bluuebunny/crossref_metadata_2025 huggingface dataset:
Making Music: Composing With Young Musicians Program Evaluation
Authors: Andrews Bernard W. , Giesbrecht Maia
Published: November 2023

Making Music: Composing with Young Musicians is a research-commissioning project that involves a partnership between the Faculty of Education, University of Ottawa and Curriculum Services, Ottawa-Carleton District School Board (OCDSB). Over a three-year period, 18 new research-based compositions for students enrolled in school music programs were created, studied and premiered in local schools by teachers and their students. The purpose of this presentation is to provide the findings from three focus groups, each representing one of the three years of the Making Music Project. Overall, the participants indicated that the experience was very positive; they appreciated the opportunity for their students to connect with professional composers and they indicated an eagerness to participate in future projects. The major strength of the project was the opportunity for teachers and their students to collaborate with living composers in the creative process, and the major weakness was the composers’ lack of experience composing educational music (a wide-spread problem in Canada). Based on their experience in the project, the teachers indicated that they were more willing to teach music composition in their classes. They noted that the composers were far more involved in the students’ learning process than would normally occur with a standard commissioning program. The teachers also noted that their own involvement shifted towards a facilitating role rather than that of teacher-directed instruction. The project could be improved through better promotion to the schools and a prior meeting with the participants to articulate roles, responsibilities and process.
Modéliser un programme de formation en enseignement pour répondre aux nouvelles réalités sociales et culturelles en contexte francophone minoritaire
Authors: Jacquet Marianne , Cavanagh Martine
Published: November 2023

Lors de cette communication, nous présenterons un modèle de formation en enseignement adapté aux nouvelles réalités sociales et culturelles en contexte francophone minoritaire et le processus par lequel ce modèle a été construit et mis en œuvre. Nous ferons d’abord une mise en contexte sur les nouvelles réalités sociodémographiques, ministérielles et institutionnelles en Alberta, avant de présenter l’orientation théorique ancrée dans la notion de changement, telle que conceptualisée par Michael Fullan (1982) et ses collaborateurs (Fullan & Quinn, 2018). Ensuite, nous présenterons la démarche méthodologique collaborative et dynamique qui a conduit à l’élaboration du modèle. Finalement, nous présenterons les différentes composantes du modèle avant de conclure sur les conditions gagnantes pour favoriser le changement dans le cadre de la formation à l’enseignement.
Language, Identity and Social Integration: Stories of Skilled Bangladeshi Immigrants in Canada
Authors: Shams Shaila
Published: November 2023

This emerging ethnographic study aims to explore the impact of English language and learning on the settlement and social integration of skilled Bangladeshi immigrants in Canada. Though language is a significant factor in immigrants’ settlement, few researchers have explored the relationship between language and immigrants’ social integration, and even fewer have researched the impact of language in skilled immigrants’ settlement (Han, 2007; Gimpapa & Canagarajah, 2017). Canada is a popular destination for Bangladeshi skilled immigrants; however, they have remained largely ignored in the academic research and in the ethno-social milieu of Canada. Therefore, this study aims to explore how Bangladeshi skilled immigrants learn the English language, how they socialize using the language and what struggles they face in learning the language. The conceptual framework of the research is drawn from a poststructural understanding of language (Bourdieu, 1977, 1986) and sociocultural theory of learning (Block, 2013; Lave & Wenger, 1991; Ochs, 1991), and the research methodology is informed by critical theory and critical ethnographic sociolinguistic research (Heller et al., 2017). The significance of this research lies in exploring the role of language, access and participation in the settlement of the underrepresented Bangladeshi skilled immigrants in Canada and in reconceptualizing migrants’ language learning needs and scopes.
Symposium: Driving Black Student Success on a System-Wide Level
Authors: Murray Karen , West-Burns Nicole , De Jesus Stephanie , Armson Sarah , Cameron David H. , Kapoor Aakriti , James Carl , Anane-Bediakoh Beatrice
Published: November 2023

Qualitative and quantitative data indicators from the Toronto District School Board (TDSB) and York University highlight the crucial need for a holistic Black Student Success and Excellence (BSSE) strategy to address systemic racism that Black students face in all aspects of their schooling. To this end, TDSB developed a program to foster critical consciousness in educators. The initiative partnered educators, school administrators, central support staff, associated researchers and initiative leaders in an inquiry-based journey relevant to their role(s), space(s) and experience. The study took place in 17 secondary and elementary schools. Results demonstrate that participants fostered their own critical consciousness and that of their students’ through the research or inquiry process. The symposium details experiences from across this work. It also explores the direct and indirect effects of the initiative on participants related to the conditions and mechanisms for entry, implementation, mobilization and sustainability, and processes within the initiative at micro and macro levels. As an extension of this work, TDSB and York University also piloted a Black Student Summer Leadership Institute to provide Black secondary students with opportunities to understand and develop leadership and agency in challenging anti-Black racism through principles of Youth Participatory Action Research. As part of their inquiry, students in the summer program also identified the following key themes to describe the Black student experience: sense of belonging, stress, engagement, body/self-image, neglect, student voice and safety. Overall, this panel highlights the different components, challenges and successes with this initiative and implications for expanding this work.
SUITABLE PACKAGING CONCEPT FOR SUNGKAI LEAVE HERBAL TEA PRODUCED BY THE INDEPENDENT AGRICULTURAL AND RURAL TRAINING CENTRE “SUNGKAI PERMAI”
Authors: Syukri Daimon , Rini Rini , Makky Muhammad
Published: November 2023

