bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Lean Tools in Achieving Lean Warehousing
Authors: Anđelković Aleksandra , Radosavljević Marija , Stošić Danijela 
Published: March 2017

Abstract
The acceptance of lean philosophy in the company means not only respecting the lean principles in the manufacturing but in all the processes that are performed inside the company. All processes in the company that are a potential places for making losses and waste and thus require the application of lean principles. Among others, warehouse and warehouse operations, as a centre of costs and waste, must be supported through the implementation of lean philosophy in the company by respecting lean principles. The implementation of lean principles in the warehouse is a certain step of improvement warehouse process and performance, but also of the whole company. In that sense, the paper presents the analysis of the warehousing process and its performances before and after implementation of the lean tools in a selected Serbian company as a practical example. In addition, research shows which parts of warehousing need to be improved, in analysed company, as well as correlation between the individual parts of warehousing, according to employees' opinion from next sectors: purchasing, production and logistics.
A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
Authors: Yao Changfei , Wei Xiang , Luo Yunsheng , Zhou Ming 
Published: March 2017

AbstractThis work presents the design and performance of a ×6×3 frequency multiplying chain which covers the frequency range from 207 to 220 GHz. The chain consists of an E-band sextupler, a four-way power-combined amplifier which delivers 300 mW output power and a 220 GHz balanced power-combined frequency tripler. Each way of the tripler circuit includes two anti-series mounted GaAs Schottky diode chips in which each diode has three anodes in series. The chain delivers maximum output power of 23.8 mW at 210 GHz with efficiency of 6.8 % and its output power is higher than 15 mW from 208.8 to 217.2 GHz. The chain has sufficient power to pump a 425 GHz heterodyne receiver and is possible to be used as a transmitting source for 220 GHz security detection systems.
Modelling of carrying capacity in National Park - Fruška Gora (Serbia) case study
Authors: Vujko Aleksandra , Plavša Jovan , Petrović Marko D. , Radovanović Milan , Gajić Tamara 
Published: March 2017

AbstractNegative effects of tourism development in a destination are usually the consequence of the high concentration of tourists, accommodation facilities and the activities that are practiced in a relatively restricted area. One of the most important measures to protect the areas is to calculate the maximum number of tourists that can simultaneously reside in a region, i.e. the determination of the carrying capacity. This paper outlines a method for determining carrying capacity based on zoning of environmental resources and zoning within a region. The paper argues for a return to the idea of identifying maximum appropriate number of users. The main hypothesis of the paper is based on the statement that the development of tourism in Fruška Gora (Mountain) National Park in Northern Serbia must be in accordance with the basic principles of sustainability, including the determination of carrying capacity. The main research goal was to show the opinion of local residents about the uncontrolled development of tourism, and to determine the carrying capacity in four sports and recreational zones of the mountain. The carrying capacity of the area is calculated by Lavery and Stanev formulas.
Dynamic synthesis route of zeolite Y with kaolin to improve yield
Authors: Bai Yuting , Wu Wenyuan , Bian Xue 
Published: March 2017

Abstract:Zeolite NaY was successfully synthesized by a dynamic hydrothermal crystallization method with water glass and kaolin from Yunnan Provice of China. The products were modified to serve as hydrocracking catalysts. The influences of aging conditions of the structure-directing agent and crystallization methods were examined. The compositions and microstructures of zeolites were characterized by field emission scanning electron microscopy, X-ray diffraction and Brunauer-Emmett-Teller (BET). The catalytic performance for hydrocracking was briefly evaluated. The results showed that appropriate aging temperature and time of structure-directing agent were beneficial to nucleation. Combined with static crystallization, the yield of zeolite NaY prepared by the dynamic crystallization method was significantly improved, relative crystallinity increased from 46.91% to 74.18%, and conversion in hydrocracking accordingly increased from 39.58% to 55.93%.
Changes in Impact Signals and Muscle Activity in Response to Different Shoe and Landing Conditions
Authors: Wang Xi , Zhang Shen , Fu Weijie 
Published: March 2017

