bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamics and consequences of water level fluctuations of selected lakes in the catchment of the Ostrowo-Gopło Channel
Authors: Piasecki Adam , Marszelewski Włodzimierz 
Published: May 2015

Abstract
The article discusses water level fluctuations in lakes and the associated changes in the lake surface and water resources in the years 1992-2011. On the basis of detailed field studies carried out in the hydrological year 2011, short-term and dynamic changes in the lakes’ hydrology were determined. Changes in hydrological lake types were evoked by unexpected hydro-meteorological situations, in particular high precipitation totals and sudden thaws in winter. The main symptom of the lake type change was the restoration, after nearly 10 years, of channels connecting the lakes. In addition, a strong interdependence was recorded in the difference between evaporation and precipitation, as well as the mean annual ranges of lake water levels in the years 1992-2010
RES-E Support Policies In The Baltic States: Development Aspect (Part I)
Authors: Bobinaite V. , Priedite I. 
Published: May 2015

Abstract
Despite quite similar conditions (natural resources) for electricity production from renewable energy sources (RES-E) in three Baltic States (Estonia, Latvia and Lithuania), significant differences exist in these countries as to the RES-E production volume. In Latvia this volume is the highest, while in Estonia and Lithuania it is half as high. One of the factors that determine the RES-E production volumes is support policies, which in the Baltic States are different. The main objective of this work was to analyze and compare these support policies. The results have shown that for rapid RES-E development the most effective policy is to be market-oriented (as in Estonia), whereas for more stable development such policy should be producer-oriented (as in Lithuania).
Frequency Arrangement For 700 MHz Band
Authors: Ancans G. , Bobrovs V. , Ivanovs G. 
Published: May 2015

Abstract
The 694-790 MHz (700 MHz) band was allocated by the 2012 World Radiocommunication Conference (WRC-12) in ITU Region 1 (Europe included), to the mobile service on a co-primary basis with other services to which this band was allocated on the primary basis and identified for the International Mobile Telecommunications (IMT). At the same time, the countries of Region 1 will be able also to continue using these frequencies for their broadcasting services if necessary. This allocation will be effective immediately after 2015 World Radiocommunication Conference (WRC-15). In order to make the best possible use of this frequency band for mobile service, a worldwide harmonized frequency arrangement is to be prepared to allow for large economies of scale and international roaming as well as utilizing the available spectrum in the best possible way, minimizing possible interference between services, facilitating deployment and cross-border coordination. The authors analyze different possible frequency arrangements and conclude on the frequency arrangement most suitable for Europe.
Changes in biochemical and functional parameters
for men during exercise
Authors: Cesnaitiene Vida Janina , Karanauskiene Diana , Zaicenkoviene Kristina , Stasiule Loreta 
Published: May 2015

Abstract
Benefits of physical activity are undeniable. The
aim of the present research was to determine the effects
of physical activity and age on cholesterol and glucose
levels in the blood, as well as changes in the functional
parameters of the cardiovascular system, during stepwise
increases in physical load for men employed in the same
place, but with different levels of physical activity. The
subjects were 95 military officers who were divided into
groups according to the level of physical activity of their
occupation, with veloergometry used as physical load.
Cholesterol and glucose levels in the blood were taken
as biochemical indices. The results showed that occupational
physical activity had a positive effect on biochemical
and cardiovascular functional parameters before,
during, and after the physical load. Only the cardiovascular
rate (systolic blood pressure) in older subjects was significantly
higher than that of the younger persons; for all
other parameters, age had no effect at all.
Inclusion body myositis – pathomechanism and lessons from genetics
Authors: Murnyák Balázs , Bodoki Levente , Vincze Melinda , Griger Zoltán , Csonka Tamás , Szepesi Rita , Kurucz Andrea , Dankó Katalin , Hortobágyi Tibor 
Published: May 2015

