Some Physical and Chemical Properties of Han Stream Spilled to Karakaya Dam Lake (Malatya, Turkey)

In this study, some physical and chemical properties of Han Stream (Malatya) in relation to water quality was investigated. For this purpose water samples were collected at monthly for eight months interval between December 2013-November 2014 (June- September is dry period). Water temperature, pH, electrical conductivity, dissolved oxygen and flow rate were measured directly in study area whilst chemical analysis such as sulfate, silica, nitrite, nitrate, total nitrogen, total phosphorus, acide capacity and chemical oxygen demand were carried out in water quality laboratory by means of cell test through a spectrophotometer. Total hardness, salinity and organic matter were determined in accordance with methods in APHA (1985). According to the Water Pollution Control Regulation for Inland Water Resources, study results showed that Han Stream should be classified as class I (high quality water) in terms of all parameters except that total phosphorus values (II/III class, less polluted)

Spatial and temporal distribution of phytoplankton in Karkamış Dam Lake (Şanlıurfa/Turkey)

The environmental factors that affect the seasonal change of the phytoplankton community and composition in Karkamis Dam Lake were investigated on samples taken from five stations between January 2015 and December 2015. It was found that the phytoplankton of Karkamis Dam Lake consisted of 85 taxa belonging to Bacillariophyta (56 taxa), Chlorophyta (15 taxa), Chrysophyta (1 taxon), Cyanophyta (10 taxa), Dinophyta (2 taxa) and Euglenophyta (1 taxon). Members of Bacillariophyta and Chrysophyta increased well during spring, summer and also at the end of fall whilst Chlorophyta grew well only in summer and fall. Cyanophyta became dominant at the end of spring and in summer. However Dinophyta was remarkably conspicuous in winter as well as in spring and fall in terms of prevalence. Excessive reproduction of Cyanobacteria, which is a characteristic aspect of mesotrophic lakes, was observed in Karkamis Dam Lake in both May and July. Results of physical and chemical measurements and analysis indicated that the lake was mesotrophic based on PCA and Carlson trophic state index. Phytoplankton composition was found to be affected by environmental factors such as temperature, pH, dissolved oxygen, phosphate and nitrate through the year. Using these data, a strong model was developed for sustainable management in Karkamis Dam Lak

Production of Mo2NiB2 based hard alloys by self-propagating high-temperature synthesis

Mo-Ni-B-Al as-cast alloys containing 35.5-58.7 wt% Mo, 23.0-57.6 wt% Ni, 3.3-5.2 wt% B, and 2.2-13.5 wt% Al were synthesized by Self-Propagating High-Temperature Synthesis (SHS) using a mixture of MoO3, NiO, B2O3 and Al powders in order to obtain low-cost Mo2 NiB2 containing hard materials. The first series of experiments were performed using 1.05 times the stoichiometric amount of Al. In the second series of experiments, FactSage thermochemical modeling software was used to minimize Al increasing the Mo2NiB2 formation in the as-cast alloys. The products were characterized by using atomic absorption spectrometry (AAS), X-ray diffraction (XRD), scanning electron microscopy (SEM) and micro-hardness techniques

A computerized image database for freshwater algae recorded in Turkey

A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was prepared for each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images were obtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardized in accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previously established through TüBİTAK projects. Te database program Access was used to enter data, as this program recognizes Turkish characters. A total of 627 data with images were installed in the database. Tese belonged to Bacillariophyta (202 data), Chlorophyta (255 data), Chrysophyta (3 data), Cryptophyta (2 data), Cyanophyta (87 data), Dinophyta, (12 data), Euglenophyta (61 data), Prasinophyta (1 datum), Rhodophyta (1 datum), and Xanthophyta (3 data).A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was prepared for each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images were obtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardized in accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previously established through TüBİTAK projects. Te database program Access was used to enter data, as this program recognizes Turkish characters. A total of 627 data with images were installed in the database. Tese belonged to Bacillariophyta (202 data), Chlorophyta (255 data), Chrysophyta (3 data), Cryptophyta (2 data), Cyanophyta (87 data), Dinophyta, (12 data), Euglenophyta (61 data), Prasinophyta (1 datum), Rhodophyta (1 datum), and Xanthophyta (3 data)

A computerized image database for freshwater algae recorded in Turkey

A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was prepared for each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images were obtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardized in accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previously established through TüBİTAK projects. Te database program Access was used to enter data, as this program recognizes Turkish characters. A total of 627 data with images were installed in the database. Tese belonged to Bacillariophyta (202 data), Chlorophyta (255 data), Chrysophyta (3 data), Cryptophyta (2 data), Cyanophyta (87 data), Dinophyta, (12 data), Euglenophyta (61 data), Prasinophyta (1 datum), Rhodophyta (1 datum), and Xanthophyta (3 data).A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was prepared for each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images were obtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardized in accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previously established through TüBİTAK projects. Te database program Access was used to enter data, as this program recognizes Turkish characters. A total of 627 data with images were installed in the database. Tese belonged to Bacillariophyta (202 data), Chlorophyta (255 data), Chrysophyta (3 data), Cryptophyta (2 data), Cyanophyta (87 data), Dinophyta, (12 data), Euglenophyta (61 data), Prasinophyta (1 datum), Rhodophyta (1 datum), and Xanthophyta (3 data)