bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of KIC 7023917: Spotted Low-mass Ratio Eclipsing Binary with δ Scuti Pulsations
Authors: Gajdoš Pavol , Parimucha Štefan , Skarka Marek , Kamenec Matúš , Lipták Jozef , Karjalainen Raine 
Published: September 2024

Abstract
Times of minima of eclipsing binary KIC 7023917 show quasiperiodic anti-symmetric deviations from the calculated one with an amplitude of up to 10 minutes and a period of 200–300 days. These changes correlate with the observed variations of the light-curve maxima (amplitude and phase separation). We used photometric data obtained by Kepler and TESS missions to analyze the times of minima and determine system parameters. The phases and amplitudes of the maxima were measured to study the O’Connell effect. As an additional source of information, we performed ground-based multicolor photometric observation and determined the radial velocities of the system from our spectroscopic measurements. We could explain long-term variations of the light-curve shape and times of the eclipses using the cold star spot located on the secondary component and the modification of its size. Based on our modelling, the system consists of a primary main-sequence star of spectral type A7 and an evolved, oversized secondary component with a mass ratio of only 0.1 due to past mass transfer. Calculation of absolute parameters gives us the mass of the primary component about 1.8 M
☉ and 0.2 M
☉ for the secondary one, and radii of 2.2 R
☉ of the primary star and 0.9 R
☉ of secondary one, respectively. The studied low-mass ratio eclipsing binary is probably a progenitor of the variable star of EL CVn type. A multiple-period photometric variability was disclosed in the TESS data ranging from half to two hours due to δ Scuti-type pulsations of the primary component.
Accurate Measurement of the Lensing Magnification by BOSS CMASS Galaxies and Its Implications for Cosmology and Dark Matter
Authors: Xu Kun , Jing Y. P. , Gao Hongyu , Luo Xiaolin , Li Ming 
Published: September 2024

Abstract
Magnification serves as an independent and complementary gravitational lensing measurement to shear. We develop a novel method to achieve an accurate and robust magnification measurement around BOSS CMASS galaxies across physical scales of 0.016h
−1 Mpc < r
p < 10h
−1 Mpc. We first measure the excess total flux density δ
M of the source galaxies in the deep DECaLS photometric catalog that are lensed by CMASS galaxies. We convert δ
M to magnification μ by establishing the δ
μ–δ
M relation using a deeper photometric sample. By comparing magnification measurements in three optical bands (grz), we constrain the dust attenuation curve and its radial distribution, discovering a steep attenuation curve in the circumgalactic medium of CMASS galaxies. We further compare dust-corrected magnification measurements to model predictions from high-resolution dark matter-only (DMO) simulations in Wilkinson Microwave Anisotropy Probe (WMAP) and Planck cosmologies, as well as the hydrodynamic simulation TNG300-1, using precise galaxy–halo connections from the Photometric objects Around Cosmic webs method and the accurate ray-tracing algorithm P3MLens. For r
p > 70h
−1 kpc, our magnification measurements are in good agreement with both WMAP and Planck cosmologies, resulting in an estimation of the matter fluctuation amplitude of S
8 = 0.816 ± 0.024. However, at r
p < 70h
−1 kpc, we observe an excess magnification signal, which is higher than the DMO model in Planck cosmology at 2.8σ and would be exacerbated if significant baryon feedback is included. Implications of the potential small scale discrepancy for the nature of dark matter and for the processes governing galaxy formation are discussed.
Ne viii in the Warm-hot Circumgalactic Medium of FIRE Simulations and in Observations
Authors: Wijers Nastasha A. , Faucher-Giguère Claude-André , Stern Jonathan , Byrne Lindsey , Sultan Imran 
Published: September 2024