Background:  Sungkai leave herbal tea produced by The Independent Agricultural and Rural Training Centre “Sungkai Permai” need to be expanded by packaging improvement.  Methodology: The concept of packaging for herbal tea has been developed by the team from Andalas University. The basic design and brand for the herbal tea has proposed and produced in order to enhance the satisfaction of consumers to existing tea. Conclusion: The Independent Agricultural and Rural Training Centre “Sungkai Permai) was impressed for the packaging concept of their Sungkai leave herbal tea. “Teh Sehat Sungkai” is the brand that was created for the herbal tea product. Moreover, the utilization of ivory box include with the design was also introduce to the The Independent Agricultural and Rural Training Centre “Sungkai Permai). Further development is needed for increasing the acceptance of consumers to the Sungkai leave herbal tea product.
Increasing Productivity Of Oyster Mushroom Harvest By Applying Kumbung Cultivation Sanitation
Authors: Fiana Risa Meutia , Febjislami Shalati , Hayati P.K Dewi
Published: November 2023

Limau Manis Village is one of the villages in Pauh District, Padang City. Oyster mushroom cultivation can be carried out by farmer groups because the technology used is appropriate technology. Oyster mushroom cultivation can use equipment that is very familiar to the community and easy to obtain. Another advantage of oyster mushroom cultivation is that land use is not too large and there are not many pest attacks on oyster mushrooms. Oyster mushroom has a very broad market. the importance of kumbung sanitation to the members of the Sejahtera Limau Manis Oyster Mushroom Cultivation Group and making improvements to the kumbung of one of the members as a pilot for an ideal kumbung design
Improving graphic design skills for HR Center for Self-Help Agriculture and Rural Training (P4S) "Sungai Permai" Lambung Bukit sub-district, Pauh District, West Sumatra
Authors: Syukri Daimon , Rini Rini , Makky Muhammad , Halwa Haniyatul , Dina Mivtahul
Published: November 2023

In order to increase the promotion of activities and products resulting from the activities of the Self-Help Agriculture and Rural Training Center (P4S) “Sungai Permai” in the Lambung Bukit sub-district, Pauh District, West Sumatra, graphic design training was conducted for one of the members of the farmer group. The training carried out is an introduction and oreration of Corel Draw. The training was carried out for one month involving students from the Department of Food Technology and Agriculture at Andalas University. This training activity can increase the HR capacity of the "Sungai Permai" (P4S) group, which in the future it is hoped that this group will be more independent in terms of developing business and product promotion designs so that they can develop even better.
The Activities Had Been Done by UNAND Students in Community Service Program 2023 in Nagari Batahan, West Pasaman
Authors: Syukri Daimon , Santy Ayu Gultom Eryka
Published: November 2023

Community Service Program-Community Empowerment Learning (KKN-PPM) is one of the activities that must be carried out because it is one of the requirements for student graduation as an Andalas University student. This Community Service Program (KKN) is carried out one of which aims to advance education and student welfare at various levels. The programs carried out are socialization, introduction, and preparation of students to face college entrance exams, socialization to students in elementary schools about the impact of playing excessive cellphones and helping elementary school students in the preparation of Marching Band for the celebration of Independence Day on August 17, 2023. This initiative not only engages students in arts and culture, but also strengthens the spirit of patriotism and patriotism among students. Overall, the KKN program is an effective instrument in supporting student development in various aspects, making it one of the valuable assets in the world of Indonesian education, especially in Nagari Batahan, Ranah Batahan District, West Pasaman Regency.
Challenges and Problems Faced by EFL Teachers in Teaching Allomorph through Narrative Text
Authors: Amalia Inkarizki Swedianisa , Setiawan Slamet , Anam Syafi'ul , Purwati Oikurema
Published: November 2023

The fact that teaching English in Indonesia is still driven by textbooks makes not many students have the ability to communicate in English and even they often experience mispronunciation. This study was conducted to find out how to teach allomorphs as a provision to strengthen knowledge of English pronunciation. In addition, this study also seeks to reveal how the challenges faced by EFL teachers in the Allomorph learning process. There are 3 stages that the teacher can do to teach allomorphs through narrative texts; introduction to phonetic symbols, reading the text, and analyzing and practicing the types of allomorphs. From the use of the selected narrative text, it reveals 3 types of allomorphs from 4 types that have been introduced to students in the form of past tense, plural number, and regular possessive. Some of the challenges and problems faced by EFL teachers in teaching English pronunciation, especially allomorphs, is the lack of student motivation to learn. In addition, EFL teachers still hold on to the old philosophy about the lack of importance of learning pronunciation, making this teaching even more difficult. The lack of class hours and the large number of students in EFL classes are also challenges for teachers.
Bakayat: Endangered Traditions of Oral Literature in West Sumatera
Authors: Djalius Yusmarni
Published: November 2023

This is historical research on traditional oral literature, bakayat, performed in West Sumatra, Indonesia. As preliminary research, it primarily aimed to document the performance and collect its scarcely written sources. Data and sources were collected through observation, interview, and documentation methods. Descriptions of the performance or narrative, narrator or storyteller, text, and context are provided in this essay to introduce bakayat as a Minangkabau art and literature and to place it in a larger literary context.The data were collected by observing and recording bakayat in its actual performance setting, obtaining documents and archives, and interviewing its storytellers. The study found that bakayat is seriously endangered. Used to be one of the most attended performances in the area, bakayat is no longer appealing to young audiences. The sustainability and continuity of bakavat as a local tradition are at stake. Therefore, serious measures must be formulated and taken by the government, local adat dignitaries, and other cultural stakeholders to promote this unique tradition and encourage the young audience to learn and preserve bakayat.
The Use of Kahoot Application in Comprehending Figurative Language
Authors: Chan Al Maghvirah , Asri Dhiant
Published: November 2023

