Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 189-208 of 471
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Improved utilisation of renewable resources: New important derivatives of glycerol
(2007)Glycerol, 1,2,3-propane triol, has been a well known chemical for more than two centuries. It was discovered in 1783 by the Swedish chemist Carl Wilhelm Scheele when treating natural oils with alkali materials. He noticed ... -
In Vitro Activities of Panduratin A against Clinical Staphylococcus Strains
(2009)In vitro antistaphylococcal activities of panduratin A, a natural chalcone compound isolated from Kaempferia pandurata Roxb, were compared to those of commonly used antimicrobials against clinical staphylococcal isolates. ... -
In vitro activity of xanthorrhizol against Streptococcus mutans biofilms
(2006)Aims: We determined the effect of xanthorrhizol (XTZ) purified from the rhizome of Curcuma xanthorrhiza Roxb. on the Streptococcus mutans biofilms in vitro. Methods and Results: The biofilms of S. mutans at different phases ... -
Increasing Amount And Entrapment Efficiency Of Chitosan-Ketoprofen Nanoparticle Using Utrasonication Method With Varied Time And Amplitude
(2013)Chitosan nanoparticles loaded by ketoprofen have been prepared by sonication and centrifugation methods. Preliminary tests have been carried out by conducting optimization condition of sonication including amplitude and ... -
Indonesian Kepel Fruit (Stelechocarpus burahol) as Oral Deodorant
(2012)Kepel (Stelechocarpus burahol) fruit has been known to have efficacy as an oral deodorant in Java Island, Indonesia for a long time. The research aimed on Indonesian Herbal Kepel as deodorant agent for reducing fecal ... -
Indonesian Sidaguri (Sida rhombifolia L.) as Antigout and Inhibition Kinetics of Flavonoids Crude Extract on the Activity of Xanthine Oxidase
(2009)Sida rhombifolia L., or Sidaguri in Indonesian, is a traditional medicinal plant with potential as a remedy against gout. The earlier research reported that flavonoids crude extract from this plant could in vitro inhibit ... -
Infant Cries Identificaton by Using Codebook As Feature Matching, And MFCC As Feature Extraction
(2005)In this paper, we focused on automation of Dunstan Bab) Language. This system uses MFCC as feature e\lraetion and codebook as ti!oture matching. The codebook or clusters is made from the proceeds of all the buhy's cries ... -
Influence of the Madden-Julian Oscillation on Indonesian rainfall variability in austral summer
(2009)The impact of the Madden-Julian Oscillation (MJO) on Indonesian rainfall variability in austral summer is analysed by using the daily station rain gauge data and Tropical Rainfall Measuring Mission precipitation data for ... -
Inhibisi Senyawa Aktif dari Biji Mahoni (Swietenia mahagoni Jacq) sebagai Uji Anti Kanker
(2007)Telah diketahui bahwa mahoni merupakan salah satu tumbuhan yang banyak dikenal dan dibudidayakan di Indonesia. Kayu mahoni daun kecil (Swietenia mahagoni Jacq) dipergunakan untuk venir dekoratif, kayu lapis, mebel, panil, ... -
INHIBITION KINETICS OF Sida rhombifolia L. EXTRACT TOWARD XANTHINE OXIDASE BY ELECTROCHEMICAL METHOD
(2014)Sida rhombifolia L. is a traditional medicinal plant that has been known with potential as antigout. The previous research suggested that flavonoids crude extract of S. rhombifolia had an inhibitory activity toward xanthine ... -
Insecticidal constituents from rhizomes of Zingiber cassumunar and Kaempferia rotunda
(2010)Rhizomes from 18 different species of the Zingiberaceae were screened for insecticidal constituents against neonate larvae of the pest insect, Spodoptera littoralis. Extracts from rhizomes of Kaempferia rotunda and Zingiber ... -
An integrated optical instrumentation for measuring NO2 gas using one dimensional photonic crystal
(2011)Air pollution is one of main problems in human health, especially in big cities. There are five pollutants material which is indicated as a sources of air pollution, one of them is nitrogen oxide (NO2). The proper environmental ... -
Intramolecular Fatty Acid Distribution in Milk Fat Triglycerides of Monkeys
(1974)Pancreatic lipase hydrolysis was used to determine the distribution of fatty acids in the milk triglycerides of four species of monkeys and of human milk. The patterns of the major fatty acids were generally similar in all ... -
Isolasi Bakteri Mananolitik dan Karakterisasi Mananasenya
(2008)isolate RA05 has the highest mannanase activity which isolated from copra soil waste from Pasaman, West Sumatra. -
Isolasi dan karakterisasi amilase dari kapang alkalotoleran asal limbah cair tapioka
(2003)a total of 6 fungi of growing at pH 9 and 2 isolates on pH 10 with amylolytic indexes of 0.07-1.42 have been isolated from cassava strach liquid waste. -
Isolation and characterization of a thermophilic lipase from Bacillus thermoleovorans ID-1
(1999)thermophilic microorganism, Bacillus thermoleovorans ID-1, isolated from hot springs in Indonesia, showed extracellular lipase activity and high growth rates on lipid substrates at elevated temperatures. On olive oil (1.5%, ... -
Isolation and Identification of Ice-Nucleating-Active Bacteria from Indonesian Edible Leafy Plant Poh-Pohan (Pilea glaberina)
(2008)Two ice-nucleating-active (INA) bacteria (isolates C and 6) were isolated from poh-pohan (Pilea glaberina), an Indonesian edible leafy plant (lalaban). The maximum nucleation temperature of aqueous suspensions of the two ... -
Isolation, Identification and Tyrosinase Inhibitory Activities of the Extractives from Allamanda cathartica
(2011)Tyrosinase inhibitory activity of the extractives from A. cathartica was examined and their new bioactivity and potent active compounds were identified. Five compounds, glabridin, new lignan, kaempferol, naringenin, and ...