Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

JKPK (Jurnal Kimia dan Pendidikan Kimia)

jkpk
Website

Published by Universitas Sebelas Maret

ISSN : 25034146 EISSN : 25034154 DOI : -

Core Subject : Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry

The JKPK (Jurnal Kimia dan Pendidikan Kimia) is a national journal, published three times a year in April, August, and December, containing research articles on Chemistry and Chemistry education.

Arjuna Subject : -

Articles 255 Documents

7 8 9 10 11

The Science Learning Material Using PjBL Model Integrated with Science, Technology, Engineering, and Mathematics (STEM) Approaches to Enhance Students' Communication Skills Sri Yamtinah; Hariyanto Hariyanto; Sukarmin Sukarmin; Sulistyo Saputro
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This study aims to develop a science learning material using PjBL model integrated STEM approaches to enhance students' communication skills. The method used is the 4D Research and Development (R&D) model and an experimental method for testing the effectiveness of the device. The study population was all VII class in one of the junior high schools in the South Tangerang region with samples taken using a random sampling technique of 76 people. The instrument used was a device feasibility test sheet and an observation skill communication sheet. The data obtained were then analyzed quantitatively and qualitatively. The results showed the components of the learning device in the form of syllabus, lesson plans, teaching materials and student worksheets, were very feasible to use with an average of 3.62. In addition, each item validity assessment instrument is also declared valid for use. The observed communication skills also increased from 1.59 to 3.15 with a gain value of 0.64 (medium category) for the experimental class. Meanwhile, the gain value for the control class is 0.005 (very low category). The difference in the gain value indicates that the learning device is effective in improving students' communication skills.

ISOLASI, AMPLIFIKASI DAN SEKUENSING FRAGMEN 1,9 KILOBASA GEN HEAT SHOCK PROTEIN 70 SALMONELLA ENTERICA SEROVAR TYPHI Muktiningsih Muktiningsih; Fera Kurniadewi; Imanuelle Orchidea R P
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Salmonella enterica serovar Typhi merupakan penyebab demam tifoid atau penyakit tifus pada manusia. Mekanisme molekuler patogenesitas Salmonella merupakan sistem yang kompleks dan diatur oleh sejumlah gen dan faktor-faktor virulen. Salah satu gen tersebut adalah dnaK yang mengatur sintesis Heat Shock Protein 70 (HSP70). Penelitian ini bertujuanuntuk memperoleh gen HSP70 yang berukuran 1,9 kilobasa dari bakteri Salmonella enterica serovar Typhi. Gen tersebut dapat digunakan untuk pengembangan vaksin tifus maupun diteliti lebih lanjut untuk mengungkap fungsi lainnya. Gen HSP70 berhasil diamplifikasi dari genom S. Typhi dengan reaksi polimerisasi DNA (PCR) menggunakan pasangan primer spesifik HSP70. Hasil elektroforesis menunjukkan bahwa produk amplifikasi tersebut berukuran 1900 pasang basa.Produk PCR dimurnikan sebelum urutan nukleotidanya ditentukan melalui sekuensing. Analisis hasil sekuensing menunjukkan produk PCR tersebut memiliki homologi sebesar 99% dengan dnaK (gen HSP70) S.enterica serovar Typhi strain CT18 yang terdapat pada gene database NCBI.

Synthesis of Tin(II) Oxide (SnO) Nanoparticle by Hydrothermal Method Saddam Husein; Endang Tri Wahyuni; Mudasir Mudasir
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This study aims to prepare nanomaterial tin(II) oxide (SnO) by using a simple hydrothermal method at low temperatures. The precursors used were tin(II) chloride dihydrate and sodium hydroxide pellets. Solid tin(II) chloride dihydrate and natrium hydroxide pellets are firstly dissolved in ethanol solvents separately and stirred for 3 h for each solution at a constant temperature 26oC. Characterization in this study were carried out by using X-ray diffraction (XRD) and Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy (SEM-EDX). The results of the XRD analysis shows that the sample of SnO nanoparticle is in accordance with the standard JCPDS SnO structure. SnO nanoparticle has tetragonal crystal structures and PSC: tp4 groups. It can be concluded that the tetragonal SnO nanostructure can be produced by a simple hydrothermal method at low temperatures by optimizing several synthesis parameters. The structure of SnO nanostructure has several potential applications i.e the absorption of heavy metals, optics, and as a catalyst for dye photodegradation.

