bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contribution of Liquid- and Gas-Side Mass Transfer Coefficients to Overall Mass Transfer Coefficient in Taylor Flow in a Microreactor
Authors: Sobieszuk Paweł , Ilnicki Filip , Pohorecki Ryszard 
Published: May 2014

Abstract
Gas-liquid microreactors find an increasing range of applications both in production, and for chemical analysis. The most often employed flow regime in these microreactors is Taylor flow. The rate of absorption of gases in liquids depends on gas-side and liquid-side resistances. There are several publications about liquid-side mass transfer coefficients in Taylor flow, but the data about gas-side mass transfer coefficients are practically non existent. We analysed the problem of gas-side mass transfer resistance in Taylor flow and determined conditions, in which it may influence the overall mass transfer rate. Investigations were performed using numerical simulations. The influence of the gas diffusivity, gas viscosity, channel diameter, bubble length and gas bubble velocity has been determined. It was found that in some case the mass transfer resistances in both phases are comparable and the gas-side resistance may be significant. In such cases, neglecting the gas-side coefficient may lead to errors in the experimental data interpretation.
Pumping Capacity of Pitched Blade Multi-Stage Impellers
Authors: Jirout Tomáš 
Published: May 2014

Abstract
This paper extends knowledge about flow in an agitated batch with pitched blade multi-stage impellers. Effects of various geometrical parameters (blade number, distance between impellers) of pitched blade multi-stage impellers on pumping ability have been investigated. Axial velocity profiles were measured by LDA (Laser Doppler Anemometry). Axial pumping capacities were obtained by integration of measured axial velocity profiles in outflow from impellers. Main attention was focused on the effect of the distance between impellers in multi-stage configurations, on their pumping capacity and flow in the mixing bath in comparison with an independently operating pitched blade impeller with the same geometry. In case of a relatively close distance between impellers H3/d = 0.5 - 0.75, the multi-stage impeller creates only one circulation loop and the impellers itself behave identically as pumps in series. However for relative higher distance of impellers than H3/d = 1.25, the multi-stage impeller creates two separated circulation loops.
Phosphate recovery from animal manure wastewater by struvite crystallization and CO2 degasification reactor
Authors: Zhang Tao , Li Ping , Fang Ci , Jiang Rongfeng 
Published: May 2014

Abstract
The problem of phosphorus discharge is related to environmental protection and food security. Struvite crystallization is a useful technology for phosphate recovery from wastewater. In the research, struvite crystallization process with CO2 degasification continuous U-shape reactor (CUSR) was application for phosphate recovery from animal manure wastewater. The result indicated PO4
3--P recovery ratio could achieve 47-53% without magnesium addition when CUSR hydraulic retention time controlled at 60 min. With extra magnesium addition, PO4
3--P recovery ratio could significant achieve 80-86% at magnesium addition amount 57.5 mg/dm3. PHREEQC modeling predictions trend of struvite crystallization was close to CUSR experimental results. The modeling calculation can provide a theoretical guide for operational parameters design. For seeding technology, high phosphate recovery efficiency was obtained and preformed struvite was the most effective seeding material. Surface characterization analysis demonstrated the dominant composition of chemical solids was struvite. Water extraction analysis indicated chemical solids recovery from animal manure wastewater could release PO4
3--P slowly and be available as slow-release fertilizer.
Impact of optical indices on particle size distribution of activated sludge measured by laser diffraction method
Authors: Sochan Agata , Polakowski Cezary , Łagód Grzegorz 
Published: May 2014

Abstract
The important factors that strongly influence the particle size distributions measured by the laser diffraction method are the optical parameters of the suspension (refractive index and absorption coefficient). Knowledge of the values of these parameters is necessary for Mie theory. Mie theory is applied for conversion of the intensity of light recorded on detectors into particle size distribution (PSD) of tested material. Both wastewater and activated sludge are mixtures of a variety of elements (mineral or organic, including living organisms). In practice, it is not possible to define clearly the values of the optical parameters, as the composition of the suspension changes over time. The aim of the study was to estimate the impact of assumed values of the optical parameters on particle size distributions obtained. The PSDs of suspensions sampled in different stages of wastewater treatment are the most reproducible when the following optical parameters are defined: absorption coefficients - 1.0 and the refractive index - 1.52.
Fully Analytical Characterization of the Series Inductance of Tapered Integrated Inductors
Authors: Passos Fabio , Fino M. Helena , Moreno Elisenda R. 
Published: May 2014

