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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 471 Documents

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AC POWER CALIBRATION ON POWER QUALITY ANALYZER USING A MULTIPRODUCT CALIBRATOR Amalia, Hayati; Faisal, Agah
Widyariset Vol 3, No 1 (2017): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

AC power calibration on power quality analyzer by using indirect method has been developed in Research Center for Metrology, Indonesian Institute of Science (LIPI). The measurement was performed by applying input voltage and input current from a standard multiproduct calibrator. Before being transferred to a power quality analyzer, the input current is passed first to the current coil to adapt the measuring range of the coil clamp of the power quality analyzer. Data collection and evaluation to determine the correction and uncertainty were carried out separately and alternately per phase. The analysis to evaluate the measurement correction and uncertainty was developed by considering the parameters that form the AC power, such as voltage, current, and phase angle. Based on the result of the calibration data analysis, it was obtained 5% of correction by the greatest measurement uncertainty of 1.92% at confidence level of 95% and coverage factor k=2.

COMMUNITY OF PHYTOPLANKTON AT KARIMUNJAWA NATIONAL PARK, JEPARA, CENTRAL JAVA Rahman, Arip; Mujiyanto, Mujiyanto
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Karimunjawa National Park is one of nature conservation area in Jepara Regency. The development of the tourism sector in the region will affect the condition of waters. The research aimed to determine community of phytoplankton in the waters Karimunjawa. The study was conducted in April, July, October, and November 2012 with field survey. Phytoplankton samples were taken using plankton net from four locations which purposively chosen. Water quality parameters were recorded including temperature, salinity, dissolved oxygen, and nutrient. The result indicated that there were 34 species of phytoplankton which grouped into two classes, Bacillariophyceae and Diniphyceae. Diversity index ranging 0.89 and 2.3, equitability index ranging 0.67 and 0.99 and dominance index ranging 0.09 and 0.46. Based on criteria of biological indices and analysis of water quality, the condition of the waters in National Parks Karimunjawa is stable moderate. During the research does not happen certain phytoplankton species dominance.

KELAYAKAN USAHA TANI PADI GOGO DENGAN POLA PENGELOLAAN TANAMAN TERPADU (PTT) DI KABUPATEN ACEH BESAR, PROVINSI ACEH Fitria, Eka; Ali, M. Nasir
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Aceh is one of the center of rice production areas in Indonesia. Nevertheless, especially there upland, rice productivity is still very low. The purpose of this study is to determine the feasibility of upland rice farming pattern through Integrated Crop Management (ICM). Location for the study in Tubaluy Village, Darul Imarah Sub-District, Aceh Besar, during May?August 2009, is determined purposively. The study is conducted over an upland area of 3.0 ha property of several farmer. The study involves 8 farmers as well. The results shows that adopting four varieties of rice with the application of ICM is worth the effort, amidst the four varieties potentially yield very well (6?7 tonnes/ha) and are more often planted by farmers for their moderate resistance to blast attack. Highest production capability is found in Towuti (6.29 tonnes/ha) with R/C ratio (2.88). With the application of a ICM, break even production (TIP) and breakeven price (TIH) analysis of four varieties tested (Cirata 62.32%, Limboto 61.40%, Situ Bagendit 62.32% and Tuwoti 65.35%) results that the production of those four varieties will not cause loss since any reducing in productivity or prices will not exceed the value of TIP or TIH. It means the four varieties remain profitable to be produced. The development of dryland rice farming can be carried out by improving farmers? access to resources, capital, technology, market and productivity through innovation and diversification of production. Furthermore, the development can be established by empowering farmers, develop- ing the institutions needed, and encouraging active participation of all stakeholders.

CHARACTERIZATION OF SOME MORPHOLOGY, ANATOMY AND PHYSIOLOGY OF THE WHEAT MUTANT (TRITICUM AESTIVUM L.) DEWATA AND SELAYAR IN TROPICAL LOWLAND. Sari, Laela; Purwito, Agus; Sopandie, Didy
Widyariset Vol 1, No 1 (2015): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Wheat mutant characterization is a part of the breeding programs to investigate the diversity that can influence in production increased. The aim of this research was to obtain data characterization morphology, anatomy and physiology that could be used as selection criteria and obtain an adaptive wheat mutant in the tropical lowland area. The research was conducted in Seameo-Biotrop Experimental Garden, located on ±250 m above the sea level, from April until November 2013. There were 18 Dewata wheat mutants and two Selayar wheat mutants, which is an M3 derivative resulted from EMS treatment, were used. LC50 Dewata got the 0.3% EMS treatment for 30 minutes, while LC50 Selayar got the 0.1% EMS treatment for 60 minutes. The data analysis used Augmented Designs Method. The results showed that the mutant Dewata that was significantly affected the morphology was indicated by four characters i.e. cooking time (two mutants), grain weight per genotype (seven mutants), leaf area (five mutants), and green leaves (one mutant). There are two characters in mutant Selayar that bring significant influence on morphological factors, those are seed weight per genotype (one mutant) and leaf area (one mutant), while the cooking time and green leaves have no real effect. Anatomical character appearance on leaf thickness and the size of stomata showed different levels of tolerance between Dewata plant mutant (DW-0,3.30-2-13-3), Selayar mutant (SL-0,1.60-2-14-2), and its both controls. As for the physiological character, there were significant differences in the amount of proline and glucose levels. Proline level in Dewata control was 79.29 µg/gBB, while in DW mutant -0,3.30-2-13-3 was 332.37 µg/gBB. Proline levels in Selayar control was 201.53 µg/gBB, while in mutant SL mutant-0,1.60-2-14-2 was 335.79µg/gBB. Likewise, glucose level in Dewata control was 14.32mg/gBB, while in DW mutant 0,3.30-1-15-1 was 29.06 mg/gBB, Selayar controls (5.87 mg /GBB) with SL mutant-0,1.60-2-14-2 (17.68 mg /gBB).

