bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dengue virus seroprevalence study in Bangphae district, Ratchaburi, Thailand: A cohort study in 2012-2015
Authors: Limkittikul Kriengsak , Chanthavanich Pornthep , Lee Kang Sung , Lee Jung-Seok , Chatchen Supawat , Lim Sl-Ki , Arunsodsai Watcharee , Yoon In-Kyu , Lim Jacqueline Kyungah 
Published: January 2022

BackgroundTo determine the seroprevalence and transmission dynamics of dengue virus (DENV), age-stratified longitudinal serological surveys were conducted in Bangphae district, Ratchaburi province, Thailand, for 3 years between April 2012 and April 2015.MethodologyThe surveys enrolled 2012 healthy children and adults between 1 and 55 years-of-age, and a longitudinal serosurvey of six repeated bleeds of the same cohort of individuals was conducted every 8 months for the first 2 years (M0, M8, M16) and every half a year (M24, M30, M36) for the rest of the study period. All samples were tested using in-house indirect sandwich dengue IgG ELISA to determine DENV antibody titer, and 640 paired samples which showed rising of DENV IgG titers in paired serum were further tested using in-house neutralization assay, Plaque Reduction Neutralization Test (PRNT50).Principal findingsWhen compared against the gold standard based on the results of PRNT50, sensitivity and specificity of indirect ELISA were found to be both about 85%. The overall DENV IgG positivity determined by ELISA was 74.3% in 2012 and increased to 79.4% by the final sample collection in 2015. In our study sample, more than 98% of subjects older than 25 years were found to be seropositive. Among 518 IgG negative subjects at enrollment, the seroconversion rates were measured in paired bleeds; the rates (between successive visits, approximately 6 months) ranged between 4.8% (between M16 and M24) and 14.7% (between M0 and M8). The dominant serotype of primary DENV infection cases based on seroconversion was identified from the PRNT results and it was DENV-2.ConclusionsOur study documented high levels of seroprevalence and rate of transmission. Given the importance of the serostatus and disease burden in consideration for dengue vaccine introduction, our data could be used in decision-making on implementation of various dengue control and preventive measures.
Aggressive local treatment for recurrent intrahepatic cholangiocarcinoma—Stereotactic radiofrequency ablation as a valuable addition to hepatic resection
Authors: Braunwarth Eva , Schullian Peter , Kummann Moritz , Reider Simon , Putzer Daniel , Primavesi Florian , Stättner Stefan , Öfner Dietmar , Bale Reto 
Published: January 2022

Background
To evaluate the efficacy, safety and overall clinical outcome of local treatment for recurrent intrahepatic cholangiocellular carcinoma after hepatic resection.

Methods
Between 2007 and 2019 72 consecutive patients underwent hepatic resection for primary intrahepatic cholangiocellular carcinoma. If amenable, recurrent tumors were aggressively treated by HR or stereotactic radiofrequency ablation with local curative intent. Endpoints consisted of morbidity and mortality, locoregional and de novo recurrence, disease free survival, and overall survival.

Results
After a median follow-up of 28 months, recurrence of intrahepatic cholangiocellular carcinoma was observed in 43 of 72 patients undergoing hepatic resection (60.3%). 16 patients were subsequently treated by hepatic resection (n = 5) and stereotactic radiofrequency ablation (n = 11) with local curative intention. The remaining 27 patients underwent palliative treatment for first recurrence. Overall survival of patients who underwent repeated aggressive liver-directed therapy was comparable to patients without recurrence (p = 0.938) and was better as compared to patients receiving palliative treatment (p = 0.018). The 5-year overall survival rates for patients without recurrence, the repeated liver-directed treatment group and the palliative treatment group were 54.3%, 47.7% and 12.3%, respectively. By adding stereotactic radiofrequency ablation as an alternative treatment option, the rate of curative re-treatment increased from 11.9% to 37.2%.

