PENGARUH JARAK CELAH BLADE TANDEM DENGAN BLADE UTAMA TERHADAP KARAKTERISTIK AERODINAMIS TURBIN ANGIN SAVONIUS

With sufficient wind potential in Indonesia, it can be used for wind turbine applications. Therefore, the Savonius wind turbine needs to be further developed in order to get a Savonius wind turbine model that produces optimal power efficiency. The purpose of this research; (1) to determine the correct size of the tandem blade gap with the main blade, (2) to determine the effect of the tandem blade clearance with the main blade on the power and efficiency of the Savonius wind turbine model. The method used is an experimental method with the object of a Savonius type wind turbine (two blades) one level with variations in the distance of the tandem blade gap with the main blade. The method of data collection is assembling a wind turbine model with a blade gap distance that will be studied at each level of wind speed and loading. In this experiment the researchers used variations in the tandem blade gap distance with the main blade with variations in the distance of 105mm, 110mm, 115mm and 120mm. The results of the study prove that the effect of the most optimal blade gap is in the variation of 105mm with a power of 0.8937 Watt and an efficiency value of 9.745% at a wind speed of 5.5 m/s.  Keywords: Savonius wind turbine, Vertical, Tandem Blade, Gap distance between blades

Growth Performance of Transfection Tiger Shrimp Broodstock Penaeus Monodon in Different Generation

Diseases resistant genes assemblage for tiger shrimp has been initiated by The Research Institute for Coastal Aquaculture in collaboration with Bogor Agricultural Institute, through transgenesis approach under anti-virus genes transfection. The study aimed to evaluate the growth performance of broodstock candidates of tiger shrimp at different generati on (F0 and F1). This research was conducted at 2000 m2size of four ponds in Takalar Regency, South Sulawesi.. The treatment was different generations of broodstocks, which were: broodstocks originated from F0generation, (A) and F1 (B). The 22.63 to 28.57 g of broodstock candidates were stocked 0.5 ind.m-2 and then reared for 128 days. During rearing period, these shrimp were fed usingcommercial pelleted feed with content 36-38% of protein in dosage of 10-4%/ body weight. Feeding frequency was applied in the morning and in the evening. Measured variables were growth, size distribution, survival rate and water quality The results indicated that the performances of these shrimps, growth, size distributions as well as survival rates between these F0 and F1 were not significantly different (p>0.05). The growth pattern was relatively equal between treatment during rearing period. Survival rate of tiger shrimp in this study ranged from 51.7 to 73.35%. This study have implications on the provision of superior broodstock shrimp in ponds in order to support the sustainability of shrimp seed production in hatchery

Rancang Bangun Sistem Otomatisasi Pengawasan Jembatan Timbang dengan Mikrokontroler AT89S51

Penelitian ini bertujuan untuk membuat model sistem pengawasan jembatan timbang, dengan memanfaatkan database sebagai penyimpan data, aplikasi client server sebagai antarmuka, dan palang pintu otomatis yang terintegrasi dengan timbangan berat. Sistem juga dilengkapi dengan perangkat tambahan berupa kamera pemantau yang dimanfaatkan untuk pengawasan langsung secara visual dan akan merekam gambar kendaraan yang melakukan penimbangan. Metode yang dipergunakan dalam penelitian ini adalah metode eksperimental yaitu dengan melakukan perancangan, pembuatan dan pengujian model sistem. Model sistem dibuat dalam bentuk software dan hardware. Software aplikasi client server dibuat dengan bahasa pemrograman delphi 7, database dibuat dalam MySqL. Hardware input data berat kendaraan didapat dengan memanfaatkan sensor berat (Loads Cell), Op-Amp, INA125 dan mikrokontroler AT89S51. Untuk simulasi palang pintu dipakai motor DC sebagai penggerak. Palang pintu akan membuka dan menutup secara otomatis. Hasil penelitian berupa pengujian fungsional sistem menunjukkan bahwa, model sistem yang dibuat dapat memenuhi kebutuhan fungsional penimbangan kendaraan

