bluuebunny/crossref_metadata_2025_split huggingface dataset:
Immunogenicity of a rheumatoid arthritis protective sequence when acquired through microchimerism
Authors: Kanaan Sami B. , Sensoy Oyku , Yan Zhen , Gadi Vijayakrishna K. , Richardson Michael L. , Nelson J. Lee 
Published: September 2019

SignificanceHLA genes confer the strongest genetic autoimmune disease risk. SpecificHLA-DRB1alleles predispose to rheumatoid arthritis (RA), while others encoding the sequence DERAA are RA-protective. Unexpectedly, having given birth to children with DERAA+HLA-DRB1alleles prior to onset was found to increase RA risk in women. We show that microchimerism (Mc; allogeneic cell long-term legacy of pregnancy) carrying DERAA+HLA increases the odds of RA 17-fold and that allogeneic cells carrying DERAA stimulated DERAA−/−T cells in vitro. Microbial-derived DERAA peptides (among others) are known to stimulate DERAA-directed T cells naturally present in DERAA−/−individuals. Our data indicate that Mc with DERAA alloantigens can potentially activate similar adaptive immunity pathways and mechanistically link naturally occurring Mc to an autoimmune disorder.
Development and utilization of human decidualization reporter cell line uncovers new modulators of female fertility
Authors: Haller Meade , Yin Yan , Ma Liang 
Published: September 2019

Significance
Up to 15% of couples experience infertility. Implantation must occur in order for the pregnancy hormone hCG to be detected, and thus many pregnancies go unrecognized before being lost due to implantation failure. Decidualization is a complex differentiation process during which the uterine lining grows and dramatically changes form in response to ovarian hormone stimulus, and this process is required for successful implantation. By developing and utilizing a new reporter cell line, the present study systematically uncovers more than 4,000 genetic and chemical modulators of the human decidual response in the hopes of catalyzing new treatments for female infertility, subfertility, and recurrent pregnancy loss.
Water follows polar and nonpolar protein surface domains
Authors: Qiao Baofu , Jiménez-Ángeles Felipe , Nguyen Trung Dac , Olvera de la Cruz Monica 
Published: September 2019

Significance
The hydration of molecules affects their physical and chemical properties. In particular, the functions and interactions of various proteins are determined by the conformation of water molecules around polar and nonpolar protein surface domains. Therefore, understanding the local interactions between water molecules and the polar and nonpolar protein surface domains such as water molecule conformations in protein hydration layers benefits targeted protein engineering, and recognition of molecules including proteins, DNA/RNA, cell membranes, and drugs. By using atomistic simulations, we show distinct correlations between the hydration water molecules and the different types of protein surface domains.
Language programming in rural and regional Victoria
Authors: Slaughter Yvette , Lo Bianco Joseph , Aliani Renata , Cross Russell , Hajek John 
Published: September 2019

AbstractDespite decades of often ambitious policies in Australia, languages education is still characterized by intermittent commitment to the teaching of languages, with inequitable access particularly entrenched in rural and regional contexts. While research has focused on the practical and material constraints impacting on policy implementation, little research has investigated the role of the discursive terrain in shaping expectations and limitations around what seems achievable in schools, particularly, from the school principal perspective. Beginning with an overview of policy interventions and an analysis of contemporary challenges, we use Q methodology to identify and analyze viewpoints at work in similarly-positioned rural and regional schools. In doing so, we seek to determine what seems possible or impossible across settings; the role of principals in enabling and constraining pathways for the provision of school language programs, and the need for macro-level language policy to be informed by constraints specific to rural and regional contexts.
Exploring a possible relationship between the attitude of experienced English learners towards Australian English and
their L2 motivation
Authors: Farley Florence , Stracke Elke 
Published: September 2019

