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Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA)
Published by Pusat Riset dan Inovasi Nasional
ISSN : 28289382     EISSN : 28289390     DOI : https://doi.org/10.55606/jurrimipa.v1i1
Core Subject : Education,
Mathematics
Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam adalah jurnal yang ditujukan untuk publikasi artikel ilmiah yang diterbitkan oleh Pusat riset dan Inovasi Nasional, Universitas Sains dan Teknologi Komputer. Jurnal ini adalah jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam yang bersifat peer-review dan terbuka. Bidang kajian dalam jurnal ini termasuk sub rumpun Ilmu IPA, Ilmu Matematika, Ilmu Kebumian dan Angkasa. Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam menerima artikel dalam bahasa Inggris dan bahasa Indonesia dan diterbitkan 2 kali setahun: April dan Oktober.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 200 Documents
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Integrasi Konsep Geometri dan Etnomatematika : Pemanfaatan Ketupat Sebagai Media Kontekstual Berbasis Kearifan Lokal dalam Pembelajaran Matematika Ima Rosila; Umi Mahmudah
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.5874

Abstract

mathematical instruction often lacks relevance to students’ real-life contexts, necessitating more meaningful and contextualized approaches. This study aims to integrate geometric concepts and ethnomathematics through the utilization of ketupat a traditional Indonesian cultural artifact as a culturally grounded instructional medium. A descriptive qualitative method was employed, using literature review and contextual observation of the geometric structure of ketupat. The findings reveal that ketupat encompasses geometric elements such as symmetry, three-dimensional forms, woven patterns, and calculations of volume and surface area. Moreover, ketupat holds significant symbolic meaning within Indonesian culture, making it a relevant bridge between mathematical concepts and local values. The study concludes that using ketupat as a contextual medium enhances students’ conceptual understanding of geometry and strengthens the integration of cultural values within mathematics education.
Pemanfaatan Energi Cahaya untuk Sistem Penyiraman Otomatis Berbasis Internet of Things (IoT) di SMA Negeri 2 Lembang Dulhamin Arif; Shandi Noris; Erfin Nurfalah; Ahmad Subeki; Rina Hidayati Pratiwi
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.5888

Abstract

Watering plants is an important activity that cannot be ignored in order to maintain sufficient air intake for optimal growth. Manual watering methods, which are commonly carried out according to a schedule, are often inefficient because they require significant allocation of time and energy. Improper watering techniques are one of the risks of plant growth factor failure, where unmaintained soil moisture can cause plants to wilt and die. This study aims to develop an automatic irrigation system based on the Internet of Things (IoT) that utilizes light energy as its power source, with the aim of being able to save time, lighten human work, and at the same time optimize the use of energy resources. This system is designed to monitor soil conditions in real-time and regulate watering automatically, supported by a sustainable light energy source. The results of this study indicate that the automatic watering system based on the Internet of Things (IoT) developed and powered by light energy is able to overcome the problem of plant drought effectively, while saving time and lightening human work in watering activities. 
Pengaruh Pendekatan Scaffolding dalam Pembelajaran Matematika terhadap Prestasi Belajar Siswa di MTsN Jambewangi Selopura Blitar Moh. Nasrul Fuad; Muhammad Zainuddin MZ; Nizar Zakaria
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6000

Abstract

This study aims to test the effect of the scaffolding approach in mathematics learning on student achievement at MTsN Jambewangi Selopuro Blitar. With a quantitative approach and quasi-experimental research type, this study used a randomized post-test group design. Class VIII G as the control class and VIII H as the experimental class, with 37 students each, were selected using cluster sampling techniques. Data were collected through tests and analyzed with the Independent Samples T Test. The results showed that the scaffolding approach had a significant effect on student achievement, so it can be an alternative effective learning method to improve students' ability to understand mathematical concepts. The scaffolding approach is a very effective learning method in improving student achievement, especially in understanding complex mathematical concepts. By providing appropriate assistance and support in the early stages of learning, students can build a strong foundation and improve their abilities gradually. Therefore, the scaffolding approach can be an alternative effective learning method for teachers to improve student learning outcomes.
Fortifikasi Ekstrak Filamen Telur Ikan Terbang (Hirundichthys oxicheplus) dalam Saus Cabai Rahmawati Saleh; Luthfiah Luthfiah; Adilham Adilham; Andi Santi; Rahmat Tola
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6072

