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Rahmayanti, Handika Dany
Politeknik Negeri Media Kreatif
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Aktivitas Fotokatalitik TiO2 yang Dilapiskan pada Polipropilena Berbentuk Lembaran dan Butiran Sutisna, Sutisna; Rokhmat, Mamat; Wibowo, Edy; Rahmayanti, Handika Dany; Khairurrijal, Khairurrijal; Abdullah, Mikrajuddin
Jurnal Matematika dan Sains Vol 22 No 1 (2017)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The sheet and granule of polypropylene (PP) have been used as the support material for TiO2 catalyst. The TiO2 powder was coated to the polymer surface using a combination of electrostatic and heating methods (for the PP sheet) and thermal milling method (for PP granule). The photocatalytic testing of catalysts conducted on a 300 ml solution of Methylene Blue (MB) with initial concentration of 25 ppm. Under solar ilumination, the catalyst sheets have a higher photocatalytic activity than the catalyst granules.
PHYSICAL DISTANCING ALARM SYSTEM BASED ON PROXIMITY SENSOR AND MICROCONTROLLER Elfi Yuliza; Riska Ekawita; Vionita Vionita; Muhammad Khafid Fauzi; Vera Fuspita Sari; Handika Dany Rahmayanti
Indonesian Physical Review Vol. 4 No. 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i2.85

Abstract

Keeping an interaction distance between 1 to 2 m is one of the health protocols during the COVID-19 pandemic. This attempt was made to reduce the spread of the Coronavirus. On the other hand, this health protocol activity is often overlooked, whether intentionally or not. According to the mechanism of the Coronavirus spreading in the form of droplets that comes out during communication, sneezing, or coughing, maintaining distance can be the best effort to minimize the transmission of this virus. Therefore, the availability of a simple, accurate and user-friendly physical distancing alarm system could be a solution in the implementation of this health protocol. In this study, a prototype of a physical distancing alarm based on a distance sensor and a microcontroller in the form of an identity card was developed. Several steps are conducted in developing of this system, namely designing the instrumentation system and testing the performance of the system. System performance is tested through variations in the distance and angle of the objects. The measurement results show that the system can detect objects in front of the sensor up to a distance of 2.8m and an angle of  for a distance of 1m. The measurement using different angles of objects was performed for objects on the left and right sides of the sensor. In addition, a warning alarm will be on when the distance of the object exceeds the allowed distance.  
Preliminary Study of the Effect of Technology Integration on the Growth of the Printing Industry in Indonesia Haryasena Gusti Andayu; Handika Dany Rahmayanti
Jurnal Ilmiah Publipreneur Vol 9, No 1 (2021): Jurnal Ilmiah Publipreneur
Publisher : Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/jip.v9i1.267

Abstract

Digital globalization in the economic sector is no exception in the printing industry. For hundreds of years the print media dominated for the dissemination of information. However, currently the dominance of the print media industry is now in danger of being shifted along with technological developments. This study shows how the growth of the print industry in Indonesia for several years. Based on the results of the study, the number of printing industries from 2011-2015 experienced a decline in almost all regions of Indonesia, including the provinces of West Java, East Java, DKI Jakarta, Banten, Kalimantan, Central Java and Sumatra. The decline in numbers occurred in the printing industry of newspapers, magazines, books and advertising. Especially for the packaging industry, it did not experience a significant decline and was relatively stable.
STUDY OF DEFECT ON LLDPE PLUG FOR TELON OIL PRODUCTS USING A HAITIAN MOLDING INJECTION MACHINE 1600MA AT PT X Mochammad Mahardika; Handika Rahmayanti; Abdul Majid
Jurnal Ilmiah Publipreneur Vol 8, No 2 (2020): Jurnal Ilmiah Publipreneur
Publisher : Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/jip.v8i2.160

Abstract

The type of plastic packaging that is popular among the public is bottle packaging, plastic bottle packaging always has a bottle cap. Some people only know that the part of the bottle cap is only on the outer cap, even though the plastic bottle cap consists of two types, namely the outer cap (cap) and the inner cap (plug). The plastic material used to make the plug is Linear Low Density Polyethylene (LLDPE), a telon oil plug is produced using an injection molding machine, by inserting plastic pellets into the hopper and then heating it by the barrel, plastic pellets that have melted will be injected into the mold ( print). In the process of making the telon oil plug, a defect was found. From the observation, it is known that several types of defects that occur during the LLDPE oil plug production process include black dot, flashing, and unmould / short shot. Defects that occur during the telon oil plug production process are caused by damage, contamination, and mismatches in the engine parameter settings. The purpose of this study is to determine the causes and solutions of defects that occur in LLDPE telon oil plugs with the HAITIAN 1600MA injection molding machine at PT X. Some solutions are made to reduce defects that occur in telon oil LLDPE plugs is to clean the material reservoir, repair or replace the mold, clean the hopper before loading the material, and set up the barrel parameter 180-230oC, inject pressure 60 bar, holding pressure 30 bar, speed 17.8 seconds.
ANALYSIS OF PAPER ABSORPTION FROM DRIED LEAVES AS POTENTIAL OF FUTURE ORGANIC SANITARY PADS Handika Dany Rahmayanti; Septia Ardiani; Nurul Akmalia
Jurnal Ilmiah Publipreneur Vol 7, No 1 (2019): Jurnal Ilmiah Publipreneur
Publisher : Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/jip.v7i1.69

