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All Journal Prosiding Pendidikan Sains Alchemy Jurnal Penelitian Kimia Science and Technology Indonesia Communications in Science and Technology Jurnal Abdi Masyarakat Indonesia Jurnal Abdimas Kartika Wijayakusuma Inovasi Fisika Indonesia (IFI)
Teguh Endah Saraswati
Pusat Studi Jepang LPPM Universitas Sebelas Maret
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Mendorong Peminatan Pada Saintek Melalui Introduksi Program Super Sains Jepang di SMA Ramli, Murni -; Praseptiangga, Dana -; Saputro, Sulistyo -; Rinarto, Yudi -; -, Suciati -; -, Kusumawardani -; Saraswati, Teguh Endah
Prosiding Seminar Nasional Pendidikan Sains FKIP UNS Vol 1, No 1 (2014): Seminar Nasional Pendidikan Sains IV (SNPS IV 2014)
Publisher : Universitas Sebelas Maret Surakarta

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Abstract

Super Science High School Project (SSHs) dilaksanakan pertama kali di Jepang pada tahun 2002, dan setelah kurang lebih dua belas tahun pelaksanaanya, peminatan terhadap sains dan budaya meneliti di kalangan siswa SMA di Jepang meningkat secara signifikan. SSHs telah mengubah mainstream pembelajaran sains dari pembelajaran teksbook menjadi pembelajaran yang lebih menyenangkan dengan pendekatan konstruktivis dan berfokus pada kegiatan inkuiri siswa. Program ini di Jepang dilaksanakan dengan me-link-kan pembelajaran sains di SMA dengan laboratorium di perguruan tinggi, dan dukungan data dari Japan Science and Technology (JST), serta didanai sepenuhnya oleh pemerintah. Melihat perkembangan yang positif dari program tersebut, maka Pusat Studi Jepang Universitas Sebelas Maret telah melaksanakan riset terkait kebijakan dan implementasi SSHs di Jepang pada tahun 2013, dan tahun 2014 mulai mengkaji kemungkinan mengitroduksikan SSHs ke SMA di Surakarta dan sekitarnya. Artikel ini mengkaji prinsip-prinsip SSHs, dan kemungkinan mengadaptasikannya ke sistem pendidikan sains di Indonesia. Melalui SSHs diharapkan  pembelajaran dan peminatan sains di kalangan siswa dan guru SMA dapat meningkat, dan pada akhirnya akan melahirkan budaya berpikir saintifik, dan budaya meneliti.  
EFFECTIVENESS OF GELATIN EXTRACTED FROM CHICKEN CLAWS AS A NATURAL PRESERVATIVES FOR BEEF AND FISH Fadillah, Ganjar; Kusuma, Pramudita Putri; Saraswati, Teguh Endah
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Gelatin has been successfully extracted from chicken claws by acid hydrolysis method through four major stages of degreasing, demineralization, extraction and drying. The yield of extracted gelatin obtained from wet chicken claws was about 6.21% (w/w). The effectiveness of gelatin as preservative applied in beef and fish was physically, chemically and microbiologically studied by organoleptic analysis, peroxide test, bacteria inhibition test and number calculation, respectively. Organoleptic analysis by hedonic test shows there were significant differences for color and texture parameters between gelatin-coated samples and control samples at concentrations of 1:1 (w/w). Peroxide number analysis by iodometry indicates the use of gelatin in the preservation of meat and fish decreased the oxidation number. The result of inhibition test againts Staphylococcus aureus bacteria shows the gelatin concentration of 20% provided greatest halo zone diameter (inhibitory region) as 19.44±2.11 mm. The colony bacteria test shows the use of gelatin potentially inhibited the growth of bacteria up to 75%. Overall, the results conclude that gelatin extracted from chicken claws has the potential activities as a natural preservative for beef and fish. 
USE OF BATTERY CARBON AS ELECTRODES IN ARC DISCHARGE METHOD FOR FABRICATION OF CARBON-MODIFIED TiO2 Andhika, Isya Fitri; Hertiningtyas, Carissa; Aji, Ardian; Desy, Alifia; Saraswati, Teguh Endah; Patiha, Patiha
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Fabrication with carbon-modified TiO2by arcdischarge method in liquid medium has been studied. This research was performed in two steps including fabrication and characterization. This fabrication was done by arcdischarge method with graphite electrodes from dry cell batteries and liquid medium suspension of TiO2 in ethanol 30, 50 and 70%. A strong current was applied to electrode as 10-50 A (20-40 V). Nanocompositesformed on the liquid medium surface were collected and characterized using X-ray diffraction (XRD),scanning electron microscope (SEM) dan energy dispersive spectroscopy (EDS) to determine crystallinity, surface morphology and the constituent elements, respectively. XRD data shows that the most effective fabrication TiO2/Karbon byliquid medium in  ethanol 50%indicated from the formation of a new peak with high intensity of TiC on 2?= 36.02°. SEM data shows that the morphology of each aggregated TiO2/Karbon compared to the morphology of TiO2.In addition, EDS data shows the presence of the element carbon, titanium and oxygen in the same area indicating that the successful formation of composite material between TiO2 dan carbon.
Efficient degradation of methyl orange through photo-Fenton processes with MIL-100(Fe) modified Fe\(_3\)O\(_4\) (Fe\(_3\)O\(_4\)@MIL-100(Fe)) catalyst Puspitasari, Melani Puji; Pratama, Jeesica Hermayanti; Nugroho, Roshid Adi; Lestari, Witri Wahyu; Kemala, Yusnadia; Saraswati, Teguh Endah; Fansuri, Hamzah; Mukti, Rino Rakhmata; Suharbiansah, Rujito S. R.
Communications in Science and Technology Vol 9 No 2 (2024)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.9.2.2024.1493

