Media Eksakta
Not a member yet
136 research outputs found
Sort by
Analisis Jenis dan Kandungan Makanan Oreochromis mossambicus dan Oreochromis nilotica asal Danau Lindu
Full text linkThe purpose of this study was to describe the type and content of food for Mujair and tilapia fish from Lake Lindu by means of a section and taking gastric contents and observing and analyzing them. The stages of the research were fish sampling, surgery (section), research in the laboratory and testing the nutritional content of food (carbohydrates, protein and fat). The research samples were Mujair fish (Oreochromis mossambicus) and Tilapia (Oreochromis nilotica) from Lake Lindu. Based on research obtained by the types of fish food O. mossambicus obtained two groups of Phytoplankton namely, Oedogonium sp, Anabaena sp, Nostoc sp, Oscillatoria princeps, Diatomae sp, Navicula gysingen, Rivularia sp, Coelastrum sphaericum, and Zooplankton namely Chironomus sp, Dugesia tigrina. There were eight types of food for O. nilotica, consisting of six types of phytoplankton, namely Oedogonium sp, Anabaena sp, Nostoc sp, Oscillatoria princeps, Rivularia sp, Coelastrum sphaericum and 2 types of zooplankton feed, namely Chironomus sp and Dugesia tigrina. The nutritional content of fish food/feed is protein (15.18%), fat (19.20%), and carbohydrates (1.9%).The purpose of this study was to describe the type and content of food for Mujair and tilapia fish from Lake Lindu by means of a section and taking gastric contents and observing and analyzing them. The stages of the research were fish sampling, surgery (section), research in the laboratory and testing the nutritional content of food (carbohydrates, protein and fat). The research samples were Mujair fish (Oreochromis mossambicus) and Tilapia (Oreochromis nilotica) from Lake Lindu. Based on research obtained by the types of fish food O. mossambicus obtained two groups of Phytoplankton namely, Oedogonium sp, Anabaena sp, Nostoc sp, Oscillatoria princeps, Diatomae sp, Navicula gysingen, Rivularia sp, Coelastrum sphaericum, and Zooplankton namely Chironomus sp, Dugesia tigrina. There were eight types of food for O. nilotica, consisting of six types of phytoplankton, namely Oedogonium sp, Anabaena sp, Nostoc sp, Oscillatoria princeps, Rivularia sp, Coelastrum sphaericum and 2 types of zooplankton feed, namely Chironomus sp and Dugesia tigrina. The nutritional content of fish food/feed is protein (15.18%), fat (19.20%), and carbohydrates (1.9%)
The Effect of Guided Inquiry Model with Active-Reflective Dimensional Learning Style on High School Students’ Chemistry Learning Outcomes
Full text linkThe mean values of MAN 2 Palu students on the topic of reaction rates in the last three years are low. The cause of low learning outcomes is learning that has not paid attention to students’ average learning styles. The learning model used in this study is a guided inquiry model with an active dimensional learning style. The research sample selection technique was purposive sampling by taking into account the average student learning outcomes. The research samples were 27 students in class XI MIA6 as an experimental class, learning with the model and class XI MIA4 with 27 students as a class, learning with a guided inquiry control model. The stages of the research were identifying students' learning styles in the experimental class, applying the ITG-Dia model in chemistry learning by observing attitudes and skills activities and ending with giving an evaluation. The results of the learning style assistance were obtained by 8 students with an active dimension style which were then distributed to each group before learning was carried out. The results of the experimental class research obtained an average altitude of 84.26 (very good); skills of 79.42 (good); learning outcomes of 83; n-gain of 0.78 (high). Control class observations obtained an average altitude of 85.93 (very good); skills 79,79,56 (good); learning outcomes 60.78; n-gain 0.50 (medium). The results of the t-test statistical analysis obtained t 13.12 and t 1.67. The results of the statistical analysis showed that there were significant differences in student learning in the experimental class and the control class. Based on statistical analysis, it can be concluded that the application of the active-reflective dimensional model affects increases students' chemistry learning outcomes