Abstract
This paper investigates a possible relationship between the motivation and attitude of learners towards L2 in the
socio-cultural context of Australia. We used an explanatory mixed-methods approach and conducted a survey with 31 international
postgraduate TESOL students at a regional university in Australia. Then we conducted semi-structured interviews with six of the
students. The survey results suggest a relationship between the way a learner viewed Australian English and their motivation
towards L2. The motivational factors were Ideal L2 Self, Linguistic Self Confidence, Cultural Interest, Instrumentality
(Promotion) and Ought-to L2 Self. While all contributed to varying degrees in motivating the learners towards L2 learning, only
the first three interacted significantly with learners’ attitudes towards Australian English. Further, our interview data
highlight that the attitude of the learners with regard to their favorite language variety was based more on Australian English’s Inner
Circle status than its linguistic characteristics.
Study of turbulence intermittency in linear magnetized plasma
Authors: Zhang Boyu , Inagaki Shigeru , Hasamada Kazunobu , Yamasaki Kotaro , Kin Fumiyoshi , Nagashima Yoshihiko , Yamada Takuma , Fujisawa Akihide 
Published: September 2019

Abstract
The intermittent behavior of a quasi-coherent density fluctuation is observed in a laboratory plasma. The quasi-coherent fluctuation is localized but intermittent events are observed in the whole region of plasma. Conditional averaging shows the intermittent events propagate from the central region of the magnetized plasma column to the peripheral region. Auto-correlation function of fluctuations and Hurst analysis reveal the intermittency is highly auto-correlated and the Hurst parameter reaches to 0.8, indicating the existence of self-similar behavior and long-range time correlation, and self-organized criticality dynamics might be the mechanism. Cross-bicoherence between different radii shows the nonlinear coupling between the quasi-coherent fluctuation and ambient turbulence, which will contribute to the generation of intermittency of turbulence.
Phonon quarters-wave loss
Authors: Xiong Guohuan , Yu Zhizhou , Wang Jian-Sheng , Zhang Lifa 
Published: September 2019

Abstract
There has been a growing interest in the phase of phonon, due to the theoretical prediction (Phys. Rev. Lett. 115.11 (2015)) and the experimental observation (Science 359.6379 (2018)) of chiral phonons, which have different phases in different components. While half-wave loss is a well-known concept in optics, in this work, a series of plateaus of quarters-wave loss are first found for the reflected phonon across an interface by using an atomic junction model. These plateaus can be understood by the S-matrix in the system with time-reversal symmetry. If a phonon wave propagates from a low acoustic-impedance material (or a low cutoff frequency material) to a higher one in the long-wave limit (or in the high frequency limit), a half-wave loss takes place for the reflected phonon; however, the plateau of half-wave loss for reflected phonon occurs in the whole frequency domain if phonon transfers to a material with a larger spring constant. Besides the half-wave loss, we also observe plateaus of quarter-wave (three-quarters-wave) loss in long wave limit when the two leads with identical acoustic impedance are coupled by a weak (strong) coupling in comparison with the optimum thermal coupling. The quarters-wave loss for phonons can be applied to chiral phonon manipulation and other phononics devices.
Time-resolved CCD photometry and time-series analysis of the RR Lyrae type star RR Gem
Authors: Gohil Virabhadrasinh A. , Bhatnagar Sachchidanand Prakash 
Published: September 2019

Abstract
We present the results of a time-resolved photometric and time-series analysis of an RR Lyrae type star RR Gem. The main results are as follows: we found RR Gem’s pulsation period, 0.39689 d, and its V and I mean magnitudes, 11.277 (V) and 11.063 (I) mag respectively. We confirm its variability type as RRab/BL because it manifests the Blazhko effect, and it also exhibits asymmetric light curves (steep ascending branches), periods from 0.3 to 1.0 d and amplitudes from 0.3 to 2 mag in V. They are fundamental mode pulsators.
Optimal site selection for an optical-astronomical observatory in Pakistan using Multicriteria Decision Analysis
Authors: Daniyal  , Kazmi Syed Jamil Hassan 
Published: September 2019

