystalline planes found in the AC-NP structure shown in the XRD diffractograms. The AC-NP FTIR analysis also indicated predominant bands of Fe-O stretching of the magnetite at 610-570 cm-1. Functional groups in AC and AC-NP were identified by absorption bands at 3550 and 1603 cm-1, characteristic of O-H and C = C, respectively. The TMX adsorption kinetics in sugarcane juice was the pseudo-second-order type with r2 = 0.9999, indicating a chemical adsorption process. The experimental sorption capacity (SCexp) for both TMX (standard) and TMX-I (insecticide) by AC-NP were 13.44 and 42.44 mg/g, respectively. Seven non-linear isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Toth, Hill, Sips, and Redlich-Peterson) were fitted to the experimental adsorption data of TMX and TMX-I by AC-NP. Considering the standard error (SE), Freundlich, Langmuir, and Sips were the most appropriate models to describe the TMX adsorption, and Hill's best adjusted to TMX-I experimental data. The chromatographic method was highly satisfactory due to its high selectivity and recovery (91-103%). The efficiency of AC-NP in the sorption of TMX was confirmed by the excellent values of SCexp and sorption kinetics.

The mental health of nursing students: an integrative review of literature / A saúde mental do aluno de Enfermagem: revisão integrativa da literatura / La salud mental del alumno de enfermería: revisión integrativa de la literatura

Study of integrative review type in order to examine the occurrence of scientific research on the mental health of undergraduate students in Nursing in Brazil in the last 21 years. 54 articles were included that from the content analysis were categorized into five thematic categories related to: quality of life, feelings during their academic formation, teacher-student relationship, student care and the consumption of alcohol and other drugs by the nursing student. The results portray the convergence of Brazilian publications that point critical moments experienced by students during the course, indicating the importance of initiatives to support them in their difficulties coping with a view to strengthening their mental health.(AU)

Estudo do tipo revisão integrativa com o objetivo de analisar a ocorrência da investigação científica sobre a saúde mental do aluno do curso de graduação em Enfermagem, no Brasil, nos últimos 21 anos. Foram incluídos 54 artigos que, a partir da análise de conteúdo, foram categorizados em cinco categorias temáticas relacionadas à qualidade de vida, aos sentimentos durante a formação acadêmica, relação professor/aluno, cuidados com o aluno, além do consumo de álcool e outras drogas pelo aluno de Enfermagem. Os resultados retratam a convergência das publicações brasileiras que apontam os momentos críticos vivenciados pelos alunos durante o curso, sinalizando a importância de iniciativas que venham a apoiá-lo no enfrentamento de suas dificuldades com vistas ao fortalecimento da sua saúde mental.(AU)

Estudio del tipo revisión integrativa con objetivo de que analizar la ocurrencia de la averiguación científica sobre la salud mental del alumno del curso de graduación en Enfermería, en Brasil, en los últimos 21 años. Fueron incluidos 54 artículos que el análisis de contenido fueron categorizados en cinco categorías temáticas relacionadas a la calidad de vida, a los sentimientos durante la formación académica, relación maestro-alumno, atenciones con el alumno, además del consumo de alcohol y otras drogas por el alumno de enfermería. Los resultados retractan la convergencia de las publicaciones brasileñas que apuntan los momentos críticos vividos por los alumnos durante el curso, señalizando la importancia de iniciativas que vengan a apoyarlo en el enfrentamiento de sus dificultades con vistas al fortalecimiento de su salud mental.(AU)

The mental health of nursing students: an integrative review of literature / A saúde mental do aluno de Enfermagem: revisão integrativa da literatura / La salud mental del alumno de enfermería: revisión integrativa de la literatura

Study of integrative review type in order to examine the occurrence of scientific research on the mental health of undergraduate students in Nursing in Brazil in the last 21 years. 54 articles were included that from the content analysis were categorized into five thematic categories related to: quality of life, feelings during their academic formation, teacher-student relationship, student care and the consumption of alcohol and other drugs by the nursing student. The results portray the convergence of Brazilian publications that point critical moments experienced by students during the course, indicating the importance of initiatives to support them in their difficulties coping with a view to strengthening their mental health...

Estudo do tipo revisão integrativa com o objetivo de analisar a ocorrência da investigação científica sobre a saúde mental do aluno do curso de graduação em Enfermagem, no Brasil, nos últimos 21 anos. Foram incluídos 54 artigos que, a partir da análise de conteúdo, foram categorizados em cinco categorias temáticas relacionadas à qualidade de vida, aos sentimentos durante a formação acadêmica, relação professor/aluno, cuidados com o aluno, além do consumo de álcool e outras drogas pelo aluno de Enfermagem. Os resultados retratam a convergência das publicações brasileiras que apontam os momentos críticos vivenciados pelos alunos durante o curso, sinalizando a importância de iniciativas que venham a apoiá-lo no enfrentamento de suas dificuldades com vistas ao fortalecimento da sua saúde mental...

Estudio del tipo revisión integrativa con objetivo de que analizar la ocurrencia de la averiguación científica sobre la salud mental del alumno del curso de graduación en Enfermería, en Brasil, en los últimos 21 años. Fueron incluidos 54 artículos que el análisis de contenido fueron categorizados en cinco categorías temáticas relacionadas a la calidad de vida, a los sentimientos durante la formación académica, relación maestro-alumno, atenciones con el alumno, además del consumo de alcohol y otras drogas por el alumno de enfermería. Los resultados retractan la convergencia de las publicaciones brasileñas que apuntan los momentos críticos vividos por los alumnos durante el curso, señalizando la importancia de iniciativas que vengan a apoyarlo en el enfrentamiento de sus dificultades con vistas al fortalecimiento de su salud mental...