Background — The use of physical means as an aid for modern medicine in the champion against pathogenic microorganisms holds new approach that recently have begun to be widely recognized. The use of an additional physical means, alternating currents, introduced to inhibit bacterial growth and enhance disinfectant potency. The present study aimed to determine the best frequency of alternating cu...

Carotenoid là họ sắc tố có vai trò quan trọng đối với đời sống con người và được ứng dụng trong nhiều lĩnh vực khác nhau như thực phẩm, y dược, công nghiệp. Tuy nhiên, việc sản xuất carotenoid từ các môi trường thương mại còn giá thành cao. Trong nghiên cứu này đã tiến hành đánh khả năng sử vỏ dứa để nấm men Rhodosporidium paludigenum. Kết quả cho thấy, dịch chiết thể thay thế hoàn toàn Hansen ...

background :     river and underground waters are main sources of tap water in guilan, iran. overland wastes move into rivers during periods of heavy or extended rain that is very common in the area. pseudomonas aeruginosa , legionella pneumophila , and escherichia coli are main human pathogens with water source. this study is designed to determine the load of these bacteria in main water suppl...

Zinc sulfide (ZnS) & zinc oxide (ZnO) nanoparticles was evaluated for their antimicrobial activity against four pathogenic strains. ZnS&ZnO nanoparticles were synthesized by simple aqueous chemical reaction in an aqueous solution. The main advantage of these nanoparticles (size of 10-30 nm) was that simply could be prepared by using cheap precursors in a cost effective and high throughput manne...

most of poly aromatic hydrocarbons are stable in marine environment and don’t degrade easily. if they accede to the aquatic animals bodies, they will accumulate in their fat tissues. the toxic effects of these compounds are consisting of carcinogenic, mutagenic and germinal tribulation. hence present study was done with purpose of isolation and identification of naphthalene degrading bacteria a...