Smart phone as a device cannot be separated from our daily lives today. Many applications in smartphone are available to learn English language. One of them is kahoot application. The objective of this study was to compare the effectiveness of using kahoot application and traditional discussion method in learning figurative language. This was an experimental research. Two classes as control class and treatment class were observed by giving pretest and post test. Result indicated that students in the control class performed significantly better on post test than students in the treatment class. Further research needs to be conducted to combine the use of the application and conventional method.
Direct and Indirect Speech Acts on Boris Bokir and Pache Justeen Podcasts
Authors: Izar Sri Listiana , Nasution Muhammad Muslim , Izar Julisah , Khasanah Desi Nur
Published: November 2023

This study intends to describe direct speech acts and indirect speechacts on the Boris Bokir and Pachee Justeen Podcasts. This study used a qualitative descriptive approach. The research data were in the form of sentence excerpts originating from utterances made by Boris Bokir and Pache Justeen. The data then collected by using the note-taking technique First, the researcher listened to video recordings of Boris Bokir and Pache Justeen's podcats, then listened and took notes simultaneously. Furthermore, the acquisition of research data obtained that the speech act groups used by Boris Bokir and Pache Justeen contain direct and indirect speech acts. The direct and indirect speech acts consist of three modes, declarative sentences, interrogative sentences, and imperative sentences.The utterances made by Boris Bokir and Pache Justeen on podcats have a purpose that is in line with the function of the speech.
Analysis Mixed Traits of Jo March That Affect Her Gender Identity
Authors: Naura Dania
Published: November 2023

The objective of this research is to reveal and explain the mixed traits through Jo March character and to understand the impact that influence her gender identities. This research employs qualitative analysis method and applying the theory of Robert DiYanni character and characterization, gender stereotypes and sex role inventory which invented by Sandra Bem. This theory has a purpose to analysis the gender issues which contained in this film. The result shows that the main character, Jo March has the characterization of self-sufficient, brave and principled woman through DiYanni point of view. Moreover, the research discovered that Jo March adopts both mixed traits which is both masculinity and femininity traits in woman’s body that made them include to androgyny. Her masculinity traits are independent, strong personality, assertive and analytical, while her femininity traits are affectionate, compassion, sensitive and warm. This mixed traits that possessed in Jo breaks the stereotype that female character constantly depicted inferior role, however in this research it demonstrates that Jo not only dominate by masculine traits yet she balanced her feminine traits as well. In this context, it affects her relationship with Laurie, the male character by leads the relationship to frustration and regret between them.
اثر استخدام التدريب الذاتي في تحسين عدد من المتغيرات الوظيفية والمهارات الحركية لدى لاعبات الكرة الطائرة
Authors: عبد الرزاق حسو مؤيد
Published: November 2023

يهدف البحث الحالي إلى محاولة التعرف على أثر برنامج التدريب الذاتي في عدد من المتغيرات الوظيفية و المهارات الحركية بكرة الطائرة لمجموعات البحث الثلاث (المتقدمات، والشابات، والضابطة) لدى لاعبات كرة الطائرة كما يهدف الى محاولة التعرف على الفروق بين مجموعات البحث الثلاث (المتقدمات، والشابات ـ والضابطة) للاعبات كرة الطائرة في بعض المتغيرات الوظيفية المهارات الحركية للكرة الطائرة بعد تطبيق برنامج التدريب الذاتي.

استخدم الباحثان المنهج التجريبي لملائمته وطبيعة البحث ، شملت عينة البحث على لاعبات الكرة الطائرة في نادي قرقوش الرياضي،  وتم تقسيم العينة إلى ثلاث مجاميع (تجريبيتين وضابطة) عن طريق الاختيار العشوائي حسب الفئات العمرية، باستخدام القرعة بواقع (7) لاعبات متقدمات و (7) لاعبات شابات، و (6) لاعبات للمجموعة الضابطة.

وبعد عرض النتائج ومناقشتها توصل الى الباحثان الى مجموعة من الاستنتاجات كان أهمها:

ان تطبيق برنامج التدريب الذاتي على لاعبات كرة الطائرة لم يؤدي إلى حدوث تغيرات كبيرة في المتغيرات الوظيفية قيد الدراسة لمجموعتي البحث التجريبيتين (الشابات، والمتقدمات)، عدا متغير (ضغط الدم الانقباضي) الذي اظهر تحسناً ملحوظاً عن اللاعبات المتقدمات .

تفوق مجموعة البحث التجريبية (المتقدمات) على المجموعة الضابطة في نتائج القياس البعدي في متغير (مهارة الضرب الساحق).
بناء مقياس المعرفة النظرية بمادة المبارزة لطلبة كلية التربية البدنية وعلوم الرياضة بجامعة الموصل
Authors: حسين محمد علي , زكي ابراهيم ضياء , حازم احمد احمد
Published: November 2023

هدف البحث الى:

بناء مقياس المعرفة النظرية بمادة المبارزة لطلبة السنة الدراسية الثالثة في كلية التربية البدنية وعلوم الرياضة بجامعة الموصل.

وضع درجات ومستويات معيارية لعينة البحث بمقياس المعرفة النظرية بمادة المبارزة.

