Pemodelan Sistem Fisis Dan Simulasinya Dengan Menggunakan Bondgraph Dan Software 20-Sim 3.2

To model a physical system needs many various aspect of system behaviour. Usually, the result is in the differential equation. There are many methods in finding this model, one of them is Bondgraph. This paper will discuss how to use this method to model simple physical system and simulate it using 20-Sim software from University of Twente, The Netherlands. The experimental result shows that we can build a model using Bondgraph easily. In 20-Sim, there are several facilities that will enable user to simulate both in graphics or 3D model

Modul Bi-lingual Untuk Televisi Dengan Menggunakan SAA7283ZP Yang Diatur Lewat I2C Dari 80C31

At the moment, in Indonesia has been able to enjoy NICAM (Near Instantaneous Companded Audio Multiplex ) technology within the television world. Television without NICAM facility, however, can receive the broadcast of the transmitter with NICAM technology, although it emits mono audio signal only. To receive broadcast with NICAM audio quality, TV audience, therefore has to buy a new set of television equipped with NICAM facility. Dealing with the problem, a module that can externally added to the television was made so that the audience of television with non-NICAM technology can enjoy the system itself. The module used the single chip NICAM decoder SAA7283ZP of Phillips semiconductor that can be adjusted using microcontroller software. The module receives IF signal taken from TV tuner and separates the audio and video signal present. SAA7283ZP controlled by 8031via I2C that is stimulated by 2 pin port 1, then takes and processes the audio 'data' . The output of the process is entered in a separated audio system, the testing result conceals that the occuring error is mostly influenced by the quality of RF signal received by the television set. This result is obviously seen as the testing system employs indoor and outdoor antennas. Besides that, improper grounding the system also affects the module in processing the NICAM signal

Aplikasi Scada System Pada Miniatur Water Level Control

The paper discuss the implementation of Miniature Water Level Control which is made as a simulation from the industrial process. These project is equipped with SCADA to give a real visualisation of industrial process. To make the controlling and monitoring process easier, the project is made in small size (miniature model) which is easy to be brought (portable). .Miniature water level control was made as a plant which is controlled by PLC. There are two PLCs which is used, i.e. OMRON CPM1 and MODICON TSX Micro 3721. The computer, in this case the SCADA software, will visualize the process which is happened on the plant. From the experiment which is done, the plant can give the good response and keep the water level on the desired height. The system is stable when the height of water is the same as the set point. PID Control bias method (pump_voltage = bias + error) is used to run these system

Communication Between TSX Micro 37-21 PLCs on Beverage Production Plant

Programmable Logic Controller (PLC) is the most famous controller in industry. Because the process in industry is getting more and more complex than before, the USAge of more than one PLC is needed and the communication between them have to be existed. This paper describes about the study of communicating two Schneider TSX Micro 37-21 PLCs in order to control the miniature of beverage production. The usual (and expensive) way to communicate them is using converter module TSX P ACC 01. Less expensive way uses original converter cable TSX PCX 1031 that connect to the ports of PLCs (TER and AUX port) which will be explained here. PL7 Pro V 4.0 software is used to program the PLCs. The communication cannot be established due to some improper addressing. The exploration is continued to the serial communication. It is found that the system uses RS 485

Miniatur Loading Arm Dock-3 PT Badak NGL Bontang Dengan Sistem Emergency Shut Down (ESD)

Loading Arms in PT Badak NGL are used to distribute natural gas for shipping. The position of the ship cannot be fixed due to the wind, sea wave, stream flow, etc. If the distance is out of tolerance limit, then the Emergency Shut Down (ESD) system will be activated. ESD will release the part that is connected to the ship so that the whole distribution pipe is safe. The loading arms are controlled via Programmable Logic Controller (PLC) manually. The miniature of the loading arms is useful to train the new employees to operate them well. It is build with 1:10 ratio and controlled by PLC OMRON C200 HG. Several DC motors are used to move the arms while potentiometers are used as position sensors. The PLC will monitor whether the position is within tolerance limit or not. From the experiments, the ESD can be implemented with 16.48s for slewing motion and 16.5s for extension motion

Studi Tentang Penguat Cascade Dua Tingkat Menggunakan JFET

Cascade amplifier has more than one stages on the circuit configurations. The purpose of cascade amplifier using JFET is to get larger voltage gain also with large input impedance. Except CS-CS cascade amplifier, cascade amplifier using JFET never studied in every literature. This research focuses on the two stage cascade amplifier using JFET for nine circuit configurations, i.e. CS-CS, CS-CD, CS-CG, CD-CS, CD-CD, CD-CG, CG-CS, CG-CD, and CG-CG. From those nine configurations, the interest is to see gain characteristic and to compare one another. This paper uses JFET 2N5457 type with specification IDSS = 5 mA and VGS(off) = -6 V also specified one of DC bias parameter in the active region that is IDQ = 2 mA. The voltage gain is measured by giving voltage input from 50 mV (Vp-p) until 1000 mV (Vp-p) at 1 KHz. There are some recommendations, one of them is that the CS-CS cascade amplifier is amplifier with the largest voltage gain

Antimicrobials: A Global Alliance For Optimizing Their Rational Use In Intra-abdominal Infections (agora)

Intra-abdominal infections (IAI) are an important cause of morbidity and are frequently associated with poor prognosis, particularly in high-risk patients. The cornerstones in the management of complicated IAIs are timely effective source control with appropriate antimicrobial therapy. Empiric antimicrobial therapy is important in the management of intra-abdominal infections and must be broad enough to cover all likely organisms because inappropriate initial antimicrobial therapy is associated with poor patient outcomes and the development of bacterial resistance. The overuse of antimicrobials is widely accepted as a major driver of some emerging infections (such as C. difficile), the selection of resistant pathogens in individual patients, and for the continued development of antimicrobial resistance globally. The growing emergence of multi-drug resistant organisms and the limited development of new agents available to counteract them have caused an impending crisis with alarming implications, especially with regards to Gram-negative bacteria. An international task force from 79 different countries has joined this project by sharing a document on the rational use of antimicrobials for patients with IAIs. The project has been termed AGORA (Antimicrobials: A Global Alliance for Optimizing their Rational Use in Intra-Abdominal Infections). The authors hope that AGORA, involving many of the world's leading experts, can actively raise awareness in health workers and can improve prescribing behavior in treating IAIs.11NIAID NIH HHS [R01 AI117211

Antimicrobials: a global alliance for optimizing their rational use in intra-abdominal infections (AGORA)

Intra-abdominal infections (IAI) are an important cause of morbidity and are frequently associated with poor prognosis, particularly in high-risk patients. The cornerstones in the management of complicated IAIs are timely effective source control with appropriate antimicrobial therapy. Empiric antimicrobial therapy is important in the management of intra-abdominal infections and must be broad enough to cover all likely organisms because inappropriate initial antimicrobial therapy is associated with poor patient outcomes and the development of bacterial resistance. The overuse of antimicrobials is widely accepted as a major driver of some emerging infections (such as C. difficile), the selection of resistant pathogens in individual patients, and for the continued development of antimicrobial resistance globally. The growing emergence of multi-drug resistant organisms and the limited development of new agents available to counteract them have caused an impending crisis with alarming implications, especially with regards to Gram-negative bacteria. An international task force from 79 different countries has joined this project by sharing a document on the rational use of antimicrobials for patients with IAIs. The project has been termed AGORA (Antimicrobials: A Global Alliance for Optimizing their Rational Use in Intra-Abdominal Infections). The authors hope that AGORA, involving many of the world's leading experts, can actively raise awareness in health workers and can improve prescribing behavior in treating IAIs