scholarly journals PENINGKATAN SIFAT MEKANIS BESI COR KELABU MELALUI PROSES TEMPERING

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
A. Noor Setyo HD ◽  
Sri Widodo
Keyword(s):  
Cold Water ◽  
Hardness Test ◽  
Heating Time ◽  
Initial Energy ◽  
Test Results ◽  
Maximum Hardness ◽  
Quenching Temperature ◽  
Independent Variables ◽  
Hardness Tester ◽  
Water Media

This study aims to determine the Hardness and Toughness of cast iron after undergoing a Tempering process with independent variables heating time and dependent Hardness, microstructure and toughness Impack. Quenching was carried out at temperatures of 7750C, 8000C and 8250C in cold water media, while Tempering was carried out at temperatures of 2000C, 3000C and 4000C with a holding time of 15 minutes. Vickers Hardness test results using "Micro Hardness Tester" after Quenching have increased by an average of 95.6% at Quenching 7750C, 99.8% at Quenching 8000C and 107.1% at Quenching temperature 8250C from Hardness value of row material of 256.6 BHN or 260.8 VHN0,040. The maximum hardness value is obtained 531.4 BHN or 553.6 VHN 0,040 at Quenching temperature 8250C and the lowest Hardness of 501.8 BHN or 541,8 VHN0,040 at Quenching 7750C temperature, has Cementite phase as a matrix with little Martensite, is due to treatment The partial tempering of Martensite is replaced by the ferrite phase between Cementites. The results of the study concluded that at Tempering temperatures of 2000C, 3000C and 4000C, the toughness of FC 30 experienced an increase of 106.5%, 121.9% and 130.5% from the initial energy of 5.21 Joule / mm2, whereas violence decreased by 88, 6%, 80.8% and 40.4% of the original Hardness of 260.8 VHN 0,040

scholarly journals FAKTOR-FAKTOR YANG MEMPENGARUHI KEPATUHAN PELAPORAN WAJIB PAJAK ORANG PRIBADI

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Neni Marlina Br Purba ◽  
Dian Efriyenty
Keyword(s):  
Random Sampling ◽  
Descriptive Analysis ◽  
Sampling Technique ◽  
Simple Random Sampling ◽  
Test Results ◽  
Analysis Techniques ◽  
Independent Variables ◽  
The Government ◽  
Tax Payments ◽  
Tax Reporting

Tax reporting is the responsibility of taxpayers after making tax payments. The mismatch between the number of registered taxpayers and the number of taxpayers who report taxes is a separate problem for the government in managing the tax results received. Where the number who report taxes is very small compared to the number of registered taxpayers. Based on these problems, the purpose of this study is to determine the factors that influence individual taxpayer reporting compliance. The population used by all individual taxpayers who are registered at KPP Pratama Batam Selatan. While the sample was taken through simple random sampling technique with the Slovin formula so that the sample used was 100 respondents. Data analysis techniques are data instrument test, classical assumptions, descriptive analysis and hypothesis testing with the help of SPSS. The results obtained, partially the application of e-filling and tax sanctions has a significant effect on tax reporting compliance while tax awareness and understanding have no significant effect. The f test results show that all the independent variables simultaneously have a significant effect on the dependent variable.

scholarly journals The Effect of Obstetric Complications (Premature Rupture of Membrans, Pre Eclampsia and Post Date) on the Type of Labor in Mojokasri Hospital

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Sugiati Sugiati ◽  
Nurwijayanti Nurwijayanti ◽  
Nurdina Nurdina
Keyword(s):  
Statistical Test ◽  
Obstetric Complications ◽  
Sectio Caesarea ◽  
P Value ◽  
Test Results ◽  
Premature Rupture ◽  
Independent Variables ◽  
Regression Test ◽  
Logistic Regression Test ◽  
Comparative Population

Obstetric complications are complications that occur during the pregnancy process or complications that can occur after the mother gives birth, for example, KPD, Bleeding, Abortion, post date, Preeclampsia and Eclampsia and others that can cause risks to the mother and fetus that will affect labor (. The purpose of this study was to determine the effect of obstetric complications (KPD, Pre-eclampsia and Post Date) on the type of labor in Mojokasri Kawaananan, Mojokerto Regency in 2018. The design used in the study is Comparative. Population were all maternal obstetric complications (KPD, Pre Eklampsi, Post Date) in Mojokasri Hospital in June to August 2018 with a total of 186 people. The sample size is 126 respondents, using the simple random technique. Independent variables are Obstetric Complications (KPD, PEB and Post Date) the dependent variable is Type of Labor (Normal, Action, Sectio Caesarea). Data was collected using observation sheets, then analyzed using the Logistic Regression test. Statistical test results obtained from Kebidanan Complications obtained p value of 0,000 <α = 0.05, so that H0 is rejected and H1 is accepted. This means that the variable midwifery complication affects the type of labor Actions / sectio caesarea in Kawedanan Mojokasri, Mojokerto Regency

scholarly journals PENGARUH DEFERENSIASI PRODUK PROMOSI DAN HARGA TERHADAP KEPUTUSAN PEMBELIAN PRODUK FASHION PADA UD. SINAR MULIA DI KABUPATEN GIANYAR