Abstract
In this paper a general method for the determination of the series inductance of polygonal tapered inductors is presented. The value obtained can be integrated into any integrated inductor lumped element model, thus granting the overall characterization of the device and the evaluation of performance parameters such as the quality factor or the resonance frequency. In this work, the inductor is divided into several segments and the corresponding self and mutual inductances are calculated. In the end, results obtained for several working examples are compared against electromagnetic (EM) simulations are performed in order to check the validity of the model for square, hexagonal, octagonal and tapered inductors. The proposed method depends exclusively on the geometric characteristics of the inductor as well as the technological parameters. This allows its straight forward application to any inductor shape or technology.
The Retroaortic Left Renal Vein Abnormalities in Cross-Sectional Imaging
Authors: Şahin Cennet , Kaçira Özlem Kitiki , Tüney Davut 
Published: May 2014

ABSTRACT
OBJECTIVE: The normal anatomic course of the left renal vein (LRV) from the kidney to inferior vena cava (IVC) is usually preaortic. It is called retroaortic left renal vein (RLRV) when located between the aorta and vertebra; the circumaortic left renal vein (CLRV) has both a preaortic and retroaortic course. In this study, we aimed to find the incidence and characteristics of LRV abnormalities in routine abdominal CT and MR examinations conducted in our clinic. MATERIALS AND METHODS: A total of 2189 abdominal CT and MR examinations, performed between April 2007 and June 2009, were reviewed retrospectively for retroaortic and circumaortic LRV abnormalities. RESULTS: LRV abnormalities were detected in 50 (2.3%) examinations. Forty-four of these (2%) were RLRV and 6 (0.3%) were circumaortic LRV abnormalities. CONCLUSIONS: Preoperative knowledge of LRV abnormalities facilitates the safe performance of surgery and reveals the clinical symptoms. It is easy to see LRV and its drainage way on routine CT and MR imagings
The Structure of Trauma Patients, its Management and Health Care in the University Hospital of Alexandroupolis
Authors: Tsatsanidis Georgios V. , Minopoulos Georgios I. , Liratzopoulos Nicolaos D. , Papathanasiou Jannis V. , Simopoulos Konstantinos E. 
Published: May 2014

ABSTRACT
OBJECTIVE: The present study was designed to describe the patterns of trauma patients using a newly-introduced trauma registry, as well as retrospectively assess the management and outcome facts of these patients. MATERIALS AND METHODS: The study included 2346 patients (62.15% male) with a mean age of 34.06 ± 23.77 years. Of these patients, 355 were multiple trauma patients. Privately owned vehicles were used as a mode of transportation for most of the trauma patients (96.65%). Data regarding patient demographics, arrival at the Emergency Department, mechanism of injury, injury severity, anatomical location and type of injury were collected and analyzed. RESULTS: Falls were the most prevalent mechanism of injury, accounting for 62.19% of the total admitted cases, with other causes (that also included occupational accidents and machinery trauma) being the second most prevalent, and MVAs - the third with a rate of 11.46%. The most commonly injured body regions were the extremities (50.26%), the head (42.50%), and the torso (19.39%). Fractures represented 11.46% of the injuries, while open wounds were much more frequent (29.41%). The mean abbreviated injury severity (AIS) score was 1.78 ± 1.48 for all admitted patients and 3.56 ± 1.02 for multiple trauma patients. A multi-disciplinary approach was required for 23% of the multiple trauma patients. The clinic admission rate for the whole patient sample was 13.55% and 48.96% for multiple trauma patients. The mean duration of stay for all clinic admissions was 2.7 days and 2.9 days for multiple trauma patients. CONCLUSIONS: With the epidemiology of trauma in Greece being rather poorly investigated, the present study manages to identify the major epidemiological patterns of trauma cases presenting to a tertiary regional hospital and addresses the need for development and implementation of injury prevention activities and policies
Environmental conditions that promote the occurrence of truffles (Tuber spp.) on historical sites in Poland
Authors: Rosa-Gruszecka Aleksandra , Hilszczańska Dorota , Szmidla Hanna 
Published: May 2014

