bluuebunny/crossref_metadata_2025 huggingface dataset:
A Low-mass Exoplanet Candidate Detected by K2 Transiting the Praesepe M Dwarf JS 183
Authors: Pepper Joshua , Gillen Ed , Parviainen Hannu , Hillenbrand Lynne A. , Cody Ann Marie , Aigrain Suzanne , Stauffer John , Vrba Frederick J. , David Trevor , Lillo-Box Jorge , Stassun Keivan G. , Conroy Kyle E. , Pope Benjamin J. S. , Barrado David
Published: March 2017

We report the discovery of a repeating photometric signal from a low-mass member of the Praesepe open cluster that we interpret as a Neptune-sized transiting planet. The star is JS 183 (HSHJ 163, EPIC 211916756), with T
eff = 3325 ± 100 K, M
* = 0.44 ± 0.04 M
⊙, R
* = 0.44 ± 0.03 R
⊙, and

. The planet has an orbital period of 10.134588 days and a radius of R

P
 = 0.32 ± 0.02 R
J. Since the star is faint at V = 16.5 and J = 13.3, we are unable to obtain a measured radial velocity orbit, but we can constrain the companion mass to below about 1.7 M
J, and thus well below the planetary boundary. JS 183b (since designated as K2-95b) is the second transiting planet found with K2 that resides in a several-hundred-megayear open cluster; both planets orbit mid-M dwarf stars and are approximately Neptune sized. With a well-determined stellar density from the planetary transit, and with an independently known metallicity from its cluster membership, JS 183 provides a particularly valuable test of stellar models at the fully convective boundary. We find that JS 183 is the lowest-density transit host known at the fully convective boundary, and that its very low density is consistent with current models of stars just above the fully convective boundary but in tension with the models just below the fully convective boundary.
High-resolution H-band Spectroscopy of Be Stars with SDSS-III/APOGEE. II. Line Profile and Radial Velocity Variability
Authors: Chojnowski S. Drew , Wisniewski John P. , Whelan David G. , Labadie-Bartz Jonathan , Fernandes Marcelo Borges , Lin Chien-Cheng , Majewski Steven R. , Stringfellow Guy S. , Mennickent Ronald E. , Roman-Lopes Alexandre , Tang Baitian , Hearty Fred. R. , Holtzman Jon A. , Pepper Joshua , Zasowski Gail
Published: March 2017

We report on the H-band spectral variability of classical Be stars observed over the course of the Apache Point Galactic Evolution Experiment (APOGEE), one of four subsurveys comprising SDSS-III. As described in the first paper of this series, the APOGEE B-type emission-line (ABE) star sample was culled from the large number of blue stars observed as telluric standards during APOGEE observations. In this paper, we explore the multi-epoch ABE sample, consisting of 1100 spectra for 213 stars. These “snapshots” of the circumstellar disk activity have revealed a wealth of temporal variability including, but not limited to, gradual disappearance of the line emission and vice versa over both short and long timescales. Other forms of variability include variation in emission strength, emission peak intensity ratios, and emission peak separations. We also analyze radial velocities (RVs) of the emission lines for a subsample of 162 stars with sufficiently strong features, and we discuss on a case-by-case basis whether the RV variability exhibited by some stars is caused by binary motion versus dynamical processes in the circumstellar disks. Ten systems are identified as convincing candidates for binary Be stars with as of yet undetected companions.
Physical Properties of the Very Young PN Hen3-1357 (Stingray Nebula) Based on Multiwavelength Observations
Authors: Otsuka Masaaki , Parthasarathy M. , Tajitsu A. , Hubrig S.
Published: March 2017

We carried out a detailed analysis of the interesting and important very young planetary nebula (PN) Hen3-1357 (Stingray Nebula) based on a unique data set of optical to far-IR spectra and photometric images. We calculated the abundances of nine elements using collisionally excited lines (CELs) and recombination lines (RLs). The RL C/O ratio indicates that this PN is O-rich, which is also supported by the detection of the broad 9/18 μm bands from amorphous silicate grains. The observed elemental abundances can be explained by asymptotic giant branch (AGB) nucleosynthesis models for initially 1–1.5 M
⊙ stars with Z = 0.008. The Ne overabundance might be due to the enhancement of 22Ne isotope in the He-rich intershell. Using the spectrum of the central star synthesized by Tlusty as the ionization/heating source of the PN, we constructed the self-consistent photoionization model with Cloudy to the observed quantities and derived the gas and dust masses, dust-to-gas mass ratio, and core mass of the central star. About 80% of the total dust mass is from warm–cold dust component beyond ionization front. Comparison with other Galactic PNe indicates that Hen3-1357 is an ordinary amorphous silicate-rich and O-rich gas PN. Among other studied PNe, IC4846 shows many similarities in properties of the PN to Hen3-1357, although their post-AGB evolution is quite different from each other. Further monitoring of observations and comparisons with other PNe such as IC4846 are necessary to understand the evolution of Hen3-1357.
Polarization of Coronal Forbidden Lines
Authors: Li Hao , Landi Degl’Innocenti Egidio , Qu Zhongquan
Published: March 2017

