bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of ultrasound for cleaning of components of historical vehicles in Technical Museum in Brno
Authors: Rapouch K. , Mrázek M. 
Published: April 2021

Abstract
In the collections of Technical Museum in Brno, large number of historical vehicles is placed. During the operation, parts of their motors are being fouled. Frequently, they become even immobile (e. g. due to a fouled fuel system). In this case, the method using ultrasound with a suitable concentrate appears as the most suitable. In fact, ultrasound works also in inaccessible places with large efficiency. Not only the chosen solution influences the cleaning efficiency, but also parameters as time, bath temperature and ultrasound frequency. The cleaning process was evaluated according to the volume of removed dirt and by observing wettability change using the measuring of contact angle of a water drop. The ultrasound shock waves influence the surface to a certain extent also mechanically. That is why, the ultrasound effect on defects in the structure was observed. The aggressivity of cleaning concentrates was evaluated on the ground of determination of dissolved metals in the baths by ET AAS method.
Mineralogy and geochemistry of rare earth elements in the Moyil Valley alteration zones, Meshkinshahr (northwest Iran)
Authors: Naseri Hossain , Jamadi Mahnaz , Radmard Kaikhosrov , Alavi Ghafour 
Published: April 2021

Abstract
Sabalan Mountain (northwest Iran) witnessed intense volcanic activity during the Cenozoic (Plio-Pleistocene). The result of this manifests itself in the conical geometry of the Sabalan stratovolcano and ahigh hydrothermal gradient around it, which can be detected by geological phenomena such as hot springs, smoke gases and steam outlet pores. The high hydrothermal slope and upward migration of hot water in this area have caused extensive alteration zones in the host rocks. A mineralogical study of alteration zones in thewells drilled in the Moyil Valley to the northwest of Sabalan Mountain has revealed the presence of phyllic, argillic, calcitic and propylitic alterations in volcanic rocks (trachyandesite) and alteration phyllic and propylitic ones in monzonite rocks. In chondrite-normalised rare-earth-element diagrams, trachyandesite rocks exhibit an HREEs enrichment when compared to MREEs and LREEs in propylitic and calcitic alteration zones. This result can be explained by the acidic nature of hydrothermal fluids containing complex ions such as (SO-2, Cl-). The (La/Yb)cn, (La/Sm)cn and (Tb/Yb)cn ratios for argillic, phyllic, propylitic and calcitic alteration zones have revealed that they are higher in fresh rocks compared to altered rocks, suggesting the enrichment of HREEs in comparison to LREEs and MREEs. The anomalies of Eu do not change remarkably in the argillic and propylitic alteration zones of trachyandesite rocks; apparently, alteration hadno effect on them. Such behaviour reflects the presence of gold cations in Eu+3 formed at temperatures below 250°C. Eu anomalies increased in propylitic alteration zones in monzonite rocks and calciticand phyllic alteration zones in trachyandesiterocks.
Activated Carbon as a Support of Catalysts for the Removal of Nitrogen Oxides
Authors: Białas Anna , Szlendak Joanna , Czosnek Cezary , Motak Monika 
Published: April 2021

Abstract
Activated carbon was oxidised with concentrated nitric acid and impregnated with urea to form nitrogen-containing groups. Such a support was impregnated with cobalt, copper or silver nitrates to obtain catalysts for the selective catalytic reduction of nitrogen oxides with ammonia. Infrared spectra confirmed the formation of carboxylic and other organic oxygen-containing groups during oxidation. Nitrogen-containing species resulted from urea thermal decomposition. The metal-containing samples were hydrophilic. Cobalt and copper were present in the samples as small Co3O4 and CuO crystallites, while silver occurred in the form of large metallic crystallites, as seen from the X-ray diffraction patterns. Low temperature N2 sorption revealed that all samples were microporous solids, and the chemical and thermal treatment did not change their textural properties. The copper admixture caused the highest NO conversion, but worsened the selectivity and thermal stability of functionalised carbon support.
Synthesis and application of natural sorbents with silver nanoparticles in reducing the emission of odours
Authors: Olga Długosz , Kornelia Ptak , Jolanta Pulit-Prociak , Anita Staroń , Paweł Staroń , Jarosław Chwastowski , Krzysztof Szostak , Marcin Banach 
Published: April 2021

