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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Pendidikan Indonesia Journal of Educational Science and Technology DINTEK Journal of Education Technology Journal of Creative Power and Ambition (JCPA)
Sudarto M. Abukasim
Universitas Muhammaidyah Maluku Utara
Computer Science & IT Economics, Econometrics & Finance Education Engineering Mathematics

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PRANCANGAN PABRIK CINNAMIC ALDEHYDE DARI ASETALDEHIDA DAN BENZALDEHIDA DENGAN KAPASITAS 30.000 TON PER TAHUN Abukasim, Sudarto M
DINTEK Vol 11 No 2 (2018): Jurnal Dintek Vol 11 No. 2 September 2018
Publisher : Fakultas Teknik UMMU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.744 KB)

Abstract

ABSTRAK  Untuk memenuhi berbagai kebutuhan di dalam negeri, perlu adanya prarancangan suatu pabrik. Salah satunya cinnamic aldehyde yang dibuat dengan mereaksikan asetaldehida dan benzaldehida. Cinnamic aldehyde (C9H8O) merupakan cairan yang berwarna kuning dengan bau yang tajam digunakan secara khusus untuk pembuatan minyak wangi, yang dikomersilkan di Prancis tahun 1937. Cinnamic aldehyde juga digunakan sebagai penambah aroma dalam pembuatan permen, sabun serta obat-obatan.  Prarancangan pabrik cinnamic aldehyde dari asetaldehida dan benzaldehida dengan kapasitas 30.000 ton per tahun yang direncanakan didirikan tahun 2015 untuk menunjang kebutuhan dalam negeri berdasarkan data impor BPS dari tahun 2001-2005. Dengan mengetahui proses reaksi dan karakter bahan baku (sifat fisik dan kimia) maka dapat dihitung neraca massa dan panas hasil reaksi yang ditunjang dengan alat utama yaitu mixer, reaktor, netralizer, filter, decanter, dan menara distilasi. Berdasarkan tinjauan katalis yang digunakan yang tidak dapat menyebabkan korosi, maka pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde tergolong sebagai pabrik beresiko rendah. Perhitungan evaluasi ekonomi menunjukkan: 1) Keuntungan sebelum pajak Rp 142.983.917.990,30 per tahun dan keuntungan setelah pajak Rp 71.491.958.995,15 per tahun, 2) ROI (Return On Investment) sebelum pajak 54,42% ROI sesudah pajak 27,21 % dan ROI sebelum pajak untuk pabrik berisiko rendah minimal  44% untuk pabrik yang beresiko tinggi, 3) POT (Pay Out Investment) sebelum pajak 1,55 Tahun, POT sesudah pajak 2,68 Tahun dan POT sebelum pajak untuk pabrik berisiko tinggi maksimal 2 tahun, 4) BEP (Break Event Point) adalah 52,745 % dan SDP (Shut Down Point) adalah 37,011 %. BEP untuk pabrik kimia pada umumnya berkisar antara 40 – 60 %, dan 5) DCF (Discounted Cash Flow) diperoleh dari trial sebesar 25,103%. Dari data hasil perhitungan analisis ekonomi di atas dapat disimpulkan bahwa Pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde kapasitas produksi 30.000 ton/tahun ini layak didirikan.
PRANCANGAN PABRIK CINNAMIC ALDEHYDE DARI ASETALDEHIDA DAN BENZALDEHIDA DENGAN KAPASITAS 30.000 TON PER TAHUN Abukasim, Sudarto M
DINTEK Vol 11 No 2 (2018): Jurnal Dintek Vol 11 No. 2 September 2018
Publisher : Fakultas Teknik UMMU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.744 KB)