       اُستخدم المنهج الوصفي بالاسلوب المسحي، وتكون مجتمع البحث من طلبة السنة الدراسية الثالثة بكلية التربية البدنية وعلوم الرياضة بجامعة الموصل للعام الدراسي (2021-2022)، والبالغ عددهم (198) طالب وطالبة، وتم بناء مقياس المعرفة النظرية بمادة المبارزة باجراءات خاصة ببناء المقاييس المعرفية، وتم مُعالجة البيانات احصائيا باستخدام الحقيبة الاحصائية (IBM Spss)، وتوصل الباحثون الى الاستنتاجات التالية :

تم بناء مقياس المعرفة النظرية بمادة المبارزة لطلبة السنة الدراسية الثالثة في كلية التربية البدنية وعلوم الرياضة في جامعة الموصل.

تم وضع درجات ومستويات معيارية لعينة البحث في مقياس المعرفة النظرية بمادة المبارزة.
Main innovations of the pandemic period in the Russian language
Authors: Van Tinyan' , Mitrofanova Irina Igorevna
Published: November 2023

The subject of the scientific article is the main innovations in the Russian language that appeared during the Covid-19 pandemic. The purpose of the article is to identify and analyze innovations in the Russian language during the pandemic, as well as their classification. The following methods were used in the work: text analysis, comparative analysis, frequency analysis, categorization, deduction method. The results of the work showed that many innovations were formed in the Russian language during the pandemic: new words translated from another language or undergone lexical development; homonymy; dissemination of slang vocabulary; going beyond specialized circles of highly specialized vocabulary; non-usual changes in the scope of semantics; the prevalence of one main discourse in speech and language. The article allows us to understand how social transformations affect language and the linguistic picture of the world. In this regard, the results of the work can be used to create effective communication strategies and understand the various processes unfolding in society. The research can also help improve the procedure for translating various texts, as well as improve intercultural interaction during a pandemic and similar situations. The novelty of the research can be seen both at the theoretical and practical levels. At the theoretical level, the approaches of various authors to recording changes in the field of the Russian language during the Covid-19 pandemic were collected, analyzed and structured. At a practical level, these changes are supported by specific examples that can be useful to philologists, linguists, journalists and any other interested parties who operate with the terminology of the pandemic period and use it in their work. The pandemic has significantly affected the Russian language and led to many changes in it. These innovations were reflected in the works of modern Russian linguists and philologists, as well as in various journalistic materials on the Internet, which became the empirical basis for the study.
PENGARUH UMUR PERUSAHAAN, FINANCIAL DISTRESS, GENDER KOMITE AUDIT TERHADAP KETEPATAN WAKTU PENYAMPAIAN PELAPORAN KEUANGAN DAN OPINI AUDIT SEBAGAI PEMODERASI
Authors: Bella Meyvi Devtari , Budiantoro Harry
Published: November 2023

Penelitian ini bertujuan untuk mengetahui pengaruh umur perusahaan, financial distress, gender komite audit terhadap ketepatan waktu penyampaian pelaporan keuangan dengan opini audit sebagai pemoderasi. Populasi dalam penelitian ini adalah perusahaan manufaktur yang terdaftar di BEI periode 2017-2021 berjumlah 152 perusahaan. Teknik pengambilan sampel menggunakan purposive sampling. Total sampel yang dipakai sebanyak 43 perusahaan. Data dalam penelitian ini digunakan data sekunder. Metode analisis yang digunaakan adalah metode analisis linear berganda dan analisis linear regresi moderasi (MRA) yang diolah dengan aplikasi SPSS 29. Hasil penelitian secara parsial menunjukkan bahwa umur perusahaan dan gender komite audit tidak berpengaruh terhadap ketepatan waktu penyampaian pelaporan keuangan, financial distress berpengaruh positif terhadap ketepatan waktu penyampaian pelaporan keuangan. Secara simultan, umur perusahaan, financial distress, dan gender komite audit berpengaruh signifikan terhadap ketepatan waktu penyampaian pelaporan keuangan. Hasil Uji MRA yang dilakukan menunjukkan bahwa opini audit tidak mampu memoderasi pengaruh umur perusahaan dan gender komite audit terhadap ketepatan waktu penyampaian pelaporan keuangan. Sedangkan, financial distress mampu memoderasi opini audit terhadap ketepatan waktu penyampaian pelaporan keuangan.
Promoção de envelhecimento saudável por meio de aplicativo de mensagens instantâneas
Authors: Machado Matheus Araújo  Carvalho , Martins Alinne Oliveira da Silva , Amaral Joana D'Arc Moura Silva do , Aldunate Janaína Carvalho , Militão Angeliete Garcez , Sampaio Denise Teodoro , Figueiredo Expedita Fátima Gomes de , Tourinho Eurly Kang , Silva Valéria Moreira da , Mendes Vanessa Alves
Published: November 2023

Objetivo: Relatar a utilização de um aplicativo de mensagens instantâneas para a promoção de ações de envelhecimento saudável e ativo na saúde do idoso durante a pandemia da Covid-19. Relato de experiência: A equipe partiu da organização da divisão de grupos para elaboração do planejamento das atividades de cinco oficinas que contemplam ações de mobilidade física; temáticas de autoconhecimento, memórias afetivas e resgate de positividade nas várias fases da vida; a exploração da temática de educação em saúde e por fim a motricidade na envelhescência a serem compartilhadas na modalidade remota por meio de vídeos, áudios, textos e videochamadas, adequando a atividade à especificidade de cada participante. O funcionamento do grupo no dia destinado para cada ação foi administrado pela equipe executora, a qual designava o período de envio de mensagens pelos participantes, evitando envio de mensagens desconexas à temática abordada. Considerações finais: Considera-se que o projeto ofertado em modo virtual, teve ótimo desempenho, assegurando a instrução de diversas atividades de saúde mental, física e nutricional. Possibilitando ricos momentos intergeracionais. Para além do momento de aprendizado, essa experiência permitiu o fortalecimento de uma rede de apoio e suporte, capaz de encorajar os envolvidos a ter esperança de superação daquele contexto.
Reactive oxygen species and chromophoric dissolved organic matter drive the aquatic photochemical pathways and photoproducts of 6PPD-Quinone under simulated high-latitude conditions
Authors: Redman Zachary , Begley Jessica , Hillestad Isabel , DiMento Brian , Tomco Patrick
Published: November 2023