Abstract
This article highlights historical data regarding truffles’ occurrence in Poland. Along with the soil parameters the plant communities at the sites were studied. The results of the chemical soil analyses showed that the soil pH in water on 5 sites was acidic (from 4.3 to 6.1), and only in one, Wiązowna, was the pH (7.2) conductive to truffles development. Similarly, the content of calcium carbonate (CaCO3) in soil samples was low (from 0 to 0.03%), except for Wiązowna, where CaCO3 was 0.12%. Among the 24 reported species of trees and shrubs, 7 species were host-plants of summer truffle (Tuber aestivum Vitt.). Out of the 7 species, oak and hornbeam were present at four localisations. Across the sites, 31 species of ground-layer plants were identified. Among these, Epipactis helleborine was only one host-species of summer truffle. Our findings indicate that formation of truffles fruiting-bodies depends on specific habitat characteristics. The key factors determining this process are soil parameters, such as: texture, pH and calcium content. Our inventory showed that the sites we studied still persist as natural stands, although only one of them seems to be favorable for truffles development: this site is located in Wiązowna, where soil is of pH 7.2 and E. helleborine, (host species for truffles from Orchidaceae) is found, fulfills the environmental requirements of truffles
Evaluating variation in logged timber costs and raw timber prices during the period, 2001–2009, for the Regional Directorate of the State Forests in Zielona Góra
Authors: Adamowicz Krzysztof , Kaciunka Henryka 
Published: May 2014

Abstract
The rate of change in the cost of logged timber and prices of raw timber during the period, 2001-2009, was examined for the Regional Directorate of the State Forests in Zielona Góra. A logarithmic evaluation of average rate of change indicated that the rate of increase in timber harvest costs was higher than the rate of increase in the average price of raw timber and likewise the price of most log grades. The average increase in raw timber value was 2.51% annually. The price of low-diameter raw timber (slash) increased 8.61%, and the price of large-diameter timber increased 1.94% annually, while the price of large coniferous segments increased 1.75% and broadleaf segments increased 2.98% annually. At the same time, the timber logging costs increased more than the timber price, to 4.17%, or 4.19% when administrative costs related to timber logging are included
Rare-element granitic pegmatite of Miocene age emplaced in UHP rocks from Visole, Pohorje Mountains (Eastern Alps, Slovenia): accessory minerals, monazite and uraninite chemical dating
Authors: Uher Pavel , Janák Marian , Konečný Patrik , Vrabec Mirijam 
Published: May 2014

Abstract
The granitic pegmatite dike intruded the Cretaceous UHP rocks at Visole, near Slovenska Bistrica, in the Pohorje Mountains (Slovenia). The rock consists mainly of K-feldspar, albite and quartz, subordinate muscovite and biotite, while the accessory minerals include spessartine-almandine, zircon, ferrocolumbite, fluorapatite, monazite- (Ce), uraninite, and magnetite. Compositions of garnet (Sps48-49Alm45-46Grs + And3-4 Prp1.5-2), metamict zircon with 3.5 to 7.8 wt. % HfO2 [atom. 100Hf/(Hf + Zr) = 3.3-7.7] and ferrocolumbite [atom. Mn/(Mn + Fe) = 0.27-0.43, Ta/(Ta + Nb) = 0.03-0.46] indicate a relatively low to medium degree of magmatic fractionation, characteristic of the muscovite - rare-element class or beryl-columbite subtype of the rare-element class pegmatites. Monazite-(Ce) reveals elevated Th and U contents (≤11 wt. % ThO2, ≤5 wt. % UO2). The monazite-garnet geothermometer shows a possible precipitation temperature of ~495 ± 30 °C at P~4 to 5 kbar. Chemical U-Th-Pb dating of the monazite yielded a Miocene age (17.2 ± 1.8 Ma), whereas uraninite gave a younger (~14 Ma) age. These ages are comtemporaneous with the main crystallization and emplacement of the Pohorje pluton and adjacent volcanic rocks (20 to 15 Ma), providing the first documented evidence of Neogene granitic pegmatites in the Eastern Alps. Consequently, the Visole pegmatite belongs to the youngest rare-element granitic pegmatite populations in Europe, together with the Paleogene pegmatite occurrences along the Periadriatic (Insubric) Fault System in the Alps and in the Rhodope Massif, as well as the Late Miocene to Pliocene pegmatites in the Tuscany magmatic province (mainly on the Island of Elba).
Calculating the Home Advantage in Soccer Leagues
Authors: Gómez Miguel-Ángel , Pollard Richard 
Published: May 2014

