Article Per Year (5 Year)
p-Index From 2019 - 2024
1.554
P-Index
This Author published in this journals
All Journal Jurnal Hortikultura Indonesia Jurnal Kreatif Tadulako Online Jurnal Akademika Kimia Jurnal Akademika Kimia
Vanny M. A Tiwow
Pendidikan Kimia University Of Tadulako
Agriculture, Biological Sciences & Forestry Chemistry Education

Published : 38 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 18 Documents
Search
Journal : Jurnal Akademika Kimia

 1   2 
PENGGUNAAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD (Student Teams Achievement Division) UNTUK MENINGKATKAN HASIL BELAJAR KIMIA POKOK BAHASAN LAJU REAKSI PADA SISWA KELAS XI IPA SMA NEGERI 7 PALU Angriani, Eva; Tiwow, Vanny M.A.; Tangkas, I Made
Jurnal Akademika Kimia Vol 2, No 4 (2013)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.995 KB)

Abstract

The research was conducted at SMAN 7 Palu for the purpose to improving student learning outcomes of Chemistry through the use of Cooperative Learning Type STAD methods (Student Teams Achievement Division) on the chemistry subject of reaction rate. Population of this research was all students in class XI IPA SMA Negeri 7 Palu academic year 2012/2013, consisting of 3 classes. The sample were in class XI IPA 2 with total 34 students, as the experimental class that used cooperative learning STAD method and class XI IPA 1 with total 37 students as a control class (not used Cooperative learning STAD methods). The data were collected by using the test instrument. The data collecting result use the statistical analysis t-test with the prerequisite test for normality and homogeneity tests. The study shows that the mean value of student learning outcomes use cooperative learning STAD model is 7.66; the mean value of student learning outcomes without using cooperative learning STAD model was 5.57. Based on the hypothesis testing using statistical t-test in the right side earned value thitung > ttabel is 5.36 > 1.66 with degree of freedom = 0.05 and dk = 69. The results shows that the use of cooperative learning STAD model could improve learning outcomes of students in reaction rate of chemistry subject.
Analisis Kadar Unsur Nitrogen (N) Dan Posforus (P) Dalam Lamun (Enhalus acoroides) Di Wilayah Perairan Pesisir Kabonga Besar Kecamatan Banawa Kabupaten Donggala Ramadhan, Sofyan; Tiwow, Vanny M. A.; Said, Irwan
Jurnal Akademika Kimia Vol 5, No 1 (2016)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.198 KB)

Abstract

The caring of community and local government toward sustainability of seagrass ecosystem has not built properly as well as toward the ecosystem of coral reef and mangrove, as a result, this plant needs attention for its sustainability. One of sea grass’s species which is avalaible abundantly in Banawa district Donggala regency, is enhalus acoroides type. This research aims to know the level of nitrogen dan phosphorus in enhalus acoroides which grow in the bay of Kabonga besar, Banawa district Donggala regency. Determination of nitrogen level used kjeldhal method which consisted of destruction, destilation, titration and phosphorus used wet ash method which continued to use the UV-Vis spectrometry. The result showed that the level of nitrogen in sea grass (enhalus acoroides) type was 1.89 in percentage and phosphorus was 0.413 in percentage.
Kondisi Optimum Adsorpsi Arang Hayati dari Kulit Pisang Raja (Musa X paradisiaca L.) terhadap Logam Timbal (Pb) dan Tembaga (Cu) Tanggebono, Iren S. A.; Tiwow, Vanny M. A.; Jura, Minarni Rama
Jurnal Akademika Kimia Vol 7, No 2 (2018)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.391 KB)

Abstract

This study aimed to determine the optimum condition of biocharcoal from banana peel on adsorption of lead (Pb) and copper (Cu) metals based on the variation of weights and biocharcoal contact times. Banana peel used in this research were taken from Sidondo III the village, Sigi, Central Sulawesi. To determine absorbed metals in biocharcoal banana peel was measured by a spectrophotometer spectroDirect. The results showed that the optimum weight of adsorption lead (Pb) ion was 80 mg and copper (Cu) ion was 40 mg with each percentage adsorption of 73.91% and 21.23%, respectively. The optimum time to adsorb lead and copper ions was 90 minutes with the percentage adsorption of 89.13% for lead ion and 25.86% for copper ion.
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 | Download Original | 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.
Distribusi Unsur Hara N dan P dalam Sedimen di Ekosistem Lamun (Seagrass) di Wilayah Pesisir Desa Kabonga Besar Kabupaten Donggala Silvia, Mega; Tiwow, Vanny M.A.; Said, Irwan
Jurnal Akademika Kimia Vol 3, No 2 (2014)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (318.376 KB)

