bluuebunny/crossref_metadata_2025_split huggingface dataset:
GPS/BDS signal analysis and precise orbit determination of the inclined geosynchronous orbit satellite LT4A
Authors: Zhang Zhenghao , Yang Peng , Wang Zhenxing , Huang Yong , Cao Jianfeng , Chen Yanling , Cheng Zhien , Dong Wenli , Hu Xiaogong 
Published: February 2024

Abstract

The LT4A satellite is the world's first IGSO satellite capable of receiving GPS and BDS signals. It is also the world's first SAR satellite in high orbit. Based on the received GNSS data, the data availability and measurement quality were first analyzed, and then the accuracy of the 30-h and 72-h arc length orbit determination results were verified using the orbit overlap method and the laser ranging verification method. According to the data analysis, the onboard receiver of the LT4A satellite can receive an average of 3.9 GPS satellites and 4.0 BDS satellites in a single epoch. The PDOPs of GPS observations, BDS observations, and combined GPS + BDS observations are 21.66, 25.96, and 15.81, and the number of epochs with more than four satellites is 32.6%, 37.6%, and 98.5% of the total epochs. The cycle slip ratios of the GPS and BDS observations are 6.3% and 28.9%, the pseudo-range noise is 1.75 m and 0.95 m, the carrier phase noise is 0.46 mm and 0.35 mm, and the average CNR are 44.6 dB-Hz and 46.9 dB-Hz, respectively. When only GPS observations, only BDS observations, and combined GPS + BDS observations are used, the average RMS of the overlapping results for the 30-h arcs is 4.091 m, 4.319 m, and 2.274 m, and the laser range verification results are 0.994 m, 0.978 m, and 0.277 m. The average RMS of the overlapping results for the 72-h arcs is 3.242 m, 3.199 m, and 1.807 m, and the laser ranging verification results are 0.527 m, 0.687 m, and 0.356 m. The onboard real-time orbit was used for observations to determine the orbit, resulting in a 95.4% improvement in the RMS of the original real-time orbit.
Multiple Tuned CNTs by Rare Earth Oxides for High Efficiency Electromagnetic Wave Absorption
Authors: Gao Han , Qin Long , Tao Shifei , Xiong Ziming , Wu Fan , Lei Ming 
Published: February 2024

Abstract

Optimizing high dielectric constant materials is a promising strategy for manufacturing efficient electromagnetic wave absorbing materials, which aims to fully exploit the performance advantages of micro-nano materials and overcome the adverse effects at low scales. This requires reasonable and meticulous component optimization. The low-cost and environmentally friendly fillers possess significant advantages. In this work, two specifications of carbon nanotubes (CNTs) are selected as the research objects. A simple solvothermal method is used to compound rare earth oxides (REO). Finally, CNTs/REO composites are prepared. The effects of different particle sizes on the electromagnetic wave absorption properties of the system are studied in detail from the microscopic morphology. Improve the interface effect and impedance matching in the system. When the filling amount is 30 wt.%, the minimum reflection loss (RLmin) can reach -69.94 dB, and the effective absorption bandwidth (EAB) is widened from 3.00 GHz to 5.20 GHz. The huge performance span is attributed to the optimization of REO nanoparticles in the regulation of CNTs from morphology structure to electromagnetic parameters. The interfacial polarization, dielectric polarization and dipole relaxation are improved significantly. The excellent electromagnetic wave absorption performance makes CNTs/REO have great application prospects in electronic devices. In addition, radar reflective interface (RCS) simulation provides theoretical support for the practical application of CNTs/REO composites.
Hyaluronic acid as a pulpotomy material in primary molars: an up to 30 months retrospective study
Authors: Sezgin Batın Ilgıt , Sezgin Gökce Cicek Ildes , Koyuncu Özge , Mentes Ali 
Published: February 2024