Abstract
The paper concerns the applicability of silver nanoparticles for reducing the emission of odours. Silver nanoparticles were successfully adsorbed on three different dolomitic limestone samples. In the next stage, wastewater from the meat industry was mixed with sorbents modified with a variable content of silver nanoparticles. After 4 days and 7 days, the concentration of ammonia was examined spectrophotometrically. Also, the degree of reduction of total odour concentration by olfactometric method was carried out. Depending on the concentration of the silver nanoparticles on the sorbents, the concentration of ammonia was 15-42 μg/cm3 for nAg content equal to 0.08%, while for sorbents containing approximately 36% of nAg the concentration of ammonia was 0.09-16 μg/cm3. A leaching test of nanosilver from sorbents confirmed that the particles were bound with the sorbents by strong bonds. The percentage of eluted silver increased from 0.67% to 11%, with increased initial concentrations of nAg on the sorbents from 0.18% to 0.37%.
Combining the cross-entropy algorithm and ∈-constraint method for multiobjective optimization
Authors: Ezzine Abdelmajid , Alla Abdellah , Raissi Nadia 
Published: April 2021

Abstract
This paper aims to propose a new hybrid approach for solving multiobjective optimization problems. This approach is based on a combination of global and local search procedures.
The cross-entropy method is used as a stochastic model-based method to solve the multiobjective optimization problem and reach a first elite set of global solutions. In the local search step, an ∈-constraint method converts the multiobjective optimization problem to a series of parameterized single-objective optimization problems. Then, sequential quadratic programming (SQP) is used to solve the derived single-objective optimization problems allowing to reinforce and improve the global results. Numerical examples are used to demonstrate the efficiency and effectiveness of the proposed approach.
Some results about Lipschitz p-Nuclear Operators
Authors: Bey Khedidja , Belacel Amar 
Published: April 2021

Abstract
The aim of this paper is to study the onto isometries of the space of strongly Lipschitz p-nuclear operators, introduced by D. Chen and B. Zheng (Nonlinear Anal.,75, 2012). We give some new results about such isometrics and we focus, in particular, on the case F = ℓ
p*.
Early Modern Dance and Theatre in Finland
Authors: Laakkonen Johanna 
Published: April 2021

AbstractEarly modern dancers established a foothold in theatres and opera houses from the 1910s onwards when the focus of many avant-garde theatre directors shifted from literary text to the actor’s body and its expressive potentialities. This article explores the interplay between early modern dance and theatre in Finland by focusing on three dance scenes that Maggie Gripenberg (1881–1976) composed for theatre and opera performances in Helsinki in the 1920s and 1930s. The developments in Finland will be connected with the international trends that Gripenberg and her Finnish collaborators absorbed from the West as well as from Russia. The article also suggests that by exploring early modern dance in the context of theatre and opera, it is possible to obtain a more balanced picture of the development of modern dance in Finland.
A Perspective on Teaching Contemporary Ballet
Authors: Marttinen Fox 
Published: April 2021

Abstract
Research on contemporary ballet teaching in Finland has focused on the pedagogic perspective, but work on the teaching content is scarce. In this article, I describe my pursuit to outline core elements of contemporary ballet through two pilot workshops. I present four elements that seemed meaningful in my teaching (improvisation, interpretation, partnering and off-balance) and their nexus with classical ballet. In addition, I share my experiences of teaching contemporary ballet using these core elements to vocational dance students at North Karelia College Outokumpu. Here, I address contemporary ballet as a part of the evolution of ballet, not as a combination of contemporary dance and classical ballet. The overall aim is to develop a method of teaching that equips dancers with the skills they need when performing and co-creating contemporary ballet.
Analysis of the Vibration Measurement and Reduction Possibilities in Linear Infrastructure for Vacuum Rail Technology
Authors: Korbiel Tomasz , Rumin Rafał , Blaut Jędrzej , Czerwiński Stefan , Kania Jan 
Published: April 2021

