bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extraction of Cu(II) with Acorga M5640 using hollow fibre liquid membrane
Authors: Agarwal Shiva , Reis M. Teresa A. , Ismael M. Rosinda C. , Carvalho Jorge M. R. 
Published: April 2015

AbstractThe extraction of copper from sulphuric/sulphate solutions using a hollow fibre module as contactor was studied. The aldoxime Acorga M5640 was used as an extractant. The effects on the extraction rate of the flow-rates, the concentrations of copper and extractant, pH, and the presence of Na2SO4 in the feed phase were investigated. The overall mass transfer coefficient for copper extraction was calculated from the experimental data and was compared with the value evaluated by the resistance in the series model. The extraction process was found to be governed by the diffusion in the boundary aqueous layer and also by the chemical reaction. The kinetic data obtained were used to simulate the extraction of copper with the pseudo-emulsion-based hollow fibre with strip dispersion technique. The accordance between the results thus calculated and the experimental data was found to be satisfactory, particularly for dilute feed solutions.
β-Cyclodextrin as water-solubility enhancer for butylated hydroxytoluene
Authors: Lukasiewicz Marcin , Kowalski Stanislaw , Ptaszek Anna , Ptaszek Pawel 
Published: April 2015

AbstractThe phenomenon of the increase in solubility of the non-polar phenolic antioxidant - butylated hydroxytoluene (BHT) - in aqueous solutions containing β-cyclodextrin (CD) was studied. The complexation of BHT by CD was investigated using a phase solubility study. This method makes it possible to calculate the apparent formation constant for the host-guest complex. In addition, the thermodynamic properties were evaluated, revealing a spontaneous endothermic process of complex formation. Two solubility models were also used to verify their applicability to predicting the BHT concentration in solution. Those models included the modified Apelblat and Buchowski-Ksiazczak equations. In order to investigate the antioxidant properties of the BHT/CD/water ternary systems, a radical scavenging activity using a DPPH stable radical was performed. The experiments indicated that the antioxidant activity is temperature- and CD concentration-dependent. It was shown that complexation may inhibit the radical scavenging by BHT or change the scavenging stoichiometry.
Effect of alkylated diphenylamine on thermal-oxidative degradation behavior of poly-α-olefin
Authors: Chao Mian-Ran , Li Wei-Min , Zhu Li-Li , Ma Hai-Hong , Wang Xiao-Bo 
Published: April 2015

AbstractAn oil-soluble antioxidant, alkylated diphenylamine (ADPA), was prepared by alkylation of diphenylamine. The influence of ADPA on the thermal-oxidative stability of poly-α-olefin (PAO8) was evaluated by thermogravimetry (TG). For comparison, the thermal-oxidative stability of PAO8 with zinc dialkyl dithiophosphate (ZDDP) was also investigated. Activation energy (E
Specifics of soil temperature under winter oilseed rape canopy
Authors: Krčmářová Jana , Středa Tomáš , Pokorný Radovan 
Published: April 2015