Abstract
An astronomical observatory is the core component of any astronomical research facility that connects astronomers with their lab: the Cosmos. The research quality of an astronomical facility is rooted in the precision of data, collected by its observatory. For optimal performance, an observatory is sited while considering certain astronomical, environmental, geological and social parameters. This study aims to identify the potential sites in Pakistan for locating an optical-astronomical observatory using the Multicriteria Decision Analysis (MCDA) technique. The study uses the Analytic Hierarchy Process (AHP) for deriving the influence weights of nine evaluation criteria: Photometric Night Fraction; Night-time Sky Brightness; Sky Transparency; Aerosol Concentration; Altitude; Terrain Slope; Accessibility; Seismic Vulnerability; and Landuse/Land Cover. On the basis of experts’ opinions and previous studies, the evaluation criteria have been ordered in two possible preference sequences for identifying their influence weights with respect to each other for taking part in MCDA. Consequently, the process of MCDA identified certain areas with respect to each preference sequence, whereas some areas were found to be suitable according to both preference sequences. The study synchronizes the required eclectic data into an evaluationmatrix that augments the process of astronomical site selection. In the future, this study will be useful for astronomical societies and for furthering astronomical research in the country.
Systematic investigation of mid-term periodicity of the solar full-disk magnetic fields
Authors: Xiang Nan-Bin 
Published: September 2019

Abstract
The Magnetic Plage Strength Index (MPSI) and theMountWilson Sunspot Index (MWSI), which have been measured at Mount Wilson Observatory (MWO) since the 1970s and which indicate weak and strong magnetic field activity on the solar full disk, respectively, are used to systematically investigate midterm periodicities in the solar full-disk magnetic fields. Multitudinousmid-term periodicities are detected in MPSI and MWSI on timescales of 0.3 to 4.5 yr, and these periodicities are found to fluctuate around several typical periodicities within a small amplitude in different solar cycles or phases. The periodicity of 3.44 yr is found in MPSI, and the periodicities of 3.85 and 3.00 yr are detected in MWSI. Our analysis indicates that they reflect the true oscillating signals of solar magnetic field activity. The typical periodicities are 2.8, 2.3 and 1.8 yr in MPSI and MWSI, and possible mechanisms for these periodicities are discussed. A 1.3 yr periodicity is only detected in MPSI, and should be related to meridional flows on the solar surface. The typical annual periodicity of MPSI and MWSI is 1.07 yr, which is not derived from the annual variation of Earth’s heliolatitude. Several periodicities shorter than 1 yr found in MPSI and MWSI are considered to be Rieger-type periodicities.
Image Processing of Case Study of Solar Radio Burst Type III and Type IV Burst Using Sunpy
Authors: Hamidi Z. S. , Ramli N. , Shariff N. N. M. 
Published: September 2019

Abstract
Solar radio burst at low-frequency lies in the fact that they originate in the same layers of the solar atmosphere in which geo-effective disturbance probably originate Type III bursts have consistently the fastest drift rates of bursts at metric wavelengths and was created by an electron beam through plasma emission. Meanwhile, type IV burst is broadband quasi-continuum features associated with the decay phase of solar flares. A geomagnetic storm is a major disturbance of Earth’s magnetosphere that occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth. The aim of this study is to find out whether type III bursts preserved energy to solar bursts type IV thus led to the formation of geomagnetic storm. The solar radio burst type III and IV were observed by CALLISTO Spectrometer. CALLISTO is an acronym from Compound Astronomical Low cost Low frequency Instrument for Spectroscopy and Transportable Observatory. The Sunpy by Python was used to analyze the spectrogram image by eliminate the unwanted signal or noise in the image which is in the presence of noise, the spectrum gives inaccurate reading of frequency and time. Although the study did not show much correlation between bursts type IV and type III in producing these storms, there are several possible explanations from this result. It may be the case that solar events such as solar flare, CMEs and active region ejected from the solar disc is not heading towards Earth and the energy has eventually disperses into the interplanetary medium.
Molecular Engineering of Quinodimethane-based Dyes with Different Anchor Groups for Dye Sensitized Solar Cells (DSSCs)
Authors: Tang Jianhao , Gong Yun 
Published: September 2019

