bluuebunny/crossref_metadata_2025_split huggingface dataset:
Surgical treatment of anogenital hemangiomas of infancy
Authors: Bulea Raluca , Enescu D.M , Giuvelea Steluţa , Stoicescu Simona , Alexandru Raluca , Ioniţă D 
Published: December 2014

Abstract
Introduction Infantile hemangiomas (IHs) are the most common benign tumors of the soft tissue in infants and children and they often represent a serious challenge for the treating physician. Hemangiomas located in the anogenital region represent only about 1% of all IHs, but raise special concerns as they have the propensity to ulcerate. This condition may appear spontaneously, or could result from therapeutic procedures. Ulceration is extremely painful and takes many weeks of conservative therapy to heal.

Material and Methods. The aim of this study is to present the surgical approach of the IHs located in the anogenital area and the outcomes of this treatment option.

Results. During a period of 36 months, 11 children (nine girls, two boys) were referred to our plastic surgery department with hemangiomas involving the anogenital, groin and perineum areas. The average follow-up period was of 8 months, during which 82% of cases experienced complications, especially ulceration. All the target hemangiomas were removed through a lenticular excision and the wound closed with a linear suture.

Conclusions. Our study has shown that surgical excision of a complicated anogenital hemangioma or of a “healthy” hemangioma at high risk for ulceration in the anogenital region is an effective treatment, with fast healing and complete resolution of the pathogenic condition. Lenticular excision and linear closure represent a convenient surgical technique that can be performed as early surgery, during the proliferative stage, or at any time later, when the patient needs treatment, in safety conditions and with good results.
Characteristics modeling for supercritical circulating fluidized bed boiler working in oxy-combustion technology
Authors: Balicki Adrian , Bartela Łukasz 
Published: December 2014

Abstract
Among the technologies which allow to reduce greenhouse gas emission, mainly carbon dioxide, special attention deserves the idea of ‘zeroemission’ technology based on boilers working in oxy-combustion technology. In the paper the results of analyses of the influence of changing two quantities, namely oxygen share in oxidant produced in the air separation unit, and oxygen share in oxidant supplied to the furnace chamber on the selected characteristics of a steam boiler including the degree of exhaust gas recirculation, boiler efficiency and adiabatic flame temperature, was examined. Due to the possibility of the integration of boiler model with carbon dioxide capture, separation and storage installation, the subject of the analysis was also to determine composition of the flue gas at the outlet of a moisture condensation installation. Required calculations were made using a model of a supercritical circulating fluidized bed boiler working in oxy-combustion technology, which was built in a commercial software and in-house codes.
Some problems of hydrodynamics of two-phase flow mixtures in minichannels
Authors: Wengel Monika , Miłaszewicz Barbara , Ulbrich Roman 
Published: December 2014

Abstract
Gas-liquid two-phase flow in minichannels has been the subject of increased research interest in the past few years. Evaluation, however, of today’s state of the art regarding hydrodynamics of flow in minichannels shows significant differences between existing test results. In the literature there is no clear information regarding: defining the boundary between minichannels and conventional channels, labelling of flow patterns. The review of literature on the hydrodynamics of gas-liquid flow in minichannels shows that, despite the fact that many research works have been published, the problem of determining the effect of diameter of the minichannel on the hydrodynamics of the flow is still at an early stage. Therefore, the paperpresents the results of research concerning determination of flow regime map for the vertical upward flow in minichannels. The research is based on a comprehensive analysis of the literature data and on the research that has been carried out. Such approach to the mentioned above problems concerning key issues of the two-phase flow in minichannels allowed to determine ranges of occurrence of flow structures with a relatively high accuracy.
Evaluation of resisdence time measurements on heat exchangers for the determination of dispersive Peclet numbers
Authors: Roetzel Wilfried , Ranong Chakkrit Na 
Published: December 2014

