Claim Missing Document
Check
Articles

Found 27 Documents
Search

Intra-Industry Trade sebagai Alternatif dalam Mengatasi Dampak Krisis Global di Indonesia Yuliati, Lilis
Jurnal Trikonomika Vol 11, No 1 (2012): Edisi Juni 2012
Publisher : Jurnal Trikonomika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Issue of intra-industry trade (IIT) is increasingly discussed, since the concept was introduced by the Grubel-Lloyd in 1975. Empirically, the concept of IIT was developed in the 1980s in modern industrialized countries which coincidentally posses common endowment of factors, which tend to be capital intensive. The objectives of the study are threefold to obtain a figure of the intensity of IIT between Indonesia and ASEAN-4, to collect empirical evidence, examine and explain the factors that influence the intensity of IIT Indonesia with ASEAN-4. This study used Grubel-Lloyd Index and panel data analysis. The study showed the following results: Firstly IIT of Indonesian’ manufactures to ASEAN market-4 tend to experience a shift during the period 1985 to 2009 according to SITC categories The high commodity index in the initial year was declining over time in the subsequent years. Share intensity of IIT between Indonesia with four ASEAN member countries are included non IIT category because it was < 40%. Secondly, the intensity of IIT in manufactures based on ISIC category can be included in the category of IIT because it was ≥ 40%, namely 47.65%, while the remaining 52.35% is still belong to the non-IIT category. Thirdly, the estimation of the independent variables of the econometric model using FEM method, showed the following results: the intensity of labor and the economies of scale indicated no significant positive value. Market structure, product differentiation and dummy economic integration showed a significant positive value.
Karakteristik Pembakaran Difusi Campuran Biodiesel Minyak Jarak Pagar – Etanol / Metanol Pada Mini Glass Tube Dan Mini Copper Tube Al Banjari, M. Arsad; Yuliati, Lilis
ROTOR Vol 8, No 2 (2015)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.666 KB)

Abstract

Diffusion is performed combustion in diesel engines, biodiesel as a biofuel that is used to replace fossil fuels. Many studies have looked at the effects of a mixture of biodiesel fuel ethanol-methanol-diesel with different percentages in terms of engine performance and exhaust emissions, but have never done research on combustion characteristics. This paper discusses how the mix ratio diffusion combustion characteristics of biodiesel - ethanol / methanol on a mini glass tube burner and a mini copper tube burner. the results showed that the use of mini glass tube burner produces more explosions flame than mini copper tube burner. This is because the temperature of the mini copper tube is higher than the temperature of the mini glass tube, and fire explosion occurred because of thecohesionof theglasstubeto thefuel, so that theliquid fueloftenjumpoutofthe burner tipand thenthere was an explosionof fire, and alsocoolingthe fuelvaporwhen passing theminiglasstube. The lower of viscosity and boiling point properties can reduce explosion flame, and making the evaporationfuelmore better. Conclusion, the use ofmini copper tube burner, producesmore stable flamethanmini glass tube burner. and properties of biodiesel-methanol is better than biodiesel-ethanol. Keywords :Biodiesel, diffusion flame, combustion characteristics, mini glass tube burner, mini copper tube burner.
Kecepatan Pembakaran Premixed Campuran Minyak Jarak - Liquefied Petroleum Gas (LPG) pada Circular Tube Burner Riwu, Defmit B.N.; Wardana, I.N.G.; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 7, No 2 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (540.042 KB) | DOI: 10.21776/ub.jrm.2016.007.02.1

Abstract

This study was conducted to determine the characteristics of premixed combustion of a mixture of castor oil - LPG on a circular tube burner. Percentage of LPG fuel in a mixture of jatropha curcas oil - LPG varied as much as 10%, 20%, 30%, and 40% of the mass flow jatropha curcas oil vapor. Considering the flame of fire there are two angles formed which describe burning velocity. Also there are formed two cones of fire where the bright blue inside cone is a premixed flame, while the outer blue white cone is flame a diffusion flame. An increase in the percentage of LPG makes the value of top and bottom angle increase. So that the burning velocity on the upper angle decrease whilst on bottom angle increase.
Studi Numerik Pembakaran Butana (C4H10) dalam Meso Scale Combustor dengan Perforated Plate Baananto, Fauzan; Yuliati, Lilis; Hamidi, Nurkholis
Jurnal Rekayasa Mesin Vol 9, No 2 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.851 KB) | DOI: 10.21776/ub.jrm.2018.009.02.1