Abstract
This paper mainly works on changing different anchoring groups of quinodimethane-based dyes, which represent a twisting phenyl ring during the excitation process, for dye-sensitized solar cells (DSSCs). Five different groups, (1) cyanoacrylic acid (-CHC(CN)COOH), (2) carboxylic acid (-COOH), (3) pyridine (-C5H5N), (4) sulfonic acid (-SO3H), (5) phosphoric acid (-PO3H2), were adopted as anchors on the quinodimethane moieties forming dyes 1-5, to further explore their effects on optoelectronic properties via molecular engineering methods. Density functional theory (DFT) and time-dependent DFT (TD-DFT) were used to calculate their electronic structures and electro-optical properties. Computational results show that all dyes show suitable molecular orbital energy levels between the conductive band of TiO2 and the potentials I-/I3- redox couple so that all of 1-5 can be potential candidates for DSSCs application. Also, TDDFT results exhibit that dye 1 has the widest absorption band in UV-visible region, with the first excitation energies of 2.782 eV, while other dyes show similar first excitation energies about 0.2 eV higher than that of dye 1. In particular, dye 3 with pyridine as anchor group shows a very excellent charge transfer properties from the highest occupied molecular orbitals (HOMO) to the lowest unoccupied molecular orbitals (LUMO), with the highest HOMO level of -5.16 eV, which offers a strong driving force for dye regeneration, and a LUMO level of -2.36 eV, which enables excited electrons successfully to be injected in to titania film. Also, this pyridine anchor group offers a larger π conjugation, which may improve the ability of electron injecting and further strengthen the photovoltaic performance in DSSCs.
Experimental research of human evacuation in the case of a fire drill
Authors: Grigoraș Z C , Ibănescu M 
Published: September 2019

Abstract
The main purpose of this study is to analyze the human evacuation in the case of a fire drill by two different means: experimental research - “real fire drill” and numerical simulation - “virtual fire drill”.
The analyzed building can house a large number of people and its inner atrium can facilitate the spread of smoke and hot gases in the case of a real fire.
The evacuation drill was performed with about 50 students, located at the 2nd floor of the building, in two amphitheaters. They could evacuate themselves through two closed staircases to the ground floor of the building and then outside, through two exit doors.
The second purpose of this study is to establish, for the given case, if the used computer software can simulate the crowd movement and compute the travel times in accordance with the experimental research.
Another important subject is whether the computer software FDS+Evac - based on the CFD (Computational Fluid Dynamics) to simulate the crowd movement - can correctly identify the shortest escape path because one of the staircases, with its correspondent ground floor exit, is closer to the two analyzed amphitheaters.
Following the numerical analysis, it was concluded that for the considered scenario, the differences between the “real fire drill” and the “virtual fire drill” are acceptable from an engineering point of view.
FDS+Evac can simulate with high degree of credibility human movement in case of a fire drill.
Green roof influence over the characteristics of the linear thermal bridges
Authors: Baciu I-R , Isopescu D N , Taranu N , Maxineasa S G 
Published: September 2019

Abstract
Urban heat island (UHI) significantly affects the thermal-energy performance of the buildings. Moreover, urban materials absorb solar and infrared radiation, heat accumulation is dispersed in the atmosphere, a fact which increases air temperature. In this context, green roofs are the most suitable solution to resolve these vital issues. The expanding benefits of a green roof, such as energy saving, thermal insulation, and mitigating heat island effect emphasize the key role of this structure in overall thermal performance of buildings and microclimate conditions of indoor spaces. The main objective of the study is to analyse the influence of extensive green roof on the heat flow, in the thermal bridges developed structurally in buildings where they might replace the classical terrace roof. The influence is analysed through the comparison of the thermal impact of a classical terrace roof and that of an extensive green roof, through thermal characteristics of their components. The first part of the paper presents the structures of each type of roof and their thermic characteristics established and evaluated according to the normative regulation in force. In this context, the classical terrace roof and extensive green roof are examined from a thermic point of view, analysing the parameters of the types of thermal bridges usually met, in order to establish if the extensive green roof might have an influence on the overall heat flow. In conclusion, the unpredictable results obtained for the analysed thermal parameters let conclude that the extensive green roof solution presents a favourable environmental impact, promoting a “beautiful” added value to a building, in terms of both sustainability and aesthetics.
Seismic vulnerability of historical orthodox churches in Romania: numerical modelling and retrofit solutions
Authors: Bârnaure M , Coman M , Marcu D 
Published: September 2019