PRODUCTIVITY EVALUATION OF RICE PROMISING LINES IN ORANSBARI DISTRICT, MANOKWARI REGENCY Basundari, Fransiska Renita Anon; Rauf, Abdul Wahid
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Currently, the average of rice productivity in Manokwari only reached 4.3 ton ha-1. The rice varieties commonly planted in Manokwari are Ciherang, Mekongga, and Cigeulis, with the average productivity for each variety 3.87 ton ha-1, 4.01 t ha-1, and 4.11 t ha-1. The objective of the experiment was to obtain promising lines of rice which have high productivity (higher than 20%) of the current situation in Manokwari. The research was conducted in the District of Oransbari, Manokwari, West Papua in February until November 2010. It was arranged in Randomized Block Design, using four promising lines (RUTTST96B-15-1-2-2-2-1, BPT164C-68-7-3-2, RUTTSG-69-1B-1-1-3-2-1, IR71146-122-1-1-2) and four varieties of rice (Ciherang, IR64, Tukad Unda, and Memberamo) as a treatment, with three replications. The parameters observed include plant height, panicle number/clump, panicle length, yield, and the amount of filled grain. From the analysis, there were two promising lines namely BPT164C-68-7-3-2 and RUTTSG-96B-15-1-2-2-2-1. It showed the increasing of productivity about 36.27% and 52.09% from the current situation in Manokwari, and might be evaluated to be further developed in Oransbari District, Manokwari Regency.

GEOGRAFI DIALEK BAHASA MENTAWAI Novita, Rita
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

This research aims to portray the geography dialect in Mentawai Regency. The dialects in Mentawai Island are observed using dialectology approach. There were three dialects, namely: north Siberut dialect, South Siberut dialect, and Sipora-Sikakap dialect. Then, the sub-dialects found were Sipora sub-dialect and Sikakap sub-dialect. There are dialect and subdialect which are clearly seen in the map of dialect geography of Mentawai Regency.

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

RT-PCR TEST FOR DETECTION OF DENGUE VIRUS-3 IN INTRATHORACALLY INFECTED AEDES AEGYPTI Tunissea, Asyhar; Widiastuti, Dyah; Wijayanti, Nastiti
Widyariset Vol 15, No 2 (2012): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Dengue viruses, globally the most prevalent arboviruses, are transmitted to humans by persistently infected Aedes aegypty. Detection of Dengue viral RNA in mosquito thorax using Reverse Transcription Polymerase Chain Reaction (RT-PCR) assay is an alternatives method for Dengue vector surveillance. The study aimed to test RT-PCR technique to detection Dengue-3 in intrathoracally infected Ae. aegypti. The study design was experimental with descriptive analytic using mosquitoes of Dengue Virus-3 were used as infectious samples and non-infected adult Ae. aegypti mosquitoes were used as normal ones. The results shows the RT-PCR technique can detect Dengue-3 viral RNA in intrathoracally Ae. aegypti at 5th ,6th and 7th days incubation.

IDENTIFIKASI KARAKTER TOLERANSI CEKAMAN KEKERINGAN BERDASARKAN RESPONS PERTUMBUHAN DAN HASIL GENOTIPE JAGUNG Efendi, Roy; Azrai, Muhammad
Widyariset Vol 13, No 3 (2010): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

The objectives of this experiment were to study (a) response of maize genotypes drought stress during anthesis up to grain filling or maturity stages and (b) determine characters as drought tolerance indicators. Factorial randomize complete block design this experiment was used with two factors. The first factor was drought tolerance and sensitive genotypes and the second factor was periods of drought stress consisted of three condition: (i) drought at anthesis up to grain filling stages, (ii) drought at anthesis up to maturity stages, and (iii) optimum condition.The results of research showed that tolerance genotypes had the abilities to maintain shoot growth (plant height and shoot dry weight) and suppress leaf damage under drought condition. The abilities of drought tolerant were supported by heavy root dry weight while resulted the extend of root absorbing more water. The ability of maize genotypes in keeping shoot growth, suppressing transpiration due to lower leaf stomata density and higher water use efficiency is an important factors in suppressing yield loss in drought condition. The sensitive genotypes wasnot had these abilities since it had low root dry weight, therefore, the root extension was not supported for absorbing adequate amount of water for shoot growth (shoot dry weight and plant height) and increasing the intensityof damage leaf under drought condition was high. Besides, the sensitive genotype had higher leaf stomata density and lower level of water use efficiency which caused the increasing yield decrease (grain wieght/plant) compare to tolerance genotypes, more over, in longer drought period of theirs genotypes were not filled.

CORRELATION AND PATH ANALYSIS ON PHENOTYPIC CHARACTERS OF DOUBLED HAPLOID RICE LINES Safitri, Heni; Purwoko, Bambanng S.; Dewi, Iswari S.; Abdullah, Buang
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat Peneliti - LIPI

Grain yield improvement is the main objective in rice breeding programs. The objective of this study was to determine the phenotypic characters that have a direct or indirect effect on grain yield of double haploid lines. It expected can be used as selection criteria. The study was conducted on August 2009 at Cikeumeuh Bogor using randomized block design (RBD) with three replications. The materials used were 33 doubled haploid rice lines and three varieties/landraces rice. The results showed that number of productive tillers per hill, number of grains per panicle and 1,000 grain weight of rice can be used as selection criteria in improving grain yield. These three characters has a positive and very signi? cant correlation, positive and high direct effect on grain yield, and havea high heritability value.

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Andri Rahman

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andri.agus.rahman@lipi.go.id

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

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Jawa barat

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