bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prevalence of Periodontal Disease Among Undergraduate Students In AL-Qadisiyah Governorate, Iraq: A Cross-Sectional Study
Authors: Mohammad Ghazi Fatima , Abdul Aziz Ahmed Maha 
Published: July 2024

Periodontal disease, which involves gingivitis and periodontitis, is a common oral infection that affects the tissues that surround and support the teeth. Previously there were no epidemiological studies to assess the prevalence of periodontal disease in Al-Qadisiyah governorate generally and Al-Qadisiyah colleges and institute specifically. Therefore, an epidemiological study to determine the prevalence of periodontal diseases is essentially needed. To assess the prevalence of periodontal disease for the final year undergraduate students at all colleges and institute in Al-Qadisiyah governorate, Iraq and investigate the effect of age, gender, socioeconomic status, marital status and lifestyle factors on periodontal health status. A cross-sectional study was performed in AL-Qadisiyah colleges and institute. A total of 800 last stages students were examined using the community periodontal index for treatment needs and chosen randomly through stratified random sampling. A questionnaire was used to record information about socioeconomic status, marital status, and lifestyle, and correlated with periodontal health status. The overall prevalence rate of periodontal disease for the final year of undergraduate students in Al-Qadisiyah colleges and institute was 84.6%. Bleeding code 1 and calculus code 2 recorded approximately similar percentages (31.5%) and (31.4) respectively and only 15.4 % of students had healthy periodontium, while the percentage of shallow and deep pockets recorded 18.4 % and 3.4% respectively. Community periodontal index for treatment needs varied non-significantly among marital status in which single students had healthier periodontium (16.5%) compared to married. The statistical analysis also showed that students with very good socioeconomic status and good lifestyle had the highest percentages of healthy periodontium (50%), (22.6%) respectively. The present study shows a higher prevalence rate of bleeding and calculus among final year of undergraduate students in Al–Qadisiyah colleges and institute with a lack of knowledge about periodontal health status. Hence, there are significant associations of age, gender, marital status, socioeconomic status, and lifestyle with periodontal health conditions, also the results indicated that the majority of the students need preventive programs to reduce PDs initiation or progression.
PROPAGATION AND CALLUS REGENERATION OF POTATO (SOLANUM TUBEROSUM L.) CULTIVAR ‘DESIREE’ UNDER SALT STRESS CONDITIONS
Authors: Yousef Atheel N. , Danial Gharbia H. , Ibrahim Diaa A. , Barakat Sazan E. 
Published: July 2024

Under laboratory conditions, segments of potato with single nodes were exposed to varying doses of Sodium Chloride (NaCl) (0 mM, 20 mM, 40 mM, 60 mM, 80 mM and 100 mM), using the Murashige and Skoog growth medium to assess how NaCl salt stress affects micropropagation, callus formation, and regeneration in the ‘Desiree’ potato plant cultivar, and also seeks to determine the ability of this cultivar to thrive in salt stress conditions. The data were collected after a six-week period for each salt treatment. Remarkably, a significant increase in the mass of green and dry stems and roots was observed specifically under the 40 mM NaCl treatment. Conversely, the length of shoots and branches experienced a reduction as the NaCl concentration increased. The overall impact of the NaCl treatments strongly influenced root weight. Concerning the formation (development) and revitalization of callus, segments of potato microtubers were exposed to the above-mentioned NaCl concentrations, resulting in an intermediate level of salt stress that significantly reduced callus weights as NaCl concentration increased. Furthermore, a gradual decrease in the regeneration rate was noted with increasing concentrations of the plant growth regulator BA (1 to 4 mg/l). The most profound relative regeneration rate occurred at 1 mg/l BA. Notably, the counteractive effect of salt was more apparent with higher NaCl concentrations, with exceptions at 20 mM and 40 mM. These findings propose that the ‘Desiree’ potato cultivar exhibits moderate tolerance to salt stress and indicates a capacity to endure salinity. Moreover, this valuable variety could potentially be harnessed through genetic manipulation to enhance its salt resilience.
Persepsi Mahasiswa Program Studi Bahasa Indonesia Terhadap Penggunaan Google Classroom dalam Pembelajaran Blended Learning
Authors: Vidia Maria Gita , Lahir Muhammad 
Published: July 2024