Abstract

The research successfully synthesized a composite MIL-100(Fe) modified Fe3O4 (Fe3O4@MIL-100(Fe)) catalyst and examined its efficiency in degrading methyl orange (MO) through the photo-Fenton process compared to Fenton. The different percentages of Fe3O4 were integrated into MIL-100(Fe) and their effects on material characteristics and degradation capabilities were studied. Ex-situ synthesis involved varying Fe3O4 weight ratios (3, 10, and 20% w/w). Characterization techniques confirmed the integration of Fe3O4 and MIL-100(Fe) and revealed changes in surface area, pore size, and thermal stability with Fe3O4 addition. Meanwhile, removal tests showed promising results with the photo-Fenton process exhibiting maximum efficiency (95.51%) using 10% Fe3O4@MIL-100(Fe). This study provides valuable insights into developing efficient photo-Fenton catalysts for environmental remediation, particularly for addressing dye pollution in wastewater by highlighting the potential of Fe3O4@MIL-100(Fe) composites in this context.
Peningkatan Kualitas Produksi Ecoprint Corak Pewarna Alam melalui Pendampingan Proses Teknik Pewarnaan di UMKM Ecorilife.Id Wahyuningsih, Sayekti; Rahardjo, Sentot Budi; Lestar, Witri Wahyu; Saraswati, Teguh Endah; Widjonarko, Dian Maruto; Pramono, Edi; Naufal, Widyan Muhammad; Faradilla, Radianita
Jurnal Abdi Masyarakat Indonesia Vol 5 No 1 (2025): JAMSI - Januari 2025
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.1301

Abstract

Ecorilife.id merupakan salah satu UMKM yang bergerak pada bidang produksi ecoprint. Akan tetapi, terdapat permasalahan prioritas dari mitra, yaitu kualitas warna pada produksi kain ecoprint yang tidak stabil, meliputi pewarnaan dasar gelap dan terang, pengaruh teknis pewarnaan, dan penggunaan bahan-bahan pewarna alam. Solusi yang diharapkan mampu menyelesaikan permasalahan tersebut dilakukan melalui pendampingan proses produksi ecoprint pada Ecorilife.id. Kegiatan tersebut dilakukan dengan melakukan optimasi pada tahap pewarnaan dan mordanting menggunaan tawas (Al2(SO4)3), natrium asetat (Na-acetat), atau soda abu (Na2CO3) supaya produk ecoprint memiliki warna yang tidak mudah luntur serta bercampur secara sempurna dengan kain. Pewarna dasar kain dioptimasi dengan pewarna alam tingi dan jolawe. Tahapan pewarnaan ecoprint dilakukan dengan teknik steaming setelah tahap mordanting yang kemudian dikeringkan. Tahap pewarnaan dan pembentukan motif dilakukan dengan menggunakan motif yang muncul dari daun jati, daun akalipa, daun kalpataru, dan bunga cosmos. Fiksasi dilakukan dengan kapur untuk menghasilkan warna-warna ecoprint yang jelas. Hasil menunjukkan terciptanya produk ecoprint dengan kualitas warna tinggi yang dapat diamati melalui hasil pewarnaan yang terlihat detail, tidak berbaur, dan tidak luntur.
Enhanced Performance of Epoxy Resin-Polyimide Hybrid Composites with Aminated Carbon Nanofibers Filler Saraswati, Teguh Endah; Saputri, Dini Deviana; Raharjo, Wijang Wisnu
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.152-164

