bluuebunny/crossref_metadata_2025 huggingface dataset:
Les femmes de trois villages de l'Artois : travail et vécu quotidien (1919-1939)
Authors: Allart Marie-Christine
Published: June 2015

In drie kleine dorpen, Thélus, Neuville-Saint-Vaast en Maroeuil, behoren de vrouwen in de période tussen de twee wereldoorlogen nog tot de traditionele rurale gemeenschap, al kan men hier en daar al tekenen van vernieuwing bespeuren. De vrouwen leven maar om te werken en worden gewoonlijk van de vrije tijdsaktiviteiten uitgesloten, gehoorzaamheid aan de echt- genoot is gewoon. De bevrijding door het werk, het symbool van de vrouwelijke onafhankelijk- heid, blijft hier onbekena terwijl het andere ideaal van de vrouw aan de haard vaak onbereikbaar is. De twee voornaamste bezigheden zijn het werk op het land en het bewerken van stoffen, als beroep dan daarnaast is er het thuiswerk : de familie voeden, kleden, het linnen en het huis onderhouden.
Images de la femme dans la presse régionale (1945-1975)
Authors: Pillet Isabelle
Published: June 2015

If the woman finds it hard to live through the economical tensions brought by the social organisation, she also strongly feels the ideas and expectations which society weaves around her under the shape of advertisements, feminist films or special broadcasts for housewives... Now the attempt at seizing the mental images representative of women stresses the particularity of the local newspapers as both mirrors and memories. And indeed, in accordance with a sum of readers free to renew their ideological contact, the teams of reporters reveal, article after article, qualificatives, thinking habits and commitments characteristic of their representation of women. Moreover, papers like La Voix du Nord or Liberté enable us to go far back in time ; and the study of the years 1945-46, rich in discussions about the right of vote granted to women brings life into the evolution of the representations of "the woman" exposed through out the world in 1975.
Le trésor du chemin des vingt-huit à Dourges (Pas-de-Calais)
Authors: Gricourt Jean
Published: June 2015

Treasure found in 1914-1918 and kept unrevealed. On 450 to 500 coins, 46 could be examined : they are antoniniani ranging from Trebonius Gallus to Postumus (25 items for this latter only) probably buried around 267-268.
Numismatique et épigraphie : sur les faux du nord de la France
Authors: Delmaire Roland
Published: June 2015

Een valse insriptie geciteerd door het CIL te Steenvoorde is in feite een fout van bepaalde geleerden uit de XVIIIde eeuw die een zin over de munten van Postumus gevonden te Bollezeele slecht interpreteerden. Analyse van een schat die men in Bavai gevonden heeft en die een aantal médaillons bevatte die vais zijn en waarvan er voorbeelden bestaan in de epigrafie. Studie van een zogenaamde schat gevonden in Bapaume die in feite een dubbel is van een schat aangetroffen in Mespelare in Vlaanderen. De transpositie, van de vindplaats gaat terug op een fout die men in de XVIIIde eeuw begaan heeft en die overgenomen werd door een aantal historici van Bapaume.
Changements dans la topographie de l'habitat slave au moyen âge
Authors: Dunin-Wasowicz Teresa
Published: June 2015

Du Xe au XIIIe siècle les habitats slaves de la plaine d'Europe centrale entre Varsovie et Berlin se déplacent depuis le bas des vallées pluviales vers des terrasses plus hautes. Ce déplacement est dû aux modifications de l'environnement par l'homme, aux surpeuplement de certains sites et à la remontée des nappes phréatiques. Deux phases apparaissent importantes l'une de 800 à 1000, l'autre de 1100 à 1400.
Les problèmes linguistiques de Montreuil-sur-Mer : les origines de la ville à travers ses noms successifs
Authors: Le Bourdellès Hubert
Published: June 2015

De opeenvolgende benamingen van Montreuil zijn een spiegel van zijn geschiedenis. Het valt op dat er geen Gallo-Romeinse naam is. De term «Montreuil» komt van een klein klooster «monasteriolum», dat in de IXde eeuw gebouwd werd op de hoogte waarop even later ook het cas- trum van Helgaud een plaats vond. Het is niet uitgesloten dat de stad een tijd lang de naam «Montreuil-en-Wis» heeft gedragen, ter herinnering van de Karolingische haven, Wic-Quentowic. In de naam «Montreuil-sur-Mer», die men van de Xllde eeuw af aantreft, vindt men de geschiedenis van de stad terug die ook zeehaven was in de middeleeuwen, erfgename van Quentovic.
Solange et Jean-Michel Bastien, L'église de Lallaing (Nord)
Authors: Barbieux J.
Published: June 2015

In 1975, works effected inside the church choir were the occasion to proceed to archaeological soundings, and their results, completed by the study of other documents, permitted to sketch the major stages of the evolution of the building. The primitive church whose flat-cheveted choir was dug out, knows in the Middle Ages and in modern times an exceptional destiny connected with the lise of the local squires, the Lalaings, who make of it their sepulchral church (Church nf the «Albums de Croy» around 1600). The 18th century church looks already more unpretentious (the country has meanwhile been sold). The present churc has kept testimonies of its successive remodel- lings, and thus gives the impression of a continuity whereas one should have concluded to definite ruptures (thorough reconstructions) on the light of the iconographie documents alone.
L'église de Maignelay (Oise). Témoin du mécénat de Louis d'Halluin en Picardie
Authors: Ansar Patrick
Published: June 2015

