bluuebunny/crossref_metadata_2025 huggingface dataset:
Physico-thermal and emission properties of tissue cultured clone from Bambusa balcoaa (Beema bamboo) and Oxytenanthera abyssinica as sustainable solid biofuels
Authors: Boadu Kwadwo Boakye , Ansong Michael , Anokye Rogerson , Offeh-Gyimah Kelvin , Amoah Enoch
Published: December 2022

In the search for alternatives to wood fuel, to meet the bio-energy requirement of an ever-increasing global population, the International Network for Bamboo and Rattan has supported farmers in many tropical countries to establish plantations of Beema bamboo (a tissue-cultured clone from Bambusa vulgaris) and Oxytenanthera abyssinica for bio-energy production. The quality of these species as solid biofuels is unknown due to the absence of data on their physico-thermal and emission characteristics. Using the American Standard for Testing and Materials and other internationally accepted standards, their ultimate and proximate analysis, and physico-thermal and emission properties were evaluated. Beema bamboo and O. abyssinica have high Hydrogen, organic and fixed Carbon contents and low quantities of ash, moisture content, volatile matter, Oxygen, Nitrogen and Sulphur. This will contribute to their heating values and low oxide emissions. Based on their High Heating Values (Beema bamboo = 23.22 MJ/kg; O. abyssinica = 23.26 MJ/kg), the species will be suitable for high energy-using applications. The Particulate Matter and Carbon Monoxide concentrations (Beema bamboo: 90 ug/m3 and 2.83 ppm respectively; O. abyssinica: 77.33 ug/m3 and 3.20 ppm respectively) are lower than the threshold (35000 ug/m3 and 9 ppm respectively) approved by the United States Environmental Protection Agency. These properties make the species good raw materials for solid biofuel which is safe for indoor use. Their use will contribute to reducing pressure on tropical forests for wood fuel and the health hazards associated with fossil fuel use.
Making choreography, making community
Authors: Ellis Simon , Raheem Amaara
Published: December 2022

Amaara and Simon are choreographers who co-edit Choreographic Practices (along with Dani Abulhawa and Lee Miller). In this editorial they peer into the relationship between making community and practices of choreography and how it might help us rethink the nature of authorship and authority. They talk about their best moves and also call on the work and practices of Sophie Strand, Miranda Tuffnell and D. H. Lawrence to propose that being an artist might be so much more than the first-person pronoun in ‘here’s something I made’.
circling, tumbling, dancing around: Back pieces
Authors: Brown Katrina
Published: December 2022

This article consists of six text–image pieces that share practical research into modes of moving, perceiving and thinking through the back and extended notions of dorsality. Since 2019, through workshops, studio residencies, presentations and collaborative moving, conversational, drawing and writing practices, I have been developing physical exercises and choreographic devices for tuning into the back, bringing attention to and exploring the unseen surfaces and axial technologies of the back. These dorsal practices are evolving through movement and sensory research as well as opening a wider set of philosophical concepts and possibilities for orientating in and co-habiting a world amongst other bodies and things. The pieces combine short written texts, sidenotes and images. The texts have evolved from sensory observation in practical movement tasks and conversations, in the form of notes and recordings, often working in a dynamic process between embodied experience, memory and imagination. The footnotes are a playful device for allowing other peripheral ideas such as light, moth, vestibular labyrinth, tree, tracing paper, ghost, voice, front-crawling to enter and generate gaps for the reader in which to linger, skip, skim, imagine, (re)connect. The still images, diagrams and drawings are another way of taking note, testing, proposing, articulating and reading.
On the table: An open invitation
Authors: Dear Caitlin , Muller Ebony
Published: December 2022

In this text, we propose the table as a choreographic and discursive tool that enables fruitful, collective exploration of artistic material. Through poetics, essay and scores, we share our project On the Table (OTT) – a format for artistic exchange and collaboration. We, Caitlin and Ebony, co-developed the OTT format in Naarm (Melbourne, Australia), where it runs as a programme of regular sessions out of Dancehouse. Each is hosted by a different artist who puts something ‘on the table’ for everyone who attends to explore together. This can be any manner of provocation, meaning sessions take disparate forms, ranging from workshops and in-progress showings to open artistic explorations and collaborative research. Hosts come from various forms of dance, approaches to bodily practice and relationships to movement. We platform artists who work with dance in combination with other fields, which have included those working within martial arts, game design, science and therapy. People from these fields or with thematic interests in a session are encouraged to attend regardless of movement experience. Our practice enables everyone in the room to contribute towards and shape the session’s explorations. The aim is for an unconventional array of people to work synergistically, from their varied points of interest and differing levels of expertise. Although the format is applicable beyond a dance or choreographic context, it centres around collective, embodied encounters. In this text, we extend an open invitation to readers to borrow from our practice or initiate their own satellite OTT events.
Differing bodyminds: Cripping choreography
Authors: Van Goidsenhoven Leni , Rutgeerts Jonas , Sandahl Carrie
Published: December 2022

In this position paper we start to articulate what crip theory can open up for choreography and dance. Crip theory is a critical perspective that analyses, exposes and critiques systems of normalcy in representation and social practices as well as a framework for imagining alternatives based on disabled ways of being in the world. The term crip, short-hand for the derogatory term ‘cripple’, is a re-appropriation by disabled individuals and communities, an act of pride, a demand for inclusion in mainstream life, and, paradoxically, a defiant occupation of the margins. ‘Crip theory and choreography’ was also the topic of a symposium and doctoral school we organized in Belgium in the spring of 2022. The aim of that event was to adopt the contemporary performing arts as a realm for our theorizing in embodied and experiential forms of knowledge-making in research and art practice. Over the course of the symposium and doctoral school, we explored how ‘crip dance’ might produce difference not as a divergence from the norm, but rather as a constant process of differing that opens up multiple ways of relating to body, mind and movement. Inspired by our explorations and encounters during the event, we are guest editing a Special Issue of Choreographic Practices. What we would like to contribute to conversations already happening in this journal is extended exploration of how disability studies and its unruly offspring, crip theory, not only critique the ableist structures that define mainstream dance, but offer alternative possibilities created by non-normative bodyminds.
Fading out the human presence: A conversation between Barbara Stimoli, Titta Raccagni and Simon Ellis
Authors: Ellis Simon
Published: December 2022

