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"In order to investigate spatial and temporal variability of dissolved organic carbon 9DOC) and particulate organic carbon (POC) , several samples were collected from five estuaries,inner part and outer part of jakarta Bay...."

"Penelitian bertujuan mengungkap pola distribusi spatial dan temporal serta laju akumulasi dari padatan tersuspensi (SS; Suspended Solid) dalam sedimen di perairan situ cibuntu, Kabupaten Bogor Jawa Barat. Alat yang digunakan adalah Experimental Sedimentation Trap (EST) yang ditanam selama tiga hari pada tiga lokasi berbeda (inlet,tengah,outlet situ) dengan periode pengamatan selama tiga bulan (Februari,April,Mei 2005). Data diolah secara optimal (trendline analysis) untuk mengetahui pola hubungan dari waktu ke waktu dan antar parameter. Kandungan rata-rata SS tertinggi dijumpai di bagian inlet (225,09 g/L) dan terendah di bagian tengah (0,613 g/L) dengan sebaran tertinggi dijumpai pada bulan april (inlet 530,38 g/L, tengah 0,78 g/L). Sebaliknya, kadar rata-rata karbon organik dan TOM tertinggi di bagian tengah (1,72 persen dan 2,96 persen) dan Februari (tengah 2,75 persen dan 4,73 persen, inlet 2,25 persen dan 2,15 persen). Pola distribusi spasial SS sejalan dengan laju akumulasi dimana laju akumulasi SS terbesar di bagian inlet (25,1 mg/m/hari). Tidak demikian halnya dengan karbon organik dan TOM,laju akumulasinya terbesar di bagian outlet, masing-masing 112,32 mg/m/hari dan 193,64 mg/m/hari dan terndah di bagian inlet,masing-masing 38,0 mg/m/hari. Hubungan laju akumulasi karbon organic dan TOM terhadap SS sangat kuat (R=1) dalam persamaan polynomial order 2. "

"Preceding monitoring reports indicated that di (2-ethylhexyl) phthalate (DEHP), a commonplasticizer, was found in the samples of suspended sediment and water collected from the lowerpart of Chao Phraya River. In this continuing study, the suspended sediment and water samplesfrom the Chao Phraya Delta were collected twice a year in January and July during January 201 1 -July 2013. The analyses were performed for both DEHP and Diethyl Phthalate (DEP). Overallresults showed that concentrations of both DEHP and DEP in the water samples were relativelyhigher than those in the suspended sediment samples. The concentrations of DEHP and DEP fromall sampling periods in the water samples ranged from 1.58 - 27.55 pg/L and from 0.64 - 2.59ug/L, respectively, whereas the concentrations of DEHP and DEP from all sampling periods in thesuspended sediment samples ranged from 0.01 - 26.82 mg/g and from 0.01 - 1.93 mg/g,respectively. The concentrations of both DEHP and DEP in both suspended sediment and watersamples were relatively higher in the samples collected during lower discharge period of the ChaoPhraya River in July. The results indicated that sediment transport system could play an importantrole in the dispersion of both DEHP and DEP. The ecological risk assessment indicated that for thecurrent level of contaminations the risk did not exceed the acceptable level."

"Dalam peningkatan eksplorasi minyak dan gas bumi diperlukannya aspek penelitian yang lebih detail dalam pencarian minyak dan gas bumi. Salah satu aspek penting dalam tahapan eksplorasi adalah system petroleum. System petroleum merupakan suatu system yang menggambarkan elemen dan proses dalam membentuk dan menciptakan akumulasi hidrokarbon. Salah satu element terpenting dalam system petroleum adalah batuan induk source rock. Penelitian ini bertujuan untuk menerapkan beberapa data yang diintergrasi sebagai penunjang dalam merekronstruksikan cekungan daerah penelitian. Metode yang digunakan dalam penelitian ini adalah pemodelan cekungan 2D skala lapangan pada lintasan seismik untuk melihat kondisi bawah permukaan yang diintegrasikan dengan hasil persebaran Acoustic Impedance vs total organic carbon. Berdasarkan hasil evaluasi geokimia diketahui lapangan HL yang berada pada sub cekungan Jambi memiliki potensi yang baik pada Formasi Talang Akar dan Gumai dengan nilai TOC 0.6-1 wt untuk formasi Gumai dan 1-1.6 wt untuk formasi Talang Akar, dengan kerogen tipe III. Hasil reflektansi vitrinite pada Formasi Talang Akar dan Gumai di keseluruhan area penelitian yang diwakili oleh sumur pemboran teridentifikasi mature. Hasil persebaran TOC menunjukan pola dominasi dengan potensi TOC yang baik pada Formasi Talang Akar dengan mengisi depositional center pada daerah penelitian. Hasil akhir penelitian ini adalah rekonstruksi kematangan batuan induk yang menunjukan bahwa kematangan batuan induk pada formasi Talang Akar yang digambarkan dengan reflektansi vitirinite menujukan pada periode Miocen Tengah 18.7 ma dengan nilai Ro sebesar 0.6 . pada periode tersebut merupakan fase dimana sedang terjadinya pola sag sehingga termperature tertinggi pada depositional center 170 0 C. Transformasi Ratio akan megambarkan presentasi batuan induk explusi, pada periode tersebut presentasi TR sebesar 40.

