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"Penelitian bertujuan untuk mendapatkan antibodi poliklonal kelinci yang distimulasi oleh protein rekombinan globular head neuraminidase (NA) dan mengukur titer antibodi poliklonal. Protein rekombinan globular head NA berhasil diekspresikan secara intraseluler pada sel E.coli BL21 codon plus dengan induksi IPTG 0,1 mM dan dipurifikasi menggunakan resin Ni-NTA. Protein rekombinan globular head NA yang telah dipurifikasi digunakan sebagai antigen untuk menstimulasi antibodi poliklonal kelinci. Hasil penelitian menunjukkan bahwa telah dihasilkan antibodi poliklonal terhadap globular head neuraminidase dan titer antibodi paling tinggi dihasilkan sebesar 1,352.

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The aim of this study was to determine rabbit polyclonal antibody stimulated by neuraminidase (NA) globular head recombinant protein and also to measure the polyclonal antibody titer. NA globular head recombinant protein has been expressed in E.coli BL21 codon plus intracellularly induced by 0,1 mM IPTG and has been purified by Ni-NTA resin. The purified of NA globular head recombinant was used as antigen to stimulate rabbit polyclonal antibody.

The result shows that rabbit polyclonal antibody of neuraminidase globular head was produced and the highest antibody titer was 1,352."

"Komposit matriks logam sedang dikembangkan sebagai pengganti baja pada kendaraan bermotor untuk efisiensi penggunaan bahan bakar. Komposit Al-4%Cu-4%Mg berpenguat Al2O3 memiliki potensi untuk ditingkatkan sifat mekaniknya dengan pembentukan semi padat thixoforming. Pada penelitian ini, persentase fraksi volume Al2O3 sebesar 5% dan 10% difabrikasi dengan metode as cast dan thixoforming untuk mengetahui efek penambahan kadar Al2O3 dan struktur mikro hasil thixoforming dengan as cast. Hasil penelitian menunjukkan kekerasan dan ketahanan aus meningkat seiring penambahan Al2O3. Porositas komposit turut meningkat dengan penambahan Al2O3 sehingga densitas komposit menurun. Pengamatan struktur mikro menunjukkan komposit as cast memiliki struktur dendritik sedangkan komposit hasil thixoforming memiliki struktur globular. Struktur globular memiliki sifat yang lebih baik dibandingkan struktur dendritik dimana komposit hasil thixoforming memiliki nilai kekerasan dan ketahanan aus yang lebih tinggi dibandingkan dengan komposit as cast. ......Aluminum matrix composite has been widely developed as a replacement of steel which being used in vehicle for fuel eficiency. Composite Al-4%Cu-4%Mg with Al2O3 reinforcement has potential to increase its mechanical properties with thixoforming process. In this study, aluminum composite with 5% and 10% volume fraction of Al2O3 were fabricated by as cast and thixoforming process to determine the effect of Al2O3 addition and microstructure of as cast compared with thixoforming composite. The results show that hardness and wear resistance increased with Al2O3 addition. Porosity also increased with Al2O3 addition so the density of composite decreased. Microstructure observation shows that as cast composite has dendritic microstructure while thixoformed composite has globular microstructure. Globular microstructure has better characteristic than dendritic microstructure that the hardness and wear resistance of thixoformed composite is higher than as cast composite"