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All Journal International Journal of Engineering Science and Technology Development (IJEST) Mechatronics, Electrical Power, and Vehicular Technology Jurnal Tapis : Jurnal Teropong Aspirasi Politik Islam International Conference on Engineering and Technology Development (ICETD) Jurnal Agroteknos Jurnal Intelektualita: Keislaman, Sosial, dan Sains Insisiva Dental Journal : Majalah Kedokteran Gigi Insisiva E-Dimas: Jurnal Pengabdian kepada Masyarakat ARISTO Machine : Jurnal Teknik Mesin Al Mi’yar: Jurnal Ilmiah Pembelajaran Bahasa Arab dan Kebahasaaraban JURNAL KAJIAN TEKNIK MESIN Societas : Jurnal Ilmu Administrasi dan Sosial Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi International Journal of Robotics and Control Systems Jurnal Gagasan Hukum Jurnal Ilmiah Teknik (JUIT) International Journal Science and Technology (IJST) International Journal of Ethno-Sciences and Education Research Jurnal Teknik Mesin Sinergi JURNAL PENGABDIAN PENDIDIKAN MASYARAKAT (JPPM) Indonesian Journal of Physics (IJP) e-Jurnal Inovasi Pembelajaran Sekolah Dasar Jurnal Pengabdian Masyarakat Bangsa AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Ihsanika : Jurnal Pendidikan Agama Islam JOSEE : Journal of College Student's Intellectual Journal of Applied Science and Advanced Engineering Almikanika e-Jurnal Inovasi Pembelajaran Sekolah Dasar
Rudi Irawan
Universitas Gunadarma
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Potensi Pengontrolan Suhu Ruangan Menggunakan Sistem Penukar Panas Dalam Tanah Irawan, Rudi; Therisno, Ricky; Susanto, Ksatrio
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2023)
Publisher : Universitas Ibn Khaldun Bogor

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

Abstract

Salah satu biaya operasi yang signifikan dari bangunan-bangunan adalah pengaturan suhu udara ruangan agar tercapai kondisi ruangan yang nyaman. Telah banyak diketahui bahwa umumnya suhu dalam tanah pada siang hari lebih rendah dibanding suhu udara ruangan, sementara pada malam hari suhu dalam tanah lebih hangat dari suhu ruangan. Penelitian ini dilakukan untuk meneliti potensi suhu tanah sebagai sumber untuk menurunkan atau menaikkan suhu ruangan. Tujuan utama penelitian ini adalah untuk mengetahui seberapa besar penurunan dan kenaikan suhu udara setelah melalui Ground Cooling Heat Exchanger (GCHE) dengan perangkat lunak Ansys. Sebagai data lokasi untuk penelitian digunakan data daerah Bandung, Jawa Barat, Indonesia. Pengaruh GCHE terhadap suhu udara dipelajari dalam penelitian ini. Hasil-hasil simulasi menunjukkan bahwa GCHE dapat dengan efektif menurunkan dan menaikkan suhu berkisar 5oC jika dibandingakn dengan suhu udara ketika masuk GCHE. Hasil dari penelitian ini dapat digunakan untuk mengatur suhu dalam ruangan dari sebuah bangunan dengan cara yang lebih alami, ramah lingkungan dan hemat energi dengan mengacu pada parameter kenyamanan ASHRAE-55, sehingga bermanfaat untuk perancangan sistem heating, ventilation, and air conditioning (HVAC). Kata kunci :  ground cooling; HVAC; kenyamanan; tanah; udara ruang.
Optimization of Dehumidification Air Flow Distribution in Temulawak Tray Dryer with Computational Fluid Dynamics Ridwan; Farul Apriansa; Rudi Irawan
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6664

Abstract

Temulawak (Curcuma xanthorrhiza Roxb.), a member of the Zingiberaceae family, has long been recognized as a medicinal plant with a moisture content approximately 80-90%. The high moisture content of temulawak renders it challenging to store for extended periods without drying. Temulawak is susceptible to heat damage due to the potential for thermal degradation of its internal components. Accordingly, it can be concluded that low-temperature and low-air-humidity drying conditions are required. Furthermore, one of the most suitable methods is the use of a dryer that incorporates a dehumidification process. The objective of this research is to develop a temulawak dryer design and simulation variations of the incoming velocity of air flow to obtain the most optimal drying chamber by incorporating a vertical airflow channel. A design and simulation for a temulawak dryer were created using the 2022 version of SolidWorks software (flow simulation modul). The design started from drawing two-dimension, then three-dimension, and determining boundary condition and meshing. A fluid temperature of 35.7°C and a relative humidity (RH) of 22% were used to model the drying process at varying airflow velocities of 1.5 m/s, 2 m/s, and 2.5 m/s. The drying chamber, with dimensions of 676 mm x 406 mm and height of 806 mm, was designed using the type AISI 304 and achieved the most optimal airflow distribution results at a velocity of 2.5 m/s, exhibiting a relatively higher fluid temperature than the other two airflow velocity variation.
Effectiveness of Green Tea Extract in Maintaining Viability of Avulsed Tooth Fibroblasts in Rats Rahmawan, Dzanuar; Fharadiba, Alfinta Azzahra; Irawan, Rudi; Pertami, Sawitri Dwi Indah
Insisiva Dental Journal: Majalah Kedokteran Gigi Insisiva Vol. 15 No. 1 (2026): May
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/di.v15i1.27541

