bluuebunny/crossref_metadata_2025_split huggingface dataset:
Guanidinylated SBA-15/Fe3O4 mesoporous nanocomposite as an efficient catalyst for the synthesis of pyranopyrazole derivatives
Authors: Hassanzadeh-Afruzi Fereshte , Asgharnasl Somayeh , Mehraeen Sara , Amiri-Khamakani Zeinab , Maleki Ali 
Published: October 2021

AbstractIn this study, a novel mesoporous nanocomposite was fabricated in several steps. In this regard, SBA-15 was prepared by the hydrothermal method, next it was magnetized byin-situpreparation of Fe3O4MNPs. After that, the as-prepared SBA-15/Fe3O4functionalized with 3-minopropyltriethoxysilane (APTES) via post-synthesis approach. Then, the guanidinylated SBA-15/Fe3O4was obtained by nucleophilic addition of APTES@SBA-15/Fe3O4to cyanimide. The prepared nanocomposite exhibited excellent catalytic activity in the synthesis of dihydropyrano[2,3-c]pyrazole derivatives which can be related to its physicochemical features such as strong basic sites (presented in guanidine group), Lewis acid site (presented in Fe3O4), high porous structure, and high surface area. The characterization of the prepared mesoporous nanocomposite was well accomplished by different techniques such as FT-IR, EDX, FESEM, TEM, VSM, TGA, XRD and BET. Furthermore, the magnetic catalyst was reused at least six consequent runs without considerable reduction in its catalytic activity.
The effect of non-surgical and surgical mechanical root debridement on infrabony defects: a retrospective study
Authors: Majzoub Jad , Salami Ali , Barootchi Shayan , Tavelli Lorenzo , Chan Hsun-Liang , Wang Hom-Lay 
Published: October 2021

AbstractThe aim of this retrospective study was to assess the outcomes of non-surgical and surgical mechanical root debridement for the treatment of infrabony defects and explore potential prognostic factors. Treated infrabony defects followed for at least 1 year were selected. All data pertaining to the clinical outcomes were recorded. Multi-level regression analysis and Cox Proportional-Hazards Models were used to assess the immediate (3–6 months) clinical outcomes, survival of the treated teeth, and factors influencing these results. 132 patients were included in the analysis. The analysis showed 1.42 ± 1.71 and 2.23 ± 1.64 mm in pocket depth (PD) reduction, 0.13 ± 1.83 and 0.08 ± 1.76 mm in clinical attachment level (CAL) gain, and 1.29 ± 1.56 and 2.15 ± 1.33 mm increase in gingival recession (REC) for the non-surgical and surgical groups, respectively. The 5-year survival rates were 93% for the non-surgically and 90% for the surgically treated teeth. Several factors affected clinical outcomes and tooth survival. Within its limitations, the treatment of infrabony defects with non-surgical and surgical mechanical root debridement was found to result in moderate but significant PD reduction, nevertheless, this may also be attributable to the resultant REC.
CTHRC1 expression is a novel shared diagnostic and prognostic biomarker of survival in six different human cancer subtypes
Authors: Sial Nuzhat , Ahmad Mukhtiar , Hussain Muhammad Safdar , Iqbal Muhammad Junaid , Hameed Yasir , Khan Mehran , Abbas Mustansar , Asif Rizwan , Rehman Jalil Ur , Atif Muhammad , Khan Muhammad Rashid , Hameed Zahid , Saeed Hina , Tanveer Rida , Saeed Saba , Sharif Aneeqa , Asif Hafiz Muhammad 
Published: October 2021

