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Electrochemical Investigation of Ethylene Glycol as Corrosion Inhibitor of Al 5052 Habibi; Nikitasari, Arini; Saifudin; Kusumastuti; Musabikha; Prifiharni; Irawan; Priyotomo; Riastuti
Jurnal Sains Materi Indonesia Vol. 26 No. 1 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.4398

Abstract

Nowadays, electric cars use Al 5052 in the cooling pad of the battery coolant system. Corrosion behavior study of Al 5052 by coolant is essential in the automotive industry. Ethylene glycol is the main compound of the battery coolant system that can inhibit the corrosion process of aluminum alloys. The corrosion inhibition performance of ethylene glycol (EG) for Al 5052 surface in 3.5% NaCl solution has been studied using electrochemical measurements such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in various concentrations of EG up to 50% and a temperature range from 30oC to 60oC. Based on results, EG can inhibit the corrosion process of Al 5052. The corrosion rate (CR) of coolant containing EG decreases with increasing that concentration in various temperatures, and the CR of the coolant rises with the increased temperatures. The inhibition efficiency of coolant boosts with the increase in EG concentration in each operational temperature and the highest up to 75% at 60oC with 50% of EG concentration.
PENGARUH KOMBINASI KAYU SENGON (Falcataria moluccana) DAN BAMBU PETUNG (Dendrocalamus asper) TERHADAP SIFAT FISIKA PAPAN LAMINASI Wulandari, Febriana Tri; Amin, Radjali; Habibi; Ety Lisma, Ni Putu
Jurnal Penelitian Hasil Hutan Vol. 42 No. 1 (2024): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jphh.2024.2368

Abstract

Sengon wood can be strengthened by mixing with bamboo in making laminated boards.  The aim is to determine whether the combination of sengon wood and petung bamboo produces an increase in strength class and to determine the effect of pressure and weight on the physical properties of laminated boards made from sengon wood and petung bamboo.  The test results of the characteristics of physical and mechanical properties of the combination of sengon wood and petung bamboo resulted in an increase in strength class to strength class III according to JAS SE-7 2003 and SNI 01-6240-2000 standards. The felt pressure of laminated boards has a significant effect on moisture content and thickness development, but density and thickness shrinkage have no significant effect on the felt pressure of laminated boards. Adhesive weight significantly affected the physical properties of the board; adhesive weight and felt pressure together had no significant effect on the physical properties of the board.
Kegagalan Sistem Keselamatan Transportasi Laut di Indonesia Habibi
JURNAL APLIKASI PELAYARAN DAN KEPELABUHANAN Vol 8 No 2 (2018): bulan Maret
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/japk.v8i2.46

Abstract

Sea transportation is the artery for an island nation. Indonesia, which has a large number of islands, needs adequate sea transportation facilities. Ironically, as a maritime country the Indonesian sea transportation system is in shambles. This is proven by the large number of accidents at sea. Marine ship crashes caused hundreds of lives of Indonesian people to float. The causes of accidents vary, ranging from fires, overloading to the age of the manipulated vessels. This condition is exacerbated by the weak level of supervision from policy makers. The government's mistake in its current national development policy is to prioritize land base oriented. So that strategies related to sea affairs do not get priority. As a result of the wrong strategy, the policies and implementation in the field of sea transportation are chaotic. As a consequence, sea transportation which should be the mainstay of the community actually becomes a frightening transport. The level of ship accidents is a consequence of lost control. Without warning, the shipping operator / operator determines a cautious attitude towards accidents at sea. Ship accidents at sea not only give consequences to casualties but also costs that must be borne to cover the trend of the ship's accident.
Pengaruh Penerapan Model Pembelajaran Discovery Learning Untuk Meningkatkan Hasil Belajar Fisika Siswa Kelas X Listriorini Lali Pora; Habibi; Baiq Azmi Sukroyanti
Journal Transformation of Mandalika, e-ISSN: 2745-5882, p-ISSN: 2962-2956 Vol. 4 No. 4 (2023): April
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jtm.v4i4.1268

Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar siswa yang di treatment dengan model pembelajaran Discovery Learning. Penelitian menggunakan quasi-eksperimen dengan sampel sebanyak 48 orang siswa kelas X IPA 1 SMAN 1 Batulayar. Data penelitian ini diambil dari hasil tes awal dan tes akhir siswa. Instrumen tes menggunakan soal tes pilihan ganda yang telah di uji validitas, reabilitas, daya pembeda dan indeks kesukarannya. Berdasarkan hasil analisis data diperoleh nilai rata-rata nilai tes awal kelas eksprimen sebesar 44,58 dan kelas kontrol 44,37 dengan kategori sudah homogen dan terdistribusi normal. Hasil tes akhir menunjukan rata-rata nilai kelas eksprimen sebesar 73,54 dan kelas kontrol 64,37. Data nilai tes akhir siswa kelas sampel dianalisis menggunakan uji-t. Berdasarkan hasil analisis data menggunakan uji-t diperoleh thitung sebesar 3,05 dan ttabel sebesar 2,02. Didapatkan thitung lebih besar dari ttabel pada taraf kesalahan 5%. Penelitian ini dapat disimpulkan bahwa pengaruh model Discovery Learning terbukti signifikan dalam meningkatkan hasil belajar siswa.
Secretome-Based Therapy Promotes Epidermal Thickness Recovery and Follicular Regrowth in Fluconazole-Induced Alopecia in Rats Ametati, Holy; Prawitasari, Salindri; Habibi
International Journal of Cell and Biomedical Science Vol 4 No 11 (2025)
Publisher : Stem Cell and Cancer Research (SCCR)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59278/cbs.v4i11.72

Abstract

Background: Alopecia involves hair loss characterized by decreased follicle density and epidermal thinning, which may be exacerbated by prolonged fluconazole exposure. The secretome derived from human umbilical cord mesenchymal stem cells (hUC-MSCs) possesses anti-inflammatory and regenerative properties that could aid follicular repair. Methods: Twenty-four male Wistar rats were randomly assigned to four groups: control, 5% minoxidil, hUC-MSC secretome, and secretome–minoxidil combination. Alopecia was induced by fluconazole administration for seven days, followed by a seven-day treatment period. Histological evaluation using hematoxylin and eosin staining assessed hair follicle count and epidermal thickness. Results: The hUC-MSC secretome group exhibited a significant increase in follicle count (mean 39.2; p < 0.001) compared with the control and minoxidil groups. However, changes in epidermal thickness were not statistically significant (p = 0.133). Conclusion: hUC-MSC secretome effectively enhances follicular regeneration in fluconazole-induced alopecia and represents a promising biotherapeutic approach for hair restoration.
Penerapan Media Wordwall untuk Meningkatkan Hasil Belajar Peserta Didik pada Mata Pelajaran IPAS Kelas V di SDN 26 Ampenan. Munirah, Munirah; Makki, Muhammad; Habibi
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 6 No. 3 (2025): Agustus
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v6i3.902

Abstract

The problem underlying this research is the low learning outcomes of fifth-grade students in the IPAS subject at SDN 26 Ampenan. This study aims to describe the implementation of Wordwall-based media to improve students’ learning outcomes. The approach used is qualitative with a Classroom Action Research (CAR) design consisting of two cycles, where each cycle includes two meetings with four stages: planning, implementation, observation, and reflection. The focus of this research is on the application of Wordwall-based media and students’ learning outcomes. The research subjects were the teacher and 14 fifth-grade students of SDN 26 Ampenan. Data were collected using observation sheets, tests, and documentation, and analyzed qualitatively. The results of the study showed an improvement in both teacher and student activities, as well as in students’ learning outcomes. The learning process became more engaging and interactive through the integration of Wordwall media, which provided opportunities for students to actively participate and better understand the material. It can be concluded that the implementation of Wordwall-based learning media effectively improved students’ learning outcomes in the IPAS subject for fifth-grade students at SDN 26 Ampenan.
SYSTEMATIC LITERATURE REVIEW: THE EFFECT OF DZIKIR ON THE MENTAL HEALTH OF NURSES : TINJAUAN PUSTAKA SISTEMATIS: PENGARUH DZIKIR TERHADAP KESEHATAN MENTAL PERAWAT Radha, Andi; Mallapiang, Fatmawaty; Habibi
Homes Journal = Hospital Management Studies Journal Vol 6 No 3 (2025): HOMES JOURNAL: NOVEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/hmsj.v6i3.60975

Abstract

Background: Mental health of nurses become issue crucial in the middle height pressure work in critical units like room emergency emergency department (ER) and intensive care unit (ICU). Method : Research This use method Systematic Literature Review (SLR) with through two processes , namely the review process and the identification process journal with systematic use Preferred Reporting Items for Systematic Reviews and MetaAnalyses (PRISMA) guide Result: Based on search journal relevant articles​ with mental health in nurses obtained 149 journals sourced articles​ from publications in Science Direct, PubMed, and Google Scholar which were then filtered Then after screening with notice title , keywords , and access journal article the obtained 35 journals articles and produce 5 relevant articles​ with topic study . Conclusion: Results Practice dhikr as therapy relaxation psychospiritual proven effective in reduce level anxiety and stress in nurses . Home hospitals and institutions health recommended develop training programs therapy dhikr in a way professional as part from the improvement strategy mental health of nurses in a way sustainable
The Effectiveness of Environmental Law within Regional Development Policies in Disaster-Prone Areas of Sumatra Chandra, Febrian; Harmaini; Bahri, Rizki Apriadi; Habibi; Halomoan, Muhammad Reza; Qalbi, Rabbiq
Adagium: Jurnal Ilmiah Hukum Vol 4 No 1 (2026): Adagium: Jurnal Ilmiah Hukum
Publisher : PT. Meja Ilmiah Publikasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70308/adagium.v4i1.335

