Bu çalışmada, sucul ortamlardan alınıp laboratuvar ortamına getirilerek izole edilen ve teşhis yöntemleri kullanarak tür tanımlaması yapılmış olan alg türü Spirogyra aequinoctialis ekstraktların çeşitli mikroorganizma türleri üzerinde antibakteriyal antifungal etkileri araştırılmıştır. ekstraktları, 0.5 M Tris-HCL pH:8.00, N-butanol Etanol ile hazırlanmıştır. Antimikrobiyal aktivite testleri, d...

We report three-photon laser scanning microscopy (3PLSM) using a bi-directional pumped optical parametric oscillator (OPO) with signal wavelength output at λ= 1500 nm. This novel laser was used to overcome the high optical loss in the infrared spectral region observed in laser scanning microscopes and objective lenses that renders them otherwise difficult to use for imaging. To test our system,...

This paper provides information on the diets of Oreochromis niloticus and Sarotherodon galilaeus in Ero reservoir. Fish species were procured from fishermen every fortnight using gill nets, cast nets, traps, hooks and lines. Specimens were chilled with iced blocks at the point of collection and transported to the laboratory. 494 fish specimens were examined and their stomach contents analyzed. ...

Free radicals are one of the causes of chronic and degenerative diseases. Antioxidants can protect the progression of free radical mediated disorders. The aim of this study was to evaluate the antioxidant activity of Spirogyra neglecta (Hassall) Kützing in rats. The rats were divided into 5 groups. Group 1 served as control. Groups 2 and 3 were administered hot water extract of S. neglecta at 5...

Serious environmental degradation of aquatic ecosystems has been caused by eutrophication and by pollutants such as herbicides. Therefore, measurement of in situ algal photosynthetic activity is important for environmental monitoring. With ordinary nonimaging fluorometers, algal chlorophyll fluorescence can be measured easily, but heterogeneity within samples cannot be detected. Effects of a he...