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Valuations on Ternary Semirings
Pal, Sumana,Sircar, Jayasri,Mondal, Pinki Department of Mathematics 2022 Kyungpook mathematical journal Vol.62 No.1
In the present study, we introduce a valuation of ternary semiring on an ordered abelian group. Motivated by the construction of valuation rings, we study some properties of ideals in ternary semiring arising in connection with the valuation map. We also explore ternary valuation semirings for a noncommuative ternary division semiring. We further consider the notion of convexity in a ternary semiring and how it is reflected in the valuation map.
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Influence of Different Treatment Regimes of Phytoecdysteroid on Silkworm, Bombyx mori L.
Kumar S. Nirmal,Nair K. Sashindran,Mondal Sumana Korean Society of Sericultural Science 2007 International Journal of Industrial Entomology Vol.14 No.1
The response of silkworm, Bombyx mori L. to phytoecdysteroid (PE) when administered at different ages of $5^{th}$ instar was studied in the popular bivoltine ($CSR2{\times}CSR4$) and multi${\times}$bivoltine ($PM{\times}CSR2$) silkworm hybrids, reared on the Victory-1 variety of mulberry leaves. PE was administered to $5^{th}$ instar silkworm per os at a rate of $250{\mu}g$ per 100 larvae to different batches of silkworm at 0, 24, 48, 72, 96, 120, 144 hrs and at the onset of cocoon spinning when a few larvae were ripe. The larval and mounting duration, cocoon yield and cocoon characters were influenced by PE. The intensity of influence was dependent on the time of application. The larvae treated at the beginning of the instar, improved the economic traits significantly with a marginal increase in larval duration. In the larvae treated at the middle of the instar, larval duration was shortened remarkably but the economic traits were adversely affected. This particular treatment can become a good management strategy in the case of mulberry leaf shortage or disease incidence. In the larvae treated at the onset of cocoon spinning, the mounting duration was substantially reduced without much effect on the cocoon traits which would be a big benefit in commercial sericulture. The physiological significance of varied response of silkworm to PE administration is discussed.
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Influence of Different Treatment Regimes of Phytoecdysteroid on Silkworm, Bombyx mori L.
( S. Nirmal Kumar ),( K. Sashindran Nair ),( Sumana Mondal ) 한국잠사학회 2007 International Journal of Industrial Entomology Vol.14 No.1
The response of silkworm, Bombyx mori L. to phytoecdysteroid (PE) when administered at different ages of 5th instar was studied in the popular bivoltine (CSR2 × CSR4) and multi x bivoltine (PM × CSR2) silkworm hybrids, reared on the Victory-1 variety of mulberry leaves. PE was administered to 5th instar silkworm per os at a rate of 250 μg per 100 larvae to different batches of silkworm at 0, 24, 48, 72, 96, 120, 144 hrs and at the onset of cocoon spinning when a few larvae were ripe. The larval and mounting duration, cocoon yield and cocoon characters were influenced by PE. The intensity of influence was dependent on the time of application. The larvae treated at the beginning of the instar, improved the economic traits significantly with a marginal increase in larval duration. In the larvae treated at the middle of the instar, larval duration was shortened remarkably but the economic traits were adversely affected. This particular treatment can become a good management strategy in the case of mulberry leaf shortage or disease incidence. In the larvae treated at the onset of cocoon spinning, the mounting duration was substantially reduced without much effect on the cocoon traits which would be a big benefit in commercial sericulture. The physiological significance of varied response of silkworm to PE administration is discussed.
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