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All Journal Farmasains : Jurnal Farmasi dan Ilmu Kesehatan Biology, Medicine, & Natural Product Chemistry Lantanida Journal Walisongo Journal of Chemistry Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Fullerene Journal of Chemistry BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Sains dan Edukasi Sains Jurnal Ilmiah Wahana Pendidikan Jurnal Pustaka Mitra : Pusat Akses Kajian Mengabdi Terhadap Masyarakat Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi E-Amal: Jurnal Pengabdian Kepada Masyarakat
Martasiana Karbeka
Universitas Tribuana Kalabahi
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PENGARUH KONSENTRASI LARUTAN HF PADA PROSES PREPARASI TERHADAP KADAR UNSUR BAHAN MAGNETIK PASIR BESI Rettob, Abraham Laurens; Karbeka, Martasiana
Walisongo Journal of Chemistry Vol 2, No 1 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1694.899 KB) | DOI: 10.21580/wjc.v3i1.3877

Abstract

Bahan magnetik (BM) pasir besi alam merupakan salah satu sumber adsorben magnetik. Selain BM, pasir besi alam juga mengandung bahan non-magnetik . Preparasi BM pasir besi dilakukan pada penelitian ini dengan tujuan untuk meningkatkan kadar unsur magnetik di dalamnya. Pasir besi alam yang digunakan berasal dari pesisir pantai Lansilowo. Preparasi dilakukan dengan pencucian menggunakan larutan HF dengan konsentrasi 0, 2, 5 dan 10%. Hasil analisis kadar unsur dengan XRF menunjukkan bahwa unsur dominan pada pasir besi Lansilowo adalah Fe dan Cr, yang merupakan unsur penyumbang sifat kemagnetan pada BM. Pencucian dengan larutan HF berbagai konsentrasi menyebabkan terjadinya perubahan kadar unsur pada BM. Semakin tinggi konsentrasi larutan HF mengakibatkan terjadinya peningkatan kadar Fe dan Cr total (89,56%) serta penurunan kadar Si (2,60%).  Hasil penelitian menunjukkan bahwa konsentrasi larutan HF optimum yang digunakan adalah 10%. 
KARAKTERISASI SIFAT KEMAGNETAN PASIR BESI PANTAI PUNTARU KABUPATEN ALOR-NTT Martasiana Karbeka; Faryda Veronica Lamma Koly; Nini Mau Tellu
Lantanida Journal Vol 8, No 2 (2020)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v8i2.7867

Abstract

Iron sand is a source of natural magnetic material which is quite abundant. Iron sand can be useful as a magnetic source material which has the potential as a raw material for using magnetic materials. Iron sand contains non magnetic minerals which can reduce its magnetic properties. Therefore, iron sand sample preparation was carried out by washing NaOH 0,4 M and sand sample size variations. The purpose of this study was to determine the effect of washing and the size of iron sand on the magnetic properties in terms of the increase in magnetic elements. The results of research with XRF (X-Ray Fluoresence) show that iron sand with a size of 120 mesh has a magnetic content of Fe (78.07%) higher than iron sand with a size of 80 mesh with Fe content (34.63%). XRD (X-Ray Diffraction) analysis shows that washing iron sand with a size of 80 mesh gives a quarts phase (SiO2) at 2θ = 27.62° and iron sand washing with a size of 120 mesh gives the main peak magnetite phase (Fe3O4) at 2θ = 30.69° with a crystallinity of 15%. VSM (Vibrating Sample Magnetometer) analysis depicted on the hysteresis curve shows that the smaller the particle size of iron sand, the higher the magnetic properties. There are still minor oxides in iron sand as  oxide minerals.
Analysis of the effect of tofu industrial waste on dug well water quality Sara Antoneta Atakari; Zakarias Mautuka; Martasiana Karbeka; Loth Botahala
Farmasains : Jurnal Farmasi dan Ilmu Kesehatan Vol. 5 No. 2 (2020)
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/farmasains.v5i2.13298

Abstract

The industrial tofu factory located in Lautingara Kelurahan Kalabahi Tengah, where the remaining liquid waste is channeled directly into the reservoir without prior treatment, can affect water quality in the dug wells. The purpose of this study was to determine the quality and feasibility of dug well water as drinking water-based on parameters of pH, BOD, COD, nitrite, and nitrate of dug well water, which is suspected to be contaminated by the presence of tofu waste. The results showed that the pH value and nitrite value (NO2-) of the three dug well water samples in Lautingara met the drinking water quality standards, while the BOD, COD, and nitrate (NO3-) values in the three dug well water samples in Lautingara did not meet the values quality standards and not suitable for drinking water.
Making Supplementary Foods Based on The Local Food of The Alor Community for Stunting Prevention Monika Caterina; Yovita Banik; Yoas Famai; Martasiana Karbeka
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 5 No. 1 (2022): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.687 KB) | DOI: 10.35568/abdimas.v5i1.1428

