Optical-computing technology offers new challenges to algorithm designers since it can perform an n-point discrete Fourier transform (DFT) computation in only unit time. Note that the DFT is a nontrivial computation in the parallel random-access machine model, a model of computing commonly used by parallel-algorithm designers. We develop two new models, the DFT-VLSIO (very-large-scale integrate...

Several receptors, including those for AVP (Arg8-vasopressin) and 5-HT (5-hydroxytryptamine), share an ability to stimulate PLC (phospholipase C) and so production of IP3 (inositol 1,4,5-trisphosphate) and DAG (diacylglycerol) in A7r5 vascular smooth muscle cells. Our previous analysis of the effects of AVP on Ca2+ entry [Moneer, Dyer and Taylor (2003) Biochem. J. 370, 439-448] showed that arac...

Farming is one of the most important components of most economies. No comprehensive picture exists of the health status of Iranian farmers and the work-related hazards that affect them. We aimed to determine the gaps in the current knowledge regarding the occupational health of Iranian farmworkers. Electronic databases including Medline, Web of Science, Scopus, and Embase, as well as national d...

Health disparities are defined as “differences in the incidence, prevalence, mortality, and burden of diseases and other adverse health conditions that exist among specific population groups in the United States” (US Department of Health and Human Services 2002). Arguably the most remarkable health disparities in the United States is the difference in the incidence of biliarytract cancers (BTC)...

By RUSSEL M. BARAKAT AND ROGER P. EKINS F OR A PERIOD of about a decade, microbiological assay with Euglena gracilis1 and other microorganisms2 has been accepted as a standard method of vitamin B,2 determination in serum and other body fluids. However, this method is time-consuming, entails many sources of error and is not fully reliable. Other methods of assay3 require relatively large quantit...

Key words Disease name and synonyms Definition/diagnostic criteria Epidemiology Clinical description Etiology Diagnostic methods Differential diagnosis Genetic counseling Antenatal diagnosis Management including treatment Prognosis Unresolved questions References Abstract The syndrome of Hypoparathyroidism, sensorineural deafness and renal disease (HDR syndrome) is an inherited condition. Patie...

HDR syndrome (also known as Barakat syndrome) is a developmental disorder characterized by hypoparathyroidism, sensorineural deafness and renal disease. Although genetic mapping and subsequent functional studies indicate that GATA3 haplo-insufficiency causes human HDR syndrome, the role of Gata3 in sensorineural deafness and auditory system development is largely unknown. In this study, we show...

Introduction: Physical inactivity is one of the most important risk factors for chronic diseases, including cardiovascular disease, cancer, and stroke. We aim to conduct a systematic review of the prevalence of physical inactivity in Iran. Methods: We searched international databases; ISI, PubMed/Medline, Scopus, and national databases Irandoc, Barakat knowledge network system, and Scientific I...

In a previous publication from this laboratory, a method was described for the quantitative bromodecarboxylation of amino acids, proteins, and peptides (1). A review of decarboxylating compounds and of the theories pertinent to their mode of action has been presented by Schijnberg and Moubacher (2). The reaction of N-bromosuccinimide with various compounds in organic solvents has received consi...