Abstract

The use of waste, as well as unused goods, becomes something that has a sales value which is very necessary to preserve the environment. One example is the use of dry leaf waste which can be transformed into goods of economic value to the people who use them. The transformation of dry waste into pulp is one of the efforts that can be made to overcome the waste problem. The pulp from the dried leaf waste can then be turned into a paper which can then be used as an alternative to sanitary pads.
STUDY OF DEFECT ON 180 ML HDPE BOTTLES YOGURT PRODUCTS WITH SMC B11 EXTRUSION BLOW MACHINE AT PT X Tommy Prasetya Kana; Handika Dany Rahmayanti; HM Didik
Kreator Vol 8, No 1 (2021): Kreator
Publisher : Politeknik Negeri Media Kreatif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46961/kreator.v4i1.306

Abstract

The type of plastic packaging that is popular in the community is bottle packaging. The plastic material that is generally used to make plastic bottles is High Density Polyethylene (HDPE). The plastic bottle industry in Indonesia usually uses a blow molding process in its production process, where the blow molding process consists of injection blow molding, extrusion blow molding and stretch blow molding. The SMC B11 machine is one of the extrusion blow molding machines used to produce plastic bottle packaging. In producing workpieces, this machine still produces several products that are not in accordance with company standards, including in terms of production cycle times and product defects. Defects or defects that are often encountered include the appearance of spots, bent parison which causes the bottle to bend (the bottle body is thin one side) and blow pin which causes the thread to not fit.Keywords— Bottle, Plastic, Defect, Extrussion Blow Molding
PELATIHAN PENGGUNAAN PLATFORM GAMIFIKASI EDUKATIF GUNA PENGUATAN PENDIDIKAN DI ERA PANDEMI COVID 19 BAGI GURU SEKOLAH DASAR DAN MENENGAH DI KOTA DEPOK Yuyun Khairunisa; Yeni Nurhasanah; Sari Setyaning Tyas; Septia Ardiani; Handika Dany Rahmayanti
Jurnal Abdi Insani Vol 9 No 1 (2022): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v9i1.489

Abstract

The use of distance learning technology (e-learning) needs to be addressed so that learning objectives can be achieved effectively even though the activities are not carried out face-to-face in the classroom. One way to increase the focus and interest of students in learning activities is the use of elements in games in e-learning learning media or also known as gamification. Most of the gamification platforms are licensed or paid, so Teachers have to pay extra. The solution to this problem is to provide teachers with training and mentoring on the use of the online gamification platform where the application is free and simple to use. The purpose of this community service activity is to introduce and improve the digital competence of teachers and educators in using online gamification platforms (on the network) as a learning medium. The method used in service activities is the method of training and mentoring. The results of this community service activity are in the form of stages of making learning media using the wordwall.net gamification platform, namely opening the wordwall.net page, selecting Sign Up, setting up myActivities display, making Maze Chase, and evaluating/viewing student work. The conclusion of this activity is the increase in the digital skills of the activity participants, game and quiz-based learning media products, as well as practical guidebooks for using the gamification platform. The material presented is useful for teachers and educators in preparing digital teaching materials based on games and quizzes.
Kajian Struktur Serat dan Porositas Masker Udara Handika Dany Rahmayanti; Rahmawati Rahmawati; Euis Sustini; Mikrajuddin Abdullah
Jurnal Fisika Vol 8, No 1 (2018)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v8i1.13966

Abstract

There are 6 brands of air masks on the market that are Evo med, Nexcare carbon, Nexcare daily, Indomaret, Borma and Evo club. All masks on the market have 3 layers. Based on the results of microscopy testing showed that the fiber diameter image of all mask brands in layer 2 is smaller than layer 1 and 3. Generally, all brands of masks show a uniform fiber size distribution. From the surface porosity measurements, Borma masks have a larger porosity than other masks in layers 1, 2 and 3 ie 60.64%, respectively; 42.95% and 63.58%. The results show that the difference in mask price in the market does not show the quality standards of different mask filters. Furthermore, the results of this study may contribute to the development of research on masks.
SIFAT OPTIK DAN EFISIENSI COUNTER ELECTRODE YANG RAMAH LINGKUNGAN MENGGUNAKAN BAHAN GRAFIN DAN CARBON NANOTUBES PADA APLIKASI DYE SENSITIZED SOLAR CELL Fatiatun Fatiatun; Firdaus Firdaus; Ahmad Khoiri; Kusnanto Mukti Wibowo; Handika Dany Rahmayanti; Apit Fathurohman
JURNAL SPEKTRA Vol 8, No 2 (2022): SPEKTRA: Jurnal Kajian Pendidikan Sains
Publisher : Program Studi Pendidikan Fisika, FITK, UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/spektra.v8i2.310

