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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 476 Documents

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SINGLE MASTER – MULTIPLE SLAVES MICROCONTROLLER IMPLEMENTATION FOR SENDING AND RECEIVING DATA ON WEATHER STATION PROTOTYPE Dikdik Krisnandi; Purnomo Husnul Khotimah
Widyariset Vol 3, No 1 (2017): Widyariset
Publisher : Pusbindiklat - LIPI

We have carried out the microcontroller research implementation as a Master to control multiple Slaves microcontroller on weather station prototype. Master Microcontroller could be interconnected with four Slaves microcontrollers Slaves, in which each has a different type of input. In this research, we used an ATmega8535 microcontroller. To distinguish between a Slave microcontroller and another Slave microcontroller, an addressing system (ID) is used. Data communication used a standard serial port RS-232 and RS-485 ports, the connector is used to connect the two ports. The Single Board Controller (SBC) Master serves user commands from users, sending the commands and processing Slaves. User commands are given via the keypad and then transmitted using a Universal Asynchronous Receiver-Transmitter (USART) to SBC Slaves. The process on the SBC Slaves is waiting for orders from the Master. The order is detected using an interrupt. After that, the commands are processed and the respond is sent to the SBC Master via USART. When there is no command, Slaves do the idle process. The result shows that the microcontroller application single Master - multiple Slaves has functioned for sending and receiving data in accordance with the specified command. This is shown by the output on a display that has shown the result as expected. The power consumption of each SBC is relatively small which is 0,745 Watt. Thus, it makes the system more economically profitable.

COMMUNITY OF INTRODUCED FISH IN LAKE BATUR, BALI Agus Arifin Sentosa; Danu Wijaya
Widyariset Vol 16, No 3 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

Lake Batur is the largest lake in Bali Island, however information on introduced fish community is not available yet. The research aimed to identify the community structure and ecological status of the introduced fish in Lake Batur, Bali. The study was carried out on May, July, and October 2011 using survey method. The fishes were obtained using experimental gill nets and by fishermen. Data analysis included index of diversity, dominance, and the abc (abundance-biomass comparison) curve. The results showed the tilapia (Oreochromis niloticus) was the dominant species. The status of introduced fish community suggested to ecological stress, but it was relatively undisturbed.

KARAKTERISASI MUTAN KENTANG HITAM (Plectranthus rotundifolius (poir.) spreng.) HASIL IRADIASI SINAR GAMMA YANG TOLERAN SALINITAS DAN KEKERINGAN DENGAN MENGGUNAKAN MARKA RAPD DAN ISSR Diyah Martanti; Yuyu S. Poerba; Kusumadewi Sri Yulita; Herlina Herlina
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Hausa potato (Plectranthus rotundifolius (Poir.) Spreng.) is one of the alternative food for people living in some part of Indonesia. However, its low level of genetic variations has become an obstacle in developing new va- riety. Plant breeding through mutation, e.g. irradiation of γ rays, can be assumed to improve genetic diversity. The aim of this study was to characterize tuber hausa potato mutant irradiated γ rays in salinity and drought tolerant using ISSR and RAPD markers. Five primers of ISSR and five primers of RAPD were used to amplify DNA of hausa potato mutants. Ten primers generated 95% polymorphic and 27 speciific band of irradiated salt-tolerant mutans. Meanwhile, they generated 49% polymorphic and three specific band of irradiated drought-tolerant mutans. The result of the Principal Component Analysis showed that mutants were divided into three groups based on specific bands that play role in the group formation. The result showed that the ISSR and RAPD markers can be reliable to characterize mutants on hausa potatoes.

ACIDITY AND ALKALINITY LEVEL OF MAYAN BAMBOO ACTIVATED CHARCOAL (MBAC) ON SATURATED VAPOR OF ACID CHLORIDE AND NATRIUM HYDROXIDE Novitri Hastuti; Gustan Pari; Dadang Setiawan; Mahpudin Mahpudin; Daud Mulia Godang
Widyariset Vol 1, No 1 (2015): Widyariset
Publisher : Pusbindiklat - LIPI

The use of a strong acid and alkali gives some disadvantages such as large volume, needs washing process and expensive in cost. The use of activated charcoal as a solid catalyst has grown but its adsorption performance can be affected by the activation process. This study aimed to characterize Mayan bamboo activated charcoal/MBAC (Giganchlotoa robusta Kurz). Carbonization was carried out at temperature 500°C for 4-5 hours. The charcoal was activated by steam at temperature 800°C for 60 minutes and 90 minutes. Activated carbon from Mayan bamboo tested for its acidity and alkalinity by saturated vapor of HCl and NaOH in a desiccator for 5 days. Characterization of Mayan bamboo activated showed that the moisture content, ash content, volatile matter and fixed carbon met the Indonesian standards (SNI 06-3730-1995). For adsorption capacity of iodine only MBAC in activation time, 90 minutes met Indonesian standard. The crystallinity of MBAC in activation time 90 minutes is 47.58% higher than MBAC in activation time 60 minutes about 25.65%. Adsorption of saturated vapor of HCl and NaOH showed MBAC in activation time 60 minutes is more acidic whereas MBAC in activation time 90 minutes is more alkaline. MBAC is can be used as a solid catalyst for various applications.