Abstract
Inclusion body myositis is a rare, late-onset
myopathy. Both inflammatory and myodegenerative
features play an important role in their pathogenesis.
Overlapping clinicopathological entities are the familial
inclusion body myopathies with or without dementia.
These myopathies share several clinical and pathological
features with the sporadic inflammatory disease.
Therefore, better understanding of the genetic basis and
pathomechanism of these rare familial cases may advance
our knowledge and enable more effective treatment
options in sporadic IBM, which is currently considered a
relentlessly progressive incurable disease.
Urgent arterial embolization of ruptured renal angiomyolipoma
Authors: Kervancioglu Selim , Yilmaz Feyza 
Published: May 2015

Abstract
The most undesired complication of renal angi-
omyolipoma (AML) is bleeding. Because of tumor rupture,
the bleeding can spread to the retroperitoneal field and
can be severe enough to be life threatening. We report a
case of retroperitoneal hemorrhage caused by a ruptured
AML that was successfully treated with transarterial
embolization with N-butyl cyanoacrylate.
Effect of puerarin on human choriocarcinoma cells
Authors: Bao Lidao , Wang Yi , Ma Ruilian , Ren Xianhua , Lv Haijun , B Agula 
Published: May 2015

Abstract
Objective: To discuss the effect of puerarin
on human choriocarcinoma cells. Methods: Survival
rates under puerarin monotherapy, fluorouracil (5-FU)
monotherapy and puerarin in combination with 5-FU
were detected by MTT assay. Apoptotic morphology was
observed with Hoechst 33258 staining. Apoptosis rates
were detected with flow cytometry. Expressions of AKT,
mechanistic target of rapamycin (mTOR), and P70S6K
mRNAs and phosphorylated proteins were detected by
RT-PCR and Western blot. Tumor-bearing mice were
administered puerarin and puerarin+5-FU, and serum
levels of β-human chorionic gonadotropin (β-HCG) were
measured. Results: Proliferation inhibition and apoptosis
rates of JEG-3 cells were positively correlated with puerarin
concentration, which increased in the puerarin+5-FU
group. Expression levels of AKT, mTOR, P70S6K mRNAs,
and phosphorylated proteins decreased significantly
after action of puerarin at different concentrations.
With increasing puerarin concentration, expression
of cleaved-caspase-3 in JEG-3 cells increased, whereas
that of Bcl-2 decreased. Puerarin significantly inhibited
tumor growth in choriocarcinoma-bearing SCID mice.
Serum β-HCG levels were significantly lower than those of
control group after administration. Magnitude of β-HCG
decline was positively correlated with concentration.
Conclusion: Puerarin+5-FU inhibited proliferation of JEG-3
choriocarcinoma cells and promoted their apoptosis,
being associated with the mTOR signaling pathway.
The Static Unbalance Analysis and Its Measurement System For Gimbals Axes of an Inertial Stabilization Platform
Authors: Yang Hui , Zhao Yan , Li Min , Wu Falin 
Published: May 2015

Abstract
To reduce the influence of the static unbalance on an infrared missile guidance system, a new static unbalance measure system for the gimbals axes has been developed. Considering the coupling effects caused by a mass eccentricity, the static balance condition and measure sequence for each gimbal axis are obtained. A novel static unbalance test approach is proposed after analyzing the dynamic model of the measured gimbal axis. This approach is to drive the measured gimbal axis to do sinusoidal reciprocating motion in a small angle and collect its drive currents in real time. Then the static unbalance of the measured gimbal axis can be obtained by the current multi-cycle integration. Also a measuring system using the proposed approach has been developed. A balanced simulator is used to verify the proposed approach by the load and repeatability tests. The results show the proposed approach enhances the efficiency of the static unbalance measurement, and the developed measuring system is able to achieve a high precision with a greater stability.
The Investigation of Conductive Via Properties
Authors: Jurkow Dominik , Dorczynski Mateusz , Golonka Leszek 
Published: May 2015

Abstract
The investigation ofthe Low Temperature Co-fired Ceramic (L TCC) via filling process quality is presented in this paper. The goal of this paper was to propose and to validate a way of the verification whether the L TCC fabrication was conducted correctly. The work presents an application of the Design of the Experiment (DoE) methodology in such validation and discusses usefulness and drawbacks of the chosen solution. The optimized technology of via filling will be applied in the fabrication of tactile displays for blind people.
An Analysis Of Tensile Test Results to Assess the Innovation Risk for an Additive Manufacturing Technology
Authors: Adamczak Stanisław , Bochnia Jerzy , Kaczmarska Bożena 
Published: May 2015