Abstract
The properties of warm-hot gas around ∼L
* galaxies can be studied with absorption lines from highly ionized metals. We predict Ne viii column densities from cosmological zoom-in simulations of halos with masses in ∼1012 and ∼1013
M
☉ from the Feedback in Realistic Environments (FIRE) project. Ne viii traces the volume-filling, virial-temperature gas in ∼1012
M
☉ halos. In ∼1013
M
☉ halos the Ne viii gas is clumpier, and biased toward the cooler part of the warm-hot phase. We compare the simulations to observations from the COS Absorption Survey of Baryon Harbors (or CASBaH) and COS Ultraviolet Baryon Survey (or CUBS). We show that when inferring halo masses from stellar masses to compare simulated and observed halos, it is important to account for the scatter in the stellar-mass–halo-mass relation, especially at M
⋆ ≳ 1010.5
M
☉. Median Ne viii columns in the fiducial FIRE-2 model are about as high as observed upper limits allow, while the simulations analyzed do not reproduce the highest observed columns. This suggests that the median Ne viii profiles predicted by the simulations are consistent with observations, but that the simulations may underpredict the scatter. We find similar agreement with analytical models that assume a product of the halo gas fraction and metallicity (relative to solar) ∼0.1, indicating that observations are consistent with plausible circumgalactic medium temperatures, metallicities, and gas masses. Variants of the FIRE simulations with a modified supernova feedback model and/or active galactic nuclei feedback included (as well as some other cosmological simulations from the literature) more systematically underpredict Ne viii columns. The circumgalactic Ne viii observations therefore provide valuable constraints on simulations that otherwise predict realistic galaxy properties.
Reducing Instrumental Errors in Parkes Pulsar Timing Array Data
Authors: Rogers Axl F. , van Straten Willem , Gulyaev Sergei , Parthasarathy Aditya , Hobbs George , Chen Zu-Cheng , Feng Yi , Goncharov Boris , Kapur Agastya , Liu Xiaojin , Reardon Daniel , Russell Christopher J. , Zic Andrew 
Published: September 2024

Abstract
This paper demonstrates the impact of state-of-the-art instrumental calibration techniques on the precision of arrival times obtained from 9.6 yr of observations of millisecond pulsars using the Murriyang 64 m CSIRO Parkes Radio Telescope. Our study focuses on 21 cm observations of 25 high-priority pulsars that are regularly observed as part of the Parkes Pulsar Timing Array project, including those predicted to be the most susceptible to calibration errors. We employ measurement equation template matching (METM) for instrumental calibration and matrix template matching (MTM) for arrival time estimation, resulting in significantly improved timing residuals with up to a sixfold reduction in white noise compared to arrival times estimated using scalar template matching and conventional calibration based on the ideal feed assumption. The median relative reduction in white noise is 33%, and the maximum absolute reduction is 4.5 μs. For PSR J0437−4715, METM and MTM reduce the best-fit power-law amplitude (2.7σ) and spectral index (1.7σ) of the red noise in the arrival time residuals, which can be tentatively interpreted as mitigation of 1/f noise due to otherwise unmodeled steps in polarimetric response. These findings demonstrate the potential to directly enhance the sensitivity of pulsar timing array experiments through more accurate methods of instrumental calibration and arrival time estimation.
Perceptions of Health Care Provider Interactions Among Medicare Beneficiaries With Hearing Trouble and the Role of an Accompanying Companion
Authors: Wallace Laura G. , Menon Katherine N. , Garcia Morales Emmanuel E. , Shin John J. , Kolberg Elizabeth R. , Myers Clarice , Deal Jennifer A. , Reed Nicholas S. 
Published: September 2024

Purpose
Hearing trouble (HT) impairs communication with health care providers (HCPs) and may lead to negative care experiences that impact health outcomes. The current study aimed to examine how HT influences patient perceptions of provider interactions and whether having an accompanying companion during health care visits modifies perceptions of provider interactions.

Method
This cross-sectional study analyzed 9,104 responses from the 2016 Medicare Current Beneficiary Survey.

Results
Compared to beneficiaries without HT, those with HT had greater odds of negative perceptions of HCP interactions. Beneficiaries with HT had greater odds of disagreeing with positive statements about care, including provider competence, provider cares to check everything, provider response, and provider rarely in a hurry. Having an accompanying companion during health care visits was not found to significantly modify perceptions of interactions.