Abstract
The recently developed special unity Mach number dispersion model prescribes the corrections to heat transfer coefficients which are simple functions of the dispersive Peclet numbers. They can be determined through the residence time measurements. An evaluation method is described in which the measured input and response concentration profiles are numerically Laplace transformed and evaluated in the frequency domain. A characteristic mean Peclet number is defined. The method is also applied to the parabolic dispersion model and the cascade model. A calculated example of a tube bundle with maldistribution and backflow demonstrates the suitability of the evaluation method.
Development of fiber Bragg gratings technology and their complex structures for sensing, telecommunications and microwave photonics applications
Authors: Osuch T. , Gąsior P. , Markowski K. , Jędrzejewski K. 
Published: December 2014

Abstract
In this paper research on the development of the fiber Bragg grating (FBG) technology which has been conducted at the Institute of Electronic Systems (IES), Warsaw University of Technology (WUT) since 2004 is presented. In particular the directions in the development of advanced set-ups employing the phase mask inscription scheme are discussed and supported with the descriptions of structures designed and fabricated with the use of the laboratory stages constructed at the IES. The novelty of the presented solutions is based on the combination of numerous techniques of the external modification of the interferometric patterns (projected onto cores of photosensitive fibers to modulate their refractive index) as well as application of the modification of the internal properties of the waveguides themselves by the means of introducing strain or tapering.
The development of these sophisticated set-ups resulted in the inscription of FBGs with precisely designed spectral characteristics which found application in telecommunications and sensor technology are also illustrated here.
The paper is summarized with the specification of the most important achievements attained at the lab and drafting of the possible directions of further research.
Erbium and Al2O3 nanocrystals-doped silica optical fibers
Authors: Kasik I. , Podrazky O. , Mrazek J. , Cajzl J. , Aubrecht J. , Probostova J. , Peterka P. , Honzatko P. , Dhar A. 
Published: December 2014

Abstract.
Fibre lasers and inherently rare-earth-doped optical fibers nowadays pass through a new period of their progress aiming at high efficiency of systems and their high power. In this paper, we deal with the preparation of silica fibers doped with erbium and Al2O3 nanocrystals and the characterization of their optical properties. The fibers were prepared by the extended Modified Chemical Vapor Deposition (MCVD) method from starting chlorides or oxide nanopowders. Conventional as well as modified approaches led to a nanocrystalline mullite phase formation in the fiber cores in which erbium is dissolved. The proposed modified approach based on starting nanopowders led to improved geometry of preforms and fibers and consequently to the improvement of their background attenuation. Such nanocrystal -doped fibers can be used for ASE sources. Further improvement of fiber optical properties can be expected.
Multipitch estimation using judge-based model
Authors: Rychlicki-Kicior K. , Stasiak B. 
Published: December 2014

Abstract
Multipitch estimation, also known as multiple fundamental frequency (F0) estimation, is an important part of the Music Information Retrieval (MIR) field. Although there have been many different approaches proposed, none of them has ever exceeded the abilities of a trained musician. In this work, an iterative cancellation method is analysed, being applied to three different sound representations - salience spectrum obtained using Constant-Q Transform, cepstrum and enhanced autocorrelation result. Real-life recordings of different musical instruments are used as a database and the parameters of the solution are optimized using a simple yet effective metaheuristic approach - the Luus-Jaakola algorithm. The presented approach results in 85% efficiency on the test database.
Comparison of transient states in step-down power converter (BUCK) in continuous and discontinuous conduction mode
Authors: Janke W. , Walczak M. 
Published: December 2014

Abstract
The object of this paper is a step-down (BUCK) power converter working in the continuous conduction mode (CCM) or discontinuous conduction mode (DCM). Two types of transient states in a converter have been analyzed and observed experimentally: slow transients, described by averaged models of a converter and fast transients, in the course of a single switching period. The averaged models of converter working in CCM, presented in various sources are similar, with some differences concerning only the description of parasitic effects. The averaged models for DCM depend on the adopted modeling method. Models obtained by the switch averaging approach are second-order models (containing two reactive elements in equivalent circuit representation). Models obtained by the separation of variables approach are first-order models. The experimental results given in this paper show the first-order type of transients. Another group of experiments concern fast transients in the course of a single switching period. The oscillations of inductor voltage in the part of a switching period are observed for DCM.
Due window assignment and scheduling on parallel machines: a FPTAS for a bottleneck criterion
Authors: Janiak A. , Janiak W. , Kovalyov M.Y. 
Published: December 2014

