bluuebunny/crossref_metadata_2025_split huggingface dataset:
Surface-capped copper nanoadditive for improvement of base oil properties
Authors: Shaon F , Rana AA , Masum SM , Ullah MA , Karim MM 
Published: March 2019

Copper nanoparticles surface-capped by alkanethiol with long carbon chain length was prepared successfully by chemical reduction method. 1-dodecanethiol was used as the coating material for the desired smooth and protected surface. Various reaction parameters, like effect of pH, molar ratio of the reactants etc. had been tested experimentally to explore the most suitable and economical way of using the chemical reduction method. Uniform, smooth surface and spherical shaped copper nanoparticles, with particle size of about 40-60 nm had been produced successfully. Copper nanoparticles surface-capped by alkanethiol (C12S-Cu) was characterized by means of x-ray diffraction, scanning electron microscopy, Fourier transform infrared spectrometry and ultraviolet-visible spectroscopy. Uniform dispersion of copper nanoadditive in base oil using ultrasonic method was investigated. The tribological behavior of C12S-Cu as an additive for base oil was evaluated. Viscosity, pour point, and flash point of nano lubricants at different concentrations of nanoadditive (0.2, and 0.5 wt %) were evaluated.
Bangladesh J. Sci. Ind. Res.54(1), 1-10, 2019
Synergic effect of recycled cotton fabric and wood saw dust reinforced biodegradable polypropylene composites
Authors: Islam MK , Sharif A , Hussain M , Hassan I 
Published: March 2019

Hybrid polymer matrix composites of waste cotton fabric and wood saw dust reinforcements were studied with a view to recycling the wastes from garments and carpentry industries. Polymer composites with cotton fabric and wood-saw-dust reinforcements were fabricated using hot press machine. Their physical, thermal and mechanical behaviors were discussed in terms of moisture absorption, thermal stability, tensile strength, elastic modulus, flexural strength and flexural modulus. Compositional analyses of fibers, matrix and composites were carried out with FTIR spectroscopy. Experimental results revealed that tensile and flexural strength of the composites increased with cotton fabric reinforcement. On the other hand, with increasing wood saw dust strength decreased up to a certain limit and then increased again. Water absorption of the hybrid composites increased substantially with increasing natural filler contents. Maximum water absorption was observed in 20% fabric/wood-saw-dust reinforced polymer composite. Furthermore, TGA graphs suggest better thermal stability of the hybrid composites than that of pure polypropylene.
Bangladesh J. Sci. Ind. Res.54(1), 21-30, 2019
Synthesis of solketal over zirconia based acid catalysts
Authors: Reena SS , Shamshuddin SMZ , Vasantha VT , D’Souza JQ 
Published: March 2019

Microwave assisted synthesis of ‘solketal’ over zirconia (ZrO2) and its modified forms (Mo(VI)/ZrO2, W(VI)/ZrO2 and V(V)/ZrO2) coated on honeycomb monoliths is reported. The solid acids were coated on honeycomb monoliths by ‘dip and dry’ method and characterized for their surface acidity, crystalinity, functionality, morphology and elemental analysis by using techniques such as NH3-Temperature programmed desorption (NH3-TPD), powder X-ray diffraction (PXRD), Fourier transform-infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Inductively coupled plasma-optical emission spectroscopy (ICP-OES). The honeycomb monoliths coated with solid acids were employed as catalysts in the condensation of glycerol with acetone to synthesize solketal under microwave irradiation conditions. The reaction conditions such as molar ratio of the reactants (glycerol: acetone), reaction temperature, reaction time were studied to obtain highest possible yield of solketal with greater selectivity. The catalytic activity of honeycomb catalytic material was compared with the powder forms of the catalysts. 98% yield of solketal with 98% selectivity was achieved over Mo(VI)/ZrO2 coated on a honeycomb monolith in a very shorter reaction time of 8 min at 60 oC under microwave heating. These honeycomb catalytic material were found to be easily reactivable and reusable atleast for 6 reaction cycles. Hence, honeycomb catalysts were found to be efficient, economical and effective in the synthesis of value added chemical such as solketal. A possible mechanism for the formation of solketal is proposed.
Bangladesh J. Sci. Ind. Res.54(1), 31-38, 2019
Sawdust-kaolinite composite as efficient sorbent for heavy metal ions
Authors: Ogbu IC , Akpomie KG , Osunkunle AA , Eze SI 
Published: March 2019