This is a conversation between Italian artists Barbara Stimoli and Titta Raccagni with Choreographic Practices’ co-editor Simon Ellis. The discussion begins with how Barbara and Titta began working together, and then focuses on the development and various iterations of their work Pleasure Rocks.
Ameliorating creativity in engineering education: Educator perspective
Authors: Tekmen-Araci Yasemin , Kuys Blair
Published: December 2022

Engineering students need creative thinking skills to achieve innovation. This study focuses on ameliorating the creative process in engineering design units with the purpose of getting more creative and innovative engineering design solutions from students and better preparing them for industry and real-life conditions. It is suggested that engineering should use design pedagogy as a model for ameliorating creativity. The research is carried out using qualitative investigation. The study used triangulation to collect data about engineering educators’ approach, understanding and beliefs about creativity using observational research, a survey and in-depth interviews both with students and with educators. The study used an interpretive approach for data analysis by following the levels of understanding in an organizational culture. Three main results drawn from this work are as follows: (1) Engineering educators should understand the practice of creativity in an educational context. (2) Engineering educators need to value creativity as an important part of engineering design. (3) The discipline needs to value creativity as a core part of the curriculum.

The findings suggests that enriching creativity in engineering education is not feasible until engineering instructors comprehend and embrace the use of creativity in the classroom. This article specifically explores ways of integrating creativity in engineering design processes that took place in a mechanical engineering undergraduate programme – with an expectation that the research can be used as an exemplar for other engineering disciplines to learn from. This study is an important step, with a holistic approach, in suggesting creativity and creative thinking be inherent and an integral part of every engineering curriculum.
Les primeries de la recerca sobre les traduccions bíbliques catalanes medievals. La proposta de Samuel Berger (1890)
Authors: Poy Pere Ignasi
Published: December 2022

Com a investigadora —tant a l'Institut de Recerca en Cultures Medievals de la Universitat de Barcelona com en el projecte Corpus Biblicum Catalanicum de l'Associació Bíblica de Catalunya—, Gemma Avenoza (1959–2021) centra una part dels seus interessos en la qüestió relativa a la presència i la circulació de la Bíblia en l'Europa medieval des d'unes perspectives —la de revisar els repertoris dels fons documentals i la d'inventariar els arxius pendents— desenvolupades a redós d'escriure i defensar la tesi de doctorat (1989). Es tracta d'unes opcions que, en la pràctica, la integren en la cadena que, pel que respecta a les anàlisis bíbliques, Samuel Berger (1843–1900) comença arran de finalitzar la primera etapa dels estudis teològics (1867). En certa manera, doncs, l'oportunitat d'homenatjar Avenoza brinda la circumstància de reivindicar Berger. Per assolir-ho, aquest article en recupera —i en rellegeix en clau filològica— la contribució «Nouvelles recherches sur les bibles provençales et catalanes » (1890). No endebades, inaugura la recerca acadèmica entorn de les traduccions bíbliques catalanes medievals a partir dels testimonis manuscrits. A més, articula la proposta primicera adreçada a donar-ne raó amb una voluntat global. I, principalment, orienta, amb les seves afirmacions conclusòries, totes les percaces posteriors sobre aquestes traduccions bíbliques, entre les quals destaquen les de Josep Perarnau (1978-1983), Josep Izquierdo (1997), Armand Puig (1997-2001) i Pere Casanellas / Armand Puig (2004-2021). Comptat i debatut, heus aquí l'estela també prosseguida per Avenoza.
Els coarbs Mac Craith, un «fust cavat» i una vila que en realitat era una illa (Quatre notes al Viatge al Purgatori de Sant Patrici de Ramon de Perellós)
Authors: Renedo Xavier
Published: December 2022

Estudi de quatre detalls del Viatge al Purgatori de sant Patrici que demostren que, sense cap mena de dubte, Ramon de Perellós va entrar al pou de sant Patrici al desembre del 1397. En primer lloc, es relaciona el senyor de «la Processó» del relat de Perellós amb el coarb de la família Mac Craith de Termon, una mena d’administrador eclesiàstic del santuari de Station Island; en segon lloc, seguint un suggeriment de G. P. Maggioni, es proposa una explicació per a l’aparició del terme montanyhas en les immediateses del Loch Deirgeirt; en tercer lloc, es demostra que la localització en una «vila» del priorat de Station Island és un mer lapsus calami i, finalment, s’identifica la «barca d’un fust cavat» amb què Perellós va arribar a Station Island amb una canoa, un tipus d’embarcació molt corrent en els rius i els llacs de la Irlanda medieval.
Ressenya: Les nostres comparances: un llibre que ens calia
Authors: Ortís Pere
Published: December 2022

Ressenya de Reig, Eugeni S.: Les nostres comparances. https://reig.lletres.net/comparances.
Evaluasi Program Boarding School dalam Upaya Meningkatkan Mutu Lulusan di MAN 1 Gunungkidul
Authors: Iswahyudi Jauhari
Published: December 2022

