bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Family of New Generation Miniaturized Impedance Analyzers for Technical Object Diagnostics
Authors: Hoja Jerzy , Lentka Grzegorz 
Published: April 2013

Abstract
The paper presents the family of three analyzers allowing to measure impedance in the range of 10 Ω<|Zx|<10 GΩ in a wide frequency range from 10 mHz up to 100 kHz. The most important features of the analyzer family are: miniaturization, low power consumption, low production cost, telemetric controlling and the use of an impedance measurement method based on digital signal processing (DSP). The miniaturization and other above-mentioned features of the analyzers were obtained thanks to the use of the newest generation of large-scale integration chips: e.g. “system on a chip” microsystems (AD5933), 32-bit AVR32-family microcontrollers and specialized modules for wireless communication using the ZigBee standard. When comparing metrological parameters, the developed instrumentation can equal portable analyzers offered by top worldwide manufacturers (Gamry, Ivium) but outperforms them on smaller dimensions, weight, a few times lower price and the possibility to work in a distributed telemetric network. All analyzer versions are able to be put into medium-volume production.
An Analysis of Deviations of Cylindrical Surfaces with the Use of Wavelet Transform
Authors: Stępień Krzysztof , Makieła Włodzimierz 
Published: April 2013

Abstract
Wavelet transform becomes a more and more common method of processing 3D signals. It is widely used to analyze data in various branches of science and technology (medicine, seismology, engineering, etc.). In the field of mechanical engineering wavelet transform is usually used to investigate surface micro- and nanotopography. Wavelet transform is commonly regarded as a very good tool to analyze non-stationary signals. However, to analyze periodical signals, most researchers prefer to use well-known methods such as Fourier analysis. In this paper authors make an attempt to prove that wavelet transform can be a useful method to analyze 3D signals that are approximately periodical. As an example of such signal, measurement data of cylindrical workpieces are investigated. The calculations were performed in the MATLAB environment using the Wavelet Toolbox.
Information Management Supporting Multimodal Transport Utilization in Virtual Clusters
Authors: Golińska Paulina 
Published: April 2013

Abstract
Companies are facing problems regarding reduction of their logistics costs. Good organization of transport processes can bring a lot of profits both economical and environmental. Companies participating in transport processes more often prefer to create temporary relations and form virtual cooperation networks than to keep traditional long-term contracts. The paper first defined problems of multimodal transport. The obstacles to development of virtual transport clusters are described. The main problems and requirements of the virtual cooperation in the area of transport processes are identified. The aim of the paper is to present the scope of information needed for the coordination of virtual transport clusters. Author describes approach to information management in virtual cluster based on agent technology.
Reducing Time Losses In Operational Actions Of A Food Production Lines
Authors: Lintilä Jukka , Takala Josu 
Published: April 2013

Abstract
Most of the companies are interested in developing their production processes. With production process development, companies can meet their customers demands better. Tight competition is one reason that forces companies to use their production equipment as efficiently as they can. Improved production processes result in cost savings, flexibility, and in opportunities to plan companies activities more efficiently. The purpose of this research is to examine and cut operational times in food production processes. Two production lines were chosen for closer examination: spread/butter production line and quark production line. The main focus was to prevent operational time losses in these production lines. Research is divided into two separate sections: theoretical and empirical part. Theoretical part formulates guidelines and theoretical basis which is then employed in the empirical part. The theoretical part discusses Lean management philosophy, OEE indicator, SMED and questionnaire research method that comes from the sense and respond theory. In the empirical section, SMED and questionnaire method are used to examine operational activities. The focus is in finding critical characteristics from the production line’s starting-, product change-, and closing-setups. Result was that certain characteristics can be found to be critical factors. Those characteristics are connected to operational time losses. Another result is, that SMED and questionnaire research method are an effective way to examine issues with production. Both methods produced similar results in finding development targets from the production line, hence the simultaneous use of both is beneficial, as additional confirmation for the first methods findings can be obtained by securing the result with the other one.
Comparison between whole-body MRI and Fluorine-18-Fluorodeoxyglucose PET or PET/CT in oncology: a systematic review
Authors: Ciliberto Mario , Maggi Fabio , Treglia Giorgio , Padovano Federico , Calandriello Lucio , Giordano Alessandro , Bonomo Lorenzo 
Published: April 2013

