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All Journal JOURNAL OF COASTAL DEVELOPMENT Ekonomikawan : Jurnal Ilmu Ekonomi dan Studi Pembangunan PROSIDING SEMINAR NASIONAL CENDEKIAWAN
Lestari .
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Economics, Econometrics & Finance Education

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ANALISIS RASIO SOLVABILITAS DAN AKTIVITAS UNTUK MENILAI KINERJA KEUANGAN PADA PT. ANEKA GAS INDUSTRI Ikhsan Abdullah; Lestari .
Ekonomikawan: Jurnal Ilmu Ekonomi dan Studi Pembangunan Vol 14, No 2 (2014): Jurnal Ilmu Ekonomi dan Studi Pembangunan
Publisher : UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.357 KB) | DOI: 10.30596/ekonomikawan.v14i2.216

Abstract

Financial statement analysis is a process that full consideration in order to help evaluate the financial position and results of operations of the company in the present and the past, with the aim to determine the elimination and the most likely prediction about the condition and performance of the company in the future. This study aimed to see whether the performance of the company is in good condition or not then be compared with the average standard of the industry. Analyzer used in PT. Aneka Gas Industri Medan is the solvency ratio, the debt to asset ratio (DAR) and the debt-to-equity ratio (DER) and the ratio of activity, namely the total asset turnover (TATO). The solvency ratio indicates the extent to which the company is capitalized with debt. Activity ratio indicates a company's ability to carry out daily activities. In this research using descriptive analysis techniques and sources of secondary data by using documentation and interviews. Based on the results of this study concluded that the views of the DAR, DER, and TATO shows the company's debt is still quite high due to the considerable assets to use debt financing, the imbalance of debt rise with the increase in owner's equity, and the lack of effective companies using owned assets to generate sales maximum. So that the resulting financial performance at PT. Aneka Gas Industri Medan overall assessed poorly and yet meet the standards of the industry average.
STUDY OF METAL CONTAMINANT LEVEL IN THE MAHAKAM DELTA: SEDIMENT AND DISSOLVED METAL PERSPECTIVES Fitri Budiyanto; Lestari .
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 2 (2013): VOLUME 16, NUMBER 2, YEAR 2013
Publisher : JOURNAL OF COASTAL DEVELOPMENT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1367.804 KB)

Abstract

The Mahakam Delta in East Kalimantan contains large number of natural resources specially hydrocarbon sources. Anthropogenic activities have influenced this ecosystem for many years. The aims of this work were to find out dissolved metal and metals in sediment distribution in this area and to find out contaminant level based on allowable guidelines. Twenty nine stations were sampled within the delta and metal content analyses, both in sediment and water column, were established for Cd, Cu, Ni, Pb and Zn. Sediment analyses were conducted using US EPA 3050B method and dissolved metals analyses were conducted using Back Extraction method. Cd, Cu, Ni, Pb and Zn in sediment had 0.07 mg/kg dw, 18.64 mg/kg dw, 35.62 mg/kg dw, 10.56 mg/kg dw and 74.95 mg/kg dw in maximum concentration respectively. Whereas dissolved Cd, Cu, Ni, Pb and Zn had 0.001 mg/l; 0.003 mg/l; 0.003 mg/l; 0.013 mg/l and 0.003 mg/l in maximum concentration respectively. Based on allowable guidelines, metals contaminat levels, both in sediment and water column, were below permitted value.
STUDI LABORATORIUM MENGENAI PENGARUH PENINGKATAN KONSENTRASI SURFAKTAN TERHADAP PENINGKATAN PRODUKSI MINYAK PADA INJEKSI SURFAKTAN DENGAN KADAR SALINITAS AIR FORMASI YANG BERVARIASI Tommy Viriya; Lestari .
PROSIDING SEMINAR NASIONAL CENDEKIAWAN Prosiding Seminar Nasional Cendekiawan 2015 Buku II
Publisher : Lembaga Penelitian Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/semnas.v0i0.185

Abstract

Metode EOR merupakan upaya yang dilakukan untuk meningkatan perolehan minyak denganmenggunakan energi dari luar reservoir. Salah satu metode EOR yang digunakan adalah injeksisurfaktan yang termasuk jenis chemical flooding. Surfaktan digunakan untuk memproduksi minyakyang terjebak dalam pori batuan dengan mengurangi tegangan permukaan antara minyak dan airyang terdapat dalam pori batuan, sehingga akan menigkatkan Recovery Factor. Salah satu faktoryang mempengaruhi kerja surfaktan adalah kadar salinitas air formasi. Pada penelitian ini akandibuktikan apakah memang kadar salinitas air formasi mempengaruhi kerja surfaktan danseberapa jauh pengaruhnya. Hasil yang didapat pada kajian ini bahwa memang benar kadarsalinitas air formasi akan mempengaruhi kerja surfaktan dimana RF terkecil dihasilkan oleh larutandengan kadar salinitas terkecil dan konsentrasi surfaktan terkecil sedangkan RF terbesardihasilkan oleh larutan dengan kadar salinitas terkecil dan konsentrasi surfaktan terbesar.
Co-Authors Edward . Fitri Budiyanto Ikhsan Abdullah Tommy Viriya