2020 ◽  
pp. 190
Author(s):  
I Komang Sumerta ◽  
Desak Nyoman Tri Indahyani ◽  
Ni Komang Redianingsih ◽  
I Made Baji Pranawa
Keyword(s):  
Product Differentiation ◽  
Sampling Technique ◽  
Test Results ◽  
Purchasing Decisions ◽  
Consumer Decisions ◽  
Independent Variables ◽  
The Past ◽  
Fashion Products ◽  
Analysis Technique ◽  
Data Collection Technique

Consumer purchasing decisions is the occurrence of sales fluctuations in the past four years. Product differentiation, promotion, and price are factors that have been pursued by the company but have not been able to provide a maximum contribution to consumer decisions. The purpose of this study was to determine the effect of product differentiation, promotion, and price on fashion product purchasing decisions. The sample was determined by purposive random sampling technique, with 105 respondents. The data collection technique used was a questionnaire (questionnaire). The analysis technique used the SPSS version 22. The results showed there was an effect of product differentiation, promotion, and price simultaneously on the decision to purchase fashion products. Based on the partial test results it can be seen that product differentiation, promotions, and prices have a positive and significant effect on purchasing decisions for fashion products. The conclusion from this research is the higher product differentiation, promotion, and price, the decision to buy products fashion will increase. Suggestions for further researchers is to be able to conduct research on different subjects and by developing other independent variables.

PENGARUH KARAKTERISTIK PEMERINTAHAN TERHADAP AUDIT DELAY LAPORAN KEUANGAN PEMERINTAH DAERAH

2015 ◽  
Vol 11 (2) ◽  
pp. 89
Author(s):  
Baldric Siregar
Keyword(s):  
Regression Analysis ◽  
Financial Statements ◽  
Test Results ◽  
Size Of Government ◽  
Financial Reports ◽  
Financial Report ◽  
Independent Variables ◽  
Central Java ◽  
Sample Data ◽  
Special Region

Financial statements that were not provided on time may cause those report loses their capacity toinfluence decisions. This study aimed to examine the effects of local government characteristics onaudit delay of government financial reports of Yogyakarta Special Region and Central Java. Thisstudy uses 40 districs and cities as the study sample. Data were obtained from the Supreme AuditAgency and the Central Bureau of Statistics. The dependent variable of this research is audit delay.While the independent variables include the size of government, the value of the budget, and leverage.Multiple regression analysis was used to test the hypothesis. The test results showed that the size ofgovernment and the level of leverage negatively affect audit delay. Budgets value does notsignificantly affect audit delay.Keywords: audit delay, financial report, governmental size, budget value, and leverage

scholarly journals Research on Lifespan Prediction of Cross-Linked Polyethylene Material for XLPE Cables

2020 ◽  
Vol 10 (15) ◽  
pp. 5381
Author(s):  
Yi Zhang ◽  
Zaijun Wu ◽  
Cheng Qian ◽  
Xiao Tan ◽  
Jinggang Yang ◽  
...  
Keyword(s):  
Operating Time ◽  
Prediction Method ◽  
Hardness Test ◽  
High Accuracy ◽  
Future Research ◽  
Test Results ◽  
Scanning Calorimetry ◽  
Characterization Methods ◽  
Gel Content ◽  
Mechanical And Electrical Properties

In this paper, cross-linked polyethylene (XLPE) cables of the same batch from Factory A, which ran from 1 to 8 years in Jiangsu Province, are sampled. Some widely accepted aging characterization methods of XLPE cables such as the gel content test, differential scanning calorimetry (DSC) test, tensile test and hardness test are employed to obtain the physicochemical, mechanical and electrical properties of the samples. Then, some lifespan prediction parameters significantly correlated with operating time are obtained through correlation calculations. Finally, a prediction method is proposed to predict the operating time of XLPE cables from Factory A. The test results indicate that parameters including the gel content Cge, the crystallinity XC, tensile strength σ, ultimate elongation δ, the dielectric permittivity ε, and the dielectric loss Jtan are significantly correlated with operating time, which can be used in evaluating the aging degree of XLPE cables. Moreover, due to the high accuracy of the experimental verification, it turns out that the lifespan prediction method proposed in this paper can be used to determine the operating time of XLPE cables from Factory A in future research.

scholarly journals Why do Customers Intend to Repurchase Transportation Online in Indonesia?

