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All Journal Al-Kimia Jurnal SOLMA Communications in Science and Technology JMM (Jurnal Masyarakat Mandiri) Journal of Appropriate Technology for Community Services Acta Chimica Asiana Jurnal Abdimas Kartika Wijayakusuma Jurnal Pengabdian Kesehatan Beguai Jejama NAWASENA: Journal of Community Service
Remi Ayu Pratika
Program Studi Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Palangka Raya
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Upaya Meningkatkan Minat Siswa/i SMAN 1 Palangka Raya Untuk Melanjutkan Kuliah ke Jenjang Perguruan Tinggi Remi Ayu Pratika; Retno Agnestisia; Diah Ayu Pramoda Wardani; Ansori Rahman; I Nyoman Sudyana
Jurnal Pengabdian Kesehatan Beguai Jejama Vol 4, No 2 (2023): Jurnal Pengabdian Kesehatan Beguai Jejama Volume 4 Nomor 2 Agustus 2023
Publisher : Poltekkes Kemenkes Tanjung Karang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26630/jpk.v4i2.13434

Abstract

Proses Seleksi Nasional Penerimaan Mahasiswa Baru (SNPMB) mengharuskan calon mahasiswa memiliki pengetahuan yang mumpuni sebelum mengikuti proses seleksi. Pelaksanaan kegiatan pengabdian dilakukan kepada siswa kelas XII SMA Negeri 1 Palangka Raya berdasarkan kondisi para siswa yang masih belum mengetahui strategi yang tepat dalam menentukan pilihan perkuliahan di Perguruan Tinggi. Tujuannya pelaksanaanya adalah memberikan pengetahuan terkait strategi masuk ke Perguruan Tinggi pilihan serta motivasi untuk menumbuhkan minat siswa dalam mengikuti seleksi masuk Perguruan Tinggi. Metode yang digunakan adalah sosialisasi dalam bentuk ceramah dan diskusi serta pada tahap akhir dilakukan evaluasi. Peserta sosialisasi sebanyak 28 orang merupakan perwakilan dari siswa/i kelas XII. Hasil sosialisasi menunjukkan peserta kegiatan memberikan respons positif terhadap materi yang diberikan. 75% dari siswa/i peserta kegiatan menyatakan Sangat Setuju jika tema kegiatan sesuai dengan yang dibutuhkan. Siswa/i memilih Setuju (32%) dan Sangat Setuju (68%) jika materi yang disampaikan mudah dipahami serta Siswa/i menyatakan Setuju (29%) dan Sangat Setuju (71%) jika pengetahuan mereka mengalami peningkatan.
Implementasi Pembelajaran Kimia Secara Eksperimental Menggunakan Aplikasi Virtual Lab “Chemcollective” Putra, Riandy; Pratika, Remi Ayu; Beladona, Siti Unvaresi Misonia; Kumalasari, Meiyanti Ratna
Jurnal Abdimas Kartika Wijayakusuma Vol 5 No 2 (2024): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jakw.v5i2.424

Abstract

Laboratorium virtual memiliki peran krusial sebagai sarana yang dapat mendukung dan mengantisipasi keterbatasan yang mungkin terjadi dalam laboratorium fisik. Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan pemahaman dan keterampilan praktis siswa dalam pelajaran praktikum IPA, khususnya mata pelajaran kimia dengan menerapkan program virtual komputer Authoring Tool Chemcollective. Hal ini merupakan upaya alternatif untuk mengatasi kendala dalam menggunakan laboratorium di sekolah. Peserta pelatihan melibatkan siswa kelas XI-1 IPA dari SMA Negeri 4 Palangka Raya. Metode yang diterapkan dalam pelatihan mencakup demonstrasi, praktik langsung, dan pendampingan. Dampak positif dari kegiatan ini mencakup peningkatan pengetahuan dan keterampilan siswa terkait metode praktikum kimia berbasis Teknologi Informasi dan Komunikasi (TIK). Siswa menunjukkan kemahiran dalam mengaplikasikan simulasi yang ditawarkan, bahkan menunjukkan minat besar untuk mencoba virtual lab sains lainnya. Berdasarkan hasil pre-test, sekitar 12% (3 dari 25 siswa) mengalami proses pembelajaran kimia melalui penggunaan virtual lab. Namun, nilai post-test menunjukkan bahwa 88% siswa menyatakan pembelajaran kimia menjadi lebih mudah dipahami ketika menggunakan aplikasi virtual lab chemcollective. Pelatihan ini dianggap sangat bermanfaat karena membantu siswa mengatasi hambatan dalam memahami konsep-konsep IPA yang memerlukan praktikum, terutama mengingat keterbatasan alat dan bahan kimia di laboratorium konvensional.
Dual metal NiMo dispersed on silica derived from rice husk ash as a catalyst for hydrocracking of used palm cooking oil into liquid biofuels Wijaya, Karna; Setyono, Risandrika Dwijayanti Putri; Pratika, Remi Ayu; Heraldy, Eddy; Suseno, Ahmad; Hakim, Lukman; Tahir, Iqmal; Oh, Won-Chun; Saviola, Aldino Javier
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1480

