bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication of Micro-OLEDs by Room-temperature Curing Nanocontact-print Lithography Using DLC Molds
Authors: Ishikawa Ippei , Sakurai Keisuke , Kiyohara Shuji , Okuno Taisuke , Tanoue Hideto , Suda Yoshiyuki , Takikawa Hirofumi , Taguchi Yoshio , Sugiyama Yoshinari , Omata Yukiko , Kurashima Yuichi
Published: February 2013

The microfabrication technologiesfor organic light-emitting devices (OLEDs) are essential to the fabrication of the next generation of light-emitting devices. The micro-OLEDs fabricated by room-temperature curing nanoimprint lithography (RTC-NIL) using diamond molds have been investigated. However, light emissions from 10 μm-square-dot OLEDs fabricated by the RTC-NIL method have not been uniform. Therefore, we proposed the fabrication of micro-OLEDs by room-temperature curing nanocontact-print lithography (RTC-NCL) using the diamond-like carbon (DLC) mold. The DLC molds used in RTC-NCL were fabricated by an electron cyclotron resonance (ECR) oxygen ion shower with polysiloxane oxide mask in electron beam (EB) lithography technology. The mold patterns are square and rectangle dots which has 10 µm-width, 10 µm-width and50 µm-length, respectively. The height of the patterns is 500 nm. The DLC molds were used to form the insulating layer of polysiloxane in RTC-NCL. We carried out the RTC-NCL process using the DLC mold under the following optimum conditions: 0.1 MPa-pressure for coating DLC mold with polysiloxane film, 2.1 MPa-pressure for transferring polysiloxane from DLC mold pattern to indium tin oxide (ITO) glass substrate. We deposited N, N'-Diphenyl -N, N'-di (m-tolyl)benzidine (TPD) [40 nm-thickness] as hole transport layer / Tris(8-quinolinolato)aluminum (Alq3) [40 nm-thickness] as electron transport layer / Al [200 nm-thickness] as cathode on ITO glass substrateas anode in this order. We succeeded in formation of the insulating layer with square and rectangle dots which has 10 µm-width,10 µm-width and 50 µm-length, and operation of micro-OLEDs by RTC-NIL using DLC molds.
Decontamination Pilot Projects: Building a Knowledge Base for Fukushima Environmental Remediation
Authors: Miyahara Kaname , Tokizawa Takayuki , Nakayama Shinichi
Published: February 2013

After the Fukushima Dai-ichi nuclear accident, Japan Atomic Energy Agency (JAEA)was chosen by the Government to conduct decontamination pilotprojects at selected sitesin the contaminated area of Fukushima. Despite tight boundary conditions in terms of timescale and resources, the projectsprovide a good basis for developing recommendations on how to assure clean-up efficiency and worker safety and reduce time, cost, subsequent waste management and environmental impact. The results of the project can be summarised in terms of site characterisation and data interpretation, clean-up and waste minimisation and storage.
Substrate Temperature Effects of the ZnO:AlF3Transparent Conductive Oxide
Authors: Lin Tien-Chai , Huang Wen-Chang , Liu Chin-Hung , Chang Shang-Chou
Published: February 2013

Thermal effects on the crystal structure, electrical and optical characteristics of the Al and F co-doped ZnO films (ZnO:AlF3) are discussed in the paper. The ZnO:AlF3 thin films are prepared by RF sputtering with a constant power (ZnO/AlF3=100W/75W) toward the ZnO and AlF3 targets. The substrate temperature varied from room temperature to 250 °C with a step of 50 °C during thin film deposition. The crystalline quality of the ZnO:AlF3 film improved as the substrate temperature increased, with a corresponding increase in grain size. The improvement of the film quality leads to a higher electron mobility, with electron mobility of 0.85 cm2/V-s for the film deposited at the substrate temperature of 250 °C. The doping effect of fluorine in ZnO, and hence carrier concentration, was reduced at high temperature due to the vaporization of fluorine. This led to a reduction of carrier concentration with increase of temperature from 25 to 200°C. The corresponding resistivity increased from 3.60×10−2 to 6.0×10−2 Ω-cm. While for a further increase in substrate temperature, the doping of Al to the ZnO film was increased and resulted in an increase in carrier concentration.
Nanosized Thermosensors for Use in Explosions
Authors: Eilers Hergen , Myint Thandar , Gunawidjaja Ray , Horn Jillian , Lightstone James , Milby Christopher , Stamatis Demitrios
Published: February 2013

Nanophase Eu-doped Y2(CO3)3 and Eu-doped Zr(OH)4 are seeded into explosive fireballs to record the temperatures inside the fireball. The heat from the explosion decomposes the materials and converts them into Eu-doped Y2O3 and Eu-doped ZrO2, respectively. The optical signatures of these materials are compared with those of samples heated in a pyroprobe. By comparing the full-width half-max (FWHM) of the excitation peak of Eu-doped Y2(CO3)3 or comparing the ratio of two fluorescence peaks and the peak position of Eu-doped Zr(OH)4, we are able to deduce the temperatures inside the explosive fireball.
High Harmonic Surface Acoustic Wave Devices for Harsh Environment Sensor Applications
Authors: Justice J. , Elbaz M. , Rodak L. E. , Korakakis D.
Published: February 2013

