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Edward, Edward
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Pengukuran Total Petroleum Hidrokarbon (TPH) Melalui Pendekatan Kadar Minyak-Lemak dalam Sedimen di Perairan Delta Cimanuk, Jawa Barat Wulandari, Ita; Yogaswara, Deny; Khozanah, Khozanah; Edward, Edward; Rositasari, Ricky; Falahudin, Dede
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (843.826 KB) | DOI: 10.14203/oldi.2019.v4i2.272

Abstract

Determination of Total Petroleum Hidrokarbon (TPH) through the Concentration of Oil and Grease (OG) in the Surface Sediment of Cimanuk Delta Waters, West Java. The Estuary of Delta Cimanuk is located in the coastal water of Indramayu, West Java. The pollution in the Cimanuk Delta was originated from households and industrial waste on coastal dan upland areas. Coupled with the traffic activities of fishing vessels at the fish landing (PPI) and fishing port (PP) bases around the waters, oil and grease contamination would be a threat as pollution in Indramayu coastal area. The major source of OG component on coastal waters was animal and vegetal fat and total petroleum hydrocarbon (TPH). The objectives of the study are to estimate the concentration and spatial distribution of TPH in the sediments of the Cimanuk watershed based on OG levels, and identifying the distribution of TPH-contaminated areas. Fourier Transform Infrared Spectroscopy (FTIR) instrument was applied to determine OG compounds in the sediment samples.  The results showed that OG concentrations in sediments were varied between <1 to 138.104 mg kg-1 dry weight (dw), while TPH was estimated at 0.24 ? 36.60 mg kg-1 dw. The highest concentrations of OG was observed on St-10 in the northeast coast. Compared to the threshold value of sediments quality guidelines according to ANZECC (OG: 280-550 mg kg-1 dw), the TPH levels in eighteen observation stations were within normal range. The increased pollutant intake in Cimanuk watershed will threat the estuary as well as its biodiversity.
SISTEM KONTROL ARMADA PENJUALAN: SEBUAH MODEL KONSEPSUAL DAN PROPOSISI PENELITIAN Edward, Edward
Jurnal Sains Pemasaran Indonesia (Indonesian Journal of Marketing Science) Vol 5, No 3 (2006): Desember
Publisher : Master of Management Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1190.639 KB) | DOI: 10.14710/jspi.v5i3.229-242

Abstract

Tujuan sistem kontrol armada penjualan adalah untuk menjamin pencapaian tujuan-tujuan keorganisasian yang diinginkan. Akan tetapi, kajian-kajian riset terdahulu mengenai sistem kontrol armada penjualan pada umumhya menemukan hubungan-hubungan yang relatif lemah antara sistem kontrol dan kinerja tenaga penjualan. Bahkan sistem kontrol dapat membuat tenaga penjualan berperilaku disfungsional. Artikel ini menutup kesenjangan riset- riset terdahulu dengan mengajukan sebuah model yang komprehensif mengenai sistem kontrol armada penjualan, yakni model sistem kontrol yang mengkaji efek-efek tidak langsung di samping efek-efek langsung serta model efek-efek moderator dalam hubungan sistem kontrol dengan kinerja tenaga penjualan, yang ketiganya dirangkum dalam tiga proposisi spesifik yang dapat menjadi arahan bagi riset mendatang.
Distribusi Spasial, Sumber Pencemaran, dan Kajian Risiko Ekologi Polisiklik Aromatik Hidrokarbon (PAH) dalam Sedimen Pesisir di Pulau Bintan, Indonesia Yogaswara, Deny; Wulandari, Ita; Khozanah, Khozanah; Edward, Edward; Falahudin, Dede
Jurnal Teknologi Lingkungan Vol. 20 No. 2 (2019)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (568.774 KB) | DOI: 10.29122/jtl.v20i2.3547