Abstract

ABSTRACT The case of stunting under five in North Mataru in 2019 was still very high at 51.8%. This percentage exceeds the national stunting percentage in 2019 which shows a declining trend of 27.67% (Rikesda 2018). Based on the results of the survey in the field, it is known that the local community has a variety of field products as local food. Local food produced is very diverse including rice, corn, tubers, and vegetables. This local food has sufficient nutritional value to meet the nutritional needs of toddlers in supporting toddler growth. The purpose of implementing this PKM is to provide understanding to the cadres of integrated service posts in North Mataru Village through the socialization of local food ingredients (brown rice and moringa) and the benefits of local food to prevent stunting and provide training on making local MP-ASI from brown rice ingredients and moringa. The results of this service activity showed that the participants became more aware of the benefits of local food to be processed into complementary foods (MP-ASI) in supporting toddler nutrition. In addition, the direct training made the participants more enthusiastic and gave a good assessment that they had gained new knowledge and skills. Participants who attended were also committed to continuing the results of the training to be passed on to other breastfeeding mothers.
PELATIHAN PEMBUATAN MINYAK KEMIRI BAGI KELOMPOK IBU-IBU PKK DESA BOUWELI Martasiana Karbeka; Andri P. Timung
BERNAS: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 4 (2020)
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.391 KB) | DOI: 10.31949/jb.v1i4.467

Abstract

Desa Bouweli merupakan salah satu desa di Kecamatan Pantar Kabupaten Alor. Potensi desa yang paling menonjol adalah hasil perkebunan kemiri. Komoditi kemiri menjadi andalan masyarakat untuk mendukung perekonomian keluarga. Kemiri yang dihasilkan langsung dijual tanpa proses pengolahan. Jika produksi kemiri meningkat maka harga kemiri akan merosot. Oleh karena itu, dilakukan pelatihan pembuatan minyak kemiri bagi ibu-ibu PKK dengan tujuan untuk dapat meningkatkan ekonomi masyarakat. Dengan pelatihan ini, ibu-ibu mendapat pengetahuan dan ketrampilan yang dapat menjadi modal dalam pengembangan usaha. Metode pelatihan yang diterapkan berupa pembagian materi kepada peserta dan pemaparan materi secara rinci sesuai dengan tahapan prose pembuatan minyak kemiri. Selanjutnya dilakukan praktek langsung pembuatan minyak kemiri. Hasil pelatihan sangat memuaskan karena peserta pelatihan memahami dengan baik prose pembuatan minyak kemiri dan minyak kemiri yang dihasilkan berwarna kuning jernih. Pengetahuan dan ketrampilan ini dapat menjadi modal awal dalam pengembangan usaha minyak kemiri oleh ibu-ibu PKK di Desa Bouweli.
Pemanfaatan Biochar Tongkol Jagung Guna Perbaikan Sifat Kimia Tanah Lahan Kering Zakarias Adrianto Mautuka; Astriana Maifa; Martasiana Karbeka
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 1 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.162 KB) | DOI: 10.5281/zenodo.5827375

Abstract

One of the soil properties related to plant growth and development is soil chemical properties. Soil chemical components include soil pH, c-organic, cation exchange capacity, macro and micro nutrients. One of the efforts to improve soil quality that can be taken is the use of materials classified as soil enhancers, namely biochar. One of the plant biomass that can be used as a source of biochar is corn cobs. Corncob biochar is made by combustion of limited oxygen in a prepared combustion pit. The purpose of this study was to determine the effect of biochar from coconut shell on soil improvement in terms of soil chemical properties (pH, C-organic, N, P, K, C/N, CEC). The results of the study of soil chemical properties on the growth of shallot plants with the addition of biochar were able to increase soil nutrients such as pH, C-organic 6.81%, nitrogen 0.33%, phosphorus 0.10%, potassium 0.56%, and C ratio. /N 20.64 %, CEC 20.64 meq/100g.
Identifikasi Mineral Pasir Tiga Warna Pantai Puntaru Kabupaten Alor-NTT Martasiana Karbeka; Herianus Manimoy; Bertho A Abolasinga
Jurnal Kimia Fullerene Vol 6 No 1 (2021): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v6i1.258

Abstract

Puntaru beach is famous for its three-colored sand that is mixed into one of them reddish-brown, black, and white sand. Research on the mineral composition of the tricolor sand has been conducted so that the use of three-colored sand is still done traditionally. This study aims to obtain information on the silica content and other mineral compositions of the three-colored sand of Puntaru Beach as initial data for further development. The three-color sand preparation process is carried out by the method of milling / crushing sand samples then sieving and washing with H2O. Stages of characterization of silica in three-colored sand were carried out using X-ray fluorescence (XRF), X-ray powder diffraction (XRD), and Fourier-transform infrared (FTIR). The analysis showed that the percentage of Si was the most dominant 45.28%, followed by Fe 25.94% and other minor elements. XRD results show that the three-colored sand contains quartz mineral (SiO2) identified at the main peak with 2 with in the 24.34 ° area. The black color of the sand is influenced by Fe content of 25.94% with hematite metal oxide (Fe2O3) 15.80% and reddish-brown influenced by the presence of sulfur (3.25%) in the form of mineral SO3 4.32%.
PENGARUH KONSENTRASI LARUTAN HF PADA PROSES PREPARASI TERHADAP KADAR UNSUR BAHAN MAGNETIK PASIR BESI Abraham Laurens Rettob; Martasiana Karbeka
Walisongo Journal of Chemistry Vol 2, No 1 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v3i1.3877

