Judul: Evaluasi karakter agronomi dan analisis kekerabatan 10 genotipe lokal kacang Hijau (Vigna radiata L. Wilczek)
Abstrak: One kind of Indonesian important Leguminosae is mungbean (Vigna radiata L. Wilczek). The difference of time harvesting become a serious problem in mungbean cultivation because it needs more labour and time consuming. The objective of this research are evaluating agronomical characteristic of 10 indigenous mungbean genotypes and analyzing genetic distance between those genotypes, based on quantitative and qualitative characteristics. The experiment was carried out at Leuwikopo Experimental Field, Bogor Argricultural University, Dramaga, Bogoron April to August 2013. Design of experiment that use in this research was random block design with one factor that consist of 10genotypes indigenous mungbean and one national variety as controlin three replication. The result showed thatall genotypes were significantly different ingrowth component, plant age component, and production component as contrast. LL3 genotypefound as the best variability (based on production component, plant age component, and synchronized time harvestingcomponent), followed by LL4, LWL, and LKH. Analysis of genetic distance resulted four groups based on quantitative characters and three groups based on qualitative characters by all genotypes.
Keyword: unison harvest, mungbean, genetic distance, agronomy’s characte

Judul: Evaluation of Agronomic Character and  Potential of Bean Sprouts of Several IPB Mung Bean Lines IPB in Dry Land and  Rice Fields
Abstrak: Kacang hijau (Vigna radiata L.) merupakan tanaman legum urutan ketiga terpenting di Indonesia. Kecambah kacang hijau (taoge) memiliki protein tinggi. Penelitian ini bertujuan mengevaluasi karakter agronomi dan potensi taoge galur kacang hijau IPB yang ditanam di lahan kering dan lahan sawah serta mempelajari pengaruh faktor interaksi genotipe dan lingkungan terhadap karakter agronomi dan potensi taoge. Penelitian dilaksanakan pada bulan November 2023 sampai Februari 2024 di Kebun Percobaan Leuwikopo, Kebun Percobaan Sawah Baru IPB dan Laboratorium Pemuliaan Tanaman, Departemen Agronomi dan Hortikultura. Penelitian ini menguji 12 galur kacang hijau IPB dan dua varietas nasional (Vima 5 dan Vimil 1), menggunakan rancangan kelompok lengkap teracak pola tersarang dengan dua faktor, faktor pertama galur kacang hijau dan faktor kedua lingkungan (lahan kering dan sawah). Masing-masing faktor terdiri atas tiga ulangan sehingga terdapat 84 satuan percobaan. Hasil penelitian menunjukkan karakter yang memiliki ragam galat tidak berbeda nyata yaitu panjang infloresens, bobot 100 butir biji, bobot basah per taoge, dan bobot basah taoge per 100 g biji. Lingkungan penanaman kacang hijau yaitu lahan kering dan sawah tidak berbeda nyata pada karakter panjang infloresens dan bobot basah per taoge. Interaksi perlakuan genotipe dan lingkungan penanaman berbeda nyata pada karakter bobot 100 butir biji, bobot basah per taoge, bobot basah total taoge per 100 g biji dan tidak berbeda nyata pada karakter panjang infloresens. Genotipe F9-Lom2/129-42 dan F9-VR10/V1-29 memiliki keragaan karakter komponen hasil yang lebih baik dari genotipe lain. Genotipe F9-VR480B/-82 memiliki keragaan potensi produksi taoge yang lebih baik dari genotipe lain., Mung bean (Vigna radiata L.) are the third most important legume crop in Indonesia. Mung bean sprouts have high protein. This research aimed to evaluate the agronomic characteristics and potential of sprouts of IPB mung bean lines planted in dry land and rice fields and study the influence of genotype and environmental interaction factors on the agronomic character and potential of bean sprouts. The research was conducted from November 2023 to February 2024 at the Leuwikopo Experimental Garden, Sawah Baru IPB Experimental Garden and the Plant Breeding Laboratory, Department of Agronomy and Horticulture. This study tested 12 IPB mung bean lines and two national varieties (Vima 5 and Vimil 1), using a randomized complete block design with a nested pattern with two factors, the first factor being mung bean lines and the second factor environment (dry land and rice field). Each factor consists of three replications so there are 84 experimental units. The results showed that the characters that had various errors were not significantly different are inflorescence length, weight of 100 seeds, wet weight per bean sprout, and wet weight of bean sprouts per 100 g of seed. The mung bean planting environment (dry land and rice fields) did not have a significant difference on the characteristics of inflorescence length and wet weight per bean sprout. The interaction of genotype treatment and planting environment had a significant difference on the weight of 100 seeds, wet weight per bean sprout, total wet weight of bean sprouts per 100 g of seeds and had no significant difference on the character of inflorescence length. The genotypes F9-Lom2/129-42 and F9-VR10/V1-29
Keyword: korelasi, tersarang, kluster, potensi hasil

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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