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EDITOR IN CHIEF Gerald H. Tamuntuan, Universitas Sam Ratulangi, Indonesia MANAGING EDITOR Verna A. Suoth, Universitas Sam Ratulangi, Indonesia BOARD OF EDITOR Audy Wuntu, Fakultas MIPA Univesitas Sam Ratulangi BOARD OF EDITOR Nio Song Ai, Universitas Sam Ratulangi, Indonesia BOARD OF EDITOR Nelson Naingolang, Universitas Sam Ratulangi, Indonesia
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Kota manado,
Sulawesi utara
INDONESIA
Jurnal MIPA
Published by Universitas Sam Ratulangi
ISSN : -     EISSN : 23023899     DOI : https://doi.org/10.35799/jmuo.10.2.2021.33592
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal MIPA menjadi sarana publikasi bagi akademisi dan peneliti. Jurnal MIPA mempublikasikan artikel hasil penelitian di bidang : Matematika Fisika Biologi Kimia
Arjuna Subject : Umum - Umum
Articles 311 Documents
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Variasi Genetik Troides helena (Lepidoptera: Papilionidae) Berdasarkan Gen COI (Cytochrome C Oxydase I) Kairupan, Claudius F.; Koneri, Roni; Tallei, Trina E.
Jurnal MIPA Vol 4, No 2 (2015)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.4.2.2015.9039

Abstract

Kupu-kupu Troides helena (Kupu-kupu Raja) merupakan salah satu spesies langka yang dilindungi. Eksploitasi yang berlebihan, serta alih fungsi hutan menjadi ancaman bagi kehidupan kupu-kupu ini. Penelitian ini dilakukan untuk mengetahui variasi  pada gen cytochrome C oxidase I Troides helena yang diperoleh dari dua lokasi yang berbeda, yaitu Gunung Tumpa dan Gunung Dua-sudara. Analisis sekuens menunjukkan adanya perbedaan satu pasang basa nukleotida dari kedua spesimen tersebut.  Selain itu, variasi juga ditunjukan pada sampel yang diperoleh dari basis data GenBank dengan adanya perbedaan 7-8 pasang basa nukleotida dengan  spesimen pada penelitian ini. Hasil perhitungan jarak genetik menunjukkan bahwa meskipun secara geografis spesimen-spesimen uji ini berasal dari lokasi yang berjauhan, variasi genetik masih berada dalam kisaran variasi intraspesies.Troides helena (Common Birdwing) is listed as one of endangered and protected butterfly species. Excessive exploitation and forest conversion have become threat to the life of this butterfly. This study was conducted to determine the genetic variation of Troides helena obtained from Mt. Tumpa and Mt. Dua-sudara based on cytochrome C oxidase I gene. Sequence analysis shows one nucleotide difference between these two specimens. Moreover, genetic variation also has been shown by comparing these two specimen with other Troides helena obtained from database in GenBank. There are 7-8 nucleotides differences among tested specimens. The result of genetic distance calculations indicates that although geographically these test specimens derived from remote locations, the genetic variation is still within the range of intraspecific variation.
Keanekaragaman Amphibi Di Areal Persawahan Kota Tondano Kabupaten Minahasa Provinsi Sulawesi Utara Kares, Yohaneta; Katili, Deidy Y.; Langoy, Marnix L.
Jurnal MIPA Vol 8, No 3 (2019)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jmuo.8.3.2019.26158