AbstractAccording to the previous reports, the collagen triple helix repeat containing 1 (CTHRC1) causes tumorigenesis by modulating the tumor microenvironment, however, the evidence is limited to a few human cancer subtypes. In the current study, we analyzed and validated the CTHRC1 expression variations in 24 different human cancer tissues paired with normal tissues using publically available databases. We observed that CTHRC1 was overexpressed in all the 24 major subtypes of human cancers and its overexpression was significantly associated with the reduced overall survival (OS) duration of head and neck squamous cell carcinoma (HNSC), kidney renal clear cell carcinoma (KIRC), liver hepatocellular carcinoma (LIHC), Lung adenocarcinoma (LUAD), stomach adenocarcinoma (STAD), and Uterine corpus endometrial carcinoma (UCEC). This implies that CTHRC1 plays a significant role in the development and progression of these cancers. We further noticed that CTHRC1 was also overexpressed in HNSC, KIRC, LIHC, LUAD, STAD, and UCEC patients of different clinicopathological features. Pathways enrichment analysis revealed the involvement of CTHRC1 associated genes in seven diverse pathways. We also explored few interesting correlations between CTHRC1 expression and promoter methylation, genetic alterations, CNVs, CD8+ T immune cells infiltration, and tumor purity. In conclusion, CTHRC1 can serve as a shared diagnostic and prognostic biomarker in HNSC, KIRC, LIHC, LUAD, STAD, and UCEC patients of different clinicopathological features.
A super-grayscale and real-time computer-generated Moiré profilometry using video grating projection
Authors: Li Hongmei , Cao Yiping , Wan Yingying , Li Chengmeng , Xu Cai , Zhang Hechen , An Haihua 
Published: October 2021

AbstractBy using the time-division multiplexing characteristics of the projector and the integral exposure characteristics of the charge coupled device (CCD) camera, a super-grayscale and real-time computer-generated Moiré profilometry based on video grating projection is proposed. The traditional digital static grating is of 256-grayscale at most. If an expected super-grayscale grating with a maximum grayscale of 766 is designed and divided into three 256-grayscale fringe patterns with balanced grayscale as far as possible, they can be synthesized into a repeated playing video grating instead of the traditional static grating. When the video grating is projected onto the measured object, as long as the exposure time is set to three times the refresh cycle of the video grating, the super-grayscale deformed patterns in the 766-grayscale can be captured with a 10-bit CCD camera, so that the deformed patterns are realistic. The digital error in computer-generated Moiré profilometry is effectively reduced. In addition, this method can expand the linear range of the deformed pattern by 20% in computer Moiré profilometry. Therefore, the proposed method has the perspectives of high accuracy and real-time measurement. Theoretical analysis and experimental results demonstrate the validity and capability of the proposed method.
An Initial Investigation Into the Feasibility of the Communication Matrix Professional Development Program for Educational Professionals Working With Students With Complex Communication Needs
Authors: Quinn Emily D. , Cook Alexandria , Wiedrick Jack , Rowland Charity 
Published: October 2021

Purpose
The goal of this study was to investigate the initial feasibility of the Communication Matrix Professional Development Program (CMPDP), an online program created to help educational professionals teaching students with complex communication needs.

Method

A one-group pretest–posttest design was employed with 102 educational professionals and their students with complex communication needs. Students (
M
age
= 12.5 years,
SD
= 4.8 years) had severe expressive communication impairments characterized by an expressive vocabulary of < 10 words. The online CMPDP included webinars, coursework, and engagement with an online community of practice. We examined the students' expressive communication skills measured by the Communication Matrix Assessment and Individualized Education Program (IEP) goal quality measured by the Design to Learn IEP Goal Development Guide before and after their teachers and speech-language pathologists participated in the intervention.

Results

Students showed small but significant increases on the Communication Matrix Assessment. The average increase in scores was 10.6,
z
= 5.37, 95% confidence interval (CI; [6.65, 14.54]), Glass's delta = 0.37. The mean gain in scores for IEP quality was not significant (0.82,
z
= 2.43, 95% CI [0.14, 1.49], Glass's delta = 0.28).

Conclusions
Results demonstrate the initial feasibility of the CMPDP for educational professionals and their students with complex communication needs. Findings must be interpreted cautiously as the study design has methodological limitations including lack of a control condition and a potential for correlated measurement error and demand characteristics.

Supplemental Material

https://doi.org/10.23641/asha.16734553
“Two Friends Spending Time Together”: The Impact of Video Visual Scene Displays on Peer Social Interaction for Adolescents With Autism Spectrum Disorder
Authors: Babb Salena , McNaughton David , Light Janice , Caron Jessica 
Published: October 2021

Purpose
Social interaction poses many challenges for adolescents with autism spectrum disorder (ASD) and complex communication needs. The purpose of this study was to investigate the impact of video visual scene displays (video VSDs) on communication during interactions between adolescents with ASD and peer partners.

