bluuebunny/crossref_metadata_2025 huggingface dataset:
Laser beam welding of atmosphere aluminum die cast material using high frequency beam oscillation and brilliant beam sources
Authors: Dittrich Dirk , Jahn Axel , Standfuss Jens , Beyer Eckhard
Published: June 2017

In the serial production of components for automotive applications such as cooling and air-conditioning systems, aluminum die-cast materials are frequently used due to their excellent castability. The aim of providing light weight components can be approached with thin walled cross sections even for complex structural parts. However, cast components are usually connected to semifinished products such as profiles or tubes. The connections have to be mostly pressure tight. The joining technique for these applications has to be highly productive to obtain high component outcome and cost-efficient. Laser beam welding techniques are especially suitable for these tasks. Die-cast components have limited or no weldability due to their manufacturing process. This is due to entrapped gases within pores or cavities under high pressure conditions. Furthermore, the mold release agents for the die-cast process are inappropriate for obtaining homogeneous and sound weld seams. Consequently, this results in a larger number of pores in the weld seam and stochastic melt pool blow-outs, which prohibit mostly the use of the component. To solve these issues, a new welding technique, remoweld®T, has been developed at Fraunhofer IWS. This unique method has been extensively tested and used for serial-production. The decisive step was to use laser sources with brilliant beam quality in combination with a high frequency beam oscillation within the melt pool. In this paper, the technological approach will be presented. With the remoweld®T method, it was possible to obtain homogeneous weld seams with low porosity and a strongly reduced distortion for the first time. Minor component tolerances and a reproducible joining technique with a high output for serial production can be achieved.
Palavra e conceito: a crítica de Giordano Bruno ao pedantismo
Authors: Dos Santos Willian Ricardo
Published: June 2017

Em seus Diálogos Italianos Giordano Bruno (1548-1600) elabora uma forte crítica à tradição acadêmica de seu tempo, a qual estava atrelada a um exagerado uso de recursos linguísticos para tratar de problemas filosóficos. Neste artigo apresento um viés da crítica de Bruno aos humanistas aristotélicos de Oxford, os quais Bruno satiriza compondo a figura do pedante. O pedante é um conhecedor de línguas clássicas, que, contudo, é incapaz de pensar filosoficamente. Nosso objetivo é apresentar como que Bruno, apoiado em sua ontologia, desenvolve sua filosofia opondo-se ao pedante tanto no conteúdo filosófico quanto na forma expositiva.
A relação entre Psicologia e Sociologia na obra de Wilhelm Dilthey
Authors: Santini Guilherme José
Published: June 2017

Tradução do artigo "The Relation between Psychology and Sociology in the work of Wilhelm Dilthey", de Max Horkheimer.
Evaluation of a telemetric gastrointestinal pill for continuous monitoring of gastrointestinal temperature in horses at rest and during exercise
Authors: Verdegaal Elisabeth-Lidwien J. M. M. , Delesalle Catherine , Caraguel Charles G. B. , Folwell Louise E. , McWhorter Todd J. , Howarth Gordon S. , Franklin Samantha H.
Published: June 2017

OBJECTIVE To evaluate use of a telemetric gastrointestinal (GI) pill to continuously monitor GI temperature in horses at rest and during exercise and to compare time profiles of GI temperature and rectal temperature.

ANIMALS 8 Standardbred horses.

PROCEDURES Accuracy and precision of the GI pill and a rectal probe were determined in vitro by comparing temperature measurements with values obtained by a certified resistance temperature detector (RTD) in water baths at various temperatures (37°, 39°, and 41°C). Subsequently, both GI and rectal temperature were recorded in vivo in 8 horses over 3 consecutive days. The GI temperature was recorded continuously, and rectal temperature was recorded for 3.5 hours daily. Comparisons were made between GI temperature and rectal temperature for horses at rest, during exercise, and after exercise.

RESULTS Water bath evaluation revealed good agreement between the rectal probe and RTD. However, the GI pill systematically underestimated temperature by 0.14°C. In vivo, GI temperature data were captured with minimal difficulties. Most data loss occurred during the first 16 hours, after which the mean ± SD data loss was 8.6 ± 3.7%. The GI temperature was consistently and significantly higher than rectal temperature with an overall mean temperature difference across time of 0.27°C (range, 0.22° to 0.32°C). Mean measurement cessation point for the GI pill was 5.1 ± 1.0 days after administration.

CONCLUSIONS AND CLINICAL RELEVANCE This study revealed that the telemetric GI pill was a reliable and practical method for real-time monitoring of GI temperature in horses.
Antigenicity of mesenchymal stem cells in an inflamed joint environment
Authors: Hill Jacqueline A. , Cassano Jennifer M. , Goodale Margaret B. , Fortier Lisa A.
Published: June 2017

OBJECTIVE To determine whether major histocompatability complex (MHC) class II expression in equine mesenchymal stem cells (MSCs) changes with exposure to a proinflammatory environment reflective of an inflamed joint.

SAMPLE Cryopreserved bone marrow-derived MSCs from 12 horses and cartilage and synovium samples from 1 horse euthanized for reasons other than lameness.

PROCEDURES In part 1 of a 3-part study, the suitability of a quantitative reverse transcriptase PCR (qRT-PCR) assay for measurement of MHC class II expression in MSCs following stimulation with interferon (IFN)-γ was assessed. In part 2, synoviocyte-cartilage cocultures were or were not stimulated with interleukin (IL)-1β (10 ng/mL) to generate conditioned media that did and did not (control) mimic an inflamed joint environment. In part 3, a qRT-PCR assay was used to measure MSC MHC class II expression after 96 hours of incubation with 1 of 6 treatments (control-conditioned medium, IL-1β-conditioned medium, and MSC medium alone [untreated control] or with IL-1β [10 ng/mL], tumor necrosis factor-α [10 ng/mL], or IFN-γ [100 ng/mL]).

