scholarly journals PENGARUH PENGGUNAAN CATALYTIC CONVERTER BERBAHAN ARANG KAYU ALABAN DENGAN ADITIF TEMBAGA (Cu) TERHADAP EMISI GAS BUANG DAN KONSUMSI BAHAN BAKAR PADA TOYOTA KIJANG 5K

JTAM ROTARY ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Ade Sulton ◽  
Abdul Ghofur
Keyword(s):  
Fuel Consumption ◽  
Catalytic Converter ◽  
Gas Analysis ◽  
Hole Diameter ◽  
Wood Charcoal ◽  
Test Results ◽  
Independent Variable ◽  
Stationary Conditions ◽  
Environment Agency ◽  
Exhaust Gas Emissions

Penelitian ini bertujuan untuk mengetahui hasil emisi gas buang dan konsumsi bahan bakar pada penggunaan arang kayu alaban dengan aditif tembaga dengan variasi diameter lubang, campuran dan rpm. Data penelitian ini diperoleh dari hasil pengujian menggunakan analisis gas di Badan Lingkungan Hidup dan uji konsumsi bahan bakar, data variabel bebas menggunakan campuran arang kayu alaban 82,5%, aditif tembaga 7,5%, PVA 10% dan kayu alaban 87,5%. Arang, aditif tembaga 2,5%, PVA 10%, dimensi diameter lubang 15 mm dan 20 mm, idle RPM, 1500, 2500, 3500. Variabel terikatnya adalah mobil Toyota Kijang 5K. Variabel kontrol yang digunakan adalah pengujian emisi gas buang yaitu CO2, CO, HC dan O2 serta pengujian konsumsi bahan bakar. Dari hasil tersebut peningkatan CO2 terbesar adalah 67,46% pada komposisi B rpm 2500, penurunan CO terbesar 75,69% pada komposisi B rpm 3500, mengalami penurunan terbesar pada HC 81,67% pada komposisi B dan kondisi stasioner, penurunan O2 terbesar adalah 40,7% pada komposisi B rpm 2500. Dari hasil pengujian konsumsi bahan bakar mengalami penurunan terbesar yaitu 13,33% pada diameter lubang Komposisi B 15 mm rpm 1500. This study aims to determine the results of exhaust emissions and fuel consumption in the use of alaban wood charcoal with copper additives with variations in hole diameter, mixture and rpm. The data of this study were obtained from the results of testing using gas analysis in the Environment Agency and fuel consumption test, independent variable data used a mixture of 82.5% alaban wood charcoal, 7.5% copper additives, 10% PVA and 87.5% alaban wood charcoal, 2.5% copper additive, 10% PVA, dimensions of hole diameter 15 mm and 20 mm, idle RPM, 1500, 2500, 3500. The dependent variable is a 5K Toyota Kijang car. The control variables used were exhaust gas emissions testing namely CO2, CO, HC and O2 and fuel consumption tests. From these results the largest increase in CO2 was 67.46% in the composition of B rpm 2500, the largest decrease in CO 75.69% in the composition B rpm 3500, experienced the largest decrease in HC 81.67% in composition B and stationary conditions, decreased O2 the biggest is 40.7% in composition B rpm 2500. From the test results, the fuel consumption has the largest decrease of 13.33% in the hole diameter Composition B 15 mm rpm 1500.

Research on Gasoline Antiknock Additive Affect to Vehicle

2012 ◽  
Vol 588-589 ◽  
pp. 173-177
Author(s):  
Jin Li
Keyword(s):  
Fuel Consumption ◽  
Vehicle Emissions ◽  
Oxygen Sensor ◽  
Negative Impact ◽  
Catalytic Converter ◽  
Dynamic Performance ◽  
Stage Iv ◽  
Nox Emission ◽  
Test Results ◽  
Emission Standard

MMT had been used widely as an antiknock additive in petrol. It can enhancing the vehicles dynamic performance and reduces fuel consumption, but causes some negative impact on vehicle emissions. In this paper, the author research on the emission performance of a vehicle which meet Stage IV emission standard use gasoline containing MMT run for 50,000km.The test results show emission pollution such as CO, HC and NOx increased by MMT which result in three-way catalytic converter deterioration quickly. MMT also made the oxygen sensor deterioration and cause high NOx emission.