Abstract

Flying fish (Hirundichthys oxycephlus) roe filaments, which are often considered as by-products, have high protein content and various essential nutrients, thus potentially increasing the nutritional value of food products. With innovation and in-depth research, this waste can be transformed into products with economic value while supporting the implementation of sustainability principles in the fisheries industry, in this case sauce as a flavoring that has become an important part of the food industry. This study aims to determine the quality of the texture and taste of chili sauce fortified with fly fish (Hirundichthys oxycephlus) roe filament extract and to determine the protein content and water content of chili sauce enriched with fly fish (Hirundichthys oxycephlus) roe filament extract. The methodology used in this study was Complete Random Design (CRD) with variations in filament powder concentration (0%, 0.5%, 1%, and 1.5%) on the sensory characteristics of chili sauce, which include aroma, color, taste, and texture. The results of organoleptic tests showed that the addition of fly fish (Hirundichthys oxycephlus) egg filament extract had a significant positive impact on all sensory parameters tested. The average aroma score increased from 2.88 in the non-enriched treatment to 3.90 at the highest filament powder concentration (1.5%). In addition, the taste score also showed the most striking increase, from 2.80 to 4.33. Analysis of the water content of the chili sauce product was recorded at 79.93% according to (SNI 01-2976-2006), while the protein content reached 10.53%, indicating the potential of this product as an additional source of protein in daily consumption patterns.
Memahami T1 dan T2 melalui Pulsed NMR: Sebuah Studi Literatur tentang Relaksasi Spin dalam Sistem Magnetik Maria Tefa; Hartoyo Yudhawardana; Aurelia Astria L. Jewaru; Markus Simeon K. Maubuthy
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6153

Abstract

The Pulsed Nuclear Magnetic Resonance (PNMR) technique is a widely used spectroscopic approach for observing the relaxation phenomena of atomic nuclei in a magnetic field. In this technique, the spin-lattice (T1) and spin–spin (T2) relaxation times are key parameters, as they reflect the microscopic dynamics and structure of a material system. This article presents the results of a systematic literature review of fourteen primary references that discuss the fundamental concepts of NMR, PNMR techniques, the measurement of T1 and T2, and PNMR applications. Although NMR research has seen extensive development internationally, scientific literature in the Indonesian language that specifically addresses this topic remains scarce. Therefore, this paper is intended to serve as an initial systematic resource to introduce the basic principles and potential applications of PNMR in physics and materials science.
Uji Organoleptik Terhadap Perbandingan Pepaya (Carica papaya l) dan Wortel (Dauncus carota l) Dalam Pembuatan Saus Sasmita , Miza; Eva Nauli Taib; Mulyadi Mulyadi; Zuraidah Zuraidah; Elita Agustina
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6188

Abstract

This study aims to describe the level of consumer liking or acceptance of a product, it absolutely requires a test called the organoleptic test and hedonic test This research was conducted in quantitative analysis In the implementation of this study, the experiment conducted was an experiment consisting of 4 treatments, Each treatment was carried out as many as 3 replicates so that 12 experimental units were obtained The treatments used were po (control) = regular sauce 100% Traditional chilli sauce packaging, p1 = 50% papaya sauce and 50% carrot sauce 500 grams of papaya + 500 grams of carrots, p2 papaya sauce (pure) 100% 1 kg papaya, p3 = carrot sauce (pure) 100% 1 kg organoleptic research results The highest colour was p1 4.3, aroma p3 3.9, taste p1 3.95, and texture p14. 25. As for hedonics, the highest was for colour p1 4.75, aroma p3 4.55, taste p1 4.25 and texture p3 4.5. Organoleptic tests involving colour, aroma, taste and texture showed values for colour in sample 1 with an average value of 4.3, aroma in sample 3 with an average value of 3.9, taste in sample 1 with an average value of 3.95 while texture in sample 1 with an average value of 4.25. The results of the hedonic test assessed consumer preference for sauces in samples 1 and 3 for sample I with an average value of 4.75 and a taste of 4.25 in the like category. While in sample 3 consumer assessment of aroma average value 4.55 and texture 4.5 category.
Uji Organoleptik Telur Asin dengan Berbagai Media Pengasinan Auliani, Nurul Rizka; Taib, Eva Nauli; Agustina, Elita; Hanim, Nafisah; Zuraidah, Zuraidah
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6191

