bluuebunny/crossref_metadata_2025 huggingface dataset:
The Structure And Properties Of Mixed Welded Joints Made Of X10NiCrAlTi32-21 And X6CrNiMoTi17-12-2 Steels
Authors: Sieczkowski K. , Adamiec J. , Sawicki G.
Published: November 2015

This paper describes the welding technology applied for mixed joints of tubes made of austenitic steels in the X10NiCrAlTi32-21 and X6CrNiMoTi17-12-2 grades. One made a butt joint and a multi-run joint, with the inert gas welding method and a non-consumable electrode. The mechanical properties were tested in the following scope: static tensile test, bending test from the side of the face and from the side of the root, impact test of the joint and hardness measurements. The tests were supplemented by the assessment of the macrostructure and microstructure of the joint. The performed non-destructive and structural tests did not reveal any welding imperfections, and the mechanical test results confirmed high properties of the welded joint. On this basis, the joint was classified into the “B” quality level according to PN EN ISO 5817. The mechanical and structural test results constitute the basis for qualification of the welding technology according to PN EN ISO 15614.
Pressurized Recuperator For Heat Recovery In Industrial High Temperature Processes
Authors: Gil S. , Góral J. , Horňak P. , Ochman J. , Wiśniewski T.
Published: November 2015

Recuperators and regenerators are important devices for heat recovery systems in technological lines of industrial processes and should have high air preheating temperature, low flow resistance and a long service life. The use of heat recovery systems is particularly important in high-temperature industrial processes (especially in metallurgy) where large amounts of thermal energy are lost to the environment. The article presents the process design for a high efficiency recuperator intended to work at high operating parameters: air pressure up to 1.2 MPa and temperature of heating up to 900°C. The results of thermal and gas-dynamic calculations were based on an algorithm developed for determination of the recuperation process parameters. The proposed technical solution of the recuperator and determined recuperation parameters ensure its operation under maximum temperature conditions.
The Effect Of Mechanical Interactions Between The Casting And The Mold On The Conditions Of Heat Dissipation: A Numerical Model
Authors: Dyja R. , Gawrońska E. , Sczygiol N.
Published: November 2015

We present a description of the effects of thermal interactions, which take into account formation of a shrinkage gap, that affect the level of stresses in a system casting – mold. Calculations were carried out in our own computer program which is an implementation of the finite element method used to solve the equations describing a thermo-elastic-plastic model of material and the heat conduction, including solidification. In the computing algorithm we use our own criteria for mechanical interaction between the casting and mold domains. Our model of mechanical interactions between the casting and the mold allows efficient modeling of stresses occurring in the casting and an impact of development of the shrinkage gap on cooling course.
Numerical And Experimental Study Of Producing Flanges On Hollow Parts By Extrusion With A Movable Sleeve
Authors: Gontarz A. , Winiarski G.
Published: November 2015

The paper presents the numerical and experimental results of a new method for producing flanges on hollow parts. With this new method, the flange is extruded by a movable sleeve. This innovative technique is modelled numerically by the finite element method. The effect of workpiece and finished product geometries on the forming process is investigated and failure modes are identfied. The numerical reults are then verified in experiments. The tests are conducted using a three-slide forging press equipped with a special device. The numerical and experimental results show a good agreement, which proves that the developed method is correct.
Mechanical Properties Of The Ceramic Open-Cell Foams Of Variable Cell Sizes
Authors: Nowak Z. , Nowak M. , Pęcherski R.B. , Potoczek M. , Śliwa R.E.
Published: November 2015

The mechanical properties and numerical model of ceramic alumina open-cell foam, which is produced by the chemical method of gelcasting with different cell sizes (porosities) are presented. Geometric characteristics of real foam samples were estimated from tomographic and scanning electron microscopy images. Using this information, numerical foam model was proposed. A good agreement between the numerical model and the results elaborated from microtomography was obtained. To simulate the deformation processes the finite element program ABAQUS was used. The main goal of this computation was to obtain macroscopic force as a function of applied vertical displacement in compression test.

As a result of numerical simulation of compression test of alumina foam for different values of porosity, the Young modulus and the strength of such foams were estimated.
An Investigation Into The Effect Of Isothermal Annealing On Magnetic Properties In The Alloy: Fe64Co10Y6B20
Authors: Nabiałek M.
Published: November 2015

This work presents the results of investigations into the structural and magnetic properties of the bulk amorphous alloy: Fe64Co10Y6B20. The structure, thermal stability and magnetic properties of the alloy were studied using: X-ray diffractometry, differential scanning calorimetry (DSC), and a vibrating sample magnetometer (VSM), respectively. The investigations were performed on samples of the alloy in both the ‘as-cast’ state, and the state resulting from a process of isothermal annealing at a temperature of 750 K for 30 minutes.