Penentuan Kadar Besi dan Kesadahan pada Sumber Air di Kelurahan Besusu Tengah Kecamatan Palu Timur
Full text linkThis study aims to determine whether the analyzed clean water meets the quality standard requirements set by PERMENKES RI No. 492 of 2010. The parameters measured in this study were pH, odor, temperature, color (in-situ testing) as well as iron and hardness which were tested ex-situ using Atomic Absorption Spectrophotometry and Complexometric Titration. The results of this study are the springs on the S. Parman road for the parameters of pH, color, hardness, and iron, respectively 8.26 pH; colorless; 120 mg/L; and 0.129 mg/L, where the results met the requirements but for the odor (fishy) and temperature (36oC) parameters did not meet the quality standards. Meanwhile, the water sources in the Besusu Tengah Village, which existed before the earthquake in Palu City, had met the requirements set by the governmentPenelitian ini bertujuan untuk mengetahui apakah air bersih yang dianalisis memenuhi syarat baku mutu yang telah ditetapkan PERMENKES RI No. 492 tahun 2010. Parameter yang diukur pada penelitian ini adalah pH, bau, suhu, warna (pengujian in-situ) serta besi dan kesadahan yang diuji secara eks-situ menggunakan Spektrofotometri Serapan Atom dan Titrasi Kompleksometri. Hasil penelitian ini yaitu sumber mata air di jalan S.Parman untuk parameter pH, warna, kesadahaan, dan besi berturut-turut 8,26; tidak berwarna; 120 mg/L; dan 0,129 mg/L, dimana hasil tersebut telah memenuhi syarat tetapi untuk parameter bau (amis) dan suhu (36oC) tidak memenuhi standar kualitas. Sedangkan untuk sumber air di Kelurahan Besusu Tengah yang sudah ada sebelum terjadi Gempa Bumi di Kota Palu telah memenuhi syarat yang diatur pemerintah
Analisis Hubungan Kemandirian Belajar Dan Sikap Kreatif Siswa Terhadap Hasil Belajar Dalam Pembelajaran Kimia Kelas X Di SMA Negeri 6 Palu
Full text linkThis study aims to describe the description of learning independence, students' creative attitudes, and the relationship between learning independence and students' creative attitudes towards learning outcomes in class X chemistry learning at SMA Negeri 6 Palu. This research was conducted from April to June 2021. The research method used was descriptive research. The sampling technique is purposive sampling. The population in this study were all students of class X with a total of 90 students, the samples used were students of class X IPA 2 SMA Negeri 6 Palu in the academic year 2020/2021 as many as 30 students. The research instrument used in this study was a learning independence questionnaire and a creative attitude questionnaire compiled using a Likert scale, and using MID learning outcomes in semester 2 of chemistry class X IPA 2. Based on the results of the study, there were 3 categories of descriptions of independent learning and creative attitudes students are high, medium and low. The results of the calculation of the correlation coefficient between learning independence and student learning outcomes are low (rcount) 0.260. The relationship between creative attitudes towards student learning outcomes is moderate (rcount) 0.457 at the moderate level. Based on these data, it can be concluded that the creative attitude of students to support learning success is more positive than student learning independence. The results of this study are expected to be a source of information regarding the relationship between learning independence and students' creative attitudes towards learning outcomesPenelitian ini bertujuan mendeskripsikan gambaran kemandirian belajar, sikap kreatif siswa serta hubungan kemandirian belajar dan sikap kreatif siswa terhadap hasil belajar dalam pembelajaran kimia kelas X di SMA Negeri 6 Palu. Penelitian ini dilaksanakan pada bulan April - Juni 2021. Metode penelitian yang digunakan adalah penelitian deskriptif. Teknik pengambilan sampel adalah purposive sampling. Populasi dalam penelitian