Mitochondrial DNA Diversity and Origin of Red Chittagong Cattle

Bhuiyan, M.S.A.,Bhuiyan, A.K.F.H.,Yoon, D.H.,Jeon, J.T.,Park, C.S.,Lee, J.H. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.10

To determine the origin and genetic diversity of Red Chittagong (RC) cattle in Bangladesh, we analyzed mitochondrial DNA displacement loop (D-loop) sequences of 48 samples along with 22 previously published sequences from Bos indicus and Bos taurus breeds. Twenty five haplotypes were identified in RC cattle that were defined by 44 polymorphic sites and nucleotide diversity was $0.0055{\pm}0.0026$. The estimated sequence divergence times between RC and other zebu cattle breeds studied ranged between 22,700-26,900 years before present (YBP) which, it is suggested, predate domestication of RC cattle. Furthermore, it is assumed that introgressions have occurred in this breed mainly from Indian zebu breeds in the recent millennia. The phylogenetic studies showed RC cattle clustered with Bos indicus lineage with two distinct haplogroups representing high genetic variability of this breed. These findings can be used for designing proper breeding and conservation strategies for RC cattle in Bangladesh.

Mitochondrial DNA Diversity and Origin of Red Chittagong Cattle

Bhuiyan, M.S.A.,Bhuiyan, A.K.F.H.,Yoon, D.H.,Jeon, J.T.,Park, C.S.,Lee, J.H. 충남대학교 형질전환복제돼지연구센터 2007 논문집 Vol. No.10

To determine the origin and genetic diversity of Red Chittagong (RC) cattle in Bangladesh, we analyzed mitochondrial DNA displacement loop (D-loop) sequences of 48 samples along with 22 previously published sequences from Bos indicus and Bos taurus breeds. Twenty five haplotypes were identified in RC cattle that were defined by 44 polymorphic sites and nucleotide diversity was 0.0055±0.0026. The estimated sequence divergence times between RC and other zebu cattle breeds studied ranged between 22,700-26,900 years before present (YBP) which, it is suggested, predate domestication of RC cattle. Furthermore, it is assumed that introgressions have occurred in this breed mainly from Indian zebu breeds in the recent millennia. The phylogenetic studies showed RC cattle clustered with Bos indicus lineage with two distinct haplogroups representing high genetic variability of this breed. These findings can be used for designing proper breeding and conservation strategies for RC cattle in Bangladesh.

SELECTION FOR PROLIFICACY IN ROMNEY SHEEP I. DIRECT RESPONSE TO SELECTION

Bhuiyan, A.K.F.H.,Curran, M.K. Asian Australasian Association of Animal Productio 1995 Animal Bioscience Vol.8 No.1

A selection experiment with Romney Marsh sheep was used to evaluate direct responses to selection. Two flocks were maintained; a) the selection line formed in 1979 by the Romney Group Breeders to select for high prolificacy, defined as the number of live lambs born per ewe joined per year and b) a control line, established in 1982, where flock replacements were chosen at random. Predicted responses per year of birth female group and per year respectively were 0.033 and 0.027 live lambs. The rate of predicted response per year was within the theoretical expected range from 0.01 to 0.03 of the mean. The rates of realized response in prolificacy per year of birth female group and per year respectively were 0.026 and 0.021. These estimates of realized responses represented between 0.01 and 0.02 of the control line mean per year.

Fostering spirituality and psychosocial health through mind-body practices in underserved populations

Bhuiyan Nishat,McNeill Lorna H.,Bopp Melissa,Downs Danielle Symons,Mama Scherezade K. 한국한의학연구원 2022 Integrative Medicine Research Vol.11 No.1

