bluuebunny/crossref_metadata_2025 huggingface dataset:
Admission troponin-I predicts subsequent cardiac complications and mortality in acute stroke patients
Authors: Bustamante Alejandro , Díaz-Fernández Belén , Pagola Jorge , Blanco-Grau Albert , Rubiera Marta , Penalba Anna , García-Berrocoso Teresa , Montaner Joan
Published: June 2016

Purpose

The importance of troponin elevation at stroke presentation remains uncertain. We aimed to assess whether baseline ultrasensitive Troponin I (hs-TnI) predicts cardiac complications and outcome in acute stroke patients.

Method

Stroke patients admitted within 6 h were consecutively enrolled from May 2013 to March 2014. Blood samples were taken at admission to determine hs-TnI by chemiluminescent microparticle immunoassay. hs-TnI > 34.2 pg/ml (male) and >15.6 pg/ml (female) were considered elevated. Complications during in-hospital stay and outcome at 90 days were prospectively recorded. Independent predictors of cardiac complications (heart failure and acute coronary syndrome) and mortality were determined by logistic regression. The additional predictive value of hs-TnI was evaluated by integrated discrimination improvement index. A subanalysis was performed after excluding patients with previous cardiac diseases.

Findings

From 174 patients, 39(22%) had elevated hs-TnI, having these patients higher incidence of cardiac complications (57% versus 19%, p = 0.004). hs-TnI was an independent predictor of cardiac complications (OR = 16.1 (1.7–150.3)) together with diastolic blood pressure (OR = 0.92 (0.86–0.99)). Addition of hs-TnI to clinical variables significantly improved discrimination (IDI = 15.2% (7.8–22.7)). Subanalysis in patients without previous cardiac diseases showed similar results. Elevated hs-TnI was independently associated with 90 days mortality (OR = 3.6 (1.3–9.4)), but addition of hs-TnI to clinical data did not result in an increased discrimination.

Discussion

The present study confers hs-TnI a 2b level of evidence as a diagnostic tool to predict cardiac complications in stroke. Absence of serial hs-TnI measurements and limited sample size are the main weaknesses of the study.

Conclusion

Patients with elevated baseline hs-TnI showed a higher frequency of cardiac complications and a higher mortality. Measurement of hs-TnI in acute stroke might be useful to identify patients at a high risk of cardiac complications and death.
Another Proof of the Existence of GEI Equilibrium with Default and Exogenous Collateral
Authors: Orrilo Jaime
Published: June 2016

The existence of equilibria in a GEI model with default where short sales are backed by collateral (henceforth: exogenous collateral economy), has been demonstrated by Geanakoplos and Zame in a 2002 version of their paper (“Collateral, Default and Market Crashes”). On the other hand, Araújo et al. (2005) have recently provided a character- ization, via non arbitrage, of prices of defaultable assets backed by collateral. The aim of this paper is to provide an alternative proof of the existence of equilibria in an exoge- nous collateral economy by combining the demand approach used by Geanakoplos and Zame, and the characterization of collateralized asset prices offered by Araújo, Fajardo and Pascoa.
Combining Aggregate and Plant-Level Data to Estimate a Discrete-Choice Demand Model
Authors: DeSouza Sergio Aquino
Published: June 2016

This paper builds on the methodology developed by Katayma, Lu and Tybout (2003), who use a nested logit demand model to estimate demand parameters from plant-level data that usually report only revenue and cost ﬁgures. I demonstrate how to extend their framework by including the extra information provided by commonly available data on aggregate physical output. Using data from the Colombian beer industry from 1977 to 1990, the model, estimated through Bayesian Monte Carlo Methods, shows a sizeable precision gain in the parameter estimates once the aggregate variable is included.
Comparing Value-at-Risk Methodologies
Authors: Lima Luiz Renato , Néri Breno Pinheiro
Published: June 2016

In this paper, we compare four diﬀerent Value-at-Risk (V aR) methodologies through Monte Carlo experiments. Our results indicate that the method based on quantile regression with ARCH eﬀect dominates other methods that require distributional assumption. In particular, we show that the non-robust methodologies have higher probability of predicting V aRs with too many violations. We illustrate our ﬁndings with an empirical exercise in which we estimate V aR for returns of S˜ao Paulo stock exchange index, IBOVESPA, during periods of market turmoil. Our results indicate that the robust method based on quantile regression presents the least number of violations.
Recent insights into the molecular mechanisms of the NLRP3 inflammasome activation
Authors: Próchnicki Tomasz , Mangan Matthew S. , Latz Eicke
Published: June 2016

Inflammasomes are high-molecular-weight protein complexes that are formed in the cytosolic compartment in response to danger- or pathogen-associated molecular patterns. These complexes enable activation of an inflammatory protease caspase-1, leading to a cell death process called pyroptosis and to proteolytic cleavage and release of pro-inflammatory cytokines interleukin (IL)-1β and IL-18. Along with caspase-1, inflammasome components include an adaptor protein, ASC, and a sensor protein, which triggers the inflammasome assembly in response to a danger signal. The inflammasome sensor proteins are pattern recognition receptors belonging either to the NOD-like receptor (NLR) or to the AIM2-like receptor family. While the molecular agonists that induce inflammasome formation by AIM2 and by several other NLRs have been identified, it is not well understood how the NLR family member NLRP3 is activated. Given that NLRP3 activation is relevant to a range of human pathological conditions, significant attempts are being made to elucidate the molecular mechanism of this process. In this review, we summarize the current knowledge on the molecular events that lead to activation of the NLRP3 inflammasome in response to a range of K+efflux-inducing danger signals. We also comment on the reported involvement of cytosolic Ca2+fluxes on NLRP3 activation. We outline the recent advances in research on the physiological and pharmacological mechanisms of regulation of NLRP3 responses, and we point to several open questions regarding the current model of NLRP3 activation.
Case Report: Subacute onset of the motor-sensory axonal neuropathy variant of Gullain-Barré syndrome after epidural anesthesia
Authors: Kulas Søborg Marie-Louise , Rosenberg Jacob , Burcharth Jakob
Published: June 2016

