bluuebunny/crossref_metadata_2025 huggingface dataset:
Intrapartum ultrasound prior to Kristeller maneuver: an observational study
Authors: Cuerva Marcos Javier , Tobias Pablo , Espinosa Jose Angel , Bartha Jose Luis
Published: July 2014

Objectives: To evaluate the accuracy of criteria followed by obstetricians when performing a Kristeller maneuver in cases of prolonged second stage of labor.

Methods: In this prospective observational study, the station of the fetal head was measured using the angle of progression (intrapartum ultrasound) just prior to the intervention of the managing obstetrician in 52 women with prolonged second stage of labor. The managing obstetricians were blinded to the sonographic results. The decision of performing a Kristeller maneuver was taken by the obstetricians based on digital palpation and their experience. Delivery mode, Apgar score, umbilical artery pH value, episiotomy, perineal tears, bleeding, and time to delivery were recorded.

Results: Kristeller maneuver was performed in 36/52 (69.2%) cases. There were no significant differences between the Kristeller and the non-Kristeller group regarding the angle of progression. There were no significant differences between both groups with respect to delivery mode, perineal tears, episiotomy, bleeding, Apgar score, and umbilical artery pH value.

Conclusions: Our study failed to define any criteria followed by obstetricians when performing a Kristeller maneuver in cases of prolonged second stage of labor. There was no relation between the angle of progression and the decision to perform a Kristeller maneuver.
Multilevel Monte Carlo for Asian options and limit theorems
Authors: Ben Alaya Mohamed , Kebaier Ahmed
Published: July 2014

The purpose of this paper is to study the problem of pricing Asian
options using the multilevel Monte Carlo method recently introduced by
Giles [Oper. Res. 56 (2008), no. 3, 607–617] and to prove a central limit theorem of Lindeberg–Feller
type for the obtained algorithm.
Indeed, the implementation of such a method requires first a discretization
of the integral of the payoff process.
For this, we use two well-known second order discretization schemes, namely,
the Riemann scheme and the trapezoidal scheme. More precisely, for each of these schemes,
we prove a stable law convergence result for the error
on two consecutive levels of the algorithm.
This allows us to go further and prove two central limit theorems on the
multilevel algorithm providing us a precise description on the choice of the
associated parameters with an explicit representation of the limiting variance.
For this setting of second order schemes, we give new optimal parameters
leading to the convergence of the central limit theorem. The complexity of
the multilevel Monte Carlo algorithm will be determined.
Extended metal-carbohydrate frameworks
Authors: Liu Zhichang , Stoddart J. Fraser
Published: July 2014

Cyclodextrins (CDs) – a family of cyclic oligosaccharides – are ideal building blocks for the construction of environmentally benign materials. Herein, we reflect upon the serendipitous discovery of two classes of extended crystalline materials – referred to as cyclodextrin metal-organic frameworks (CD-MOFs) and CD-Bamboo – based on CDs which offer opportunities for potential applications in the world of industry and commerce all the way from sequestering carbon dioxide to extracting gold in an eco-friendly manner. The crucial role of serendipity in scientific research expresses itself two times over at the boundaries between coordination chemistry with materials science.
Erinnerungslücke Holocaust
Authors: Rossoliński-Liebe Grzegorz
Published: July 2014

Vorspann

Rund ein Viertel aller Opfer des Holocaust stammte aus der Ukraine, die Juden kamen oft bei Massenerschießungen in der Nähe ihrer Wohnorte ums Leben. Obwohl der mörderische Genozid hier so präsent war wie kaum anderswo, taucht er in der Erinnerungsliteratur der ukrainischen Diaspora an den Zweiten Weltkrieg so gut wie gar nicht auf. Grzegorz Rossoliński-Liebe, ausgewiesener Spezialist für die Geschichte des ukrainischen Nationalismus, vermisst diesen „weißen Fleck“ des historischen Gedächtnisses und analysiert das Narrativ, das ihn hervorgebracht hat.
Weltrevolutionär im Abseits
Authors: Vatlin Alexander
Published: July 2014

Vorspann

In vielen Darstellungen der revolutionären Ereignisse in Bayern 1918/19 taucht der Name Tobias Axelrod auf. Seine Rolle in der Münchner Räterepublik ist bekannt, doch darüber hinaus lagen über sein Leben bislang nur sporadische Informationen vor. Der Moskauer Historiker Alexander Vatlin hat sich in russischen und deutschen Archiven auf eine biografische Spurensuche begeben und zeichnet das Porträt eines rastlosen Revolutionärs, dem zur politischen Karriere Glück und Talent fehlten und der am Ende Stalins Terror zum Opfer fiel.
Laboratory Investigation of Nonuniformly Reinforced Soil-Retaining Structures
Authors: Porbaha Ali , Goodings Deborah J.
Published: July 2014

Vertical and sloping model walls and steep slopes were built with uniform and nonuniform geotextile and backfilled with cohesive clay soil and tested to failure using a geotechnical centrifuge. The results demonstrate an overall better performance for nonuniformly reinforced models compared to the uniformly reinforced walls and slopes with equal reinforced volumes in terms of postponing the development of tension crack, increasing the prototype equivalent height at failure, and improving the reinforcement effect. These effects were more dominant for vertical walls than for slopes of 63.4° (1H:2V). However, the uniformly reinforced walls and slopes showed a better sign of warning prior to failure. Limit equilibrium stability analysis using the simplified Bishop method incorporating tangential and/or horizontal reinforcement was found to be a good predictor of model behavior. The implications of this investigation will have practical significance in cost-effective widening of existing highway and railway embankments.
Laboratory Studies on the Volume Change Characteristics of Kaolinite Contaminated with Sodium Phosphate/Sulfate
Authors: Rao Sudhakar M. , Reddy P. Mohan Rami
Published: July 2014