The aim of the conducted studies was to relax the structure and improve the soft magnetic properties of the investigated alloy. The results show that annealing the alloy at a temperature well below its crystallisation temperature leads to an increase in the value of the saturation magnetisation and a decrease in the value of the coercivity. Utilising the ‘approach to the ferromagnetic saturation’ theorem, the nature of structural defects within the investigated material has been established. For both ‘as-cast’ and isothermally-annealed samples, the magnetisation process has been found to be connected with the existence of linear structural defects.
Microstructural Characterization Of Quenched And Plastically Deformed Two-Phase α+β Titanium Alloys
Authors: Motyka M. , Sieniawski J. , Ziaja W. , Mrówka-Nowotnik G.
Published: November 2015

Development of microstructure in two-phase α+β titanium alloys is realized by thermomechanical processing – sequence of heat treatment and plastic working operations. Analysis of achieved results indicates that hot plastic deformation – depending on deformation degree – causes significant elongation of α phase grains. Following heat treatment and plastic deformation processes lead to their fragmentation and spheroidization. Characterization of microstructure morphology changes during thermomechanical processing of quenched Ti-6Al-4V and Ti-6Al-2Mo-2Cr alloys is presented in the paper. The effect of martensitic phase α’(α”) on microstructure development in plastic deformation process was confirmed.
Selective Laser Sintering And Melting Of Pristine Titanium And Titanium Ti6Al4V Alloy Powders And Selection Of Chemical Environment For Etching Of Such Materials
Authors: Dobrzański L.A. , Dobrzańska-Danikiewicz A.D. , Gaweł T.G. , Achtelik-Franczak A.
Published: November 2015

The aim of the investigations described in this article is to present a selective laser sintering and melting technology to fabricate metallic scaffolds made of pristine titanium and titanium Ti6Al4V alloy powders. Titanium scaffolds with different properties and structure were manufactured with this technique using appropriate conditions, notably laser power and laser beam size. The purpose of such elements is to replace the missing pieces of bones, mainly cranial and facial bones in the implantation treatment process. All the samples for the investigations were designed in CAD/CAM (3D MARCARM ENGINEERING AutoFab (Software for Manufacturing Applications) software suitably integrated with an SLS/SLM system. Cube-shaped test samples dimensioned 10×10×10 mm were designed for the investigations using a hexagon-shaped base cell. The so designed 3D models were transferred to the machine software and the actual rapid manufacturing process was commenced. The samples produced according to the laser sintering technology were subjected to chemical processing consisting of etching the scaffolds’ surface in different chemical mediums. Etching was carried out to remove the loosely bound powder from the surface of scaffolds, which might detach from their surface during implantation treatment and travel elsewhere in an organism. The scaffolds created were subjected to micro- and spectroscopic examinations
Comparison Of The MWCNTs-Rh And MWCNTs-Re Carbon-Metal Nanocomposites Obtained In High-Temperature
Authors: Dobrzańska-Danikiewicz A.D. , Łukowiec D. , Cichocki D. , Wolany W.
Published: November 2015

Carbon-metal nanocomposites consisting of multiwalled carbon nanotubes coated with rhodium or rhenium nanoparticles by the high-temperature method were fabricated during the research undertaken. Multiwalled carbon nanotubes fabricated by Catalytic-Chemical Vapour Deposition (CCVD) were used in the investigations. Multiwalled carbon nanotubes functionalisation in acid or in a mixture of acids was applied to deposit rhodium or rhenium nanoparticles onto the surface of carbon nanotubes, and then the material was placed in a solution being a precursor of metallic nanoparticles. The material prepared was next subjected to high-temperature reduction in the atmosphere of argon and/or hydrogen to deposit rhodium or rhenium nanoparticles onto the surface of multiwalled carbon nanotubes. The investigations performed include, respectively: fabrication of a CNT-NPs (Carbon NanoTube-NanoParticles) nanocomposite material; the characterisation of the material produced including examination of the structure and morphology, and the assessment of rhodium and/or rhenium nanoparticles distribution on the surface of carbon nanotubes. Micro- and spectroscopy techniques were employed to characterise the structure of the nanocomposites obtained.
Solute–Solute Interaction In α IRON: The Status QUO
Authors: Numakura H.
Published: November 2015

An overview is presented on the interaction of substitutional solutes with carbon and nitrogen in α iron, which is an important factor in controlling the properties of steels. Starting from a simple model of trapping of the interstitial solute atoms by substitutional solute atoms, the principles of experimental methods for quantitative studies are described, focussing on the Snoek relaxation and solubility measurements, and the knowledge acquired by such experiments is reviewed. An account of recent theoretical approaches to the interaction is also given.
Mechanical Spectroscopy: Some Applications On Structural Changes And Relaxation Dynamics In Soft Matter
Authors: Wu Xuebang , Liu Changsong
Published: November 2015

The general trend in soft matter is to study systems of increasing complexity covering a wide range in time and frequency. Mechanical spectroscopy is a powerful tool for understanding the structure and relaxation dynamics of these materials over a large temperature range and frequency scale. In this work, we collect a few recent applications using low-frequency mechanical spectroscopy for elucidating the structural changes and relaxation dynamics in soft matter, largely based on the author’s group. We illustrate the potential of mechanical spectroscopy with three kinds of soft materials: colloids, polymers and granular systems. Examples include structural changes in colloids, segmental relaxations in amorphous polymers, and resonant dissipation of grain chains in three-dimensional media. The present work shows that mechanical spectroscopy has been applied as a necessary and complementary tool to study the dynamics of such complex systems.
Mechanical Spectroscopy Of Equal-Channel Angular Pressed Fe-Cr Alloys And Tungsten
Authors: Hao Ting , Tang Haiyin , Jiang Weibin , Wang Xianping , Fang Qianfeng
Published: November 2015

