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- 저자 : A B M Hasan Talukder (검색결과 2 건)
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Himel Talukder,Sejuti Das Tinni,Jahid Hasan Tipu 한국동물유전육종학회 2020 한국동물유전육종학회지 Vol.4 No.4
Objectives:This study was undertaken on Japanese quails to evaluate their productive and reproductive performance in Sylhet Sadar Upazilla, Sylhet. Materials and Methods:Total 942 quails and 250 eggs of different private farms of Sylhet Sadar Upazilla were observed and studied. The traits studied include body weight, morphological traits, and reproductive traits. Results:Results showed that, mean hatch weight and mature body weight (20 weeks) of Japanese quails were 5.74±1.14gm and 170.02±5.85gm respectively. At adult age (12 weeks) mean shank length, body length, wing length and breast girth were 3.91±0.16, 18.05±1.02, 15.20±0.95, 7.30±0.12cm respectively. Mean age at sexual maturity, was 54.06±1.78 days while weight of first egg and average egg weight were 7.72±0.18 and 12.72±1.95gm respectively. Henday egg production and Hen-housed egg production were 5.64±1.41% and 11.49±4.96%, respectively. Percentage mean fertility was 78.40±4.05 while that of the percentage mean hatchability of eggs was 63.59±5.08. Percentage mean reproductive capacity was 70.28±3.53 and mean embryonic mortality was 26.82±2.94%. Conclusions:It was concluded that given the productive and reproductive estimates, Japanese quail can serve as an alternate livestock species that canameliorate shortage of protein intake in environment studied.
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Design, Simulation and Characteristics Analysis of Wideband Metamaterial Absorber Based on Titanium
Mohammad Belal Hossain,A B M Hasan Talukder 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.9
Wide range absorption is specially needed for different microtechnological applications along with microbolometers, photodetectors and coherent thermal emitters. Here we report, design of a wideband metamaterial absorber based on Titanium (Ti) and the analysis of its absorption and reflection characteristics. The structure of the absorber consists of two titanium layers spaced by a dielectric layer of refractive index 2. The simulation is done for analyzing its characteristics using finite difference time domain method (FDTD). The results show that the absorption occurs above 90 percent in the range 750 nm to 1200 nm while the reflection occurs below 10 percent. Overall absorption over the range (400 nm to 1500 nm) is found to be almost above 80 percent.
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