Judul: Perbandingan Profil Kelahiran Antara Panthera tigris sumatrae (Pocock 1929) Dengan Panthera tigris altaica (Temminck 1848) Di Habitat Ex-Situ
Abstrak: Sumatran tiger is the remaining subspecies of tiger in Indonesia and classified in Appendix I at CITES. Another subspecies of the tiger is Panthera tigris altaica, known as Siberian tiger. Those 2 subspecies were origin from Panthera tigris which has divergenced and separated into several subspecies. The research aims to compare the birth profile between Sumatran tiger and Siberian tiger in ex-situ habitat. This research used secondary data compiled from International Tiger Studbook in the period of 1984 to 2003. The results show that the litter size of Sumatran tiger significantly different from Siberian tiger (nSumateran tiger=180, average=2,21; nSiberia tiger=220, average=2,36). This indicates some difference in reproductive capability between those tigers which may be affected by climate and food composition and availability. Data on natality does not show existing seasonal reproduction pattern in Sumatran tiger as those in Siberian tiger. Both Sumatran tiger and Siberian tiger have same potential of reproduction, i.e. maximum of 12 birth through the entire dam’s life.
Keyword: 

Judul: Studi Terhadap Komponen Daya Dukung Harimau Sumatera (Panthera tigris sumatrae, Pocock 1929) di SPTN IV Painan dan SPTN II Merangin-Bungo, Taman Nasional Kerinci Seblat
Abstrak: As the top predator, tigers need the existence of prey. Without prey, tigers can become extinct, and if so the food chain balance will be disturbed. The function of habitat is to provide food, water and cover. Food is a main factor that supports the Sumatran tiger’s life. Water is needed because tigers cannot stand the heat. Cover is used for protection, a hunting place, shelter and reproduction. This research is done on July-December 2008 at National Park Management Section (SPTN) IV Painan, Pesisir Selatan Residence, West Sumatra and National Park Management Section (SPTN) II, Merangin-Bungo, Jangkat Residence, Jambi. Line transect method is used to take data in four strips (strip I, II, III, and IV), with average of strip length is 4,86 kilometres (strip I); 5,24 kilometres (strip II); 2,05 kilometres (strip III); and 4,70 kilometres (strip IV). All strips is on animal active strip from type of range of hills forest to type of mountain forest. Based from type of its habitat, the highest estimation of tiger density is on strip II and I with density value 1,30 ind/100 km2 and 1,20 ind/100 km2. For the lowest estimation of tiger density is on strip III and IV with density value 0,7 ind/100 km2 and 1,00 ind/100 km2. The highest value of tiger relative abundance is on strip III (2,08 footprints/km) and the lowest value is on strip IV (0,085 footprints/km). Tigers prefer to prey on sambar deer (Cervus unicolor), red muntjac (Muntiacus muntjak), wildboar (Sus sp), and serrow (Capriconus sumatrensis). Other potential animals found during the research are: Sunbear (Helarctos malayanus), ajag (Cuon alpinus), great argus (argusianus argus), siamang (Hylobates syndactillus), banded langur (Presbytis melalophos), agile gibbon (Hylobates agilis), giant squirrel (Ratufa affinis) and common porcupine (Hystrix brachyura). The vegetation is the main cover because they provide canopy for tigers who cannot stand the heat. Based on the function, there are three types of vegetation, which are overstory, understory, dan ground cover. The water sources in Kawasan Taman Nasional Kerinci Seblat (TNKS) are both stand-water and run-water. In each location, there are big flowing rivers. The research location has high carrying capacity for tigers. However, the research location also has high threats and intervention against tigers and their habitat, increasing chances of their extinction in the research location and the wild.
Keyword: 

Judul: Electrochemical Sensor Based on Graphene Oxide/PEDOT:PSS Decorated with AuAg Nanozyme for H2O2 Detection
Abstrak: H2O2 merupakan senyawa penanda hayati keadaan stres oksidatif tubuh sehingga diperlukan metode deteksi H2O2 yang cepat dan akurat. Sensor elektrokimia berbasis nanozyme peroksidase, seperti Au-NPs dan Ag-NPs, menawarkan alternatif metode deteksi yang menjanjikan karena ukuran alat yang kecil, kinerja analitik yang lebih baik, dan efisien biaya. Penelitian ini bertujuan mengembangkan sensor elektrokimia non-enzimatik menggunakan nanopartikel bimetal AuAg pada elektrode karbon kaca yang dimodifikasi dengan komposit grafena oksida dan poli(3,4-etilenadioksitiofena)-poli(stirena-4-sulfonat). Elektrode termodifikasi bimetal AuAg-NPs menunjukkan respons pada H2O2 yang lebih tinggi daripada elektrode termodifikasi monologamnya, dengan respons linear dalam rentang konsentrasi H2O2 75–200 µM, sensitivitas 0,0407 μA μM-1, dan limit deteksi mencapai 25 μM. Elektrode hasil modifikasi menunjukkan keterulangan pengukuran yang baik dan selektif terhadap H2O2. Elektrode yang dimodifikasi berhasil digunakan untuk mengukur kadar H2O2 dalam sampel urine sintetis serta memberikan hasil yang tidak berbeda nyata dengan metode spektrofotometri.
Keyword: AuAg-NPs, electrochemical sensor, graphene oxide, H2O2, PEDOT:PSS