Method
This study used an across-participant multiple-baseline single-case experimental design. Four adolescents with ASD and complex communication needs were taught to use video VSDs, presented on a tablet-based app, during social interactions with peer partners in a high school setting. The video VSDs used during the interactions were selected (and programmed with vocabulary) based on the interests of the adolescent with ASD and their peer partner.

Results

Following the introduction of the video VSD intervention, all four adolescents with ASD demonstrated an increase in communicative turns compared to baseline (Tau-
U
= 1.0, 95% CI [0.56, 1]), and all four increased in modes of communication used. Increased use of speech also was observed for the three participants who made use of speech prior to the intervention. All participants with ASD (and their peer partners) expressed an interest in continued use of the video VSD app to support social interaction.

Conclusion
The use of video VSDs may be a viable option to increase the participation and communication of adolescents with ASD during social interactions with peer partners.

Supplemental Material

https://doi.org/10.23641/asha.16734532
Blind detection of cyclostationary signals based on multi‐antenna beamforming technology
Authors: Wang Jie , Gao Rui , Ye Ding , Zhang Zhenghua 
Published: October 2021

AbstractCyclostationary feature detection is one of the widely used spectrum sensing techniques. Its greatest advantage is that it can effectively separate the signal from the noise under the condition of a low signal‐noise ratio (SNR). Although cyclostationary feature detection is not affected by noise uncertainty like energy detection (ED), conventional cyclic stationary feature detection needs to know the prior conditions of signal cycle frequency (CF), cycle period, and so on. Moreover, the communication signals of authorized users are generally weak, which greatly affects the detection efficiency of cyclic stationary features. Therefore, this paper proposes a blind detection technique of cyclostationary characteristics based on conventional beam synthesis multi‐antenna. The principle is to enhance the signal receiving intensity of the antenna by using beamforming technology, and realize the blind detection of cyclostationary signals by forming the direction of arrival angle. Not only that, the authors also make full use of the Wilk's approximation theorem and the generalized likelihood ratio test (GLRT) to derive the detection probability and false alarm probability. The simulation results show that the proposed cyclic stationary signal detector based on beam synthesis multi‐antenna can realize blind detection of unknown cycle signals in a low SNR environment.
Compact eighth‐mode ridged substrate integrated waveguide filter
Authors: Liu Liguo , Huang Liwen 
Published: October 2021

AbstractIn this letter, a novel eighth‐mode ridged substrate integrated waveguide (EMRSIW) is proposed by bisecting the RSIW resonator along the virtual magnetic walls. The EMRSIW shows a size of nearly one‐eighth of a conventional RSIW resonator and a significant size reduction compared to the conventional eighth‐mode SIW resonator. A prototype of a third‐order bandpass filter with transmission zeros has been designed and tested.
Design of compact microstrip bandpass filter with two switchable operating passbands
Authors: Chen Chi‐Feng , Tseng Hsin‐Ya , He Yi‐Hua , Li Wen‐Jie 
Published: October 2021

AbstractA new bandpass filter (BPF) with two switchable operating passbands has been proposed. The BPF topology is formed by switchable resonators and stepped‐impedance resonators. The two operating bands can be switched on and off independently. For verification, a switchable BPF with a third‐order Chebyshev bandpass response was designed and fabricated using microstrip technology. The developed BPF was measured to verify the predicted and simulated results. A close agreement was observed between them. The proposed switchable BPF has good in‐band and out‐of‐band performances. Besides, the attenuation is > 30 dB as the passband is switched off.
Simulations of radio-wave anisotropic scattering to interpret type III radio burst data from Solar Orbiter, Parker Solar Probe, STEREO, and Wind
Authors: Musset S. , Maksimovic M. , Kontar E. , Krupar V. , Chrysaphi N. , Bonnin X. , Vecchio A. , Cecconi B. , Zaslavsky A. , Issautier K. , Bale S. D. , Pulupa M. 
Published: October 2021