Abstract
The aim of this study was to evaluate the course of soil temperature under the winter oilseed rape canopy and to determine relationships between soil temperature, air temperature and partly soil moisture. In addition, the aim was to describe the dependence by means of regression equations usable for pests and pathogens prediction, crop development, and yields models. The measurement of soil and near the ground air temperatures was performed at the experimental field Žabiče (South Moravia, the Czech Republic). The course of temperature was determined under or in the winter oilseed rape canopy during spring growth season in the course of four years (2010 - 2012 and 2014). In all years, the standard varieties (Petrol, Sherpa) were grown, in 2014 the semi-dwarf variety PX104 was added. Automatic soil sensors were positioned at three depths (0.05, 0.10 and 0.20 m) under soil surface, air temperature sensors in 0.05 m above soil surfaces. The course of soil temperature differs significantly between standard (Sherpa and Petrol) and semi-dwarf (PX104) varieties. Results of the cross correlation analysis showed, that the best interrelationships between air and soil temperature were achieved in 2 hours delay for the soil temperature in 0.05 m, 4 hour delay for 0.10 m and 7 hour delay for 0.20 m for standard varieties. For semi-dwarf variety, this delay reached 6 hour for the soil temperature in 0.05 m, 7 hour delay for 0.10 m and 11 hour for 0.20 m. After the time correction, the determination coefficient (R2) reached values from 0.67 to 0.95 for 0.05 m, 0.50 to 0.84 for 0.10 m in variety Sherpa during all experimental years. For variety PX104 this coefficient reached values from 0.51 to 0.72 in 0.05 m depth and from 0.39 to 0.67 in 0.10 m depth in the year 2014. The determination coefficient in the 0.20 m depth was lower for both varieties; its values were from 0.15 to 0.65 in variety Sherpa. In variety PX104 the values of R2 from 0.23 to 0.57 were determined. When using multiple regressions with quadratic spacing (modelling of hourly soil temperature based on the hourly near surface air temperature and hourly soil moisture in the 0.10-0.40 m profile), the difference between the measured and modelled soil temperatures in the depth of 0.05 m was -3.92 to 3.99°C. The regression equation paired with alternative agrometeorological instruments enables relatively accurate modelling of soil temperatures (R2 = 0.95).
Comparison of two methods of erosive rains determination
Authors: Středová Hana , Krása Josef , Štěpánek Petr , Novotný Ivan 
Published: April 2015

Abstract
Number of erosive rains, kinetic energy of erosive rains and factor of erosive efficiency of rains according to the USLE methodology were assessed by two methods of erosive rains determination. The first method (VAR1) defined erosive rains by intensity ≥ 0.4 mm· min-1; total ≥ 12.5 mm and the second method (VAR2) by intensity ≥ 6 mm· 15 min-1; total ≥ 12.5 mm. Database contained one minute precipitation data from four automatic stations in the Czech Republic for the period of 2000-2005. Two-way analysis of variance (ANOVA) showed a statistically highly significant difference between the annual number of erosive rains determined by the two methods. The rains simultaneously complying with two following criteria (30 min intensity lower than 15 mm·h−1 and sum of 40 mm) were not generally classified as erosive rains according to VAR2. The number of erosive rains determined by VAR2 most often reached 40 to 50% of VAR1 results. Two-way ANOVA proved highly significant differences between the kinetic energy values for the erosive rains determined by VAR1 a VAR2. According to VAR2 the rains with kinetic energy lower than 3 MJ·ha −1 are generally not considered as erosive rains. The results of kinetic energy of the erosive rains determined by VAR2 most often reached 60 to 70% of VAR1 results. Two-way ANOVA has not proved a statistical difference between annual values of R factor of erosive rains determined by the two methods. According to VAR2 the rains with R factor lower than 5 are in general not included into annual R factor value. The results of annual R factor values of erosive rains determined by VAR2 are about 25% lower than the results of VAR1. Correlation between number of erosive rains, kinetic energy of erosive rains and annual R factor value assessed by both methods showed a statistically significant relationship. The conversion formulas between results of the two methods (VAR1 and VAR2) were derived by linear regression. As conclusion we can state that when using present automatic stations in R factor analyses, we have to be aware of overestimating the erosivities compared to historical data based on ombrograms, where only low temporal resolution data were available.
Hydromagnetic dynamos in rotating spherical fluid shells in dependence on the Prandtl number, density stratification and electromagnetic boundary conditions
Authors: Šoltis Tomáš , Šimkanin Ján 
Published: April 2015

Abstract
We present an investigation of dynamo in a simultaneous dependence on the non-uniform stratification, electrical conductivity of the inner core and the Prandtl number. Computations are performed using the MAG dynamo code. In all the investigated cases, the generated magnetic fields are dipolar. Our results show that the dynamos, especially magnetic field structures, are independent in our investigated cases on the electrical conductivity of the inner core. This is in agreement with results obtained in previous analyses. The influence of non-uniform stratification is for our parameters weak, which is understandable because most of the shell is unstably stratified, and the stably stratified region is only a thin layer near the CMB. The teleconvection is not observed in our study. However, the influence of the Prandtl number is strong. The generated magnetic fields do not become weak in the polar regions because the magnetic field inside the tangent cylinder is always regenerated due to the weak magnetic diffusion.
The iterative complex demodulation applied on short and long Schumann resonance measured sequences
Authors: Ondrášková Adriena , Ševčík Sebastián 
Published: April 2015