Penelitian ini bertujuan untuk mengungkap persepsi terhadap pemanfaatan aplikasi Google Classroom dari mahasiswa Pendidikan Bahasa Indonesia FKIP Universitas Tanjungpura. Penelitian ini menggunakan metode kualitatif deskriptif. Data yang terkumpul dari penelitian ini diperoleh dengan teknik wawancara semi terstruktur berupa tanggapan penggunaan google classroom kepada 10 responden penelitian yang merupakan mahasiswa S-1, Program Studi Pendidikan Bahasa Indonesia Fakultas Keguruan dan Ilmu Pendidikan Universitas Tanjungpura angkatan 2022 semester empat yang telah menggunakan dan masih menggunakan Google Classroom dalam membantu pembelajaran blended learning pasca covid-19. Data penelitian ini dianalisis dengan menggunakan teknik analisis data tematik dan ditemukan beberapa tema persepsi terhadap pemanfaatan aplikasi Google Classroom. Beberapa tema persepsi dari hasil penelitian yang ditemukan, yaitu persepsi kemudahan penggunaan, persepsi efektivitas pembelajaran, persepsi interaksi, persepsi pemanfaatan fitur-fitur, persepsi kelebihan serta kekurangan dalam penggunaan. Berdasarkan hasil penelitian yang telah dilakukan dengan menggunakan aplikasi Google Classroom, dapat disimpulkan bahwa pembelajaran melalui aplikasi Google Classroom merupakan media pembelajaran yang efektif. Dalam aplikasi Google Classroom, dosen tetap dapat menyampaikan materi dengan baik dan mudah dipahami oleh mahasiswa, memberikan tugas, serta mengelola kehadiran mahasiswa secara online setiap harinya. Proses pembelajaran dengan aplikasi Google Classroom dapat meningkatkan prestasi akademik mahasiswa melalui metode blended learning. Penggunaan google classroom dapat menjadi solusi dalam kegiatan pembelajaran bagi mahasiswa. Pembelajaran tersebut sebagai wadah dalam pembelajaran daring. Namun, dalam pelaksanaannya pembelajaran tersebut mengalami beberapa kendala, antara lain; mahasiswa tidak mempunyai laptop, keterbatasan kuota internet dan tidak bisa mengelola waktu pembelajaran dengan baik.
Distribuição axial de temperatura no subcanal de um reator PWR a partir de duas abordagens
Authors: Perazzo Barbosa Souto Normando , Luiz de Oliveira Claudio , De Oliveira Vellozo Sergio , Glicério Cabral Ronaldo 
Published: July 2024

No núcleo de um reator, o calor produzido por fissão nuclear no combustível é removido por um fluido refrigerante. Mesmo que a transferência de calor deva ser otimizada a fim de aumentar a eficiência do processo, a temperatura no núcleo não deve exceder determinados limites de segurança, o que torna análise térmica em elementos combustíveis alvo de diversas investigações, tanto em seu design quanto em sua operação. Diferentes formas de modelar esse tipo de problema são possíveis. Neste trabalho foi estudada uma abordagem analítica por meio do balanço de energia no subcanal e uma abordagem numérica pelo Método dos Volumes Finitos. Os resultados obtidos se mostraram compatíveis, o que indicou a validade do modelo numérico desenvolvido, garantindo uma maior confiabilidade a outras análises que podem ser feitas com base na simulação realizada.
Entendendo o Hoje Social Brasileiro Mediante Conhecimento do Seu Ontem Histórico: O Cordel Como Ferramenta Pedagógica no Ensino de História
Authors: Júnior José Ferreira 
Published: July 2024

Este texto traz à luz um diálogo entre Ensino de História e Literatura de Cordel, tendo como proposta discutir o hoje social brasileiro, a partir de investigação feita ao seu ontem histórico, levando-se em conta as práticas sociais do machismo, do racismo e da homofobia. Trata-se de abordagem qualitativa, justaposta à revisão bibliográfica exploratória. É trazido para análise o cordel, previamente construído em forma de sextilhas, e usado como ferramenta pedagógica no ensino de história, tanto em aulas na educação básica no Ensino Médio, quanto no Ensino Superior. É promovido o diálogo entre História, Sociologia e Antropologia. Percebe-se, enquanto resultado, que os discentes mostram maior interesse e participação nas aulas, em decorrência da existência de identificação com o cordel, uma vez que este se constitui como um dos elementos da cultura que vivenciam.
PELATIHAN PENGELOLAAN BANK SAMPAH UNTUK MENINGKATKAN PENDAPATAN PADA IBU-IBU RUMAH TANGGA DI KELURAHAN NGELUK KABUPATEN GROBOGAN
Authors: Agusrina Yohana , Purwati Purwati 
Published: July 2024