Reported distress to an industrial structure from phosphate/sulfate contamination of kaolinitic foundation soil at an industrial location in Southern India prompted this laboratory study. The study examines the short-term effect of sodium sulfate/phosphate contamination on the swell/compression characteristics of a commercial kaolinite. Experimental results showed that the unsaturated contaminated kaolinite specimens exhibited slightly higher swell potentials and lower compressions than the unsaturated uncontaminated kaolinite specimens. It is suggested that the larger double layer promoted by the increased exchangeable sodium ion concentration is responsible for the slightly higher swell potentials and lower compressions of the unsaturated contaminated kaolinite specimens.
Improving Fruit Set, Yield and Fruit Quality of Date Palm (Phoenix dactylifera, L. cv. Mnifi) Through Bunch Spray With Boron and Zinc
Authors: Omar Alaa El-Din K. , Ahmed M. A. , Al-Obeed R. S.
Published: July 2014

Fertilization is one of the most important cultural practices in date palm orchards. Spraying micro-nutrients has an important role in fruit set, fruit retention, development, improved total yield, and fruit characteristics. The present study was conducted during the two successive seasons, 2011 and 2012, in order to investigate the effect of bunches sprayed with boron and/or zinc on fruit set, yield, and fruit quality of 10-year-old “Mnifi” date palm. Bunches were pollinated by placing 10 “Meghal” fresh male strands among female clusters during both seasons. Nine spraying treatments were performed twice; 2 h before pollination and 4 weeks after pollination. Results of the two seasons indicated that application of 1500 ppm boron +300 ppm zinc (B1 + Zn1) increased total yield/palm, fruit weight and volume, flesh weight, soluble solids content (SSC), and total and reducing sugars. Fruit set and titratable acidity were improved with spraying of 1500 ppm boron (B1). Fruit dimensions and moisture content increased with B1 treatment in the first season and B1 + Zn1 treatment in the second season. Application of boric acid alone (1500 ppm) or combined with zinc sulphate (300 ppm) to get a positive effect on fruit set, total yield, and fruit quality of “Mnifi” date palm could be recommended.
Anatomically Based Approach for Endovascular Treatment of Vertebro-Vertebral Arteriovenous Fistula
Authors: Yeh Chih-Hua , Chen Yao-Liang , Wu Yi-Ming , Huang Yu-Chieh , Wong Ho-Fai
Published: July 2014

Vertebro-vertebral arteriovenous fistula (VV-AVF) is a rare vascular disorder with an abnormal high-flow shunt between the extracranial vertebral artery (VA), its muscular or radicular branches and an adjacent vein. To date, there are no guidelines on the best treatment for VV-AVF. We present our experience of VV-AVF treatment with covered stents in three patients and detachable coils in two patients. One patient with fistula at the V3 segment had rapid fistula recurrence one week after covered stent treatment. The possible causes of failed treatment in this patient are discussed. The currently available treatment modalities for VV-AVF are also summarized after a literature review. At the end of this article, we propose a new concept of anatomically based approach for endovascular treatment of VV-AVF. Fistula in the V1-2 segments of vertebral artery could be treated safely and effectively by covered stent with the benefit of preserving VA patency. Embolization with variable embolizers should be considered first for fistula in the V3 segment because of the tortuous course and flexibility of the VA in this segment.
Characterization of human spermatogonial stem cell markers in fetal, pediatric, and adult testicular tissues
Authors: Altman Eran , Yango Pamela , Moustafa Radwa , Smith James F , Klatsky Peter C , Tran Nam D
Published: July 2014

Autologous spermatogonial stem cell (SSC) transplantation is a potential therapeutic modality for patients with azoospermia following cancer treatment. For this promise to be realized, definitive membrane markers of prepubertal and adult human SSCs must be characterized in order to permit SSC isolation and subsequent expansion. This study further characterizes the markers of male gonocytes, prespermatogonia, and SSCs in humans. Human fetal, prepubertal, and adult testicular tissues were analyzed by confocal microscopy, fluorescence-activated cell sorting, and qRT-PCR for the expression of unique germ cell membrane markers. During male fetal development, THY1 and KIT (C-Kit) are transient markers of gonocytes but not in prespermatogonia and post-natal SSCs. Although KIT expression is detected in gonocytes, THY1 expression is also detected in the somatic component of the fetal testes in addition to gonocytes. In the third trimester of gestation, THY1 expression shifts exclusively to the somatic cells of the testes where it continues to be detected only in the somatic cells postnatally. In contrast, SSEA4 expression was only detected in the gonocytes, prespermatogonia, SSCs, and Sertoli cells of the fetal and prepubertal testes. After puberty, SSEA4 expression can only be detected in primitive spermatogonia. Thus, although THY1 and KIT are transient markers of gonocytes, SSEA4 is the only common membrane marker of gonocytes, prespermatogonia, and SSCs from fetal through adult human development. This finding is essential for the isolation of prepubertal and adult SSCs, which may someday permit fertility preservation and reversal of azoospermia following cancer treatment.
Hydrogenated amorphous silicon germanium by Hot Wire CVD as an alternative for microcrystalline silicon in tandem and triple junction solar cells
Authors: Veldhuizen L.W. , Kuang Y. , Bakker N.J. , van der Werf C.H.M. , Yun S.-J. , Schropp R.E.I.
Published: July 2014

