bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characterising structural, mechanical and cytotoxic properties of coral-based composite material intended for bone implant applications
Authors: Samper Gaitán Angela , Rojas Mora Fabio Arturo , Narváez Diana María , Méndez Moreno Luis Miguel 
Published: February 2023

Studies concerning the application of Porites asteroides coral for bone implant purposes have demonstrated the biological viability of its use. As a complement to previous research regarding the development of bone-powder based composite materials which are useful for such applications, this study was aimed at developing a coral powder-based composite material which would be able to satisfy the appropriate structural, mechanical and cytotoxic properties required for its use. A composite material made of coral powder, calcium sulphate powder and water was therefore developed, and its properties were tested in different compositions. The results showed how the resulting composite material had properties which were comparable to those of human cortical bone (from both a structural and mechanical point of view), as well as being non-toxic below a 0.35 mg/ml critical composite material concentration.
The corrosion resistance and microstructure of UBM system-deposited NbxSiyNz thin films
Authors: Velasco Estrada Leonardo , Olaya Florez Jhon Jairo , Rodríguez Baracaldo Rodolfo 
Published: February 2023

NbxSiyNz thin film nanostructure was grown using the unbalanced magnetron sputtering (UBM) technique with varying Si content. Corrosion resistance was evaluated by potentiodynamic polarisation technique in a 3% NaCl solution. Microstructure was analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and laser scanning microscopy. Chemical composition was ascertained by X-ray fluorescence (XRF) technique. The results showed that deposition rates increased with higher Si content. A microstructural change was observed for greater than 5% Si content through the transition from a crystalline to an amorphous structure in the thin films. Corrosion test results demonstrated that the thin films having the highest silicon content had better corrosion resistance.
Beneficiated coals' char morphology
Authors: Vargas Diana , Chaves Sanchez Deisy , Trujillo Uribe Maria Patricia , Piñeres Mendoza Jorge Luis , Barraza Burgos Juan Manuel 
Published: February 2023

This work evaluated the char morphology of beneficiated and original coal (without beneficiation) from four Colombian coalmines: Cerrejón (La Guajira), La Jagua (Cesar), Guachinte (Valle del Cauca) and Nechí (Antioquia). Column flotation was used to obtain beneficiated coal, whereas a drop tube reactor at 1,000oC, 104 oC/s heating rate and 100 ms residence time was used to obtain char. The chars were analysed by image analysis which determined their shape, size, porosity and wall thickness. It was found that char morphology depended on coal rank and maceral composition. Morphological characteristics like high porosity, thinner walls and network-like morphology which are beneficial in improving combustion were present in vitrinite- and liptinite-rich lowest-ranking coals. Beneficiated coals showed that their chars had better performance regarding their morphological characteristics than their original coal chars.
Total organic carbon removal from a chemical lab's wastewater using Fenton's reagent
Authors: Martínez Ávila Oscar Mauricio , Franco José Herney Ramírez , Toledo Reyes Magda Lorena 
Published: February 2023

Treating industrial wastewater represents a serious problem nowadays; it requires a strong understanding of the particular systems and (in most of cases) ad hoc solutions. This work describes the use of Fenton's reagent (reaction between H2O2 and Fe(II)) for removing total organic carbon (TOC) from a particular chemical laboratory's lab-scale batch reactor wastewater. Some operating variables (hydrogen peroxide and ferrous ion concentration, temperature and pH) were evaluated regarding final TOC removal. An economic optimisation was made by means of a second order polynomial model representing these variables' behaviour regarding TOC removal (0.94 R2). The highest experimentally reached TOC removal was 88.8% at 50 mg/L [Fe(II)]0, 50 mM [H2O2]0, pH=2.8 at 80ºC, while 53.9% was obtained in optimised conditions, i.e. 36 mg/L [Fe(II)] 0,45.5 mM [H2O2]0, pH=2.6 at 20oC. It was found that the Fenton process could achieve 41% removal, even in adverse conditions (pH close to 6). It was noted from the analysis that both H2O2 concentration and temperature had a powerful effect on organic matter degradation efficiency, as well as on total treatment cost.
A latent profile approach for classifying internet gamers based on motives for online gaming
Authors: Kim Bin-Na , Kang Hyo Shin , Park Jungkyu 
Published: February 2023

