Judul: Simulasi Pertumbuhan Ayam Broiler Berdasarkan Variabilitas Iklim Mikro Kandang
Abstrak: Modelling is a relevant tool to monitor broiler rearing condition in integrated view. The aim of this study is to develop the simulation model of broiler growth realated to its interaction with micro-climate condition. Broiler growth model was simulated in relation with energy balance from feed that was intaked till its excreted. This simulation model can predict broiler live weight and feed intake variables. This model was validated using ideal and non ideal micro-climate condition as model inputs. Validation result show MRPE < 25%, means that this model accurate enough tobe used in another broiler growth simulation. This paper gives two simulation sample, it is simulation to see the effect of heat stress, and cold stress on broiler performance; and simulation to determine the best harvesting time. Based on feed convertion ratio (FCR) curve from first simulation, broiler that kept under effective temperature 34 oC (heat stress) has better feed efficiency than broiler that kept under Tef 10 oC (cold stress
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Judul: Sistem supervisory control enviromental on model broiler closed house
Abstrak: Indonesia was a tropical country with high ambient temperatures for broilers since daily temperature reaches an average daily temperature of 360C (maximum) and 320 C (minimum); whereas the optimal temperature for broilers was in the range of 28-300C. Therefore, midle or large scale broiler industries have been using a control system to maintain the optimal temperature within a broiler house. Therefore, the role of a control system for regulating environmental parameters, not only temperature but also humidity, light intensity, and amonia content level, was very critical and relevant for better broiler production.The most important factors of comfort in broiler closed house including temperature, humidity, ammonia. Purpose were (1) designing the supervisory control system environmental parameters temperature, humidity and ammonia in broiler closed house, (2) assess the environmental characteristics of the parameters of temperature, humidity and ammonia in broiler closed house, (3) a model of environmental parameters of temperature, humidity and ammonia in the broiler closed house, (4) determine the optimal conditions supervisori control response parameter temperature, humidity and ammonia in broiler closed house, (5) the integration of environmental parameters supervisori control temperature, humidity and ammonia according to optimal conditions of control, knowledge of poultry and knowledge appropriate control environment in broiler closed house, (6) interconnect supervisory control environmental parameters temperature, humidity and ammonia in the broiler closed house in the form of software (software prototype) that can control one, two or three broiler closed house were connected to the computer network with remote with parallel computing. System of supervisory control for broiler closed house was a user interacts with the supervisory system to perform selection or determination of control modes, controlled parameters and optimality criteria for a certain poultry cultivated in a set of poultryhouses. Afterwards, the user preference specifications are passed to the Supervisory Control Engine (SCE) that performs the main supervisory computation scenario by utilizing the knowledge-base (control, climatic, broiler, and I/O knowledge). The SCE then produces set of control instructions to array of controllers that directly control and monitor a set of broiler closed house.The Control Knowledge-Base was a knowledge repository of various control methodologies, constraints, tools, and requirements. The Climatic knowledge-base stores all information about climatic parameters and characteristics. The poultry knowledge-base was a knowledge repository of poultry requirements, poultry types and characteristics. The I/O Knowledge-Base stores all relevant characteristics and usage requirements of I/O devices (sensors, transducers and actuators) that may be involved in a certain control scenario.The data used in this study included primary and secondary data. Primary data (floors, walls, rooms, and roof temperature) were obtained from measurements using an electronic measuring device. Secondary data (temperature, humidity, irradiation) was obtained from reports provided by BMG Bogor, including data processing model of moving heat broiler houses closed, predictive control parameters temperature, humidity and ammonia in Computational Fluid Dynamics (CFD), the results of mathematical modeling of temperature, humidity and ammonia obtained transfer function and the simulated supervisori control was ON- OFF control of Fuzzy Logic PID and ANFIS in the integration of one, two, three modes of control integration and interconnection networks in parallel computer simulations on
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Judul: Sintesis dan Pencirian Senyawa 4-Dodekanadioilbis(1-fenil-3-metil-5-pirazolon) sebagai Ionofor untuk Penentuan Ion Lu3+ dengan Teknik Elektrode Selektif Ion
Abstrak: Ion selective electrode (ISE) as an alternative potentiometric method is used widely in determining Lu3+. The success of this method depends on the ionophor used on the ISE. The compound of 4-dodecanedioylbis(1-phenyl-3-methyl-5-pyrazolone) or H2DdBP as pyrazolone derivatives will be used as ionophor on ISE-Lu3+. H2DdBP had been successfully synthesized by Jensen’s method. This method involved reaction of 1-phenyl-3-methyl-5-pyrazolone and dodecanedioyl chloride in basic condition. A compound was produced as a solid substance and was purified by recrystallization using chloroform-ethanol. High performance liquid chromatogram showed that the compound was pure. The compound was in keto form with melting point range of 150-152ºC. Infrared spectra showed vibration peaks (cm-1) were 3451 (br, OH), 1624 (s, C=O), 1589 (s, phenyl C=C), 1558 (s, pyrazolone ring). Chemical shifts (Hz) for 1H-NMR were 7.81–7.84, 7.43–7.46, 7.26–7.290 (m, 10H, Ph); 2.72–2.75 (t, 4H, (CH2)2); 2.47 (s, 6H, CH3); 1.71–1.76 (m, 4H, (CH2)2); 1.32 (m, 12H, (CH2)6). All of these properties showed the characteristics of H2DdBP. Nernst factor of ISE-Lu3+ for two repetitions were 10.40 mV/decade and 8.60 mV/decade which showed that ISE-Lu3+ had good response in determining Lu3+.
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