Internal friction technique was used to investigate the microstructural stability of equal-channel angular pressed (ECAP) 9Cr1Mo steel (T91), Fe-18wt.%Cr alloy, and pure W. Several non-relaxation internal friction peaks are observed in three ECAP-strained specimens, which are related to the microstructural transition from a severely deformed state to a static recovery state of dislocations, and to recrystallized state. Along with the disappearance of the P1 peak, another relaxation internal friction peak P2 is observed during the second heating run only in Fe-18wt.%Cr alloy, and it does not disappear even during subsequent third heating run. This peak is not observed in T91 steel and W. The P2 peak is likely associated with a process of grain boundary (GB) sliding. Unlike T91, no abundant carbide precipitates distribute on GBs to pin GB and repulse GB sliding, thus, the P2 peak only occurs in Fe-18wt.%Cr alloy. It is concluded that high-temperature internal friction measurements are required to detect the grain boundary peak in pure W.
Surface Modification Of Implants For Bone Surgery
Authors: Marciniak J. , Szewczenko J. , Kajzer W.
Published: November 2015

The study discusses the methods of surface modification methods for AISAI 316 L steel and Ti6Al4V ELI titanium alloy, dedicated to complex design implants used in bone surgery. Results of structural tests have been presented along with those evaluating the physicochemical properties of the formed surface layers. Clinical feasibility of the surface layers has also been evaluated.

The developed surface modification methods improved the resistance to pitting, crevice and stress corrosion and ensured better biocompatibility. Moreover, the layers formed are marked by plasticity. Results of the tests performed show applicability of the evaluated methods of surface modification in complex shape implants for the clinical use.
Micromachining And Pattering In Micro/Nano Scale On Macroscopic Areas
Authors: Marczak J.
Published: November 2015

This paper presents detailed discussion of selected examples of laser technologies for the modification of solid surfaces, including topographic and microstructural changes as well as both these alterations simultaneously. Laser surface micromachining has just entered the new generation of technologies that are used in surface engineering. It will be shown on the examples of applications in bioengineering, on the base of the author’s own research, in modification of materials such as titanium and its alloys, diamond-like layers (DLC) deposited on silicon and polymer substrates.
The Tin Coatings Utilisation As Blood Contact Surface Modification In Implantable Rotary Left Ventricle Assist Device Religaheart Rot
Authors: Kustosz R. , Altyntsev I. , Darlak M. , Wierzchoń T. , Tarnowski M. , Gawlikowski M. , Gonsior M. , Kościelniak-Ziemniak M.
Published: November 2015

Constructions of the mechanical-bearingless centrifugal blood pumps utilize different types of non-contact physical bearings, which allows to balance the forces that have an impact on the pump impeller, stabilizing its position in the pump house without wall contact. The paper presents investigations of the hybrid (passive magnetic bearings and hydrodynamic bearings) suspension system for the centrifugal blood pump. Numerical simulations were used to evaluate the hydrodynamic bearing lifting force and magnetic bearing forces interaction. An important aspect of rotor suspension system design was the nominal gap in hydrodynamic bearing area in order to reduce the blood damage risk in this region. The analyses results confirmed that for a small diameter centrifugal pump, the nominal operating hydrodynamic bearing gap could be established within the range from 0.033 to 0.072 mm.
Biocompatibility Issue Of Tissue Engineered Heart Valves
Authors: Wilczek P.
Published: November 2015

Tissue engineering is a new field of knowledge which creates the possibilities for producing bioactive cardiac prostheses that will characterize by biomechanical and morphological properties similar to native tissue. It is expected that it will be characterized by high durability, which is very important from the social and clinical point of view. The aim of the study was to compare the cytotoxic effect of enzymatic and detergent acellularization methods commonly used for the biological scaffold preparation. It seems that the use of enzymatic methods, allows efficient donor cells removal while maintaining the ability to autologous cell seeding. Heart valves bioprosthesis created using these techniques, may be a good alternative to the currently used prostheses.
Biocompatible Evaluation Of Biomaterials Used In The New Polish Extracorporeal Pulsatile Heart Assist Device ReligaHeart EXT
Authors: Gonsior M. , Kustosz R. , Kościelniak-Ziemniak M. , Wierzchoń T.
Published: November 2015

The innovative extracorporeal heart support device ReligaHeart (RH EXT) has been developed, based on POLVAD ventricular assist device clinical experience, collected in more than 300 patient applications. The innovative surface engineering technologies are applied in ReligaHeart EXT device. The pump is manufactured of new generation, modified surface structure, biocompatible polyurethanes, and equipped with original tilting disc valves, Moll type. The valve ring is made of titanium alloy, TiN+Ti2N+αTi(N) diffusive layer modified, produced with glow discharge at plasma potential, in order to obtain the lowest thrombogenicity. The valve disc is made of polyether ether ketone. The complex in vitro and in vivo biological evaluations were performed, confirming both biomaterials biocompatible properties and device biocompatibility, proved in 30 days animal heart support.
Bio-Inspiered Blood-Contacting Materials Elaborated For The Heart Assist System
Authors: Major R.
Published: November 2015