This research aims to obtain empirical descriptions and evaluate the implementation of boarding school program at MAN 1 Gunungkidul. This research is an evaluation study that uses a qualitative approach. The evaluation model used is a formative evaluation model developed by Scriven. In this study, evaluation criteria were set before data collection, which was developed through library review and based on the guidelines for organizing boarding school program compiled by the Management Team of Boarding School MAN 1 Gunungkidul. The data analysis techniques used are qualitative analysis techniques according to Miles and Huberman that include four main activities, namely: data collection, data presentation, data reduction and conclusion drawing. The results showed: (1) The selection system of boarding school program participants is carried out objectively and transparently using the procedures specified by madrasa, (2) Funding for boarding school program is largely the responsibility of the committee and zakat funds, only a small portion of which is a burden on parents of the parents of the student guardians, (3) Dormitory facilities are still not ideal, need to be built adequate dormitories to maintain the boarding school program, and (4) The learning achievement of boarding school students in both academic, religious and non-academic fields is still lacking.
Efektivitas Pembelajaran Daring pada Mata Pelajaran IPA di Masa Pandemi Covid-19: Studi Komparasi Pembelajaran Luring dan Daring pada Mata Pelajaran IPA SMP
Authors: Ekantini Anita
Published: December 2022

The Covid-19 pandemic affects all areas of life, including education. The Covid-19 pandemic prompted the government to issue a distance learning policy. Online learning is one of solution to solve this problem. The objectives of this study were: (1) to compare the differences in science learning outcomes between offline learning and online learning, and (2) to determine the effectiveness of online science learning during the Covid-19 pandemic. This research is a quasi-experimental study using the comparative method. Science learning outcomes before the Covid-19 pandemic (offline) were compared with science learning outcomes during the Covid-19 pandemic (online). The findings of this research were (1) there were differences in students 'science learning outcomes in offline learning with students' science learning outcomes in online learning, and (2) offline science learning was more effective than online science learning.
Peningkatan Kompetensi Membaca Teks Berbahasa Arab melalui Metode Qiraah Mata Pelajaran Bahasa Arab di MTs Negeri 8 Karangmojo
Authors: Khotiah Siti
Published: December 2022

This research aims to describe the implementation of professional method in improving students ' competency in reading Arabic text in class VII-A students at MTs Negeri 8 Karangmojo, in the even semester, school year 2018/2019. The study uses action research methods in two cycles. The results showed increased student reading competence gained through several activities, namely: 1) demonstrating reading, saying letters, words (Mufrodaat), sentences, and phrases aloud and repeatedly; 2) Habituation of reading Al-Quran (Tadarus) with teacher monitoring; and 3) memorization deposits. The ability to read students on Arabic text increases on each cycle with an average of 28 percent of the 26 students; 53.85% in good criteria, 38.46% in very good criteria, and 7.69% in less good criteria. Qiraah method can improve the students ' ability to read Arabic text.
Pengaruh Kinerja Guru Bersertifikasi terhadap Prestasi Belajar Siswa di MI Ma'had Islamy Kotagede Yogyakarta
Authors: Sumarsih
Published: December 2022

This research aims to analyze the influence of certified teacher performance on student learning achievement in MI Ma'had Islamy Kotagede Yogyakarta. This research is a field research (research feed) with a quantitative approach. The data collection method uses document questionnaires. The results showed that the performance of MI Ma'had Islamy certified teachers can be categorized very well, the learning achievement of MI Ma'had Islamy students is also in the good category, while the author's hypothesis is rejected. There is no significant influence between the performance of certified teachers on the learning achievement of students in MI Ma'had Islamy. The government certification program has an impact on the performance of MI ma'had Islamy teachers but has no effect on students' learning achievement.
Strategi Modelling the Way: Upaya Meningkatkan Aktivitas dan Kemampuan Siswa dalam Melakukan Salat Wajib di SD Negeri Tancep 1 Ngawen
Authors: Satiman
Published: December 2022

This study aims to describe the increase in activities and ability to perform compulsory prayers through modelling the way strategy in grade V students of SD Negeri Tancep 1 Ngawen Semester 2 of 2016/2017. This research uses the Action research method. Data is collected through observations, interviews, and tests or assignments, while data analysis is done with interactive models. The results showed that the implementation of Modelling the Way strategy can improve the activities and ability to perform compulsory prayers in students. Learning activity from cycle I to cycle II increased in the aspect of reading the prayer pillars increased by 21.8% from the good category to excellent; the aspect of reading the prayer requirement increased by 14.8% from the good category to excellent; aspects of reading things that cancel prayers increased by 15.7% from the good category to very good; and aspects of prayer practice increased by 18.3% from the good category to excellent. Student learning outcomes from the initial condition to cycle II also experienced a significant increase from 7 students (30%) 23 students (100%) category. There was an increase of 16 students (70%) and the average grade from 60.2 to 85.0 increased by 24.8. Modelling the Way strategy can be applied to the learning process in the classroom.
Peningkatan Hasil Belajar Akidah Akhlak Materi Aliran dan Tokoh Ilmu Kalam melalui Metode Snowball Throwing di Madrasah Aliyah Salafiyah Kota Cirebon
Authors: Istijabah
Published: December 2022

This study aims to improve the learning outcomes of Akidah Akhlak through the Snowball Throwing Method. The subject of the study was a grade XI IPA 1 MA Salafiyah Cirebon student in the 2017/2018 school year. This study uses the Class Action method through two cycles. Data is collected through tests, observations, and documentation. The results showed that from the pre-cycle process, cycle I, and cycle II experienced a significant increase. Pre-cycle and cycle I results were at 45.7% percentage, increasing to 97.1% in cycle II. While the average grade value has an average score of 72.4 on pre-cycle, 74.9 on cycle I, and 90.7 on cycle II. Snowball throwing method can improve students' learning outcomes in MA Salafiyah Cirebon.
Words Review Method: Peningkatan Keterampilan Mendengarkan (Listening) Mata Pelajaran Bahasa Inggris pada Siswa SMA Negeri Sugihwaras
Authors: Fitriani
Published: December 2022

