bluuebunny/crossref_metadata_2025_split huggingface dataset:
Applying a Numerical Model of the Continuous Steel Casting Process to Control the Length of the Liquid Core in the Strand
Authors: Miłkowska-Piszczek K. , Falkus J. 
Published: April 2015

Abstract
This paper presents development and the application of a numerical model of the continuous steel casting process to optimise the strand solidification area. The design of the numerical model of the steel continuous casting process was presented and which was developed based on the actual dimensions of the slab continuous casting machine in ArcelorMittal Poland Unit in Kraków. The S235 steel grade and the cast strand format of 220×1280 mm were selected for the tests. Three strand casting speeds were analysed: 0.6, 0.8 and 1 m min-1. An algorithm was presented, allowing the calculation of the heat transfer coefficient values for the secondary cooling zone. In order to verify the results of numerical simulations, additional temperature measurements of the strand surface within the secondary cooling chamber were made. The ProCAST software was used to construct the numerical model of continuous casting of steel.
Comprehensive Assessment of Polymeric Materials for Foundry Tooling Used in Microwave Field
Authors: Stachowicz M. , Opyd B. , Granat K. 
Published: April 2015

AbstractThe paper presents a research on abrasion resistance of selected construction materials designed for foundry tooling applied in the innovative microwave heating process of moulding and core sands. One of the main selection criteria of the materials for foundry tooling, in particular for models, moulding boards, moulding boxes and core boxes, is their good abrasive wear resistance. Usability of the selected polymeric materials, designed for foundry tooling used in electromagnetic field, is decided also by other evaluation criteria determined in the examinations, like thermal resistance and electrical properties. Abrasion resistance of the selected materials was determined for three grades of the moulding sand matrixes. Combined analysis of the determined abrasion resistance, considering also electrical properties and thermal resistance of the foundry tooling materials, characterising their usability for microwave heating of moulding and core sands, will make possible their systemising with respect to effectiveness and efficiency of the heating process, taking under consideration durability of such foundry tooling to be used in industrial conditions.
Forming of Hollow Shaft Forging From Titanium Alloy Ti6Al4V by Means of Rotary Compression
Authors: Tomczak J. , Pater Z. , Bulzak T. 
Published: April 2015

Abstract
This paper presents chosen results of theoretical-experimental works concerning forming of hollow shafts forgings from titanium alloys, which are applied in aviation industry. At the first stage of conducted analysis, the forging forming process was modeled by means of finite element method. Calculations were made using software Simufact Forming. On the basis of performed simulations optimal parameters of rotary compression process were determined. Next, experimental tests of forging forming in laboratory conditions were made. For the research needs, a forging aggregate, designed by the Authors, was used. Conducted research works confirmed the possibility of metal forming (by means of rotary compression) of hollow shafts from hard workable titanium alloys. Numerous advantages of rotary compression process, make it attractive both for low series production (aircraft industry) and for mass production (automotive industry).
The Phase Transformations in Hypoeutectoid Steels Mn-Cr-Ni
Authors: RoŻniata E. , Dziurka R. 
Published: April 2015

Abstract
The results of a microstructure and hardness investigations of the hypoeutectoid steels Mn-Cr-Ni, imitating by its chemical composition toughening steels, are presented in the paper. The analysis of the kinetics of phase transformations of undercooled austenite of steels containing different amounts of alloying elements in their chemical composition, constitutes the aim of investigations.
Metallographic examinations were carried out on a Axiovert 200 MAT light microscope. Sections were etched with a 3% HNO3 solution in C2H5OH.
Dilatometric tests were performed using L78 R.I.T.A dilatometer. Using dilatometer the changes of elongation (Δl) of the samples with dimensions Ø 3×10 mm as a function of temperature (T) were registered. Obtained heating curves were used to precisely determine the critical temperatures (critical points) for the tested steels, while the differentiation of obtained cooling curves allowed to precisely define the temperatures of the beginning and the end of particular transition to draw CCT diagrams.
Four CCT diagrams worked out for the tested hypoeutectoid steels (for quenching of steel) are - in the majority of steels - separated by the undercooled austenitic range and are of the letter „C” shape. However, for steels with Mn and Ni the separation of diffusive transformations from the bainitic transformation by the stable austenitic range is not observed. Hardenability of four investigated hypoeutectoid steels is similar, but still not high. To obtain martensite in the microstructure of these steels, it is necessary to apply the cooling rate higher than 25°C/s. The exception constitutes the Mn - Ni steel, in which only cooling with the rate higher than 50°C/s allows to achieve the martensitic microstructure and to avoid diffusive transformations (pearlitic and ferritic).
Approaches to Acoustic and Visual Underwater Sensing
Authors: Woock Philipp , Stephan Thomas , Beyerer Jürgen 
Published: April 2015