RESULTS The qRT-PCR assay accurately measured MHC class II expression. Compared with MHC class II expression for MSCs exposed to the untreated control medium, that for MSCs exposed to IL-1β was decreased, whereas that for MSCs exposed to IFN-γ was increased. Neither the control-conditioned nor tumor necrosis factor-α medium altered MHC class II expression.

CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that MSC exposure to proinflammatory cytokine IL-1β decreased MHC class II expression and antigenicity. Treatment of inflamed joints with allogeneic MSCs might not be contraindicated, but further investigation is warranted.
Situação vacinal de crianças assistidas na rede de atenção básica de São Luís: período de agosto de 2013 a julho de 2014
Authors: Marques Paulo Roberto da Silva , Xavier Ilis Maria Lucas
Published: June 2017

Introdução: Vacinação é o conjunto de mecanismos através dos quais o organismo humano reconhece uma substância como estranha para, em seguida, metabolizá-la e produzir resposta imune. Vacinar é sinônimo de prevenção, sendo assim, imprescindível saber a situação vacinal de um local, para se tomar as medidas adequadas para melhorias na cobertura vacinal. Objetivo: Avaliar a situação vacinal infantil na rede de Atenção Básica em São Luís- Maranhão. Materiais e Métodos: Este trabalho trata-se de um estudo quantitativo, descritivo, transversal do Programa de Educação pelo Trabalho da Universidade Ceuma. As variáveis descritivas foram avaliadas através de gráficos, percentuais e tabelas de frequências. As variáveis em estudo foram avaliadas pelo teste do Qui-quadrado, sendo a escolaridade avaliada pelo Teste Exato de Fisher, e o resultado final pelo teste do t Student. Resultados: Foram avaliadas 126 Cadernetas de Vacinação, dos quais 65,87% (83) crianças estavam em atraso, enquanto apenas 34,12% (43) encontrava-se em dia (p= 0,040). Conclusão: A cobertura vacinal ainda não é efetiva em São Luís-Maranhão. Seja por dificuldade do sequenciamento de vacinas, seja por uma situação familiar conturbada, e vários outros motivos, mas o certo é que há uma necessidade imediata de se melhorar a cobertura vacinal dessas crianças. Palavras-chave:Crianças. Vacinação. Prevenção.
Đặc điểm hình ảnh và giá trị của cộng hưởng từ 1.5T trong phân loại giai đoạn ung thư cổ tử cung
Authors: Doãn Ngọc Văn , Bui Lenh Van , Bui Dieu
Published: June 2017

Nghiên cứu mô tả tiến cứu 56 bệnh nhân (BN) ung thư cổ tử cung (UTCTC) được phẫu thuật có chụp CHT 1.5 Tesla trước mổ và có kết quả giải phẫu bệnh sau mổ tại bệnh viện K.

Kết quả: Tuổi thấp nhất 25, cao nhất 68, trung bình 45,3 ± 10,4. UTBM vảy 76,8%, UTBM tuyến 17,9%. 98,2% UTCTC tăng tín hiệu trên T2WI, 89,3% đồng tín hiệu trên T1WI, 83,9% giảm khuếch tán (tăng tín hiệu) trên DWI (b800), 75,0% ngấm thuốc đối quang từ kém cơ tử cung, 53,6% ngấm đồng nhất. Đánh giá kích thước khối u CHT 1.5T có Acc và PPV 94,6%. Đánh giá xâm lấn âm đạo: Sn 66,7%, Sp 94,6%, Acc 98,2%, PPV 100% và NPV 98,1%. Đánh giá xâm lấn dây chằng rộng: Sn, Sp, Acc, PPV và NPV 100%. Đánh giá xâm lấn thành bên chậu hông : Sp 100%, Acc và NPV 98,2%. Chẩn đoán hạch di căn: Sn 50%, Sp 97,8%, Acc 89,3%, PPV 89,3% và NPV 90,0%. Phân loại GĐ UTCTC CHT 1.5T có Acc và PPV 91,1%.

Kết luận: Hình ảnh UTCTC trên CHT 1.5T có thể quan sát rõ nét trên T2WI, DWI trước tiêm và T1FS sau tiêm thuốc đối quang từ. CHT 1.5T có giá trị cao trong phân loại GĐ. CHT nên được sử dụng thường quy trong chẩn đoán phân loại GĐ UTCTC.
Three Lichen taxa new for Turkey
Authors: Yazici Kenan , Aptroot André
Published: June 2017

Three lichen taxa viz.  Aspicilia asiatica (H. Magn.) Yoshim., Lecanora subcarnea (Sw.) Ach. var. soralifera H. Magn., and Thelidium minutulum Körb. were identified as new to Turkey as a result of a lichenological survey in the Bitlis and Mu? regions Turkey. In addition, Lecanora subcarnea var. soralifera is also new to Asia. A detail taxonomic account, notes on known distribution, substrates, and chemistry under each taxon and comparisons with morphologically similar taxa are furnished under each taxon.Keywords: Ascolichen; Lecanoraceae; Hymenchiaaceae; Verrucariaceae.Bangladesh J. Plant Taxon. 24(1): 8389, 2017 (June)
A Validation of England's Nineteenth Century Tithe Files, Using GIS as a Primary Tool
Authors: Little Malcolm , Peplow Stephen
Published: June 2017