Guillain-Barré syndrome (GBS) is an acute ascending peripheral neuropathy, caused by autoimmune damage of the peripheral nerves. GBS can be divided into three subtypes: acute inflammatory demyelinating neuropathy, acute motor axonal neuropathy, and the more rare type, acute motor and sensory axonal neuropathy (AMSAN). Reports of AMSAN with onset after epidural anesthesia and spinal surgery are extremely rare, and the linkage between development of GBS and neuroaxial anesthesia remains conclusively unconfirmed. We present a case in which the patient developed subacute motor and predominantly sensory neuropathy following epidural blockade. The case emphasizes the need of including AMSAN in differential diagnostic considerations to changes in motor and sensory function following epidural anesthesia, allowing accelerated rehabilitation and relevant alleviating therapy.
Optimal Continuous Pricing with Strategic Consumers
Authors: Briceño-Arias Luis , Correa José R. , Perlroth Andrés
Published: June 2016

An important economic problem is that of finding optimal pricing mechanisms to sell a single item when there are a random number of buyers who arrive over time. In this paper, we combine ideas from auction theory and recent work on pricing with strategic consumers to derive the optimal continuous time pricing scheme in this situation. Under the assumption that buyers are split among those who have a high valuation and those who have a low valuation for the item, we obtain the price path that maximizes the seller’s revenue. We conclude that, depending on the specific instance, it is optimal to either use a fixed price strategy or to use steep markdowns by the end of the selling season. As a complement to this optimality result, we prove that under a large family of price functions there is an equilibrium for the buyers. Finally, we derive an approach to tackle the case in which buyers’ valuations follow a general distribution. The approach is based on optimal control theory and is well suited for numerical computations.

This paper was accepted by Yinyu Ye, optimization.
Discordance with 3 Cardiac Troponin I and T Assays: Implications for the 99th Percentile Cutoff
Authors: Ungerer Jacobus Petrus Johannes , Tate Jillian Russyll , Pretorius Carel Jacobus
Published: June 2016

BACKGROUND

We compared the 99th percentile reference intervals with 3 modern cardiac troponin assays in a single cohort and tested the hypothesis that the same individuals will be identified as above the cutoff and that differences will be explained by analytical imprecision.

METHODS

Blood was collected from 2005 apparently healthy blood donors. Cardiac troponin was measured with Abbott Architect STAT high sensitive troponin I, Beckman Coulter Access AccuTnI+3, and Roche Elecsys troponin T highly sensitive assays.

RESULTS

The 99th percentile cutoff limits were as follows: Abbott cardiac troponin I (cTnI) 28.9 ng/L; Beckman Coulter cTnI 31.3 ng/L; and Roche cardiac troponin T (cTnT) 15.9 ng/L. Correlation among the assays was poor: Abbott cTnI vs Beckman Coulter cTnI, R2 = 0.18; Abbott cTnI vs Roche cTnT, R2 = 0.04; and Beckman Coulter cTnI vs Roche cTnT R2 = 0.01. Of the results above the cutoff 50% to 70% were unique to individual assays, with only 4 out of 20 individuals above the cutoff for all 3 assays. The observed differences among assays were larger than predicted from analytical imprecision.

CONCLUSIONS

The 99th percentile cutoff values were in agreement with those reported elsewhere. The poor correlation and concordance amongst the assays were notable. The differences found could not be explained by analytical imprecision and indicate the presence of inaccuracy (bias) that is unique to sample and assay combinations. Based on these findings we recommend less emphasis on the cutoff value and greater emphasis on δ values in the diagnosis of myocardial infarction.
Mucoadhesive systems in dentistry: A review
Authors: Rath Rishi , Tevatia Siddharth , Rath Anukriti , Behl Ashish , Modgil Vishal , Sharma Nikhil
Published: June 2016

For any treatment plan to succeed, two factors are paramount correct selection and application of pharmacologic agents and patient compliance. But what happens when both these are followed judiciously, but the medicine itself does not stay long enough to finish its action? Then we need something that will make the medicine stick literally. That is when bioadhesives have their say. Long-term adhesion of drugs to the oral mucosa is usually prevented by the continuous salivary flow and the mechanical movements of the tongue. Therefore, formulations acting as vehicle for local drug delivery to the oral mucosa need to have excellent mucoadhesive properties. The present article reviews mucoadhesive systems with various formulations that can be used in dentistry to improve local drug delivery.
Synthesis, investigation on structural and electrical properties of cobalt doped Mn–Zn ferrite nanocrystalline powders
Authors: Bhuvaneswari M. , Sendhilnathan S. , Kumar M. , Tamilarasan R. , Giridharan N.V.
Published: June 2016

Synthesis of CoxMnyZnyFe2O4 (x = 0.1, 0.5, 0.9 and y = 0.45, 0.25, 0.05) nanocrystalline powders was done by chemical co-precipitation method. The crystal structure was determined by using X-ray diffraction (XRD) studies. The crystallite size and lattice parameters were calculated from the XRD data. The XRD results revealed that the crystallite size of the nanocrystalline powder was found to decrease from 37 nm to 28 nm with the substitution of cobalt. The effect of cobalt ions on the crystallization process, the lattice parameters and electrical properties of Mn–Zn ferrites has been also investigated. The AC conductivity increased with an increase in frequency but it decreased with an increase in cobalt content. The complex impedance analysis of the data showed that the resistive and capacitive properties of the Co–Mn–Zn ferrite are predominant due to the fact that the processes are associated with the grains and grain boundaries. The dielectric constant and dielectric loss dependence on doping level and frequency at room temperature were also studied.
Photodegradation of Organic Pollutants on TiO2 P25 Surfaces Investigated by Transmission FTIR Spectroscopy Under In Situ UV-Vis Irradiation
Authors: Mino Lorenzo , Negri Chiara , Zecchina Adriano , Spoto Giuseppe
Published: June 2016