AbstractThe aim of this study was to assess the innovation risk for an additive manufacturing process. The analysis was based on the results of static tensile tests obtained for specimens made of photocured resin. The assessment involved analyzing the measurement uncertainty by applying the FMEA method. The structure of the causes and effects of the discrepancies was illustrated using the Ishikawa diagram. The risk priority numbers were calculated. The uncertainty of the tensile test measurement was determined for three printing orientations. The results suggest that the material used to fabricate the tensile specimens shows clear anisotropy of the properties in relation to the printing direction.
An Outline on Physical Training Quality Features Related to Coaching Roles in Peak Performance Activities
Authors: Hulpus Ioan Alexandru 
Published: May 2015

Abstract
The growth of sports accompanied by the increasing number of quality competitions have become a matter of interest for those involved with the study of methodological and theoretical approaches with application in sports and performance activities. No organization or activity, regardless of their profile, can achieve a high level of efficiency on their own, disregarding basic management element, rules, principles, laws, techniques and methods. Due to social needs they meet and their purpose, the activities in sports organizations, among which training stands top priority, claim a leader. A coach must be both manager and leader, be an inspiration for his team and a supervisor as well. He has to be disciplined, in good balance, a thorough assessor of people and activities, very efficient by his capacity to scout talent in people and make the best of it.
Authenticity Tests of White Wines From the Apold Depression
Authors: Lengyel Ecaterina , Sikolya László 
Published: May 2015

Abstract
This paper aims at establishing distinctive elements regarding the authenticity of the following wines from the Apold vineyard: Sauvignon blanc, Fetească regală and Chardonnay. The paper aims at reviewing the color-giving components specific to white wines. Thus, through HPLC methods, we identified and quantified phenolic compounds which, in the end, presented total values between 86.085 mg/L and 89.272 mg/L. The present study also demonstrates the authenticity of these wines through spectrophotometric methods employed to determine the color of white wines. Based on the results obtained, we established that the studied wines are authentic, as the values resulted from the calculations in the procedure range between 0.015 and 0.019.
Microbiological Characterization of Red and White Wines Originated From Vineyards of Getic Piedmont
Authors: Stegăruș Diana Ionela 
Published: May 2015

Abstract
The aim of the present paper is to investigate an objective microbiological analysis of the wine by identification of some parameters such as total amount of germs and yeastswhich are contained in the quality wines from Getic Piedmont namely: Bolovanu, Corcova, Drăgășani, Sâmburești, Segarcea, Ștefănești.The Getic Piedmont is a relict geomorphological relief unit with significant variations from the flat, low lands fragmented by moderately rough with strong fragmentation. We have selected by grouping the wines in grape varieties, white wines (Sauvignon, Chardonnay, Riesling) and red wines (Merlot, Cabernet, Pinot noir) which were tested by microbiological tests. The opinion that the bacteria level should be acceptable in red wines and the yeasts level in white wines were supported by literature. The presence of these micro-organisms have clear influence in wine validity, in principle they are not detectable in a biologically pure wine.
A Kalman Filter-Based Algorithm for Measuring the Parameters of Moving Objects
Authors: Dichev Dimitar , Koev Hristofor , Bakalova Totka , Louda Petr 
Published: May 2015

Abstract
One of the most complex problems in measuring equipment is related to the provision of the required dynamic accuracy of measuring systems determining the parameters of moving objects. The present paper views an algorithm for improving the dynamic accuracy of such measuring systems. It is based on the Kalman method. The algorithm aims to eliminate the influence of a number of interference sources, each of which is of secondary significance. However, their total effect can cause considerable distortion of the measurement signal. The algorithm model is designed for gyro-free measuring systems. It is based on one of the most widely used elements in the dynamic systems, namely the physical pendulum, due to which measuring systems of high dynamic accuracy and low cost can be developed. The presented experimental results confirm the effectiveness of the proposed algorithm with respect to the dynamic accuracy of measuring systems of this type.
Fluorescence imaging of hybrid nanostructures composed of natural photosynthetic complexes and reduced graphene oxide
Authors: Twardowska M. , Chomicki D. , Kamińska I. , Niedziółka-Jönsson J. , Maćkowski S. 
Published: May 2015

