the potential indoor air impacts of burning candles have drawn increased attention in recent years.  burning paraffin waxes itself, regardless to wick and the essence, produce some allergens and even carcinogenic compounds. further biorefining of petroleum paraffin wax with proper bacteria is one of the proposed resolutions to decrease the health threat. therefore in this study iranian heavy cr...

The present study was aimed to evaluate the antibacterial activity of Amorphophallus campanulatus (family: Araceae) commonly known as jangli suran. The root, stem and leaf of A. campanulatus, extracted successively with polar (aqueous, methanol), dipolar (acetone) and non polar (chloroform) solvents, yielded more phyto compounds in case of root followed by stem and leaf. The extracts were asses...

Dr. Hei received his B.S. in Chemical Engineering in 1988 from the University of Wisconsin at Madison and went on to complete his Ph.D. in Biochemical Engineering at the University of California at Berkeley in 1993. He then entered industry, where he worked for seven years at Genentech and then Cerus Corp., developing recombinant protein and cell-based biotherapeutics and rising to the position...

Background: Alkaloids are a group of nitrogen- containing natural compounds derived from a variety of sources including bacteria, fungi, marine organisms and plants. Materials and methods: Fruits, stem or leaves were collected from the Zagros highlands around Azna or Khoramabad city, dried and powdered before being extracted in a soxhalet apparatus. The extract was filtered and concentrated u...

Introduction: There is an increasing concern regarding the emergence of highly antibiotic resistant bacteria and therefore interests for the development of new antibiotics are increasing worldwide. Plant extracts are popular for having the least side effects and being natural .We have investigated antibacterial activity of extracts from four Lorestan medicinal plants including Artemisia Persi...

Drugs from natural sources are used for treating various diseases since the ancient times. From the literature it is clear that various type of pharmacological and biological activities are associated with Azadirachta indica. The leave oil of A. indica is known to have good antimicrobial potential. The oil of A. indica leaves, was tested against the different infectious microorganisms [Gram pos...

Trypanosoma cruzi, the protozoan pathogen that causes Chagas' disease, can be found in the blood of infected individuals for their entire life span. This presents a serious challenge in safeguarding blood products. Transmission of T. cruzi from blood products is a frequent occurrence in Latin America, where Chagas' disease is endemic. This study was designed to determine whether T. cruzi could ...

BACKGROUND Despite vast improvements in transfusion services in sub-Saharan Africa over the last decade, there remain serious concerns on the safety and adequacy of the blood supply across the region. OBJECTIVE This review paper ascertains the role of pathogen reduction technology (PRT) in improving blood safety and supply adequacy in the region. METHOD The state of blood safety in sub-Saha...