Garuda - Garba Rujukan Digital

All

Widyariset

widyariset
Website

Published by Pusbindiklat Peneliti LIPI

ISSN : - EISSN : 24610976 DOI : 10.14203

Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics

Widyariset is a scientific journal which publishes the results of research and development, assessment, and systematic thinking about Natural Science.

Arjuna Subject : Umum - Umum

Articles 25 Documents

1 2 3

Search results for , issue "Vol 14, No 3 (2011): Widyariset" : 25 Documents clear

FORMULA OPTIMIZATION OF PLANTAGO (PLANTAGO MAJOR L.) HERB EXTRACT CHEWABLE TABLETS AT VARIOUS MANITOL- LACTOSE RATIO USING SIMPLEX LATTICE DESIGN Septi Nur Hayati TN.; TN. Saifullah S.; Sri Mulyani
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

The use of plantago (Plantago major L.) traditionally is less practical, therefore it needs to be developed into chewable tablet dosage form which is more acceptable. To prepare chewable tablet, lactose as a fi ller was used to substitute a part of mannitol which is relatively more expensive. Simplex lattice design (SLD) method was used to obtain the optimum ratio of mannitol-lactose mixture. Formula optimization using SLD was determined by testing of the granules physical properties: fl ow properties, compactibilities, and absorption capacities of water at various ratio. Plantago herbs were extracted by decoction and characterized. Granules of optimum formula were compressed into tablets and followed by testing its qualities: weight uniformities, hardness, brittleness, and qualitative analysis of chemical compounds using thin layer chromatography. Physical properties data of granules and chewable tablets were analysed using theoretical method and statistical with T test. The results showed that the increase of lactose proportion increased the fl ow properties, compactibilities, and absorption capacities of water. T-test at 95% confi dence level (α=0.05) indicated that SLD equalization was valid. Optimum area located between lactose-mannitol 100% : 0% and 20% : 80% with optimum formula was lactose-mannitol 100% : 0% as an optimum formula.

MORPHOLOGICAL DESCRIPTION OF MEDINILLA SPP. IN BALI BOTANIC GARDEN IN ORDER TO DEVELOP AS ORNAMENTAL PLANT I Nyoman Peneng; Wayan Sujarwo
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

The morphological description of 13 species of Medinilla spp. (Melastomataceae) in Bali Botanic Garden has been conducted based on morphological characters, so that it could be evidence to be justifi ed as ornamental plant. The study was conducted on plant collections of Bali Botanic Garden and the species of Medinilla which is growing wild inside the garden. Morphological data and agronomic potential of each species were showed in order to support its development as ornamental plant. Based on the results of observation of morphological characterization,several species of Medinilla was suitable to be developed as ornamental plant in pots or planted directly in the fi eld. Further explanation of each Medinilla as ornamental plant will be discussed in this paper.

INFLUENCES OF METEOROLOGICAL PARAMETERS AND OZONE PRECURSORS TO NEURAL NETWORK MODEL IN OZONE TROPOSPHERIC CONCENTRATION (STUDY IN BANDUNG CITY) Dyah Lukita Sari; R. Driejana
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

As an air pollutant, the fate of ozone is determined by the movement and chemistry of atmospheric dynamics and the precursors of ozone are emitted from the source. In that case the effect of each of meteorological param- eters and ozone precursors need to be known so that the ozone concentration can be predicted. In this research the concentration of ozone precursors (NO and NO2), temperature, solar global radiation, humidity, and wind speed as meteorology parameters were used as input in artifi cial neural network program to obtain model which can predict concentration of tropospheric ozone in Bandung city. The relation between ozone precursors concentration and meteorological parameters to ozone concentration was indicated by the correlation value. Positive correlation values, the increase in ozone concentration, was infl uenced by variables of temperature and solar radiation. A negative correlation value, the decline in ozone concentration, is affected by humidity variables. Modelling results indicate that the use of temperature and concentrations NO2 as data input appeared to be a dominant contributors rather than the other input parameters.