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De kerk van Maignelay (Oise) die men kan dateren tussen 1503 en 1514 is een belangrijk maar weining bekend voorbeeld van de artistieke aktiviteit in Picardie op het einde van de midde- leeuwen. Hij werd gebouwd door een edelman van Vlaamse oorsprong, opgevoed aan het hof van Boergondië, Louis d'Halluin, en past helemaal in de religieuze architectuur van die tijd. Deze kerk vertoont drie voor Picardie bijna geheel oorspronkelijke kenmerken : een westelijke ingang, twee bovenelkaar geplaatste koorkapellen en een rijke sculpturale versiering van de gewelven. Iconogra- fisch blijft dit laatste gotisch al treft men er een vroege Italianiserende invloed aan, in de details, die waarschijnlijk voortspruit uit de reis die de bouwheer in Italie maakte, toen hij Charles VIII verge- zelde.
Chronique numismatique
Authors: Delmaire Roland
Published: June 2015

Een Gallische stater te Cambrin, een aureus van Hadrianus te Atrecht, twee muntstukken van het late keizerrijk te Bourec, stukken gevonden in de XIXde eeuw in Ablain-St.-Nazaire, Lié- vin, Lens, Harnes ; de schat van Aubigny-au-Bac van 1885 die nog niet gepubliceerd is (vooral Pos- tumus), een fragment van een schat gevonden bij Lesdain.
Scalable, high performance, enzymatic cathodes based on nanoimprint lithography
Authors: Pankratov Dmitry , Sundberg Richard , Sotres Javier , Suyatin Dmitry B , Maximov Ivan , Shleev Sergey , Montelius Lars
Published: June 2015

Here we detail high performance, enzymatic electrodes for oxygen bio-electroreduction, which can be easily and reproducibly fabricated with industry-scale throughput. Planar and nanostructured electrodes were built on biocompatible, flexible polymer sheets, while nanoimprint lithography was used for electrode nanostructuring. To the best of our knowledge, this is one of the first reports concerning the usage of nanoimprint lithography for amperometric bioelectronic devices. The enzyme (Myrothecium verrucaria bilirubin oxidase) was immobilised on planar (control) and artificially nanostructured, gold electrodes by direct physical adsorption. The detailed electrochemical investigation of bioelectrodes was performed and the following parameters were obtained: open circuit voltage of approximately 0.75 V, and maximum bio-electrocatalytic current densities of 18 µA/cm2 and 58 µA/cm2 in air-saturated buffers versus 48 µA/cm2 and 186 µA/cm2 in oxygen-saturated buffers for planar and nanostructured electrodes, respectively. The half-deactivation times of planar and nanostructured biocathodes were measured to be 2 h and 14 h, respectively. The comparison of standard heterogeneous and bio-electrocatalytic rate constants showed that the improved bio-electrocatalytic performance of the nanostructured biocathodes compared to planar biodevices is due to the increased surface area of the nanostructured electrodes, whereas their improved operational stability is attributed to stabilisation of the enzyme inside nanocavities.
Policy Implications of a Literature Review of Cardiovascular Disease in Uninsured Immigrant Older Adults
Authors: Sadarangani Tina R.
Published: June 2015

The number of older adults emigrating to the United States is expected to quadruple by 2050. The health of immigrant older adults is complicated by the limited options for low-cost health insurance available to this population. Welfare reform has limited new immigrants’ access to public assistance programs, such as Medicaid; and low-cost private insurance options rarely exist for individuals older than 65, even with the passage of the Patient Protection and Affordable Care Act (PPACA). Uninsured immigrant older adults have been found to forgo preventive care due to cost and are among the leading users of emergency departments for preventable complications of chronic disease, primarily cardiovascular disease (CVD). A review of the literature found that insurance coverage has a significant impact on CVD risk among immigrant older adults. The current article discusses the implications of welfare reform initiatives and the shortcomings of the PPACA in addressing the health care needs of immigrant older adults. [
Journal of Gerontological Nursing, 41
(6), 14–20.]
Acceptabilité et mise en œuvre des politiques de relocalisation face aux risques littoraux : perspectives issues d’une recherche en partenariat
Authors: André Camille , Sauboua Paul , Rey-Valette Hélène , Schauner Gaëlle
Published: June 2015

Cet article étudie les conditions de faisabilité des mesures de relocalisation prônées dans le cadre de l’adaptation à la montée du niveau de la mer liée au changement climatique. Pour ce faire, les auteurs explorent des modalités de mise en œuvre et de financement innovantes, de façon à offrir des pistes pour aider les collectivités à élaborer des protocoles d’action. En premier lieu, il s’agit de définir des principes qui permettent d’appréhender ces relocalisations comme des projets intégrés de recomposition territoriale. Cette approche permet de décomposer ces opérations en différents modules qui devront être coordonnés et planifiés. Les auteurs explorent ensuite des mécanismes d’indemnisation et d’occupation temporaire de façon à renforcer l’acceptabilité et à réduire les besoins de financement public. Enfin, une simulation des besoins de financement est proposée pour deux archétypes représentatifs d’un quartier ou de l’ensemble d’une commune littorale, assortie d’une réflexion sur les besoins d’évolutions règlementaires pour lever les contraintes institutionnelles actuellement rencontrées dans le cas de la France.
Quel développement durable pour le delta du Danube? Enquête à Pardina
Authors: Niculescu Simona , Pécaud Dominique , Michel-Guillou Élisabeth , Soare Paul , David Laurence
Published: June 2015