ENHANCING THE PERFORMANCE OF THE WALL-FOLLOWING ROBOT BASED ON FLC-GA

Determination of the improper speed of the wall-following robot will produce a wavy motion. This common problem can be solved by adding a Fuzzy Logic Controller (FLC) to the system. The usage of FLC is very influential on the performance of the wall-following robot. Accuracy in the determination of speed is largely based on the setting of the membership function that becomes the value of its input. So manual setting on membership function can still be enhanced by approaching the certain optimization method. This paper describes an optimization method based on Genetic Algorithm (GA). It is used to improving the ability of FLC to control the wall-following robot controlled by FLC. To provide clarity, the wall-following robot that controlled using an FLC with manual settings will be simulated and compared with the performance of wall-following robots controlled by a fuzzy logic controller optimized by a Genetic Algorithm (FLC-GA). According to comparative results, the proposed method has been showing effectiveness in terms of stability indicated by a small error

Improving a Wall-Following Robot Performance with a PID-Genetic Algorithm Controller

A wall-following robot needs a robust controller that navigate robot based on the specified distance from the wall. The usage of PID controller has been successfully minimizing the dynamic error of wall-following robot. However, a manual setting of three unknown parameters of PID-controller often precisely increase instability. Hence, recently there are many approaches to solve this issue. This paper presents an approach to obtaining those PID parameters automatically by utilizing the role of Genetic Algorithm. The proposed method was simulated using MATLAB and tested in a real robot. Based on several experiments results it has been showing the effectiveness of reducing the dynamic error of the wall-following robot

GROWTH PERFORMANCE OF TRANSFECTION TIGER SHRIMP BROODSTOCK Penaeus monodon IN DIFFERENT GENERATION

<p><em>Diseases resistant genes assemblage for </em><em>tiger shrimp has been initiated by </em><em>The Research Institute for Coastal Aquaculture </em><em>i</em><em>n co</em><em>llabo</em><em>ration with Bogor Agricultural Institute</em><em>, </em><em>through</em><em> </em><em>transgenesis</em><em> approach under </em><em>anti-virus gene</em><em>s</em><em> transfection. The  study aim</em><em>ed</em><em> to evaluate the growth </em><em>performance of broodstock candidates of tiger shrimp </em><em>at different generati on (F₀ and F₁). This research was  conducted at </em><em>2000 m²size </em><em>of four po</em><em>nds</em><em> in Takalar Regency, South Sulawesi</em><em>.</em><em>^.</em><em>T</em><em>he treatment</em><em> was</em><em>  differen</em><em>t</em><em> generations </em><em>of </em><em>broodstocks, which were: broodstocks originated from F₀</em><em></em><em>generation</em><em>,</em><em> (A) and F₁ (B)</em><em>. The 22.63 to 28.57 g of broodstock candidates were stocked </em><em>0.5 ind</em><em>.</em><em>m</em><em>^-</em><em>²</em><em> and then reared for 128</em><em> days. During rearing period</em><em>, these</em><em> shrimp </em><em>were </em><em>fed</em><em> usingcommercial </em><em>pelle</em><em>ted feed</em><em> with content 36-38% of protein in dosage of 10-4%/  </em><em>body weight. Feeding frequency was </em><em>applied </em><em>in the morning and in the evening.</em><em> </em><em>Measured variables were </em><em>growth, size distribution, survival rate  and w</em><em>ater </em><em>quality </em><em>T</em><em>he results indicated that the performances of these shrimps, growth, size distributions as well as survival rates between these F₀ and F₁ were not significantly different (p&gt;0.05).</em><em> </em><em>The growth pattern was relatively equal between treatment  during rearing period. Survival rate of tiger  shrimp in this study ranged from 51.7 to 73.35%. This study have implications on the provision of superior broodstock shrimp in ponds in order to support the sustainability of shrimp seed production in hatchery.</em><em></em></p><p><strong> </strong></p><strong><em>Keywords: </em></strong><em>broodstock, production, transgenic,  tiger shrimp</em

Applying Organic Fertilizer from Solid Waste of Super Intensive Shrimp Pond on Production of Milkfish Fingerlings Chanos chanos (Forsskal, 1775)