Aims. We use multi-spacecraft observations of individual type III radio bursts to calculate the directivity of the radio emission. We compare these data to the results of ray-tracing simulations of the radio-wave propagation and probe the plasma properties of the inner heliosphere.
Methods. We used ray-tracing simulations of radio-wave propagation with anisotropic scattering on density inhomogeneities to study the directivity of radio emissions. Simultaneous observations of type III radio bursts by four widely separated spacecraft were used to calculate the directivity and position of the radio sources. The shape of the directivity pattern deduced for individual events is compared to the directivity pattern resulting from the ray-tracing simulations.
Results. We show that simultaneous observations of type radio III bursts by four different probes provide an opportunity to estimate the radio source positions and the directivity of the radio emission. The shape of the directivity varies from one event to another and it is consistent with anisotropic scattering of the radio waves.
Magnetic reconnection as a mechanism to produce multiple thermal proton populations and beams locally in the solar wind
Authors: Lavraud B. , Kieokaew R. , Fargette N. , Louarn P. , Fedorov A. , André N. , Fruit G. , Génot V. , Réville V. , Rouillard A. P. , Plotnikov I. , Penou E. , Barthe A. , Prech L. , Owen C. J. , Bruno R. , Allegrini F. , Berthomier M. , Kataria D. , Livi S. , Raines J. M. , D’Amicis R. , Eastwood J. P. , Froment C. , Laker R. , Maksimovic M. , Marcucci F. , Perri S. , Perrone D. , Phan T. D. , Stansby D. , Stawarz J. , Toledo-Redondo S. , Vaivads A. , Verscharen D. , Zouganelis I. , Angelini V. , Evans V. , Horbury T. S. , O’Brien H. 
Published: October 2021

Context.Spacecraft data revealed early on the frequent observation of multiple near-thermal proton populations in the solar wind. Decades of research on their origin have focused on processes such as magnetic reconnection in the low corona and wave-particle interactions in the corona and locally in the solar wind.Aims.This study aims to highlight the fact that such multiple thermal proton populations and beams are also produced by magnetic reconnection occurring locally in the solar wind.Methods.We used high-resolution Solar Orbiter proton velocity distribution function measurements, complemented by electron and magnetic field data, to analyze the association of multiple thermal proton populations and beams with magnetic reconnection during a period of slow Alfvénic solar wind on 16 July 2020.Results.At least six reconnecting current sheets with associated multiple thermal proton populations and beams, including a case of magnetic reconnection at a switchback boundary, were found on this day. This represents 2% of the measured distribution functions. We discuss how this proportion may be underestimated, and how it may depend on solar wind type and distance from the Sun.Conclusions.Although suggesting a likely small contribution, but which remains to be quantitatively assessed, Solar Orbiter observations show that magnetic reconnection must be considered as one of the mechanisms that produce multiple thermal proton populations and beams locally in the solar wind.
Variation of the stellar color in high-magnification and caustic-crossing microlensing events
Authors: Sajadian S. , Jørgensen U. G. 
Published: October 2021

Context. To a first approximation, the microlensing phenomenon is achromatic and great advancements have been achieved with regard to the interpretation of the achromatic signals, leading to the discovery and characterization of well above 100 new exoplanets. At a higher order accuracy in the observations, microlensing has a chromatic component (a color term) that has thus far been explored to a much lesser extent.
Aims. Here, we analyze the chromatic microlensing effect of four different physical phenomena, which have the potential to contribute key knowledge of the stellar properties that is not easily achievable with other methods of observation. Our simulation is limited to the case of main-sequence source stars.
Methods. Microlensing is particularly sensitive to giant and sub-giant stars near the Galactic center. While this population can be studied in short snapshots by the largest telescopes in the world, a general monitoring and characterization of the population can be achieved by use of more accessible medium-sized telescopes with specialized equipment via dual-color monitoring from observatories at sites with excellent seeing. We limit the results of this study to what will be achievable from the Danish 1.54 m telescope at La Silla observatory based on the use of the existing dual-color lucky imaging camera. Such potential monitoring programs of the bulge population from medium-sized telescopes include the characterization of starspots, limb-darkening, the frequency of close-in giant planet companions, and gravity darkening for blended source stars.
Results. We conclude our simulations with quantifying the likelihood of detecting these different phenomena per object where they are present to be ~60 and ~30% for the above-mentioned phenomena when monitored during both high-magnification and caustic crossings, respectively.
Gas phase Elemental abundances in Molecular cloudS (GEMS) V. Methanol in Taurus
Authors: Spezzano S. , Fuente A. , Caselli P. , Vasyunin A. , Navarro-Almaida D. , Rodríguez-Baras M. , Punanova A. , Vastel C. , Wakelam V. 
Published: October 2021