The improvement of the adsorption capacity of clay minerals using chemicals though effective is expensive, results in secondary contamination and noxious to the environment. This study was therefore aimed at the development of a new sawdust clay modified adsorbent (SDKC) as an alternative means of improving the adsorption capacity of kaolinite. The adsorbents were characterized by the Fourier transform infrared spectroscopy and X-ray diffraction analysis. Batch sorption was employed to determine the effect of pH, metal concentration, sorbent dose, time and temperature on the removal of Pb (II) and Cd (II) ions from solution by the adsorbents. Optimum operating conditions of pH 6.0, metal concentration 200mg/L, sorbent dose 0.1g was obtained. Equilibrium isotherm analysis indicated the Langmuir, Temkin and Flory-Huggins models to be more suitable than the Freundlich, Dubinin–Radushkevich (D-R). The kinetic data were analyzed using the pseudo-first order, pseudo-second order, the Elovich and intraparticle diffusion models. The analysis revealed that the adsorption process followed pseudo second order model. The calculated thermodynamic parameters showed an endothermic, spontaneous and a physisorption process between both metal ions and the adsorbents. The obtained result of the experiment indicated a significant improvement in the uptake of Pb (II) and Cd (II) ions on the sawdust modified kaolinite adsorbent than the untreated kaolinite clay. This could be utilized as an alternative to chemical treatment methods
Bangladesh J. Sci. Ind. Res.54(1), 99-110, 2019
Determinants of drought risk coping mechanisms among the farmers of Northern region of Bangladesh
Authors: Farid Kazi Shek , Tanny Nishith Zahan , Rahman Md Wakilur 
Published: March 2019

Drought is a major constraint on agricultural production and livelihood in the north-western region of Bangladesh. An understanding of the effects of drought and farmers’ coping mechanisms is essential in designing technological and policy interventions for effective drought mitigation. The current study investigates the impacts of drought, examines farmers’ coping strategies for drought induced crop failure and the determinants of their mechanism choices by employing both quantitative and qualitative approach. Multiple data sources, including semi-structured interview survey with 218 randomly selected farmers; and four focus group discussions with farmers, local leaders, NGO workers, and government officials were used to capture various aspects of drought risks and coping practices. ‘Multinomial logit’ model was adopted to analyze the factors affecting the decision of coping strategies in response to drought. Results of farm household survey data indicates that the respondents experienced 3.15 droughts on an average in last five years which affected about 15 percent of their crop land and resulted more than 17 percent crop loss per year. Focus group discussions confirm that farmers followed various traditional ex ante and ex post coping strategies in order to avoid crop loss and minimize livelihood constraints. The coping mechanisms mostly adopted by farmers among others were borrowing money, cultivating less water consuming crops and cutting meals. Findings of multinomial logistic regression model reveal that the environment determinant of the choices of coping options was frequency of drought and main socio-economic determinants of coping choices were crop loss due to drought and land holding systems.
J. Bangladesh Agril. Univ. 17(1): 58–64, March 2019
Genealogy of Shevchenko’s mother Kateryna Boyko
Authors: Karpinchuk Halyna 
Published: March 2019