Conclusion
Repeated hepatic resection is often precluded due to patient morbidity or anatomical and functional limitations. Due to the application of stereotactic radiofrequency ablation in case of recurrent intrahepatic cholangiocellular carcinoma, the number of patients treated with curative intent can be increased. This leads to favorable clinical outcome as compared to palliative treatment of intrahepatic cholangiocellular carcinoma recurrence.
Prevalence of overweight and obesity among Kuwaiti adolescents and the perception of body weight by parents or friends
Authors: Al-Haifi Ahmad R. , Al-Awadhi Balqees A. , Al-Dashti Yousef A. , Aljazzaf Badriyah H. , Allafi Ahmad R. , Al-Mannai Mariam A. , Al-Hazzaa Hazzaa M. 
Published: January 2022

Objective
Recently, the State of Kuwait has witnessed a steady rise in the prevalence of obesity among children and adolescents. The present study aims to provide an update on the rate of overweight or obesity among Kuwaiti adolescents and examines the associations between adolescents’ overweight/obesity levels and their perception of body weight as seen by parents or friends.

Methods
A cross-sectional study was conducted in Kuwaiti secondary schools and included adolescents between the ages of 15 and 18 years, using a multistage stratified random sampling method. Body weight and height were measured. A specifically designed self-report questionnaire was used to assess parents’ and friends’ perceptions of an adolescent’s body weight.

Results
A total of 706 adolescents were included the study. The prevalence of overweight or obesity among Kuwaiti adolescents reached nearly 50%, with males (54.3%) having a significantly higher overweight or obesity percentage than females (44.6%). No significant difference in the prevalence of obesity relative to age, from 15 to 18 years, was found. In addition, logistic regression analysis, adjusted for age and gender, revealed that adolescents perceived their parents (p = 0.011 and p < 0.001) or friends (p = 0.002 and p < 0.001) as more likely to classify their weight as overweight or obese, respectively.

Conclusion
Overweight or obesity levels appear to be high among Kuwaiti adolescents, and appears to have reached a plateau recently. Efforts to combat obesity and promote physical activity and healthy nutrition are needed. Future studies should seek to identify important moderators of parental and social underestimation/overestimation of children’s overweight or obesity.
SSOP Three-Dimensional Reconstruction of Tibia and Fibula for Applications in Biomechanical Fracture Models
Authors: Mejía Gallón Valentina , Naranjo Cardona María Camila , Ramírez Juan , Atehortua Carmona Juan , Santa-Marin Juan Felipe , Vallejo Pareja Samuel , Posada Viviana Marcela 
Published: January 2022

Context: Non-fatal injuries represent a public health issue. Among them, lower limb fractures have a large impact on the costs related to orthopedic treatments. In this work, a three-dimensional reconstruction of the tibia and fibula was performed for biomechanical applications with the purpose of defining the 3D reconstruction parameters that allow reducing patients’ radiation exposure and computational costs.
Method: For the 3D reconstruction, a computerized tomography taken from a volunteer was used, as well as two software applications specialized in DICOM image reconstruction (Mimics Research and 3DSlicer). The number of images included in the volume was modified, and the results were compared. The quality of the reconstructed volumes was verified by comparing the reference volume reconstructed with the total number of images/slices vs. the modified volumes. The MeshLab software was used for this purpose. The analyzed parameters were the distance differences between the reference and the alternative models, as well as the qualitative curvature analysis.
Results: The ANOVA results for the Max (maximum distance between meshes) response shows that software and slices are significant factors. However, the software-slices interaction did not have a significant influence. As for the RMS (root mean square) distance response, software, slices, and the software-slices interaction are not significant. For the Mean distance response, slices and the software-slices interaction are not significant. Nevertheless, software significantly influences the response. These results suggest a potential way to reduce the computational cost and the patient’s radiation exposure in future biomechanical and preoperatory analyses, since the same quality can be obtained by including fewer 2D images in the reconstruction.
Conclusions: The reconstructed surfaces are smoother when Mimics is used, even though the same smoothness factor was employed in both software applications during the reconstruction. When 16 slices are used (retained every 16 images from the complete original model), the distance differences increased for both bones (tibia and fibula). For the RMS, reducing the number of slices and using either one of the two applications analyzed would not show any significant differences in the reconstruction, thus allowing the potential reduction of radiation exposure of the patient.
Acknowledgements: The authors are grateful to Universidad Nacional de Colombia for funding the project “Estado de esfuerzos en un elemento de osteosíntesis en la consolidación de una fractura de miembro inferior”.
Extraordinary Passive Safety in Cars Using a Sensor Network Model
Authors: Ruiz Castilla José Sergio , García Lamont Farid 
Published: January 2022