Abstract

Persawahan merupakan habitat yang baik bagi kehidupan amphibi. Amphibi memiliki fungsi ekologis sebagai penyeimbang ekosistem dan sebagai bioindikator lingkungan. Penilitian ini bertujuan untuk menganalisis keanekaragaman amphibi di areal persawahan Boleuvard Kota Tondano berdasarkan nilai indeks Shannon-Wiener. Penelitian ini menggunakan metode Line Transect yang dilaksanakan pada bulan Januari-Desember 2018. Nilai indeks keanekaragaman Shannon-Wiener pada transek satu H’ 0,782, transek dua H’1,208 dan transek tiga H’ 1,139. Berdasarkanhasilpenelitianterdapat lima  spesies yang ditemukanya itu Bufo melanostictus, Rana cancrifora, Rana chalconota, Fejevarya limnocharis, dan Hylarana nicobariensis. Berdasarkan kategori indeks Shannon-wiener keanekaragaman amphibi di areal persawahan Tondano termasuk dalam kategori sedangRice fields are good habitat for amphibian life. Amphibians have an ecological function as a counterweight to ecosystems and as an environmental bioindicator. This research tries to analyze the amphibians in the Boleuvard rice field area of Tondano City based on the Shannon-Wiener index value. This study uses the Path Transect method which was carried out in January - December 2018. The index value of the Shannon-Wiener contribution to habitatone H '0,782, habitat two H'1,208 and habitat three H' 1,139. Based on the results of the study found five species found, namely Bufo melanostictus, Rana cancrifora, Rana chalconota, Fejevarya limnocharis, and Hylarana nicobariensis. Based on the Shannon-wiener index category the various amphibians in the Tondano rice field area are included in the medium category
Karakteristik Kualitas Pengajar Berdasarkan Faktor Mutu Pelayanan di Jurusan Matematika FMIPA UNSRAT Menggunakan Analisis Biplot Gobel, Trisnawaty V.; Hatidja, Djoni; Komalig, Hanny
Jurnal MIPA Vol 2, No 1 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.2.1.2013.762

Abstract

Tujuan penelitian ini adalah mendeskripsikan faktor penentu mutu pelayanan tenaga pengajar di Jurusan Matematika FMIPA UNSRAT menggunakan analasis biplot. Data yang digunakan adalah data primer yang diperoleh dari 377 peserta 28 matakuliah untuk 18 dosen (DS1, DS2, DS3, DS4, DS5, DS6, DS7, DS8, DS9, DS10, DS11, DS12, DS13, DS14, DS15, DS16, DS17, DS18) pada semester genap TA 2011/2012. Data diambil pada Bulan Mei di Jurusan Matematika FMIPA UNSRAT. Hasilnya menunjukkan bahwa dosen-dosen yang dikategorikan memiliki mutu yang relatif sama unggul terhadap faktor mutu pelayanan adalah DS1, DS2, DS3, DS4, DS6, DS11, dan DS12. Objek-objek yang memiliki mutu yang relatif sama tidak unggul terhadap faktor mutu pelayanan adalah DS5, DS7, DS8, DS9, DS10, DS13, DS14, DS15, DS16, DS17 dan DS18.The objective of this research was describe service quality factor of lectures at department of mathematics FMIPA UNSRAT using biplot analysis. The data used primary data collected from 377 students of 28 subjects for 18 lecturers (DS1, DS2, DS3, DS4, DS5, DS6, DS7, DS8, DS9, DS10, DS11, DS12, DS13, DS14, DS15, DS16, DS17, DS18) in the second semester 2011/2012. Data were taken in May at department of mathematics FMIPA UNSRAT. The results showed that lecturer who categorized relatively superior quality to service quality factors are DS1, DS2, DS3, DS4, DS6, DS11 and DS12. Then the lecturer who categorized relatively not superior quality to service quality factors are DS5, DS7, DS8, DS9, DS10, DS13, DS14, DS15, DS16, DS17 and DS18.
Rancang Bangun Oksimeter Pulsa yang Diintegrasikan dengan EKG sebagai Alat Ukur Multimodal untuk Analisis HRV Pang, David; Kolibu, Hesky Stevy
Jurnal MIPA Vol 11, No 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i1.39058

