bluuebunny/crossref_metadata_2025_split huggingface dataset:
La teoría en la arquitectura
Authors: Acosta María Martina 
Published: October 2015

¿Cuál es el lugar que ocupa la reflexión teórica en el campo de la arquitectura? Aunque teoría y arquitectura se presentan como términos inescindibles, su necesidad y su capacidad para ordenar los problemas disciplinares constituyen un debate fragmentado e intrínsecamente inconcluso. La teoría indica problemas, prescribe prácticas, especula, critica. En los últimos veinte años, una serie de libros ha intentado condensar los aspectos sobresalientes del debate teórico desde mediados del siglo XX, recogiendo los pedazos de una cultura arquitectónica que no renuncia a discutir sobre la belleza o el significado pero se aleja de cualquier pretensión de verdad ontológica Junto a estos términos, presentes ya en la tríada vitruviana, otras ideas intentan justificar una práctica de ineludible carácter político. Este artículo explora la construcción de la teoría y sus transformaciones en la historia, subrayando la necesidad de la reflexión en la definición de un campo disciplinar que aun pugna por la buena y bella arquitectura.
Palabras clave
teoría; historia; crítica; arquitectura contemporánea
Tecnologías constructivas, procesos de enseñanza/aprendizaje.
Authors: Leblanc Fernando Raúl 
Published: October 2015

En los últimos años he ejercido como responsable de cátedra en un taller de enseñanza universitaria cuya temática se vincula con las técnicas constructivas ligadas a los procesos de prefabricación e industrialización. El tema abordado presenta fuertes vinculaciones con las experiencias desarrolladas en los países centrales. Esta situación ha llevado a un detenido análisis acerca de la manera en que el taller debía afrontar el estudio de esa tecnología, ya que ni se podía referenciar nuestra enseñanza únicamente al desarrollo tecnológico foráneo, que es del que se cuenta con una mayor información y experiencias desarrolladas, ni ignorarlo. El documento contempla un sucinto análisis de los últimos dos siglos de desarrollo de las citadas tecnologías en los países centrales para luego verificar las tendencias contestatarias a la idea de una tecnología única desarrollada por estos países. Finalmente, se propone una estrategia pedagógica que tiende a la consideración de las distintas tendencias, teniendo como objetivo la formulación de tecnologías que respondan a nuestra necesidad regional y nacional. Se describe, asimismo, la idea de que los alumnos, más que incorporar ejemplos concretos, elaboren criterios que les permitan la comprensión y elaboración de las tecnologías actuales así como las por venir.
Palabras clave
técnicas de montaje; tecnología única; tecnología alternativa; pedagogía; criterios técnicos
Transformaciones urbano–territoriales y sustentabilidad del desarrollo en la ciudad de Córdoba 1910–2010.
Authors: Venturini Mg. Arq. Edgardo J. , Ávila Mg. Arq. Víctor D. , Terreno Mg. Arq. Cristian 
Published: October 2015

A partir de la primera década del siglo XX, el crecimiento urbano de la ciudad de Córdoba comienza claramente a superar los límites de las potencialidades de ur-banización del territorio local. Las nuevas tecnologías de urbanización posibilitan responder a las demandas del crecimiento demográfico y económico que experimenta la ciudad. Este proceso se acentúa a partir de la década de 1940, con el desarrollo industrial de la ciudad y la expansión periférica respecto a los núcleos tradicionales de la ciudad fundacional y sus primeras extensiones (Nueva Córdoba y los llamados «Barrios pueblo»). Los años 60 consolidan estos procesos de extensión periférica. Pero a partir de los '70 se asiste al surgimiento del fenómeno de metropolización de Córdoba, con las consiguientes rupturas de los procesos de producción de lo urbano y la aparición de nuevas lógicas urbano–territoriales (descentralización, fragmentación, dispersión, difusión, segregación buscada–segregación obligada, grandes proyectos en «áreas especiales», nuevas conectividades), cuyas características, condiciones y déficits de sustentabilidad evidencian que los nuevos modos de producción de lo urbano son fuentes de mayores y más complejos problemas ambientales en la escala local–territorial.
Monitoring of Hemostasis by Rotational Thrombelastometry During Normal Pregnancy and Postpartum
Authors: Duraj L. , Stasko J. , Hasko M. , Chudy P. , Sokol J. , Danko J. , Kubisz P. 
Published: October 2015