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Increasing oil and gas exploration aspect be required for more detail research in the oil and gas exploration. One of important aspect in the exploration stage is petroleum system. Petroleum system is a system that describes element and processes in the migration and explution hydrocarbon accumulation. One of the most important elements of a petroleum system is the source rock. This study to integrated data as support reconstructing the research area basin. The method used in research is modeling 2D field scale basin on the sesmic path to know subsurface conditions. Distribution Source Rock using Acoustic Impedance vs TOC to knowing about potential of source rock.

Based on the results of geochemical evaluation in HL field that the good potential of source rock is Gumai Formation and Talang Akar Formation with the result 0.6 1 wt for Gumai Formation and 1 1.6 wt for Talang Akar Formation with type kerogen number III. Maturity aspect used Ro vitrinite reflectance the result only meature for all data. The result of distribution TOC show domination high potential TOC on Talang Akar formation filling the depositional center in the study area.

The final result of this research is maturity 2D model of source rock wich show that maturity of the source rock in talang akar formation at Middle Miocene 18.7 ma with Ro value 0.6 . The transformation ration will describe source rock explosion. At middle miocen the velnue TR is 40."

"A detailed combined geological and geophysical study in North Sumatra basin has shown that prospective formations for shale play containing gas sweet spots are found to be shales from Bampo, Belumai, and Baong Formations. Bampo Formations Exhibits low shale gas potential with very low to medium in organic material contents, maturity index of immature to mature, and moderate brittleness. Rocks within the formation tent to be reactive to highly reactive to water, with a moderate degree of swelling capacity. Porosity varies within 5.8-7.4% with permeability raging from 0.37 to 3.2 mD. Sweet spots in the formation found around Basilam-l and Securai-l wells occupy about 21% of the formation. On the other hand, Belumai Formation shows moderate to good shale gas potential, with low to high organic material contents, immature to mature levels of maturity, and moderately brittle to brittle. Sweet spots areas in the formation fpund around the two wells are about 29% of the formation. For Baong Formation, analysis reveals moderate to good shale gas potential, with low to medium contents of organic material, immature to mature in maturity index, moderately brittle to brittle in brittleness, and tendency of being reactive to highly reactive to water but with low degree of swelling capacity. Sweet spots in the formation found around two wells occupies are roughly 11% of the total formation volume in the area. Basin modeling leading to gas resources estimation for Baong, Belumai, and Bampo Formations has led to estimated volumes of 6, 379 TCF, 16, 994 TCF, and 25,024 TCF, respectively, with a total amount of 48, 397 TCF. The resources figures are speculative in nature and do not incorporate any certainty and efficiency factors."

"Investigasi terhadap terhadap Hasil Uji di Luar Spesifikasi (HULS) diperlukan untuk mengidentifikasi akar permasalahan dari HULS sehingga Tindakan Korektif dan Tindakan Perbaikan (TKTP) atau Corrective Action and Preventive Action (CAPA) dapat diinisiasi untuk mencegah terjadinya keterulangan (recurrence) dari HULS. Pemantauan parameter air berdasarkan parameter nilai organik total (Total Organic Carbon/TOC) dibutuhkan sebagai bentuk pemastian mutu sistem air yang digunakan dalam kegiatan produksi obat. Laporan ini disusun untuk mengetahui imlementasi dari investigasi HULS dan inisiasi terhadap TKTP atau CAPA. Laporan ini disusun di PT. Kalbio Global Medika, Cikarang, Jawa Barat pada periode Mei hingga Juni 2022 terhadap sampel air murni (Pure Water). Berdasarkan hasil investigasi HULS, HULS disebabkan oleh pengambil sampel (sampler) tidak menempatkan vial TOC langsung pada kotak sampel yang mengakibatkan sampel terkontaminasi oleh alkohol. Pada laporan ini, diagram fishbone digunakan sebagai langkah awal dalam mengidentifikasi akar permasalahan HULS. TKTP yang diinisasi adalah penambahan tanda (sign tag) pada kotak sampel TOC.

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Investigation on Out-of-Specification (OOS) results are needed to identify the root causes of OOS so that Corrective Action and Corrective Action (CAPA) can be initiated to prevent recurrence of OOS. Water quality parameters based on total organic carbon (TOC) is needed as a form of quality assurance of water systems used in drug production activities. This report aims to find out the implementation of OOS investigations and to initiate CAPA. This report was composed on May to June 2022 at at PT. Kalbio Global Medika, Cikarang, West Java, with Pure Water (PW) as the samples. Based on the results of the OOS investigation, OOS was caused by the sampler not placing the TOC vial directly in the sample box which resulted in the sample being contaminated with alcohol. In this report, a fishbone diagram is used as a first step in identifying the root causes of OOS. The CAPA initiated is the addition of a sign (sign tag) to the TOC sample box."