Context: The automobile industry has included active and passive safety. Active safety incorporates elements to avoid crashes and collisions. Some elements are ABS brakes and stabilization bars, among others. On the other hand, passive safety avoids or minimizes damage to the occupants in the event of an accident. Some passive safety features include seat belts and front and curtain airbags for the driver and other occupants. Method: In this research work, we propose a new category called Extraordinary Passive Safety (XPS). A model of a sensor network was designed to inspect the conditions inside the car to detect fire, smoke, gases, and extreme temperatures. The sensors send data to a device (DXPS) capable of receiving and storing the data. Results: Each sensor collects data and sends it to the DXPS every period. The sensor sends 0s while there is no risk, and 1s when it detects a risk. When the DXPS receives a 1, the pattern is evaluated, and the risk is identified. Since there are several sensors, the reading pattern is a set of 0s (000000). When a pattern with one or more 1s (000100, 010101) is received, the DXPS can send an alert or activate a device. Conclusions: The proposed solution could save the lives of children left in the car or people trapped when the car catches fire. As future work, it is intended to define the devices to avoid or minimize damage to the occupants such as oxygen supply, gas extraction, regulating the temperature, among others.
Exponentially fitted difference scheme for singularly perturbed mixed integro-differential equations
Authors: Cakir Musa , Gunes Baransel 
Published: January 2022

Abstract
In this study, singularly perturbed mixed integro-differential equations (SPMIDEs) are taken into account.
First, the asymptotic behavior of the solution is investigated.
Then, by using interpolating quadrature rules and an exponential basis function, the finite difference scheme is constructed on a uniform mesh.
The stability and convergence of the proposed scheme are analyzed in the discrete maximum norm.
Some numerical examples are solved, and numerical outcomes are obtained.
Reactions at the molten flux-weld pool interface in submerged arc welding
Authors: Coetsee Theresa , De Bruin Frederik 
Published: January 2022

Abstract
In submerged arc welding (SAW) of chromium (Cr) containing steels, Cr is usually added to the weld metal from the weld wire, and not from the welding flux. Manufacturing of weld wires of specific compositions is expensive and time consuming and cannot closely match all the desired alloy compositions. Therefore, the weld wire chemistry is usually over matched to the base plate composition. Better matching between the weld metal and base plate is possible if the weld metal incorporates Cr from Cr containing metal powder, instead of sourcing Cr from weld wire of limited Cr content. Because Cr is easily oxidised, the oxygen partial pressure in SAW must be controlled. This work illustrates the control of the oxygen potential at the molten flux-weld pool interface by using aluminium (Al) powder addition. The controlled oxygen potential at the molten flux-weld pool interface ensures increased Cr powder transfer into the weld pool, without interfering with oxygen transfer from the plasma arc to the weld pool. The objective of this work is to use targeted powder additions to better control Cr reactions in SAW to improve Cr metal transfer to the weld metal and maintain an acceptable level of oxygen in the weld metal.
Zeta functions of the 3-dimensional almost-Bieberbach groups
Authors: Sulca Diego 
Published: January 2022

Abstract
The subgroup zeta function and the normal zeta function of a finitely generated virtually nilpotent group can be expressed as finite sums of Dirichlet series admitting Euler product factorization.
We compute these series except for a finite number of local factors when the group is virtually nilpotent of Hirsch length 3.
We deduce that they can be meromorphically continued to the whole complex plane and that they satisfy local functional equations.
The complete computation (with no exception of local factors) is presented for those groups that are also torsion-free, that is, for the 3-dimensional almost-Bieberbach groups.
Nanofabrication route to achieve sustainable production of next generation defect-free graphene: analysis and characterisation
Authors: Misra Shikhar , Katiyar Nirmal Kumar , Kumar Arvind , Goel Saurav , Biswas Krishanu 
Published: January 2022

