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Jurnal Ilmu Pendidikan Indonesia
Published by Universitas Cenderawasih
ISSN : 23383402     EISSN : 2623226x     DOI : http://doi.org/10.31957/jipi.v10i2.2195
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Education Mathematics Physics
Jurnal Ilmu Pendidikan Indonesia (JIPI) adalah terbitan berkala ilmiah yang diterbitkan oleh Program magister Pendidikan IPA, Program Pascasrjana Universitas cendrawasih. JIPI terbit 3 kali dalam setahun pada bulan Februari, Juni dan Oktober. JIPI merupakan sarana publikasi bagi akademisi dan praktisi di bidang IPA dan sains dalam menerbitkan artikel hasil-hasil penelitian.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 165 Documents
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PROXIMATE LOCAL FOOD WASTE IN ALTERNATIVE FISH FEED PRODUCTION IN SOUTHEAST MALUKU Cenny Putnarubun; Maria Ngamelubun; Daniel Ngabalin; Jakomina Metungun
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 1 (2023): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i1.2748

Abstract

Utilization of local food waste as an innovation in diversifying quality fish feed products in producing superior seeds. The study aimed to determine the nutritional content of local food waste. The research was carried out for 2 months,. The pr,imate analysis method (AOAC, 2005) and the results are presented in table and descriptive form. The research was conducted in two stages, namely 1). Local food waste sampling stage and 2) proximate analysis stage. The results obtained are proximate coconut cake which includes protein content: 7.29%, fat: 38.76%, water content: 3.05%, ash content: 22.247% and crude fiber: 24.29%. The proximate content of cassava leaves includes: protein content: 22.53%, fat: 5.05%, water content: 5.1%, ash content: 22.75%, and crude fiber: 33.46%, nutritional content of Moringa leaves among others: protein content: 25.66%, fat: 2.54%, water content: 7.4%, ash content: 22.247%, and crude fiber: 30.01%. The results show that local food staples still have a high enough nutritional content so that they can be used as raw materials for fish feed.
THE USE OF HYDROCARBON KIT TEACHING AIDS FROM USED MATERIALS IN TGT LEARNING TO IMPROVE STUDENT LEARNING OUTCOMES AND MOTIVATION AT RURAL SCHOOL Minarni Ramajura; Kasmudin Mustapa; Magfirah Magfirah
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 1 (2023): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i1.2749

Abstract

This study aims to determine the effectiveness of the use of teaching aids hydrocarbon materials from used goods in learning with the TGT model to improve learning outcomes and student motivation at rural school. The research design used was a quasi-experimental design with a two-group posttest-only design. The research sample is 40 high school students in SMAN 9 Palu suburbs. Hydrocarbon teaching aids are in the form of KIT puzzles and molimod.. Hydrocarbon teaching aids have been validated by media experts and material experts and got very feasible result (91.5%). The research instrument used in this study was a test of hydrocarbon material and a learning motivation questionnaire. Data on learning outcomes and motivation were analyzed using descriptive statistics and inferential statistics independent sample t-test. The results showed that the use of teaching aids for hydrocarbon materials from used goods in learning with the TGT model was effective in improving student learning outcomes because there were differences in learning outcomes tcount (2.46) > ttable (2.02) and the experimental group learning outcomes were higher than the control class. There are differences in learning motivation tcount (3.17) > ttable (2.02), but the difference in motivation is very small so that the learning motivation in the experimental group and the control class is almost the same
PATTERN OF POTASSIUM RELEASE FROM SLOW RELEASE FERTILIZER POTASSIUM CLORIDE-BENTONITE FERTILIZER Carver J M; Suarya P; Irdhawati Irdhawati
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 2 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i2.3074

Abstract

Potassium has an important role in the process of plant growth, but its presence and availability in the soil are limited, because potassium is easily lost and flows out by water. Increasing the efficiency of potassium fertilization can be pursued through the formulation of fertilizer in the form of slow-release fertilizer (SRF) using bentonite.  This study aimed to determine the release of potassium in potassium chloride fertilizer into the soil after bonding with acid-activated bentonite coated with potassium chloride. The composition of the KCl fertilizer made varies with bentonite with a mass ratio (g) of 1:1; 2:1; 3:1; 4:1; and 5:1, with a percolation time of 28 days. The concentration of released potassium was determined using an atomic absorption spectrophotometer. Material characterization was carried out by FTIR. The results showed that the ratio 1:3 had the highest potassium content of 45.12% with an incubation time of 28 days. The concentration of released potassium on day 7; 14; 21; and 28 respectively (12.55±1.25)%, (28.39±1.49)%, (5.,91±0.98)%, and (70.49±1.36)% . The results of the characterization of the determination of the fungal group on SRF3 were not significantly different from that of activated bentonite. Even though there were differences in the intensity of certain peaks and changed the functional groups.
DEVELOPMENT OF PJBL STEM-BASED PHYSICS E-MODULES IN IMPROVING GENERIC SCIENCE SKILLS OF YPPK TERUNA BAKTI JAYAPURA CLASS X IPA STUDENTS IN THE MATERIAL OF VECTOR ANALYSIS IN PARABOLA MOTION Albert Lumbu; Victoria Dian Pratami Kurniawan
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 2 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i2.3075

