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All Journal Jurnal Edukasi dan Penelitian Informatika (JEPIN) Jurnal Rekayasa Mesin IKAT : The Indonesian Journal of Southeast Asian Studies Humani (Hukum dan Masyarakat Madani) Klorofil: Jurnal Penelitian Ilmu-Ilmu Pertanian Jurnal ADMINISTRATOR Jurnal Farmasi Galenika
Kurniawan, Rendy
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Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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PERTUMBUHAN DAN PRODUKSI JAMUR TIRAM PUTIH (Pleurotus ostreatus) PADA PERBEDAAN KOMPOSISI MEDIA TANAM Nunilahwati, Haperidah; Syafrullah, Syafrullah; Kurniawan, Rendy
Klorofil: Jurnal Penelitian Ilmu-Ilmu Pertanian Vol 15, No 1 (2020): Klorofil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jk.v15i1.3725

Abstract

Fungi are plants that cannot carry out photosynthesis because they do not have chlorophyll. The purpose of this study was to determine the ratio of tankos and bran media as a planting medium to the growth and production of oyster mushroom (Pleurotus ostreatus) plants. The research was conducted from May to July 2019 in Talang Buluh Village, Talang Kelapa District, Banyuasin Regency, South Sumatra Province. The research method used a completely randomized design (CRD) with 5 treatments and 5 replications. The results showed that the composition of the growing media 70% tankos, 27% bran, 3% lime was the best treatment for the growth and production of oyster mushrooms with a fresh weight of 320.26 g/baglog. 
Indonesian Twitter User Sentiment towards PeduliLindungi App in Strengthening Smart Living during COVID-19 Kurniawan, Rendy; Rachmawati, Rini
IKAT: The Indonesian Journal of Southeast Asian Studies Vol 6, No 2 (2023): January
Publisher : Center for Southeast Asian Social Studies (CESASS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ikat.v6i2.89824

Abstract

The COVID-19 pandemic has changed lifestyles in counties and cities in just a few months by putting technology at the forefront of fighting the pandemic. Handling COVID-19 can show technological disparities and inequalities between different cities, given the COVID-19 condition that continues to plague various towns and districts in Indonesia. One of the steps to handle it, namely providing national-scale public services with a COVID-19 tracker application called PeduliLindungi. Using the PeduliLindungi app in each city and Regency is a form of Smart City implementation in Indonesia, especially in the Smart Living dimension. PeduliLindungi is a must-have app for residents who move or enter public facilities to create a safe and healthy city during the COVID-19 pandemic. Given the WFH trend, Twitter has become an abundant data source to collect public opinion regarding PeduliLindungi applications needed to improve service quality. This study aims to analyze Twitter users’ sentiments towards the PeduliLindungi app usage in the context of strengthening smart living. Sentiment analysis was performed in this study using the VADER Sentiment towards tweets dataset collected over two different periods. The results show that the Indonesian government effectively uses Twitter to answer questions and share COVID-19 and PeduliLindungi-related information with the public. Negative sentiment was expressed more towards the PeduliLindungi app than positive sentiment due to public unrest over data security and constraints encountered in using the PeduliLindungi app.
Analisis Kualitas Pelayanan Pembuatan SIM Di Polresta Kota Palu Kurniawan, Rendy; Amalia, Miftah; Mardhatilla, Zakia; Mastang, Mastang; Mustainah, Mustainah; Kurnia, Intam; Haryono, Dandan
Jurnal ADMINISTRATOR Vol. 6 No. 2 (2024)
Publisher : Sekolah Tinggi Ilmu Administrasi (STIA) Pembangunan Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55100/administrator.v6i2.90