ISOLATION, SELECTION AND MOLECULAR IDENTIFICATION OF ANTIBIOTIC PRODUCING ACTINOMYCETES Tri Ratna Sulistiyani; Nunuk Widhyastuti
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Microorganisms is one of the biodiversity that is priceless. One type of microorganisms is actinomycetes. Actinomycetes is a potential source of bioactive compounds producing high comercial value in pharmaceuticals and agricultures. The results showed that 44 Actinomycetes isolates has the ability to produce secondary metabo-lites antibiotics. They were active against M. luteus, S. aureus, E. coli, B. subtilis, S. cerevisiae, and C. albicans. Morphological studied indicated that the A16.1 isolate belonged to the genus Streptomyces. The identifi cation result based on 16S rDNA sequence is S. hygroscopicus subsp. azalomyceticus with 97% similarity level.

PREPARATION OF NI-MO CATALYSTS USING THE PILLARED CLAY AS A SUPPORT FOR HYDRODESULFURIZATION OF COKER NAPHTHA Nino Rinaldi
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

On the preparation of the Ni-Mo catalysts, a high of surface area of the support was needed in order to achieve the well dispersion of Mo on the support. One of the promising ways is the use of pillared clays as the support. Therefore, the preparation of pillared clay for a support of Ni-Mo catalyst and its effect on the hydrodesulfurization (HDS) reaction for sulfur removal of Coker naphtha were studied. The effects of pH of the Mo impregnation solutions were also studied. The results show that the pillarization process on clay using Al-pillared is signiﬁ cantly increased the surface area. Moreover, with the pH of the impregnation solution of 10, Mo is higher dispersed on the pillared clay support compared to pH-1, and thus the HDS activity of NiMo pillared clay catalyst of pH-10 is also more active. However, the HDS activity of the present catalysts is still not good enough compared to the commercial NiMo catalyst.

INDONESIAN GINGER YIELD QUALITY AS THE BASIS FOR SALEABILITY OF GINGER OIL ON THE INTERNATIONAL MARKET Wahyu Susihono
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Ginger Rhizome is potential to be sold in form of ginger oil. The distillation process was needed to fi nd out the most profi table ginger to be sold in form of ginger oil. The research objectives are to fi nd out comparison of “rendemen” from rind and fl esh of gajah, emprit, and red ginger using water and steam distillation process with capacity: 5000 gram of raw materials. Characteristic test performed to fi nd out the feasibility of sales accordance with Essential Oil Association Standard. Result showed that the highest rendemen is red ginger rind: 1,102%, while the lowest is gajah ginger fl esh: 0,248%. Gajah ginger oil is not feasible to be sold in world market because of it soaping number that reached 25.52%.

THE IMPACT OF TIMBER HARVESTING AND TPTJ (SELECTED LOGGING AND ROW PLANTING) SILVICULTURE SYSTEM ON SOIL CARBON CONTENT POTENCY IN TROPICAL FORESTS (CASE STUDY IN IUPHHK AREAS OF PT SARI BUMI KUSUMA CENTRAL KALIMANTAN) Almulqu A.A, Elias; Prijanto Pamoengkas
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Timber harvesting and TPTJ silvicultural treatment had signifi cant impact on carbon stocks in tropical natural forests. The objectives of this research were studying the impact of timber harvesting and TPTJ silvicul-tural system on carbon stock potency in the soil of tropical natural forests, and examining the characteristics of soil physical, chemical and biological properties in tropical natural forest and TPTJ logged over areas. This research was conducted in the IUPHHK of PT Sari Bumi Kusuma, Unit of Seruyan, Central Kalimantan province. Carbon stocks potency in the soil were measured in litter biomass, root biomass, and soil organic carbon, by using Brown equation (1997), where it was assumed that 50% of the biomass was carbon. Research results showed that wood harvesting and TPTJ treatment possessed signifi cant respond. Carbon stocks in TPTJ areas ranged between 93.3583–135.9631 tons of Carbon/ha, whereas carbon stock in primery forest was 122.7342 tons of Carbon/ha

QOMARIAH MONTHS EARLIER DEFINITION IN INDONESIA UNDER THE SUPERVISION OF DATA HILAL BMKG Rukmana Nugraha
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Hilal observations was conducted from October 2008 to April 2010 using a telescope and electronic detec-tor. The data obtained were analyzed based on the measurement and the calculation of delta azimuth, arc of vision, arc of light, age and lag time stated at best time for observed Hilal or at sunset/sunrise for unobserved Hilal. For delta azimuth 0o, Hilal can be observed if arc of vision was greater than 8,95o, arc of light was greater than 8,33o, age more than 12,08 hour after/before conjunction and lag was longer than 28,97 minutes. Based on these criteria, Ramadhan, Shawal, and Dhulhijjah 1431 H will begin on 12 August 2010, 10September 2010, and 8November 2010, respectively.