We study hydrogenated amorphous silicon germanium (a-SiGe:H) deposited by HWCVD for the use as low band gap absorber in multijunction junction solar cells. We deposited layers with Tauc optical band gaps of 1.21 to 1.56 eV and studied the hydrogen bonding with FTIR for layers that were deposited at several reaction pressures. For our reaction conditions, we found an optimal reaction pressure of 38 µbar. The material that is obtained under these conditions does not meet all device quality requirements for a-SiGe:H, which is, as we hypothesize, caused by the presence of He that is used to dilute the GeH4 source gas. We present an initial single junction n-i-p solar cell with a Tauc optical band gap of 1.45 eV and a short circuit current density of 18.7 mA/cm2.
Theoretical Methodology for Studying Oxygen Reduction Reaction (ORR) on Disordered Binary Alloy Surfaces
Authors: Lopez-Chavez Ernesto , García-Quiroz Alberto , González-García Gerardo , Islas-Gómez Juana Laura , Díaz-Góngora José A. I. , Cesar de la Portilla-Maldonado L. , Castillo-Alvarado F.L
Published: July 2014

The catalytic activity of disordered binary alloy metal surfaces is investigated for the oxygen reduction reaction (ORR) by generating free energy diagrams and performing calculations on d-band centers of alloys. The disorder was simulated using virtual crystal approximation; then, based on periodic, self-consistent density functional theory (DFT) methods, we calculated adsorption energies of reaction intermediates. Alternative pathway for ORR mechanism, involving proton/electron transfer to adsorbed oxygen and hydroxyl, is considered. The methodology was applied to (111) surface of PdxCu1-x disordered binary alloys, with different values of x concentration. This study found that at the ORR equilibrium potential of 1.23 V, the reactivity of all surfaces is shown to be limited by the rate of OH removal from the surface. Among the surfaces studied, the surface of Pd0.80Cu0.20 shows the highest reactivity and is more active than other non-Pt alloys. These results are in excellent agreement with earlier experimental and theoretical work.
Study of Fractal Dimension and Porosity of Li2TiO3 Used as a Battery
Authors: Nava-Dino C.G. , Cordero-De Los Rios P.I , Acosta-Chávez R.A. , Mendez-Mariscal N.L. , Mendoza-Negrete J.E. , Chacón-Nava J.G. , Martínez-Villafañe A.
Published: July 2014

Lithium ion batteries are becoming more important because of their high energy density and design flexibility. The capacity of these batteries is usually cathode limited; so, it follows that increasing the capacity of the cathode is essential to raise the performance of such batteries. In this work, fractal dimension study is used to understand the behavior of a Li2TiO3 made by mechanical milling, as a way to improve their uses in energy storage. Digital image analysis allows the study of fractal dimension; X-ray, Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) analysis were used to analyze changes on the surface of samples from the current results the distinctive characteristics of the surfaces for each sample may be obtained, making it possible to predict a future behavior of the samples. MATLAB software FRACLAB 2.03 developed by INRIA was used as a tool.
Thermal neutron detection enhancement by 10B implantation in silicon carbide sensor
Authors: Vervisch Vanessa , Issa Fatima , Biondo Stéphane , Ottaviani Laurent , Vervisch Wilfried , Szalkai Dora , Vermeeren Ludo , Klix Axel , Hallen Anders , Kuznetsov Andrej , Lazar Mihai , Lyoussi Abdallah
Published: July 2014

The purpose of this paper is to propose the enhancement of device detectors based on p-n junction in 4H-SiC for nuclear instrumentation. Particular emphasis is placed on the interest on using Boron isotope 10 as a Neutron Converter Layer in order to detect thermal neutrons. Here, we present the main results obtained during several irradiation tests performed in the Belgian Reactor 1 (BR1). We show the capability of our detectors by means of first results of the detector response at different reverse voltage biases and at different reactor power.
High Performance ITO Nanoparticles as Nanoink for Printing as a Substitute Process of Sputtering
Authors: Muramatsu Atsushi , Kanie Kiyoshi , Sasaki Takafumi , Nakaya Masafumi
Published: July 2014

Generally, indium-tin-oxides (ITO) thin film is prepared by the sputtering process with ITO target, but only 20% of ITO yielded from the target is deposited on the substrate. Namely, about 80% ITO is exhausted by the deposition elsewhere far from the substrate. The recycling process is limited so that ca 20% ITO of the starting target is lost without any recovery. Even if the recycling of ITO has been carried out in this process, we should prepare ITO target of 5 times more than apparent use of ITO on film. If we change it to printing process from the sputtering, the reduction in ITO use is expected as ca. 50%, considering the increase in film thickness by printing. Our target technology also includes ITO nanoink for the project. As a result, monodispersed ITO nanoparticles (NPs) with a cubic shape were fabricated by using quaternary ammonium hydroxide-assisted metal hydroxide organogels. These NPs have perfect uniformity in size with beautiful shape, and perfect single crystalline structure including Sn. As we were attempted to make thin film with ITO nanoink, it was successfully fabricated below 200 nm in thickness and the resistivity was drastically decreased below 1.0 x 10-3Ω cm after heat treatments. GZO nanoink as substitute of ITO has also been developed.
Relationship of the nanocrystal morphology and atomistic structure with respect to the superstructure ordering within PbS- and Gold-Mesocrystals
Authors: Bahrig Lydia , Haubold Danny , Röder Falk , Hickey Stephen G. , Eychmüller Alexander
Published: July 2014

The relationship between nanoparticle geometry and their two dimensional assembly is investigated in order to provide insights into the three dimensional arrangement of mesocrystals. The crystal structure of the nanoparticles and their homogeneity are investigated during structure formation on the mesoscale whereby effects such as fibrillation have been observed.
SCC growth rate measurements and surface oxide film characterization on high SFE austenitic stainless steels in a simulated BWR water environment
Authors: Ooki S. , Yonezawa T. , Watanabe M. , Kokawa H.
Published: July 2014

Stress Corrosion Cracking (SCC) has been detected in Boiling Water Reactors (BWRs) on core shrouds and primary water re-circulation piping made of low carbon stainless steels. Material hardening strongly affects SCC propagation behavior, and SCC growth rates increase with increasing hardness of austenitic stainless steels caused by cold work or neutron irradiation.

