bluuebunny/crossref_metadata_2025_split huggingface dataset:
Suspensor Development in Gagea Lutea (L.) Ker Gawl., with Emphasis on the Cytoskeleton
Authors: Świerczyńska Joanna , Bohdanowicz Jerzy 
Published: May 2015

Abstract
The study used fluorescence microscopy to examine changes in cytoskeleton configuration during development of the embryo suspensor in Gagea lutea and to describe them in tandem with the development of the embryo proper. During the early phase of embryo suspensor development, tubulin and actin filaments were observed in the cytoplasm of the basal cell from the micropylar to the chalazal ends of the cell. Around the nucleus of the basal cell were clusters of numerous microtubules. These accumulations of tubulin arrays congregated near the nucleus surface; numerous bundles of microtubules radiated from the nucleus envelope. At this time, microfil-aments formed a delicate network in the cytoplasm of the basal cell. In the fully differentiated embryo suspensor, microtubules were observed at the chalazal end of the basal cell. Numerous bundles of microtubules were visualized in the cytoplasm adjacent to the wall separating the basal cell from the embryo proper. Microfilaments formed a dense network which uniformly filled the basal cell cytoplasm. There were some foci of F-actin material in the vicinity of the nucleus surface and at the chalazal end of the basal cell. In all studied phases of embryo suspensor development a prominent cortical network of actin and tubulin skeleton was observed in embryo proper cells.
Induction, Growth and Paclitaxel Content of Needle-and Petiole-Derived Calli in Himalayan Yew (Taxus Wallichiana Zucc.) Under Light-Emitting Diodes
Authors: Nhut Duong Tan , Nguyen Phan Le Ha , Don Nguyen Trinh , Hien N.T.T. , Huy Nguyen Phuc , Nam Nguyen Ba , Vinh Bui The , Luan Tran Cong 
Published: May 2015

Abstract
To achieve a better understanding of accumulation of paclitaxel and related taxanes in Himalayan yew (Taxus wallichiana Zucc.) callus mass, induction and growth of calli from needles and petioles under light-emitting diodes (LEDs) and production of paclitaxel and baccatin were investigated. Calli were induced from needles and petioles on Gamborg's B5 medium supplemented with 1 mg·l-1 kinetin and 4 mg·l-1 2,4-D under different com-binations of blue and red LEDs. Calli were further cultured in that medium under the same lighting conditions. Callus induction from needles and petioles and growth was better under blue LEDs than under red LEDs and fluorescent light. The combinations of blue and red LEDs produced variable results. The paclitaxel content of these calli was quantified by high-performance liquid chromatography. The paclitaxel content of calli derived from needles was 0.00628% and the 10-DAB (10-Deacetylbaccatin III) content was 0.00366%. The paclitaxel content of calli derived from petioles was 0.00412%, and no 10-DAB was detected.
Optimization of a Call Centre Performance Using the Stochastic Queueing Models
Authors: Brezavšček Alenka , Baggia Alenka 
Published: May 2015

Abstract
Background A call centre usually represents the first contact of a customer with a given company. Therefore, the quality of its service is of key importance. An essential factor of the call centre optimization is the determination of the proper number of operators considering the selected performance measure. Results of previous research show that this can be done using the queueing theory approach. Objectives: The paper presents the practical application of the stochastic queueing models aimed at optimizing a Slovenian telecommunication provider’s call centre.
Methods/Approach: The arrival and the service patterns were analysed, and it was concluded that the call centre under consideration can be described using the M/M/r {infinity/infinity/FIFO} queueing model.
Results: An appropriate number of operators were determined for different peak periods of the working day, taking into consideration the following four performance measures: the expected waiting time, the expected number of waiting customers, the probability that a calling customer will have to wait, and the call centre service level.
Conclusions: The obtained results prove the usefulness and applicability of the queueing models as a tool for a call centre performance optimization. In practice, all the data needed for such a mathematical analysis are usually provided. This paper is aimed at illustrating how such data can be efficiently exploited.
Regions for Servicing Old People: Case study of Slovenia
Authors: Drobne Samo , Bogataj Marija 
Published: May 2015

Abstract
Background: Aging is one of the most serious problems that most developed countries are facing in the 21st century. In the European Union, Member States are responsible for the planning, funding and administration of health care and social protection systems. Local authorities and state governments should undertake research toward developing an appropriate array of community-based care services for old people. Objectives: This study analyses the regions of Slovenia for servicing old people in the 2000-2010 time horizon. Methods/Approach: Sets of functional regions were modelled for each year in the analysed period using the Intramax method. Functional regions were evaluated based on the attractiveness of central places for labour commuters and the propensity to commute between regions. Results: The results show that in addition to the nominally declared regional centres of Slovenia, there are also some other local centres that should be potentially included in the functional areas for servicing old people. Conclusions: The results suggest that the regionalization into seven functional regions is the most convenient for servicing old people in the region. Furthermore, some additional functional regions at a lower level are suggested.
How to Measure Illiquidity on European Emerging Stock Markets?
Authors: Vidović Jelena , Poklepović Tea , Aljinović Zdravka 
Published: May 2015

