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All Journal Jurnal Rekayasa Mesin Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil SECONDARY : Jurnal Inovasi Pendidikan Menengah (JIPM) JUrnal Riset Ilmu Pendidikan Takuana: Jurnal Pendidikan, Sains, dan Humaniora Entalpi Pendidikan Kimia SEARCH: Science Education Research Educational Journal
Nisa, Kartini Rahman
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Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Education Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Social Sciences Transportation Other

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Ability of Moringa Ore (Moringa Oleifera) As Biosorbent in Used Cooking Oil Processing Buluk, Susana; Leto, Kristina Tresia; Nisa, Kartini Rahman
Jurnal Riset Ilmu Pendidikan Vol. 3 No. 2 (2023): Jurnal Riset Ilmu Pendidikan
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/jrip.v3i2.352

Abstract

The results of this study stated that the use of activated moringa ore biosorbents had a great influence on the quality of cooking oil both physically and chemically. The results of data analysis based on variations in contact time and dose variations can show that free fatty acid levels have decreased but are not in accordance with the stipulated SNI, namely 0.17%. Activation of Moringa ore using Sodium Hydroxide (NaOH) can reduce the levels of free fatty acids in used cooking oil. Variation of biosorbent contact time can affect the decrease in fatty acid levels, which occurs at the optimum contact time of 90 minutes, the free fatty acid percentage of 0.17% is not in accordance with SNI. Variations in biosorbent doses can also affect the increase in free fatty acid levels, namely the optimum dose of 1.00-gram percentage of free fatty acids decreased by 0.17% not according to SNI. Variations in contact time and variations in optimum doses of biosorbents can also affect color organoleptic tests and the smell of used cooking oil. Where the results of each respondent's statement that 95% of the refined oil using Moringa ore biosorbent are similar to new cooking oil, namely with a bright yellow color. The method used in this study is a quantitative method by conducting experiments on the subjects to be studied and used as a reference for finding and obtaining data directly through observation or experimentation
Pemanfaatan Limbah Serat Alam Kulit Buah Kelor Sebagai Papan Komposit yang Diperkuat Polimer Unsaturated Polyester Resin Jayadin, Jayadin; Nisa, Kartini Rahman; Siti Zuraidah; Leto, Kristina Tresia; Coa, Sri Astuti Rahman; Nurhadyati, Nurhadyati; Mujiburohman, Muhammad; Hikmatiar, Hamzarudin
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 9 No. 2 (2025)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v9i2.17786

Abstract

The use of Composite Materials with natural fiber reinforcement is starting to be widely known in the manufacturing industry, environmentally friendly and recyclable materials. Composites are made to obtain lightweight structures, have higher strength or stiffness, energy absorption and design, have low prices and natural fibers are also easy to obtain, especially moringa fruit skin which is very abundant in the East Nusa Tenggara region, especially in Sikka Regency. This study aims to determine the Bending strength, impact energy and seawater absorption capacity. The research materials are moringa fruit skin fiber and polyester resin. Moringa fruit skin fiber is a waste that is rarely used so it can be a serious waste. This specimen is used with the Cold Compressing Molding method (Molds that are loaded at room temperature). The results of the study showed optimal conditions at a volume fraction of 25%, providing the highest Bending strength of 8,888 MPa, the highest impact energy of 0.196 J / mm2, and the lowest seawater absorption value of 0.79%.
Utilization of Moringa Fruit Peel Waste and Sawdust as Hybrid Composite Boards with Polyester Resin Matrix Leto, Kristina Tresia; Jayadin; Ridwan, Mastura; Coa, Sri Astuti Rahman; Nisa, Kartini Rahman; Mujiburohman, Muhammad; Ismiralda, Ismiralda; Farizi, Zakaria Al
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.6941

Abstract

Environmental damage, previously considered a local problem, has now developed into a global issue, with waste becoming an increasingly pressing issue, especially in developing countries. Inadequate waste management has the potential to cause serious impacts on environmental sustainability and human health. One type of waste that has not been optimally utilized is moringa fruit peel waste and wood sawdust. This waste often causes soil and air pollution because it is left to pile up and burned. Therefore, this study aims to develop a Hybrid composite that combines moringa fruit peel waste and wood sawdust as a reinforcing material, as well as to test the mechanical and physical properties of the resulting composite board. This study uses an experimental approach in the laboratory with variations in waste composition (15%: 5%: 80%), (20%: 10%: 70%), (25%: 15%: 60%) and a composite board thickness of 1 cm. Testing parameters include tensile tests, compression tests, and water absorption. The tensile test results show that the composition of 15% moringa fruit peel fiber and 5% wood sawdust produces the highest tensile strength of 13.622 Mpa. Compression tests showed that a composition of 20% moringa rind fiber and 10% sawdust produced the highest compressive strength of 25.527 MPa. Water absorption tests showed that a composition of 25% moringa rind fiber and 15% sawdust had the lowest, or optimal, water absorption of 1.8%.
Pemanfaatan Aplikasi Socrative Untuk Meningkatkan Hasil Belajar Pada Materi Hakikat Ilmu Kimia Jayadin, Jayadin; Mahmud, Chusnul Mar’iyah; Malmar, Mutia; Rahman, Safitri; Setiawati, Ayuni; Rahman Coa, Sri Astuti; Leto, Kristina Tresia; Nisa, Kartini Rahman
Entalpi Pendidikan Kimia Vol 7 No 1 (2026)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v7i1.521