Abstract

The production of vegetable-based fuels has intensified in recent years due to the decreasing availability of fossil fuels and their environmental impacts. This study explores the synthesis, characterization, and application of nickel-molybdenum (NiMo) bimetal-dispersed silica catalysts for converting used palm cooking oil into liquid biofuels. The catalysts were synthesized using the wet impregnation method, incorporating Ni and Mo metals at concentrations of 1, 2, and 3% by weight of silica derived from rice husk ash. Impregnation of the silica with Ni and Mo metals increased its acidity, with the NiMo/SiO? 2 catalyst exhibiting the highest acidity value of 4.34 mmol/g. This catalyst also demonstrated the largest specific surface area and total pore volume, measured at 205.51 m²/g and 0.88 cm³/g, respectively. Hydrocracking of used palm cooking oil into liquid biofuels was performed at an optimum temperature of 450 °C with catalyst-to-feed weight ratios of 1:100, 2:100, and 3:100 for 1 h by hydrogen gas supply of 20 mL/min. Catalyst activity tests revealed the highest mass percentage of liquid product, 23.3%, at a ratio of 1:100 (w/w), with a biofuel yield of 20.34%, comprising 14.20% gasoline and 6.14% diesel. By utilizing biomass waste as both a catalyst and feedstock, this study presents a sustainable approach to reducing the carbon footprint and promoting environmental balance.
Isolation and Characterization of Amylolytic Bacteria From Peatlands Area in Central Kalimantan Nafisah, Zahrotun; Riana Dewi, Syahrani; Ayu Andhita, Naswa; Elya Resha, Enjel; Oksal, Efriyana; Ayu Pratika, Remi; Hermayantiningsih, Dwi
Al-Kimia Vol 13 No 1 (2025): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Peatlands in Central Kalimantan, Indonesia, are ecologically significant due to their acidic, organic-rich conditions, yet their microbial communities remain underexplored, particularly regarding their enzymatic potential. This study aimed to isolate and characterize amylolytic bacteria from peat soil collected at a depth of 143–150 cm in the LAHG CIMTROP area of Central Kalimantan. A total of 44 bacterial isolates were obtained using serial dilution and the gridding method. Screening for amylase activity identified isolate ENS31 as having the highest activity, shown by a clear halo on starch agar. ENS31 was further subjected to biochemical characterization and enzyme activity assays. The amylase enzyme exhibited optimal activity at pH 7 and 50°C, with a specific activity of 3.5 U/mg, and retained activity up to pH 12 (2 U/mg). These results indicate that ENS31 produces an enzyme stable in alkaline conditions despite originating from an acidic environment, demonstrating potential for industrial applications requiring pH and temperature-tolerant biocatalysts. This study contributes to understanding the functional diversity of peatland microbes and highlights tropical peat ecosystems as promising sources of novel enzymes.  
PEMBERDAYAAN KADER NASYIATUL AISYIYAH KALIMANTAN TENGAH MELALUI PELATIHAN PEMBUATAN PRODUK WEDANG UNGU SEBAGAI MINUMAN KESEHATAN Pratika, Remi Ayu; Nafisah, Zahrotun; Pratiwi, Endah Yusma; Hermayantiningsih, Dwi; Hakim, Muh. Supwatul
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 4 (2025): Agustus
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i4.31744