Recenser et prendre en compte les spécificités locales, identifier collectivement les enjeux, emboîter les différentes échelles d'action, tels sont les principaux défis pour répondre aux enjeux du développement durable concernant le delta du Danube, en général, et la commune de Pardina, en particulier. Le delta présente un intérêt environnemental, économique et social évident. Il présente une forte biodiversité, sa richesse biologique s'expliquant par l'importance des zones humides et la diversité des habitats d’oiseaux. Le statut actuel du delta comme réserve de la Biosphère devrait permettre la reconstitution progressive de ces richesses malmenées par les politiques passées centrées sur l'accroissement de la productivité des biens agricoles. Mais le contexte économique actuel met la population locale en difficulté. Cette dernière est confrontée à l’isolement, au retard en matière de modernisation ou de transformation des infrastructures existantes, à un chômage en hausse et à un vieillissement généralisé. L’un des objectifs en termes de développement durable pour cette zone consiste à définir une stratégie globale capable de concilier respect de la biodiversité, prospérité économique et vie décente.
Research Regarding the Load WIG Welding of Active Areas for Asphalt Uncovering Milling Cutter Teeth
Authors: Iovanas Razvan Florin , Iovanas Daniela Maria
Published: June 2015

Research refer to the creation of intelligent systems with self-protection for run-out and rotation self-blocking teeth for asphalt uncovering milling cutter, by load WIG welding of active bevels procedure, with thick and hard layers of carbides, which offer high resistance to severe conditions from the exploitation. We have used a tubular rod type adding material specially created for this case. A lot of loaded teeth in the active areas were created by means of this procedure and they were tested in exploitation on an uncovering milling cutter. The obtained results have proved a significant increase in the functioning time.
316L Metal Powder Compaction Simulation with Assisted Friction
Authors: Sas-Boca Ioana Monica , Frunza Dan , Iluţiu-Varvara Dana Adriana
Published: June 2015

Friction plays a major role in powder compaction and there is a large energy loss in trying to overcome its negative effects. It is therefore rational to use the friction to assist metal flows and reducing the amount of lubricant and its negative effects. The appropriate use of friction in practice involves the solving of complex engineering problems. The paper approach will mainly focus upon issues concerning the conversion of the friction force and simulation in PM compaction processes and improving density gradient in the powder compaction process of AISI 316L austenitic powder.
Quantitative and Qualitative Methods in the Study of some Dynamic Systems
Authors: Bălă Dumitru
Published: June 2015

In this paper we present several methods for the study of stability of dynamical systems. We analyze the stability of a hammer modeled by the free vibrator that collides with a sprung elastic mass taking into consideration the viscous damping too.
Experimental Stand Controlled by Web Interface for Data Acquisition in Punching Process
Authors: Uțuleanu Stelian , Vlase Aurelian , Sindilă Gheorghe , Căpățână Nicolae
Published: June 2015

Virtual Instrumentation" is the realization of instrumentation, analysis and data processing using a computer. The control of experiments through the web interface provides greater flexibility to the measurement, greater control over results and not least a better processing of the obtained data. There has been made virtual laboratories controlled by web interface for various specialties, but have not been made for the punching process.
A Review Regarding the Biogas Production through Anaerobic Digestion of Organic Waste
Authors: Voicu Gheorghe , Dincă Mirela , Paraschiv Gigel , Moiceanu Georgiana
Published: June 2015

Globally, the pollution prevention goals transposed in the Kyoto Protocol, require sustainable solutions regarding the management of organic waste from both agricultural, and livestock farms. Biogas production by anaerobic digestion of organic wastes and residues provides a range of socio-economic benefits, but also environmental, thus contributing to monitoring the complex relationship between human health and the environment. The European Union policies regarding renewable energy systems (Europe 2020 Strategy – A strategy for smart, sustainable and inclusive growth and Green Paper „Towards a European strategy for the security of energy supply“), highlights that the production of renewable energy, reducing greenhouse gas emissions and a sustainable waste management, are essential for sustainable development in the future. In this context, this paper will review aspects of biogas production by anaerobic digestion of organic waste, stages of anaerobic digestion process and concepts of biogas plants used in European countries.
Environmental Strategies in Areas Affected by Ash from Large Combustion Plants
Authors: Cotiga Constantin , Ghermec Olimpia , Bucse Ionela Gabriela , Țugui Dumitru
Published: June 2015

The great extent of industrialization in the world can have serious repercussions on the environment. Damage to agricultural ecosystems is produced not only by the industrial centers or mining, but also by the ash resulting from burning coal in combustion plants. Restoration in the agricultural exploitation of lands degraded by industry and the areas under deposits of polluting fly ash is a key objective that lies in the attention of scientists for better use of the entire land fund. The experimental results obtained in this sense are particularly promising. Most of the research went on using the ash dumps by biological fixation with vegetation and by binding and using a specific agricultural technique. Therefore, recultivation and fixation of fly ash dumps targets to protect the environment and reduce air pollution with dust from the ashes, i.e. to harness economic areas occupied by dumps.
Research on the Reduction of Greenhouse Gases Emissions to the Enrichment in Carbon of the Iron Powders
Authors: Ghermec Christian , Ciobanu Mariana , Bucse Ionela Gabriela
Published: June 2015

