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All Journal Journal of Engineering and Technological Sciences JPSE (Journal of Physical Science and Engineering) Jurnal Karinov Jurnal Graha Pengabdian Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)
Hartatiek, Hartatiek
Universitas Negeri Malang
Humanities Astronomy Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Physics Social Sciences Other

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PENGEMBANGAN MEDIA PEMBELAJARAN IPA DARI BAHAN BEKAS UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN HASIL BELAJAR SISWA MTS NURUL ULUM MALANG Hartatiek Hartatiek; Yudyanto Yudyanto; Winarto Winarto; Edi Supriana; Ahmad Taufiq; Markus Diantoro
Jurnal KARINOV Vol 1, No 2 (2018): Mei
Publisher : Institute for Research and Community Service (LP2M), Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1366.395 KB) | DOI: 10.17977/um045v1i2p%p

Abstract

Rendahnya motivasi dan hasil belajar siswa pada bidang studi IPA  disebabkan banyak faktor salah satunya adalah proses pembelajaran yang dijalani kurang bervariasi.  Untuk meningkatkan kualitas pembelajaran IPA  yang menyangkut proses dan produk perlu dikembangkan sarana belajar yang memadai yakni media IPA. Media IPA dapat dibuat dengan memanfaatkan bahan bekas pakai yang banyak di lingkungan sekitar sehingga dapat mengurangi limbah/sampah seperti botol plastik, kardus, kertas dan yang lain yang masih bisa dimanfaatkan. Metode yang digunakan untuk mencapai target dan luaran adalah pendidikan dan pelatihan (workshop) melalui proses pembimbingan dan pendampingan yang dilaksanakan dalam 5 tahap kegiatan. Tahap 1: pemberian materi perancangan media pembelajaran IPA. Tahap  2:  pelatihan  membuat media pembelajaran IPA. Tahap 3: mereview media pembelajaran yang telah dibuat peserta dan peyempurnaan. Tahap 4: melakukan ujicoba produk media untuk mengetahui kemudahan media itu digunakan dan melakukan penyempurnaan. Tahap 5: mengimplementasikan produk media pembelajaran IPA di kelas pembelajaran. Sedangkan pengembangan media dilakukan melalui metode penelitian dan pengembangan. Hasil yang dicapai dari kegiatan ini adalah guru IPA Madrasah Tsanawiyah (MTs) di Kota Malang mampu mengembangkan media pembelajaran IPA dari bahan bekas dengan kualifikasi sangat baik. Media pembelajaran yang dikembangkan efektif digunakan dalam pembelajaran karena dapat memotivasi belajar siswa dan meningkatkan hasil belajar dengan nilai rerata 91,3 dalam kualifikasi sangat baik.Kata Kunci: media pembelajaran IPA, bahan bekas, motivasi, hasil belajar
Pengaruh Nanosilika terhadap Kekerasan dan Porositas Nanokomposit HA-SiO2 Berbasis Batuan Onyx Bojonegoro Yudyanto Yudyanto; Yeyen Dwi Sugara; Hartatiek Hartatiek
JPSE (Journal of Physical Science and Engineering) Vol 1, No 1 (2016): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Hydroxyapatite (HA) is one of bioceramics which used in many biomedic applications. However, HA has poor mechanical properties. HA has be composited with material which has a good mechanical properties, such as nanosilica. In this study, synthesis HA was prepared by co-precipitation method. Base material to synthesis HA is onyx rock from Bojonegoro which contain 94.33 % Ca. While phosphate obtainable from Ammonium Dihydrogen Phosphate. The vickers hardness result using micro hardness vikers show that adding nanosilica is influence the mechanical properties of HA. The value of vikers hardness at adding nanosilica 10, 20, 30% respectively are 38.2; 42.3; 43.1 HVN while the porosity are 44.4; 40.7; 39.3 %. DOI: https://dx.doi.org/10.17977/um024v1i12016p013
Study of Surface Morphology and Porosity of Composite Scaffold Nanofiber PVA/CS/HA with Electrospinning Method Hartatiek Hartatiek; Nasikhudin Nasikhudin; Abdul Aziz Dwi Putra; Yudyanto Yudyanto
JPSE (Journal of Physical Science and Engineering) Vol 6, No 1 (2021): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

