Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 266-285 of 471
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Nanostructure in bone apatite
(2010)The mineral component of bone is a form of calcium phosphate known as hydroxyapatite. Due to the presence of significant amount of foreign ions, biological apatites have a poor crystallinity and are non-stochiometric. Size ... -
New Class Of Bright Spatial Solitons Obtained By Hirota's Method From Generalized Coupled Mode Equations Of Nonlinear Optical Bragg Grating Author(S):
(2008)We have demonstrated by Hirota's bilinear method the existence of a new class of bright spatial soliton solutions from the same model of nonlinear optical Bragg grating considered previously by another group of researchers. ... -
Newly Described Species Of Endiandra (Lauraceae) From New Guinea
(2012)Newly described species of Endiandra (Lauraceae) from New Guinea. Reinwardtia 13(4): 341- 346. - Two new species of Endiandra (Lauraceae), i. e. Endiandra areolata Arifiani and Endiandra lanata Arifiani are described from ... -
Nitrogen, energy and vitamin nutrition of Rhizobium japonicum
(1968)The energy, nitrogen and vitamin nutrition of 36 strains of Rhizobium japonicum were investigated. Most of the strains utilized gluconate, glycerol, arabinose, glucose, mannose, mannitol, sorbitol, galactose and maltose. ... -
Novel Bacillus thuringiensis serovar aizawai strains from nulberry leaves in Indonesia
(1998)Bacillus thuringiensis isolates have been recovered from numerous sources, including soil, grain dust, plant leaves, diseased insect larvae from insectaries, and sericulture environments. During a study of B. thuringiensis ... -
Numerical Fit to the Ashkin Experiment for the 4-Different Formulas of Volume Momentum Proposed by Abraham, Minkowski, Peierls, and Klima-Petrzilka
(2002)The momentum flux density of electromagnetic radiation in dielectric media (Abraham-Minkowski problem) has not yet been solved while this question seems to be settled for collisionless fully ionized plasma. Therefore, the ... -
On comparisson between ordinary linear regression and geographically weighted regression: with application to indonesian poverty data
(2011)Ordinary linear regression (OLR) is one of popular techniques in analyzing relationship between response variable and its predictors. It is an analysis that produces global models applied to all observations assuming no ... -
On The Symmetrical Property Of Procrustes Measure Of Distance
(2015)~Icasurement the degree of differe11c:e bctwl'C'n two matric:<>s by using Procrustes analysis is preceded by a series of Euclidean si 111ilarit.v transformations namely translation, rotation. and dilation, performed i11 ... -
Operational parameters for packed beds in solid-state cultivation
(2010)Packed bed cultivation systems have potential for widespread application in solid-state cultivation (SSC), but they are poorly characterized. The effects of particle size and substrate loading on the growth of Rhizopus ... -
Optimasi Penentuan Lokasi Stasiun Pemantau Kualitas Udara Ambien Di Kota Surabaya
(2006)The ambient air quality monitoring system in Surabaya has fiue fixed monitoring stat ionS. Monitoring proVIdes Important information for public, but is expensive top purchase utilize, and maintain . Based on result from ... -
Optimization and comparative study of different extraction methods of biologically active components of Indonesian propolis Trigona spp.
(2012)Application of propolis as a medicinal agent is not usually in the form raw material, but it must be purified by extraction with solvents. This extraction process should remove the inert material and preserve the polyphenolic ... -
Optimization And Validation Of High Performance Liquid Chromatographic Fingerprint Of Phyllanthus niruri
(2014)Split-plot mixture-mixture design has been applied for optimization of Phyllanthus niruri chromatographic fingerprint. The design was applied for unreplicated and simultaneous optimization of extraction and chromatographic ... -
Optimization Of Extraction Conditions For Andrographolide Using Fractional Factorial Design
(2014)Andrographolide is a major bioctive compound found in king of bitter (Andrographis paniculata). In this study, the extraction method and its condition were investigated in order to get an extract with maximum amount of ... -
Optimization of Support Vector Regression using Genetic Algorithm and Particle Swarm Optimization for Rainfall Prediction in Dry Season
(2014)Support Vector Regression (SVR) Is Support Vector Machine (SVM) is used for regression case Regression method is one of prediction season method has been commonly used. SVR process requires kernel functions to transform ... -
Optimizing Tannin Extraction for Antibacterial Activity of Acacia nilotica
(2010)Sudanese have used seeds of Acacia nilotica subsp nilotica (family Fabaceae) as folk medicine for various diseases especially against bacteria. The objectives of this work were to optimise antibacterial compounds extraction ... -
Palm oil-based methyl ester sulphonate as an oil well stimulation agent
(2008)Methyl ester sulphonate (MES) is a surfactan (surface-active agent) that can reduce interfacial tension between water and oil. The compound can be diluted not only in water but also in oil.