The steels elaborated through proceedings that are specific to powder metallurgy have as raw material the iron powder which is enriched in carbon through various proceedings: carburizing in a methane-bearing atmosphere or in a liquefied petroleum gas (LPG)-bearing atmosphere, with the addition of synthetic cementite. In order to be developed as environment friendly technologies, there are made researches in order to reduce GHG emissions.
An Estimate of Thermo-Physical Changes in Hybrid Basalt/Glass Fibres Reinforced Polymer Composites
Authors: Motoc Luca Dana , Bedő Tibor
Published: June 2015

The paper aims to provide an insight into the thermo-physical changes of in-situ tailored hybrid polymer based composite materials based on two different synthetic reinforcements with the aim of sizing both architecture stacking sequences and reinforcement type’s influence on their effective linear coefficient of thermal dilatation (CTE). The samples were subjected to a step ramp temperature increase up to 250 °C, followed by their CTE variation monitoring and assessment. Data processing and comparison further contribute to expand knowledge and appropriate personal database aiming material design, manufacturing error minimization and cost reduction.
Comparative Economical Analysis Regarding the Technologies for the Processing of the Support Plates
Authors: Ciupitu Ion , Stanculeanu Florin
Published: June 2015

Fabrication of the support plates can be done using several technologies, but an important aspect of the launching of the product on the free market is the final cost of the product. This paper aims to realize a comparative study regarding the costs of the manufacturing of the support plates. Calculation costs for few technologies as laser processing, plasma cutting and punching will be presented in order to establish the optimal cost for product. Discussions related to the economical efficiency of the technologies which can be used during the process have been performed.
Application of the FMEA Concept to Medical Robotic System
Authors: Dumitru Violeta , Cherciu Mirela
Published: June 2015

This paper examines the potential risks for the design and manufacture products for medical robotics using FMEA method. So we researched all foreseeable potential defects and their causes and effects for a robotic arm. The product is decomposed into components / functions and researched on the requirements for construction, namely the preservation of these requirements during production. Through a qualitative assessment of the effect of a defect, the probability of occurrence and probability of detection were discovered risks and set appropriate corrective measures. Thus FMEA is an effective method of preventive quality assurance.
Effect of Process Control Agents on the FeSiB Powder Amorphisation by Wet Mechanical Alloying
Authors: Neamţu Bogdan Viorel , Marinca Traian Florin , Chicinaş Horea Florin , Chicinaş Ionel , Isnard Olivier
Published: June 2015

Result of research concerning the influence of milling conditions on the amorphisation of the Fe75Si20B5 (at.%) alloy is presented. Amorphous powder of Fe75Si20B5 (at.%) was prepared by dry and wet mechanical alloying (MA) route starting from a mixture of Fe, Si and B elemental powders. The mixture was wet/dry milled up to 50 hours. Benzene, oleic acid and ethanol were used as process control agents (PCA) in order to investigate the influence of their chemical composition on the powder amorphisation. The evolution of the powder crystalline structure, thermal stability and magnetic properties were investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetry (TG) as well as magnetic measurements versus temperature and field. It is proved that the chemical composition of the PCA (especially the carbon content) plays an important role in the amorphisation process induced by wet MA.
Substrate Influence on the Mechanical and Tribological Characteristics of Gold Thin Films for MEMS Applications
Authors: Merie Violeta , Pustan Marius , Bîrleanu Corina , Negrea Gavril , Belcin Ovidiu
Published: June 2015

The development of micro-and nanoelectromechanical systems (MEMS/NEMS) makes use of different thin films such as aluminum, gold, silicon, silver, titanium nitride, silicon carbide etc. This study is a research concerning the influence of substrate nature on the tribological and mechanical characteristics of gold thin films elaborated by thermal evaporation method, for space applications. Three different substrates were employed, namely: C45 steel, plastic (polycarbonate) and glass. Atomic force microscopy investigations were performed in order to characterize the obtained thin films at nanoscale. The nanohardness, Young’s modulus, roughness and the friction force are some characteristics that were determined. A significant influence of substrate nature on both mechanical and tribological properties of researched gold thin films was marked out. Regarding the topography, the smallest roughness was determined on the gold thin films deposited on glass substrate.
The Influence of Milling Conditions on the Ni3Fe Alloyed Powder
Authors: Prică Călin Virgiliu , Stanciu Cristina Daniela , Popa Florin , Chicinaş Ionel
Published: June 2015

The mechanosynthesis of Ni3Fe intermetallic compound was carried out in a planetary mill. The effects of milling parameters such as balls diameters and ball milling speed defined by the vials rotation speed (ω) and the disk rotation speed (Ω), on morphology, microstructure and particle sizes of Ni3Fe powder were studied. It was found that the impact frequency represented by the number of balls from vials is an important parameter a milling process. The smaller grain sizes and particle was obtained when milling process was performed in high frequency rate of impacts together with high balls velocity, meaning high energy conditions.
Voids and Microstructure Evolution in Aluminium Sheets during High Deformation
Authors: Popa Florin , Chicinaş Ionel , Banabic Dorel
Published: June 2015