Abstract
In the past two decades, graphene has been one of the most studied materials due to its exceptional properties. The scalable route to cost-effective manufacture defect-free graphene has continued to remain a technical challenge. Intrinsically defect-free graphene changes its properties dramatically, and it is a challenging task to control the defects in graphene production using scaled-down subtractive manufacturing techniques. In this work, the exfoliation of graphite was investigated as a sustainable low-cost graphene manufacturing technique. The study made use of a simple domestic appliance e.g., a kitchen blender to churn graphene in wet conditions by mixing with N-Methyl-2-pyrrolidone (NMP). It was found that the centrifugal force-induced turbulent flow caused by the rotating blades exfoliates graphite flakes to form graphene. The technique is endowed with a high yield of defect-free graphene (0.3 g/h) and was deemed suitable to remove 10% fluoride content from the water and color absorption from fizzy drinks.
Unveiling radial breathing mode in a particle-on-mirror plasmonic nanocavity
Authors: Wang Qifa , Li Chenyang , Hou Liping , Zhang Hanmou , Gan Xuetao , Liu Kaihui , Premaratne Malin , Xiao Fajun , Zhao Jianlin 
Published: January 2022

Abstract
Plasmonic radial breathing mode (RBM), featured with radially oscillating charge density, arises from the surface plasmon waves confined in the flat nanoparticles. The zero net dipole moment endows the RBM with an extremely low radiation yet a remarkable intense local field. On the other hand, owing to the dark mode nature, the RBMs routinely escape from the optical measurements, severely preventing their applications in optoelectronics and nanophotonics. Here, we experimentally demonstrate the existence of RBM in a hexagonal Au nanoplate-on-mirror nanocavity using a far-field linear-polarized light source. The polarization-resolved scattering measurements cooperated with the full-wave simulations elucidate that the RBM originates from the standing plasmon waves residing in the Au nanoplate. Further numerical analysis shows the RBM possesses the remarkable capability of local field enhancement over the other dark modes in the same nanocavity. Moreover, the RBM is sensitive to the gap and nanoplate size of the nanocavity, providing a straightforward way to tailor the wavelength of RBM from the visible to near-infrared region. Our approach provides a facile optical path to access to the plasmonic RBMs and may open up a new route to explore the intriguing applications of RBM, including surface-enhanced Raman scattering, enhanced nonlinear effects, nanolasers, biological and chemical sensing.
Cascaded microsphere-coupled surface-enhanced Raman spectroscopy (CMS-SERS) for ultrasensitive trace-detection
Authors: Mi Yanlin , Yan Yinzhou , Wang Mengyuan , Yang Lixue , He Jing , Jiang Yijian 
Published: January 2022

Abstract
Surface-enhanced Raman spectroscopy (SERS) has been widely investigated and employed as a powerful optical analytical technique providing fingerprint vibrational information of molecules with high sensitivity and resolution. In addition to metallic nanostructure, dielectric micro-/nano-structures with extraordinary optical manipulation properties have demonstrated capability in enhanced Raman scattering with ultralow energy losses. Here we report a facile cascaded structure composed of a large microsphere (LMS) and a small microsphere array with Ag nanoparticles as a novel hybrid SERS substrate, for the first time. The cascaded microsphere-coupled SERS substrate provides a platform to increase the molecular concentration, boost the intensity of localized excitation light, and direct the far-field emission, for giant Raman enhancement. It demonstrates the maximum enhancement factor of Raman intensity greater than 108 for the limit of detection down to 10−11 M of 4-nitrothiphenol molecules in aqueous solution. The present work inspires a novel strategy to fabricate cascaded dielectric/metallic micro-/nano-structures superior to traditional SERS substrates towards practical applications in cost-effective and ultrahigh-sensitive trace-detection.
Crystal structure of bis((1-methylbenzimidazol-2-yl)methyl)amine, C18H19N5
Authors: Gaoxiang Meng , Yang Yongming , Li Qiang , Li Zhou 
Published: January 2022

Abstract
C18H19N5, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 6.612(4) Å, b = 8.800(5) Å, c = 13.777(8) Å, α = 83.219(7)°, β = 79.329(6)°, γ = 78.744(6)°, V = 769.8(8) Å3, Z = 2, R

gt
(F) = 0.0394, wR

ref
(F
2) = 0.0996, T = 100(2) K.
The role of semiotics in the unification of langue and parole: anAgentive Cognitive Construction Grammarapproach to English modals
Authors: Torres-Martínez Sergio 
Published: January 2022