The tithe files contain a large amount of agricultural production data, but have not been much used for econometric analysis. The data is the result of averaging and estimating, thus some doubt has been cast on its accuracy. This article shows that for eight counties in the southwest of England, some data from the tithe files is reasonably reliable and was recorded in a consistent manner. The article demonstrates how tithe files and other data can be geocoded with spatial information so that an analysis using Geographical Information Systems (GIS) may be performed. Three tests are carried out, showing that pastoral rents followed a ‘distance decay’ model; that reported arable yields were consistent with exogenous variables; and that arable rents were set with economic variables in mind.
Hurry Up and Wait: The Nigger of the ‘Narcissus’ and the Maritime in Modernism
Authors: Uphaus Maxwell
Published: June 2017

The burgeoning subfield of literary oceanic studies has largely neglected modernist literature, maintaining that the end of the age of sail in the late nineteenth century also marks an end to maritime literature's substantive cultural role. This essay outlines a way of reading the maritime in modernism through an analysis of the engagement with history and temporality in Joseph Conrad's sea novel The Nigger of the ‘Narcissus’ (1897). The novel depicts the sea as variously an anachronistic sphere left behind by history, an integral foundation to history, an element that eclipses history, and an archive of history's repressed violence. This article traces the interactions of these various views of the sea's relationship to history, highlighting how they are shaped and inflected by the novel's treatment of race. Based on this analysis, it proposes an approach to the sea in modernist literature that focuses on its historiographical rather than social import.
H.D.’s Tapestry: Embroidery, William Morris and The Sword Went Out to Sea
Authors: Anderson Elizabeth
Published: June 2017

This article focuses on the role of embroidery in H.D.’s life and work in the 1940s. Bringing the tropes of tapestry, writing, and spiritualism together gave H.D. a means to explore possibilities for both personal and social healing following the trauma of the war years and to express her hopes for a world without war. Moreover, H.D. used tapestry as a metaphor that allowed her to explore her affiliation to nineteenth-century poets, particularly William Morris, while also enabling the development of her modernist style to a more extreme dynamic of rupture and connection. The article situates H.D.’s embroidery in the context of wider discourses on women's amateur textile craft and Morris's work in textiles and literature, before considering H.D.’s use of tapestry as a creative practice and metaphor in her late novel The Sword Went Out to Sea.
Testing the Isotropy of the Log N–log S Slope for the NVSS Radio Catalog
Authors: Ghosh Shamik , Jain Pankaj
Published: June 2017

The cumulative number count N of sources above a threshold is known to approximately follow a power-law behavior

N
∝

S

−
x

. We study the variation of spectral index x across the sky to look for possible signals of a violation of isotropy. We develop a rigorous algorithm of likelihood maximization to accurately fit for the spectral index. We divide the sky into upper and lower hemispheres for a particular choice of the z axis and determine the error normalized difference between the best fit values of the spectral indices between the two hemispheres. The maximum value of this difference obtained by varying over the z axis provides us with a measure of departure from isotropy. We find that the data support isotropy of the spectral index. We also perform a dipole fit to the spectral index as a function of the angular coordinates. The result is found to be consistent with isotropy.
Double-coronal X-Ray and Microwave Sources Associated with a Magnetic Breakout Solar Eruption
Authors: Chen Yao , Wu Zhao , Liu Wei , Schwartz Richard A. , Zhao Di , Wang Bing , Du Guohui
Published: June 2017

Double-coronal hard X-ray (HXR) sources are believed to be critical observational evidence of bi-directional energy release through magnetic reconnection in large-scale current sheets in solar flares. Here, we present a study on double-coronal sources observed in both HXR and microwave regimes, revealing new characteristics distinct from earlier reports. This event is associated with a footpoint-occulted X1.3-class flare (2014 April 25, starting at 00:17 UT) and a coronal mass ejection that were likely triggered by the magnetic breakout process, with the lower source extending upward from the top of the partially occulted flare loops and the upper source co-incident with rapidly squeezing-in side lobes (at a speed of ∼250 km s−1 on both sides). The upper source can be identified at energies as high as 70–100 keV. The X-ray upper source is characterized by flux curves that differ from those of the lower source, a weak energy dependence of projected centroid altitude above 20 keV, a shorter duration, and an HXR photon spectrum slightly harder than those of the lower source. In addition, the microwave emission at 34 GHz also exhibits a similar double-source structure and the microwave spectra at both sources are in line with gyrosynchrotron emission given by non-thermal energetic electrons. These observations, especially the co-incidence of the very-fast squeezing-in motion of side lobes and the upper source, indicate that the upper source is associated with (and possibly caused by) this fast motion of arcades. This sheds new light on the origin of the corona double-source structure observed in both HXRs and microwaves.
Clinical Alerts to Decrease High-Risk Medication Use in Older Adults
Authors: Lord-Adem Wilhelmina , Brandt Nicole J.
Published: June 2017

High-risk medications (HRMs) account for 14.6% to 54.6% of all medications used in older adults, and have been linked to >50% of adverse drug events (ADEs). HRM-related ADEs lead to increased morbidity and mortality, increased hospital length of stay, and financial costs for patients and health care systems. It has been well documented that incorporating information technology in patient care in the form of clinical alert systems can effectively decrease HRM use and improve patient safety. The current article seeks to identify and discuss clinical alert systems focusing on HRMs, their impact on prescribing for older adults, and challenges to the implementation of electronic decision systems. [
Journal of Gerontological Nursing, 43
(7), 7–12.]
El aeropuerto de Maison-Blanche. Estación terminal
Authors: Lathuilliere Marcel , Di Martino Nicolas
Published: June 2017