Abstract

Objectives The aim of this retrospective study was to determine the long-term clinical and radiographic success of our previous randomized clinical trial (RCT) and to compare the success of hyaluronic acid (HA), with the widely used formocresol (FC) and ferric sulphate (FS) agents.
Materials and methods This retrospective study is the extension of the 1-year survey of our RCT that had compared the effectiveness of a HA pulpotomy over FC and FS pulpotomies and included clinical and radiographic evaluations with a follow-up period of over 24 months for 44 children who applied to our clinic between May 2019 and September 2019. Long-term clinical and radiographic data were obtained from the periodic files of our department, wherein each tooth's file was examined to identify any clinical and radiographic findings. Descriptive statistics and Pearson chi-square tests were used to evaluate the data. Statistical significance was considered as p<0.05.
Results The clinical and radiographic success rates of the HA, FC, and FS groups were not statistically different at >24 months (p=0.163 and p=0.977, respectively). None of the teeth in the HA group showed any clinical findings at >24 months.
Conclusions HA pulpotomies exhibited comparable success rates to FC and FS materials spanning over 24 months examinations. Further long-term follow-up human studies are needed to better understand the effect of HA on the dental pulp of human primary molars.
Clinical relevance Because of convenient accessibility and applicability of HA, it may be recommended as a promising alternative medicament for pulpotomy treatments of primary molars.
A pulsar-like swing in the polarisation position angle of a nearby fast radio burst
Authors: Mckinven Ryan , Bhardwaj Mohit , Eftekhari Tarraneh , Kilpatrick Charles , Kirichenko Aida , Pal Arpan , Cook Amanda , Gaensler Bryan , Giri Utkarsh , Kaspi Victoria , Michilli Daniele , Nimmo Kenzie , Pearlman Aaron , Pleunis Ziggy , Sand Ketan , Stairs Ingrid , Andersen Bridget , Andrew Shion , Bandura Kevin , Brar Charanjot , Cassanelli Tomas , Chatterjee Shami , Curtin Alice , Dong Fengqiu Adam , Eadie Gwendolyn , Fonseca Emmanuel , Ibik Adaeze , Kaczmarek Jane , Kharel Bikash , Lazda Mattias , Leung Calvin , Li Dongzi , Main Robert , Masui Kiyoshi , Mena-Parra Juan , Ng Cherry , Pandhi Ayush , Patil Swarali , Prochaska Jason , Rafiei-Ravandi Masoud , Scholz Paul , Shah Vishwangi , Shin Kaitlyn , Smith Kendrick 
Published: February 2024

Abstract

Fast radio bursts (FRBs) last for milliseconds and arrive at Earth from cosmological distances. While their origin(s) and emission mechanism(s) are presently unknown, their signals bear similarities with the much less luminous radio emission generated by pulsars within our Galaxy and several lines of evidence point toward neutron star origins. For pulsars, the linear polarisation position angle (PA) often exhibits evolution over the pulse phase that is interpreted within a geometric framework known as the rotating vector model (RVM). Here, we report on a fast radio burst, FRB 20221022A, detected by the Canadian Hydrogen Intensity Mapping Experiment (CHIME) and localized to a nearby host galaxy (∼ 65 Mpc), MCG+14-02-011. This one-off FRB displays a ∼ 130 degree rotation of its PA over its ∼ 2.5 ms burst duration, closely resembling the “S”-shaped PA evolution commonly seen from pulsars and some radio magnetars. The PA evolution disfavours emission models involving shocks far from the source and instead suggests magnetospheric origins for this source which places the emission region close to the FRB central engine, echoing similar conclusions drawn from tempo-polarimetric studies of some repeating sources. This FRB’s PA evolution is remarkably well-described by the RVM and, although we cannot determine the inclination and magnetic obliquity due to the unknown period/duty cycle of the source, we can dismiss extremely short-period pulsars (e.g., recycled millisecond pulsars) as potential progenitors. RVM-fitting appears to favour a source occupying a unique position in the period/duty cycle phase space that implies tight opening angles for the beamed emission, significantly reducing burst energy requirements of the source.
A multimodal neural signature of face processing in autism within the fusiform gyrus
Authors: Floris Dorothea , Llera Alberto , Zabihi Mariam , Jones Emily , Mason Luke , Haartsen Rianne , Holz Nathalie , Mei Ting , Elleaume Camille , Vieira Bruno Hebling , Pretzsch Charlotte , Forde Natalie , Baumeister Sarah , Dell’Acqua Flavio , Durston Sarah , Banaschewski Tobias , Ecker Christine , Holt Rosemary , Baron-Cohen Simon , Bougeron Thomas , Charman Tony , Loth Eva , Murphy Declan , Buitelaar Jan , Beckmann Christian , group EU-AIMS LEAP , Langer Nicolas 
Published: February 2024