AbstractThis article introducesAgentive Cognitive Construction Grammar, an emerging field that seeks to connect the linguistic system with speaker-meaning. The stated purpose is thus to tackle a pervasive disconnect in both cognitive linguistics and construction grammar, whereby the linguistic system (langue) and speaker selections (parole) are separated in the belief that language is essentially a mental process associated with the brain, and hence, separated from bodily experience. I contend this view by introducing a triadic model of construction (based on the Peircean sign) in which form and function are inextricably bound up withagency. This is possible because language is tethered to senses of movement and balance that connect experiences with the physical world with the mental. A major insight of the paper is that argument structure constructions partake of both linguistic and non-linguistic signs, which provides speakers with a means to verbalize their thoughts and distribute agency in specific events.
Európai Újraélesztési Társaság (ERC) 2021. évi, alapszintű újraélesztésről (BLS) szóló ajánlásának(1) összefoglaló bemutatása
Authors: Priskin Gábor , Schiszler Bence , Pandur Attila , Tóth Balázs , Betlehem József , Radnai Balázs 
Published: January 2022

A World Health Organization (WHO) 2019-es, legújabb, globális halálozási adatai(2) szerint a világon továbbra is vezető halálokként jelölhetők meg az iszkémiás szívbetegségek. Ezen kórfolyamatok gyakran okoznak keringésmegállást, mely hátterében leginkábba szívet ellátó erek károsodása, arteriosclerosisa, atherosclerosisa, vagy zsíros plakkosodása állhat. Ugyancsak kialakulhat arreszt állapot a szívizom iszkémia miatti károsodásból, megvastagodott szívizomzat következményeként, és malignus ritmuszavarokból fakadóan. Az előjelek nélküli, hírtelen bekövetkező szívhalál (SCA) kóroka 80%-ban koronária betegeségből kialakuló esemény, minek bizonyítására sokszor csak a pathológiai diagnózis alkalmas(3). A szívmegállás terápiája alapszinten a kardiopulmonális eszuszcitáció (CPR) illetve a félautomata külső defi brillátorral (AED) történő defi brilláció, ugyanis a keringésmegállások nagyjából harmadában kamrafi brilláció (VF) áll fenn(4). Számos kutatás számolt be arról, hogy a laikusok által megkezdett CPR jelentősen képes növelni a betegek túlélési esélyeit(5).
The Exotic in Nineteenth-Century French Opera, Part 1: Locales and Peoples
Authors: Locke Ralph P. 
Published: January 2022

Nineteenth-century French opera is renowned for its obsession with “the exotic”—that is, with lands and peoples either located far away from “us” Western Europeans or understood as being very different from us. One example: hyper-passionate Spaniards and “Gypsies” in Bizet’s Carmen. Most discussions of the role that the exotic plays in nineteenth-century French opera focus on a few standard-repertory works (mainly serious in nature), rather than looking at a wider range of significant works performed at the time in various theaters, including the Opéra, the Opéra-Comique, and Offenbach’s Bouffes-Parisiens.
The present article attempts to survey the repertory broadly. Part 1 examines various “different” (or Other) lands and peoples frequently represented on stage in French operas. Part 2 discusses typical plots and character types found in these operas (sometimes regardless of the particular exotic land that was chosen) and concludes by exploring the musical means that were often employed to impel the drama and to convey the specific qualities of the people or ethnic group being represented. These musical means could include special or unusual traits: either all-purpose style markers of the exotic generally or more specific style markers associated with identifiable peoples or regions. But the musical means could also include any of the rich fund of devices that opera composers normally used when creating drama and defining character: melodic, harmonic, structural, and so on. This last point is often neglected or misunderstood in discussions of “the exotic in music,” which tend instead to focus primarily on elements that indisputably “point to” (as if semiotically) the specific land or people that the work is seeking to evoke or represent.
In both Parts 1 and 2, instances are chosen from works that were often quite successfully performed at the time in French-speaking regions and that, even if little known today, can at least be consulted through recordings or videos. The works come from the standard recognized operatic genres: five-act grands opéras, three-act opéras-comiques, and short works in bouffe style. The composers involved include (among others) Adam, Auber, Berlioz, Bizet, Chabrier, Cherubini, Clapisson, Félicien David, Delibes, Flotow, Gomis, Gounod, Halévy, Messager, Meyerbeer, Hippolyte Monpou, Offenbach, Ernest Reyer, Saint-Saëns, Ambroise Thomas, and Verdi (Les vêpres siciliennes, Don Carlos).
Examining certain lesser-known works reveals merits that have gone relatively unheralded. As for the better-known works, approaching them in this wide-angled way grants us a richer appreciation of their strengths and their often-enlivening internal contradictions.