Abstract

Tooth avulsion represents a severe traumatic dental injury in which a tooth is forcibly expelled from its alveolar socket, potentially resulting in significant damage to the surrounding periodontal structures. The success of replantation procedures is primarily determined by the condition and survivability of periodontal ligament (PDL) fibroblast cells. To maintain cellular integrity before replantation, the use of an appropriate storage medium is essential. Green tea (Camellia sinensis) is a herbal plant rich in flavonoid compounds that possess antioxidant and tissue-regenerative capabilities, particularly in stimulating fibroblast proliferation. A concentration of 70% green tea extract has been identified as the most beneficial for promoting wound recovery. This investigation sought to assess how effectively green tea extract could sustain fibroblast cell viability obtained from avulsed teeth of male Wistar rats. A total of thirty-six teeth harvested from male Wistar rats were allocated into one control group and two experimental groups, each subsequently subdivided based on immersion duration of 30 and 60 minutes. PDL-derived fibroblast cells were obtained through versene-trypsin isolation, followed by staining using 0.4% trypan blue solution and cell counting via hemocytometer under light microscopy. Results demonstrated that 30-minute immersion in 70% green tea extract yielded the highest fibroblast viability (90.35%; p = 0.004) relative to all other groups. Although both 70% and 100% concentrations successfully maintained fibroblast viability, the 70% concentration proved more effective across both observation time points.
Co-Authors -, Joko Abdul Rahman Afrida Nurmalasari, Afrida Afrizal Riyantono Afzeri Tamsir Afzeri Tamsir Afzeri Tamsir Afzeri Tamsir Afzeri Tamsir Afzeri Tamsir AGUNG PRATAMA, RIZKY Agus Pahrudin Ahmad Firdaus A. Zaidi Ahmad Firdaus A. Zaidi Ahmad Firdaus A. Zaidi Ahmad Rofii Ahmad Suhaedi Al - Farid, Ahlan Husaini Alfasha, Muhammad Zidan Alfitri Alfitri Alhuda, M Raffi Andries Lionardo, Andries Anggil Viyantini Kuswanto Anindya, R.A.Sekar Ciptaning Apriansa, Farul Ardiansyah, Irwan Ari Legowo Ari Legowo Ariandi, Rian Dwi Arief Goeritno Arwin Arwin Azama, Irham Muhammad Baharudin Budiman Busono Soerowirdjo Chayati, Nurul Cokorda Prapti Mahandari Dedy Haryanto Dena Hendriana Desilia Purnama Dewi Dian Wulandari Eko Hadi Purwanto Fadillah, Afan Farul Apriansa Fery Setiawan Fharadiba, Alfinta Azzahra Firmansyah, Riyan Harjoyo Harjoyo Husni Thamrin Ida Ayu Putu Sri Widnyani Jeremi Badar, Johanes K, G.B Heru Kasutjianingati Kasutjianingati, Kasutjianingati Khairunnisa Khairunnisa Kuncoro, Heru Luluk Dianarini Mansurdin, Mansurdin Mohamad Yamin Mohammad Khafid Muamar Al Qadri Muhamad Lutfi Mulya Juarsa Nor Hilmi Mohamad Nor Hilmi Mohamad Nur‘ainingsih, Dyah Oktaviandi, Ryan Pertami, Sawitri Dwi Indah Prakosa, Basma Rosandi Putri Aulia Raden Mohamad Herdian Bhakti Rahmawan, Dzanuar Rasyid Habibi, Said Ratika Dewi Ridwan Ridwan Ridwan Ridwan, Ridwan Ritzkal, Ritzkal Riza Muhida Roy Waluyo Rudianto, Haris Rulhendri Rulhendri Siti Zulaiha Suharto Suharto Susanto, Ksatrio Syaiful Syaiful Sya’bani, Rafi Fajar Syihabuddin Syihabuddin Therisno, Ricky Tri Wijaya Putra, Doni Utami, Priska Restu Wahyu Caesarendra Wicaksono, Nugroho Adi Widyastuti Widyastuti Winda Astuti Winda Astuti Yayan M.A Nurbayan Zulfi Diane Zaini