ini yaitu seluruh siswa kelas X dengan jumlah siswa 90 orang, sampel yang digunakan yaitu siswa kelas X IPA 2 SMA Negeri 6 Palu tahun ajaran 2020/2021 sebanyak 30 siswa. Instrumen penelitian yang digunakan pada penelitian ini yaitu angket kemandirian belajar dan angket sikap kreatif yang di susun menggunakan skala likert, serta menggunakan nilai hasil belajar MID semester 2 mata pelajaran kimia kelas X IPA 2 tahun ajaran 2020/2021. Berdasarkan hasil penelitian terdapat 3 kategori gambaran kemandirian belajar dan sikap kreatif siswa yaitu tinggi, sedang dan rendah. Hasil perhitungan koefisien korelasi antara kemandirian belajar tehadap hasil belajar siswa yaitu rendah (rhitung) 0,260. Hubungan antara sikap kreatif terhadap hasil belajar siswa yaitu sedang (rhitung) 0,457. Berdasarkan data-data tersebut dapat disimpulkan bahwa sikap kreatif siswa memberikan dukungan keberhasilan belajar lebih positif dari pada kemandirian belajar siswa. Hasil penelitian ini diharapkan mampu menjadi sumber informasi mengenai hubungan kemandirian belajar dan sikap kreatif siswa terhadap hasil belajar
Profil Penyelesaian Soal Operasi Hitung Perkalian dan Pembagian Bentuk Aljabar Siswa SMP Negeri 18 Model SPMI Palu
Full text linkThe purpose of this study is to describe the completion of arithmetic operations, multiplication and division of algebraic forms for students of SMP Negeri 18 SPMI Palu. This type of research is qualitative research. The subjects in this study were 2 students taken from 32 grade VIIA students of SMP Negeri 18 Model SPMI Palu. The results of this study indicate that the completion of students with high mathematical abilities in solving arithmetic operations problems of multiplication and division of algebraic forms, namely: (1) ST writes the given problem, changes the problem using distributive properties so that the results are obtained. But on the results of the ST distributive property, they did not write down the number sign because they forgot to write it down. Then perform multiplication operations, add up similar terms and get the final result, (2) ST writes down the questions given, performs tiered division operations so that the results are obtained. Completion of students with low mathematical ability in solving arithmetic operations problems of multiplication and division of algebraic forms, namely: (1) SR rewrites the given questions, grouping similar terms, operating like terms so that the results are obtained. However, SR incorrectly determines the result of an integer operation. This is due to SR's inaccuracy when operating, (2) SR wrote questions, did not perform tiered division operations so that the results were obtained.Tujuan dari penelitian ini yaitu: mendeskripsikan penyelesaian soal operasi hitung perkalian dan pembagian bentuk aljabar siswa SMP Negeri 18 Model SPMI Palu. Jenis penelitian ini adalah penelitian kualitatif. Subjek dalam penelitian ini adalah 2 siswa yang diambil dari 32 siswa kelas VIIA SMP Negeri 18 Model SPMI Palu. Hasil penelitian ini menunjukkan bahwa penyelesaian siswa berkemampuan matematika tinggi dalam menyelesaikan soal operasi hitung perkalian dan pembagian bentuk aljabar yaitu: (1) ST menuliskan soal yang diberikan, mengubah soal menggunakan sifat distributif sehingga diperoleh hasilnya. Tetapi pada hasil sifat distributif ST tidak menuliskan tanda bilangan dikarenakan lupa menuliskannya. Kemudian melakukan operasi perkalian, menjumlahkan suku-suku yang sejenis dan diperoleh hasil akhirnya, (2) ST menuliskan soal yang diberikan, melakukan operasi pembagian bersusun sehingga diperoleh hasilnya. Penyelesaian siswa berkemampuan matematika rendah dalam menyelesaikan soal operasi hitung perkalian dan pembagian bentuk aljabar yaitu: (1) SR menuliskan kembali soal yang diberikan, mengelompokkan suku sejenis, mengoperasikan suku sejenis sehingga diperoleh hasilnya. Namun SR salah menentukan hasil operasi bilangan bulat. Hal ini disebabkan karena ketidaktelitian SR ketika mengoperasikan, (2) SR menuliskan soal, tidak melakukan operasi pembagian bersusun sehingga diperoleh hasilnya
Analisis Kadar Senyawa Flavonoid pada Daun Bawang Hutan (Eleutherine palmifolia (L.) Merr.)