Abstract

Pendidikan adalah suatu usaha untuk mengubah tingkah laku dan sikap seseorang atau kelompok individu dalam melaksanakan pembelajaran dengan tujuan membantu peserta didik menjadi lebih dewasa secara berpikir dan bersikap. Penelitian ini adalah penelitian kuantitatif dengan desain penelitian Pra-Experimen design dan one group pretest posttest design. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan media aplikasi Socrative terhadap hasil belajar kimia SMAS ST. Petrus Kewapante. Adapun Teknik pengumpulan data yang digunakan dalam penelitian ini adalah tes hasil belajar melalui pretest dan posttest. Instrumen yang digunakan dalam penelitian ini adalah tes hasil belajar. Kemudian untuk Teknik analisis data yang digunakan dalam penelitian ini adalah analisis deskriptif, uji normalitas Shapiro-wilk, Uji Paired sample t-test, dan perhitungan N-gain menggunakan software IBM SPSS statistics 26. Penelitian ini bertujuan untuk mengukur efektivitas perlakuan pembelajaran terhadap peningkatan hasil belajar siswa melalui desain pretest dan posttest. Hasil menunjukan peningkatan rata-rata nilai dari 40.25 menjadi 70.25 dan penurunan standar devisiasi, yang menandakan hasil belajar lebih merata. Uji Shapiro-wilk menunjukan data berdistribusi normal, dan uji paired sample t-test menghasilkan nilai signifikansi 0.000 < 0.05 yang berarti terdapat perbedaan signifikan antara nilai pretest dan posttest. Rata-rata N-Gain sebesar 0.50 termasuk kategori sedang, yang mengindikasikan perlakuan cukup efektif meningkatkan pemahaman siswa
Pengembangan Lembar Kerja Peserta Didik Berbantuan Aplikasi PhET Simulation Pada Materi Asam Basa Windasari, Windasari; Nisa, Kartini Rahman; Nurhadyati, Nurhadyati
Educational Journal Vol. 1 No. 3 (2026): FEBRUARI-APRIL
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/r4n5bt39

Abstract

This study aims to develop and determine the practicality of developing student worksheets assisted by the PhET simulation application on acid-base material in class XI of SMA Negeri 1 Talibura based on assessments from material experts, media experts, and students. The method used in this study is Research and Development (R&D) with the development stages of the RDR model (Research, Development, Research), while the data collection technique in this study uses questionnaires for material expert validation, media expert validation, and student responses. The developed media was tested by 29 students. The student worksheets assisted by the PhET simulation application on acid-base material for class XI at SMA Negeri 1 Talibura obtained an average score from media experts of 86.45% with a very feasible category, and material experts received an average score of 89.77% with a very feasible category, while student responses to the learning media obtained an average score of 86.27% with a very feasible category. Based on the research data obtained, it can be concluded that the use of student worksheets assisted by the PhET simulation application on acid-base material in class XI at SMA Negeri 1 Talibura is suitable for use in learning activities. 
PROFESIONALISME GURU DALAM MENINGKATKAN KUALITAS PROSES PEMBELAJARAN MELALUI KOMPETENSI, KETELADANAN, DAN KEPEMIMPINAN HUMANIS DI SEKOLAH Mahmud, Chusnul Mar’iyah; Nisa, Kartini Rahman
SECONDARY: Jurnal Inovasi Pendidikan Menengah Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/secondary.v6i2.9449