Abstract

Membahas tentang kualitas pelayanan pembuatan SIM di Kota Palu. Penelitian ini menggunakan metode penelitian fieid reseacrh ( penelitian lapangan ) dengan teknik pengumpulan data berupa trianggulasi data dengan cara pengumpulan data berupa observasi, wawancara, dan dokumentasi untuk mendapatkan keabsahan data yang diperoleh dengan pendekatan deskriptif kualitatif. Beberapa hasil dari penelitian ini antara lain (1) Dalam proses pembuatan sim, pemohon diberikan kemudahan untuk mendapatkan SIM (2) Bagi masyarakat yang ingin melakukan perpanjangan sim, polresta palu menyediakan aplikasi SIM sinar untuk membantu mempermudah masyarakat
Legal Protection of the Nation's Cultural Identity in the Era of Globalisation Yulianah, Yuyun; M Rozi, Mumuh; Raihan Azhari Kusworo, Fuji; Hadi Aulia, Salsabila; Kurniawan, Rendy
Hukum dan Masyarakat Madani Vol. 15 No. 1 (2025): May
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/humani.v15i1.12161

Abstract

Indonesia is blessed with an extraordinary and diverse cultural wealth, stretching from Sabang to Merauke. Each region has unique traditions, customs, languages, arts and local wisdom that reflect the nation's identity. This cultural wealth is a valuable heritage that has been passed down from generation to generation and has become an integral part of Indonesian life. In the era of globalisation, Indonesian culture is faced with various complex challenges. The heavy influence of foreign culture, liberalisation, westernisation, and internationalisation is eroding the existence of the nation's culture. This can threaten the national identity and cultural heritage that has been preserved for centuries. This research uses a normative juridical method to examine various efforts to preserve Indonesian culture in the era of globalisation. This approach is carried out by analysing various laws and regulations, legal norms, and rules relating to cultural preservation. Preserving Indonesian culture is the shared responsibility of all Indonesian people. This preservation effort must be carried out comprehensively and sustainably, by involving various parties, from the government, the community, to the younger generation.
Pengembangan Front-End Aplikasi Lomba Mewarnai menggunakan HTML Canvas dengan Library React JS Kurniawan, Rendy; Sholva, Yus; Pratama, Enda Esyudha
JEPIN (Jurnal Edukasi dan Penelitian Informatika) Vol 11, No 2 (2025): Volume 11 No 2
Publisher : Program Studi Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jp.v11i2.97723

Abstract

Aplikasi mewarnai digital (digital drawing) merupakan platform interaktif yang memungkinkan anak-anak mewarnai secara langsung melalui antarmuka web yang dirancang menggunakan HTML Canvas dan React JS. Front-end aplikasi ini berperan penting sebagai jembatan interaktif antara pengguna dan sistem back-end, sehingga kegiatan mewarnai dapat dilakukan secara digital. Kegiatan mewarnai sering dijadikan ajang lomba yang telah popular di kalangan anak-anak. Namun, lomba mewarnai yang biasanya dilakukan secara konvensional memiliki beberapa kendala, seperti resiko kerusakan pada kertas karya peserta, waktu penjurian yang lama, serta kurangnya transparansi dalam pengumuman hasil lomba. Untuk mengatasi masalah tersebut, penelitian ini mengembangkan platform lomba mewarnai berbasis website dengan fokus pada perancangan front-end yang mendukung fungsionalitas mewarnai digital. Pengembangan dilakukan dengan pendekatan metode Agile. Hasil penelitian menunjukkan bahwa aplikasi yang dikembangkan telah berfungsi dengan baik, sebagaimana diuji menggunakan metode black box testing. Pengujian System Usability Scale (SUS) menunjukkan skor rata-rata 83,5 untuk peserta dan 90 untuk panitia, dengan skor keseluruhan 86,75 yang mengindikasikan bahwa aplikasi ini sangat berhasil dan layak digunakan sebagai platform lomba mewarnai digital.
Synthesis and Characterisation of Biolubricants Castor Oil (Ricinus communis L.) Using a Homogeneous Catalyst for Hydraulic Engine Applications Suherman, Suherman; Muktar, Muharnif; Kurniawan, Rendy; Abdullah, Ilmi; Mawardi
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2025): Volume 20, Nomor 2, Agustus 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i2.6669