<p align="justify">Edukasi masyarakat mengenai permasalahan lingkungan yang bersifat kompleks akibat timbulan sampah diperlukan untuk membentuk kesadaran masyarakat. Faktor penyebab kepedulian lingkungan didasari cara berpikir dan perilaku manusia. Partisipasi aktif warga menjadi hal yang penting untuk diidentifikasikan dalam aksi pengelolaan sampah.Sebagian besar masyarakat di RT 08 RW 1 Kelurahan Ngeluk, Kecamatan Penawangan Kabupaten Groboga belum peduli terhadap pengelolaan sampah. Kemudian secara ekonomi, saat ini belum ada nilai ekonomis terhadap pengelolaan sampah, selain masyarakat belum paham terhadap pengelolaan sampah yang mempunyai nilai ekonomis dan sebagian besar kesadaran terhadap pengelolaan sampah masih rendah.Saat ini bank sampah merupakan suatu wadah yang digunakan oleh banyak pihak untuk meningkatkan keasadran masyarakat terhadap gaya hidup yang lebih bersih dan sehat.</p><p align="justify"> </p><p align="justify"> </p>
Analisis Isi Konten Instagram Ganjar Pranowo pada Masa Periode Kampanye Pemilu 2024
Authors: Rinanto Ichsan , Julianto Edy Nurwahyu 
Published: July 2024

<p align="justify">Penelitian ini menganalisis isi pesan dalam konten Instagram Ganjar Pranowo selama periode kampanye Pemilu 2024 dengan tujuan mempertahankan dan memperbaiki citra politiknya serta meningkatkan elektabilitasnya sebagai Calon Presiden 2024. Dengan landasan teori <em>The Nine Block Conversation Planner </em>oleh Lois Kelly, penelitian ini menggunakan pendekatan deskriptif kualitatif dengan metode observasi non-partisipan dan studi pustaka. Hasil penelitian menunjukkan bahwa konten Instagram Ganjar Pranowo mengandung beberapa tema pesan dari teori tersebut, seperti <em>Aspirations and Beliefs, David vs Goliath, Avalanche About to Roll, Contrarian/Counterintuitive/Challenging Assumptions, Personalities/Personal Stories, Glitz and Glam, serta Seasonal/Event-Related</em>. Tema pesan yang tidak terkandung yaitu <em>Anxieties </em>dan <em>How to</em>. Tema pesan yang banyak ditemukan dalam konten Instagram Ganjar Pranowo yaitu <em>Aspirations and Beliefs</em> yang mengangkat tema ajakan khalayak untuk berinteraksi membangun kepercayaan. Ganjar Pranowo telah menerapkan strategi yang baik selama berkampanye melalui media sosial Instagram, namun pada faktanya tidak cukup untuk meningkatkan elektabilitasnya.</p>
Автомобілі з паливними комірками на водні з протонообмінною мембраною
Authors: Колодницька Руслана Віталіївна 
Published: July 2024

Зміна клімату змістила фокус з викопного палива на чисті та відновлювані джерела енергії, а воднева енергетика стала глобальним рішенням для багатьох галузей, враховуючи автомобільний транспорт. Водневі паливні елементи (комірки), зокрема протонообмінні мембранні паливні комірки (PEMFC), є ключовими для зеленої революції завдяки високій ефективності перетворення енергії та нульовим рівнем викидів. Паливні елементи з протонообмінною мембраною використовують як паливо газоподібний водень, як окислювач – кисень з повітря, твердий електроліт і платиновий каталізатор.
Транспортні засоби на паливних комірках (Fuel-cell electric vehicles FCEVs) з використанням водню належать до транспортних засобів з нульовими викидами. В 2007 р. компанія «Toyota» випустила свій перший автомобіль з паливними комірками «Toyota Mirai» з електричним двигуном потужністю 113 кВт. Замість двигуна внутрішнього згоряння цей автомобіль має стек паливних комірок, що виробляє електричний струм. Студенти Делфтського технічного університету (TU Delft) (Нідерланди) створили гоночний автомобіль «Forze IX», який є найшвидшим гоночним автомобілем з паливними комірками на водні у світі. Автомобільні компанії «Toyota» та «Hyundai» планують виробляти 3,7 млн транспортних засобів з паливними комірками на водні до 2030 р.
У роботі описано автомобіль на водневих паливних комірках, який спроєктовано в програмному середовищі ADVISOR MATLAB. Підраховано також показники використання енергії в силових агрегатах автомобіля для різних автомобільних циклів. Найбільші втрати енергії одержано в міському циклі на паливних комірках автомобіля. Було досліджено, що за рахунок частих зупинок ефективність використання енергії паливними комірками падає до 78 %, але покращується ефективність батареї до 74 %. Моделювання в ADVISOR показує, що автомобіль на водневих паливних комірках викидає лише воду.
Паливна комірка з протонообмінною мембраною (полімерною електролітною мембраною) складається з електролітної мембрани, затиснутої між анодом (негативним електродом) і катодом (позитивним електродом). Проточні пластини (flow plates) виконують кілька важливих функцій: 1) направляють водень і кисень до електродів; 2) відводять воду і тепло від паливного елемента; 3) проводять електрони від анода до електричного кола і назад до катода.
Було досліджено і проаналізовано декілька тисяч зображень паливних комірок PEMFC з низькою і надвисокою роздільною здатністю, що дало змогу більш детально ознайомитися з процесами, що проходять всередині комірки і виявити зміни, які відбуваються з мембраною.
Economic Policy Uncertainty (EPU) in emerging countries: The case of Tunisia
Authors: Belhoula Mohamed Malek 
Published: July 2024