Abstract

This research aims to determine the distribution patterns and concentrations of nitrogen and phosphorus nutrients in the sediment at the coastal region of seagrass ecosystems Kabonga Besar village Donggala district. Phosphorus (P) and nitrogen (N) in water its are nutrient that is essential for the growth of phytoplankton. This research was carried out by quantitative analysis using a nitrogen compound Kjeldhal method which consists of three phases: destruction, distillation, and titration, while for phosphorus compound using UV-Vis spectrophotometric method. The results showed that the lowest levels of nitrogen were obtained at the level of fertility sea grass sediments are less abundant range of 0.05% - 0.06% , on the contrary sea grass abundant fertility rate which ranges from 0.07% - 0.09%. For the highest levels of phosphorus nutrients contained in the water that is abundant on sea grass fertility ranged from 4.335 - 4.387 mg/100, and the lowest was ranged from 2.292 - 2.358 mg/100. Based on the data obtained it can be concluded that the content of nitrogen and phosphorus nutrients in sediments sea grass at the research area was still relatively low, it could affect the growth of seagrass.
ADSORPSI ION KADMIUM(II) DARI LARUTANNYA MENGGUNAKAN BIOMASSA AKAR DAN BATANG KANGKUNG AIR (Ipomoea aquatica Forks) (Adsorption of Cadmium(II) Ion from its Solution by Using Biomass of Roots and Stems’ Water Spinach (Ipomoea Aquatic Forsk)) Suhud, Iffatunniswah; Tiwow, Vanny M. A.; Hamzah, Baharuddin
Jurnal Akademika Kimia Vol 1, No 4 (2012)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.737 KB)

Abstract

The research has been conducted on the adsorption of cadmium(II) ion from its solution by using biomassa roots and stems of water spinach (Ipomoea Aquatic Forsk). Theaim of the research was to determine optimum pH and concentration of cadmium(II) metal adsorbed by biomass root and stems of water spinach. The method used this study was laboratory experiments with 0.1 grams of roots and stems of water spinach powder as adsorbent and 25 mL of the cadmium(II) solution. The variation of pH was 1, 2.3, 4.5, 6.7, and 8, while the concentration was 100 ppm, 200 ppm, 300 ppm, 400 ppm, 500 ppm, 600 ppm, and 700 ppm. Determination of cadmium(II) ion adsorbed by the adsorbent has been performed using atomic adsorption spectrophotometer (AAS). The measurement showed that the optimum pH of cadmium(II) ion adsorbed by the root of water spinach was at pH 4, and by the stems was at pH 3. While the optimum concentration of metal cadmium(II) solution adsorbed by the biomass of roots and stems of water spinach was 600 ppm, the same as the adsorption powerof 91.862 mg/g for root and 91.118 mg/g for stems respectively.
Analisis Unsur Hara Pupuk Organik Cair dari Limbah Ikan Mujair (Oreochromis mosambicus) Danau Lindu dengan Variasi Volume Mikroorganisme Lokal (MOL) Bonggol Pisang Lepongbulan, Winda; Tiwow, Vanny M. A.; Diah, Anang Wahid M.
Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.207 KB)

Abstract

The Lake Lindu is one of the potential water resources in Central Sulawesi with various species of fish and one of the most commonly found fish are species mujair fish. Mujair fish processing wastes such as offal can be polluted the environment if not managed properly. The study aim is to determine the contents of NPK nutrients in the liquid organic fertilizer by adding MOL banana weevil. The contents of nitrogen (N), phosphorus (P), and potassium (K) was determined by using spectro direct. The NPK contents in the liquid organic fertilizer of mujair fish waste from Lake Lindu reached the maximum NPK contents of nitrogen (N) of 0.311% by addition 100 mL MOL banana weevil, phosphorus (P) 0.167% by addition 150 mL of MOL banana weevil, and potassium (K) of 0.037% by addition 150 mL MOL banana weevil.
Analisis Kandungan Nitrogen (N) dan Posforus (P) pada Limbah Jeroan Ikan Mujair (Oreochromis mosambicus) Danau Lindu Hildawianti, Hildawianti; Tiwow, Vanny M. A.; Abram, Paulus Hengky
Jurnal Akademika Kimia Vol 6, No 3 (2017)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.989 KB)