Abstract

Lubricants are essential products that help reduce surface friction and improve machine efficiency. Lubricating oil consists of 90% base oil and 10% additives. Due to the presence of low molecular weight compounds, mineral-based lubricants exhibit a lower flash point and are not biodegradable, unlike natural oils with equivalent viscosity. Currently, mineral-based lubricants still dominate the global market, yet their environmental drawbacks and reliance on depleting petroleum resources have raised growing concerns. Although several studies have reported the potential of vegetable oils as biolubricants, challenges remain in terms of oxidative stability, viscosity control, and production scalability, which limit their widespread industrial application. The high dependence of the industrial and automotive sectors on lubricants, coupled with the depletion of petroleum reserves, drives the need to seek sustainable alternatives to support sustainable green economic development. This study aims to produce biolubricants from castor oil (Ricinus communis L.) using NaOH catalyst through an esterification method. Esterification was carried out by mixing the oil with alcohol in a molar ratio into a 250 ml three-neck flask, then heating it to 180 °C for 4 hours with 1–2% NaOH catalyst and a methanol-to-oil molar ratio of 1:4. The results showed that the highest values of kinematic viscosity, viscosity index (VI), and density were 28.9 mm²/s, 90.3, and 884.9 kg/m³, respectively. The optimum biolubricant yield was obtained with 2% catalyst (80%). The produced biolubricant met the ISO VG 32 standard, which is widely applied in hydraulic oils, for turning, drilling, and sawing processes. These findings highlight that castor oil-based biolubricants can serve as a sustainable alternative to petroleum-based lubricants; however, further research on long-term stability, wear resistance, and large-scale production remains necessary to bridge the gap towards industrial adoption.
The Medication Related Burden Pada Pasien Hipertensi: Studi Kasus Di Apotek Afina Yogyakarta Kurniawan, Rendy; Supadmi, Woro; Qifari Nasrun, Rahmar; Hastuti, Dwi
JURNAL FARMASI GALENIKA Vol 11 No 3 (2024): Jurnal Farmasi Galenika Vol 11 No 3
Publisher : Universitas Bhakti Kencana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70410/jfg.v11i3.344

Abstract

Hypertension is the cause of death in 31.5% (1.39 billion). The prevalence of hypertension is increasing in low- and middle-income countries. The prevalence of hypertension in Yogyakarta reached 35.8%, higher than the national figure (31.7%).  Hypertension requires long-term treatment which can cause a burden of treatment on patients. The purpose of this study was to determine the characteristics, treatment patterns and treatment burden of hypertension patients at Afina Pharmacy Yogyakarta. This study is an observational  descriptive approach. Data collection was carried out through direct interviews with patients about the burden of treatment with the Living With Medicine Questionaire (LMQ) questionnaire guide. The sample was in accordance with the inclusion and exclusion criteria totaling 31 respondents.  Data were analyzed using the descriptive  method.The results showed that 26 respondents (83.8%) were in the age group> 46 years, with 23 respondents (74.2%) of whom were female, the respondent's education level was at the SMA-PT level, namely 20 respondents (64.5), and 22 respondents (71%) had a previous history of hypertension.Based on patient therapy patterns, 22 respondents (70.9) used Calcium Channel Blocker class antihypertensives, namely Amlodipine and 18 respondents (58.1%) used Angiotensin Reseptor Blocker class antihypertensives, namely Candesartan 16 mg. Medication Related Burden of hypertension patients at Afina Yogyakarta Pharmacy is in the category of low burden 7 respondents (22.6%) and moderate burden 24 respondents (77.4%).
Co-Authors Abdullah, Ilmi Amalia, Miftah Dandan Haryono Dwi Hastuti Enda Esyudha Pratama, Enda Esyudha Hadi Aulia, Salsabila Haperidah Nunilahwati, Haperidah Intam Kurnia M Rozi, Mumuh Mardhatilla, Zakia Mastang, Mastang Mawardi Muktar, Muharnif Mustainah Mappatoba Qifari Nasrun, Rahmar Raihan Azhari Kusworo, Fuji Rini Rachmawati Sholva, Yus Suherman, Suherman Syafrullah, Syafrullah Woro Supadmi Yuyun Yulianah