Context. Methanol, one of the simplest complex organic molecules in the interstellar medium, has been shown to be present and extended in cold environments such as starless cores. Studying the physical conditions at which CH3OH starts its efficient formation is important to understand the development of molecular complexity in star-forming regions.
Aims. We aim to study methanol emission across several starless cores and investigate the physical conditions at which methanol starts to be efficiently formed, as well as how the physical structure of the cores and their surrounding environment affect its distribution.
Methods. Methanol and C18O emission lines at 3 mm have been observed with the IRAM 30 m telescope within the large programme Gas phase Elemental abundances in Molecular CloudS towards 66 positions across 12 starless cores in the Taurus Molecular Cloud. A non-LTE (local thermodynamic equilibrium) radiative transfer code was used to compute the column densities in all positions. We then used state-of-the-art chemical models to reproduce our observations.
Results. We have computed N(CH3OH)/N(C18O) column density ratios for all the observed offsets, and the following two different behaviours can be recognised: the cores where the ratio peaks at the dust peak and the cores where the ratio peaks with a slight offset with respect to the dust peak (~10 000 AU). We suggest that the cause of this behaviour is the irradiation on the cores due to protostars nearby which accelerate energetic particles along their outflows. The chemical models, which do not take irradiation variations into account, can reproduce the overall observed column density of methanol fairly well, but they cannot reproduce the two different radial profiles observed.
Conclusions. We confirm the substantial effect of the environment on the distribution of methanol in starless cores. We suggest that the clumpy medium generated by protostellar outflows might cause a more efficient penetration of the interstellar radiation field in the molecular cloud and have an impact on the distribution of methanol in starless cores. Additional experimental and theoretical work is needed to reproduce the distribution of methanol across starless cores.
Aide de l’imagerie 3D pour le diagnostic d’une Classe II asymétrique
Authors: Petitpas Laurent , Harter Hugo 
Published: October 2021

Depuis maintenant plusieurs années, nous pouvons compter sur l’utilisation des outils numériques d’imagerie 3D pour affiner un diagnostic orthodontique qui se veut de plus en plus précis.
Ces différents outils 3D permettent de mettre en évidence de manière plus importante les dysmorphoses, notamment en visualisant le siège de nombreuses asymétries, et ce grâce à la réalisation de superpositions 3D des empreintes optiques et des enregistrements de CBCT (Cone Beam Computed Tomography).
Cet article montre de nombreuses possibilités quant à la visualisation d’un patient virtualisé en 3D présentant une Classe II asymétrique dentaire et diverses dysmorphoses.
Sicherer Babyschlaf: Europäische Empfehlungen auf dem Prüfstand
Authors: Singer Dominique 
Published: October 2021

Liebe Leserinnen und Leserdas „Bed-sharing“, mitunter auch als „Co-sleeping“ bezeichnet, also der gemeinsame Schlaf von Mutter/Vater und Kind (<1 Jahr) im gleichen Bett, gilt – unter anderem wegen der drohenden Behinderung der freien Atmung – als Risikofaktor für den plötzlichen Säuglingstod, sodass in vielen Empfehlungen zum „sicheren Babyschlaf“ mehr oder weniger pauschal davon abgeraten wird. Dies steht in gewissem Kontrast zu der Tatsache, dass das Bed-sharing weltweit enorm verbreitet ist, und lässt vielleicht auch andere Faktoren, wie die Rolle des kindlichen Alters oder die Auswirkungen auf die mütterliche Stillbereitschaft, zu sehr außer Acht. In einer interessanten Übersichtsarbeit im „Fokus Hebammenwissenschaft“ dieser Zeitschrift werden daher die Empfehlungen zur Prophylaxe des Sudden Infant Death Syndrome (SIDS) in Europäischen Ländern mit besonders niedriger (Griechenland, Italien, Niederlande) und besonders hoher SIDS-Inzidenz (UK, Österreich, Frankreich) analysiert und der aktuellen Evidenzlage gegenübergestellt. Es zeigt sich, dass, was empfohlen bzw. nicht empfohlen wird, nicht immer der wissenschaftlichen Evidenz entspricht, und dass ein sorgfältigerer Abgleich, so zumindest die Folgerung der Autorinnen, auch differenziertere Empfehlungen gerade zum Thema Bed-sharing erlauben würde.