Situado en las proximidades de Maison-Blanche, a 25 km de Argel, ha tomado un gran incremento en los últimos diez años, alcanzando un tercer puesto entre los aeródromos franceses, después de Orly y Le Bourget.
Instalación experimental para ensayos de clinkerización
Authors: Arredondo Francisco
Published: June 2017

Entre la escala de laboratorio y la de la planta piloto semi-industrial, instalada en el Instituto, se hacía necesaria una intermedia, que produjera material en cantidad suficiente para los ensayos oportunos, sin que significara un alto consumo de materia prima, combustible, tiempo, etc.
Aspectos biopsicossociais do adoecimento por câncer para familiares de pacientes hospitalizados/Biopsycosocial aspects of cancer for relatives of hospitalized patients
Authors: Serafim Santana Ingrede Tatiane , Dos Santos Ana Cleide Rezende , Farre Anny Giselly Milhome da Costa , Dos Santos Ana Carla Ferreira Silva , Rocha Hertaline Menezes do Nascimento
Published: June 2017

O câncer é uma doença crônica que afeta de forma direta e indireta as atividades de vida do familiar, pela influência dos aspectos biopsicossociais do processo de adoecimento. Nesse sentido, o presente estudo tem como objetivo conhecer os aspectos biopsicossociais do adoecimento por câncer para familiares de pacientes hospitalizados. Trata-se de uma pesquisa descritiva qualitativa, cujos dados foram coletados no período de novembro e dezembro de 2015, por meio de entrevistas, e, em seguida, submetidos à Análise de Conteúdo Temático-Categorial. Os principais sentimentos mencionados pelos familiares foram tristeza, medo, preocupação, choque, aceitação e esperança; a doença provoca mudanças no bem-estar, na vida profissional, sexual e pessoal, além de diminuir a autoestima e a confiança dos familiares; a religiosidade e a família são as principais fontes de força, e todos os familiares compreendem a importância do seu apoio ao paciente. O estudo evidencia que o familiar é acometido por diferentes mudanças nos aspectos biopsicossociais, procurando fontes como a religiosidade para o enfrentamento da doença. Conhecer esses aspectos é fundamental para uma assistência adequada e melhoria da qualidade de vida.
Vivências de Cuidadores Familiares de Pessoas Idosas com Doença de Alzheimer / Experiences of Family Caregivers of Elderly with Alzheimer's Disease
Authors: Faria Erica Beatriz Alves , Scardoelli Márcia Glaciela , Castro Vivian Carla de , Nishida Fernanda Shizue
Published: June 2017

O objetivo do presente estudo foi compreender o processo de vivenciar o cuidado aos idosos com doença de Alzheimer. Tratou-se de uma pesquisa exploratória e descritiva, com abordagem qualitativa. Os sujeitos da pesquisa foram oito cuidadores familiares de pessoas idosas com Alzheimer, residentes nas áreas de abrangência pertencentes a duas Unidades Básicas de Saúde localizadas no município de Maringá- PR. Os dados foram coletados entre julho e agosto de 2015 por meio de entrevista semiestruturada. Da análise temática dos dados emergiram três categorias: “O diagnóstico de doença de Alzheimer no idoso e as mudanças no cotidiano do cuidador familiar”; “Percepção do cuidador familiar sobre as alterações cognitivas e comportamentais na doença de Alzheimer”; “Preocupações vivenciadas pelos cuidadores familiares no dia a dia com o idoso”. Foi constatado que a vivência do processo de adoecimento gera sofrimento, tristeza e insegurança, trazendo grandes mudanças no contexto familiar. O enfermeiro, além da assistência ao idoso com DA, pode oportunizar diálogos e definição conjunta de estratégias de cuidados para a convivência com a doença.
Fatores de Risco Cardiovascular e Medidas Antropométricas em Crianças e Adolescentes / Cardiovascular Risk Factors and Anthropometric Measures in Children and Adolescents
Authors: Moura Jayne Ramos Araujo , Melo Júnior Eugênio Barbosa de , Pimenta Mayara Vidal Torres , Silva Cyléa Abdalla de Miranda , Batista Ana Míria De Oliveira , Silva Ana Roberta Vilarouca da
Published: June 2017

O objetivo do estudo foi analisar a associação entre alterações nas medidas antropométricas e a frequência de fatores de risco cardiovascular em crianças e adolescentes. Estudo transversal, com amostra de 421 crianças e adolescentes. A coleta de dados foi realizada no período de agosto a novembro de 2014, por meio do preenchimento do formulário com informações referentes a identificação, aos aspectos socioeconômicos, às medidas antropométricas, à aferição da pressão arterial e de prática de atividades físicas, além de exames bioquímicos.Os principais resultados encontrados foram: 59,6% eram do sexo feminino, com idade média de 11,4 anos. Aqueles que apresentaram maiores índices de massa corporal e/ou circunferência da cintura alterada tinham mais chances de apresentar pressão arterial sistólica elevada, triglicerídeo elevado e high density lipoproteins – colesterol baixo.Conclui-se que aqueles que estavam acima do peso e/ou com excesso de adiposidade central apresentaram expressivas frequências de fatores de risco, como hipertensão arterial e desordens no perfil lipídico, para o desenvolvimento de doenças cardiovasculares.
Effects of Cutting Speed, Cutting Fluid, and Carbon Fiber Orientation on Cutting of CFRP during Turning
Authors: Anan Ruito , Matsuoka Hironori , Ono Hajime , Ryu Takahiro , Nakae Takashi , Shuto Shuichi , Watanabe Suguru , Sato Yuta
Published: June 2017

