bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical Study of a Boundary Layer Bleedfor a Rocket-Based Combined-Cycle Inlet in Ejector Mode
Authors: Shi Lei , He Guoqiang , Qin Fei , Wei Xianggeng 
Published: May 2014

AbstractFully integrated numerical simulations were performed for a ready-made central strut-based rocket-based combined-cycle (RBCC) engine operating in ejector mode, and the applicability of using a boundary layer bleed in the RBCC inlet designed for supersonic speeds was investigated in detail. The operational mechanism of the boundary layer bleed and its effects on the RBCC inlet and the engine under different off-design conditions in ejector mode were determined. The boundary layer bleed played different roles in the RBCC inlet for different flight regimes. When the RBCC engine took off, some air was entrained into the inlet through the bleed block, thereby inducing significant flow separation and a low-speed vortex, which deteriorated the inner flow and reduced the entraining air mass flow rate: thus, the total pressure loss increased and extra drag was exerted on the inlet. In the low subsonic regime, the bleed block had almost no impact on the RBCC engine and its inlet. However, as the RBCC engine accelerated into a high subsonic flight regime, the boundary layer bleed had a clearly positive effect, comprehensively improving the performance of the RBCC inlet. A boundary layer bleed operation strategy for the RBCC inlet in ejector mode was also developed in this study.
Frequency-domain Model Matching PID Controller Design for Aero-engine
Authors: Liu Nan , Huang Jinquan , Lu Feng 
Published: May 2014

AbstractThe nonlinear model of aero-engine was linearized at multiple operation points by using frequency response method. The validation results indicate high accuracy of static and dynamic characteristics of the linear models. The improved PID tuning method of frequency-domain model matching was proposed with the system stability condition considered. The proposed method was applied to the design of PID controller of the high pressure rotor speed control in the flight envelope, and the control effects were evaluated by the nonlinear model. Simulation results show that the system had quick dynamic response with zero overshoot and zero steadystate error. Furthermore, a PID-fuzzy switching control scheme for aero-engine was designed, and the fuzzy switching system stability was proved. Simulations were studied to validate the applicability of the multiple PIDs fuzzy switching controller for aero-engine with wide range dynamics.
THAT RISING CORN ... CE BLE QUI LEVE ... DIE AUFGEHENDE SAAT ... TOWARDS A COMMON TRANSLATION PROFILE
Authors: Gerzymisch-Arbogast Heidrun 
Published: May 2014

Abstract
The article positions the role of translation theory vis-à.-vis the challenges of translation practice. After portraying its heterogeneous historical development and the ensuing compartrnentalization of translation today, it argues that translation theory has developed a theoretical and methodological profile in the past twenty years as a useful resource for translation practice in the future. With the understanding that any discipline as a whole sustains its success only when operating on coherent concepts and methodologies, a possible common methodological ground for the complex dimensions of translation is outlined and discussed with special reference to what it can offer to the practice of literary translation. Against this background it is illustrated that conceptual and methodological coherence and transparency are not only useful standards when making and discussing literary translation decisions but are the essential backbone for the continued success of translation as a discipline
Der Kaufmann ohne Eigenschaften: Wie Daniel Defoes Complete Tradesman im System der Kommunikationen verschwindet
Authors: Huck Christian 
Published: May 2014

Abstract
This article is based on the observation of a discrepancy: The tradesman, arguably one of the most important figures of eighteenth-century society, is astonishingly absent in most portraits of this century. It will be argued that such omission is more than welcome to the individuals in question. The public task of the tradesman is to a,ct as the medium of trade, and in order to perform such function he has to be as unobtrusive as possible, as if producer and consumer were dealing with each other directly. Obviously, no tradesman is without an agenda of his own, but to fulfil the position society expects from him, he has to present himself just as if he were not there. To function as a medium, the tradesman himself has to be, and, most importantly, look medium, that is: middling, average, normal, and inconspicuous. The tradesman then becomes the model of a modern individual: the man without qualities. Women, on the other hand, are denied such a place in modern, functionally differentiated society
SrPdGa3 – An orthorhombic superstructure of the ThCr2 Si2 type
Authors: Seidel Stefan , Hoffmann Rolf-Dieter , Pöttgen Rainer 
Published: May 2014