The photochemical degradation pathways of 6PPD-quinone (6PPDQ, 6PPD-Q), a toxic transformation product of the tire antiozonant 6PPD, were determined under simulated sunlight conditions typical of high-latitude surface waters. Direct photochemical degradation resulted in 6PPDQ half-lives ranging from 17.5 h at 20 °C to no observable degradation over 48 h at 4 °C. Sensitization of excited triplet state pathways using Cs+ and Ar purging demonstrated that 6PPDQ does not decompose significantly from a triplet state relative to a singlet state. However, assessment of processes involving reactive oxygen species (ROS) quenchers and sensitizers indicated that singlet oxygen and hydroxyl radical do significantly contribute to the degradation of 6PPDQ. Investigation of these processes in natural lake waters indicated no difference in attenuation rates for direct photochemical processes at 20 °C. This suggests that direct photochemical degradation will dominate in warm waters while indirect photochemical pathways will dominate in cold waters, involving ROS mediated by chromophoric dissolved organic matter (CDOM). Overall, the aquatic photodegradation rate of 6PPDQ will be strongly influenced by the compounding effects of environmental factors such as light screening and temperature on both direct and indirect photochemical processes. Transformation products were identified via UHPLC-Orbitrap mass spectrometry, revealing four major processes: 1) oxidation and cleavage of the quinone ring in the presence of ROS, 2) dealkylation, 3) rearrangement, and 4) deamination. These data indicate that 6PPDQ can photodegrade in cool, sunlit waters under the appropriate conditions: t1/2 = 17.4 h – no observable decrease (direct); t1/2 = 5.2 – 11.2 h (indirect, CDOM)
Molecular Simulation of the Impact of Defects on Electrolyte Intrusion in Zeolites
Authors: de Izarra Ambroise , Coudert François-Xavier , Fuchs Alain , Boutin Anne
Published: November 2023

We have investigated through molecular simulation the intrusion of electrolytes in two representative pure-silica zeolites, silicalite-1 and chabazite, in which point defects were introduced in varying amounts. We distinguish between two types of defects, considering either “weak” or “strong” silanol nest defects, resulting in different hydration behavior. In presence of weak defects, the hydration process occurs through a homogeneous nucleation process, while with strong defects we observe an initial adsorption followed by a filling of the nanoporous volume at higher pressure. However, we show not only that electrolytes do not penetrate the zeolites, but these defects appears to have only marginal influence on the thermodynamic of electrolyte intrusion. While replacing pure water by the electrolyte solution shifts intrusion pressure towards higher values because of the drop of water saturation vapor pressure, an increase in hydrophilicity of the framework due to point defects has the opposite effect showing that controlling the amount of defects in zeolites is crucial for storage energy applications.
Tandem Hock and Friedel-Crafts reactions allowing an expedient synthesis of a cyclolignan-type scaffold
Authors: Ikonnikova Viktoria A. , Cheibas Cristina , Gayraud Oscar , Bosnidou Alexandra E. , Casaretto Nicolas , Frison Gilles , Nay Bastien
Published: November 2023

The Hock cleavage is an acid-catalyzed oxydative reaction involving allylic or benzylic hydroperoxides. Since it generates an electrophilic oxocarbenium species, it could be used in tandem processes in the presence of nucleophiles. Here, starting from benzyl(prenyl)malonate substrates, the prenyl moiety was first photooxygenated. The resulting hydroperoxide was directly engaged in a Hock cleavage by adding a Lewis acid in presence of an aromatic nucleophile to promote tandem Friedel-Crafts reactions, also involving the benzyl moiety of the substrate. This tandem sequence led in one pot to 1-aryltetraline products reminiscent of the cyclolignan natural product skeleton.
Electrochemical Analysis of Gold Nanoparticles Multifunctionalised with Cytochrome c and a Zinc Porphyrin
Authors: Potts Jordan , Jain Akhil , Amabilino David , Pérez-García Lluïsa , Rawson Frankie
Published: November 2023

Cytochrome c (Cyt c), known for its functional redox capabilities, plays a pivotal role in biological processes such as the electron transport chain and apoptosis. However, understanding how different conjugation strategies impact its structural and redox characteristics is limited. To fill this gap, we investigated the effects of conjugating Cyt c and a zinc(II) porphyrin (Zn Porph) to gold nanoparticles (AuNPs). We used circular dichroism (CD) spectroscopy to detect structural conformational changes in Cyt c upon conjugation and time-of-flight secondary ion mass spectrometry (TOF-SIMS) to identify protein orientation. Cyt c was predicted to have different orientations depending on the size of AuNPs and methods used to conjugate the protein, it was hypothesised that the orientation of Cyt c may influence the redox properties of the protein. The electrochemical properties of Cyt c were assessed using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). We used DPV-based to determine the heterogeneous rate constant (k0). The results show a lower k0 for conjugated Cyt c than free Cyt c, likely due to structural changes in the protein. The spatial orientation of Cyt c had minimal influence on k0, while ligand density and AuNP size had an effect. The k0 value of Zn Porph did not decrease on conjugation. Despite these changes, Cyt c and Zn Porph maintained their electrochemical capabilities after conjugation.
Impact of Electric-Arc Welding on The Mechanical Properties of AISI 1055 Medium Carbon Steel with Varied Gauge Diameters
Authors: Afrifa J. Y. , Duodu E. A. , Amoanab N. J. , Dubik K. , Akasika C. , Dery F.
Published: November 2023

Purpose: This paper investigated through experimentation, the impact of electric-arc welding processes on the mechanical properties of AISI 1055 steel medium carbon steel material with varied gauge diameters.

