bluuebunny/crossref_metadata_2025_split huggingface dataset:
Redistribution of corrosion products on steel bar/concrete interfaces in repaired concrete under influenced of aggressive ions
Authors: Malek R A , Hattori A , Hirotaka K 
Published: August 2019

Abstract
The important cases contribute to deterioration of reinforced concrete structure were due to corrosion attack to the reinforcing steel bar. Instead of penetration of aggressive ions for example chlorides, sulphates, acids and others; the selection of materials used for repair should be concern as well. Due to this factor, the understanding on the electrochemical behavior of reinforcing steel bar using different materials for repairing for deteriorated concrete structures will be considered. To understand this phenomenon, the ready-cast specimens mixed with chloride as prepared earlier will be demolished at 301 days of concrete age. Surprisingly, potential measurement of reinforcing steel bars was reoriented to a lower corrosion risk at 301 days of concrete age. The chemical and microstructural factors related to corrosion products were quantitatively identified and correlated it using electrochemical measurements results. For corroding reinforcing steel bar by fully and partially influenced of chloride ions, the corrosion products were mainly contained wuestite, magnetite and lepidocrocite confirmed by XRD patterns. Depending on morphology and multi-elemental content, it shows that chloride ion is approaching the reinforcing steel bar that lead to greater corrosion rate in Reference specimen compared to repaired ones. However, the existence of Ca(OH) in the vicinity between concrete/reinforcing steel bar helps to prevent further corrosion attacks
Optimization of see do il extraction process parameters from Brucea javanica using Design of Experiment (DoE)
Authors: Hasni K , Ilham Z 
Published: August 2019

Abstract
The project was done to improve Soxhlet process for extraction of oil for seeds of Brucea javanica and explore its various applications. The optimization was done by RSM (response surface methodology) using Box Behnken design of experiment (DoE). Properties of the Brucea javanica oil (BJO) was determined using Gas/Mass Spectrometric approach and Fourier Transform Infrared Spectroscopy (FT-IR) analysis. GCMS analysis indicated that important fatty acid are presence in BJO and FTIR suggested the presence of core functional groups in BJO. Quadratic model was used to analyse the results obtained from the optimised experimental design. ANOVA of developed model showed good presentation of model with R
2 value of 0.9078. Similarly, it was discovered that model were significant because their probability values (p-values) were discovered to be less than 0.05. The design of experiment showed a highest yield of 44.89 % at 75°C, 6hour extraction time and hexane 425ml.
Co-based magnetic nanostructured material for high frequency applications
Authors: Codescu M M , Chitanu E , Kappel W , Patroi D , Manta E , Pintea J 
Published: August 2019

Abstract
The RF circuits are difficult to be miniaturized without compromises concerning the technical performances. The inductors and antennas are the major constraints for systems miniaturization, due to the lack of magnetic materials with adequate high frequency properties. The paper presents novel Co-based magnetic nanostructured materials, with improved characteristics which recommend them as potential candidates for transformers and inductors in electronic components: higher level for saturation magnetisation and electric resistivity in comparison with commercial ferrites. The magnetic nanocomposites are prepared by sol-gel route and consist on Co magnetic nanocrystallites, arranged in a crystalline matrix (silicates, for example). The main physical characteristics of the Co/SiO2 nanopowders are developed after appropriate calcination and annealing, being dependent on the SiO2 amount and on the thermal treatment parameters: saturation magnetisation Ms = 81.7 – 130.4 emu/g, coercivity Hc = 21.7 – 26.9 kA/m (273 - 338 Oe) and increased resistivities for the sintered samples, due to the presence of the SiO2 layers.
Recycling of CRT glass in plastering mortars
Authors: Marcus M I , Gy Deak , Dumitru F D , Moncea M A , Panait A M , Maria C 
Published: August 2019