A new transmission FTIR set-up has been developed to investigate photocatalytic reactions under in situ UV-Vis
illumination and in controlled atmosphere. This system was employed to study the evolution of the surface species during
the photodegradation of phenol and oxalic acid on TiO2 P25. As far as phenol is concerned, dosage from the gas
phase on the activated oxide surface resulted in dissociative adsorption for coverages below the monolayer and in
physisorption beyond this limit. Experiments under UV irradiation showed no relevant photocatalytic activity
in absence of O2, the only spectroscopic consequence being the increase of a monotonic IR absorption, covering
nearly the whole MIR range, related to UV-generated free conduction electrons. Only the contemporary addition of
O2 and H2O to the TiO2/phenol system allowed us to observe an efficient photodegradation
reaction and to highlight the IR manifestations of some of the photodegradation products which are formed. In particular,
oxalic acid appeared to be the main intermediate product adsorbed at the oxide surface during phenol photodegradation. For
this reason the photoreactivity of pure oxalic acid on TiO2 under UV irradiation was also investigated.
Prepubertal Adiposity, Vitamin D Status, and Insulin Resistance
Authors: Cediel Gustavo , Corvalán Camila , López de Romaña Daniel , Mericq Verónica , Uauy Ricardo
Published: June 2016

OBJECTIVE:

To evaluate the following from prepuberty to the puberty-onset: (1) changes in serum 25-hydroxyvitamin-D (25[OH]D), adiposity, and insulin resistance (IR); (2) the effect of prepubertal adiposity on serum 25(OH)D changes; and (3) the combined effect of prepubertal obesity and suboptimal-25(OH)D on IR at puberty-onset.

METHODS:

A total of 426 prepubertal children (∼54% girls) were followed during pubertal-onset assessing before and after puberty-onset serum 25(OH)D, adiposity (BMI and waist circumference) and IR indicators (homeostasis-model-assessment of IR [HOMA-IR]). Associations were tested using multiple and logistic regression models adjusted by age, gender, and seasonality.

RESULTS:

At puberty-onset, mean serum 25(OH)D decreased (32.2 ± 8.9 Tanner I vs 25.2 ± 8.3 ng/mL Tanner II) and total and central obesity increased (BMI-for-age-z-score ≥2 SD [%]: 16.4 vs 22.1; waist-circumference ≥75th percentile [%]: 27.2 vs 37.1, all P < .05). Children with higher adiposity before puberty onset had higher risk of suboptimal-25(OH)D (<30 ng/mL) in Tanner II (ie, odds ratio = 2.7 [1.1–6.7] for obesity and 2.7 [1.4–5.5] for central-obesity) after adjusting for relevant covariates. Children with higher adiposity and suboptimal-25(OH)D before puberty-onset had higher HOMA-IR compared with their counterparts in Tanner II (HOMA-IR: 2.8 [2.5–3.1] if central-obese and suboptimal-25[OH]D vs 2.1 [1.9–2.3] no central-obesity and optimal-25[OH]D).

CONCLUSIONS:

We found that serum 25(OH)D declined with puberty-onset, likely because of adiposity increase. Moreover, children with the combined condition of central-obesity and suboptimal-25(OH)D before puberty-onset had higher pubertal IR. These results highlight the need of ensuring adequate-25(OH)D status before pubertal-onset, particularly in obese children.
Az autograftok szerepe a komplikált hasfali sérvek kezelésében
Authors: Martis Gábor , Damjanovich László
Published: June 2016

Absztrakt

Bevezetés: A komplikált (legalább egyszer kiújult és/vagy
többszörös és/vagy infektált graft) hasfali sérvek kezelése nem megoldott
probléma. Cél: Az eddig ismert lehetséges műtéti megoldások
bemutatása, valamint egy, a szerzők intézetében kidolgozott műtéti eljárás
hosszú távú eredményeinek bemutatása. Módszer: Konszekutív,
prospektív kohorsztanulmányban 2011. januártól 2015. szeptemberig 41, legalább
egyszer kiújult és/vagy sub- vagy enterocutan fistulával rendelkező, korábban
szintetikus grafttal rekonstruált hasfali sérvet kezeltek kettőzött autológ
irhagraft hasfali rekonstrukcióval. Minden beteget követtek és az eredményeket
folyamatosan regisztrálták. A sebészi komplikációkat, a hasfali elődomborodást
(bulking), a kiújulást és a betegek elégedettségét regisztrálták – többek között
– a beavatkozásokkal kapcsolatosan. A betegek klinikai adatai és az
eredmények: A csoportban (13 férfi / 28 nő) az átlagéletkor 59,2 év
volt. 1, 2, 3 alkalommal kiújult sérve 12, 23 és 6 betegnek volt. Az átlag-BMI
32,1 kg/m2 volt. 12 betegnek volt kezelt diabetes mellitusa. 13
betegnél egyidejűleg hasfali fistula és/vagy infektált szintetikus graft is
jelen volt. 13 betegnél seromaképződést észleltek. Két betegnél alakult ki
fistula. Három betegnél regisztráltak hasfali elődomborodást, és három esetben
recidív hasfali sérv jelentkezett 13, 17 és 19 hónappal a műtét után. A korábbi
műtét(ek) során kialakult enterocutan és subcutan fistula minden esetben
szanálódott. Exitus letalis nem fordult elő. Következtetés: Az
alkalmazott módszer jól használható a komplikált, infektált incisionalis sérvek
megoldására. A műtéti technika elsajátítása után biztonságosan alkalmazható és
alacsony kiújulással jár. A módszer alkalmazása obes, nagy kockázatú betegeknél
(BMI ≥ 25 kg/m2) ajánlott. További klinikai vizsgálatok elvégzése
szükséges a módszer végső megítéléséhez.
Highly sensitive UHPLC—MS/MS method for quantification of ethylenediamine-N,N′-di-2-(3-cyclohexyl) propanoic acid derivatives in mouse serum
Authors: Tubić Biljana K. , Marković Bojan D. , Vladimirov Sandra S. , Ristić Slavica M. , Ivković Branka M. , Savić Miroslav M. , Poljarević Jelena M. , Sabo Tibor J.
Published: June 2016