Abstract
A fully polynomial time approximation scheme (FPTAS) with run time is developed for a problem which combines common due window assignment and scheduling n jobs on m identical parallel machines. The problem criterion is bottleneck (min-max) such that the maximum cost, which includes job earliness, job tardiness and due window size costs, is minimized.
Duality of variable fractional order difference operators and its application in identification
Authors: Sierociuk D. , Twardy M. 
Published: December 2014

Abstract
The paper presents a number of definitions of variable order difference and discusses duality among some of them. The duality is used to improve the performance of the least squares estimation when applied to variable order difference fractional systems. It turns out, that by appropriate exploitation of duality one can reduce the estimator variance when system identification is carried out.
Multiple Soft Fault Diagnosis of Bjt Circuits
Authors: Tadeusiewicz Michał , Hałgas Stanisław 
Published: December 2014

Abstract
This paper deals with multiple soft fault diagnosis of nonlinear analog circuits comprising bipolar transistors characterized by the Ebers-Moll model. Resistances of the circuit and beta forward factor of a transistor are considered as potentially faulty parameters. The proposed diagnostic method exploits a strongly nonlinear set of algebraic type equations, which may possess multiple solutions, and is capable of finding different sets of the parameters values which meet the diagnostic test. The equations are written on the basis of node analysis and include DC voltages measured at accessible nodes, as well as some measured currents. The unknown variables are node voltages and the parameters which are considered as potentially faulty. The number of these parameters is larger than the number of the accessible nodes. To solve the set of equations the block relaxation method is used with different assignments of the variables to the blocks. Next, the solutions are corrected using the Newton-Raphson algorithm. As a result, one or more sets of the parameters values which satisfy the diagnostic test are obtained. The proposed approach is illustrated with a numerical example.
Prototype of a Dsp-Based Instrument for In-Service Wireless Transmitter Power Measurement
Authors: Angrisani Leopoldo , Cennamo Felice , Scarpato Giovanni , Schiano Lo Moriello Rosario 
Published: December 2014

Abstract
A prototype of a DSP-based instrument for in-service transmitter power measurements is presented. The instrument implements a signal-selective algorithm for power measurements that is suitable for use in wireless environments, where possible uncontrolled interfering sources are present in the radio channel and are overlapped to the signal emitted by the transmitter under test, possibly in both time and frequency domain. The measurement method exploits the principles of cyclic spectral analysis, which are briefly recalled in the paper. Potentialities, as well as limitations of the prototype use are discussed, and the results of experiments with both modulated and unmodulated interfering sources are presented.
Pre-Migration Roost Site use and Timing of Postnuptial Migration of Red-Footed Falcons (Falco Vespertinus) Revealed by Satellite Tracking
Authors: Fehérvári Péter , Lázár Bence , Palatitz Péter , Solt Szabolcs , Nagy Attila , Prommer Mátyás , Nagy Károly , Harnos Andrea 
Published: December 2014

Abstract
Red-footed Falcons are gregarious trans-equatorial migrants, forming up to several thousand strong roost sites after the breeding season and before commencing migration. This pre-migration period is presumed to play a major role in defining the survival of long-range migrants. Here we investigate the autumn movements of 8 individuals caught and satellite-tagged within the Carpathian Basin. We found that birds may use multiple roost sites that can be separated by large distances. A single individual’s home range was 88 km2 (80% kernel home range) and was near concentrical to the roost site. Two individuals travelled to southern Ukraine soon after tag-deployment. Our results demonstrate that even a small number of satellite tagged birds show behavioural plasticity in terms of roost site selection indicating that post-breeding foraging habitat choice decisions may have substantial variability. The night localization points of birds marked out 2 and 5 yet unknown potential roost sites in Hungary and in the Ukraine, respectively. Using the data of an international weekly survey (2006-2011) carried out in the Carpathian Basin, we cross-referenced the departure dates of tagged individuals with the 6 year means of counted individuals. The tagged birds initiated migration with the first 25% percent of the surveyed population.
Evaluation of the potential of alkylresorcinols as superoxide anion scavengers and sox-regulon modulators using nitroblue tetrazolium and bioluminescent cell-based assays
Authors: Gryazeva Irina V. , Davydova Оlga K. , Deryabin Dmitrii G. 
Published: December 2014