Full text linkForest onion (Eleutherine palmifolia (L.) Merr.) is one of the plants commonly used by the community as traditional medicine. This plant can cure diseases such as diabetes mellitus, hypertension, prevent stroke and can lower cholesterol. Forest onions are known to contain compounds such as flavonoids, phenolics, tannins, and saponins. This study aims to determine the levels of flavonoid compounds in forest leek extract. Samples were extracted using maceration method with 70% ethanol as solvent. Determination of flavonoid levels using a UV-VIS spectrophotometer at a wavelength of 432.5 nm and using quercetin as a comparison (QE). The results of this study showed the levels of flavonoid compounds in forest leeks were 27.203 mg/100g±0,348.Forest onion (Eleutherine palmifolia (L.) Merr.) is one of the plants commonly used by the community as traditional medicine. This plant can cure diseases such as diabetes mellitus, hypertension, prevent stroke and can lower cholesterol. Forest onions are known to contain compounds such as flavonoids, phenolics, tannins, and saponins. This study aims to determine the levels of flavonoid compounds in forest leek extract. Samples were extracted using maceration method with 70% ethanol as solvent. Determination of flavonoid levels using a UV-VIS spectrophotometer at a wavelength of 432.5 nm and using quercetin as a comparison (QE). The results of this study showed the levels of flavonoid compounds in forest leeks were 27.203 mg/100g±0,348
Analisis Kadar Protein pada Tulang Sapi dari Limbah Kaledo Asal Kota Palu Sulawesi Tengah
Full text linkKaledo (donggala ox leg) is one of the famous culinary in Central Sulawesi. The number of restaurants that provide kaledo menus causes problems, due to the lack of utilization of the bone waste, causing problems in the environment. People still don't know that beef bones still contain protein. Protein serves as a form of new tissue during the growth and development of the body. This study aims to determine the protein content of beef bones from kaleo waste from the city of Palu, Central Sulawesi, which was taken randomly from a kaledo restaurant. Determination of protein content in beef bones from kale waste using the Kjeldhal method. In the results of calculations that have been carried out with three repetitions, it was found that the protein content in Repetition1 was 3.85%, Repetition2 was 3.59% and Repetition3 was 4.2%. The average protein content of beef bones from kale waste is 3.88%. The results of this study are expected to be a source of information about the protein content contained in beef bones from kaleo waste and can be used further as a substance in the utilization of bone waste.Kaledo (kaki lembu donggala) adalah salah satu kuliner yang terkenal di Sulawesi Tengah. Banyaknya rumah makan yang menyediakan menu kaledo menimbulkan permasalahan, karena kurangnya pemanfaatan pada limbah tulang tersebut sehingga menyebabkan permasalahan pada lingkungan. Masyarakat masih belum mengetahui bahwa tulang sapi masih mengandung protein. Protein berfungsi sebagai pembentuk jaringan baru dimasa pertumbuhan dan perkembangan tubuh. Penelitian ini bertujuan untuk menentukan kadar protein pada tulang sapi dari limbah kaledo asal kota Palu Sulawesi Tengah yang diambil secara acak dari rumah makan kaledo. Penentuan kadar protein pada tulang sapi dari limbah kaledo menggunakan metode Kjeldhal. Pada hasil perhitungan yang telah dilakukan dengan tiga kali pengulangan diperoleh bahwa kadar protein pada Pengulangan1 3,85%, Pengulangan2 3,59% dan Pengulangan3 4,2%. Kandungan protein rata – rata tulang sapi dari limbah kaledo sebesar 3,88 %. Hasil penelitian ini diharapkan dapat menjadi sumber informasi tentang kadar protein yang terkandung dalam tulang sapi dari limbah kaledo dan dapat digunakan lebih lanjut sebagai subtansi dalam pemanfaatan limbah tulang
Analisis Kadar Steroid pada Buah, Tepung dan Biskuit Labu Siam (Sechium edule)
Full text linkSteroids are secondary metabolites, steroid compounds can be used as antioxidant and anti-cancer compounds.This study aims to determine the levels of steroids in fruit, flour and chayote biscuits using the maceration extraction method, the determination of levels using a UV-Vis spectrophotometer. The results showed that the steroid levels in each sample were 0.235±0.03 gram/100 g, on chayote flour by 0.435±0.02 gram/100 g, and on chayote biscuits by 0.556±0.04 gram/100 g.Steroid merupakan senyawa metabolit sekunder, senyawa steroid dapat digunakan sebagai senyawa antioksidan dan anti kanker. Penelitian ini bertujuan untuk menentukan kadar steroid pada buah, tepung dan biskuit labu siam menggunakan metode ekstraksi maserasi, penentuan kadar menggunakan alat spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa adanya kadar steroid pada masing-masing sampel yaitu pada buah labu siam sebesar 0.235±0.03 gram/100 g, pada tepung labu siam sebesar 0.435±0.02 gram/100 g, dan pada biskuit labu siam sebesar 0.556±0.04 gram/100 g