Background: This study examined changes in spirituality and psychosocial outcomes among African American and rural adults participating in a culturally-adapted mind-body intervention. Methods: African American (n = 22) and rural (n = 38) adults in Harmony & Health attended mind-body sessions twice a week for eight weeks and completed questionnaires on spirituality and psychosocial distress at baseline and post-intervention. Linear regression and repeated measures analyses were used to examine associations between intervention attendance and spirituality. Results: Attendance was significantly associated with increased spirituality (β=0.168, p = 013). Repeated measures analyses revealed a significant three-way interaction between attendance, spirituality, and study site (F(9,31)=2.891, p = 013). Urban African American participants who attended ≥75% of sessions reported greater increases in spirituality. Conclusion: Findings suggest that mind-body practices may foster spirituality in urban African American adults. Additional adaptations are needed to strengthen spirituality in rural residents and to improve psychosocial health and wellbeing in this underserved population. Background: This study examined changes in spirituality and psychosocial outcomes among African American and rural adults participating in a culturally-adapted mind-body intervention. Methods: African American (n = 22) and rural (n = 38) adults in Harmony & Health attended mind-body sessions twice a week for eight weeks and completed questionnaires on spirituality and psychosocial distress at baseline and post-intervention. Linear regression and repeated measures analyses were used to examine associations between intervention attendance and spirituality. Results: Attendance was significantly associated with increased spirituality (β=0.168, p = 013). Repeated measures analyses revealed a significant three-way interaction between attendance, spirituality, and study site (F(9,31)=2.891, p = 013). Urban African American participants who attended ≥75% of sessions reported greater increases in spirituality. Conclusion: Findings suggest that mind-body practices may foster spirituality in urban African American adults. Additional adaptations are needed to strengthen spirituality in rural residents and to improve psychosocial health and wellbeing in this underserved population.

SELECTION FOR PROLIFICACY IN ROMNEY SHEEP II. CORRELATED RESPONSES

Bhuiyan, A.K.F.H.,Curran, M.K. Asian Australasian Association of Animal Productio 1995 Animal Bioscience Vol.8 No.1

A selection experiment with Romney Marsh sheep was used to evaluate correlated responses to selection. The selected flock was formed in 1979 by the Romney Group Breeders where selection was for prolificacy, defined as the number of live lambs born per ewe joined per year and a randomly selected control flock was established in 1982. Selection for prolificacy resulted in (i) increased ewe fertility, (ii) increased ewe ovulation rate, (iii) increased ewe litter size, (iv) decreased ewe body weight, (v) decreased lamb birth weight and (vi) decreased lamb 8-week weight. The rates of correlated responses per year respectively for ewe fertility, ewe ovulation rate, ewe litter size, ewe body weight, lamb birth weight and lamb 8-week weight were 0.033(0.002), 0.043(0.016), 0.019(0.005), -0.017(0.066), -0.055(0.025) and -0.150(0.057).

Systems Approach to Change Management for Sustainable Tourism Development in Bangladesh

Bhuiyan, Bashir Ahmed,Alam, Md. Jahangir KNU The Institute of Management Economy Research 2014 Asia-Pacific Journal of Business Vol.5 No.2

Tourism has been considered as the largest industry in the world, which is contributing towards employment generation, wealth creation and pursuing social benefits. Growing concern about the impact of human activities upon the environment, increased awareness of and concern for global environment have intensified the demand for sustainable tourism and their focus on balancing of: profit-driven motives, preserving and enhancing the social as well as ecological balance. Based on secondary materials and content analysis present study evaluated existing status of sustainable tourism development and explored important change strategies for future improvement of tourism sector in Bangladesh. The study recognized different views of change management and various strategies for obtaining sustainability in tourism industry. The present study identified the institutional networks, challenges in the way of applying systems approach to change management for sustainable tourism development and suggested important options for overcoming the impediments to operate through the proposed strategic framework in Bangladesh.