A series of new (S,S)-ethylenediamine-N,N′-di-2-(3-cyclohexyl)propanoate esters has shown cytotoxic activity towards human leukemic cell lines. The aim of this study was to develop and validate a bioanalytical method for quantification of (S,S)-O,O-diethyl-ethylenediamine-N,N′-di-2-(3-cyclohexyl)propanoate dihydrochlorides (DE-EDCP) and its metabolite, substituted propanoic acid (EDCP), in mouse serum by ultra high-performance liquid chromatography—tandem mass spectrometry (UHPLC—MS/MS). Structural analog, derivative of 1,3-propanediamine, was used as an internal standard (IS). Sample preparation employed protein precipitation by acetonitrile and subsequent centrifugation. Optimal UHPLC separation conditions were set to achieve simultaneous determination of both compounds in a short run time of 6 min. Additionally, the selected reaction monitoring (SRM) mode developed in this method allowed a highly sensitive, accurate, and precise identification of compounds of interest. The lower limit of quantitation (LOQ) was 1.3 ng mL−1 for DE-EDCP and 0.3 μg mL−1 for EDCP. The calibration curves were linear over the concentration range of 1.3–26.7 ng mL−1 and 0.3–6.7 μg mL−1 for DE-EDCP and EDCP, respectively. Precision (%CV) and accuracy (%RE) for DE-EDCP and EDCP ranged from 3.5% to 16.0% and from 1.8% to 14.4%, respectively.

The validation process was performed in accordance with the regulatory guidance/guideline, and all of the obtained results met the established acceptance criteria. The newly developed and validated UHPLC—MS/MS method is rapid, sensitive, and selective, and it can be successfully applied to drug monitoring in nonclinical studies.
Dracontium nivosum (Lem.) G.H.Zhu (Araceae): range extension from Amazonia to a brejo forest refugium in Northeast Brazil confirmed
Authors: De Andrade Ivanilza M. , Silva M. Francilene S. , Ribeiro Thales A. , Mayo Simon J.
Published: June 2016

The 558 km range extension of the Amazonian aroid Dracontium nivosum (Lem.) G.H.Zhu into semi-arid Northeast Brazil is confirmed. This species occurs in Ceará in threatened fragments of brejo forest at ca. 580–870 m elevation. An illustrated taxonomic description is provided. The species’  Extent of Occurrence (EOO) is estimated as 356,392 km2 (meets Least Concern); the Area of Occupancy (AOO), 60 km2 using a 2×2 km cell (Endangered). Within Ceará the EOO is 41.4 km2 (Critically Endangered) and the AOO is 16 km2 (Endangered).
Arhythmorhynchus comptus (Acanthocephala: Polymorphidae) from shorebirds in Patagonia, Argentina, with some comments on a species of Profilicollis
Authors: Capasso Sofia , Diaz Julia I.
Published: June 2016

Adult and immature Arhythmorhynchus comptus (Acanthocephala: Polymorphidae) were found parasitizing the Baird’s Sandpiper, Calidris bairdii, and the White-rumped Sandpiper, Calidris fuscicollis (Aves: Scolopacidae), from several locations in Patagonia, Argentina. This is the first record of A. comptus in the southern part of South America and from C. fuscicollis and C. bairdii, expanding both its geographical and host distribution. Additionally, immature specimens belonging to the genus Profilicolliswere found in both bird species.
First record of the Neotropical myrmicine ant genus Kempfidris Fernández, Feitosa & Lattke, 2014 (Hymenoptera: Formicidae) for Peru
Authors: Camacho Gabriela P. , Feitosa Rodrigo M.
Published: June 2016

The ant genus Kempfidris comprises a single rarely collected species, Kempfidris inusualis (Fernández, 2007). The record presented here represents an extension of this species distribution in the Amazon Basin of approximately 593 km to the south. The specimens were collected in the leaf litter of a seasonally flooded area. This record consolidates the hypothesis that K. inusualis is a ground-dwelling species that inhabits leaf litter and probably nests in rotten logs or other dead wood. This finding highlights the importance of the choice of proper sampling methods to uncover the hidden fauna of a given locality.
Distribution extension of Syphacia (Seuratoxyuris) peromysci Harkema, 1936 (Nematoda, Syphaciinae) parasitizing the Rock Mouse, Peromyscus difficilis (J. A. Allen, 1891) (Rodentia, Neotominae) in central Mexico
Authors: Falcón-Ordaz Jorge , Fernández Jesús A. , Ruíz-Vázquez Belén Aline
Published: June 2016

As a part of an ongoing project in order to inventory the helminth parasites of rodents in Mexico, 49 individuals of Syphacia (Seuratoxyuris) peromysci were collected from five specimens of the Rock Mouse Peromyscus difficilis caught in Veracruz state, Mexico. This is the first report of S. peromysci in a Mexican endemic rodent, widening the known distribution of the species to the southern portion of the country.
Estado de saúde e retorno ao trabalho após os acidentes de trânsito
Authors: Paiva Luciana , Pompeo Daniele Alcalá , Ciol Márcia Aparecida , Arduini Glendha Oliveira , Dantas Rosana Aparecida Spadoti , Senne Eva Claudia Venâncio de , Rossi Lídia Aparecida
Published: June 2016