Abstract
Background: Liquidity is, in practice of portfolio investment, an important attribute of stocks and measuring illiquidity presents a real challenge for researchers, primarily on developed stock markets. Moreover, there is a lack of research dealing with (il)liquidity on emerging markets. In the paper, the problem of applicability and validity of two well-known illiquidity measures, ILLIQ and TURN, on European emerging markets is observed. Objectives: The paper has two main purposes. The first is to test the relative performance of the two selected illiquidity measures in terms of their validity on European emerging stock markets. The second is to propose a new and improved illiquidity measure named Relative Change in Volume (RCV).
Methods/Approach: Using daily returns and traded volumes for 12 stocks which are constituents of stock indices on seven observed markets, ILLIQ and TURN along with the new proposed measure are calculated and tested based on correlation with return. All measures are tested and proposed using the single stock approach.
Results: It is shown that ILLIQ and TURN are not appropriate for seven observed markets. The measures do not follow the obligatory request that returns increase in illiquidity while RCV has the ability of taking into account the pressure of big differences in volume on return. RCV gives satisfactory results, making clear the distinction between liquid and illiquid stocks and between liquid and illiquid markets.
Conclusions: The proposed measure potentially has important implications in illiquidity measurement in general, and not only for investors on emerging stock markets.
Inaugural editorial
Authors: Fürst Christine , Berry Peter , Geneletti Davide , Khamzina Asia , Sanfo Safiétou 
Published: May 2015

AbstractThis inaugural editorial introduces the research topics addressed by the journal Change and Adaptation in Socio-Ecological Systems (CASES). A recent literature analysis revealed that the amount of integrative, interand transdisciplinary research activities on climate and global change, adaptive strategies, actor behaviors and response opportunities has increased significantly in the last few decades. Also, research activities on major drivers for the change and adaptation of socio-ecological systems, namely climate change, socio-economic and political changes and technological development have increased considerably since the 1950s. A publication platform that allows for overarching perspectives, integrative viewpoints, and the exchange of ideas among related disciplines in Socio-Ecological Systems (SES) science is provided by the new journal CASES.
Effect of Fano Resonance in photovoltaic
Authors: Sun Dong 
Published: May 2015

AbstractWe have shown that the Fano interference in the decay channels of a three-level system can lead to considerably different absorption and emission profiles. We found that a coherence can be built up in the ground state doublet, with strength depending on a coupling parameter that arises from the Fano interference. The coherence can in principle lead to breaking of the detail balance between the absorption and emission processes in atomic systems.
The catalytic activity of sirtuins in physiology and disease from the epigenetic point of view
Authors: Albani Diego , Forloni Gianluigi 
Published: May 2015

AbstractSirtuins are a family of conserved enzymes that are involved in physiological and pathological pathways and have been investigated in relation to the ageing process. There are seven different sirtuins in mammals that are encoded by individual genes (SIRT1-7). Sirtuins share a highly conserved catalytic domain, and they have NAD+ dependent deacetylase activity and secondary ADPribosylase activity in different proportions and on different molecular targets. Sirtuins might be pharmacologically modulated by small molecules that might represent a novel class of “epigenetic” drugs. In fact, sirtuins’ deacetylase activity may impact the epigenetic regulation network acting on histones or affecting chromatin stability, while the mono-ADP-ribosylase catalysis is less explored to this respect. Here we review and discuss the potential impact of sirtuin catalytic activities from the epigenetic pointof- view, with a focus on age-related diseases (cancer,
Experimental Analysis of Waterproofing Polymeric Pavements for Concrete Bridge Decks
Authors: Pasetto Marco , Giacomello Giovanni 
Published: May 2015