Abstract
Landfilling of end-of-life CRT (cathode ray tube), from computers and other electric or electronic equipment, is an emerging environmental issue which require immediate actions. CRT glass waste represents over 50% of the weight of WEEE (Waste Electrical and Electronic Equipment). However, recycling techniques for CRT glass represent a major problem due to the different compositions of the glass used in CRT manufacturing, in particular due to the presence of lead in various amounts in the panel, funnel and neck tubing. The present paper investigates an alternative method for CRT glass recycling by using it as a substitute for natural fine aggregates in plastering mortars. Research has been carried out for both: analysis of glass chemical stability (assessing the interaction with water to simulate the behaviour of CRT glass in landfills or discarded WEEE in inappropriate areas), and leaching behaviour of the binding mortars with CRT glass as fine aggregate substitute. The results showed that the obtained mortars presented a good chemical stability, the concentration of lead being under the detection limit.
Electrospun nanofibre membranes for textile wastewater treatment
Authors: Manea L R , Bertea A , Bertea A P 
Published: August 2019

Abstract
Among the many uses of electrospun membranes, wastewater treatment is one of the most important, because of their special qualities (large surface area, great porosity, outstanding pore interconnectivity). In the textile industry, wastewater treatment is of utmost importance, especially for recycling purposes. This paper reviews the ways of obtaining these electrospun membranes and the possibilities for their use in the treatment of textile waste water, with a special emphasis on removing the colour of these waters.
3D warp interlocks p-aramid fabrics for composite reinforcement and ballistic vest applications: Effect of yarn density on its formability characteristics
Authors: Abtew M A , Loghin C , Cristian I , Boussu F , Bruniaux P , Chen Y , Wang L 
Published: August 2019

Abstract
The material forming capability becomes one of the most important characteristic of textile performance in the manufacturing of three-dimensional (3D) components to fit a 3D surface in various technical applications. In this study, different forming characteristics of 3D warp interlock fabrics in dry fabric condition were investigated. 3D warp interlock architecture with different areal density from same para-aramid yarn with a linear density of 168dtex were systematically designed and produced on automatic dobby loom with standard atmospheric conditions. The approach utilizes a low speed forming process with a predefined hemispherical shape of punch for the analysis of different forming behaviour of the fabrics specimen. The same blank-holder pressure was chosen for all the samples for better comparisons. Among several forming properties, some important characteristics have been observed, measured and analysed for a better understanding of the material forming behaviour of the different samples specimen. The research results with independent warp and weft yarn densities show a significant impact on the forming behaviours 3D warp interlock fabric. Moreover, the result of the investigation also will give a better understanding on different forming behaviours of 3D warp interlock fabric with various densities while applying in different textile application including women soft body armour.
Investigations of the new gate tower from Corvins’ Castle
Authors: Ion R M , Tincu S , Iancu L , Grigorescu R M , Radulescu C , Teodorescu S , Dulama I D , Stirbescu R M , Bucurica I A , Minca I , Ion M L , Gheboianu A I 
Published: August 2019

Abstract
The archaeometric study of some samples from New gate Tower from Corvins’ Castle are analyzed in this paper in order to identify the raw materials nature and weathering / deterioration processes of these artifacts. Modern analytical techniques, as XRD, FTIR, Raman, SEM-EDS, colorimetry, porosimetry, thermal analysis are used to evaluate the structure and chemical composition (quartz, mica, dolomite, feldspar and plagioclase as albite and microcline minerals). Some minerals similar with apatites have been evidenced being responsible for the consolidated resistance structure inside of the towers.
Dental impression techniques assessment: patients’ rating and perceptions
Authors: Bolat M , Bosinceanu D-N , Surlari Z , Ciocan-Pendefunda A , Bida C , Balcos C , Bosinceanu D-G 
Published: August 2019

