In each welding technology each has advantages in accordance with the placement of its implementation. One of the welding technologies is the SMAW (shield metal arc welding) has an advantage over the current and the welding angle can be varied, and the penetration width of the electrode fuses can be adjusted. This research uses SMAW welding machine with sliding adaptive vertical system design f…
One of the welding technology is SMAW (Shielded Metal Arc Welding) has its own advantages, such as, the current as the heat source used can be varied, easy to use in various welding positions, penetration and the electrode width of welding can be adjusted. In order for proper welding speed, this research uses SMAW welding machine with sliding adaptive vertical system that varies the flow and we…
Energy sustainability is the world's major attention at this time. Many attempts were made in order to save the continuity of the energy. One of them by using renewable energy sources and by improving the energy efficiency of the system is an important option for future energy sustainability. In biogas power plants exergy analysis is very important to be applied, with this analysis, we can know…
Environmental pollution as well as the amount of energy consumption is one of the biggest problems of air conditioning and refrigeration systems used today, so it needs technology that is environmentally friendly and energy efficient. Adsorption chiller is one of the technologies for air conditioning and refrigeration system that is energy efficient and environmentally friendly because the refr…
Adsorption cooling system double bed with silica gel as adsorbent and water as the adsorbate is expected to reduce the use of refrigerant in the vapor compression system that utilizes refrigerant CFC (hlorofluorocarbon) and HCFC (hydrochlorofluorocarbon) that could potentially damage the ozone layer and increase global warming. This study aims to increase the value of the COP and SCP adsorption…
In this research refers to the variation of the surface geometry design of the motorcycle disc brake pads. In this study analyzed is the stress that occurs on the surface of the disc brake pads. The results of the disc brake pads analysis in the study will be evaluated and compared with commercial brake pads products. The purpose of this study was to obtain the surface geometry of the disc brak…
Induction motor plays an important role in the industrial realm that serves as a driving parts such as the conveyor, lathes and others. Regarding to this important role, the early detection of induction motor damage becomes important for system operation, so that it could not stopped without scheduled. The types of damage that often occur in induction motor are mechanical unbalance, rotor damag…
One of the reasons for the poor quality of palm oil in Indonesia is because of the separation system of processing method is processed manually. In this research, the proposed solution to overcome the problem is by applying the automatic separation system by using microcontroller. The maturity of the fruit will be determined from the image that taken by a camera. The reading of the camera image…
Rotating machines that have been operating within a certain period of time there is frequent vibration. The vibration is usually caused by unbalance, misalignment, bearing defect, and others. Unbalance is ranked first cause of vibration, where more than 80% cases of vibration caused by unbalance. This condition causes the balancing process needs to be done. A commonly used method is vibration m…
The pipeline system leads an important role in ubiquitous feature of modern society and industrial which is used as one of the high integrity fluid transport function, but has a major problem such as leakage and blockage. Detection methods are typically performed using ultrasonic pressure and wave differences at a relatively high price. The research method used is detection by using sound signa…
The most common cause of Chronic Suppurative Otitis Media (CSOM) is Pseudomonas aeruginosa. These bacteria have a lot of resistance to synthetic antibiotics, therefore we need to look for other alternative antimicrobials from natural materials that available in our country. One of them is Virgin Coconut Oil (VCO). VCO is made from freshly coconut meat that processed without refining (bleacing a…
Diazepam is a psychotropical drug which is commonly abused. Diazepam have hypno-sedative, anti-convulsive and anti-insomnia effects. Psychtropic abuse is a law violation, and it can be proved by using immunoassay studies followed by confirmation methods. This study is aimed to determine the presence of diazepam in urine using Right Sign cassette rapid test on samples stored at a 250C temparatur…
Forest fires were one of the caused of rapid forest destruction that could negatively affect the ecosystems of the world. Adverse effects of forest fire smoke had an impact on health. Forest fire smoke contained particles and gases that could contaminate the air, including carbon monoxide (CO), sulfur dioxide (SO2), particulate matter (PM), and Benzo-a pyrene which could cause interruption of t…
Macroporoous microcarrier is one of tissue engineering technology that consist of support matrix and can be used as a cell culture medium in bioreactor. Protein foaming-starch consolidation method is choosed for manufacturing porous hydroxyapatite with egg yolk as a pore-forming agent. The purpose of this study was to determined the effect of yolk addition, sintering temperature, and drying tem…
Tuberculosis (TB) disease is a transmitted infection that caused by Mycobacterium Tuberculosis (M. Tuberculosis). In 2015, Indonesia is in the 2nd place after India in the world and the case of TB in Indonesia increases twice from the previous year which is about 1 million new cases per year. The success full of a program is determined by the patients’obedient in consuming medicine completely…
Processing of palm oil into Crude Palm Oil (CPO) will produce a large amount of liquid waste. To produce a ton of crude palm oil (CPO) produced 6 m3 of palm oil mill effluent. In this study, a process for removing organic compounds in wastewater using the advanced oxidation process by combining peroxymonosulfate (2KHS5.KHSO4.K2SO4) and a catalyst of LaMnO3 Perovskite. The combination will produ…
The aim of this research is to produce an Oersted experimental device to support laerning prosess of junior and also senior high schools. In this development research method, we have developed Oersted experimental device and its guide through the step of ADDIE method. Three leacturs of physics education and two physics teachers were participant is expert and user repectly. They asked to asses t…
One material that has potential as raw material for bioethanol is the pineapple peel. Pineapple peel is one of the biggest agricultural waste in Indonesia, especially in Riau derived from pineapples. Pineapple peel can be used as raw material for bioethanol production due to contains of fiber, carbohydrates and glucose. This study was conducted to produce ethanol by fermentation of pineapple pe…
The aim of this research was to produce student worksheet with comprehensive intelligence based on PBL model’s on learning physics class X in SHS was valid. This research type using Research & Development (R & D). The subject of this research was teaching materials in the form of student worksheet 1, student worksheet 2 and student worksheet 3 validated by validator consisting of 3 lectu…
This study aims to test the validity of experimental devices and experimental devices with Rnd method. Validity test was conducted at the Learning Media Development Laboratory of Physics Education Study Program of Physics Education Department of PMIPA Faculty of Teacher Training and Education University of Riau. This research was conducted from April to June 2017. With 3 lecturers validator who…