Conclusion

Findings suggest HT is a modifiable factor impacting health care communication. Implementing simple accommodation strategies in clinical practice can improve nursing care for older adults with HT. [
Journal of Gerontological Nursing, 50
(11), 29–35.]
Adding a Mobility Champion to an Existing Progressive Mobility Protocol: An Evidence-Based Initiative
Authors: Redler Gwen , Bauce Karen 
Published: September 2024

Purpose
This evidence-based initiative assessed the effect of adding a mobility champion to an existing progressive mobility protocol on functional decline in hospitalized older adults as evidenced by recommended discharge to home versus an inpatient rehabilitation facility.

Method
Older adults admitted from home to a 47-bed medical-surgical telemetry unit who were assessed as ambulatory, either independently or with assistance (Level 5), and with a progressive mobility order in the electronic health record were included in the initiative. Patient care associates who volunteered to be mobility champions were trained how to safely ambulate patients.

Results
Patients who worked with a mobility champion were less likely to be referred to inpatient rehabilitation post discharge for further care due to functional decline.

Conclusion

Mobility has a critical role in the maintenance of hospitalized older adults' functional abilities and is a determinate of their post discharge disposition. [
Journal of Gerontological Nursing, 50
(11), 37–43.]
The Minimum Patient Acceptable Symptom State for the ACL-Return to Sport after Injury Scale Among Patients Treated With Anterior Cruciate Ligament Reconstruction
Authors: Dwyer Tim , Ajrawat Prabjit , Lameire Darius Luke , Betsch Marcel , Whelan Daniel , Shahrokhi Shahram , Theodoropoulos John , Hoit Graeme , Chahal Jaskarndip 
Published: September 2024

Background
Despite most patients reporting optimal knee function after anterior cruciate ligament reconstruction (ACLR), not all return to their pre-injury level of sport, often due to psychological factors. The ACL-Return to Sport after Injury Scale (ACL-RSI) was developed to measure the emotions, confidence in performance, and risk appraisal among athletes returning to sport. The purpose of this study was to determine the Patient Acceptable Symptom State (PASS) threshold for the ACL-RSI in patients undergoing ACLR.

Materials and Methods
Patients with an ACL injury that required surgical reconstruction were included in this prospective study. All patients underwent ACLR with a bone-patellar tendon-bone autograft and completed the ACL-RSI 12 months postoperatively. An anchor-based approach was used to generate a receiver operating characteristic curve and establish the PASS threshold. Multivariable regression analyses were used to evaluate the effect of age, sex, and baseline score on likelihood of achieving PASS.

Results

A total of 113 patients (37% female) with a mean age of 28.1±8.2 years and a mean body mass index of 24.7±3.5 kg/m
2
were included. At 12 months postoperatively, the threshold value for the PASS of the ACL-RSI was 40 (robust area under the curve: 0.89; sensitivity: 81%; specificity: 85%). Baseline score, sex, and age had no significant influence on achieving PASS at 12 months postoperatively.

Conclusion

In a group of patients undergoing ACLR with bone-patellar tendon-bone autograft, the PASS threshold value was 40 for the ACL-RSI at 12 months postoperatively. The PASS value for the ACL-RSI established from this study can be useful for designing future clinical trials. [
Orthopedics
. 2025;48(1):20–24.]
Longitudinal analysis of lower limb muscle activity and ankle tendon biosignals using structural equation modeling
Authors: Matsumoto Tatsuhiko , Kano Yutaka 
Published: September 2024

We collected biosignals from 63 participants and extracted the features corresponding to each level of exerted muscle force. Data were classified into typical and atypical patterns. Data analysis was performed using the Linear Latent Curve Model (LCM) and the Conditional Linear LCM. The typical patterns demonstrated a high degree of fit. Factors, such as ankle circumference and muscle mass, influenced the model intercept. A larger ankle circumference indicated attenuation of signal transmission from the tendon to the skin surface, leading to lower biosignal values. These results indicate that biosignals from the tendons near the ankle can be captured using piezoelectric film sensors. There are studies that define biosignals originating from tendons as mechanotendography. It has been demonstrated that the relationship between biosignals originating from tendons and the exerted muscle force can be explained linearly. Insights from this study may facilitate individualized approaches in the fields of motion control and rehabilitation. Physiological studies to elucidate the mechanisms underlying biosignal generation are necessary.
Challenges with communication of critical laboratory results in a resource-limited setting in South Africa
Authors: Davids Ameerah , Zemlin Annalise E. , Kruger Elsie C. 
Published: September 2024