Research work has been conducted in the authors’ laboratories with the aim of improving SCC resistance using chemical composition control of stainless steels. It has been previously reported that high stacking fault energy (SFE) materials showed better SCC resistance than low SFE materials due to hardening being suppressed in high SFE materials. In the present study, SCC growth rate (CGR) tests were performed using 15% cold worked Types 316L and 25Cr-20Ni stainless steels in a simulated BWR water environment. The 25Cr-20Ni stainless steel used has high SFE value due to chemical composition control and measured SCC growth rates were lower than those of low SFE stainless steels.

However, oxidation behavior is one of the more important factors influencing SCC of austenitic stainless steels in addition to material hardening behavior, and the influence of the chemical composition control necessary to increase SFE on oxidation behavior in BWR primary coolants is still unclear. In this study, therefore, immersion tests using Types 316L and 25Cr-20Ni stainless steel specimens were also conducted in the simulated BWR water environment. The surface oxide films on the specimens were then analyzed with micro-Raman spectroscopy and glow discharge optical emission spectroscopy in order to help clarify the oxidation behavior.

The results of these tests and analyses showed that the NiFe2O4 content of the outer oxide layers on the high SFE stainless steels was higher than that on the low SFE stainless steels. The inner oxide film on the 25Cr-20Ni stainless steel also had a high chromium content.

Based on the above results, SCC resistance and oxidation behavior of high SFE austenitic stainless steels in a simulated BWR water environment will be discussed.
Evolution of the concept of dystonia
Authors: Camargo Carlos Henrique F. , Teive Hélio Afonso G.
Published: July 2014

The term dystonia was proposed by Hermann Oppenheim in 1911, but reports of cervical dystonia are finding since the Roman Empire. The differentiation of the dystonia between a neurological and a psychiatric disease turned a lot. Sometimes was proposed, further, the exclusion of the dystonia as a different phenomenon among the movement disorders. The hypothesis of emotional etiology of the dystonias increase in the decade of 1960 and the conclusion of the etiology of dystonia only happened in the decades of 1970 and 1980 with a series of works of Charles David Marsden. These researches defined dystonia as a movement disorder caused by lesion in the basal ganglia. In February of 1984, a committee of members of Scientific Advisory Board of the Dystonia Medical Research Foundation developed the definition for dystonia accepts until 2013 when an international committee developed the new concept.
Jean-Baptiste Charcot, the French Antarctic expedition and scurvy
Authors: Teive Hélio Afonso Ghizoni , Germiniani Francisco Manoel Branco , Munhoz Renato Puppi
Published: July 2014

During the second expedition to the South Pole, Commander Jean-Baptiste Charcot and some members of the crew of “Pourquoi Pas?” developed symptoms suggestive of scurvy. The clinical picture was totally reversed after dietary changes.
Neurological complications after H1N1 influenza vaccination: magnetic resonance imaging findings
Authors: Lessa Ronaldo , Castillo Maurício , Azevedo Renata , Azevedo Fernanda , Azevedo Hildo
Published: July 2014

Objective: To report 4 different neurological complications of H1N1 virus vaccination. Method: Four patients (9, 16, 37 and 69 years of age) had neurological symptoms (intracranial hypertension, ataxia, left peripheral facial palsy of abrupt onset, altered mental status, myelitis) starting 4-15 days after H1N1 vaccination. MRI was obtained during the acute period. Results: One patient with high T2 signal in the cerebellum interpreted as acute cerebellitis; another, with left facial palsy, showed contrast enhancement within both internal auditory canals was present, however it was more important in the right side; one patient showed gyriform hyperintensities on FLAIR with sulcal effacement in the right fronto-parietal region; and the last one showed findings compatible with thoracic myelitis. Conclusion: H1N1 vaccination can result in important neurological complications probably secondary to post-vaccination inflammation. MRI detected abnormalities in all patients.
Coping strategies and mood profiles in patients with multiple sclerosis
Authors: Milanlioglu Aysel , Özdemir Pinar Güzel , Cilingir Vedat , Gülec Tezay Çakin , Aydin Mehmet Nuri , Tombul Temel
Published: July 2014

Objective: The aim of the present study was to investigate the coping strategies, mood characteristics and the association between these aspects in patients diagnosed with multiple sclerosis and healthy subjects. Method: Fifty consecutive patients who were diagnosed with multiple sclerosis according to McDonald criteria and thirty-one healthy subjects were included in the study. In addition to the sociodemographic form, Expanded Disability Status Scale (EDSS), Coping Orientation for Problem Experiences Scale (COPE), and Profile of Mood States (POMS) tests were applied to the participants. Results: Non-functional coping strategies were significantly higher in the secondary-progressive type (p≤0.05). Depression-dejection, fatigue-inertia and total POMS scores were significantly higher in the secondary-progressive type (p≤0.05). Conclusion: The results of our study demonstrate the importance of rehabilitation programs that encourage exercise among patients with multiple sclerosis to increase vigor-activity levels.
Exploración de las ideas de Winnicott sobre la adolescencia y el conflicto de generaciones
Authors: Klein Alejandro
Published: July 2014

