Polymorphysims of CYP17-I Gene in the Exons Were Associated with the Reproductive Endocrine of Japanese Flounder (Paralichthys olivaceus)

Ma, R.Q.,He, F.,Wen, H.S.,Li, J.F.,Mu, W.J.,Liu, M.,Zhang, Y.Q.,Hu, J.,Qun, L. Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.6

The cytochrome P450c17-I (CYP17-I) is one of the enzymes critical to gonadal development and the synthesis of androgens. Two single nucleotide polymorphisms (SNPs) were detected within the coding region of the CYP17-I gene in a population of 75 male Japanese flounder (Paralichthys olivaceus). They were SNP1 (c.C445T) located in exon2 and SNP2 (c.T980C (p.Phe307Leu)) located in exon5. Four physiological indices, which were serum testosterone (T), serum $17{\beta}$-estradiol ($E_2$), Hepatosomatic index (HSI), and Gonadosomatic index (GSI), were studied to examine the effect of the two SNPs on the reproductive endocrines of Japanese flounder. Multiple comparisons revealed that CT genotype of SNP1 had a much lower T level than CC genotype (p<0.05) and the GSI of individuals with CC genotype of SNP2 was higher than those with TT genotype (p<0.05). Four diplotypes were constructed based on the two SNPs and the diplotype D3 had a significantly lower T level and GSI. In conclusion, the two SNPs were significantly associated with reproductive traits of Japanese flounder.

Association of SNP Haplotypes at the Myostatin Gene with Muscular Hypertrophy in Sheep

Gan, S.Q.,Du, Z.,Liu, S.R.,Yang, Y.L.,Shen, M.,Wang, X.H.,Yin, J.L.,Hu, X.X.,Fei, J.,Fan, J.J.,Wang, J.H.,He, Q.H.,Zhang, Y.S.,Li, N. Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.7

The myostatin gene of seven important meat (Beltex (Australia), Beltex$\times$Huyang (F1), Meat and Multi-Prolific Chinese Merino Fine Wool, Meat Chinese Merino Fine Wool and Dorper (South Africa)) and non-meat (Huyang and Kazak) sheep breeds was analyzed to study the genetic basis of muscular hypertrophy (double muscling) phenotype in sheep. SNPs, four in regulatory regions and several in the introns in the myostatin gene, were identified, and the former four SNPs were used for further studies. Twelve haplotypes were predicted by PHASE program, of which four main haplotypes (1, 3, 7, 9) were present in 90% of the 364 sheep in the study. Haplotypes 1-4 were mainly present in meat breeds while haplotypes 7 and 9 dominated the non-meat breeds. The association between haplotypes and average daily gain (ADG) was analyzed among 116 sheep with production data, Haplo2 (CGAA) and Haplo8 (TGAA) were identified to have significant (p<0.05) effect on ADG by the model (JMP5.1 software) taking into account the effects of breed, family background, haplotype, birth weight and sex. ADG of these haplotype groups also correlated well (r = 0.82) with hypertrophic phenotype scores. In conclusion, the mutations -956 (T$\rightarrow$C), -41 (C$\rightarrow$A) and 6223 (G$\rightarrow$A) involved in Haplo2 and 8 may be associated with the double-muscling trait by influencing myostatin function and be suitable markers in selecting meat sheep.

Upgrade of X-ray crystal spectrometer for high temperature measurement using neon-like xenon lines on EAST

Hu, R. J.,Chen, J.,Delgado-Aparicio, L. F.,Wang, Q. P.,Du, X. W.,Shen, J.,Yang, X. S.,Wang, F. D.,Fu, J.,Li, Y. Y.,Bitter, M.,Hill, K. W.,Pablant, N. A.,Lee, S. G.,Shi, Y. J.,Wan, B. N.,Ye, M. Y.,Lyu, American Institute of Physics 2018 Review of scientific instruments Vol.89 No.10

Research on the evolution path of start-up platform structure and user scale

Hu, H. Q.,Chen, Y. R.,Li, Y. 한국지능정보시스템학회 2022 한국지능정보시스템학회 학술대회논문집 Vol.2022 No.6

Based on the perspective of supply structure, this study investigates the evolution path of start-up platform structure and user scale. The results show that the competitive relationship model is stricter than the reciprocal relationship model in selecting suppliers. In the competitive relationship model, the competitive intensity will bring more threats to the relatively weak side of the platform, while the cross-network externality will bring more large-scale changes to the relatively superior side of the platform. In the reciprocal relationship model, the enhancement of complementarity intensity and the externality of the crossover network are conducive to the expansion of the platform scale. The evolution path of user scale is related to the intensity of externality of cross-network. In the competitive relationship model, low competitive strength is conducive to the expansion of platform synergy scale. and both the scale and growth rate of platform synergy increase with the increase of externality.

