biharmonic surfaces in euclidean space $mathbb{e}^3$ are firstly studied from a differential geometric point of view by bang-yen chen, who showed that the only biharmonic surfaces are minimal ones. a surface $x : m^2rightarrowmathbb{e}^{3}$ is called biharmonic if $delta^2x=0$, where $delta$ is the laplace operator of $m^2$. we study the $l_k$-biharmonic spacelike hypersurfaces in the $4$-dimen...

objective(s):bacopa monnieri (bm),a traditional ayurvedic medicine,is a well-known memory enhancer. we have explored the role of bm against decabrominated diphenyl ether (pbde-209)-induced alterations in neonate and young female mice. materials and methods: mice were orally administered with b. monnieri at the doses of 40, 80 or 120 mg/kg body weight along with pbde-209 (20 mg/kg body weight) f...

introduction: obesity and visceral fat accumulation after menopause are associated with insulin resistance and cardiovascular diseases. we investigated the interactive effect of aerobic-resistance training and estrogen replacement therapy on visceral fat, omentin-1 and homa-ir in ovariectomized rats. materials and methods: fifty female wistar rats were ovariectomized (ovx) and divided into 5 gr...

introduction: 3-4, methylenedioxymethamphetamine (mdma) causes apoptosis in nervous system and several studies suggest that oxidative stress contributes to mdma-induced neurotoxicity. the aim of this study is to examine the effects of n-acetyl-l-cystein (nac) as an antioxidant on mdma-induced apoptosis. methods: 21 sprague dawley male rats (200-250mg) were treated with mdma (2×0,5mg/kg) or mdma...

Biharmonic surfaces in Euclidean space $mathbb{E}^3$ are firstly studied from a differential geometric point of view by Bang-Yen Chen, who showed that the only biharmonic surfaces are minimal ones. A surface $x : M^2rightarrowmathbb{E}^{3}$ is called biharmonic if $Delta^2x=0$, where $Delta$ is the Laplace operator of $M^2$. We study the $L_k$-biharmonic spacelike hypersurfaces in the $4$-dimen...

precise application of the n fertilizer rate is critical to achieve maximum yield. in major regions, empirical methods were used for determining n fertilizer requirement. these methods cannot take into account variation in management and environmental conditions on determining fertilizer requirement. crop simulation models can provide an alternative means of determining the optimum crop n requi...