Design of an Active Inductor-Based T/R Switch in 0.13 μm CMOS Technology for 2.4 GHz RF Transceivers

Bhuiyan, Mohammad Arif Sobhan,Reaz, Mamun Bin Ibne,Badal, Md. Torikul Islam,Mukit, Md. Abdul,Kamal, Noorfazila The Korean Institute of Electrical and Electronic 2016 Transactions on Electrical and Electronic Material Vol.17 No.5

A high-performance transmit/receive (T/R) switch is essential for every radio-frequency (RF) device. This paper proposes a T/R switch that is designed in the CEDEC 0.13 μm complementary metal-oxide-semiconductor (CMOS) technology for 2.4 GHz ISM-band RF applications. The switch exhibits a 1 dB insertion loss, a 28.6 dB isolation, and a 35.8 dBm power-handling capacity in the transmit mode; meanwhile, for the 1.8 V/0 V control voltages, a 1.1 dB insertion loss and a 19.4 dB isolation were exhibited with an extremely-low power dissipation of 377.14 μW in the receive mode. Besides, the variations of the insertion loss and the isolation of the switch for a temperature change from - 25℃ to 125℃ are 0.019 dB and 0.095 dB, respectively. To obtain a lucrative performance, an active inductor-based resonant circuit, body floating, a transistor W/L optimization, and an isolated CMOS structure were adopted for the switch design. Further, due to the avoidance of bulky inductors and capacitors, a very small chip size of 0.0207 mm² that is the lowest-ever reported chip area for this frequency band was achieved.

Genetic parameters of carcass and meat quality traits in different muscles (longissimus dorsi and semimembranosus) of Hanwoo (Korean cattle)

Bhuiyan, M. S. A.,Kim, H. J.,Lee, D. H.,Lee, S. H.,Cho, S. H.,Yang, B. S.,Kim, S. D.,Lee, S. H. American Society of Animal Science 2017 Journal of Animal Science Vol. No.

<P>We estimated heritability (h(2)) and genetic and phenotypic correlations for carcass and meat quality traits of longissimus dorsi (LD) and semi-membranosus (SM) muscles in 30-mo-old Hanwoo steers. Variance and covariance components were estimated using REML procedures under univariate and bivariate models. The mean carcass weight (CWT), eye muscle area (EMA), back fat thickness (BFT), and marbling score (MS) were 428.20 +/- 46.30 kg, 87.38 +/- 8.54 cm2, 13.00 +/- 5.14 mm, and 5.21 +/- 1.56, respectively. The mean CIE reflectance of meat lightness (L*), redness (a*), and yellowness (b*) were 40.01 +/- 2.73, 22.37 +/- 2.18, and 10.35 +/- 1.46, respectively, in LD muscles and 36.33 +/- 2.44, 22.91 +/- 2.43, and 10.25 +/- 1.65, respectively, in SM muscles. The mean Warner-Bratzler shear force (WBSF), intramuscular fat content (IMF), water-holding capacity (WHC), and protein and ash content in LD and SM muscles were 3.84 +/- 0.96 and 6.52 +/- 1.21 kg, 15.91 +/- 4.39 and 5.10 +/- 1.94%, 62.07 +/- 3.38 and 71.61 +/- 2.06%, 20.01 +/- 1.39 and 21.34 +/- 0.89%, and 0.80 +/- 0.10 and 0.93 +/- 0.07, respectively. The h(2) estimates of CWT, EMA, BFT, and MS were 0.51 +/- 0.13, 0.45 +/- 0.13, 0.29 +/- 0.09, and 0.22 +/- 0.08, respectively. The h(2) estimates were moderate for meat quality traits and were 0.37 +/- 0.12, 0.40 +/- 0.12, 0.33 +/- 0.10, 0.33 +/- 0.10, 0.30 +/- 0.11, and 0.24 +/- 0.09 for L*, WBSF, IMF, WHC, and protein and ash content, respectively, in LD muscle; estimates from SM muscle were comparatively low (0.08 +/- 0.06 to 0.25 +/- 0.09). Estimates of h(2) for a* and b* were also low (0.08 +/- 0.06 to 0.13 +/- 0.07). Carcass weight had a moderate, positive genetic correlation with EMA (0.60 +/- 0.13) and a weak correlation with MS and BFT. The genetic correlations among the 3 colorimeter variants were strong and positive within and between muscles. Intramuscular fat content had moderate to strong and negative genetic correlations with WBSF (-0.49 +/- 0.18), WHC (-0.99 +/- 0.01), and protein (-0.93 +/- 0.04) and ash content (-0.98 +/- 0.06) in LD muscle, whereas the associations were less pronounced in SM muscle. In general, CWT and EMA had low genetic and phenotypic correlations with meat quality traits, which suggests that the traits are independent and have distinct genetic contributions in each muscle. Conversely, with few exceptions, meat quality traits had genetic and phenotypic correlations with MS and BFT. In conclusion, the estimated genetic parameters for carcass and meat quality traits could be used for genetic evaluation and breeding programs in Korean Hanwoo cattle populations.</P>