Simulation of band gap structures of 1D photonic crystal

R. L. Wang,J. Zhang,Q. F. Hu 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.-

We present a simple way to fabricate polyethylene methacrylate (PMMA) 1D periodic structures at the nanometer scale by using the calibrating sign of a digital scanning-electron microscope (SEM), and the transmission spectrum of a 1D photonic crystal consisting of PMMA layers and air layers with different incident angles of light was calculated by the transfer matrix method thus giving the photonic band- gap structures. It is found that the 1D photonic crystal appears to have a similar band gap structure both in TE and in TM mode, and the photonic band gap expands and the center wavelength of the forbidden bands blue-shifts with increasing incident angle of the light. This suggests that the larger the thickness of the medium layers forming the photonic crystal, the wider the photonic band gaps will be. We present a simple way to fabricate polyethylene methacrylate (PMMA) 1D periodic structures at the nanometer scale by using the calibrating sign of a digital scanning-electron microscope (SEM), and the transmission spectrum of a 1D photonic crystal consisting of PMMA layers and air layers with different incident angles of light was calculated by the transfer matrix method thus giving the photonic band- gap structures. It is found that the 1D photonic crystal appears to have a similar band gap structure both in TE and in TM mode, and the photonic band gap expands and the center wavelength of the forbidden bands blue-shifts with increasing incident angle of the light. This suggests that the larger the thickness of the medium layers forming the photonic crystal, the wider the photonic band gaps will be.

Effects of Lysine Intake during Middle to Late Gestation (Day 30 to 110) on Reproductive Performance, Colostrum Composition, Blood Metabolites and Hormones of Multiparous Sows

Zhang, R.F.,Hu, Q.,Li, P.F.,Xue, L.F.,Piao, X.S.,Li, D.F. Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.8

Lysine intake during gestation has a major impact on subsequent reproductive performance. The objective of this experiment was to determine the effect of lysine intake from mid-gestation until farrowing on the reproductive performance of multiparous sows. On day 30 of gestation, 200 Landrace${\times}$Large White sows were randomly assigned to one of four groups based on body weight and parity (n = 50). The gestation diets contained 0.46, 0.56, 0.65 or 0.74% lysine. Increasing dietary lysine concentration improved sow body condition at farrowing and increased litter weights (p<0.05). Dietary lysine level also had a significant effect on the dry matter (p<0.05) and protein content (p<0.05) of colostrum. Increased lysine intake increased serum insulin concentration (p<0.05) and there was a trend towards increased serum prolactin content (linear, p = 0.07). However, increased lysine tended to decrease blood urea N (quadratic, p = 0.05). These results suggest that higher lysine levels (0.65-0.75%) than those recommended by the National Research Council improved reproductive performance for multiparous gestating sows and this increase may be partially mediated through blood metabolites or metabolic hormone levels.

SPATIAL DISTRIBUTION OF THE SPIN VECTORS OF THE DISK GALAXIES IN THE VIRGO CLUSTER

YUAN Q. R.,HU F. X.,HE X. T. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1

In order to investigate the spatial orientation of the spin vectors of galaxies in the Virgo cluster, we carried out a detailed identification of all the certain and possible member disk galaxies with four UK Schmidt Telescope (UKST) III a-j direct plates digitized by the Automated Plate Measuring System (APM). As a result, a relatively large and complete database with no selection effect of the member galaxies has been established. We provide the APM measured values of the position angle (P.A.) and diameters at the isophotal level of 24.5 $m_j / arcsec^2$. Based on this newly generated database, an initial study on the spatial orientation of the spin vectors of galaxies in the Virgo cluster is shown.