This study examined the influence of cutting speed, cutting fluid, and pre-impregnated carbon fiber orientation on tool wear and finished surface roughness during turning of carbon fiber reinforced plastic (CFRP) pipes. In the dry cutting process, the tool wear decreased as the cutting speed was increased. An average cutting speed of 92 m/min or higher was found to be acceptable with respect to tool wear. The use of mineral oil resulted in a reduction of tool wear when compared with that in the case of dry cutting. The tool wear with water was lower than that with mineral oil. It was assumed that cooling by water was more effective than lubrication by mineral oil. The results clearly indicated that the tool wear and the finished surface roughness were affected by the carbon fiber orientation.
Environmental Effect on Short-Beam Composite under Three-Point Bending Test
Authors: Mariam Majid , Afendi M. , Abdul Majid M.S.
Published: June 2017

The effect of moisture, water absorption on a single short span beam of glass fiber reinforced polymer (GFRP) was examined under room temperature, 27°c. The aim of the study is to investigate the mechanical properties of composite under wet condition. The composite were cut into rectangular shape with a dimension of 78 mm long, 26 mm width and 3.5 mm depth. The moisture content of eight specimens was experimentally reduced as the glass fiber content increased. In this investigation, the flexural strength and modulus of composites were determined throughout the three-point bending test. The specimens were rigged up horizontally as supported beams and loaded vertically at the geometric center. Thus, the results were developed into loading versus deflection and relationship for each specimen. The samples were considered to have failed when the curves were in steady decline section. Failure mechanisms were observed in categories; face yield, core yield and fiber tear.
Numerical Validation of Two-Phase Slug Flow and its Liquid Holdup Correlation in Horizontal Pipeline
Authors: Pao William , Sam Ban , Nasif Mohammad Shakir , Norpiah Rohaizad B.M.
Published: June 2017

The transition of one flow regime into another is a very common phenomena in pipeline networks, which can be potentially hazardous for the structural integrity of the pipeline. Literature review showed that there is almost no reported detail investigation of transitional flow whereby the fluid constituents change from one regime to another especially slug transition. Most of the open research papers focused on slug flow regime and its liquid holdup in horizontal pipelines and channels have been carried out on experimental test rigs. The objective of this study is to explore oil-gasoil vapor slug transition and its liquid holdup in a 3.15 inch diameter horizontal straight pipe. The abrupt change in gas/liquid velocities, which causes transition of flow patterns is analyzed using incompressible Volume of Fluid (VOF) method, along with Piecewise Linear Interface Construction (PLIC) technique to capture the sharp front of segregated gas-liquid interface. Slug liquid holdup derived from the present numerical model is compared to existing experimental correlations in the literature.
Investigation on Mixed Oil-Cement for Wellbore Integrity Using Acoustic Velocity
Authors: Ridha Syahrir , Lubis Luluan Almanna , Setiawan Riau Andriana , bin Razif Mohar Javad Mohar
Published: June 2017

Oilwell cementing is part of completing a well prior to production. As a casing is installed after a section of the well is drilled, cement is pumped downhole. Reservoir fluid such as oil which may encroach into the wellbore due to naturally fractured or unconsolidated formation would mix with the cement pumped downhole. Recent studies have shown that the presence of oil affect cement quality to an extent where the cement compressive strength is greatly reduced. Early detection of possible oil contamination into cement may prevent well integrity problem. With intense application of acoustic principle into wellbore, however, not many references available to detect the presence of oil in cement system using this principle. This study investigates whether acoustic waves can detect oil in cement. Class G cement is mixed with both water and brine where crude oil is then added to the mixture. The resulting slurry were cured using High Pressure High Temperature (HPHT) curing chamber at 120°C and 4,000 psi for 24 hours and is then cored into 1-inch cylinder. SonicViewer-SX is used to propagate acoustic waves through the core sample where the transit time is recorded and analyzed. It is found that oil can be detected in cement using acoustic waves since oil-filled samples have slower P-waves and S-waves velocities than cement-filled samples. The case is also proven when water is replaced by brine as the mixing fluid which oil-filled samples have lower P-waves and S-waves velocities to that of cement-filled samples.
Synergistic Effects of Titanium Dioxide and Zinc Borate on Thermal Degradation and Water Resistance of Epoxy Based Intumescent Fire Retardant Coatings
Authors: Amir Norlaili , Ahmad Faiz , Halim Muhammad Hazwan Abdul , Gillani Qandeel Fatima , Megat Yusoff Puteri S.M. , Aziz Hammad , Ahmad Rafiq
Published: June 2017

Abstract. This studies discuss the synergistic effects of titanium dioxide (TiO2) and zinc borate on thermal stability and water resistance of intumescent fire retardant coatings. TiO2 in association with a traditional intumescent flame retardant system which contains ammonium polyphosphate/expandable graphite/melamine/ zinc borate (APP–EG–MEL-ZB) was introduced to epoxy based coatings to improve the fire resistance. The influences of TiO2 on the properties of the coatings were investigated in detail by using Bunsen burner fire test, thermogravimetric analysis (TGA), scanning electron microscope (SEM) and water immersion test. Bunsen burner test revealed that incorporation of titanium dioxide in intumescent formulation reduced the steel substrate temperature from 240 °C to 116 °C. The TGA results proved that addition of TiO2 could enhance the anti-oxidation of the char layers and increase the residue weights of the coatings. The FESEM images demonstrated that addition of TiO2 could improve the foam structure of the char residue. Sea water resistance test demonstrated that the optimum mass % age of TiO2 (6%) exhibited great synergism with natural anti-corrosion agent, zinc borate, and improved corrosion resistance performance of intumescent coating formulations.
Small doubling in ordered groups: generators and structure
Authors: Freiman Gregory A. , Herzog Marcel , Longobardi Patrizia , Maj Mercede , Plagne Alain , Stanchescu Yonutz V.
Published: June 2017

