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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Bioscientist : Jurnal Ilmiah Biologi
Baiq Mariana
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PELATIHAN DAN PENDAMPINGAN DEMO INSTRUMENTASI BAGI MAHASISWA SEBAGAI BAGIAN GOOD LABORATORY PRACTICE Dhony Hermanto; Nurul Ismillayli; Ulul Khairi Zuryati; Ruru Honiar; Baiq Mariana; I G. Ayu Sri Andayani
SELAPARANG Jurnal Pengabdian Masyarakat Berkemajuan Vol 5, No 1 (2021): Desember
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v5i1.6393

Abstract

ABSTRAKLaboratorium kimia merupakan salah satu jenis laboratorium yang memiliki resiko sangat berbahaya dalam penyelenggaraan pendidikan, penelitian dan/atau pengabdian kepada masyarakat, sehingga laboratorium harus dikelola dan digunakan secara baik dan bijaksana. Pengoperasian peralatan sebagai salah satu aktivitas Good Laboratory Practice (GLP) merupakan aktivitas secara rutin dilakukan di laboratorium kimia. GLP dapat mewujudkan keselamatan kerja di laboratorium dan meminimalisir kerusakan peralatan akibat kesalahan operasi dan pemeliharaan instrumen. Kegiatan pengabdian ini adalah demo peralatan/instrumentasi Laboratorium Kimia Analitik FMIPA–Universitas Mataram. Metode kegiatan yang dilakukan yaitu pelatihan dan pendampingan yang berupa demo peralatan/instrumentasi meliputi kromatografi gas–spektroskopi massa (GC-MS), kromatografi cair kinerja tinggi (KCKT), spektrometer serapan atom (SSA) dan infra merah (FTIR). Kegiatan ini dilakukan untuk meningkatkan keterampilan dasar mitra dalam pengoperasian instrumentasi tersebut. Mitra kegiatan adalah 20 mahasiswa program studi Kimia semester lanjut (5-8). Keberhasilan kegiatan diukur dengan membandingkan skor tes mitra sebelum dan setelah kegiatan dilakukan. Kegiatan pengabdian berlangsung baik dan menghasilkan peningkatan pemahaman serta keterampilan mitra dalam mengoperasikan instrumen yang ditunjukkan dengan peningkatan skor tes mitra. Kegiatan ini diharapkan dapat mewujudkan GLP sehingga kegiatan penelitian dilakukan dengan aman dan efisien. Kata kunci: pelatihan; instrumen; good laboratory practise; mahasiswa. ABSTRACTChemical laboratory is one type of laboratory that has a very dangerous risk in the implementation of education, research and/or community service, so the laboratory must be managed and used properly and wisely. Equipment operation as one of the Good Laboratory Practice (GLP) activities is a routine activity carried out in chemical laboratory. GLP could realize work safety in laboratory and minimize instrument operation and maintenance mistake This community service activity was a demonstration of instrumentation of the Analytical Chemistry Laboratory, FMIPA–University of Mataram. The method of activity carried out are training and assistance in form of instrument demo including gas chromatography–mass spectroscopy (GC-MS), high performance liquid chromatography (HPLC or HPLC), atomic absorption spectrometer (SSA or AAS) and infrared spectrometer (FTIR). This activity is carried to improve basic skill of partner in operating of instruments. The activity partners are 20 students of the advanced semester (5-8th semester) in Departement of Chemistry. The success of activity was measured by comparing the partner’s test score before and after the activity was carried out.The service activity went well and could increase the partners' understanding and skills in operating the instrument. This activity is expected to realize the GLP so that research activities are carried out safely and efficiently. Keywords: training; instrument; good laboratory practice; student.
PENYULUHAN KELOMPOK TANI BAYAN TENTANG ASAM HUMAT TERIMOBIL DALAM RUMPUT LAUT SEBAGAI PELENGKAP PUPUK Dhony Hermanto; Nurul Ismillayli; Fahrurazi Fahrurazi; Nurlaela Nurlaela; Ahmad Wirahadi; Ulul Khairi Zuryati; Ruru Honiar; I G. Ayu Sri Andayani; Baiq Mariana
SELAPARANG Jurnal Pengabdian Masyarakat Berkemajuan Vol 4, No 1 (2020): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.013 KB) | DOI: 10.31764/jpmb.v4i1.3316