CLINICAL STUDY OF JAMU FORMULA FOR GENU OSTEOARTHRITIS Danang Ardiyanto; Sunu Pamadyo T. Ismoyo
Widyariset Vol 16, No 2 (2013): Widyariset
Publisher : Pusbindiklat - LIPI

The uses of conventional drug for osteoarthritis treatment has been shown to give serious side effects. The use of jamu as a natural product for treatment of osteoarthritis needs a scientific evidence especially efficacy and safety evidence. This research is a quasi experiment pre post test design study that was conducted at Klinik Saintifikasi Jamu B2P2TOOT from March until December 2011. The giving of jamu formula that which consisted of 15 gram temulawak rhizome (Curcuma xanthorrhiza), 7 gram meniran herb (Phylanthus niruri), 15 gram kunyit rhizome (Curcuma domestica), 5 gram adas seed (Foeniculum vulgare), 5 gram rumput bolong herb (Equisetum debile), and 5 gram kumis kucing leaves (Orthosiphon stamineus) for2 months could improve clinical symptoms such as joint paint, swollen joints, movement disorders and tingling. Objectively the jamu formula decresed the joint paint with measurements of visual analogue scale. This formula in terms of safety did not interfere with liver and kidney function.

PERAN GENDER EGALITARIAN DAN INTENSI SUAMI MELAKUKAN KEKERASAN TERHADAP ISTRI DI KELURAHAN TLOGOSARI KULON, PEDURUNGAN, SEMARANG Sugeng Supriyono
Widyariset Vol 12, No 3 (2009): Widyariset
Publisher : Pusbindiklat - LIPI

The numbers of wife abuse increased because offamily crisis and the beginning ofmarital problem. The aim of this research was to analyze the correlation between egalitarian role gender with wife abuse. Samples (N=60) were married husbands for 1-11 years, with range of age 27-40 years old, with kids, no nannies and living at Tlogosari Kulon Pedurungan Semarang. This research was carried out by using purposive sampling. Data were collected throughout scale and statistical regresion analysis. The result showed a significant correlation between egalitarian role gender with wife abuse with R Square = 0,334 at significance of 0,00 (p<0,01). It meant that high lower of intense hardness to wife, that equaled to 33,4 %, was determined by egalitarian role gender.

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%.

MODELING OF OIL SPILL ON MONTARA WELL HEAD PLATFORM IN THE TIMOR SEA - Lukijanto; Andri Purwandani
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Modeling of oil spill on Montara well head platform in the Timor Sea, with short-term period from August 20,2009 until January 5, 2010 has been conducted. The purpose of this study was to examine the pattern of the spreadof oil spills (the distribution, the areas of oil exposure, concentration of the oil spill and the time of exposure)which was a possible entry into the Exclusive Economic Zone (EEZ) of Indonesia. The results indicated that an oilspill scenario of 400, 1,500 and 2,000 barrels per day were obtained the maximum value of the oil concentrationof 54.0 ppm, 202.4 ppm and 270 ppm, respectively. The total area of oil spill exposure in EEZ of Indonesia wasabout 41,360 km2 with an average maximum area exposed for 2 hours and a maximum of 3:29 hours. Comparisonbetween the results of oil spill modeling with image analysis of Modis Aqua and Terra (SkyTruth) were obtainedthat the extent of distribution and movement patterns differ from one to another. Furthermore, the verification andvalidation of the modeling results with the field data are still required.

PERBANDINGAN LUARAN MODEL GLOBAL ATMOSFER CCAM dan GFS di wilayah INDONESIA DAN SEKITARNYA Donaldi Sukma Permana
Widyariset Vol 13, No 3 (2010): Widyariset
Publisher : Pusbindiklat - LIPI

The aim of this research was to compare Conformal Cubic Atmospheric Model (CCAM) and Global Forecast System (GFS) prediction against GFS initial condition as control up to 7 days in the future over Indonesia and northern subtropical regions of Indonesia in September – October – November (SON) 2008. Comparison was conducted in spatially to observe the similarity pattern by calculating spatial correlation value for some basic parameters in several pressure vertical levels. The result described that output of both models showed general similarity pattern in SON 2008 over Indonesia and northern subtropical regions of Indonesia, obtained spatial correlation values indicated GFS prediction was slightly better compared by CCAM prediction. For some parameters, CCAM output showed a particular problem in low-pressure vertical level (250mb). There was probably a problem with the vertical interpolation of the GFS initial data onto the CCAM conformal-cubic grid.

EFFECT OF MIXING THE CALF FECES WITH COASTAL SANDYSOIL ON THE GROWTH OF CORN PLANT (Zea mays) Agung Prabowo; Soemitro Padmowijoto; Zaenal Bachruddin; Abdul Syukur
Widyariset Vol 14, No 2 (2011): Widyariset
Publisher : Pusbindiklat - LIPI

This research was intended to determine the effect of combination calf feces and coastal sandy-land on the growth of corn plant. This experiment was arranged in a 2x3x2 factorial pattern of completely randomized design. First factor was calf feces of with and without microbe treatment, second factor was three levels of feces incubation which were 0 day (I-0), 20 days (I-20), and 40 days (I-40), and third factor was fecal dosages of 15 ton/ha (D15) and 30 ton/ha (D30). Parameters of plant height, dry, and wet weight of roots and vegetative, chemical and physical properties of mixture of calf feces and coastal sandy-land were observed. The plant height was observed weekly. There was a signiﬁ cant difference (P<0.05) on combination of feces without and with microbe treatment,fecal incubation time and dosage on the plant height. There was a tendency of increasing fecal dosage and fecal incubation time on the increase of plant height. This study suggests that calf feces could improve the corn plant growth in coastal sandy-land.

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Andri Rahman

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andri.agus.rahman@lipi.go.id

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widyariset@mail.lipi.go.id

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

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Kab. bogor,

Jawa barat

INDONESIA