• Title/Summary/Keyword: Ministry of Science

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Association of UDP-galactose-4-epimerase with milk protein concentration in the Chinese Holstein population

  • Li, Cong;Cai, Wentao;Liu, Shuli;Zhou, Chenghao;Cao, Mingyue;Yin, Hongwei;Sun, Dongxiao;Zhang, Shengli;Loor, Juan J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.11
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    • pp.1725-1731
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    • 2020
  • Objective: An initial RNA-Sequencing study revealed that UDP-galactose-4-epimerase (GALE) was one of the most promising candidates for milk protein concentration in Chinese Holstein cattle. This enzyme catalyzes the interconversion of UDP-galactose and UDP-glucose, an important step in galactose catabolism. To further validate the genetic effect of GALE on milk protein traits, genetic variations were identified, and genotypes-phenotypes associations were performed. Methods: The entire coding region and the 5'-regulatory region (5'-UTR) of GALE were re-sequenced using pooled DNA of 17 unrelated sires. Association studies for five milk production traits were performed using a mixed linear animal model with a population encompassing 1,027 Chinese Holstein cows. Results: A total of three variants in GALE were identified, including two novel variants (g.2114 A>G and g.2037 G>A) in the 5'-UTR and one previously reported variant (g.3836 G>C) in an intron. All three single nucleotide polymorphisms (SNPs) were associated with milk yield (p<0.0001), fat yield (p = 0.0006 to <0.0001), protein yield (p = 0.0232 to <0.0001) and protein percentage (p<0.0001), while no significant associations were detected between the SNPs and fat percentage. A strong linkage disequilibrium (D' = 0.96 to 1.00) was observed among all three SNPs, and a 5 Kb haplotype block involving three main haplotypes with GAG, AGC, and AGG was formed. The results of haplotype association analyses were consistent with the results of single locus association analysis (p<0.0001). The phenotypic variance ratio above 3.00% was observed for milk protein yield that was explained by SNP-g.3836G >C. Conclusion: Overall, our findings provided new insights into the polymorphic variations in bovine GALE gene and their associations with milk protein concentration. The data indicate their potential uses for marker-assisted breeding or genetic selection schemes.

The role of The Ministry of Commerce and The Capital Market Authority (CMA) in Protecting Shareholders and Holding Directors accountable in Saudi's Corporations

  • Alzhrani, Abdulrahman AA
    • International Journal of Computer Science & Network Security
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    • v.22 no.8
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    • pp.187-196
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    • 2022
  • The law gives the Ministry of Commerce the power of monitoring, oversight, and accountability for corporations in general. However, Article 219 of the Companies Law has made oversight of listed companies within the jurisdiction of the Capital Market Authority, but this exception, in the author's opinion, is not clear because the law obligated the Ministry of Commerce to monitor and account for joint-stock companies, whether they were listed or not included in some cases.

Path Coefficient Analysis on Major Silk Quality Characteristics of the Silkworm, Bombyx mori L.

  • Zhao, Quio-ling;Long Li;Wei, Zhao-Jun;Zhang, Zhi-Fang;Shen, Xing-Jia
    • International Journal of Industrial Entomology and Biomaterials
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    • v.5 no.1
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    • pp.135-139
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    • 2002
  • By means of correlation analysis and path coefficient analysis, 18 characteristics of 325 conserved silkworm races were studied for the selecting efficiency on main silk quality characteristics. The result showed that selecting lines with heavier cocoon weight are beneficial to raise the weight of have. Choosing strains with higher cocoon shell percentage, longer filament length and better reelability percentage is good for increasing non-broken filament length. Selecting lines with medium daily weight of have produced in the fifth instar, medium cocoon shell percentage and simultaneously selecting heavier cocoon shell weight are favorable to promote reelability percentage. Choosing strains with heavier cocoon weight, higher cocoon shell percentage, heavier daily weight of bave produced in the fifth instar and heavier weight of bave but shorter filament length may hopefully breed out a race with thick filament size. And selecting strains with heavier weight of have and fine filament size are beneficial to increase filament length. Selecting lines with higher cocoon shell percentage and heavier weight of bave are favorable to raise raw silk percentage of cocoon. There are no significant direct or indirect correlation coefficient between viability and major characteristics of silk quality. It is, therefore, feasible to breed a silkworm race with excellent vitality and good silk quality as well.

The Effect of H content in Si Precursor on the Performance of Poly-Si Crystallized by Pulsed YAG2${\omega}$ Laser on Soft Substrate

  • Li, Juan;Ying, Yao;Meng, Zhiguo;Chunya, Wu;Xiong, Shaozhen;Kwok, Hoi-Sing
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.1604-1607
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    • 2009
  • YAG laser crystallization of Si-based thin film deposited on plastic substrate has been studied. The Si-based thin films as crystallization precursor are with varied hydrogen (H) content. The effect of the H content on the crystallinity of the resulted poly-Si film has been investigated. The experimental results of the poly-Si crystallized by doublefrequency YAG laser shows that the initial dehydrogenation process could be left out if ${\mu}c$-Si was adopted as the crystallization precursor. The YAG laser annealing condition on plastic substrate and the crystallization results have been discussed in the paper.