Abstract

This study aims to determine the feasibility of developing PjBL STEM-based Physics e-modules and improving students' generic science skills (KGS) using PjBL STEM-based Physics e- modules on vector analysis materials on parabolic motion. The research method used is R&D (Research and Development). The research sample consisted of 24 students. The results showed that the feasibility of the PjBL STEM-based Physics e-module on vector analysis material on parabolic motion obtained an average percentage of 92% with a very suitable category for use as a teaching material. Generic science skills (KGS) of class X IPA students on vector analysis material on parabolic motion resulted in an average percentage of 47.92% in the less skilled category before using the PjBL STEM-based physics e-module and resulted in an average percentage of 82.16% in the skilled category after using the PjBL STEM-based physics e-module
ANALYSIS OF THE ABILITY OF NANO ETHANOL EXTRACT OF CORIANDER (Coriandrum sativum L.) SEEDS TO REDUCE BLOOD GLUCOSE LEVELS IN HYPERGLYCEMIC WISTAR RATS Sri Wahjuni; I M.O. Adi Parwata; A.A. Bawa Putra; Mustika Lahaya
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 2 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i2.3076

Abstract

Nano ethanol extract of coriander seeds is proven to increase the activity of active compounds in the body. This research was conducted to see the ability of coriander seed ethanol extract to reduce glucose levels in hyperglycemic rats compared to coriander seed extract without nano. The size of the nano coriander seed extract after being characterized by the Particle Size Analyzer (PSA) was 182.4 nm and the zeta potential value was -1.5 mV. The activity test results showed the ability of the coriander seed ethanol extract to be more effective in lowering blood glucose levels compared to the coriander seed extract without nano. Identification of compounds thought to be effective as hypoglycemics using Liquid Chromatography-Mass Spectrometry/Mass Spectrometry (LC-MS/MS), identified 7 compounds namely phenylalanine, indole, apigenin, 4-methoxybenzaldehyde, 2,5-dimethoxybenzaldehyde, 2-flouren-9-ylidenemethyl-pyridine , and 5-pentyl-1,3-benzenediol, which are suspected to be active as hypoglycemics are phenylalanine, indole, apigenin, and 2,5-dimethoxybenzaldehyde. The ethanol extract of coriander seeds in nanoparticle preparations is more effective in reducing blood glucose levels than the ethanol extract of coriander seeds without nano preparations
DEVELOPMENT OF JAYAWIJAYA LOCAL WISDOM TEACHING MATERIALS TO IMPROVE SCIENCE PROCESS SKILLS Jan Pieter; Triwiyono Triwiyono; Putu Victoria M. Risamasu
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 2 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i2.3077

Abstract

The absence of teaching materials with a local context is an obstacle to the implementation of science learning in areas where the mother tongue is still dominant in daily communication. Related to this reality, this study aims to develop and validate teaching materials in the context of Jayawijaya local wisdom that can be used to improve students' science process skills. The method used is the research and development (R&D) method by adopting the 4D (Four D) model developed by Thiagarajan and Melvyn (1974). The results of data analysis carried out by 5 validators stated that the teaching materials developed were very feasible for use in science learning. The content expert and media expert validators gave an average score of 93.83 (very good) and the practitioner validator assessed 97.12 (very good). The results of the validation show that the teaching materials in the context of local wisdom that are developed are feasible and can be used in science learners at school
DEVELOPMENT OF EXCAVATION MATERIAL CHEMISTRY MODULE BASED ON PAPUAN LOCAL WISDOM Mamberuman Marthen Inggamer; Tiurlina Siregar
Jurnal Ilmu Pendidikan Indonesia Vol 11, No 2 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i2.3073

Abstract

This study aims to look at the Feasibility of mineral chemistry modules based on Papuan local wisdom by looking at the increase in learning outcomes using the module. The sample in this study was students in the fifth semester of chemistry education with a total of 18 people. The research results show that: 1). The feasibility of the module from the material validator obtained an average validation of 75.18% in the good category, the results of small-scale trials with an average percentage value of 81.75% in the very good category. 2). Increasing learning outcomes with an average n-Gain test of 0.55 in the moderate category, this indicates that in general the use of local wisdom-based modules can improve learning outcomes.
UTILIZATION OF CINNAMON BARK (CINNAMOMUM BURMANNI) EXTRACT AS A NATURAL INHIBITOR FOR THE CONTROL OF CORROSION RATE IN IRON METAL Sembiring, Aggryppyne Keyne Oberta; Putra, Anak Agung Bawa; Ratnayani, Oka
Jurnal Ilmu Pendidikan Indonesia Vol 11 No 3 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i3.2341