The aim of the study is to identify the microstructure and voids evolution during the aluminium AA6016-T4 sheet deformation up to 93 % in order to perform deformation simulation for future applications. The deformed samples were cut in the rolling direction and to an angle of 45 and respectively 90 degrees to the rolling direction. The low deformed sample exhibit elliptic voids that are flattening out and for high deformed samples a new generation of rounded voids are generated. The microstructure evolution during cold work was studied by scanning electron microscopy and the distortion of the grain is discussed. The grain size evolution and the shape of grains related to the forming degree is analyzed.
Research on the Treatments at Sub-Zero Temperatures of the Sintered Steels and Hardened in Oil
Authors: Dubovan Sandu , Popescu Traian , Dubovan Lidia
Published: June 2015

The treatments of the hardened parts at low temperatures have like main goal the reducing of the amount of retained austenite through its transformation to martensite under the action of the strong contractions which occur in cryogenic environments. In the case of sintered steels such researches were achieved on a small scale. The paper presents results of research regarding the cooling in medium of dry ice and respectively of liquid nitrogen, for the three groups of sintered steels with structural carbon content of 0.54%, 0.75% and 0.92% sintered at 1150°C for 60 min and oil quenched.
The Analysis of Microstructure and the Properties of the Metallic-Matrix Composite on the Basis of the Copper and Aluminum Oxide
Authors: Ivashutenko Aleksander S. , Martyushev Nikita V. , Vodopyanov E.M. , Naiden Eugene P.
Published: June 2015

The article is devoted to the analysis of the possibilities to obtain gradient materials by the method of spark plasma sintering. Pure copper powders consisting of particles with the average particle size 100 microns and the nanodispersed powder of aluminum oxide were used in this study. Two powder compositions - pure copper powder and a mixture of copper powder and aluminum oxide powder were sintered:. As a result of the sintering process a sample with a double-area structure has been formed with a well-defined boundary between these areas. After sintering the copper powder porosity remained at the initial level. But having been mixed and sintered, the aluminum oxide powder particles agglomerated up to the average particle size of 80 – 100 microns.
Cutting Forces Calculation at Diamond Grinding of Brittle Materials
Authors: Shavva M.A. , Grubiy S.V.
Published: June 2015

A method of calculation of cutting forces at diamond grinding of brittle materials is proposed in article. The cutting forces: normal, tangential and fracture, acting to single grain are calculated. Total grinding forces are defined by average number of grain in contact zone. Calculating values of forces are compared with result of experimental approximation of measuring force at grinding of glass-ceramic workpiece. Grinding forces increase with increasing of diamond grains wear and can be indicative of grinding wheel blunting.
Numerical Simulation for Deformation of Polymer Samples Using the Split Hopkinson Pressure Bar Technique
Authors: Zelepugin Sergey A. , Yuryeva Elena V.
Published: June 2015

Results of numerical simulation for deformation of polymer samples using the split Hopkinson pressure bar technique are presented. Computations have been carried out by the finite element method in axisymmetrical statement within the framework of the elastic-plastic medium model. The received numerical results are compared with experimental data. Good quantitative agreement between the numerical results and experimental data on the pulse amplitude was shown.
Analysis of Results of Computer Simulation of the Casting Process
Authors: Smelov V.G. , Vdovin R.A. , Golanov S.P.
Published: June 2015

In today's competitive world the main direction of improvement of any production is the modernization of known technological processes and creation of new ones. A huge role in improving the process of manufacturing parts is played by computer and innovative technologies that allow to adjust technology to create the best quality castings at the lowest cost. All of this ultimately leads to saving materials, energy, labor time, protects equipment, and in return we get a lot of unique information about the process.
Preparation of Copper Electroerosion Nanopowders from Waste of Aquatic Medium and its Validation by Physicochemical Methods
Authors: Ageev E.V. , Avilova I.A. , Horyakova N.M.
Published: June 2015

The article is devoted to the modes of getting copper powder materials by the method of electroerosion dispersion from waste of an electrotechnical copper wire of an aquatic environment. The results of determination of an average size of powder particles, forms and morphology of copper powder particles and the chemical composition of a powder.
Burnishing Tool Face Optical Control Method
Authors: Melnikov P.A. , Bobrovskij I.N. , Grigoriev S.N. , Bobrovskij N.M.
Published: June 2015

Commonly used organoleptic methods of evaluating surface deterioration do not guarantee manufacturing quality control required in mass production. It is necessary to control efficiently the machining tool status based on planned replacements and regular surface analysis. An algorithm and software for quick evaluation of burnishing tool wear has been developed.
Study of Wind Velocity Impact upon the Quality of Shielding and upon the Thermal Processes under MAG Welding
Authors: Chinakhov Dmitry A. , Vorobyev A.V. , Grigorieva E.G. , Mayorova E.I.
Published: June 2015

In the given paper we consider the impact of wind velocity upon the active shielding gas flow and changes of thermal processes in the MAG welding area. The authors completed numerical simulation of consumable electrode welding under traditional and two-jet gas shielding. It was established that application of two-jet gas shielding for MAG welding increases the hardness of the shielding gas jet and reduces wind-related displacement of thermal fields in the welded item. This ensures more qualitative shielding of the welding area under the windy conditions and uniform heat distribution in the welded item which leads to more homogeneous structure of weld and HAZ metal in comparison to the traditional (one-jet) gas shielding.
The Influence of Melting Technology and Out-of-Furnace Treatment on Composition of Nonmetallic Impurities in Rail Electric Steel
Authors: Gizatulin R.A. , Valuev D.V. , Valueva A.V. , Borovikov Ivan F. , Serikbol A.
Published: June 2015