Abstract
The precise determination of instantaneous frequency of Schumann resonance (SR) modes, with the possibility of application to relatively short signal sequences, seems to be important for detailed analysis of SR modal frequency variations. Contrary to commonly used method of obtaining modal frequencies by the Lorentz function fitting of DFT spectra, we employ the complex demodulation (CD) method in iterated form. Results of iterated CD method applied on short and long measured sequences are compared. Results for SR signals as well as the comparison with Lorentz function fitting are presented. Decrease of frequencies of all first four SR modes from the solar cycle maximum to solar cycle minimum has been found using also the CD method.
Chanting with Benefits: Instrumental Trust and Familiarity among Members of Italian Soka Gakkai
Authors: Pezzi Maria Giulia 
Published: April 2015

Abstract
The article looks at an analysis of trust issues among Soka Gakkai members in Italy. The organization is made up of official members and neophytes, who interact on a daily basis in an informal environment, with a high degree of intimacy and familiarity. Trust among members can be considered a core issue, and is seen as being composed of an instrumental element. This paper deals with how this component influences relationships between members in terms of economic practices and mutual assistance. Starting from the assumption that Soka Gakkai affiliates are able to manipulate interactions in order to achieve goals which may not strictly comply with the aims of the organization itself, the article makes clear how the confidence created by the shared religious experience fosters frequent economic transactions, work affiliations and general economic support.
Familism as a Context for Entrepreneurship in Northern Italy
Authors: Ghezzi Simone 
Published: April 2015

Abstract
It would appear that the two simple dichotomies concerning the topics discussed in this article have been rejected in the last thirty years. The first is the assumption that preindustrial households were units of production, while industrial (urbanized and nuclear) households are mainly units of consumption. The second is the idea that the family enterprise, wrongly assumed to be an anachronistic form of the organization of production, should have played a marginal role in modern capitalism. The first dichotomy is briefly discussed by considering Parsonian and Weberian approaches that supported this view and its critique; the second is analyzed by looking at the shifting notion of industrial capitalism, from mass production to a less standardized and more flexible way of producing commodities in small firms. It will be argued that familism can still be regarded as a useful concept if deprived of its ideological connotation that can be traced back to Banfield’s questionable definition dating from the 1950s. Familism is the “missing link” between entrepreneurship and family enterprise. A case study in support of this view is presented by drawing on fieldwork research carried out in the Italian region of Lombardy.
Professional lobbyists as representative claim-makers. The cases of Poland and the Czech Republic
Authors: Vargovčíková Jana 
Published: April 2015

Abstract
This article looks at the ways in which political representation is used as a symbolic resource of legitimacy by those acting as intermediaries between the private and the public sectors- professional lobbyists. Drawing on the theoretical framework of Michael Saward, the article puts forward an analysis of whether, how and in relation to whom, lobbyists claim to be representatives so as to acquire a recognized position in the policy-making process. Representative claim-making by lobbyists matters, we argue, because it is an indicator of the status afforded by the public to private actors in politics. In the Czech and Polish cases, even though the invisible character of lobbying practices seems to limit the range of roles lobbyists can adopt in front of the general public, lobbyists mobilize representation as a resource both directly and indirectly when having to justify their involvement in public decision-making
Symbolic representation and the paradox of responsive performativity
Authors: Bíba Jan 
Published: April 2015