Design/Methodology/Approach: The study used experimental and analytical methods to investigate the impact of electric arc welding on the mechanical properties of AISI 1055 Medium Carbon Steel. The test samples were prepared based on the standards of the American Iron and Steel Institute (AISI), with varied gauge diameters. Standard tensile tests were performed on the samples before welding and after welding, using a computer-interfaced Universal Tensile Testing Machine. Data obtained from the study was analyzed using graphs, tables and charts. Finally, the sets of results for both welded and unwelded specimens were compared to determine the impact that welding has on welded medium carbon steel components and structures.

Findings: The data recorded by the computer-interfaced tensile test machine was used to plot and display, the stress-stain graphs for the various sets of samples. The results showed that the welding processes adversely affected the Ultimate Tensile Strength (UTS), Yield Strength, Elastic Modulus and Impact Strength of the samples studied; since all the samples studied had their initial values dropped after undergoing welding and testing.   However, the strain of the samples increased after welding.

Research Limitation/Implication: Although there are other methods and techniques of welding metals, this study adopted electric arc welding to weld the samples used for the study due to resource constraints.

Practical Implication: The findings of this study also bring to the fore, the need for industry regulators to promulgate standards to regulate the welding of medium carbon steel and by extension, other industrial materials to preserve the natural properties of the materials.

Originality/Value: This study introduced an important perspective to the testing of engineering materials by varying the gauge diameters (a key determinant of the dimensional specifications of the specimen), to obtain a comprehensive insight into the impact of electric-arc welding on the mechanical properties of the material.
Prediction of Petrol and Diesel Prices in Dar Es Salaam using ARIMA models
Authors: Ntare P. C.
Published: November 2023

Purpose: The study aims to address the importance of predicting fuel prices due to their impact on the economy and welfare of people in Dar es Salaam city and regions in Tanzania.

Design/Methodology/Approach: This study follows the quantitative research design by utilizing secondary data. The sample data consists of monthly petrol and diesel prices in Dar es Salaam from January 2015 to May 2023. The ARIMA model was employed to analyze the time series data with model identification, estimation, and verification steps performed using statistical techniques such as the ADF test, ACF, PACF, and AIC.

Findings: The findings indicated that the ARIMA (0,1,1) model was the best-fitted model for forecasting both petrol and diesel prices in Dar es Salaam. The forecasted values for the next six months show that models demonstrated good performance in predicting petrol and diesel prices.

Research Limitation/Implication: Some of the potential limitations of this study include the reliance on secondary data, the assumptions of stationarity and linearity in the ARIMA model, and the sensitivity of the forecast to future data. Also, the study focuses specifically on Dar es Salaam which may limit the generalizability of the findings in other regions.

Social Implications: This study has significant social implications for residents of Dar es Salaam, offering insights for household budgeting, transportation planning, and predicting fuel price changes. It also informs social programs and subsidies, contributing to equitable and sustainable community development.

Practical Implications: The study has practical implications for the stakeholders in the fuel industry, policymakers, and consumers in Dar es Salaam. The accurate prediction of petrol and diesel prices can assist consumers in making informed decisions regarding pricing, budgeting, and fuel consumption which helps to reduce the risk of fuel loss and optimize their fuel-related choices.

Originality/Value: The novelty of this study is analyzing historical fuel price data in Dar es Salaam using ARIMA models. Through this approach, we identify trends, seasonality, and cyclical patterns unique to the region. This knowledge adds to the existing understanding of fuel price determinants in the local context.
Reading riddles aright: a cognitive linguistic analysis of English and Ukrainian riddles
Authors: Pavkin Dmytro
Published: November 2023

The article offers an analysis of the conceptual structure of English and Ukrainian riddles with the subsequent comparison of the empirical data under scrutiny. The relevance of the cognitive-linguistic vantage point adopted in the paper is determined by the fact that riddles constitute coal-and-ice elements of the linguistic image of the world which is a reflection of the ethnic conceptual image of the world. Thus, exposing the conceptual organization of riddles lays foundations for establishing unique features of the mindset of the English and Ukrainian peoples reflected in riddles in both languages. To reach the goal, I apply the methodology of conceptual analysis, namely the notions of conceptual sphere and domain introduced by cognitive linguists, as well as basic propositional schemas that feature in semantics of lingual networks. The research consists of two stages. At the first stage, I perform the modeling of the conceptual arrangement of objects the riddles refer to. The objects are found to fall within one of the two conceptual spheres (LIVING BEINGS and INANIMATE OBJECTS) that consist of three and six domains correspondingly. At the second stage, the characteristics of referents that are mentioned in the riddles serving as clues for guessing them are considered. These 25 characteristics are viewed as predicates of 11 basic propositional schemas. In conclusions, I draw a comparison between the riddles of the two languages. The similar features are attributed to the universals embedded in the conceptual image of the world symptomatic of all humans whereas the revealed differences pertain to idioethnic specificity of the two linguistic communities.
Designing Eight-port Antenna Array for Multi-Band MIMO Applications in 5G Smartphones
Authors: Faydhe Al-Azzawi Zainab , AbdulSattar Rusul Khalid , Muhsin Muhannad , Abdulrazzaq Mohammed , Salim Ali , Ali Jawad K.
Published: November 2023