AbstractThe antioxidant activities of five alkylresorcinol (AR) homologs with alkyl chains of 1, 3, 5 6 and 12 carbon atoms were studied using molecular and cellular assays for superoxide anions (O
Popularization of the creative works of artist-illustrators and designers of children’s books in Poland after the political system transformation (1989-2010)
Authors: Boguszewska Anna 
Published: December 2014

AbstractSignificant changes started in the children’s books market from 1989. The market gradually began to be saturated with far less expensive reprints of Western productions. Their artistic form is based on the style of cartoons, thus replacing the diversity of illustrations which is necessary to activate the development of child’s perception. Consequently, a special role is played by measures aimed to popularize the artistic achievements of artist-illustrators and designers of books for children in Poland. After the political system transformation, earlier activities were continued (plein-air workshops for illustrators in the Roztocze region). New undertakings were also initiated (meetings with graphic layout artists, conferences, exhibitions, workshops for children and teenagers in libraries). The article discusses the activities of Gallery [Galeria] 31 at Branch no. 30 of Hieronim Lopaciński City Public Library in Lublin, Poznań Trade Fair Meetings in Poznań, and plein-air workshops for artist-illustrators. These events are an example of local and nation-wide activities. They develop a conscious attitude towards the impact of the book form as a visual communication. The forms of Polish books (including textbooks and reading list books) for the youngest readers cannot be regarded as satisfactory.
Protection of the Child’s Creative Output Including Its Legal Protection
Authors: Sokołowska Anna 
Published: December 2014

AbstractThis paper is an attempt to analyze the necessity of defining and extending the protection of the child’s creative process. The starting point for consideration is the key role of artistic instruction in the child’s education and development which justifies providing appropriate framework for that process. The present text defines artistic output as a personal good covered by legal protection and specifies relevant legal regulations underlying the subject. It also reveals the position of the child as a creator with his/her specific characteristics and possible dangers arising from those characteristics. Another issue discussed here is the creative process and its components. In a further part, legal aspects of the child’s situation in the context of creative activity are analyzed with references to the UN Convention on the Rights of the Child (1989), the (Polish) Family and Guardianship Code (1964), the UN Declaration on Rights of the Child (1959) and other legal acts. Finally, the paper addresses objectives of arts education in the light of the discussed issues. Conclusions include an indication of certain similarity between some areas of interest in pedagogy and in law. The main conclusion comes down to a statement that in the education process we should take into consideration so-called creative integrity which constitutes a personal good of both the adult and the child, and which is covered by legal protection.
Héros-victime, une figure d'identification pour les jeunes des quartiers populaires
Authors: Bordet Joëlle 
Published: December 2014

Cet article a pour sujet les figures d’identification héroïque à l’adolescence pour les jeunes des quartiers populaires. Nous analysons comment ces figures ont évolué depuis leur création dans les années 1960, comment d’un héroïsme caractérisé par la figure du justicier et la rivalité des bandes, elles se combinent aujourd’hui avec des figures héroïques à l’œuvre dans des conflits médiatisés, pris dans la mondialisation. Nous montrons comment les jeunes filles elles-mêmes sont présentes et actives à ce propos.
Structure de propriété et divulgation volontaire sur internet : cas des entreprises tunisiennes cotées non financières
Authors: Kammoun Aïda , Khrifech Dhouha 
Published: December 2014