Abstract
This paper presents an overview of the challenges encountered in underwater sensing. Two state-of-the-art approaches are presented
dealing with optic and acoustic sensor data processing. Employing suitable methods for the different modalities enables fusion of the
information contained in the optic radiative transfer and acoustic reflectivity.
Towards Underwater Inspection Using AUVs
Authors: Kalwa Jörg 
Published: April 2015

Abstract
AUVs – Autonomous Underwater Vehicles have reached a state of maturity that allows bringing them into applications beyond
research. Still being a new “toy” in the toolbox for offshore work the market is somewhat reluctant to employ these robots due to
missing field prove. This paper gives an overview about the state of the art of applications and technology and finalizes in a recent
example, dmonstrating autonomy and robustness.
On the symplectic eightfold associated to a Pfaffian cubic fourfold
Authors: Addington Nicolas , Lehn Manfred 
Published: April 2015

Abstract
We show that the irreducible holomorphic symplectic eightfold Z associated to a cubic fourfold Y not containing a plane is deformation-equivalent to the Hilbert scheme of four points on a K3 surface. We do this by constructing for a generic Pfaffian cubic Y a birational map

Z
→

Hilb
4

⁡

(
X
)

Z\to\operatorname{Hilb}^{4}(X)

, where X is the K3 surface associated to Y by Beauville and Donagi. We interpret Z as a moduli space of complexes on X and observe that at some point of Z, hence on a Zariski open subset, the complex is just the ideal sheaf of four points. This note is an appendix to
http://dx.doi.org/10.1515/crelle-2014-0144.
Regularity and Bernstein-type results for nonlocal minimal surfaces
Authors: Figalli Alessio , Valdinoci Enrico 
Published: April 2015

Abstract
We prove that, in every dimension, Lipschitz nonlocal minimal surfaces are smooth.
Also, we extend to the nonlocal setting a famous theorem of De Giorgi [6] stating that the validity of Bernstein’s theorem in dimension

n
+
1

{n+1}

is a consequence of the nonexistence of n-dimensional singular minimal cones in

ℝ
n

{\mathbb{R}^{n}}

.
A Triple-Band Monopole Planar Antenna for WLAN and WiMAX Applications
Authors: Yang Xiaolin , Liu Xuelin , Song Chunyang 
Published: April 2015

Abstract
In this letter, a compact monopole planar antenna with inverted F- and L-shaped strips is presented for WLAN and WiMAX applications. By adjusting the geometries and the sizes of the strips, the proposed antenna can achieve triple-band performance covering three separated impedance bandwidths of 300 MHz (2.2–2.5 GHz), 400 MHz (3.3–3.8 GHz), and 800 MHz (5.1–5.9 GHz), which are well applied for both 2.4/5.2/5.8-GHz WLAN bands and 3.5/5.5-GHz WiMAX bands. The overall dimension of the proposed antenna can reach 20 × 25.5 mm2. Measured S11 and radiation patterns show good agreement with the simulated ones.
Solution composition and particle size effects on the dissolution and
solubility of a ThO2 microstructural analogue for UO2
matrix of nuclear fuel
Authors: Myllykylä Emmi , Lavonen Tiina , Stennett Martin , Corkhill Claire , Ollila Kaija , Hyatt Neil 
Published: April 2015