RESUMO Objetivo: comparar o estado de saúde de vítimas de acidente de trânsito, na alta hospitalar e após 6 meses, bem como analisar as variáveis preditoras do estado de saúde e retorno ao trabalho. Método: estudo observacional, longitudinal. Dados coletados por entrevistas e consulta aos prontuários, com 102 pacientes com média de idade de 33 anos; a maioria, homens e vítimas de acidente motociclístico. As variáveis foram avaliadas por instrumentos validados, analisadas por teste "t" de Student, regressão linear múltipla e regressão logística. Resultados: houve melhora da percepção do estado de saúde 6 meses após alta associada à idade, medida geral do estado de saúde imediatamente após a alta e capacidade funcional. Os indivíduos que retornaram ao trabalho apresentaram melhor avaliação da qualidade de vida relacionada à saúde. Conclusão: constatou-se melhora da percepção do estado de saúde 6 meses após a alta. Não foram identificados fatores que influenciaram o retorno ao trabalho.
Impacto da visita domiciliar na capacidade funcional de pacientes com úlceras venosas
Authors: Joaquim Fabiana Lopes , Camacho Alessandra Conceição Leite Funchal , Sabóia Vera Maria , Santos Renata da Costa , Santos Lívia da Silva Firmino dos , Nogueira Glycia de Almeida
Published: June 2016

RESUMO Objetivo: avaliar o impacto da visita domiciliar protocolar na capacidade funcional de pacientes adultos e idosos com úlceras venosas antes e após as orientações recebidas em domicílio. Método: estudo clínico experimental, randomizado não cego e controlado, desenvolvido com 32 pacientes (grupos caso e controle). Os campos de investigação foram o Ambulatório de Reparo de Feridas do Hospital Universitário Antônio Pedro e os domicílios de pacientes atendidos no referido ambulatório. A coleta ocorreu de fevereiro a junho de 2014, por meio de instrumento de avaliação da unidade de saúde, do índice de TINETTI e de roteiro de orientações a serem prestadas aos sujeitos da pesquisa que receberam visita domiciliar. Resultados: os participantes do grupo caso apresentaram melhora significativa e diferenciada pós-intervenção quando comparados aos do grupo controle, que se mantiveram estáveis. Conclusão: as orientações no contexto domiciliar foram benéficas aos integrantes do grupo caso.
Fragilidade e qualidade de vida de idosos usuários da atenção básica de saúde
Authors: Lenardt Maria Helena , Carneiro Nathalia Hammerschmidt Kolb , Binotto Maria Angélica , Willig Mariluci Hautsch , Lourenço Tânia Maria , Albino Jéssica
Published: June 2016

RESUMO Objetivo: investigar a associação entre fragilidade física e qualidade de vida de idosos usuários da atenção básica de saúde da capital paranaense. Método: estudo quantitativo transversal realizado com 203 idosos. Os dados foram coletados mediante questionários de nível de atividade física, perda de peso, fadiga/exaustão, qualidade de vida e realização de testes de velocidade da marcha e força de preensão manual. Resultados: dos 203 idosos, 115 eram pré-frágeis, 49 não frágeis, 39 frágeis, havendo em todos os grupos associação significativa para a dimensão capacidade funcional da qualidade de vida. As dimensões limitações por aspectos físicos, dor e vitalidade foram associadas aos não frágeis. Conclusão: no presente estudo, a síndrome da fragilidade se mostrou inversamente proporcional à qualidade de vida e associada significativamente à capacidade funcional dos idosos. Entende-se que a fragilidade física é uma condição gerenciável e pode ser alvejada por meio de intervenções da enfermagem gerontológica.
Pacientes com HIV/Aids e risco de ulcera: demandas de enfermagem
Authors: Pereira Lanara Alves , Feitosa Manuella Carvalho , Silva Grazielle Roberta Freitas da , Leite Illoma Rossany Lima , Silva Maria Esther , Soares Rômulo Diego Monte
Published: June 2016

RESUMO Objetivo: analisar a demanda de cuidados de enfermagem e o risco para desenvolvimento de úlcera por pressão (UP) em pacientes com HIV/Aids. Método: pesquisa quantitativa, realizada de dezembro de 2012 a março de 2013 em hospital público de Teresina-PI. Resultados: a amostra de 31 pacientes foi majoritariamente do sexo masculino, média de 36,6 anos de idade, média da demanda de cuidados de 49,4% e a maioria apresentou algum risco para desenvolver UP. As variáveis correlacionadas com o risco para o desenvolvimento de UP foram: demanda de cuidados e desfecho clínico (óbito). Já as que se associaram com a demanda de cuidados foram: idade e desfecho clínico (óbito). Conclusão: Os resultados obtidos demonstram que os pacientes demandam moderada necessidade de cuidados de enfermagem e maior parte deles apresenta risco para desenvolvimento de UP.
Importância das organizações civis de enfermagem: revisão integrativa da literatura
Authors: Santos James Farley Estevam dos , Santos Regina Maria dos , Costa Laís de Miranda Crispim , Almeida Lenira Maria Wanderley Santos de , Macêdo Amanda Cavalcante de , Santos Tânia Cristina Franco
Published: June 2016

RESUMO Objetivo: identificar e analisar as evidências trazidas por estudos sobre a importância das organizações civis de enfermagem. Método: trata-se de uma revisão integrativa da literatura em que foram realizadas buscas nos bancos de dados LILACS, PubMed/MEDLINE, SciELO, BDENF e Scopus. Resultados: foram selecionados 16 artigos publicados entre os anos de 2004 a 2013, sendo que 68,75% dos trabalhos são originados do Brasil e 31,25% são publicações estadunidenses. Conclusão: as entidades da Enfermagem são importantes e necessárias, pois têm colaborado decisivamente nas lutas da categoria em favor da classe e da sociedade em geral, e essas contribuições incidem sobre os vários eixos de atuação profissional.
Efeito de coberturas do solo sobre a sobrevivência de Macrophomina phaseolina no feijão-caupi
Authors: Linhares Cheyla Magdala de Sousa , Freitas Francisco Cláudio Lopes de , Ambrósio Márcia Michelle de Queiroz , Cruz Beatriz Letícia Silva da , Dantas Andréa Mirne de Macêdo
Published: June 2016

