Rizal Fahmi
Laboratorium Kimia Bahan Alam, Jurusan Kimia, FMIPA, Universitas Andalas Padang, Kampus Unand Limau Manis, Padang 25163

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STRUCTURE CHARACTERIZATION OF FLAVONOID Aglycone FROM ETHYL ACETATE EXTRACT OF Rhodomyrtus tomentosa (AIT) HASSK Fahmi, Rizal; Manjang, Yunazar; -, Dachriyanus; Lajis, Nordin
Jurnal Riset Kimia Vol 4, No 2 (2011): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v4i2.127

Abstract

 ABSTRACT A flavonoid aglycone, 5-hydroxy-3,3’,4’,5’,7 pentamethoxy - flavone (Combretol), an antibacterial compound of ethyl acetate extract from the leaves of Rhodomyrtus tomentosa. The structure of this compound was established based on spectroscopic analyses and comparison with the related compound. The structure characterization of this compound will be discussed.  Keywords: Rhodomyrtus tomentosa, flavonoid aglycone, structure characterization 
AN ANALYSIS OF GRICE’S MAXIMS VIOLATION IN DAILY CONVERSATION Fahmi, Rizal
Journal of Languages and Language Teaching Vol 4, No 2 (2016)
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (58.457 KB)

Abstract

This research were aimed at finding out what factors that cause the violation of Gricean maxims and which one of Gricean maxims that is often violated in daily conversation of EZC students of FPBS IKIP MATARAM. There were 15 active EZC students were taken as subject of the study. In deciding samples, purposive sampling technique was used. The samples were 4 male students and 5 female students. In the data analysis, descriptive qualitative method was used. For collecting data, there were 2 techniques used: observation and interview. After the data were collected, the recorded conversations (the length of each conversation is about 5 until 10 minutes) were sorted and translated. The result showed that the maxims violated were maxim of quantity (30 times), maxim of quality (20 times), maxim of manner (10) and maxim of relevance (5 times). The reason for violating the maxims approved to be caused by cultural factor and social distance factor. In conclusion, the maxim that dominantly being violated was maxim of quantity.  
PENGEMBANGAN POTENSI RHODOMYRTONE SEBAGAI BAHAN AKTIF SEDIAAN TOPIKAL Fahmi, Rizal; Rullah, Kamal; Rahmat, Rosita Dewi; Lucida, Henny; Manjang, Yunazar; Hj. Lajisc, Nordin; Dachriyanus, .
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 6, No 1 (2012)
Publisher : Indonesian Research Gateway

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Abstract

Rhodomyrtone, an antibacterial constituent was isolated from the active fraction of theleaves extract of Karamuntiang, Rhodomyrtus tomentosa (Aiton) Hassk. In this presentstudy, the topical cream formula of rhodomyrtone 2% in vanishing cream was evaluated byin vitro and in vivo preclinical test. The in vitro test was peformed against Staphylococcusaureus ATTC 6538 and Staphylococcus epidermidis ATTC 12228 by using disk agardiffusion method, while the in vivo test was evaluated on the surface of skin infection area ofthe rabbit caused by Staphylococcus aureus. Both these tests were guided bychloromphenicol 2% cream as a comparison. The topical cream of rhodomyrtone 2% invanishing cream showed diameters of inhibition zones of 15 mm and 26 mm towardStaphylococcus aureus and Staphylococcus epidermidis respectively. These diffusions werelower than inhibition zones of chloromphenicol 2% cream which has 30 mm and 32 mm forthe same bacterias in the same condition. The in vivo test showed that rhodomyrtone 2%topical cream can reduced that skin infection and did not caused irritation on the testedrabbits.ABSTRAKRhodomyrtone adalah suatu konstituen antibakteri fraksi aktif ekstrak daun karamuntiang,Rhodomyrtus tomentosa (Ait) Hassk. Pada penelitian ini telah dilakukan uji preklinisterhadap krim sediaan topikal Rhodomyrtone 2% dalam vanishing cream. Uji preklinissecara in vitro menggunakan media agar dan Staphylococcus aureus ATTC 6538 danStaphylococcus epidermidis 12228 sebagai bakteri uji, sedangkan secara in-vivo dilakukanterhadap kulit pada kelinci yang di infeksi dengan Staphylococcus aureus. Kedua uji inimenggunakan krim kloromfenikol 2% sebagai pembanding. Krim sediaan topikalrhodomyrtone 2% dengan basis vanishing cream memberikan diameter hambatan berturutturut15 mm dan 26 mm terhadap Staphylococcus aureus dan Staphylococcus epidermidis.Difusi ini lebih rendah dibanding sediaan krim kloromfenikol 2% yang memberikan diameterhambatan 30 mm dan 32 mm, masing-masing untuk Staphylococcus aureus danStaphylococcus epidermidis pada kondisi yang sama. Selanjutnya uji secara in vivomenunjukkan bahwa krim sediaan topikal rhodomyrtone 2% dapat mengurangi infeksi kulitdan tidak menimbulkan iritasi pada kelinci percobaan.
PENGEMBANGAN POTENSI RHODOMYRTONE SEBAGAI BAHAN AKTIF SEDIAAN TOPIKAL Fahmi, Rizal; Rullah, Kamal; Rahmat, Rosita Dewi; Lucida, Henny; Manjang, Yunazar; Hj. Lajisc, Nordin; Dachriyanus, .
Jurnal Farmasi Indonesia Vol 6, No 1 (2012)
Publisher : Jurnal Farmasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35617/jfi.v6i1.93