Abstract

ABSTRAK  Untuk memenuhi berbagai kebutuhan di dalam negeri, perlu adanya prarancangan suatu pabrik. Salah satunya cinnamic aldehyde yang dibuat dengan mereaksikan asetaldehida dan benzaldehida. Cinnamic aldehyde (C9H8O) merupakan cairan yang berwarna kuning dengan bau yang tajam digunakan secara khusus untuk pembuatan minyak wangi, yang dikomersilkan di Prancis tahun 1937. Cinnamic aldehyde juga digunakan sebagai penambah aroma dalam pembuatan permen, sabun serta obat-obatan.  Prarancangan pabrik cinnamic aldehyde dari asetaldehida dan benzaldehida dengan kapasitas 30.000 ton per tahun yang direncanakan didirikan tahun 2015 untuk menunjang kebutuhan dalam negeri berdasarkan data impor BPS dari tahun 2001-2005. Dengan mengetahui proses reaksi dan karakter bahan baku (sifat fisik dan kimia) maka dapat dihitung neraca massa dan panas hasil reaksi yang ditunjang dengan alat utama yaitu mixer, reaktor, netralizer, filter, decanter, dan menara distilasi. Berdasarkan tinjauan katalis yang digunakan yang tidak dapat menyebabkan korosi, maka pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde tergolong sebagai pabrik beresiko rendah. Perhitungan evaluasi ekonomi menunjukkan: 1) Keuntungan sebelum pajak Rp 142.983.917.990,30 per tahun dan keuntungan setelah pajak Rp 71.491.958.995,15 per tahun, 2) ROI (Return On Investment) sebelum pajak 54,42% ROI sesudah pajak 27,21 % dan ROI sebelum pajak untuk pabrik berisiko rendah minimal  44% untuk pabrik yang beresiko tinggi, 3) POT (Pay Out Investment) sebelum pajak 1,55 Tahun, POT sesudah pajak 2,68 Tahun dan POT sebelum pajak untuk pabrik berisiko tinggi maksimal 2 tahun, 4) BEP (Break Event Point) adalah 52,745 % dan SDP (Shut Down Point) adalah 37,011 %. BEP untuk pabrik kimia pada umumnya berkisar antara 40 ? 60 %, dan 5) DCF (Discounted Cash Flow) diperoleh dari trial sebesar 25,103%. Dari data hasil perhitungan analisis ekonomi di atas dapat disimpulkan bahwa Pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde kapasitas produksi 30.000 ton/tahun ini layak didirikan.
Beyond Intelligence: The Power of Grit in Achieving Cognitive Excellence Achievement in Chemistry for Sustainable Education Abukasim, Sudarto M.; Annisa, Desfi; Sutrisno, Hari; Rohaeti, Eli; Dahlan, Jafar
Jurnal Pendidikan Matematika dan Sains Vol. 13 No. Special_issue (2025): Integrasi Pendidikan Matematika dan Sains dalam Mendukung Sustaina
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v13iSpecial_issue.86217

Abstract

Academic achievement is often associated with cognitive ability; however, non-cognitive skills, such as grit, also play an important role in determining learning outcomes. Chemistry is a challenging subject because of the many abstract concepts that require perseverance and dedication to comprehend. This study aimed to examine the relationship between grit and students' cognitive achievement in chemistry learning at the secondary school level, as well as to evaluate the extent to which grit affects learning success. The method used was quantitative, with a survey approach of 200 students in class X in Pekanbaru, Indonesia. The research instruments consisted of a talent questionnaire and a multiple-choice test to measure cognitive chemistry achievement. The data were analyzed using the Pearson product-moment correlation technique after performing prerequisite tests, including normality and homogeneity tests. The results of the analysis showed a significant positive correlation between grit and cognitive achievement (p = 0.001 < 0.05), with a correlation coefficient of 0.234, which is classified as low. These findings indicate that students with higher grit levels tend to have better cognitive performance in chemistry learning, although other factors also play roles. In addition, this study is in line with the Sustainable Development Goal concerning Quality Education, particularly through its focus on the role of non-cognitive skills in learning.
Interaksi Interaksi Iklim Sekolah, Inovasi Guru, dan Ketekunan Akademik dalam Meningkatkan Prestasi Kimia: Pendekatan Pemodelan Persamaan Struktural Abukasim, Sudarto; Sutrisno, Hari; Rohaeti, Eli
Jurnal Pendidikan Indonesia Vol 14 No 2 (2025): June
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpi-undiksha.v14i2.87574