This study aims to improve listening skills for students of SMA Negeri 1 Sugihwaras through the application of review words method. This study is based on the low interest of learners towards listening. Students think that the learning delivered by educators and the methods used are boring and do not vary. This study uses experimental methods by giving treatment or action to learners through a strategy of listening, repeating, saying, in listening learning using a series of observation sheets. The results showed that the method of listening, reworking Review Words Method, said, as one of the efforts to improve the listening power is very effective and provide a significant improvement of listening skills for students.
Penggunaan Google Workspace untuk Meningkatkan Hasil Belajar Peserta Didik pada Pembelajaran Daring
Authors: Rahayu Erna
Published: December 2022

This study aims to improve the students’ achievement and involvement during the online learning by using the applications of Google Workspace. The subjects of the research were the students of grade 9B of MTs Negeri 1 Bantul in the academic year 0f 2021/2022. The research implemented the stages of Class Action Research through two cycles that include planning, implementing, observing, and reflecting activities. The result showed that the use of Google Workspace is able to improve the students’ achievement and involvement in the online learning. The improvement of students’ achievement can be seen from the increasing of the mean of evaluation which was 77,5% on Cycle 1 and 84% on Cycle 2. There was also increasing on the number of students who are able to exceed the passing grade that was 76% on Cycle 1 and 82.1% on Cycle 2. The students’ involvement is also improved. The numbers of students involved in Cycle 1 and Cycle 2 were 81.3%.
Teknik Supervisi Individual: Peningkatan Kompetensi Guru MI dalam Membuat Media Pembelajaran dengan Paint dan Power Point di MIN 7 dan MI Yappi Semoyo Patuk Gunungkidul
Authors: Karmanto Karmanto
Published: December 2022

This research aims to find out the ability of Madrasah Ibtidaiyah teachers in making simple learning media with paint and power points for the teaching and learning process. The ability of teachers in making learning media can make it easier to achieve learning goals as specified in the learning implementation plan. This research uses action research methods and is carried out in two cycles. The results showed that individualized supervision techniques are one form of assistance focused on individual activities related to improving the quality of learning. The implementation of supervise conducted with guidance and training can improve the teacher's ability to create learning media with paint and power points. In cycle I, of the 8 teachers who were objected, 3 teachers or 37.50% were sufficiently cryptic and 5 teachers or 62.50% were less cryptic. The cycle I average value of 66.88 increased in cycle II to 84.58 or increased by 27.66%. After being given action on cycle II the ability of 8 teachers to make learning media with paint and power paint to 100%, 7 teachers got good criteria, one of which with very good criteria with a score of 92.78 or 12.50%.
Jigsaw Learning: Peningkatan Hasil Belajar Matematika di MTs Negeri 1 Indramayu
Authors: Daryono Daryono
Published: December 2022

This research aims to improve the quality of the learning process and know the improvement of fractional material mathematical learning outcomes through the application of jigsaw-type cooperative learning models. This research uses action research methods carried out in stage 2 of the cycle. The research subject is Class IX-A MTs Negeri 1 Indramayu Year of Study 2017/2018. The results showed the learning process was natural and the quality of learning was more important than the results. In terms of the completion of student learning classically, namely in cycle I by 69%, it can increase to 100% in cycle II and in terms of the average value of evaluation results, namely in cycle I by 71.9 to 80 in cycle II with an increase of 8.1%. The results of this study also showed an increase in the level of student learning activity from 3.2 with the Category Of ModerateLy Active in cycle I to 4.6 active category in cycle II, with an increase of 1.4. The jigsaw type cooperative learning model can be applied to students in class IX madrasah Tsanawiyah.
Upaya Meningkatkan Motivasi dan Hasil Belajar Siswa pada Mata Pelajaran IPS melalui Pendekatan Cooperative Learning Tipe STAD di MTs Negeri 1 Indramayu
Authors: Saputra Suwanda
Published: December 2022

This research aims to find out the effectiveness of the application of cooperative learning (CL) approach type STAD in an effort to increase the motivation to learn mathematics of students Class IX-C MTs Negeri 1 Indramayu. This research uses action research methods carried out in two cycles, each cycle covering planning, implementation, observation and reflection activities. The final results of the action in cycle II showed that the teacher's observation results obtained an average score (4.43) and the student's observation result reached an average score (4.32). While the impact of increasing learning motivation is the increasing acquisition of student learning outcomes reaching an average score (82.60), meaning that the success indicator (>4.0) has been exceeded. Because the success indicator has been proven the research is declared successful and stopped in cycle II.
Upaya Meningkatkan Kompetensi Guru Bahasa dalam Menulis Buku Fiksi melalui Bimbingan Kelompok di MTs Negeri 6 Kulon Progo
Authors: Barokatussolihah
Published: December 2022

This research aims to find out the application of group guidance as an effort to improve the competence of language teachers in writing fiction books in MTs Negeri 6 Kulon Progo. This research uses academic supervision techniques through group guidance. Based on the results of guidance, it can be concluded that there is an increase in the competence of language teachers in writing fiction books by 95%. As a result of the data group's guidance, there were 7 language teachers who wrote books both single and anthology along with offline or online guidance. Overall, this best practice activity has succeeded in improving the literacy skills of language teachers through group guidance.
Pengembangan LKPD Berbasis PBL Berbantuan PhET Simulation untuk Meningkatkan Hasil Belajar IPA pada Materi Getaran dan Gelombang di MTs Negeri 1 Bantul
Authors: Sumiasyih
Published: December 2022