Abstract

Incorporating epoxy resin (ER) and polyimide (PI) with supporting filler will exhibit composites with exceptional mechanical, thermal, and electromagnetic shielding properties. This research investigates the preparation of aminated carbon nanofiber (CNF) as a filler in epoxy resin-polyimide hybrid composites. The preparation of the CNF filler was initially done by the purification process through dissolution in toluene and vacuum annealing at 800°C for 3 hours. The amine modification of CNF was done by reacting CNF with ethylenediamine, sodium nitrite, and sulfuric acid. The aminated CNF was then mixed with polyimide precursor (oxydianiline and pyromellitic dianhydride), becoming poly(amic acid)-filler. The last step was combining poly(amic acid)-filler with epoxy resin diglycidyl ether bisphenol A and polyaminoamide as hardener. The Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM) images of CNF showed the overlapped bundle fibers with the average fiber diameter around 100-120 nm. The successful amine modification was analyzed through Fourier-Transform Infrared (FTIR) analysis by the functional group emergence of C–N (∼1153 cm-1), N H (3737 cm-1), primary amine N–H (1534 cm-1), and better dispersion in water. The aminated filler shows a better distribution in the polymer matrices observed through macroscopic images and a higher hardness value. The FTIR of composites shows the increasing intensity in the N–H, C O amide, and C–H functional groups, indicating the highly covalent bonds between polymers and the aminated CNF filler. The TGA graph shows the recognizable termination of the polyimide and epoxy resin matrices as major components in the composite. The ER-PI composites with aminated CNF filler show improved mechanical properties in the hardness, tensile properties, and electromagnetic interference (EMI) shielding efficiency by around three-fold higher than composites with unmodified CNF filler.
IDENTIFIKASI REACTIVE OXYGEN SPECIES PADA PLASMA DIELECTRIC BARRIER DISCHARGE KONFIGURASI MESH-COPPER YANG DIRANGKAI SINGLE DAN DOUBLE MENGGUNAKAN OPTICAL EMISSION SPECTROSCOPY: Kata Kunci: Plasma DBD, spesies oksigen reaktif, spektroskopi optik emisi, rangkaian tunggal dan ganda Abdurrahman, Ahmad Faruq; Aprilia, Ayu; Zahar, Intan; Kusumandari, Kusumandari; Saraswati, Teguh Endah
Inovasi Fisika Indonesia Vol. 14 No. 1 (2025): Vol 14 No 1
Publisher : Jurusan Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v14n1.p13-20