Abstract
The objective of this study was to investigate the dissolution rate of ThO2 which was synthesised to approximate, as closely
as possible, the microstructure of UO2 in a nuclear fuel matrix. The optimal sintering temperature for ThO2 pellets
was found to be 1750 ℃, which produced pellets with a microstructure similar to UO2 nuclear fuel pellets,
with randomly oriented grains ranging in size from 10 to 30 μm. Dissolution was conducted using ThO2
particles of different size fractions (80 to 160 μm and 2 to 4 mm) in the presence and absence of
carbonate, in solutions with pH from 2 to 8 and at 80 ℃. Dissolution rates were calculated from Th released from the
solid phase to solution. Particles of ThO2 were also leached with 1 M HNO3 at 80 ℃ in
order to investigate the morphological changes at the particle surfaces. The concentration of Th was found to be
≥ 10
–9 mol/L at pH ≤ 4, lower than the theoretical solubility of crystalline ThO2. At higher pH values, from
4 to 8, the measured concentrations (10−10 to 10
–12 mol/L) were between the theoretical solubility of ThO2 and
Th(OH)4. Grain boundaries were shown to exert an influence on the dissolution of ThO2 particles. Using high
resolution aqueous solution analysis, these data presented here extend the current understanding of Th solubility in solution.
Las categorías de sindéresis y prudencia en el pensamiento de Bartolomé de Las Casas
Authors: Krupecka Iwona 
Published: April 2015

RESUMENBartolomé de Las Casas es uno de los más reconocidos patridiarios de la idea del diálogo intercultural. En esta ponencia intento analizar cómo Las Casas pudo introducir en su pensamiento tanto el nivel de lo universal – y de ese modo hizo posible el mismo diálogo – como el de lo particular en su dimensión del contexto cultural irreductible. Para lograr esta visión compleja del diálogo Las Casas evocó varios conceptos pertenecientes ala tradición escolástica: la sindéresis, ley natural oprudencia, pero redefiniendo el etapa entre el momento del reconocimiento intuitivo de los principios y el del jucio de la conciencia de la manera que deje de constituir una esfera de la ciencia y, por lo tanto, de la dialéctica y verdad. Al contrario, Las Casas lo muestra como un etapa de la prudencia, es decir, de las creencias probables, relativizadas al contexto social y cultural y por eso relacionado con retórica y razones pragmáticas.
(Nie)aktualność koncepcji człowieka José Ortegi y Gasseta
Authors: Mordka Cezary 
Published: April 2015

ABSTRAKTAutor koncentruje się na ogólnym przedstawieniu poglądów antropologicznych Ortegi y Gasseta, skupiając się przede wszystkim na ich możliwej aktualności. Człowiek, według Ortegi, to byt świadomy, odnoszący się określająco do otoczenia. Transcenduje on swoje biologiczne uposażenie dzięki możliwości chwilowego wykroczenia poza swą aktualną sytuacyjność. Dzięki tej zdolności (wykraczania) nie dąży tylko do realizacji biologicznych imperatywów, lecz realizuje życie jako wymyślony przez siebie projekt − dobrobyt. Takie ujęcie człowieka autor artykułu uznaje za niezwykle aktualne dla współczesnego myślenia na temat kondycji ludzkiej. Ortega rozumie człowieka jako pewną żyjącą monadę, w której można wyróżnić ciało, żywotność, duszę, ducha i „ja”. Kategorie „żywotności” czy „duszy” należą do słownika dzisiaj już nieużywanego, choć można je zidentyfikować z byciem żywym czy psychiką. Najwięcej kłopotów rodzi pojęcie „ja”, które zgodnie z konsekwencją poglądów Ortegi albo jest niezrozumiałe (niewyrażalne), albo nie jest „ja”. Problematyczne ze względu na uzasadnienie ich przyjęcia są też w antropologii Ortegi kategorie „przeznaczenia” czy „powołania”, a wraz z przyjętą przez hiszpańskiego filozofa „przypadkowością” bytu ludzkiego, ujawniają fundamentalną sprzeczność w jego antropologii.
“An Authentic Record of My Race”: Exploring the Popular Narratives of African American Religion in the Music of Duke Ellington
Authors: Booker Vaughn 
Published: April 2015