2019 ◽  
Vol 125 ◽  
pp. 23010
Author(s):  
Sabar Sutia ◽  
Shultonnyck Adha ◽  
Mochammad Fahlevi
Keyword(s):  
Customer Satisfaction ◽  
Sampling Technique ◽  
Online Marketing ◽  
Brand Awareness ◽  
Decision Variable ◽  
Municipal Services ◽  
Test Results ◽  
Urban Mobility ◽  
Independent Variables ◽  
Busy Road

The rapid population growth of Jakarta to further improve urban mobility problems. The imbalance between public infrastructures provided by the number of people who need it led to a lack of municipal services. Transportation Online has become one transportation solutions, present in transportation needs cheap, efficient, and fast. Even amid the busy road, using motor transportation would be faster. This study aims to develop a model that connects between the independent variables namely; Online Marketing (X1), Brand Awareness (X2) with the dependent variable is the Decision of Repurchase (Y2) and Customer Satisfaction (Y1). This research was conducted in East Jakarta. The research method used was surveyed. The population in this study is the user Transportation Online East Jakarta area. The sampling technique used in this study is incidental sampling. These results indicate that the two independent variables, namely Marketing Online (X1) and Brand Awareness (X2) effect on Repurchase Decision variable (Y2) and Customer Satisfaction (Y1). From the test results simultaneously obtained that Online Marketing and Brand Awareness jointly influence decisions repurchase mediated by customer satisfaction Transportation Online service users, means the better online marketing and brand awareness of the company, the higher the repurchase decisions and customer satisfaction.

scholarly journals FORMULATION A CIPROFLOXACIN HYDROCHLORIDE EXTENDED-RELEASE TABLET WITH COMBINATION OF HYDROXYPROPYL METHYLCELLULOSE (HPMC) K100M AND HYDROXYPROPYL METHYLCELLULOSE (HPMC) K4M BY DIRECT COMPRESSION METHOD

2019 ◽  
pp. 25-30
Author(s):  
RESMI MUSTARICHIE ◽  
DOLIH GOZALI ◽  
YEDI HERDIANA
Keyword(s):  
Statistical Analysis ◽  
Extended Release ◽  
Hydroxypropyl Methylcellulose ◽  
Hardness Test ◽  
Dissolution Test ◽  
Test Results ◽  
Ciprofloxacin Hydrochloride ◽  
Uniformity Test ◽  
Size Uniformity ◽  
Release Tablet

Objective: Ciprofloxacin hydrochloride tablets which are not extended-release will produce non-constant drug levels in the blood. This study aimed to overcome this problem by making ciprofloxacin hydrochloride extended-release tablets with a combination of hydroxypropyl methylcellulose (HPMC) K100M and hydroxypropyl methylcellulose (HPMC) K4M by a direct compression method. Methods: The method in this study consisted of preformulation, formula design, manufacture of ciprofloxacin hydrochloride tablets, tablet print mass testing, IPC (In-Process Control) slow-release tablet mass print, IPC (In-Process Control) quality of slow-release tablet preparation, dissolution test, and statistical analysis. Preformulation was carried out aiming to determine the physical and chemical properties of active-excipient substances based on a certificate of analysis. This was done using a Fourier Transform Infrared (FT-IR) and UV-Vis spectrophotometer. Five kinds of ciprofloxacin hydrochloride tablet formulations were made using the direct pressing method with variations in the concentration of HPMC K100M and HPMC K4M. The ratio of percentage of HPMC K100M and HPMC K4M were F1 0,5%: 1%, F2 1%: 0,5%, F3 0,75%: 0,75%, F4 1%: 0%, F5 0%: 3%. Evaluation of tablet preparations (IPC control) included weight uniformity test, size uniformity test, hardness test, and friability test. The dissolution test was carried out for 2 h by hydrochloride acid 0,1 N pH 1.2 as (pH of gastric acid). Statistical analysis using Perfect Block Random Design (PBRD) method and further testing using the Newman-Keuls test was applied for the data obtained. Results: The test results with FTIR showed that ciprofloxacin hydrochloride used compared to ciprofloxacin hydrochloride BPFI is equivalent and has a purity index of 0.992739. Determination of the level of the active ingredient ciprofloxacin hydrochloride was carried out by measuring the absorbance of a 5 ppm sample solution at a wavelength of 276 nm. The percentage of absorbance of the solution is then calculated and the result obtained is 98.87%. The range of levels that have been set is 98%-102%. These test results were under those listed on the certificate of analysis. The results of the IPC test in the form of weight uniformity test, size uniformity test, hardness test, friability test, and uniformity of ciprofloxacin hydrochloride levels in the preparation, showed all data obtained fulfilling the requirements set by USP 36 convention (2013). The result from dissolution tablet test on 30, 60, and 120 min showed the release of active substance on F1 56.00 %, 67.76 %, and 87.57 %. F2 were 53.42 %, 65.16 %, and 91.44 %. F3 were 59.18 %, 72.15 %, and 91.20 %. F4 were 50.51 %, 70.70 %, and 95.29 %. F5 were 53.75 %, 69.55 %, and 92.05 %. Statistical analysis was applied for the data obtained. Dissolution results illustrated the level of active substances dissolved in the dissolution medium for 2 h or in other words the dissolution test results indicated the number of active substances from tablets that were released and enter the digestive tract and came in contact with body fluids. Conclusion: The dissolution test results as a basis of extended-release tablets showed all of the formulae met dissolution requirements of the United States Pharmacopeia (USP) 36 convention.

