Judul: Lawson Criterion Analysis of D-3He Fusion Reaction
Abstrak: Reaksi fusi merupakan reaksi penggabungan dua inti atom ringan menjadi inti atom baru yang lebih berat dengan melepas sejumlah energi. Kriteria Lawson sebagai syarat penting dalam reaksi fusi berkelanjutan. Penelitian ini bertujuan untuk mengetahui kriteria Lawson pada reaksi fusi D-³He dengan temperatur 75, 80, 85, 90, 95, 100 keV, pengaruh radiasi bremsstrahlung dan reaktivitas fusi menggunakan parameter Hively dan Bosch-Hale. Nilai reaktivitas Hively berada dalam rentang 1,121 × 10^(-22) – 1,726 ×10^(-22) m^3/s, tidak jauh berbeda dengan reaktivitas Bosch-Hale yaitu 1,208 × 10^(-22) – 1,718 × 10^(-22) m^3/s. Reaktivitas fusi mempengaruhi kriteria Lawson, yaitu berada dalam rentang 1,110 × 10^21 – 1,452 × 10^21 s/m^3. Nilai tersebut menunjukkan waktu kungkungan dan kerapatan plasma yang dibutuhkan untuk menghasilkan energi yang menguntungkan pada temperatur 75 – 100 keV sehingga fusi mencapai tahap ignition, Fusion reaction is a reaction where two light atomic nuclei merge into a new heavier atomic nucleus by releasing some energy. Lawson criterion is an important condition for sustainable fusion reactions. This study aims to determine Lawson criterion for the D-³He fusion reaction with temperatures of 75, 80, 85, 90, 95, 100 keV, the effect of bremsstrahlung radiation, and fusion reactivity using Hively and Bosch-Hale parameters. Hively's reactivity value is in the range of 1,121 × 10^(-22) – 1,726 ×10^(-22) m^3/s , not so much different from Bosch-Hale’s reactivity of 1,208 × 10^(-22) – 1,718 × 10^(-22) m^3/s. Fusion reactivity affects Lawson criterion which is in the range of 1,110 × 10^21 – 1,452 × 10^21 s/m^3. This value indicates the confinement time and plasma density required to produce net energy at a temperature of 75 – 100 keV so that fusion reaches the ignition stage.
Keyword: kriteria Lawson, radiasi bremsstrahlung, reaksi fusi, reaktivitas fusi, Lawson criterion, bremsstrahlung radiation, fusion reaction, fusion reactivity

Judul: Analysis of Increasing Plasma Temperature for D-T  Fusion Reactions in Tokamaks with Ohmic Heating
Abstrak: Reaksi fusi terkendali atau termonuklir terkendali merupakan reaksi penggabungan dua inti atom ringan menjadi inti atom yang lebih berat dengan melepaskan energi. Reaktor fusi hingga saat ini masih dalam pengembangan demi terwujudnya pembangkit listrik tenaga nuklir berbasis reaksi fusi. Biaya kontruksi menjadi salah satu faktor penghambat perkembangan reaktor fusi dunia. Penelitian ini bertujuan untuk menghitung suhu yang dapat dicapai plasma yang dipanaskan secara ohmik dalam reaktor fusi bernama Tokamak dengan ukuran radius yang divariasikan. Ukuran radius mayor yang digunakan dalam perhitungan dengan rentang 2 m sampai 4 m serta radius minor 1 m sampai 3 m. Nilai tersebut ditetapkan lebih kecil dari Tokamak yang pernah ada demi terwujudnya penekanan pada biaya konstruksi. Ukuran radius mayor memiliki peranan dalam jumlah tumbukan partikel terjadi sehingga berbanding lurus dengan suhu yang dicapai plasma. Ukuran radius minor memiliki peranan dalam proses konversi panas melalui dinding reaktor sehingga hubungannya berbanding terbalik dengan suhu yang dicapai plasma., Fusion control or controlled thermonuclear is a reaction that combines two light atomic nuclei into a heavier atomic nucleus by releasing energy. Fusion reactors are currently still being developed to realize nuclear power plants based on fusion reactions. Construction costs are one of the factors inhibiting the development of world fusion reactors. This research aims to calculate the temperature that can be reached by ohmically heated plasma in a fusion reactor called Tokamak with varying radius sizes. The size of the major radius used in the calculation ranges from 2 m to 4 m and the minor radius from 1 m to 3 m. This value is set to be smaller than existing Tokamaks in order to reduce construction costs. The size of the major radius plays a role in the number of particle collisions that occur so that it is directly proportional to the temperature reached by the plasma. The size of the minor radius plays a role in the heat conversion process through the reactor walls so that the relationship is inversely proportional to the temperature reached by the plasma.
Keyword: radius major, radius minor, reaksi fusi, Tokamak

Judul: Performa kecoa madagaskar (Gromphadorhina portentosa) pada tipe tempat sembunyi yang berbeda
Abstrak: Madagascar cockroaches come from Madagascar Island in the southest of Africa Beach. This cockroaches is a giant cockroaches in the world and as big as a giant beetle that called as "giant cockroaches". Madagascar cockroaches is a giant cockroaches and have a different character with another cockroaches, that is big size and types that it make it looks like beetle, fizz, doesn't bite, doesn't have wings and outdorless so that these cockroaches harmless for human and can be keep as pets that quite popular all over the world because of it's unique.
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