a method for determination of juglone in leaves and hulls of pterocarya fraxinifolia was developed, based on rp-hplc. this compound was extracted from leaves and hulls by chloroform refluxing about 2 hours. the chloroform was evaporated under low pressure at   50 ºc to produce a dry residue. the remained materials were dissolved in acetonitrile to be used for determination of this compound. app...

the present study investigated comparatively the impact of two types of input enhancement (i.e. textual vs. compound enhancement) on developing grammar ability in iranian efl setting. sixty-five female secondary high school students were selected as a homogenous sample out of about a 100-member population based on nelson language proficiency test. then, their grammar ability was measured based ...

The continuation of Moore’s law by conventional complementary metal oxide semiconductor (CMOS) scaling is becoming more and more challenging, requiring huge capital investments. On proposed scenario is the implementation of compound semiconductors as parts of advanced CMOS devices for More-than-Moore integration. The continuation of improved performance characteristics in CMOS manufacturing is ...

The purpose of the investigation is to analyze the pros and cons of existing sorption models, as well as experimental methods. In addition, it summarizes existing sorption data in order to understand the phenomenon of VOC sorption on building materials better and to direct future research. We found that existing sorption models can be generally classified into either first order adsorption/deso...

INTRODUCTION Feed is a potential and major source for introducing Salmonella into the animal-derived food chain. This is given special attention in the European Union (EU) efforts to minimize human food-borne Salmonella infections from animal-derived food. The objective of this study was to estimate the total extra cost for preventing Salmonella contamination of feed above those measures requir...

This paper reports on the methodology and materials used to construct anthropomorphic phantoms for use in dosimetry studies, improving on methods and materials previously described by Jones et al. [Med Phys. 2006;33(9):3274-82]. To date, the methodology described has been successfully used to create a series of three different adult phantoms at the University of Florida (UF). All phantoms were ...

The Heusler-type Fe2VAl compound is a nonmagnetic semimetal with a sharp pseudogap at the Fermi level. Doping of quaternary elements causes a large enhancement in the Seebeck coefficient, in parallel with a significant decrease in the electrical resistivity. Since the Seebeck coefficient varies systematically with the valence electron concentration (VEC), irrespective of doping elements, the ne...

General notes: Present your solutions neatly. Do not turn in rough unreadable worksheets learn to take pride in your presentation. Show the relevant steps, so that partial points can be awarded. BOX your final answers where applicable. Draw figures wherever necessary. Please print out this question sheet and staple to the top of your homework. Write your name and email address on the cover. The...