Analysis on the Reasons of 500kV High-Voltage Disconnectors Hoop Fracture

2014 ◽  
Vol 915-916 ◽  
pp. 992-995
Author(s):  
Shuang Liu ◽  
Wei Tan Cui ◽  
Hong Wu Zhang ◽  
Yong Quan Ma
Keyword(s):  
Mechanical Properties ◽  
High Voltage ◽  
Chemical Elements ◽  
Testing Machine ◽  
Optical Microscope ◽  
Test Results ◽  
Tightening Force ◽  
Hardness Tester ◽  
Universal Testing ◽  
Fracture Appearance

The fracture reasons of 500kV high-voltage disconnectors hoops were analyzed. The fracture appearance, composition of chemical elements, metallographic, mechanical properties of the fractured hoops were investigated by ICP-AES, SEM, optical microscope, brinell hardness tester, universal testing machine. The test results that one reason is substandard products of this batch hoop. The composition of chemical elements and mechanical properties is fails to comply with applicable standards prescribed and the casting defects are found. Another reason is that the large pre-tightening force and tightens reverse order.

Preparation of Al2O3/Al-Si Composites by In Situ Reaction of Fe2O3+MnO2/Al System

2015 ◽  
Vol 816 ◽  
pp. 48-53
Author(s):  
Jing Zhang ◽  
Hua Shun Yu ◽  
Xin Ting Shuai ◽  
Hong Mei Chen ◽  
Guang Hui Min
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Electron Probe ◽  
Room Temperature ◽  
Manganese Content ◽  
Hardness Test ◽  
Test Results ◽  
Electron Probe Micro Analyzer ◽  
Transmission Electron ◽  
Polygonal Shape

Al2O3 particles reinforced ZL109 composites were prepared by in-situ reaction between Fe2O3+MnO2 and Al in this paper. The influence of ratio of Mn to Fe on the morphologies of Al-Si-Mn-Fe phase and mechanical properties of the composites was investigated. The microstructure was studied by electron probe micro-analyzer (EPMA) and transmission electron microscopy (TEM). The results show that the Al2O3 particles displaced by the Fe2O3+MnO2/Al system are in nanosize. The acicular Al-Si-Fe phases change from acicular to polygonal shape and become smaller with the increase manganese content. The hardness test results have no big difference on the composites. However, the ultimate tensile strength at room temperature and 350°C enhance evidently with the increasing of Mn/Fe.

Preparation and Study of Cr-Nanodiamond Composite Co-Deposition

2011 ◽  
Vol 314-316 ◽  
pp. 160-164 ◽  
Author(s):  
En Zhong Li ◽  
Jiang Cun Li ◽  
Da Xiang Yang ◽  
Wei Ling Guo
Keyword(s):  
Composite Coating ◽  
Test Results ◽  
Maximum Hardness ◽  
Composite Plating ◽  
Plating Layer

The preparation of electrolyte and the technical flow were summarized, the chromium based nanodiamond composite coating was prepared by composite plating process. The metallography structure of plating layer was characterzied, and the hardness, the element of plating layer were tested, the test results and reaction principle were discussed. It was found that the addition of nanodiamond increased the hardness of the coatings. When the concentration of DND in electrolyte is 2.0-3.0g/L,the plating time is about 15-20min, the maximum hardness was obtained.

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