Abstract
Dental impression in dentistry is used for many purposes. One of these is to make a model that allows the study of fine details outside the oral cavity, which is sometimes impossible to achieve by direct prosthetic field inspection. Purpose: Through the study, we aim to highlight the importance of the patient's understanding and availability of the prosthetic field impression techniques. Material and method: The study lot consisted of 54 patients who formed the data base processed throughout the research, men and women aged 35 to 50 with a partial or total edentation. Conventional impression for mandibular and maxillary jaw were taken with a polyether type material (Impregum, 3 M ESPE) and addition silicones (Express STD Putty Regular Set 3M), and digital impression was done with the AC Omnicam chairside system (Cerec OMNICAM, Sirona Dental GmBH). Interpretation of results was performed using statistical programs SPSS 15.0 and Wilcoxon Signed-Rank Test, with p = 0.05 as the minimum statistical reference value. Patient preference for impression technique was evaluated with a comparative questionnaire of 5 questions, the results being interpreted with SPSS 15.0. Conclusions: Following the study, digital impression offers increased patient comfort for many reasons. The small size of the intraoral scanner eliminates the inconvenience of holding a voluminous, material-loaded portrait that generates the feeling of vomiting in many patients. At the same time, several patients may experience allergic reactions of impression materials, a situation that does not occur using digital technology. There is also a risk of swallowing the impression material in the event of improper handling.
Electric cars as environmental monitoring IoT Network
Authors: Rus C , Marcus R , Pellegrini L , Leba M , Rebrisoreanu M , Constandoiu A 
Published: August 2019

Abstract
With the intensification of traffic in large urban agglomerations, the need for monitoring of environmental parameters is increasingly being observed and more and more efficient solutions are being sought for taking over and processing these data. It is proposed to build a network of sensors mounted on electric vehicles to be used to create an interactive map of environmental pollution in urban areas. It has often been observed that motorized air quality monitoring platforms are propelled by conventional gasoline or diesel engines and therefore also produce significant pollution factors that can alter data taken over by the sensor network. The use of an electrical monitoring system has as a major benefit greater accuracy in retrieving data from pollution detectors as it does not appear in the data taken and the influence of classic monitoring system pollution using a classic propulsion platform. It is also proposed that efficient communication algorithms be made between the sensor networks to take data on the quality of the environment.
3D modelling and simulation of human upper limb
Authors: Risteiu M N , Rosca S D , Leba Monica 
Published: August 2019

Abstract
In this paper we analyse the kinematics and dynamics of the human upper limb to determine the position and the orientation of the shoulder and elbow joints in accordance with the forward and reverse kinematic mathematical model and the Jacobian forward and reverse kinematic mathematical model. We also developed a 3D human arm model in a computer aided-design software based on the result determined from mathematical models and in accordance with five degrees of freedom offered by anatomical position of human arm revolute joints associated to the shoulder and elbow. We simulated the entire dynamics of human arm in Matlab-Simulink in order to control the movement according to different predefined trajectories.
Determination of air quality in a petroleum extraction area
Authors: Dragan V M , Tudor B D , Pintilie L G 
Published: August 2019

Abstract
Direct measurements on atmospheric pollutants have the advantage of measuring emissions in real time rather than by theoretical calculations. In order to determine the air quality in the analyzed area, the measurements of the emissions, at several points of work in order to identify as many sources of noxious emissions were made. A series of noxious emissions measurements were performed from several points of the analyzed perimeter to detect the level of pollutants in the atmosphere. To estimate the amount of pollutants, emitted into the atmosphere, four pollutant sources were taken into account: combustion plants, reservoir parks, traffic inside the enclosure, wells. The results of the four monitored areas of activity were compared with the current legislation [1] on the safety and health of workers against the risks related to the presence of chemical agents.
Studies on galvanic corrosion of metallic materials in marine medium
Authors: Nejneru C , Savin C , Perju M C , Burduhos-Nergis D D , Costea M , Bejinariu C 
Published: August 2019