Surface acoustic wave (SAW) devices are ideal candidates for gas sensors due to their small size, low cost of production and high sensitivity. Increasing restrictions on pollution and emissions create the necessity for sensors that can operate in the harsh environments found in vehicle exhaust systems and industrial production. Gallium nitride (GaN) is a robust, chemically inert, piezoelectric semiconductor, making it an attractive material for SAW devices designed to detect and monitor gases in harsh environments. In this work, SAW devices designed to operate at the 5th and 7th harmonics are fabricated on GaN thin films and their performance is measured through insertion loss, signal to noise ratio, operating frequency and quality factor. Devices are directly exposed to the exhaust gas of a common diesel engine. Device performance is then re-measured and compared. SAW devices fabricated in this work have measured operating frequencies above 1 GHz, and quality factors up to and higher than 2000, depending on the harmonic mode. SAW devices on GaN showed good chemical stability and measured changes in device performance after exhaust exposure was negligible.
ZnO/PVA Macroscopic Fibers Bearing Anisotropic Photonic Properties
Authors: Kinadjian Natacha , Achard Marie-France , Julian-Lopez Beatriz , Maugey Maryse , Poulin Philippe , Prouzet Eric , Backov Rénal
Published: February 2013

Composite PVA/ZnO-nanorods fibers, synthesized through co-axial flux extrusion exhibit higher anisotropic photonic properties, both in absorption and emission, as a result of the collective alignment of the ZnO nanorods along the main axis of the PVA fiber. This photonic anisotropy is triggered by a synergistic interaction between the PVA matrix, stretched above Tg, and cooled down under strain. Compared with non-elongated fibers that present an isotropic emission, composite fibers previously submitted to a tensile stress absorb selectively UV emission when the polarized laser beam is parallel to the main axis of the fiber. In addition, their photoluminescence is also anisotropic, with a waveguide behavior along the fiber’s main axis.
Microstructure Control of Nb-Si Based Alloys with Cr, W, Ta and Zr by Using Nb3Si Phase Stability Control
Authors: WANG Yuting , MIURA Seiji , YOSHINARI Akira
Published: February 2013

Recently, Nb-Si based alloys have attracted considerable attention as potential candidate materials for ultra-high temperature applications, because of their low densities and high melting points. However, it is still very difficult to obtain materials with a good balance of high-temperature strength and room-temperature toughness. To address this issue, microstructure control is considered to be a promising method. In applying microstructure control to Nb-Si based alloys with a eutectic reaction (L → Nbss+ Nb3Si) and a eutectoid reaction (Nb3Si → Nbss+ Nb5Si3), the key is the control of Nb3Si phase stability. Nbss(Nb solid solution) is considered as a ductile phase. In previous reports, it was revealed that different elements had different effects on the stability of Nb3Si. In particular, Mo and W (>3 at %) destabilize the Nb3Si phase, while Ti and Ta stabilize it, and Zr acts as an accelerator for decomposition of Nb3Si. On the other hand, Cr is known to enhance the formation of the ductile Nbssphase. In the present study, we investigated the effects of adding combinations of stabilizing, destabilizing, and accelerating elements with Cr, such as Cr and W, Cr and Ta, Cr and Zr. According to SEM observation, different microstructures were obtained with different combination of additives, and the fracture toughness at room temperature of these samples were also evaluated to reveal the effects of the microstructure on the mechanical properties of Nb-Si based alloys.
Micro-pillar Compression of Ni-base Superalloy Single Crystals
Authors: Arora Kabir , Kishida Kyosuke , Inui Haruyuki
Published: February 2013

Micro-compression behavior of single crystalline Ni-base superalloy CMSX-4 has been studied especially focusing on a specimen size range comparable to the size of Ni3Al (γ’) precipitates of about 500 nm using square cross-section micro-pillar specimens. The variation in stress levels exhibited a considerable increase for smaller micro-pillar specimens with edge lengths below 2 μm. Shearing of both the Ni (γ) channels and the γ’ precipitates was observed indicating that stress levels were significant enough to cause the dislocations to cut into the γ’ precipitates at room temperatures.
Glass-Iron-Clay interactions in a radioactive waste geological disposal: a multiscale approach
Authors: Rébiscoul Diane , Burger Emilien , Bruguier Florence , Godon Nicole , Chouchan Jean-Louis , Mestre Jean-Pierre , Frugier Pierre , Lartigue Jean-Eric , Gin Stephane
Published: February 2013

In France, nuclear glass canisters arising from spent fuel reprocessing are expected to be disposed in a deep geological repository using a multi-barrier concept (glass/canister/steel overpack and claystone). In this context, glass - iron or corrosion products interactions were investigated in a clayey environment to better understand the mechanisms and driving forces controlling the glass alteration. Integrated experiments involving glass - metallic iron or magnetite - clay stacks were run at laboratory scale in anoxic conditions for two years. The interfaces were characterized by a multiscale approach using SEM, TEM, EDX and STXM at the SLS Synchrotron. Characterization of glass alteration patterns on cross sections revealed various morphologies or microstructures and an increase of the glass alteration with the proximity between the glass and the source of iron (metallic iron or magnetite) due to the consumption of the silica coming from the glass alteration. In case of magnetite, the silica consumption is mainly driven by a sorption of silica onto the magnetite. For experiments containing metallic iron, the silica consumption seems to be strongly driven by silicates precipitation including Fe and Fe/Mg when the Fe is not enough available. Moreover, in addition to Fe-silicates observed at the surface of the gel layers, iron is incorporated within the gel probably as nanosized precipitates of Fe-silicates which could affect its physical and chemical properties. Those results highlighted the impact of the distance between glass and iron source and the nature of the iron source which drive the process consuming the silica coming from the glass alteration.
Technetium Incorporation into C14 and C15 Laves Intermetallic Phases
Authors: Buck Edgar C. , Schemer-Kohrn Alan L. , Wierschke Jonathan B.
Published: February 2013