Abstract

Penelitian ini bertujuan untuk mengidentifikasi reactive oxygen species (ROS) yang dihasilkan oleh plasma dielectric barrier discharge (DBD) pada konfigurasi rangkaian single dan double menggunakan Optical Emission Spectroscopy (OES). Variasi reaktor DBD digunakan untuk mengevaluasi spektrum emisi plasma. Hasil menunjukkan bahwa intensitas spektrum emisi pada rangkaian double secara umum lebih tinggi dibandingkan dengan Single. Produksi radikal OH dan O pada konfigurasi double lebih stabil, sementara emisi spektrum N₂ menunjukkan intensitas yang lebih besar dibandingkan dengan single. Stabilitas ini diuji lebih lanjut pada sampel dengan pH basa, yang menunjukkan penurunan pH menuju netral. Pengukuran suhu menunjukkan kestabilan selama proses berlangsung, menjadikan konfigurasi double DBD efektif untuk penelitian yang membutuhkan kestabilan suhu larutan. Hasil ini mengindikasikan bahwa rangkaian double dapat meningkatkan efisiensi produksi ROS dalam aplikasi plasma. Kata Kunci: Plasma DBD, spesies oksigen reaktif, spektroskopi optik emisi, rangkaian tunggal dan ganda Abstract This study aims to identify reactive oxygen species (ROS) generated by dielectric barrier discharge (DBD) plasma in single and double configurations using Optical Emission Spectroscopy (OES). Variations in DBD reactors were employed to evaluate the plasma emission spectra. The results showed that the emission intensity in the double configuration was generally higher than in the single configuration. The production of OH and O radicals in the double configuration was more stable, while the N₂ emission spectrum exhibited higher intensity compared to the single configuration. This stability was further tested on a sample with alkaline pH, which showed a decrease in pH toward neutrality. Temperature measurements demonstrated stability throughout the process, making the double DBD configuration effective for studies requiring solution temperature stability. These findings indicate that the double configuration can enhance ROS production efficiency in plasma applications. Keywords: DBD plasma, reactive oxygen species, optical emission spectroscopy, single and double configurations
Pelatihan Pembuatan Teknologi Kombinasi Pupuk Dasar Dengan Sistem Lepas Lambat (Slow Release) Melalui Pencampuran Zeolit Alam Pada Kelompok Tani Karangpandan Pramono, Edi; Wahyuningsih, Sayekti; Lestari, Witri Wahyu; Saraswati, Teguh Endah; Widjonarko, Dian Maruto; Raharjo, Sentot Budi; Rahayu, Rahayu; Venny, Venny; Basith, Abdul; Zetadini, Reza; Melina, Dika Caesar; Wulandari, Resa
Jurnal Abdimas Kartika Wijayakusuma Vol 4 No 2 (2023): Jurnal Abdimas Kartika Wijayakusuma
Publisher : LPPM Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jakw.v4i2.360

Abstract

Permasalahan kelangkaan pupuk dan penggunaan pupuk kimia sintetik secara berlebih sering muncul dalam pertanian. Hal ini terjadi pula pada sistem pertanian hortikultura di daerah Karangpandan Kabupaten Karanganyar. Perlu adanya edukasi tentang pentingnya manajemen penggunaan pupuk yang baik untuk menghemat dan menjaga kualitas lahan pertanian. Pada kegiatan ini tim pengabdi memberikan penyuluhan dan pelatihan pembuatan pupuk lepas lambat atau slow release guna memberikan pemahaman pemanfaatan material anorganik alam dalam penghematan pupuk kimia sintetik. Kegiatan ini diawali dengan pemaparan materi zeolit dan manfaatnya bagi pertanian dan dilanjutkan dengan pelatihan pembuatan pupuk kombinasi zeolit. Dari pelatihan ini diperoleh bahwa masyarakat menjadi paham akan bahaya pemakaian pupuk sintetik berlebih dan manfaat zeolit bagi pertanian. Pelatihan menjadikan anggota kelompok tani mampu menyiapkan pupuk dengan kombinasi zeolit. Dari survey juga diperoleh bahwa masyarakat tertarik untuk memanfaatkan teknologi campuran pupuk tersebut guna menghemat pemakaian pupuk. Dari kegiatan ini diharapkan teknologi yang dikembangkan di universitas mampu memberikan kontribusi bagi masyarakat tani khususnya pada teknologi pupuk slow release berbasis zeolit alam dan dapat diterapkan bagi kelompok tani pada skala yang lebih besar.
Co-Authors Abdul Basith Abdurrahman, Ahmad Faruq Alifia Desy, Alifia Aprilia, Ayu Ardian Aji, Ardian Carissa Hertiningtyas, Carissa Dana - Praseptiangga Dian Maruto Widjonarko Edi Pramono Faradilla, Radianita Ganjar Fadillah, Ganjar Hamzah Fansuri Isya Fitri Andhika, Isya Fitri Kemala, Yusnadia Kusumandari, Kusumandari Kusumawardani - - Lestar, Witri Wahyu Lestari, Witri Wahyu Melina, Dika Caesar Mukti, Rino Rakhmata Murni - Ramli Naufal, Widyan Muhammad Nugroho, Roshid Adi Patiha Patiha, Patiha Pramudita Putri Kusuma, Pramudita Putri Pratama, Jeesica Hermayanti Puspitasari, Melani Puji Rahayu Rahayu Saputri, Dini Deviana Sayekti Wahyuningsih Sentot Budi Rahardjo Sentot Budi Raharjo Suciati - - Suharbiansah, Rujito S. R. Sulistyo - Saputro Venny, Venny Wijang Wisnu Raharjo Wulandari, Resa Yudi - Rinarto Zahar, Intan Zetadini, Reza