a catalytic spectrophotometric method for determination of ultra-trace quantities of manganese(ii) id described. the method is based on the catalytic effect of manganese(ii) on the oxidation reaction of ferroin by potassium periodate in acidic media. the reaction is monitored spectrophotometrically at 510 nm by a slope method and mn(ii) is determinable in the range of 1-1000ngml-1. the limit of...

as functional integration has increased in hand-held consumer devices features such as global positioning system (gps) receivers have been embedded in increasingly more devices in recent years. for example, the train positioning system based on gps provides an integrated positioning solution which can be used in many rail applications without a cost intensive infrastructure. the network built i...

background: apolipoprotein a2 (apoa2) is the second major apolipoprotein of the high-density lipoprotein cholesterol (hdl-c). the study aim was to identify apoa2 gene variation in individuals within two extreme tails of hdl-c levels and its relationship with hdl-c level. methods: this cross-sectional survey was conducted on participants from tehran glucose and lipid study (tlgs) at research ins...

background: visfatin is a new adipocytokine which is largely secreted by visceral adipose tissue and its effects in the development of diabetes and inflammatory reactions are similar to insulin. it acts synergistically with insulin in increasing glucose cellular uptake, stimulating glucose transfer to the muscle and adipose tissue, as well as in preventing hepatic glucose production. its insuli...

background the occurrence of invasive candida infections has increased during the past two decades as a result of increasing in the number of immunocompromised patients. conclusions increase in the prevalence of non-c. albicans species in the recent years has become a problematic event amongst clinicians caring for icu patients. candida glabrata is the most common species isolated from icu pati...

background: papillon-lefevre syndrome (pls) is a rare autosomal recessive disorder characterized by palmoplantar hyperkeratosis and early development of aggressive pe-riodontitis. although cathepsin c (ctsc) gene mutations have been established in about 70-80% of pls patients, it is assumed that the patients may have dysfunctioning of immune defense mechanisms. objective: to assess the associat...