Abstract

Bahan magnetik (BM) pasir besi alam merupakan salah satu sumber adsorben magnetik. Selain BM, pasir besi alam juga mengandung bahan non-magnetik . Preparasi BM pasir besi dilakukan pada penelitian ini dengan tujuan untuk meningkatkan kadar unsur magnetik di dalamnya. Pasir besi alam yang digunakan berasal dari pesisir pantai Lansilowo. Preparasi dilakukan dengan pencucian menggunakan larutan HF dengan konsentrasi 0, 2, 5 dan 10%. Hasil analisis kadar unsur dengan XRF menunjukkan bahwa unsur dominan pada pasir besi Lansilowo adalah Fe dan Cr, yang merupakan unsur penyumbang sifat kemagnetan pada BM. Pencucian dengan larutan HF berbagai konsentrasi menyebabkan terjadinya perubahan kadar unsur pada BM. Semakin tinggi konsentrasi larutan HF mengakibatkan terjadinya peningkatan kadar Fe dan Cr total (89,56%) serta penurunan kadar Si (2,60%).  Hasil penelitian menunjukkan bahwa konsentrasi larutan HF optimum yang digunakan adalah 10%. 
The Effect of Storage Time on the Quality of Immersion Oil Made from Kesambi (Scheichera Oleosa) in the Image of Onion Cell Plant Zakarias Adrianto Mautuka; Martasiana Karbeka; Monika Molina; Suratno Suratno
Walisongo Journal of Chemistry Vol 5, No 1 (2022): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v5i1.9338

Abstract

The need for immersion oil becomes very important in carrying out various laboratory analyses with a microscope to clarify the image of objects with sharp imaging. To answer this need, research has been carried out to find an alternative to immersion oil by utilizing one of the typical Alor plants that grow a lot in dry areas, namely Kesambi. In this study, the results of the immersion oil test from Kesambi which was made in 2016 were compared with the results of the retest of the same oil in 2021 and compared with standard immersion oil to determine the quality of the immersion oil. In the existing stock of Kesambi immersion oil, physical properties analysis, GC-MS, and imaging of onion cells were carried out. The results showed that the comparison of the physical properties of Kesambi immersion oil which was analyzed in 2016 and the results of the re-analysis in 2021 showed that there was no significant difference based on the parameters of density, viscosity, refractive index, acid number, and aperture value. Results GC-MS in standard immersion oil only contained 49.68% benzyl benzoic acid and reanalyzed Kesambi immersion oil found palmitic acid 12.26%, oleic acid 46.46%, stearic acid 5.26% arachidic acid 13, 84%, and other spectra were detected as impurities. Although there were impurities and differences in fatty acid content between the standard immersion oil and the immersion oil from Kesambi that had been stored for five years, there was no difference in the imaging results of onion cells.
Belajar Perkalian dengan Menggunakan Metode Jarimatika Untuk Anak Usia SD Desa Alaang, Kabupaten Alor Jeni Marianti Loban; Narita Yuri Adrianingsih; Landerius Maro; Martasiana Karbeka
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 1 No. 4 (2022): November 2022
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdikan.v1i4.1135

Abstract

Counting for some children is a difficult and boring activity, this has an impact on children's interest in mathematics is low. Therefore it is necessary to make efforts to increase children's interest in mathematics. A creative, innovative and interactive and fun learning process can increase children's interest and ability towards mathematics. Besides that, fun counting activities can increase a love for mathematics and counting, this is the goal of this community service activity. Multiplication by using the jarimatics method can help students more easily understand and remember multiplication one (1) to nine (9). The target of this service is all elementary school-age children in Alaang Village, Alor Barat Laut District, Alor Regency-NTT. These activities can run with the support of the Alaang Village government and all the community, our learning activities are carried out in the open, namely the shores of Alaang beach, with the concept of learning while playing. The enthusiasm of the children was high and they were interested in and really enjoyed the process of learning to count multiplication with fingers.Keywords: Calculate Multiplication, Jarimatika method.
Co-Authors Abraham Laurens Rettob Andri P. Timung Asgat Karmani Astriana Maifa Bertho A Abolasinga Botahala, Loth Djasibani, Hemy Ratmas Faryda Veronica Lamma Koly Herianus Manimoy Jeni Marianti Loban Landerius Maro Lily, Diana Oktovina Tung Monika Caterina Monika Molina Nahak, Maria Hendriana NARITA YURI ADRIANINGSIH Nini Mau Tellu Pibo, Lodia Rambu Yorinata Banik Rettob, Abraham Laurens Sara Antoneta Atakari Suratno Suratno Tersia Pen'au Yoas Famai Yovita Banik Zakarias Adrianto Mautuka Zakarias Mautuka