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All Journal Farmasains : Jurnal Ilmiah Ilmu Kefarmasian EduTeach: Jurnal Edukasi dan Teknologi Pembelajaran Jurnal Computer Science and Information Technology (CoSciTech)
fitri farida
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Computer Science & IT Education Medicine & Pharmacology

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Uji Aktivitas Penangkapan Radikal Bebas Ekstrak Etanol Daun Mangkokan (Nothopanax scutellarium (Burm.f) Merr.) Menggunakan Metode DPPH (1,1-Difenil-2-Pikrilhidrazil) dengan Variasi Suhu Pengeringan fitri farida; any guntarti
Farmasains : Jurnal Ilmiah Ilmu Kefarmasian Vol. 4 No. 2 (2017)
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (548.377 KB) | DOI: 10.22236/farmasains.v4i2.3362

Abstract

Mangkokan leaves contains flavonoids that are known as natural antioxidant source. The aim of this study is to find the effect of drying temperature variations towards free radical scavenging activity of mangkokan leaves. Mangkokan leaves macerated with 96% ethanol and dried at 40oC, 50oC, and 60oC. Then were macerated with ethanol 96%. Antioxidant activity tested by DPPH method and quercetin was used as positive control. Dry shrinkage with temperatures at 40oC, 50oC, and 60oC were: (9.25 ± 0.276)%; (8.76 ± 0.348)% and (7.97 ± 0.372)%, respectively. Water content at 40oC, 50oC and 60oC were: (5.13 ± 0.575)%; (4.53 ± 0.512)% and (4.04 ± 0.575)%, respectively. The antioxidant potency of 96% ethanolic mangkokan leaves by ES50 value at drying temperatures 40oC, 50oC, 60oC and quercetin were (1.75 ± 0.058); (2.39 ± 0,089); (5.38 ± 0,078) mg/ml and (9.16x10-4 ± 4.36x10-5) mg/ml. Ethanolic extract of mangkokan leaves which dried at 40oC has biggest radical DPPH scavenging activity but much weaker than quercetin.
Pengembangan E-Modul Menggunakan Kvisoft Flipbook Mata Pelajaran Dasar-Dasar Kejuruan Teknik Elektronika di SMK Taruna Pekanbaru Khairul Anshari; Fitri Farida; Febrelly Sabatini
EduTeach : Jurnal Edukasi dan Teknologi Pembelajaran Vol 5 No 1 (2024): Edisi Januari 2024
Publisher : Unit Pelaksana Praktik Kependidikan Terpadu Fakultas Keguruan dan Ilmu Pendidikan Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/eduteach.v5i1.6822

Abstract

Modul yang digunakan oleh guru di SMK Taruna Pekanbaru masih belum mendorong minat belajar mandiri bagi siswa, karena modul yang digunakan belum terkonsep dalam bentuk yang utuh serta materi yang diberikan belum sepenuhnya sesuai dengan kompetensi dasar pada kurikulum yang diterapkan di sekolah. Media yang digunakan masih menggunakan media papan tulis dan metode ceramah sehingga siswa merasa jenuh dan tidak memiliki motivasi untuk belajar. Penelitian ini bertujuan untuk menghasilkan E-Modul berbasis Flipbook pada mata pelajaran dasar-dasar kejuruan teknik elektronika yang valid dan praktis. Penelitian menggunakan metode Research and Develepment dengan model 4-D yang di modifikasi menjadi model 3-D, yakni Define, Design dan Development. Subjek penelitian adalah siswa kelas X TE SMK Taruna Pekanbaru. Instrumen penelitian berupa angket validitas dan angket praktikalitas. Hasil yang diperoleh berupa data validitas E-Modul dari ahli media dan ahli materi dengan kategori sangat valid dan hasil praktikalitas dari respon guru dan siswa dengan hasil sangat praktis.
Rancangan sistem monitoring kelembapan tanah pembibitan kelapa sawit berbasis internet of things Effendi, Noverta; Dedi Handoko; Fauzan Azim; Fitri Farida
Computer Science and Information Technology Vol 5 No 2 (2024): Jurnal Computer Science and Information Technology (CoSciTech)
Publisher : Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/coscitech.v5i2.7572

Abstract

Indonesia is one of the largest palm oil producers in the world, so Indonesia has a role in meeting global demand for palm oil. Indonesia has extensive palm oil plantations in various states, producing around 43 million tons of palm oil. In general, Pekanbaru Riau, in the higher areas the soil is of the Red Yellow Podzolic (PMK) type, while in the lower areas the soil is peat type. PMK mineral soil has a thickness of organic soil material < 60 cm and some of it is still experiencing decomposition so it still contains a lot of fiber so that the agroecosystem on this soil will experience many problems, especially in dry areas with high slopes so that crop cultivation farmers have difficulty measuring soil moisture. Plant seeds cannot live and develop well if soil moisture does not meet requirements. For this reason, it is necessary to fertilize the seeds regularly, on a schedule and have sufficient water available. Based on the problems above, an oil palm tree nursery system was developed using the (Internet of Things) concept. Remote monitoring and control of the tool can be done via an Android application and real time internet access. From the test results of the two tools, namely the soil moisture monitoring system and the moist detector analyzer, the data obtained from soil measurements on oil palm seedlings shows very close measurement values, even from several experiments the data shown is very close, only 1-2%. Of course, from the data displayed the researcher made a comparison with the appropriate/unsuitable information as a reference for the suitability of this tool to be used
Co-Authors Any Guntarti Dedi Handoko Effendi, Noverta Febrelly Sabatini Ida Ayu Putu Sri Widnyani Khairul Anshari