AbstractHerein, we describe the results of fluorescence microscopy imaging of peridinin-chlorophyll-protein (PCP) photosynthetic complex mixed with reduced graphene oxide (rGO). Upon incorporation of rGO the fluorescence image of PCP changes substantially from one characterized by uniform intensity towards a more complex pattern. The isolated bright spots feature up to ten times higher emission intensity compared to the fluorescence of PCP in the reference sample, where no rGO was added. The number of the bright spots increases with increasing rGO concentration. At the same time the fluorescence intensity away from the bright spots in the PCP/rGO hybrid system is quenched in comparison to the PCP – only reference.
Electrochemical Studies of Interactions Between Fe(II)/Fe(III) and Amino Acids Using Ferrocene-Modified Carbon Paste Electrode
Authors: Vatrál Jaroslav , Boča Roman 
Published: May 2015

Abstract
The electrochemical behavior of an Fe(II)/Fe(III) redox couple in the presence of various selected amino acids has been studied using ferrocene-modified carbon paste electrode at pH = 7.4. Because of Fe(II)/Fe(III) solubility issues at physiological pH, ferrocene was used as a source of iron. Anodic oxidation of iron (pH = 7.2) occurred at 0.356 V and cathodic oxidation at 0.231 V, both vs Ag|AgCl. Treatment of the voltammetric data showed that it was a purely diffusion-controlled reaction with the involvement of one electron. After addition of amino acids, potential shifts and current changes can be observed on the voltammograms. Cyclic voltammetry experiments revealed the capability of amino acids to change the electrochemical behavior of the Fe(II)/Fe(III) redox couple.
The Response of Artificial Aging to Sorption Properties of Biochar for Potentially Toxic Heavy Metals
Authors: Frišták Vladimír , Friesl-Hanl Wolfgang , Pipíška Martin , Micháleková Barbora Richveisová , Soja Gerhard 
Published: May 2015

Abstract
This paper evaluates the effect of simulated conditions of artificial aging on sorption capacity of two types of biochar. These were produced by slow pyrolysis from different feedstock - beech wood chips (BC A) and garden green waste residues (BC B). Cadmium served as a model for potentially toxic metals. Twenty freeze-thaw cycles were used to simulate physical aging. The determination of biochar physicochemical properties showed main changes in CEC and SA values of aged sorbents. The maximum sorption capacities of aged BC A sorbent were higher by about 26 % and aged BC B sorbent by about 20% compared to Qmax of non-aged biochar. Qmax of aged BC B peaked at 9.4 mg g-1 whereas BC A sorbed significantly less Cd. FT-IR analyses confirmed the changes in structural composition and content of functional groups on biochar surfaces. The artificial physical aging model was assessed as an efficient tool for investigation of natural weathering conditions.
The study of cobalt leaching from soils, sewage sludges and composts using a one-step extraction
Authors: Bożym Marta , Rajmund Agnieszka 
Published: May 2015

Abstract
The study evaluated the leaching of cobalt (Co) in soils fertilized with sewage sludge (SS) and composts depending on the extractant used. SS came from rural, mechanical–biological treatment plant in Dobrzeń, Lower Silesia region. In addition, those SS were processed by composting. Sludges and composts were used to fertilise the energy plants during lysimeter experiment conducted during 2008–2013. The overall, as well as extracted by H2O, 0.1M HCl and 1M HCl, 0.05M Na2EDTA and 0.1M Na2EDTA, content of Co in samples were analysed. Additionally, the impact of pH and organic matter (OM) content on the leachability of Co were researched. It was found that the soil samples were rich in Co. Its share slightly depended on fertilisation with SS and compost. Co leaching depends on the type and concentration of extractant. The highest content of Co were leched with 0.1 M Na2EDTA, and the lowest content with 0.1M HCl. Co concentration in H2O extracts was not determined as its content was below the limit of quantification. Leachability of Co in the analysed samples was influenced by the overall Co content as well as pH and OM content.
Solubility and the periodic table of elements
Authors: Gumiński Cezary 
Published: May 2015

