Blends of Nitrile Butadiene Rubber/poly (Vinyl Chloride): the Use of Maleated Anhydride Castor Oil Based Plasticizer

Recently, much attention has been focused on research to replace petroleum-based plasticizers, with biodegradable materials, such as biopolymer which offers competitive mechanical properties. In this study, castor oil was modified with maleic anhydride (MAH) to produce bioplasticizer named maleated anhydride castor oil (MACO), and used in nitrile butadiene rubber (NBR)/poly vinyl chloride (PVC) blend. The effect of MACO on its cure characteristics and mechanical properties of NBR/PVC blend has been determined. The reactions were carried out at different castor oil (CO)/xylene ratios, i.e. 1:0 and 1:1 by weight, and fixed CO/MAH ratio, 1:3 by mole. DOP, CO, and MACO were added into each NBR/PVC blend according to the formula. It was found that the viscosity and safe process level of NBR/PVC blend is similar from all plasticizer, however, MACO (1:0) showed the highest cure rate index (CRI). MACO-based plasticizer gave a higher value of the mechanical properties of the NBR/PVC blend as compared to DOP based plasticizer. MACO (1:1) based plasticizer showed a rather significance performance compared to another type of plasticizers both before and after aging. The value of hardness, elongation at break, tensile strength, and tear strength were 96 Shore A, 155.91 %, 19.15 MPa, and 74.47 MPa, respectively. From this result, NBR/PVC blends based on MACO plasticizer can potentially replace the DOP, and therefore, making the rubber blends eco-friendly

Pengaruh Struktur Modal Terhadap Nilai Perusahaan (Studi Pada Sektor Pertambangan Yang Terdaftar Di Bei Periode 2009-2012)

This study aims to describe the influence of capital structure to the firm value. Applying quantitative research, this study used secondary data taken from companies\u27 financial statements. The sampling technique applied was purposive sampling method. The population were mining companies listed in Indonesia Stock Exchange in the period of 2009-2012. In analyzing the data, this study applied classical assumption test and multiple linier regression. The indicators for the capital structure were Debt to Asset Ratio (DAR) and Debt to Equity Ratio (DER), while the indicator for Firm Value was Tobin\u27s Q. The findings showed that there was a significant effect of the independent variables of DAR and DER simultaneously. Partially, DAR was significantly affected by Tobin\u27s Q while DER was not influenced by the dependent variable

Pengembangan Perangkat Pembelajaran Science Berorientasi Cultural Deviance Solution Berbasis Inkuiri Menggunakan Ict Untuk Mengembangkan Karakter Peserta Didik

Tujuan penelitian ini ialah menghasilkan perangkat pembelajaran yang mampu berperan serta dalam memberikan solusi terhadap salah satu isu global yaitu cultural deviance melalui penumbuhkembangan kembali nilai ideologi pancasila pada peserta didik. Hasil validasi diperoleh hasil bahwa perangkat sudah layak digunakan meskipun ada perbaikan namun bukan mencangkup konsep. Pada kegiatan simulasi RPP, seluruh rencana kegiatan terlaksana dengan baik. Hasil uji keterbacaan dan validasi instrumen tes menunjukan ada beberapa kata yang perlu direvisi dan dari 8 soal yang direncanakan hanya 5 soal yang teruji valid. Perangkat pembelajaran science berorientasi cultural deviation solution berbasis inkuiri menggunakan ICT untuk mengembangkan karakter peserta didik memberikan peluang yang besar untuk menumbuh kembangkan nilai tersebut. The purpose of this study is to produce a device capable of learning to participate in finding solutions to one global issue that is cultural deviance through return values of Pancasila ideology on the learner. Results obtained results validate that the device is suitable to be used even though there is improvement but instead covers the concept. In the simulation activity lesson plans, all plans come to fruition activities. Readability test results and instrument validation tests show there are some words that need to be revised and planned from 8 questions only about 5 proven valid. Device-oriented science teaching inquiry-based cultural deviation solution using ICT to develop the character of students presents a great opportunity to cultivate these values

Keberlanjutan Nilai-nilai Tri Hita Karana (Thk) pada Sistem Subak di Kawasan Wisata dan Kawasan Agraris Kabupaten Gianyar

Subak is one of cultural traditional heritage in Bali which need maintained properly and suistainably. This institution is Balinese wall to protect the culture from outside world. In order to maintain THK suistainability, the research carried out at two different areas, tourism at Subak Juwuk Manis and agriculture at Subak Temesi. Invers Matrix Analysis is used to observe the level of THK suistainability, while Fuzzy Set Theory is used to rank each matrix cell component. The level of suistainability determined by the level of solidity based on its transferability. The study found that the tourism visit, in both tourism and agricultural areas, has no negative impact on the suistainability of THK values, with good categories, 85.52% for Subak Juwuk Manis and 78.83% for Subak Temesi. There is also a variation of dominant matrix component in each cell of THK sub-systems. It is suggested that the rank of each THK matrix component has to be paid attention. Moreover, the intensity of guiding should be started from the least dominant to the most dominant cell of matrix

Pengaruh Pertumbuhan Perusahaan, Profitabilitas, Likuiditas, dan Struktur Aktiva terhadap Leverage Keuangan Perusahaan Subsector Textile And Garment di Bei