This research aims to compose nanofibers as a scaffold material in bone tissue engineering in terms of surface morphological properties and porosity. HA nanorod was prepared by the precipitation-ultrasonication method, while the PVA/CS/HA nanofiber composites were made by the electrospinning method using a static collector. HA was characterized by using XRD and SEM-EDX, while the PVA/CS/HA nanofiber composites used FTIR and SEM. The results show that HA nanorod has a crystalline size of 10.86 nm, crystallinity level of 52.38 per cent, and Ca/P ratio of 1.70. From the SEM image shows HA nanorod width of 11.6 nm and 97.53 nm in length and some of it still in the form of HA nanoparticles. The diameter and porosity of PVA/CS/HA nanofiber with addition of 0, 10, 20 per cent HA were 275, 212, 265 nm and 72.94, 69.49, 70.81 per cent, respectively.DOI: 10.17977/um024v6i12021p026
Grecoli Candy from Grape and Broccoli to Boost the Body's Immune System in the Middle of the COVID-19 Pandemic Fadhil Fathurochman; Hartatiek Hartatiek; Nadya Eka Agustin Ermalita; Lintang Miftahul Rizki; Norhayati Ahmad
JPSE (Journal of Physical Science and Engineering) Vol 7, No 1 (2022): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Grapes and broccoli have been scientifically proven to have high antioxidant content to increase the body's immune power compared to other fruits or vegetables. An immunomodulator is a compound that can regulate the activity and function of the immune system. The purpose of this study was to find out how to improve the body's immune system amid the COVID-19 pandemic and also to find out how to make food practically consumed to help increase the body's immunity during the COVID-19 pandemic. In this study, grapes and broccoli were extracted and then boiled at a temperature of ±85–100℃, then mixed with several ingredients, including sucrose, glucose, citric acid, gelatin, and flavourings. The antioxidant test was carried out using the Ferric Reducing Antioxidant Power (FRAP) method. After obtaining the antioxidant value, a spectrophotometric test was carried out to determine the maximum wavelength and absorbance value obtained. For the first sample, the results were 22.88 mmAAE/mL extract. In contrast, the second sample obtained results of 25.01mmAAE/mL extract.DOI: 10.17977/um024v7i12022p046
Oxygen Gas Vacuum Plasma Treatment on PVA/Chitosan/HAp Scaffold Nanofiber Hartatiek Hartatiek; Nada Shofura Faradyana; Maulia Ingganis Wuriantika; Yudyanto Yudyanto; Muhammad Nurhuda; Masruroh Masruroh; Dionysius Joseph Djoko Herry Santjojo; Norhayati Ahmad
JPSE (Journal of Physical Science and Engineering) Vol 7, No 2 (2022): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Scaffold in the form of nanofibers in bone tissue engineering applications continues to be developed. In this study, nanofibers are composed of PVA/CS/HAp with characteristics that can support medical applications such as bone tissue engineering. Vacuum plasma treatment was carried out to modify the nanofiber surface. The results of the morphological analysis showed that the vacuum plasma treatment of oxygen gas caused the surface of the PVA/CS/HAp nanofibers to become rougher with a change in diameter. Before the oxygen gas vacuum plasma treatment, the diameter of the nanofiber had a range of 83–365 nm. After the oxygen gas vacuum plasma treatment, the diameter had a size range of 105–293 nm. Furthermore, the vacuum plasma treatment carried out showed increased hydrophilic properties. The average contact angle values before and after oxygen gas vacuum plasma treatment were (39.0 ± 0.0005)° and (10.3 ± 0.0005)°, respectively.DOI: 10.17977/um024v7i22022p108
Development of Electrospun Polymer Nanofiber Membrane Based on PAN/PVDF as a Supercapacitor Separator Nasikhudin Nasikhudin; Fina Nur Azizah; Ulwiyatus Sa’adah; Markus Diantoro; Hartatiek Hartatiek; Ramesh T. Subramaniam
Journal of Engineering and Technological Sciences Vol. 55 No. 2 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.9

Abstract

Among various types of energy storage, the supercapacitor is regarded as the most promising device due to its long cycling life, good cycling stability, and high power density. A supercapacitor is generally composed of electrodes, electrolytes, and a separator. The separator is one of the most important components, serving to prevent internal short circuits between the anode and the cathode. Herein, a nanostructured-based separator in a PAN/PVDF nanofiber scheme is introduced for improving the electrochemical performance of the supercapacitor. Briefly, the membranes were produced via the electrospinning technique. All of the raw materials were blended in various compositions of PVDF for optimization purposes. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were carried out to identify the microstructure of the nanofibers. The electrochemical properties of the membrane were measured using galvanostatic charge-discharge (GCD). Based on GCD, it was shown that the PAN/PVDF 20 wt% membrane exhibited the optimum gravimetric capacitance at 54.104 Fg-1 as evidenced by a high porosity percentage. Thus, the PAN/PVDF nanofiber has good potential as a separator for application in supercapacitors.
Pemberdayaan Guru IPA MTS Dalam Penggunaan Laboratorium Virtual di Masa Pandemi Covid-19 Hartatiek Hartatiek; Siska Amalia; Yudyanto Yudyanto; Bakhrul Rizky Kurniawan; Ahmad Taufiq
Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Perguruan Tinggi Mengabdi: Berkarya dan Berinovasi Untuk Membangun Masyarakat Semakin Tangguh di Mas
Publisher : Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)