Abstract

This research was conducted to determine the combustion stability and flame temperature inside meso-scale combustor with variations of perforated plate flame holder and combustion gas temperature at combustor exit side using numerical method or Computational Fluid Dynamics (CFD). Meso-scale combustor is made of two pieces of quartz glass tube with a length of 20 mm and 10 mm. Each quartz glass tube having an internal diameter of 3.5 mm and a wall thickness of 0.7 mm. Two kinds of perforated plate flame holder made of copper i.e. perforated plate type I and perforated plate type II, inserted between two quartz glass tubes. Butane (C4H10) and air were used in this study as fuel and oxidizer, respectively. Numerical simulations were performed using ANSYS Fluent 17.0. The result of numerical simulation showed that the most stable combustion is obtained in meso-scale combustor by using flame holder in the form of perforated plate type II at higher reactant velocity. In addition, the combustor with perforated plate flame holder type II also produces a higher flame temperature at the same reactant speed. These phenomena occured due to the temperature distribution into the reactans is more uniform and the recirculation heats into the reactans is better than the combustor with perforated plate flame holder type I. Flame and combustor walls temperatures increased with increasing recirculation heats.
Studi Eksperimental Pengaruh Sumber Kalor Terhadap Distribusi Temperatur dan Temperatur Pendidihan pada Tapering Heat Pipe Sarip, Sarip; Sudjito, Sudjito; Yuliati, Lilis; Agus Choiron, Moch.
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i2.18

Abstract

Heat source of the heat energy can affected of the temperature distribution and the boiling temperature of the tapering heat pipe located on the evaporator. The purpose of this study was conducted to determine the effect of heat source on the temperature distribution and boiling temperature that occur in the tapering heat pipe. In this study, used heat pipe tapered shape of the copper pipe diameter of 10 mm and 20 mm as evaporator as condenser with a length of 200 mm. Tapering heat pipe inside there is a wick mesh screen serves as the axis of the capillary to the return liquid / backflow of fluid from the condenser to the evaporator. The condenser ends mounted a valve to inject the working fluid into the tapering heat pipe. K-type thermocouple is integrated with NI-9211 module and c-DAQ 9271 to measure the temperature distribution along the tapering heat pipe with a heat source of DC power supply for (25, 30, 35, 40, 45, 50) Watt. The results showed that there was a difference of temperature distribution and boiling temperature caused by the variations heat source. Temperature of distribution and boiling temperature which tends to increase in value the greater the heat source, so it can be concluded that the heat source has an influence on the temperature distribution and the boiling temperature of the tapering heat pipe with 50 Watt heat source generates temperature distribution and boiling temperature stable.
FAKTOR-FAKTOR YANG MEMPENGARUHI MINAT MASYARAKAT BERINVESTASI SUKUK Yuliati, Lilis
Walisongo: Jurnal Penelitian Sosial Keagamaan Vol 19, No 1 (2011): Ekonomi Islam
Publisher : LP2M - Universitas Islam Negeri (UIN) Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/ws.19.1.214

Abstract

This study aims to analyze the interrelationship between risk factors and product attributes that affect the public interest in Islamic Sukuk invest SR001 and to know the appeal of an independent Islamic Bank Sukuk SR001 in selling by investors point of view. The method used in this study is a survey, while the sukuk investor respondens is SR 001, amounting to 100 people. The research was conducted by distributing questionnaires with Likert's scale. The analytical technique used is multiple regression. Based on the results of research and discussion that has been done can be concluded that the risk of investment and product islamic attributes positive effect on the public interest to invest, it is evident from the results of the test statistic, the test F and test T.***Kajian ini bertujuan untuk menganalisis interrelasi antara faktor-faktor resiko dengan atribut produk yang mempengaruhi minat publik terhadap investasi Sukuk Islam SR001 dan untuk mengetahui daya tarik Sukuk Bank Islam SR001 menurut para investor. Metode yang digunakan dalam kajian ini adalah survei, sementara responden adalah investor sukuk SR 001 sejumlah 100 orang. Pe­neliti­an dilaksanakan dengan cara membagi kuisioner dengan skala Likert. Teknik analisis yang digunakan adalah regresi ganda. Berdasarkan hasil penelitian dan diskusi yang dilakukan dapat disimpulkan bahwa resiko investasi dan produk Islami berkait positif dengan keinginan publik untuk melakukan investasi. Ini tampak jelas dari penghitungan statistik dengan test F dan T.
Karakteristik Pembakaran Difusi Campuran Biodiesel Minyak Jarak Pagar (Jathropha Curcas L) - Etanol/Metanol Pada Mini Glass Tube Al Banjari, M. Arsad; Yuliati, Lilis; Sonief, Achmad As’ad
Jurnal Rekayasa Mesin Vol 6, No 1 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (985.498 KB) | DOI: 10.21776/ub.jrm.2015.006.01.12