Effects of Dietary Fructooligosaccharide on Digestive Enzyme Activities, Intestinal Microflora and Morphology of Growing Pigs

Xu, Z.R.,Zou, X.T.,Hu, C.H.,Xia, M.S.,Zhan, X.A.,Wang, M.Q. Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.12

One hundred and twenty-eight growing barrows (Jiaxing Black${\times}$Duroc${\times}$Landrace) at an average BW of 20.8 kg were allocated to four treatments for 42 days, each of which was replicated four times with eight pigs per replicate and used to investigate the effects of fructooligosaccharide (FOS) on digestive enzyme activities, intestinal microflora and morphology of growing pigs. The pigs received the same basal corn-soybean meal diet and FOS was added to the basal diet at 0, 2, 4, 6 g/kg diet at the expense of corn, respectively. As compared to control, supplementation with 4 and 6 g/kg FOS significantly improved average daily gain and feed efficiency. Addition of FOS enhanced the growth of Bifidobacterium and Lactobacillus, but inhibited Clostridium and Escherichia coli in the small intestinal and proximal colonic contents. Supplementation with 4 and 6 g/kg FOS significantly improved the activities of total protease, trypsin and amylase in the small intestinal contents. However, FOS had no significant effect on the activity of lipase in the small intestinal contents as well as the digestive enzymes in pancreas. Morphological measurement of jejunal mucosa did show response to consumption of FOS. Villus height and the villus height to crypt depth ratio at the jejunal mucosa were significantly higher with 4 and 6 g/kg FOS supplementation as compared to control.

Effects of phosphorus on the δ-Ni₃Nb phase precipitation and the stress rupture properties in alloy 718

Sun,W.R.,Lee,J.H.,Guo,S.R.,Yoo,Y.S.,Choe,S.J.,Park,N.K.,Hu,Z.Q. 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1

The effects of phosphorus on the phase transformation and stress rupture properties of alloy 718 were investigated. The nucleation of δ- phase, which does not contain phosphorus, was suppressed by the enrichment of phosphorus at grain boundaries. A low level of phosphorus resulted in the formation of faults-containing film-like δ- phase along the grain boundaries, while a higher level of phosphorus favored the long lath-like δ- phase precipitation. Phosphorus greatly prolonged the stress rupture life of the alloy in the range of 0.0008-0.013 wt.% while it reduced the stress rupture life in the range of 0.013-0.049 wt.% The effect of phosphorus in the stress rupture properties was closely related to its interaction with oxygen. Phosphorus atoms, in the range of 0.0008-0.013 wt.%, enhanced the resistance to oxygen intrusion along the grain boundaries, protected the grain boundaries from decohesion by oxygen atoms and oxidation, and subsequently prolonged the rupture life of the alloy. The protection effect of p is clearly demonstrated by the phenomenon that the crack initiation site was shifted from the surface to the center in the stress-ruptured samples with increasing addition of P. Over 0.013 wt.%, the protection effect of phosphorus is excessive and phosphorus began to display its inherent effect of damaging the grain boundary strength ; the stress rupture life of the alloy was reduced accordingly. Maximum stress rupture life was thus obtained at ∼0.013 wt.% P ⓒ 1998 Elsevier Science S.A. All rights reserved.

Projected climate regime shift under future global warming from multi-model, multi-scenario CMIP5 simulations

Feng, S.,Hu, Q.,Huang, W.,Ho, C.H.,Li, R.,Tang, Z. Elsevier 2014 Global and planetary change Vol.112 No.-

This study examined shifts in climate regimes over the global land area using the Koppen-Trewartha (K-T) climate classification by analyzing observations during 1900-2010, and simulations during 1900-2100 from twenty global climate models participating in Phase 5 of the Coupled Model Inter-comparison Project (CMIP5). Under the Intergovernmental Panel on Climate Change Representative Concentration Pathways 8.5 (RCP8.5) scenario, the models projected a 3<SUP>o</SUP>-10<SUP>o</SUP>C warming in annual temperature over the global land area by the end of the twenty-first century, with strong (moderate) warming in the high (middle) latitudes of the Northern Hemisphere and weaker warming in the tropics and the Southern Hemisphere. The projected changes in precipitation vary considerably in space and present greater uncertainties among the models. Overall, the models are consistent in projecting increasing precipitation over the high-latitude of the Northern Hemisphere, and reduced precipitation in the Mediterranean, southwestern North America, northern and southern Africa and Australia. Based on the projected changes in temperature and precipitation, the K-T climate types would shift toward warmer and drier climate types from the current climate distribution. Regions of temperate, tropical and dry climate types are projected to expand, while regions of polar, sub-polar and subtropical climate types are projected to contract. The magnitudes of the projected changes are stronger in the RCP8.5 scenario than the low emission scenario RCP4.5. On average, the climate types in 31.4% and 46.3% of the global land area are projected to change by the end of the twenty-first century under RCP4.5 and RCP8.5 scenarios, respectively. Further analysis suggests that changes in precipitation played a slightly more important role in causing shifts of climate type during the twentieth century. However, the projected changes in temperature play an increasingly important role and dominate shifts in climate type when the warming becomes more pronounced in the twenty-first century.