86 research outputs found

    Utilização de hidróxidos duplos lamelares para a remoção do contaminante emergente diclofenaco / Use of layered double hydroxides for the removal of the emerging pollutant diclofenac

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    Métodos alternativos para a remoção de micropoluentes, por meio do processo de adsorção vêm sendo intensamente estudados nos últimos anos. No contexto de contaminantes em corpos hídricos, nota-se o aumento do monitoramento de fármacos residuais, devido ao fato de muitas dessas substâncias serem frequentemente encontradas em águas superficiais e efluentes de Estações de Tratamento de Esgoto (ETEs) em concentrações na faixa de µg L-1, gerando preocupações relacionadas a questões de saúde pública e equilíbrio ecológico dos ecossistemas.  Os Hidróxidos Duplos Lamelares (HDLs) apresentam facilidade de obtenção associada ao baixo custo relativo a diversos outros materiais, elevada área superficial e estabilidade em diversos meios, sendo promissores na aplicação como adsorventes de poluentes em meio aquoso. Nesse trabalho realizou-se a síntese de dois sistemas, sendo HDL[Co-Al-NO3] e HDL[Co-Al-Cl] pelo método da co-precipitação a pH constante 8,0 ± 0,5, o material obtido foi caracterizado estruturalmente e morfologicamente. Os estudos cinéticos de adsorção avaliando o tempo de contato do Diclofenaco (DCF) com os HDL, demostraram melhor eficiência de remoção com a utilização do HDL[Co-Al-NO3], o qual apresentou 96,16 mg g-1 de remoção em 180 min, temperatura ambiente (24 ± 1 ºC), pH da solução em 7 ± 0,5 e concentração de DCF a 100 mg L-1. Já o HDL[Co-Al-Cl] demonstrou remoção de 30,64 mg g-1 nas mesmas condições experimentais citadas.

    Nutritive value of hay from sorghum-sudangrass hybrids (Sorghum sudanense vs. Sorghum bicolor) / Valor nutritivo do feno de híbridos de sorgo com capim-sudão (Sorghum sudanense vs. Sorghum bicolor)

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    This study aimed to evaluate the nutritive value of hay from ten sorghum-sudangrass hybrids. A randomized block design with ten treatments and three replicates was used. The chemical composition was analyzed 57 days after germination. Hay from hybrids BRS 810 and BRS 802 showed similar dry matter content, although it was lower compared to other genotypes (86.98; 86.47%). Ash content was highest for the hybrid BRS 810 (6.46%). The highest crude protein content was found in hybrids BRS 810, 1013020, and BRS 802 (14.01; 12.84 and 11.96%, respectively). The lowest neutral detergent fiber (NDF) concentrations were observed in hybrids 1134029 and BRS 810, ranging from 57.72 to 58.57%. The acid detergent fiber (ADF) concentration was least in hybrids BRS 810 and 1013029 (30.30 and 30.31%). The highest lignin content was found in hybrids 1013020 and 1134023 (5.82 and 5.41%, respectively). Values of dry matter digestibility were higher than 50%. Hay from all hybrids was of good quality, but hybrids 1013020, BRS 810, BRS 802 were better in terms of nutritive value.This study aimed to evaluate the nutritive value of hay from ten sorghum-sudangrass hybrids. A randomized block design with ten treatments and three replicates was used. The chemical composition was analyzed 57 days after germination. Hay from hybrids BRS 810 and BRS 802 showed similar dry matter content, although it was lower compared to other genotypes (86.98; 86.47%). Ash content was highest for the hybrid BRS 810 (6.46%). The highest crude protein content was found in hybrids BRS 810, 1013020, and BRS 802 (14.01; 12.84 and 11.96%, respectively). The lowest neutral detergent fiber (NDF) concentrations were observed in hybrids 1134029 and BRS 810, ranging from 57.72 to 58.57%. The acid detergent fiber (ADF) concentration was least in hybrids BRS 810 and 1013029 (30.30 and 30.31%). The highest lignin content was found in hybrids 1013020 and 1134023 (5.82 and 5.41%, respectively). Values of dry matter digestibility were higher than 50%. Hay from all hybrids was of good quality, but hybrids 1013020, BRS 810, BRS 802 were better in terms of nutritive value