Abstract
The paper deals with the paradox of the incommensurability of the demands of responsiveness and performativity in representative democracy. To solve this puzzle, the paper first analyzes Pitkin’s concept of symbolic representation. Pitkin sees symbolic representation as a caricature of democracy because of its performativity, non-rationality and vagueness. The paper argues that these are indeed the key characteristics of every single representative act and that their presence does not make representation undemocratic. Using the work of Claude Lefort, the second part of the paper attempts to set out the conditions that would enable us to differentiate between the performativity of representation appropriate in a democratic society and the sheer falsification of the popular will. The paper claims that such a distinction would demand that we extend our understanding of representation to go beyond the relation between the representative and the represented and focus instead on the contestability of governmental claims to represent
Rethinking folklore as economical pattern: Overview of sustainable, creative and popular strategies in Italian domestic life
Authors: Giancristofaro Lia 
Published: April 2015

Abstract
The way in which folklorists study their “scientific subject”, that is the creativity and the rich ways people attach meanings to their existence, has often been considered to be static and decontextualized. An interest in popular culture for propaganda purposes is associated with past regimes. Therefore, the notion of “folklore” still carries contradictory meanings and connotations. The author starts from a debate prompted in Italy by Alberto M. Cirese: in recent decades, Italian “native” ethnology has focused on endangered village traditions rather than opening itself up to new instances of cultural change. The main risk was misrepresenting the methodology proposed by Antonio Gramsci in 1929. Today Italian research into folklore places the subject of “folklore” in its broadest context, investigating developments in society associated with the shift from a peasant to an industrial society, and embarking on additional research domains through transnational cultures. This research draws on the growing interest in cultural heritage in the public sphere, and, simultaneously, draws on recent advances in the study of uses of culture and memory. The paper studies two aspects of daily life: pure yarn handmade clothes and ornaments, and long-life tomato sauce. The study concludes that contemporary everyday folklore takes on many free and unofficial forms that call for a renewed approach. To evaluate the multiplicity of folklore meanings and their capacity to integrate interactions between the traditional and the contemporary in specific contexts, the author explores the practicality of a new idea of folklore as sustainable, popular, domestic creativity using material and immaterial goods. This idea implies a rethink of the concept of heritage and of the complexity of its increasingly official, bombastic and rhetorical manifestations
Thermograpic study of upper extremities in patients with cerebral palsy
Authors: Lampe R. , Kawelke S. , Mitternacht J. , Turova V. , Blumenstein T. , Alves−Pinto A. 
Published: April 2015

AbstractTrophic disorders like reduced skin blood circulation are well−known epiphenomenon of cerebral palsy (CP). They can influence quality of life and can lead to skin damages and, as a consequence, to decubitus. Therefore, it is important to analyse temperature regulation in patients with CP. Thermal imaging camera FLIR BCAM SD was used to study the dependency of skin blood circulation in upper extremities of patients with CP on hand dominance, hand force and hand volume. The hand force was evaluated using a conventional dynamometer. The hand volume was measured with a volumeter. A cold stress test for hands was applied in 22 patients with CP and 6 healthy subjects. The warming up process after the test was recorded with the thermal camera. It was confirmed that the hands of patients warm up slower comparing to healthy persons. The patients’ working hands warm up faster than non−working ones. A slight correlation was established between the hand grip force of the working hands and their warm up time. No correlation was found between the warming up time and the volume of the hand. The results confirm our assumption that there is a connection of peripheral blood circulation to upper limb motor functions.
Aerial thermography from low-cost UAV for the generation of thermographic digital terrain models
Authors: Lagüela S. , Díaz−Vilariño L. , Roca D. , Lorenzo H. 
Published: April 2015

AbstractAerial thermography is performed from a low−cost aerial vehicle, copter type, for the acquisition of data of medium−size areas, such as neighbourhoods, districts or small villages. Thermographic images are registered in a mosaic subsequently used for the generation of a thermographic digital terrain model (DTM). The thermographic DTM can be used with several purposes, from classification of land uses according to their thermal response to the evaluation of the building prints as a function of their energy performance, land and water management. In the particular case of buildings, apart from their individual evaluation and roof inspection, the availability of thermographic information on a DTM allows for the spatial contextualization of the buildings themselves and the general study of the surrounding area for the detection of global effects such as heat islands.
Evaluation of allergic response using dynamic thermography
Authors: Rokita E. , Rok T. , Tatoń G. 
Published: April 2015

