seismic waves are non-stationary due to its propagation through the earth. time-frequency transformsare suitable tools for analyzing non-stationary seismic signals. spectral decomposition can reveal thenon-stationary characteristics which cannot be easily observed in the time or frequency representationalone. various types of spectral decomposition methods have been introduced by some researche...

the adsorption ability of miswak (salvadora persica l.) waste was investigated for the removalof common heavy metals; pb(ii), cu(ii), ni(ii) and cd(ii), from aqueous systems. the miswak mainlyconsists of saponins, tannins, silica and resin, which are accounted for the removal of heavy metal ions fromaqueous systems. the effects of various parameters, such as solution ph, contact time, initial c...

academic writing ability is an important goal that learners of english as a second language (esl) or english as a foreign language (efl) try to attain. while esl students’ academic writings have been widely explored, owing to few studies investigating appraisal resources in efl students’ argumentative writing, the gap still exists about efl students’ academic writing. this study aimed to see ho...

showing the occurrence of glass/rubber transition in bovine serum albumin (a globular protein) atlow moisture levels and the occurrence of maillard crosslinking in gelatin in previous works, the importanceof the state of glass or rubber of bsa on the rate and extent of polymerisation, protein solubility, colour andsds page patterns in the presence and absence of ascorbic acid, diketogulonic aci...

aim &background;: muslims fast from sunrise to sunset during ramadan, the 9th lunar month. the duration of fasting varies from 13 to 18 hrs per day. fasting individuals abstain from drinking liquids and eating foods. manypregnant women and gynecologists are concerned about the possible complicationsassociated with fasting and effects on fetal health. the aim of this study was to determine the e...

background: feeding intolerance is prevalent in very low birth weight (vlbw) neonates and is a barrier for better and faster growth in these neonates. some studies have supported the administration of oral probiotic to decrease feeding intolerance. the aim of this study was to evaluate the effect of probiotic on feeding intolerance in vlbw neonates. methods: this randomized clinical trial study...

background   lipoprotein lipase activity can be increased by clofibrate. clofibrate is used to reduce serum triglyceride level in adults. the aim of this study was to determine the effect of clofibrate on serum triglyceride and cholesterol level after administration of intravenous lipid in very low birth weight neonates. method in a randomized double blind placebo – controlled study, 60 very lo...

conclusions in this study, we found that in spite of previous beliefs, discopathies were not common etiologies of lbp. thus, even in patients with proven ldh by imaging studies, the physician should perform a thorough evaluation for other causes of lbp to avoid unnecessary lumbar surgeries. results in our study, among 1250 patients with proven ldh by mri, 500 patients (40%) had chronic lbp and ...

background: the human body contains of different tissues and cavities with different physical and radiological properties. most important among these are tissues and cavities that are radiologically different from water, including lungs, sinuses and bones. gel dosimetry provides a unique feature to display dose distributions occurring in clinical radiation therapy in three dimensions. materials...