Abstract

Differences in face processing are commonly reported in case/control studies of autism. Their neural correlates have been explored extensively across single neuroimaging modalities within key regions of the face processing network, such as the fusiform gyrus (FFG). Nonetheless, it is poorly understood how different variation(s) in brain anatomy and function combine to impact face processing and social functioning. Extracting the shared information across different modalities is essential to derive a more comprehensive understanding of the mechanisms underlying autism. Here, we leveraged a large multimodal sample to study the cross-modal signature of face processing within the FFG across four imaging modalities (structural MRI, resting-state fMRI [rs-fMRI], task-fMRI and EEG) in 204 individuals aged 7-30years comprising both autistic and non-autistic individuals (NAI). Combining two methodological innovations – normative modeling and linked independent component analysis – we integrated individual-level deviations across modalities to assess the efficacy of multimodal components in differentiating autistic from NAI and informing autism-associated social functioning. Autistic individuals differed significantly in a multimodal component, driven by bilateral rs-fMRI, bilateral structure, right task-fMRI, and left EEG loadings involving face-selective and retinotopic FFG regions. Multimodal components outperformed unimodal ones in differentiating autistic from NAI. Within the autism group, there was a significant multivariate association between multimodal components and a set of cognitive and clinical features associated with social functioning but not non-social features. These findings underscore the importance of elucidating individual-level, integrated neural associations of core social functioning in autism, offering potential for refined stratification and the identification of mechanistic and prognostic biomarkers.
Study of MHD over Reiner-Philippoff fluid flow past slandering sheet with homogeneous-heterogeneous reactions
Authors: Warraich Sanaullah 
Published: February 2024

Abstract
Study of chemical reaction along with magnetic effect is significant in industrial process now a days. Magnetohydrodynamics (MHD) over Reiner-Philippoff (R-P) fluid flow passing through a stretching sheet and variable thickness with homogeneous-heterogeneous reactions is investigated in this article. With similarity transformations, partial differential equations are modified into dimensionless system of ordinary differential equations. Numerical results are obtained by the shooting technique along with the R-K method by using computational software MATLAB. The physical analysis of appropriate parameters in the velocity and concentration profiles is discussed in detail and shown graphically. It is summarized with critical observations that the inclining values of the wall thickness parameter cause the reduction in velocity and homogeneous reactions. At the same time, contrary behaviour is observed for heterogeneous reactions. The effect of MHD is noted to resist the velocity and concentration profiles for homogeneous reactions. However, the opposite behaviour is noted for heterogeneous reactions.
Haploidentical vs Mismatched Unrelated Donor Transplants with Posttransplant Cyclophosphamide-based GVHD Prophylaxis
Authors: Modi Dipenkumar , Kim Seongho , Shatta Maya , Deol Abhinav , Kin Andrew , Ayash Lois , Ratanatharathorn Voravit , Uberti Joseph 
Published: February 2024

Abstract

Post-transplant cyclophosphamide (PTcy) as a GVHD prevention strategy has provided encouraging results in haploidentical and mismatched unrelated donor (MMUD) transplants. We sought to determine overall survival and GVHD-free relapse-free survival (GRFS) between haploidentical and MMUD using PTcy-contaning GVHD prophylaxis. We retrospectively compared outcomes of 144 adult patients who underwent either haploidentical or MMUD transplants using peripheral blood stem cells, and PTcy, tacrolimus, and mycophenolate for GVHD prophylaxis. Between January 2013 and December 2021, 89 patients received haploidentical and 55 received MMUD transplants. Among MMUD, 87% (n=48) were 7/8 HLA-matched and 13% (n=7) were 6/8 HLA-matched. Median age of the population was 62.5 years, 24% (n=35) were African American, 73% (n=105) had AML, and 20% (n=29) received myeloablative conditioning regimen. Median time to neutrophil engraftment was prolonged in the haploidentical group (18 vs 15 days, p<0.001), while platelet engraftment was similar (23 vs 21 days, p=0.15). Using propensity score-based covariate adjustment, no difference in overall survival and GRFS was noted between both groups. Our study demonstrated that transplant outcomes did not differ between haploidentical and MMUD when PTcy was used for GVHD prophylaxis. In the absence of HLA-matched donors, haploidentical and MMUD appear to provide equivalent outcomes.
Invasion Domino Effects in the Tropical Forest Plants
Authors: Sarkar Sibam , Deb Panna 
Published: February 2024

