an efficient and simple procedure for the synthesis of 1,8-dioxo-octahydroxanthenes from the aromatic aldehydes and 5,5-dimethylcyclohexane-1,3-dione (dimedone) in the presence of boric acid [bo3h3 or b(oh)3] as an inexpensive and reusable catalyst is described. the salient features of this methodology are: the elimination of corrosive liquid acids, high yields, simple methodology, short reacti...

background & aim: sage (salvia officinalis l.) is a perennial medicinal herb which belongs to lamiales order and lamiaceae family. this plant has economical value for four years. nowadays the use of plant growth regulators (pgr) has an important role for increasing the secondary metabolites in plants. among pgrs jasmonic (ja) and salicylic acid (sa) have many applications in medicinal plant...

single walled nanotubes (swnt) are common interested nanovehicle to make biosensors more sensitive.carbon nanotubes (cnts) have many distinct properties make them to be exploited to develop the nextgeneration of such nano sensors .the keto-enol tautomerization is one of the most common investigatedsubjects of isomerism in this regards, sensors are devices that are able to detect and change the ...

the aim of this work was to study the ability of two biodegradable chelating agents, nitrilotriaceticacid (nta) and ethylenediiminopropanedioic acid (eddm) to complex metals, in the treatment of the pulp,prior to a totally chlorine free (tcf) bleaching process, and compare with the ethylenediaminetetraacetic acid(edta) performance. firstly, speciation efficiency index (sei) was calculated by co...

background and objective: recent studies have shown that not only the quantity, but also the quality of dietary fatty acids can affect lipid parameters. elaidic acid is a major hydrogenated by-product of vegetable oil play a role in the development of cardiovascular disease, especially atherosclerosis, through changing lipid profile and increase in inflammation and inflammatory factors. on the ...

background and objective: epilepsy is a long-lasting central nervous system disorder that is accompany with spontaneous seizures and insufficiency in learning and memory. now drug treatment is the most common therapy but some patients do not research to suitable control of their seizures with current drugs. hence, new treatment is needed to help those patients that are unaffected to existing dr...

sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl]ester (saspspe) is employed as a recyclable catalyst for the silylation of hydroxyl groups. a good range of primary, secondary alcohols and phenolic hydroxyl groups were effectively converted into their corresponding trimethylsilyl ethers with hexamethyldisilazane in the presence of catalytic amounts of saspspe at room temperature with short rea...

conclusions this report is the first to document other treatment possibilities for pressure ulcer and/or stasis dermatitis in cases where the use of topical applied ointments and medications is difficult. this new therapy may therefore help physicians to treat pressure ulcers and stasis dermatitis. case presentation case 1: a 21-year-old japanese female with lower-body paralysis. pressure ulcer...

a growing number of observational and epidemiological studies have suggested that mental illness, in particular mood disorders, is associated with decreased dietary intake and/or cellular abundance of omega-3 polyunsaturated fatty acids (pufa). this has prompted researchers to test the efficacy of omega-3 pufa in a range of different psychiatric disorders. we have critically reviewed the double...

objective: type 2 diabetes mellitus (dm-2) is a chronic and progressive metabolic disorder known as a serious threatening condition in the individual and society. type 2 diabetes mellitus is known as the major cause of cardiovascular diseases (cvd). contradictory evidences about the effect of omega-3 fatty acids on cvd risk factors, particularly hypertension. the aim of this study was to determ...