Abstract

The challenges of 21st-century education demand the strengthening of teacher professionalism beyond academic aspects, especially in schools with limited resources such as SMA Negeri 1 Waigete. This study aims to analyze the implementation of teacher professionalism in improving the quality of learning through competence, exemplary behavior, and humanistic leadership. Using a descriptive qualitative approach, the research stages, conducted in January 2026, included in-depth interviews, observations, and documentation with the principal and teachers selected through purposive sampling. The research findings indicate that professionalism is reflected in teacher involvement in school development and the management of emotional and social intelligence. The use of lectures, small group discussions, and practicums has been shown to increase active participation and student discipline. Despite facing obstacles such as low learning motivation and diverse student characters, teachers implement adaptive strategies through personal approaches and individual dialogue. The main conclusion confirms that the synergy between pedagogical competence, emotional maturity, and supportive leadership support is a determining factor in educational quality. Humanistic teacher professionalism has been proven to create a conducive learning ecosystem and serve as a primary foundation for character formation and student academic success amidst various resource limitations in a comprehensive, equitable, and sustainable manner. ABSTRAK Tantangan pendidikan abad ke-21 menuntut penguatan profesionalisme guru yang melampaui aspek akademik, terutama di sekolah dengan keterbatasan sarana seperti SMA Negeri 1 Waigete. Penelitian ini bertujuan menganalisis implementasi profesionalisme guru dalam meningkatkan kualitas pembelajaran melalui kompetensi, keteladanan, dan kepemimpinan humanis. Menggunakan pendekatan kualitatif deskriptif, tahapan penelitian yang dilaksanakan pada Januari 2026 ini meliputi wawancara mendalam, observasi, dan dokumentasi terhadap kepala sekolah serta guru yang dipilih melalui purposive sampling. Temuan penelitian menunjukkan bahwa profesionalisme tercermin dari keterlibatan guru dalam pengembangan sekolah serta pengelolaan kecerdasan emosional dan sosial. Penggunaan metode ceramah, diskusi kelompok kecil, serta praktikum terbukti meningkatkan partisipasi aktif dan disiplin siswa. Meskipun menghadapi kendala berupa rendahnya motivasi belajar dan keberagaman karakter peserta didik, guru menerapkan strategi adaptif melalui pendekatan personal dan dialog individual. Simpulan utama menegaskan bahwa sinergi antara kompetensi pedagogik, kematangan emosi, dan dukungan kepemimpinan suportif merupakan faktor penentu mutu pendidikan. Profesionalisme guru yang humanis terbukti mampu menciptakan ekosistem belajar kondusif sekaligus menjadi fondasi utama dalam pembentukan karakter serta kesuksesan akademik siswa di tengah berbagai keterbatasan sumber daya secara komprehensif, merata dan juga berkelanjutan.
Optimasi Pemurnian Minyak Jelantah Menggunakan Lempung Teraktivasi Asam Klorida melalui Variasi Waktu Kontak dan Dosis Yuliati, Fransiska; Nisa, Kartini Rahman; Leto, Kristina Teresia
Takuana: Jurnal Pendidikan, Sains, dan Humaniora Vol. 5 No. 1 (2026): Takuana (April-June)
Publisher : MAN 4 Kota Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56113/takuana.v5i1.465

Abstract

This study aims to optimize the purification of waste cooking oil using hydrochloric acid (HCl)-activated clay as an adsorbent. Repeated use of cooking oil causes chemical degradation, leading to an increase in free fatty acids and the formation of harmful compounds that pose health risks. Therefore, an effective and economical purification method is required. This research employed a factorial experimental design by varying contact time (20, 40, and 60 minutes) and adsorbent dosage (1, 2, and 3 grams). The effectiveness of the treatment was evaluated based on acid number, color, and odor, and the data were analyzed descriptively. The results showed that activated clay significantly improved the physical characteristics of the oil by reducing unpleasant odor and increasing clarity. The lowest acid number based on contact time was obtained at 40 minutes (2.8 mg NaOH/g), while the optimum adsorbent dosage was 2 grams (1.6 mg NaOH/g). However, the resulting acid values have not yet met the Indonesian National Standard (SNI). These findings indicate that HCl-activated clay has strong potential as a low-cost adsorbent for waste cooking oil purification, although further optimization is required to meet quality standards.
The Effect of a Guided Inquiry Learning Model Based on E-Modules on Students’ Problem Solving Skills Rezeki, Sri Minarni; Nisa, Kartini Rahman; Jayadin, Jayadin
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.2815

Abstract

This study aims to examine the effect of a guided inquiry learning model based on E-Modules on students’ problem-solving abilities. The research was conducted at SMA St. Petrus Kewapante. The sample consisted of 20 students, all of whom were included in the study. This research employed a quantitative method, which is based on objective measurement of numerical data to test the formulated hypotheses. The test results were analyzed statistically to determine significance, with the expectation of obtaining objective, measurable, and generalizable data in accordance with the population characteristics. The findings indicate a significant improvement in students’ problem-solving abilities after the implementation of the guided inquiry learning model based on E-Modules. This is evidenced by a statistically significant difference between pretest and posttest mean scores (p < 0.001) and an N-Gain score in the moderate category (mean = 0.5024 or 50.24%). Furthermore, the results of normality and homogeneity tests show that the data are normally distributed and homogeneous, indicating that the parametric statistical analysis used is valid and reliable.
PROFESIONALISME GURU DALAM MENINGKATKAN KUALITAS PROSES PEMBELAJARAN MELALUI KOMPETENSI, KETELADANAN, DAN KEPEMIMPINAN HUMANIS DI SEKOLAH Mahmud, Chusnul Mar’iyah; Nisa, Kartini Rahman
SECONDARY: Jurnal Inovasi Pendidikan Menengah Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/secondary.v6i2.9449