AbstractSkin dynamic termography supplemented by a mathematical model is presented as an objective and sensitive indicator of the skin prick test result. Termographic measurements were performed simultaneously with routine skin prick tests. The IR images were acquired every 70 s up to 910 s after skin prick. In the model histamine is treated as the principal mediator of the allergic reaction. Histamine produces vasolidation and the engorged vessels are responsible for an increase in skin temperature. The model parameters were determined by fitting the analytical solutions to the spatio-temporal distributions of the differences between measured and baseline temperatures. The model reproduces experimental data very well (coefficient of determination = 0.805÷0.995). The method offers a set of parameters to describe separately skin allergic reaction and skin reactivity. The release of histamine after allergen injection is the best indicator of allergic response. The diagnostic parameter better correlates with the standard evaluation of a skin prick test (correlation coefficient = 0.98) than the result of the thermographic planimetric method based on temperature and heated area determination (0.81). The high sensitivity of the method allows for determination of the allergic response in patients with the reduced skin reactivity.
Subsurface imaging for panel paintings inspection: A comparative study of the ultraviolet, the visible, the infrared and the terahertz spectra
Authors: Bendada A. , Sfarra S. , Ibarra−Castanedo C. , Akhloufi M. , Caumes J.−P. , Pradere C. , Batsale J.−C. , Maldague X. 
Published: April 2015

AbstractInfrared (IR) reflectography has been used for many years for the detection of underdrawings on panel paintings. Advances in the fields of IR sensors and optics have impelled the wide spread use of IR reflectography by several recognized Art Museums and specialized laboratories around the World. The transparency or opacity of a painting is the result of a complex combination of the optical properties of the painting pigments and the underdrawing material, as well as the type of illumination source and the sensor characteristics. For this reason, recent researches have been directed towards the study of multispectral approaches that could provide simultaneous and complementary information of an artwork. The present work relies on non−simultaneous multispectral inspection using a set of detectors covering from the ultraviolet to the terahertz spectra. It is observed that underdrawings contrast increases with wavelength up to 1700 nm and, then, gradually decreases. In addition, it is shown that IR thermography, i.e., temperature maps or thermograms, could be used simultaneously as an alternative technique for the detection of underdrawings besides the detection of subsurface defects.
Advances in CZTS thin films and nanostructured
Authors: Ali N. , Ahmed R. , Bakhtiar-Ul-Haq  , Shaari A. 
Published: April 2015

AbstractAlready published data for the optical band gap (Eg) of thin films and nanostructured copper zinc tin sulphide (CZTS) have been reviewed and combined. The vacuum (physical) and non-vacuum (chemical) processes are focused in the study for band gap comparison. The results are accumulated for thin films and nanostructured in different tables. It is inferred from the re- view that the nanostructured material has plenty of worth by engineering the band gap for capturing the maximum photons from solar spectrum.
Other-initiated repair in Siwu
Authors: Dingemanse Mark 
Published: April 2015

AbstractThis article describes the interactional patterns and linguistic structures associated with other-initiated repair in Siwu, a Kwa language spoken in eastern Ghana. Other-initiated repair is the set of techniques used by people to deal with problems in speaking, hearing and understanding. Formats for repair initiation in Siwu exploit language-specific resources like question words and noun class morphology. At the same time, the basic structure of the system bears a strong similarity to other-initiated repair in other languages. Practices described for Siwu thus are potentially of broader relevance to the study of other-initiated repair. This article documents how different prosodic realisations of repair initiators may index social actions and features of the speech event; how two distinct roles of repetition in repair initiators are kept apart by features of turn design; and what kinds of items can be treated as ‘dispensable’ in resayings. By charting how other-initiated repair uses local linguistic resources and yet is shaped by interactional needs that transcend particular languages, this study contributes to the growing field of pragmatic typology: the study of systems of language use and the principles that shape them.