Abstract
Background. The aim of the article is to systematically review published data about the comparison between positron emission tomography (PET) or PET/computed tomography (PET/CT) using Fluorine-18-Fluorodeoxyglucose (FDG) and whole-body magnetic resonance imaging (WB-MRI) in patients with different tumours.
Methods. A comprehensive literature search of studies published in PubMed/MEDLINE, Scopus and Embase databases through April 2012 and regarding the comparison between FDG-PET or PET/CT and WB-MRI in patients with various tumours was carried out.
Results. Forty-four articles comprising 2287 patients were retrieved in full-text version, included and discussed in this systematic review. Several articles evaluated mixed tumours with both diagnostic methods. Concerning the specific tumour types, more evidence exists for lymphomas, bone tumours, head and neck tumours and lung tumours, whereas there is less evidence for other tumour types.
Conclusions. Overall, based on the literature findings, WB-MRI seems to be a valid alternative method compared to PET/CT in oncology. Further larger prospective studies and in particular cost-effectiveness analysis comparing these two whole-body imaging techniques are needed to better assess the role of WB-MRI compared to FDG-PET or PET/ CT in specific tumour types.
Long term follow-up report of cardiac toxicity in patients with multiple myeloma treated with tandem autologous hematopoietic stem cell transplantation
Authors: Kozelj Mirta , Zver Samo , Zadnik Vesna 
Published: April 2013

Background. Tandem autologous hematopoietic stem cell transplantation (ta-HSCT) is a standard treatment for multiple myeloma (MM). Patients receive a high-dose cyclophosphamide (CY), followed by two myeloablative cycles of melphalan (MEL). There are scarce data about long term cardiotoxicity.
Patients and methods. We studied 12 patients (62.25 ± 8.55 years) six years after the completion of MM treatment with ta-HCST. Late cardiotoxic effects were evaluated clinically and echocardiographically.
Results. None of the patients developed clinical signs of heart failure, all were in sinus rhythm and NT-pro BNP concentration was elevated (778 ± 902.76 pg/mL). The left ventricular (LV) size remained normal. The LV ejection fraction did not decrease (73.75 ± 5.67%, 69.27 ± 6.13%, p = NS). The LV diastolic function parameters (E, A, ratio E/A and A/a) did not change significantly. In tissue Doppler parameters we observed a nonsignificant decrease in Em (10.26 ± 2.63 cm/s, 7.57 ± 1.43 cm/s) and Sm velocities (8.7 ± 0.87 cm/s, 7.14 ± 1.17 cm/s, p = NS). The E/Em values were in an abnormal range (8.66 ± 1.05, 10.55 ± 2.03).
Conclusions. The treatment of MM with ta-HSCT, during which patients receive a high dose CY followed by two myeloablative cycles of MEL, causes mild, chronic, partially reversible and clinically silent cardiotoxic side-effects. However, ta-HSCT in patients with MM is a safe regarding cardiotoxic side effects, but, because of increasing life expectancy needs long term attention.
Importance of Prandial Glucose Regulation in the Management of Cardiovascular Complications in Type 2 Diabetes Mellitus
Authors: Străchinariu Rodica Teodora 
Published: April 2013

AbstractThere is a worldwide epidemic increase in the number of type 2 diabetes (T2DM)patients who frequently associate with cardiovascular disease (CVD). There are datasuggesting that glycemic control does not substantially reduce CVD risk buthyperglycemia increases the risk of CVD. This apparent paradox could be explainedby the role of post-prandial hyperglycemia in the pathogenesis of cardiovascularcomplications in T2DM. There is numerous evidences, both experimental andclinical, for this association but controversies on this topic persist. The aim of thispaper was to review the current literature regarding the role of postprandial glucosein the genesis of CVD in T2DM.
Numerical solution of fractionally damped beam by homotopy perturbation method
Authors: Behera Diptiranjan , Chakraverty Snehashish 
Published: April 2013

