varieties of st. john’s wort (hypericum perforatum l.) native to iran possess the largest percentage of hypercin in their leaves and flowers. isotherm curves show the relationship between the relative humidity and moisture content of the plant at a constant temperature. it is essential to understand the isotherms curves for successful storage and drying of the plant. this study used adsorption ...

canola is a prominent oil seed crop with a very high production potential in iran and the production process of which needs to be optimized. drying is an important part of the processing of the crop with emc values playing a vital role in the process. in this research adsorption and desorption experiments were conducted in an environmental chamber for licord variety of canola. the thin layer ex...

Author Affiliations: Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Md (Salmon, Pan, Omer, Halsey); Division of Public Health, Wisconsin Department of Health and Family Services, Madison, Wis (Sotir, Berg, Hopfensperger, Davis); Institute for Vaccine Safety, Johns Hopkins Bloomberg School of Public Health, Baltimore, Md (Omer, Halsey); National C...

Interest in seed propagation of drumstick tree (Moringa oleifera) has created a need for information about the water relationships of its seeds. Thus, we studied the imbibition and desiccation kinetics and adsorption/ desorption isotherms of drumstick tree seeds. Seeds absorbed water readily when imbibed at 23oC. After 17 h of exposure to an atmosphere of 100% relative humidity (RH), seed moist...

 The equilibrium moisture content of malting barley grains (cv. Scarlett) was determined by gravimetric-static method in the range 20-50°C using saturated salt solutions (LiCl, MgCl2.6H2O, K2CO3, NaBr, NaNO2, KI, NaNO3, NaCl, (NH4)2SO4) to provide water activities for each temperature between 0.11 and 0.813. Desorption isotherms were obtained at 20, 30, 40, and 50°C. All the sorption curves w...

Let (Ω, μ) be a set of real numbers to which we associate a measure μ. Let α ≥ 0, let Ωα = {x ∈ Ω/α(x) = α}, where α is the concentration index defined by Halsey et al. [Halsey et al., 1986]. Let fH(α) be the Hausdorff dimension of Ωα. Let fL(α) be the Legendre spectrum of Ω, as defined in [Riedi and Mandelbrot, 1998]; and fC(α) the classical computational spectrum of Ω, defined in [Halsey et a...