This study aims to analyze the implementation of learning and improve student learning outcomes through the development of PBL-based LKPD assisted by PhET Simulation on vibration and wave materials. This study used the LKPD development design with two experiments. The results of this study provide data on the implementation of learning at the first and second meetings with a percentage of 100% with very good criteria. The results of students' responses to this learning obtained a score of 8.94 with a high category. The improvement in cognitive learning outcomes in vibrational materials with the Gain-score calculation at the first meeting was 0.35 increased to 0.56. At the second meeting the wave material entered the moderate category, with the interpretation of the effectiveness of N-Gain at a percentage of 56-75 categories quite effective. Improved learning on the affective aspect, the experimental results at the first meeting obtained an average of 75.0 rising to 86.3 at the second meeting. The results of the observation of student activities with an average score of 88.22 at the first meeting increased to 88.33 at the second meeting with excellent student activity criteria. PBL-Based LKPD Assisted PhET Simulation can be applied to students at the Tsanawiyah madrasah level.
Peningkatan Kompetensi Guru dalam Penyusunan Soal HOTS melalui Workshop di MTs Negeri 5 Kulon Progo
Authors: Al Amien Asnah
Published: December 2022

This study aims to improve the competence of teachers in compiling Higher Order Thinking Skills (HOTS) questions through workshop activities. This research is an action research with the subject of the study being teachers at MTs Negeri 5 Kulon Progo. Data are collected through observation, interviews. This research was conducted in 2 cycles covering planning, implementation, observation, and reflection activities. The results showed an increase in teacher competence in compiling HOTS questions. In cycle I, the average value of studying HOTS questions was 86% increased to 94% in cycle II. This means that workshop activities can improve teacher competence in compiling Higher Order Thinking Skills questions.
Peningkatan Kompetensi Guru dalam Menyusun Penelitian Tindakan Kelas melalui Pendidikan dan Pelatihan di MAN 1 Sleman
Authors: Soir
Published: December 2022

Classroom Action Research (PTK) is one of the factors that affect teacher competence. Improvement of learning in the classroom can be done through classroom action research because it places teachers as researchers, as agents of change whose work patterns are creative and innovative. This study aims to improve competence in compiling PTK through education and training. This research is an action research carried out in two cycles including planning, action, observation, and reflection activities. Data collection techniques use observation, interviews and evaluation. The results of education and training to compile PTK show that teachers actively participate in compiling PTK. PTK training activities have an impact on increasing significant knowledge about understanding PTK data processing and analysis. The training process improves teacher understanding of ptk, fosters motivation in compiling PTK and implementing PTK, and improves madrasah performance through increasing teacher professionalism. The results of this research can be used as input for teachers in other madrasahs as an effort to improve teacher competence through Classroom Action Research.
Peningkatan Hasil Belajar Fisika Melalui Pendekatan Konstruktivisme dengan Metode Siklus Belajar Karplus di MAN 2 Cirebon
Authors: Imas Salamah
Published: December 2022

This study aims to determine the improvement of physics learning outcomes through a constructivism approach with the Karplus cycle learn method. This research is an action research, conducted in two cycles including planning, implementation, observation, and reflection activities. The subject of the study was a student of class XI MIA 2 MAN 2 Cirebon city. The results showed that the average score of learning outcomes in cycle I of 37.83% increased to 94.59% in cycle II. Based on the assessment of the results of affective and psychomotor observations, there was an increase from cycle I to cycle II. The results of affective observations in cycle 1 of 54.18% increased to 81.26% in cycle II. The results of psychomotor observations in cycle I of 65.16% increased to 74.47% in cycle II. The implementation of learning by applying a constructivism approach with the karplus cycle learn method can improve physics learning outcomes in class XI MIA 2 MAN Cirebon city.
A DFT Study of Graphene as a Drug Carrier for Gemcitabine Anticancer Drug
Authors: Abahussain Abdulaziz A.M. , Zaidi S.Z.J. , Nazir M.H. , Raza M. , Nazir M.H. , Hassan S.
Published: December 2022

Research is being carried out worldwide for possible treatment of cancer. Graphene has been studied as a drug carrier for various cancer-related drugs [1-2]. In the present work, we apply theoretical models to study the electrons interactions, thermodynamic properties, and solvent interaction of the drug-carrier configuration. The stability of graphene means that it can be a nanocarrier in the biological system. The simulations result shows that graphene provides a stable base, where gemcitabine is a highly dissolvable and reactive drug. The adsorption of gemcitabine on the graphene was physical. The drug carrier configuration formed a highly impactful drug-carrier design.
Effect of Calcination Temperature on the Morphology, Crystallinity, and Photocatalytic Activity of ZnO/TiO2 in Selenite Photoreduction from Aqueous Phase
Authors: Usman A.K. , Aris A. , Labaran B.A. , Darwish M. , Jagaba A.H.
Published: December 2022

In this study, ZnO/TiO2 was synthesized using the sol-gel method. The effect of calcination temperature was investigated on the morphology, crystal size, and influence on the photoreduction of selenite from the aqueous phase. The ZnO/TiO2 was calcined at 150 C, 350 C, and 500 C for 2 hours. The samples were characterized using SEM/EDX, XRD, and FT-IR for morphology/elemental composition, crystal structure/size, and functional group. The crystallite sizes were found to be 21.61 nm, 22.22 nm, and 24.80 nm for the temperatures, respectively. The composite morphology was found to be agglomerated granular particles that increase in agglomeration as the temperature increases. EDS results give the composition of Ti, Zn, and O2 in all samples, indicating the presence of ZnO and TiO2. XRD spectra were used to confirm the hexagonal and tetrahedral phase structure of the ZnO and TiO2. Photocatalysis experiment was conducted at pH 4 and 1 mg/L ZnO/TiO2 with 20 ppm initial concentration for 22 hrs under UV- irradiation. The catalyst calcined at 150 C showed 100% photoreduction of selenite to total selenium, while samples calcined at 350 C and 500 C showed 79% and 17%, respectively.
Electrochemical Characteristics of the Anodized Titanium Oxide Films in Sulfuric Acid
Authors: Pešovski Branka , Krstić Vesna , Dimitrijević Silvana
Published: December 2022

