Judul: Etnobotani Jelutung (Dyera Costulata (Miq.) Hook F. Dan Dyera Polyphylla (Miq.) Steenis) Suku Anak Dalam Dan Potensinya Di Bukit Duabelas Jambi.
Abstrak: Jelutung merupakan salah satu jenis penting bernilai ekonomi dan sosial. Status IUCN termasuk kategori LC (least consent) tetapi, populasinya terus berkurang signifikan sehingga perlu dilakukan upaya konservasi jenis. Saat ini usaha konservasi belum mempertimbangkan aspek budaya masyarakat setempat (etnobotani), sehingga perlu dilakukan kajian lebih mendalam terkait aspek etnobotani jelutung secara khusus. Penelitian ini bertujuan untuk: 1) mengidentifikasi etnobotani jelutung oleh Suku Anak Dalam (SAD); 2) mengetahui potensi populasi jelutung melalui pengenalan struktur dan komposisi vegetasi sekitar jelutung pada lokasi pemanfaatan SAD di Taman Nasional Bukit Duabelas (TNBD); dan 3) observasi tata niaga tradisional dan rantai nilai jelutung. Metode penelitian dilakukan secara multidisiplin yang mencakup: 1) Kajian etnobotani melalui metode diskusi kelompok terfokus, wawancara mendalam dan observasi langsung pada 40 responden yang dipilih secara purposive sampling; 2) Analisis vegetasi dengan metode sensus pada petak contoh ukuran 60 m x 60 m sebanyak 8 buah di lokasi ditemukan jelutung yang meliputi hutan rawa (HR), hutan dataran rendah (daratan) (HD), kebun campuran karet (CK) dan kebun campuran sawit (CS); 3) Uji fitokimia getah jelutung dengan teknik analisis visualisasi warna dan uji toksisitas getah jelutung dengan metode larva udang (brine shrimp lethal test) dilakukan di laboratorium Pusat Biofarmaka Tropika IPB. Hasil penelitian menunjukkan 1) Pengetahuan SAD tentang jelutung meliputi pengetahuan mengenai jenis, tempat tumbuh, pemanfaatan getah dan kulit buah keringnya untuk barang komoditi dan obat. Dan pengetahuan mengenai pemanenan dan pengolahan getah, serta kepercayaan adat bahwa jelutung tidak boleh diganggu kecuali untuk dimanfaatkan; 2) Struktur populasi jelutung di TNBD menunjukkan kondisi terganggu yaitu kerapatan permudaan jelutung (semai, pancang) lebih sedikit ditemukan daripada jelutung dewasa (tiang, pohon); Pada lokasi HD kerapatan jelutung tingkat semai 1 individu per hektar (ind./ha), dan pohon 4 ind./ha; pada HR tingkat pancang, tiang dan pohon berturut-turut 6 ind./ha, 3 ind./ha, dan 6 ind./ha. Pada kebun campuran karet dan sawit hanya tingkat pohon dengan kerapatan 4 ind./ha dan 3 ind./ha. 3) Getah jelutung mengandung triterpenoid berpotensi untuk dilakukan uji lanjutan antibakteri. Implikasi hasil riset ke depan adalah harapan terwujudnya konservasi jelutung dan terbukanya pasar getah jelutung. Pendekatan-pendekatan baru untuk konservasi ke depan berupa pengelolaan adaptif yaitu pengelolaan kawasan konservasi yang melibatkan masyarakat lokal sebagai pelaku utama seperti monitoring kawasan perlu diwujudkan. Perlu pengawalan inovasi teknologi informasi untuk mendukung pemasaran produk masyarakat lokal seperti olahan getah jelutung sehingga dapat memutus rantai perdagangan yang panjang.
Keyword: Bioprospeksi, Dyera spp., etnobotani, fitokimia, konservasi, pemasaran, rantai nilai, Suku Anak Dalam

Judul: Struktur, Komposisi, Sebaran dan Potensi Jelutung Rawa (Dyera lowii.) dan Jelutung Darat (Dyera costulata.) di Tanjung Jabung Timur, Jambi.
Abstrak: The existence of Jelutung is still in question, especially in Jambi, where two species, swamp and land jelutungs are found. The aim of this study was to determine the structure, composition, distribution and potential of both jelutung species (Dyera spp.) in their natural habitat in Jambi. The study was done using the combination of line transects and square plots in 1 ha plot size located in protected peatland forests in Sungai Beras village, secondary forest in Lagan Ulu village and rubber forest plantation in Catur Rahayu village. Total of 2.219 trees, measured, there were 97 species from 68 genera and 38 families were identified in which the most dominant species were rubber, dryland jelutung, pulai, swamp jelutung and lanang tree. The Shannon-Wiener diversity index (H’) values of trees at anystage of growth were about 0-2.76, which were classified as low to mid level of diversity. Understorey plants had H’ value of about 0.49-2.76, which were classified as low to mid level of diversity. The distribution patterns of both jelutung species were in clustered and evenly. The highest potential of jelutung volume was found in Lagan Ulu with average value of 60.45 m³ha-1, followed by Catur Rahayu forests with average volume of 33.53 m³ha-1 and Sungai Beras with 27.35 m³ha-1. Conservation and future utilization of jelutung need to consider their ecological data.
Keyword: Dyera lowii, Dyera costulata, Jambi, Conservation

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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