Judul: Pemetaan kesesuaian habitat Rafflesia zollingeriana Kds: studi kasus di Resort Sukamade Wilayah Seksi I Sarongan Taman Nasional Meru Betiri Jawa Timur
Abstrak: The natural habitat of Rafflesia zollingeriana Kds is in Meru Betiri National Park (TNMB). Rafflesia zollingeriana Kds breeding habitat is determined by several factors such as: host plants, vegetation types, animal pollinators and seed dispersal, climate, wind, soil, topography and human activity and the manager (Zuhud et al. 1998). Based on these factors, the habitat models of Rafflesia zollingeriana Kds can be developed in order to measure the level of habitat suitability in the Meru Betiri National Park. Data collection was conducted at the Resort Sukamade SPTN I Meru Betiri National Park during December 2009 - January 2010. Furthermore, the data processing was conducted in June 2010 until February 2011. This study used six physical variables: altitude, slope, distant from river, soil, rainfall, and Normalized Difference Vegetation Index (NDVI). The map processing has been done using Erdas Imagine 9.1 and ArcGIS 9.3, whereas the attribute tables were processed using Microsoft Excel 2007 and SPSS 19.0. The Principal Component Analysis (PCA) was used for determining the weight of the model. Based on Principal Component Analysis, there are 3 main components with eigen value of 2.025, 1.635 and 1.019. The physical variables that have most influence on habitat suitability model are rainfall and NDVI. The habitat model of R. zollingeriana follows: Y = (1.019 × distance from river) + (2.025 × NDVI) + (1.635 × height) + (1.019 × slope) + (1.635 × soil group) + (2.025 × rainfall). Habitat suitability map is divided into 3 classes: high suitability, medium suitability and low suitability. The area of high suitability habitat is 6131.8 ha, medium suitability habitat is 2883.88 ha, and low suitability habitat is 139.418 Ha. Habitat suitability maps can be accepted by the validation value 60% for high suitability class.
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Judul: Konservasi Rafflesia zollingeriana Koord di Taman Nasional Meru Betiri, Jawa Timur.
Abstrak: Rafflesia zollingeriana Koord is a protected rare plants in Indonesia, according to Government Regulation No. 7 of 1999. This species is endemic to Meru Betiri National Park. However, reality shows that R. zollingeriana population in the national park was declining. Because there are a lot of scientific information that has not known yet, R. zollingeriana population must been saved, more effective and efficient conservation must be done immediately. To be able to formulate effective and efficient conservation strategies, information about: the condition of the population; utilization; stakeholders involved; strengths, weaknesses, opportunities and threats of R. zollingeriana conservation; must be known. Therefore, the study aimed to analyze the population condition R. zollingeriana in the national park; analyze the utilization of R. zollingeriana; identify the stakeholders involved in R. zollingeriana’s conservation; analyze the strengths, weaknesses, opportunities and threats of R. zollingeriana conservation at this time; recommended some strategies and conservation programs of R. zollingeriana. The study was conducted in the Meru Betiri National Park and five villages around it (Wonoasri, Curahnongko, Andongrejo, Sanenrejo and Sarongan). Research conducted over the 15 months, from May 2012 to July 2013. Data were collected by interviews, surveys, observations, and literature study. Data that collected were: data of R. zollingeriana population condition, data of the utilization and data about management of R. zollingeriana conservation. Those data analyzed descriptively, quantitatively and qualitatively. Observations were done in 19 plots and there were 26 sub populations of R. zollingeriana that have been found. The mortality rate of knobs was high enough and blooming success rate for knobs was low, so propagation researches are need to be done. From 19 plots, 9 of them are recently documented populations. R. zollingeriana was utilized for herbal medicine (through knobs collecting and trading) and for tourism. The impact of collecting and trading activity R. zollingeriana were increasing income and welfare of the culprit but decline and extinction of Rafflesia in the other hand. Another forms of utilization was ecotourism of R. zollingeriana. Ecotourism has not developed yet and has not given a significant economical benefit for people. There were 12 stakeholder involved in protection, 9 stakeholder involved in preservation dan 20 stakeholder involved in utilization. Protection stakeholder consist of 2 key player stakeholder, 1 context setter, 1 subject dan 8 crowd. Preservation stakeholder consist of 3 key player stakeholder, 1 context setter, 1 subject dan 4 crowd. Utilization stakeholder consist of 7 key player stakeholder, 4 subject dan 9 crowd stakeholder. SWOT analysis indicated that the value of internal and external factors were positive. The internal factors for conservation of R. zollingeriana have greater value than the external factors. Value for strength was 1.8, weakness was 0.95, opportunity was 1.6 dan threat was 0.6. Recommended strategies was aggressive strategy: maximize the strengths so that the opportunities can be exploited as much as possible. So cooperation with and among the key player stakeholder, communication with context setter stakeholder and empowerment of subject stakeholder must be enhanced. The proposed program were stakeholder empowerment, stakeholder base of R. zollingeriana ecotourism and zonation based of conservation management.
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Judul: Penyalutan Nanotube Paduan Logam Ti6Al4V dengan Komposit Hidroksiapatit-Gelatin-Polivinil Alkohol Menggunakan Metode Dip-Coating.
Abstrak: Paduan logam Ti6Al4V digunakan sebagai bahan implan karena sifatnya kuat, ringan, dan tahan korosi. Permukaan paduan logam perlu dimodifikasi untuk meningkatkan ketahanan terhadap korosi. Penelitian ini bertujuan memodifikasi permukaan paduan logam Ti6Al4V membentuk struktur nanotube serta menyalutkan komposit hidroksiapatit(HAp)-gelatin-PVA pada paduan logam Ti6Al4V. Nanotube dibentuk melalui metode anodisasi dalam larutan etilena glikol-H2O (9:1) yang mengandung NH4F 0.6% pada tegangan 20 V selama 3 jam. Hasil pencirian mikroskop elektron payaran menunjukkan diameter lubang nanotube sekitar 30−40 nm dan terbentuk secara homogen. Hasil penyalutan paduan logam nanotube merata dan lebih tebal. Morfologi komposit penyalut berbentuk granula kecil yang homogen. Difraksi sinar-X menunjukkan bahwa ukuran kristal komposit HAp-gelatin-PVA yang tersalut pada paduan logam nanotube lebih kecil dibandingkan dengan non-nanotube. Nanotube paduan logam Ti6Al4V yang tersalut dengan komposit HAp-gelatin-PVA memiliki bioaktivitas yang kurang baik sehingga belum dapat meningkatkan ketahanan korosi paduan logam Ti6Al4V.
Keyword: anodisasi, gelatin, hidroksiapatit, nanotube, Ti6Al4V