    Educação ambiental com alunos do 1° ao 3° do ensino fundamental de uma escola municipal rural do município de Uberlândia-MG / Environmental education with students from 1º to 3º of the fundamental education of a rural municipal school of the municipality of Uberlândia-MG

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    O aumento das atividades humanas vem comprometendo a qualidade da água e aumentando assim a preocupação com a escassez desse recurso que já acomete parcelas da população mundial. A escassez e poluição da água podem ocasionar doenças de veiculação hídrica nas pessoas. Assim, a Educação Ambiental é utilizada como instrumento para incorporar valores e atitudes aos conhecimentos sobre processos ambientais e, dessa forma, conscientizar a população sobre a importância de uma relação equilibrada dos indivíduos com o ambiente em que vivem. Esse trabalho mostra o resultado de atividades realizadas com alunos do 1° ao 3° anos do Ensino Fundamental de uma Escola Municipal da zona rural do Município de Uberlândia-MG. Com as atividades foram abordados os seguintes assuntos: usos e importância, uso racional da água; contaminação e doenças de veiculação hídrica. As crianças se mostraram bastante participativas e gostaram de realizar trabalho em grupo, o conhecimento adquirido será compartilhado com seus familiares enquanto conta sobre seu dia na escola, tornando mais abrangente os resultados do trabalho. O mural montado ao final permite a socialização dos conhecimentos, conscientizando assim toda a comunidade escolar sobre a importância da água e sua preservação para o uso das atuais e futuras gerações.

    Educação ambiental com alunos do 1° ao 3° do ensino fundamental de uma escola municipal rural do município de Uberlândia-MG / Environmental education with students from 1º to 3º of the fundamental education of a rural municipal school of the municipality of Uberlândia-MG

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    O aumento das atividades humanas vem comprometendo a qualidade da água e aumentando assim a preocupação com a escassez desse recurso que já acomete parcelas da população mundial. A escassez e poluição da água podem ocasionar doenças de veiculação hídrica nas pessoas. Assim, a Educação Ambiental é utilizada como instrumento para incorporar valores e atitudes aos conhecimentos sobre processos ambientais e, dessa forma, conscientizar a população sobre a importância de uma relação equilibrada dos indivíduos com o ambiente em que vivem. Esse trabalho mostra o resultado de atividades realizadas com alunos do 1° ao 3° anos do Ensino Fundamental de uma Escola Municipal da zona rural do Município de Uberlândia-MG. Com as atividades foram abordados os seguintes assuntos: usos e importância, uso racional da água; contaminação e doenças de veiculação hídrica. As crianças se mostraram bastante participativas e gostaram de realizar trabalho em grupo, o conhecimento adquirido será compartilhado com seus familiares enquanto conta sobre seu dia na escola, tornando mais abrangente os resultados do trabalho. O mural montado ao final permite a socialização dos conhecimentos, conscientizando assim toda a comunidade escolar sobre a importância da água e sua preservação para o uso das atuais e futuras gerações.

    CONTRIBUIÇÃO DA ENFERMAGEM NOS CUIDADOS RELACIONADOS A CATETERISMO VENOSO PERIFÉRICO EM NEONATOS INTERNADOS EM UNIDADES DE TRATAMENTO INTENSIVO