Since the magnetic field is responsible for most manifestations of solar activity, one of the most challenging problems in solar physics is the diagnostics of solar magnetic fields, particularly in the outer atmosphere. To this end, it is important to develop rigorous diagnostic tools to interpret polarimetric observations in suitable spectral lines. This paper is devoted to analyzing the diagnostic content of linear polarization imaging observations in coronal forbidden lines. Although this technique is restricted to off-limb observations, it represents a significant tool to diagnose the magnetic field structure in the solar corona, where the magnetic field is intrinsically weak and still poorly known. We adopt the quantum theory of polarized line formation developed in the framework of the density matrix formalism, and synthesize images of the emergent linear polarization signal in coronal forbidden lines using potential-field source-surface magnetic field models. The influence of electronic collisions, active regions, and Thomson scattering on the linear polarization of coronal forbidden lines is also examined. It is found that active regions and Thomson scattering are capable of conspicuously influencing the orientation of the linear polarization. These effects have to be carefully taken into account to increase the accuracy of the field diagnostics. We also found that linear polarization observation in suitable lines can give valuable information on the long-term evolution of the magnetic field in the solar corona.
Degradation and excretion of theFusarium toxin deoxynivalenol by an edible insect, the Yellow mealworm (Tenebrio molitor L.)
Authors: Van Broekhoven S. , Gutierrez J. Mota , De Rijk T.C. , De Nijs W.C.M. , Van Loon J.J.A.
Published: March 2017

Insects could provide an alternative and more sustainable source of animal protein compared to conventional livestock. Yellow mealworms (Tenebrio molitor L.) can be grown on diets composed of organic by-products. However, these diets could be contaminated with mycotoxins. Thus far, little is known about possible retention, sequestration, excretion or detoxification of mycotoxins by edible insects.T. molitor larvae were grown on wheat flour naturally contaminated with mycotoxins among which deoxynivalenol (DON) was predominant (4.9 mg/kg), wheat flour spiked with 8 mg/kg pure DON, and uncontaminated wheat flour. Larval survival and weight gain on the three diets were compared. Survival was high for larvae on all dietary treatments (>98%) and no difference in weight gain was observed when comparing larvae grown on uncontaminated control diet with larvae grown on contaminated diets (P=0.091). Presence of mycotoxins in larvae and larval faeces was analysed using LC-MS/MS. No DON or DON-derivatives were detected inT. molitor after harvest of the larvae, pointing to degradation by the larvae. Excretion of DON in larval faeces was ca. 14% of the amount of DON ingested for larvae grown on naturally contaminated diet and ca. 41% for larvae grown on DON-spiked diet. These are promising results with respect to food safety of mealworms or derived products grown on mycotoxin-contaminated feed. However, enzymatic degradation of DON inT. molitor, as well as possible toxicity of the resulting metabolites, remain to be further investigated.
Le suppliche dei musicisti della Cappella musicale del Santo di Padova, (sec. XVIII): riordinamento archivistico e alcuni percorsi di ricerca nell’archivio della Veneranda Arca di Sant’Antonio
Authors: Foladore Giulia
Published: March 2017

The article provides information about the recent archival reorganization and descriptive analysis of the petitions by eighteenth-century musicians preserved in the archive of the Veneranda Arca di Sant’Antonio di Padova, explaining the criteria adopted and methodological principles applied, and outlining possible new avenues of research.
Simfonični repertoar Goriške dežele v 18. in zgodnjem 19. stoletju
Authors: Venišnik Vesna
Published: March 2017

Zgodovinski arhiv v Gorici (Archivio storico provinciale di Gorizia) hrani obsežno zbirko muzikalij iz 18. in začetka 19. stoletja. Zbirka je žanrsko raznolika, saj vsebuje cerkvena dela, solistična dela za instrumente s tipkami, zbirke arij, komorna dela in tudi precej simfoničnih del. Med zbirkami, relevantnimi za slovensko glasbeno zgodovino, je poleg arhiva ljubljanske Filharmonične goriška zbirka edina, ki dokazuje kontinuirano gojenje simfonične glasbe. Zbirka hrani dela različnih skladateljev: od G. C. Wagenseila, J. Stamitza in drugih mannheimskih skladateljev preko A. Brioschija do zrelejših del J. Haydna, dela A. Gyrowetza in I. Pleyela ter njunih sodobnikov ter prvo in tretjo simfonijo L. Beethovna.
The facade and the back of a solemn musical architecture: the structure of Epicedion Harmonicum by Jacobus Gallus (Jacob Handl) and its unresolved enigma
Authors: Desmet Marc
Published: March 2017

Upon the death of Zabrdovice Abbot Caspar Schönauer, Jakob Handl published his Epicedion Harmonicum in 1589. This work, which has heretofore been viewed as a single three-part composition, consists actually of three independent compositions published in one volume. Their independence is indicated by their texts, musical characteristics, and the historical circumstances surrounding their creation.
Ljubljansko-graška skupina frančiškanskih koralnih rokopisov in njen frančiškanski značaj
Authors: Snoj Jurij
Published: March 2017

Leta 1491 so se frančiškani observanti naselili v Ljubljani in zelo verjetno so kmalu za tem dobili potrebne koralne kodekse. Na osnovi nekaterih kazalcev je mogoče domnevati, da so bili to: dvodelni gradual in dvodelni psalter, ki sta zdaj v Frančiškanskem samostanu v Gradcu, ter antifonal, ki je v Frančiškanskem samostanu v Ljubljani. Ti rokopisi so izrazito frančiškanski; antifonal vsebuje med drugim pesniška oficija sv. Frančiška in sv. Antona, ki sta delo Julijana iz Speyerja, oficij sv. Klare in oficij za praznik sv. Trojice, ki sta kontrafakturi oficija sv. Frančiška, ter oficij za praznik Frančiškovih ran.
“Gallus apud Belgas:” The Douai Moralia (1603) Reconsidered
Authors: Desmet Marc
Published: March 2017