Purpose: I aim to develop the first Economic Policy Uncertainty (EPU) indices for Tunisia covering the period from 2012 to 2022, using a methodology adapted from Baker et al. (2016). These indices assess the frequency of relevant terms in major Tunisian newspapers to gauge the level of economic policy uncertainty. Additionally, I investigate the impact of EPU on economic activity.
Design/Methodology/Approach: This study employs a textual analysis methodology and a Web-scraping algorithm to compute the news-based EPU indices. Additionally, using a VAR (Vector Autoregression) methodology and impulse response functions, the study examines the dynamic relationship between EPU and key macroeconomic variables, including GDP, consumption, industrial production, and the unemployment rate.
Findings: The results reveal that increases in EPU significantly predict declines in GDP, consumption, and industrial production, while positively correlating with the unemployment rate. Furthermore, monetary policy uncertainty emerges as the most influential factor contributing to EPU.
Implications/Originality/Value: These findings underscore the importance of clear and consistent policy frameworks in mitigate uncertainty and enhancing economic performance in emerging economies like Tunisia.
Variables socio-contextuales asociadas al inicio del consumo de alcohol en adolescentes en función del sexo
Authors: Belda-Ferri Lorena , Aguilar-Serrano Julia , Villanueva-Blasco Víctor J. 
Published: July 2024

Introducción: El consumo de alcohol en menores es un problema social. El objetivo fue caracterizar el patrón de consumo de alcohol, analizando diversas variables socio-contextuales asociadas al inicio del consumo, así como las diferencias en función del sexo.
Material y métodos: Estudio descriptivo no probabilístico con 286 estudiantes (edad media = 15,74 años, SD= 1,48, rango 14-18 años). Se recogió información sobre variables sociodemográficas; consumo de alcohol; edad de inicio del consumo; percepción de disponibilidad; motivos y lugares de consumo.
Resultados: El 72,5% consumieron alcohol alguna vez en la vida, siendo mayor la prevalencia en chicas que en chicos. El 78,1% se emborrachó alguna vez en la vida, mostrando una mayor frecuencia de borracheras al mes los chicos. La edad de inicio para borracheras se situó en 14,06 años. Siete de cada 10 adolescentes informan de una elevada percepción de accesibilidad al alcohol. El 45% de los acceden al alcohol por ellos mismos, y los restantes a través de personas adultas. Siete de cada 10 lo adquiere en supermercados, seis de cada 10 en bares y pubs, cuatro de cada 10 en discotecas, y tres de cada 10 en el propio hogar. Cinco de cada 10 adolescentes consumieron por primera vez en espacios públicos como plazas y parques, uno de cada 10 en bares/pubs, y dos de cada 10 en el hogar propio. Los principales motivos de consumo informados fueron para celebrar algo (79,3%), porque es divertido (52,8%), para experimentar cosas nuevas (39,4%) y para desconectar de sus preocupaciones (38,9%). Nueve de cada 10 adolescentes consumieron por primera vez en compañía de sus amistades.
Discusión: La problemática del consumo de alcohol en adolescentes no puede abordarse como una decisión exclusivamente individual de estos. Se hace necesario intervenir sobre estos factores socio-contextuales que interactúan favoreciendo el consumo de alcohol en menores adolescentes.
Optimizing engine performance & emissions with CeO2 nanoparticles in diesel fuel: via response surface method
Authors: Arslan Abdullah Burak , Çelik Mehmet 
Published: July 2024