Laves-type intermetallic phases have been observed to be the dominant phases in a series of alloy compositions being designed for the immobilization of technetium in a metallic waste form. The dominant metals in the alloy compositions were Fe-Mo and Fe-Mo-Zr. The alloy composition, Fe-Mo-Zr, also contained Pd, Zr, Cr, and Ni. Both non-radioactive rhenium-containing and radioactive technetium-bearing alloy compositions were investigated. In the Fe-Mo series, the phases observed were Fe2Mo (C14 Laves phase) and ferrite in agreement with predictions. Both Tc and Re resided predominantly in the Laves phases. In the Fe-Mo-Zr system, the phases included hexagonal C14 with the composition (Fe,Cr)2Mo, cubic C15 phase with a (Fe,Ni)2Zr composition, and the hcp phase Pd2Zr. The observation of these phases was in agreement with predictions. Re was found in the C14 intermetallic, (Fe,Cr)2Mo. Technetium was also observed to be partitioned preferentially into the (Fe,Cr)2Mo phase; however, this phase exhibited a cubic structure consistent with the C15 structural type. The composition of Laves phases is influenced by both the atomic size and electro-negativity of the constituent elements. The long-term release behavior of technetium under nuclear waste disposal conditions may be more dependent on the corrosion characteristics of these individual Laves phases containing Tc than the other metallic phases.
Thermodynamic modeling and experimental tests of irradiated graphite molten salt decontamination
Authors: Karlina Olga , Ojovan Michael , Pavlova Galina , Klimov Vsevolod
Published: February 2013

Molten salt flameless oxidation of graphite is one of the prospective methods of irradiated graphite waste processing. Molten salts are capable to retain a considerable part of radionuclides, to neutralize acidic off gases, moreover spent salts could be vitrified on completion of the process. We have used thermodynamic modelling to assess the efficiency of molten salt oxidation of graphite. Equilibrium compositions of both the melt and the off gas were calculated depending on graphite content and temperature. The feasibility of decontaminating the irradiated graphite of its near-surface layers using complete molten salt oxidation was investigated in a series of laboratory experiments. As the molten salt medium used to oxidize irradiated graphite we have investigated lithium, potassium and sodium carbonates. Sodium sulphate, boron oxide, barium and potassium chromates were also used as oxidizers. Tests were carried out at 870–1270 К. The efficiency of decontamination of graphite blocks has been assessed based on the activity of 137Cs and 60Со in the samples before and after molten salt oxidation. Data obtained demonstrated the feasibility of decontamination by molten salt removal of near surface layers on irradiated graphite blocks. Decontamination rate and efficiency depend on oxidizers used and temperature of process.
Reducing the uncertainty of nuclear fuel dissolution: an investigation of UO2 analogue CeO2
Authors: Corkhill Claire L. , Bailey Daniel J. , Thornber Stephanie M. , Stennett Martin C. , Hyatt Neil C.
Published: February 2013

In this investigation, CeO2 analogues, which approximate as closely as possible the characteristics of fuel-grade UO2, were characterised after dissolution under a wide range of conditions. Powdered samples were subject to a range of aggressive and environmentally relevant alteration media with different solubility controls, and reacted at 70 °C and 90 °C. Dissolution kinetics were monitored through analysis of the coexisting aqueous solution. Monolith samples were monitored for development of surface defects such as pores and dissolution pits, in addition to morphological changes at grain boundaries and surface pores upon dissolution under aggressive conditions. The surfaces were analysed using confocal profilometry, vertical scanning interferometry and scanning electron microscopy. Dissolution rates were found to be greatest in low pH solutions and at higher temperatures. Preferential dissolution appears to occur at grain boundaries and on particular grains, suggesting a crystallographic control on dissolution.
VUV photon induced strain free amorphous silica coating with hard protective waterproof property for high power laser optics
Authors: Sato Yuji , Motokoshi Shinji , Nakatsuka Masahiro , Okamoto Yoshiaki , Murahara Masataka
Published: February 2013

An amorphous silica film has been coated on a fused silica glass and KH2PO4 [KDP] crystal by using the photo oxidization of Dimethy-siloxane silicone [DMSS] oil by using a xenon [Xe2] excimer lamp at room temperature. The DMSS oil [-O-Si[CH3]2-O-]n was spin-coated on a fused silica glass to make a thin film, and the Xe2 lamp light was vertically irradiated in the presence of oxygen. Thus, the organic oil was changed into inorganic glass. In order to investigate the photochemical reaction process, the fluorescence intensity was measured by spectrometer at actual time and the new method to form a transparent, photo-oxidized thin film efficiently has been established. The interferometer analysis was conducted to investigate the strain of the coating samples. It became clear that the no strain were caused by vitrification of the silicone oil on the fused silica galass with Xe2 lamp irradiation.
Long-term aqueous alteration kinetics of an alpha-doped SON68 borosilicate glass
Authors: Tribet Magaly , Rolland Séverine , Peuget Sylvain , Magnin Magali , Broudic Véronique , Janssen Arne , Wiss Thierry , Jégou Christophe , Toulhoat Pierre
Published: February 2013

The long-term behavior of nuclear glass subjected to alpha radiation by minor actinides must be investigated with a view to geological disposal. This study focuses on the effect of alpha radiation on the chemical reactivity of R7T7 glass with pure water, mainly on the residual alteration rate regime. A glass specimen doped with 0.85 wt% 239PuO2 (α emitter) is leached under static conditions in argon atmosphere at 90°C and at a high surface-area-to-volume ratio (S/V = 20 cm−1). The alteration rate is monitored by the release of glass alteration tracer elements (B, Na and Li). Radiation effects on the leached glass and its gel network are characterized by SEM and TEM analyses. Plutonium release is also measured by radiometry and its chemical oxidation state is assessed by measuring the pH and redox potential of the leachates. The results do not highlight any significant effect of alpha radiation on the residual alteration of this doped glass. This observation is consistent with SEM and TEM characterizations, which show that a protective layer can be formed under alpha radiation. Very low concentrations of soluble plutonium are measured in the leachate. These Pu releases are three orders of magnitude lower than the boron release, indicating strong plutonium retention.
Structural Characterization and Analysis of Glasses in the Al2O3-B2O3-Fe2O3-Na2O-SiO2 System
Authors: Stefanovsky S.V. , Nikonov B.S. , Omelyanenko B.I. , Fox K.M. , Marra J.C.
Published: February 2013