Abstract
The paper presents the concept of vibration measurement and reduction system for rails in hyperloop technology. It is based on the experience of measuring vibrations in high-speed rail, the first commercial magnetic rail, and vibration reduction systems for these rails. The authors outlined a conceptual vibration monitoring system based on the MQTT protocol and the vibration reduction method. The vibration reduction systems based on variable-characteristic silencers and solutions used in research centers, especially in CERNie and LIGO, were de-scribed.
The effects of the Treaty of Trianon on the pharmaceutical network
Authors: Mária Péter H. 
Published: April 2021

Abstract
The consequences of the border adjustments resulting from the Treaty of Trianon affected the entire Hungarian pharmaceutical network. Transylvania, Maramureș and East Banat became part of Romania and Hungary lost 102.813 km2 of its former territory. A Hungarian population of 1,662,000 (based on the 1910 census), 31.78% of the total population, came under Romanian rule. 477 Hungarian pharmacies were lost in 327 locations. Later, in the areas given to Romania, several pharmacies ceased to function due to the emigration of their owners and their staff. Romanian authorities issued 174 new pharmacy rights in the gained territories, bringing 65.5% of the pharmacies into Romanian hands. The Pocket Calendar of Pharmacists, published in Budapest in 1918 still lists the Transylvanian pharmacists, mentioning the name of their pharmacy and the place where they worked. Pharmacist almanacs (pocket calendars) published in later years no longer provided this information.
Improving the Management of Pediatric Upper Urinary Tract Infections at Odorheiu Secuiesc Hospital
Authors: Előd Koncsag-Szász , Uzonka Szőcs-Gazdi , Izabella Magyari , Réka Jancsó , Mária Szalai , Ildikó Molnár , Edina Máthé , Tímea Bodoni-Imre 
Published: April 2021

Abstract
The primary goal of our retrospective analysis was to check the correctness of the diagnosis, and to identify the potential diagnostic errors among patients coded with N10 diagnosis in 2009, 2014 and 2019 in the pediatric ward of Odorheiu Secuiesc Hospital; we also assessed protocol-adherence in treatment and prophylaxis, and changes in antibiotic resistance of the isolated E. coli strains.
During this 10 year-period significant improvements have been achieved in the treatment of upper urinary tract infections: in 2009 the diagnosis could be disputed in 31 out of 61 cases, while in 2019 this ratio is only 2 out of 31 cases; the number of cases pretreated with antibiotics decreased to a third, contaminated urine samples are rare to occur, the unmotivated antibiotics prophylaxis is essentially nonexistent, and there are no major documentation deficiencies either.
In our study we present the antibiotic susceptibility of 50 E. coli strains isolated from the study group, which suggests some favorable changes.
Effects of Shear Lag in Steel Box Girders of a Crane Runway
Authors: Moga Cătălin , Drăgan Delia , Nerișanu Raluca 
Published: April 2021

Abstract
The term of shear lag is related to the discrepancies between the approximate theory of the bending of beams and their real behaviour. It refers to the increases of the bending stresses near the flange-to-web junctions and the corresponding decreases in the flange stresses away from these junctions. In the case of wide flanges of plated structures, shear lag caused by shear strains, which are neglected in the conventional theory, may be taken into account by a reduced flange width concentrated along the webs of the steel girders. In EN 1993-1-5, the concept of taking shear lag into account is based on effective width of the flange which is defined in order to have the same total normal force in the gross flange subjected to the real transverse stress distribution as the effective flange subjected to a uniform stress equal to the maximum stress of the real transverse distribution. Some aspects concerning the shear lag phenomenon and a working example for a box girder of a heavy crane runway to illustrate the determination of the shear lag effect are also presented.
Research on Improving the Welding Behaviour of Stainless Steels in the Field of Welded Constructions by Using Mechanical Vibrations
Authors: Novac Bogdan 
Published: April 2021