Efektivitas Pembelajaran Daring Terhadap Motivasi dan Hasil Belajar Siswa pada Mata Pelajaran Kimia
Full text linkThis Study aims to analyze and describe the effectiveness of Online Learning during the Covid-19 Pandemic on Motivation and learning outcomes of Students’ SMA Negeri 1 Ampibabo. The Research Method used was Descriptive Quantitative Research. The Subjects of this study consisted of 2 teachers and 171 students. The data collection instruments used were assessment data, interview texts and learning motivation questionnaires. Based on the research and analyze of interviews showed that online learning during Covid-19 pandemic is still less effective in improving Students’ learning than face-to-face learning. It was shown in the average value of learning outcomes before the pandemic (226.23) which was higher than the average value of learning outcomes during the pandemic (117.77). in addition, it was also found that level of students’ motivation toward online learning was in the positive category with a doubtful attitude, namely 67,34%. The students need to be accustomed to accessing the internet a lot, especially on online learning applications so that students can be trained to use applications when learning so, online learning process becomes effective during the Covid-19 pandemic.Penelitian ini bertujuan untuk menganalisis dan mendeskripsikan efektivitas pembelajaran daring pada masa pandemi Covid-19 terhadap motivasi dan hasil belajar siswa SMA Negeri 1 Ampibabo. Metode penelitian yang digunakan adalah penelitian deskriptif- kuantitatif. Subjek penelitian ini terdiri dari 2 guru dan 171 siswa. Instrument pengumpulan data yang digunakan adalah data hasil penilaian, teks wawancara dan angket motivasi belajar. Berdasarkan hasil penelitian dan analisis data wawancara menunjukan bahwa pembelajaran daring yang dilakukan pada masa pandemi covid-19 masih kurang efektif dalam meningkatkan hasil belajar siswa bila dibandingkan dengan pembelajaran tatap muka. Hal ini ditunjukkan pada nilai rata-rata hasil belajar sebelum pandemi (226,23) lebih tinggi dari nilai rata-rata hasil belajar dimasa pandemi (116,77) yang menerapkan pembelajaran daring. Selain itu juga didapatkan tingkat motivasi siswa terhadap pembelajaran daring berada pada kategori positif dengan sikap ragu-ragu yaitu 67,34%. Siswa perlu dibiasakan untuk banyak mengakses internet terutama pada aplikasi-aplikasi pembelajaran daring agar siswa dapat terlatih menggunakan aplikasi saat pembelajaran sehingga proses pembelajaran daring menjadi efektif untuk dilaksanakan di masa pandemic covid19 in
Tingkat Kesadahan dan Uji Derajat Keasaman (pH) pada Air Tanah di Desa Mapane Tambu Kecamatan Balaesang Kabupaten Donggala
Full text linkResearch has been carried out on the level of hardness and the degree of acidity (pH) in groundwater in Mapane Tambu Village, Balaesang District, Donggala Regency. The purpose of this study was to determine the concentration of the water hardness level and the degree of acidity of the water, complexometric method was used to determine the level of water hardness using three samples and obtained the results of sample A 15.61 mg/L; sample B 9.40 mg/L and sample C 19.22 mg/L, with a total hardness level obtained an average value of 14.74 mg/L classified in the low hardness category. Then the degree of acidity (pH) was measured using the electrometric method with a (pH) meter with three variations of sample results and the results obtained were sample A 7.713; sample B 8,511; sample C 6.916. The determination of the degree of acidity (pH) of the water obtained in the three samples was in accordance with the regulation of PERMENKES Number 492/Menkes/Per/IV/2010 concerning the quality of clean water which was in the pH range of 6.5 - 6.8Telah dilakukan Penelitian Tingkat Kesadahahan dan Uji Derajat Keasaman (pH) pada Air Tanah di Desa Mapane Tambu Kecamatan Balaesang Kabupaten Donggala. Tujuan penelitian ini adalah untuk menentukan kosentrasi tingkat kesadahan air dan derajat keasaman air, metode kompleksometri digunakan untuk mengetahui tingkat kesadahan air dengan menggukan tiga sampel dan diperoleh hasil sampel A 15,61 mg/L; sampel B 9,40 mg/L dan sampel C 19,22 mg/L, dengan tingkat kesadahan total yang diperoleh nilai rata-rata sebesar 14,74 mg/L diklasifikasikan dalam kategori kesadahan rendah. Kemudian derajat keasaman (pH) diukur menguunakan metode Elektrometri dengan alat (pH) meter dengan tiga variasi sampel hasil dan diperoleh hasil sampel A 7,713; sampel B 8,511; sampel C 6,916. Penentuan derajat keasaman (pH) air yang diperoleh pada tiga sampel sesuai dengan aturan PERMENKES Nomor 492/Menkes/Per/IV/2010 tentang kualitas air bersih yang berada pada kisaran pH 6,5 - 6,