Abstract
Historical orthodox churches in Romania are generally masonry structures, built without a clear understanding of earthquake demands. Past earthquakes have shown specific damage patterns for these buildings: damages in domes and bell towers, damages of the church nave (particularly a general longitudinal dislocation), damages of the infrastructure. As some of the existing buildings have high architectural or historical value, their structural strengthening is important. Typical failure mechanisms for churches under earthquake loads are identified. Based on these mechanisms, the methods for assessing the seismic vulnerability of existing churches are discussed. A historical listed church is considered as case study. The considered numerical model is presented. Qualitative and quantitative results obtained from the numerical model for the un-retrofitted building are analysed. A retrofit solution is proposed. Comparisons are made between the expected structural behaviour of the church in its present state and after structural strengthening. Conclusions are drawn regarding the seismic vulnerability of this type of buildings.
Parametric FEM analysis of steel beam-to-column connection with extended end-plate and diagonal stiffeners
Authors: Stașcov M , Venghiac V M 
Published: September 2019

Abstract
Connection behaviour is the most important factor in the steel structures behaviour subjected to cyclic actions. To avoid formation of plastic hinges in the column, it is stiffened with additional diagonal stiffeners. This paper presents an FEM analysis of extended end-plate beam-to-column connections with diagonal stiffeners subjected to the cycling loading proposed by FEMA350/SAC protocol. Models were analysed with the ANSYS finite element analysis program. The study analyses the energy dissipation capacity, the stress and deformation state. The parameters are the direction of singular diagonal stiffeners, influence of crossing diagonal stiffeners and lack of stiffeners. The design of the connections is based on the strong column-weak beam principle.
Evaluation of the thermal performance of composite insulated panels with metallic skin through steady-state numerical analysis – Part 1
Authors: Măgurean A M 
Published: September 2019

Abstract
The energy performance of the buildings is a wide spreaded area on which many research is done nowadays. However, because of the relative new large scale interest on it, there still are subjects that have limited research data available. One of this topics is the thermal performance of composite insulated panels with metallic skin, usually a closure solution for industrial halls, production buildings, commercial buildings or even office buildings. Because of the mandatory request of the Energy Performance Certificates (EPCs) in the European countries and in Romania as well, is highlighted that is a lack of informations regarding the thermal behaviour of this type of technical solution and also, synthetic working data for building energy auditors, as linear thermal transmission coefficients values (Ψ-values) for the usually constructive details that compose a regular industrial hall is missing. Therefore, this paper aims to provide an insight about the thermal behaviour of this type of solution, by offering results of Ψ -values for four different dimensions of sandwich panels, which represents appropriate data for a thermal bridges catalogue that may be used directly by the building energy auditors.
Contributions to simulation of the non-permanent movement in sewerage collectors
Authors: Luca M , Luca A L , Scripcariu C F , Chirica S 
Published: September 2019

Abstract
The water movement of the sewer collectors is of a non-permanent type because of the variation in flow over time. Non-permanent movement in collectors is mathematically modelled by the Saint Venant equations. To solve the equation system, the characteristic method was used, provided that both equations are quasi-linear in the unknown h and Q. Non-dynamic contouring conditions are given by the hydraulic feature of the collectors / tanks located on the collector. Dynamic contour conditions are rendered by the collector-specific equations (river level effluent hydrograph, manoeuvring parameters of the boiler, manoeuvring characteristics at pumping stations, etc.). For the mathematical model implementation, a computational program was developed in the Matlab programming environment (Variation Gradual Collector Program). The program was used to simulate the non-permanent movement in the main sewerage collector “Cacaina” from the sewerage network of the city of Iasi. The simulation of the non-permanent movement was done in two collector evacuation scenarios (gravity and pumping). The analysis of the results obtained for scenario 2 highlights the differential operation of the eight collector sections separated by the side feeders. Simulation of the movement has highlighted the exceeding of the minimum and maximum values of the parameters imposed by the operating rules.