This article introduces a dual-functional low-profile compact multiple input multiple output (MIMO) antenna array for multi-band communication in 5G smartphones. The proposed eight elements of the antenna array form two different 4×4 MIMO systems. The first four elements are placed at the four mobile corners and operate in a single band of 3.445-3.885 GHz for 5G n77 and n78 applications. The other system, in which four antennas are positioned in the middle of the terminal board, supports two wide bands of 1.684-2.300 GHz and 4.432-5.638 for n2, n3, n39, n65, n66, n79, and WLAN applications. The second iteration of a modified Peano-type fractal geometry served as the design foundation for the proposed antenna element. The system's ground plane design is based on self-isolated and spatial diversity methods. The single-band MIMO system's isolation is better than 23 dB. In the dual-band MIMO system that is based on self-isolation, isolation equals approximately 16 dB in the higher band and 10 dB in the lower band. To evaluate performance, radiation-related and total antenna efficiencies, scattering parameters and gains were investigated. Additionally, ECCs have been considered to evaluate MIMO performance. According to the results, such design constitutes a valuable option for MIMO applications in 5G smartphones.
Deep Classifiers and Wavelet Transformation for Fake Image Detection
Authors: Osowski Stanislaw , Golgowski Maciej
Published: November 2023

The paper presents the computer system for detecting deep fake images in video films. The system is based on applyingcontinuous wavelet transformation combined with the ensemble of classifiers composed of a few convolutional neural networks of diversified architecture. Three different forms of forged images taken from the Face-Forensics++ database are considered in numerical experiments. The results of experiments on the application of the proposed system have shown good performance in comparison to other actual approaches to this problem.
Examining the Impact Factors and Strategies to Mitigate Economic Fluctuation in the Real Estate Sector
Authors: Xiao Yadong
Published: November 2023

With the continuous growth of the economy and the rapid pace of urbanization, the real estate sector has assumed an increasingly substantial role within the national economy. Ensuring the stable and sustainable development of the real estate sector to maximize its societal and economic contributions has become a pressing issue. China, presently engaged in an extensive urbanization drive, places real estate development and sales as pivotal components in the broader real estate industry, significantly impacting the overall functionality of the real estate market. Real estate, being a comprehensive system encompassing land, housing, infrastructure, and other key elements, exerts a profound influence on people’s basic needs such as shelter, sustenance, and daily living. Its evolution directly shapes the trajectory of the national economy and social stability. Therefore, to foster the consistent and robust growth of China’s real estate economy, it is necessary to implement effective measures that entail a systematic and thorough analysis of the factors responsible for the fluctuations in China’s real estate economy.
PENGARUH KONDISI OPERASI TERHADAP PEMBENTUKAN FOULING FACTOR (Rd) PADA KONDENSOR 61-127-C DI UNIT AMMONIA REFRIGERANT PT. PUPUK ISKANDAR MUDA
Authors: Anjani Salsabil Nabilah , ZA Nasrul , Azhari Azhari , Bahri Syamsul , Sylvia Novi
Published: November 2023

Kondensor merupakan komponen pendingin yang sangat penting yang berfungsi untuk memaksimalkan efisiensi pada mesin pendingin. Penelitian bertujuan untuk menganalisis pengaruh perubahan temperatur, heat duty, dan pressure drop terhadap nilai Rd pada alat penukar panas kondensor dengan menggunakan EDR serta membandingkan hasil data design dan aktual yang didapatkan. Aspen Exchanger Design and Rating (EDR) dapat digunakan untuk membuat, mengevaluasi dan menyimpan design serta memungkinkan untuk memaksimalkan desain untuk alat penukar panas yang dibutuhkan berdasarkan biaya. Metodologi yang dilakukan berupa pemodelan ulang proses pabrik ammonia II kemudian mengekspor nilai yang telah didapatkan pada kondensor ke aplikasi EDR lalu lakukan rating/checking pada run mode, masukkan data laju alir, temperatur serta data geometri yang dibutuhkan. Kemudian dilakukan pengecekan (runing) dengan aplikasi tersebut, setelah hasil yang dibutuhkan didapatkan maka dilakukan pendataan. Hasil penelitian didapatkan bahwa selisih nilai Q design lebih besar daripada nilai Q pada data aktual (data I) yaitu sebesar 4.359.780 Kcal/h, sedangkan nilai Rd shell side design dan aktual sama yaitu 0,00009 m2 K/W begitu pula dengan nilai Rd tube side design dan aktual didapatkan 0,00024 m2 K/W. Didapatkan juga perbandingan nilai pressure drop pada kondisi design dan aktual pada sisi shell sebesar 0,585 Psi, sedangkan pada sisi tube pressure drop mengalami kenaikan dengan selisih antara data design dan aktual sebesar 3,145 Psi. Berdasarkan penelitian yang dilakukan, didapatkan beberapa kesimpulan bahwa semakin tinggi nilai temperatur, maka nilai Q juga akan semakin tinggi dan begitu pula sebaliknya. Nilai Rd dipengaruhi oleh nilai Uc dan Ud, sehingga jika nilai Uc dan Ud rendah maka nilai Rd mengalami kenaikan yang disebabkan oleh suhu yang tertransfer kecil. Fouling factor yang tinggi dapat menyebabkan nilai pressure drop tinggi sehingga menyebabkan terjadinya penurunan kinerja heat exchanger. Pressure drop di pengaruhi beberapa faktor lainnya yaitu kecepatan aliran massa fluida melalui tube, panjang tube, jumlah pass dan kebersihan air pendingin yang masuk kedalam kondensor.
ANALISA VARIASI POLYETHYLENE TEREPHTHALATE (PET) DAN CANGKANG TELUR SEBAGAI BAHAN PEMBUATAN PAVING BLOCK RAMAH LINGKUNGAN
Authors: Nursakinah Nursakinah , Zulnazri Zulnazri , Bahri Syamsul , Fikri Ahmad , Af M Haikal
Published: November 2023

