Judul: The Effect of Changes in Agrarian Structure Due to Agricultural Land Conversion on Welfare Levels of Urban Farmers
Abstrak: Land as an agrarian resource has an important role in human life. Humans use land to fulfill various aspects of their lives, such as economic, socio-cultural, and security. Nowadays, the growth of the urban population (urbanization) encourages land conversion activities that make changes in the agrarian structure of urban farmers. This study aims to identify changes in agrarian structure due to conversion of agricultural land, identify various livelihood strategies carried out by farmers, and their effects on the level of welfare of farmers' households. The results of the study using simple linear regression analysis showed that changes in agrarian structure had a significant effect on the level of welfare of farmers' households. The livelihood strategy as a moderating variable in this study strengthens the effect of changes in agrarian structure due to agricultural land conversion on the level of welfare of farmer households. The variety of livelihood strategies pursued by farmer households after the change in agrarian structure is dominated by engineering strategies for agricultural livelihoods and other distributions of dual livelihood patterns and migration.
Keyword: agrarian structure, livelihood strategy, welfare

Judul: Pengaruh Konversi Lahan Terhadap Livelihood Asset dan Strategi Nafkah Rumah Tangga Buruh Tani.
Abstrak: Land conversion is land use change from agricultural (sector) to nonagricultural (sector). Land conversion that occurred in the Cimanggu Satu village caused work patterns change, revenue change levels, undertaken land area change, and income change. The impact of land conversion will affect the livelihood strategies that hodge attitude. Livelihood strategies applied by hodge household not only in the agricultural sector but also on non-agricultural sector. The application of livelihood strategies was conducted on the engineering of agricultural livelihoods, double livelihood patterns and spatial engineering (migration). Form of livelihood strategies that conducted are affected by the livelihood utilization of hodge household. Livelihoods consists of the utilization of human capital, natural capital, physical capital, financial capital and social capital.
Keyword: Livelihood Strategies, Livelihood Asset, land conversion

Judul: Natural Pearlescent Pigment Dari Kristal Guanin Sisik Ikan Bandeng (Chanos Chanos)
Abstrak: Pearlescent pigment yang dikenal dengan nama pearl essence atau fish silver merupakan pigmen berwarna keperakan yang memiliki kenampakan seperti mutiara. Natural pearlescent pigment diperoleh dari sisik ikan dengan kandungan guanin 75-97%, dan kini mulai banyak digunakan pada industri personal care dan produk kosmetika. Penelitian ini bertujuan untuk menentukan teknologi ekstraksi natural pearlescent pigment dan karakteristik kualitatif kristal guanin pada sisik ikan bandeng (Chanos chanos). Perlakuan dalam penelitian ini meliputi ekstraksi menggunakan air deionisasi dengan sisik yang dibekukan terlebih dahulu, air deionisasi 10 οC, dimetil sulfoksida 15%, dan 25% (v/v). Hasil spektrum absorbansi UV-Vis menunjukkan kristal guanin merupakan pigmen berwarna putih berdasarkan serapan pada panjang gelombang 200-800 nm. Hasil terbaik diperoleh pada ekstraksi menggunakan air deionisasi dengan sisik beku nilai kristalinitas 68,4%, serapan gugus amina pada 3410 cm-1 dan gugus amida pada1681 cm-1, puncak intensitas 2θ pada sudut 27,7° yang menunjukan identitas dari kristal guanin anhidrat. Tingkat kandungan guanin sebesar 0,0455 ± 0,0033 g (0,46%).
Keyword: Dimetil sulfoksida, guanin, kosmetik, kristalinitas, pearlescent pigment