Application of Nanocomposit Of Al2O3/Activated Carbon Prepared by Hydrothermal Process for Phenol Removal Allwar Allwar; Meidita Kemala Sari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Nancomposite of Al2O3/activated carbon was prepared from the mixture of alumina oxide (Al2O3) and activated carbon from palm oil shell under the mixture of aquabidest and ethanol (1:1). The mixture was treated by hydrothermal process at 250 oC for 3 h. Resulted Al2O3/ activated carbon was characterized using SEM/EDX for studying the morphology structure of activated carbon and composite showing a like flower structure attached on the surface. The chemical compositions were 73.18%, oxygen 23.72%, aluminium 2.30%, dan silica 2.00%. The efficiency of composite was investigated for removal of phenol in aqueous solution. The maximum adsorption of phenol was obtained at pH 2, adsorbent weight 2 g, contact time 60 min and phenol concentration 100 ppm.

Preparation and Characterization of Chitosan-Avocado Seed Starch (KIT-PBA) Edible Film Endang Susilowati; Ary Eny Lestari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Chitosan is a biopolymer that has the advantage of being able to form films that are non-toxic which has great potential to form edible films. To improve the properties of edible films in the form of antioxidants, it is necessary to add other materials such as avocado seed starch. This study aims to determine the effect of the use of avocado seed starch on mechanical properties, degree of swelling and solubility of edible film chitosan-Avocado Seed Starch (Kit-PBA). This study uses a laboratory experimental method. Steps in this study are (1) extraction of avocado seed starch; (2) Making edible film Kit-PBA (mixing chitosan and avocado seed starch), heating and neutralizing) with a ratio between chitosan: avocado seed starch are at 50:50; 60:40; 70:30; 80:20; 90:10; 100: 0; (3) Characterization of Kit-PBA are (tensile strength and elongation) edible film mechanical properties, swelling test and solubility test. The results showed that the higher the concentration of chitosan in the Kit-PBA edible film, the tensile and elongation strength values would increase while the degree of swelling and solubility would decrease.

QSAR Modeling of Compounds Derived from 1,2,3-Triazolopiperidine as DPP-4 Enzyme Inhibitors Using Semiempirical AM1 Anjar Purba Asmara; Reni Silvia Nasution; Rosi Minarty
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

This study aims to model the derived compounds of 1,2,3-triazolopiperidine using semiempirical method AM1 and determine the further derivation with the better IC50 values against DPP-4 enzyme theoretically. This research employed ChemDraw Pro 12 software for for 2D structural drawing, Hyperchem 8.0 for 3D modelling, and MLR statistical analysis for modeling QSAR equations. The semiempirical method was likely to be the appropriate platform to apply because the correlation coefficient of H1 NMR chemical shift between theoretical and actual value is relatively close, 0.8891. The multilinear regression analysis produced 4 equation models where the best one is equation 4 as detailed below:” IC50 = 875,5116 + (-7400,27*qH35) + (-0,00133* Eat.is) + (-3230,72* qN23) + (3,30277* µ)” n = 25; r2 = 0,594; Adjusted r2= 0,486; PRESS = 1,2× 104. Finally, the theoretically promising substituent was -CN possessing IC50 value = 1.61 nM.

PEMBELAJARAN KIMIA MENGGUNAKAN MODEL STUDENT TEAMS ACHIEVEMENT DIVISION (STAD) DAN TEAM GAMES TOURNAMENT (TGT) DITINJAU DARI KEMAMPUAN AWAL DAN GAYA BELAJAR Soebiyanto Soebiyanto; Mohammad Masykuri; ashadi ashadi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan metode Student Teams Achievement Division (STAD) dan Team Games Tournament (TGT), kemampuan awal, gaya belajar dan interaksinya terhadap prestasi belajar kognitif dan afektif siswa. Penelitian ini menggunakan metode eksperimen. Populasi adalah mahasiswa D-3 dan D-4 jurusan analis kesehatan tahun akademik 2012/2013 Fakultas Ilmu Kesehatan Universitas Setia Budi Surakarta. Sampel diperoleh melalui random sampling. Eksperimen dilakukan pada mahasiswa D-3 jurusan Analis Kesehatan menggunakan model STAD, mahasiswa D-4 jurusan Analis Kesehatan menggunakan model TGT, dan campuran kelas D-3 dan D-4 jurusan Analis Kesehatan sebagai kelas uji coba dengan identifikasi dan penyimpanan bahan kimia. Teknik pengumpulan data dengan menggunakan tes dan angket. Teknik analisis data menggunakan uji Kruskal-Wallis dengan taraf signifikansi 5%. Hasil analisis data menunjukkan bahwa, (1) ada pengaruh yang signifikan penggunaan model STAD dan TGT terhadap nilai kognitif (sig.=0,000),tetapi tidak pada nilai afektif (sg.=0,103), (2) ada pengaruh yang signifikan antara kemampuan awal dengan nilai belajar mahasiswa, (3) ada pengaruh yang signifikan antara gaya belajar terhadap nilai belajar kognitif (sig.=0,017), tetapi tidak pada nilai afektif mahasiswa (sig.=0,795), (4) ada interaksi yang signifikan antara penggunaan model STAD dan TGT dengan kemampuan awal terhadap nilai belajar mahasiswa, (5) ada interaksi yang signifikan antara penggunaan model STAD dan TGT dengan kemampuan awal terhadap nilai belajar mahasiswa, (6) ada interaksi yang signifikan antara kemampuan awal dengan gaya belajar terhadap nilai belajar kognitif (sig.=0,000) tetapi tidak pada nilai afektif mahasiswa (0,057), (7) ada interaksi yang signifikan antara penggunaan model STAD dan TGT dengan kemampuan awal dan gaya belajar terhadap nilai belajar mahasiswa.