The collection of Moralia (Nuremberg, 1596) is the only volume of Handl’s music to have been republished shortly after the composer’s lifetime, and this in Douai, a city very distant from the Central European area where Handl’s music was most widely circulated. The nature of the new print is discussed in relation to the editio princeps.
Imported Music Scores in the Possession of the Gozze Family in Dubrovnik
Authors: Katalinić Vjera
Published: March 2017

The noble Gozze family in Dubrovnik maintained a respectable collection of musical material dating mostly from the late eighteenth
and early nineteenth centuries. It has been partly preserved in the music collection of the Monastery of the Friars Minors in Dubrovnik, forming part of the material dating from the time of the Republic of Ragusa (Dubrovnik) kept there since the mid-nineteenth century. There is also a booklet – actually a catalogue – listing their musical material. On the basis of its notes on this music collection, a link between the catalogue and the material can be established. The prints and manuscripts were mostly purchased from abroad, and these provide various kinds of information on their origin, the context of their performance etc., thereby illustrating the taste of their owners.
Resistencia al fuego de pórticos simples de acero a dos aguas
Authors: Ferrán Gozálvez J. J. , Ferrer Gisbert C. , Redón Santafé M. , Sánchez Romero F. J. , Torregrosa Soler J. B.
Published: March 2017

El método habitual de análisis en situación de incendio consiste en el cálculo simplificado de barras aisladas. Es conservador al aplicarse a estructuras con capacidad de redistribuir esfuerzos. Se desconoce el tipo de fallo que afecta a la seguridad de las personas y extensión del fuego.

Se utiliza el análisis avanzado para obtener el comportamiento a fuego de un pórtico simple a dos aguas de acero conforme a la normativa española.

Se establece una metodología mediante un programa de cálculo estructural de propósito general (SAP2000), con un análisis dinámico no lineal del material (plástico) y geométrico (P-Delta y grandes desplazamientos), y propiedades mecánicas y térmicas dependientes de la temperatura. Se analizan los diferentes tipos de colapso. Se efectúan estudios paramétricos sobre la influencia de la rigidez de la base, protección de los soportes y cargas actuantes. Este cálculo puede permitir justificar mayores tiempos de resistencia al fuego que el análisis simplificado de barras.
El trazado del icosakaidígono en el Clypeus Jupiter-Ammon de Tarragona (s. I) y la faz de Cristo del rosetón de la catedral de Orvieto (s. XIV)
Authors: Lluis i Ginovart J. , Samper A. , Coll-Pla S. , Costa-Jover A.
Published: March 2017

Las técnicas de captura masiva de datos, como el escáner láser terrestre y la fotogrametría, permiten analizar con precisión objetos próximos y otros no accesibles, mediante métodos estadísticos. Su aplicación ha permitido analizar desde el punto de vista geométrico las esculturas de la figura Clypeus de Tarragona, Jupiter-Ammon (s. I) y la del rosetón de la catedral de Orvieto con la faz de Cristo (s. XIV). El Clypeus de Tarragona y el rosetón de la catedral de Orvieto está divido en 22 partes, formando un icosakaidígono, polígono que no aparece en los Elementa de Euclides, ni en el Almagesto de Tolomeo, ni en las escasas Practica Geometriae de la época. Estos polígonos pueden ser construidos mediante la división angular heredada de los constructores de astrolabios y cuadrantes; así como también mediante una escuadra de dos brazos, con el apoyo reiterado de los catetos sobre la hipotenusa, creando así una rotación del instrumento u otros métodos directos. La conclusión del análisis de estas figuras es que, estadísticamente, ambas esculturas tienen una construcción geométrica igual al del Reliquiario del Corporale del Miracolo di Bolsena (1337-1338) de la catedral de Orvieto.
An Applicable Way of Teaching Quality Evaluation Based on MOOC Platform
Authors: Zhuo Chen , Dong Xiaoming
Published: March 2017

The MOOC-based education is an important means to improve the quality of education as the increasing development of internet; meanwhile, the assessment of teaching quality is an indispensable aspect in teaching management, and it has been more and more important as the scale of the students' expansion, In order to deal with the challenges of big data processing effectively in the field of education, we designed a teaching quality assessment model on the MOOC platform based on comprehensive fuzzy evaluation. To verify the effectiveness of our method, a control experiment was adopted to explore the significance of our evaluation method, the results show that it can help teacher to prepare their teaching contents and students to improve their learning efficiency.
An Innovative Media Platform-Supported Blended Methodology in English for Dental Purposes Program
Authors: Asgari Arani Jafar
Published: March 2017

Due to the existing extensive curricula of English for Dental Purposes (EDP) courses and absence of enough weekly hours to cover them in Iran, there is a limited insufficient exposure to English to improve students’ English communication skills to the levels necessary for their future career. Therefore, there have been needs to appraise the present teaching approaches and reform the configuration and context of EDP classes to yield highest profit for their students. The study was designed to address issues central to the perception and expectations of students in regard the use and the impact of the social medium, WhatsApp. As part of this impression, a spectrum of procedures has been depicted to employ this cross-platform messaging application.