STUDY OF ADAPTATION SIMULATION ON TERMAL COMFORT- ABLENESS LEVEL CAUSED BY GLOBAL CLIMATE CHANGE ON PADANG Sugeng Nugroho
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

Climate change will affect the thermal comfortableness level in the urban area therefore adaptation is needed to reduce its impact. Thermal comfortableness level was determined base on climate scenario data emission A2 and B2 on the period of 1961-2100. Adaptation simulation is conducted by modifying mean radiant temperature, increasing wind speed and cloth coeffi cient value on the thermal comfortableness level calculation. Result showed that generally, thermal comfortableness level in Padang on the period of 1961-2100 was in the uncomfort level category. Adaptation simulation which had the most infl uence on the thermal comfortableness level was by modify-ing mean radiant temperature and increasing wind speed on the original data.

THE ASSESSMENT OF THREE PROCESS AREAS IN MATURITY LEVEL 2 CMMI-DEV 1.2 FRAMEWORK ON SMALL INDEPENDENT SOFTWARE VENDOR IN INDONESIA (CASE STUDY: INOVASIA) Kautsarina Kautsarina
Widyariset Vol 14, No 3 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This research was conducted to get a snapshot of the utilization of the Capability Maturity Model Integration (CMMI) framework in a small ISV, with Inovasia as a case study, by assessing three process areas of level 2 as a ﬁ rst step in achieving software development activities in a timely, meets the needs of users, and within the budget provided. Software process improvement implemented in CMMI for Development model version 1.2 by using Management Information System Interim Maturity Evaluation (MISIME) as a tool to diagnose the maturity level of an ISV. This study generated value of current maturity level of ISV and software process improvement recom-mendations that can be done by the ISV.

Page 1 of 3 | Total Record : 25

1 2 3

Filter by Year

2011 2011

Filter By Issues

All Issue Vol 8, No 1 (2022): Widyariset Vol 6, No 2 (2020): Widyariset Vol 6, No 1 (2020): Widyariset Vol 5, No 2 (2019): Widyariset Vol 5, No 1 (2019): Widyariset Vol 4, No 2 (2018): Widyariset Vol 4, No 1 (2018): Widyariset Vol 3, No 2 (2017): Widyariset Vol 3, No 1 (2017): Widyariset Vol 2, No 2 (2016): Widyariset Vol 2, No 1 (2016): Widyariset Vol 18, No 2 (2015): Widyariset Vol 18, No 1 (2015): Widyariset Vol 1, No 1 (2015): Widyariset Vol 17, No 3 (2014): Widyariset Vol 17, No 2 (2014): Widyariset Vol 17, No 1 (2014): Widyariset Vol 16, No 3 (2013): Widyariset Vol 16, No 2 (2013): Widyariset Vol 16, No 1 (2013): Widyariset Vol 15, No 3 (2012): Widyariset Vol 15, No 2 (2012): Widyariset Vol 15, No 1 (2012): Widyariset Vol 14, No 3 (2011): Widyariset Vol 14, No 2 (2011): Widyariset Vol 14, No 1 (2011): Widyariset Vol 13, No 3 (2010): Widyariset Vol 13, No 2 (2010): Widyariset Vol 13, No 1 (2010): Widyariset Vol 12, No 3 (2009): Widyariset Vol 12, No 1 (2009): Widyariset More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

Phone
-

Journal Mail Official
widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location
Kab. bogor,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Andri Rahman

Contact Email andri.agus.rahman@lipi.go.id

Phone -

Journal Mail Official widyariset@mail.lipi.go.id

Editorial Address Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location Kab. bogor, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Andri Rahman

Contact Email
andri.agus.rahman@lipi.go.id

Phone
-

Journal Mail Official
widyariset@mail.lipi.go.id

Editorial Address
Pusbindiklat LIPI, Jl. Raya Bogor Km. 46, Cibinong Science Center, Cibinong - Bogor 16911

Location
Kab. bogor,

Jawa barat

INDONESIA