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All Journal Jurnal Kesehatan Tambusai Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) International Journal of Applied Mathematics, Sciences, and Technology for National Defense AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika
Atmadi
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Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Dentistry Health Professions Mathematics Medicine & Pharmacology Nursing Physics Public Health

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Socialization of CBRN-E Threat and Its Anticipation Toward Students of a Particular Senior High School in Bogor Area Stiawan, Elva; Sari, Dini Rusfita; Gita, Mutiara; Atmadi
Jurnal Kesehatan Tambusai Vol. 5 No. 3 (2024): SEPTEMBER 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jkt.v5i3.33269

Abstract

Kesadaran bela negara sudah sepatutnya disadari secara luas dan khususnya diterapkan oleh generasi muda Indonesia saat ini. Gagasan tersebut hendaknya disampaikan secara strategis kepada siswa-siswa SMA untuk mempersiapkan sumber daya manusia berkualitas yang mendukung pertahanan negara, khususnya dalam mengantisipasi ancaman Bahan Kimia, Biologi, Radiologi, Nuklir, dan Bahan Peledak (CBRN-E). Namun informasi mengenai pemahaman CBRN-E pada tingkat siswa SMA di Indonesia masih terbatas. Pengabdian masyarakat ini bertujuan untuk memberikan profil khusus pemahaman siswa SMA setempat terhadap ancaman CBRN-E sebagai wawasan program selanjutnya dalam mengantisipasi ancaman CBRN-E. Selain melakukan sosialisasi kepada siswa SMA di salah satu SMA tertentu di Kabupaten Bogor, kami menganalisis secara singkat pemahaman awal mereka terhadap isu-isu terkait pertahanan dan topik terkait kimia melalui pre-test kuesioner yang dirancang. Hasil studi pendahuluan ini menunjukkan bahwa pengetahuan mereka tentang ancaman CBRN-E harus diperkuat. Menariknya, sebagian besar peserta mempunyai persepsi positif mengenai preferensi karir mereka untuk mendukung sektor pertahanan negara, misalnya minat mereka untuk berkontribusi di bidang kimia untuk memperkuat pertahanan negara. Temuan ini menyiratkan mendorong pemangku kepentingan pendidikan untuk berkolaborasi secara strategis dengan lembaga pertahanan negara untuk mengintegrasikan materi pembelajaran terkait CBRN-E ke dalam kurikulum yang ada.
EKSPLORASI ETNOMATEMATIKA DALAM AL-QUR’AN SEBAGAI SUMBER BELAJAR Atmadi; Nuryami
AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika Vol. 3 No. 1 (2024): Januari
Publisher : LPPM Institut Ahmad Dahlan Probolinggo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46773/aljabar.v3i1.918

Abstract

Mathematics is one of the subject areas taught from elementary school to high school and even to universities. Mathematics is also one of the subjects that is considered difficult by many students, but mathematics is very important in improving human thinking and this science also plays a very important role in everyday life. Through this ethnomathematics exploration, students will find it easier and more enjoyable to learn mathematics from the Qur’an. Mathematics has a close relationship with the Qur’an without us realizing it, such as odd numbers, even numbers, and prime numbers listed in surah Al-kahf verse 22, verse 25, Al-ankabut verse 14, Al-baqarah verse 261, and annisa’ verse 11-12. The purpose of this research is to describe and elaborate mathematics learning in number theory contained in the Qur’an. The method in this research is using qualitative method which is done by observation and literature study. From this research, it is known that there is a relationship between the words of God contained in the Qur’an and the concept of mathematics, and it is proven that always math lessons can solve all problems in Islam. This research is expected to facilitate the learning of mathematics and can show that there is a connection with the Qur’an. Thus later mathematics lessons are not only as ordinary subjects, but can also be seen in religion, so the researcher took the title Exploration of Ethnomathematics in the Qur’an as a learning resource.Keywords: exploration, ethnomathematics, Qur’an
EFEKTIVITAS PENGGUNAAN MEDIA PEMBELAJARAN PAPAN SISTEM PERSAMAAN LINEAR DUA VARIABEL TERHADAP PEMAHAMAN SISWA KELAS VIII Atmadi; Tuhfatul Janan
AL JABAR: Jurnal Pendidikan dan Pembelajaran Matematika Vol. 3 No. 2 (2024): Juli
Publisher : LPPM Institut Ahmad Dahlan Probolinggo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46773/aljabar.v3i2.957