The paper presents the main achievements of the author on the development of blood contacting materials. The main objective of the work is to elaborate materials dedicated for the heart support systems. Appropriately designed biomaterial surfaces enable fully controlled cellular differentiation, proliferation, and even restoration of the tissue structure on solids. The paper presents two approaches to modify the surface, which can control the life processes of tissue. The first solution considers the topography in the form of cell niches. The main objective of the study is a modified surface of thin films deposited on the polymer substrate constituting the microenvironment for the cells caused by residual stress and optimized stiffness of the surface using the plasma methods. The research hypothesis was the plasma surface modification method generating a controlled contribution of residual stress in the coating affect the surface topography in the form of nano- wrinkles similar to the niches in the tissue environment. Topography and stiffness of the surface coating allows the targeted cellular differentiation. The properly formed surface topography effectively inhibits blood clotting processes. The second solution considers implementation of self-organizing feature of extracellular matrix like coatings and selective cell mobilization. The multiscale analysis and phenomenologic description were performed to experimental research. For this purpose, the deposition method was based on electrostatic interactions in polyelectrolytes. This type of cell-polymer structure imitate the native structures.
Assessment Of Joints Using Friction Stir Welding And Refill Friction Stir Spot Welding Methods
Authors: Lacki P. , Więckowski W. , Wieczorek P.
Published: November 2015

FSW (Friction Stir Welding) and RFSSW (Refill Friction Stir Spot Welding) joints have been increasingly used in industrial practice. They successfully replace fusion-welded, riveted or resistance-welded joints. In the last two decades, dynamic development of this method has stimulated investigations of the fast methods for joint diagnostics. These methods should be non-destructive and easy to be used in technological processes. The methods of assessment of joint quality are expected to detect discontinuities in the structures welded using FSW and FSSW methods. Reliable detection of flaws would substantially extend the range of applications of FSW joints across many sectors of industry, including aviation. The investigations carried out in this paper allowed for characterization of defects present in FSW and RFSSW joints. Causes of these defects were also stressed. An overview of the methodologies for assessment of joint quality was presented. Results of assessment of the quality of joints made of 2024T6 aluminium sheet metal using FSW and RFSSW method were presented.
Growth Law For Peritectic Phases Formation In The Zinc Coating
Authors: Guzik E. , Kopyciński D. , Wołczyński W.
Published: November 2015

Some experiments dealing with the isothermal hot dip galvanizing were carried out. The (Zn) – coating settled on the Armco-iron substrate were examined after arresting the solidification for different periods of time. The measurement of the thickness of each sub-layer in the coating were performed due to the SEM – analysis. The zinc segregation on the cross-section of the studied sub-layers were also determined by the EDS technique. The growth laws are formulated mathematically for each of the observed sub-layer. The mechanism of the sub-layer formation is also analysed due to the observation of the birth/nucleation of the phases in the sub-layers and the effect of flux onto the sub-layers morphology formation. The appearance of each phase is referred to the Fe-Zn diagram for stable equilibrium according to which these phases are the products of the adequate peritectic transformation.
Bimetallic Casting: Ferritic Stainless Steel – Grey Cast Iron
Authors: Wróbel T. , Szajnar J.
Published: November 2015

The paper presents the problem of obtaining a permanent diffusional joint between the working surface layer and the base part in a bimetallic casting. The studied bimetallic casting was obtained as a result of using the founding method of layer coating directly in the cast process. The casting prepared using this method consists of two fundamental parts, i.e., the grey cast iron base and the working surface layer which constitutes of X6Cr 13 high-chromium stainless steels plate. Based on the obtained results it was confirmed that the decisive phenomena that are needed to create a permanent joint between the two components of the bimetallic casting are carbon and heat transport from the high-carbon and hot base material which was poured into the mould in the form of liquid metal to the low-carbon and cold material of the working layer which was placed in the mould cavity in the form of a monolithic insert.
Wire Electrical Discharge Machining Of Feal Intermetallic Sinters Without And With Addition Of Nano-Al2O3 Oxide Ceramic
Authors: Ziętala M. , Durejko T. , Łazińska M.
Published: November 2015

The influence of the parameters of wire electrical discharge machining (WEDM) on the surface layer of FeAl based sinters with and without Al2O3nanoceramic addition has been studied in this paper. The properties of the sinters surface layer were controlled by WEDM parameters, including time of interval (tp) and amplitude of current (IA). The WEDM roughing and finishing treatments were carried out for selected technological parameters of process. The surface texture (ST) of the sinters after WEDM was analyzed by profilometer method. Theoretical parameters describing abrasive wear resistance of investigated sinters were estimated on the basis on the load capacity curve.