Abstract

This study was motivated by the low level of student's understanding of complex chemical concepts, which is the main challenge in learning chemistry at the high school level. The primary objective of this study was to investigate the impact of academic persistence, teacher innovation, and school climate on the cognitive achievement of high school students in chemistry learning. This study employed a non-experimental, quantitative approach using Structural Equation Modeling (SEM). The study subjects consisted of 1,057 high school students in North Maluku Province. Data were collected through a questionnaire that included 26 items for cognitive achievement, 10 items for academic persistence, and instruments to measure teacher innovation and school climate. Data analysis was conducted using structural equation modeling (SEM) to examine the relationship between variables. The results showed that academic persistence had a significant effect on students' cognitive achievement (P-value = 0.659). Teacher innovation also had a significant positive effect (P-value = 0.634), while school climate did not show a significant effect. Academic persistence has been proven to be the primary predictor of students' commitment and resilience in facing learning challenges. This finding also highlights the importance of teacher innovation, particularly in the application of technology-based and interactive learning methods, in enhancing student learning outcomes. The implications of this study underscore the need for strategies that enhance chemistry learning, focusing on strengthening student character and promoting pedagogical innovation. Further research is recommended to refine the model by incorporating additional variables to enhance chemistry learning in schools.
Modeling the Effects of School Resources and School Climate on Students’ Cognitive Achievement in Chemistry Sudarto M Abukasim; Faujia Umasugi; Jadaf Dahlan
Journal of Educational Science and Technology (EST) Volume 12 Number 1 April 2026
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/est.v12i1.84917

Abstract

This study examined the relationships among school resources, school climate, and students’ cognitive achievement in chemistry using a Structural Equation Modeling (SEM) approach. The study employed a quantitative survey design involving senior high school students from several districts/cities in North Maluku Province, Indonesia. Data were collected through questionnaires measuring school resources and school climate, as well as a chemistry cognitive achievement test. Instrument validity and reliability were evaluated using Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), Composite Reliability (CR), Average Variance Extracted (AVE), and Cronbach’s Alpha.The findings revealed that school climate had a positive and significant effect on students’ cognitive achievement in chemistry, whereas school resources did not demonstrate a significant direct effect on cognitive achievement. In addition, school resources were positively correlated with school climate. The SEM model demonstrated acceptable goodness-of-fit, indicating that the proposed structural model adequately represented the relationships among the variables. These findings suggest that supportive academic and physical school environments play a more important role in improving students’ chemistry achievement than the mere availability of institutional resources. The study highlights the importance of strengthening school climate to support students’ cognitive development and academic performance in chemistry education.
Regulatory Gaps and Protection Failures: A Socio-Legal Study of Fraud Cases Involving Indonesian Migrant Workers Sudarto M. Abukasim; Sutarsa Sutarsa; Dwi Slamet Raharjo; Akbar Nur Salim; Wasino Wasino; Mustafa Mustafa
Journal of Creative Power and Ambition (JCPA) Vol. 4 No. 01 (2026): Journal of Creative Power and Ambition (JCPA)
Publisher : CV Edujavare Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70610/jcpa.1264

Abstract

International labor migration has become one of the most significant global phenomena in the era of modern globalization. This study aims to analyze the regulatory gap and weak legal protection for Indonesian migrant workers (PMI) in cases of fraud and exploitation of migrant workers. The research uses a socio-legal approach, employing normative analysis of laws and regulations, as well as empirical studies based on court decisions, BP2MI reports, online media, and investigative documents from PMI cases for the 2020–2025 period. Thematic analysis was used to identify patterns of fraud, institutional weaknesses, and socio-legal factors that affect the effectiveness of migrant worker protections. The results of the study show that although Indonesia already has a legal framework through Law Number 18 of 2017 concerning the Protection of Indonesian Migrant Workers, the practice of illegal recruitment and exploitation is still taking place systematically. Forms of fraud include document forgery, use of non-procedural visas, fake employment contracts, wage deductions, passport confiscation, and digital fraud through social media. The study found gaps between formal regulation and implementation, particularly in recruitment supervision, administrative verification, inter-agency coordination, and victim recovery mechanisms. In addition, poverty, low education, lack of legal literacy, and limited employment also increase the vulnerability of migrant workers. Therefore, reform of migrant worker protection is needed by strengthening supervision, institutional reform, digitizing the migration system, and international cooperation.
The Effects of Quantum Learning and Self-Efficacy on High-School Students’ Mathematical Representation Skills Jafar Dahlan; Safri Tinamba; La Yusran La Kalamu; Sudarto M. Abukasim
Journal of Education Technology Vol. 9 No. 4 (2025): November
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jet.v9i4.104355