Abstract
Background: Rotational thrombelastometry (ROTEM) is a real-time clotting test that provides insight into clotting factors, the fibrinolytic system and platelet function. We obtained the longitudinal values on ROTEM in normal pregnancy and in puerperium.
Material and Methods: After ethics committee approval and subject informed consent, citrated blood was sampled from healthy pregnants four times during pregnancy and one time postpartum. As controls we used nonpregnant women undergoing voluntary blood donation. Extem and Intem tests and basic coagulation test were carried out.
Results: We included 112 women in our study, 55 non-pregnant women (controls) and 57 healthy pregnants with 5 samplings. The values of maximum clot firmness (MCF - in EXTEM and INTEM) were significantly higher up to 34th-36th week of pregnancy than those in non-pregnant subjects. MCF in 6th-7th week after delivery was significantly higher in both tests. Clotting time (CT) in pregnant women was significantly shorter (EXTEM) compared to non-pregnant subjects. We also found a very strong correlation between MCF and platelet count in all gestational weeks.'
Conclusions: Rotation thromboelastometry clearly demonstrates the hypercoagulability in pregnancy and can reflect the higher risk of venous thromboembolism in both pregnancy and puerperium. Strong correlation between MCF and platelet count can suggest role of platelets in hypercoagulability in pregnant women. This study provides a better knowledge about physiological changes in ROTEM measurement during pregnancy and postpartum.
Acne Conglobata Associated with Hidradenitis Suppurativa, Disorders of Follicular Occlusion (Case Report)
Authors: Pecova K. 
Published: October 2015

Abstract
The author is presenting the case of a 23-year-old female patient with a severe form of acne conglobata, with the first symptoms of the disease occurring as far back as the prepubertal age. In the past year the disease has combined with hidradenitis suppurativa (to be referred to henceforth as “HS”), Hurley stage I, in the axillae and both sides of the inguinal region, with a family history of acne conglobata (both her mother and brother were affected). Further examinations ruled out inflammatory bowel disease because of a lack of further associated symptoms, except for sideropenic anaemia (lesser form) and lower serum values of vitamin D. Up until now the disease has been resistant to treatment, including the long-term treatment of methylprednisolone in combination with isotretinoid as well as dapsone and antibiotics.
Emergence of Cranio-Cervico-Facial Soft Tissue Emphysema after Dental Hygiene Treatment Using Airflow (Case Report)
Authors: Adamicova K. , Statelova D. , Fetisovova Z. , Vybohova D. , Drgova M. , Polacek H. 
Published: October 2015

Abstract
The authors report an interesting case of dangerous complications during dental hygienist treatment. Soft tissue emphysema during, and after stomatological procedures is described in several works. Such a complication after „airflowing“ has not yet been published in literature.
Lyapunov matrices approach to the parametric optimization of time-delay systems
Authors: Duda Józef 
Published: October 2015

AbstractIn the paper a Lyapunov matrices approach to the parametric optimization problem of time-delay systems with a P-controller is presented. The value of integral quadratic performance index of quality is equal to the value of Lyapunov functional for the initial function of the time-delay system. The Lyapunov functional is determined by means of the Lyapunov matrix
Analysis and adaptive control of a novel 3-D conservative no-equilibrium chaotic system
Authors: Vaidyanathan Sundarapandian , Volos Christos 
Published: October 2015

AbstractFirst, this paper announces a seven-term novel 3-D conservative chaotic system with four quadratic nonlinearities. The conservative chaotic systems are characterized by the important property that they are volume conserving. The phase portraits of the novel conservative chaotic system are displayed and the mathematical properties are discussed. An important property of the proposed novel chaotic system is that it has no equilibrium point. Hence, it displays hidden chaotic attractors. The Lyapunov exponents of the novel conservative chaotic system are obtained as L1= 0.0395,L2= 0 and L3= −0.0395. The Kaplan-Yorke dimension of the novel conservative chaotic system is DKY=3. Next, an adaptive controller is designed to globally stabilize the novel conservative chaotic system with unknown parameters. Moreover, an adaptive controller is also designed to achieve global chaos synchronization of the identical conservative chaotic systems with unknown parameters. MATLAB simulations have been depicted to illustrate the phase portraits of the novel conservative chaotic system and also the adaptive control results.
The Effect of Temperature on the Result of Complex Modification of IN-713C Superalloy Castings
Authors: Binczyk F. , Gradoń P. , Mańka M. , Findziński R. 
Published: October 2015

