Judul: Penambahan Template Kitosan dan Albumin pada Sintesis Nanosilika Abu Ketel Industri Gula dengan Metode Kopresipitasi.
Abstrak: Nanosilica has many potential application in widely sectors. Boiler ash has contains silica that synthesized using precipitation method. Templating was modification process from precipitation method. The objective of this research was to synthesis nanosilica with template from boiler ash using precipitation method, determine the effect of chitosan and albumin templates on the characterization of nanosilica, determine the potential application based on characterization of nanosilica. This research consist of several stages, preparation of boiler ash, silica extraction, synthesis of nanosilica, testing of material, testing and characterization of nanosilica, and analyze of data. Boiler ash contained 49.69% silica and furnace ash contained 78.75% silica. Increasing concentration of chitosan and albumin templates was decrease amount of diffraction peak, diffraction peak intensity, decrease average of crystal size, narrow of crystal size distribution, and narrow of particle size distribution (PDI) curve. Degree of crystallinity nanosilica with chitosan template has ranges 34.40-54.69% and with albumin template has ranges 39.33-68.79%. Crystal size nanosilica has ranges 35.87-61.57 nm. Particle size nanosilica has ranges 228.39-1369.23 nm. PDI value nanosilica has ranges 0.09-0.297. Nanosilica has potential application as compose top layer of ultrafiltration membrane, compose porous support of ultrafiltration membrane, and support component of catalyst.
Keyword: albumin, boiler ash, chitosan, nanosilica, precipitation

Judul: Sintesis dan Pencirian Nanosilika Berbahan Dasar Abu Ketel Industri Gula dengan Variasi Waktu Aging dan pH Presipitasi.
Abstrak: Boiler ash from sugar cane industry contains silica that was synthesized to nanosilica using precipitation method. Precipitation pH and aging time are parameters that have influenced to nanosilica characterization. The purpose of this research was to synthesis nanosilica from boiler ash using precipitation method, determine the effect of precipitation pH and aging time variation on the characterization of nanosilica, determine the potential application based on characterization of nanosilica. The research was consist of three stages, preparation of boiler ash, extraction silica from furnace ash, and synthesis nanosilica. Boiler ash from sugar cane industry contained 49.69% silica and furnace ash contained 78.75% silica. Nanosilica was material or compound that have multifase characterization. Increase precipitation pH would increase amount of crystal phase, diffraction peak, and intensity of diffraction peak. Increase aging time would increase intensity of diffraction peak and amount of crystal phase. Degree of crystallinity has ranges 66.397–93.530%, average of crystal size has ranges 37.772–56.867 nm, average of particle size has ranges 214.04–698.24 nm, and PDI value has ranges 0.207–0.833. Increase precipitation pH and aging time would increase amount of siloksane groups and decrease amount of silanol groups. Nanosilica has potential application as a composit of electrolyte membrane DMFC (Direct Methanol Fuel Cell), composit of addition support layer membrane ultrafiltration, filler in ship rubber air bag, filler of composit resin, and SCM (Supplementary Cementitious Material) for concrete.
Keyword: aging time, boiler ash, nanosilica, precipitation, precipitation pH

Judul: Ekologi merak hijau jawa (Pavo muticus muticus) Linnaeus 1758 pada beberapa tipe habitat di Ujung Timur Penyebarannya Jawa Timur, Indonesia
Abstrak: Merak hijau jawa merupakan salah satu jenis burung yang dilindungi.di Indonesia berdasarkan SK Mentan No 66/Kpts/Um/2/1973 dan Peraturan Pemerintah Republik Indonesia No 7 tahun 1999. Menurut ICBP (The International Council for Bird Preservation) merak hijau sebagai jenis burung yang tergolong terancam secara keseluruhan (globally threatened) baik populasi maupun habitatnya, sedangkan CITES mencantumkan merak hijau ke dalam Appendix II, merak hijau dari alam tidak bisa langsung diperdagangkan dan BirdLife International (2007) memasukkan golongan burung yang endangered. Tekanan terhadap populasi dan habitat merak hijau jawa sangat besar, sehingga kondisi populasinya menurun pada setiap penyebaran lokalnya, habitatnya terfragmentasi bahkan terisolasi. Tekanan terhadap populasi terutama karena perburuan liar. Namun demikian fakta menunjukan bahwa merak hijau jawa masih ada (exist), hal ini memberikan gambaran bahwa burung ini tentunya memiliki strategi ekologi tertentu untuk tetap bertahan hidup di alam pada berbagai tipe habitat.
Keyword: Pavo muticus muticus, Call count transect method, Pavo cristatus, Pavo muticus, Pavo muticus spicifer, Pavo muticus imperator, Pavo muticus muticus, Javan Green Peafowl, East Java