Abstract

Dalam penelitian ini, counter electrode (CE) dibuat dengan mengkompositkan bahan grafin dengan carbon nanotubes (CNTs) yang diaplikasikan untuk dye sensitized solar cells (DSSCs). Bahan CNTs yang digunakan berasal dari limbah minyak kelapa yang melimpah di alam dan tergolong ramah lingkungan. Jenis grafin yang dipakai dalam pembuatan CE ini merupakan reduced graphene oxide (rGO) yang diproduksi dari larutan graphene oxide (GO). Hasil komposit CNTs dan rGO difabrikasi di atas substrat fluorine tin oxide (FTO) dengan menggunakan metode spray. Tujuan dari penelitian ini yaitu untuk memperbaiki sifat optik CE dengan mengkompositkan grafin dengan CNTs. Sampel CE untuk aplikasi DSSCs yang digunakan dalam penelitian ini ada ada 3 yaitu GO dengan surfaktan sodium 1,4-bis(neopentyloxy)-3- (neopentyloxycarbonyl)-1,4-dioxobutane-2-silphonate (TC14) yang diproduksi sendiri (TC14-GO), TC14-rGO dan komposit TC14-rGO dengan CNTs (TC14 rGO-CNTs hybrid). Berdasarkan hasil pengukuran dengan menggunakan ultraviolet-visible spectroscopy (UV-Vis) menunjukkan hasil bahwa sampel TC14 rGO/CNTs memiliki nilai transmitansi yang paling tinggi yaitu 89% dan band gap yang rendah sebesar 3.96 eV. Berdasarkan hasil tersebut, komposit antara grafin dengan CNTs (TC14 rGO-CNTs hybrid) menunjukkan hasil sifat optik yang paling bagus dibandingkan dengan sampel-sampel CE yang lain dan sesuai untuk dikembangkan dalam penelitian selanjutnya. Hal ini juga sesuai dengan hasil efisiensi yang diperoleh melalui pengukuran dengan menggunakan solar simulator. Sampel TC14 rGO-CNTs hybrid menunjukkan hasil efisiensi yang paling tinggi yaitu 0.0124%.
Karakterisasi Sifat Penyerapan Nata de Coco Kering Terpadatkan Terhadap Bolu Rahmayanti, Handika Dany; Ardiani, Septia; Akmalia, Nurul; Kartika, Tipri Rose; Suryani, Meuthia
Jurnal Fisika Vol 12, No 1 (2022)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v12i1.33429

Abstract

Pada penelitian ini kami mensintesis nata de coco (NDC) dengan metode standar. Kemampuan daya serap air (absorbsi) dari NDC kering terpadatkan ini juga kami selidiki. Pada pengujian absorbs kami juga membandingkan dengan NDC komersial yang ada di pasaran. Guna mengetahui prospek komersial, absorsivitas air silika gel juga diuji. Dari hasil pengujian menunjukkan bahwa NDC kering terpadatkan mampu menyerap kelembaban air yang sebanding dengan absorpsivitas silika gel komersial. Ketiga merek NDC yakni NDC pada sampel merek B, C, dan F menunjukkan penyerapan lebih tinggi dibandingkan silika gel dan nilai ini terus mengalami kenaikan mulai hari ke-1 sampai hari ke-5. Jumlah air yang terserap oleh sampel nata de coco pada hari ke-5 yakni sebesar 15,087% (B); 21,86% (C) dan 22,664% (F). Nilai ini lebih besar bila dibandingkan penyerapan oleh silika gel pada bolu yakni sebesar 15,532%. Dari hasil tersebut maka dapat disimpulkan bahwa nata de coco mempunyai daya serap yang cukup tinggi.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Majid Adryans Ahmad Khoiri Akmalia, Nurul Apit Fathurohman Ardiani, Septia Cempaka, Putri Surya Edy Wibowo Elfi Yuliza Elfi Yuliza Euis Sustini Fatiatun, Fatiatun Firdaus Firdaus Haryasena Gusti Andayu HM Didik Ikhwannanda, Dias Jasmine, Annisa Kartika, Tipri Rose Khairurrijal Khairurrijal Kusnanto Mukti Wibowo Lukman Nulhakim Mamat Rokhmat Mikrajuddin Abdullah Mikrajuddin Abdullah Mochammad Mahardika Muhammad Khafid Fauzi Mulyana, Raina Munir, Rahmawati Munir, Rahmawati Nadya Amalia Nadya Amalia Novitri Hastuti Novitri Hastuti, Novitri Nurul Akmalia Rahmawati Rahmawati Rahmawati, Rahmawati Riska Ekawita Sari Setyaning Tyas Septia Ardiani Septia Ardiani Sparisoma Viridi Suryani, Meuthia Tommy Prasetya Kana Trifajar Yurmama Supiyanti Vera Fuspita Sari Vionita Vionita Widiargo, Antonius Edi Yakob, Freddy Yeni Nurhasanah Yurmama, Tri Fajar Yurmama, Trifajar Yuyun Khairunisa