The paper considers the influence of melting technology and out-of-furnace treatment on the nature and amount of nonmetallic impurities in rail steel. The dependence of the nature of nonmetallic impurities on oxygen concentration in steel is stated. The paper demonstrates the influence of oxygen concentration on rail metal quality.
Methods for Defining the Concentration of Nanostructured Powders in Protective Gas and its Effect on the Microstructure of Deposit Metal
Authors: Kuznetsov M.A. , Barannikova Svetlana A. , Zernin Evgeniy A. , Filonov A.V. , Kartcev D.S.
Published: June 2015

The effect on the deposited metal structure of nanostructured modifiers introduced into the weldpool has been studied. Methods have been developed for determining the concentration of nanostructured powders of tungsten, molybdenum and Al2O3 in protective gas and for defining their optimal concentration. The influence of nanopowders on the structure of deposited metal was examined in consumable electrode arc welding employing the austenitic steel (chemical composition: C – 0,12%, Cr – 18%, Ni – 10%,Ti – 1%) as deposit and 1.2-mm welding wire manufactured from the austenitic steel (chemical composition: C – 0,12%, Cr – 18%, Ni – 9%,Ti – 1%). Addition of nanostructured powders of tungsten, molybdenum and Al2O3 to the weldpool has shown positive effect on the structure of metal in arc welding. It is shown that introducing the powders decreases dendrite size and leads to the formation of a more equilibrium microstructure of the weld.
Increasing Machining Efficiency of Components Made from Hard-Processing Materials
Authors: Artamonov E.V. , Vasilega D.S. , Tveryakov A.M.
Published: June 2015

An analysis of existing methods of determining temperature range of maximum efficiency of hard alloy cutting blades, made of hard tool alloys. Means of determining and establishing of maximum efficiency temperature for hard alloy cutting blades, based on electrical conduction capacity, are stated below. There are also adduced the results of research on four different hard tool alloys from WC-Co hard-metals group.
Mathematical Modeling of the Dynamics of a Two-Mass Gear System with Consideration of Shaft Compliances
Authors: Kurushin Mikhail , Balyakin Valeriy
Published: June 2015

Outlined in this study is an analytical solution of the problem of dynamic excitation of two-mass elastic system by parametric change in the stiffness of teeth during the meshing process with consideration of the compliance of shafts. It is shown that the main source of excitation in a gear system is the central pinion gear. Introduction of an optimal level of multi-pitch in the gear wheel lowers vibrations to minimum.
Physical Modeling of Fluid Flow in the Near-Wellbore Formation Zone on the Basis of Equivalent Materials
Authors: Tailakov O.V. , Utkaev E.A. , Zastrelov D.N. , Sokolov S.V.
Published: June 2015

The paper displays the description of the method to assess coal seam filtration properties in a bottom-hole zone by physical imitation and use of equivalent materials. The evaluation function of permeability and filtration properties change in a bottom-hole zone was specified under conditions of Taldinskiy coal deposit in Kuzbass.
Modeling of the Potential Pit and Force Field to Limit the Motion of the Plasma Particles
Authors: Isaev Yu.N. , Vasileva O.V. , Budko A.A. , Filkov A.I.
Published: June 2015

Paper is devoted to development of the potential barrier model allowing to take into account the interaction between elastic reflection of particles and plasmatron walls. The coaxial magneto-plasma accelerator which has been put into practice is considered.Plasma clot change of speed and weight depending on the coordinate determined by both power characteristics and gas dynamic regularities of hypersonic jet currents in the cylindrical channel was investigated in the accelerator. Potential function and force field type modeling spatial restriction of plasma particles scattering is presented. Dynamics ofcharged particles distribution in electromagnetic field andthe plot of energy balance taking into account the erosion of channel walls have been presented. The developed model of the coaxial magneto-plasma accelerator taking into account an erosion caused by particles distribution on a low-frequency helixhas been shown.Low-frequency helixpath motion is presented as superposition of longitudinal and transverse motions. Differential equations were solved using the fourth-order Runge-Kutta fixed-step method.
Application of Numerical Analysis for Physical and Chemical Combustion Processes in Design of Boiler Units
Authors: Gil Andrey V. , Zavorin Alexander S. , Vorontsova Elena S. , Nizkodubov Gavriil A.
Published: June 2015

It is common knowledge that theoretical approaches do not allow conducting the objective assessment of the reliability and efficiency of the boiler equipment operation, hence, application of numerical approaches is introduced in the paper. There is the urgent need to assess reliability and efficient operation of boilers at the design stage. The analysis of the temperature level, gas dynamics in the combustion chamber of the boiler and the conclusion about the reliability and efficiency of the designed boiler operation are based on the numerical research.
Simulation of Geokhod Movement with Blade Actuator
Authors: Sadovets V.Yu. , Beglyakov V.Yu. , Efremenkov А.B.
Published: June 2015

The article provides main dynamic models formed in geokhod drive, as well as demonstrates their influence on cutting forces of blade actuator.
Geokhod Propel Effort Mathematical Model
Authors: Blaschuk M.Yu. , Dronov A.A. , Miheev D.A.
Published: June 2015