This article presents some research into titanium electrode anodizing in H2SO4 solutions in the potential range –1 to 5 V at different scan rates (10, 50, 100 mV s–1) using cyclic voltammetry measurements. Linear potentiodynamic measurements had used before and after the oxide layer formed on the titanium surface. The characterization and the exact determination of the titanium oxides species on the Ti substrate surface had performed by XRD and SEM-EDS analyses. Three characteristic oxide peaks appeared in the electrochemical measurements. These had observed at 0.2 V, 2.3 V, and 3.5 V on cyclic voltammetry curves at all scan rates for all H2SO4 concentrations. Even more, cyclic voltammetry measurements showed that all peaks observed were evident even at higher scan rates. That suggested that robust oxidation of the Ti surface had occurred. Voltammetric tests showed that the passivation of the titanium surface was effective. XRD and SEM-EDS measurements confirmed the existence of TiO2 species in a crystalline form on the titanium surface after anodizing in 3M H2SO4 and annealing the anodized Ti electrode at 400℃ in the airflow. A significant increase in the loading of TiO2 film annealed at 400℃ of the previous anodized Ti anode in H2SO4 was registered.
Implantation of Coated Superconducting Materials in the Synchronous Machine for Superconducting Energy Storage
Authors: Belkhiri Salah , Ghemari Zine , Khene Mohamed Lotfi , Mebarek Fethi Ben , Saad Salah
Published: December 2022

Numerical tools appear to be essential for modeling and designing devices based on superconducting materials. In this article different simulation results are presented, using a computer code based on the finite element method adopted for the resolution of the electromagnetic equations, in the case of an axisymmetric two-dimensional problem, with this code we study the variations of the different electromagnetic quantities. The second generation superconductor has been modeled as an interesting diamagnetic material as inductive pulse sources. The performance in magnetic field resistance, energy storage and thermal stability of the ribbon, known as YBCO, makes it possible to broaden its field of application. Two categories of machines have been proposed and analyzed, the first is classic and the second uses a superconducting ribbon. In addition, a comparative study between the two proposed models is carried out and the results are analyzed and discussed.
Perbandingan Rasio Lingkar Leher Terhadap Jarak Tiromental dengan Skor Mallampati dan Jarak Tiromental Sebagai Prediktor Kesulitan Visualisasi Laring pada Pasien Bedah Elektif Di RSUPN Cipto Mangunkusumo
Authors: Firdaus Riyadh , Marsaban Arif HM , Basri Roniza
Published: December 2022

Latar Belakang: Skor mallampati dan jarak tiromental (TMD) banyak digunakan sebagai prediktor kesulitan visualisasi laring preoperatif, namun akurasi kedua penanda tersebut masih dipertanyakan.Tujuan: Penelitian ini mengevaluasi prediktor kesulitan visualisasi laring (difficult visualization of larynx, DVL) preoperatif baru yaitu rasio lingkar leher (NC) terhadap jarak tiromental TMD dibandingkan dengan skor mallampati dan jarak tiromental.Metode: Sebanyak 217 pasien yang menjalani anestesi umum untuk bedah elektif dievaluasi dengan menggunakan skor mallampati, TMD dan rasio NC/TMD. Dan titik potong untuk masing-masing prediktor jalan napas adalah skor mallampati III dan IV, < 6,5 cm, ≥ 5. Pada saat dilakukan laringoskopi langsung, visualisasi laring dinilai berdasarkan klasifikasi cormack-lehane (CL). Skor CL derajat III dan IV dianggap sulit visualisasi. Kemudian ditentukan dan dibandingkan nilai area dibawah kurva (AUC), sensitifitas, spesifisitas untuk setiap prediktor jalan napas.Hasil: Pada penelitian ini, dari 217 subjek penelitian, mudah dalam visualisasi laring (easy visualization of larynx, EVL) didapatkan 197 orang (90,8%), sedangkan sulit dalam visualisasi laring (DVL) sebanyak 20 orang (9,2%). Kemudian didapatkan hasil TMD dengan kesulitan visualisasi laring pada DVL sebesar 28% dan EVL sebesar 72% (p=0,000), sedangan rasio NC/TMD dibandingkan dengan kesulitan visualisasi didapatkan 22,4% pada DVL dan 77,6% pada EVL (p=0,000). Area dibawah curve (AUC) rasio NC/TMD (96,2%) lebih baik dibandingkan dengan skor mallampati (64%) dan TMD (83%).Kesimpulan: Akurasi rasio NC/TMD lebih baik dibandingkan dengan skor mallampati dan TMD.
Pengaruh Nitrous Oxide Pada Induksi Sevofluran 8% Dengan Tehnik Single Breath Terhadap Kecepatan Induksi Anestesi
Authors: Anindita Tinon , Witjaksono Witjaksono , Primatika Aria Dian
Published: December 2022