Abstract

An effort to minimize the environmental pollution is using that waste as a base material of organic fertilizer. This study was conducted to determine the levels of Nitrogen (N) and phosphorous (P) contained in the offal waste of mujair fish (Oreochromis mosambicus) from Lindu lake. Samples of mujair offal waste were taken from fish saler on the street Towua, Palu. Analysis of Nitrogen levels usedKjeldhal method which consists of three phases, namely destruction, distillation, and titration. On the other hand, for Phosphorus analysis was using wet digestion method, followed by absorbance measurements of samples with spectronic 20 at a wavelength of 720 nm. Based on the analysis, the average of nitrogen (N) levels in mujair offal waste was 2.78%, while the average of phosphorus (P) levels was 2.48%. From these results, it is known that mujair offal waste contains more nitrogen (N) compared to phosphorous (P). In addition, when compared to the quality standard liquid organic fertilizer N and P content in mujair offal almost meets the quality standard liquid fertilizer, where the minimum technical requirements of organic liquid fertilizer should contain a total N content of 3-6% and 3-6% P2O5.
Analisis Kadar Glukosa pada Nasi Putih dan Nasi Jagung dengan Menggunakan Metode Spektronik 20 Novianti, Muli; Tiwow, Vanny M. A.; Mustapa, Kasmudin
Jurnal Akademika Kimia Vol 6, No 2 (2017)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.718 KB)

Abstract

Study on the main content of carbohydrates in rice and corn has been done. This study aims to determine the glucose level in a mixture of corn and rice with a certain ratio prior and during storage in a rice cooker. Spectronic 20 was used in this study to measure the absorption wavelength of sample solutions. Samples used in this study were from rice and sweet corn (Zea mays L. Saccharata) in various ratios of 1:0, 0:1, 1:1, 1:2, 2:1, 3:1 and 1:3, and variations in storage of 0, 1, 6, 12, 18, 24, 30, and 36 hours. The results showed that the highest glucose level in corn were of 32.250 ppm within 12 hours storage, and 40.447 ppm in rice for 12 hours storage. The highest level of glucose in mixture of corn and rice for 12 hours storage was 67.546 ppm at a ratio of 1 : 3.
Analisis Tembaga (Cu) Dan Timbal (Pb) dalam Air Laut dan Sedimen di Perairan Pantai Loli Kecamatan Banawa Kabupaten Donggala Santi, Santi; Tiwow, Vanny M. A.; Gonggo, Siang Tandi
Jurnal Akademika Kimia Vol 6, No 4 (2017)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (111.614 KB)

Abstract

This study aimed to determine the concentration of heavy Cu and Pb in seawater and sediment in coastal waters Loli subdistrict Banawa, district Donggala. The method used was destruction and using Atomic Absorption Spectrophotometer (AAS) instrument.Samples of seawater and sediment were taken by two sampling points. Samples were destructed by using a solution of HNO3 and HClO4with ratio 4: 1. Levels were measured at a wavelength of 325.7 nm for Cu and 217 nm for Pb. The analysis result obtained that the levels of Pb in the seawater in the range of 0,531-0.671 mg/L, while for Cu in the range of 0.009-0.090 mg/L it can be concluded that the levels of Pb and Cu in seawater has exceeded the levels were of 0,008 mg/L. For sediment samples obtained that Pb levels were around 1,78-7,73 mg/kg while for Cu 15.86-68.88 mg/kg so Cu in sediment was up to 30 mg/kg while the levels of Pb did not exceed the tolerance limits of 33 mg/kg.
Co-Authors Adrianton A. Afadil Agreistin E. Peole Alfiani Alfiani Angriani, Eva Baharuddin Hamzah Burhan Burhan, Burhan Dhamayanti, Noviasri Diah, Anang Wahid M. Enny Adelina Fajaryanti, Desi Eka Fatma Dhafir Fatmah Dhafir Febiliyanti, Rezha Hafid, Inda Widiarti Herlina Herlina Hildawianti, Hildawianti Hj. Musdalifah Nurdin I Made Tangkas Iffatunniswah Suhud Indarini Dwi Pursitasari Irna Vidianawati Irwan Irwan Irwan Said Karim, Kaharudin karmila karmila Kasmiati Kasmiati Kasmudin Mustapa, Kasmudin Lepongbulan, Winda Lestari Alibasyah Lestari M.P Ali Basyah Marrey Lanuhung Ambomide Mega Silvia Mestawaty Mestawaty Mildha Y. Charin Minarni Rama Jura Minarni Rama Jura Moh. Sahril Nirmala Nirmala Novianti, Muli Nurdin Rahman Paulus Hengky Abram Ramadhan, Sofyan Ramlah Ramlah Ratman Ratman Ratman Ratman Ratman Ratman Rosita Rosita Santi Santi Sarjan N. Husain Sarmilah Sarmilah Secsiolita, Raisa Siang Tandi Gonggo Siti Nuryanti Sri M. Sabang Sri Mulyani Sabang Suherman Suherman Suparman Suparman Supriadi Supriadi Tahril Tanggebono, Iren S. A. Usia, Mirdawati Wardatul Hanifah Wayan A. K. Mahardika Wayan N. Sugiani Yonathan Banua