Abstract
Few rigorous scientific studies have investigated how the corresponding neuromuscular activity in the lower extremity occurs during different landing control movements in response to different impact signals. This study aimed to determine the potential shoe effects on impact signals, neuromuscular responses and their possible interactions in different human landing movements. Twelve male basketball players were required to wear high-cushioned basketball shoes (BS) and minimally cushioned control shoes (CC) to perform active drop jump landings (DJL) and passive landings (PL). Ground reaction forces and EMG amplitude (root mean square, EMGRMS) of the leg muscles within 50 ms before and after the landing movements were collected simultaneously. No shoe effect was found on the characteristics of impact signals and neuromuscular activity during the contact phase of DJL. By contrast, for PL, the values of maximal ground reaction force and the peak loading rate were evidently lower in the BS condition than in the CC condition (p < 0.05). Meanwhile, the EMGRMS of all muscles demonstrated a significant decrease in the BS condition compared with the CC condition within 50 ms after contact (p < 0.05). These findings suggest that under the condition in which related muscles are activated improperly, a neuromuscular adaptation occurs in response to different impact signals.
Isokinetic Dynamometry and 1RM Tests Produce Conflicting Results for Assessing Alterations in Muscle Strength
Authors: Gentil Paulo , Del Vecchio Fabricio Boscolo , Paoli Antonio , Schoenfeld Brad J , Bottaro Martim 
Published: March 2017

Abstract
The purpose of this study was to compare strength gains in the lower limbs, assessed by one maximum repetition (1RM) and isokinetic peak torque (PT), in young men undergoing a resistance training (RT) program. Twenty-seven young men performed resistance training twice a week for 11 weeks. Training involved two exercises for the lower body, two for the upper body and one for the midsection performed with three sets of 8-12 repetitions to momentary muscle failure. Before and after the training period, participants performed the 1RM test in the 45° leg press and knee extension PT in isokinetic dynamometry. The Pearson correlation coefficient was used to assess the relationship between the changes in 1RM and PT, and the Bland-Altman test was performed to check for agreement between the strength changes of both tests. There were significant changes in 1RM and PT of 23.98% and 15.96%, respectively (p < 0.05). The changes in leg press 1RM were significantly higher than the ones in PT. The Bland-Altman analysis revealed that the tests were not equivalent. In conclusion, professionals and researchers involved in strength assessment should be aware that the results obtained by PT and 1RM are not equivalent when evaluating individual responsiveness and/or the efficacy of an intervention on muscle strength, as the results obtained show large variations and can be even conflicting.
Muscle Force-Velocity Relationships Observed in Four Different Functional Tests
Authors: Zivkovic Milena Z. , Djuric Sasa , Cuk Ivan , Suzovic Dejan , Jaric Slobodan 
Published: March 2017

Abstract
The aims of the present study were to investigate the shape and strength of the force-velocity relationships observed in different functional movement tests and explore the parameters depicting force, velocity and power producing capacities of the tested muscles. Twelve subjects were tested on maximum performance in vertical jumps, cycling, bench press throws, and bench pulls performed against different loads. Thereafter, both the averaged and maximum force and velocity variables recorded from individual trials were used for force–velocity relationship modeling. The observed individual force-velocity relationships were exceptionally strong (median correlation coefficients ranged from r = 0.930 to r = 0.995) and approximately linear independently of the test and variable type. Most of the relationship parameters observed from the averaged and maximum force and velocity variable types were strongly related in all tests (r = 0.789-0.991), except for those in vertical jumps (r = 0.485-0.930). However, the generalizability of the force-velocity relationship parameters depicting maximum force, velocity and power of the tested muscles across different tests was inconsistent and on average moderate. We concluded that the linear force-velocity relationship model based on either maximum or averaged force-velocity data could provide the outcomes depicting force, velocity and power generating capacity of the tested muscles, although such outcomes can only be partially generalized across different muscles.
Technique Selection ‘the Coaches Challenge’ Influencing Injury Risk During the First Contact Hand of the Round off Skill in Female Gymnastics
Authors: Farana Roman , Jandacka Daniel , Uchytil Jaroslav , Zahradnik David , Irwin Gareth 
Published: March 2017