This research was conducted among 70 2nd year dentistry students at Kashan University of Medical Sciences, in a course called English for Dental Purposes (EDP). The descriptive research project employing a qualitative and quasi-experimental study was chosen to collect data using a valid and reliable pretest-posttest design. Two groups 35 subjects were randomly selected via simple random sampling. The control group was taught by conventional method, while the experimental group was taught through the proposed whatsApp assisted language learning approach in a blended way. A paired t-test was utilized to compare the results of each group and an independent sample t-test was utilized to compare the results in control and experimental group. The f-ratio value is 7.88138; the t-value is 2.80738. The p-value is .006512 and the result is significant at p < .01.

Therefore, there are good reasons to think WhatsApp-based method of teaching EDP as a more effective approach than the face to face method . The Likert scale questionnaire descriptively analyzed via SPSS 16.00 version revealed experimental group had generally positive attitudes towards Apps-based teaching of academic materials.

This media helps students get to be more capacitated in EDP, advances the class learning of English for Dental Purposes, enhances students' knowledge more satisfactorily, motivates them to gain a positive impact and willingness in their class activities and had resulted in more continuity in study and self-confidence. So, it deserves considering the incorporation of the new application i.e. WhatsApp effectively in the curriculum of EDP pedagogies as an educational means.
A Serious Game for Learning C Programming Language Concepts Using Solo Taxonomy
Authors: Yassine Alaeeddine , Chenouni Driss , Berrada Mohammed , Tahiri Ahmed
Published: March 2017

This paper conducts a study to identify pedagogical approaches and gameplay techniques involved in the development of serious games for teaching scientific courses in general especially programming languages. The concept of serious games is increasingly popular and is considered as an innovative teaching practice since it is based on information and communication technology and gamification to foster learning. To this end, a serious game "Perobo" will be introduced and discussed. It is based on a set of gameplay techniques and pedagogical approaches used for teaching pointers, considered as a difficult concept in C programming language, and essential for programming complex and advanced programs. The game is also based on a taxonomy design to define the learning levels.
Defining E-Learning Level of Use in Jordanian Universities Using CBAM Framework
Authors: Matar Nasim Abdulwahab
Published: March 2017

This paper presents a continuous work related to the status and engagement with e-learning systems by faculty members in Jordanian universities. Previous research study entitled (Evaluating E-Learning System Use by CBAM-Stages of Concern Methodology in Jordanian Universities, 2015) focused on defining stages of concern using one tool that is presented by CBAM Framework. The CBAM Framework provides another tool that is used specifically for measuring level of use of any educational technology. This research focused on using CBAM framework for the first time in Jordanian Higher educational context in order to present a systematic and well-defined methodology for evaluation that will be used for defining the exact engagement with e-learning. It is believed that the results of this research can be reflected positively on universities future policies and practices for developing the use of this educational technology in Jordan
The Role of Perceived Relevance and Attention in Teachers’ Attitude and Intention to Use Educational Video Games
Authors: Sánchez-Mena Antonio , Martí-Parreño José , Aldás-Manzano Joaquín
Published: March 2017

Educational video games (EVGs) are becoming a trending topic in education as a new teaching methodology which can help teachers to increase students’ attention and engagement during the learning process. Nevertheless, despite an increasing academic interest in EVGs little research has been devoted to delve into teacher’s beliefs affecting their attitude towards EVGs and how these beliefs also affect their intention to use EVGs in their courses. Using Keller’s ARCS model as a theoretical framework, the role of perceived relevance and attention in teachers’ attitude and intention to use EVGs is analyzed. To do so a research model is tested using a sample of 312 Higher Education teachers via structural equation modeling to predict teachers’ attitude and behavioral intention to use EVGs in their courses. Results suggest that perceived attention drawn by EVGs is a factor affecting teachers’ intentions to use EVGs in their courses. Perceived relevance was not found to affect directly neither attitude nor intention to use while teachers’ perceived attention was found to affect teachers’ perceived relevance of EVGs. Limitations of the study, implications for managers, and future research lines are addressed at the end of the paper.
Reflective Game Designers
Authors: Hudson Seth Andrew
Published: March 2017

This chapter argues that the study of game design in higher education has the power to directly impact changes in the current culture of the computer game industry, doing so through the incorporation of reflective practice in coursework and teacher practice. Highlighting the unique challenges faced by computer game design faculty and programs, along with challenges students face when seeking employment post-graduation, the author frames questions of student culture and identity as they relate to discipline-specific traditions and the games industry. The discussion calls for the leveraging of the prior knowledge students have as players and many faculty have through industry experience, and concludes with recommendations for adopting reflective practice across computer game design in higher education.
Emotions, Experience, and Identities in L2 Narrative Research
Authors: Miyahara Masuko
Published: March 2017

The main purpose of this study is to propose a more balanced approach in the conceptualizing of identity in the poststructuralist paradigm. Using gathered data, the study also offered a unique perspective on the intricate interplay in which learner identity and researcher identity are negotiated. A narrative analysis model is presented to offer transparency to the analytic process in narrative studies, and calls for a reflexive approach that is context-sensitive to the co-construction of interview interaction between the participant and the researcher. The use of ‘reflexive notes' at various stages of the research process is shown as a forceful vehicle that allows researchers to make explicit their assumptions, and evaluate how it shapes the interview interaction. In addition to the aim of the research, the study demonstrates how methodological choices, interests, subjectivities, and identities are intricately intertwined to influence the entire research process.
Citric Acid Complex Sol-Gel Method to Prepare Lu2SiO5:Eu Phosphor
Authors: Yang Yi , Yang Lei , Chen Yan Lin , Yan Ming
Published: March 2017