Abstract

Salted eggs are one from of processed eggs that aims to extend shelf life and improve taste. Biology Education Studentsfrom the 2021 and 2022 classes are khown to only know straw and ash salting media, so this study aims to analyze the effect of four salting media: straw, brunt rice husk, burnt coconut fiber, and salt solution on the organoleptic quality of salted eggs. The research was conducted experimentally using a descriptive analysis approach using averages with 4 treatments and involving 20 panelists from two classes. The parameters tested included aroma, taste, color, and texture using a 5 level Likert scalee. The results of the organoleptic test showed that the burnt rice husk media produced the most preferred taste (score 3.4), the best color was produced by the straw media (score 4), and the highest texture was also found in the burnt rice husk media (score 3.6). The highest aroma was recorded in the straw media (score 3.35). The salt solution media had the lowest scores in almost all aspect. In conclusion, the burnt rice husk media is the most superior media overall in producing preferred salted eggs based on the organoleptic test.
Perbandingan Model PjBL dan DL Pada Materi Struktur Atom Terhadap Aktivitas dan Hasil Belajar Siswa Kelas X SMAN 2 Kupang Lolita Agusta Magdalena Parera; Yosua Ximenes; Heru Christianto
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i1.6313

Abstract

An investigation was conducted at A State Senior High School in Kupang City, NTT.to assess how Project-Based Learning (PjBL) and Discovery Learning (DL) models differentially impact student learning activities and outcomes when teaching atomic structure. Adopting a quasi-experimental design with a nonequivalent control group, the study collected data through comprehensive activity questionnaires, observation sheets, and pretest/posttest instruments. The findings clearly showed that PjBL significantly boosted student learning activities, with an average score of 81.19, considerably higher than the 66.15 observed in the DL group. This significant difference was statistically confirmed by an independent samples t-test. Regarding learning outcomes, the PjBL group's average (70.97) was marginally better than the DL group's (68.89), but this difference did not reach statistical significance. It is suggested that limitations in learning time may have played a role in the learning outcomes. This study concludes that PjBL is superior for enhancing student engagement and activity, while both PjBL and DL are equally effective in improving student learning outcomes. Ultimately, the choice of a learning model should be strategically aligned with educational goals, subject matter, and the unique characteristics of the classroom to maximize student achievement.
Identifikasi Jenis Lamun (Seagrass) Menggunakan Metode Transek Kuadran di Pantai Wisata Sarawandori Roy Marthen Rahanra; Susanti Fakaubun; Yenniwati Sinaga; Yusuf Karllos Numberi
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i1.6328

Abstract

Seagrass plays an important role in coastal communities because it is one of the factors that supports the diversity of flora and fauna, influences the productivity of coastal waters, helps stabilize sediments, controls water clarity and quality and can also affect other surrounding ecosystems. The purpose of this study was to determine the types of seagrass in the coastal waters of Sarawandori village tourism, Kosiwo District, Yapen Islands Regency, Papua Province. This study used the quadrant transect method and compared the types found using an identification book. The results showed that the types of seagrass found were Cymodocea rotundata, Cymodocea serrulate, and Thallasia hemprichii and the most common species found was Cymodocea serrulate.
Sample Preparation Technique for Scanning Electron Microscopy in Analyzing Shrimp Shell Biodegradation by Actinomycetes through Solid-State Fermentation Widyastuti Widyastuti; Annisa Ananda; Rohimatul Anwar; Kurniawan Shidiq
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 4 No. 2 (2025): Agustus: Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v4i2.6342

Abstract

Shrimp shell waste is a chitin-rich biopolymer with high potential for microbial bioconversion into value-added products. This study aimed to analyze the microstructural degradation of shrimp shells by the actinomycete isolate 18D38A1 under solid-state fermentation, using Scanning Electron Microscopy (SEM). A fresh sample preparation method was applied, involving washing and immersion in 70% ethanol, followed by vacuum drying and gold sputter-coating. Fermentation was conducted over a period of 1 to 4 days. SEM analysis revealed progressive structural deterioration of the shrimp shell matrix, including increased surface erosion, pore formation, and breakdown of chitin fibers, which became more pronounced each day. These observations indicate active and time-dependent biodegradation by isolate 18D38A1. The sample preparation protocol proved effective in preserving morphological features and enhancing SEM image clarity, enabling precise visualization of degradation stages. The combination of solid-state fermentation and optimized SEM preparation provides a reliable approach to evaluate the biodegradation process of chitinous waste by actinomycetes over time. This study demonstrates a practical SEM sample preparation method for visualizing the progressive biodegradation of shrimp shell by actinomycete isolate 18D38A1 from day 1 to day 4.

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