Abstract

Analisis variabilitas denyut jantung (HRV) berdurasi panjang berguna sebagai teknik noninvasif untuk asesmen terhadap aktivitas sistem saraf otonom. Analisis Ini menginformasikan banyak faktor fisiologis dan patologis yang memodulasi detak jantung normal. Namun performa sistem analisis HRV sangat bergantung pada keakurasian pendeteksian R-peak dari QRS complex. Detak yang disebabkan oleh kesalahan deteksi dapat menggangu hasil HRV, yang mengakibatkan masalah signifikan dalam interpretasinya. Terutama sifatnya yang berdurasi panjang, maka diperlukan sistem deteksi R-peak yang andal. Penelitian ini bertujuan membangun sistem akuisisi data multimodal dari data EKG dan data pulsa SPO2 untuk mendapatkan hasil deteksi R-peak yang lebih reliabel dibanding dengan hanya menggunakan data EKG saja. Namun demikian, hasil akhir sistem keseluruhan ditentukan oleh metode pendeteksian yang nantinya digunakan .
Simulasi Optimasi Suhu dari Sistem Pemanasan Temperatur Tinggi Berbasis Gelombang Mikro Sagai, Fingken Stevanus; Pandara, Dolfie Paulus; Kolibu, Hesky Stevy; Tongkukut, Seni Herlina Juita; Ferdy, Ferdy; Tamuntuan, Gerald Hendrik; Abidjulu, Gilbert
Jurnal MIPA Vol 11, No 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i1.36151

Abstract

Telah dilakukan penelitian simulasi untuk menganalisis pengaruh variasi dimensi geometri tungku, daya oven gelombang mikro dan waktu pemanasan terhadap suhu tungku, dan mengoptimasi suhu tungku dalam pemanasan dengan gelombang mikro dari variasi parameter yang digunakan. Tungku kubus dengan panjang sisinya dan tungku silinder dengan diameter dan tingginya masing-masing memiliki ukuran yang sama yaitu 50 mm untuk tipe I, 70 mm untuk tipe II dan 90 mm untuk tipe III, yang terbuat dari material SiC dipanaskan dalam oven gelombang mikro pada daya 100%, 75% dan 50% dari daya maksimum 1,3 kW. Pemanasan tungku ini disimulasikan menggunakan perangkat lunak COMSOL Multiphysics. Hasil simulasi dari setiap parameter dilakukan analisis dan optimasi untuk mencapai suhu optimum 500oC dalam waktu yang singkat dengan konsumsi energinya yang rendah. Hasil simulasi yang diperoleh menunjukkan bahwa variasi parameter memengaruhi suhu yang dihasilkan tungku dan distribusi suhu di dalam tungku. Optimasi pada tungku kubus tipe II (ukuran 70 mm) yang dipanaskan dalam oven gelombang mikro dengan daya 1,3 kW (100%) mencapai suhu optimum 500oC dalam waktu relatif singkat sebesar 7 menit 33 detik (453 detik) dan konsumsi energi relatif rendah sebesar 5,889 × 105 J.Simulation research has been conducted to analyze the effect of variations in the dimensions of the furnace geometry, microwave oven power, and heating time on the furnace temperature, and optimize the furnace temperature in microwave heating from a variety of parameters used. The cube furnace with side length and cylindrical furnace with diameter and height respectively have the same size, namely 50 mm for type I, 70 mm for type II, and 90 mm for type III, which are made of SiC material heated in a microwave oven at power 100%, 75% and 50% of the maximum power of 1,3 kW. The heating of this furnace was simulated using COMSOL Multiphysics software. The simulation results for each parameter are analyzed and optimized to achieve the optimum furnace temperature of 500oC in a short time with low energy consumption. The simulation results obtained show that the parameter variations affect the temperature produced by the furnace and the temperature distribution in the furnace. Optimization of the type II cube furnace (size 70 mm) heated in a microwave oven with a power of 1,3 kW (100%) reaches the optimum temperature of 500oC in a relatively short time of 7 minutes 33 seconds (453 seconds) and relatively low energy consumption of 5,889 × 105 J.
Uji Aktivitas UV Protektif Secara In Vivo pada Krim dari Bahan Aktif Cangkang Telur Ayam Ras Menggunakan Hewan Coba Kelinci Betina Usman, Yusnita; Muin, Rahmatullah
Jurnal MIPA Vol 11, No 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i1.36911