On the basis on obtained results it can be stated that there is possibility of shaping geometry of nano-Al2O3doped and undoped FeAl sinters by WEDM. Reduction of the time of interval (tp) and increase of current amplitude (IA) during WEDM deteriorate surface properties. Addition of nano-Al2O3improve the quality of the obtained surface. Applied parameters of WEDM improve theoretical abrasive wear resistance and lubricant maintenance of the nanoceramic doped material in comparison with undoped sinter.
Computer-Aided Design Method of Warp-Knitted Jacquard Spacer Fabrics
Authors: Li Xinxin , Jiang Gaoming , Ma Pibo
Published: November 2015

Based on a further study on knitting and jacquard principles, this paper presents a mathematical design model to make computer-aided design of warp-knitted jacquard spacer fabrics more efficient. The mathematical model with matrix method employs three essential elements of chain notation, threading and Jacquard designing. With this model, the processing to design warp-knitted jacquard spacer fabrics with CAD software is also introduced. In this study, the sports shoes which have separated functional areas according to the feet structure and characteristics of movement are analysed. The results show the different patterns on Jacquard spacer fabrics that are seamlessly stitched with jacquard technics. The computer-aided design method of warp-knitted jacquard spacer fabrics is efficient and simple.
Investigation of Circular Woven Composite Preforms for Composite Pipes
Authors: Amid Hooman , Jeddi Ali Asghar Asgharian , Salehi Manouchehr , Dabiryan Hadi , Pejman Reza
Published: November 2015

The main traditional technique for commercial manufacturing of composite pipes is filament winding in which the winding angle and the discontinuity of the structure (caused by starting and ending points of the winding process) are two important matters of concern. In the present study, circular woven fabric with its orthogonal net-shaped continuous structure was produced from polyester yarns. Fabric was wet with epoxy and hand lay-up was used to manufacture the composite pipes. Composite pipes were subjected to internal hydrostatic pressure and their burst strength was recorded. In addition, tensile strength of flat laminas was assessed in the warp and weft directions. We estimated and analysed the failure strength of composite pipes using Tresca’s failure criterion and Finite Element (FE) modeling. The experimental burst strength was almost 23% more than the FE model and 77% more than the theoretical estimate.
OLB: A Nature Inspired Approach for Load Balancing in Cloud Computing
Authors: Mallikarjuna B. , Venkata Krishna P.
Published: November 2015

Load balancing is treated as one of the important mechanisms for efficient resource allocation in cloud computing. In future there will appear a necessity of fully autonomic distributed systems to address the load balancing issues. With reference to this, we proposed a load balancing mechanism called Osmosis Load Balancing (OLB). OLB works on the principle of osmosis to reschedule the tasks in virtual machines. The solution is based on the Distributed Hash Table (DHT) with a chord overlay mechanism. The Chord overlay is used for managing bio inspired agents and status of the cloud. By simulation analysis, the proposed algorithm has shown better performance in different scenarios, both in heterogeneous and homogeneous clouds.
Clinical utility of the (-2)proPSA and evaluation of the evidence: a systematic review
Authors: Pecoraro Valentina , Roli Laura , Plebani Mario , Trenti Tommaso
Published: November 2015

Background: Diagnostic studies usually provide important information about the analytical and diagnostic performances. We investigated the clinical utility of (-2)proPSA in identifying patients with prostate cancer (PCa).

Methods: We performed electronic searches in five databases as well as a list of reference literature. Studies were included if they evaluated the diagnostic accuracy of (-2)proPSA in men with PSA value ranged from 2.0 to 10 μg/L. We also analyzed data about total PSA (tPSA), %(-2)proPSa, freePSA (fPSA), its percentage (%fPSA) and the prostate health index (phi). The selection of the studies, the screening of the full texts and the data extraction, as well as the assessment of risk of bias using the QUADAS-2 tool were conducted independently by two authors. Grading the quality of the evidence was carried out according to the GRADE method. The random effects model was used for the meta-analyses.

Results: We included 17 studies, including 6912 patients. The pooled sensitivity of (-2)proPSA was 90% and the summary specificity was 13%. The tPSA sensitivity and specificity were 89% and 25%, respectively. Considering (-2)proPSA, 225 men out of 1000 have been identified having PCa true positives (TP). However, 652 persons have been incorrectly identified and undergo biopsy. The majority of studies were judged to carry a moderate risk of bias. Therefore, the overall quality of evidences was deemed to be low.