DNA Polymorphisms in SREBF1 and FASN Genes Affect Fatty Acid Composition in Korean Cattle (Hanwoo)

Bhuiyan, M.S.A.,Yu, S.L.,Jeon, J.T.,Yoon, D.,Cho, Y.M.,Park, E.W.,Kim, N.K.,Kim, K.S.,Lee, J.H. Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.6

Sterol regulatory element binding factor 1 (SREBF1) and fatty acid synthase (FASN) genes play an important role in the biosynthesis of fatty acids and cholesterol, and in lipid metabolism. This study used polymorphisms in the intron 5 of bovine SREBF1 and in the thioesterase (TE) domain of FASN genes to evaluate their associations with beef fatty acid composition. A previously identified 84-bp indel (L: insertion/long type and S: deletion/short type) of the SREBF1 gene in Korean cattle had significant associations with the concentration of stearic (C18:0), linoleic (C18:2) and polyunsaturated fatty acids (PUFA). The stearic acid concentration was 6.30% lower in the SS than the LL genotype (p<0.05), but the linoleic and PUFA contents were 11.06% and 12.20% higher in SS compared to LL (p<0.05). Based on the sequence analysis, five single nucleotide polymorphisms (SNPs) g.17924G>A, g.18043C>T, g.18440G>A, g.18529G>A and g.18663C>T in the TE domain of the FASN gene were identified among the different cattle breeds studied. Among these, only g.17924 G>A and g.18663C>T SNPs were segregating in the Hanwoo population. The g.17924G>A SNP is a non-synonymous mutation (thr2264ala) and was significantly associated with the contents of palmitic (C16:0) and oleic acid (C18:1). The oleic acid concentration was 3.18% and 2.79% higher in Hanwoo with the GG genotype than the AA and AG genotypes, respectively (p<0.05), whereas the GG genotype had 3.8% and 4.01% lower palmitic acid than in those cattle with genotype AA and AG, respectively (p<0.05). Tissue expression data showed that SREBFI and FASN genes were expressed in a variety of tissues though they were expressed preferentially in different muscle tissues. In conclusion, the 84-bp indel of SREBF1 and g.17924G>A SNP of the FASN gene can be used as DNA markers to select Hanwoo breeding stock for fatty acid composition.

Total-Ionizing-Dose Responses of GaN-Based HEMTs With Different Channel Thicknesses and MOSHEMTs With Epitaxial MgCaO as Gate Dielectric

Bhuiyan, Maruf A.,Zhou, Hong,Chang, Sung-Jae,Lou, Xiabing,Gong, Xian,Jiang, Rong,Gong, Huiqi,Zhang, En Xia,Won, Chul-Ho,Lim, Jong-Won,Lee, Jung-Hee,Gordon, Roy G.,Reed, Robert A.,Fleetwood, Daniel M. Professional Technical Group on Nuclear Science 2018 IEEE transactions on nuclear science Vol.65 No.1

<P>The radiation hardness of AlGaN/GaN high-electron-mobility transistors (HEMTs) is found to improve with increasing GaN channel thickness. Epitaxial MgCaO shows promise as a radiation-tolerant gate dielectric, with only small shifts in operating parameters of metal–oxide–semiconductor HEMTs observed at doses up to 1 Mrad(SiO<SUB><I>2</I></SUB>). Bias-induced electron trapping and radiation-induced-hole trapping can occur in the MgCaO, depending on the applied bias during stress and/or irradiation. AC transconductance measurements are used to help understand charge trapping in these devices.</P>