the synthetic seed technology is becoming popular due to its wide application in germplasm conservation and for exchanges between countries in the floriculture trade. in this study, this method was used to study the germination and conversion capabilities of orchid species dendrobium white fairy when stored at different storage times and with different storage containers. a high germination per...

in this work application of seven synthetic polymers as adsorbents for the removal of hg(ii) from aqueous solution was studied. the equilibrium studies are systematically carried out in a batch process, covering various process parameters that include agitation time, adsorbent dosage, and ph of the aqueous solution. variations of hg(ii) concentration in solution have been studied through measur...

objective: in recent years the use of herbal slimming supplements has increased in iran. one problem may be the illegal inclusion of synthetic drugs by some manufacturers in these products. the aim of this study is to determine four undeclared synthetic adulterants in some herbal slimming products present in the iranian market. methods: this survey studyresearched six common herbal slimming sup...

the linguistic is studying the language different levels, the language is main topic  that the linguistic sisstu dying it. the linguistics has several branches,the stylistics is one of its branches that survey literary works. and stylistic phenomenon is one of the important phenomen as at linguistic studies and it study poetic language because it’s different from the common language. since the ...

In this paper, Burr-type XII ̄X synthetic schemes are proposed as an alternative to the classical ̄X synthetic schemes when the assumption of normality fails to hold. First, the basic design of the Burr-type XII ̄X synthetic scheme is developed and its performance investigated using exact formulae. Secondly, the non-side-sensitive and side-sensitive Burr-type XII ̄X synthetic schemes are int...

The introduction of digital video to the personal computer has generated interest in the integration of image sequences into the user interface. Traditional means of representing an image sequence lack the manipulability desired, requiring that an alternative approach be taken. Previous work in the eld of computer graphics and videodisc applications suggest synthetic movies as the solution. A s...

In August 2006, a pyrethrin insecticide synergized with piperonyl butoxide (EverGreen Crop Protection EC 60-6, McLaughlin Gormley King Company, Golden Valley, MN) was sprayed in ultralow volumes over the city of Davis, CA, by the Sacramento-Yolo Mosquito and Vector Control District to control mosquitoes transmitting West Nile virus. Concurrently, we evaluated the impact of the insecticide on no...

BACKGROUND Chrysanthemic acid (CHA) is a major product from the photodecomposition of pyrethrin which is an important class of pesticide compounds.In the following paper, Hybrid density functional theory (DFT) calculations of the potential energy surface (PES) for three possible channels decomposition of chrysanthemic acid (cis-trans isomerization, rearrangement and fragmentation) have been car...

Two regression estimators were developed for determining densities of late-instar gypsy moth, Lymantria dispar (Lepidoptera: Lymantriidae), larvae from burlap band and pyrethrin spray counts on oak trees in Vermont, Massachusetts, Connecticut, and New York. Studies were conducted by marking larvae on individual burlapbanded trees within 15-m diameter plots and recapturing them with pyrethrin sp...