| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 107-115 |
| Abstraksi Narasi | : | Water quality for boiler feed water influences the boiler efficiency and life-span. This paper describes simple methods of water treatment to remove suspended matter. The methods selected for removing suspended matter are setting, coagulation, and filtration. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 69-81 |
| Abstraksi Narasi | : | The pressure to save energy has incited attempts to increase efficiency in engines or energy generators. The decreasing source of but the increasing need for petroleum has challenged a number of efforts to find alternative sources of energy. this paper is a report of our research to investigate the efficiency of fuel oil palm in comparison to diesel fuel oil palm when used as fuel in an automative diesel motor. One advantage of fuel oil palm is that the plant can be replanted and thus it may become the eternal source of energy. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 47-52 |
| Abstraksi Narasi | : | Solving the partial integral, one of the integral formula with the general formula of The partial integral solution with general formula: Integral UdV = UV - Integral VdU; U=U(x) and V=V(x) not to simple, and usually the mistake in accordance with placement of (+) or (-) signs. The correction its solution needs relatively long time. In comparison with general formula of partial integral, this method is easier in use and needs short time in solution, using the general formula is not a simple matter and errors in labeling (+) or (-) are frequent. The present paper describes a method which simplifies the calculation of the partial integral. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 117-123 |
| Abstraksi Narasi | : | In the present study the piston , which is aluminium AC-8A, is made through the gravity casting process, using the metal casting mould. The aluminium, before being poured into the cavity, is in the eutectic condition, where Al, Si, Mg, and Cu are completely dissolved. To change from the hyper-eutectic to the eutectic condition phosporus on the piston, while the hardness test is used to study the mechanical properties of it. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 1-12 |
| Abstraksi Narasi | : | Among the important factors influencing the quality of machining piece work are cutting tools. This paper studies the influence of the geometry of cutting tools in determining the life-span and quality of machining piece work. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 21-33 |
| Abstraksi Narasi | : | Modeling a car body structure, a very important process in car design, simulates the efects of external forces on the body so that experimental work and costs may be reduced. This paper describes the modeling process of the Daihatsu Zebra using the "Program for Automatic Finite Element Calculation" (PAFEC). |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 83-92 |
| Abstraksi Narasi | : | This study investigates the comfort of a room cooled with a ceiling air conditioning system by measuring the air temperature, air velocity, mean radiant temperature, and humadity. These data were used to calculate "predicted mean vote" (PMV) values, from which "predicted percentage dissatisfied" (PPD) could be determined. The PMV and PPD values, which were used to determine the comfort of the climate and the degree of satisfactions, respectively, indicate that the room had a climate close to optimal comfort. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 13-20 |
| Abstraksi Narasi | : | Pipe networks are found in many aspects of daily lifes, from simple to very complex systems. This paper aims to provide--in a simple and systematic way-- a manual for design and analysis of pipe networks that can benefit all users. |
| Nama Pengarang | : | Wegie Ruslan, Harjadi Gunawan, Dwi Ananto, Djoko Setyanto, Anthon de Fretes, Harry Sunardi, Agustinus Silalahi, J. Djoko Surono Widodo, Makdin Sinaga, Paulus Veryadi, Isdaryanto Iskandar |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 53-67 |
| Abstraksi Narasi | : | This paper presents the application of swirling jets in large buildingd and in combustion chambers for piston engines. To obtain a swirling jet, the air enters the inlet port of the combustion chambers through a valve with several blades mounted on it. The blades may also be mounted inside the orifice (manifold) near the exit hole. The flow of swirling jets was presented by a nondimensional swirl number, which can be derived from "navier stokes" equations. The analysis shows that the stronger the swirl the higher the swirl number will be. The experimental result shows that the best turbulence intensity is for the valve with 60 degrees of inclination of the blades mounted on it. |
| Nama Pengarang | : | - |
| Nama Majalah/Jurnal | : | Atma nan Jaya |
| Volume / Nomor Edisi | : | - |
| Nomor Halaman | : | 53-68 |
| Abstraksi Narasi | : | Thromboembolic disease occurs relatively often in often patients with cancer and is a significant cause of morbidity and mortality. Thrombosis in these patients may appear in unusual locations and may be both recurrent and refractory to standard therapy. The prophylaxis of venous thrombosis might be recommended in all cancer patients. |
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