Judul: Perbaikan Pertumbuhan Tanaman Sengon (Paraserianthes falcataria (L.) Neilsen) dengan Teknik Lateral Root Manipulation (LRM) di Bojong Jengkol, Kabupaten Bogor
Abstrak: Sengon is a fast growing tree species that has good adaptation. But when the land have been compacted and densited, sengon shows dwarfed growth. A lateral root manipulation (LRM) is one of cultivating plants that can fix the growth of plants. The study is aimed to know the effect of LRM technique on the sengon improvment growth. The methodology applied the factorial randomized design method which have three factors. The first factor is to cut the lateral root, the second is to apply stimulantion on root and microbe, and the third is to fertilize periodic. The results show that combination cutting root and fertilize periodic without applying stimulantion on root and microbe increase height improved 10,45 cm per week and number of bud 10 peices per week. All treatments did not effect on the stem diameter. The variables of the treatment visualy dont changes significally color of leaf and new root growing. However, the treatment of cutting root can stimulate to grow a new root.
Keyword: Bogor Agricultural University (IPB), root and microbe stimulant, Paraserianthes falcataria, lateral root manipulation, fertilize

Judul: Pertumbuhan Tanaman Sengon Buto (Enterolobium cyclocarpum Griseb.) dengan Teknik Lateral Root Manipulation (LRM) di PT Cibaliung Sumberdaya, Banten
Abstrak: Mining activities have impacted to decrease soil productivity and soil compaction. Lateral Root Manipulation (LRM) is one technique that can be used overcome the stagnation of the plant. LRM technique is cutting off the lateral root. The purpose of this research to find the response from sengon buto in post gold mine land in PT Cibaliung Sumberdaya, Banten. This research was done by using the factorial randomized block design method with 3 factors. The first factor is lateral roots cutting, the second is root and microbe stimulant application, and the third is polymer fertilizing. The results indicate the treatment of lateral roots cutting by LRM technique, the root and microbe stimulant application, and fertilizing can stimulate the growth of stem diameter and height. The combination treatment of lateral roots cutting and root and microbe stimulant application is significant to diameter growth. Single method cutting lateral root is significant to height growth.
Keyword: sengon buto., root and microbe stimulant, LRM, fertilizer polymer

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