Abstract
A recent article published in the Journal of Human Kinetics (Saavedra et al., 2013) was based on a flawed methodology when calculating the home advantage values in soccer leagues. This led to incorrect calculations, false conclusions and some misleading results about home advantage in 52 soccer leagues of UEFA countries over a 10 year period. The aim of this letter was to explain these flaws and to make sure future research would not be influenced by the subsequent results and conclusions that had been presented
Ground Reaction Force and Valgus Knee Loading during Landing after a Block in Female Volleyball Players
Authors: Zahradnik David , Uchytil Jaroslav , Farana Roman , Jandacka Daniel 
Published: May 2014

Abstract
A non-contact anterior cruciate ligament (ACL) injury is both a serious and very common problem in volleyball. The aim of the study was to determine the association between stick, step-back, and run-back landings after a block and select risk factors of ACL injuries for female professional volleyball players. The research sample involved fourteen female professional volleyball players. Two force plates were used to determine ground reaction forces. Eight infrared cameras were employed to collect the kinematic data. The one-factor repeated-measures analysis of variance, where the landing type was the factor, was used for comparing the valgus moment and ground reaction force on the right lower limb. ANOVA showed that the type of landing has a main effect on the valgus moment on the right lower limb (F) = 5.96, p = 0.019df = 1.18, partial ƞ2 = 0.239 and SP = 0.693). Furthermore, it did not show a main effect on the vertical reaction force on the right lower limb ((F)=2.77, p=0.090, df=1.55, partial ƞ2= 0.128 and SP=0.448). The highest valgus moment occurred during the run-back landing. This moment, however, did not have any effect within the first 100 ms after initial contact with the ground, but rather upon the subsequent motion carried out when stepping back off the net. A comparison between a run-back landing and a step-back landing showed relevant higher values of vertical ground reaction forces during the run-back landing.
Short-Term Performance Effects of Three Different Low-Volume Strength-Training Programmes in College Male Soccer Players
Authors: Brito João , Vasconcellos Fabrício , Oliveira José , Krustrup Peter , Rebelo António 
Published: May 2014

Abstract
This study aimed to analyse the short-term performance effects of three in-season low-volume strength-training programmes in college male soccer players. Fifty-seven male college soccer players (age: 20.3

1.6 years) were randomly assigned to a resistance-training group (n=12), plyometric training group (n=12), complex training group (n=12), or a control group (n=21). In the mid-season, players underwent a 9-week strength-training programme, with two 20 min training sessions per week. Short-term effects on strength, sprint, agility, and vertical jump abilities were measured. All training groups increased 1-RM squat (range, 17.2-24.2%), plantar flexion (29.1-39.6%), and knee extension (0.5- 22.2%) strength compared with the control group (p<0.05). The resistance-training group increased concentric peak torque of the knee extensor muscles by 9.9-13.7%, and changes were greater compared with the control group (p<0.05). The complex training group presented major increments (11.7%) in eccentric peak torque of the knee flexor muscles on the non-dominant limb compared with the control group and plyometric training group (p<0.05). All training groups improved 20-m sprint performance by 4.6-6.2% (p<0.001) compared with the control group. No differences were observed in 5-m sprint and agility performances (p>0.05). Overall, the results suggest that in-season low-volume strength training is adequate for developing strength and speed in soccer players.
Chronic Effects of Different Resistance Training Exercise Orders on Flexibility in Elite Judo Athletes
Authors: Saraiva Alam R. , Reis Victor M. , Costa Pablo B. , Bentes Claudio M. , Costa e Silva Gabriel V. , Novaes Jefferson S. 
Published: May 2014