AbstractThis paper investigates the numerical solution of a viscoelastic continuous beam whose damping behaviours are defined in term of fractional derivatives of arbitrary order. The Homotopy Perturbation Method (HPM) is used to obtain the dynamic response. Unit step function response is considered for the analysis. The obtained results are depicted in various plots. From the results obtained it is interesting to note that by increasing the order of the fractional derivative the beam suffers less oscillation. Similar observations have also been made by keeping the order of the fractional derivative constant and varying the damping ratios. Comparisons are made with the analytic solutions obtained by Zu-feng and Xiao-yan [Appl. Math. Mech. 28, 219 (2007)] to show the effectiveness and validation of this method.
Testing endodontic sealers on human umbilical vein endothelial cells
Authors: Moldovan Marioara , Filip Adriana , Prejmerean Cristina , Prodan Doina , Alb Camelia , Pop Aniela , Ioana Baldea 
Published: April 2013

Abstract
The toxic potential of the endodontic sealers ingredients, especially the unreacted monomer, that can irritate the periapical tissue and interfere with the healing process, thus having a negative impact on the biocompatibility of the material. The aim of this study was to evaluate the influence of three experimental endodontic sealers on cells viability in vitro. Human umbilical vein endothelial cells (HUVEC) were used. The experiments were done with solid samples and extracts of sealers in artificial saliva and water. The experiments evaluated the cytotoxicity of the residual monomers that resulted from the tested composites. The decrease in cell viability was quantified by colorimetric measurement of formazan. The components of the sealers dissolved in artificial saliva and water were determined by high performance liquid chromatography (HPLC). The HUVEC are a novelty for testing the endodontic sealers biocompatibility, with certain advantages compared to other cell types used in the literature, e.g. HELA cells, fibroblasts. The data showed that cytotoxicity was directly linked with the unreacted monomer — 2-hydroxyethyl methacrylate (HEMA) present in these composites. Two of the three formulations had little or no cytotoxic effect, which makes them suitable for further testing in order to be used in endodontic treatment.
A Predictive Network Architecture for a Robust and Smooth Robot Docking Behavior
Authors: Zhong Junpei , Weber Cornelius , Wermter Stefan 
Published: April 2013

AbstractRobots and living beings exhibit latencies in their sensorimotor processing due to mechanical and electronic or neural processing delays. A reaction typically occurs to input stimuli of the past. This is critical not only when the environment changes (e.g. moving objects) but also when the agent itself moves. An agent that does not predict while moving may need to remain static between sensory input acquisition and output response to guarantee that the response is appropriate to the percept. We propose a biologically-inspired learning model of predictive sensorimotor integration to compensate for this latency. In this model, an Elman network is developed for sensory prediction and sensory filtering; a Continuous Actor-Critic Learning Automaton (CACLA) is trained for continuous action generation. For a robot docking experiment, this architecture improves the smoothness of the robot’s sensory input and therefore results in a faster and more accurate continuous approach behavior.
Statistical Modelling of the Resilient Behaviour of Unbound Granular Material
Authors: Van Aswegen Elsabe , Steyn Wynand J. Vdm. 
Published: April 2013

Abstract
The resilient behaviour of an unsaturated, unbound granular material is a primary input used in the mechanistic analysis of pavements incorporating such layers. Various models exist for the determination of the resilient behaviour, mainly based on the output of tri-axial laboratory testing. This paper describes an investigation where basic engineering properties such as grading, laboratory compaction characteristics and optimum moisture content are incorporated into the resilient behaviour model to quantify the effect of basic material properties on the resilient response of unsaturated, unbound granular materials. Such a resilient behaviour model will enable practitioners to estimate the behaviour of specific material, which might enable the use of available quality material that was discarded in the past. Data from tri-axial laboratory tests on materials originating from the Long Term Pavement Performance test sections are combined with basic engineering parameters of typical unbound granular material through a statistical modelling process to develop a model for predicting resilient behaviour, which can be used as a practical predictor of the expected behaviour during a Level 2 and/or Level 3 Mechanistic Empirical Pavement Design analysis. The work illustrates the process and the potential to develop a general resilient behaviour model for unbound granular materials incorporating saturation effects.
Dimethylarginine – biomarkers in progression of kidney disease / Dimetilarginini – biomarkeri u progresiji bubrežnih oboljenja
Authors: Cvetković Tatjana , Pavlović Radmila , Đorđević Vidosava , Stojanović Ivana , Veličković-Radovanović Radmila , Ignjatović Aleksandra , Stefanović Nikola , Živanović Slavoljub , Đorđević Vidojko 
Published: April 2013