Abstract

Abstrak: Indonesia memiliki kekayaan sumber daya alam berupa tanaman lokal yang berpotensi dikembangkan sebagai produk minuman kesehatan, seperti bunga telang, sereh, dan jeruk nipis. Pemanfaatan tanaman lokal ini penting untuk meningkatkan nilai tambah serta pemberdayaan ekonomi masyarakat. Kegiatan pengabdian ini bertujuan untuk meningkatkan hardskill dan softskill kader Nasyiatul Aisyiyah Kalimantan Tengah melalui pelatihan pembuatan produk wedang ungu. Kegiatan dilakukan dengan metode ceramah, praktik langsung (hands-on training), dan diskusi interaktif. Mitra kegiatan adalah 25 orang kader NA Kalimantan Tengah yang aktif dalam unit usaha NA Corner. Evaluasi kegiatan dilakukan melalui angket pretest dan posttest serta wawancara peserta untuk menilai peningkatan pengetahuan dan keterampilan. Hasil evaluasi menunjukkan terjadi peningkatan pengetahuan dan keterampilan peserta hingga 100% pada seluruh indikator, dengan kepuasan peserta terhadap kegiatan mencapai 77%. Kegiatan ini berdampak positif dalam menumbuhkan semangat kewirausahaan berbasis kearifan lokal.Abstract: Indonesia is rich in natural resources, including local plants with potential as health drinks, such as butterfly pea, lemongrass, and lime. Utilizing these plants is important for increasing added value and empowering the local community. This community service activity aimed to enhance both hardskills and softskills of Nasyiatul Aisyiyah cadres in Central Kalimantan through training in the production of wedang ungu (purple herbal drink). The activity was carried out using lectures, hands-on training, and interactive group discussions (FGD). The partners involved were 25 female cadres from Nasyiatul Aisyiyah who are active in the NA Corner business unit. Evaluation was conducted using pretest-posttest questionnaires and participant interviews to assess knowledge and skill improvement. The results showed a 100% increase in participants' knowledge and skills, with 77% of participants reporting high satisfaction with the program. This activity had a positive impact on fostering local wisdom-based entrepreneurship among women.
Sosialisasi Pembuatan dan Manfaat Masker Wajah Alami dari Kayu Bangkal Kalimantan untuk Ibu Rumah Tangga di Desa Habaring Hurung Cahyani, Risfiah; Ariefin, Mokhamat; Yolan Kalalilinggi, Septaria; Ayu Pratika, Remi; Hermayatiningsih, Dwi; Susanty Simaremare, Eva; Ni'mah, Fatchiyatun; Wahyuningsih Manurung, Tety
NAWASENA : JOURNAL OF COMMUNITY SERVICE Vol. 2 No. 01 (2024): Vol 02 No 1 2024
Publisher : NAWASENA : JOURNAL OF COMMUNITY SERVICE

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kegiatan sosialisasi pembuatan dan manfaat masker wajah alami dari kayu bangkal di Desa Habaring Hurung bertujuan untuk meningkatkan pengetahuan dan keterampilan ibu rumah tangga dalam memanfaatkan sumber daya lokal. Program ini melibatkan pemaparan informasi, demonstrasi, dan diskusi interaktif. Hasil kegiatan menunjukkan antusiasme dan partisipasi aktif dari para peserta, yang memperoleh pemahaman mendalam tentang manfaat kayu bangkal untuk perawatan kulit. Selain itu, para ibu rumah tangga berhasil mengembangkan keterampilan teknis dalam pembuatan masker wajah alami dan berdiskusi mengenai peluang serta tantangan dalam produksi dan pemasaran produk tersebut. Kesimpulannya, kegiatan ini tidak hanya meningkatkan kesadaran dan pengetahuan peserta, tetapi juga membuka peluang untuk pengembangan usaha rumahan berbasis produk kecantikan alami. Program ini berhasil memberdayakan ibu rumah tangga dan berpotensi memberikan dampak positif yang berkelanjutan bagi komunitas Desa Habaring Hurung.
Peningkatan Produktivitas Hasil Pertanian Melalui Pelatihan Pembuatan Pupuk Organik Cair dari Tanaman Purun Kalalinggi, Septaria Yolan; Kumalasari, Meiyanti Ratna; Beladona, Siti Unvaresi Misonia; Putra, Riandy; Pratika, Remi Ayu
Journal of Appropriate Technology for Community Services Vol. 6 No. 1 (2025)
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jattec.vol6.iss1.art9

Abstract

The influence of the utilization of chemical fertilizers on agricultural land has a negative impact on the environment since it can reduce soil fertility and pollute air and water. Currently, the use of chemical fertilizers is starting to be reduced. The development of organic fertilizers derived from natural ingredients began to be developed, where the advantages of using organic fertilizers are easy to obtain, environmentally friendly, and low production costs. The Community Empowerment Assistance Lecturer Program was carried out in Tuwung Village, Pulang Pisau Regency, Central Kalimantan. This program is carried out in order to empower farmers as an effort to increase the productivity of their agricultural products. The aims of this program are; 1). Provide training to farmers related to how to make liquid organic fertilizer from purun plants; and 2).  Determine the effectiveness of the implementation of training on increasing farmers' knowledge in making liquid organic fertilizer. Training activities were presented to the introduction of purun plants and their potential as materials for making liquid organic fertilizer. Next, the activity continued with a demonstration of how to make liquid organic fertilizer from purun plants. Finally, the farmers were asked to practice directly making liquid organic fertilizer. The results of this training had an positive response on the knowledge and skills of farmers in Tuwung Village, Pulang Pisau Regency, in making liquid organic fertilizer. In addition, this activity is considered effective and efficient based on the results of the evaluation in accordance with the target achievement. 
Upaya Menekan Penyakit Menular dan Tidak Menular melalui Pendekatan Edukasi Kesehatan Berbasis Herbal dan Pendampingan Latihan Fisik Ysrafil, Ysrafil; Komara, Nisa Kartika; Hanasia , Hanasia; Pratika, Remi Ayu; Ahmad, Farah Fauziyah Radhiyatulqalbi
Jurnal SOLMA Vol. 14 No. 3 (2025)
Publisher : Universitas Muhammadiyah Prof. DR. Hamka (UHAMKA Press)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22236/solma.v14i3.20891