AbstractBackground and aimsOnline gaming motives have proven to be useful in differentiating problematic engagement in online gaming. However, the mixture modeling approach for classifying problematic subtypes based on gaming motives remains limited. This study attempted to differentiate heterogeneous online gamers into more homogenous subtypes based on gaming motives using latent profile analysis (LPA). We also compared various psychological and gaming/leisure related variables across the derived profiles.MethodsA total of 674 Korean online game users (mean age = 21.81 years, male = 76%) completed self-report questionnaires, including the Korean version of the Motives for Online Gaming Questionnaire (K-MOGQ). After the LPA, the relationships between latent profile membership and auxiliary variables were explored.ResultsFour latent profiles were identified, that were further classified into one problematic (highly motivated-dissatisfied gamer), one highly engaged (highly motivated-satisfied gamer), and two casual (moderately-motivated casual gamer and lowly-motivated casual gamer) gamer profiles. Inter-profile comparisons revealed that highly motivated-dissatisfied gamer had the most pathological profile, characterized by high Internet gaming disorder (IGD) tendency, neuroticism, and impulsivity, but the lowest recreation motive. While highly motivated-satisfied gamer also demonstrated a heightened IGD tendency, they showed positive patterns of psychological and gaming/leisure-related variables, which indicated they could be better considered as high engaged instead of problematic gamers.Discussion and conclusionsThese results indicate that the recreation motive, in addition to fantasy or escape motives, is an important factor in differentiating maladaptive online gamers. Classifying online gamers based on gaming motives can contribute to a clearer conceptualization of heterogeneous gamers, paving the way for individualized assessment and treatment planning.
Монастырская реформа 1864 года в Царстве Польском на примере Ченстоховского Ясногорского монастыря
Authors: Siemienienko Anna 
Published: February 2023

In the consequence of the January Uprising catholic convents in the Kingdom of Poland (among which the convent of Pauline Fathers from Częstochowa was) were regarded by the tsarist’s apparatus as places in which rebirth of anti-Russian moods might appear. For this reason convents’ activity was controlled thoroughly. Certain mechanisms of a control were developed. The mechanisms were mainly used to control finances. Other areas were also controlled, but the control was not as direct as in the case of finances. The government did not interfere much in convents’ inner matters. They assumed that if any accusations (either in social or political sense) against individual monks or the whole community of monks appeared the responsibility rested on superiors of a convent or a diocesan bishop where the acts would take place. The article Standards of functioning and running Roman Catholic convents in the Kingdom of Poland written in 1864 was the document established binding standards concerning the issue.
“Please Open Our Church… in the Name of Historical and Human Value of Socialism”. Orthodox Believers’ Letters to Power, 1960s–Early 1970s
Authors: Shlikhta Natalia 
Published: February 2023

The article is intended as an introduction into the study of a particular source on the Soviet-period history of the Church. It demonstrates potential for the interdisciplinary survey of “letters to power” as an action and a source within broader contexts of the Orthodox Church’s integration into a Soviet society and its defensive strategies. Soviet believers’ letters, written in defense of their Church and their religious rights, became the most widespread form of their protest against discriminatory policy pursued by the state. In the first part the author provides a general overview of believers’ petitioning (as the text and the action) focusing on their reasons for writing letters, their self-representation and the view of the authorities. The author also examines discursive techniques and rhetorical conventions used it the letter. In the second part of the article the author examines a revealing case: the petitioning campaign of Orthodox believers from Chernihiv in defense of St. Trinity Church as it is presented in their letters written between 1962 and 1972.
The Culture of Quoting in Simeon Polotsky’s Epistles: Biblical Texts and Liturgical Books
Authors: Prieobrażenska Anastasija 
Published: February 2023

The article looks into biblical quotations in letters and epistles by the first Muscowy court poet Simeon Polotsky (1629–1680). In the second half of the 17th century Russian literature was changing dramatically while encompassing Western tradition and secular tendencies. Biblical texts also became a subject for revision for various reasons. Simeon Polotsky, educated in the Mohyla Collegium and in Poland, used biblical texts extensively not only in his sermons, but also in his private letters and epistles. To explore the role biblical quotations played in Simeon’s letters, the article analyzes the corpus of Simeon’s epistolary texts in comparison with other letters of the period. Classification of quotes is given to demonstrate the ways in which Simeon treated biblical texts, editing and correcting them.
Гендерные отличия чувства безопасности в школе у подростков 14-17 лет
Authors: Вырская Марина Сергеевна 
Published: February 2023

