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( P. Kumaresan ),( P. Somasundaram ),( K. Ashok Kumar ),( S. Raje Urs ) 한국잠사학회 2006 International Journal of Industrial Entomology Vol.13 No.2
Heterosis was studied involving two multivoltine silkworm breeds viz, APM1 and SLKSPM through rearing and isozyme analysis. A positive significant heterotic effect was observed in fecundity, hatching % and survivability. The heterobeltiosis was observed only in fecundity and hatching %. Isozyme analysis of α-esterase showed variation in loci and allelic expression. The allele with heterozygosity (Est-212) was observed at the Est-2 locus in F1 progeny. Est-3 was observed in F1 progeny, whereas it was completely absent in both parental lines. The present study suggests that the markers (Est-212 and Est-3) targeted for introgression may be useful for the improvement of fecundity and survivability as the phenomenon of heterosis was observed only in F1 progeny.
Kumaresan P.,Somasundaram P.,Kumar K. Ashok,Urs S. Raje Korean Society of Sericultural Science 2006 International Journal of Industrial Entomology Vol.13 No.2
Heterosis was studied involving two multivoltine silkworm breeds viz, APM1 and SLKSPM through rearing and isozyme analysis. A positive significant heterotic effect was observed in fecundity, hatching % and survivability. The heterobeltiosis was observed only in fecundity and hatching %. Isozyme analysis of ${\alpha}-esterase$ showed variation in loci and allelic expression. The allele with heterozygosity $(Est-2^{12})$ was observed at the Est-2 locus in $F_1$ progeny. Est-3 was observed in $F_1$ progeny, whereas it was completely absent in both parental lines. The present study suggests that the markers ($Est-2^{12}$ and Est-3) targeted for introgression may be useful for the improvement of fecundity and survivability as the phenomenon of heterosis was observed only in $F_1$ progeny.
B. Somasundaram,K.T. Anand,D. Kirubakaran,P. Ganeshan,Sathish Kannan,A.H. Seikh,A. Ghosh 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.4
Metal-based composites, such as those used in the aerospace and automotive industries, are becoming increasingly popular dueto their intrinsic advantages like higher strength-to-weight ratios and less wear rates. An aluminium 7475 alloy based on MMCwas tested using the Taguchi design of the experiment. The major goal is to use the Taguchi method to anticipate the bestparameters for castings with the highest tensile strength and hardness. Good quality castings can only be made with precisecontrol of the process parameters. Stir casting was employed to make test samples with varying reinforcement weightpercentages, stirring speeds, and processing temperatures. Analytical variance and orthogonal arrays were used to explore theinfluence of process factors on the desired attributes. The Taguchi method was used to identify the best settings for maximizingthe mechanical characteristics of composites. The fundamental objective of this investigation is to find how various parameterscan be altered to produce defect-free castings with the necessary tensile strength and hardness for certain applications. TheTaguchi optimization method was demonstrated by conducting a test at the optimal level of processing parameters.
Seeking the unseen: Localization and surgery for an occult sporadic insulinoma
Duminda Subasinghe,Sonali Sihindi Chapa Gunatilak,Vihara Erangika Dassanyake,Chaminda Garusinghe,Eranga Ganewaththa,Chinthaka Appuhamy,Noel P. Somasundaram,Sivasuriya Sivaganesh 한국간담췌외과학회 2020 Annals of hepato-biliary-pancreatic surgery Vol.24 No.2
Insulinomas are rare pancreatic neuroendocrine tumours and the commonest cause for endogenous hyperinsulinaemic hypoglycemia. Small tumours are not easily detected by conventional cross-sectional imaging making localization prior to surgical removal a challenge. Selective arterial calcium stimulation is an invaluable adjunct to localization in such circumstances. This is further supplemented by intraoperative ultrasonography. A 39-year-old male was referred with features of Whipple’s triad of 10 months duration. Clinical and biochemical evaluation including C-peptide and serum insulin levels during supervised hypoglycemia concluded endogenous hyperinsulinaemia as the underlying aetiology. Contrast CT and MRI of the abdomen failed to localize the tumour. Selective arterial calcium stimulation localized the lesion in distal pancreas. During the surgery, tumour was further localized to the tail of the pancreas using intraoperative ultrasonography and enucleated. Histology confirmed an insulinoma and patient made an unremarkable recovery and was well more than a year after the surgery.