ABSTRACTOn concrete bridge and viaduct decks, traditional bituminous pavements are often subject to rapid degradation, particularly due to precipitation, traffic loadings and chemical attack. Pavement failure can also be due to underlying cracks related to steel reinforcement corrosion. For this reason waterproofing plays an important role in durability of the structure. Waterproofing can be done by means of polymeric binders and aggregates, mixed or applied together in the surface course.The paper summarizes the main results of a study aimed at mechanically characterizing resin-aggregate mixtures (premixed and multi-layers) for bridge waterproofing and paving: two types of resins and several types of natural and artificial/industrial aggregate (EAF slag, C&D aggregate, limestone and quartz sand) were used. Permanent deformation resistance and adhesion tests were conducted, as well as trials to define the surface characteristics of the product (skid resistance, permeability, macro-texture). The comparison demonstrates that polymeric slurries present better resistance than polymeric multi-layers and bituminous mixtures to permanent deformation at higher temperatures (40 to 60 °C), but show some deficiencies in adhesion properties. However, the surface characteristics of polymeric multi-layers are preferable to those of slurries and traditional bituminous mixtures.
The Possibilities to Decrease the Coefficient of Friciton Between Head and Socket of the Endoprosthesis of Hip Joint
Authors: Haringová Andrea , Stračár Karol , Prikkel Karol 
Published: May 2015

Abstract
The article deals with the question of physical parameters that could positively influence the overall lifetime of hip joint endoprosthesis. As the important physical parameter it was selected the coefficient of friction. The contribution offers possibilities how to decrease the coefficient of friction and experimentally test these assumptions
Sintering of HDH Ti Powder
Authors: Kováčik Jaroslav , Emmer Štefan 
Published: May 2015

Abstract
Titanium powders prepared by hydro-dehydration process (HDH powder) were pressure less sintered in vacuum oven at different temperatures, time and green density. The sintering properties of powders of two particle sizes - 30 and 150 microns were investigated. The usual powder metallurgical (PM) results were observed, i.e., decreasing final porosity with increasing sintering temperature and time at constant heating rate. Higher green density leading to higher final density for both powder sizes was also observed. The obtained results will be used as comparative material for future sintering experiments of Ti based composites.
Use of Modal Synthesis for Composite Structures
Authors: Musil Miloš , Chlebo Ondrej 
Published: May 2015

Abstract
A common occurrence in engineering practice is undesirable levels of vibration in the structures of machinery, which decrease their functionality, safety, reliability and service life. Current trends in the dynamic operation of machinery inherently generate such undesirable effects. That is to say, increasing the operational capacity of a machine (higher speeds, higher loads, more changes in operational regimes, etc...) is financially counterproductive to any desired savings in the material/technological realization of such structures. One possible approach to modify the dynamic properties of the structure is through modal synthesis. This approach combines the modal properties of the real structure obtained through measurements with the modal properties of additional components obtained computationally. This approach is particularly effective if the computational model of the built structure is incorrect.
Tuning the Engine Skoda 781 for Sport Competitions
Authors: Ragan Branislav , Polóni Marián , Chríbik Andrej 
Published: May 2015

Abstract
This article deals with the tuning of a mass-produced engine Skoda 781.136B and its rebuilding into a racing engine. The introduction briefly describes the basic parameters of the massproduced engine. The information is then followed by a detailed description of adjustments to the pipe system, valve timing, cylinder head and crank mechanism. The article presents the benefits in terms of increasing power parameters and there is also a comparison of speed characteristics. The aim of the tuning was to increase the engine power parameters, in particular the torque in the range of 4 000-6 000 min-1, at which the engine most often operates during competitions. The adjustments and optimization of the engine have increased the power parameters in the required range of revolutions by 38-47%.
Intelligent Storage System Based on Automatic Identification
Authors: Kolarovszki Peter , Vaculík Juraj 
Published: May 2015

Abstract
This article describes RFID technology in conjunction with warehouse management systems. Article also deals with automatic identification and data capture technologies and each processes, which are used in warehouse management system. It describes processes from entering goods into production to identification of goods and also palletizing, storing, bin transferring and removing goods from warehouse. Article focuses on utilizing AMP middleware in WMS processes in Nowadays, the identification of goods in most warehouses is carried through barcodes. In this article we want to specify, how can be processes described above identified through RFID technology. All results are verified by measurement in our AIDC laboratory, which is located at the University of Žilina, and also in Laboratory of Automatic Identification Goods and Services located in GS1 Slovakia. The results of our research bring the new point of view and indicate the ways using of RFID technology in warehouse management system.
A Traveller Information System: Minimisation of the Number of Graphs’ Nodes Involved When Processing Route Requests
Authors: Bendaoud Zakaria , Bouamrane Karim 
Published: May 2015

Abstract
The number of people using public transport is continuously increasing. Transport companies want to fulfil travellers’ expectations wherever possible. However, the great number of public transport companies operating in the same area can sometimes confuse travellers as to which route they should take and how to obtain the information relative to their journey. In this paper we suggest integrating several traveller information systems from different companies into the same multimodal information system, offering companies the choice not to share their data. This encourages them to join the system. Additionally, we have minimised the number of nodes involved when processing travellers’ requests in order to simplify the calculation process. To put our plan into action, we have opted for a multi-agent system coupled with the Voronoi decomposition for managing the network.
Oil Pollution in the Southeastern Baltic Sea in 2009-2011
Authors: Lavrova O. Yu. , Mityagina M.I. , Kostianoy A.G. , Semenov A.V. 
Published: May 2015

