Judul: Pengaruh Kebergantungan Sudut Permukaan Fermi terhadap Tekanan Anisotropik Inti Bintang Neutron
Abstrak: Telah dihitung persamaan keadaan bintang neutron untuk symmetric nuclear matter (SNM), pure neutron matter (PNM), dan neutron star matter (NSM) dengan asumsi anisotropik. Asumsi ini terkait dengan permukaan Fermi bintang neutron yang tidak lagi spherical (terdeformasi) dan harus dimodifikasi dengan menambahkan faktor sudut dengan parameter . Variasi delta yang diterima yang sesuai dengan data eksperimen energi ikat berkisar dari 0 hingga 0.02. Persamaan TOV dimodifikasi dengan menambahkan suku anisotropik , yaitu selisih dari tekanan radial dan tangensial. Massa maksimum bintang neutron yang diperoleh ada pada rentang 1.78 - 2.35 kali massa matahari (Mʘ) dengan jari-jari berkisar 11.96 – 13.59 km. Tekanan radial dan tangensial berkontribusi terhadap penurunan massa bintang neutron dan memperbesar jari-jari di pusat bintang neutron.
Keyword: anisotropik, radial, sigma, tangensial, tekanan, TOV

Judul: Simulasi Persamaan Keadaan Bintang Neutron Menggunakan Persamaan Polytropic dan Modified Gravity
Abstrak: Bintang neutron merupakan fase akhir dari suatu bintang yang berukuran cukup masif ketika telah kehabisan bahan bakarnya. Bintang ini tersusun atas beberapa macam materi penyusun, tetapi lebih didominasi oleh materi neutron terdegenerasi. Pada penelitian ini diperoleh bahwa dengan menggunakan pendekatan relativistic diperoleh jari-jari bintang neutron dengan nilai radius maksimum 32 km, sementara pendekatan nonrelativistic menghasilkan radius yang lebih kecil sebesar 11 km. Efek relativitas dalam hal ini akan meningkatkan nilai massa dan jari-jari bintang neutron. Pada variasi tekanan pusat, semakin besar tekanan pusat bintang neutron akan meningkatkan nilai massa dan mengecilkan nilai jari-jarinya. Pada pusat bintang, nilai rapat energi dan tekanannya sangat tinggi disebabkan oleh besarnya jumlah neutron di pusat dibandingkan di permukaan. Pada persamaan gravitasi termodifikasi yaitu persamaan Beyond Horndeski, profil bintang neutron akan lebih cocok pada parameter ϒ = -0.1 dengan massa maksimum sebesar 2.1851 Mʘ menggunakan pendekatan relativistic dan sebesar 0.791 Mʘ menggunakan pendekatan nonrelativistic .
Keyword: beyond horndeski, bintang neutron, Newtonian, efek relativistik, TOV

Judul: Development of DNA Vaccine Encoding Glycoprotein of Koi Herpes Virus Using Local Isolate.
Abstrak: The aim of this research was to develop DNA vaccine of Koi Herpesvirus in carp. Glycoprotein gene originated from ORF 25 KHV virus that is 1.8 kbp in size, is a potential gene in DNA vaccine construction. The sequencing and similarity analysis of the gene using BLAST software showed that this gene is a GP25 gene and was found to be very similar (99%) to GP25 of KHV virus from the USA and Israel. When this GP25 gene was ligated with pGEMT Easy (pT, 3 kbp in size) vector, plasmid size was increasing up to 5 kb. Following this, a digestion of pT-GP25 plasmid using Sal I enzyme was applied resulted in a GP25 fragment (1.8 kbp). Subsequently, pAct-D6 with a size of 8.5 kbp was also cut using the same enzyme to eleminate a D6 gene with a size of 1.6 kbp. GP25 gene was then ligated with pAct resulted a pAct-GP25 plasmid with a size of 8.8 kbp. As there was only one restriction site applied, ligation can be occurred in two different directions. Thus, in order to determine the plasmid with the desired direction PCR analysis was carried out, and plasmid with the right direction was the one that sized approximately 2.1 kbp (no. 6, 17 and 20). High level of GFP gene expression was detected in all tissues analyzed, i.e. kidney, gil, spleen, and muscle 24 hours after injection which indicated that β-actin promoter of Japanese medaka could be active in common carp. Although not as high as on 24 hours, expression was still detected until day 7 and disappeared after day 28 post injection indicating that pAct-GFP can be remained and β-actin promoter of Japanese medaka can be active in muscle, gills and kidney at least a week after injection. The result of RT-PCR analysis on pAct-GP25 injected common carp showed that GP25 gene expression can be detected 14 days after injection in all tissues observed. The expression level differences between GFP and GP25 genes possibly related to the primer sensitivity on annealing process to cDNA template and the size of PCR targeted DNA fragment, as smaller PCR targeted product will be easier to be amplified than a bigger one. The length of PCR targeted DNA with GP25 primer was 1.8 kbp whereas GFP gene was 0.6 kbp.The challenge test on common carp results showed that all unvaccinated and negative control (not infected with KHV) was alive until the end of the experiment. Whereas, the survival of fish vaccinated with a dose of 12.5 was ranged from 60.9 and 96.7%. In relation to the activity of β-actin promoter that was used in this DNA vaccine, gene expression was occured 24 hours after vaccination and remained until 2 weeks. The control fish that was not injected by GP25 showed no GP25 expression either in the observed tissues or organs and resulted in a lower survival, i.e. 23.3%. The challenge test results has indicated that the fish vaccinated with GP25 at doses of 7.5 and 12.5 μg/100μL were able to produce KHV glycoprotein in their body which would be
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