AbstractThe importance of technique selection on elbow injury risk has been identified for the key round off skill in female gymnastics, with a focus on the second contact limb. The aim of this study was to shift the focus to the first contact limb and investigate the biomechanical injury risk during parallel and T-shape round-off (RO) techniques. Seven international-level female gymnasts performed 10 trials of the RO to back-handspring with parallel and T-shape hand positions. Synchronized kinematic (3D motion analysis system; 247 Hz) and kinetic (two force plates; 1235 Hz) data were collected for each trial. The t-test with effect size statistics determined differences between the two techniques. No significant differences were found for vertical, anterior posterior and resultant ground reaction force, elbow joint kinematics and kinetics. Specifically, the results highlighted that change in technique in RO skills did not influence first contact limb elbow joint mechanics and therefore, injury risk. The findings of the present study suggest the injury potential of this skill is focused on the second limb during the parallel technique of this fundamental gymnastic skill.
Adequacy of the Ultra-Short-Term HRV to Assess Adaptive Processes in Youth Female Basketball Players
Authors: Nakamura Fabio Y , Pereira Lucas A , Cal Abad Cesar C , Cruz Igor F , Flatt Andrew A , Esco Michael R , Loturco Irineu 
Published: March 2017

Abstract
Heart rate variability has been widely used to monitor athletes’ cardiac autonomic control changes induced by training and competition, and recently shorter recording times have been sought to improve its practicality. The aim of this study was to test the agreement between the (ultra-short-term) natural log of the root-mean-square difference of successive normal RR intervals (lnRMSSD - measured in only 1 min post-1 min stabilization) and the criterion lnRMSSD (measured in the last 5 min out of 10 min of recording) in young female basketball players. Furthermore, the correlation between training induced delta change in the ultra-short-term lnRMSSD and the criterion lnRMSSD was calculated. Seventeen players were assessed at rest pre- and post-eight weeks of training. Trivial effect sizes (-0.03 in the pre- and 0.10 in the post- treatment) were found in the comparison between the ultra-short-term lnRMSSD (3.29 ± 0.45 and 3.49 ± 0.35 ms, in the pre- and post-, respectively) and the criterion lnRMSSD (3.30 ± 0.40 and 3.45 ± 0.41 ms, in the pre- and post-, respectively) (intraclass correlation coefficient = 0.95 and 0.93). In both cases, the response to training was significant, with Pearson’s correlation of 0.82 between the delta changes of the ultra-short-term lnRMSSD and the criterion lnRMSSD. In conclusion, the lnRMSSD can be calculated within only 2 min of data acquisition (the 1st min discarded) in young female basketball players, with the ultra-short-term measure presenting similar sensitivity to training effects as the standard criterion measure.
Effects of Karate Fights on Achilles Tendon Stiffness Measured by Myotonometry
Authors: Pożarowszczyk Beata , Pawlaczyk Weronika , Smoter Małgorzata , Zarzycki Andrzej , Mroczek Dariusz , Kumorek Martyna , Witkowski Kazimierz , Adam Kawczyński 
Published: March 2017

Abstract
The aim of the study was to investigate the influence of karate fights on Achilles tendon stiffness in karate competitors. Eleven male karate fighters participated in the present study. A handheld MyotonPRO device (MyotonPRO, Myoton Ltd, Estonia) was applied to measure Achilles tendon stiffness in karate fighters. The Achilles tendon was tested 5 cm above the tuber calcanei. Stiffness measurements were performed before and after eight sparring fights. Each fight lasted 2 min and was separated by a 2 min rest period. Achilles tendon stiffness for the dominant leg increased significantly from before fights (751.57 ± 123.493 N/m) to immediately after fights (809.43 ± 160.425 N/m) (p = 0.012). Presented results should be used by strength and conditioning coaches in training programs as a way to decrease the risk of injury.
Plasma Actin, Gelsolin and Orosomucoid Levels after Eccentric Exercise
Authors: Tékus Éva , Váczi Márk , Horváth-Szalai Zoltán , Ludány Andrea , Kőszegi Tamás , Wilhelm Márta 
Published: March 2017

