cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bandung,
Jawa barat
INDONESIA
Jurnal Matematika & Sains
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Mathematics
Arjuna Subject : -
Articles 339 Documents
 12   13   14   15   16 
Photoaffinity Labeling Study for Identification of the Target Protein of Antimalarial Isoquercitrin Syamsurizal Syamsurizal; Satoru Tamura; Mohammad Mostaqul Huq; Masafumi Kaneko; Nobutoshi Murakami
Jurnal Matematika & Sains Vol 12, No 2 (2007)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Isoquercitrin (1), a flavonol monoglycoside showed a strong antimalarial activity. In order to identify the target protein in Plasmodium falciparum, a photoreactive isoquercitrin analog, 2-[2-[2-(biotinylaminoethoxy) ethoxy]-4-[3-(trifluoromethyl)-3H-diazirin-3-yl] benzoic acid isoquercitrinyl ester (2) has been synthesized which closely mimics the action of 1. Photoaffinity labeling of 2 revealed the apparent molecular mass of ca 70 kDa on the uninfected erythrocyte membrane.
Properties of Cohereditary Comodule Hanni Garminia; Pudji Astuti; Irawati Irawati
Jurnal Matematika & Sains Vol 12, No 2 (2007)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Let R be a commutative ring and C be an R-coalgebra which, as an R-module, is locally projective. This article describes some properties of a cohereditary C-comodule. The properties are derived by exploiting the closed connection between the C*-comodule category and the full subcategory of the C*-module category consisting of all C*-subgenerated C*-modules, where C* is the dual algebra of C.
Aplikasi Analisis Komponen Utama dalam Pemodelan Penduga Lengas Tanah dengan Data Satelit Multispektral Erna Sri Adiningsih; Mahmud Mahmud; Iskandar Effendi
Jurnal Matematika & Sains Vol 9, No 1 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Principle Component Analysis (PCA) application in modeling the soil moisture estimate using multispectral satellite data is meant to optimize spectral combination. PCA method has been applied to Landsat Thematic Mapper (TM) satellite data with good results. However, Landsat data have low temporal resolution (16 days) compared with daily NOAA-AVHRR (NOAA-Advanced Very High Resolution Radiometer) satellite data. So, NOAA-AVHRR data are able to provide better information on daily soil moisture. The objective of the study is to develop soil moisture estimation model based on daily 5-channel daily NOAA-AVHRR data using PCA method. The locations are West Java and Central Java as case study, while the period is August-September 1999. Some field soil samples were also taken from the two locations. The coefficient of variance shows that the three principle component (PC) can explain the variance of soil moisture of 0-20 cm depth better than of >20 cm depth. This is due to more dynamic surface soil moisture change rather than deeper soil layer. Among the three PCs, the first PC is the best parameter to estimate soil moisture. The index resulted by the first PC can estimate soil moisture better than vegetation index.
Efek Teratogenik Ekstrak Etanol Kulit Batang Pule (Alstonia scholaris R.Br) pada Tikus Wistar Endang Kumolosasi; Andreanus A. Soemardji; Komar Ruslan W.; Hasti Yuliani
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The teratogenic effect of ethanolic extract of “pule” (Alstonia scholaris R.Br., Apocynaceae) bark at repeated doses of 490 and 980 mg/kg body weight administered orally to pregnant Wistar rats for 19 days had been studied. Each dose caused miscarriage in 9.1% of the rats and mild hydrocephalus in 23.1% of the fetuses (dose 490 mg/kg body weight) and in 12.0% of the fetuses (dose 980 mg/kg body weight).
Phototransistor Based Position Sensitive Detector for Signal Detection in Photothermal Spectroscopy Kusminarto Kusminarto; Susilo Susilo
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In a photothermal spectroscopy the signal change is indicated by the displacement of the probe laser beam, therefore a position sensitive detector (PSD) is required to record this displacement that is proportional to the intensity of the signal.A phototransistor (BPY62D) based PSD has been designed and constructed. A Darlington circuit has been employed to increase the sensitivity of the PSD. Sensitivity of 100.6 mV/mm has been achieved which covered a linear area of 0,5 mm.
Isolasi dan Karakterisasi Mutan sup45 Saccharomyces cerevisiae Sensitif Temperatur Akhmaloka Akhmaloka; R. Hertadi; Senam Senam; P. E. Susilowati; M. Sindumarta; H. Sutedjo
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the approachs to understand the structure-function of the gene is by studying its mutants. A few of sup45 ts mutants was isolated from Saccharomyces cerevisiae strain BSC483/1a induced by EMS. The concentration EMS of 1.5% (v/v) was found to be the most effective concentration on this study. Eight of sup45 ts mutants were selected from 515 allosupressor mutants. All of the mutants showed lower growth rate and maximum growth compared to that of the wild type. In addition of allosuppression phenotype, six of the mutant showed temperature sensitive and the other two exhibited temperature and paromomycine sensitive. Quantitation of an allosuppression phenotype using plasmid-borned gene fusion, PGK-termination codon-LACZ, showed that the mutants have a variation level of allosuppression. Temperature sensitivity analysis of the mutants showed that one, three, and one mutants were unviable at 32, 34, and 37OC, respectively. Further analysis on two of the mutants showed that the allosuppression level increased by increasing temperature growth. All the data suggested that the mutants were allelic specific mutants.
Kajian tentang Efek Garam terhadap Kinetika Transfer Co(II) dalam Sistem Dwi-Fasa Air/Asam di-(2-etilheksil)fosfat Hendrawan Hendrawan; Yaya Sonjaya; Hernani Hernani
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The study of salt effect on kinetic of Co(II) transfer in aqueous/di-(2-ethylhexyl)phosphoric acid (D2EHPA) system has been performed using the technique of rotating membrane cell (RMC). Co(II) solutions in various conditions of aqueous phase were transferred into solution of di-(2-ethylhexyl)phosphoric acid in n-dodecane, as an organic phase, at various speeds of rotation. The result shows that the transfer of cobalt from aqueous into organic phase (D2EHPA) follows the transfer model of mass transfer with chemical reaction (MTWCR). The diffusion rate of complexed cobalt in the aqueous phase is the rate determining step. Higher ionic strenggt in bulk aqueous, lower affinity of aqueous solution to cobalt. The affinity of aqueous solution to cobalt becomes smaller as the ionic strength in the bulk aqueous increase.
Pengaruh Variasi Konsentrasi Asam Sulfat pada Proses Hidroksilasi Minyak Jarak (Castor Oil) Marlina Marlina; N. M. Surdia; Cythia Linaya Radiman; S. Achmad
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Castor oil is derived from the bean of castor plant Ricinus communis L., belonging to Euphorbiaceae family from Nangroe Aceh Darussalam. Oil rendement per gram of castor bean is 45 – 52% with high purity and better than the standard oil given by AOAC. Acetylation and methylation protective process occurs on hydroxyl group of castor oil, indicated by decreasing of hydroxyl number, and also changing the structure of oil. Hydration process is more efective on acetylation-protective oil than that on non-protective and methylation-protective oil. Optimum condition reached when acid (H2SO4) concentration was 5% for non protective, 20% for acetylation protective and 15% for methylation protective oil. At those conditions, iodine and hidroxy values for non-protective, acetylation-protective, and methylation protective oil were 56.0 and 730.3; 23.3 and 664.5; and 38.5 and 649.8 mg/g, respectively.
On the Behavior of the Solution of the Wave Equation Hendra Gunawan; Wono Setya Budhi
Jurnal Matematika & Sains Vol 9, No 2 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

