Sri Mulyani Sabang
Unknown Affiliation

Published : 25 Documents
Articles

Found 25 Documents
Search

Analisis Perbedaan Kadar Vitamin C Buah Naga Merah (Hylocereus polyrhizus) Dan Buah Naga Putih (Hylocereus undatus) Yang Tumbuh Di Desa Kolono Kabupaten Morowali Provinsi Sulawesi Tengah Risnayanti, Risnayanti; Sabang, Sri Mulyani; Ratman, Ratman
Jurnal Akademika Kimia Vol 4, No 2 (2015)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (355.996 KB)

Abstract

This study aims to determine the differences of vitamin C levels contained in the red dragon andwhite dragon fruits. The flesh and the skin of the dragon fruits were used as the samples and the fruitswere taken from Kolono Village, Morowali. Analysis of vitamin C levels in the samples was done byiodine titration method using starch solution as an indicator. The results showed that vitamin C levelsin the skin of red dragon fruit was 4.04 mg/100 g, while in the flesh was 5.28 mg/100 g. Levels ofvitamin C in the skin of white dragon fruit was 7.56 mg/100 g, while in the flesh was 7.92 mg/100g. The data indicate that vitamin C levels in the flesh and the skin of white dragon were higher thanvitamin C levels in the flesh and the skin of red dragon fruit. It can be seen that both of fruits havedifferent vitamin C levels.
Penerapan Metode Demonstrasi Sebagai Upaya Peningkatan Hasil Belajar Siswa di Kelas III SDN Mire Kamoyo, Ratna; Rede, Amran; Sabang, Sri Mulyani
Jurnal Kreatif Tadulako Online Vol 5, No 2 (2017): Jurnal Kreatif Tadulako Online
Publisher : Jurnal Kreatif Tadulako Online

Show Abstract | Original Source | Check in Google Scholar | Full PDF (142.881 KB)

Abstract

Penelitian ini bertujuan untuk meningkatkan hasil belajar IPA pada siswa kelas III SDN Mire melalui penerapan metode demonstrasi. Jenis penelitian ini adalah penelitian tindakan kelas. Desain penelitian mengacu pada model Kemmis dan Mc. Target yang terdiri atas 4 komponen, yaitu (1) perencanaan tindakan, (2) pelaksanaan tindakan, (3) observasi, (4) refleksi. Jenis data yang digunakan yaitu data kualitatif dan kuantitatif. Adapun hasil observasi kegiatan guru siklus I presentase aktifitas guru sebesar 72% atau berada dalam kategori baik sedangkan siklus II meningkat menjadi 84% dan pada kategori sangat baik. Aktivitas siswa siklus I persentase rata-rata yang diperoleh mencapai 72,85 % dan pada siklus II meningkat menjadi 91,42 % dan berada pada kategori sangat baik. Hasil analisis tes tindakan siklus I menjelaskan Presentase Daya Serap Klasikal  mencapai 69,46% dengan kriteria penilaian cukup, Persentase ini meningkat pada siklus II menjadi 78,75 % dengan kriteria baik, sedangkan untuk Persentase Ketuntasan Klasikal pada Siklus I mencapai 75 % dengan kriteria baik meningkat pada siklus II menjadi 85,71 % atau dengan kriteria ketuntasan yang sangat baik. Berdasarkan perolehan hasil tersebut dapat disimpulkan bahwa dengan menggunakan metode demonstrasi dapat meningkatkan hasil belajar IPA dengan materi Energi untuk siswa kelas III SDN Mire. Kata Kunci: Metode Demonstrasi dan Hasil Belajar
Penerapan Model Pembelajaran Kolaboratif dengan Teknik Learning Cell pada Materi Kelarutan dan Hasil Kali Kelarutan Pada Siswa Kelas XI SMA Negeri 6 Palu Panontji, Putri Ningsi A.; Sabang, Sri Mulyani; Mustapa, Kasmudin
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (121.348 KB)

Abstract

This study was conducted to determine the difference on students learning outcomes in the classroom implemented with collaborative learning model using cell learning technique on the topic of solubility and solubility product in the class XI at SMAN 6 Palu. This study was a quasi-experiment research with pretest-posttest control group design. Population in this study were students of class XI IPA at SMAN 6 Palu enrolled in the academic year of 2015-2016 amounting to 43 student. Sampling technique was a sampling saturated. Samples in this study were 21 students in the class XI IPA2 as the experimental class, and 22 students in the class XI IPA1 as the control class. The results showed that the output rank for the mean value of the experimental class was bigger than the control class, 30.29> 14.09. The output statistic test showed sig. 2-tailed 0.00 < 0.05, and Zcount (-4.25) < Ztable (-1.64). These mean that H0 was rejected and Ha was received. Therefore, it can be concluded that there is significant difference in learning outcomes between the class which implement collaborative learning model with learning cell technique, and the classes which implement traditional learning model on the topic of solubility and solubility product in the Class XI at SMAN 6 Palu.
Pengaruh Lama Penyimpanan Rimpang Kunyit (Curcuma domestica Vahl) Terhadap Daya Hambat Antioksidan Suparmajid, Armin H.; Sabang, Sri Mulyani; Ratman, Ratman
Jurnal Akademika Kimia Vol 5, No 1 (2016)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (394.867 KB)