The response section method (RSM) determines the effectiveness of the data transfer at different load conditions of the engine to minimize and amplify emissions. Traditionally, manual measurements can be used to measure performance and exhaust emissions under different load conditions. This saves costa in continuous measurement. In this experimental study, nanoparticles (NPs), which have been used as fuel additives recently, were added to the diesel fuel and their effect on engine performance and emissions was analyzed. Optimization was achieved using the response and results of the surface method application. CeO2 nanoparticles were added to the fuel, at 25, 50 and 100 ppm rates, and tests were conducted at 1600, 2000, 2400 and 2800 rpm engine speeds. According to the results, an increase in brake thermal efficiency, engine power, and engine torque was observed, as well as a decrease in brake specific fuel consumption (BSFC). In emissions, CO, HC, and smoke emissions decreased, while NOx emissions increased. An optimization study was conducted with the data obtained subsequently. In the optimization with the response surface method, the optimum values were 2200 rpm and 100 ppm CeO2. Hence, engine torque, engine power, BSFC, thermic efficiency, NOx, CO, HC and smoke emissions, 25.650 Nm, 6.374 kW, 325.175 g/kWh, 27.50%, 1192 ppm, 53.30%, 96 ppm and 45.40% values were obtained, respectively. As for engine performance parameters, low error rates were obtained. The response surface method is compatible with low error rates, especially in engine performance values.
Digital literacy and EFL teachers’ anxiety with teaching online via a virtual classroom software
Authors: Fathali Somayeh , Emadi Azadeh , Lotfi Jebeli Sadaf 
Published: July 2024

This study employed qualitative analysis to investigate the technology anxiety experienced by Iranian EFL teachers conducting online classes, taking into account their digital literacy levels. A digital literacy questionnaire was administered to a group of EFL teachers teaching English online at two branches of a language institute in Iran using the virtual classroom software BigBlueButton. Based on the questionnaire responses, 12 teachers were categorized as high (N=6) and low (N=6) digital literates. Through semi-structured interviews and reflective journals, the study delved into teachers’ anxiety regarding online teaching, identifying three primary types of anxiety: pedagogical anxiety, technological anxiety, and social anxiety. The findings revealed that pedagogical anxiety stemmed from disruptions in teaching and learning processes, technological anxiety arose from challenges such as internet disconnections, and social anxiety related to judgments based on technological proficiency. While effective language instruction was a shared concern among high and low digital literate teachers, their approaches to managing anxiety varied significantly. High digital literate teachers demonstrated greater resilience in addressing online teaching challenges, whereas low digital literate teachers experienced reduced confidence and struggled with virtual classroom management. The study emphasizes the importance of addressing technology-related anxiety among language teachers in online education to enhance teaching efficacy and student outcomes. It suggests integrating digital literacy courses and providing expert support to alleviate teaching and technology-related anxiety and stress among EFL teachers, leading to more effective teaching practices.
Analysis Of Verdict Number 51/Pdt.G/2016/Pn.Kdi Concerning The Legitimacy Of Addendum Towards The Contract Of The Winner Company Tender Competitor Auction
Authors: Mahmudyah Arida , Habibie Rudy 
Published: July 2024

Project problems in tender competitor auctions often occur due to several issues, one of which is the teamwork in the Raha-Tampo Shaft Road Improvement Project Package (EIB-I07) at Muna Island, Muna Regency, Southern Sulawesi. Breaking promises, whether intentional or unintentional, by a party. When a party does not experience justice in the implementation of the engagement and desires to change some of the agreement content, they can deliver a letter in the form of an addendum. The content of an addendum often contradicts the main agreement made in front of the notary. The aims of this writing are to discover and analyze the legitimacy of addendums made by parties under the hands due to the occurrence of broken promises in the certificate of cooperation agreement, and to discover and analyze the legal considerations made by the judge in determining the case 51/Pdt.Plw/2016/PN.Kdi.

This research utilized the normative juridical approach, which is a method that relies on secondary data as the primary source of information. The secondary data is obtained through library research, specifically by reviewing legal regulations, documents, or books related to the researched topic.

The result of this study mentions that, basically, an addendum can be added to an agreement as long as all parties agree. This is because adding an addendum allows for the addition, modification, or removal of a specific issue in the agreement, which is always related to the principal agreement. This is regulated in Article 1320 of the Civil Code, which concerns the conditions for an agreement to be valid. The agreement is valid because there is a mutual agreement among all parties involved, the parties have the ability to enter into a contract, and the subject matter of the agreement is legal. The main key of an addendum is the agreement between all parties, in accordance with Article 1320 of the Civil Code.