Abstract
The gallide SrPdGa3 was synthesized by melting of the elements in a sealed tantalum tube in an induction furnace. SrPdGa3 crystallizes with a new structure type which was determined on the basis of single-crystal X-ray diffractometer data: Cmcm, a=643.7(1), b=1044.9(2), c=600.4(1) pm, wR=0.0283, 504 F
2 values, 19 variables. SrPdGa3 is a new ternary ordering variant of the aristotype BaAl4/ThCr2 Si2. The structural relation with ThCr2 Si2 and the closely related silicide BaNi2 Si2 is discussed on the basis of a group-subgroup relation. The three-dimensional [PdGa3]δ– network is dominated by Pd-Ga and Ga-Ga bonding interactions with 251–256 pm Pd-Ga and 267 pm Ga-Ga distances.
Environmental radioactivity in southern Serbia at locations where depleted uranium was used
Authors: Sarap Nataša B. , Janković Marija M. , Todorović Dragana J. , Nikolić Jelena D. , Kovačević Milojko S. 
Published: May 2014

Abstract
In the 1999 bombing of the Federal Republic of Yugoslavia, NATO forces used ammunition containing depleted uranium. The cleaning of depleted uranium that followed was performed in southern Serbia by the Vinča Institute of Nuclear Sciences between 2002 and 2007 at the locations of Pljačkovica, Borovac, Bratoselce, and Reljan. This paper presents detailed results of radioactivity monitoring four years after cleaning (2011), which included the determination of gamma emitters in soil, water, and plant samples, as well as gross alpha and beta activities in water samples. The gamma spectrometry results showed the presence of natural radionuclides 226Ra, 232Th, 40K, 235U, 238U, and the produced radionuclide 137Cs (from the Chernobyl accident). In order to evaluate the radiological hazard from soil, the radium equivalent activity, the gamma dose rate, the external hazard index, and the annual effective dose were calculated. Considering that a significant number of people inhabit the studied locations, the periodical monitoring of radionuclide content is vital.
Participation of Membrane Nanotubes in Intercellular Communication
Authors: Knopik-Skrocka Agnieszka , Śniegowska Agata 
Published: May 2014

Summary
A few years ago, a so far unknown type of intercellular connections, involved in communication was discovered. Due to their specific nano-architecture, these connections were named membrane nanotubes or tunneling nanotubes. Nanotubes ensure the transfer of both membrane and cytosolic cellular components, including organelles. Nanotubes also participate in calcium signal transduction and apoptosis signal. The length of the distance at which cells contact via nanotubes reaches several hundred micrometers. The published data suggest that nanotubes have heterogeneous structure. Among them, there are nanotubes which provide direct contact of the cytoplasm in connected cells (open-ended structure), and those, in which the transport requires overcoming a barrier, which is the cell membrane (close-ended structure). An important finding in the study of membrane nanotubes was demonstrating the ability of these connections of the intercellular transfer of pathogens, such as HIV, or abnormal form of PrP prion protein. In addition, nanotubes mediate a transport of MDR protein, involved in resistance of cancer cells to chemotherapy. It means that this type of cell connection may play an important role in the pathomechanism of AIDS, prion as well as cancer diseases.
Fossil fruit of Cocos L. (Arecaceae) from Maastrichtian-Danian sediments of central India and its phytogeographical significance
Authors: Srivastava Rashmi , Srivastava Gaurav 
Published: May 2014

ABSTRACT
A fossilised palm fruit of Cocos L. (C. binoriensis sp. nov.) is reported from the Binori Reserve Forest, Ghansor, Seoni District, Madhya Pradesh, India. The fruit is a 3-dimensionally preserved drupe, ovoid with clearly visible longitudinal ridges. The husk is made up of a thin smooth exocarp and fibrous mesocarp, with vertical and horizontal fibres present on the inner surface of the endocarp. The fruit is Maastrichtian-Danian in age and is the world’s oldest fossil record of Cocos. The genus Cocos is now distributed in coastal areas of pantropical regions. The occurrence of Cocos along with coastal and mangrove remains such as Acrostichum, Barringtonia, Nypa, Sonneratia and marine algae Distichoplax and Peyssonellia previously recorded from Deccan Intertrappean beds further confirms the proximity of sea in the area in central India and indicates warm and humid conditions. The presence of Cocos and previously recorded palaeoflora supports the existence of tropical wet evergreen to semi-evergreen forests at the time of deposition in the area, in contrast to the dry to moist deciduous forests existing today in central India. The probable reasons for the change in climatic conditions are withdrawal of an arm of the sea from central India, the change in latitude, and a significant uplift of the Western Ghats during post-trappean times.
Coal Cleaning Versus the Reduction of Mercury and other Trace Elements’ Emissions from Coal Combustion Processes
Authors: Zajusz-Zubek Elwira , Konieczyński Jan 
Published: May 2014

