Judul: Karakterisasi Optik dan Listrik Film LiTaO3 (Lithium Tantalate) pada Substrat Silikon [Si(111)] Tipe-n/n+
Abstrak: Telah berhasil dibuat film LiTaO3 pada substrat silikon [Si(111)] tipe-n/n+ dengan variasi suhu annealing selama 8 jam pada suhu 550 oC, 575 oC, 600 oC, dan 625 oC. Metode yang digunakan yaitu Chemical Solution Deposition (CSD) dengan spin coating berkecepatan putar 3000 rpm selama 30 detik dalam kelarutan 1 M. Analisis energi band gap menggunakan metode Tauc Plot menghasilkan nilai sebesar 2.59 - 2.72 eV. Hasil analisis XRD untuk film LiTaO3 pada suhu annealing 600 oC menunjukkan bahwa struktur kristalnya membentuk hexagonal dengan parameter kisi a = b = 5.199Å dan c = 13.890Å. Hasil uji optik menunjukkan bahwa film LiTaO3 dapat mengabsorbsi spektrum Inframerah dekat dengan transisi indirect. Hasil uji listrik menunjukkan bahwa film LiTaO3 termasuk material semikonduktor
Keyword: LiTaO3, electrical properties, optical properties, n/n+-type silicon [Si(111)], XRD, Karakterisasi XRD, X-Ray difraction, Metode tauc plot, Konduktivitas, Konstantra dielektrik

Judul: Karakterisasi Optik Film LiTaO3 yang ditumbuhkan di atas Substrat Silikon Tipe-P pada Variasi Suhu Annealing.
Abstrak: Telah berhasil dibuat film tipis LiTaO3 di atas substrat Silikon (100) tipe-p dengan metode Chemical Solution Deposition (CSD) dan spin coating berkecepatan putar 3000 rpm selama 30 detik dalam kelarutan 1 M. Film tipis di annealing pada suhu 550 ⁰C, 575 ⁰C, 600 ⁰C dan 625 ⁰C selama waktu tahan 8 jam dengan laju kenaikan suhu 1.67 ⁰C/menit. Hasil uji optik menunjukkan film LiTaO3 dapat mengabsorpsi cahaya tampak pada near infrared sehingga dapat digunakan sebagai cikal bakal sensor inframerah. Analisis energi gap menggunakan metode Tauc Plot diperoleh hasil nilai 2.649 eV, 2.949 eV, 2.744 eV dan 2.752 eV. Hasil uji sifat listrik memperlihatkan film LiTaO3 bersifat semikonduktor dan konduktif. Analisis XRD film LiTaO3 membentuk struktur kristal hexagonal memiliki parameter a=b=5.153 Å and c=13.89 Å.
Keyword: Energy Gap, LiTaO3, optik, silikon tipe-p, XRD

Judul: Estimation of Additive and Non-Additive Genetic Variances of Body Weight, Egg Weight and Egg Production for Quails (Coturnix coturnix japonica) with an Animal Model Analysis
Abstrak: This study estimates the additive and non-additive variances for egg production and body weight traits of two lines of quails from a long-term selection with the help of the REML method. For the body weight of 42-day-old females (BW42f) and males (BW42m), a total of 7,934 records for line 1 and 7,214 records for line 2 from 21 generations were used in our analyses. Additionally, 1,717 records of females from line 1 and 1,671 records of females from line 2 contained information on their egg production at an age of 42 to 200 days (EN200), on the average egg weight for the first 11 weeks of their laying season (EW1), on the average egg weight from weeks 12 to 23 (EW2), and on their body weight at an age of 200 days (BW200f). A multivariate additive animal model and one-trait dominance models, which include the inbreeding coefficients as covariates, were fitted to the data. The estimates of the heritability gained from our dominance models were smaller than those from the additive model. For line 1, the heritability values decreased for EN200 from 0.35 to 0.32, for EW1 from 0.66 to 0.56, for BW200f from 0.42 to 0.38, and for BW200m from 0.51 to 0.49, respectively. For the first line, the respective ratio (d2) of the dominance variance to the phenotypic variance for EN200, EW1, BW200f and BW200m was 0.08, 0.22, 0.09 and 0.21, and the values for the second line were 0.12, 0.06, 0.001 and 0.23.
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