Abstract

Background: Based on Indonesian Health Survey, Central Kalimantan has the highest prevalence of hypertension in Indonesia (40.7%). A similar situation occurs in Pahandut Seberang, In 2024, hypertension among top three most common diseases alongside respiratory tract infections and scabies, with 200, 290, and 190 cases out of 1,831 residents. The high incidence rate is influenced by excessive salt consumption, smoking, lack of physical activity, and geographical conditions prone to flooding. Recently, community has mostly used conventional drugs that cause side effects, while small number have tried herbal medicines, but their processing has not been appropriate. Method: To address these issues, our team implemented community service program consisting of education on hypertension, ISPA, and scabies, training on innovative herbal products, and physical exercise guidance (aerobic exercises, elderly exercises, and yoga) by involve of professional instructors. Results: The post-test results showed an increase in the cadres' understanding of educational material. Participants were also able to independently practice processing herbal plants into useful products (herbal tea, liquid soap, aromatherapy candles, and herbal creams) and demonstrate the physical exercises they had been taught. The community showed high enthusiasm, accompanied by appreciation and gratitude for the activities. In addition, the community service team teach cadres in obtaining PIRT (Traditional Food Product Registration) to support the sustainability of herbal products. Conclusion: The program successfully improved the knowledge, skills, and independence of cadres in processing herbs and performing physical exercises, thereby becoming strategic to prevent and reduce the incidence of communicable and non-communicable diseases in Pahandut Seberang
Coconut shell charcoal briquettes production using banana corm adhesive Pratika, Remi Ayu; Armadany, Fery Indradewi; Fahyuddin
Acta Chimica Asiana Vol. 8 No. 2 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i2.249

Abstract

The production of biomass-based briquettes from coconut shell charcoal and banana corm adhesive has been successfully carried out. This research aims to determine whether the banana corm may serve as an adhesive for briquette production from coconut shell charcoal. The concentration of banana corm utilized as adhesive is 10, 20, 30, 40, and 50%. For comparison analysis, this study also employed tapioca flour adhesive with the same concentration. The briquettes adhere to the SNI 01-6235-2000 standard for briquettes. The quality of briquettes is determined based on fixed carbon content and calorific value. The minimum standard calorific value and fixed carbon content are 5000 cal/g and 65%, respectively. Briquettes with a 90:10 ratio (coconut shell charcoal to banana corm adhesive ratio) had the highest calorific value of 7250 cal/g and fixed carbon content of 80.04%. In comparison, the tapioca flour adhesive provides a calorific value and fixed carbon content of 6995 cal/g and 81.09%, respectively. Furthermore, another indicator that determines briquette quality is the content of moisture, ash, and volatile matter. Briquettes with a 90:10 ratio possessed low moisture content (3.55%), ash content (6.45%), volatile matter content (9.96%), and burning rate (0.020 g/sec). This result indicates that the briquettes with a 90:10 ratio exhibit the greatest quality. Briquettes with banana corms adhesive have similar characteristics to tapioca flour, especially in terms of calorific value. As a result, the highlight of this research lies in offering banana corm, which has scientific contribution and future potential as an alternative adhesive in the briquetting process
Co-Authors Ahmad Suseno Ansori Rahman Armadany, Fery Indradewi Ayu Andhita, Naswa Cahyani, Risfiah Diah Ayu Pramoda Wardani Eddy Heraldy Elya Resha, Enjel Fahyuddin Hakim, Muh. Supwatul Hanasia , Hanasia Hermayantiningsih, Dwi Hermayatiningsih, Dwi I Nyoman Sudyana Iqmal Tahir Kalalinggi, Septaria Yolan Karna Wijaya Komara, Nisa Kartika Lukman Hakim Mokhamat Ariefin Nafisah, Zahrotun Ni'mah, Fatchiyatun Oh, Won-Chun Oksal, Efriyana Pratiwi, Endah Yusma Retno Agnestisia Riana Dewi, Syahrani Riandy Putra Sari, Meiyanti Ratna Kumala Saviola, Aldino Javier Setyono, Risandrika Dwijayanti Putri Siti Unvaresi Misonia Beladona Wahyuningsih Manurung, Tety Yolan Kalalilinggi, Septaria Ysrafil, Ysrafil