Abstract

Iron is a metal that is very susceptible to corrosion. Corrosion of iron can occur due to reaction with the surrounding environment, causing damage to ferrous metal. The use of organic inhibitors such as cinnamon bark is considered to be able to suppress the corrosion rate, because in the inhibitor there are tannin compounds that are able to form complex compounds with Fe(III) on the metal surface. Bark consists of an tannins, makes this cinnamon bark capable of being an organic inhibitor. The purpose of this riset was to determine the effect of inhibitor concentration and variation of corrosive media on the corrosion rate, and to determine whether cinnamon bark extract had the potential to be used as an inhibitor. The method used is weight loss in which iron is immersed in various corrosive media for 48 hours without the addition of inhibitors and with the addition of inhibitors of 10; 20; 30; 40; 50; 60; 70; 80; 90; and 100 ppm. The highest corrosion rate without the addition of inhibitors occurred in iron immersed in salt media (NaCl 3.5%) of 53.5371 mpy, and the lowest corrosion rate occurred in iron immersed in neutral media (aquadest) of 15.6342 mpy. The corrosion rate also decreases with the increase in the concentration of the added inhibitor. In other words, this cinnamon bark extract has the potential to be used as an organic inhibitor.
SYNTHESIS AND CHARACTERIZATION OF MONTMORILLONITE/TiO2 COMPOSITES AS A PHOTOCATALYST IN REDUCING BOD AND COD OF DOMESTIC WASTEWATER Hayati, Ismi; Bawa Putra, Anak Agung; Sutha Negara, I Made
Jurnal Ilmu Pendidikan Indonesia Vol 12 No 1 (2024): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v12i1.2535

Abstract

The development of hotels in Bali is increasing every year, this is directly proportional to the number of tourists and the waste generated. Hotel liquid waste has the potential to pollute the environment if there is no pre-disposal treatment. This study aims to obtain the best MMT/TiO2 composite that acts as an adsorbent and photocatalytic in reducing BOD (Biological Oxygen Demand) and COD (Chemical Oxygen Demand) levels of domestic wastewater. Composite synthesis was carried out by combining the top-down method, ball milling, and sonication. The ball milling method is used to produce montmorillonite, which has a smaller size, with a ball mass to sample mass ratio of 2:1 at a speed of 250 rpm. Variations in milling times of 0, 2, 4, and 6 hours were applied to determine the effect of milling time. The sonication method was used to obtain a smaller TiO2 particle size by exposing it to ultrasonic waves for 30 minutes. Calsination of the composite was carried out at a temperature of 400 °C. The results of composite characterization using the PSA (Particle Size Analyzer) showed that the composite did not meet the nanoparticle requirements because it had a particle size > 100 nm with a PI value > 0.5, which was still classified as polydispersity. NMT 6 has the best PI value of 0.65, which is then used to determine the optimum composite time to reduce BOD and COD levels. The optimum irradiation time obtained from composites in degrading waste is 90 minutes, which can reduce BOD levels by 78.53% and COD levels by 69%. The ability of composites NMT-6 to reduce BOD and COD levels is greater than that of montmorillonite and TiO2.
THE INFLUENCE OF BELT DIRECTION ON THE CONNECTION OF PRECAST COLUMN- BEAMS WITH CFRP SHEETS Rante, Harmonis
Jurnal Ilmu Pendidikan Indonesia Vol 11 No 3 (2023): JURNAL ILMU PENDIDIKAN INDONSIA
Publisher : Program Magister Pendidikan IPA, Program Pascasarjana Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v11i3.3181

Abstract

The precast beam-column connection method with CFRPs can be developed into an applicable splicing method and environmentally friendly, considering its achievement of 90.6% over monolith joints. The existing weaknesses need to be studied further for the improvement of this connection method. The use of belts with a perpendicular U-shape direction apparently causes the effect of edge stress (scissor force) which actually causes premature failure. This study aims to analyze the influence of belt direction on precast beam-column joints with CFRPs, namely attaching diagonal directional belts to the U-shape. Variations of specimens used are monolith connections (MN) as normal specimens, beltless connections (U1-B0), connections with one belt installed perpendicular to U-shape (U1-B1) and connections with one belt mounted diagonally to the U-shape (U1-DB1). The MN joint achieves a load capacity of 24 kN and deflection of 44.7 mm. U1-B0 reaches 21.75 kN or 90.6% with deflection of 31.36 mm or 70.2% against MN. The U1-B1 reaches 15 kN (62.5%) and deflection is 27.10 mm (60.6%). The U1-DB1 connection reached 26.25 kN (109.4%) with a deflection of 47.16 mm (105.5%) against MN. Changing the direction of the belt to diagonal has improved joint performance, increasing load capacity by 175% and deflection by 174% against U1-B1 and achieving more than monolith joints. With the use of diagonal belts, edge stress still occurs but the process is slower so that the U-shape can last longer. A thicker U-shape is needed to overcome edge stress and this is a part that needs further study.

Page 12 of 17 | Total Record : 165

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