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INDONESIA
TEKNIK
Published by Universitas Diponegoro
ISSN : 08521697     EISSN : 24609919     DOI : -
Core Subject : Engineering,
Engineering
Journal yang mempublikasikan artikel-artikel ilmiah dari berbagai disiplin ilmu rekayasa/keteknikan. Artikel-artikel yang dipublikasikan di Jurnal TEKNIK meliputi hasil-hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), atau komentar atau kritik terhadap tulisan ilmiah yang dipublikasikan oleh Jurnal TEKNIK.
Arjuna Subject : -
Articles 13 Documents
 1   2 
Search results for , issue "Volume 28, Nomor 1, Tahun 2007" : 13 Documents clear
RISK ANALYSIS STUDY OF NOx, and SOx FROM TRANSPORTATION (CASE STUDY: MAIN STREETS OF D.I. JOGJAKARTA) Arief Budihardjo, Mochamad
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.826 KB) | DOI: 10.14710/teknik.v28i1.2042

Abstract

The air pollution problems have been progressively set attention to the world especially industrialcountries recently. These problems not only give affect at health like emphysema, bronchitis, and otherinhalation disease but also make plants and properties destruction causes very big loss. This research isconcerned with the risk level which is accepted by people who reside in roadside because most of airpollutants come from transportation facilities such as motor vehicle. The limitation of the research is airpollutants exposure such like NOx, and SOx which enter the body through respiration. This risk analysisresearch is broken down into four step as follow; hazard identification showing NO2, and SO2concentration in 15 sampling locations where the highest value of NO2 is 56,5 μg / m3 and SO2 is 28,87μg/m3. According to DIY Governor Regulation No. 153 Year 2002 about the value of ambient air qualitystandard, quality standard of NO2 is 400 μg / m3, and SO2 is 900 μg / m3. It can be concluded thatconcentration of NO2 and SO2 in 2005 within all sampling locations is still under of quality standard. Thestep of exposure assessment involves the exposed population including pedicab worker, park worker, andcloister merchant. From calculation, the intake range of NO2 enters the body is 0,0025-0,0075 mg/kg.dayand SO2 is 0,0008-0,0038 mg/kg.day. Third step is dose-response assessment to find out what will be facedby people if exposure of pollutants occurs in a certain dose. The last step is risk characterization, theresult of research is that risk value / Hazard Index (HI) less than 1 that still acceptable. It can besummarized that the ambient air quality of Jogjakarta especially NO2 and SO2 gas do not too adverse tohealth.
KAJIAN PELEPAH KELAPA SEBAGAI SERAT KOMPOSIT (STUDY OF COCONUT BRANCH AS COMPOSITE FIBER) Darmanto, Seno; Sediono, Windu; Setyoko, Bambang; Murni, Murni
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (188.107 KB) | DOI: 10.14710/teknik.v28i1.2075

Abstract

Research is done to analyze coconut branch fiber as car body composite. Analyzing is based onmaterial, composition, and strength of material. Research was done in laboratory. Coconut branchfiber is obtained by natural drying process and cutting to become fiber with ±0,5 mm of length.Reinforcement and binder is determined polyester resin. Coir (coconut fiber) have 1.15 kg/m3 ofdensity, 1.15 MPa of strength dan modulus elastisitas 4 – 6 GPa. And based on specimen and studyof literatures can show that increase of cellulose of natural fiber will increase modulus of elasticity.The Increasing of modulus of elasticity will be maximal with cellulose more than 60%. Color ofspecimen is transparent yellow.
SURVEI TOPOGRAFI UNTUK MENENTUKAN GARIS TAMPAK PANDANG BASE TRANSCEIVER STATION (BTS) Laila Nugraha, Arief; Sudarsono, Bambang
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1777.704 KB) | DOI: 10.14710/teknik.v28i1.2029

Abstract

Base Transceiver Station (BTS) representation one of appliance of supporter of telecommunicationsnetwork. The development of BTS have to each other in circuit by other BTS or which have been planned.The situation BTS in circuit between other BTS without obstacle are called Line of Sight (LoS). Thetopographic survey is method of survey work to make sure the Line of Sight BTS. The topographic surveyconsist of GPS survey and study map for determination of high of BTS antenna and the Line of Sight ofBTS can be made.
RISK ANALYSIS STUDY OF NOx, and SOx FROM TRANSPORTATION (CASE STUDY: MAIN STREETS OF D.I. JOGJAKARTA) Arief Budihardjo, Mochamad
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.826 KB) | DOI: 10.14710/teknik.v28i1.2047