The article explores the genealogy of Shevchenko’s mother Kateryna Boyko based on archival materials of the Central State Historical Archive of Ukraine in Kyiv, the State Archive of Kyiv Region and the State Archive of Cherkasy Region. The author investigated this family tree starting from the end of the 18th century and until 1859, when Shevchenko visited Ukraine for the last time. In particular, the history of the poet’s family in connection with his grandfather Omelian Boyko was analyzed. The assumption that family line of Shevchenko’s mother originates from Carpathian rebel and contemporary of Oleksa Dovbush Ivan Boyko was rejected. Some details about the closest relatives of T. Shevchenko, namely his uncle Pavlo, aunts Dariya, Yevdokiya and Anna, have been clarified. Information about two unknown writer’s aunts Varvara and Motria has been found.
The assertion that the mother’s family line lacked descendants was refuted. The surnames in marriage of the five Shevchenko’s aunts, having maiden surname Boyko, have been determined. They were Varvara Kryvenko, Motria Zavaliy, Dariya Diachenko, Yevdokiya Diadenko, Hanna Shkurup. By now we have information about forty nine poet’s cousins, seventy four nephews and three great-grandchildren of his aunts. The comprehensive analysis of the archival materials allows the researcher to deny the existence of Ahafiya Yakymivna Boyko, the alleged poet’s mother according to some media reports.
The article also refers to the administrative structure, nature and geography of the village Moryntsi in the first half of the 19th century. The life of Ukrainian peasants is discribed based on the story “Kniahynia” (“Princess”) by T. Shevchenko as well as archival documents and research works by V. Hrabovetskyi, V. Orlyk, L. Pohylevych, O. Stepanyshyna.
Shevchenko’s Grateful Readers from Dnieper Ukraine: Volodymyr Antonovych and Mykola Lysenko
Authors: Kharchuk Roxana 
Published: March 2019

This paper outlines the portrait of Shevchenko’s reader from the Dnieper Ukraine in the first half of the 19th century based on the example of two prominent figures of Kyiv (Old) “Hromada” Volodymyr Antonovych and Mykola Lysenko. The first one represented the intellectuals from the Right Bank Ukraine, the second one ‒ from the Left Bank part. Under the influence of the Ukrainian national renaissance Volodymyr Antonovych became de-Polonized. He was the first political Ukrainian who understood the significance of Shevchenko’s poetry for the formation of Ukrainian national identity (this is evidenced by his memoirs and promoting Shevchenko’s works). According to M. Starytskyi, Mykola Lysenko perceived “Kobzar” passionately. Not only did he become de-Russificated under the influence of Shevchenko’s poetry, but also made the music to “Kobzar” a matter of his life.
The author of the paper emphasizes that Shevchenko’s works urged the intellectuals from the Right and Left Bank Ukraine, disconnected after the Truce of Andrusovo, to unite in “Hromada” movement. At the same time the Left Bank intellectuals dominated in “Hromada”. On the researcher’s opinion, this fact may be explained by the high level of education in the Cossak Hetmanate Ukraine. “Kobzar” was a cornerstone for the educational program of Ukrainian ‘narodnyks’ and this whole intellectual movement was based on it. Shevchenko’s works essentially contributed to spreading the Ukrainian idea in Galicia.
There is an opinion, that it was the Galician people who separated the Ukrainian national identity from Russian, while in the Left Bank Ukraine both of these identities coexisted. The author of the paper believes that the intellectuals in both parts of Ukraine in 1860s-1870s had an indistinct national identity. Unlike the Galicians the intellectuals from Ukraine under Russian rule, in particular Volodymyr Antonovych, could not speak openly about Ukrainian self-sufficiency. However Shevchenko (born in the Right Bank Ukraine) was first among Ukrainian intellectuals to voice a thesis about the separation of Ukrainians from Russians, about the distinctive Ukrainian history, language and literature that differ from the Russian ones.
Ivan Franko’s Sketch of Drama “To Brazil”: from History of Unfinished ‘Emigrational’ Text
Authors: Hnatiuk Mykhailo , Shostak Olha 
Published: March 2019