Abstract
The paper presents the results of research on the determination of the effect of pouring temperature on the macrostructure of the castings subjected to complex (surface and volume) modification and double filtration. Tested castings were made of post-production scrap (gating system parts) of IN-713C superalloy. Tests included the evaluation of the number of grains per 1 mm2, mean grain surface area, shape factor and tensile strength. Casting temperature below 1470 °C positively influenced the modification effect. The grains were finer and the mechanical properties increased, especially for castings with thicker walls. On the other hand, manufacture of thin walled castings of high quality require pouring temperature above 1480 °C.
Degradation of Creep Resistant Ni - Alloy During Aging at Elevated Temperature Part II: Structure Investigations
Authors: Kaczorowski M. , Skoczylas P. , Krzyńska A. 
Published: October 2015

Abstract
The results of structure observations of Ni base superalloy subjected to long-term influence of high pressure hydrogen atmosphere at 750K and 850K are presented. The structure investigation were carried out using conventional light-, scanning- (SEM) and transmission electron microscopy (TEM). The results presented here are supplementary to the mechanical studies given in part I of this investigations. The results of study concerning mechanical properties degradation and structure observations show that the differences in mechanical properties of alloy subjected different temperature are caused by more advanced processes of structure degradation during long-term aging at 850K, compare to that at 750K. Higher service temperature leads to formation of large precipitates of δ phase. The nucleation and growth of needle- and/or plate-like, relative large delta precipitates proceed probably at expense strengthening γʺ phases. Moreover, it can’t be excluded that the least stable γʺ phase is replaced with more stable γʹ precipitates. TEM observations have disclosed differences in dislocation structure of alloy aged at 750K and 850K. The dislocation observed in alloy subjected to 750K are were seldom observed only, while in that serviced at high stress and 850K dislocation array and dislocation cell structure was typical.
Structure Distribution in Precise Cast Iron Moulded on Meltable Model
Authors: Skrbek B. , Policar K. 
Published: October 2015

Abstract
Topic of this work is to compare metalurgy of cast irons poured into sand moulds and into shell molds at IEG Jihlava company and from it following differencies in structures of thin- and thick-walled castings. This work is dealing with investigation and experimental measurement on surfaces and sections suitable thin- and thick-walled investment castings at IEG Jihlava. Cast irons with flake graphite (grey cast iron) and cast irons with spheroidal graphite (ductile cast iron). Both mechanical and physical properties are determined using calculations from as measured values of wall thicknesses L and Lu, Vickers hardness and remanent magnetism. Measurement results are discussed, findings are formulated and methods for castings metallurgical quality improvement are recommended finally.
Numerical Model for Solidification Zones Selection in the Large Ingots
Authors: Wołczyński W. , Kwapisiński P. , Kania B. , Wajda W. , Skuza W. , Bydałek A.W. 
Published: October 2015

Abstract
A vertical cut at the mid-depth of the 15-ton forging steel ingot has been performed by curtesy of the CELSA - Huta Ostrowiec plant. Some metallographic studies were able to reveal not only the chilled undersized grains under the ingot surface but columnar grains and large equiaxed grains as well. Additionally, the structural zone within which the competition between columnar and equiaxed structure formation was confirmed by metallography study, was also revealed. Therefore, it seemed justified to reproduce some of the observed structural zones by means of numerical calculation of the temperature field. The formation of the chilled grains zone is the result of unconstrained rapid solidification and was not subject of simulation. Contrary to the equiaxed structure formation, the columnar structure or columnar branched structure formation occurs under steep thermal gradient. Thus, the performed simulation is able to separate both discussed structural zones and indicate their localization along the ingot radius as well as their appearance in term of solidification time.
Achieving Control of Coating Process in your Foundry
Authors: Muoio G.L. Di , Tiedje N.S. 
Published: October 2015

Abstract
Achieving control of coating thickness in foundry moulds is needed in order to guarantee uniform properties of the mould but also to achieve control of drying time. Since drying time of water based coatings is heavily dependent on the amount of water present in the coating layer, a stable coating process is prerequisite for a stable drying process. In this study, we analyse the effect of different variables on the coating layer properties. We start by considering four critical variables identified in a previous study such as sand compaction, coating density, dipping time and gravity and then we add centre points to the original experimental plans to identify possible non-linear effects and variation in process stability. Finally, we investigate the relation between coating penetration (a variable that is relatively simple to measure in production) and other coating layer thickness properties (relevant for the drying process design). Correlations are found and equations are provided. In particular it is found that water thickness can be directly correlated to penetration with a simple linear equation and without the need to account for other variables.
Controlled Precipitation Gaseous Cavities in Aluminium Castings
Authors: Roučka J. , Hotař J. 
Published: October 2015