The Lu2SiO5 dried gel was prepared by the sol-gel reaction followed by a 24h drying at 90°C.The thermogravimetry–differential scanning calorimetry (TG-DSC) analysis curves of the dried gel demonstrates mass and enthalpy changes as temperature raised.The obtained dried gel was calcined at 900°C,1000°C,1100°Cand1200°C each for 2h to prepare polycrystalline Eu3+-dropped Lu2SiO5 phosphor.The phase composition and crystal structure was identified with an X-ray diffractometer (XRD).The dried gel was crystallized into A-type LSO phase at 1000°C, and transferred to B-type LSO phase when temperature was raised above 1050°C.The obtained LSO grain size is 200-300nm revealed in Field-emission scanning electron microscopy (FE-SEM) images.The photoluminescence spectrum of the obtained 2mol% Eu3+-dropped Lu2SiO5 phosphor showed a broad excitation band around 263nm and a sharp emission peak at 613nm.
Electrochemical Decomposition of Poly(Vinylidene Fluoride) Binder for a Graphite Negative Electrode in Lithium-Ion Batteries
Authors: Kim Min Ji , Lee Chang Hee , Jo Mun Hui , Jeong Soon Ki
Published: March 2017

To clarify the electrochemical decomposition of poly (vinylidene fluoride) (PVdF) used as a binder for lithium-ion batteries while simultaneously verifying the correlation between electrode resistance and the PVdF content in graphite negative electrodes, in this study, we applied lithium bis (trifluoromethanesulfonyl) imide, which suppresses graphite exfoliation, as a salt. As a result, the electrochemical decomposition of PVdF was observed at a higher potential than that at which the electrolyte was decomposed during the reduction process. Additionally, this study demonstrated (through electrochemical impedance spectroscopy analysis) that electrode resistances such as solid electrolyte interface and charge transfer resistance proportionally increased with the PVdF content.
Investigation of Evaporation in Laser Welding Vacuum Aluminum Alloy
Authors: Trushnikov Dmitriy , Salomatova Ekaterina S. , Belenkiy Vladimir Ya. , Olshanskaya Tatiana V.
Published: March 2017

In this paper the method of experimental estimation of the temperature in a penetration channel in laser welding is described on the basis of chemical elements concentration in the vapors above welding zone. The temperature of a vapor-gas phase in the penetration channel is determined when equating calculated and experimental concentrations of the elements.
An Experimental Verification of the Applicability of Steels S235 and DD11 for Aseismic Structural Provisions
Authors: Protivinsky Jiri , Krejsa Martin
Published: March 2017

Aseismic design of modern structures imposes a new requirement on structural engineers. Structural systems should withstand even very huge earthquakes. This goal cannot be achieved by standard design methods applying a linear elastic approach. An advanced aseismic design applies energy dissipating anti-seismic devices. During seismic event, these devices are exposed to a large plastic strain. The code EN 15129 is the standard on anti-seismic devices applicable in Europe. Mentioned standard defines a special material requirement imposed on devices working as energy absorbers. Material verification is possible only experimentally. In compliance with the instructions contained in the code EN15129, several cyclic tests of the materials S235 and DD11 have been used. Evaluation of the previous research and the current test results have proved that structural steel S235 is not applicable to the anti-seismic devices. As an alternative, steel DD11 has been suggested for this application. The test results have shown that the steel DD11 is applicable in specified range of target strain amplitudes.
Structure Formation and Nonmetallic Inclusions in Welded Joints when Welding Steel X65 by STT+API Technology
Authors: Fedoseeva Elenam M. , Olshanskaya Tatiana V.
Published: March 2017

In work the analysis of influence of structurization and nonmetallic inclusions on regularity of change of growth rate of a fatigue crack in different zones of a welded seam of steel X65 is carried out. Welded seams of the pipelines received by a combined method of welding of STT+API were investigated. Growth rate of a fatigue crack low in a root of the seam received when welding in the way STT. On border of the fatigue crack passing in the filling layers of a welded seam the inclusions which are settling down chains on borders of grains are found, being concentrators of tension.
Experimental Research of Effects of Electric Parameters on the Machining Speed and Surface Quality in EDM
Authors: Zhang Xiao Liang , Wang Zhao Xi
Published: March 2017

The effects of serials of electric parameters (i.e. electric pulsed current, electric pulse width, etc.) on machining speed and surface quality were investigated. Furthermore the selected parameters in electrical discharge machining (EDM) were optimized. Experiments indicate that the machining speed of EDM increases with the increasing of pulse current and pulse width. On the other side, the surface quality decrease with the increasing of pulse current and pulse width.
Experimental Testing of Shear Resistance on SFRC Slab Structures
Authors: Čajka Radim , Smirakova Martina , Vašková Jana
Published: March 2017