Представленная работа основана на данных, собранных в рамках специального исследования детского благополучия (весна 2022 г.) среди школьников восьми регионов страны. Автор выдвигает гипотезу, согласно которой чувство безопасности подростка связано с его гендером и в зависимости от гендера имеет разные предикторы. Гипотеза проверяется методом линейной регрессии на общей выборке и двух подвыборках – мальчиках (n = 29 621) и девочках (n = 38 718) в возрасте 14-17 лет. В результате анализа гипотеза подтверждается лишь отчасти: чувство безопасности в школе зависит от гендера подростка – мальчики ощущают себя в большей безопасности, чем девочки, однако прочие контроли не зависят от гендера. Так, наиболее значимыми факторами чувства безопасности в школе как для мальчиков, так и для девочек являются отношение одноклассников, буллинг, наличие близких друзей и здоровье респондента. Однако в случае с девочками большее значение для чувства безопасности имеет здоровье и наличие близких друзей, а в случае с мальчиками – буллинг.
Тема метемпсихоза в поэзии Николая Гумилева
Authors: Сундукова Ксения 
Published: February 2023

В статье рассматривается обращение Николая Гумилева к популярной в литературе Серебряного века теме припоминания прошлых воплощений, понятой как мистическая способность человеческой памяти. Несмотря на постулируемый акмеистами отказ от обращения к мистическому опыту, тема перерождения и воспоминания о прошлых жизнях разрабатывается Гумилевым на протяжении всего его творчества: начиная с книги Романтические цветы и вплоть до ряда стихотворений из книги Огненный столп. С этой точки зрения рассмотрены стихотворения Credo, Сон Адама, Вечность, Прапамять, Память, Заблудившийся трамвай и некоторые другие. Эти тексты обнаруживают определенное сходство на уровне мотивной организации: изображение земной жизни как грезы, а смерти как пробуждения; мотив звона и созвучия, отсылающий к теме творчества; мотив чувственного восприятия земного мира через физическую любовь; мотив пути и жизни как направленного движения. В ранних текстах воспоминание о прошлых жизнях и бытии до рождения окрашены в гармоничные тона, в более поздних стихотворениях на первый план выходят эсхатологические мотивы. Кроме того, в стихотворениях Память и Заблудившийся трамвай тема метемпсихоза метафоризируется, становится способом рассказать об опыте одной прожитой жизни, включенной в широкий мифопоэтический контекст. Интересно, что приписываемое памяти мистическое свойство преодолевать границы жизни созвучно ряду модернистских концепций культуры (Аби Варбург, Томас Стерн Элиот и Осип Мандельштам), подразумевающих воскрешение в творчестве прошедших эпох. Обращение Гумилева к теме метемпсихоза может быть помещено в контекст идеи о культурной синхронии.
Pengaruh Model Pembelajaran Kooperatif dengan Metode Talking Stick terhadap Kompetensi Belajar Peserta Didik tentang Materi Struktur dan Fungsi Jaringan Tumbuhan Kelas VIII di SMPN 2 Payakumbuh
Authors: . Sumiati . 
Published: February 2023

ABSTRACT

The low learning competency of students is caused by several problems found in the learning process, including because learning is still teacher-centered. Learning in this way causes the learning competence of students to be low. One of the efforts that can be done to improve students' learning competence is to apply cooperative learning models with the Talking Stick method. The purpose of this study is to determine the effect of cooperative learning models with the Talking Stick method on the learning competencies of students about the material structure and function of Class VIII plant tissue at SMPN 2 Payakumbuh.This type of research is an experimental study with a posttest only design control group research design. The population of this study was all students of Class VIII at SMPN 2 Payakumbuh in the academic year 2019/2020. Sampling using a purposing sampling technique, which was selected as a research sample was Class VIII.6 as the control class and VIII.8 as the experimental class. The instrument used was a posttest about knowledge competencies, an observation sheet for attitude competencies and skills. Data analysis techniques used in this study were normality test, homogeneity test data, and hypothesis test data with t-test. Based on the results of the study of students' knowledge competency obtained tcount value of 3.38> t table 1.67, the attitude competency value of t count 2.03> t table 1.67, and the skill competency value of t count 2.72> t table 1.67. This shows that the hypothesis is accepted. It can be concluded that the application of cooperative learning models with the Talking Stick method has a positive effect on student learning competencies at SMPN 2 Payakumbuh
Keywords:
The Growth of Alocasia macrorrhiza (L) Schott Variegata Roots on Murashige and Skoog Medium Supplemented 6-Benzyl Amino Purine (BAP) and Kinetin
Authors: Yachya Arif , Afina Nisa Novi , Andriani Vivin , Wardania Siti , Putri Rosa Adelia Aryaning Fidya , Sari Nada Tika , Putri Eka Nur Indah Sari Sartono 
Published: February 2023