Abstract

The air pollution problems have been progressively set attention to the world especially industrialcountries recently. These problems not only give affect at health like emphysema, bronchitis, and otherinhalation disease but also make plants and properties destruction causes very big loss. This research isconcerned with the risk level which is accepted by people who reside in roadside because most of airpollutants come from transportation facilities such as motor vehicle. The limitation of the research is airpollutants exposure such like NOx, and SOx which enter the body through respiration. This risk analysisresearch is broken down into four step as follow; hazard identification showing NO2, and SO2concentration in 15 sampling locations where the highest value of NO2 is 56,5 μg / m3 and SO2 is 28,87μg/m3. According to DIY Governor Regulation No. 153 Year 2002 about the value of ambient air qualitystandard, quality standard of NO2 is 400 μg / m3, and SO2 is 900 μg / m3. It can be concluded thatconcentration of NO2 and SO2 in 2005 within all sampling locations is still under of quality standard. Thestep of exposure assessment involves the exposed population including pedicab worker, park worker, andcloister merchant. From calculation, the intake range of NO2 enters the body is 0,0025-0,0075 mg/kg.dayand SO2 is 0,0008-0,0038 mg/kg.day. Third step is dose-response assessment to find out what will be facedby people if exposure of pollutants occurs in a certain dose. The last step is risk characterization, theresult of research is that risk value / Hazard Index (HI) less than 1 that still acceptable. It can besummarized that the ambient air quality of Jogjakarta especially NO2 and SO2 gas do not too adverse tohealth.
PEMANFAATAN ECENG GONDOK (EICHHORNIA CRASSIPES (MART.) SOLMS.) DALAM PENYISIHAN LOGAM BERAT CHROM (CR) PADA LIMBAH ELEKTROPLATING Sumiyati, Sri; Hadiwidodo, Mochtar
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.034 KB) | DOI: 10.14710/teknik.v28i1.2076

Abstract

Effluent that is produce by the electroplating industry, especially nickel chrome plating, contains chromemetal that is carcinogenic. The toxicities from chrome are caused by its ability to dissolve and it’s mobilityin the environment. An alternative treatment to reduce chrome is called fitoremediasi which uses plants asits indicator; in this case we use water hyacinth.At the preface experiment, we tried to plant mature water hyacinth in electroplating waste. First we tried toplant in 100% waste water in witch we repeated it 3 times. At the 3rd week; day 18; the plants becameyellowish and became wilted. Knowing this fact, we applied the time for our experiment the we were goingto executed, with assuming at the 18th day the plants will become wilted as an indicator that the waterhyacinth are saturated in adsorbing chrome as the heavy metal pollutant. This became the parameter indesigning the time treatment for the plant zone, 4 until 15 days.The treatment was done by making variation in the amount of plants that are planted, which was 0 plants(as the control), 1 plant, 2 plants, 3 plants, and 4 plants; with 3 times repeating at each stage. The result ofthis experiment after 18 days shows the chrome concentration and the efficiently in decreasing theconcentration on each stage. The highest efficiently for each plant was the treatment by 1 plant only. Thehighest efficiently in decreasing the concentration was 78,95% ad it was done by the treatment with 4plants. To get chrom concentration which is fill with the standard, we can add more water hyacinth into thewaste with the balance equivalent or we need the lower beginning concentration.
TEKNOLOGI PEMETAAN DIGITAL UNTUK PENGEMBANGAN KAWASAN PEMUKIMAN PERUMAHAN ( STUDI KASUS : BUKIT SEMARANG BARU- SEMARANG) D Yuwono, Bambang; Hani’ah, Hani’ah
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.031 KB) | DOI: 10.14710/teknik.v28i1.2035

Abstract

In recent years the requirement of housing have been growing, such growth of population requires theimprovement of quality and quantity. As consequence, the developer which has responsible for this, shouldincrease and apply the enhanced technology. BSB is one of the biggest developer in Central Java hadapplied the digital mapping as solution for developing area.This research is purposed to study and evaluate application of digital mapping for developing housingcoverage area. The study is started from the fact that with using conventional tool of measurement can nothandle the project which need speed, accurate manage data to develop area. .Using digital mappingControlling and maintaining data more easily and Accurate.
MESIN PENGERING KAYU SEDERHANA UNTUK HOME INDUSTRI Murni, Murni
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.354 KB) | DOI: 10.14710/teknik.v28i1.2072

