a pvc membrane electrode based on 1-[({[(butylsulfunyl)carbothioyl]disulfanyl} carbothioyl)sulfanyl]butane as a suitable ion carrier for determination of lanthanum(iii) ion was prepared. this electrode revealedsuch a good selectivity toward la3+ ion over a wide variety of other metal ions. some experimental parametersuch as membrane composition, nature, and amount of plasticizer, the amount of ...

aim : to determine the prevalence of constipation and its associated factors using rome iii criteria in iranian population. background : due to the appearance of amoxicillin-resistant h. pylori strains all over the world, the decreased efficacy of conventional amoxicillin-containing treatment regimens has become a matter of concern. patients and methods : a cross-sectional study conducted in te...

objective: we determine the prevalence of the metabolic syndrome in an urban population of jahrom, a city located in the south of iran. materials and methods: randomly selected subjects ≥30 years-old were studied using stratified sampling. target study sample was 892 (405 men and 487 women). metabolic syndrome was diagnosed using modified adult treatment panel guidelines when any three of the f...

background and objectives: dengue has re-emerged as an important arboviral disease causing significant morbidity. it has become hyperendemic in the indian subcontinent with all four known dengue serotypes circulating. materials and methods: multiple sequence alignments and phylogenetic trees of denv-3 were constructed to determine the extent of the isolated dengue virus genetic heterogeneity an...

a serum survey was conducted to determine the immune status of children 2 months to 6 years old to polio virus type i, ii and iii related to the history of oral polio vaccination in fashapouye (a rural area in the south of teheran). 566 serum samples were obtained from children in 9 different villages and microneutra lization test was performed on 1;10 dilution of these sera. the study revealed...