Abstract
At thermal junctions of aluminium alloy castings and at points where risering proves to be difficult there appear internal or external shrinkages, which are both functionally and aesthetically inadmissible. Applying the Probat Fluss Mikro 100 agent, which is based on nano-oxides of aluminium, results in the appearance of a large amount of fine microscopic pores, which compensate for the shrinking of metal. Experimental tests with gravity die casting of AlSi8Cu3 and AlSi10Mg alloys have confirmed that the effect of the agent can be of advantage in foundry practice, leading to the production of castings without local concentrations of defects and without the appearance of shrinkages and macroscopic gas pores. Also, beneficial effect on the mechanical properties of the metal has been observed.
Mechanical Properties and Melt Quality Relationship of Sr-modified Al-12Si Alloy
Authors: Uludağa M. , Uyaner M. , Yilmaz F. , Dişpinar D. 
Published: October 2015

Abstract
The formation of oxide film on the surface of aluminium melts, i.e. bifilms, are known to be detrimental when they are incorporated into the cast part. These defects causes premature fractures under stress, or aid porosity formation. In this work, Al-12 Si alloy was used to cast a step mould under two conditions: as-received and degassed. In addition, 10 ppi filters were used in the mould in order to prevent bifilm intrusion into the cast part. Reduced pressure test samples were collected for bifilm index measurements. Samples were machined into standard bars for tensile testing. It was found that there was a good agreement with the bifilm index and mechanical properties.
In vitro cytotoxicity evaluation of different pulp capping materials: a comparative study
Authors: Poggio Claudio , Ceci Matteo , Dagna Alberto , Beltrami Riccardo , Colombo Marco , Chiesa Marco 
Published: October 2015

Abstract
Direct pulp capping covers the exposed surface of the pulp to maintain its vitality and preserve its functional and biologic activity. The aim of the present study was to compare the biocompatibility effects of seven different pulp-capping materials in vitro: Dycal®, Calcicur®, Calcimol LC®, TheraCal LC®, ProRoot MTA®, MTA-Angelus®, and Biodentine®. Using the Transwell insert methodology by Alamar blue test, we evaluated the cytocompatibility of the above mentioned materials towards murine odontoblasts cells (MDPC-23) at three different times (24, 48, and 72 h). For additional control, the cell viability at 72 hours was also assessed by MTT assay. Morphological analysis of murine odontoblasts was assessed by Confocal Laser Scanning Microscope. The results indicate significantly different biocompatibility among materials with different composition. Biodentine® and mineral trioxide aggregate (MTA)-based products showed lower cytotoxicity, varying from calcium hydroxide-based materials, which exhibited higher cytotoxicity. Although our findings are limited to in vitro conditions, the observation that Biodentine® caused a cytotoxic effect similar to MTA suggests that it may be considered an alternative in pulp-capping treatment, as calcium hydroxide-based materials present higher cytotoxic effects.
Levels of house dust mite allergen in cars / Razine alergena prašinskih grinja u automobilima
Authors: Mason Howard J. , Smith Ian , Anua Siti Marwanis , Tagiyeva Nargiz , Semple Sean , Devereux Graham 
Published: October 2015

Abstract
This small study investigated house dust mite (HDM) allergen levels in cars and their owners’ homes in north-east Scotland. Dust samples from twelve households and cars were collected in a standardised manner. The dust samples were extracted and measured for the Dermatophagoides group 2 allergens (Der p 2 and Der f 2) and total soluble protein. Allergen levels at homes tended to be higher than in the cars, but not significantly. However, they significantly correlated with paired car dust samples expressed either per unit weight of dust or soluble protein (rho=0.657; p=0.02 and 0.769; p=0.003, respectively). This points to house-to-car allergen transfer, with the car allergen levels largely reflecting levels in the owner’s home. Car HDM allergen levels were lower than those reported in Brazil and the USA. Twenty-five percent of the houses and none of the cars had allergen levels in dust greater than 2000 ng g-1. This value is often quoted as a threshold for the risk of sensitisation, although a number of studies report increased risk of sensitisation at lower levels. This small study does not allow for characterisation of the distribution of HDM allergen in vehicles in this geographic area, or of the likely levels in other warmer and more humid areas of the UK. Cars and other vehicles are an under-investigated micro-environment for exposure to allergenic material.
Photocatalytic study of organosilane-modified zinc oxide nanoparticles
Authors: Tăbăcaru Aurel , Buşilă Mariana , (Ghisman) Pleşcan Viorica , Muşat Viorica 
Published: October 2015