En este trabajo se busca establecer algunas contribuciones de Winnicott em relación al conflicto de generaciones, la adolescencia y la educación. El concepto de conflicto de generaciones es un eje fundamental para pensar la adolescencia y su relación con el mundo adulto. Destacamos especialmente ideas de Winnicott en relación a la educación, con una perspectiva crítica de la perspectiva de adaptación, tema este que está de acuerdo con su concepto de crecimiento, agresión al servicio de la pulsión de vida y el self verdadero.
Recasamento: percepções e vivências dos filhos do primeiro casamento
Authors: Valentim de Sousa Daniela Heitzmann Amaral , Dias Cristina Maria de Souza Brito
Published: July 2014

Esta pesquisa teve como objetivo compreender as percepções e as vivências de filhos diante das mudanças ocorridas em suas vidas, no âmbito da convivência familiar, devido ao recasamento de um ou de ambos os pais. É uma pesquisa qualitativa cujos participantes são quatro adultos jovens. Eles responderam a uma entrevista analisada de acordo com a Análise de Conteúdo Temática. Pode-se concluir que, apesar das dificuldades iniciais devido às alterações na estrutura física, na rotina e na dinâmica da casa, com a introdução de novos personagens (padrasto/madrasta, meio-irmãos e irmãos socioafetivos), eles relataram mais aspectos positivos do que negativos nessa configuração, exceto um caso em que a participante apresenta dificuldades na relação com a madrasta.
As éticas nas práticas de atenção psicológica na assistência social
Authors: Benelli Silvio José
Published: July 2014

Parte-se de diferentes modalidades de ética - da tutela, da interlocução, da ação social, do cuidado e da escuta do sujeito do desejo inconsciente -, como analisadores das práticas de atenção realizadas pelos psicólogos no âmbito da Assistência Social. Numa abordagem institucional, apresentam-se, de modo problematizador, casos, encontrados na literatura, considerados exemplares das práticas desenvolvidas por psicólogos e também por outros trabalhadores que atuam em estabelecimentos assistenciais os mais diversos. Conclui-se que os psicólogos podem encontrar, na psicanálise do campo de Freud e de Lacan, consistentes instrumentais teórico-técnicos e ético-políticos para orientar de modo efetivo e avisado uma atuação institucional que inclua o indivíduo como cidadão e também como sujeito do inconsciente.
Os valores e o valor da moeda: hipóteses sobre a comensurabilidade e a monetarização do impacto de projetos sociais
Authors: Cabral Eloisa Helena de Souza , Muzy Paulo de Tarso
Published: July 2014

A experiência de monetarização de impacto de projetos desenvolvidos por organizações de interesse público ou por programas de responsabilidade social empresarial requer metodologia avaliativa que contemple os resultados expressos como fatos - ou mudanças imediatamente quantificáveis na vida das pessoas - e resultados expressos como valores - ou percepções de princípios e normas, comunicados ao longo dos projetos. O objetivo deste artigo é apresentar e discutir as hipóteses necessárias para a apropriação comensurável dos aspectos valorativos e factuais, considerando os significados sociais da moeda identificados nos circuitos de troca dos bens públicos envolvidos. A abordagem, que tem por referencial teórico as contribuições de H. Putnam e A. Sem. vale-se do diálogo com a sociologia econômica para construir indicadores mensuráveis do impacto. Como resultado, a monetarização explora o significado do impacto para a organização, em termos de custos e benefícios sociais; para os doadores, como medidas da responsabilidade social e valor agregado; e, para os beneficiários, como quantificação da mudança na percepção de valores e de atitudes. Como método para essa discussão, aplicamos esses argumentos à avaliação de um projeto social local, desenvolvido em Belo Horizonte-MG, mostrando que os valores podem ser incorporados como elementos mensuráveis e apropriados para a representação econômica do impacto.
Para além da dupla consciência: Gestão Social e as antessalas epistemológicas
Authors: Justen Carlos Eduardo , Moretto Neto Luís , Garrido Paulo Otolini
Published: July 2014

A partir da noção de dupla consciência, observada na obra The souls of black folk (1903), de W. E. B. Du Bois e utilizada como metarreferência discursiva, este artigo, como ensaio teórico, objetiva estabelecer uma reflexão epistemológica que contribua para que a Gestão Social não recaia na patologia da dupla consciência - uma gestão, na forma de ação social, que se credita normativamente emancipatória, mas que representa na materialidade da vida, de modo contraditório, a continuidade de uma realidade social opressora. Para tanto, após a identificação do sentido axiológico atribuído à Gestão Social e o apontamento das principais dificuldades, limitações e críticas mapeadas na literatura especializada, foram trazidas à baila duas temáticas pouco exploradas no âmbito da Gestão Social - relações de poder, consubstanciadas no conceito de colonialidade de poder, e a relação homem/natureza, delineada pelo aspecto da ecologia - a fim de demonstrar que tal gestão, uma gestão-problema, não uma gestão-resposta, deve desenvolver a capacidade de se autoproblematizar, de sentir-se como um problema e de refletir acerca de suas próprias questões não explicitadas. Ao final, após a exposição de um conjunto de caracteres epistemológicos, demonstrou-se que a Gestão Social, para não padecer das lacunas epistemológicas observadas na Gestão Estratégica, rompendo com a tendência de constituir uma antessala epistemológica, ao filtrar seletivamente as realidades observáveis e significativas e, dessa feita, mantendo a coesão social propiciada pela ideologia da gestão hegemônica, ela deve constituir a possibilidade plural de outras gestões, a partir de saberes e prática situados.
Dimensões lineares da folha e seu uso na determinação do perfil vertical foliar de gladíolo
Authors: Schwab Natalia Teixeira , Streck Nereu Augusto , Rehbein Amanda , Ribeiro Bruna San Martin Rolim , Ulhmann Lilian Osmari , Langner Josana Andréa , Becker Camila Coelho
Published: July 2014