AbstractEdward Kennedy “Duke” Ellington (1899–1974) emerged within the jazz profession as a prominent exponent of Harlem Renaissance racial uplift ideals about incorporating African American culture into artistic production. Formed in the early twentieth century's middle-class black Protestant culture but not a churchgoer in adulthood, Ellington conveyed a nostalgic appreciation of African American Christianity whenever hewrote music to chronicle African American history. This prominent jazz musician's religious nostalgia resulted in compositions that conveyed to a broader American audience a portrait of African American religiosity that was constantly “classical” and static—not quite primitive, but never appreciated as a modern aspect of black culture.This article examines several Ellington compositions from the late 1920s through the 1960s that exemplify his deployment of popular representations of African American religious belief and practice. Through the short filmBlack and Tanin the 1920s, the satirical popular song “Is That Religion?” in the 1930s, the long-form symphonic movementBlack, Brown and Beigein the 1940s, the lyricism of “Come Sunday” in the 1950s, and the dramatic prose of “My People” in the 1960s, Ellington attempted to capture a portrait of black religious practice without recognition of contemporaneous developments in black Protestant Christianity in the twentieth century's middle decades. Although existing Ellington scholarship has covered his “Sacred Concerts” in the 1960s and 1970s, this article engages themes and representations in Ellington's work prefiguring the religious jazz that became popular with white liberal Protestants in America and Europe. This discussion of religious narratives in Ellington's compositions affords an opportunity to reflect upon the (un)intended consequences of progressive, sympathetic cultural production, particularly on the part of prominent African American historical figures in their time. Moreover, this article attempts to locate the jazz profession as a critical site for the examination of racial and religious representation in African American religious history.
Neurodevelopmental Outcomes After Cardiac Surgery in Infancy
Authors: Gaynor J. William , Stopp Christian , Wypij David , Andropoulos Dean B. , Atallah Joseph , Atz Andrew M. , Beca John , Donofrio Mary T. , Duncan Kim , Ghanayem Nancy S. , Goldberg Caren S. , Hövels-Gürich Hedwig , Ichida Fukiko , Jacobs Jeffrey P. , Justo Robert , Latal Beatrice , Li Jennifer S. , Mahle William T. , McQuillen Patrick S. , Menon Shaji C. , Pemberton Victoria L. , Pike Nancy A. , Pizarro Christian , Shekerdemian Lara S. , Synnes Anne , Williams Ismee , Bellinger David C. , Newburger Jane W. ,   for the International Cardiac Collaborative on Neurodevelopment (ICCON) Investigators
Published: April 2015

BACKGROUND:
Neurodevelopmental disability is the most common complication for survivors of surgery for congenital heart disease (CHD).

METHODS:
We analyzed individual participant data from studies of children evaluated with the Bayley Scales of Infant Development, second edition, after cardiac surgery between 1996 and 2009. The primary outcome was Psychomotor Development Index (PDI), and the secondary outcome was Mental Development Index (MDI).

RESULTS:
Among 1770 subjects from 22 institutions, assessed at age 14.5 ± 3.7 months, PDIs and MDIs (77.6 ± 18.8 and 88.2 ± 16.7, respectively) were lower than normative means (each P &lt; .001). Later calendar year of birth was associated with an increased proportion of high-risk infants (complexity of CHD and prevalence of genetic/extracardiac anomalies). After adjustment for center and type of CHD, later year of birth was not significantly associated with better PDI or MDI. Risk factors for lower PDI were lower birth weight, white race, and presence of a genetic/extracardiac anomaly (all P ≤ .01). After adjustment for these factors, PDIs improved over time (0.39 points/year, 95% confidence interval 0.01 to 0.78; P = .045). Risk factors for lower MDI were lower birth weight, male gender, less maternal education, and presence of a genetic/extracardiac anomaly (all P &lt; .001). After adjustment for these factors, MDIs improved over time (0.38 points/year, 95% confidence interval 0.05 to 0.71; P = .02).

CONCLUSIONS:
Early neurodevelopmental outcomes for survivors of cardiac surgery in infancy have improved modestly over time, but only after adjustment for innate patient risk factors. As more high-risk CHD infants undergo cardiac surgery and survive, a growing population will require significant societal resources.
First Use of a Serogroup B Meningococcal Vaccine in the US in Response to a University Outbreak
Authors: McNamara Lucy A. , Shumate Alice M. , Johnsen Peter , MacNeil Jessica R. , Patel Manisha , Bhavsar Tina , Cohn Amanda C. , Dinitz-Sklar Jill , Duffy Jonathan , Finnie Janet , Garon Denise , Hary Robert , Hu Fang , Kamiya Hajime , Kim Hye-Joo , Kolligian John , Neglia Janet , Oakley Judith , Wagner Jacqueline , Wagner Kathy , Wang Xin , Yu Yon , Montana Barbara , Tan Christina , Izzo Robin , Clark Thomas A. 
Published: April 2015

BACKGROUND:
In 2013–2014, an outbreak of serogroup B meningococcal disease occurred among persons linked to a New Jersey university (University A). In the absence of a licensed serogroup B meningococcal (MenB) vaccine in the United States, the Food and Drug Administration authorized use of an investigational MenB vaccine to control the outbreak. An investigation of the outbreak and response was undertaken to determine the population at risk and assess vaccination coverage.

