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Pengaruh Kosentrasi Zeolit Terhadap Kualitas Bio-Oil Yang Diproduksi dari Limbah Sabut Kelapa Muda (Cocos nucifera) Menggunakan Metode Piro-katalitik : (Effect of Zeolite Concentration on the Quality of Bio-fuel Produced from Coconut Fiber (Cocos nucifera) Using the Piro-catalytic Method) Jahiding, M.; Usman, Ida; Ratih Samsusih Rizki; Haryani; Mashuni
Gravitasi Vol. 19 No. 2 (2020)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v19i2.15359

Abstract

Cadangan energi di Indonesia terutama energi fosil (minyak bumi, batubara) semakin menipis. Oleh karena itu diperlukan usaha penghematan dan pengembangan sumber energi arternatif. Salah satu cara yaitu dengan mengkonversi limbah sabut kelapa muda (Cocos nucifera) menjadi bio-fuel. Penelitian ini dilakukan menggunakan metode piro-katalitik pada temperature 600 ⁰C. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh konsentrasi zeolit (3%, 5%, 7%) terhadap kualitas bio-fuel. Uji kualitas BBM meliputi viskositas, densitas, specific gravity, API gravity, nilai kalor dan analisis GC-MS. Hasil penelitian menunjukkan bahwa konsentrasi katalis zeolit berpengaruh pada kualitas bio-fuel. Nilai kalor yang dihasilkan untuk setiap kosentrasi katalis 3%, 5%, 7% berturut-turut adalah 10.412 kkal/kg; 10.421 kkal/kg; dan 10.417 kkal/kg. Analisis komposisi kandungan bahan bakar dalam bio-fuel menggunakan GC-MS diperoleh senyawa acetid acid, phenol, furfural, pyridine, creosol, benzene, ethanol dan aseton dengan persentase bahan bakar mencapai 73,46%, sehingga bio-fuel dari limbah sabut kelapa muda (Cocos nucifera) dapat digunakan sebagai sumber energi.
PENGARUH KECERDASAN INTELEKTUAL, BUDAYA ORGANISASI DAN FASILITAS KERJA TERHADAP KINERJA GURU SMA NEGERI 5 PURWOKERTO Haryani; Cahyaningtyas R.U
Majalah Imiah Manajemen & Bisnis Vol 14 No 2 (2017): Majalah Ilmiah Manajemen & Bisnis
Publisher : FEB UNWIKU PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.273 KB)

Abstract

This research entitled "The Influence of Intellectual Intelligence, Organizational Culture and Work Facilities on Teacher Performance of SMA 5 Purwokerto". The purpose of this research was to analyze the effect of intellectual intelligence on the performance of teachers at Purwokerto Public High School 5, to analyze the influence of organizational culture on the performance of teachers at SMA 5 Purwokerto and to analyze the influence of work facilities on the performance of teachers at SMA 5 Purwokerto. The analysis uses multiple linear regression. From this research it can be concluded: The hypothesis that intellectual intelligence has a effect on the performance of teachers at SMA 5 Purwokerto, with a confidence rate of 95%, is accepted. This is evidenced by the t test which proves that the t count of intellectual intelligence is greater than t table (2,217> 2,0262). The hypothesis that organizational culture has a effect on the performance of teachers at SMA 5 Purwokerto, with a 95% confidence score, is accepted. This is evidenced by the t test which proves that t counts the organizational culture is greater than t table (2.600> 2.0262). The hypothesis which states that work facilities have a effect on the performance of teachers at SMA 5 Purwokerto, with a confidence rate of 95%, is accepted. This is evidenced by the t test which proves that t work facility count is greater than t table (2,313> 2,0262).
THE INFLUENCE OF WORK-LIFE QUALITY AND TRANSFORMATIONAL LEADERSHIP ON THE LECTURERS OF AKPELNI SEMARANG Devi Kusumaningrum; Haryani; Karjono; Tini Utami
Jurnal Maritim Malahayati Vol. 3 No. 1 (2022): Jurnal Maritim Malahayati
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat, Politeknik Pelayaran Malahayati

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Abstract

Akpelni is one of the maritime vocational higher schools which educate the candidate of seafarers in Indonesia. Therefore, this research is done to look for a solution to a problem faced by Akpelni observational Aim. This is subject to learning how to build lecture performance with enhanced quality of work life and transformational leadership as variable as free. Observational Model examination empiric utilizes regression get phase on programs SPSS version 21.00. This observational Population is all lecturers at Akpelni. Base sample requirement that representative; therefore sample amount in observational is 60 respondents with the census method. All examinee hypothesis on observational can be accepted since t test point out the result that significant. This observational result points out a positive relationship and significance between the quality of work life and lecture performance and positive influential transformational leadership and significant to lecture performance. The results showed that quality of work life is the most influential factor on lecture performance to the value of the regression coefficient of 0.459. The strategic finding in this research materializes profound managerial implications by regards various strategy push the quality of work life for lectures in achieving lecture performance. This observational recommendation is needed to step up in performing each observational variable and evaluate the resulting managerial policy utilized up to the better lecture performance.