Abstract
This paper presents a research that has been done on two types of stainless steels, one of Spanish origin and the other of Romanian origin. Both Spanish and Romanian stainless steels have been subjected to several tests, regarding the influence of vibrations on their mechanical properties and their welding behavior. The samples were made of welded stainless steels. They were subjected to a thermal hardening treatment at a temperature of 950 degrees, with a holding time of 4 hours in the presence of mechanical vibrations. Then comparative tests were performed on both stainless steels at: hardness, tensile test, resilience, microstructural analysis and determination of the longitudinal modulus of elasticity. The research has shown a reduction of the thermo-mechanically influenced area, which contributes to the achievement of a high quality welded joints.
Installation for Producing Mechanical Vibrations used in the Finishing of the Welded Joints Structure
Authors: Novac Bogdan 
Published: April 2021

Abstract
The paper presents a constructive version of a mechanical vibration generator designed to be used at stress relieving of welded joints. This installation can be used on all brands of steels and welded joints, whether they have magnetic properties or not. In the generator construction a DC motor was used, in order to be able to adjust the speed more easily. The speed adjustment is made with a potentiometer, and the speed measurement is made with a tachometer. The tachometer measures the speeds based on the pulses given by a four-pointed cam rotating between the plates of a capacitor. The vibration system also contains a piezoelectric accelerograph, which is attached to the welded part subjected to vibration, in order to measure the level of vibration and the parameters of the vibration wave.
Retained Water in the Commune of Gogounou in Benin: Inventory, Characterization and Management Mode
Authors: Sourogou Roger Masso , Hountondji Fabien. C. 
Published: April 2021

Abstract
The present work was carried out with the aim of knowing the characteristics and the management made of the agropastoral dams of the commune of Gogounou which are of a great utility for the local populations. To do this, twenty (20) dams were chosen according to the strategic interest that they present for the population, that is to say a polling rate of 87% on all the dams of the municipality. An inventory of the dams was made according to quantitative and qualitative indicators. The results showed the existence of (04) groups of dams according to the technical characteristics and some qualitative variables. The parameters that lead to the degradation of these dams are often related to the age and type of dam and the place of installation. Groups (2 and 4) are agropastoral dams (100%) and more than half of the dams are on flood sites. Results have also shown that there are management committees around all the dams in the commune of Gogounou, but which are mostly non-functional at almost 75%. Also, it has been found that the breeders are mostly transhumant and sedentary who use (100%) dams for watering animals. This cohabitation between farmers and pastoralists does not occur without major conflicts, in particular, that of land whose settlement is generally peaceful. In short, the management of the dams in the commune of Gogounou is a real challenge to be met for a better development, both economically and socially to guarantee the prosperity of the actors and prepare them to adapt to the vagaries of the climate future.
Examining associations between social media use, depression, global health, and sleep disturbance among emerging adults
Authors: Karaman Mehmet Akif 
Published: April 2021

Abstract
In recent years, social media use and its effects on mental health have been investigated many times. Mostly, studies focused less on the global health when addressing mental health. In this cluster analysis study, on a sample of 261 Turkish college students who were emerging adults, the associations between social media use and depression, sleep disturbance, and global health were tested. By using k-means cluster analysis, participants were divided into three groups: ordinary and none, mild, and severe social media users. The results indicated that male college students had higher social networking addiction than females. There was a significant and positive relationship between time spent on social media and depression and sleep disturbance. The results showed that mild level social media users differ statistically in global health and sleep disturbance from both ordinary/none and severe users. The results were similar with the previous published studies in different cultures and countries in the fields of mental health.
Slurs: Departures from Genuine Uses and Derogation
Authors: Belleri Delia 
Published: April 2021

Abstract
Some non-appropriated uses of slurs seem to be non–derogatory. In this paper, I argue that in a range of cases, the lack of derogation is owed to the term not being genuinely used. I first examine so–called pedagogical uses and show that they can be assimilated to what I call “distancing uses.” I then turn to a range of other apparently non–derogatory, non–appropriated uses of slurs – such as non–weapon uses, comedic uses – and argue that they can depart from standard, genuine usage in relevant ways. I finally turn to so–called “affectionate” uses, and show that, if the conditions in which they obtain can be described as standard, then they are derogatory because they are genuine uses, no matter the benevolent feelings of the speaker.
Recent (Re)Visions of Canlit: Partial Stock-Taking
Authors: Rzepa Agnieszka 
Published: April 2021