Summary
Decreased nitric oxide (NO) production and/or impaired NO bioavailability may occur in patients with the chronic kidney disease (CKD), and could contribute to elevation of blood pressure, cardiovascular disease (CVD) and progression of renal injury in these patients. Free guanidinomethylated arginine residues occur endogenously as a result of proteolysis of post-translational methylated tissue proteins. The asymmetric dimethyl arginine (ADMA) is a competitive inhibitor of the nitric oxide synthase (NOS) enzymes. The kidney has a predominant role in ADMA elimination by combining two mechanisms; urinary excretion and metabolization of ADMA The degradation of ADMA is accomplished intracellularly by the enzyme dimethylarginine dimethylaminohydrolase (DDAH). ADMA is not only a uremic toxin, but also a strong marker of the endothelial dysfunction and atherosclerosis and a stronger independent predictor of all-cause mortality and cardiovascular outcome in patients with the chronic renal failure. There are at least four mechanisms that may explain the accumulation of ADMA in CKD: increased methylation of proteins, increased protein turnover, decreased metabolism by DDAH and impaired renal excretion. A strong positive correlation between symmetric dimethyl arginine (SDMA) and creatinine suggests that SDMA might be of value as a marker of the renal function. Reduced NO elaboration secondary to accumulation of ADMA and elevated inflammation may be important pathogenic factors for endothelial dysfunction in patients with the renal disease. Elevation of ADMA may be a missing link between CVD and CKD.
Nitric oxide – mediated signalization and nitrosative stress in neuropathology / Azot oksid – posredovana signalizacija i nitrozativni stres u neuropatologiji
Authors: Stojanović Ivana , Ljubisavljević Srđan , Stevanović Ivana , Pavlović Radmila , Cvetković Tatjana , Đorđević Vidosava B. , Pavlović Dušica , Vojinović Slobodan , Bašić Jelena 
Published: April 2013

Summary
Nitric oxide (NO) is an important signalling molecule in a variety of physiological processes. NO, a gas, is produced from L-arginine by different isoforms of the nitric oxide synthase and serves as mediator in important physiological functions, such as promoting vasodilation of blood vessels and mediating communication between nervous system cells. Contradictory to its physiologic actions, free radical activity of NO can cause cellular damage by the induction of nitrosative stress with significant implications on nervous system diseases. Although the mechanism of NOmediated neurodegeneration still remains unclear, numerous studies suggest its crucial role in modification of protein functions by nitrosylation and nitro-tyrosination. NO contributes to glutamate excitotoxicity, participates in organelle fragmentation, inhibits mitochondrial respiratory complexes and mobilizes zinc from the internal stores. Recently, NO has been emerged as a mediator of epigenetic gene expression and chromatin changes. Besides, NO is a key mediator in the regulation of inflammatory and immune response of the central nervous system. It is involved in down regulation of several aspects of CNS inflammation, but also has a dual role in that it is required for inflammation in some situations.
Functional Response TRAITS and Plant Community Strategy Indicate the Stage of Secondary Succession
Authors: Andrej Paušič , Andraž Čarni 
Published: April 2013