Abstract

Previously, an in vitro study of the SPF value of a cream formulation with active ingredients from broiler eggshells was conducted using UV-vis spectrophotometry at a wavelength of 290-320 nm and obtained an SPF value of 8.335 at a concentration of 9000 ppm. This study aims to continue testing the UV protective activity in vivo on creams from these active ingredients with combination of adding 5% titanium dioxide. The experimental animals used consisted of 12 female rabbits divided into 4 groups, namely (1) positive control: market product spf 15, (2) Negative control: cream base, (3) Formula I: (15% egg shell), and (4 ) Formula II: (a combination of 15% eggshell and 5% titanium dioxide). The activity test was carried out by determining (SPF) against UV-B rays in vivo in 4 groups of experimental animals by comparing the Minimum Erythema Dose (MED) value on protected skin with those not protected by sunscreen. The test results were then analyzed based on the category of sunscreen uv protection. The results showed the SPF value of Group 1; 2; 3 and 4 respectively 15.3; 0 ; 8.55 and 12.37. Group 4 has the same activity as group 1 and has better activity than group 3.
Pengaruh Pemberian Sari Buah Salak (Salacca zalacca) terhadap Profil lipid dan Berat Badan Tikus Model Hiperlipidemia dan Obesitasda Datu, Olvie Syenni; Lebang, Julianri Sari; Rumondor, Erladys Melindah
Jurnal MIPA Vol 11, No 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i1.36530

Abstract

Cardiovaskular disease is the number one cause of death in the world, an estimated 17.9 million people die each year. Several risk factors that contribute to the occurrence of heart disease such as hypertension, diabetes mellitus, hyperlipidemia, and obesity. Snake Fruit is a fruit that is available in large quantities both in volume and variety. Snake Fruit is rich in antioxidants that can be used to treat hyperlipidemia and overweight. North Sulawesi is one of the centers of Snake Fruit production, especially in the southeast Minahasa area. This study aimed to test the effectiveness of Snake Fruit juice on the lipid profile of hyperlipidemic and obese rats induced by a high-fat diet in the form of used cooking oil, quail egg yolk and 0.01% PTU solution. The study used 5 groups, namely the negative control group was given aquadest, the positive control group was given simvastatin and the treatment group was given Snake Fruit juice with concentrations of 2%, 4% and 8%. The parameters observed in this study were body weight, lipid profile, and glucose profile. blood. The study showed that the administration of Snake Fruit juice had a significant effect on the lipid profile of rats for all parameters on the lipid profile and had a significant effect on weight loss and blood glucose levels where p < 0.05 and there was no significant difference between each treatment group in both lipid profile parameters. , body weight and blood glucose levels.
Persepsi Kelompok Pemandu Wisata Terhadap Konservasi Penyu di Pesisir Pulau Bunaken, Taman Nasional Bunaken, Manado, Sulawesi Utara Rumbay, Julia Angel; Koneri, Roni; Langoy, Marnix; Handoyo, Eko; Wijaya, Pandu
Jurnal MIPA Vol 11, No 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i1.38902