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Radiation damage in helium ion-irradiated reduced activation ferritic/martensitic steel

  • Xia, L.D.;Liu, W.B.;Liu, H.P.;Zhang, J.H.;Chen, H.;Yang, Z.G.;Zhang, C.
    • Nuclear Engineering and Technology
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    • v.50 no.1
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    • pp.132-139
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    • 2018
  • Nanocrystalline reduced activation ferritic/martensitic (RAFM) steel samples were prepared using surface mechanical attrition treatment (SMAT). Un-SMATed and SMATed reduced activation ferritic/martensitic samples were irradiated by helium ions at $200^{\circ}C$ and $350^{\circ}C$ with 2 dpa and 8 dpa, respectively, to investigate the effects of grain boundaries (GBs) and temperature on the formation of He bubbles during irradiation. Experimental results show that He bubbles are preferentially trapped at GBs in all the irradiated samples. Bubble denuded zones are clearly observed near the GBs at $350^{\circ}C$, whereas the bubble denuded zones are not obvious in the samples irradiated at $200^{\circ}C$. The average bubble size increases and the bubble density decreases with an increasing irradiation temperature from $200^{\circ}C$ to $350^{\circ}C$. Both the average size and density of the bubbles increase with an increasing irradiation dose from 2 dpa to 8 dpa. Bubbles with smaller size and lower density were observed in the SMATed samples but not in the un-SMATed samples irradiated in the same conditions, which indicate that GBs play an important role during irradiation, and sink strength increases as grain size decreases.

Distinct mutations in MLH1 and MSH2 genes in Hereditary Non-polyposis Colorectal Cancer (HNPCC) families from China

  • Wei, Wenqian;Liu, Fangqi;Liu, Lei;Li, Zuofeng;Zhang, Xiaoyan;Jiang, Fan;Shi, Qu;Zhou, Xiaoyan;Sheng, Weiqi;Cai, Sanjun;Li, Xuan;Xu, Ye;Nan, Peng
    • BMB Reports
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    • v.44 no.5
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    • pp.317-322
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    • 2011
  • Hereditary non-polyposis Colorectal Cancer (HNPCC) is an autosomal dominant inheritance syndrome. HNPCC is the most common hereditary variant of colorectal cancer (CRC), which accounts for 2-5% CRCs, mainly due to hMLH1 and hMSH2 mutations that impair DNA repair functions. Our study aimed to identify the patterns of hMSH2 and hMLH1 mutations in Chinese HNPCC patients. Ninety-eight unrelated families from China meeting Amsterdam or Bethesda criteria were included in our study. Germline mutations in MLH1 and MSH2 genes, located in the exons and the splice-site junctions, were screened in the 98 probands by direct sequencing. Eleven mutations were found in ten patients (11%), with six in MLH1 (54.5%) and five in MSH2 (45.5%) genes. One patient had mutations in both MLH1 and MSH2 genes. Three novel mutations in MLH1 gene (c.157_160delGAGG, c.2157dupT and c.-64G>T) were found for the first time, and one suspected hotspot in MSH2 (c.1168C>T) was revealed.

Correlates of Susceptibility to Smoking among Secondary School Students in Kota Tinggi District, Johor, Malaysia

  • Hock, Lim Kuang;Ghazali, Sumarni Mohd;Cheong, Kee Chee;Kuay, Lim Kuang;Li, Lim Hui;Ying, Chan Ying;Huey, Tay Chien;Yee, Lai Wai;Ying, Ong Shiau;Yen, Yeo Lay;Abdullah, Norhamimah;Wymen, Seet;Ibrahim, Normala
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.11
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    • pp.6971-6978
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    • 2013
  • Background: Smoking among adolescents has been linked to a variety of adverse and long term health consequences. "Susceptibility to smoking" or the lack of cognitive commitment to abstain from smoking is an important predictor of adolescent smoking. In 2008, we conducted a study to determine the psycho-sociological factors associated with susceptibility to smoking among secondary school students in the district of Kota Tinggi, Johor. Materials and Methods: Two thousand seven hundred students were randomly selected by proportional stratified sampling. Analyses on 1,736 non-smoking students revealed that prevalence of adolescents susceptible to smoking was 16.3%. Results: Male gender (aOR=2.05, 95%CI= 1.23-3.39), poor academic achievement (aOR 1.60, 95%CI 1.05-2.44), ever-smoker (aOR 2.17, 95%CI 1.37-3.44) and having a smoking friend (aOR 1.76, 95%CI 1.10-2.83) were associated with susceptibility to smoking, while having the perception that smoking prohibition in school was strictly enforced (aOR 0.55, 95%CI 0.32-0.94), and had never seen friends smoking in a school compound (aOR 0.59, 95%CI 0.37-0.96) were considered protective factors Conclusions: These results indicate that follow-up programmes need to capitalise on the modifiable factors related to susceptibility to smoking by getting all stakeholders to be actively involved to stamp out smoking initiation among adolescents.

Diagnostic Value of Interleukin 21 and Carcinoembryonic Antigen Levels in Malignant Pleural Effusions

  • Bunjhoo, Hansvin;Wang, Zheng-Yun;Chen, Hui-Long;Cheng, Sheng;Xiong, Wei-Ning;Xu, Yong-Jian;Cao, Yong
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.7
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    • pp.3495-3499
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    • 2012
  • The aim of this study was to evaluate the diagnostic value of interleukin 21(IL-21) and carcinoembryonic antigen (CEA) in tuberculous pleural effusions (TPEs) and malignant pleural effusions (MPEs). Pleural effusion samples from 103 patients were classified on the basis of diagnosis as TPE (n=51) and MPE (n=52). The concentration of IL-21 was determined by ELISA. Lactate dehydrogenase (LDH), adenosine dehydrogenase (ADA) and CEA levels were also determined in all patients. A significant difference was observed in the levels of ADA and CEA (P<0.01), but not in the levels of LDH (P>0.05) between TPE and MPE. The concentration of IL-21 in MPE was significantly higher compared to TPE (P<0.01). With a threshold value of 4.32 pg/ml, IL-21 had a sensitivity of 76.9% (40/52) and a specificity of 80.4% (41/51). Combined detection of IL-21 and CEA had a sensitivity of 69.2% (36/52) and a specificity of 92.2% (47/51). These two markers can contribute to the differential diagnosis of MPEs.