Jurnal Nature Indonesia Vol. 9. No. 2/April 2007
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The Minimum Agitation Speed in Mixer Settler Extractor |
Zuchra Helwani, Martunus |
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Keywords: liquid-liquid system, MSE, the minimum agitation speed
The minimum agitation speed as a parameter must be known to achieve complete mixing with minimum of
consume of energy. Goal of the research is to experimentally investigate the minimum agitation speed with some
affecting variables. Selengkapnya.....
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| Allelopathic Interference of Weeds in Soybean:
Effects on Respiration |
| Irawati Chaniago1), A. Taji2), P. Kristiansen2), R. Jessop2) |
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Keywords: allelopathy, soybean, respiration, germination
An experiment to study the effect of aqueous extracts of some weeds on the respiration rate of germinating
soybean has been carried out at the Soil Biology laboratory, the University of New England, Armidale, Australia.
Soybean, cultivar Melrose, seeds were germinated in a respirometer vessel in a water bath at 250C.. Selengkapnya.....
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Numerical Simulation of Crashing Pert Networks
by Quadratic Programming |
| Destiana Hadirin, Yosza Dasril, Ismail Bin Mohd |
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Keywords: crashing, Optimization, PERT, Project Management, Taylor Series
In this paper we proposed an extension
of the research which had done by Abbashi and Mukattash (2001) by using
second order Taylor’s expansion. The numerical result indicated that by
this approach we can increase the probability of completed project which
led to reduce the standard deviation and project duration from 421 to
412.4 days. Selengkapnya.....
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Validitas Skoring Kodominan
pada Fingerprinting Berbasis AFLP
untuk Pemeriksaan Homozigositas pada Tanaman Asparagus |
| Jamsari |
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| Keywords: AFLP, asparagus, codominant, homozygote, M gene.
The ability of a marker system to distinguish allele-combinations for certain locus position reflects its power. AFLP
as one of molecular marker system is known as a high throughput system, which is characterized by its multiloci
nature. In the most cases, allele composition could only be detected in dominant way. The presence of heterozygote
composition could not be differentiated with homozygote by dominant marker system. Selengkapnya... |
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Kandungan dan Aktivitas Antioksidan Karotenoid Provitamin A
Limbah Serabut Kelapa Sawit |
| Lia
Kusmita¹), Jimmy Hindarto¹), Leenawaty Limantara¹&sup,²) |
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| Keywords: carotenoid, vitamin A, antioxidant activity
Research was done on the fiber of palm oil waste to determine the type, the content and the antioxidant activity of
provitamin A carotenoid. Identification of provitamin A carotenoid was carried out by carotenoid chemical test. The
present of carotenoid was proved further by the use of thin layer chromathography (TLC), column chromatography
and UV-Vis spectroscopy Selengkapnya... |
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Permeabilitas Membran Hibrid Nilon 66
terhadap Air dan Metanol |
| Amilia Linggawati¹&sup,²), Abdul Wahab Mohammad¹), Zulkafli Gazali³) |
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| Keywords: Electron beam, flux, hibrid nylon 66, nanofiltration, permeability
Permeability is one of criteria to determine of membrane performance, because it has relationship with velocity
separating process by membrane. Objective of this research to identify flux or membranes permeabilities that
were synthesized by reacting nylon 66 with amino prophyl triethoksilane (APTES) and followed by electron beam
(EB) irradiation.. Selengkapnya... |
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