This paper deals with foundation slabs on the subsoil which are not reinforced with classically reinforcement but they are reinforced with steel fibers. It will be described several experimental test of FRC foundation slab which were reinforced with different amount of fibers. All tested slabs had dimension by 2.0 x 2.0 m and thickness 0.15m. On those slab a lot of physical quantities were measured and this paper focus especially on shear resistance.
The Concentration of Di(2-Ethylhexyl) Phthalate on a Flooring Surface in Dwelling House
Authors: Kim Hyun Tae , Tanabe Shin Ichi , Kim Tae Woo , Hong Won Hwa
Published: March 2017

This study was measured the concentration level of contamination by DEHP on indoor flooring surfaces. It was confirmed that vacuum-cleaning of dust accumulated on flooring surfaces would not completely eliminate DEHP in the flooring. Unlike ceilings or walls, children are more prone to come in direct contact with flooring; meaning children’s bare skin is more likely to be exposed to high-concentration of DEHP on flooring surfaces. As children lick their hands that come in direct contact with the flooring, their chance of orally ingesting DEHP is likely to increase as well. Given these findings, it is considered important to assess children’s exposure to DEHP in indoor environments and assess the risks thereof by investing the subject in relation to behavioral characteristics of children.
A Novel Synthesis of Solid-Solid (SSMePCM) by In Situ Polymerization
Authors: Khan Asfandyar , Pervez Md. Nahid , Saleem Muhammad Asad , Masood Rashid , Cai Ying Jie
Published: March 2017

In this research solid-solid microencapsulated phase change material (SSMePCM) with high thermal energy storage density (177.6 Jg/1) was synthesized successfully by in situ polymerization using biodegradable natural polymer chitosan as shell and polyethylene glycol (PEG-1000) as core. The morphology, chemical structure and thermal properties were characterized by optical microscopy (OM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC). The results show that the obtained SSMePCM dispersed individually with a spherical shape. Author (s) recommends the all set thermal and chemically steady microcapsule for thermal energy storage purposes as novel synthesized SSMePCM with latent heat storage capacities.
Preparation and Blood Coagulation Property of Ortho Hydroxytoluene Chitosan
Authors: Guan Jing , He Qin , Wang Xiao Hui , Huang Shu Jie , Li Zhi Hong , Liu Chang Jun , Li Fan , Shu Zhan
Published: March 2017

The aim of this paper was to synthesize ortho hydroxytoluene chitosan for hemostatic use. A series of modified chitosan were prepared by reductive amination through adjusting the dosages of salicylaldehyde and sodium borohydride. FTIR, elemental analysis and XRD tests were performed to analyze the composition, degree of substitution (DS) and crystallisability of chitosan derivatives. Rheological and blood coagulation experiments were carried out to measure its gel-forming and hemostasis property in vitro. The results showed ortho hydroxytoluene groups could be grafted on chitosan, DS value can be adjusted by the dosage of reactive agents, and the crystallinity of chitosan changed obviously after modification. The rheological results indicated high substituted (≥26.79 mol-%) ortho hydroxytoluene chitosan could gel blood and showed better blood coagulation property. High substituted ortho hydroxytoluene chitosan could improve hemostatic property significantly.
Prediction of Tool Wear in Pre-Sintered Ceramic Body Micro-Milling
Authors: Cheng Hong Lin , Li Jian Zhong , Xu Shuang Hu , Yu Zu Yuan
Published: March 2017

Ceramic material is widely used industrial products due to excellent physical and mechanical properties, which in turn post challenge to shape ceramic material into desired shape and accuracy. A feasible method is to process ceramic material in its pre-sintered state. However, the interior of pre-sintered ceramic body contains a lot of high hardness particles which causes serious tool wear, especially in the three-dimensional micro-milling. In this paper, a theoretical model of calculating tool average volume wear rate is proposed based on abrasive wear mechanism and fatigue wear mechanism in alumina ceramic micro-milling. Experiments under various processing parameters are carried out to verify this model. The results indicate that theoretical values of the tool wear rates agree with experimental results. Most of the deviations are within 10%.
A multi-objective fuzzy mathematical approach for sustainable reverse supply chain configuration
Authors: Darbari Jyoti D. , Agarwal Vernika , Yadavalli Venkata S.S. , Galar Diego , Jha Prakash C.
Published: March 2017

Background: Designing and implementation of reverse logistics (RL) network which meets the sustainability targets have been a matter of emerging concern for the electronics companies in India.Objectives: The present study developed a two-phase model for configuration of sustainable RL network design for an Indian manufacturing company to manage its end-of-life and endof-use electronic products. The notable feature of the model was the evaluation of facilities under financial, environmental and social considerations and integration of the facility selection decisions with the network design.Method: In the first phase, an integrated Analytical Hierarchical Process Complex Proportional Assessment methodology was used for the evaluation of the alternative locations in terms of their degree of utility, which in turn was based on the three dimensions of sustainability. In the second phase, the RL network was configured as a bi-objective programming problem, and fuzzy optimisation approach was utilised for obtaining a properly efficient solution to the problem.Results: The compromised solution attained by the proposed fuzzy model demonstrated that the cost differential for choosing recovery facilities with better environmental and social performance was not significant; therefore, Indian manufacturers must not compromise on the sustainability aspects for facility location decisions.Conclusion: The results reaffirmed that the bi-objective fuzzy decision-making model can serve as a decision tool for the Indian manufacturers in designing a sustainable RL network. The multi-objective optimisation model captured a reasonable trade-off between the fuzzy goals of minimising the cost of the RL network and maximising the sustainable performance of the facilities chosen.
Balloon occluded retrograde transvenous obliteration for bleeding gastric varices: Eyes see what the mind knows
Authors: Khera Pushpinder S , Myungsu Lee , Joonsung Choi
Published: March 2017