scholarly journals PENGARUH ARANG KAYU ULIN SEBAGAI CATALYTIC CONVERTER TERHADAP EMISI GAS BUANG DAN KONSUMSI BAHAN BAKAR PADA MESIN TOYOTA KIJANG 5K

JTAM ROTARY ◽  
2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Dias Ahmad Fajri ◽  
Abdul Ghofur
Keyword(s):  
Fuel Consumption ◽  
Chemical Reactions ◽  
Experimental Research ◽  
Catalytic Converter ◽  
Exhaust Emissions ◽  
Hole Diameter ◽  
Catalytic Converters ◽  
Gas Analyzer ◽  
The Media ◽  
Hc Emissions

Catalytic Converter adalah pengubah (modifier) yang menggunakan media yang memiliki katalis, dimana media tersebut diharapkan dapat membantu atau mempercepat proses perubahan zat (reaksi kimia) sehingga gas seperti CO dapat dioksidasi menjadi CO2, media katalis kimia pada suhu tertentu, tanpa perubahan atau penggunaan oleh reaksi itu sendiri. Catalytic converter berbahan arang kayu ulin untuk emisi gas buang dan konsumsi bahan bakar. Jenis penelitian ini adalah penelitian eksperimen. Pengujian yang dilakukan pada penelitian ini ada 2 yaitu knalpot tanpa catalytic converter dan knalpot dengan catalytic converter berbahan arang kayu ulin dengan variasi rpm 1500, 2500, 3500. Pengujian emisi gas buang menggunakan alat yang disebut gas analyzer. Berdasarkan hasil penelitian dapat disimpulkan bahwa catalytic converter berbahan arang kayu ulin dengan diameter lubang 20 mm mampu mereduksi emisi CO dengan reduksi sebesar 52,23%, dan emisi HC lubang berdiameter 20 mm dengan jumlah 85,63. Catalytic Converter is a converter (modifier)that uses media that has a catalyst, where the media is expected to help or accelerate the process of changing substances (chemical reactions) so that gases such as CO can be oxidized to CO2, chemical catalyst media at a certain temperature, without change or use by the reaction itself. Catalytic converters made from ironwood charcoal to exhaust emissions and fuel consumption. This type of research is experimental research. There are 2 tests of this research, namely exhaust without catalytic converter and exhaust with catalytic converter made from ironwood charcoal with variations in rpm 1500, 2500, 3500. Examination of exhaust emissions using a device called a gas analyzer. Based on the results of the study it can be concluded that catalytic converters made from ironwood charcoal with a hole diameter of 20 mm were able to reduce CO emissions with a reduction of 52.23%, and HC emissions of a hole diameter of 20 mm with an amount of 85.63,

Kontribusi Explosive Power Otot Tungkai Terhadap Hasil Lompat Jauh Gaya Jongkok Pada Mahasiswa Putra Prodi Pendidikan Kepelatihan Olahraga Semester II Universitas Riau

2015 ◽  
Vol 2 (2) ◽  
pp. 72
Author(s):  
Slamet ' ◽  
Ali Mandan ◽  
Ardiah Juita ◽  
Ridwan Sinurat
Keyword(s):  
Significant Relationship ◽  
Muscle Power ◽  
Test Results ◽  
Student Sample ◽  
Correlational Research ◽  
Explosive Power ◽  
Normality Test ◽  
Long Jump ◽  
Independent Variable ◽  
Leg Muscle

This study is correlational research that aims to find the contribution of leg muscleexplosive power to yield long jump squat style. The student sample was the son of varsity sportscoaching education Riau semester totaling 42 people. As the independent variable is theexplosive power leg muscle while dependent variable is the result of the long jump jongok style.Data (x) obtained from the test results without the leading long jump (standing board jump) toassess leg muscle explosive power while data (y) obtained from testing the long jump squat styleusing the prefix. Data were analyzed with statistical normality test is a test last lilifors alsoanalyzed the data to look for the correlation coefficient, and then proceed to test "t" after itsought the contribution. From the results of data processing for the normal distribution of dataobtained for the provision of data (x) and abnormally distributed in terms of data (y). r = 0.32,then through the test "t", t_ (count>) ttabel then there is a significant relationship between theexplosive muscle power with the outcome long jump squat style, via analysis of leg muscleexplosive power of determination have contributed 10.24% and 89 , 76% was contributed byother factors.