We prove several new results on the structure of the subgroup generated by a small doubling subset of an ordered group, abelian or not. We obtain precise results generalizing Freiman’s

3k-3

and

3k-2

theorems in the integers and several further generalizations.
Tillage and Nitrogen Fertilization Effect on Wheat Yield, and Soil Organic Carbon and Total Nitrogen
Authors: Iqbal Muhammad , Khan Abdul Ghaffar , Mukhtar Rashid , Hussain Sajid
Published: June 2017

Carbon sequestration and increases in soil organic matter have direct positive impacts on soil quality and fertility. This two-year study was conducted to evaluate effect of tillage (zero, minimum, conventional and deep tillage) and nitrogen fertilizer (N @ 0, 130, 160 and 190 kg ha-1) on wheat yield, carbon and nitrogen sequestration capacity, and soil organic carbon and nitrogen concentrations. The results show that tillage practices had a statistically significant effect on soil organic carbon and total nitrogen at different soil depths; soil organic carbon decreased with depth. Zero tillage treatments had a highly significant soil organic carbon than those of minimum, conventional and deep tillage treatments. Zero tillage treatments had higher soil organic carbon storage in the cultivated layer (0-15 cm) than the tillage treatments.
Meteorological context of the onset and end of the rainy season in Central Amazonia during the GoAmazon2014/5
Authors: Marengo Jose A. , Fisch Gilberto F. , Alves Lincoln M. , Sousa Natanael V. , Fu Rong , Zhuang Yizhou
Published: June 2017

Abstract. The onset and demise of the rainy season in Amazonia are assessed in this study using meteorological data from the GoAmazon experiment, with a focus on the 2014–2015 rainy season. In addition, global reanalyses are also used to identify changes in circulation leading to the establishment of the rainy season in the region. Our results show that the onset occurred in January 2015, 2–3 pentads later than normal, and the rainy season during the austral summer of 2015 contained several periods with consecutive dry days in both Manacapuru and Manaus, which are not common for the wet season, and resulted in below-normal precipitation. The onset of the rainy season has been strongly associated with changes in large-scale weather conditions in the region due to the effect of the Madden–Julian Oscillation (MJO). Regional thermodynamic indices and the height of the boundary layer did not present a significant difference between the onset and demise of the wet season of 2015. This suggests that local changes, such as those in the regional thermodynamic characteristics, may not have influenced its onset. Thus, variability of the large-scale circulation was responsible for regional convection and rainfall changes in Amazonia during the austral summer of 2014–2015.
Real time analysis of insoluble particles in glacial ice using single particle mass spectrometry
Authors: Osman Matthew , Zawadowicz Maria A. , Das Sarah B. , Cziczo Daniel J.
Published: June 2017

Abstract. Insoluble aerosol particles trapped in glacial ice provide insight into past climates, but analysis requires information on climatically-relevant particle properties, such as size, abundance, and internal mixing. We present a new analytical method using a time-of-flight single particle mass spectrometer (SPMS) to determine the composition and size of insoluble particles in glacial ice over an aerodynamic size range of ~ 0.2–3.0 µm diameter. Using samples from two Greenland ice cores, we developed a procedure to nebulize insoluble particles suspended in melted ice, evaporate condensed liquid from those particles, and transport them to the SPMS for analysis. We further determined size-dependent extraction and instrument transmission efficiencies to investigate particle-class specific mass concentrations. We find SPMS can be used to provide constraints on the aerodynamic size, composition, and relative abundance of most insoluble particulate classes in ice core samples. We describe the importance of post-aqueous processing to particles, a process which occurs due to nebulization of aerosols from an aqueous suspension of originally soluble and insoluble aerosol components. This study represents an initial attempt to use SPMS as an emerging technique for the study of insoluble particulates in ice cores.
A mechanistic model of an upper bound on oceanic carbon export as a function of mixed layer depth and temperature
Authors: Li Zuchuan , Cassar Nicolas
Published: June 2017

Abstract. Export production reflects the amount of organic matter transferred from the surface ocean to depth through biological processes. This export is in great part controlled by nutrient and light availability, which are conditioned by mixed layer depth (MLD). In this study, building on Sverdrup’s critical depth hypothesis, we derive a mechanistic model of an upper bound on carbon export based on the metabolic balance between photosynthesis and respiration as a function of MLD and temperature. We find that the upper bound is a positively skewed bell-shaped function of MLD. Specifically, the upper bound increases with deepening mixed layers down to a critical depth, beyond which a long tail of decreasing carbon export is associated with increasing heterotrophic activity and decreasing light availability. We also show that in cold regions the upper bound on carbon export decreases with increasing temperature when mixed layers are deep, but increases with temperature when mixed layers are shallow. A metaanalysis shows that our model envelopes field estimates of carbon export from the mixed layer. When compared to satellite export production estimates, our model indicates that export production in some regions of the Southern Ocean, most particularly the Subantarctic Zone, is likely limited by light for a significant portion of the growing season.
Estimating global cropland production from 1961 to 2010
Authors: Han Pengfei , Zeng Ning , Zhao Fang , Lin Xiaohui
Published: June 2017

