background : rhoptries are unique secretory/excretory organelles that are found exclusively in the apicomplexa, and their contents are discharged at the time of invasion and are critical in the establishment of productive infection. several rhoptry proteins have been identified in toxoplasma gondii , plasmodium falciparum and neospora caninum and have been linked not only with the parasites’ ad...

information avalanche (overload or expansion) in various scientific fields is a novel issue turned out by a number of factors considered necessary to facilitate their record and registration. though, the biological science and its diverse fields like proteomics are not immune of this event and even may be as the event’s herald. on the other hand, time as the most valued anxiety of human has enc...

the aim of this study was to analyse polar lipids of candida species isolated from ahwaz (iran) by fast atom bombardment mass spectrometry (fab ms). nine isolates of candida sp. were identified by growth at 45°c, production of chlamydoconidia on cornmeal agar, colonial colour on chromagar candida, germ tube production and id 32c kits. then polar lipids were extracted from freeze-dried cultures ...

background ziziphora tenuior l. known as kakuti in persian, is used in traditional medicine for fever, dysentery, uterus infection and as an analgesic. it is used also in the treatment of gastrointestinal disorders as carminative, or remedy of diarrhea or nausea. major components of plant essential oil including pulegone, isomenthone, thymol, menthone, and piperitone are suggested to be respons...

background food born pathogenic bacteria are the most important agents of infections in humans, and food spoilage also results in economic losses in food industry. objectives the aim of this study was the evaluation of chemical components, total phenolic content, antioxidant and antibacterial activities of artemisia dracunculus essential oil. materials and methods the essential oil of tarragon ...

The present study describes the fragmentation under electron ionization (EI) of gas phase serine and threonine amino acids. Ab initio methods were performed to calculate the fragmentation paths and interpret the mass spectra. The six lowest energy conformers of L-serine, L-threonine and L-allo-threonine were obtained with B3LYP, G3MP2 and MP2 methods. The adiabatic and vertical ionizat...

study of Quaternary environmental changes; a review. Quaternary Science Reviews, 1, 245–313. Peterson, L. C., Haug, G. H., Hughen, K. A., and Roehl, U., 2000. Rapid changes in the hydrologic cycle of the tropical Atlantic during the last glacial. Science, 290, 1947–1951. Pike, J., and Kemp, A. E. S., 1996. Preparation and analysis techniques for studies of laminated sediments. In Kemp, A. E. S....