O gladíolo, importante flor de corte, é uma planta herbácea e suas folhas apresentam formato de lança. Os objetivos do trabalho foram determinar um modelo matemático empírico que melhor estima a área da folha do gladíolo a partir de dimensões lineares e aplicar o modelo matemático para determinar o perfil vertical da área das folhas de diferentes posições na planta. Para isso foi realizado um experimento de campo em Santa Maria com quatro cultivares de gladíolo (Peter Pears, Rose Friendship, Jester e Amsterdã), sendo coletadas 50 folhas de cada cultivar, das quais mensuraram-se o comprimento (C) e a maior largura (L). Em seguida, fotocopiou-se cada folha em um scanner, calculando-se a área individual (AF) com auxílio de um software. A relação entre área e as dimensões das folhas foi ajustada no modelo potência e a capacidade preditiva das equações foi avaliada por várias estatísticas. Resultados indicam que o modelo AF = a (C.L) é o mais indicado para a estimativa da área foliar em gladíolo, podendo-se utilizar a = 0,644 para as quatro cultivares testadas. As menores folhas estão nas posições basais e apicais e as maiores, na posição intermediária da planta.
Index selection of tropical maize genotypes for nitrogen use efficiency
Authors: Granato Ítalo Stefanine Correia , Bermudez Felipe Pereira , Reis Gabriel Gonçalves dos , Dovale Julio César , Miranda Glauco Vieira , Fritsche-Neto Roberto
Published: July 2014

Nitrogen (N) limitation in maize crops is related to the fact that the efficiency of nitrogen fertilization in maize does not exceed 50%, primarily due to volatilization, denitrification and soil leaching. Therefore, the development of new nitrogen use efficient (NUE) cultivars is necessary. The aim of the present study was to develop indices for the accurate selection of NUE maize genotypes for use in conditions of both high and low N availability. The experiment was conducted in a greenhouse (20º45'14"S; 42º52'53"W) at the Federal University of Viçosa during October 2010. A total of 39 experimental hybrid combinations and 14 maize lines differing in NUE were evaluated under two N availability conditions. We determined the relative importance of the studied characters using principal component analysis, factor analysis and by developing efficient selection indices. We conclude that indirect and early selection of tropical maize genotypes can be performed using the indices I HN = 0.022 SDM + 0.35 RSDM + 0.35 RL A + 0.35 NUE for high N availability environments and I LN = -0.06 RSDM + 0.35 RSA A + 0.35 RL A + 0.39 SDM for low N availability environments.
Herança da resistência do acesso de melancia PI 595201 a isolado de PRSV-W do Estado do Tocantins
Authors: Alves Anatércia Ferreira , Nascimento Ildon Rodrigues do , Ticona-Benavente César Augusto , Faria Marcos Ventura , Sarmento Renato de Almeida , Figueira Antônia dos Reis , Maluf Wilson Roberto
Published: July 2014

Com o objetivo de identificar o tipo de herança, o número de genes e os parâmetros genéticos e fenotípicos da resistência do acesso PI 595201 a um isolado de PRSV-W da região Norte do Brasil foi conduzido um experimento na área experimental do Departamento de Produção Vegetal da Universidade Federal do Tocantins, em condições de casa de vegetação. A partir do cruzamento entre a cultivar suscetível Crimson Sweet (P1) e o acesso resistente PI 595201 (P2) foi obtida a geração F1 e as gerações segregantes, cujas plantas foram inoculadas e avaliadas quanto à resistência com base nos sintomas nas folhas. Foram avaliadas 48, 48, 80, 200, 100 e 100 plantas das gerações P1, P2, F1, F2, RC11 e RC12, respectivamente, em delineamento inteiramente casualizado com quatro repetições. A partir da análise de componentes de médias no controle da resistência determinaram-se dois genes, predominando os efeitos gênicos aditivos, seguido de efeitos de dominância incompleta no sentido de aumentar a resistência. As herdabilidades para a resistência, no sentido amplo e restrito, foram de 0,48 e 0,38, respectivamente.
Irrigation and fertigation frequencies with nitrogen in the watermelon culture
Authors: Fernandes Carlos Newdmar Vieira , Azevedo Benito Moreira de , Nascimento Neto Joaquim Raimundo , Viana Thales Vinícius de Araújo , Sousa Geocleber Gomes de
Published: July 2014

This study evaluates the influence of different irrigation frequencies and different nitrogen fertigation frequencies on the growth performance of the watermelon (Citrullus lanatus) culture. Two experiments were conducted at the Paraguay farm in the Cruz municipality, Ceará, Brazil. They was randomized blocks design with six treatments and four replications. The irrigation frequency experiment consisted of the application of different irrigation frequencies. The treatments were: DM - daily irrigation in the morning with 100% daily dosage; DT - daily irrigation in the afternoon, with 100% daily dosage; DMT - twice daily irrigation, with 50% daily dosage in the morning and 50% daily dosage in the afternoon; 2D - irrigation every two days; 3D - irrigation every three days and 4D - irrigation every four days. To the experiment with different nitrogen fertigation frequencies, the treatments used were: 2F - 2 fertigations in a cycle; 4F - 4 fertigations in a cycle; 8F - 8 fertigations in a cycle; 16F - 16 fertigations in a cycle; 32F - 32 fertigations in a cycle and 64F - 64 fertigations in a cycle. We evaluated the marketable yield (PC), fruit weight (M), polar diameter (DP), equatorial diameter (DE), shell thickness (EC) and soluble solids (SS). The irrigation frequency treatments influenced all variables significantly, with twice daily irrigation (DMT, 50% in the morning and the 50% in the afternoon) promoting the highest productivity (69.79 t ha-1). The different frequencies of fertigation also significantly influenced all variables, except for the shell thickness, the highest yield (80.69 t ha-1) being obtained with treatment 64 fertigations in a cycle.
Prevalence and potential factors associated with probable sleep or awake bruxism and dentin hypersensitivity in undergraduate students
Authors: DANTAS-NETA Neusa Barros , LAURENTINO Joseany Barbosa , SOUZA Carlos Henrique de Carvalho e , NUNES-DOS-SANTOS Danila Lorena , MENDES Regina Ferraz , PRADO-JÚNIOR Raimundo Rosendo
Published: July 2014