Abstract
In our recent studies, we have investigated the tunability of optical properties of zinc oxide nanoparticles (ZnO NPs) through surface modification with organosilane surfactants. In the present paper, the effect of ZnO NPs modified with variable amount of 3-(trimethoxysilyl)propylmethacrylate (MPS) surfactant was investigated toward the photocatalytic degradation of methylene blue (MB), using two different UV light sources emitting at 254 nm and 365 nm. While the maximum photodegradation efficiency of 63% was reached by ZnO NPs loaded with the highest concentration of MPS upon exposure at 254 nm, in the case of UV exposure at 365 nm an opposite photodegradation trend was observed. Actually, a significant photodegradation efficiency of 95% was recorded by the unmodified ZnO, followed by ZnO NPs modified with 2% MPS for which the photodegradation efficiency amounted to 80%, thus highlighting their best photocatalytic performance.
Cavitational Iron Microparticles Generation By Plasma Procedures For Medical Applications
Authors: Bica Ioan , Bunoiu Madalin , Chirigiu Liviu , Spunei Marius , Juganaru Iulius 
Published: October 2015

Abstract
The paper presents the experimental installation for the production, in argon plasma, of cavitational iron microparticles (pore microspheres, microtubes and octopus-shaped microparticles). Experimental results are presented and discussed and it is shown that absorbant particles with a minimum iron content are obtained by the plasma procedures
On A Schwarszchild-Like Metric
Authors: Anastasiei Mihai , Gottlieb Ioan 
Published: October 2015

Abstract
In this short Note we would like to bring into the attention of people working in General Relativity a Schwarzschild like metric found by Professor Cleopatra Mociuţchi in sixties. It was obtained by the A. Sommerfeld reasoning from his treatise "Elektrodynamik" but using instead of the energy conserving law from the classical Physics, the relativistic energy conserving law.
LIDAR Measurements Comparison Of Two Volcanic Eruptions: Environmental Influences Upon The Romanian Territory
Authors: Dănilă Mihai Nicolae , Unga Florin , Cazacu Marius Mihai , Timofte Adrian , Strat Mitachi , Dimitriu Dan Gheorghe , Gurlui Silviu 
Published: October 2015

Abstract
The eruption of both the Eyjafjallajokull (April 2010) and Grimsvotn (May 2011) volcanoes cumulated with two moments that gave headaches to the authorities and air traffic, and their impact on the environment upon Iasi region have been studied by means of different tools evidencing the complexity of the phenomena. In order to evidence the intrusion of pollutants in the cloud systems and to obtain additional data on the intrusion when the ash cloud was over our country, LIDAR measurements, meteorological (NMA), Satellite data (EUMETSAT), and various forecasting models (ECMWF, VAAC-Met Office, HYSPLIT) have been used. The new 3D Atmospheric Observatory Site of the Alexandru Ioan Cuza University of Iasi, as part of RADO (Romanian Atmospheric 3D Observatory) is presented, too.
Preliminary Study In Preparation Of Nd3+: YAG And Sm3+: Y2O3 Transparent Ceramics
Authors: Voicu F. , Gheorghe C. , Florica C. 
Published: October 2015

Abstract
In the present work we present preliminary research on producing of transparent polycrystalline ceramics. Samarium doped Yttrium oxide (1%, 3% and 5%) and Neodymium (1%) doped YAG (Y3Al5O12) translucent ceramics were fabricated by solid-state reaction. Commercial nanopowders was used as the starting materials: Sm2O3 (6μm) and Y2O2 (20-50 nm) for Sm3+: Y2O3 and α-Al2O3, Y2O3 and Nd2O3 (20-50 nm) for Nd3+: YAG. For the preparation of Nd3+: YAG, 0.5 wt% tetraethyl orthosilicate (TEOS) was use as sintering additive, and 1 wt % PEG (polyethylene glycol-400) as dispersant.