AbstractGalvanic corrosion occupies an important place among the corrosion techniques studies, especially because harbors and naval installations presents multiple components which are in direct contact with saltwater during operation time, such as: boats propeller - bronze, ship hull - carbon steel, rivets - steel, different types of protection shields - aluminum etc., thus metallic types combinations increase selective erosion depending on the metal position in the galvanic series. The galvanic corrosion prevention can be achieved by local cathodic protection with pieces of electronegative metal (zinc, magnesium) placed near the contacts or by inserting between these two metals of one or multiple high corrosion resistance materials to that specific medium. This paper presents an experimental study on different metal couplings in Black Sea water corrosion medium, in order to highlight the anodic (oxidation) or cathodic (reduction) protection of each metal during coupling.
The influence of the technological process of rice husk ash synthesis over its structure
Authors: Baraitaru A G , Olteanu M V , Moncea A M , Dumitru D F , Panait A M , Deák Gy 
Published: August 2019

Abstract
In this research, the identification of the influence of several methods of rice husk ashes preparation over their structure was followed, by varying the synthesis parameters, as well as by subsequent application of the grinding process. The obtained rice husk ash samples with high silica composition, were characterized by X-ray diffraction (XRD) to determine the compositional phases and crystalline structure of the samples, by scanning electron microscopy (SEM) to observe the microstructure and the particle sizes, and by laser granulometry to establish the granulometric distribution. Thus, it was possible to conclude that the technological process used for rice husk ash preparation shows influences on the samples microstructure and composite phases, as well as differences in particle sizes by decreasing their values as a result of mechanical process application. Based on these analyses, it was verified which of the obtained rice husk ash samples present a suitable microstructure, in order to capitalize them in environmental applications.
Trajectories and walking velocity of pedestrian walking through angled-corridors: A unidirectional scenario
Authors: Rahman N A , Alias N A , Sukor N S A , Halim H , Gotoh H , Hassan F H 
Published: August 2019

Abstract
When comparing corner and straight corridor to acute- and obtuse- angled-corridors, effects of later types of corridors on the pedestrian dynamics is rarely studied. Rationally, there will be changes to the pedestrian walking behavior when approaching and walking through angled-corridor due to the turning angle. This could trigger restrictions to the flow of walkers and causing congestion near that turning angle. Hence, this study is purposely to investigate empirically the characteristics of pedestrians when walking through different angled-corridors (60°, 90° and 135°). Controlled experiment of pedestrians walking through built angled- corridors was conducted at the Multipurpose Hall of USM, involving 60 local undergraduate students. Thirty walking tasks were performed by considering different number of pedestrians (NOP: 1, 15, 30, 45 and 60). Video-based tracking of pedestrian’s trajectories walking through angled-corridors was performed and effects on walking characteristics and velocity were discussed. It is found that, pedestrian not necessarily choose the shortest path while walking, but prefer to occupy all space available to suit their own speed and comfort. As the degree of corridor increases, the impacts to pedestrian walking velocity become less. However, in response to the increase in number of pedestrians, the development of changing track can be witnessed.
Finite element analysis of mode-I interlaminar fracture of lignocellulosic laminate specimens by virtual crack closure technique
Authors: Ulea M , Baba M N 
Published: August 2019

Abstract
The paper aims to study the interlaminar fracture of lignocellulosic laminate specimens made of beech veneer with urea formaldehyde resin and rye flour under pure mode-I loading. In order to determine the critical value of strain energy release rate GIc
, representing one of the material input parameters for a finite element analysis involving the interlaminar fracture behaviour of a laminate structure under complex loading conditions, a lot of double cantilever beam (DCB) specimens processed from a lignocellulosic laminate beech veneer plate were tested by applying the specific standard procedures in conjunction with the modified beam theory method for data reduction. The propagation of interlaminar fracture under pure mode-I was then simulated by finite element analysis using layered conventional shell elements, based on the Virtual Crack Closure Technique (VCCT) in Abaqus/Explicit. Good agreements between the load-displacement curves obtained through the use of finite element analyses and the experimental testing results were obtained.
Evaluation of surface characteristics of direct composite resins after finishing and polishing using fractal analysis
Authors: Nica I , Iovan G , Pancu G , Stoleriu S , Andrian S 
Published: August 2019

