Dual band GNSS antenna for missile applications

22nd International Microwave and Radar Conference, MIKON 2018 -- 14 May 2018 through 17 May 2018 -- 137856Antennas for Global Navigation Satellite Systems are critical for sounding rockets and missiles. Due to limited space available within the structure, microstrip antennas offer several benefits in providing an inexpensive method for telemetry and satellite positioning systems. Most of the wraparound microstrip antennas are linearly polarized due to rotation of the structure. However, advanced receivers can resolve missile rotation if the antenna supports circular polarization of GNSS. In this study, we propose a dual band antenna for this purpose. © 2018 Warsaw University of Technology

LSER modeling of extraction of succinic acid by tridodecylamine dissolved in 2-octanone and 1-octanol

Reactive extraction can be used for the recovery of carboxylic acids from fermentation broth. Through the formation of complex with extractants at the two-phase interface, the carboxylic acids are partitioned into organic solvents. But, the recovery of carboxylic acids is interrupted by the conditions of fermentation broth. In this work, kinetic studies for the extraction of succinic acid from aqueous solution with tridodecylamine diluted in 2-octanone and 1-octanol have been carried out. Equilibrium and kinetic studies for the extraction of succinic acid from aqueous solution with tridodecylamine diluted in two functional groups (alcohol and ketone) such as 2-octanone and 1-octanol are reported. All measurements have been carried out at 298.15 K. The results of the liquid-liquid equilibrium measurements have been correlated by a linear solvation energy relationship - LSER model which takes into account physical interactions. (C) 2011 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved

Reactive Extraction of L (+) Tartaric Acid by Amberlite LA-2 in Different Solvents

: The extraction of L(+) tartaric acid from aqueous solutions by amberlite LA-2 is a secondary amine mixture in different diluent solvents. Extraction equilibria of L(+) tartaric acid by amberlite LA-2 in 1-octanol, cyclohexane, isooctane, hexane, methyl isobutyl ketone (MIBK) solvents at temperature 298.15 K have been measured. The batch extraction experiments distribution coefficients (D), loading factors (Z) and extraction efficiency (E) were calculated. The maximum removal of L(+) tartaric acid is 91 % with MIBK and 0.92 mol. L-1 initial concentration of Amberlite LA-2

X band patch array antenna design for marine radar application

22nd International Microwave and Radar Conference, MIKON 2018 -- 14 May 2018 through 17 May 2018 -- 137856Horizontally polarized patch antenna array design is proposed for frequency modulated continuous wave (FMCW) marine radar applications. The array consists of series-parallel fed 96 elements printed on microwave substrate. The array configuration is optimized for minimum line loss and maximum aperture efficiency. The target frequency band is 9.3-9.4 GHz. Antenna parameters such as return loss, peak gain, half-power beam width and side-lobe levels are presented for marine radar applications. © 2018 Warsaw University of Technology

Investigation of effects of grooves on antenna performance for Ku band antenna

22nd International Microwave and Radar Conference, MIKON 2018 -- 14 May 2018 through 17 May 2018 -- 137856Effects of grooves on antenna performance parameters such as gain, VSWR, HPBW and SLL are investigated for aperture type Ku band antenna. The antenna has dual cavity step transition from WR75 waveguide with two grooves on the aperture plane. Simulations shows that groove shape plays an important role in antenna performance. With careful design of the grooves, performance of a single antenna matches to that of an two-element array antenna. © 2018 Warsaw University of Technology.National Council for Scientific Research TEYDEB-5150052 BAP 16-MUH-032This work is partly supported by Ege University BAP 16-MUH-032, and The Scientific and Research Council of Turkey (TUBITAK) under grant no: TEYDEB-5150052, and SVS Telecommunications, Istanbul, Turkey. -

comparative study

OBJECTIVE: To compare the order effect of a combination of plyometric and resistance training sessions on isokinetic leg strength and vertical jump performance in undergraduate students over the course of a 6-week training program

PHYSIOLOGICAL RESPONSES AND TIME-MOTION CHARACTERISTICS OF 4-A-SIDE

Koklu, Y, Ersoz, G, Alemdaroglu, U, Asci, A, and Ozkan, A. Physiological responses and time-motion characteristics of 4-A-side small-sided game in young soccer players: The influence of different team formation methods. J Strength Cond Res 26(11): 3118-3123, 2012-The purpose of this study was to examine the influence of different team formation methods on the physiological responses to and time-motion characteristics of 4-a-side small-sided games (SSG4) in young soccer players. Thirty-two young soccer players (age 16.2 +/- 0.7 years; height 172.9 +/- 6.1 cm; body mass 64.1 +/- 7.7 kg) voluntarily participated in this study. Anthropometric measurements, technical tests, and maximum oxygen uptake ((V) over dotO(2)max) tests were carried out on the players. The SSG4 teams were then created using 4 different methods: according to the coaches' subjective evaluation (CE), technical scores (TS), (V) over dotO(2)max (AP), and (V) over dotO(2)max multiplied by TSs (CG). The teams thus created played 4 bouts of SSG4 at 2-day intervals. During the SSG4, heart rate (HR) responses, distance covered, and time spent in HRmax zones were recorded. In addition, rating of perceived exertion (RPE) and blood lactate level (La-) were determined at the end of the last bout of each SSG4. Percent of HRmax (%HRmax), La , and RPE responses during SSG4 were significantly higher for teams chosen according to AP and CG compared with that according to CE and TS (p 90% HRmax) and covered a greater distance in ;the high-intensity running zone (>18 km.h(-1)) than did teams formed according to TS. Moreover, AP teams covered significantly greater total distance than TS teams did (p < 0.05). In conclusion, to spend more time in both the high-intensity HR zone and the high-intensity running zone, the teams in SSG4 should be formed according to the players' (V) over dotO(2)max values or the values calculated using both the (V) over dotO(2)max and technique scores