OBJECTIVE: To measure the prevalence of probable sleep or awake bruxism and cervical dentin hypersensitivity of undergraduate students and to determine the symptoms associated with these conditions.METHODOLOGY: This was a cross-sectional study. A diagnosis of probable bruxism was reached when students reported clenching or grinding of the teeth during sleep and/or wakefulness, and when they also presented some of the signs and symptoms of bruxism and masseter muscle pain on palpation. Cervical dentinal hypersensitivity was diagnosed by testing for sensitivity to pain in the cervical region of the teeth. Pain was triggered either by touch (using a #5 probe) or by an air jet spray. The sample consisted of 306 university students aged between 19 and 35 years old. The data were stored and analysed using SPSS software, version 15.0 for Windows.RESULT: The prevalence of probable bruxism was 34.3%, with no predominance regarding sex. Probable awake bruxism was more prevalent (61.9%), mostly occurring when the individual reported being in a state of mental concentration (63.1%). There was no association between probable sleep or awake bruxism and dentin hypersensitivity (p = 0.195). Individuals with probable sleep bruxism had increased odds of having muscular pain in the face upon waking (OR = 14.14, 95% CI 5.06-39.55), and those with probable awake bruxism had a increased odds of having facial muscle fatigue when chewing or talking for a long time (OR = 2.88, 95% CI 1.53-5.43) and muscular pain in the face upon waking (OR = 5.31, 95% CI 1.93-14.62).CONCLUSION: The prevalence of probable bruxism was 34.3% and that of HDC was 57.8%, with 22.2% of these subjects also showing probable bruxism. Individuals with probable bruxism tended to have a higher odds of facial pain when they awakened and when chewing or talking for long periods. There were no associations between probable sleep and awake bruxism and cervical dentin hypersensitivity.
Fracture resistance of weakened human premolar roots after use of a glass fiber post together with accessory posts
Authors: SEGATO Clarissa Estefani , AMARAL Flávia Lucisano Botelho do , FRANÇA Fabiana Mantovani Gomes , FLÓRIO Flávia Martão , BASTING Roberta Tarkany
Published: July 2014

OBJECTIVE: To evaluate the fracture strength of human premolar teeth with wide root canals, restored with glass fiber posts and resin cement, together with different numbers of accessory posts.MATERIAL AND METHOD: Thirty-six premolars received standardized preparations that simulated weakened roots, and were divided into three groups (n=12): G0 - glass fiber post (Reforpost/Angelus) cementation with dual cure resin cement (Rely X ARC/3M ESPE); G1 - glass fiber post cementation and one accessory post (Reforpin/Angelus), with dual cure resin cement; G2 - glass fiber post cementation and two accessory posts, with dual cure resin cement. Resin composite cores were placed in each tooth. A metal coping was placed in a standardized position on the cores to perform the compressive tests using a test machine. Testing was performed applying a force parallel to the long axis of the teeth at a speed of 0.5 mm/min. Fracture mode was analyzed under a stereoscopic loupe, classified by scores.RESULT: the Analysis of Variance (ANOVA) was applied, and there was no statistical difference in the mean values of fracture strength among the groups (in kgf): G0 = 91.1 ± 56.9; G1 = 104.7 ± 66.6; G2 = 106.1 ± 51.9. Greater frequency of fracture or cracks was observed in the cervical one-third of the root in the teeth without cemented accessory posts, but no statistical difference was observed among the fracture modes.CONCLUSION: The number of accessory posts cemented into debilitated roots had no influence on either fracture strength or type of fracture of pre-molar roots.
Tendências de temperaturas mínimas e máximas do ar no Estado de Minas Gerais
Authors: Ávila Léo Fernandes , Mello Carlos Rogério de , Yanagi Silvia de Nazaré Monteiro , Sacramento Neto Olívio Bahia
Published: July 2014

O objetivo deste trabalho foi avaliar tendências das temperaturas mínimas e máximas no Estado de Minas Gerais. Foram avaliados dados de 43 municípios, tendo-se considerado as escalas anual e sazonal - janeiro, abril, julho e outubro, que representam os meses centrais de verão, outono, inverno e primavera, respectivamente. Séries históricas de temperaturas mínimas e máximas do ar diárias, com extensão mínima de 30 anos, foram analisadas com base no teste de Mann-Kendall e no uso de regressão linear simples. As tendências foram consideradas significativas somente quando ambas as avaliações foram significativas; neste caso, determinaram-se as taxas de alteração das temperaturas. Houve boa concordância entre os testes de significância para a detecção de tendências nas séries históricas, na maioria dos municípios. Observou-se tendência de elevação das temperaturas mínimas em julho de até 1,5ºC por década, com tendências generalizadas de aumento na maior parte do estado, em outubro e janeiro, e também na escala anual. Exceções foram verificadas especialmente em municípios de maiores altitudes, em que as temperaturas mínimas diminuíram no inverno. Há predominância de municípios com tendência significativa de aumento de temperaturas, independentemente da escala de avaliação. Tendências de aumento nas temperaturas são esperadas mais comumente no sentido sul-norte do Estado de Minas Gerais.
Effect of neighborhood and plot size on experiments with multiple-harvest oleraceous crops
Authors: Santos Daniel , Lúcio Alessandro Dal'Col , Cargnelutti Filho Alberto , Storck Lindolfo , Lorentz Leandro Homrich , Schabarum Denison Esequiel
Published: July 2014