Abstract

ABSTRACTBintan Island is the small island in the Riau Archipelago which borders Singapore and Malaysia. Its water is crossed by international shipping lines. Therefore, water quality in this area is potentially polluted by marine activities. The present study aimed to evaluate the concentration, spatial distribution, and assessment of ecological risks of polycyclic aromatic hydrocarbons (PAHs) in surface sediments from selected coastal water of Bintan. Surface sediments in this study were extracted by using the ultrasonic system and determined with GCMS. The data were visualized with ArGIS software for spatial distribution mapping, applied ratio diagnostic methods for the source of PAH contamination, and assess their ecological risk based on sediment quality guidelines. The results showed PAHs concentrations ranged from below the method detection limit (<DL) to 13.492 ng.g−1(dry weight) with the highest concentration of PAHs were detected at TJU 1 station as much as 13.492 ng.g-1. As many as seven types of PAHs were identified in Bintan water, they were Naphthalene (two rings), Fluorene and Anthracene (three rings); fluoranthene, Pyrene, Benzo (a) Pyrene and Chrysene (five rings). Based on diagnostic ratios, the sources of PAHs in this coastal area were mainly from pyrogenic origins. Ecological risk assessment has shown that the average value of ∑10 PAH in Bintan waters (5.855 ng.g-1) is lower than the corresponding ERL, ERM, TEL, and PEL value indicating that the adverse biological effects of PAHs are generally low.Keywords: Polycyclic Aromatic Hydrocarbons (PAHs), Distribution, Pollution, Bintan WatersABSTRAKPulau Bintan merupakan pulau kecil di Kepulauan Riau yang berbatasan langsung dengan negara Singapura dan Malaysia serta perairannya dilintasi oleh jalur pelayaran internasional sehingga potensi pencemaran dari aktivitas di laut sangat tinggi. Penelitian ini bertujuan untuk mengukur konsentrasi, distribusi spasial, sumber asal pencemaran dan analisis resiko lingkungan senyawa PAH dalam sedimen permukaan di perairan pesisir Pulau Bintan. Sedimen permukaan diekstraksi dengan sistem ultrasonik dan dianalisa akhir dengan GCMS. Data senyawa PAH diolah dengan software ArGIS untuk membuat peta distribusi spasial, dianalisa dengan metode diagnosa rasio untuk mengetahui sumber pencemarnya dan dibandingkan dengan nilai baku mutu sedimen untuk mengkaji resiko ekologinya. Hasil analisis di setiap stasiun sampling di Muara Pengudang dan Tanjung Uban menunjukkan konsentrasi Total PAH (TPAH) berkisar antara < limit deteksi alat (1 ngg-1) sampai 13,492 ng.g-1 berat kering dengan konsentrasi tertinggi terdeteksi di stasiun TJU 1 yaitu sebesar 13,492 ng.g-1.  Sebanyak tujuh jenis senyawa PAH teridentifikasi di perairan Bintan ini diantaranya Naphthalene, (dua cincin benzene), Fluorene dan Anthracene (tiga cincin benzene); Fluoranthene, Pyrene, Benzo (a) Pyrene, dan Chrysene (empat cincin benzene). Berdasarkan analisa diagnosa rasio, sumber pencemaran PAH di perairan pesisir Bintan adalah berasal dari kombinasi antara sumber pirogenik. Analisis resiko lingkungan menunjukkan nilai rata-rata ∑10 PAH di perairan Bintan (5,855 ngg-1) masih rendah dibandingkan nilai ERL, ERM, TEL dan PEL, hal tersebut mengindikasikan bahwa efek biologis senyawa PAH secara umum rendah.Kata kunci: Polisiklik Aromatik Hidrokarbon (PAH), Sebaran, Pencemaran, Perairan Bintan
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PERINGKAT OBLIGASI PADA PERUSAHAAN-PERUSAHAAN SEKTOR PERBANKAN YANG TERDAFTAR DI BURSA EFEK INDONESIA TAHUN 2015-2018 Tannia, Tannia; Aryanilo, Aryanilo; Edward, Edward
ECOBISMA (JURNAL EKONOMI, BISNIS DAN MANAJEMEN) Vol 7, No 2 (2020): Volume 7 No. 2 Tahun 2020
Publisher : Fakultas Ekonomi dan Bisnis (FEB) Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/ecobi.v7i2.1777

