Judul: Level of Traditional Knowledge and Language Vitality Gayo Lut in Central Aceh
Abstrak: Pengetahuan tradisional masyarakat Gayo Lut sangat penting dalam upaya pelestarian keanekaragaman hayati. Pengetahuan diwariskan melalui bahasa sebagai media komunikasi yang menyimpan kekayaan pengetahuan dan cara dalam mengelola keanekaragaman hayati, oleh karena itu menjadi penting untuk diukur. Penelitian ini bertujuan untuk: (1) mengukur tingkat pengetahuan tradisional dan vitalitas bahasa Gayo Lut, dan (2) mengidentifikasi faktor pembatas terhadap tingkat pengetahuan tradisional dan vitalitas bahasa Gayo Lut. Pengumpulan data dilakukan dengan wawancara secara purposive sampling menggunakan TraLavi (Traditional Knowledge and Language Vitality Index) yang berfokus pada tumbuhan pangan. Kriteria yang digunakan yaitu prioritas bahasa (A), pengambilan informasi (B), erosi pengetahuan tradisional (C), pengenalan visual (D), dan pewarisan pengetahuan tradisional (E). Hasil penelitian menunjukkan bahwa dengan skor TraLaVi sebesar 0,85 yang berarti bahasa Gayo Lut termasuk pada status aman. Faktor pembatas tingkat pengetahuan tradisional dan vitalitas bahasa Gayo Lut yaitu usia (p-value 0,001) dan status menikah (p-value 0,006) berpengaruh secara signifikan. Perbedaan usia dapat memengaruhi tingkat pengetahuan tradisional dan vitalitas bahasa Gayo Lut, sedangkan status menikah yang sesama Gayo Lut mampu memengaruhi keberlanjutan bahasa., Traditional knowledge of the Gayo Lut community is very important in efforts to conserve biodiversity. Knowledge transmission through language as a communication tool that stores a assests of knowledge and method to manage biodiversity, therefore it is important to measure. This study aims to: (1) measure the level of traditional knowledge and vitality of the language Gayo Lut, and (2) identify the limiting factors of traditional knowledge and language vitality Gayo Lut. Data were collected by interview in purposive sampling using TraLaVi (Traditional Knowledge and Language Vitality Index) which focuses on food plants. The criteria used are language priority (A), retrieval of information (B), traditional knowledge erosion (C), visual recognition (D), and traditional knowledge transmission (E). The results a TraLavi score of 0,85 meaning that the Gayo Lut language is included in the safe status. Limiting factors in level of traditional knowledge and language vitality Gayo Lut such as age (p-value 0,001) and marital status (p-value 0,006) had a significant effect. Differences in age can affect the level of traditional knowledge and language vitality Gayo Lut, while the marital status of the same Gayo Lut can affect the sustainability of the language.
Keyword: ethnotaxonomy, language vitality, traditional knowledge

Judul: The Influence of Urbanization on Gayo-Lut Traditional Knowledge and Biodiversity conservation through Culinary-Based Ecotourism
Abstrak: The wealth of natural resources can be utilized to support food security through the production of food, increased income access, and safe-sanitary food preparation. The utilization of food plants is reflected in the community’s traditional knowledge of how they were used, protected, and preserved for a long time as a cultural custom in traditional cuisines. One of the great challenges to sustaining the sustainability of food plants is urbanization and modern lifestyle. Several studies have found that the process of becoming more urban has a negative impact on natural resource knowledge and that urbanization is related to the loss of the ability to recognize and understand plants. A strategy that can be used to enhance biodiversity and sustain ecosystem service is the combination of traditional knowledge and culture which can be seen in their traditional cuisines. Unfortunately, there is more traditional knowledge that is passed down in oral form through stories, experiences, and language than stored documentation. This could potentially lead to knowledge loss if people start not knowing their food plants because of the difficulty in adapting to food plants in new places. This research was conducted on the Gayo Lut community in two locations to see the effect of urbanization. The first group was in Mude Nosar Village, Central Aceh in November-December 2020, and the second group was in the Gayo community, Musara Gayo in the Jakarta-Bogor-Depok-Tangerang-Bekasi (Jabodetabek) area in March-April 2021. The next research respondents grouped more specifically, namely the elder group (>59 years in Mude Nosar Village; 16 respondents), rural (<60 years in Mude Nosar Village; 16 respondents), and urban (<60 years in Jabodetabek; 16 respondents). Data collection was carried out in 2 stages. The first stage is an interview using the freelisting technique, and a semi-structured interview to identify the traditional knowledge of food plants, traditional cuisines, and details regarding their utilization. Then the second stage is a field study that aims to map the coordinate distribution of food plants and tourist objects. Freelisting data were analyzed using Anthropac and the Jaccard index to see species diversity and the effect of urbanization. Then analyzed descriptively. The coordinate data for the distribution of food plants and the distribution of tourist objects that have been obtained are mapped using ArcMap to see their distribution. The results of the study found that urbanization affected the community's traditional knowledge. This can be seen from the differences in the types of important food plants between each group due to adaptation to changing times and location of residence. But on the other hand, urbanization also offers a modification of traditional knowledge in traditional cooking which still maintains the authenticity of the distinctive taste of dishes. The adaptation is done with add up or substitution ingredients which easier to find in Jabodetabek. In three communities studied, recorded 188 species (elder 120 species; rural 116 species; urban 124 Species) of food plants are used by the community. For elder and rural groups, lasun ilang (Allium cepa) being the most important species because it is a major economic source besides coffee and rice. Then, there is
Keyword: culinary-based ecotourism, food plant, Gayo Lut, traditional cuisine, traditional knowledge

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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