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 Penunasan Kelapa Sawit (Elaeis guineensis Jacq.) di Sungai Bahaur Estate, PT Windu Nabatindo Abadi, Kalimantan Tengah
Abstrak: The apprentice was conducted at Division 3 of Sungai Bahaur Estate (SBHE), PT Windu Nabatindo Abadi, Kotawaringin Timur, in Central Borneo Province from February untill June 2013. The assignment composed as field worker for one month, as accompanied foreman for one month and as accompanied of division’s assistant for two months. This apprentice was aimed to extend the knowledge and skill about technical and managerial aspects of oil palm plantation especially in canopy management. The specific observation was conducted on canopy management technique, sum of standed midrib, male and female infloresence and fruit bunch. Management canopy system was applied by corective pruning. The pruning system still was not done as well as standard operasional procedure, that caused by improper work of harvester and less uniformity of planting year in one block. Generally, pruning or canopy management at SBHE have been performed well enough, however there were need some improvement for overcoming less worker number, variation of working area and incentives system.
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