Abstract

Invasive plants disrupt ecosystems by influencing species interactions, aiding co-invader integration, and worsening competition for native plants. Successful forest invasive species management relies on grasping these interaction patterns at the community level. This study aims to assess the community attributes of invasive plants in tropical forests of Northeast India, examining their dominance in various habitats and elucidating their species-specific effects on associated co-invaders and non-invasive groups. Dominant invaders identified based on density were tested for their presence or absence effects on the proportions of co-invading species, non-invasive species, and overall plant diversity. The present investigation recorded 101 invasive plant species mostly of neotropical origin, comprising of grasses, sedges, forbs, shrubs, trees, and vines. The findings revealed a substantial decrease in overall species diversity in the presence of dominant invasive species, further demonstrating a significant negative association with the non-invasive group and a notable positive association with the co-invasive group. These findings offer valuable insights by specifying the dominance and outcompeting nature of exotic invaders which will be very helpful for devising effective management plans to counter biotic invasion in the biodiversity rich tropical forested landscapes.
Sketching the spatial disparities in heatwave trends by changing atmospheric teleconnections in the Northern Hemisphere
Authors: Zhang Tuantuan , Cai Fenying , Liu Caihong , Gerten Dieter , Yang Song , Li Kaiwen , Kurths Jürgen 
Published: February 2024

Abstract

Pronounced spatial disparities in heatwave trends are bound up with a diversity of atmospheric signals with complicated variations, but assessing their relationships quantitatively remains a challenging problem. Here, using a network-searching approach to identify the strengths of heatwave-related atmospheric teleconnections (AT) with ERA5 reanalysis data, we quantify the close links between heatwave and AT in the Northern Hemisphere. This way, approximately half of the interannual variability of heatwaves are explained and nearly 80% of the zonally asymmetric trend signs (attenuation vs. enhancement) are estimated correctly by the AT changes in the mid-latitudes. We also uncover that the likelihood of extremely hot summers has increased sharply by a factor of 4.5 after 2000 over areas with enhanced AT, but remained almost unchanged over the areas with attenuated AT. Furthermore, reproducing eastern European heatwave trends among various models of the Coupled Model Intercomparison Project Phase 6 largely depends on the simulated Eurasian AT changes, highlighting the potential significant impact of AT shifts on the simulation and projection of heatwaves.
Australian public perspectives on genomic newborn screening: Which conditions should be included?
Authors: Lynch Fiona , Best Stephanie , Gaff Clara , Downie Lilian , Archibald Alison D. , Gyngell Christopher , Goranitis Ilias , Peters Riccarda , Savulescu Julian , Lunke Sebastian , Stark Zornitza , Vears Danya F 
Published: February 2024

Abstract

Background
Implementing genomic sequencing into newborn screening programs allows for significant expansion in the number and scope of conditions detected. We sought to explore public preferences and perspectives on which conditions to include in genomic newborn screening (gNBS).
Methods
We recruited English-speaking members of the Australian public over 18 years of age, using social media, and invited them to participate in online focus groups.
Results
Seventy-five members of the public aged 23–72 participated in one of fifteen focus groups. Participants agreed that if prioritisation of conditions was necessary, childhood-onset conditions were more important to include than later-onset conditions. Despite the purpose of the focus groups being to elicit public preferences, participants wanted to defer to others, such as health professionals or those with a lived experience of each condition, to make decisions about which conditions to include. Many participants saw benefit in including conditions with no available treatment. Participants agreed that gNBS should be fully publicly funded.
Conclusion
How many and which conditions are included in a gNBS program will be a complex decision requiring detailed assessment of benefits and costs alongside public and professional engagement. Our study provides support for implementing gNBS for treatable childhood-onset conditions.
Proteomic analysis of transbronchial biopsy tissue reveals a distinct proteome and mechanistic pathways in high-grade eosinophilic inflammation after lung transplantation
Authors: Tahmasbpour Eisa , Philp Ashleigh , Cree Tabitha , Sivasubramaniam Vanathi , Thomson Claire , Plit Marshall , Ravipati Anjaneyaswamy , Raftery Mark , Darley David 
Published: February 2024