A mathematical model for calculating geokhod propel efforts is developed. Effect of geokhod transmission design on power parameters is considered as well as geokhod advance speed in subsurface. This mathematical model is developed for a two-section geokhod being combined with any type of working body and transmission.
Modeling of Surface Topography after Burnishing Processing
Authors: Bobrovskij N.M. , Melnikov P.A. , Grigoriev S.N. , Bobrovskij I.N.
Published: June 2015

In this paper the way to numerical modeling of surface details after finishing is examined. Feature of the presented model is a sequence in the simulation results: at the beginning surface is modeled after processing by grinding and only then topography is modeled after burnishing. Simulation of a burnishing tool on close to real surface but not on the perfect surface allows considering the effect of technological heredity, which is important for the engineering manufacture.
New Multilayer Corrosion Resistant Materials for Nuclear Power Engineering
Authors: Rozen A.E. , Los` I.S. , Kryukov D.B. , Kozlov G.V. , Rozen A.A.
Published: June 2015

The authors developed a new class of multilayer materials that feature high corrosion resistance in halogenide-containing media. Corrosion resistance is provided by the multilayer structure. The principle of “sacrificial pitting protection” was formulated. The corrosion resistance tests were carried out. Explosive welding technology was introduced for fabrication of multilayer materials. It is suggested to use the multilayer materials as a structural material in construction of reservoirs for liquid radioactive waste.
Determination of Kinematic Parameters of Rotary Transmission Tooled with Hydraulic Cylinders
Authors: Blashchuk M.Yu. , Kust T.S. , Dubrovskiy M.V. , Lizunkov V.G.
Published: June 2015

The paper considers mathematical model developed by the authors which determines the relation of design factors of transmission tooled with hydraulic cylinders to kinematic parameters of output element movement. The paper also provides description of methods to determine pumping unit efficiency for rotary transmission tooled with hydraulic cylinders.
Determining Deviations in Geometry of the Geokhod Shells
Authors: Walter A.V. , Aksenov V.V.
Published: June 2015

The paper discusses the problems on accurate assembly of large-sized cylinder segments by illustrating an example of the geokhod assembly. The mathematical expressions for determining deviations of sector profile from the nominal circle of the shell depending on the radius of sector, its tolerances and the location of supports. The influence of the distance between the supports on the profile deviation is shown. Solutions to minimize the profile deviation are given.
Mathematical Model of Thermal Physics of the Dual-Cycle Cooling System of the Tool for Pieces Nanostructuring Burnishing
Authors: Kuznetsov Viktor P. , Skorobogatov Andrei S. , Gorgots V.G.
Published: June 2015

The article considers the problems of the mathematical modeling of thermal physics of the tool for nanostructuring burnishing. Physical and equivalent heat diagram of the system are developed. On the basis of the equivalent heat transfer diagram, the equivalent circuit and the system of equations of the mathematical model are created. The dependence of the tool indenter tip temperature on cooling system thermal parameters is obtained. The comparison of efficiency of heat removal from the tool indenter when using the developed two-circuit cooling system and the system supplying lubricant cooling liquid through the lathe centre spindle, as well as when applying nanostructuring burnishing without cooling is carried out.
FEM Study of Stress-Strain State of Elements of Harmonic Gear Drive with Hollow Shaft and Intermediate Rollers
Authors: Aksenov V.V. , Timofeev V.Yu. , Dronov A.A.
Published: June 2015

Stress-strain state (SSS) of the separator as one of the main elements of the geokhod harmonic gear drive with rolling elements with hollow shaft is considered. The study was conducted by Finite Element Method (FEM) using SolidWorks Simulation software.
Steel GX120Mn12 Modifying by Ultra Disperse Powders of Refractory Metal Oxides
Authors: Fedoseev S.N.
Published: June 2015

The article provides a consideration of the technology of producing steel GX120Mn12 with high manganese content modified by the special modifier to improve constructional durability of details manufactured. The ultra disperse powder of refractory metal oxides was used to carry out the process of modifying. The samples were produced in the series of cast and tested mechanically. Structural research demonstrated improvement of steel microstructure and that of its mechanical characteristics. It also revealed that the size of austenite grain and nonmetallic inclusions on borders of grains were reduced, and sulphide inclusions were dissolved partially. It has positive impact on work characteristics of this steel.
Algorithm of Route Position's Detecting for Service Transport
Authors: Savrasov F.V. , Meyta R.V.
Published: June 2015

The problem associated with the current location’s determination of the transport unit moving on the pre-planned route is observed. Criteria to be followed when solving this problem are designated. An algorithm allowing the operational monitoring of the movement with the possibility of immediate alert the dispatcher about timetable's adherence is proposed.
The Influence of Power Mode on Ir-Leds Resistance to the Irradiation with Fast Neutrons
Authors: Gradoboev A.V. , Sednev V.V.
Published: June 2015