Abstract. Global cropland net primary production (NPP) has tripled over the last fifty years, contributing 17–45 % to the increase of global atmospheric CO2 seasonal amplitude. Although many regional-scale comparisons have been made between statistical data and modelling results, long-term national comparisons across global croplands are scarce due to the lack of detailed spatial-temporal management data. Here, we conducted a simulation study of global cropland NPP from 1961 to 2010 using a process-based model called VEGAS and compared the results with Food and Agriculture Organization of the United Nations (FAO) statistical data on both continental and country scales. According to the FAO data, the global cropland NPP was 1.3, 1.8, 2.2, 2.6, 3.0 and 3.6 PgC yr−1 in the 1960s, 1970s, 1980s, 1990s, 2000s and 2010s, respectively. The VEGAS model captured these major trends at global and continental scales. The NPP increased most notably in the U.S. Midwest, Western Europe and the North China Plain, and increased modestly in Africa and Oceania. However, significant biases remained in some regions such as Africa and Oceania, especially in temporal evolution. This finding is not surprising as VEGAS is the first global carbon cycle model with full parameterization representing the Green Revolution. To improve model performance for different major regions, we modified the default values of management intensity associated with the agricultural Green Revolution differences across various regions to better match the FAO statistical data at the continental level and for selected countries. Across all the selected countries, the updated results reduced the root mean square error (RMSE) from 19.0 to 10.5 TgC yr−1 (~ 45 % decrease). The results suggest that these regional differences in model parameterization are due to differences in social-economic development. To better explain the past changes and predict the future trends, it is important to calibrate key parameters at regional scales and develop datasets for land management history.
Reavaliação da Obra de José Rodrigues Miguéis, Léah e Outras Histórias: Contos de Tradição e de Vivências
Authors: Colom Jiménez María
Published: June 2017

En Léah e Outras Histórias, José Rodrigues Miguéis hace una crítica severa analizando la situación político-social del Portugal del siglo XX. Queda en evidencia que su exilio a los Estados Unidos en 1935, durante la dictadura de Salazar, no lo separó de la problemática portuguesa, sino que por el contrario, hizo que sus inquietudes se hicieran más latentes como escritor, mientras comparaba la democracia americana a la situación política en Portugal. En los cuentos de su colección Léah e Outras Histórias, Miguéis examina los diferentes choques culturales de sus protagonistas portugueses y los personajes que los rodean, reflejando estas diferencias en experiencias cotidianas, tales como enamorarse, ir al barbero, pasear por una gran avenida de Nueva York, entablar conversaciones con vecinos u otros inmigrantes. Este estudio comenzará haciendo una pequeña introducción de la evolución del cuento como género narrativo en la historia de la literatura portuguesa. Se procederá a hacer un análisis de las narrativas en Leah e Outras Histórias como siendo reflejo de la complicada situación causada por las diferencias culturales vividas por el inmigrante o el exiliado. Se analizaran los enfrentamientos sociales o lingüísticos a los que se ven expuestos los individuos exiliados y cuáles son los mecanismos literarios utilizados por Miguéis para denunciar los distintos traumas. Veremos como el exilio físico de ciertos personajes se convierte también en exilio psicológico por la dificultad de adaptación a lo desconocido. Examinaremos como la tradición cultural portuguesa se contrasta con nuevas realidades sociales y como los problemas de interacción cultural son argumentados en estas narrativas. Mediante la creación de personajes complejos, José Rodrigues Miguéis es capaz de retratarnos de manera realista, los conflictos internos causados por la experiencia del exilio, y demuestra con ironía y sutileza como estos conflictos individuales son en el fondo universales.
La traducción historiográfica en el Cuatrocientos entre Italia y Castilla. Notas sobre la versión decembriana de la Primera Guerra Púnica y su traducción castellana
Authors: González Gómez Jaime
Published: June 2017

En el presente trabajo mostramos un panorama de conjunto del romanceamiento, conservado en dos manuscritos, que Pier Candido Decembrio realizó en Milán hacia 1438 de la versión latina bruniana de Polibio Commentarii tres de Primo Bello Punico, así como de la traducción castellana que se realizó a partir de uno de ellos, transmitida también en dos testimonios. Ponemos en relación estos cuatro manuscritos por primera vez y sentamos las bases para un futuro análisis filológico y traductológico más amplio.
La aventura sagrada. Arquitectura del viaje iniciático en La demanda del Santo Graal
Authors: López Sánchez Marco Antonio
Published: June 2017

Este trabajo explora la arquitectura de la Demanda del Santo Graal entendida como un viaje de iniciación, a través de una visión que toma por centro las Estructuras antropológicas del imaginario de Gilbert Durand. Con ello se pretende lograr un estudio hermenéutico que muestre no solamente el trayecto antropológico entre un autor anónimo y las figuras culturales de su tiempo sino, sobre todo, una nueva herramienta que ayude a entender mejor el profundo y rico simbolismo del que forma parte esta obra medieval, inmersa dentro de un gigantesco universo artúrico. También está presente el trayecto del héroe de Joseph Campbell, así como las figuras del destino analizadas por Victoria Cirlot.
De Verdaguer al conde de Cedillo. Ocho cartas inéditas
Authors: Garolera Narcís
Published: June 2017