Abstract

Rhodomyrtone, an antibacterial constituent was isolated from the active fraction of theleaves extract of Karamuntiang, Rhodomyrtus tomentosa (Aiton) Hassk. In this presentstudy, the topical cream formula of rhodomyrtone 2% in vanishing cream was evaluated byin vitro and in vivo preclinical test. The in vitro test was peformed against Staphylococcusaureus ATTC 6538 and Staphylococcus epidermidis ATTC 12228 by using disk agardiffusion method, while the in vivo test was evaluated on the surface of skin infection area ofthe rabbit caused by Staphylococcus aureus. Both these tests were guided bychloromphenicol 2% cream as a comparison. The topical cream of rhodomyrtone 2% invanishing cream showed diameters of inhibition zones of 15 mm and 26 mm towardStaphylococcus aureus and Staphylococcus epidermidis respectively. These diffusions werelower than inhibition zones of chloromphenicol 2% cream which has 30 mm and 32 mm forthe same bacterias in the same condition. The in vivo test showed that rhodomyrtone 2%topical cream can reduced that skin infection and did not caused irritation on the testedrabbits.ABSTRAKRhodomyrtone adalah suatu konstituen antibakteri fraksi aktif ekstrak daun karamuntiang,Rhodomyrtus tomentosa (Ait) Hassk. Pada penelitian ini telah dilakukan uji preklinisterhadap krim sediaan topikal Rhodomyrtone 2% dalam vanishing cream. Uji preklinissecara in vitro menggunakan media agar dan Staphylococcus aureus ATTC 6538 danStaphylococcus epidermidis 12228 sebagai bakteri uji, sedangkan secara in-vivo dilakukanterhadap kulit pada kelinci yang di infeksi dengan Staphylococcus aureus. Kedua uji inimenggunakan krim kloromfenikol 2% sebagai pembanding. Krim sediaan topikalrhodomyrtone 2% dengan basis vanishing cream memberikan diameter hambatan berturutturut15 mm dan 26 mm terhadap Staphylococcus aureus dan Staphylococcus epidermidis.Difusi ini lebih rendah dibanding sediaan krim kloromfenikol 2% yang memberikan diameterhambatan 30 mm dan 32 mm, masing-masing untuk Staphylococcus aureus danStaphylococcus epidermidis pada kondisi yang sama. Selanjutnya uji secara in vivomenunjukkan bahwa krim sediaan topikal rhodomyrtone 2% dapat mengurangi infeksi kulitdan tidak menimbulkan iritasi pada kelinci percobaan.
Pengembangan E-Modul Berbasis Web Pada Mata Pelajaran Pembuatan Busana Industri Kelas XI SMK Dermawan, Dermawan; Fahmi, Rizal
Jurnal Pedagogi dan Pembelajaran Vol 3, No 3 (2020)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jp2.v3i3.29123

Abstract

Rendahnya hasil belajar siswa yang disebabkan karena kurangnya media pembelajaran yang dapat memfasilitasi siswa dalam belajar sehingga siswa kesulitan dalam memahami materi pembelajaran. Penelitian ini bertujuan untuk mengembangkan E-modul berbasis WEB pada mata pelajaran pembuatan busana industry kelas XI SMK. Jenis penelitian ini adalah Research and Development (R&D) yang menggunakan model pengembanagan Four-D dalam mengembangkan E-modul. Subjek penelitian ini adalah seluruh siswa kelas XI Jurusan Tata Busana. Data pada penelitian ini dikumpulkan melalui metode observasi dan wawancara. Instrument yang digunakan dalam penelitian ini adalah kuesioner. Teknik analisis data yang digunakan yaitu deskriptif statistik kualitatif dan deskriptif statistik kuantitatif. Hasil penelitian yaitu validitas E-modul berbasis web dinyatakan valid dengan nilai 0,84 > 0,67, Praktikalitas E-modul berbasis web dinyatakan sangat praktis dengan nilai rata-rata 88 dan berdasarkan respon siswa E-modul dinyatakan sangat praktis dengan nilai rata-rata 84. Berdasarkan analisis data, maka dapat disimpulkan bahwa E-modul berbasis web dapat diterapkan dalam proses pembelajaran dan efektif meningkatkan aspek pengetahuan siswa dilihat dari hasil tugas pembuatan busana rumah anak yang dihasilkan.