In this paper we present the results of investigation of the power mode influence on the resistance to fast neutron irradiation of IR-LEDs based on AlGaAs heterostructures. The investigation shows that there are 2 stages of LED emissive power lowering. At the first stage the emissive power decreases due to reorganization of existing defective structure. At the second stage it happens as the result of radiation defects introduction. The rate of defects introduction that influences the emissive power lowering at the first stage in the space charge region of the embedded p-n junction is higher than in the neutral region. The forward current flowing under irradiation results in partial annealing of introduced defects and consequently to resistance growth at the first stage of emissive power lowering. The LED power mode doesn’t contribute essentially to the power lowering at the second stage while observed difference is due to decrease of contribution of the first stage to the whole process of emissive power lowering.
Effects of P-N Junction Built-In Electric Field on Ir-Led Resistance under Gamma Rays Irradiation
Authors: Gradoboev A.V. , Sednev V.V.
Published: June 2015

It is known that the rate of introduction of radiation defects into the Schottky barrier of GaAs and InP diodes depends on the presence of the electric field. The main aim of this research is to study the influence of the built-in electric field at the p-n junction on the resistance of dual AlGaAs heterostructure IR-LEDs under gamma rays irradiation. It is determined that the rate of defects introduction in the presence of built-in electric field or reverse bias at p-n junction is considerably less than the rate of defects introduction into the neutral region without electric field. Then the possible ways of improving the radiation resistance of infrared LEDs are considered.
Preliminary Medical Studies of Electrocardiograph on Nanosensors
Authors: Grigoriev Michael , Turushev Nikita V.
Published: June 2015

Precision methods and devices for the diagnostics of cardiovascular diseases are the one of the main directions of modern technology development in the field of medical instrument making. However, at this stage of development there are a few overall devices that allow for the diagnostics of cardiac muscle with precise accuracy and without internal interference in the body. This study considers the methods for measurement of biopotentials from the surface of the human body by means of electrocardiographic nanosensors. The device developed in the laboratory No. 63 of the Institute of Non-Destructive Testing of the National Research Tomsk Polytechnic University, its parameters and main characteristics are considered. The article focuses on the use of more sensitive equipment for more detailed study of the human body. The results of measurements carried out by means of the developed device are given.
Analysis of Control Problems for 2-D Model of Sound Scattering
Authors: Sosnov Valeriy
Published: June 2015

In this paper control problems for 2-D Helmholtz equation are formulated and investigated. These problems are associated with developing technology of acoustic cloaking. Helmholtz equation is considered in an unbounded domain with the impedance boundary condition. The role of control in control problems under study is played by surface impedance.
Distributive Characteristics of Gas Phase in a Liquid when Bottom Blowing
Authors: Gizatulin R.A. , Valuev D.V. , Valueva A.V. , Borovikov Ivan F. , Serikbol A.
Published: June 2015

This paper provides the results of research into the structure of gas flow in a plume rayed by laser in barbotage zone. The technology of steel out-of-furnace treatment facing a number of challenges necessitates a quite clear view of mechanisms of structure formation and dynamics of liquid and gas phases in an upward gas-liquid flow (in a “plume”) above the gas-feeding nozzle. Gas phase distribution, plume height and cross-section distribution and values of liquid rates determine mainly the dynamics of a melt flow in other out-of-the-plume parts of the bath.
Research Data of Turbine Nozzles of 5-9 Degree Outlet Angles
Authors: Fershalov Andrey Yu. , Fershalov Mikhail Yu. , Fershalov Yuriy Ya. , Sazonov Timofey V. , Ibragimov Damir I.
Published: June 2015

The article presents experimental data of microturbines nozzle boxes research. It describes mathematical models of nozzle outlet gas angle. Research results are analyzed and recommendations on design of nozzle boxes with small constructive outlet gas angle are given.
Numerical Optimization Method of Spacecraft Antenna Retargeting Point Calculations
Authors: Sukhodoev M.S. , Savenko I.I. , Skirnevsky I.P. , Loginov D.A.
Published: June 2015

This article describes a numerical method that determines the position of motorized onboard antennas of the spacecraft using telemetry values. There is results of testing this algorithm in the conclusion of the article.
An Algorithm for Determining the Position and Orientation of 3-D Objects from Images Using Spectral Graph Theory
Authors: Barinov Alexey , Zakharov Aleksey
Published: June 2015

This paper describes an algorithm for computing the position and orientation of 3-D objects by comparing graphs. The graphs are based on feature points of the image. Comparison is performed by a spectral decomposition with obtaining eigenvectors of weighted adjacency matrix of the graph.
Research and Development of Algorithms for Digital Localization of Metal Castings
Authors: Orlov A.A. , Popov D.P.
Published: June 2015

The article shows the relevance of the research and development of algorithms for the identification of metal castings products and describe a method of localization of the workpieces. During the work on this article enterprise level laboratory experiments were carried out.
Monitoring Positioning Accuracy of the Basic Functional Units of Technological Machines
Authors: Mescheryakov Yaroslav E. , Korikov Anatoliy M.
Published: June 2015

Creating of devices for accurate positioning in the space of the basic functional units of technological machines is the actual problem of modern engineering. Ways of the elaboration of the hardware-software complex for this need are described. Results of testing of the proposed complex are reported.
Engineering and Technology Based on Rapid Prototyping
Authors: Saprikin A.A. , Ibragimov E.A. , Babakova E.V.
Published: June 2015

In the process of design and product development, prototyping model is an important step to finalize the product. Rapid Prototyping (RP) is a technology of product synthesis layer deposition material. The method was developed in the early 1980s as a consequence of the enormous growth of automation systems design and technology (CAD / CAM). The prototype of a complex solid model to determine the final appearance of the product, evaluate the assemblability of products, etc.