Abstract

Mathematical representation ability is an essential skill that enables students to connect mathematical concepts with real-life contexts. However, many senior high school students still experience difficulties in representing mathematical ideas, particularly in modeling word problems, which is influenced by inappropriate instructional models and low levels of self-efficacy. This study aims to examine differences in students’ mathematical representation abilities between those taught using the Quantum Learning model and those taught through direct instruction, as well as to analyze the interaction between instructional models and self-efficacy on mathematical representation ability. This study employed a quantitative approach using a quasi-experimental 2×2 factorial design. The participants consisted of 101 eleventh-grade students selected through multistage random sampling. Data were collected using a mathematical representation ability test and a self-efficacy questionnaire, and were analyzed using descriptive statistics, prerequisite tests (normality and homogeneity), and two-way analysis of variance (2×2 ANOVA) followed by Tukey’s post hoc test. The results indicate that the Quantum Learning model is significantly more effective than direct instruction in improving students’ mathematical representation abilities. Furthermore, a significant interaction was found between the instructional model and students’ self-efficacy. Students with high self-efficacy demonstrated better mathematical representation abilities when taught using Quantum Learning, whereas students with low self-efficacy benefited more from direct instruction. This study concludes that the effectiveness of mathematics instructional models is strongly influenced by students’ affective characteristics, particularly self-efficacy, highlighting the importance of adaptive teaching strategies to optimize students’ mathematical representation abilities.
PRANCANGAN PABRIK CINNAMIC ALDEHYDE DARI ASETALDEHIDA DAN BENZALDEHIDA DENGAN KAPASITAS 30.000 TON PER TAHUN: Sudarto M.Abukasim Program Studi Matematika Fakultas matematika Ilmu Pengetahuan Alam Universitas Muhammadiyah Maluku Utara Sudarto M Abukasim
DINTEK Vol. 11 No. 2 (2018): Jurnal Dintek Vol 11 No. 2 September 2018
Publisher : Fakultas Teknik UMMU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.744 KB)

Abstract

ABSTRAK Untuk memenuhi berbagai kebutuhan di dalam negeri, perlu adanya prarancangan suatu pabrik. Salah satunya cinnamic aldehyde yang dibuat dengan mereaksikan asetaldehida dan benzaldehida. Cinnamic aldehyde (C9H8O) merupakan cairan yang berwarna kuning dengan bau yang tajam digunakan secara khusus untuk pembuatan minyak wangi, yang dikomersilkan di Prancis tahun 1937. Cinnamic aldehyde juga digunakan sebagai penambah aroma dalam pembuatan permen, sabun serta obat-obatan. Prarancangan pabrik cinnamic aldehyde dari asetaldehida dan benzaldehida dengan kapasitas 30.000 ton per tahun yang direncanakan didirikan tahun 2015 untuk menunjang kebutuhan dalam negeri berdasarkan data impor BPS dari tahun 2001-2005. Dengan mengetahui proses reaksi dan karakter bahan baku (sifat fisik dan kimia) maka dapat dihitung neraca massa dan panas hasil reaksi yang ditunjang dengan alat utama yaitu mixer, reaktor, netralizer, filter, decanter, dan menara distilasi. Berdasarkan tinjauan katalis yang digunakan yang tidak dapat menyebabkan korosi, maka pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde tergolong sebagai pabrik beresiko rendah. Perhitungan evaluasi ekonomi menunjukkan: 1) Keuntungan sebelum pajak Rp 142.983.917.990,30 per tahun dan keuntungan setelah pajak Rp 71.491.958.995,15 per tahun, 2) ROI (Return On Investment) sebelum pajak 54,42% ROI sesudah pajak 27,21 % dan ROI sebelum pajak untuk pabrik berisiko rendah minimal 44% untuk pabrik yang beresiko tinggi, 3) POT (Pay Out Investment) sebelum pajak 1,55 Tahun, POT sesudah pajak 2,68 Tahun dan POT sebelum pajak untuk pabrik berisiko tinggi maksimal 2 tahun, 4) BEP (Break Event Point) adalah 52,745 % dan SDP (Shut Down Point) adalah 37,011 %. BEP untuk pabrik kimia pada umumnya berkisar antara 40 – 60 %, dan 5) DCF (Discounted Cash Flow) diperoleh dari trial sebesar 25,103%. Dari data hasil perhitungan analisis ekonomi di atas dapat disimpulkan bahwa Pabrik Cinnamic Aldehyde dari Acetaldehyde dan Benzaldehyde kapasitas produksi 30.000 ton/tahun ini layak didirikan.
Co-Authors Akbar Nur Salim Dahlan, Jafar Desfi Annisa, Desfi Dwi Slamet Raharjo Eli Rohaeti Faujia Umasugi Hari Sutrisno Jadaf Dahlan La Yusran La Kalamu Mustafa Mustafa Safri Tinamba Sutarsa Sutarsa Wasino Wasino