The objective of this work was to determine the efficiency of the Papadakis method on the quality evaluation of experiments with multiple-harvest oleraceous crops, and on the estimate of the covariate and the ideal plot size. Data from nine uniformity trials (five with bean pod, two with zucchini, and two with sweet pepper) and from one experiment with treatments (with sweet pepper) were used. Through the uniformity trials, the best way to calculate the covariate was defined and the optimal plot size was calculated. In the experiment with treatments, analyses of variance and covariance were performed, in which the covariate was calculated by the Papadakis method, and experimental precision was evaluated based on four statistics. The use of analysis of covariance with the covariate obtained by the Papadakis method increases the quality of experiments with multiple-harvest oleraceous crops and allows the use of smaller plot sizes. The best covariate is the one that considers a neighboring plot of each side of the reference plot.
Produtividade de grãos e componentes de produção da canola de acordo com fontes e doses de nitrogênio
Authors: Kaefer João Edson , Guimarães Vandeir Francisco , Richart Alfredo , Tomm Gilberto Omar , Müller Alexandre Luís
Published: July 2014

O objetivo deste trabalho foi avaliar a resposta da canola a fontes e doses de nitrogênio aplicadas na semeadura. O experimento foi conduzido em Latossolo Vermelho distroférrico típico, com textura muito argilosa. Utilizou-se delineamento experimental de blocos ao acaso, em arranjo fatorial 7x2, com sete doses de N em superfície na semeadura (0, 20, 40, 60, 80, 100 e 120 kg ha-1), duas fontes de N (sulfato de amônio e ureia) e quatro repetições. O experimento foi realizado com o híbrido Hyola 61, por dois anos, e foram avaliadas as seguintes variáveis: altura de planta, número de plantas por metro quadrado, massa de matéria seca da parte aérea, massa de síliquas por planta, massa de mil grãos, produtividade de grãos, e teores de proteína e de óleo nos grãos. As variáveis não foram influenciadas pelas fontes de N. A maior produtividade de grãos é alcançada com 88 kg ha-1 de N. Doses crescentes de N aumentam os teores de proteína e diminuem os de óleo nos grãos de canola.
Inheritance of seed coat color in sesame
Authors: Laurentin Hernán , Benítez Tonis
Published: July 2014

The objective of this work was to determine the inheritance mode of seed coat color in sesame. Two crosses and their reciprocals were performed: UCLA37 x UCV3 and UCLA90 x UCV3, of which UCLA37 and UCLA90 are white seed, and UCV3 is brown seed. Results of reciprocal crosses within each cross were identical: F1 seeds had the same phenotype as the maternal parent, and F2 resulted in the phenotype brown color. These results are consistent only with the model in which the maternal effect is the responsible for this trait. This model was validated by recording the seed coat color of 100 F2 plants (F3 seeds) from each cross with its reciprocal, in which the 3:1 expected ratio for plants producing brown and white seeds was tested with the chi-square test. Sesame seed color is determined by the maternal genotype. Proposed names for the alleles participating in sesame seed coat color are: Sc1, for brown color; and Sc2, for white color; Sc1 is dominant over Sc2.
Free-living ixodid ticks in an urban Atlantic Forest fragment, state of Rio de Janeiro, Brazil
Authors: Pinheiro Michele da Costa , Lourenço Elizabete Captivo , Patrício Priscilla Maria Peixoto , Sá-Hungaro Iwine Joyce Barbosa de , Famadas Kátia Maria
Published: July 2014

As a consequence of the importance of ticks in forests in protected areas, was conducted survey of species of free-living ticks in the Natural Park Municipal Curió, state of Rio de Janeiro, Brazil. Monthly samples were taken by dragging method, dry ice traps and visual search in two transects. Adults and nymphs of Amblyomma cajennense (n= 147), Amblyomma brasiliense (n= 4) and Amblyomma parvum (n= 1) were collected. This is the first occurrence of A. parvum in the state. No correlation was found between the abundance of stages of A. cajennense and rainfall, temperature and relative humidity. The highest abundances of adults were in the months of January and May, and nymphs in September and October. The low diversity of parasites on Curió Park can be attributed to the proximity of households with pets, which would also explain the higher abundance of A. cajennense that is commonly found in areas impacted by anthropogenic pressure.
Rhipicephalus sanguineus sensu lato(Ixodidae) in synantropic rodents in Rio Grande do Sul, Brazil
Authors: Winkel Kathleen Tavares , Ribeiro Paulo Bretanha , Antunes Lidiane Oliveira , Cárcamo Marcial Corrêa , Vianna Élvia Elena Silveira
Published: July 2014

Rhipicephalus sanguineus, the brown dog tick, is responsible for maintaining and transmitting various pathogens, both in animals and human beings, and it is of great sanitary importance. This communication reports the first occurrence of Rhipicephalus sanguineus sensu lato parasitizing Rattus norvegicus in the state of Rio Grande do Sul, Brazil, and it is also the first record of this tick species parasitizing Rattus rattus in Brazil. The rodents were captured from the port area, located in the city of Pelotas, Rio Grande do Sul, Brazil. We collected 6 larvae of this tick species from 2 male R. rattus individuals, and 3 larvae from 2 female R. norvegicus individuals; parasitized specimens of both rodent species were captured from different sites within the experimental area. This record broadens the number of Rhipicephalus sanguineus sensu lato hosts in urban areas, indicating the need for continued monitoring on population density for both R. sanguineus and synanthropic rodents.