Pemberian Umpan Balik Dalam Meningkatkan Hasil Belajar dan Minat Belajar Mahasiswa

2015 ◽  
Vol 4 (3) ◽  
Author(s):  
Seruni Seruni ◽  
Nurul Hikmah
Keyword(s):  
Information Technology ◽  
Learning Outcomes ◽  
Test Data ◽  
Random Sampling ◽  
Covariance Matrices ◽  
Test Results ◽  
Immediate Feedback ◽  
Statistics Course ◽  
Independent Variable ◽  
Descriptive Statistical Analysis

<p>The purpose of this study is to find and analyze the effect of feedback on <br />learning outcomes in mathematics and an interest in basic statistics course. The <br />population in this study are affordable Information Technology Student cademic Year 2012/2013 Semester II Indraprasta PGRI University of South Jakarta. Sample The study sample was obtained through random sampling. This study used an experimental method to the analysis using the MANOVA test. This study has three variables, consisting of: one independent variable, namely the provision of feedback (immediate and delayed), and two dependent variable is the result of interest in the study of mathematics and basic statistics course. The data was collected for the test results to learn mathematics, and a questionnaire for the interest in basic statistics course. Collected data were analyzed using the MANOVA test. Before the data were analyzed, first performed descriptive statistical analysis and test data analysis requirements (test data normality and homogeneity of covariance matrices). The results show that the learning outcomes of interest in mathematics and basic statistics course for students who are given immediate feedback higher than students given feedback delayed. <br /><br /></p>

PENGARUH GAYA KEPEMIMPINAN, MOTIVASI KERJA DAN KOMPETENSI TERHADAP KINERJA PEGAWAI PADA DINAS PEMBERDAYAAN MASYARAKAT DAN DESA PROVINSI SUMATERA BARAT

2020 ◽  
Author(s):  
Mafral
Keyword(s):  
Regression Analysis ◽  
Leadership Style ◽  
Work Motivation ◽  
Employee Performance ◽  
High Reliability ◽  
Test Results ◽  
Eligibility Criteria ◽  
Validity Test ◽  
Negative Effect ◽  
Independent Variable

The independent independent variables in this study as many as 89 respondents are determined by using saturated samples. To know the influence of independent variable to dependent variable partially, used t test. While to know the effect of independent variable to dependent variable simultaneously, used F test. The assumption used in the validity test is if R-count&gt; R-table item is declared valid. The R-arithmetic shown in the table above, from each item indicates that R-arithmetic&gt; R- table so the item is declared valid. Based on the validity test of the instrument of Leadership Style, Work Motivation, and Competence on Employee Performance, all items are declared valid and reliability test results indicate that the instrument has high reliability. This means that the eligibility criteria of the Instrument of Leadership Style, Work Motivation, Competency and Employee Performance have met the criteria of good instrument requirements, that is valid and reliable. The result of regression analysis of Leadership Style obtained by tcount = 20,91 while ttable value = 1,988 tcount&gt; ttable proved variable of Leadership Style influence to Employee Performance. Work Motivation regression analysis obtained tcount = 17.62 while the value ttable = 1.988 tcount&gt; ttabel proven Motivational Work variables influence on Employee Performance. Regression analysis Competence obtained value tcount = - 06.85 while ttable =1.988 so thitung&gt; ttable and proven variable Competence have a negative effect on Employee Performance.

Rolls Royce/Allison 501-K Gas Turbine Anti-Fouling Compressor Coatings Evaluation

2002 ◽  
Author(s):  
Daniel E. Caguiat
Keyword(s):  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Turbines ◽  
Performance Degradation ◽  
Specific Fuel Consumption ◽  
Inlet Temperature ◽  
Test Results ◽  
Turbine Inlet ◽  
Compressor Performance ◽  
Compressor Efficiency