Abstract
Samples of steam coal used in heat and power plants as well as densimetric fractions obtained on a laboratory scale by dense organic liquid separation have been examined. The contents of ash, mercury, chromium, cadmium, copper, nickel and lead have been determined in coal, in the light and medium fraction as well as in the refuse. The degree of removal of mineral matter and the examined heavy metals as well as the coal combustible parts yield have been determined. Examination of 5 coals revealed that it is possible to remove 41% of mercury and more than 35% of other heavy metals bound to mineral matter in coal.
Classical Tauberian Theorems for the (C; 1; 1) Summability Method
Authors: Totur Ümit 
Published: May 2014

Abstract
In this paper we generalize some classical Tauberian theorems for single sequences to double sequences. One-sided Tauberian theorem and generalized Littlewood theorem for (C; 1; 1) summability method are given as corollaries of the main results. Mathematics Subject Classification 2010: 40E05, 40G0
ACID MINE DRAINAGE TREATMENT BY PERLITE NANOMINERAL, BATCH AND CONTINUOUS SYSTEMS
Authors: Shabani Kumars Seifpanahi , Ardejani Faramarz Doulati , Badii Khshayar , Olya Mohammad Ebrahim 
Published: May 2014

Abstract
In this paper the adsorption activity of perlite nanoparticles for removal of Cu2+, Fe2+ and Mn2+ ions at Iran Sarcheshmeh copper acid mine drainage was discussed. Thus, raw perlite that provided from internal resource was modified and prepared via particles size reduction to nano scale and characterized by X-ray diffraction, X-ray fluorescence, scanning electron microscopy, transmission electron microscopy, Fourier transforms infrared and BET specific surface area analysis. The results of acid mine drainage show that pH of acid mine drainage is 5.1 and Cu2+, Fe2+ and Mn2+ ions are 10.5, 4.1 and 8.3 ppm, respectively. Firstly in the batch system the influence of adsorbent dose and temperature parameters were considered and then isothermal and kinetic models were investigated. According to the results the Langmuir isotherm and pseudo-second order kinetic model showed better correlation with the experimental data than other isotherm and kinetic models. Obtained thermodynamic parameters such as ΔG°, ΔH° and ΔS° show that the Cu2+, Fe2+ and Mn2+ ions adsorption from acid mine drainage is spontaneous and endothermic. Finally, perlite nanoparticles adsorbent was packed inside a glass column and used for the removal of heavy metals in 1, 3, 5 ml/min acid mine drainage flow rates, the breakthrough curves show that the column was saturated at 180, 240 and 315 min for different flow rates, respectively. According to the obtained results, this abundant, locally available and cheap silicate mineral showed a great efficiency for the removal of heavy metal pollutants from acid mine drainage and can be utilized for much volume of acid mine drainage or industrial scale.
SIMULATION METHOD OF DESIGNING AND SELECTING TENSIONING SYSTEMS FOR MINING BELT CONVEYORS
Authors: Kulinowski Piotr 
Published: May 2014

Abstract
This article deals with a methodology developed to design and select tensioning systems with using simulation studies on a belt conveyor model. It describes the structure of a dynamic model of a belt conveyor with distributed parameters and details of physical models of the applied belt tensioning systems. For proper display and comparison of work described tensioning systems are shown examples of the results of simulations carried out on a discrete model of the mining belt conveyor.
Presented methodology has been verified through industrial research and realization of a number of complex projects requiring simulation tests of take-up systems of belt conveyors.
INVESTIGATING THE SLOPE STABILITY BASED ON UNCERTAINTY BY USING FUZZY POSSIBILITY THEORY
Authors: Hosseini Navid , Gholinejad Mehran 
Published: May 2014

