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Articles by C. Yang
Total Records ( 3 ) for C. Yang
  R.F. Ramadhan , C. Yang , Wizna , Y. Marlida and Mirzah
  Background and Background: Bovine blood is a livestock by-product that can be used as a protein source for livestock, particularly when incorporated in broiler rations. This study was conducted to investigate the effects of amino acids in Bacillus amyloliquefaciens-fermented mixtures of bovine blood and coconut pulp (blood meal) on growth performance, blood cholesterol and erythrocyte content in broilers. Methodology: A total of 100 six day-old CP 707 (Strain Cobb) broilers were divided into 5 experimental groups with 4 replicates of 5 broilers. The experimental groups received rations supplemented with 0, 5, 10, 15 and 20% blood meal that substituted for fish meal or soybean meal. The experimental period was 5 weeks. Treatment effects on broiler performance parameters such as final body weight, final weight gain, average daily gain, feed intake, average abdominal fat and Feed Conversion Ratio (FCR), total serum cholesterol and erythrocyte count, as well as the return on investment were determined. Results: The group fed rations supplemented with 10% blood meal showed final body weight, final weight gain and FCR of 1,172, 1,035 and 1.75 g, respectively, which was significantly higher (p<0.05) than that for the other treatments. Rations with 10% blood meal also had the best return on investment ($0.92) relative to the other groups. Conclusion: A mixture of 10% bovine blood and coconut pulp fermented with Bacillus amyloliquefaciens can be used in broiler feed without adversely affecting broiler performance and can replace 47% of total fishmeal and 53% of soybean meal in broiler rations.
  S. M. Owen , C. Yang , T. Spira , C. Y. Ou , C. P. Pau , B. S. Parekh , D. Candal , D. Kuehl , M. S. Kennedy , D. Rudolph , W. Luo , N. Delatorre , S. Masciotra , M. L. Kalish , F. Cowart , T. Barnett , R. Lal and J. S. McDougal
  Serodiagnosis of human immunodeficiency virus (HIV) infection in the United States has traditionally relied on a sequential two-test algorithm: an initial screen with an enzyme immunoassay (EIA) and reflex testing of EIA-reactive specimens with a more specific supplemental test such as Western blotting or immunofluorescence. The supplemental tests are tedious, subjective, and expensive. In addition, there have been major improvements in the performance and accuracy of the EIA tests as well as the introduction of rapid serologic tests (RT) and HIV nucleic acid amplification tests (NAAT). Related to these improvements is the possibility that alternative algorithms using combinations of currently approved HIV tests may function as well as if not better than the current algorithm, with more flexibility, improved accuracy, and lower cost. To this end, we evaluated the performance of 12 currently licensed tests and 1 in-house HIV test (6 EIA, 4 RT, and 3 NAAT) on panels of plasma samples from HIV-infected (n = 621 HIV type 1 [HIV-1] and 34 HIV-2) and uninfected (n = 513) people and of sequential specimens from people early in seroconversion (183 specimens from 15 patients). Test combinations were analyzed in two dual-test (sensitivity-optimized and specificity-optimized) algorithms and in a three-test (tie-breaking) algorithm, and performance was compared to the conventional algorithm. The results indicate that alternative algorithm strategies with currently licensed tests compare favorably with the conventional algorithm in detecting and confirming established HIV infection. Furthermore, there was a lower frequency of discordant or indeterminate results that require follow-up testing, and there was improved detection of early infection.
  W. Wan , C. Yang , H. Z. Jiang , H. M. Deng , J. Wang and J. Hao
  The synthesis and mesomorphic behaviour of a series of liquid crystals incorporating a trans-decalin ring and two aromatic rings linked by esters are reported. Structures of the new compounds were confirmed by IR, 1H NMR, 13C NMR and elemental analysis. A single crystal of compound 18 was prepared to confirm the trans-conformation of the decalin ring. Liquid crystalline properties were investigated by differential scanning calorimetry and polarising optical microscopy. All of the synthesised compounds except 17e are found to show only an enantiotropic nematic phase over a wide temperature range.
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