We shall here study some properties of the Laplace operator through its imaginary powers, and apply the results to understand the behavior of the solution of the wave equation.
Populasi Planaria di lokasi Bukit Tunggul dan Maribaya, Bandung Utara Hertien Surtikanti
Jurnal Matematika & Sains Vol 9, No 3 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Planaria sp. is an organism inhabiting clean freshwater. The presence of Planaria sp. is diminishing at several locations. In order to understand the influence of environmental factors to the population of Planaria sp., field study on density and biomass of Planaria sp. has been carried out in two study locations Bukit Tunggul and Maribaya stream. These two streams have been known to be less impacted sites located of the Cikapundung River. Planaria sp. was sampled using plots 50 cm x 50 cm, to once a month in March, April and May 2002. These samples were brought to the laboratory of Ecology for density enumeration (density/m2) and biomass determination (gr/individual). Water quality parameters (dissolved oxygen, conductivity, pH, turbidity and temperature) at these two locations were measured in the field. Statistical analysis results showed that: (a) the density of Planaria sp. was significantly different (P

Page 14 of 34 | Total Record : 339

 12   13   14   15   16 

Filter by Year

1996 2017


Reset
Filter By Issues
All Issue Vol 22 No 1 (2017) Vol 21 No 1 (2016) Vol 20 No 1 (2015) Vol 19 No 3 (2014) Vol 19 No 2 (2014) Vol 19 No 1 (2014) Vol 18 No 3 (2013) Vol 18 No 2 (2013) Vol 18, No 1 (2013) Vol 17, No 3 (2012) Vol 17, No 2 (2012) Vol 17, No 1 (2012) Vol 16, No 3 (2011) Vol 16, No 2 (2011) Vol 16, No 1 (2011) Vol 15, No 3 (2010) Vol 15, No 2 (2010) Vol 15, No 1 (2010) Vol 14, No 4 (2009) Vol 14, No 3 (2009) Vol 14, No 2 (2009) Vol 14, No 1 (2009) Vol 13, No 4 (2008) Vol 13, No 3 (2008) Vol 13, No 2 (2008) Vol 13, No 1 (2008) Vol 12, No 4 (2007) Vol 12, No 3 (2007) Vol 12, No 2 (2007) Vol 12, No 1 (2007) Vol 11, No 4 (2006) Vol 11, No 3 (2006) Vol 11, No 2 (2006) Vol 11, No 1 (2006) Vol 10, No 4 (2005) Vol 10, No 3 (2005) Vol 10, No 2 (2005) Vol 10, No 1 (2005) Vol 9, No 4 (2004) Vol 9, No 3 (2004) Vol 9, No 2 (2004) Vol 9, No 1 (2004) Vol 8, No 4 (2003) Vol 8, No 3 (2003) Vol 8, No 2 (2003) Vol 8, No 1 (2003) Vol 7, No 2 (2002) Vol 7, No 1 (2002) Vol 6, No 2 (2001) Vol 6, No 1 (2001) Vol 5, No 2 (2000) Vol 5, No 1 (2000) Vol 4, No 2 (1999) Vol 4, No 1 (1999) Vol 3, No 2 (1998) Vol 3, No 1 (1998) Vol 2, No 2 (1997) Vol 2, No 1 (1997) Vol 1, No 2 (1996) Vol 1, No 1 (1996) More Issue