Abstract
Background: Eosinophilic (EOS) inflammation is associated with acute cellular rejection (ACR) and an increased risk of chronic lung allograft dysfunction (CLAD) after lung transplantation (LTx); however, the underlying mechanisms remain unclear. We aimed to identify potential biomarkers and molecular mechanisms behind EOS inflammation after LTx.
Methods: A cross-sectional comparative proteome analysis of transbronchial biopsy (TBBx) tissue was performed using formalin-fixed paraffin-embedded (FFPE) tissue from 18 LTx recipients. The cohort was comprised of isolated EOS inflammation (n=6), ACR (n=6) and these were compared with stable controls (n=6). EOS TBBx were defined as ≥10 eosinophil per high power field without ACR. ACR TBBx was defined as ISHLT A-grade >/=2. Control biopsies were defined as those without ACR, EOS or positive BAL microbiology at 120 days after LTx. Peptides were extracted from TBBx and subjected to liquid-chromatography mass spectrometry. Differentially expressed proteins (DEPs) were identified and quantified using bioinformatic tools and then candidate biomarkers validated by immunohistochemistry (IHC) staining.
Results: Using a cut-off of Q<0.05 and a fold change of >1.6 for the variation in expression, 61 DEPs were identified in EOS TBBx, 56 of which were upregulated and 5 were downregulated. High-protein overlap (74.84%) was found between ACR and EOS groups. Several proteins such as Serpins, CFL-1, MIF, DDX3X, CCT8, Gal-3, Coro1A, Collagens and Mucins were upregulated in EOS TBBx. IHC staining validated alterations in the expression of target proteins. Bioinformatic analysis further revealed that most DEPs in EOS TBBx are related to leukocytes migration and activation, inflammasome formation, free radical production and oxidative stress, epithelial mesenchymal transition and excessive deposition of extracellular matrix.
Conclusions: This study discovers and validates specific proteomic signatures that link EOS with ACR and elucidates mechanisms of injurious allograft inflammation. A number of novel therapeutic targets and potential early biomarkers are identified for allograft inflammation which require future diagnostic and prognostic validation.
Different Approaches for the Solutions of Nonlinear Landau-Ginzburg-Higgs (LGH) Equation
Authors: Ege Serife Muge 
Published: February 2024

Abstract
In this work , we handle the nonlinear Landau-Ginzburg-Higgs (LGH) equation. Some different semianalytical solutions are obtained by using three different auxilary equation methods in the traveling wave sense. Each methods gives a couple of solutions and all cases are investigated. Obtained solutions are represented by graphically to see the structure of the wave. Changes in the wave structure according to changing parameters are observed.
Patterns of a structural covariance network associated with Mild Behavioural Impairment in biologically defined Alzheimer’s Disease
Authors: Michelutti Marco , Urso Daniele , Tafuri Benedetta , Gnoni Valentina , Giugno Alessia , Zecca Chiara , Dell’Abate Maria Teresa , Vilella Davide , Manganotti Paolo , Blasi Roberto , Nigro Salvatore , Logroscino Giancarlo 
Published: February 2024

Abstract

Background: The frequent presentation of Alzheimer’s disease (AD) with neuropsychiatric symptoms (NPS) in the context of normal or minimally-impaired cognitive function led to the concept of Mild Behavioral Impairment (MBI). While MBI's impact on subsequent cognitive decline is recognized, its association with brain network changes in biologically-defined AD remains unexplored.
Methods: We investigated correlations between structural covariance networks and MBI-C checklist sub-scores in 33 biologically-defined AD patients (ranging from Mild Cognitive Impairment to early dementia). Network properties were assessed through graph theory analysis. The subjects were all characterized as amyloid-positive, whether assessed through cerebrospinal fluid (CSF) analysis or amyloid positron emission tomography (PET) scans.
Results: Affective dysregulation correlated with decreased segregation and integration in the right inferior frontal gyrus (IFG). Impulse dyscontrol and social inappropriateness correlated positively with centrality and efficiency in the right posterior cingulum cortex (PCC). Global network properties showed a preserved small-world organization.
Conclusions: This study reveals associations between MBI subdomains and structural brain network alterations in biologically-confirmed AD. Our data suggest that the IFG's involvement is crucial for mood dysregulation in AD, while PCC could be involved in compensatory mechanisms in respect to social cognition and impulse control. In conclusion, our findings provide further evidence that network changes in specific brain regions may be related to NPS across the AD spectrum and underscore the significance of biomarker-based neuroimaging for precise differential diagnosis of MBI.