The sente variegata plant (Alocasia macrorrhiza variegata) is a species of ornamental taro. The unique leaf color of sente variegata, which is a combination of white and green, attracts ornamental plant lovers for hunting or collecting. There has been no cultivation effort from the ornamental plant suppliers and traders for multiplication purposes until now. Sente variegata is obtained directly from the forest. This activity can cause extinction. Micropropagation efforts using plant tissue culture techniques are needed for commercial and sustainability issues. This study aimed to determine the effect of 6-Benzyl Amino Purine (BAP) and kinetin on the root formation and growth as one step in the shoot multiplication of sente variegata bulb explants. Variations in BAP and kinetin concentrations used separately in this study were 0, 2, 5, and 10 mg. L-1. The results showed that the application of BAP and Kinetin significantly affected the root growth of sente Variegata. Finally, kinetin 10 mg L-1 is the concentration and type of cytokinins recommended for the formation and root growth of sente variegate.
Propaganda Politik Ade Armando dalam Media Sosial
Authors: Suhartono Suhartono . , Yusnita Eti , Azzuhri Hatta 
Published: February 2023

This study aims to determine Ade Armando's political propaganda and determine the impact of Ade Armando's political communication. The theory used in this research is the theory of political propaganda according to Harold D. Laswell. The research method used in this thesis is library research. tertiary sources come from books and journals regarding Ade Armando's political propaganda. The results of Ade Arrmando's political propaganda research in Indonesian politics which are conveyed through his social media uploads, be it Facebook, Instagram, or Twitter accounts. Behind the upload, his social media posts are written in sentences or photos that contain insults, insults, subtle satire to crude satire and there is a motive behind it, namely a sense of pride so that you feel great in every post that is always in the public spotlight, becomes a provocateur. There was an impact from Ade Armando's political propaganda, namely repeatedly being named a suspect with various legal violations up to Article 21 paragraph (1) and 21 paragraph (4) of the Criminal Procedure Code (KUHAP) because the person concerned had repeatedly made statements and statuses on social media that have the potential to divide the Republic of Indonesia. Apart from that, another impact that Ade Armando had was being the victim of a beating at the DPR/MPR building demonstration on Monday, April 11, 2022.
Keywords: Political Communication, Ade Armando
ANALISIS PERSEPSI MAHASISWA FAKULTAS TARBIYAH DALAM MENANGGAPI PERKULIAHAN DARING SELAMA COVID-19
Authors: Syah Imam Maarif , Handayani Tri 
Published: February 2023

Perkuliahan daring atau online merupakan salah satu bentuk penggunaan internet sebagaia alat bantu penyampaian yang dapat meningkatkan peran mahasiswa saat proses pembelajaran. Penelitian ini bertujuan untuk mengetahui bagaimana persepsi mahasiswa fakultas tarbiyah Institut Agama Islam Sukabumi dalam menanggapi perkuliahan secara daring selama COVID-19. Jenis penelitian ini adalah kualitatif deskriptif dengan sampel yang digunakan mahasiswa fakultas tarbiyah Institut Agama Islam Sukabumi. Teknik pengumpulan data menggunakan observasi, wawancara dan angket, angket disusun menggunakan google form. Hasil penelitian tentang persepsi mahasiswa saat pembelajaran daring dibagi menjadi tiga komponen utama yaitu respon saat belajar daring, pendapat terkait proses belajar daring dan evaluasi pembelajaran. Hasil penelitian didapatkan bahwa media pembelajaran daring yang paling digemari ialah whatsapp dari 90% mahasiswa memilihnya. Selain itu, pola komunikasi yang paling digemari oleh mahasiswa ialah komunikasi dua arah 50% mahasiswa fakultas tarbiyah memilihnya. Sistem perkuliahan yang paling diminati adalah dengan media tulisan, didapat 50% mahasiwa yang gemar. 100% mahasiwa mengikuti proses perkuliahan di rumah sendiri dan 100% alat elektronik yang digemari adalah handphone. Diperlukan adanya penelitian lanjutan saat pembelajaran daring beralngsung dengan pokok bahasan model pembelajaran berbasis masalah, sistem kolaboratif dan strategi pembelajaran lainnya.
Kata Kunci: Persepsi, Mahasiswa, Fakultas Tarbiyah, Daring, Covid-19
Bimbingan Konseling dalam Konteks Spiritual Terhadap Pasien Rehabilitasi Napza di Rumah Sakit Ernaldi Bahar Palembang
Authors: Pratama Muhammad Bayu 
Published: February 2023