Conclusions: The (-2)proPSA could be useful to identify men at risk of PCa, but its accuracy still remains uncertain and the level of evidence does not support an improved clinical utility.
Efficient Computation of Highly Oscillatory Integrals by Using QTT Tensor Approximation
Authors: Khoromskij Boris , Veit Alexander
Published: November 2015

We propose a new method for the efficient approximation of a class of
highly oscillatory weighted integrals where the oscillatory function
depends on the frequency parameter

ω
≥
0

${\omega \ge 0}$

, typically varying in a large interval.
Our approach is based, for a fixed but arbitrary oscillator,
on the pre-computation and low-parametric approximation of certain ω-dependent
prototype functions whose evaluation leads in a straightforward way to recover
the target integral.
The difficulty that arises is that these prototype
functions consist of oscillatory integrals which makes them difficult to evaluate.
Furthermore, they have to be approximated typically in large intervals.
Here we use the quantized-tensor train (QTT) approximation method for functional M-vectors
of logarithmic complexity in M in combination with a cross-approximation scheme for TT tensors.
This allows the accurate approximation and efficient storage of these functions in
the wide range of grid and frequency parameters.
Numerical examples illustrate the efficiency of the QTT-based numerical integration
scheme on various examples in one and several spatial dimensions.
Children’s Responsibility for Their Elderly Parents
Authors: Ignatowski Grzegorz
Published: November 2015

Due to physical disabilities and changes in the mental sphere, elderly people cannot always cope with a rapidly growing technology and progressive commercialization. The caring for their elderly parents belongs to the fundamental duties of adult children. One has to prepare for this task throughout the entire life. Including such ideas as care, solicitude and gratitude in the educational process and developing them is helpful in this regard. The first of these ideas has been deepened by Professor Tadeusz Kotarbiński in the analyses of the concept of ‘trustworthy protector’. Ethics of solicitude and gratitude is gaining more and more recognition among many contemporary thinkers. In the middle adulthood, when children take on the responsibility of caring for their elderly parents, these ideas will have an opportunity of a complete externalization and implementation.
Rewards and Punishments Applied in the Family Environment of Early Education Students
Authors: Sikorska Daria
Published: November 2015

It may be presumed that in the upbringing process the most compromising attitude is that supported by the use of both positive and negative reinforcements. In the pedagogical aspect, rewards and punishments are measures consciously applied in educational work, their aim being to trigger change in the behaviour of a young person.

Rewards and penalties applied in the upbringing process allow human behaviours to be enhanced positively or negatively. A reward informs about success: the person then does not have a reason for changing their behaviour. A punishment informs about failure, makes one revise one’s actions and change one’s behaviours, although it may also decrease the power to aim for achievement.

The aim of this article is to present parents’ opinions on the application of rewards and punishments in the family environment of early education students.
Family as a Source of School Failures
Authors: Świderska Mariola
Published: November 2015

School failure can be considered both as a pedagogical failure of teachers as well as a problem of a student in realizing school duties. Kupisiewicz divides the causes of school failure into: socio-economical, biopsychological and didactical. The article highlights the important role of the family as an environment determining the child’s success at school.
Value of Work in the Modern World
Authors: Pikuła Norbert G.
Published: November 2015

The paper focuses on the modern perspective on work and the functioning of individuals on the labour market. Advantages and disadvantages of the current changes in the labour market are discussed in the context of an individual’s life.
Similarities and Differences in Values of Polish Young Women and their parents – the Effect of Value Transmission and Value Change
Authors: Pietras Karolina , Fryt Joanna
Published: November 2015

The similarities and differences in values between generations reflect both the stability and change of socio-cultural trends prevailing at a specific time point as well as developmental processes occurring across the life span. Intergenerational similarities in values may be the effect of value transmission within family or consequence of sharing the same socio-cultural context, since both these processes are difficult to separate. The aims of the study were: 1) to describe similarities and differences in values preferences between young women and their both parents; 2) to determine which values may be transmitted within families. Ninety nine women aged 19-25 and their both parents filled in the Schwartz’ Portrait Value Questionnaire [PVQ- 21, Schwartz 2003]. Comparing to older generation young women showed greater preference for achievement, hedonism, stimulation and universalism as well as less preference for conformity and tradition. To assess value transmission two methods measuring similarity between family members were used. According to correlation analysis values representing conservation (conformity, tradition and security) as well as benevolence and power were transmitted in families between women, while security and two values related to self-enhancement (power and achievement) were transmitted between fathers and daughters. According to comparisons of family dyads with pseudo family dyads only mothers and daughters were found to be similar in their preference for tradition, security and power.
Synthesis of 2-amino-6,7,8,9-tetrahydro-6-phenethyl-3H-pyrimido[4,5-e][1,4]diazepin-4(5H)-one: a model for a potential pyrimido[4,5-e][1,4]diazepine-based folate anti-tumor agent
Authors: Gann Austin W. , Ray Partha S.
Published: November 2015

Reductive cyclization of 2-{N-[(2-amino-4,6-dichloropyrimidin-5-yl)methyl]-N-phenethylamino}acetonitrile (5) with Raney nickel and hydrogen gave the chloropyrimido[4,5-e][1,4]diazepine 3 which could not be converted to 2 via an attempted nucleophilic aromatic substitution with hydroxide. The title compound (2) was prepared, however, by the reductive cyclization of 2-{N-[(2-amino-4-chloro-6-methoxypyrimidin-5-yl)methyl]-N-phenethylamino}acetonitrile (13) followed by treatment with trimethyliodosilane.
Monogenean parasites of Lepomis gibbosus Linnaeus introduced into the River Durance, France
Authors: Havlátová L. , Ondračková M. , Přikrylová I.
Published: November 2015