Glasses in the Al2O3-B2O3-Fe2O3-Na2O-SiO2 system were produced at a temperature of 1150 °C, annealed, and examined using XRD and SEM/EDX. Surfaces of same samples were additionally heat-treated and etched with HCl. The pristine samples were X-ray amorphous and rather homogeneous except the B1 sample that contained trace crystalline phases of carnegieite/nepheline and spinel. Corrosion of these glasses via an etching treatment proceeds by a conventional mechanism with damage of their surface layers, however, the B2 glass exhibits a “drop-type” microstructure after etching that suggests occurrence of liquid-liquid phase separation.
Sleep terrors antecedent is common in adolescents with migraine
Authors: Fialho Libânia Melo Nunes , Pinho Ricardo Silva , Lin Jaime , Minett Thais Soares Cianciarullo , Vitalle Maria Sylvia de Souza , Fisberg Mauro , Peres Mario Fernando Prieto , Vilanova Luiz Celso Pereira , Masruha Marcelo Rodrigues
Published: February 2013

Migraines and sleep terrors (STs) are highly prevalent disorders with striking similarities. The aim of this study was to evaluate the effect of the antecedent of STs by comparing adolescents suffering from migraines with healthy controls in a large consecutive series. METHODS: All patients were subjected to a detailed headache questionnaire and were instructed to keep a headache diary during a two-month period. The age range was 10 to 19 years. The diagnosis of STs was defined according to the International Classification of Sleep Disorders. RESULTS: A total of 158 participants were evaluated. Of these participants, 50 suffered from episodic migraines (EMs), 57 had chronic migraines (CMs) and 51 were control subjects (CG). Participants who had a history of STs had significantly more migraines than participants who did not. CONCLUSIONS: Migraine is strongly associated with a history of STs in the adolescent population independent of demographics and pain intensity.
Produção de alho em função de diferentes níveis de água e esterco bovino no solo
Authors: Melo João Paulo L. , Oliveira Ademar P. de
Published: February 2013

O alho é cultivado no período do frio, o que coincide com a época seca do ano nas regiões produtoras brasileiras. Portanto, são necessárias irrigações frequentes para suprir a necessidade hídrica da lavoura. Além da irrigação, a adubação orgânica no alho é prática rotineira, não sendo poucos os que dela fazem a única fonte de nutrientes. Assim, este trabalho teve como objetivo avaliar o efeito de diferentes níveis de água e de matéria orgânica no solo sobre a produção e qualidade do alho. O experimento foi conduzido no Centro de Ciências Agrárias da Universidade Federal da Paraíba, em Areia, em casa-de-vegetação entre maio a outubro de 1995, época fria e seca. O delineamento experimental utilizado foi blocos casualizados, com os tratamentos distribuídos em esquema fatorial 4 x 4. O primeiro fator correspondeu a níveis de água no solo (65, 75, 85 e l00% da capacidade de campo) e, o segundo fator, a quantidades de esterco bovino curtido (0, 20, 30, e 40 t/ha). O experimento foi conduzido com três repetições e parcelas de seis plantas, espaçadas de 0,30 m x 0,10 m, empregando-se a cultivar Dourados. Observou-se que o comprimento das plantas aumentou à medida que elevou-se os níveis de água, atingindo 44,0 cm e 46 cm 60 dias após o plantio (dap), e 45,0 cm e 47,5 cm 90 dap, nos níveis de 85% e 100% de água disponível no solo, respectivamente. O peso máximo dos bulbos (14,85 g), ocorreu com 95,15% de água disponível no solo, enquanto a produção total máxima atingiu 4.604 kg/ha com 97,93% de água disponível no solo. A cada ponto percentual de água disponível no solo que foi elevado correspondeu um incremento de 80,35 kg/ha de bulbos comerciais e uma redução de 10,71 kg/ha de bulbos não comerciais. A aplicação de esterco e a interação entre níveis de água e de esterco não influenciaram significativamente as características estudadas.
Tombamento e vigor de mudas de cebola em função de diferentes profundidades e densidades de semeadura
Authors: Boff Pedro , Debarba João F.
Published: February 2013

O sistema de cultivo da cebola (Allium cepa) por transplante passa pela fase de muda, onde o desenvolvimento da planta depende de vários fatores edafoclimáticos e do manejo agronômico. Este trabalho teve o objetivo de avaliar o efeito da profundidade e da densidade de semeadura da cebola no tombamento e vigor de mudas produzidas em canteiros cobertos com pó-de-serra de Pinus sp. Os experimentos foram conduzidos na Epagri - Estação Experimental de Ituporanga, utilizando-se a cultivar Bola Precoce entre maio e julho de 1993 e, a população crioula, entre junho e agosto de 1993 e 1994. O delineamento experimental empregado foi blocos ao acaso, com três repetições e parcelas de 3 m². Os resultados mostraram que, na profundidade de semeadura de 2 cm, melhores mudas foram obtidas em densidades de até 3 g/m² de semente e, na densidade de semeadura de 3 g/m², melhores mudas foram obtidas com profundidades de 1 e 2 cm. Profundidade de 4 cm aumentou, significativamente, o tombamento da folha cotiledonar (estádio conhecido como chicote), reduzindo a sobrevivência de plantas. Por outro lado, mudas obtidas com semeadura a 1 cm apresentaram menor peso fresco por planta, em comparação com mudas obtidas com semeadura em profundidades de 2 e 4 cm, sendo a diferença significativa na população crioula. Densidade de semeadura acima de 3 g/m² reduziu o peso médio e o número de mudas aptas ao transplante. O tombamento foi maior nas maiores densidades apenas em 1994. As diferentes densidades de semeadura estudadas (2, 3 e 5 g/m²) não afetaram emergência, estande ou sobrevivência de plantas.
Produção dos clones de cará Liso e Caramujo conduzidos em forma rasteira e tutorada
Authors: Heredia Z. Néstor A. , Vieira Maria do Carmo , Griep Raquel
Published: February 2013

