Freshwater and brackish amphipods (Crustacea: Amphipoda) from Turkish thrace region (Including Çanakkale Province)

In order to determine the fresh and brackish water amphipod species of the Turkish Thrace Region, specimens were sampled from 68 localities in ?stanbul, Edirne, Tekirda?, K?rklareli and Çanakkale Provinces. Totally, 16 amphipod taxa were identified: Gammarus arduus G. Karaman, 1975, G. komareki Schäferna, 1922, G. pulex pulex (L., 1758), G. fossarum Koch, 1836, G. balcanicus Schäferna, 1922, G. aequicauda (Martynov, 1931), G. subtypicus Stock, 1966, G. uludagi Karaman, 1975, G. gonensis Özbek, 2016, G. kesanensis Özbek & Çamur-Elipek, 2010, Dikerogammarus istanbulensis Özbek & Özkan, 2011, Amathillina cristata Sars, 1894, Orchestia cavimana Heller, 1865, Synurella ambulans F. Müller, 1846, Pontogammarus robustoides Sars, 1894 and Niphargus sp. All the determined species were previously recorded from Turkey. This is the first record of Gammarus gonensis in Europe. Information about the sampling localities and a distribution map of the species are presented. © 2017 Bulgarian Academy of Sciences. All rights reserved

Susceptibility indexing method for irrigation water management planning: Applications to K. Menderes river basin, Turkey

A susceptibility indexing method was developed based oil vulnerability and quality indices. The contamination Susceptibility index (SI) at a given location was calculated by taking file product Of the Vulnerability index (VI) and the quality index (QI): SI = VI x QI. This method incorporates both hydrogeological and hydrochemical data for a comprehensive index mapping. The DRASTIC index methodology was used for the hydrogeological data evaluations. The quality index calculation procedure based oil a water quality classification scheme was introduced to evaluate hydrochemical data. The suggested susceptibility indexing method was applied to the Kucuk Menderes river basin located in western Turkey. The susceptibility index map shows both hydrogeological and hydrochemical data related to the contamination problem including areas that should be taken into consideration during Water management planning. The index map indicates that the most susceptible groundwater is located along the river channel between Kiraz and Tire towns, in the Selcuk area and along the Fertek stream channel to the north of Torbah town. file results indicate that the incorporation of both hydrogeological and hydrochemical datasets enables more realistic evaluations than those of an individual dataset to estimate the groundwater contamination Susceptibility of an aquifer. The numerical procedure applied Could be extended further by including other parameters Such as retardation, potential contaminant Sources, etc. that affect the water quality ill it given basin

A Current-Forced Line-Commutated Inverter for Single-Phase Grid-Connected Photovoltaic Generation Systems

A simple power electronic interface based on the line-commutated inverter (LCI) has been developed in order to inject sinusoidal current to the grid for single-phase grid-connected photovoltaic (PV) energy generation systems. The proposed inverter facilitates controlling the injecting/grid current with a controllable power factor in contrast to the conventional LCI system. It is achieved that the total harmonic distortion (THD) of the injecting currents for the different firing angles/power factors and reference currents is about 5% or less than 5%. Thus, the grid-connected standards for injecting current are satisfied without filter equipment unlike the conventional LCI system. The proposed system has been built in MATLAB/Simulink and examined experimentally on PV array of 160 W. The simulation and experimental results are better performance than the conventional line-commutated inverter methods reported in the literature. The proposed LCI has a simple and robust structure, and it can be easily synchronized with grid thanks to self-latching property of SCRs. Therefore, it is a good alternative for the power transferring from PV panels to the utility grid in grid-connected PV systems

ACUTE EFFECTS OF A RESISTED DYNAMIC WARM-UP PROTOCOL OH JUMPING PERFORMAHCE

This study aimed to investigate the kinematic and kinetic changes when resistance is applied in horizontal and vertical directions, produced by using different percentages of body weight, caused by jumping movements during a dynamic warm-up. The group of subjects consisted of 35 voluntary male athletes (19 basketball and 16 volleyball players; age: 23.4 +/- 1.4 years, training experience: 9.6 +/- 2.7 years; height: 177.2 +/- 5.7 cm, body weight: 69.9 +/- 6.9 kg) studying Physical Education, who had a jump training background and who were training for 2 hours, on 4 days in a week. A dynamic warm-up protocol containing seven specific resistance movements with specific resistance corresponding to different percentages of body weight (2%, 4%, 6%, 8%, 10%) was applied randomly on non consecutive days. Effects of different warm-up protocols were assessed by pre-/post- exercise changes in jump height in the countermovement jump (CMJ) and the squat jump (Si) measured using a force platform and changes in hip and knee joint angles at the end of the eccentric phase measured using a video camera. A significant increase in jump height was observed in the dynamic resistance warm-up conducted with different percentages of body weight (p0.05). In jump movements before and after the warm-up, while no significant difference between the vertical ground reaction forces applied by athletes was observed (p>0.05), in some cases of resistance, a significant reduction was observed in hip and knee joint angles (p<0.05). The dynamic resistance warm-up method was found to cause changes in the kinematics of jumping movements, as well as an increase in jump height values. As a result, dynamic warm-up exercises could be applicable in cases of resistance corresponding to 6-10% of body weight applied in horizontal and vertical directions in order to increase the jump performance acutely