Paving block merupakan salah satu bahan bangunan yang digunakan sebagai lapisan atas struktur jalan selain aspal dan beton. Cangkang telur dan PET merupakan salah satu yang banyak dihasilkan. Penambahan cangkang telur dan PET bertujuan untuk meningkatkan kemampuan daya serap air dan kuat tarik. Metode yang digunakan yaitu metode cold press dengan tiga tahap pembuatan yaitu persiapan cangkang telur, pembuatan PET cair dan pembuatan paving blok. Hasilnya bahan tambah cangkang telur 100% memiliki daya serap air dan nilai kuat tekan yang paling tinggi yaitu 4,89 % dan 10,56 MPa. Hal ini disebabkan karena ikatan kimia antara cangkang telur dan semen portland yang terbentuk cukup jenuh sehingga menyebabkan daya serap air dan kuat tekan meningkat
PEMBUATAN MALTODEKSTRIN DARI TEPUNG SAGU (METROXYLON) MENGGUNAKAN ASAM NITRAT (HNO3)
Authors: Aprilla Indah , Nurlaila Rizka , ZA Nasrul , Sulhatun Sulhatun , Ibrahim Ishak , Retnowulan Sri Rahayu
Published: November 2023

Maltodekstrin adalah produk hidrolisis pati yang mengandung unit α-D-glukosa yang sebagian besar dihubungkan oleh ikatan 1,4-glikosidik, dengan DE di bawah 20.  Pembuatan maltodekstrin pada penelitian ini dengan menggunakan pati sagu dimana pati sagu banyak mengandung karbohidrat yang cocok untuk dijadikan bahan baku pembuatan maltodekstrin. Penelitian ini bertujuan untuk Meningkatkan produktivitas tepung sagu menjadi  maltodekstrin dan menganalisa kualitas maltodekstrin dari bahan baku tepung sagu yang sesuai SNI. Penelitian ini sudah pernah dilakukan sebelumnya, yang belum pernah dilakukan adalah katalis yang digunakan berupa asam nitrat , variasi suhu hidrolisis yaitu  80oC 90oC dan 100 oC serta variasi waktu hidrolisis yaitu 90, 120 dan 150 menit. Pembuatan maltodekstrin dilakukan dengan proses hidrolisis yaitu pertama mensuspensi tepung sagu yang dilarutkan kedalam aquadest lalu ditambahkan CaCl2 100 ppm dan ditambahkan HNO3 , Selanjutnya dipanaskan diatas hot plate dengan variasi suhu dan waktu hidrolisis, maka didapat hasil penelitian dengan kondisi yang terbaik pada suhu hidrolisis 100oC dan waktu hidrolisis 150 menit yaitu rendemen 69,41%, kadar air 1,41%, dan nilai DE 20%. Serta Gugus  fungsi maltodekstrin pada waktu hidrolisis 150 menit dengan suhu 100oC dan terlihat gugus OH pada area bilangan 3371,57 cm-1 dan gugus aldehid (C=O) pada area bilangan gelombang 1736,11 cm-1 telah terbentuk maltodekstrin secara sempurna.
Pengaruh Intervensi Penyuluhan dengan Menggunakan Media Flipchart terhadap Tingkat Kecemasan Orang Tua pada Pasien Operasi Labioplasty di YPPCBL Bandung
Authors: Sodja Laela Dewi , Rachmadiani Rasyid Rania , Heriyanto Yonan , Ningrum Nining
Published: November 2023

Pendahuluan: Tindakan operasi pada anak dapat mengakibatkan timbulnya kecemasan pada orang tua. Kecemasan orang tua terjadi karena kurangnya pengetahuan. Tingkat Kecemasan dapat diatasi dengan cara diberikan edukasi.  Penyuluhan dengan alat bantu media berupa media flip chart merupakan salah satu bentuj edukasi. Tujuan penelitian ini mengetahui pengaruh intervensi penyuluhan dengan menggunakan media flip chart terhadap tingkat kecemasan orang tua pada pasien operasi labioplasty di YPPCBL. Metode : Jenis penelitian analitik menggunakan metode quasi experiment. Populasi penelitian orang tua pasien penderita celah bibir di YPPCBL. Sample diambil secara accidental sebanyak 20 sampel orang tua pasien operasi labioplasty di YPPCBL. Uji hipotesis menggunakan Wilcoxon Signed Rank Test. Hasil : Tingkat kecemasan orang tua pasien yang akan dilakukan operasi labioplasty sebelum dilakukan intervensi 95 % masuk kedalam kategori kecemasan ringan. Setelah dilakukan intervensi penyuluhan seluruh orang tua (100%) tidak mengalami kecemasan. Analisis Wilcoxon Signed Rank Test menunjukkan ada perbedaan signifikan antara tingkat kecemasan orang tua pasien operasi labioplasty sebelum dan sesudah diberikan penyuluhan dengan menggunakan media flip chart (Sig = 0,000 < 0,05). Kesimpulan : Intervensi penyuluhan dengan media flip chart dapat menurunkan tingkat kecemasan orang tua pasien operasi labioplasty