Abstract

The challenges of 21st-century education demand the strengthening of teacher professionalism beyond academic aspects, especially in schools with limited resources such as SMA Negeri 1 Waigete. This study aims to analyze the implementation of teacher professionalism in improving the quality of learning through competence, exemplary behavior, and humanistic leadership. Using a descriptive qualitative approach, the research stages, conducted in January 2026, included in-depth interviews, observations, and documentation with the principal and teachers selected through purposive sampling. The research findings indicate that professionalism is reflected in teacher involvement in school development and the management of emotional and social intelligence. The use of lectures, small group discussions, and practicums has been shown to increase active participation and student discipline. Despite facing obstacles such as low learning motivation and diverse student characters, teachers implement adaptive strategies through personal approaches and individual dialogue. The main conclusion confirms that the synergy between pedagogical competence, emotional maturity, and supportive leadership support is a determining factor in educational quality. Humanistic teacher professionalism has been proven to create a conducive learning ecosystem and serve as a primary foundation for character formation and student academic success amidst various resource limitations in a comprehensive, equitable, and sustainable manner. ABSTRAK Tantangan pendidikan abad ke-21 menuntut penguatan profesionalisme guru yang melampaui aspek akademik, terutama di sekolah dengan keterbatasan sarana seperti SMA Negeri 1 Waigete. Penelitian ini bertujuan menganalisis implementasi profesionalisme guru dalam meningkatkan kualitas pembelajaran melalui kompetensi, keteladanan, dan kepemimpinan humanis. Menggunakan pendekatan kualitatif deskriptif, tahapan penelitian yang dilaksanakan pada Januari 2026 ini meliputi wawancara mendalam, observasi, dan dokumentasi terhadap kepala sekolah serta guru yang dipilih melalui purposive sampling. Temuan penelitian menunjukkan bahwa profesionalisme tercermin dari keterlibatan guru dalam pengembangan sekolah serta pengelolaan kecerdasan emosional dan sosial. Penggunaan metode ceramah, diskusi kelompok kecil, serta praktikum terbukti meningkatkan partisipasi aktif dan disiplin siswa. Meskipun menghadapi kendala berupa rendahnya motivasi belajar dan keberagaman karakter peserta didik, guru menerapkan strategi adaptif melalui pendekatan personal dan dialog individual. Simpulan utama menegaskan bahwa sinergi antara kompetensi pedagogik, kematangan emosi, dan dukungan kepemimpinan suportif merupakan faktor penentu mutu pendidikan. Profesionalisme guru yang humanis terbukti mampu menciptakan ekosistem belajar kondusif sekaligus menjadi fondasi utama dalam pembentukan karakter serta kesuksesan akademik siswa di tengah berbagai keterbatasan sumber daya secara komprehensif, merata dan juga berkelanjutan.
STUDI KUALITATIF TENTANG IMPLEMENTASI PROFESIONALISME GURU DALAM PELAKSANAAN PEMBELAJARAN DI SEKOLAH MENENGAH Setiawati, Ayuni; Nisa, Kartini Rahman
SECONDARY: Jurnal Inovasi Pendidikan Menengah Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/secondary.v6i2.9456

Abstract

Improvements in the quality of human resources are greatly influenced by the quality of education, in which teachers play an important role indetermining the effectiveness of the learning process. Although teacher competency standards have been established through Law No. 14 of 2005, studies that describe the implementation of teacher professionalism based on direct experience in schools are still limited. Therefore, this study aims to describe and understand teacher professionalism based on teachers' experiences and perspectives in carrying out their duties at school. This study uses a qualitative approach with semi-structured interview techniques and documentation of teachers as research subjects. The results of the study show that teachers have implemented pedagogical, professional, social, and personal competencies in an integrated manner in their teaching practices. The integration of these four competencies supports the creation of effective, meaningful learning that is oriented towards developing the potential and character of students. It is concluded that teacher professionalism is reflected through the comprehensive application of the four competencies in the performance of their duties, thereby contributing to improving the quality of learning.
Co-Authors Buluk, Susana Coa, Sri Astuti Rahman Farizi, Zakaria Al hikmatiar, hamzarudin Ismiralda, Ismiralda Jayadin Kristina Tresia Leto Leto, Kristina Teresia Mahmud, Chusnul Mar’iyah Malmar, Mutia Mujiburohman, Muhammad Nurhadyati, Nurhadyati Rahman, Safitri Rezeki, Sri Minarni Ridwan, Mastura Setiawati, Ayuni Siti Zuraidah Windasari Windasari, Windasari Yuliati, Fransiska