METHODS:
The epidemiologic investigation relied on compilation and review of case and population data, laboratory typing of meningococcal isolates, and unstructured interviews with university staff. Vaccination coverage data were collected during the vaccination campaign held under an expanded-access Investigational New Drug protocol.

RESULTS:
Between March 25, 2013, and March 10, 2014, 9 cases of serogroup B meningococcal disease occurred in persons linked to University A. Laboratory typing results were identical for all 8 isolates available. Through May 14, 2014, 89.1% coverage with the 2-dose vaccination series was achieved in the target population. From the initiation of MenB vaccination through February 1, 2015, no additional cases of serogroup B meningococcal disease occurred in University A students. However, the ninth case occurred in March 2014 in an unvaccinated close contact of University A students.

CONCLUSIONS:
No serogroup B meningococcal disease cases occurred in persons who received 1 or more doses of 4CMenB vaccine, suggesting 4CMenB may have protected vaccinated individuals from disease. However, the ninth case demonstrates that carriage of serogroup B Neisseria meningitidis among vaccinated persons was not eliminated.
Geographic distribution of the Pygmy Squirrel Sciurillus pusillus (É. Geoffroy-St.-Hilaire, 1803) (Rodentia: Sciuridae) in the northwestern Amazonia, southern Colombia
Authors: Calderón-Capote María C. , Díaz-Nieto Juan F. , López-Arévalo Hugo Fernando 
Published: April 2015

We evaluated the occurrence of Sciurillus pusillus in Colombia and present the first confirmed records of the species in the country based on material deposited at Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Villa de Leyva (IAvH, former INDERENA). The mentioned material was collected in two localities from vicinities of town La Chorrera, Igara-Paraná River, Amazonas Department of Colombia. Additionally, we provide a description of the baculum from one of the specimens herein recorded from Colombia.
Photoelectrochemical Properties of Alkali-treated Sodium Titanate Nanorods
Authors: Kim Mingu , Choi Gwanghyo , Yoo Daeheung , Lee Kwangmin 
Published: April 2015

ABSTRACTThe band gap energy of the TiO2 photocatalytic is high at 3.2 eV. Ultraviolet (UV) light irradiation (<388nm) is required for the photocatalytic application. The lowering the band gap energy of TiO2 and enlarging light absorbing area are effective ways to enhance the efficiency of photocatalytic activity. Furthermore, the morphology and crystal structure of nanosized TiO2 considerably influences its photocatalytic behavior.In this study, sodium titanate nanorods were formed using an alkali-treatment and were heat treated at different temperatures. The photoelectrochemical properties of sodium titanate nanorods was measured as a function of heat treatment temperature. The nanorods were prepared on the surface of Ti disk with a diameter of 15mm and a thickness of 3mm. Ti disk was immersed in 5 M NaOH aqueous solution at a temperature of 60 °C for 24 h. Morphology of sodium titanate nanorods was observed using FE-SEM. Crystal structure of sodium titanate nanorods was analyzed using X-ray diffractometer. Photoluminescence (PL) and electrochemical impedance spectroscopy (EIS) was used to evaluate photoelectrochemical properties of sodium titanate nanorods. The thin amorphous sodium titanate layer was formed during alkali-treatment. The sodium titanate layer was changed to nanorods after heat treatment at a temperature of 700 °C. The thickness and length of sodium titanate nanorods obtained at 700 °C were around 100 nm and 1μm, respectively. The crystal structure of sodium titanate was identified with Na2Ti6O13. Above 900 °C, the morphology of nanorods changed to agglomerated shape and the thickness of nanorods increased to 1 μm. The lowest value of PL was obtained at a temperature of 700 °C, while nonalkali treated specimen showed the highest value of PL. EIS revealed that polarization resistance at interface between sodium titanate nanorods and electrolyte was increased with increasing heat treatment temperature.