Abstract
Changes of species composition, plant community strategy and functional response trait turnover were studied in a succession from dry pastures to a forest community (oak-hornbeam forests). The following question was asked: are functional response traits and plant community strategies indicators of TAA (time since agricultural land use abandonment), thus of a specific succession stage.
Indirect gradient analysis (DCA) was used in order to observe the position of the relevés along the axis and to correlate it with TAA. It was found that the position of relevés on DCA axis 1 is our proxy for TAA. Correlations (Spearman’s rho) between the occurrence of plant functional traits and TAA were performed.
Low-growing herb species with scleromorphic leaves and green or red flowers are the predominant plant type on grassland areas, while plant species with digitate, hydro or mesomorphic leaves and white flowers typically prevail in forest. The proportion of chamaephytes increases immediately after land abandonment (afforestation). In a closed forest stand, there are many more herb species with vegetative propagation (bulbils). Herbal species in those stands most often reward pollinators with pollen. The ecological strategy of the entire plant community changes with spontaneous afforestation. On grassland, stress-tolerant species are dominant. After 10 years, the community is defined as CS and after 200 years as a community with a C-CS strategy.
Production of Biscuits With Higher Nutritional Value
Authors: Kārkliņa Daina , Gedrovica Ilga , Reca Marina , Kronberga Maija 
Published: April 2013

Abstract

Biscuits were prepared by substituting wheat flour with Jerusalem artichoke powder, which is a
widespread plant, and powder of cacao bean shells, which is a by-product of the cocoa bean refining
process. Both of these were added to biscuit dough. Biscuits were analyzed for physical
and chemical parameters. The results indicate that both materials contain highly valuable ingredients
for production of a new type of biscuits. Jerusalem artichoke powder and cocoa shells contributed
to fibre content, and the content of protein and fat changed. Also, the hardness and
colour of the biscuits differed compared to the control.
Autumn Migration Of The Thrush Nightingale (Luscinia Luscinia) In Northern Hungary
Authors: Kováts Dávid 
Published: April 2013

Abstract
Kováts D. 2012. Autumn migration of the Thrush Nightingale (Luscinia luscinia) in northern
Hungary. Ring 34: 23-36.
The autumn migration of the Thrush Nightingale was studied in Szalonna in northern Hungary in 1989-2010. Birds were mist-netted, ringed, aged, measured, weighed and fat scored. In total, 193 Thrush Nightingales were ringed during 22 years. Relations between arrival time and biometrical measurements were determined. Within the study period (6 August - 26 September) the migration curve was bimodal showing maximum on 22 August and 27 August. Immature birds arrived significantly earlier with lower body mass and shorter wing length and had more pointed wings in the first half of their passage. The distribution of fat score classes did not differ significantly between the early and late periods of the most intensive migration, although the mean of the deposited fat was the lowest during the peak of migration. Fat reserve distribution was bimodal in autumn suggesting that Thrush Nightingales probably start their journey from different breeding ranges (populations) or follow still undiscovered migration strategies of sex/age groups. The low proportion of recaptures proved that the area was not used as a stopover site or premigratory fattening area. Within 22 years of study, the median date of autumn migration of Thrush Nightingales shifted 7.9 days earlier, probably due to current climate change.
Comparability of Wing Length Measurements Based on Data Collected at two Twin Stations during Migration
Authors: Zaniewicz Grzegorz 
Published: April 2013

Abstract
Zaniewicz G. 2012. Comparability of wing length measurements based on data collected at
two twin stations during migration. Ring 34: 37-43.
Data collected during bird migration include measurements taken during ringing. The variety and quality of information, which these measurements can potentially provide, depend strongly on their accuracy and comparability.
The analysis of the comparability was made based on the measurements of wing length taken by different ringers during autumn migratory seasons at the southern Baltic coast. An experiment was run with the measurements taken from six passerine species during several (from 8 to 10, depending on the species) migratory seasons at two twin sites belonging to Mierzeja Wioelana station. Pearson’s correlation coefficient was used to evaluate how strongly the habits of different measurers influence the measurements taken. The results of this experiment show that correlations between the measurements collected at these two sites are strong and statistically significant for the Blackcap (Sylvia atricapilla), Garden Warbler (Sylvia borin), Robin (Erithacus rubecula) and Song Thrush (Turdus philomelos). However, for the Goldcrest (Regulus regulus) and Willow Warbler (Phylloscopus trochilus) the relations were not significant. The last species allow to consider other causes, independent from human factor, which are possibly responsible for the average wing length local variability. In such species, we still need to look closer at the potential sources of their differentiation, such as the preferences of habitat selection between sexes, populations, etc.