Judul: Kontribusi Kapal Perikanan Yang Berbasis Di Ppn Palabuhanratu Terhadap Polusi Laut
Abstrak: Pencemaran merupakan salah satu faktor penyebab rusaknya suatu lingkungan termasuk lingkungan laut. Pencemaran yang terjadi di laut dapat mengakibatkan kerusakan ekosistem di dalam laut, bahkan jika terjadi dalam tingkat pencemaran yang tinggi, dapat mengakibatkan kematian pada biota laut yang hidup didalamnya. Salah satu aktivitas yang berpotensi menyebabkan pencemaran di laut adalah aktivitas penangkapan ikan. Oleh karena itu, penelitian ini dilakukan dengan untuk mengidentifikasi komposisi jenis limbah yang dihasilkan kapal perikanan dan mengidentifikasi pola perilaku dan cara pandang nelayan terhadap penanganan limbah dan pencemaran laut. Kajian dilakukan terhadap kapal-kapal perikanan yang berbasis di PPN Palabuhanratu sebagai contoh kasus. Pendataan komposisi limbah dilakukan secara survey pada keseluruhan jenis alat tangkap yang dibagi kedalam kelas dimensi. Berdasarkan hasil kajian diketahui bahwa komposisi limbah yang dihasilkan oleh unit kapal perikanan di PPN Palabuhanratu didominasi oleh limbah jenis organik. Pola tingkah laku nelayan didominasi oleh kebiasaan untuk membuang limbah tidak pada tempatnya. Hal ini disebabkan oleh ketidaktahuan nelayan akan pentingnya pengendalian lingkungan dan pencegahan pencemaran laut.
Keyword: kapal perikanan, polusi laut, PPN Palabuhanratu

Judul: Pengelolaan Lingkungan di Pelabuhan Perikanan Studi Kasus di Pelabuhan Perikanan Nusantara Palabuhanratu
Abstrak: Increasing amount of production and number of fishing vessel into the fishing port positively correlation with increased potential of waste generated, arising from land based activities and marine activities. Land activities activities include originating from the office, manufacturing and/or repair of boats and nets, stalls and shops as well as industrial activities and so on. Several objectives of this study are 1) Get an overview of the implementation of environmental management mechanism in PPN Palabuhanratu both technically, and social institutions; 2) Knowing the status of water quality in the PPN Palabuhanratu; 3) Formulating waste management strategies in PPN Palabuhanratu. To obtain this goal is the method used purposive sampling method through direct field observation, in-depth interviews with actors port activities, related literature, documentation and analysis of data used is the SWOT. Observations on environmental management facilities in accordance with the PPN Palabuhanratu not necessary as presented in the existing legislation. PPN Palabuhanratu, do not have adequate waste management facilities such as a waste water treatment plant (IPAL) and reception facilities. Existing of waste management facilities in PPN Palabuhanratu are trash bins, container of used oil, temporary trash container and trash hauler unit. Wastes generated from 1) Activities office which includes domestic waste as well as organic and inorganic, hazardous and toxic waste (B3) generated from office activity that uses a number of office equipment such as paper, printer and lighting facilities; 2) Activities added which includes washing vessel anchoring, hatch, Bilge water discharge vessel and packaging waste and leftover supplies that are not used; 3) fish landings and sales activities of the catch which includes waste water ice is used as a pickling fish, cleaning fish and fish waste itself coming into port through the drainage pond, 4) supplies replenishment activities which include waste from spills of oil and / or oil, leftover bait fish fillet results in the form of fish heads and bones ± 50% of the number of fish used for bait are generally discharged directly into in the port basin; 5) Activity repair /ship building (docking) and repair nets which includes domestic waste from workshop workers, waste used oil, scrap metal, rags and scrap material; 6) Activity Store (shop) which includes a waste leftovers , packaging waste and waste drainage from washing / kitchen activities; 7) industrial activities that include domestic waste from activities worker accommodation, ice from fish waste, building waste drainage and leaching residual waste packaging materials. These wastes have an impact on water quality and sediment in the port basin with implications for community water biota (plankton and benthos). Based on the analysis carried out (sample observations at several stations) there are some physical and chemical parameters that do not meet environmental standards, which include brightness, solid waste, odor, presence of oil sheens as well as high levels of ammonia. Determination of status of water quality used method “Indeks Pencemaran (IP)” and STORET water quality at ST.1, who was on the scene ST.3 port basin II and ST. 4 outside the port basin infered the light weight contaminated category. Meanwhile ST.5 ST.6 and ST.7 located
Keyword: environmental management, fishing port, waste management

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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