L’objectif principal de cet article est d’analyser l’impact de la structure de propriété sur l’étendue de la divulgation volontaire des informations sur le web. Plus spécifiquement, il étudie la relation entre les caractéristiques de la structure de propriété (concentration et nature des actionnaires) et la publication des informations financières sur Internet par les entreprises tunisiennes cotées non financières. La variable endogène, « Divulgation Volontaire sur Internet », est mesurée par un score non pondéré relatif au contenu et à la forme de présentation du site Web. En considérant un panel de trente entreprises tunisiennes cotées non financières sur une période de 4 ans (2005-2008), la régression a montré que la propriété institutionnelle, la concentration de la propriété et la taille de l’entreprise sont des déterminants du niveau de la divulgation volontaire sur Internet en Tunisie.
Phakic Intraocular Lens Explantation: Causes in 240 Cases
Authors: Alió Jorge L. , Toffaha Bader T. , Peña-Garcia Pablo , Sádaba Luis Manuel , Barraquer Rafael I. 
Published: December 2014

PURPOSE:
To describe the main causes of explantation of phakic intraocular lenses (PIOLs) according to the anatomical site of implantation (angle supported, iris fixated, or posterior chamber).

METHODS:
This multicentric, retrospective, and consecutive study sponsored by the Spanish Ministry of Health comprised a total of 240 eyes (226 patients) explanted due to PIOL complications. Clinical data of 144 angle-supported lenses, 24 iris-fixated lenses, and 72 posterior chamber lenses explanted were recorded preoperatively and postoperatively.

RESULTS:

Mean age of the patients at explantation was 46.30 ± 11.84 years (range: 25 to 80 years). The mean time between implantation and explantation was 381.14 ± 293.55 weeks (range: 0.00 to 1,551.17 weeks). It was 422.33 ± 287.81 weeks for the angle-supported group, 488.03 ± 351.95 weeks for the iris-fixated group, and 234.11 ± 4,221.60 weeks for the posterior chamber group. It was 8.10 ± 5.52 years for the angle-supported group, 9.36 ± 6.75 years for the iris-fixated group, and 4.49 ± 4.25 years for the posterior chamber group. This period of time was significantly shorter in the posterior chamber group (
P
< .001). Overall, the main causes of explantation were cataract formation (132 eyes, 55%), endothelial cell loss (26 eyes, 10.83%), corneal decompensation (22 eyes, 9.17%), PIOL dislocation/decentration (16 eyes, 6.67%), inadequate PIOL size or power (12 eyes, 5%), and pupil ovalization (10 cases, 4.17%). Cataract development was the cause of explantation in 51.39% of angle-supported cases, 45.83% of iris-fixated cases, and 65.28% of posterior chamber cases. Endothelial cell loss was the cause of explantation in 15.97% of angle-supported PIOLs, 8.33% of iris-fixated PIOLs, and 1.39% of posterior chamber PIOLs.

CONCLUSIONS:
Cataract is the main cause of PIOL explantation, especially in posterior chamber PIOLs. In the angle-supported group, endothelial cell loss was the second cause of explantation.

[
J Refract Surg
. 2015;31(1):30–35.]
PREPARATION OF LOW TEMPERATURE RESISTANT AND HIGH ELECTRICAL INSULATION CHLOROPRENE RUBBER–BUTADIENE RUBBER BLENDS
Authors: Zheng Junping , Tan Jin , Gao Hong , Wang Chuanzeng , Dong Zhilei 
Published: December 2014

ABSTRACT
To satisfy some special demands of many applications in the fields of aerospace and the electronic industry, low temperature resistant and high electrical insulation chloroprene rubber (CR) was prepared by blending pristine CR with different weight ratios of butadiene rubber (BR). The low temperature resistance, electrical insulation properties, and mechanical properties of CR/BR blends were investigated. With increasing BR content, the low temperature resistance and electrical insulation properties were improved, whereas the tensile strength and elongation at break decreased. For the CR/BR (65/35) blend, filled with SiO2, the brittleness temperature (Tb) was reduced to −61 °C and the high electrical insulation properties were obtained without sacrificing mechanical properties too much. The tan δ plots of CR/BR blends, investigated by dynamic mechanical analysis, also revealed that BR could reduce glass transition temperature (Tg) and improve low temperature resistance of CR. The phase contrast microscope images of CR/BR blends demonstrated that the phase structure of the blends changed with increasing BR content. Furthermore, the fracture surfaces of CR/BR blends, observed by scanning electron microscopy, showed that the compatibility of CR/BR blends was poor although the CR/BR blends were homogeneous in macrostructure.