Abstract
Surface characteristics of two composite resins (Filtek Ultimate Universal Restorative, 3M ESPE and Filtek Ultimate Flowable Restorative, 3M ESPE) after finishing and polishing procedure using three systems: two steps Sof-Lex system, 3M ESPE, multi-steps Super Snap system, Shofu, Inc. Kyoto, Japan and multi-steps OptiDisc system, KerrHawe SA were analyse using SEM and AFM investigations. Fractal analysis was performed on SEM and AFM images and the mean fractal dimension was calculated for each sample using FracLac software. For both tested materials decreased fractal dimension with the increase of SEM magnification was observed. Multi-steps OptiDisc system determined the biggest decrease of fractal dimension for both materials, followed by Sof-Lex system and Super Snap. Fractal analysis seems to be an appropriate method to investigate the complex structure of composite resins.
Research and Design of Intellectual Products for People with Visual Impairments
Authors: Huo Tong , Liu Songming , Fan Shuangjing , Liu Yi 
Published: August 2019

Abstract
The paper mainly focuses on designing intellectual products for people with visual impairments. By analyzing physiological features, psychological characteristics and pattern of behavior of people with visual impairments and comparatively analyzing the status of current intellectual products for people with visual impairments on the market, the research designed the products based on LEGO EV3 model and proposed three functionally intellectual products design for people with three different visual impairments symptoms: automatic user tracking guide stick for the blind, traffic signals identifying guide stick for color blindness people and dim light alarm for night blindness people. The proposed products will help people with visual impairments go out freely and independently to enjoy a convenient life in the future.
Exploration of Practice Teaching Mode of Product Design Based on Three-dimensional Printing Technology
Authors: Shu Wei , Sun Fuliang 
Published: August 2019

Abstract
As a highly interdisciplinary and practice major, product design is expected to achieve the cultivation of innovative talents with artistic accomplishment, engineering knowledge, business awareness and design skills within limited learning time. Technology and art are regarded as the core of its cultivation. In the traditional industrial processing system, mass industrial production is taken by product design practice as the premise. Nevertheless, the maturity of rapid prototyping system represented by three-dimensional printing technology and its combination with whole-process digitalization and intelligent production bring about a great reduction in individualized customization and flexible production costs, which leads to new development opportunities for product design practice. This paper is devoted to the discussion of the practice teaching mode of product design in the context of three-dimensional printing technology.
Research on national cultural creative products design from the perspective of internationalization
Authors: Liu Wenming , Bao Xiaoxiao 
Published: August 2019

Abstract
Through the analysis of the development and status quo of cultural creative product design and the analysis of the characteristics of national cultural concepts, the author tries to propose the key points of the national cultural creative product design method from the perspective of internationalization. Using the literature research method, it sorts out the development and current situation of the design concept of cultural and creative products; it also carries out functional classification of cultural and creative products; and it discriminates the concept of national culture; Finally, through the summary of the existing research directions and contents of the combination of national culture and creative product design, it is proposed that from the perspective of internationalization, designers can only accurately convey the image of national culture to users through creative products if they have a deep understanding of all aspects of national culture. Through the grasp of three aspects of emotion, inheritance and interactivity, it can help designers to effectively carry out innovative design of national cultural products from the perspective of internationalization.
The Design of Face Check-in Scheme on Conference Industry
Authors: Zhang Jiankang , Zhou Yuxin , Zhang Xuying 
Published: August 2019

Abstract
The application of face check-in scheme has a positive impact on the conference industry, which can improve the service quality of the exhibition industry, strengthen the MICE activities site management, and boost the deeper development of the Intelligence exhibition. The API of face check-in scheme provides five interface, which named the conference operation interface (it is used to create and modify meetings), the conference information inquiry interface, the user registration interface, the face verification interface, and check-in status feedback interface. It can be effectively realized the conference forms publishing and managing, and fill in the registration form online, free check-in APP, unified management of check-in data and other functions.