Debt as external financial source could act as leverage for earning per share (EPS) of company. The purpose of this study is to understand the influence of company\u27s growth, profitability, liquidity, and tangibility of asset to financial leverage of companies that listed in subsector textile and garment in BEI for period 2006-2013, after the abolition of quotas and the reduction of tariff duties among the contracting nations based on General Agreement on Tariffs and Trade (GATT). The population and also as the total sample in this study is 11 companies. Technical analysis using SPSS multiple analysis regression programe. The results shows that profitability has negative significant influence to financial leverage and tangibility of asset has positif significant influence to financial leverage of subsector textile and garment companies. Meanwhile, company\u27s growth and liquidity has no significant influence to financial leverage of subsector textile and garment companies

Pengaruh Likuiditas dan Aktivitas terhadap Profitabilitas pada PT Pln (Persero)

Penelitian ini bertujuan untuk menguji pengaruh likuiditas dan aktivitas terhadap profitabilitas pada PT PLN (Persero). Jumlah sampel adalah sebanyak 32 laporan triwulanan dari tahun 2006 sampai dengan 2013, dengan metode penentuan sampling jenuh. Metode pengumpulan data dalam penelitian ini dilakukan dengan wawancara, dan observasi non partisipasi. Dalam penelitian ini teknik analisis yang digunakan adaalah analisis regresi linier berganda. Berdasarkan hasil analisis ditemukan bahwa likuiditas yang diwakili oleh current ratio memiliki pengaruh yang tidak signifikan terhadap profitabilitas, begitu pula aktivitas yang diwakili oleh total asset turnover ratio dan working capital turnover ratio berpengaruh tidak signifikan terhadap profitabilitas Perusahaan

Pengaruh Size, Likuiditas, Risiko Kredit dan Rentabilitas terhadap Rasio Kecukupan Modal

Industri BPR yang sehat diperlukan dalam rangka menciptakan stabilitas sistem keuangan, dan mendorong pertumbuhan ekonomi nasional. Penelitian ini bertujuan untuk mengetahui pengaruh Size/ukuran bank, Loan to Deposit Ratio (LDR), Non Performing Loan (NPL) dan Net Interest Margin (NIM) terhadap Capital Adequacy Ratio (CAR). Penelitian ini dilakukan pada BPR di Provinsi Bali periode 2015-2016. Teknik pengambilan sampel menggunakan metode sensus yang berjumlah 137 BPR dengan teknik analisis data regresi linier berganda. Berdasarkan hasil analisis menunjukkan bahwa Size/ukuran bank berpengaruh negatif signifikan terhadap CAR. Hal ini menunjukkan bahwa semakin tinggi total asset suatu bank maka bobot risiko semakin tinggi dan kecukupan modalnya akan menurun.  LDR dan NIM berpengaruh positif signifikan terhadap CAR. Hal ini menunjukkan bahwa semakin tinggi LDR dan NIM maka kecukupan modal akan meningkat. NPL berpengaruh negatif signifikan terhadap CAR. Hal ini menunjukkan bahwa semakin tinggi NPL maka kecukupan modal bank akan menurun. Kata kunci: CAR, SIZE, LDR, NPL, NI

The Effect of Communicative Language Teaching on Students' Speaking Skill

The aims of this research were to find out whether there are good response and improvement of students' speaking skill between before and after being taught through Communicative Language Teaching (CLT). The samples of this research were the VIII A and VIII B class of the Eighth Grade of SMP Negeri 21 Tangerang in academic year 2015/2016. The researcher used non-equivalent control group design. The instrument was oral test. The result of the research showed that there was improvement of the students' speaking skill in actively communicative by using CLT. The result of t-test showed that t was bigger than ttable. The result of tcount was 4.2105 and ttable was 2.0021. It means that the researcher's hypothesis (H1), there is significant difference of post-test scores between experiment class and control class is accepted. The average score of pre-test in experiment class is 67.33 while the average score of pre-test in control class is 66.50. The average of the post-test score in experiment class was 83.00 while the average of the post-test score in control class was 75.00. It showed that CLT can improve the students' speaking skill

Factors Associated with Nutritional Status of Adolescents Age 12-15 Years in Indonesia (Secondary Data Analysis of RISKESDAS 2007)

Adolescent prone to nutritional problems because it is a period of transition from childhood to adulthood marked by changes in physical, physiological, and psychosocial. They have based Household Health Survey (Household) in 2004 the prevalence of more nutritional status according to BMI percentile at age 12-15 years by 8.6%, and malnutrition of 10.3%. The purpose of this research is knowing the relationship between adolescents sociodemographic factors, nutrient intake, fruit and vegetable consumption habits, exercise behavior, smoking behavior, and nutritional status were the predictors for this study. This cross-sectional study used secondary data from Riskesdas 2007. The population was all of the households representing 33 provinces in Indonesia, and the sample was 53837 household member aged 12-15 year. Study results showed that 9.2% of adolescents experience more nutrition and 90.8%, not more food. The effect of the statistical test showed that there is an association between gender, education, protein intake, smoking behavior, exercise behavior, and nutritional parents’ nutritional status with adolescents’ status age 12-15 years. The author recommends it is providinginformation about the nutritious balanced among others by eating a varied diet, not smoking, physical activity and weight monitoring. Keywords: Nutritional status; youth; characteristic; cross-sectional; Indonesi