AbstractThis article approaches recent discussions on the state of contemporary CanLit as a body of literary texts, an academic field, and an institution. The discussion is informed primarily by a number of recent or relatively recent publications, such asTrans.CanLit. Resituating the Study of Canadian Literature(Kamboureli & Miki 2007),Refuse. CanLit in Ruins(McGregor, Rak & Wunker 2018),Luminous Ink: Writers on Writing in Canada(McWatt, Maharaj & Brand 2018), and the discussions and/or controversies some of those generated – expressed through newspaper and magazine articles, scholarly essays, but also through tweets, etc. The texts have been written as a response to the current state and – in some cases – scandals of CanLit. Many constitute attempts at starting or contributing to a discussion aimed at not only taking stock of, but also reinterpreting and re-defining the field and the institution in view of the challenges of the globalising world. Perhaps more importantly, they address also the challenges resulting from the rift between CanLit as implicated in the (post)colonial nation-building project and rigid institutional structures, perpetuating the silencings, erasures, and hierarchies resulting from such entanglements, and actual literary texts produced by an increasingly diversified group of writers working with a widening range of topics and genres, and creating often intimate, autobiographically inspired art with a sense of responsibility to marginalised communities. The article concludes with the example of Indigenous writing and the position some young Indigenous writers take in the current discussions.
The Post-Human Lyric: Diffractive Vision and the Ethics of Mattering in Adam Dickinson’s Anatomic
Authors: Ambroży Paulina 
Published: April 2021

Abstract
The aim of my inquiry is to discuss Adam Dickinson’s revisionist approach to the lyric autobiography as shown in his most recent volume Anatomic (2018a). Informed by an eco-critical sensibility, the biotechnological gaze, and post-humanist notions of subjectivity, this highly experimental conceptual project reveals porous boundaries of the autobiographical self caught up in the entanglement of the mind and matter. Based on burden tests of the poet’s own bodily fluids, Anatomic offers a philosophical speculation on the nature of the human, asking us to go beyond anthropocentric positioning of the subject and to consider ethical alongside onto-epistemological implications of this new direction. The methodology employed in my analyses of Dickinson’s poems derives from the influential notions of agential realism, diffractive vision, and intra-action formulated by Karan Barad – a trained quantum physicist and feminist philosopher working in the field of science and technology. Barad’s theories fuel New Materialist paradigms of thought as they propose the inherent indeterminacy of matter as well as question the established views of identity and the social. The particular focus of my interrogations will be the relationship between diffractive perception and the medical gaze used by the Canadian conceptualist to see himself non-anthropologically and thus to destabilize the perimeters of the autobiographical self.
Taking Root in Floating Cities – Space, Environment, and Immigrant Identity in Kerri Sakamoto’sFloating City
Authors: Antoniak Joanna 
Published: April 2021

AbstractHuman identity is shaped not only by culture, but also by nature – the environment in which people grow up and live, the places and spaces they visit, work in, and pass on an everyday basis. This people-place bond is particularly important in case of immigrants who are forced to abandon the places they know for a new – and often hostile – environment. This connection between space, environment, and immigrant identity is explored by Kerri Sakamoto, a Japanese-Canadian writer, in her newest novel,Floating City(2018). Focusing on the family narrative of the Hanesakas – and, in particular, the story of Frankie, the oldest son of the family – Sakamoto tells the story of shaping identity through forming a connection with the environment and architecture. The aim of this article is to discuss the way in which Sakamoto presents the people-place bond and its impact on immigrant identity as represented by the connection of the Japanese-Canadians with four elements: water, air, earth, and fire. Furthermore, the article analyses Sakamoto’s version of an alternative history of Toronto and the possible solutions to the current environmental crisis it brings. For this purpose, the author uses a mixture of methodological concepts stemming from postcolonial theory and environmental psychology, such as homing desire, rootlessness, place attachment, non-place, and the people-place bond.