Abstract

Bond is one financial instrument that are interest to investors, in making decisions to buy bond the rating of bond can be the basis to buy bonds. The rating of bond can be seen from the ranking institution like PEFINDO. This study was conducted to analyze factor that influence the rating of bond in banking companies listed on Indonesia Stock Exchange period 2015 to 2018. Suspected factor that influence the rating of bonds is Capitalization, Liquidity, Profitability. Research Method used Multiple Linear Regression, hypothesis testing using F test and T test with level of significance 5% (α= 0,05). Type data that used is secondary data. In this study the sample is 22 banking companies Data was obtained from Indonesia Stock Exchange official site. The sampling technique is determined using targeted sampling (purposive sampling). The result form hypothesis testing is caplitalization, liquidity, profitability not affect the rating of bonds partially and simultaneously.
Pengaruh Rasio Penambahan Acticomp Terhadap Degradasi Struktur Morfologi Tandan Kosong Kelapa Sawit Pada Proses Pengomposan Metode Windrow Nurfajri, Nabila; Yenie, Elvi; Edward, Edward
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Oil palm empty fruit bunches (OPEFB) is a solid waste that significantly produced by palm oil mills. The main content of OPEFB is lignocellulose. High lignin in OPEFB cause the lenghth time of OPEFB decompositition. The decomposition process can be accelerated by the addition of decomposers, such as acticomp. Therefore, this study aimed to analyze the degradation of structure morphology OPEFB also composting time and C/N ratio by the addition of acticomp. This research method using three variations of the ratio addition acticomp to 100 kg OPEFB composted, 0.5 kg acticomp, 1 kg acticomp and 1.5 kg acticomp. The comsposting process using windrow composting system. The results were obtained the damage of OPEFB morphological structure and the decreasing ratio of C/N whereas 1.5 kg acticomp/100 kg as the biggest within 30 days. C/N ratio reached 19.67, in accordance with the regulation of the quality standards 28/Permentan/SR.130/5/2009.Keywords: acticomp, OPEFB, degradation of OPEFB, morphological of OPEFB, windrow composting
PENGAMATAN KADAR MERKURI DI PERAIRAN TELUK KAO (HALMAHERA) DAN PERAIRAN ANGGAI (PULAU OBI) MALUKU UTARA Edward, Edward
Makara Journal of Science Vol. 12, No. 2
Publisher : UI Scholars Hub

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Abstract

Observation on Mercury Concentration in Kao Bay (Halmahera) and Anggai Waters (Obi Island), North of Maluku. Observation on merkuri concentration in territorial waters of Kao Bay and Anggai have been done in January 2005. The result showed that mercury concentration in seawater and sediment in territorial waters of Kao Bay and Anggai waters still lower and still in line with peaceful threshold value for waters biota life. This data indicate that waste of mercury coming from activity of gold mining by PT Nusa Halmahera Raya (NHR) and illegal gold mining by society not yet polluted both of that waters.
PENGAMATAN KADAR MERKURI DI PERAIRAN TELUK KAO (HALMAHERA) DAN PERAIRAN ANGGAI (PULAU OBI) MALUKU UTARA Edward, Edward
Makara Journal of Science Vol. 11, No. 2
Publisher : UI Scholars Hub

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Abstract

Observation on Mercury Concentration in Kao Bay (Halmahera) and Anggai Waters (Obi Island), North of Maluku. Observation on merkuri concentration in territorial waters of Kao Bay and Anggai have been done in January 2005. The result showed that mercury concentration in seawater and sediment in territorial waters of Kao Bay and Anggai waters still lower and still in line with peaceful threshold value for waters biota life. This data indicate that waste of mercury coming from activity of gold mining by PT Nusa Halmahera Raya (NHR) and illegal gold mining by society not yet polluted both of that waters.
DAMPAK PENCEMARAN LOGAM BERAT TERHADAP KUALITAS AIR LAUT DAN SUMBERDAYA PERIKANAN (STUDI KASUS KEMATIAN MASSAL IKAN-IKAN DI TELUK JAKARTA) Lestari, Lestari; Edward, Edward
Makara Journal of Science Vol. 8, No. 2
Publisher : UI Scholars Hub