Abstract
The present study investigated the acute effect of eccentric exercise on blood plasma actin, gelsolin (GSN) and orosomucoid (AGP) levels in untrained and moderately trained individuals, and their correlation with exercise induced muscle damage (EIMD) markers (CK, intensity of muscle soreness and maximal voluntary contraction torque deficit). Healthy physical education students (6 untrained, 12 moderately trained) participated in this research. Actin, GSN, AGP and CK levels were measured in blood plasma at baseline, immediately, 1 h, 6 h and 24 h post-exercise comprising 90 eccentric quadriceps contractions performed on a dynamometer. There was significant time main effect for GSN, AGP, CK and significant difference was found between baseline and the lowest value of post-exercise GSN (p < 0.05), as well as baseline and the highest value of post-exercise AGP (p < 0.05). Relationships were found between GSN levels and other indirect EIMD markers (between all GSN levels at post-exercise and CK activity at 6 h, p < 0.05; GSNMIN and muscle soreness at post-exercise, p < 0.04), GSN and AGP; however, actin did not correlate at any time points with GSN. Actin, GSN, AGP and CK responses after eccentric exercise do not seem sensitive to training status. The plasma actin level is used as an indicator of injury, however, our results suggest that it is not an accurate marker of EIMD, while plasma GSN concentrations show a better relationship with EIMD and the post-exercise inflammatory process. The elevated plasma AGP and the correlation between GSN and AGP seem to be promising for assessment of exercise-induced muscle injury.
The Effect of Previous Wingate Performance Using one Body Region on Subsequent Wingate Performance Using a Different Body Region
Authors: Harvey Leonie , Bousson Matthew , McLellan Chris , Lovell Dale 
Published: March 2017

Abstract
The 30 second Wingate Anaerobic Test (WAnT) is the gold standard measure of anaerobic performance. The present investigation aimed to determine if a previous WAnT using one body region significantly affected a subsequent WAnT using a different body region. Twelve male university students (n = 12, 23 ± 2 years, 84 ± 16.1 kg, 178.5 ± 7.4 cm) volunteered to complete two repeated WAnT protocols (either lower body WAnT followed by an upper body WAnT or vice versa) on two separate testing occasions. The upper body WAnT was conducted on a modified electromagnetically braked cycle ergometer using a flywheel braking force corresponding to 5% bodyweight. The lower body WAnT was conducted on an electronically braked cycle ergometer using a flywheel braking force corresponding to 7.5% bodyweight. Participants had a 1 minute rest period for transition between WAnTs. Data are reported as mean ± standard deviation. No significant differences were identified in power indices for the lower body between 30 s WAnTs. When the upper body WAnT was performed 2nd, absolute peak power (p < 0.01), mean power (p < 0.001) and relative mean power (p < 0.001) were significantly lower compared to when the upper body WAnT was performed 1st. The value of maximum revolutions per minute was significantly lower (p < 0.001) when the upper body WAnT was performed after the lower body WAnT, compared to when it was performed 1st (193.3 ± 11.4 1st vs 179.8 ± 14.4 2nd). Previous upper body sprint exercise does not significantly affect lower body sprint exercise; however, previous lower body sprint exercise severely compromises subsequent upper body sprint performance.
Analysis of Motor Activities of Professional Soccer Players during the 2014 World Cup in Brazil
Authors: Chmura Paweł , Andrzejewski Marcin , Konefał Marek , Mroczek Dariusz , Rokita Andrzej , Chmura Jan 
Published: March 2017

Abstract
The aim of the present study was to analyze motor activities of soccer players in seven consecutive rounds of matches of the 2014 World Cup in Brazil and to compare the performance of the world champions, the German national team with other participating teams. The study sample comprised 905 observations of 340 soccer players, who played full-time matches in all seven rounds of the tournament. The study was conducted using data collected from the Castrol Performance Index, a kinematic game analysis system that records movements of players with semi-automatic cameras. The following variables were analyzed: total distance covered, the percentage of total distance covered at high intensity, the number of sprints, frequency of sprints and peak running speed. A statistically significant increase (p ≤ 0.01) was noted in total distance covered, the percentage of distance covered at high intensity and total number of sprints, between the quarter-finals and semi-finals of the World Cup tournament in Brazil. The German national team covered a significantly longer total distance (p ≤ 0.05) and had a greater percentage of distance covered at high intensity (p ≤ 0.001) than players from other teams. The obtained results point to the necessity of development of players’ aerobic endurance and speed-endurance abilities while preparing for top-level soccer tournaments. Winning a soccer championship requires players to run longer mean total distances and longer distances at high intensity during a single match.
Changes in the arteries in the course of hypertensive disease and extrasystoles
Authors: Didyc N. V. , Lysunets O. V. 
Published: March 2017

