Judul: Aktivitas Inhibitor Siklooksigenase 2 Secara In Vitro dan Kandungan Flavonoid Enam Aksesi Kunyit Hasil Budidaya
Abstrak: Curcuma domesticais kind of medicinal plant which has inhibitory activity of cyclooxygenase 2 (COX-2). Its has many promising line, there are Nagrak, Wonogiri, Ciemas, BPTO, Turina 1 and Turina 2. Secondary metabolic wich has potency as antiinflamantory is flavonoid. The aim of the present study was to examined the best activity from Six Curcuma domestica promising line cultivated in Nagrak Regency as In vitro inhibitory COX- 2 and that flavonoid content. This research included extraction used etanol 70% as solvent, in vitro COX-2 inhibition sceering assay, determinated of flavonoid content used colorimetric methode, and determined the coleration of both statistically. C. domestica promising line Nagrak has highest inhibitory activity and flavonoid content were 55.84% and 2.252 mg/g QE. Analysis used SPSS PASW Statistic 18.0 programme showed that flavonoid compound was not significant with inhibitory activity COX 2.
Keyword: antiinflamantory, Curcuma domestica, cyclooxygenase 2, flavonoid

Judul: Bioaktivitas Antioksidan dan Antiinflamasi Secara In Vitro serta Kandungan Kurkuminoid Temulawak dan Kunyit Asal Sukabumi
Abstrak: Curcuma xanthorrhiza and Curcuma domestica are kind of medicinal plants which have many health benefits. Both of them have curcuminoid content which is useful as an antioxidant and anti-inflamatory. In this study, ethanol extracts of C. xanthorrhiza and C. domestica promising lines from Sukabumi, Indonesia were investigated for the presence of curcuminoids, antioxidant and anti-inflamatory activities. HPLC method were used to determined curcuminoids content. The antioxidant (radical scavenging) potential of the samples was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical method. While for the anti-inflamatory activity, the in vitro cyclooxygenase 2 (COX2) inhibition method was used. The curcuminoid content of C. xanthorrhiza and C. domestica were 31.27 mg/g and 66.32 mg/g, respectively. IC50 values for DPPH radical scavenging activity were 81.99 μg/mL and 73.31 μg/mL, with C. domestica having lowest value and most potent than C. xanthorrhiza. Percent inhibition values for COX2 inhibitor activity were 74.84 % and 67.96 %, with C. domestica having the highest value. In this study, the ethanol extracts of C. domestica promosing line from Sukabumi of Indonesia exhibited most in curcuminoids content, antioxidants properties and anti-inflamatory activity than C. xanthorrhiza promosing line.
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Judul: Alat Perekam Data Hujan dengan Mode Hemat Daya
Abstrak: Pengukuran intensitas hujan dapat dilakukan dengan beberapa pendekatan, seperti menggunakan perekam data hujan otomatis (automatic rain recorder). Data curah hujan yang terukur oleh tipping bucket akan tersimpan dalam SDcard setiap kejadian hujan terjadi. Penggunaan arduino sebagai komponen utama dipilih karena perangkat open source yang mudah dimodifikasi. Beberapa komponen arduino yang dapat dimodifikasi adalah ATmega dengan konsumsi daya sebesar 12 mA pada 3 volt serta 17 mA pada 5 volt. Adapun FTDI mengkonsumsi daya sebesar 20 mA pada 5 volt. Voltage regulator mengkonsumsi daya sebesar 38 mA pada 5 volt, 64 mA pada 9 volt, 103 mA pada 12 volt, selain itu led mengkonsumsi 1 mA pada 5 volt. Komponen yang dapat dihilangkan pada arduino antara lain FTDI, voltage regulator, serta led. Pengurangan komponen ini bertujuan agar daya tahan baterai menjadi 6.5 kali lebih hemat dibandingkan arduino standar. Setelah bagian bagian tersebut dihilangkan maka total konsumsi daya yang diperlukan oleh mikrokontroler on board arduino adalah 12 mA saat 3 volt dan 17 mA saat 5 volt saat mode kerjanya. Hasil pengujian menunjukkan bahwa pada penggunaan mode sleep lebih efisien daya dibandingkan mode power save. Mode sleep membantu cara penghematan daya pada pembuatan alat perekam data hujan Penggunaan metode ini jika diasumsikan kejadian hujan hanya terjadi selama tiga jam dalam sehari maka dengan menggunakan baterai sebesar 400 mAh dengan tegangan 3 volt maka alat perekam data hujan ini dapat hidup selama 15 Hari….
Keyword: Arduino, Power save, Rain, Automatic recorder, Tipping bucket, Geophysics and Meteorology, Rain fall, Model penakar hujan, Arduino promini, Arduino uno