Abstract

This study aims to determine the effectiveness of the use of learning media board system of linear equations of two variables (SPLDV) on the understanding of 8th grade students. This research was conducted in September 2023, the first week to the third week, located at MTs Miftahul Ulum. In this study, the data normality test was carried out using the shapiro-wilk method where the results showed that the pre-test significance was 0.207 and the post-test was 0.202, which means that the data is normally distributed. Then the normality gain test was conducted to determine the effectiveness of the SPLDV board as a learning media with an average N-gain score of 0.6724 and the average N-gain percent was 63.8823%. Keywords: learning media, spldv, math
Copolymerization of Tapioca Starch Waste through Grafting of Acrylic Acid Monomer with Cerium(IV) Initiator as Super Absorbent Polymer (SAP) Candidate Kurniadi, Tedi; Prasojo, Agus Eko; Putri, Riyanti; Nurwanto; Hartono, Rudi; Atmadi
Indonesian Journal of Chemical Studies Vol. 4 No. 2 (2025): Indones. J. Chem. Stud. December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ijcs.v4i2.81

Abstract

Indonesia, one of the world's largest tapioca starch producers, generates abundant cassava starch waste (onggok) that remains underutilized. This study aimed to enhance the value of onggok by synthesizing a superabsorbent polymer (SAP) through graft copolymerization using acrylic acid monomer and cerium(IV) initiator. Grafting was optimized by varying monomer concentrations (10–40% w/w) while maintaining the initiator concentration at 1.70% (w/w) and a reaction temperature of 53 °C. The optimal grafting occurred at 20% monomer concentration, yielding a grafting percentage of 14.83% and a monomer conversion of 74.15%. FTIR analysis showed increased absorbance ratios of –OH to C=O functional groups, confirming successful grafting. SEM images revealed a transformation from granular to porous structures, while DSC analysis demonstrated a shift in gelatinization temperature from 45.91 °C (raw onggok) to 46.69 °C (grafted), and retrogradation temperature from 140.67 °C to 141.67 °C. The water absorption capacity of the grafted copolymer reached 4.2450 g/g (5.20 g total), nearly double that of raw onggok (2.2716 g/g or 3.20 g), confirming its effectiveness as a SAP material.
Analysis of submerged breakwater models using ripple tank Mutmainnah; Wulandari, Viviq Ardita; Argus, Roman; Atmadi; Pratiwi, Raditya Faradina; Imastuti
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 1 No. 2 (2023): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v1i2.222

Abstract

A breakwater is an infrastructure that functions to dampen wave energy. To secure the area directly adjacent to the coast, an effective breakwater model is needed based on the analysis of the dissipation coefficient value ( ). This study aims to determine a good breaker model based on the  value using a ripple tank. The data analyzed were wave heights before and after passing through the breakwaters of the three concrete models whose arrangement was varied. The results showed that the breaker model that is effective in reducing wave energy is the Grooved cube model with holes arranged horizontally based on the resulting small reflection coefficient ( ) and transmission coefficient ( ) values and large  values
Development of magnetic materials for cobalt titanium oxide using mechanical milling and the characterization methods Imastuti; Ari, Adi Wisnu; Mutmainnah, Mutmainnah; Putri, Haziza Elsa; Pratiwi, Raditya Faradina; Atmadi
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 1 No. 2 (2023): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v1i2.224

Abstract

In the synthesis of magnetic materials for absorbing radar waves, it is necessary to have a base material that has unique magnetic properties that can reach the broadband characteristics of radar frequencies. Cobalt titanium oxide is synthesized using mechanical milling. The phase formed by calcination at 1000℃ with a holding time of 5 hours. Sample characterization was carried out by XRD, VSM and VNA. Based on the research results, it was found that the material obtained had semiparamagnetic properties. From the SEM measurements, it is reactive to the sintering temperature. Radar wave absorption measured by VNA shows that cobalt titanium oxide shows a value with uniform absorption in the X-band wave.
Linear mixed model approach: The effect of poor people & unemployment rate on various types of crime in 34 provinces in Indonesia Atmadi; Tarigan, Nieldy R; Negara, I Putu Aditya Brama Putra Cakra; Syalaisa, Najlaa; Ismail, Muhammad Iqbal Al-Banna
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 2 No. 1 (2024): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v2i1.350

