bluuebunny/crossref_metadata_2025_split huggingface dataset:
The impact of social participation on Subjective Wellbeing in the older adult: the mediating role of anxiety and the moderating role of education
Authors: Qing Zaihua , Wu Caihong , Gao Tao 
Published: May 2024

IntroductionThe study aims to examine the mediating role of anxiety in the relationship between social participation and Subjective Wellbeing among Chinese older adults. Additionally, it investigates the moderating ed of education in this relationship.MethodsThe data came from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) published by peking University, with a sample size of 10,626 individuals aged 60 years and above. SPSS 21.0 was used for the statistical analysis of the data, and Mplus 8.0 was used for the statistical processing of the mediating and moderating effects analysis.Results(1) The social participation significantly and positively predicated Subjective Wellbeing; (2) Anxiety partially mediated the eect between social participation and Subjective Wellbeing. The mediating eect value was 0.103; (3) Education plays a moderating role in the impact of social participation on subjective Wellbeing.DiscussionIn summary, social participation can reduce the anxiety and enhance their Subjective Wellbeing. Meanwhile, the eet of social participation on Subjective Wellbeing was the greatest for the older adult with high education. The findings suggest that community-led activities can be initiated to improve social participation in the older adult. Furthermore, educational courses could be to support the healthy aging of older adults in China.
What are the important factors influencing the physical activity level of junior high school students: a cross-sectional survey
Authors: Ma Huijun , Li Xuefeng , Ma Chengliang , Teng Da 
Published: May 2024

BackgroundEngaging in regular physical activity has been consistently linked to improved physical health and academic performance. Despite its known benefits, there is a concerning trend of decreased physical activity among children globally. The study primarily aims to investigate the level of physical activity among junior high school students in Taiyuan and analyse the main affecting factors from a socio-ecological perspective.MethodsA cross-sectional study was conducted, involving 650 junior high school students from 7 schools in Taiyuan, and 648 valid questionnaires were ultimately collected. The data on students’ physical activity levels were collected through the Children’s Leisure Activities Study Survey Questionnaire, and the data on factors affecting students’ physical activity were collected through the Student Perceived Factors Affecting Physical Activity Questionnaire.ResultsIn this study, students from the 7th, 8th, and 9th grades participated in physical activities, averaging 214.500 min per week in moderate-intensity and 25.000 min in high-intensity activities, cumulatively averaging 280.000 min weekly. Notably, a significant disparity (p = 0.012) was observed in the combined duration of moderate and high-intensity activities, with male students engaging more time compared to their female counterparts (307.500 vs. 255.000 min). This variance extended across different grades, particularly evident in 8th graders who recorded the highest weekly high-intensity activity duration (31.000 min) and overall physical activity time (320.500 min), surpassing the 7th graders(p = 0.007 for high-intensity activities). Furthermore, an exploratory factor analysis of a 32-item questionnaire, designed to identify determinants of physical activity, revealed six principal components. These components were found to positively correlate with both moderate and high-intensity physical activities.ConclusionResults emphasize that educational institutions and community programs should collaborate to offer engaging weekend physical activity programs. Schools should develop and implement tailored physical education curricula addressing gender and grade differences. Furthermore, schools and local governments should invest in high-quality sports equipment and facilities.
Dechloranes and chlorinated paraffins in sediments and biota of two subarctic lakes
Authors: Arriola Aline , Al Saify Insam , Warner Nicholas A. , Herzke Dorte , Harju Mikael , Amundsen Per-Arne , Evenset Anita , Möckel Claudia , Krogseth Ingjerd S. 
Published: May 2024