The pumpkinseed, Lepomis gibbosus Linnaeus (Centrarchidae), was introduced into the Europe from North America in late 19th century. In this study, we examine monogenean parasites of L. gibbosus from the River Durance in France. We found seven parasite species introduced together with the host: Actinocleidus recurvatus, A. oculatus, Onchocleidus similis, O. dispar, O. acer, Cleidodiscus robustus (Ancyrocephalidae) and Gyrodactylus macrochiri (Gyrodactylidae). Early diporpa (Diplozoidae), accidentally attached to the gills, represent a single parasite species acquired within the area of introduction. Three species, O. acer, C. robustus and G. macrochiri, are reported from Europe for the first time.
Research Note. Prevalence, protein analysis and possible preventive measures against zoonotic anisakid larvae isolated from marine Atherina fish
Authors: Samir M. , Amin M. A. , Hassan A. O. , Merwad A. M. , Awadallah M. A. I.
Published: November 2015

Anisakidosis is a zoonotic infection caused by ingestion of raw or undercooked marine fish including Atherina. In some parts of Egypt, the prevalence of anisakid larvae in marine Atherina still, largely, undetermined. Moreover, the currently used procedures are insufficient to avoid human infection. The aim of this study was to identify the prevalence of anisakid larvae in marine Atherina and to test the effect of several treatment procedures on the viability of anisakid larvae. The infection rate of marine Atherina with anisakid larvae was 23.12 %. Anisakid larvae protein revealed molecular weights ranged from 11.5 - 118.5 Kilo Dalton (KDa.). Moreover, freezing at -20 °C for 21 hours (hrs.) as well as vinegar (5 %) treatment for 3 days were the most effective ways to inactivate the larvae. This study states the zoonotic risk of consuming raw or undercooked marine Atherina and highlights the importance of freezing and vinegar treatment in preventing human infection.
Research Note. The first report of three acanthocephalan parasite species isolated from Philippine fishes
Authors: Briones J. C. A. , Papa R. D. S. , Cauyan G. A. , Urabe M.
Published: November 2015

Three acanthocephalan parasites, namely Neoechinorhynchus (Neoechinorhynchus) quinghaiensis, Rhadinorhynchus ganapatti, and Bolbosoma sp. are reported for the first time from Philippine fishes. N. (N.) quinghaiensis (Neoechinorhynchidae) may have been introduced into the country through the importation of carp species from China, where this parasite was first described and is presumed to be naturally occurring. The adult worms of R. ganapatti and the isolated cystacanth of Bolbosoma sp. represent the first record of parasites from both the family Rhadinorhynchidae and Polymorphidae in Philippine waters, respectively. These three new records encompass a third of all listed acanthocephalan parasites that have been reported in Philippine fish species to date, highlighting the need for more biodiversity-focused parasitology research, in light of potentially numerous more undocumented parasite species.
Help-seeking for mental health problems from the patient perspective – A qualitative study / Das Hilfe(auf)suchen bei psychischen Gesundheitsproblemen aus der Betroffenenperspektive – Eine qualitative Studie
Authors: Tola Eva , Metzenthin Petra , Mischke Claudia
Published: November 2015

Background: Early specialised care is important for those with mental health problems to prevent e.g. chronic progression. Targeted professionally initiated intervention to stabilise mental health status is only possible if affected individuals actively seek support. The reasons for inadequate use of qualified services have not been sufficiently investigated from the perspectives of those affected. There is only limited insight into the help-seeking behaviour of those with mental health issues. Aim: This study sheds light on the ‘experience’ of help-seeking to time of first contact with a psychiatric institution. It specifically concentrates on the perspective of those affected and their subjective problems.

Method: Using a qualitative-inductive design, patients at a crisis centre were retrospectively interviewed using a guideline-supported approach. Interview results were analysed using Saldaña (2013) opening coding (two circles).

Results: The patients’ experience can be categorised as ‘real’ problems as the cause, exacerbated mental health problems and utilising mental health services. Help-seeking is determined by the need to manage causal, ‘real’ (everyday, social) problems. Many mental health problem have long not been recognised as such, and thus help-seeking is initially focussed on ‘real’ problems. At all levels of help-seeking, from recognition of a mental health Problem to overcoming barriers preventing use of specialised help, affected persons require the support of third parties.

Conclusions: The results indicate the need for a patient-orientated transformation of mental health primary care to provide for more easily accessible services that take into account the everyday and social problems of those with related problems.
Integrating a Career Planning and Development Program into the Baccalaureate Nursing Curriculum. Part II. Outcomes for New Graduate Nurses 12 Months Post-Graduation
Authors: Waddell Janice , Spalding Karen , Navarro Justine , Jancar Sonya , Canizares Genevieve
Published: November 2015