Foram estudados dois clones de cará (Liso e Caramujo), sob duas formas de condução das plantas (rasteiro e tutorado) em dez épocas de colheita (dos 60 aos 330 dias após o plantio, em intervalos mensais), plantados em Latossolo Roxo distrófico, textura argilosa pesada. Os tratamentos foram arranjados no fatorial 2x2, no delineamento experimental de blocos casualizados, com três repetições, em cada época de colheita, totalizando 120 parcelas. As parcelas de 15 m² foram compostas de dez e de cinco plantas, com espaçamento de 1,5 m x 1,0 m e 3,0 m x 1,0 m para a cultura tutorada e para a rasteira, respectivamente. A propagação do cará foi feita com pedaços de rizomas de ± 150 g, em covas. A irrigação se fez por sulcos. O tutoramento foi realizado seguindo o sistema de haste cruzada. Para conhecer as características produtivas dos clones, nas duas formas de condução, em cada colheita foram avaliadas as produções de matérias frescas de ramos + folhas, de rizomas e de tubérculos e a composição nutritiva desses. A produção de matéria fresca de ramos + folhas foi dependente do clone e da forma de condução da cultura, sem ter associação entre os dois fatores. Quando relacionadas as produções de matérias frescas de tubérculos e de rizomas foi observado que o 'Liso' produziu somente rizomas, com máxima produção aos 285 dias, independente da forma de condução da cultura. A forma de produção do clone Caramujo mostrou dependência da forma de condução (92,06% de rizomas e 7,94% de tubérculos, quando tutorada e 46,12% de rizomas e 53,88% de tubérculos, quando rasteira). As análises sobre valor nutritivo dos rizomas e tubérculos mostraram que os rizomas do clone Liso foram os melhores. As produções totais dos clones de cará (tubérculos + rizomas) mostraram que o Caramujo (50,266 t/ha) produziu 181,58% a mais que o Liso. As plantas rasteiras dos dois clones de cará produziram mais que as tutoradas e por isso, recomenda-se a condução rasteira para os dois clones.
Oferta e comercialização de melancia na CEASA-PI (1991- 1996)
Authors: Andrade Júnior Aderson S. de , Duarte Rosa Lúcia R.
Published: February 2013

Realizou-se este trabalho com o objetivo de analisar e fornecer informações quanto à oferta, procedência e comercialização de melancia no Piauí, no período de 1991 a 1996. Foram utilizados os dados básicos referentes ao suprimento mensal de melancia, por procedência, obtidos junto à CEASA-PI. Verificou-se que foram comercializadas no mercado atacadista de Teresina (PI) um volume médio anual de 11.250 t de melancia, correspondendo a um acréscimo de 33,8% em relação ao volume médio anual de 8.408,3 t obtido no período de 1986 a 1991. Os estados que mais contribuíram para a oferta de melancia foram Pernambuco, Bahia e Piauí com um volume médio de melancia comercializada e percentual de participação de 5.139,5 t (45,68%), 3.765,4 t (33,48%) e 1.798,5 t (15,97%), respectivamente. As maiores quantidades de melancia comercializadas foram oriundas dos municípios de Petrolina (PE), Juazeiro (BA), Barreiras (BA) e Barras (PI), destacando-se como os mais regulares quanto ao fornecimento do produto. Os meses do ano em que houve menor oferta de Pernambuco e Bahia foram junho-julho, setembro-outubro e dezembro, recomendando-se ao produtor piauiense que, uma vez atingidos níveis econômicos de produtividade, procure ofertar seu produto neste período.
Perfil dos acidentes de trabalho ocorridos no município de Araçatuba-SP nos anos de 2000 e 2001
Authors: Pizzatto Eduardo , Garbin Cléa Adas Saliba , Amadei Magno
Published: February 2013

O objetivo do presente estudo consiste em descrever o perfil dos acidentes de trabalho ocorridos no município de Araçatuba-SP nos anos de 2000 e 2001. Para tanto, foram analisadas as Comunicações de Acidentes de Trabalho (CATs) emitidas no referido período e as informações pertinentes transcritas em formulário específico elaborado através do programa estatístico Epi-Info versão 6.04, utilizado para tabulação e análise dos dados obtidos. Foram analisadas 772 CATs, das quais 656 correspondiam à ocorrência de acidentes típicos, 92 a acidentes de trajeto e 24 a doenças ocupacionais. A média de idade dos acidentados foi de 32,42 anos (d.p. 10,88) e o tempo médio trabalhado até o momento do acidente foi de 4,15 horas (d.p. 2,73). Quanto ao gênero, 632 acidentes (81,9%) ocorreram com trabalhadores do sexo masculino e 140 (18,1%) com trabalhadores do sexo feminino. O presente estudo revela um amplo predomínio de acidentes de trabalho classificados como típicos, além de uma maior prevalência em trabalhadores do sexo masculino.
A experiência dos diários reflexivos no processo formativo de uma residência multiprofissonal em saúde da família
Authors: Oliveira Filipe Guterres Venancio Costa de , Carvalho Maria Alice Pessanha de , Garcia Margareth Rose Gomes , Oliveira Simone Santos
Published: February 2013