Abstract

ABSTRAKAsam humat telah diketahui memiliki dampak tidak langsung dalam perbaikan kualitas tanah di lahan kering, akan tetapi harga asam humat dalam jumlah banyak yang relatif tinggi tidak dapat dijangkau oleh petani. Hal ini yang mendorong pemanfaatan teknik modifikasi yang dapat mengurangi jumlah pemakaian asam humat tanpa mengurangi manfaatnya, yaitu dengan mengimobilisasi asam humat pada suatu material pendukung seperti rumput laut. Kegiatan pengabdian ini berupa penyuluhan kepada mitra tentang penerapan asam humat terimobil dalam rumput laut sebagai pelengkap pupuk yang dapat meningkatkan produktivitas tanah sehingga potensi lahan kering sebagai lahan pertanian meningkat. Mitra kegiatan adalah Kelompok Tani jagung “SBP 212” dan UPTD Dinas Pertanian Perkebunan Kelautan Kehutanan dan Perikanan (DPPKKP) Kec. Bayan. UPTD DPPKKP Kec. Bayan juga berperan dalam difusi Ipteks dan sebagai motor penggerak untuk menyebarkan kegiatan kepada anggota kelompok tani sasaran lainnya sehingga kegiatan dapat berkelanjutan. Keberlanjutan kegiatan diharapkan dapat terjaga untuk peningkatan potensi lahan kering sebagai lahan pertanian produktif yang ditandai dengan peningkatan produktivitas tanaman. Kata kunci: penyuluhan; asam humat; rumput laut; pelengkap pupuk; lahan kering. ABSTRACTHumic acid is known to have an indirect impact on improving soil quality in dry land, however, the price of humic acid in large quantities is too expensive for farmers. It was important to use of modified techniques that can reduce the amount of humic acid used without reducing its benefits, namely by immobilizing humic acid in a supporting material such as seaweed. The service activity, counseling to farmer group about application of immobilized humic acid in seaweed as fertilizer complement to increase soil productivity so that dry land as potential agricultural land increases. The partner of the activity is the “SBP 212” Corn Farmer Group and UPTD Department of Agriculture, Plantation, Marine, Forestry and Fisheries (DPPKKP) Kec. Bayan. UPTD DPPKKP Kec. Bayan also plays a role in science and technology diffusion and as mediator to disseminate the activities to other target farmer group members for sustainability of activity. It is expected that the sustainability of activities can be maintained to increase dry land uses as productive agricultural land that indicated by increasing of plant productivity. Keywords: counseling; humic acid; seaweed; fertilizer supplement; dry land.
SOSIALISASI PENGAWASAN KEAMANAN PANGAN SEGAR ASAL TUMBUHAN PADA KELOMPOK TANI DI LOMBOK BARAT Dhony Hermanto; Nurul Ismillayli; Ruru Honiar; Ulul Khairi Zuryati; Baiq Mariana
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 6, No 1 (2022): Maret
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v6i1.7859

Abstract

ABSTRAKKeamanan pangan merupakan kondisi pangan bebas dari cemaran biologis, kimia dan benda lain yang merugikan dan berdampak pada lingkungan dan kesehatan manusia. Residu pestisida sebagai salah satu cemaran kimia pada produk pertanian seperti buah dan sayur perlu diawasi penggunaannya sehingga dampak negatifnya dapat diminimalisir. Kegiatan pengabdian kepada masyarakat dalam bentuk sosialisasi pengawasan keamanan pangan segar asal tumbuhan (PSAT) dilakukan sebagai bentuk tanggung jawab bersama dalam pengawasan keamanan pangan. Kegiatan dilaksanakan bersama Dinas Ketahanan Pangan Kabupaten Lombok Barat dengan mitra sasaran para kelompok tani Lombok Barat sebagai produsen PSAT komoditi lokal. Tujuan dari pengabdian ini adalah untuk meningkatkan pengetahuan masyarakat petani Lombok Barat tentang dampak negatif penggunaan pestisida sehingga petani menggunakan pestisida sesuai dosis dengan penanganan yang tepat. Kegiatan dimulai dengan FGD antara Dinas Ketahanan Pangan Kabupaten Lombok Barat dan pihak Laboratorium Kimia Analitik sebagai mitra dalam pengujian residu pestisida dalam sampel komoditi lokal  sesuai SNI-06-6991-1-2004. Selanjutnya dilakukan ceramah sosialisasi pemaparan materi berikaitan dengan definisi pangan fungsional dan kemanan pangan, PSAT, bahan cemaran pangan dan penanganan pestisida. Hasil kegiatan adalah peningkatan pemahaman mitra yang diindikasikan dengan peningkatan skor test setelah kegiatan dibandingkan dengan sebelum kegiatan sosialisasi dilaksanakan. Kegiatan ini diharapkan menjadi upaya efektif dalam meningkatkan kesadaran masyarakat akan pentingnya keamanan pangan. Kata kunci: sosialisasi; keamanan pangan; pestisida. ABSTRACTFood safety is the condition of food without contamination by biological, chemical and other objects that harm to the environment and human health. Pesticide residue as one of the chemical contaminant in agricultural products such as fruits and vegetables need to be monitored so that its negative impact can be minimized. Community service activitiy namely socialization of food safety supervision of fresh plant origin (PSAT) is carried out as a shared responsibility in food safety supervision. The activity was carried out in collaboration with Dinas Ketahanan Pangan Kabupaten Lombok Barat with target partners of farmer groups as producers of local commodity PSAT in Lombok Barat. The purpose of this service is to increase the knowledge of the farming community about the negative impacts of using pesticides so that farmers use the right dose of pesticides with proper handling. The activity started with a FGD between Dinas Ketahanan Pangan Kabupaten Lombok Barat and the Analytical Chemistry Laboratory as a partner in testing pesticide residues in samples of local commodities according to SNI-06-6991-1-2004. Then, continued with socialization on material exposure related to the definition of functional food and food safety, PSAT, food contaminants and handling of pesticides. The result of the activity is an increase in partner understanding which is indicated by increasing in test scores after the activity compared to before the socialization activity was carried out. This activity is expected to be an effective effort in increasing public awareness of the importance of food safety. Keywords: socialization; food safety; pesticide.
Penggunaan Media Dakon Satuan Panjang Berbantuan Model Make a Match terhadap Hasil Belajar Matematika Siswa Kelas IV di SDN 15 Mataram Ni Luh Arginda Pasmawangi; A. Hari Witono; Baiq Mariana
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 2 (2026): May
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i2.1808