Abstract
The main purpose of this paper is to investigate the slope stability condition by using fuzzy estimation method based on fuzzy possibility theory. Due to use of this theory, the inaccuracy, ambiguity and uncertainty in input parameters are considered and therefore, the calculated factor of safety (FOS) is highly reliable. In this research, first, the input parameters of slope stability analysis, based on statistical characteristics and grade of membership concept, as a fuzzy numbers are defined. Then the performance function of slope behavior is defined and by using the fuzzy parameters, the FOS is calculated. In next step, by using the several α - cut, the calculated FOS is defined as a fuzzy form and subsequently, the slope stability condition based on fuzzy presentation of FOS is evaluated. The results show that, although based on deterministic analysis the studied slope is stable but based on fuzzy interpretation of FOS, the slope stability condition is scare. The fuzzy analysis of slope stability condition, by applying the uncertainty in calculating the FOS and defining the grade of membership for each unknown input parameters in model, a more realistic interpretation of slope stability condition is provided. In addition, the fuzzy presentation of the FOS, allowing more accurate judgments about slope stability condition.
STUDY OF CHEMICAL SURFACE STRUCTURE OF NATURAL SORBENTS USED FOR REMOVING OF Pb2+ IONS FROM MODEL AQUEOUS SOLUTIONS (PART II)
Authors: Bożęcka Agnieszka , Bożęcki Piotr , Sanak-Rydlewska Stanisława 
Published: May 2014

Abstract
This article presents the results of the chemical structure research of organic sorbent surface such as walnut shells, plums stones and sunflower hulls with using such methods as infrared spectrometry (FTIR) and elemental analysis. Based on the IR spectra identification of functional groups present on the surface of studied materials has been done as well as determination of their effect on the sorption mechanism of Pb2+ ions from aqueous model solutions
DETERMINATION AND ANALYSIS OF THE THEORETICAL PRODUCTION OF A BUCKET WHEEL EXCAVATOR
Authors: Zhao-Xue Che , Yan-Long Chen 
Published: May 2014

Abstract
The theoretical capacity of a bucket wheel excavator is the basis of mining theory. The paper concludes that the use of “1/cosφ” to adjust the speed of a bucket wheel excavator will result in rapid speeds, which may cause nonuniform flow from the distribution of material flow, and decreased capacity utilization. Consequently, this scenario may produce unreasonable structure parameters and performance parameters that are based on theoretical analysis and mathematical derivation. If the rotary speed of an excavator body is too fast, it will require excessive mechanical strength and will generate increased rotary drive power, power consumption and extractive costs. Thus, the rotary speed of an excavator body should be appropriately reduced.
Ultrastructure of the eggshell of selected Palaeognathae species – a comparative analysis
Authors: Szczerbińska Danuta , Wiercińska Monika 
Published: May 2014

AbstractThe study aimed at comparative analysis of the eggshell ultrastructure, indicating differences and similarities in its structure depending on the bird species. The study was carried out in ostrich, emu and rhea breeding flocks. The birds were kept under open system. The ostrich flock comprised 6 females and 3 males, the emu flock included 22 birds with equal sex ratio, while the rhea flock consisted of 16 females and 4 males. Emus and rheas were 5 years old and in their 3rd laying year, whereas ostriches were 4 years old and in their 2nd laying year. The analysis of eggshell ultrastructure and porosity was performed on the post-hatching eggshells being obtained after the incubation of eggs from around peak laying period of these birds. In total, 27 eggshells were evaluated, 9 of each species. Analysis of the ultrastructure of ostrich, emu and rhea eggshells showed their different architecture being dependent on the bird species. The cuticle in ostrich eggs adhered firmly to the vertical crystal layer, it mainly occurred around pore canal orifices in rhea eggs, while only its residual presence was observed in emu eggs. The percentage of the vertical crystal layer was similar in the ostrich and rhea eggshells (2-3%) but significantly higher in the emu eggshells (9%). The largest number of mammillae per unit of inner eggshell surface area was recorded in emus, while the broadest palisades in rheas. The ostrich eggshells were shown to be characterised by the least number of pores per unit of surface area, with significantly narrower pore canals.
Effect of copper glycinate chelate on biomechanical, morphometric and chemical properties of chicken femur
Authors: Kwiecień Małgorzata , Winiarska-Mieczan Anna , Zawiślak Kazimierz , Sroka Szymon 
Published: May 2014