Latar Belakang: Penambahan nitrous oxide pada induksi anestesi akan mempercepat waktu induksi, oleh karena adanya second gas effect dan concentration effect.Tujuan: Membandingkan kecepatan induksi anestesi sevofluran 8% dengan atau tanpa nitrous oxide, dengan menggunakan tehnik single breath vital capacity induction. Metode: Tujuh puluh dua pasien tanpa diberikan premedikasi , dibagi dalam 3 kelompok secara random dan diminta untuk menghirup salah satu dari tiga campuran gas dengan tehnik single breath vital capacity : kelompok I diberikan sevofluran 8% + Oksigen, keiompok II diberikan sevofluran 8% + 50% nitrous oxide dan kelompok III diberikan sevofluran 8% + 66 2/3% nitrous oxide. Dicatat waktu saat hilangnya reflek bulu mata dan komplikasi yang terjadi. Tekanan darah (sistolik, diastolik, tekanan arteri rerata), laju jantung dan saturasi oksigen diukur sebelum dan sesudah induksi. Data diuji dengan Student T Test dan ANOVA dengan derajat kemaknaan < 0,05.Hasil: Karakteristik penderita (umur, usia, berat badan dan lain-lain) pada ketiga kelompok berbeda tidak bermakna. Waktu saat hilangnya reflek bulu mata untuk kelompok sevofluran 8% + 50% nitrous oxide (24,96 ±4,14 detik), dan untuk kelompok sevofluran 8% + 66 2/3% nitrous oxide (24,81 ± 3,85 detik) lebih sepat dibandingkan dengan kelompok sevofluran 8% + Oksigen (27,21 ±4,14 detik) , tetapi perbedaan ini tidak bermakna (p=0,098), Perubahan tekanan darah (sistolik, diastolik, tekanan arteri rerata), laju jantung dan saturasi oksigen yang terjadi pada ketiga kelompok berbeda tidak bermakna. Komplikasi induksi anestesi yang terjadi pada kelompok sevofluran 8% dengan nitrous oxide lebih sedikit dibandingkan dengan kelompok sevofluran 8% tanpa nitrous oxide , tetapi perbedaan ini tidak bermakna.Kesimpulan: Penambahan Nitrous oxide pada induksi anestesi dengan sevofluran 8% dengan tehnik single-breath, tidak mempercepat waktu induksi anestesi.
Pengaruh Anestesi Epidural Terhadap Supresi Imun Yang Diinduksi Stres Operasi Selama Pembedahan
Authors: Yudhowibowo Ifar Irianto , Sutiyono Doso , Villyastuti Yulia Wahyu
Published: December 2022

Operasi besar berhubungan dengan disfungsi sistem kekebalan tubuh bawaan. Baru-baru ini, dibuktikan bahwa stres akibat pembedahan dapat dengan cepat menginduksi penurunan respon sementara dari darah terhadap endotoksin sejak 2 jam setelah insisi dan bahwa IL-10 plasmayang meningkat selama pembedahan, berperan dalam penurunan respon ini. Telah dilaporkan bahwa anestesi epidural memiliki efek menguntungkan pada reaksi imunitas dan respon terhadap stres akibat pembedahan. Beberapa peneliti telah melaporkan bahwa anestesi epidural mempertahankan aktivitas sel NK dan mengurangi respon stres pada pasien yang menjalani histerektomi. Blok epidural dari segmen dermatom T4 sampai S5, dimulai sebelum pembedahan, mencegah peningkatan konsentrasi kortisol dan glukosa pada histerektomi. Teknik anestesi regional untuk operasi besar dapat mengurangi pelepasan kortisol, adrenalin (epinefrin) dan hormon lain, namun memiliki pengaruh kecil pada respon sitokin. Penelitian terbaru (kawasaki et al.,2007) menunjukkan bahwa sistem kekebalan tubuh bawaan, misalnya fagositosis, ditekan oleh stres akibat pembedahan dan bahwa anestesi epidural tidak mampu mencegah penurunan respon kekebalan tubuh ini selama operasi perut bagian atas.
Mekanisme Kerja Obat Anestesi Lokal
Authors: Samodro Ratno , Sutiyono Doso , Satoto Hari Hendriarto
Published: December 2022

Anestesi regional semakin berkembang dan meluas pemakaiannya, mengingat berbagai keuntungan yang ditawarkan, diantaranya relatif lebih murah, pengaruh sistemik yang minimal, menghasilkan analgesi yang adekuat dan kemampuan mencegah respon stress secara lebih sempurna. Secara kimiawi obat anestesi lokal dibagi dalam dua golongan besar, yaitu golongan ester dan golongan amide. Perbedaan kimia ini direfleksikan dalam perbedaan tempat metabolisme, dimana golongan ester terutama dimetabolisme oleh enzim pseudo-kolinesterase di plasma sedangkan golongan amide terutama melalui degradasi enzimatis di hati. Perbedaan ini juga berkaitan dengan besarnya kemungkinan terjadinya alergi, dimana golongan ester turunan dari p-amino-benzoic acid memiliki frekwensi kecenderungan alergi lebih besar. Obat anestesi lokal yang lazim dipakai di negara kita untuk golongan ester adalah prokain, sedangkan golongan amide adalah lidokain dan bupivakain. Mekanisme kerja obat anestesi local mencegah transmisi impuls saraf (blokade konduksi) dengan menghambat pengiriman ion natrium melalui gerbang ion natrium selektif pada membrane saraf. Kegagalan permeabilitas gerbang ion natrium untuk meningkatkan perlambatan kecepatan depolarisasi seperti ambang batas potensial tidak tercapai sehingga potensial aksi tidak disebarkan. Obat anestesi lokal tidak mengubah potensial istirahat transmembran atau ambang batas potensial. Farmakokinetik obat meliputi absorpsi, distribusi, metabolisme dan ekskresi. Komplikasi obat anestesi lokal yaitu efek samping lokal pada tempat suntikan dapat timbul hematom dan abses sedangkan efek samping sistemik antara lain neurologis pada Susunan Saraf Pusat, respirasi, kardiovaskuler, imunologi ,muskuloskeletal dan hematologi Beberapa interaksi obat anestesi lokal antara lain pemberian bersamaan dapat meningkatkan potensi masing-masing obat. penurunan metabolisme dari anestesi lokal serta meningkatkan potensi intoksikasi.
Perbedaan Pengaruh Pemberian HES 6 % Dalam Larutan Berimbang Dengan HES 6 % Dalam Larutan Nacl 0,9 % Terhadap Perubahan pH, Strong Ion Difference Dan Klorida Pada Pasien Bedah Sesar Dengan Anestesi Spinal
Authors: A Suriyadi , Harahap Mohamad Sofyan , Leksana Ery
Published: December 2022