O diário reflexivo foi adotado na Residência Multiprofissional em Saúde da Família da Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz (Ensp/Fiocruz), Rio de Janeiro, Brasil. Durante dois anos acompanhamos uma equipe multiprofissional de três residentes em um módulo da Estratégia de Saúde da Família (ESF), buscando compreender as origens do instrumento no diário de campo da antropologia e no portfólio reflexivo da educação. O instrumento mostrou-se eficaz, possibilitando acompanhar as atividades práticas e a atuação das equipes e fornecendo subsídios para avaliação dos estudantes como recurso para a reformulação da prática; também propicia o desenvolvimento dos princípios éticos e da relação para com os indivíduos e comunidade. No momento em que os alunos se viram diante do desafio de enfrentar a realidade, o dia a dia da comunidade, ficou clara a importância do Diário.
O psicanalista no tratamento da dor
Authors: Minatti Sueli Pinto
Published: February 2013

A dor se manifesta como mal-estar do corpo e no corpo, e tende a ser encaminhada para tratamento médico. O objetivo deste trabalho é analisar a queixa dolorosa do ponto de vista do tratamento psicanalítico, retomando algumas acepções relacionadas ao tratamento da dor, encontradas na obra de Freud. Partimos da experiência no trabalho em hospital pediátrico, utilizando a análise do atendimento de pacientes com queixas de dor para definir e situar a dor no campo da psicanálise, e distingui-la do campo da medicina. No texto, pode-se acompanhar a dor como signo de sofrimento e diversas formas de abordá-la tanto pelo sujeito que a porta quanto pelas instituições que propõem seu cuidado.
Dor e gozo: de Freud a Lacan
Authors: Queiroz Edilene Freire de
Published: February 2013

O fenômeno da dor crônica tem obrigado os pesquisadores a ampliarem a compreensão da dor para além do fenômeno sensório e a reconhecerem a dimensãsociocultural e psíquica da dor. Para os psicanalistas a dor é testemunho da presença da pulsão no corpo. Discutiremos o problema da dor e sua aproximação com o gozo na perspectiva da metapsicologia freudiana e lacaniana. Na perspectiva freudiana, a dor está regida pelo princípio do prazer-desprazer, já na lacaniana o gozo diz respeito ao que está para além deste princípio, ou seja, liga-se à pulsão de morte.
A psicose na contemporaneidade e seus novos sintomas: do pathos ao orthos
Authors: Henriques Rogério Paes
Published: February 2013

Expõe-se aqui a psicose clássica, "freudo-lacaniana", formulada por Lacan, a partir da herança freudiana, em seu ensino linguístico-estrutural na década de 1950, cujo caso paradigmático é Schreber, e a "psicose lacano-milleriana", surgida com a clínica borromeana de Lacan em meados da década de 1970, com base no sinthoma joyceano, denominada recentemente "psicose ordinária", segundo a orientação dos teóricos ligados ao Campo Freudiano. Pretende-se estabelecer uma análise comparativa entre esses dois conceitos com ênfase nos seus modos de suplência.
O lugar do perito e o lugar do analista na abordagem do louco infrator
Authors: Gomes Romina Moreira de Magalhães
Published: February 2013

Busca-se identificar e discutir o lugar da perícia e o do analista no acompanhamento de loucos infratores, a partir das contribuições da psicanálise de orientação lacaniana. Enquanto a perícia se orienta pelo saber disciplinar que visa o controle baseado em modelo standard de tratamento, resultando na segregação das singularidades, a psicanálise propõe que se ocupe um lugar esvaziado de saber e que o analista se guie pelas invenções do sujeito capazes de conectá-lo ao laço social, sem perder de vista os modos de satisfação singulares ligados às amarrações de cada um.
Mal-estar na civilização e desastre totalitário
Authors: Villa François
Published: February 2013

O autor interroga a relação entre o desastre totalitário e a psicanálise. Será que a psicanálise, os psicanalistas, tem algo pertinente a dizer acerca da barbárie? Esta não é uma dimensão que estaria fora do nosso campo? Será que podemos afirmar que o desastre que sobreveio na cultura não teria tido senão pouca ou nenhuma consequência sobre nossa "teoria", nossas "práticas", nossa "arte"? Não é incrível que demos seguimento à tarefa psicanalítica como se a onda da irrupção do terror e da barbárie na cultura não tivesse abalado as quatro paredes de nossos consultórios? Estas são perguntas que este artigo enfrenta e que levam o autor a se voltar sobre a questão dos estados limites a partir de sua reflexão acerca dos efeitos psíquicos duradouros do totalitarismo.
Home-range and space use by Didelphis albiventris (Lund 1840) (Marsupialia, Didelphidae) in Mutum Island, Paraná river, Brazil
Authors: Sanches Vítor Quadros Altomare , Gomes Mariuciy Menezes de Arruda , Passos Fernando de Camargo , Graciolli Gustavo , Ribas Augusto Cesar de Aquino
Published: February 2013

