Judul: Phytoremediasi Greywater dengan Tanaman Kayu Apu (Pistia stratiotes) dan Tanaman Kiambang (Salvinia molesta) serta Pemanfaatannya untuk Tanaman Selada
Abstrak: Waste are residue from certain efforts of human activities in solid, liquid or gas form and have less economical value. Liquid waste often dispose to sewage water so it could decrease water quality. Domestic waste known as prominant contaminant of water environments. Usage water for domestic requirement is much higher than industrial where organic contents in domestic waste is basicly “biodegradable”. Domestic wastewater is devided into blackwater and greywater. Blackwater is waste from toilets, faecal matter including industrial product, whereas greywater is none industrial wastewater generated from domestic processes such as bathing, dishing and kitchen washing. These research particularly focuse on greywater (bath waste) because it much easy to treat and recycle than blackwater, due to lower levels of contaminant. The aim of the research were to find out the most effective treatment using phytoremediation approach with Pistia and Salvinia and to study the influence of treatment on lettuce growth. The research consists of initial the research and main research. The initial research begin with determined waste concentration and biomass water plant used, while main managed greywater with circulation system using remediation vessel and water plant as phytoremediator. These research were designed according to Complete Randomized Factorial Experimental Design (SK = 95%) with two factors including remediation vessel (B1 and B2) and water plant (Control, Pistia and Salvinia), which every treatment were repeated for three times. The research result showed chemical characteristic that is Chemical Oxygen Demand (COD) were exceed standard quality of level waste. COD level significantly decrease (P<0,05) at 0 and 1 weeks after planting tend (WAP) by water plant treatment, while COD level at 3 WAP significantly decrease by remediation vessel. Phosphorus level significantly decrease at 0, 2 and 3 WAP by remediation vessel, while nitrate level significantly decrease at 1 WAP by water plant treatment, remediation vessel and both of combination. Pistia treatment more effective than Salvinia to recycling water quality. Phosphorous and nitrate level content in effluent 1 were low than nutrient requirement for normal lettuce growth on hydroponic system. Deficiency element nutrient for lettuce make it low weight of harvested and has caused died level of lettuce at the research were approximately 32%.
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Judul: Aplikasi Salvinia molesta dan Pistia stratiotes sebagai Agen Bioremediasi untuk Memperbaiki Kualitas Perairan Danau Ebony Jakarta Utara
Abstrak: The Polder System of Ebony Lake receive water from household drainase and run-off input, Ebony Lake has high turbidity and bad odor, it indicated the occurrence of organic matter pollution. The purpose of this study was to examine changes in water of Ebony Lake through bioremediation procces by Salvinia molesta and Pistia stratiotes. The main parameters were COD, ammonia, nitrite, nitrate, sulfide, orthophosphate, and turbidity. Based on the results of the study, it was found that a decline in the value of COD, ammonia, nitrite, nitrate, orthophosphate, sulfide, and turbidity. However, the decrease was not different in the control treatment. This is presumably due to other factors, namely bacteria or microorganisms that decompose organic matter. Decomposition results in the form of inorganic nutrients and water used by plant for growth. This is evident from the increased extent of the closure and the water plant biomass.
Keyword: Salvinia molesta, Pistia stratiotes, water quality, organic material, bioremediation

Judul: Sifat Kemonotonan pada Darboux Sums
Abstrak: Darboux sums untuk fungsi di , - terbagi menjadi dua yaitu, upper Darboux sum dan lower Darboux sum. Untuk setiap partisi yang membagi interval , - menjadi subinterval dengan jarak yang sama, dibentuk suatu pendekatan dari nilai integral atau luas di bawah kurva yakni, upper Darboux sum ( ) yang mendekati dari atas kurva dan lower Darboux sum ( ) yang mendekati dari bawah kurva Tujuan penelitian ini adalah menunjukkan kemonotonan pada barisan { ( )} dan { ( )} tidak umum terjadi di , -. Setiap di , - dapat dihampiri oleh fungsi linear sesepenggal di , - sehingga barisan lower Darboux sum { ( )} dan upper Darboux sum { ( )} dari secara umum, berturut-turut tidak monoton turun dan naik. Tetapi, ekor barisan { ( )} dan { ( )} dari berturut-turut bersifat monoton turun dan naik. Kemudian, untuk kasus monoton naik di , -, sifat di atas juga berlaku untuk yang juga monoton naik. Demikian pula halnya bila monoton turun yang dihampiri oleh yang juga monoton turun.
Keyword: Darboux sums, kategori Baire, kemonotonan