The paper provides an analysis of I. Franko’s unfinished drama “To Brazil” that deals with the first wave of the Ukrainians’ emigration, especially events of Brazilian Rush in 1895–1897. Since the literary text is based on important historical process, the authors characterize the special features of emigration from East Halychyna to the South American country at the late 19th and early 20th centuries. The research explores I. Franko’s participation in emigration movement and outlines the background of the author’s interest in creating literary work on the theme of emigration. Franko’s sketch of emigrational drama is not lengthy. It contains the list of characters, the author’s stage instruction describing the place of the first action (tavern), the first scene, and the beginning of the second. However based on the first fragment the features of conflict between two contrary characters’ groups are already noticeable. These groups are presented by peasants as eventual emigrants and their antagonist agent Podorozhnyi who acts in cooperation with a subagent Jew renter Moshko. It looks like in the play “To Brazil” the writer intended to highlight only key issues of the problem, in particular the emigrational agitation. Franko’s unfinished drama about the emigration contributed to appearance of the poetic cycle “To Brazil” (1896–1898) where its traditional topoi became somewhat transformed (the characters of peasants-emigrants, the agent, the Jewish subagent, archduke Rudolf, and motive of cheating). The mentioned cycle has an evident theatrical tone due to the dominance of role characters in lyrics. However, in the authors’ opinion, the drama, if it had been finished, could have offered more significant psychological analysis and enriched the presentation of Brazilian discourse in I. Franko’s literary works about emigration.
I. Franko’s unfinished drama is interpreted not only within the author’s ‘emigrational’ text but also in the general context of the Ukrainian literature at the turn of the 19th and 20th centuries dealing with emigration in Brazilian direction (L. Lopatynskyi’s dramas “Mother-in-law” (1899) and “To Brazil”; A. Chaikovskyi’s story “Brazilian Welfare” (1896); T. Borduliak’s short story “Ivan the Brazilian” (1899); D. Markovych’s short story “Brazilians” (1896), etc.). The mentioned works have their basis in traditional narrative with its fixed images (agent, emigrant, homeland, outland) and motives (departure agitation, travel obstacles, hard work abroad, comeback).
“Aeneid” by Anatolii Bazylevych: Picturesque Mythologization of Poem by Ivan Kotliarevskyi
Authors: Narivska Valentyna 
Published: March 2019

The article analyzes 120 drawings by A. Bazylevych, the outstanding Ukrainian artist of the 20th century, created for the editions of “Aeneid” by I. Kotliarevskyi in 1969 and 1970. The subject matter is a look at the drawings in the status of a picturesque author’s myth. The skill of ‘visual intelligence’ of the artist is demonstrated in the picturesque original reading of the poem by Kotliarevskyi as a phenomenon of the Baroque with expressive literary methods of ‘image turning’ that contributed to this process and acquired the significance of historical and literary classics. The assumption as for the artist’s mastering of the Baroque concept of Chyzhevskyi that was popular in the 1960s as well as the single-stage development of the Italian-Ukrainian culture of laughter (according to M. Bakhtin) and appreciation of picture poesis (poetry as painting, according to L. B. Alberti) are suggested. This interaction lined up the picturesque myth of Bazylevych through the artistic transformation techniques of ‘image turning’, burlesque travesty of ‘booklore’. This produced the formation of the mythological image of Aeneas as a ‘black knight’ (in the edition of 1969) in the traditions of Western European literature. The view of life through mythological red colour founded by the legendary book cover reveals the content of the ‘red Aeneas’, being signified with red clothing items, shoes, and above all the red Cossack heraldry on the flag, combining Aeneas with Trojan-Cossacks, representing the ‘red world’. Aenei-myth is considered as a Cossack Sorcerer due to the suffix specificity of H. Cohen and physical plastic with folk content that unite the Trojans-Cossacks with the gods.
Structural Shifts in the Economy of the Amur Region
Authors: Vasilyeva A. V. 
Published: March 2019

