Judul: Pengelolaan Gulma Kelapa Sawit (Elaeis guineensis Jacq.) di Angsana Estate PT Ladangrumpun Suburabadi Minamas Plantation Kalimantan Selatan
Abstrak: The objective of this apprentice was to improve student’s competance on technical and managerial skill. The apprentice was conducted at Angsana Estate PT Ladangrumpun Suburabadi Minamas Plantation,South Kalimantan from February to June 2011. The method used was direct and indirect. Directly method was performed the steps as field worker, foreman and division assistant. Indirect method to collect and plantation reports. There were two methods on weed control according to weed problem at site, first inter-row and second circle weeding. The vegetation analysis result showed that broadleaves weed species dominance at field. Coefficient weed comunity less than 75% so variable of weed community were not homogen. Weed control in Angsana Estate consisted of manual and chemical control. Manual control performed on young (immature) and productive if rainy weather. Chemical control using systemic herbicides. The use of herbicides was done in accordance with principles and criteria for sustainable palm oil. Chemical weed control in Angsana Estate (ASE) was organized called the Block Spraying System (BSS). Not all weeds were eradicated, some weed species have been maintain for a specific purpose (beneficial plant) as maintain soil moisture, increase organic matter and nutrients in the soil and can be a host for predators of pest and diseases. Example of beneficial plants are Euphorbia heterophylla, Cassia cobanensis, Antigonon leptopus dan Turnera subulata.
Keyword: weed in palm oil, beneficial plant

Judul: Manajemen Pemupukan Kelapa Sawit (Elaeis guineensis Jacq.) Tanaman Menghasilkan di Angsana Estate, PT Ladangrumpun Suburabadi, Minamas Plantation, Tanah Bumbu, Kalimantan Selatan
Abstrak: The internship was conducted at Angsana Estate, PT Ladangrumpun Suburabadi, District of Tanah Bumbu, South Borneo on February 15th to June 15th 2010. The internship aims to increase knowledge about the cultivation of oil palm both technical and managerial, in addition, an internship is to review the management of oil palm crop fertilization on crop yield, analyze the factors that affect the efficiency and effectiveness of fertilization and its influence on palm oil production. Data collection was conducted on the collection of primary data and secondary data. Primary data obtained by observation and analysis of the efficiency (time, cost, and labor), effectiveness (the right time, right dose, right type, and the right way), nutrient deficiency, the productivity of oil palm, interviews with employees, foremen, and assistant. Secondary data obtained from data given by the cation garden and library administration. The data obtained was analyzed by qualitative descriptive method. The outcomes of this internship showed that fertilization in Angsana Estate has been realized with good accordance with the budget and in compliance with the concept of the effectiveness of the right kind and proper manner, but has not met the concept of timely and appropriate dosage. Angsana Estate also has met the concept of fertilizer efficiency that is efficient time, cost and labor. Nutrient deficiency in oil palm plantations do not provide significant effect on palm oil production because fertilizer has been adjusted based on the results of leaf analysis done by Minamas Research Centre. The existence of difference in productivity Angsana Estate with existing standards may be caused by variables other than fertilization.
Keyword: 

Judul: Transisi Fasa Materi Hadronik ke Materi Kuark pada Inti Bintang Neutron.
Abstrak: Bintang neutron terdiri dari beberapa lapisan yang disusun oleh materi nuklir yang berbeda dengan kerapatan yang semakin tinggi ketika mendekati pusat bintang. Inti luar bintang neutron disusun oleh materi hadronik (nukleon, lepton, dan hyperon), sedangkan inti dalam bintang neutron disusun oleh kuark-kuark bebas (up, down, strange) yang saling berinteraksi. Tujuan penelitian ini adalah mempelajari bagaimana transisi dari inti luar ke inti dalam bintang neutron dengan menggunakan pendekatan RMF (Relativistic Mean Field) untuk materi hadronik dan CIDDM (Confined Isospin Density Dependent Mass) untuk materi kuark. Tekanan transisi diperoleh ketika potensial kimia barion materi hadronik dan materi kuark bernilai sama. Nilai tekanan transisi dengan parameter SU6-TM1 sekitar 87 MeV/fm3 dan diperoleh massa maksimum bintang neutron yaitu 1.92M dengan jari-jari sekitar 8.62 km. Nilai tekanan transisi dengan parameter SU6-G2 sekitar 53 MeV/fm3 dan massa maksimum bintang neutron yaitu 1.88M dengan jari-jari sekitar 8.16 km. Jenis transisi fasa adalah orde satu ditandai dengan diskontinuitas dalam kerapatan energi (adanya mixed phase). Parameter-parameter pada model nuklir yang digunakan menyebabkan perbedaan kekakuan persamaan keadaan (EOS) dari materi hadronik dan materi kuark sehingga nilai tekanan transisi dari fasa hadronik ke fasa kuark juga berbeda.
Keyword: bintang neutron, persamaan keadaan, transisi fasa