Approximately one in six patients with portal hypertension who develop varices at sites of portosystemic venous collaterals has gastric varices due to hepatofugal flow into the gastric veins. Bleeding from gastric varices, though less common, has a higher mortality and morbidity compared to bleeding esophageal varices, which are easier to manage endoscopically. The efferent channel for gastric varices is mostly the gastrorenal shunt (GRS) which opens into the left renal vein. Balloon-occluded transvenous obliteration (BRTO) involves accessing the GRS with an aim to temporarily occlude its outflow using a balloon catheter and at the same time injecting sclerosant mixture within the varix so as to cause its thrombosis and thereby obliteration. BRTO is one of the mainstays of minimally invasive treatment for bleeding gastric varices. In the minority of cases where the GRS is absent, conventional BRTO is technically not possible. However, accessing the small alternate shunt from the inferior phrenic vein may be possible if one is aware of its existence.
Role of penumbra mechanical thrombectomy device in acute dural sinus thrombosis
Authors: Mammen Suraj , Keshava Shyamkumar Nidugala , Moses Vinu , Aaron Sanjith , Ahmed Munawwar , Chiramel George K , Mani Sunithi E , Alexander Mathew
Published: March 2017

Background: In dural venous sinus thrombosis (DVST), the mortality ranges 5–30%. Deep venous system involvement and septic dural sinus thrombosis have a higher mortality rate. In acute occlusion, collateral flow may not be established, which may result in significant edema and mass effect. Endovascular interventions may be considered as a treatment option in appropriate high-risk patients with DVST. Materials and Methods: Eight patients with magnetic resonance imaging (MRI)-confirmed dural sinus thrombosis, who did not respond to the conventional standard medical treatment, were subsequently treated with mechanical thrombectomy using the Penumbra System®. In all cases, medical treatment including anticoagulants were continued following the procedure for a minimum period of 1 year. Results: Recanalization of the dural sinus thrombosis was achieved in all 8 cases. There were no immediate or late endovascular-related complications. One death occurred due to an unrelated medical event. At 6 months, there was notable improvement in the modified Rankin Score (mRS), with 5/8 (62%) patients achieving mRS of 2 or less. The follow-up ranged between 3 months and 26 months (mean: 14.5 months), and there were no new neurological events during the follow-up period. Conclusion: Cerebral venous sinus thrombosis is a rare but life-threatening condition that demands timely diagnosis and therapy. In cases of rapidly declining neurological status despite standard therapy with systemic anticoagulation and anti-edema measures, mechanical thrombectomy could be a lifesaving and effective option. In this study, good outcomes were observed in the majority of patients at long-term follow up.
Spectrum of pulmonary valve morphology and its relationship to pulmonary trunk in tetralogy of Fallot
Authors: Chacko Binita R , Chiramel George K , Vimala Leena R , Manuel Devi A , Joseph Elizabeth , Reka K
Published: March 2017

Background: Tetralogy of Fallot (TOF) is a complex congenital heart disease with anatomic variations. Although the pulmonary valve in TOF is abnormal, it has not been studied well, especially on newer imaging modalities such as multidetector computed tomography (CT), which gives excellent anatomic detail. Aims: The aim of this study was to assess the morphology of pulmonary valve in TOF on CT and evaluate its association with the degree of hypoplasia of infundibulum and pulmonary trunk. Materials and Methods: The cardiac CT scans of 30 patients with TOF were reviewed to evaluate the morphology of the pulmonary valve, infundibulum, and pulmonary arteries. Fisher's exact test was performed to examine the association between pulmonary valve morphology and degree of hypoplasia of the infundibulum and pulmonary trunk. Results: 16.7% of patients with TOF had pulmonary atresia. The prevalence of tricuspid, bicuspid, and absent valves were 10%, 53.3% and 6.7%, respectively. In another 13.3% of patients, although valve tissue was present, exact morphology could not be determined on CT. The commissures of 62.5% of the bicuspid valves were at 12 o'clock and 6 o'clock or slightly off the midline. There was statistically significant association between valve morphology and degree of infundibular hypoplasia (P < 0.001) and calibre of pulmonary trunk (P < 0.001). Conclusion: Morphological abnormality of the pulmonary valve is common in TOF. The most common type of pulmonary valve in TOF patients is bicuspid valve with commissures at 12 o'clock and 6 o'clock or slightly off the midline. Fewer cusps of the pulmonary valve are associated with a more severe degree of pulmonary artery hypoplasia.
Initial clinical experience with 68Ga-DOTA-NOC prepared using 68Ga from nanoceria-polyacrylonitrile composite sorbent-based 68Ge/68Ga generator and freeze-dried DOTA-NOC kits
Authors: Chandra Piyush , Shetye Bhakti , Chakravarty Rubel , Mukherjee Archana , Pandey Usha , Jha Ashish , Purandare Nilendu , Shah Sneha , Agrawal Archi , Ram Ramu , Dash Ashutosh , Rangarajan Venkatesh
Published: March 2017