Latar belakang penelitian : Pemberian koloid sebagai preload pada bedah sesar dengan anestesi spinal lebih efektif dibandingkan kristaloid. Kebijakan pemilihan koloid berdasarkan jenis pelarutnya mulai dikembangkan terkait dengan dampak terhadap keseimbangan asam-basa.Tujuan : Melihat perbedaan pengaruh pemberian preload HES 6% dalam larutan NaCl 0,9% dengan HES 6% dalam larutan berimbang terhadap perubahan pH, SID dan kadar klorida pada pasien bedah sesar dengan anestesi spinal.Metode : Merupakan uji klinik eksperimental tahap II yang dilakukan secara acak tersamar ganda, menggunakan consecutive sampling, dibagi dua kelompok (n=24), kelompok HES 6% dalam larutan berimbang dan HES 6% dalam larutan NaCl 0,9%. Uji statistik t-test atau Wilcoxon signed rank test digunakan untuk membandingkan nilai pHSID, dan kadar klorida pada masing-masing kelompok, sedangkan uji statistik antarkelompok digunakan independent t-test atau Mann-Whitney U-test.Hasil : Nilai pH, SID, dan kadar klorida sebelum dan sesudah operasi antara NaCl 0,9% terdapat perbedaan yang tidak bermakna (p>0,05)Kesimpulan : Terdapat penurunan pH, penurunan SID dan peningkatan kadar klorida pada kelompok HES 6% dalam larutan NaCl 0,9% dibandingkan HES 6% kelompok HES 6 % dalam larutan berimbang dan HES 6% dalam larutan terdalam larutan berimbang secara tidak bermakna.
Awareness dan Recall Intraoperatif
Authors: Rofiq Aunun , Witjaksono Witjaksono , Nurcahyo Widya Istanto
Published: December 2022

Laporan ASA terbaru mengenai awareness intraoperatif yang dilakukan oleh ASA dipusatkan seputar recall postoperative. Seperti dapat disimpulkan dari Bab ini, awareness introperatif dan recall postoperative bukanlah fenomena yang tidak berhubungan sama sekali, sehingga membolehkan para klinisi dan peneliti untuk menggunakan salah satu di antara keduanya sebagia substitusi bagi yang lain. Recall secara khas memberikan estimasi yang tidak sebenarnya terhadap insidensi awareness intraoperatif dan hanya merepresentasikan puncak dari fenomena gunung es. Monitor fungsi otak tidak dapat memprediksi recall dengn sangat baik, tetapi lebih baik dari parameter otonom yang tradisional dalam mengetahui hilang atau timbulnya kesadaran. Monitor fungsi otak merepresentasikan perkembangan yang pesat dalam manajemen praktek anestesi. Kemampuan untuk mengenali awareness intraoperatif dan pencegahannya dengan mempertahankan kedalaman tingkat hypnosis, menawarkan potensi yang besar untuk mencegah recall postoperative.
Historical geography of the pastoral system in Samtskhe-Javakheti, Georgia
Authors: Maisuradze Roman , Khardziani Tamar
Published: December 2022

The Georgian region, Samtskhe-Javakheti, has a long tradition of pastoralism. Our research focused on the study of pastoral agricul¬ture across XVI–XX centuries. The study is based on census documents, which provide information on the number of sheep and their distribution, statistical and modern field-based materials. The research goal was to study the pastoral systems and related socio-eco¬nomic sectors and analyze their spatial and temporal dimensions. The paper presents thematic maps prepared by the authors, which reflect the state of pastoralism in the sixteenth to twentieth centuries and the present situation. The tabular and cartographic material presented allows to assess the changes that have taken place over a long time and to analyze modern conditions.
Mission, or no mission: factors behind knowledge of military language among Czech soldiers
Authors: Radková Lucie , Mádrová Jarmila , Místecký Michal
Published: December 2022

The goal of the study is to analyse the outcomes of a questionnaire survey which concerns understandability of military language used on former Afghanistan missions. Two groups of respondents took part in the survey – 50 soldiers with experience from a foreign mission, 50 soldiers without such experience. The data have indicated that when it comes to decoding randomly generated expressions, an important role is mainly played by the soldiers' other foreign missions, professional specialisations, length of service, and close contact with the participants of the Afghan missions.
O nazwach potraw z ziemniaków w gwarach kujawskich
Authors: Paluszak-Bronka Anna
Published: December 2022

Celem artykułu jest charakterystyka semantyczna i genetyczna kujawskich nazw potraw ziemniaczanych. Pozwala ona nie tylko objaśnić motywację i pochodzenie analizowanych jednostek, ale także odtworzyć utrwalony w nich obraz dawnej wsi, jej kultury, tradycji, wierzeń, wiedzy i umiejętności kulinarnych oraz historii Kujaw. Nazwy potraw są niewątpliwie kopalnią wiedzy o regionie, nie możnabowiem zrozumieć jego dziedzictwa kulturowego bez odwoływania się do zmagazynowanych w języku, a zwłaszcza w warstwie leksykalnej, doświadczeń i wiedzy o świecie wcześniejszych pokoleń.