El conde de Cedillo –Jerónimo López de Ayala– tradujo al castellano el poema Canigó, de Jacint Verdaguer, y la publicó en Madrid en 1898. Durante el periodo de la traducción de la obra –entre 1896 y 1898– el poeta catalán mantuvo correspondencia con su traductor, que tuvo continuidad a lo largo de los tres años siguientes (hasta 1901, pocos meses antes de la muerte del autor). En este artículo se publican ocho cartas inéditas, que completan la correspondencia del poeta y su traductor (cinco fueron publicadas en el Epistolari de Jacint Verdaguer).
Carbó, Ferran, Gregori, Carme i R. X. Rosselló (eds.), La ironia en les literatures occidentals des de l’inici de segle fins a 1939, Barcelona, Publicacions de l’Abadia de Montserrat, 2016, 552 pp.
Authors: Ferrando Mireia
Published: June 2017

Carbó, Ferran, Gregori, Carme i R. X. Rosselló (eds.), La ironia en les literatures occidentals des de l'inici de segle fins a 1939,
Losada Soler, Elena, y Katarzyna Paszkiewicz (eds.) (2015): Tras la pista: narrativa criminal escrita por mujeres. Barcelona: Icaria Editorial.
Authors: Rivero Grandoso Javier
Published: June 2017

Losada Soler, Elena, y Katarzyna Paszkiewicz (eds.) (2015): Tras la pista: narrativa criminal escrita por mujeres
LABORATORY-SCALE REACTION INJECTION MOLDING OF POLY(CAPROLACTONE) ELASTOMERS FOR RAPID PROTOTYPING OF STIMULI-RESPONSIVE THERMOSETS
Authors: Meng Yuan , Huang Xin , Fitzgerald Cynthia , Lee Hojun , Yang Jeh-Chang , Anthamatten Mitchell
Published: June 2017

Semicrystalline polymer networks offer valuable shape-memory and shape-shifting properties; however, material processing and scale-up remain major challenges. A laboratory-scale reaction injection molding (RIM) apparatus and methodology are described to mold and cure urethane linked poly(caprolactone) networks from commercially available polyols and polyisocyanate. The highly customized RIM system is capable of making small shot sizes (∼39 g) at precise stoichiometric ratios and forming elastomers with low run-to-run variation of mechanical properties. Experiments conducted with a dye in one feed stream enable evaluation of mixing efficacy, and component mixing is substantially improved by recirculating reagents at higher pressures. Networks prepared with excess isocyanate exhibited higher modulus, which is most likely due to the formation of allophanates.
An Explicit Pragmatic Approach to Integrative Data Analysis Strategies for Mixed Methods Research
Authors: Chan Mei Lan
Published: June 2017

Mixed methods research is becoming an important methodology for the investigation of various topics in applied linguistics. However, data integration remains a challenge for mixed methods researchers and thus needs further development. This study discusses the integrative data analysis strategies used in an embedded mixed methods study in applied linguistics, illustrated through two phases of the study, and the way in which the adoption of a pragmatic approach explicitly aids data integration by abductive reflection on the knowledge acquired. This study investigated the language learning strategies used by English as a Foreign Language nursing students in higher education in Macao, and the effectiveness of the students’ learning outcomes as a result of strategy instruction. Six integrative data analysis strategies are discussed, and the explicit pragmatic approach that guided the exploratory sequential design sheds further light on the integrative data analysis.
Sarcoidosis and antiphospholipid syndrome: A rare association
Authors: Carvalho Rosa , Gomes Vânia , Pereira Raquel , Moutinho Adelaide , Knoch Anna , Rodrigues Céu , Capela Carlos
Published: June 2017

Sarcoidosis is a systemic inflammatory disorder of unknown cause that is characterized by the granulomatous inflammation of various organs. Antiphospholipid syndrome (APS) is an autoimmune condition defined by persistently positive antiphospholipid antibodies as well as recurrent arterial or venous thromboses and pregnancy complications. Several autoimmune diseases have been described in patients with sarcoidosis, however, a possible correlation between sarcoidosis and APS remains unknown. We present the fifth reported case in the literature.
Emergency Department wait time sharing: Do patients contribute to efficiency?
Authors: McDougal, Jr Tom R. , O'Connor Stephen J. , Landry Amy Y. , Hearld Kristine R.
Published: June 2017

Objective: Inefficiency commonly results in overcrowding of the Emergency Department (ED) and is a problem for many hospitals. When a condition of overcrowding exists, it is often associated with lower patient satisfaction, lower care quality, and decreased financial position of the hospital. To improve patient throughput efficiency, hospitals use a variety of strategies including posting ED wait times on the hospital website and the use of ED reservation systems. This study investigates these two hospital strategies used to inform patients of anticipated wait times in the ED and their associations with patient throughput efficiency.Methods: The study employs bivariate and Ordinary Least Squares (OLS) regression models to explore the associations between ED efficiency, measured by time spent in the ED, and ED wait times posted on the hospital website (Wait Times on Website) and ED time efficiency and the use of ED reservation systems. The sample includes all 176 acute care hospitals with an ED located in Florida.Results: The results of this study support that posting ED wait times has a statistically significant association with time spent in the ED; however, we did not find an association between the use of a reservation system and time in the ED. Furthermore, the control variables of hospital licensed bed size, metropolitan location, percent of population without health insurance, and percent of population Medicaid eligible were found to have associations with time spent in the ED.Conclusions: This study supports that hospitals should inform patients of anticipated ED wait times. Methods to share wait times should include posting on the hospital website, billboards, or other means to increase the likelihood of informed patients. With anticipated wait time information, the patient has the opportunity to engage in rational decision making that will positively affect ED efficiency. Healthcare leaders, including hospital administrators and ED managers, are encouraged to identify and implement better ways to inform patients of hospital performance metrics to create the opportunity for greater patient decision engagement.