Abstract

Dryer machine of wood is made to fulfill need of wood in order to produce raw of drying wood is notdepended weather. Making of dryer of wood usually requiree investment cost more expensive . it is heavyfor home industry .Inovation of simple dryer machine is done with flowing steam naturally and base onanalyzing it shows that drying can achieve moistur content 12 persen
STUDI POTENSI PEMANFAATAN NILAI EKONOMI SAMPAH ANORGANIK MELALUI KONSEP DAUR ULANG DALAM RANGKA OPTIMALISASI PENGELOLAAN SAMPAH (Studi Kasus : Kota Magelang) Dwi Nugraha, Winardi; Ambun Suri, Denok; Syafrudin, Syafrudin
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.561 KB) | DOI: 10.14710/teknik.v28i1.2077

Abstract

Waste composition of Magelang City in the year of 2006 consists of 69, 65% organic waste and inorganicwaste 30, 35%. This composition indicates that Magelang City have potency to lessen its waste by applying3R concept and by optimizing the role of trash collector in managing inorganic waste. The existing wastemanagement condition shows that organic and inorganic wastes are not separated yet from its source. As aresult, inorganic waste (which is still economically valuable and still can be recycled) was brought to TPS.The target of this research is to find the waste amount and potency that can be recycled. These resultcontinued by planning the operational technique with 3R concept in Magelang City Waste Management.The research method in measuring volume and composition of waste is according to SNI 19-3964-1994.The result shows in year 2007, the quantity of inorganic waste that economically valuable beforeoptimalization is 1880,625 kg/day (4 %) and after optimalization is 6245,28 kg/day (13,28 %). While theincome of trash collector increase from Rp. 2.424.871,00 per day to Rp 8.052.679,00 per day. By applyingthis concep,t the waste managed by trash collector will increase495,67% from17,77 m3/day become 105,87m3/day in the year of 2023. Beside, by applying this 3R concept Magelang City can reduce the wasteoperational cost equal to 14, 27%.
PENENTUAN KONDISI OPERASI OPTIMAL PADA PENYULINGAN MINYAK NILAM Setyoko, Bambang
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.48 KB) | DOI: 10.14710/teknik.v28i1.2037

Abstract

Patchauly distillation is a process where oil can exctract from patcahauly’s leaf, branch, stem and root.Patchauly’s branch, stem and root had randement lower than patchauly’s leaf.This research used vacuum distillation methode at low temperature and low pressure. The experiment wasdone repeatedly at different pressure and temperature. Than experiment’s data was analysed in laboratoryand compared than standard.The highest purity of patchauly oil is 28 %, efficiency 2,5 % at temperature 80oC and used pressure -50 cmHg
STUDI PEMBENTUKAN ZONE JARINGAN PIPA DISTRIBUSI AIR MINUM KOTA SEMARANG (Wilayah pelayanan PDAM SEMARANG UTARA ) Nasrullah,, Nasrullah; Arief Budihardjo, Mochamad
TEKNIK Volume 28, Nomor 1, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.078 KB) | DOI: 10.14710/teknik.v28i1.2073

Abstract

Semarang City’s drinking water distribution system in the North Semarang uses an interconnectionnetwork system. This causes difficulty in optimizing the network distribution supply and controlling thewater leakage. Semarang City’s drinking water provider is planning to divide the area in to 25 zones. Thisstudy purpose to plan one of the zone areas, which is zone 1. The existing condition on zone 1 shows thatthe water source is from Siranda distribution reservoir. The water flows by the gravitation. The distributionpressure on the pipe network is not even. Pressure drop between 3 to 7 m water columns at the peakcondition on the end of the furthest point in the network. The strategy in planning the network is by cuttingthe interconnection pipe, providing new pipes, closing the existing valves, adding new valves for isolatedareas, adding primary water meter and sub zone water meter and moving the interconnection pipes. Then,the distribution system is analyzed using Epanet 2.0 program that can show the effort of the changes after.The system shows that there is no more pressure drop on the area. The pressures are between 11-16 meterwater column and the water flow in the pipes are more alike, between 0,3 to 3 m/s. The PDAM can observethe distribution and the water leak more easily by using this system.

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