Abstract

The research about the effect of storage time of tumeric (curcuma domestica vahl) for inhibition of antioxidant has been conducted. The study aims to determine the effect of storage time of tumeric (curcuma domestica vahl) for inhibition of antioxidants as well as to determine how much inhibition of antioxidant found in tumeric. This study used a variation of storage time namely 8, 13 and 18 days. The extract of tumeric was obtained by maceration method using ethanol. The antioxidant activity of turmeric was measured by UV Vis spectrophotometry in which DPPH (1,1-difenil-2-pikrilhidrazil) as a reagent. The absorbance measurements was carried out at a wavelength of 517 nm to determine the percentage of inhibition of antioxidant in turmeric and vitamin C (as a positive control). The results revealed that percentage of inhibition of vitamin C is 56.68%, while the percentage of inhibition of turmeric decrease during storage. Based on the data obtained, turmeric with storage time of 8 days is 43.96%, turmeric with storage time of 13 days is 23.27%, and turmeric with storage time of 18 days is 11.92%. This study showed that the effect of storage time on the inhibition of antioxidant turmeric are characterized by a decrease of percentage inhibition of antioxidants in turmeric during the storage period.
Pengaruh Model Pembelajaran Kooperatif Tipe Two Stay Two Stray Terhadap Hasil Belajar Siswa Kelas XI IPA Di SMA Negeri 2 Pasangkayu Pada Pokok Bahasan Bentuk Molekul Lestari, Lestari; Tangkas, I Made; Sabang, Sri Mulyani
Jurnal Akademika Kimia Vol 3, No 1 (2014)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (294.355 KB)

Abstract

The basic principle in the learning activities is student-centered learning. This requires a learning model that empowers students to be more actively involved in the learning process at school one cooperative learning model Two Stay Two Stray (TSTS). This study aims to determine the effect of cooperative learning model TSTS to see a difference in student learning outcomes between cooperative learning model TSTS and conventional learning on the subject of molecular geometry. The study population was all students class XI Science SMAN 2 Pasangkayu Academic Year 2013/2014. The study sample consisted of two class, namely class XI Science 2 as many as 25 people as the experimental class and class XI Science 1 by 27 people as the control classes determined by purposive sampling. Data collection was conducted using test instruments which consist of 20 items. Testing research data used t-test statistical analysis of the two parties with the prerequisite test that tests for normality and homogeneity tests. Average score of student learning outcomes using cooperative learning model TSTS is 74.06 while the average score of student learning outcomes that follow conventional learning is 66.5. Based on statistical analysis by t-test hypotheses two parties obtained tcount = 2.83 and this is in the region of rejection of Ho, namely -2.00 and 2.00. These results indicate that there are differences in student learning outcomes given cooperative learning model TSTS with conventional.
Penerapan Model Pembelajaran Kooperatif Tipe Make A Match pada Materi Ikatan Kimia pada Siswa Kelas X SMA Negeri 3 Palu Usia, Mirdawati; Tiwow, Vanny M. A.; Sabang, Sri Mulyani
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (140.923 KB)

Abstract

This study aimed to determine differences the learning outcomes of students in class using the cooperative learning model type make a match with class using conventional in the chemical bonding material in class X SMA Negeri 3 Palu. Type of research was a quasi-experimental design with non randomized pretest-posttest control group design. This research was carried out in two class of class X MIA 6 as an experimental group (n = 32) and class X MIA 7 as a control group (n = 30). Testing of learning outcomes of students data used t-test statistical analysis of the two parties with the prerequisite test: test for normality and homogeneity of a written test given after learning (posttest). The results of the data analysis, the average values obtained of class experiment (X1) was 69.00 with a standard deviation 10.66 and control class (X2) was 64.73 with a standard deviation was 11.38. Results of hypothesis testing, obtained that tcalct = 2.14 and ttable = 2.00 with a= 0.05 and degrees of freedom of 60. Results of the calculation the express that H0 was rejected and Ha was accepted. Based on the results obtained, it can be concluded that there were differences between the learning outcomes of students in chemistry class that using cooperative learning model type make a match, with the class using conventional on chemical bonding material in class X SMA Negeri 3 Palu.
Pengaruh Ekstrak Daun Kemangi (Ocimum sanctum L.) Terhadap Kelarutan Kalsium Batu Ginjal Sumarni, Wiwin; Sabang, Sri Mulyani; Ratman, Ratman
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (163.743 KB)