RESUMO Com o objetivo de avaliar a sobrevivência de Macrophomina phaseolina em solo submetido a diferentes coberturas, conduziu-se dois experimentos em casa de vegetação, no delineamento inteiramente casualizado, em esquema fatorial 5 x 2, com cinco coberturas (Brachiaria brizantha, Pennisetum glaucum, Crotalaria spectabilis, solo coberto com filme de polietileno e solo sem cobertura) e solo esterilizado e não esterilizado. No primeiro experimento, as plantas foram cultivadas em vasos e dessecadas, para posterior plantio do feijão-caupi e no segundo, a semeadura da cultura foi realizada em sucessão ao primeiro cultivo. Nos dois experimentos foram colocadas em cada vaso a 10 cm de profundidade, no dia do plantio da cultura, quatro bolsas de tecido contendo, cada uma, 10 gramas de inóculo de M. phaseolina, das quais, duas foram retiradas aos 30 dias após o plantio e duas no final do ciclo da cultura, para posterior plaqueamento e determinação da sobrevivência. Realizou-se também o monitoramento das temperaturas máximas e mínimas diárias do solo. Os tratamentos com solo coberto com material vegetal apresentaram menor elevação da temperatura em relação ao solo coberto com filme de polietileno e sem cobertura, que elevaram a temperatura em até 5,9 e 3,9 ºC, respectivamente, em relação ao solo coberto com palhada de P. glaucum. O solo coberto com filme de polietileno e sem cobertura apresentaram maiores taxas de sobrevivência de M. phaseolina e o solo coberto com palhada de P. glaucum a menor taxa. Maior sobrevivência foi observada no solo não esterilizado.
Reaction of detached leaves from different varieties of sweet orange to inoculation with Xanthomonas citri subsp. citri
Authors: Gonçalves-Zuliani Aline Maria Orbolato , Cardoso Kátia Aparecida Kern , Belasque Junior José , Zanutto Carlos Alexandre , Hashiguti Heraldo Takao , Bock Clive Howard , Nakamura Celso Vataru , Nunes William Mário de Carvalho
Published: June 2016

ABSTRACT Citrus genotypes show a broad range of resistance to infection with Xanthomonas citri subsp citri (Xcc), the causal agent of Asiatic citrus canker (ACC). The aim of this study was to evaluate a detached leaf inoculation method to compare nine different citrus genotypes that exhibit varied resistance levels to ACC, and to evaluate infection, colonization and symptom development of the varieties by using Scanning Electron Microscopy (SEM). Inoculation of Xcc in the leaves was carried out by producing injuries with needles. Lesion diameters were measured at 7, 10 and 13 days after inoculation (DAI). The variety Pera IAC was most resistant to the pathogen and had lesions with smaller diameters, while the variety Washington was most susceptible and had the largest lesions, indicating low resistance to Xcc. SEM images were taken from the lesion development, and sections were obtained from the disease lesions in the tested varieties. The most resistant variety, Pera IAC, had smaller stomatal openings and produced greater quantity of foliar exudates, compared with the variety Washington. We hypothesize that the exudates may contain Xcc toxic compounds and thus may be a defense mechanism against infection by Xcc, but further research is required to establish any antibiotic effects of the exudates against citrus canker.
Contact pressures and the impact of farm equipment on Latosol with the presence and absence of sugarcane straw
Authors: Silva Reginaldo Barboza da , Iori Piero , Souza Zigomar Menezes de , Pereira Danilo de Moraes Gomes , Vischi Filho Oswaldo Julio , Silva Francisca Alcivania de Melo
Published: June 2016

ABSTRACT High contact pressures applied to soil result in a greater degree of compaction, in addition to promoting other negative effects. The objective of this study was to quantify contact areas by using different methodologies, and pressures of farm equipment employed in production activity and evaluate structural changes caused in a Red Latosol with the presence and absence of straw cover. The design was completely randomized in a factorial scheme of type 4 (tire on front axle, tire on rear axle, tire on a sugarcane wagon and metallic track of sugar cane Harvester) x 2 (presence and absence of straw). The contact area (CA) of the run was obtained by three procedures: analytical measure of the area of an ellipse (CA1); digital measurement of area of an ellipse (CA2); and measurement of real contact area (RCA), with digital resources. The contact pressure was calculated from the ratio of mass of each machine's axle and the contact area of the run. The contact area obtained according to the procedure of the ellipse (CA1 and CA2) is overrated when compared to actual area obtained digitally (RCA). The straw reduces the contact pressure in the soil, due to the deep tire treads and consequently, increased contact area. Areas where the traffic of the machines occurred with soil covered with the presence of straw showed reduced soil resistance to penetration, cone index and pre-consolidation pressure, confirming that the increased contact area produced by straw reduced the pressure applied and the compression power dissipated in the soil.
Alternative potassium source for the cultivation of ornamental sunflower
Authors: Torqueti Sabrina Thereza dos Santos , Boldrin Karina Volpi Furtini , Nascimento Ângela Maria Pereira do , Paiva Patrícia Duarte de Oliveira , Furtini Neto Antônio Eduardo , Luz Iracema Clara Alves
Published: June 2016