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    This research aims to identify nursing care related to peripheral venipuncture in neonatal patients admitted to intensive care units. This is an integrative literature review, carried out between September and October 25, 2021, through the databases Latin American and Caribbean Literature in Health Sciences (LILACS), Nursing Database (BDENF), Scientific Electronic Library Online (Scielo), Medical Literature Analysis and Retrievel System Online (MEDLINE) and PubMed. Descriptors in Health Sciences (DeCS) were used and crossed with the Boolean operator “AND”: Nursing care AND peripheral catheterization AND Neonates AND Intensive care unit (together and separately). Ten studies were used to build the research discussion. The nursing team is a crucial factor in the care of neonatal patients in Intensive Care Units, adopting practices and planning aimed at safety and quality of hospitalization in relation to the insertion, care and removal of the PICC. In addition, the referent study serves as an influence for the development of new research on this theme.Esta investigación tiene como objetivo identificar los cuidados de enfermería relacionados con la punción venosa periférica en pacientes neonatales ingresados ​​en unidades de cuidados intensivos. Se trata de una revisión integradora de la literatura, realizada entre septiembre y el 25 de octubre de 2021, a través de las bases de datos Literatura Latinoamericana y del Caribe en Ciencias de la Salud (LILACS), Base de Datos de Enfermería (BDENF), Biblioteca Electrónica Científica en Línea (Scielo), Análisis de Literatura Médica y Retrievel System Online (MEDLINE) y PubMed. Se utilizaron Descriptores en Ciencias de la Salud (DeCS) y se cruzaron con el operador booleano “Y”: Cuidados de enfermería Y cateterismo periférico Y Neonatos Y Unidad de cuidados intensivos (juntos y por separado). Se utilizaron diez estudios para construir la discusión de la investigación. El equipo de enfermería es un factor crucial en la atención de los pacientes neonatales en las Unidades de Cuidados Intensivos, adoptando prácticas y planificación orientadas a la seguridad y calidad de la hospitalización en relación a la inserción, cuidado y retiro del PICC. Además, el estudio referente sirve de influencia para el desarrollo de nuevas investigaciones sobre este temaA referida pesquisa objetiva-se pela identificação dos cuidados de enfermagem relacionados a punção venosa periférica em pacientes neonatais internados em unidades de tratamento intensivo. Trata-se de uma revisão da literatura do tipo integrativa, realizada entre os meses de setembro a 25 de outubro de 2021, através das bases de dados Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), Base de Dados de Enfermagem (BDENF), o portal Scientific Electronic Library Online (Scielo), Medical Literature Analysis and Retrievel System Online (MEDLINE) e PubMed. Utilizado os Descritores em Ciências da Saúde (DeCS) e cruzados com o operador booleano “AND”: Cuidados de enfermagem AND cateterismo periférico AND Neonatos AND Unidade de terapia intensiva (juntos e separados). Foram usados 10 estudos para construção da discussão da pesquisa. A equipe de enfermagem é fator crucial no cuidado a pacientes neonatais em Unidades de Terapia Intensiva, adotando práticas e planejamentos que visam segurança e qualidade de internação em relação a inserção, cuidado e remoção do PICC. Além disso, o referente estudo serve de influência para o desenvolvimento de novas pesquisas nessa temática

    ATLANTIC-PRIMATES: a dataset of communities and occurrences of primates in the Atlantic Forests of South America

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    Primates play an important role in ecosystem functioning and offer critical insights into human evolution, biology, behavior, and emerging infectious diseases. There are 26 primate species in the Atlantic Forests of South America, 19 of them endemic. We compiled a dataset of 5,472 georeferenced locations of 26 native and 1 introduced primate species, as hybrids in the genera Callithrix and Alouatta. The dataset includes 700 primate communities, 8,121 single species occurrences and 714 estimates of primate population sizes, covering most natural forest types of the tropical and subtropical Atlantic Forest of Brazil, Paraguay and Argentina and some other biomes. On average, primate communities of the Atlantic Forest harbor 2 ± 1 species (range = 1–6). However, about 40% of primate communities contain only one species. Alouatta guariba (N = 2,188 records) and Sapajus nigritus (N = 1,127) were the species with the most records. Callicebus barbarabrownae (N = 35), Leontopithecus caissara (N = 38), and Sapajus libidinosus (N = 41) were the species with the least records. Recorded primate densities varied from 0.004 individuals/km 2 (Alouatta guariba at Fragmento do Bugre, Paraná, Brazil) to 400 individuals/km 2 (Alouatta caraya in Santiago, Rio Grande do Sul, Brazil). Our dataset reflects disparity between the numerous primate census conducted in the Atlantic Forest, in contrast to the scarcity of estimates of population sizes and densities. With these data, researchers can develop different macroecological and regional level studies, focusing on communities, populations, species co-occurrence and distribution patterns. Moreover, the data can also be used to assess the consequences of fragmentation, defaunation, and disease outbreaks on different ecological processes, such as trophic cascades, species invasion or extinction, and community dynamics. There are no copyright restrictions. Please cite this Data Paper when the data are used in publications. We also request that researchers and teachers inform us of how they are using the data. © 2018 by the The Authors. Ecology © 2018 The Ecological Society of Americ

    Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

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    A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

    Search for diboson resonances with boson-tagged jets in pp collisions at √s=13 TeV with the ATLAS detector

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    Narrow resonances decaying into WW, WZ or ZZ boson pairs are searched for in 36.7 fb−1 of proton–proton collision data at a centre-of-mass energy of √s=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The diboson system is reconstructed using pairs of large-radius jets with high transverse momentum and tagged as compatible with the hadronic decay of high-momentum W or Z bosons, using jet mass and substructure properties. The search is sensitive to diboson resonances with masses in the range 1.2–5.0 TeV. No significant excess is observed in any signal region. Exclusion limits are set at the 95% confidence level on the production cross section times branching ratio to dibosons for a range of theories beyond the Standard Model. Model-dependent lower limits on the mass of new gauge bosons are set, with the highest limit set at 3.5 TeV in the context of mass-degenerate resonances that couple predominantly to bosons

    Canagliflozin and renal outcomes in type 2 diabetes and nephropathy

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    BACKGROUND Type 2 diabetes mellitus is the leading cause of kidney failure worldwide, but few effective long-term treatments are available. In cardiovascular trials of inhibitors of sodium–glucose cotransporter 2 (SGLT2), exploratory results have suggested that such drugs may improve renal outcomes in patients with type 2 diabetes. METHODS In this double-blind, randomized trial, we assigned patients with type 2 diabetes and albuminuric chronic kidney disease to receive canagliflozin, an oral SGLT2 inhibitor, at a dose of 100 mg daily or placebo. All the patients had an estimated glomerular filtration rate (GFR) of 30 to <90 ml per minute per 1.73 m2 of body-surface area and albuminuria (ratio of albumin [mg] to creatinine [g], >300 to 5000) and were treated with renin–angiotensin system blockade. The primary outcome was a composite of end-stage kidney disease (dialysis, transplantation, or a sustained estimated GFR of <15 ml per minute per 1.73 m2), a doubling of the serum creatinine level, or death from renal or cardiovascular causes. Prespecified secondary outcomes were tested hierarchically. RESULTS The trial was stopped early after a planned interim analysis on the recommendation of the data and safety monitoring committee. At that time, 4401 patients had undergone randomization, with a median follow-up of 2.62 years. The relative risk of the primary outcome was 30% lower in the canagliflozin group than in the placebo group, with event rates of 43.2 and 61.2 per 1000 patient-years, respectively (hazard ratio, 0.70; 95% confidence interval [CI], 0.59 to 0.82; P=0.00001). The relative risk of the renal-specific composite of end-stage kidney disease, a doubling of the creatinine level, or death from renal causes was lower by 34% (hazard ratio, 0.66; 95% CI, 0.53 to 0.81; P<0.001), and the relative risk of end-stage kidney disease was lower by 32% (hazard ratio, 0.68; 95% CI, 0.54 to 0.86; P=0.002). The canagliflozin group also had a lower risk of cardiovascular death, myocardial infarction, or stroke (hazard ratio, 0.80; 95% CI, 0.67 to 0.95; P=0.01) and hospitalization for heart failure (hazard ratio, 0.61; 95% CI, 0.47 to 0.80; P<0.001). There were no significant differences in rates of amputation or fracture. CONCLUSIONS In patients with type 2 diabetes and kidney disease, the risk of kidney failure and cardiovascular events was lower in the canagliflozin group than in the placebo group at a median follow-up of 2.62 years
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