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All Journal Jurnal Pendidikan Dasar Nusantara Jurnal Teknik Kimia Jurnal Ecogen Gotong Royong : Jurnal Pengabdian, Pemberdayaan Dan Penyuluhan Kepada Masyarakat (J-P3KM)
Ramadhani, Aldi
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Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Social Sciences Other

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REVIEW: PENJERNIHAN MINYAK GORENG BEKAS MENGGUNAKAN BERBAGAI JENIS ADSORBEN ALAMI Waluyo, Untung; Ramadhani, Aldi; Suryadinata, Alvina; Cundari, Lia
Jurnal Teknik Kimia Vol 26 No 2 (2020): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v26i2.588

Abstract

 Abstrak Minyak goreng yang digunakan secara berulang pada temperatur tinggi akan menyebabkan penurunan mutu dan nilai gizi pada makanan yang digoreng. Penggunakan minyak secara berulang juga akan berdampak buruk bagi kesehatan. Perbaikan kualitas minyak goreng dapat dilakukan dengan berbagai cara sehingga minyak dapat digunakan kembali secara aman. Perbaikan kualitas dapat dilakukan dengan cara pemurnian dengan menggunakan sejumlah adsorben. Pemurnian minyak goreng bekas secara adsorpsi menggunakan berbagai adsorben dengan berbagai variasi suhu dan waktu kontak telah dipelajari. Proses adsorpsi dilakukan pada minyak goreng bekas yang dikontakkan dengan sejumlah adsorben. Mahalnya harga adsorben kimia membuat para peneliti mengembangkan adsorben alami yang berasal dari limbah pertanian. Terdapat beberapa limbah pertanian yang memiliki potensi sebagai adsorben. Limbah pertanian yang dapat digunakan sebagai adsorben dalam adsorpsi minyak goreng bekas yaitu seperti karbon aktif dari tempurung kelapa, karbon aktif dari tandan kosong kelapa sawit, karbon aktif dari kulit sukun, bentonit, mengkudu, arang aktif dari kulit pisang kepok, arang aktif dari biji kelor, arang aktif biji salak, arang aktif dari ampas tebu, adsorben dari pati aren, dan biji alpukat. Kapasitas adsorpsi dari beberapa jenis adsorben berbeda-beda bergantung pada struktur, konsentrasi adsorbat, jumlah adsorben, tingkat keasaman, kondisi operasi, dan waktu kontak.
Pelatihan HERO (Hope, Efficacy, Resilience, Optimism) Sebagai Modal Psikososial Remaja Di Desa Melati Ii Dusun Randu Pisang Kec. Perbaungan, Kab. Serdang Bedagai Khairuddin, Khairuddin; Lubis, Doli Maulana Gama Samudra; Apriliya, Indah; Ramadhani, Aldi; Arafah, Nur
Gotong Royong : Jurnal Pengabdian, Pemberdayaan Dan Penyuluhan Kepada Masyarakat Vol. 3 No. 1 (2023): Gotong Royong (JP3KM) Desember 2023
Publisher : Mata Pena Madani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51849/jp3km.v3i1.35

Abstract

Penelitian ini bertujuan untuk meningkatkan kesejahteraan psikologis remaja yang tinggal di Desa Melati II Dusun Randu Pisang melalui pelatihan modal psikologis. Aspek modal psikologis yang diberikan pada pelatihan ini yaitu, hope, self-efficacy, resilience dan optimism (HERO). Materi disampaikan menggunakan konsep experiential learning dengan metode lecturing, audio-visual, tugas tertulis, dikusi, permainan, dan refleksi. Partisipan penelitian yaitu 20 remaja (16 – 19 tahun). Desain yang dipilih adalah one-group pretest-posttest design. Berdasarkan hasil analisis data menggunakan uji Wilcoxon diperoleh nilai Z = -3,610b dengan p = 0,000. Karena p 0,000 < 0,05 maka H1 diterima. Hal ini berarti ada peningkatan modal psikosial remaja melalui Pelatihan HERO (Hope, Efficacy, Resilience, Optimism) dari hasil analisis menggunakan data sebelum (pretest) dan sesudah (posttest).
The Influence of the Problem Based Learning Model Assisted by Booklet Media on the Understanding Conceptual Ability of Class V Elementary School Students on Water Cycle Material Murdani, Eka; Sumarli, Sumarli; Ramadhani, Aldi
JURNAL PENDIDIKAN DASAR NUSANTARA Vol 10 No 1 (2024): Jurnal Pendidikan Dasar Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jpdn.v10i1.22901

Abstract

This research aims to determine the effect of the problem based learning model assisted by booklet media on the understanding conceptual ability of fifth grade elementary school students in the water cycle material at SDN 03 Dungun Laut, Jawai District for the 2023/2024 academic year. The type of research used was quantitative research using a quasi experimental design method with a post-test only control group design. The population of this study was all class V students at SDN 03 Dungun Laut, totaling 40 students. The sample for this research was class V with a total of 40 students consisting of class VA with 18 students as the experimental class and class VB with 22 students as the control class. The collection techniques used in this research were test and non-test techniques. The tests used were post-test questions, while non-tests used student response questionnaires, and observation sheets on the implementation of learning activities. The data analysis techniques in this research were the two independent sample t-test, effect size test, and descriptive percentage analysis. The results of the research showed that: (1) There was a difference in students' conceptual understanding between classes that use the problem based learning model assisted by booklet media and classes that are given a direct learning model on water cycle material in class V SDN 03 Dungun Laut with tcount = 2.462 > ttable = 2.024; (2) The influence of the problem based learning model assisted by booklet media on students' science understanding conceptual ability was 0.4 with medium criteria; (3) The implementation of the problem based learning model assisted by booklet media in science learning for class V elementary school was classified as very good with a percentage of 90%; (4) Students response were positive to the problem based learning model assisted by booklet media in science lessons for class V elementary school was 81% with very good criteria. So it could be concluded that the problem based learning model assisted by booklet media had an influence on students' understanding conceptual ability of Natural Science (IPA) in class V water cycle material at SDN 03 Dungun Laut.
Examining the Impact of Two Leadership Patterns on Creativity via Psychological Empowerment in Indonesian Service and Banking Sectors Ramadhani, Aldi; Pradana, Handrio Adhi
Jurnal Ecogen Vol 7, No 3 (2024): Jurnal Ecogen
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jmpe.v7i3.15803

Abstract

With the lens of sensemaking theory, this research aims to examine the effect of transformational and transactional leadership on employee creativity with psychological empowerment acting as a mediator. This research used quantitative methods with primary data sources. Data was collected by designing in such a way and distributing questionnaires via online. The sample size in this research was 157 respondents who work in various industries such as services, manufacturing, educational institutions, and banking. The data analysis used multiple linear regression and mediating testing procedure by Preacher and Hayes. The results showed that transformational leadership, transactional leadership, and psychological empowerment had a significant positive effect on creativity. Transformational and transactional leadership have a significant positive effect on psychological empowerment. Psychological empowerment succeeded in being mediator for the two different leadership styles in nature, that are transformational and transactional leadership, influencing on creativity. This research contributes to the development of literature on two types of leadership at once, namely transformational and transactional. So far, transactional leaders are considered to have a negative effect on outcome variables. However, this research is able to reveal the same capability between transformational and transactional in improving employee performance particularly in emerging country context.
Co-Authors Apriliya, Indah Eka Murdani, Eka Handrio Adhi Pradana Khairuddin - Lubis, Doli Maulana Gama Samudra Nur Arafah Sumarli Sumarli, Sumarli Suryadinata, Alvina Waluyo, Untung Yundari, Yundari