Abstract

Public perception of turtle conservation in an area will determine the success of turtle conservation activities. This study aims to analyze the perception of tour guide groups towards turtle conservation on the coast of Bunaken Island, Bunaken National Park, Manado, North Sulawesi. The research method was carried out by means of observation and surveys. Collecting data in the form of interviews with a questionnaire guide. The selection of respondents was carried out by purposive sampling with the target group of tour guides, especially dive guides. Data analysis was carried out using a qualitative descriptive method. The results showed that most of the respondents (78%) already understand about turtle conservation and no longer consume turtles (100%). The turtle habitat which includes coral reefs and seagrasses still supports the presence of turtles and turtles are almost visible at all observation locations. The understanding of turtle conservation by dive guides is quite good, but to maintain the sustainability of conservation so that it is maximized, it is necessary to provide guidance and supervision to the diving guides and also to the surrounding community.
Perbandingan Aktivitas Antioksidan Bahan Alami Dan Bahan Sintetis (Study Pada Kayu Secang dan Vitamin C) Ulfa Nurullita; Estri Irawati
Jurnal MIPA Vol. 11 No. 2 (2022)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v11i2.40089

Abstract

Berbagai faktor di lingkungan berkontribusi besar dalam pembentukan radikal bebas di mana paparan yang terus menerus akan mengakibatkan stress oksidatif. Radikal bebas dan stress oksidatif dapat dicegah dan dihambat dengan antioksidan. Salah satu bahan yang berpotensi, mudah ditemukan dan mempunyai harga terjangkau  adalah kayu secang (Caesalpinia sappan L). Senyawa antioksidan berhubungan sangat erat dengan lingkungan tempat tumbuh. Perlu dilakukan penelitian untuk mengidentifikasi senyawa flavonoid ­dan aktivitas antioksidan Kayu Secang yang berasal dari tempat tumbuh lain yang berbeda. Jenis penelitian ini adalah deskriptif dengan pendekatan analisis laboratorium. Tahapan penelitian meliputi persiapan bahan tanaman, ekstraksi dengan metode maserasi, identifikasi flavonoid dengan uji mikrokimiawi (uji warna), uji kadar flavonoid dengan metode spektrofotometri ultraviolet-cahaya tampak/UV-Vis, dan uji aktivitas antioksidan dengan metode DPPH. Hasil penelitian menunjukkan ekstrak etanol kayu secang mengandung flavonoid yang ditandai dengan adanya warna jingga, kadar flavonoid total 0.1136 mg EQ/ ml,  dan memiliki aktivitas antioksidan (IC50) sebesar 56.32  µg/mL. IC50 vitamin C sebesar 10.69 µg/mL. Dari hasil penelitian ini disimpulkan ekstrak etanol kayu secang dari Kabupaten Situbondo berpotensi sebagai sumber antioksidan alami yang mengandung flavonoid dengan  kadar 0.1136 mg EQ/ ml, lebih rendah dibanding vitamin C. Namun aktivitas antioksidan ekstrak etanol kayu secang tergolong dalam katagori kuat
Identifikasi Karakteristik Bio-Fisik Habitat Peneluran Penyu di Pulau Bunaken – Taman Nasional Bunaken Kezia Melania Clara Tiwa; Sendy Beatrix Rondonuwu; Hanry Jefry Lengkong; Eko Wahyu Handoyo
Jurnal MIPA Vol. 12 No. 1 (2023)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.v12i1.43003

Abstract

Bunaken Island is one of the islands in Manado City, North Sulawesi Province which is one of the turtle nesting areas and has been designated as a Bunaken National Park Conservation Area. Turtles are protected animals based on Government Regulation No. 7 of 1999 concerning the preservation of plant and animal species and Government Regulation No. 8 of 1999 concerning the use of wild plant and animal species. Beach characteristics are an option for turtles in determining nesting locations. Research on the bio-physical characteristics of turtle nesting habitats on Bunaken Island for conservation efforts so that the conditions of turtle nesting habitats are maintained. The method used in this research is descriptive exploratory method. With bio-physical parameters consisting of measurements of beach width, temperature, humidity, sand texture, beach slope, coastal vegetation and the presence of predators. The results showed that stations 1 and 3 correspond to turtle nesting habitats with an evaluation value obtained of 100%. As for station 2 with an evaluation value of 73.33%, which means it is quite appropriate and the station has a limit that can be tolerated. 

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