Abstract

Currently, Indonesia faces serious challenges related to increasing crime rates throughout the country. Various types of crime, such as increasing drug cases, increasingly concerning violations of decency, and disturbing acts of fraud, embezzlement, and corruption, have become a major concern for society and the government. In this context, this research plays an important role in efforts to understand the factors that drive the growth of crime and pursue the vision and mission of Indonesia Emas 2045, which sets targets to reduce poverty to reach zero percent. The main focus of the research is to link poverty and unemployment rates with three key types of crime that affect Indonesia's future. In this study, we try to understand how poverty rates and unemployment rates affect these types of crime in 34 provinces in Indonesia. The study used a statistical method called Linear Mixed Model with the support of R software. Of the 27 models analyzed, several models had a significant impact. The data used in this study was obtained from the Central Statistics Agency (BPS). The results of this study provide valuable insights into the factors influencing crime in Indonesia, which in turn can be used as a basis for designing more effective policies in an effort to achieve the vision and mission of Indonesia Emas 2045.
Insights into latent tuberculosis biomarkers from differential gene expression analysis in CD8 memory cells using secondary data Insilico approach Atmadi; Rahayu, Tiara; Wardani, Indah Kusuma; Elsadi, Reihana Marsha Cahyani; Milasari, Azizah Eka; Witadi, M. Ridwan Amarullah
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 2 No. 3 (2024): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def..v2i3.362

Abstract

Tuberculosis (TB) remains a global health challenge, significantly impacting infectious disease mortality and morbidity. In the quest for effective diagnostic tools and precise treatment strategies, differential gene expression (DEG)-based biomarkers offer a promising avenue. These biomarkers provide specific insights into disease states and treatment responses by deciphering gene alterations within body cells. In this study, we aimed to identify immunological signatures associated with latent Mycobacterium tuberculosis infection in memory T cells. Leveraging transcriptomic analysis, we examined memory CD8 T cells from individuals with latent TB (NCBI-GEO GSM2643205) and healthy controls (NCBI-GEO GSM2643198). Our findings highlight candidate biomarker genes—LDB1, ZNF121, and STAT6—whose differential expression could significantly enhance our understanding of CD8 T cell genetic regulation during latent TB infection. These results hold promise for the development of more accurate biomarkers for diagnosing latent tuberculosis.
Rice distribution optimization using initial basic feasible and modified solution to increase food security in West Java Putrandi, Fachri Al Aziz; Mollie, Divacha Vicha; Atmadi; Sembiring, Julio Rivaldo; Fakhar, Abdul
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 3 No. 1 (2025): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v3i1.434

Abstract

Rice is one of the main commodities needed by more than 95% of developing countries, including Indonesia. High population growth that is not accompanied by sufficient rice production will lead to many problems such as malnutrition, famine, and economic crisis, so the availability of rice in Indonesia is the main focus in food security. Farmer welfare is one of the factors in increasing rice production. But in reality, farmers are often constrained by the high cost of distributing rice.  As one of the largest rice producing regions in Indonesia, optimisation of rice distribution costs in West Java needs to be done. the process of optimising rice distribution costs can be done using the transportation method. The transportation method is carried out in 2 stages, namely obtaining the initial solution and the optimal solution. Initial Basic Feasible Solution (IBFS) as one of the approaches in obtaining the initial solution works by considering the average value of new unit costs and columns. As for obtaining the optimal solution, MODI is used, which calculates the opportunity cost of cells that are not given a distribution allocation to assess the optimality of the table. Optimisation of rice distribution using IBFS and MODI resulted in an initial solution of Rp 27,259,921600 and an optimal solution of Rp 27,259,921600 with the Bandung area as the area that supplies the most rice in West Java.
Co-Authors Argus, Roman Ari, Adi Wisnu Elsadi, Reihana Marsha Cahyani Elva Stiawan Fakhar, Abdul Gita, Mutiara Hartono, Rudi Imastuti Ismail, Muhammad Iqbal Al-Banna Kurniadi, Tedi Milasari, Azizah Eka Mollie, Divacha Vicha Mutmainnah Negara, I Putu Aditya Brama Putra Cakra Nurwanto Nuryami Prasojo, Agus Eko Pratiwi, Raditya Faradina Putrandi, Fachri Al Aziz Putri, Haziza Elsa Putri, Riyanti Rahayu, Tiara Sari, Dini Rusfita Sembiring, Julio Rivaldo Syalaisa, Najlaa Syamsiar, Syamsiar Tarigan, Nieldy R Tuhfatul Janan Wardani, Indah Kusuma Witadi, M. Ridwan Amarullah Wulandari, Viviq Ardita