Abstract

The aim of the study is to determine dissolving power and the solubility of calcium on kidney stone by the extracts of basil (Ocimum sanctum L.) and determined the effect of basil leaves extracts concentration (%)on the solubility of kidney stones calcium. The method used the extraction infuse way. Variation of concentration extracts were 5%, 10%, 15%, 20% and 25%. The solubility of calcium in basil leaves extracts was determined by SpectroDirect. The results showed that concentration of 5% dissolved by 15.38% of calcium; concentration of 10% dissolved by 21.05%; concentration of 15% dissolved by 26.92%; concentration of 20% dissolved by 35.71%, and concentration of 25% dissolved by 42.10%calcium. It can be concluded that the extracts of basil leaves dissolved kidney stones calcium. The solubility tests showed that the higher the concentration of the basil leaves extracts than the greater the solubility.
Pembuatan Pupuk Organik Dari Limbah Tandan Kosong Kelapa Sawit Warsito, Joko; Sabang, Sri Mulyani; Mustapa, Kasmudin
Jurnal Akademika Kimia Vol 5, No 1 (2016)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (322.188 KB)

Abstract

The study’s aim is to utilize waste oil palm empty bunches into organic fertilizer and analyze the levels of nitrogen (N) and phosphorus (P). The methods used may include sampling and laboratory analysis. To determine the levels of nitrogen (N) and phosphorus (P) on the organic fertilizer from TKKS waste, spectrodirect was used. Based on analysis, it was obtained that level of nitrogen (N) is 2.033% and phosphorus (P) was 0.107%, while the amount of moisture content was 47.53% and ash content was 36,66%. Based on the SNI about compost quality from organic waste, the results of this study indicate that waste TKKS can be used as raw material for organic fertilizer.
Karakterisasi FTIR Poliblend Adsorben Serbuk Biji Buah Kelor (Moringa Oleifera) Dan Cangkang Ayam Ras Untuk Pengolahan Air Gambut Di Daerah Palu Barat Bertus, M. Yusi Prilina; Suherman, Suherman; Sabang, Sri Mulyani
Jurnal Akademika Kimia Vol 3, No 1 (2014)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (460.914 KB)

Abstract

The seed of moringa (Moringa oleifera) is used as natural water purification materials and are coagulant. Biocoagulant materials combined in this study were egg shells. Egg shell is known to contain high calcium. This study aims to determine the character of polyblends in physical – chemical test, the degree of swelling an polyblends functional groups, and to determine the optimum ability of the polyblends power absorption. The research method used was sampel preparation, polyblends characterization, swelling degree and to analyze FTIR functional group and water quality test with parameters. The research results showed that the physical character polyblends lasting effectiveness was polyblends SBK : SCT with a ratio of 5:5, while the chemistry test of polyblends character with FTIR analysis showed the functional groups OH, C=C, CH, CH2, CO which each have their own unique characteristics. The water quality with parameters of turbidity, good polyblends adsorption was polyblends SBK:SCT with ratio of 7.5:2.5 with a decreased of 91.43%, ferrous metal content, polyblends SBK:SCT with a ratio of 7.5:2.5 declined 90.90%. The value test of BOD and COD, the best polyblend adsorption was polyblends 5:5 with 93.26% dcreased. Polyblends that produced the best pH of water quality was polyblend with a ratio of 7.5:2.5 with the pH value of 4.68 turned to 7.82.
Penerapan Model Pembelajaran Kolaboratif dengan Teknik Think Aloud Pair Problem Solving pada Materi Hidrokarbon Siswa Kelas X SMA Negeri 6 Palu Durufin, Ekanovi Pratiwi A.; Sabang, Sri Mulyani; Said, Irwan
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

Show Abstract | Original Source | Check in Google Scholar | Full PDF (162.269 KB)

Abstract

This study was conducted to determine differences of the student’s learning outcomes that was applied by collaborative learning model with technique think aloud pair problem solving (TAPPS) and was applied by lecture method in the hydrocarbon material against the student’s learning outcomes in class X SMAN 6 Palu. The collaborative learning model was think aloud pair problem solving technique on the hydrocarbon material class X SMAN 6 Palu. The type of research was a quasi-experimental with research design pretest posttest control group design. Population in this research was whole students in class X SMAN 6 Palu, academic year 2015-2016 consisting of six classes totaling 115. The sampling technique used was a purposive sampling. The samples in this research was an experiment class with 17 students and a control class with 8 students. Data analysis techniques used was non-parametric and statistical method of Mann-Whitney U-test. Research result showed the output Rank for mean score of the experiment class was bigger than the control class 22.41 ˃ 13.83. The output statistics test, Sig. 2-tailed (0.13) 0.05 ˂ and Ucalculation (78) ˂ Utable (93). From the findings of hypothesis testing, H0 was rejected and Ha was accepted then it can be concluded that there were significant differences learning outcomes in the student’s with the collaborative learning model technique think aloud pair problem solving (TAPPS) with the lecture method on the hydrocarbon material against the learning outcome of students in class X SMAN 6 Palu.