Somatostatin receptor positron emission tomography–computed tomography (PET/CT) with 68Ga-1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) peptides have become an indispensable part of disease assessment in patients with neuroendocrine tumors and forms the basis of personalized therapy with peptide receptor-based radionuclide therapy. With growing utilization of PET/CT in developing countries, availability of the indigenous GMP-certified 68Ge/68Ga generators is expected to further promote cost-effective molecular imaging service to the cancer patients. We present our initial clinical experience in 32 patients injected with 68Ga-DOTA-NOC prepared using 68Ga eluted from Bhabha Atomic Research Centre nanoceria-polyacrylonitrile sorbent-based 68Ge/68Ga generator and freeze-dried DOTA-NOC cold kits.
Metabolic Activity Value in the Posterior Cingulate Cortex Using F-18 Fluorodeoxyglucose Positron Emission Tomography Brain to Predict the Severity of Alzheimer's
Authors: Huda Aulia , Kartamihardja Achmad , Darmawan Budi , Budiawan Hendra , Wiwie Martina
Published: March 2017

Alzheimer's disease (AD) is a type of dementia which is known as one of a major problem in elderly. Clinicians commonly use mini-mental state examination (MMSE) score to determine the severity of cognitive decline, but MMSE has some limitations such as more subjective, influenced by age, educational degree, and local culture. F-18 fluorodeoxyglucose positron emission tomography (F-18 FDG PET) can be used to assess the process of glucose metabolism in posterior cingulate cortex (PCC) area which endures a central role in supporting cognitive function directly. The purpose of this study is to observe a correlation between metabolic activity value of PCC and MMSE score in predicting the severity of AD. A cross-sectional study was done to 30 subjects suspect AD disease with aged 60 years and older. Characteristic data including gender, age, and education, MMSE scoring by psychiatrist, and imaging of F-18 FDG PET were established. The results of correlation test between the value of FDG metabolic activity and MMSE score shows that the value of metabolic activity in the PCC area tends to increase along with the increase of MMSE score (rs = 0.411, P = 0.024). While from the results of multiple regression test with predictor variable consisting of F-18 FDG metabolic activity in the PCC, gender, age, education level, and the interaction between the metabolic activity of F-18 FDG at PCC and gender, a regression model was obtained. There is a significant correlation observed between the captured of F-18 FDG radioactivity with MMSE score in PCC area which can be used as a tool to predict the severity of AD.
An evaluation of deviation from the international atomic energy agency-international commission on radiological protection proposed equation for calculation of radiation dose rate emanating from the patients with differentiated thyroid cancer undergoing radioiodine (I-131) therapy
Authors: Dehkordi Forough , Rasuli Behrouz , Mahmoud-Pashazadeh Ali
Published: March 2017

The main purpose of this study was to investigate dose rate emanating from patients treated with 131I to evaluate which of the theoretical formulas, inverse-square law (ISL) and International Atomic Energy Agency-International Commission on Radiological Protection (IAEA-ICRP) suggested equation, can provide a sufficiently close approximation of the measured dose rate. Measurements were performed based on the IAEA safety report No. 63 method at 0, 12, 24, and 48 h after administration of radioiodine at a distance of 1 m for 69 patients and for the rest of 67 patients, dose rate was measured at 2, 4, 24, and 48 h at a distance of 2 m. Results revealed that the ISL formula gained better approximation of measured dose rates than the IAEA-ICRP equation with the lesser error. The ISL formula is still more reliable than the novel method of dose calculation in the vicinity of patients. This finding reminded us the prime importance of distance as a radiation protection principle.
Efficient Time-Stepping/Spectral Methods for the Navier-Stokes-Nernst-Planck-Poisson Equations
Authors: Liu Xiaoling , Xu Chuanju
Published: March 2017

This paper is concerned with numerical methods for the Navier-Stokes-Nernst-Planck-Poisson equation system. The main goal is to construct and analyze some stable time stepping schemes for the time discretization and use a spectral method for the spatial discretization. The main contribution of the paper includes: 1) an useful stability inequality for the weak solution is derived; 2) a first order time stepping scheme is constructed, and the non-negativity of the concentration components of the discrete solution is proved. This is an important property since the exact solution shares the same property. Moreover, the stability of the scheme is established, together with a stability condition on the time step size; 3) a modified first order scheme is proposed in order to decouple the calculation of the velocity and pressure in the fluid field. This new scheme equally preserves the non-negativity of the discrete concentration solution, and is stable under a similar stability condition; 4) a stabilization technique is introduced to make the above mentioned schemes stable without restriction condition on the time step size; 5) finally we construct a second order finite difference scheme in time and spectral discretization in space. The numerical tests carried out in the paper show that all the proposed schemes possess some desirable properties, such as conditionally/unconditionally stability, first/second order convergence, non-negativity of the discrete concentrations, and so on.
Delaunay Graph Based Inverse Distance Weighting for Fast Dynamic Meshing
Authors: Wang Yibin , Qin Ning , Zhao Ning
Published: March 2017

A novel mesh deformation technique is developed based on the Delaunay graph mapping method and the inverse distance weighting (IDW) interpolation. The algorithm maintains the advantages of the efficiency of Delaunay graph mapping mesh deformation while it also possesses the ability of better controlling the near surface mesh quality. The Delaunay graph is used to divide the mesh domain into a number of sub-domains. On each sub-domain, the inverse distance weighting interpolation is applied, resulting in a similar efficiency as compared to the fast Delaunay graph mapping method. The paper will show how the near-wall mesh quality is controlled and improved by the new method