Background: Critical laboratory results are test results suggesting a patient is in immediate danger unless treatment is administered promptly. There is a paucity of studies in sub-Saharan Africa on clinicians’ utility of these results and affected patients’ outcomes. In our resource-limited setting in South Africa, we rely on telephonic communication to convey critical results.Objective: The aim of this study was to determine the average time for clinicians to acknowledge these results on the laboratory information system and to determine the outcome of affected patients.Methods: A retrospective descriptive audit at Tygerberg Academic Hospital was conducted between 01 October 2021 and 31 March 2022. Critical results and the time of acknowledgement by clinicians on the laboratory information system were obtained from inpatients and outpatients. One hundred and twenty inpatient critical results were randomly selected for a folder review to determine patient outcome.Results: Overall, 2514 critical results were reported, and 63 results were excluded. The remaining 2451 results were obtained from 1346 patients. The majority (94.5%) of results were obtained from inpatients, where 1681 (68.6%) were acknowledged within 24 h. The folder audit of 120 patients determined that 40 (33.3%) patients demised. In 82 (68.3%) patients, communication of a critical result did not alter clinical management.Conclusion: Critical laboratory results are crucial to patient care. This study found that approximately one-third of critical laboratory results were not used within 24 h. Engaging clinicians in current practice and implementing a means of improved communication of critical results is required.What this study adds: The study adds to the evidence of challenges experienced with communicating critical results to clinicians which could impact patient care. This is especially true in resource-limited settings; clinicians need to be made aware of the importance of these results, and communication modes need to be improved.
Comparative evaluation of different endodontic access cavity designs on canal transportation and centering ability using bondent platinum file system on mandibular molar – An in vitro cone-beam computed tomography study
Authors: Asha K. , Ghivari Sheetal , Pujar Madhu , Sait Sameer 
Published: September 2024

Aim:
This study aimed to compare the effects of different endodontic access cavity designs on canal transportation (CT) and centering ability (CA) using the bondent platinum file system on mandibular molars, utilizing cone-beam computed tomography (CBCT).

Methods:
Thirty extracted human permanent mandibular molars which fulfilled the inclusion criteria were divided into three groups, Group 1 (TEC): Traditional endodontic access cavity (control group), Group 2 (CEC): Conservative endodontic access cavity, and Group 3 (TrEC): Truss endodontic access cavity. The teeth were scanned using CBCT initially followed by random allocation into three groups. Root canals were prepared using Bondent platinum file system in mesiobuccal and mesiolingual canals using #25.06 file and in distal canal #30.06 file. Postpreparation, CBCT scans to assess CT and CA at 3 mm, 5 mm, and 7 mm from the apex. Data analysis was performed using a one-way analysis of variance and Tukey’s post hoc test.

Results:
Significant differences (P < 0.01) in mean CT and CA were observed between Group 1 (TEC) and Groups 2 (CEC) and 3 (TrEC). Dentin removal was highest at 3 mm, followed by 5 mm and 7 mm. The distal canal showed the greatest dentin loss compared to other canals.

Conclusion:
Minimal access cavity designs (CEC and TrEC) demonstrated less CT and improved CA compared to the traditional access cavity design (TEC). Study limitations acknowledged that conservative access cavity designs result in less deviation (CT) and better centering of the prepared canals compared to the traditional approach (TEC). These results imply the potential benefits of adopting less invasive access cavity designs in endodontic practice to enhance treatment outcomes.
Photon-counting X-ray Computed Tomography Using a Cadmium Telluride Flat Panel Detector with High Spatial Resolutions and Dual-energy Selection
Authors: Sato Jiro , Sato Eiichi , Ito Kazuki , Moriyama Hodaka , Hagiwara Osahiko , Enomoto Toshiyuki , Watanabe Manabu , Yoshida Sohei , Yoshioka Kunihiro , Nitta Hiroyuki 
Published: September 2024

Introduction:
To perform energy-dispersive X-ray imaging, we constructed a photon-counting X-ray computed tomography (CT) scanner to perform enhanced K-edge CT.