The Naval Surface Warfare Center, Carderock Division (NSWCCD) Gas Turbine Emerging Technologies Code 9334 was tasked by NSWCCD Shipboard Energy Office Code 859 to research and evaluate fouling resistant compressor coatings for Rolls Royce Allison 501-K Series gas turbines. The objective of these tests was to investigate the feasibility of reducing the rate of compressor fouling degradation and associated rate of specific fuel consumption (SFC) increase through the application of anti-fouling coatings. Code 9334 conducted a market investigation and selected coatings that best fit the test objective. The coatings selected were Sermalon for compressor stages 1 and 2 and Sermaflow S4000 for the remaining 12 compressor stages. Both coatings are manufactured by Sermatech International, are intended to substantially decrease blade surface roughness, have inert top layers, and contain an anti-corrosive aluminum-ceramic base coat. Sermalon contains a Polytetrafluoroethylene (PTFE) topcoat, a substance similar to Teflon, for added fouling resistance. Tests were conducted at the Philadelphia Land Based Engineering Site (LBES). Testing was first performed on the existing LBES 501-K17 gas turbine, which had a non-coated compressor. The compressor was then replaced by a coated compressor and the test was repeated. The test plan consisted of injecting a known amount of salt solution into the gas turbine inlet while gathering compressor performance degradation and fuel economy data for 0, 500, 1000, and 1250 KW generator load levels. This method facilitated a direct comparison of compressor degradation trends for the coated and non-coated compressors operating with the same turbine section, thereby reducing the number of variables involved. The collected data for turbine inlet, temperature, compressor efficiency, and fuel consumption were plotted as a percentage of the baseline conditions for each compressor. The results of each plot show a decrease in the rates of compressor degradation and SFC increase for the coated compressor compared to the non-coated compressor. Overall test results show that it is feasible to utilize anti-fouling compressor coatings to reduce the rate of specific fuel consumption increase associated with compressor performance degradation.

scholarly journals Pengaruh Likuiditas, Leverage, Aktivitas, dan Profitabilitas terhadap Nilai Perusahaan pada Sektor Barang Konsumsi yang Terdaftar Di Bursa Efek Indonesia Periode 2015-2018

2020 ◽  
Vol 20 (3) ◽  
pp. 919
Author(s):  
Anju Galingging ◽  
Fery Xaverius Aritonang ◽  
Herlina Novita
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Consumer Goods ◽  
Firm Value ◽  
Research Method ◽  
Quantitative Method ◽  
Stock Exchange ◽  
Test Results ◽  
Activity Variable ◽  
Independent Variable

The purpose of this study is to determine and analyze the effect of Liquidity, Leverage, Activity, and Profitability on Firm Value in the Consumer Goods Sector Listed on the Indonesia Stock Exchange for the period 2015-2018. This study uses a quantitative method with a desciptive type. The population of this study is the Consumer Goods Sector that is listed on the Indonesia Stock Exchange for the 2015-2018 period, as many as 50 companies. Sampling using purposive sampling and obtained a research sample of 60 samples from 15 sectors of consumer goods multiplied by 4 years. This research method uses multiple linear regression. The coefficient test results obtained from the Adjusted R Square value are 3.7%, which means that the variation in the Firm Value variable described by the independent variable is 96.3%. The research results simultaneously show that liquidity, leverage, activity, and profitability have no effect on firm value. Meanwhile, partially it shows that liquidity, leverage, and profitability have no and insignificant effect on firm value, but for the activity variable has a significant effect on firm value.

scholarly journals The Influence Of Climate Leadership, Organizational Behavior And Discipline Work Against The Performance Of Members Of The Police Of The Republic Of Indonesia Sabhara Units Of The Resort City Of Padang

2020 ◽  
Author(s):  
Anton Kusuma Jaya
Keyword(s):  
Organizational Behavior ◽  
Organizational Climate ◽  
Leadership Behavior ◽  
High Reliability ◽  
Descriptive Analysis ◽  
Test Results ◽  
Know How ◽  
Dependent Variables ◽  
Independent Variable ◽  
The Republic