Abstract

Diffusion is a combustion which is performed on a diesel engine, biodiesel as a biofuel is used to replace fossil fuels. Many studies have looked at the effect of a mixture of biodiesel fuel-ethanolmethanol-diesel with different percentages in terms of engine performance and exhaust emissions, but have never done research on the characteristics of combustion and interface evaporation. This paper discusses how the comparison of the characteristics of the diffusion combustion mixture of biodiesel and biodiesel-ethanol-methanol in mini glass tube. The results showed that the use of biodieselethanol occurred many explosions flame and lift off than biodiesel-methanol. Biodiesel-ethanol evaporation interfaces tend to be flat because there were many explosions so that the liquid fuel out of the burner. The use of biodiesel-methanol flame produces more stable than biodiesel-ethanol.
Analisis Pengaruh Bahan Bakar Alternatif pada Lemari Pengasap Ikan terhadap Kualitas Produk Hasil Asapan Nugroho, Setyawan Dwi; Soeparman, Sudjito; Yuliati, Lilis
Rekayasa Mesin Vol 9, No 3 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.719 KB) | DOI: 10.21776/ub.jrm.2018.009.03.6

Abstract

This study was conducted to determine the effect of the amount of fuel in the combustion chamber on the fish smoking kiln to temperature and temperature distribution in the smoke room as well as the quality of the smoked fish.This study used 3 types of fuel those are dry coconut shell, coconut fiber and sugarcane pulp briquette. Temperature needed in the smoke room for 3 hours is 80° C, andthe fish smoked ismilkfish. The result showed that to achieve the same smoking temperature, it required the amount of dry coconut shell as much as 1045 grams, while the coconut fiber as much as 1730 grams and sugarcane pulp briquette as much as 2055 grams. The temperature of each fishing point is relatively even with a maximum temperature difference of 1.38%, while the difference between the setting temperature and the temperature at the maximum fish points is 8.88%. It can be concluded that the heat value, particle density rate and combustion rate (heat release) of fuel affect the amount and distribution of fuel to the temperature change in the fish smoking room in the fish smoking kiln. The quality of smoked fish products with 3 types of fuels meets SNI 2725.1.2009.
Pengaruh Penambahan Langkah Kerja terhadap Unjuk Kerja Motor Bakar Gunawan, Chandra; Siswanto, Eko; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 10, No 3 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.03.1

Abstract

The duration of fuel-air diffusion in the 4 stroke combustion engine is relatively short, which is 0.02 seconds at 3000 rpm so that at high rotation the level of homogeneity of the fuel-air mixture becomes low. The addition of steps in a 4 stroke combustion engine to a 6 stroke combustion engine is expected to increase the duration of mass diffusion and temperature in the air-fuel mixture. So that the homogeneity of the air-fuel mixture increase and more expansion power of the combustion results. Engine performance testing by reducing the engine speed of 400 rpm at the initial condition of the throttle valve opening by 30% then the results of the performance of the two motors will be compared. The test results show an increase in power and torque in a 6 stroke combustion engine compared to a 4 stroke combustion engine at the same rotation conditions of 15%. As for the value of the specific fuel consumption effective (SFCe), thermal efficiency, and exhaust gas emissions of Hydrocarbon (HC) 4 stroke fuel is still better.
ProduksiI Brown’s Gas Hasil Elektrolisis H2O Dengan Katalis NaHCO3 Marlina, Ena; Wahyudi, Slamet; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 4, No 1 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (316.397 KB)

Abstract

This research is intended to investigate the effect of NaHCO3 (Natrium Bicarbonate) percentage on the performance of HHO (Brown’s Gas) production using electrolysis method. Performance of HHO production that was observed in this research were electric power that used for HHO production as well as rate and efficiency of HHO production. Electrolysis is decomposition of water molecules (H2O) into hydrogen and oxigen molecules (HHO) using electricity in an electrolite solution. This process takes place when two electrodes (anode and cathode) placed in the water and direct electric current flowed through the system. In this research Natrium Bicarbonate was dissolved in the water to increase the rate of electrolysis process. Percentage of Natrium Bicarbonate was varied from 2,5% – 15%. The results show that electric power that used for HHO production and rate of HHO production were increased with the increasing of Natrium Bicarbonate percentage and reach their maximum value at 12,5% Natrium Bicarbonat. However maximum value for electrolysis efficiency was occurred for Natrium Bicarbonate percentage of 10%.Keywords: Brown’s Gas, Electrolysis, NaHCO3 (Natrium Bikarbonate), Performance of electrolysis process