Abstract

This study aimed to improve the mathematics learning outcomes of fourth-grade students at SDN 15 Mataram through the use of a dakon length-unit learning medium combined with the Make a Match learning model. The research employed Classroom Action Research (CAR) conducted in two cycles involving 34 students. Data were collected through learning outcome tests administered in the Pretest phase, Cycle I, and Cycle II, and were analyzed descriptively and quantitatively based on the class average, classical completeness, and N-Gain scores. The findings showed a consistent improvement in students’ achievement from the initial condition to Cycle II. In the Pretest stage, the class average was 65.6 with a classical completeness rate of 35.29%. After the implementation of the action in Cycle I, the average increased to 73.0 with a classical completeness rate of 67.65%, although this had not yet met the success indicator. After reflective improvement in Cycle II, the average score rose significantly to 83.0 and classical completeness reached 91.18%, exceeding the minimum mastery criterion (MMC) of 75. The N-Gain score also increased from 0.21 in Cycle I to 0.51 in Cycle II, indicating a moderate and meaningful improvement in learning outcomes. These results suggest that the use of the dakon length-unit medium integrated with the Make a Match learning model can create a more active, enjoyable, and contextual learning environment, thereby helping students better understand length unit conversion concepts. Therefore, this approach proved effective in significantly improving the mathematics learning outcomes of fourth-grade students.  
Optimization of Cryogenic Grinding as a Hair Sample Preparation Technique for Heavy Metal Concentration Analysis I Gusti Ayu Sri Andayani; Indah Retnowati; Baiq Mariana; N Ismillayli; Ardiana Ekawanti; Rahmah Dara Ayunda
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i2.18503

Abstract

This study aimed to evaluate the effectiveness of cryogenic grinding as a hair sample preparation technique and to compare heavy metal analysis results obtained using Energy Dispersive X-ray (EDX) and Atomic Absorption Spectrophotometry (AAS). Hair samples were collected from five residents of Sekotong and analyzed for Cd, Hg, and Pb content. Data were analyzed descriptively and compared using the Friedman test. The results indicated that AAS consistently yielded higher metal concentrations than EDX. Cd concentrations measured by AAS, EDX of powdered hair, and EDX of intact hair were 0.00656 mg/kg, 0.00130 mg/kg, and 0.00010 mg/kg, respectively. For Hg, the corresponding measurements were 0.00380 mg/kg, 0.00212 mg/kg, and 0.00362 mg/kg, whereas Pb exhibited the largest disparity, with 0.12930 mg/kg for AAS, 0.00224 mg/kg for EDX of powdered hair, and 0.06978 mg/kg for EDX of intact hair. The high variability, particularly in Pb measurements, suggests that heterogeneity in metal distribution and surface contamination affect EDX readings of intact hair. Cryogenic grinding yielded a more homogeneous particle distribution, resulting in EDX measurements of powdered hair that were more representative and numerically closer to AAS results than measurements of intact hair. Although differences were not statistically significant (p > 0.05), these findings support the use of cryogenic grinding to enhance the accuracy of hair-based heavy metal analysis. Furthermore, this method has the potential to reduce the use of destructive chemicals and hazardous waste, making it a safer and more sustainable alternative for community biomonitoring in areas affected by heavy metal contamination.
Co-Authors A. Hari Witono Ahmad Wirahadi Ardiana Ekawanti Dhony Hermanto Fahrurazi Fahrurazi I G. Ayu Sri Andayani I Gusti Ayu Sri Andayani Indah Retnowati N Ismillayli Ni Luh Arginda Pasmawangi Nurlaela Nurlaela Rahmah Dara Ayunda Ruru Honiar Ulul Khairi Zuryati