AbstractThe effect of Cu in the form of glycinate chelate, added to chicken feed mixtures, on biomechanical, morphometric and chemical parameters of chicken femur bones was evaluated at 6 weeks of age. Three hundred one-day-old Ross 308 male chicks were divided into 6 groups each in 5 repetitions of 10 chicks. The basal feed mixtures contained: starter 6.1 mg·kg-1 Cu, grower 6.21 mg·kg-1 Cu, finisher 5.91 mg·kg-1 Cu. In the experiment 8, 4 or 2 mg·kg-1 of copper were added to the premix (containing no Cu) in the form of copper sulfate (S-Cu) or as copper glycinate chelate (Gly-Cu). The highest cortical index and maximum elastic strength towards bone weight were observed when S-Cu was added to the mixture at 25% of the requirement. Higher values of the maximum elastic strength were recorded in groups receiving 100% and 50% Gly-Cu compared to the group fed with 100% and 25% S-Cu. In chickens receiving Gly-Cu significantly higher Ix values were recorded in comparison with the group receiving 50% S-Cu. As an alternative to iron sulfate Ross 308 broiler chickens can be fed with Fe in the form of copper glycinate chelate. The use of chelate in the amount limited to 10 or 20 mg·kg-1 did not result in worse physicochemical, strength and morphometric parameters of chicken femurs compared to the recommended dose (40 mg·kg-1).
The Effect of Using DNA Obtained from Blood of Cattle with Genetic Chimerism on Illumina’s Beadchip Assay Performance
Authors: Gurgul Artur , Rubiś Dominika , Bugno-Poniewierska Monika 
Published: May 2014

Abstract
Blood cell chimerism is a common phenomenon occurring in cattle coming from double or multiple parturitions and can be observed as two DNA profiles present in blood of each of twin born animals. In the era of genomics, a large number of animals is being genotyped with high throughput genotyping methods, which are giving limited insight into the performance of single markers and rather only statistical description of the results is available for a common user. This hampers the detailed analysis of the results obtained and direct identification of the causes of poorer performance of some samples. In this study we describe the influence of analysis of DNA obtained from blood samples of cattle with genetic chimerism on basic parameters of Infinium technology-based Illumina’s genotyping arrays. The results obtained may help to identify such samples, especially when no precise information about the animals’ origin is available
Morphological characteristics of the double ureter from its origin up to the end
Authors: M. Vărgău , D.M. Iliescu , C. Dina , C. Ionescu , P. Bordei 
Published: May 2014

ABSTRACT
Duplication of the ureters is a common anomaly and is frequently encountered by radiologists. Duplication may be either complete or incomplete and is often accompanied by various complications. Incomplete duplication is most often associated with ureteroureteral reflux or ureteropelvic junction obstruction of the lower pole of the kidney. Complete duplication is most often associated with vesicoureteral reflux, ectopic ureterocele, or ectopic ureteral insertion, all of which are more common in girls than in boys. Vesicoureteral reflux affects the lower pole
Morphological aspects of the pulmonary veins
Authors: S. Ispas , C. Dina , I. Bulbuc , D.M. Iliescu , P. Bordei 
Published: May 2014

ABSTRACT
Our study was performed on 21 cases, of which 12 were plastic casts and 9 were CT reconstruction. We found that, most frequently (68.75% of the cases), the pulmonary veins were formed by two roots, one superior and one inferior. In 28.13% of cases, the pulmonary veins were formed from three roots (superior, middle and inferior) and in only one case the superior right pulmonary vein had five roots. The venous roots confluence to form the corresponding trunk was at a distance of between 0.5-2 cm. The termination of the superior pulmonary veins was on the upper part of the anterior atrial wall, most commonly in its lateral side. The distance between the right pulmonary veins was between 0.4-3 cm. The inferior pulmonary veins ended on the infero-lateral part of the posterior atrial wall. The distance between the left pulmonary veins was 1.2-3.4 cm. Among the variation in number of the pulmonary veins we met: three cases with three right pulmonary veins and one case when the inferior right pulmonary vein joined terminally the inferior left pulmonary vein, forming a single venous trunk. Supplementary pulmonary veins were encountered only on the right; in one case there were two posterior right pulmonary veins (superior and inferior), in the second case were anterior right pulmonary veins (superior and inferior) and in a third case were three veins, superior, middle and inferior