The article provides an economic and statistical review of the structural changes in the economy of the Amur Region from 2004 to 2016. An analysis of regional statistics on the industrial structure of gross value added (GVA) over the period under review allowed the author to identify quantitative parameters identifying economic activities that determine the characteristics of the modern economy of the region, and those that have not been developed.Based on statistical calculations, it was concluded that leading economic activities in the Amur Region are «Transport and Communication», «Mining and quarrying», «Wholesale and retail trade».The primary objective of the study was to determine the degree of intensity of structural shifts in the regional economy and identify the main trends of its development. The «absolute» gains and growth factors of the relative structural components of the GVA for the Amur Region for the period under review were calculated to characterize these structural changes.According to the author, the calculations indicate the absence of a positive transformation in the structure of the regional economy. Thus, the intensive development of the commodity sectors of the economy continues, and the low growth rates of the manufacturing industries are noted. To carry out a summary assessment of structural changes in the regional economy, the author has calculated the linear and quadratic coefficients of the «absolute» structural changes. The results provide an opportunity to more accurately identify critical areas for investment, as well as support those economic activities that will allow the region to maximize its potential benefits.
What is Bringing the Revised European Statistics Code of Practice to Statistical Experience?
Authors: Sultanova A. A. 
Published: March 2019

This article considers the main changes in the European Statistics Code of Practice (Code of Practice) made in 2017; it addresses noticeable processes of transformation of legal frameworks and practices in some countries of the former USSR. There is also a brief analysis of the new opportunities that bring the introduction of this standard.The paper presents most relevant revisions and additions to the Code of Practice, made in 2017 by the European Statistical System Committee, the main differences of the new version of the Quality Declaration of the European Statistical System. The paper addresses the feasibility of practical implementation of some standards of the revised document as well as information about the processes of transformation of the legal basis and practices in some countries of the former USSR.The author concludes that the Code of Practice may serve as a basis for national statistical services to establish quality policy while aligning this international standard with national conditions can be beneficial for the development of legal framework for the official statistics.
Learning to teach writing through a distance education programme: Experiences of Rwandan secondary school English teachers
Authors: Niyibizi Epimaque , Sibomana Emmanuel , Perumal Juliet 
Published: March 2019

Background: Writing is among the most important skills, and globally it has received more emphasis in literature on language teaching than reading, speaking and listening. However, a paucity of studies is observed in sub-Saharan Africa, particularly in contexts where English is being taught as an additional or foreign language, as is the case in Rwanda. Research shows that learners who can write well in different genres and for different purposes tend to do well in all curriculum subjects and subsequently beyond school education. The key challenges are the inadequacy of materials and teachers’ inability to teach writing well, especially through distance education programmes.Objectives: This study investigates the effectiveness of materials used at the University of Rwanda-College of Education’s Distance Education programme to train high school teachers on writing pedagogy for English teaching.Method: The study adopted a qualitative approach to report on the findings from textual, document analysis of distance education materials, argumentative essays and focus group discussions with 80 of 599 in-service teachers, who responded to designed and redesigned sections on writing pedagogy.Results: The findings indicate that teachers’ knowledge and skills in both writing and writing pedagogy are not addressed effectively by the materials designed. This negatively affected the quality of their own writing abilities and those of their students.Conclusion: The article recommends reconceptualisation of distance education materials to equip in-service teachers with propositional knowledge and procedural knowledge on writing pedagogy.
UK universities compliance with the Concordat to Support Research Integrity: findings from cross-sectional time-series
Authors: Wager Elizabeth 
Published: March 2019

Background. The Concordat to Support Research Integrity published in 2012 recommends that UK research institutions should provide a named point of contact to receive concerns about research integrity (RI). The Concordat also requires institutions to publish annual RI statements.
Objective. To see whether contact information for a staff member responsible for RI was readily available from UK university websites and to see how many universities published annual RI statements.
Methods. UK university websites were searched in mid-2012, mid-2014 and mid-2018. The availability of contact details for RI inquiries, other information about RI and, specifically, an annual RI statement, was recorded.
Results. The proportion of UK universities publishing an email address for RI inquiries rose from 23% in 2012 (31/134) to 55% in 2018. The same proportion (55%) published at least one annual RI statement in 2018, but only 3 provided statements for all years from 2012/13. There was great variation in the titles used for the staff member with responsibility from RI which made searching difficult.
Conclusion. Over 6 years after the publication of the Concordat to Support Research Integrity, nearly half of UK universities are not complying with all its recommendations and do not provide contact details for a staff member with responsibility for RI or an annual statement.