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Abstract

Effect of Heavy Metals Pollution to Seawater Quality and Fishery Resources (Case Study on Fish Death in Jakarta Bay). Observation on heavy metals content in sea water were carried out in Jakarta Bay waters in May 2004. Heavy metals observed were Hg, Pb, Cd, Cu, Zn and Ni. This observation is conducted with fishes total death in this waters. Observation is done in Ancol beach 1 (3 stations), Ancol beach 2 (4 stations), Cilincing (3 stations), and Dadap River estuary (4 Station). The results showed that the average concentration of Hg, Cd and Cu in Ancol beach 1 were
KANDUNGAN TOTAL ZAT PADAT TERSUSPENSI (TOTAL SUSPENDED SOLID) DI PERAIRAN RAHA, SULAWESI TENGGARA Tarigan, M S; Edward, Edward
Makara Journal of Science Vol. 7, No. 3
Publisher : UI Scholars Hub

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Abstract

Total Suspended Solid Content in Raha Waters, Northeast of Celebes. Measurement on Total Suspended Solid (TSS) in Raha waters were carried out in May 2001. The results showed that the content of total suspended solid varied between 74,8 – 78,9 ppm with averages content is 76,5 ppm. This content is still suited to the threshold value stated by government decree in 1988 for fishery and sea conservation park, but not suitable for recreation (swimming, diving activity).
KANDUNGAN LOGAM BERAT Pb, Cd, Cu, Zn DAN Ni DALAM AIR LAUT DAN SEDIMEN DI MUARA SUNGAI MEMBRAMO, PAPUA DALAM KAITANNYA DENGAN KEPENTINGAN BUDIDAYA PERIKANAN Tarigan, Z.; Edward, Edward
Makara Journal of Science Vol. 7, No. 3
Publisher : UI Scholars Hub

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Abstract

Heavy Metals Content Pb, Cd, Cu, Zn And Ni In Sea Water And Sediment In Membramo Estuary And Its Relationship With Fishery Cultivation. Obervation on heavy metals Pb, Cd, Cu, Zn and Ni content in Jakarta Bay were carried out in August 2003. The results showed that the Pb, Cd, Cu, Zn, and Ni content still in line with threshold value stated by for fisheries. By the all, in sea water Zn content is higher compared to the others, while in sediment Ni is higher. This data showed the result show that on waters of Membramo River Zn and Ni waste than others elements.
Co-Authors Adawiyah, Rodiatun Almughni, Opel Annahlia, Khannisa Aprira, Aprira Arjana, Putu Handy Aryanilo, Aryanilo Aryo Sasmita Asep Machpudin Dede Falahudin Edy Firza Elvi Yenie, Elvi Firmansyah Firmansyah Fitriani, Dina Gunawan Putrodjojo Hery Widijanto Hutapea, Lamhot Hutapea Ita Wulandari Julius Sutrisno Junaidi Junaidi Khozanah Khozanah Lestari Lestari Lestari, Dian Fita Lestari, Elin M Djen Marasabessy Mohammad Fauzi Mohammad Ihsan Nurfaisal, Nurfaisal Nurfajri, Nabila Pramesrianto, Adela Ricky Rositasari Rifa'i, Ahmad Shofarudin, Ukis Shofia Amin Sihol Situngkir, Sihol Sorta Hutahaean, Sorta Sugianto, Michaelli Sumarni Sumarni Sunengko, Sunengko Syahbana, Rudea Faddhisrah Tannia, Tannia Tarigan, M S Tarigan, M. M. Tarigan, Z Tarigan, Z. Ubelsa, Afenda Valentin, Febriana Lisa Yogaswara, Deny Yogaswara, Deny Zulfina Adriani