Methods:
X-ray photons penetrating through an object were detected using a cadmium telluride flat panel detector (FPD) with pixel dimensions of 100 × 100 mm2, and 720 radiograms from the FPD were sent to the personal computer to reconstruct tomograms. Gadolinium (Gd) K-edge energy is 50.2 keV, and Gd-Kedge CT was carried out using photons with an energy range of 50–100 keV.

Results:
Compared with low-energy CT of 15–50 keV, the gray density of muscle and bone substantially decreased, and the image contrast of Gd media was improved utilizing Gd-K-edge CT.

Conclusion:
Using the cone beam, the effective pixel dimensions were 80 × 80 μm2, and blood vessels were observed at a high contrast using Gd-Kedge CT.
Impact of Iron Supplementation on the State of Oxidative Stress in Pregnant Women Suffering from Iron-deficient Anemia
Authors: Jewad Abdulkareem M. , Albakaa Ali A. H. , Khalaf Warqaa S. , Shwayel Ameer J. 
Published: September 2024

Abstract

BACKGROUND:
The majority of pregnant women suffer from iron deficiency anemia (IDA). In addition to affecting hematological parameters, IDA disrupts the body’s oxidative balance, which impairs pregnancy outcome.

OBJECTIVE:
The objective is to determine the impact of orally supplementation of ferrous sulfate on pregnant women with IDA on their antioxidant levels and oxidative stress (OS) status.

MATERIALS AND METHODS:
This case–control study population comprised 60 pregnant women, divided into two categories: 30 pretreated pregnant women with IDA and 30 posttreatment pregnant women after 6–8 weeks with ferrous sulfate 200 mg daily. We also included 30 nonanemic, nonpregnant women as a healthy control group. We measured the antioxidant parameters: total antioxidant capacity (TAC), superoxide dismutase (SOD), glutathione peroxidase (GPx), and the malondialdehyde (MDA) oxidant parameter for all groups.

RESULTS:
The results revealed significant decreases in each of hemoglobin (HB), iron, ferritin, TAC, GPx, and SOD, as well as a significant increase in MDA levels (P < 0.000) in the pretreated IDA patients compared to the control group. The oxidant-antioxidant indices TAC, SOD, GPx, and MDA got a lot better after being treated with 200 mg/day of ferrous sulfate for 6–8 weeks. All of the study’s biomarkers showed a positive correlation with the level of HB.

CONCLUSION:
Oxidative stress has been associated with iron-deficient anemia. Supplementation with ferrous sulfate 200 mg is necessary for reducing the resulting OS.
Risk Factors of Chronic Kidney Diseases: A Retrospective, Record based Study from a Tertiary Care Hospital in India
Authors: Qureshi Kamran F. , Patil Yogeshwari , Rajput Prashant 
Published: September 2024

Abstract

Background:
There is a alarming rise of chronic kidney diseases (CKDs) prevalence globally, which is associated with significant morbidity and mortality. The burden of Chronic Kidney Diseases is rapidly rising in developing countries. The study aimed to assess the major risk factors of CKD in patients of a tertiary hospital.

Materials and Methods:
Hospital-based, retrospective study was conducted at a hospital, in Mumbai, among CKD patients. Medical records of 500 CKD patients were analysed.

Results:
The mean age of participants was 53.87 years. Majority of the patients had risk factors for CKD such as hypertension and diabetes. The mean serum creatinine was 4.04 mg/dL. Majority of the cases were in G4 and G5 stages of CKD and 201 patients had undergone kidney transplant. Association between age and transplant was significant. Furthermore, association between developing New Onset Diabetes Mellitus After Transplantation (NODAT) was statistically significant.

Conclusion:
Major risk factors for CKD were hypertension, diabetes and advancing age. Most of the cases of CKD were diagnosed late. There should be increased awareness about CKD among the population with special emphasis on cases of hypertension and diabetes.