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Gupta, P.S.P.,Nandi, S.,Ravindranatha, B.M.,Sarma, P.V. 아세아태평양축산학회 2001 Animal Bioscience Vol.14 No.5
The effect of replacement of in vitro maturation medium completely with the buffalo follicular fluid (buFF) on in vitro oocyte maturation of buffalo oocytes was studied. 5 to 8 buffalo cumulus oocyte complexes were cultured in a single drop with each of the eight media studied i.e., M199+steer serum (10% v/v), M199+steer serum (10% v/v)+PMSG, M199+buFF (10% v/v), M199+buFF (10% v/v)+PMSG, M199+buFF (50% v/v), M199+buFF (50% v/v)+ PMSG, buFF (100%) and buFF+PMSG at $39^{\circ}C$ and 5% $CO_2$ in air for 24 h. Supplementation of M199 with Steer serum alone resulted in IVM rate of 35% only. When the above medium was supplemented with PMSG, the maturation rate rallied to 82%. Significant increase in the maturation rates were observed when M199 was supplemented with increasing levels of buFF. A further increase in the maturation rate was also obtained when PMSG was incorporated into the medium of M199 supplemented with buFF. The rate of maturation was to the tune of 91% when oocytes were matured in buFF alone which was increased non significantly on the addition of PMSG. Highest maturation rate (97%) obtained with M199+buFF (50%v/v)+PMSG did not differ significantly from that obtained by either M199+buFF (10%v/v)+PMSG or buFF+PMSG. It is suggested that buFF alone without any supplementation can form the effective in vitro maturation medium for buffalo oocytes.
h-almost Ricci Solitons on Generalized Sasakian-space-forms
Doddabhadrappla Gowda, Prakasha,Amruthalakshmi Malleshrao, Ravindranatha,Sudhakar Kumar, Chaubey,Pundikala, Veeresha,Young Jin, Suh Department of Mathematics 2022 Kyungpook mathematical journal Vol.62 No.4
The aim of this article is to study the h-almost Ricci solitons and h-almost gradient Ricci solitons on generalized Sasakian-space-forms. First, we consider h-almost Ricci soliton with the potential vector field V as a contact vector field on generalized Sasakian-space-form of dimension greater than three. Next, we study h-almost gradient Ricci solitons on a three-dimensional quasi-Sasakian generalized Sasakian-space-form. In both the cases, several interesting results are obtained.
Riemann solitons on $(\kappa, \mu)$-almost cosymplectic manifolds
Prakasha D. Gowda,Devaraja M. Naik,Amruthalakshmi M. Ravindranatha,Venkatesha Venkatesha 대한수학회 2023 대한수학회논문집 Vol.38 No.3
In this paper, we study almost cosymplectic manifolds with nullity distributions admitting Riemann solitons and gradient almost Riemann solitons. First, we consider Riemann soliton on $(\kappa, \mu)$-almost cosymplectic manifold $M$ with $\kappa<0$ and we show that the soliton is expanding with $\lambda = \frac{\kappa}{2n-1}(4n-1)$ and $M$ is locally isometric to the Lie group $G_\rho$. Finally, we prove the non-existence of gradient almost Riemann soliton on a $(\kappa, \mu)$-almost cosymplectic manifold of dimension greater than 3 with $\kappa < 0$.