Home-range is the area used by an animal in its daily activities. Home-range studies provide data on species mating systems and territorial behavior. Our main goal was to estimate the Didelphis albiventris (Lund 1840) home-range in Mutum Island, Paraná River, Brazil. The study was carried out in 2008 from March to October on a 19.20 ha grid. The island is part of the Parana River Islands and Floodlands Federal Environmental Protection Area, with vegetation composed by Alluvial Semideciduous Seasonal Forest in a region of Subtropical Wet climate. The sampling effort was 3,360 traps-night resulting in 152 Didelphis albiventris (Lund 1840) captures. Forty-one Didelphis albiventris (Lund 1840) individuals were captured in 42 capture stations, composed by a trap placed on the floor and another in understory (2 m high). The animals were mostly terrestrial, independently of age or sex. Four females and five males, which were recaptured at least five times, were used to calculate home-range using the minimum convex polygon method. The mean home-range estimate was 2.33 ± 2.32 ha, similar to previous estimates provided by other methods, suggesting that our capture grid area, that was larger than usually applied for mark-capture studies for this species, have not underestimated the home-ranges. Evidences of the relation between individual home-range area and body mass were observed. Home-range overlaps occurred between males, females and males with females; the average overlap was 33.74%, which may be related to a promiscuous mating system, and suggests female territoriality.
Life history of three catfish species (Siluriformes: Ariidae) from southeastern Brazil
Authors: Denadai Márcia Regina , Bessa Eduardo , Santos Flávia Borges , Fernandez Wellington Silva , Santos Fernanda Motta da Costa , Feijó Mônica Malagutti , Arcuri Andreza Cristina Dias , Turra Alexander
Published: February 2013

This study evaluated the spatio-temporal distribution, reproduction and diet of the catfishes Genidens genidens, G. barbus and Aspistor luniscutis in Caraguatatuba Bay. Their sizes were recorded and the sex and reproductive stage identified. The abundance was compared between areas (South and North) and among months (August 2003 - October 2004). The species had different spatial distributions, allowing them to coexist. The temporal distribution reflected their tendencies to migrate in the reproductive period, as evidenced by the dominance of small immature individuals in the bay. G. genidens tended to reproduce in winter, and A. luniscutis in spring. The diet of G. genidens consisted of crustaceans, mollusks (shells), fish scales, ostracods, and bivalve siphons. G. barbus consumed a high proportion of mysids, followed by fish (bones and scales). For A. luniscutis, the diet was based on fish scales and crustaceans. High quantities of particulate organic matter were observed in the diet of all three species, as previously known for estuarine catfishes. The consumption of fish scales may reflect a lepidophagic habit. A small overlap was observed among the diets, reflecting differences in their environments as well as in the proportions of each item ingested.
Natural forest regeneration in abandoned sugarcane fields in northeastern Brazil: floristic changes
Authors: Nascimento Ladivania Medeiros do , Sampaio Everardo Valadares de Sá Barretto , Rodal Maria Jesus Nogueira , Silva Suzene Izídio da , Lins e Silva Ana Carolina Borges
Published: February 2013

Surveys were undertaken to examine the floristic changes during secondary succession in three areas of 12 and three of 20-year-old secondary forests in Pernambuco State, Brazil. Two hundred and six species were identified, with 136 being found in the 12-year-old secondary forest and 161 species in the 20-year-old forest. Fabaceae and Myrtaceae were the most important families, increasing in species numbers with regeneration age. Of the 216 species, 115 were trees, 48 shrubs, 16 herbaceous plants, and 24 woody lianas, without significant differences between the two regeneration site ages. NMDS analysis revealed a formation of two floristic groups, distinguishing secondary and mature forests, with a further division within secondary forests in accordance with the time since abandonment. Similarity analysis ANOSIM confirmed the significance of the groups, which had floristic composition significant distinct (R=0.96) and 63% of dissimilarity (SIMPER). However, the sharing of 68 arboreal species between the secondary and mature forests suggests a floristic convergence. DCA analysis of the arboreal component as well as the other plant habits suggested that the separation of the subgroups is correlated with physical and chemical variables of the soils. All of these results indicate that, within the chronosequence analyzed, the velocity and direction of the floristic composition during secondary succession was influenced not only by the time of their abandonment, but also by a wide range of environmental variables.
Diet of the toad Rhinella icterica (Anura: Bufonidae) from Atlantic Forest Highlands of southeastern Brazil
Authors: Sabagh Leandro Talione , Carvalho-e-Silva Ana Maria Paulino Telles , Rocha Carlos Frederico Duarte
Published: February 2013

In this study, we present some information of the regarding throphic niche from the anuran toad Rhinella icterica living in high altitudes above 2000 m a.s.l. from a habitat of the Atlantic Forest Biome - the Altitude Fields in the Itatiaia National Park. We found 150 prey items in toad stomachs, belonging to five prey types, as well as skin remains and some remains of plant material. The index of relative importance indicated that most important prey types were beetles and ants, these last composing 70% of the diet numerically and the trophic niche breadth (B) was 1.81. The relatively low diversity of prey types we recorded in the diet of R. icterica of Itatiaia and numerically dominated by ants suggests some preference for this item. We do not found significant relationship between the toad measurements with the preys' measurements. We concluded that R. icterica toads at the highlands of Itatiaia feeds on arthropods, mainly ants and coleopterans and that the high consumption of preys with relatively small and similar size as ants in the diet prevents an expected relationship among frog body or mouth size and prey volume and size.
Predation on Tropidurus hispidus (Squamata: Tropiduridae) by Lasiodora klugi (Aranea: Theraphosidae) in the semiarid caatinga region of northeastern Brazil
Authors: Vieira Washington Luiz Silva , Gonçalves Maria Betânia Ribeiro , Nóbrega Rômulo Pantoja
Published: February 2013