Abstract

This study aims to analyze the effectiveness of environmental law within the framework of regional development policies in Sumatra Island, specifically in mitigating ecological disaster risks. Sumatra faces a dual challenge of accelerated infrastructure development and high vulnerability to disasters. The research method employed is juridical-normative with a statutory and case study approach, supported by a systematic literature review of secondary data regarding spatial planning and disaster mitigation policies. The results indicate that although legal instruments such as Environmental Impact Assessment (AMDAL) and Strategic Environmental Assessment (KLHS) are regulated, their implementation is often neglected for short-term investment interests, especially after the enactment of the Job Creation Law. There is a significant gap between national green-oriented planning and the reality of regional planning (RTRW/RPJMD) in Sumatra, where planning documents have not fully adopted low-carbon development principles. The impact of this research recommends the need for harmonization of central and regional regulations and strengthening of administrative law enforcement based on political ecology to ensure sustainable and disaster-resilient development.
Comparative Study of Curriculum Management Models Between Islamic Educational Institutions and General Educational Institutions Yulia, Fitri; Arizal, Jepri; Habibi; Wijaya, Candra; Hidayat, Rahmat; Azad, Inamul
Al-Tadzkiyyah: Jurnal Pendidikan Islam Vol 16 No 2 (2025): Al-Tadzkiyyah: Jurnal Pendidikan Islam
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/atjpi.v16i2.29660

Abstract

This study aims to analyze the comparative curriculum management models between Islamic educational institutions and public educational institutions within the context of the national education system in Indonesia. The main focus of this study is to identify the similarities, differences, strengths, and weaknesses of the two curriculum management models. The research method used is a descriptive qualitative approach with literature review and observation of curriculum management practices in madrasas and public schools. The results show that both madrasas and public schools have curriculum management structures that follow national standards, but madrasas integrate Islamic religious values ​​into all aspects of learning. Madrasas tend to emphasize the spiritual, moral, and character dimensions of Islam through a curriculum based on the integration of religious and general knowledge. Meanwhile, public schools focus more on mastering academic competencies and practical skills as stipulated in the independent curriculum policy. The strength of madrasah curriculum management lies in the development of strong morals and religious values, while its weakness is limited innovation in the application of technology and contextual learning. In contrast, public schools excel in implementing adaptive learning models and digitalization, but face challenges in strengthening students' spiritual character. This study confirms that synergy between curriculum management models in madrasas and public schools can be an ideal solution for creating a holistic curriculum, balancing religious values ​​and academic competencies. Therefore, the results of this study are expected to serve as a reference for policymakers, educators, and curriculum developers in optimizing curriculum management that is relevant to the needs of the 21st century.
Analisis Kebutuhan Mahasiswa dalam Mendukung Efektivitas Pembelajaran Logika Dasar Lestari, Reza; Habibi
JURNAL ILMU PENDIDIKAN Vol. 5 No. 1 (2026): JANUARI-JUNI
Publisher : Gayaku Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58222/jurip.v5i1.1794

Abstract

Mata kuliah Logika Dasar memiliki peran penting dalam membentuk kemampuan berpikir rasional, sistematis, dan kritis mahasiswa. Namun, karakteristik materi yang bersifat abstrak sering menimbulkan kesulitan belajar apabila pembelajaran tidak dirancang sesuai dengan kebutuhan mahasiswa. Oleh karena itu, artikel ini bertujuan untuk menganalisis kebutuhan mahasiswa dalam mendukung efektivitas pembelajaran Logika Dasar. Metode yang digunakan adalah kajian konseptual melalui studi kepustakaan terhadap buku teks dan artikel jurnal yang relevan dengan pembelajaran logika, analisis kebutuhan, dan efektivitas pembelajaran di perguruan tinggi. Hasil kajian menunjukkan bahwa mahasiswa membutuhkan pembelajaran Logika Dasar yang menekankan pemahaman konseptual, penyajian materi yang sistematis dan kontekstual, strategi pembelajaran yang interaktif, penggunaan media pembelajaran yang mampu memvisualisasikan konsep abstrak, serta evaluasi pembelajaran yang berorientasi pada proses berpikir dan penalaran logis disertai umpan balik konstruktif. Analisis kebutuhan mahasiswa memberikan landasan yang kuat dalam perancangan pembelajaran Logika Dasar yang lebih adaptif dan berorientasi pada mahasiswa. Dengan demikian, analisis kebutuhan mahasiswa perlu dijadikan bagian integral dalam pengembangan pembelajaran Logika Dasar di perguruan tinggi guna meningkatkan efektivitas pembelajaran.