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Scientific Contributions Oil and Gas
Published by LEMIGAS
ISSN : 20893361     EISSN : 25410520     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy
The Scientific Contributions for Oil and Gas is the official journal of the Testing Center for Oil and Gas LEMIGAS for the dissemination of information on research activities, technology engineering development and laboratory testing in the oil and gas field. Manuscripts in English are accepted from all in any institutions, college and industry oil and gas throughout the country and overseas.
Arjuna Subject : Energi (semua kategori) - Teknologi Bahan Bakar
Articles 2 Documents
 1 
Search results for , issue "Vol 7 No 2 (1984)" : 2 Documents clear
Occurrence Of Tar Pollution Along Some Shores In Indonesia J. Bilal B Prasetyo; G. Bodennec L. Loubersac M. Joanny
Scientific Contributions Oil and Gas Vol 7 No 2 (1984)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.7.2.903

Abstract

Four typicul Indonesian costr : Jakarta Bay, Malacea and Makussar Strats, as well as South coart of Yogyakurta, Central Java, were nurveyed in August 1982 and May 1984 with the purpose of assessing, quantifying and identifying tar stranded thereon. The estimution of tar pollution was determined using a typical statistical methodology bated on a stratifled rundom sampling Quantitative beach sampling conducted in Augar 1982 during the East monuoon season yielded avenage stranded beach tar concentrations nanging from less than 1 gim to about 2.800gim (values in grost weight) of shoreline. The vuhuer obtutned in May 1984 after the West monsoon ranged between 2,8 and 9.500 g/m. In the two nunveys, the most polhuted area was located in the Kepulaun Seribu area (Jaharta Ray) Average tar weight of over 2 kaim beach are comparuble to that of other couut along major tanker routes as Kuwait or Benmuda Obuerved tur pollution in Aulae Kapal Besar , labon Kecil, Nirup, Pelampong and Takong Kecl (in the Straits of Malacca) and Langga Beach (on the Straits of Makussar) war lower during these nurveys. The reason why inapite of such dense marine traffic is not clear, until one examines the internal current circulation between the islands, the local geopaphical feutwes of the site and preferen tial wind directions.
DEHYDROCYCLIZATION OF NORMAL HEPTANE TO TOLUENE USING BI-METALLIC REFORMING CATALYSTS A.S. Nasution
Scientific Contributions Oil and Gas Vol 7 No 2 (1984)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.7.2.1167

Abstract

Dehydrocyclization of n-heptane and the influence of benzene on this reaction has been carried out with bi-metallic reforming catalyst at the operating temperature : (from 450° to 490C), pressure (from 10 to 30 kg/cm), H/lydrocarbon (from 4 to 12 mole/mote) by using a Catatest unit apparatur.

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