Pollutant Concentration and Trajectory Patterns of PM2.5 including Meteo Factors in Jakarta City Dessy Gusnita; Nani Cholianawati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

PM2.5 particulate monitoring has been carried out in South Jakarta. The research objective is to examine the effect of meteorology and pollutant trajectories on PM2.5 conditions based on daily and seasonal patterns from January 2016 to December 2017. The sources of PM2.5 data come from DKI Jakarta BPLHD. The data analysis method uses excel to obtain daily and seasonal PM2.5 patterns (rainy season, transition season and dry season). PM2.5 pollutant trajectory patterns were obtained using a single-Particle Lagrangian Integrated (HYSPLIT) forward trajectory derived from NOAA (National Oceanic and Atmospheric Administration). Then the correlation between PM2.5 with meteorological parameters during 2016-2017 was analyzed. The results showed the maximum concentration of PM2.5 in 2016 occurred in the dry season (June-August) of 57.43 µg/m3 and decreased for 2017 by 50.84 µg/m3. Meanwhile, minimum PM2.5 concentration occurs during the rainy season (December-February) which is equal to 20 µg/m3 in 2016, in 2017 PM2.5 decreases to 15.5 µg/m3. The results of running model (HYSPLIT) forward trajectory of PM2.5 pollutants show when dry season pollutant leads to the western part of Jakarta city while the PM2.5 pollutant in rainy season moved from Jakarta city leads to the eastern region.

Influence Comparison of Precursors on LiFePO4/C Cathode Structure for Lithium Ion Batteries Luthfi Mufidatul Hasanah; Cornelius Satria Yudha; Soraya Ulfa Muzayanha; Diajeng Putri Suciutami; Atika Aulia Novita Sari; Inayati Inayati; Agus Purwanto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Electricity is the most energy demanded in this era. Energy storage devices must be able to store long-term and portable. A lithium ion battery is a type of battery that has been occupied in a secondary battery market. Lithium iron phosphate / LiFePO4 is a type of cathode material in ion lithium batteries that is very well known for its environmental friendliness and low prices. LiFePO4/C powder can be obtained from the solid state method. In this study the variables used were the types of precursors : iron sulfate (FeSO4), iron oxalate (FeC2O4) and FeSO4+charcoal. Synthesis of LiFePO4/C powder using Li:Fe:P at 1:1:1 %mol. Based on the XRD results, LiFePO4/C from FeSO4+charcoal shows the LiFePO4/C peaks according to the JCPDS Card with slight impurities when compared to other precursors. XRD results of LiFePO4/C with precursors of FeSO4 or FeC2O4 shows more impurities peaks. This LiFePO4/C cathode is paired with lithium metal anode, activated by a separator, LiPF6 as electrolyte. Then this arrangement is assembled become a coin cell battery. Based on the electrochemical results, Initial discharge capacity of LiFePO4/C from the FeSO4 precursor is 19.72 mAh/g, while LiFePO4/C with the FeC2O4 precursor can obtain initial discharge capacity of 17.99 mAh/g, and LiFePO4/C with FeSO4+charcoal exhibit initial discharge capacity of 21.36 mAh/g. This means that the presence of charcoal helps glucose and nitrogen gas as reducing agents.

Indeks Subjek dan Indeks Penulis Indeks Subjek Indeks Penulis
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Page 9 of 26 | Total Record : 255

7 8 9 10 11

Filter by Year

2016 2024

Filter By Issues

All Issue Vol 9, No 2 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 9, No 1 (2024): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 3 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 2 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 1 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 3 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 1 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 1 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 3 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 2 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 3 (2019): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 2 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 1 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 3 (2018): JKPK( Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 2 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 1 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 3, No 1 (2018): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 3 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 2 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 2, No 1 (2017): JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 1, No 1 (2016): JKPK (Jurnal Kimia dan Pendidikan Kimia) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota surakarta,

Jawa tengah

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota surakarta, Jawa tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota surakarta,

Jawa tengah

INDONESIA