Characteristics of watermelon fruits under different fertilization management in semi-arid climate conditions / Características de frutos de melancia sob diferentes manejos de adubação em condições de clima semiárido

This study was conducted to evaluate the production and quality of watermelon fruits, submitted to different doses of potassium chloride (KCl) in fertigation and conventional fertilization systems. Talisman F1 was used as a plant material. It was carried out in a randomized complete block design, in a 2x4 split-plot scheme, with four replications. In the plots, the conventional and fertigation systems were tested and in the subplots the doses of KCl, equals: 0, 60, 120 and 180 kg ha-1 of K2O were tested. Seventy days after planting, were determined: total number of fruits; average weight of total fruits; total fruit production; average number of commercial fruits; average weight of commercial fruits and commercial fruit production, as well the hydrogenic potential (pH), total soluble solids (TSS), total titratable acidity (TTA) and TSS/TTA ratio. There was interaction between fertilization systems and K2O rates for commercial productivity with a linear increase under fertigation, which, in turn, increased TTA. 180 kg ha-1 of K2O in a conventional fertilization system, confirm possible metabolic changes not conducive to the cultivation and production of 'Talisman F1' watermelon. The fertilization system by fertigation represents an alternative for the cultivation of watermelon, considering the productivity and quality of fruits.

Multifunctional Hybrid MoS2-PEGylated/Au Nanostructures with Potential Theranostic Applications in Biomedicine

In this work, flower-like molybdenum disulfide (MoS2) microspheres were produced with polyethylene glycol (PEG) to form MoS2-PEG. Likewise, gold nanoparticles (AuNPs) were added to form MoS2-PEG/Au to investigate its potential application as a theranostic nanomaterial. These nanomaterials were fully characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), photoelectron X-ray spectroscopy (XPS), Fourier-transformed infrared spectroscopy (FTIR), cyclic voltammetry and impedance spectroscopy. The produced hierarchical MoS2-PEG/Au microstructures showed an average diameter of 400 nm containing distributed gold nanoparticles, with great cellular viability on tumoral and non-tumoral cells. This aspect makes them with multifunctional characteristics with potential application for cancer diagnosis and therapy. Through the complete morphological and physicochemical characterization, it was possible to observe that both MoS2-PEG and MoS2-PEG/Au showed good chemical stability and demonstrated noninterference in the pattern of the cell nucleus, as well. Thus, our results suggest the possible application of these hybrid nanomaterials can be immensely explored for theranostic proposals in biomedicine

The knowledge of nursing undergraduate students about pressure lesions

Objective: assessing the knowledge of nursing undergraduate students regarding pressure lesions. Methods: cross-sectional research with 56 nursing undergraduates from two higher education institutions, using a test of their knowledge regarding pressure lesions. Data was analyzed using descriptive statistics and the Mann-Whitney U test, with a significance level of 0.05. Results: most undergraduates were female (87.5%), single (80.3%), with no employment bonds (75.0%), and between 20 and 25 years of age (67.8%). One of the nursing undergraduates assessed had adequate knowledge about pressure lesions. From the items related to the assessment and classifications, 33.3% were considered as well-known; from those related to prevention, this number was 36.3%. Conclusion: it became clear that the knowledge of the researchers analyzed was found to be inadequate.Objetivo: analisar o conhecimento de acadêmicos de enfermagem sobre lesão por pressão. Métodos: pesquisa transversal, realizada com 56 acadêmicos de enfermagem de duas instituições de ensino superior, utilizando-se do teste de conhecimento sobre lesão por pressão. Dados analisados por estatística descritiva e teste de Mann-Whitney, ao nível de significância de 0,05. Resultados: a maioria dos acadêmicos era do sexo feminino (87,5%), solteira (80,3%), sem vínculo empregatício (75,0%) e idades entre 20 e 25 anos (67,8%). Um acadêmico de enfermagem apresentou conhecimento considerado adequado sobre lesão por pressão. Dos itens relacionados à avaliação e classificação, 33,3% foram considerados conhecidos; e dos referentes à prevenção, 36,3%. Conclusão: evidenciou-se que o conhecimento dos acadêmicos pesquisados foi considerado inadequado

Ausência da Lutzomyia longipalpis em algumas áreas de ocorrência de leishmaniose visceral no Município do Rio de Janeiro

Em 1977 foi diagnosticado o primeiro caso autóctone de leishmaniose visceral (LV) humano no Município do Rio de Janeiro. A partir de 1980, foram diagnosticados 54 casos autóctones em diversas localidades, sendo que desde 1993 ocorreram 17 casos humanos autóctones notificados. Oito deles ocorreram no bairro de Barra de Guaratiba e o restante distribuído pelos bairros: Camorim, Colônia, Grota Funda, Grumari, Ilha de Guaratiba e Carapiá. Entre setembro de 1996 a dezembro de 1999, foram realizadas capturas de flebotomíneos em 18 localidades nas encostas do maciço da Pedra Branca, no município, e coletados 18.303 espécimes com predomínio de L. intermedia (87,33%), L. migonei (6,59%), L. longipalpis (3,10%) e L. firmatoi (1,90%). A espécie L. longipalpis predominou em Barra de Guaratiba (46,80%), permanecendo ausente nas outras seis localidades onde também ocorreram casos de LV, o que sugere a participação de outras espécies tais como L. migonei e L. firmatoi, pertencentes ao mesmo grupo parafilético da espécie vetora, na cadeia de transmissão da LV na região

Resumos em andamento - História

Resumos em andamento - Históri

Resumos em andamento - História

Resumos em andamento - Históri