Abstract
From January 2009 to April 2012 a satellite survey of the central and southeastern parts of the Baltic Sea was carried out by the Space Radar Laboratory at the Space Research Institute of Russian Academy of Sciences (RAS). The main attention was focused on the detection of oil pollution as well as biogenic and anthropogenic surfactant films. The basic data are high resolution radar images obtained by advanced synthetic aperture radar (ASAR) on board of the Envisat satellite of the European Space Agency. Remotely sensed data in visual and infrared (IR) bands acquired by sensors MERIS Envisat, MODIS-Terra and -Aqua, and AVHRR NOAA nearly simultaneously with the ASAR images, were processed and analysed in order to facilitate the discrimination between different types of surface pollutants, to understand a comprehensive features of meteorological and hydrodynamic processes in the sea area of investigation, and to reveal factors determining pollutants spread and drift. The regions of the most intense oil pollution are outlined.
Major Accident Prevention Risk Communication Effectiveness: A Survey in the Czech Republic
Authors: Řeháček Jakub , Dlabka Jakub , Baudišová Barbora , Danihelka Pavel 
Published: May 2015

Abstract
An effective communication among authorities, citizens and industry is crucial to ensure good awareness of risk and knowledge of adequate reactions in preparedness to major industrial accidents. The present risk communication system in Czech Republic was evaluated by a nationwide survey. The main research was focused on the level of knowledge about risks and appropriate reactions to an accident and on the attitudes towards existing risk communication system. The results of survey indicate that the current system is insufficient and has to be improved to fulfill the requirements of the new Seveso III directive (2012/18/EU) and to secure safety of the citizens.
Prophétie biblique et prophétie coranique
Authors: Chéno Rémi 
Published: May 2015

L’islam se donne comme figure de totalisation et revendique une compréhension totale et extensive du monde. La prophétie y accomplit la loi originaire, le décret divin créateur dont la connaissance constitue un retour au sens premier, caché, toujours antérieur, toujours déjà donné. Le christianisme, en sens contraire, attend un accomplissement de tout l’humain dans le Christ, nouvel Adam qui récapitule la création. L’œuvre de l’Esprit renvoie à un « excès » ou à un « surplus » eschatologique toujours à venir et pas encore donné, sinon en figure dans le Christ.
Cracked tooth diagnosis and treatment: An alternative paradigm
Authors: Mamoun John S. , Napoletano Donato 
Published: May 2015

ABSTRACTThis article reviews the diagnosis and treatment of cracked teeth, and explores common clinical examples of cracked teeth, such as cusp fractures, fractures into tooth furcations, and root fractures. This article provides alternative definitions of terms such as cracked teeth, complete and incomplete fractures and crack lines, and explores the scientific rationale for dental terminology commonly used to describe cracked teeth, such as cracked tooth syndrome, structural versus nonstructural cracks, and vertical, horizontal, and oblique fractures. The article explains the advantages of high magnification loupes (×6–8 or greater), or the surgical operating microscope, combined with co-axial or head-mounted illumination, when observing teeth for microscopic crack lines or enamel craze lines. The article explores what biomechanical factors help to facilitate the development of cracks in teeth, and under what circumstances a full coverage crown may be indicated for preventing further propagation of a fracture plane. Articles on cracked tooth phenomena were located via a PubMed search using a variety of keywords, and via selective hand-searching of citations contained within located articles.
Bufalin Induces Apoptosis of MDA-MB-231 Cell Through Activation of JNK/p53 Pathway
Authors: Jian-Yang Hu  , Min-Feng Chen  , Xue-Ping Lei  , Zhen-Jian Zhuo  , Hai-Yan Sun  , Zhe-Sheng Chen  , Zhi Shi  , Dong-Mei Zhang  , Wen-Cai Ye  
Published: May 2015

Cinobufacini has been widely used at oncology clinics in China to treat many kinds of cancers and bufalin is one active compound of it, but the anti-cancer effect and the underlying mechanisms of bufalin on breast cancer cells are still unclear. Our study demonstrated that bufalin could effectively decrease the viability of MDA-MB-231 cells with IC50 values of 152.2 ± 8.0 nM for 24 h and 22.4 ± 2.3 nM for 48 h, respectively. Further study showed that bufalin could trigger MDA-MB-231 cells to undergo apoptosis with up-regulating protein expression of p-JNK/JNK, p53, p-ERK/ERK, Puma and down-regulating protein expression of Bcl-2, supporting the possible application of bufalin to breast cancer treatment.