New graduate nurses’ (NGNs) transition into the nursing workforce is characterized as stressful and challenging. Consequently, a high percentage of them leave their first place of employment or the profession entirely within one year of graduation. Nursing literature describes this complicated shift from student to registered nurse, however, limited attention has focused on strategies that could be implemented during students’ academic programs to prepare them for this difficult transition period. Therefore, a longitudinal intervention study was conducted to examine the influence of a career planning and development (CPD) program on the development of career resilience in baccalaureate nursing students and at 12 months post-graduation (NGN). The findings support including structured and progressive curriculum-based CPD opportunities in academic programs, not only for the positive outcomes that accrue to students, but also because of the benefits they extend to NGNs as they make the transition to their first professional nursing role.
Spatiotemporal Changes in Atmospheric Deposition Rates Across The Czech Republic Estimated in The Selected Biomonitoring Campaigns. Examples of Results Available For Landscape Ecology and Land Use Planning
Authors: Suchara Ivan , Sucharová Julie , Holá Marie
Published: November 2015

Several large-scale and fine-scale biomonitoring surveys were carried out in the Czech Republic to estimate current and long-term accumulated atmospheric deposition rates using moss, spruce bark and forest floor humus as bioindicators since the end of 1980s. The results of the bioindicator analyses significantly correlated with available figures of deposition rates detected at the EMEP or Czech national measurement stations.

The moss monitoring programmes revealed position of about 7 hot spots of high deposition loads of about 35-40 elements and indicated spatiotemporal decrease in the element deposition rates caused by restructuralization of industry, desulphurization of coal power plants and ceased distribution of leaded petrol. The deposition loads of toxic and risk elements have significantly decreased since the end of 1980s; however, increasing atmospheric deposition rates of reactive nitrogen has been bioindicated recently. The fine-scale moss monitoring campaigns, for example, delimited deposition zones around selected emission sources, revealed changes in deposition rates after introducing new technologies or delimited contaminated area in the surroundings of a chlor-alkali plant after a catastrophic flood episode. Deposition ranges of main pollution sources were mapped depicting the aerial distribution of stable lead isotopic ratios in moss, because the isotopic ratios are highly specific for each pollution source.

Monitoring the spruce bark parameters enabled to recognise the distribution of acid rain, dust and sulphate deposition rates and their spatiotemporal changes across the country between 1987 and 2010. The bark investigations along altitudinal profiles showed diminishing effect of air pollution on spruce bark parameters with increasing elevation. This phenomenon can be explained by a decreasing capacity of reduced tree crowns to trap air pollutants in the mountain environment.

The mapping of element content in forest floor humus revealed position of long-term spots of high accumulation of industrial pollutants and Chernobyl-derived 137Cs in forests. Knowledge of these hot spots is important for health and environmental protection mainly in the areas where most of the former emission sources were cancelled and the current low atmospheric deposition rates may make a false impression of the clean landscape.

The data of the Czech national moss biomonitoring surveys were accepted and stored in the database of UN ECE ICP-Vegetation for checking of air pollution and its possible effects on vegetation in Europe.
Putting Into Circulation or Driving an Unlicensed Motor Vehicle Pursuant to The New Romanian Penal Code
Authors: Zazula Bela
Published: November 2015

The lawgiver of the new Penal Code proposed to charge into offences some deeds that endanger the public safety as social value protected by the penal norms and which, in their turn, include a series of values that might be harmed due to a breach of some rules established for the performance of certain activities, inhere for the social life, as well as those that set out, among others, the traffic safety on public roads.
Procedural Aspects of Cybercrime Investigation
Authors: Dragan Alin Teodorus
Published: November 2015

Romanian legislation has had to adapt to new challenges. Following the ratification by our country of the provisions of the Council of Europe on cybercrime, in addition to substantive law provisions, procedural provisions have been introduced, which are intended to regulate the activity of criminal investigation bodies in investigating cybercrime offences.
The "Problem" of Aspects of Teaching and Learning / Teaching - Learning in European Union Law
Authors: Nedelcu-Ienei Anda Veronica
Published: November 2015

The paper addresses an important problem and the frequency of teaching and learning/teaching-learning in higher education/university student, generated by the incapacity to himself selectively information conveyed through alternative sources.

The theoretical approach of the course in European Union law from the dual perspective of the studies about the EU (from the perspective of Community law/EU of the European economy as well as from the perspective of the European administration, international relations and historical and cultural studies or interdisciplinary) require students to knowledge/concept related institutions entrusted with the exercise of prerogative powers in a State, who they studied/problems in previous years in fact, it is precisely this times is done or shall not become unwieldy.

And last but not least not be overlooked aspects of individual differences that influence the process of learning: the way of thinking and the preferences of both factors (teachers/students) on lifelong learning, which influences the effectiveness of the approaches in the process of instruction (or multiple types of intelligence entitled, the use of information and others).
The Counter-Terrorist System Of Romania
Authors: Bąk Tomasz
Published: November 2015

This article presents the counter-terrorist system adopted in Romania. The problem of terrorism is one of the challenges within security issues which the European Union is facing. Only lasting, strong cooperation may lead to combating international terrorism, and one of the countries which attempt to do that is Romania. For such actions to be successful, suitable legal solutions have been implemented and adequate structures and units established with the purpose of fighting terrorism. An enormous role belongs moreover to international cooperation and maintaining good relations between various states within terrorism prevention. The Author focuses in particular on the forms and methods of combating terrorism on various planes.