ABSTRACT Brazil is dependent on importation of fertilizers, especially the potassics. Rocks and minerals that contain nutrients have a potential for use in agriculture as fertilizer, especially those of slow solubilization and that exhibit residual effect. In this context, the objective was to assess the feasibility of glauconite rock as potassium source for the cultivation of ornamental sunflower. The experiment was conducted under controlled conditions arranged in an entirely randomized design, in a 4x4 + 4 factorial scheme, with four replicates and one plant per plot. Four glauconite-based fertilizers were used as a potassium source: fine grained glauconite, fine grained organo-mineral glauconite, coarse grained glauconite and coarse grained organo-mineral glauconite, in four doses, as well as an additional treatment with four doses of KCl, the principal conventional source of the nutrient. The height of the flower stalks, the diameter of the stem and floral capitulum, the number of cultivation days and post-harvest durability were evaluated. The application of KCl yielded the production of flower stems with greater height and larger capitulum diameter in relation to the supply of glauconite. Among the glauconite based fertilizers, the fine grained organo-mineral product provided the best flower charateristics. The postharvest commercial durability of the flower stalks was higher in plants that received the glauconite and fine grained organo-mineral glauconite. The fine grained organo-mineral glauconite surpasses all other alternative sources of potassium in relation to the agronomic characteristics evaluated.
Nitrate and potassium concentration in fertigated soil cultivated with wine vines
Authors: Silva Alexsandro Oliveira da , Silva Davi José , Bassoi Luis Henrique
Published: June 2016

ABSTRACT In the semiarid region of Brazil the use of irrigation systems for applying fertilizers in horticulture is the primary means for incorporating nutrients in the soil. However, this technique still requires its use in wine vines to be assessed. In view of this, this study aimed to assess nitrate and potassium concentrations in soil fertigated with nitrogen and potassium fertilizers in 3 wine grape growing cycles. A field experiment was conducted with 'Syrah' wine grapes, in Petrolina, Pernambuco, Brazil; it assessed five nitrogen doses (0, 15, 30, 60 and 120 kg ha-1) and five K2O doses (0, 15, 30, 60 and 120 kg ha-1) applied by drip irrigation system with two emitters per plant, with a flow rate of 4 L h-1. The experimental design used was the factorial split-plot, making up 13 combinations arranged in 4 randomized blocks. Soil solution samples were collected weekly with the aid of porous cup extractors for all treatments and at depths of 0.4 and 0.6 m by determining nitrate and potassium concentrations and electrical conductivity. Increased levels of both nutrients in the irrigation water increased the availability of nitrate and potassium in the soil solution. The highest nitrate and potassium concentrations were found in the second growing cycle at both depths studied.
Management strategies of Eremanthus erythropappus (DC.) MacLeish under different initial spacing
Authors: Scolforo José Roberto Soares , Altoe Thiza Falqueto , Scolforo Henrique Ferraco , Mello Jose Marcio de , Silva Charles Plinio Castro e , Ferraz Filho Antonio Carlos
Published: June 2016

ABSTRACT Eremanthus erythropappus, commonly known as candeia, is an income-generating tree native to Brazil. This is due to the high durability of its wood and its essential oil containing the active component alpha bisabolol. Despite this economic potential, until the early 2000's no studies existed to explore the sustainable management in areas in which the species naturally occurs or for establishing commercial plantations. This study proposes new management strategies based on an individual tree model, and evaluates the growth behavior of candeia trees planted in different spacing. The experiment was installed in March 2002, in Carrancas municipality, Minas Gerais state, Brazil. The experimental area was divided into 4 blocks with 4 different spacings as treatments. The individual model used to propose the best management system uses development of crown area as a function of DBH. The results showed that candeia trees were sensitive to initial spacing variation. With increased initial spacing, candeia trees reached competition later, as demonstrated by crown area development. Thus, candeia trees planted at a wider spacing maintain a desirable growth rate without need for thinning for a longer time, compared to trees planted at narrower spacing. The fitted individual tree model presented in this study showed consistent results and flexibility, providing alternatives for different management strategies. The best growth response was obtained for planting densities greater than 3.75 m² per tree, which corresponds to a spacing of 1.5 x 2.5 m.
Caracterização do atraso no diagnóstico do câncer de boca e orofaringe em dois centros de referência
Authors: Le Campion Anna Carolina Omena Vasconcellos , Santos Karine de Cássia Batista dos , Carmo Elisandra Silva do , Silva Júnior Francisco Feliciano da , Peixoto Fernanda Braga , Ribeiro Camila Maria Beder , Gonçalves Lucio Souza , Ferreira Sonia Maria Soares
Published: June 2016

Resumo Objetivo Estimar se variáveis clínicas e epidemiológicas influenciam no atraso do diagnóstico em dois centros de referência. Métodos Foi realizado um estudo analítico longitudinal retrospectivo. Todos os prontuários de pacientes maiores de 18 anos diagnosticados no período de junho de 2005 a junho de 2013 foram analisados por meio do SPSS® 20. Para testar associações entre as variáveis epidemiológicas e clínicas com os atrasos do paciente e do profissional, foram utilizados os testes: ANOVA, t de Student e Kruskal-Wallis. Resultados Foram incluídos no estudo 121 prontuários. Prevaleceram pacientes do sexo masculino, com idade média de 64,3 anos (DP=12,94), pardos, procedentes do interior, analfabetos, tabagistas e etilistas. A grande maioria (85,1%) foi diagnosticada nos estádios avançados. O maior atraso estava relacionado ao paciente, com média de tempo de 197,8 dias (DP=323,9). O atraso no diagnóstico profissional foi de 20 dias (DP=25,9), e aquele relacionado ao sistema de saúde foi de 71,1 dias (DP=71,7). Não houve associação entre as variáveis clínicas/epidemiológicas e o atraso no diagnóstico (do paciente e do profissional). Conclusão De acordo com os resultados do presente estudo, as variáveis clínicas e epidemiológicas não influenciam no atraso do diagnóstico.
Sintomas depressivos em adolescentes em situação de vulnerabilidade social
Authors: Barbosa Diego Grasel , Andrade Rubian Diego , Teixeira Clarissa Stefani , Gomes Filho Neto Manoel , Felden Érico Pereira Gomes
Published: June 2016