The purpose of this research was: 1) to explain whether there was a Climate of leadership, Organizational Behavior Disciplines Work on performance of Member unit of the police of the Republic of Indonesia Sabhara Resort City of Padang and 2) measure the magnitude of the influence of Climate leadership, Organizational Behavior Disciplines Work on performance of Member unit of the police of the Republic of Indonesia Sabhara Resort City of Padang.This research was conducted in February-March 2016 in Sabhara units of the police force of the Republic Indonesia's resort city of Padang.The sample used in this study as many as 32 respondents using a sampling of saturated. As for the independent variable of climate leadership, Organizational Behavior Disciplines work, whereas the variable dependennya is the performance of members of the police. This research is explanatory research.The method of data collection is the kuestioner. Data analysis techniques using Descriptive Analysis and Inferensial Analysis.To know how the variables are independent of the dependent variable are partial, used test t. Whereas to know the influence of the variables are independent of the dependent variables simultaneously, use the test F. Assumptions used in the test of validity is if R-female &gt; R-table item is declared valid. R-count shown in the table above, from individual items suggests that R-female &gt; R-table so that the items are declared valid.Based on a test of the validity of the instrument of climate leadership, Organizational Behavior and discipline Work against Performance known to all items stated valid and reliability test results show that the instruments have a high reliability and meets the criteria of a good instrument requirements, i.e., valid and reliability.Free Leadership Behavior variables (X 1) effect significantly to performance (Y), Organizational Climate (X 2) a significant effect on performance, variable (Y) Discipline work (X 3) a significant effect on performance (Y). Hypothesis (H1) until the Union (H3) third.

scholarly journals Pengaruh Sistem Informasi Akuntansi (Komputerisasi Kegiatan Pertanahan) Terhadap Pencatatan Penerimaan Negara Bukan Pajak Pada Kantor Pertanahan Kabupaten Bengkalis

2019 ◽  
Vol 3 (1) ◽  
pp. 20-36
Author(s):  
Dewi Angraini ◽  
Decky Hendarsyah
Keyword(s):  
Information System ◽  
Government Regulation ◽  
Accounting Information ◽  
Test Results ◽  
Accounting Information System ◽  
Accounting Information Systems ◽  
State Revenue ◽  
Tax State ◽  
Independent Variable ◽  
Permanent Employees

This study was conducted to determine the effect of Accounting Information Systems (Computerization of Land Activities) on the Registration of Records of Non-Tax State Revenues according to Government Regulation Number 128 of 2015. This research was conducted at the Land Office of Bengkalis Regency. Data collection was done by giving questionnaires as much as 30 copies, which were distributed to respondents who are civil servants and non-permanent employees at the Bengkalis land office using Purposive Sampling. The data obtained were then analyzed using SPSS version 23.0. The test results show that the Accounting Information System (computerization of land activities) has a positive and significant effect on the recording of non-tax state revenue at the Bengkalis Regency land office. The contribution of the independent variable to the dependent variable is 25.3% while the rest 74.7% is influenced by other variables.

scholarly journals DUKUNGAN KELUARGA DENGAN KEMANDIRIAN ORANG DENGAN GANGGUAN JIWA (ODGJ)

2018 ◽  
Vol 8 (2) ◽  
pp. 3-7
Author(s):  
Khamida Khamida ◽  
Abdul Muhith ◽  
Rizkya Dewi Safitri
Keyword(s):  
Mental Disorders ◽  
Family Support ◽  
Test Results ◽  
Cross Sectional ◽  
Good Family ◽  
The Family ◽  
Independent Variable ◽  
Spearman Test ◽  
The Relationship ◽  
Good Support

Some families who treat people with mental disorders have fully support their family member, but people with mental disorders do not care about it. ODGJ (People with Mental Disorder) prefer to do what they want to do unless there is an award from the family. The aim of the study is to find out the relationship between family support and the level of independence of ODGJ in Posyandu Jiwa, Wonokromo Village, Surabaya. The design of this study is analytical with a cross sectional approach. The population is all ODGJ families. The sample is 35 respondents with Purposive Sampling techniques. The independent variable is family support and the dependent variable is the level of independence of ODGJ. The research instrument used a questionnaire. Data analysis using Rank Spearman test. The results showed that of the 35 respondents most (62.9%) had good family support and most (65.7%) were independent. The test results of Rank Spearman statistics p = 0.000 <α = 0.05 indicate that there is a family support relationship with the level of independence of ODGJ. The independence of ODGJ can be achieved to the maximum with good support from the family. It is expected that families can maintain good family support for ODGJ to be more independent and maintain ODGJ's independence, so as not to depend on family

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