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Articles by N. Narkkong
Total Records ( 4 ) for N. Narkkong
  W. Aengwanich , N. Narkkong and A. Tanomthong
  Blood samples from eastern sarus cranes housed at Nakhonratchasima Zoo, Nakhon Ratchasima, northeastern, Thailand were collected in January, 2007. A morphological observation of the thrombocytes was examined using scanning electron microscopy. The results revealed the following information: The thrombocytes of the eastern sarus cranes are tiny cells and they display a smooth, irregular, spherical and pseudopodic membrane surface with long microfilament protrusions from their membrane. The thrombocytes of the eastern sarus cranes use these microfilaments to attach to other blood cells for movement and blood clumping. The long microfilaments were not found in fish, reptiles and other domestic birds. The morphological structure of the thrombocyte, the microfilaments and the activities of the eastern sarus crane has not been reported previously.
  S. Ponsen , C. Talabmook , N. Narkkong and W. Aengwanich
  The blood cell characteristics, blood cell dimension and hematological values of sand lizards were studied in eighty sand lizards during March-July, 2006. These lizards were obtained from provinces in the Northeastern part of Thailand. The results gave following information: The blood cell characteristics of sand lizards presented distinct morphology. The blood cell characteristics of sand lizards were similar to those of other reptiles. Red blood cell width and length, diameter of lymphocyte, monocytes and heterophils of the male sand lizard were significantly larger than those of the female. On the other hand, the diameter of male basophil was significantly less than that of the female. Packed cell volume, hemoglobin concentration, total red blood cell count and heterophil of the male sand lizards were significantly higher than those of the female. In contrast, the basophil and eosinophil of the male sand lizards were significantly lower than those of the female. These findings indicated that sex influenced the hematological values of sand lizards.
  W. Aengwanich , N. Narkkong and A. Tanomthong
  Y. Srisuwan , N. Narkkong and P. Srihanam
  This study aims to prepare Eri Silk Fibroin (SF) solution and construct of its film. The Eri cocoons were firstly removed of sericin and then dissolved by 6 M Ca(NO3)2. The SF solution was dialyzed before measurement of silk percentage by weight. The solvate protein was then taken to prepare of SF film using 0.5 and 1% weight. The 10 mL of SF solution was cast on the polystyrene plates, left in room temperature for 2 days. The obtained SF films were then observed under Scanning Electron Microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) for morphological and conformational studies, respectively. The results found that Eri SF films were rougher surfaces than Bombyx mori (B. mori) SF film. In addition, the film of 0.5% weight SF solution was also rougher surfaces than 1% weight. It contained the α-helix structure in higher ratio than 1% weight film since the 1% weight SF solution film composed in higher β-sheet structure. However, the later conformation could affect the SF film to be more hard and brittle than low percent weight content.
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