Resumo Objetivo Identificar os principais indicadores de depressão de amostra de adolescentes em vulnerabilidade social e associar com variáveis sociodemográficas e comportamentais. Método: A amostra foi composta por 135 adolescentes em vulnerabilidade social de Florianópolis, Santa Catarina. Indicadores de depressão foram investigados por meio do Children’s Depression Inventory (CDI). Para comparação entre os sexos, utilizou-se o teste U de Mann-Whitney. Com o objetivo de identificar os fatores de agrupamento entre os sintomas depressivos, recorreu-se à análise fatorial com rotação ortogonal varimax normalized. Além disso, a Regressão de Poisson foi utilizada no sentido de identificar as razões de prevalências, tendo como variável desfecho o tercil superior da pontuação do CDI. Resultados: Os indicadores “perda ou ganho de peso”, “baixa autoestima” e “fadiga” apresentaram maior poder explicativo dos escores do CDI. Os meninos atingiram maior pontuação média (24,9 pontos). Os índices do CDI foram altos independentemente de questões sociodemográficas, como etnia, e comportamentais, tempo em frente à televisão e ao computador ou videogame. Conclusão: Foram observadas altas prevalências de sintomatologia depressiva nos adolescentes em situação de vulnerabilidade social, com destaque para os meninos, que possuíram 2,24 vezes maior probabilidade de apresentar pontuação elevada no CDI em comparação às meninas.
Comportamentos e conhecimentos de cirurgiões-dentistas da atenção primária à saúde quanto ao câncer bucal
Authors: Souza João Gabriel Silva , Sá Maria Aparecida Barbosa de , Popoff Daniela Araújo Veloso
Published: June 2016

Resumo Introdução Considerando a importância da prevenção e do diagnóstico precoce do câncer bucal, a atenção primária à saúde é uma ambiência apropriada para o desenvolvimento dessas ações, e a atenção odontológica exerce papel estratégico nesse enfrentamento. Portanto, objetivou-se identificar os comportamentos e os conhecimentos dos cirurgiões-dentistas inseridos na atenção primária à saúde quanto ao câncer bucal. Métodos: Tratou-se de um estudo transversal conduzido a partir de entrevistas com cirurgiões-dentistas da Estratégia de Saúde da Família. O teste de Mann-Whitney comparou as variáveis independentes às dependentes. Resultados: Dos 70 cirurgiões-dentistas avaliados, a maioria foi identificada com conhecimento satisfatório (82,6%), porém diferindo em relação à capacidade de fornecer informações preventivas (p<0,001), de realizar citologia esfoliativa (p=0,011) e na classificação do nível de ensino que obteve na graduação sobre câncer bucal (p<0,001). Quanto aos comportamentos, a maioria foi identificada com comportamento insatisfatório (52,2%), diferindo em relação à importância dada ao exame dos tecidos moles nas consultas iniciais (p=0,005), investigação de fatores de risco (p=0,002), fornecimento de informações sobre autoexame da boca (p<0,001) e realização de atividades preventivas (p=0,029). Conclusão: A maior parte dos cirurgiões-dentistas avaliados possui conhecimentos satisfatórios relacionados ao câncer bucal. Entretanto, o conhecimento demonstrado não tem sido colocado em prática em suas atividades laborais.
Uso da metodologia REML/BLUP para seleção de genótipos de algodoeiro com maior adaptabilidade e estabilidade produtiva
Authors: Carvalho Luiz Paulo de , Farias Francisco José Correia , Morello Camilo de Lellis , Teodoro Paulo Eduardo
Published: June 2016

RESUMO A metodologia máxima verossimilhança restrita/melhor preditor linear não viesado (REML/BLUP) tem sido utilizada para interpretação da estabilidade genotípica e da adaptabilidade de culturas como feijão, canade-açúcar, cajueiro, eucalipto e arroz, porém pesquisas com o algodão ainda são limitadas. O objetivo deste trabalho foi selecionar genótipos de algodoeiro, via modelos mistos, que reúnem simultaneamente adaptabilidade e estabilidade produtiva e verificar se essa metodologia pode ser utilizada nos programas de melhoramento genético do algodoeiro. Foram avaliadas 36 linhagens em três ensaios localizados em Apodi, RN (2013 e 2014), e Santa Helena, GO (2013), em delineamento de blocos casualizados com duas repetições. Os parâmetros genéticos foram estimados pela metodologia REML/BLUP, e a seleção baseou-se no método da média harmônica da performance relativa dos valores genéticos (MHPRVG), com três estratégias: seleção com base no valor genético predito, tendo-se considerado o desempenho médio dos genótipos em todos os ambientes (sem efeito de interação); o desempenho em cada ambiente (com efeito da interação); e seleção simultânea quanto à produtividade de algodão em caroço, adaptabilidade e estabilidade. Os genótipos CNPA 2012-60 e CNPA 2012-65 podem ser cultivados em ambientes similares aos testados, pois reúnem alta adaptabilidade e estabilidade produtiva de algodão em caroço. Houve concordância entre as estatísticas utilizadas na discriminação dos genótipos mais produtivos e com alta adaptabilidade e estabilidade, o que indica que as mesmas podem fazer parte de critérios seletivos na rotina dos programas de melhoramento do algodoeiro.
A simple model for the normal stress distribution of the Great Pyramid
Authors: Tort A C
Published: June 2016

A model for the normal stress distribution of the Great Pyramid is presented. The model is sufficiently simple as to be discussed at a basic university physics level
Disco de Newton com LEDs
Authors: Silveira M V , Barthem R B
Published: June 2016

Há muitos anos que o chamado “disco de Newton” vem sendo usado no ensino de óptica na tentativa de ilustrar o mecanismo da percepção espectral da luz visível pelo olho humano. Sua proposta é de que, ao ser girado, aparente ter a cor branca, que é a soma de todas as cores do espectro nele estampadas. De fato, a cor resultante que se percebe é um tom de cinza, visto que neste caso ocorre uma síntese subtrativa. A proposta desse trabalho é construir um disco, como o de Newton, no qual podemos compor através de LEDs coloridos não apenas a cor branca, como também a amarela, a ciano e a magenta. Dessa vez, as cores são geradas através da síntese aditiva com base na teoria tricromática de Young-Helmholtz.