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Effects of garlic and black grape extracts on the activity of adenosine deaminase from cancerous and noncancerous human urinary
      
A black-scholes formula for option pricing with dividends
      
We obtain a Black-Scholes formula for the arbitrage-free pricing of European Call options with constant coefficients when the underlying stock generates dividends.
      
The impact of different interference substrate materials for improving the color travel effect was studied, and the influence of white and black background on the hue and the color travel effect were studied.
      
Nutrient Dynamics of Fine Roots in the Mixed Plantation of Poplar and Black Locust
      
The mixed plantation of poplar (Populus spp.) and black locust (Robinia pseudoacacia) is one of the typical mixed stands with nitrogen-fixing and non-nitrogen-fixing species.
      
canadansis) and 22-year-old black locust on sandy sites along the Chaobai River in Beijing.
      
Results showed that: (1) the fine root decomposition of Canadian poplar and black locust trees was different.
      
Concentrations of N, P and K gradually decreased in the fine roots of black locust during decomposition.
      
(2) During decomposition, the annual return amount of N, K and Mg in fine roots of black locust was highest, followed by the mixed fine roots of the two species, and then the fine roots of poplar.
      
The return amount of P in poplar fine roots was greater than that of black locust, which could improve the P nutrient of black locust trees.
      
The determination of the mass of black holes in our universe is crucial to understand their physics nature but is a great challenge to scientists.
      
In this paper I briefly review some methods that are currently used to estimate the mass of black holes, especially those in X-ray binary systems and in galactic nuclei.
      
Our recent progress in improving the mass estimates of supermassive black holes in active galactic nuclei by involving some empirical relations is presented.
      
Finally I point out the similarities and common physics in Galactic black hole X-ray binaries and active galactic nuclei, and demonstrate that the black hole mass estimation is very much helpful to understand the accretion physics around black holes.
      
ocellatus showed symptoms of loss of appetite, lack of movement, black skin, and weight loss and eventually died.
      
This approach effectively enables "separation of concerns" in high-level architecture design, and facilitates black-box reuse of COTS components.
      
Tectonic and eustatic control on the distribution of black-shale source beds in the Wufeng and Longmaxi formations (Ordovician-S
      
It is known that high-quality, black-shale source rocks occur in the uppermost Ordovician Wufeng Formation and in the lowermost Silurian Longmaxi Formation in South China.
      
The black shales also contain K-bentonites from explosive, felsic-intermediate volcanism, the distribution of which also supports orogeny to the southeast.
      
 

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