Abstract
The aim of this study was to examine the effects of twelve weeks of resistance training with different exercise orders (upper limbs and lower limbs vs. lower limbs and upper limbs) on flexibility levels in elite judo athletes. Thirtynine male athletes were randomly divided into 3 groups as follows: G1 (n = 13), G2 (n = 13), and CG (n = 13). The flexibility was assessed on 8 joint movements: shoulder flexion and shoulder extension, shoulder abduction and shoulder adduction, trunk flexion and trunk extension, and hip flexion and hip extension. Two-way repeated measures ANOVAs (time [pre-experimental vs. post-experimental] × group [G1 vs. G2 vs. CG]) were used to compare the differences between pre- and post-test situations and the differences among groups. The results from the within-group (pre vs. post) comparisons demonstrated significant increases (p < 0.05) in the range of motion of 3.93 and 5.96% for G1 and G2 training groups, respectively, in all joints. No significant changes (p > 0.05) were observed for the CG. The results from the between-group comparisons demonstrated no significant differences (p > 0.05) in the range of motion between G1post vs. G2post (1.15%). Although both exercise orders (from upper to lower limbs and from lower to upper limbs) increased flexibility, no significant variations were observed between the different exercise orders. Nevertheless, these findings demonstrate that flexibility gains could be obtained with a resistance training program, and thus, more time can be devoted to sports-specific judo training.
The Effect of Active Recovery on Power Performance During the Bench Press Exercise
Authors: Lopes Felipe A. S. , Panissa Valéria L. G. , Julio Ursula F. , Menegon Elton M. , Franchini Emerson 
Published: May 2014

Abstract
The objective of this study was to verify the effect of active and passive recovery on blood lactate concentration and power performance. Twelve male subjects were submitted to a maximal strength test in the the bench press, a maximal aerobic test in the bench step, and to four sets of bench press exercise performed as fast and as long as possible, using 80% of maximal strength when active or passive recovery was performed. The maximum number of repetitions, mean and peak power in eccentric and concentric phases were computed and blood lactate concentration was measured. Comparisons for the variables were made using a two-way variance analysis (recovery type and set numer) with repeated measures in the second factor. When significant differences were detected (p < 0.05), a Tukey post-hoc test was used. There was a main effect of set number on maximum number of repetitions (p < 0.05) (1 > 2, 3, and 4; 2 > 3 and 4; 3 > 4). Mean and peak power in both eccentric and concentric phases also differed across sets (1 > 2, 3, and 4; 2 > 4). There was also a main effect for the recovery type, with lower values (p < 0.05) observed for the active recovery compared to the passive one. It can be concluded that active recovery resulted in lower lactate concentration, but did not improve power performance in the bench press exercise.
Cooperation for forest protection in Southeast Asia: the role of Japan and its domestic interest groups
Authors: Didvalis Linas 
Published: May 2014

Abstract
This article examines Japan’s role in advancing regional forest governance in Southeast Asia and reasons why the country, despite claiming environmental leadership, has not created a strong long-term institutional framework to promote sustainable forest management (SFM). The first half of the article is dedicated to analyzing Asia Forest Partnership and bilateral agreements with Indonesia and Malaysia in the light of implementation of SFM. The second half examines Japan’s domestic interest groups and their attitudes towards SFM and cooperation for forest protection with the Southeast Asian countries. The article argues that the gap between Japan’s commitments and actual activities has not been closed in the most recent cooperation for forest protection in the region. One of the major reasons for that is the strength and resistance against the regulations of the Japanese companies that benefit from the free trade of tropical timber.
TDR technique for estimating the intensity of effective non rainfall
Authors: Janik Grzegorz , Skierucha Wojciech , Błaś Marek , Sobik Mieczysław , Albert Małgorzata , Dubicki Michał , Zawada Anna 
Published: May 2014

Abstract
The objective of this paper is to present a method for determining diurnal distribution of the intensity of effective non rainfall water flux. It was found that the application of TDR technique for the determination of diurnal dynamics of effective non rainfall water flux requires temperature correction of sensed volumetric moisture contents. Without temperature correction the error of estimated non rainfall water flux can be as much as 26%. In addition, the effect of temperature changes on the soil surface was determined in 0.5, 1, 2, 3, 4, and 5 hours periods. It was found that the intensity of effective non rainfall water flux was determined to the greatest extent by the rate of temperature drop during the period of 3 h preceding the non rainfall water flux determination. The agreement of non rainfall water flux calculated with the method proposed and that obtained by the collector was better for dew than for hoarfrost periods.