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Abstract

Pembelajaran IPA (sains) yang berlangsung saat ini masih di dominasi dengan proses pembelajaran yang cenderung hanya menyampaikan konsep atau produk sains, belum mengarah pada proses dan sikap ilmiah. Keadaan ini disebabkan belum adanya sarana dan prasarana laboratorium yang memadai sehingga proses sains belum dapat dilatihkan secara optimal kepada siswa. Laboratorium virtual sangat diperlukan untuk mengatasi peralatan laboratorium yang sangat terbatas dan untuk mendukung pembelajaran di masa pandemi covid-19 seperti saat ini. Kegiatan ini bertujuan membantu guru IPA Madrasah Tsanawiyah dalam menggunakan laboratorium virtual untuk mendukung proses pembelajaran. Metode yang digunakan untuk mencapai tujuan ini adalah pembimbingan dan pendampingan yang dilaksanakan dalam 2 tahap kegiatan. Tahap 1 praktikum virtual Hukum Ohm dan tahap 2 praktikum virtual rangkaian listrik seri-paralael. Hasil angket menunjukkan secara keseluruhan guru IPA Madrasah Tsanawiyah kota Malang sedikit (10%) yang mengalami kesulitan dalam membuka akses praktikum virtual. Untuk praktikum Hukum Ohm hasil tes dijawab dengan benar oleh 79% responden sedangkan untuk praktikum rangkaian listrik seri-paralel dijawab dengan benar oleh 73% responden dari kriteria keberhasilan 75%. Oleh karena itu masih diperlukan kegiatan pengabdian ini secara berkelanjutan untuk mendapatkan hasil yang optimal.Kata kunci: guru IPA MTs, laboratorium virtual, pandemi covid 19
PELATIHAN DAN IMPLEMENTASI ALAT PERAGA INOVASI BERBASIS RISET BAGI GURU IPA MTS KOTA MALANG Hartatiek, Hartatiek; Wuriantika, Maulia Ingganis; Yudyanto, Yudyanto; Supriana, Edi; Taufiq, Ahmad
Jurnal Graha Pengabdian Vol 5, No 1 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um078v5i12023p%p

Abstract

Minimnya penggunaan metode eksperimen dalam pembelajaran IPA disebabkan oleh jumlah alat peraga di sekolah yang terbatas. Penggunaan alat peraga inovasi dapat mengatasi masalah ini. Pelatihan mengenai pengembangan alat peraga sangat dibutuhkan bagi guru pengampu mata pelajaran IPA. Kegiatan ini bertujuan untuk membantu guru IPA berinovasi menggunakan alat peraga sederhana. Metode yang digunakan untuk mencapai tujuan ini adalah pembimbingan, pembuatan alat, uji coba alat, dan implementasi secara langsung dalam kelas. Hasil angket menunjukkan kesuluruhan peserta memberikan predikat sangat baik yang menunjukkan bahwa alat peraga yang dikembangkan sesuai dengan kebutuhan siswa dan layak digunakan. Nilai rata-rata yang didapatkan dari hasil angket yaitu 84.3, 95.1, dan 89,4 masing-masing untuk alat peraga Hukum Ohm, Resonansi, dan Hukum Hooke. Respon yang diberikan siswa pada implementasi alat peraga inovasi ini menunjukkan bahwa alat peraga inovasi ini layak digunakan dalam pembelajaran IPA.
The Utilization of Calcium in Watermelon Rind Extract for Osteoporosis Drug Agent Asiyah, Siti Nur; Prayoga, Bagus Putra; Hartatiek, Hartatiek; Ahmad, Norhayati
JPSE (Journal of Physical Science and Engineering) Vol 8, No 1 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um024v8i12023p001

Abstract

Calcium is one of the essential minerals for the body, especially in the elderly and pregnant women. Using natural materials containing calcium is very important, especially natural materials that are only used as waste, such as watermelon rind. Watermelon rind has a calcium of 31 mg. Therefore, it is very efficient to be used. The manufacture of this osteoporosis drug does not refer to calcium from watermelon rind extract alone. However, it is supported by other herbal ingredients such as rhizomes (ginger, curcuma, turmeric, and fingerroot). The method of extracting calcium from watermelon rind used the destruction method. After being extracted, the extraction and some mixed with the rhizomes were tested, such as calcium levels, XRF, XRD, and FTIR tests. The result of the study showed that all samples were confirmed to have calcium. High calcium content of 13.30 percent was found in the watermelon rind extract sample from watermelon fruit measuring 6 kg mixed with rhizomes. All samples' calcium level test results had a dominant value of 495 ppm.DOI: 10.17977/um024v8i12023p001
Co-Authors Abdul Aziz Dwi Putra Ahmad Taufiq Ahmad Taufiq Ahmad, Norhayati D. J. Djoko Herry Santjojo Fadhil Fathurochman Fina Nur Azizah Jayawarsa, A.A. Ketut Kurniawan, Bakhrul Rizky Lintang Miftahul Rizki Markus Diantoro Masruroh Masruroh Maulia Ingganis Wuriantika Muhammad Nurhuda Nada Shofura Faradyana Nadya Eka Agustin Ermalita Nasikh Norhayati Ahmad Norhayati Ahmad Prayoga, Bagus Putra Ramesh T. Subramaniam Siska Amalia Supriana, Edi Ulwiyatus Sa’adah Winarto Winarto Wuriantika, Maulia Ingganis Yeyen Dwi Sugara Yudyanto Yudyanto