Our research is focused on study of changes in the intima-media vascular wall of patients suffering from hypertensive disease as well as patients suffering from hypertensive disease and coexistent extrasystole. We examined 120 patients (42 men and 78 women) between the ages 27 to 81 suffering from hypertensive disease of the II stage as defined by the Ukrainian Association of Cardiologists and extrasystoles (more than 30 episodes per hour of research) of different topography and 30 persons (13 men and 17 women) suffering from hypertensive disease of the II stage between the ages 30 to 76 without rhythm disturbance. The first clinical group was formed of 54 (45%) patients suffering from repeated supraventricular extrasystoles. The second clinical group was formed of 42 (35%) patients suffering from repeated ventricular arrhythmia. The third group was formed of 24 (20%) patients suffering from both repeated supraventricular extrasystoles and ventricular extrasystoles. The results of treatment demonstrate that the existence of repeated supraventricular extrasystoles and ventricular extrasystoles in patients suffering from hypertensive disease of the ІІ stage in contrast to patients without arrhythmia and repeated supraventricular extrasystoles is associatesd with severer vascular dysfunction, which is defined by signs of rather high rigidity of the large arteries (significant reduction of original size of brachial artery diameter), severer defects of endothelium-dependant vasodilation (reduction of increment value of brachial artery diameter during the test with decompression, reduction of periodicity of registration of normal reaction and increase of paradoxical vasoconstriction of the brachial artery during the test with decompression) and significant reduction of general vasodilational potential, increase of frequency of cases with dissociation in the nature of endothelium-dependant and endothelium-independent reaction of the brachial artery. The latter changes were registered in 90 (60.0%) of examined patients, the most frequent of their variants were: 1) reduced reaction of the brachial artery for decompression + normal response in the test with nitroglycerine (29.7%) and 2) paradoxical vasoconstriction in response to decompression + reduced reaction on taking nitroglycerine (22.4%).
In vitro effects of some metal ions on glutathione reductase in the gills and liver of Capoeta trutta
Authors: Kirici M. , Atamanalp M. , Kirici M. , Beydemir Ş. 
Published: March 2017

Many aquatic environmental problems have arisen in consequence of contamination of water by toxic metals and organic pollutants in the present age of technology. Metals play vital roles in enzyme activities and other metabolic events due to their bioaccumulative and nonbiodegradable properties among aquatic pollutants. The aim of this study was to evaluate the inhibitory effects of some metal ions (Ag+, Cu2+, Co2+, Ni2+, Pb2+ and Zn2+) on Capoeta trutta gill and liver glutathione reductase (EC: 1.8.1.7; GR). For this purpose, initially, GR was purified from C. trutta gill and liver. Purification procedure consisted of three steps; preparation of hemolysate, ammonium sulphate precipitation and 2’, 5’-ADP Sepharose 4B affinity chromatography. Using this procedure, C. turtta gill GR, having the specific activity of 19.111 EU/mg proteins, was purified with a yield of 38.8% and 910.05-fold; C. trutta liver GR, having the specific activity of 16.167 EU/mg proteins, was purified with a yield of 21.1% and 734.86-fold. The purity of the enzymes was checked on sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and each purified enzyme showed a single band on the gel. In addition, inhibitory effects of some metal ions (Ag+, Cu2+, Co2+, Ni2+, Pb2+ and Zn2+) on GR from gill and liver were investigated in vitro. Ki constants and IC50 values for metal ions which showed inhibition effects were determined by Lineweaver-Burk graps and plotting activity % vs. [I]. In conclusion, IC50 values for fish gill GR were 0.000625, 0.153, 0.220, 0.247 and 0.216 mM and Ki constants for fish gill GR were 0.00045 ± 0.00008, 0.128 ± 0.036, 0.182 ± 0.138, 0.482 ± 0.219 and 0.112 ± 0.047 mM for Ag+, Cu2+, Co2+, Ni2+, Pb2+ and Zn2+, respectively. IC50 values for fish liver GR were 0.000437, 0.217, 0.185, 0.355 and 0.349 mM and Ki constants for fish liver GR were 0.00025 ± 0.00013, 0.532 ± 0.146, 0.123 ± 0.066, 0.093 ± 0.020 and 0.151 ± 0.084 mM for Ag+, Cu2+, Co2+, Ni2+, Pb2+ and Zn2+, respectively. In vitro inhibition rank order was determined as Ag+ > Co2+ > Zn2+ > Ni2+ > Pb2+ for fish gill GR; Ag+ > Cu2+ > Co2+ > Pb2+ > Ni2+ for fish liver GR. From these results, we showed that Ag+ metal ion is the most potent inhibitor of GR enzyme on gill and liver tissues.