نتایج جستجو برای: nutrient density
تعداد نتایج: 475466 فیلتر نتایج به سال:
We examined the relative importance of bottom-up (nutrient availability) and top-down (grazing) factors in regulating phytoplankton assemblages in tidepools on a rocky shore near Halifax, Nova Scotia, Canada. We manipulated the concentration of nutrients and density of micrograzers in pools in the h ~ g h intertidal and splash zones in 3 repeated, 1 to 2 wk experiments in November 1992 and June...
This study was conducted to investigate the effects of protease supplementation and different nutrient density diets in growing-finishing pigs. A total one hundred-eight crossbred growing pigs ([Landrace × Yorkshire] Duroc) with an initial body weight (BW; 18.74 ± 3.46 kg) were used for 15 weeks. Pigs randomly assigned six dietary treatments 6 replicates 3 per pen a 2 factorial through followin...
We present a microfluidic bioreactor for culturing high-density arrays of hepatocytes in a tissue-like micro-architecture. The microfluidic environment mimicked physiological liver mass transport, enabling sustained culture of high density cells (>2,000 cells/mm(2)) without nutrient limitation for over 1 week. The key feature of this design was a microporous microfluidic barrier that formed a s...
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