The cultivation of super-intensive shrimp with high density has consequences on the burden in the form of waste as the aquaculture activities product affecting the habitat feasibility for the aquatic organisms and the environment of fisheries. Super intensive shrimp in the form of solid waste has the potency to use as the raw material of organic fertilizer. Hence, this research is subject to assess the growth response of live feed and milkfish nursery, which are given super intensive pond solid waste through organic fertilizer compared to commercial organic fertilizers. The research used a completely randomized design (CRD) by three times of treatment and repetitions, respectively. The treatment applied in the experimental group was Urea plus SP-36 plus organic fertilizer originated as of best quality concentrated pond solid waste (A), Urea plus SP-36 plus commercial fertilizer (B), Urea plus SP-36 plus chicken farm waste organic fertilizer (C), and the controls group was Urea plus SP-36) (D). The Urea fertilizer dosage was 200 kg/ha, SP-36 as much as 100 kg/ha, and organic fertilizer each as much as 2,000 kg/ha. The parameters observed were components and a large quantity of plankton, the growth and survival rate of the juvenile milkfish, and the quality of water. The results of this research showed that the number of plankton species obtained during nursery of milkfish was 43 genera consisting of 27 genera of phytoplankton and 16 genera of zooplankton. The most dominant plankton found was from the classes Bacillariophyceae as much as 41.86%. The abundance of plankton obtained ranges of 1.330-1.915 ind/L. The super-intensive shrimp pond solid waste was applied as organic fertilizer along with inorganic fertilizer produced abandon plankton along with growth and survival juvenile milkfish produced by the application of commercial organic fertilizer was better than the components in the control group. This research also found that water quality measurement results during the experiment were suitable for the growth of live feed and milkfish

AN FLC-PSO ALGORITHM-CONTROLLED MOBILE ROBOT

The ineffectiveness of the wall-following robot (WFR) performance indicated by its surging movement has been a concerning issue. The use of a Fuzzy Logic Controller (FLC) has been considered to be an option to mitigate this problem. However, the determination of the membership function of the input value precisely adds to this problem. For this reason, a particular manner is recommended to improve the performance of FLC. This paper describes an optimization method, Particle Swarm Optimization (PSO), used to automatically determinate and arrange the FLC’s input membership function. The proposed method is simulated and validated by using MATLAB. The results are compared in terms of accumulative error. According to all the comparative results, the stability and effectiveness of the proposed method have been significantly satisfied

GROWTH PERFORMANCE OF TRANSFECTION TIGER SHRIMP BROODSTOCK Penaeus monodon IN DIFFERENT GENERATION

Diseases resistant genes assemblage for tiger shrimp has been initiated by The Research Institute for Coastal Aquaculture in collaboration with Bogor Agricultural Institute, through transgenesis approach under anti-virus genes transfection. The  study aimed to evaluate the growth performance of broodstock candidates of tiger shrimp at different generati on (F0 and F1). This research was  conducted at 2000 m2size of four ponds in Takalar Regency, South Sulawesi..  The treatment was  different generations of broodstocks, which were: broodstocks originated from F0generation, (A) and F1 (B). The 22.63 to 28.57 g of broodstock candidates were stocked 0.5 ind.m-2 and then reared for 128 days. During rearing period, these shrimp were fed usingcommercial pelleted feed with content 36-38% of protein in dosage of 10-4%/  body weight. Feeding frequency was applied in the morning and in the evening. Measured variables were growth, size distribution, survival rate  and water quality The results indicated that the performances of these shrimps, growth, size distributions as well as survival rates between these F0 and F1 were not significantly different (p&gt;0.05). The growth pattern was relatively equal between treatment  during rearing period. Survival rate of tiger  shrimp in this study ranged from 51.7 to 73.35%. This study have implications on the provision of superior broodstock shrimp in ponds in order to support the sustainability of shrimp seed production in hatchery. Keywords: broodstock, production, transgenic,  tiger shrim

Application of organic fertilizer originated from pond waste for white shrimp (Litopenaeus vannamei) grow-out in the extensive system

This study aims to evaluate the growth of natural feed, growth, survival rate, and production of white shrimp culture in an extensive system. A total of 9 ponds of 500 m2 were used as research containers. This study used a CRD with 3 treatments each with 3 replications. The treatments tried were: A = pond solid waste as organic fertilizer (2000 kg/ha) + Urea (100 kg/ha) + SP 36 (100 kg/ha), B = KCP PLUS + Urea (100 kg/ha) + SP 36 (100 kg/ha) and C= KM+Urea (100 kg/ha) + SP 36 (100 kg/ha). The test animals’ average weight of 0.027 g/ind, stocked at a density of 4 ind/m2. Supplementary fertilizer was given 10% of the initial dose and given every week. The results showed that the application of pond solid waste organic fertilizer gave a relatively similar response to the use of other commercial fertilizers on the growth of white shrimp. The survival and shrimp production significantly differed from other treatments. The abundance of individual phytoplankton ranging from 565-2588 ind/L and zooplankton ranges from 523-652 ind/L. The plankton diversity index (H’) ranges from 1.47-2.12, the uniformity index (E) ranges from 0.52-0.83, and the dominance index (D) ranges from 0.16-0.38