Celery (Apium graveolens L.) is a plant that belongs to the Apiaceae family and widely used as medical for low blood pressure, heart tonic, prevent cardiovascular disease. This study aims obtain flavonoid compounds, identify, test antioxidant activity of compounds crude extracts from celery leaves. The research procedures consisted four steps, first which was preliminary test. second step invol...

We recently demonstrated the occurrence of a sucrose-enhanced, fluid-phase endocytic (FPE) mechanism of nutrient uptake in heterotrophic cells. In the present work, the possible enhancement/induction of FPE by photoassimilates other than sucrose was investigated by measuring the incorporation of the fluorescent endocytosis marker d-TR (dextran-Texas red, 3000 mw) into celery (Apium graveolens) ...

Aqueous, ethanolic and methanolic extracts of Ruta graveolens were investigated for anti-inflammatory activity in carrageenan induced paw edema in wistar male rats, and compared to a positive control drug, Voveran. These extracts were given (ip) in a concentration of 20 and 50 mg/kg b.w. before carrageenan injection. Methanolic extracts of R. graveolens with a concentration of 20 mg/kg b.w. and...

This paper investigates a model featuring a monopolist seller and a buyer, with an uncertain valuation for the seller’s product. The seller chooses an information system (“IS”), allowing the buyer to receive a private signal, potentially correlated with her valuation. The cost of the IS is proportional to its precision, measured by the mutual information between the distributions of the buyer’s...

Substantial price variation for homogeneous goods in online markets is a well-known puzzle that has withstood attempts by empirical researchers to explain it. Economic theory suggests two possible sources of the dispersion: either market frictions are more important than previously thought, or there are subtle differences between product listings presented to e-commerce consumers that applied e...

The Coase Conjecture (1972) has generated a large literature on the pricing of durable goods by monopolists. The theoretical predictions span a whole range with nearly perfect competition at one end and nearly perfect price discrimination at the other. An empirical test is therefore of importance. We test the Coase conjecture in an experimental setting and report on the results. We also test th...