Abstract
Interesting general tendencies of changes of solubilities of elements and groups of compounds may be observed when the corresponding solubility data are arrayed according to the increasing atomic number of the elements. Such trends are exemplified with the data of various systems (metallic and salt-water type) evaluated in several volumes of the IUPAC-NIST Solubility Data Series. The solubilities of elements in mercury as well as in liquid alkali metals, when ordered according their atomic numbers, change roughly in a corresponding way as the temperatures and energies of melting or boiling points of the elements. However, majority of transition metals dissolved in alkali metals are subject to some side reactions with nonmetallic impurities that may drastically elevate their concentration levels. The solubilities of intermetallic compounds in mercury depend primarily on the energies of formation of these intermetallics in the binary alloys and then on the dissolution energies of the component metals in mercury. It has been observed that the experimental solubilities of metal halates in water show quite well defined periodical changes. The arrayed solubility data of rare earth metal fluorides and chlorides in water display quite smooth changes with the increasing atomic numbers if the solutes are isomorphic. Some exceptions from the smooth changes for rare earth metal bromides and iodides are explained. These general observations are useful in evaluating and predicting solubilities in experimentally unknown systems.
On the crystallization kinetics of highly soluble salts
Authors: Balarew Christo , Tepavitcharova Stefka , Rabadjieva Diana , Kamburov Stojan 
Published: May 2015

Abstract
For the spontaneous crystallization of highly soluble salts, a sufficiently high concentration of certain ionic species (complexes) or clusters has to be created in the solution, so that their grouping could yield a suitable crystal nucleus in a reasonably short time. The lowest critical supersaturation needed for nucleation and the highest rate of crystallization are displayed by those salts whose complexes in the solution have analogues in the crystal structure of the crystallizing salt, i.e., when the structure and the composition of the complexes enable their incorporation into the crystal lattice of the crystallizing salt with minimum changes. From this point of view a crystallochemical nucleation mechanism for explaining the Ostwald step rule is advanced. Concerning the rate of crystallization this concept was confirmed by studies on the system Na+, Mg2+/Cl–, SO4
2–//H2O and by parallel Raman spectroscopic studies of the microstructure of these solutions. It was established that upon increasing the concentration of Mg2+ ions and respective lowering of the water activity in the solution, the variety of the SO4
2– complexes increases. A direct correlation was found between the presence of various SO4
2– associations and the rate of crystallization of the corresponding salts in these systems.
Terrestrial Laser Scanning (TLS) as a detection method of the natural river valley microtopography – case study of the Upper Biebrza
Authors: Brach Marcin , Chormański Jarosław 
Published: May 2015

Abstract
Terrestrial Laser Scanning (TLS) as a detection method of the natural river valley microtopography - case study of the Upper Biebrza. This paper concerns the use of Terrestrial Laser Scanning (TLS) methods and the Geographic Information Systems (GIS) analysis to determine microtopography of a natural river valley, case study of the upper Biebrza valley. The scientific problem analyzed in this paper is a morphology of the selected segments of the valley covered by sedge ecosystems which in natural stage form a characteristic tussocks from their root systems. In order to capture the microtopography it was necessary to remove vegetation from the selected areas, and then, for a five typical location, registration of its structure using the laser scanner. As a result the point cloud was generated for each of the selected area and after GIS analysis the microtopography was obtained in form of digital terrain model (DTM). The DTM of each area represents valleys microstructure possible to obtain by use of TLS (TLS DTM), is usually not registered by the Airborne Laser Scanning (ALS), and is the main reason of inaccuracy of the DTM obtained based on ALS. The resulting TLS DTM has been processed by various filtering methods to lower the noise and fill the voids from blocking the laser beam by a tussocks. Finally, this allowed to determine the spatial structure of each measurement field.