A predation event on Tropidurus hispidus (Tropiduridae) by the crab spider Lasiodora klugi (Theraphosidae) was observed in an arboreal caatinga area in northeastern Brazil. Arthropods are potential predators of small vertebrates and researchers have reported predation events involving spiders and herpetofauna in Neotropical regions. As such, the present short communication is the second case of predation of spiders on Tropidurus lizards in Brazil, and the first for the semiarid caatinga, reinforcing the argument that large spiders have relevant roles as predators of these animals.
Potential Adoption of IFRS by the United States: A Critical View
Authors: Kaya Devrimi , Pillhofer Julian A.
Published: February 2013

SYNOPSIS

This paper discusses the potential adoption of International Financial Reporting Standards (IFRS) by the United States (U.S.). We use the reporting decisions of foreign U.S. listed firms as signals for U.S. capital markets' accounting standard preferences and demand for financial information. Our analysis of the 2009 (2010) annual reports filed with the SEC reveals that only 19 (23) percent of all foreign issuers file IFRS reports, although the reconciliation to U.S. GAAP requirement was eliminated in 2007. Thus, our results indicate that the majority of foreign filers in 2009 and 2010 use U.S. GAAP disclosure practices. Moreover, we provide evidence that cross-listed firms rarely change their filing behavior over the two-year sample period. Our analysis shows that the International Accounting Standards Board (IASB) is subject to problems connected with its structure and its limitations as a non-governmental organization (NGO). Therefore, we call for caution toward IFRS adoption by the SEC. We conclude by recommending an international treaty to provide better funding and oversight of the IASB and that steps are taken to harmonize enforcement of accounting standards around the world. Our analysis should be of interest to regulators, standard setters, national authorities, and companies interested in the current debate on a global set of accounting standards.
Wettability modification of electrospun poly(ε-caprolactone) fiber by femtosecond laser irradiation
Authors: He Lingna , Farson Dave F. , Chen Jian , Lannutti John J. , Rokhlin Stan I.
Published: February 2013

The effect of femtosecond laser irradiation on the wettability of electrospun poly(ɛ-caprolactone) fiber mesh substrates was studied. It was observed that water contact angles on treated substrates decreased as laser power increased. Nanometer-scale gold coating on the surfaces allowed the effect of change in morphology on wettability to be quantified independently from the effect of chemistry change. Morphology change and chemistry change were both found to have independent hydrophilic effects on the surface wettability change that increased with laser power. As laser power increased, the treated sample surface transitioned from a rough fibrous mesh to more as a porous flat film. A laser power of 4.5 mW was found to divide both the surface morphology change and morphology-induced wettability change into high-power and low-power regimes. The Cassie-Baxter model successfully predicted the wettability of gold-coated surfaces using measured characteristics of surfaces from both regimes. All the laser-treated and untreated surfaces investigated in this work exhibited robust hydrophobic behavior.
Investigation on multi-track multi-layer epitaxial growth of columnar crystal in direct laser forming
Authors: Do XuanTuoi , Li Dichen , Zhang Anfeng , He Bin , Zhang Haiyang , Doan Tatkhoa
Published: February 2013

Direct laser forming has the advantage that the heat input is very much localized and it leads to large temperature gradient. Therefore, the solidification velocity can be controlled to stabilize the columnar crystal growth and to avoid the growth of equiaxed grains in the laser clad. Consequently, single crystal can be deposited onto a single crystal substrate. In this paper, DZ125L Ni based super-alloy was used for the experiment, the epitaxial growth of columnar crystal onto the substrate was characterized, and the epitaxial growth of columnar crystal in multi-track multi-layer deposition was obtained by analyzing the single cladding track characteristics and optimizing the technological parameters. The investigation is helpful for the approach to form 3D metal parts such as turbine blades, which require columnar crystal microstructure.
The Interrater Reliability of Physical Examination Tests That May Predict the Outcome or Suggest the Need for Lumbar Stabilization Exercises
Authors: Rabin Alon , Shashua Anat , Pizem Koby , Dar Gali
Published: February 2013

Study Design

Interrater reliability.

Objectives

(1) To examine the interrater reliability of an existing clinical prediction rule (CPR) to predict the success of lumbar stabilization exercises (LSE), and (2) to examine the interrater reliability of 4 clinical tests that may be useful in determining the need for LSE.

Background

Physical therapists commonly use LSE to manage patients with low back pain. The clinical efficacy of LSE is unclear. A CPR has been previously suggested to identify patients most likely to benefit from LSE. The passive lumbar extension test, lumbar extension load test, active straight leg raise test, and active hip abduction test are 4 clinical tests that may also suggest the need for LSE. The reliability of these tests has not been established sufficiently.

Methods

Thirty patients with low back pain, who participated in a larger randomized clinical trial, underwent all tests by 2 independent examiners. Kappa coefficients with 95% confidence intervals (CIs) were calculated to establish the interrater reliability of the CPR and individual tests.

Results

The interrater reliability of the CPR was excellent (κ = 0.86; 95% CI: 0.65, 1.00). The interrater reliability of the individual items making up the CPR, as well as that of the passive lumbar extension test, was substantial (κ = 0.64–0.73 and κ = 0.76, respectively; 95% CI: 0.46, 1.00). The interrater reliability of the active straight leg raise test (κ = 0.53; 95% CI: 0.20, 0.84) and lumbar extension load test (κ = 0.47; 95% CI: 0.14, 0.78) was moderate. The interrater reliability of the active hip abduction test was poor (κ = -0.09; 95% CI; −.35, 0.27).

Conclusion

With the exception of the active hip abduction test, all other clinical tests can be considered sufficiently reliable for clinical use. The relatively small sample size likely contributed to the fairly wide confidence intervals around some of the reliability indices. J Orthop Sports Phys Ther 2013;43(2):83–90. Epub 14 January 2013. doi:10.2519/jospt.2013.4310