Napza atau narkoba dapat memengaruhi tubuh terutama susunan saraf pusat atau otak sehingga apabila disalahgunakan akan menyebabkan gangguan fisik, psikis, jiwa dan terganggunya fungsi sosial seseorang. Penelitian ini bertujuan untuk mengetahui perilaku dalam konteks spiritual pasien rehabilitasi Napza. Penelitian ini bersifat kualitatif dengan pendekatan deskriptif yang melakukan observasi, dan Wawancara. Hasil penelitian menunjukkan bahwa pelakasanaan Rehabilitasi Pasien Napza juga dapat di bentuk kepribadiannya dengan memberikan bimbingan dan konseling pada aspek konteks spiritualnya yang mencakup aspek pengalaman ibadah (prayer fulfillment) yang dilakukan oleh kelima subjek secara bersamaan yaitu pengamalan ibadah, keyakinan hidup (universalitas) serta tanggung jawab terhadap kehidupannya (keterkaitan) yang telah mereka jalani sepenuhnya dari pasien yang sebelumnya ketergantungan menjadi pribadi yang dapat mengelola dirinya dengan baik dan lebih menghargai arti kehidupan.
Association Between Prosthetic Knee Effusions and Phosphodiesterase Type-5 Enzyme Inhibitor Use After Total Knee Arthroplasty
Authors: Anibas Jakob J. , Brady Nicholas , Cheppalli Naga Suresh 
Published: February 2023

Case:
Phosphodiesterase type-5 enzyme (PDE5) inhibitors are well tolerated and used to treat erectile dysfunction. We report a case of prosthetic knee effusions associated with PDE5 inhibitor use in a 65-year-old man after total knee arthroplasty (TKA). PDE5 inhibitor treatment was stopped, and the patient had no further episodes of painful effusions.

Conclusion:
This report describes a previously unknown adverse effect of PDE5 inhibitor use in a prosthetic joint after TKA. We hope to encourage physicians managing patients after joint replacement to be aware of the association between PDE5 inhibitor use and recurrent joint effusions to improve postoperative outcomes.
Thermodynamic Evaluation of Asphalt Concrete Properties and its Mixing Energy Consumption by Exergy Structure
Authors: Zhang Qing , Romaniuk V. N. , Khroustalev B. M. , Hou Qiang , Hou Dehua 
Published: February 2023

Abstract. The relevance of solving the problem of energy saving, today, is enhanced by the requirements of an environmental nature, united by the term “green energy”. Solving the problems of climate conservation is inseparable from solving the problem of energy saving. Green, hydrogen energy, about which there has been a powerful and aggressive debate over the past decade, turned out to be directions far from solving the problems of both energy saving and environmental protection. The solution of both problems of energy saving and environmental protection at the present time and in the foreseeable future is being solved on the basis of the use of traditional primary energy resources, primarily natural gas. In this regard, the need to solve the problem of quantifying the thermodynamic perfection of heat-technological process for producing an asphalt concrete mixture becomes extremely relevant. This assessment is most simply carried out on the basis of the exergy method of thermodynamic analysis with the determination of the exergy structure of the asphalt concrete mixture flow, including thermomechanical, concentration and reaction components. The value of the concentration component of the exergy of the asphalt concrete mixture allows us to assess the energy efficiency of its production at asphalt concrete plants based on the modern exergy method of thermodynamic analysis; gives a quantitative estimate of the energy consumption for the process of mixing the ingredients of the asphalt concrete mixture in the mixing unit of asphalt concrete plants. The paper defines the structure of the exergy of the asphalt concrete mixture, in which the transit reaction component dominates, which determines the specificity of the exergy of the asphalt concrete mixture. The value of the specific mass concentration component of the exergy of the asphalt concrete mixture in comparison with the thermal component is small and the error in determining the concentration component, which cannot be objectively eliminated, does not affect the results of thermodynamic analysis.