Our understanding of the environmental behavior, bioaccumulation and concentrations of chlorinated paraffins (CPs) and Dechloranes (Dec) in the Arctic environment is still limited, particularly in freshwater ecosystems. In this descriptive study, short chain (SCCPs) and medium chain (MCCPs) CPs, Dechlorane Plus (DP) and analogues, and polychlorinated biphenyls (PCBs) were measured in sediments, benthic organisms, three-spined stickleback (Gasterosteus aculeatus), Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta) in two Sub-Arctic lakes in Northern Norway. Takvannet (TA) is a remote lake, with no known local sources for organic contaminants, while Storvannet (ST) is situated in a populated area. SCCPs and MCCPs were detected in all sediment samples from ST with concentration of 42.26–115.29 ng/g dw and 66.18–136.69 ng/g dw for SCCPs and MCCPs, respectively. Only SCCPs were detected in TA sediments (0.4–5.28 ng/g dw). In biota samples, sticklebacks and benthic organisms showed the highest concentrations of CPs, while concentrations were low or below detection limits in both char and trout. The congener group patterns observed in both lakes showed SCCP profiles dominated by higher chlorinated congener groups while the MCCPs showed consistency in their profiles, with C14 being the most prevalent carbon chain length. Anti- and syn-DP isomers were detected in all sediment, benthic and stickleback samples with higher concentrations in ST than in TA. However, they were only present in a few char and trout samples from ST. Dec 601 and 604 were below detection limits in all samples in both lakes. Dec 603 was detected only in ST sediments, sticklebacks and 2 trout samples, while Dec 602 was the only DP analogue found in all samples from both lakes. While there were clear differences in sediment concentrations of DP and Dec 602 between ST and TA, differences between lakes decreased with increasing δ15N. This pattern was similar to the PCB behavior, suggesting the lake characteristics in ST are playing an important role in the lack of biomagnification of pollutants in this lake. Our results suggest that ST receives pollutants from local sources in addition to atmospheric transport.
Real-World Evidence Study of Patients with KRAS-Mutated NSCLC in Finland
Authors: Anttalainen Anna , Pietarinen Paavo , Tuominen Samuli , Mattila Riikka , Mutka Aino , Knuuttila Aija 
Published: May 2024

While KRAS is the most frequently mutated oncogene in non-small cell lung cancer (NSCLC), KRAS-mutant tumors have long been considered difficult to treat and thus, an unmet need still remains. Partly due to the lack of targeted treatments, comprehensive real-world description of NSCLC patients with KRAS mutation is still largely missing in Finland. In this study, all adult patients diagnosed with locally advanced and unresectable or metastatic NSCLC from 1 January 2018 to 31 August 2020 at the Hospital District of Helsinki and Uusimaa were first identified in this retrospective registry-based real-world study. The final cohort included only patients tested with next generation sequencing (NGS) and was stratified by the KRAS mutation status. A total of 383 patients with locally advanced and unresectable or metastatic NSCLC and with NGS testing performed were identified. Patients with KRAS mutation (KRAS G12C n = 35, other KRAS n = 74) were younger than patients without KRAS mutations, were all previous or current smokers, and had more often metastatic disease at diagnosis. Also, these patients had poorer survival, with higher age, Charlson comorbidity index (CCI) being 5 or above, and KRAS G12C being the most significant risk factors associated with poorer survival. This suggests that the patients with KRAS mutation have a more aggressive disease and/or tumors with KRAS mutation are more difficult to treat, at least without effective targeted therapies.
KEPATUHAN PERAWAT TENTANG PENDOKUMENTASIAN ASUHAN KEPERAWATAN DI RUMAH SAKIT UMUM DAERAH KOTA BANDA ACEH
Authors: Ramadhani Novia , Yuswardi Yuswardi , Rachmah Rachmah , Kamil Hajjul , Mayasari Putri 
Published: May 2024

Latar Belakang Dokumentasi keperawatan merupakan catatan resmi yang digunakan sebagai aspek legal keperawatan. Kelengkapan dan keakuratan menuliskan asuhan keperawatan membuktikan bahwa dokumentasi yang di tulis dengan lengkap menunjukkan kepatuhan perawat dalam melakukan pendokumentasian. Tujuan Penelitian ini bertujuan mengetahui gambaran kepatuhan perawat pelaksana tentang pendokumentasian asuhan keperawatan di Rumah Sakit Umum Daerah Meuraxa Kota Banda Aceh. Metode Jenis penelitian kuantitatif dengan desain cross sectional study. Populasi pada penelitian ini adalah semua perawat pelaksana pada ruang rawat kelas I, II, dan III sebanyak 223 perawat. Formula slovin denganmenggunakan purposive sampling menetapkan 143 perawat pelaksana sebagai sampel penelitian. Pengolahan data menggunakan analisis univariat. Hasil Hasil penelitian menunjukkan bahwa secara umum kepatuhan perawat pelaksana dalam melengkapi pendokumentasian asuhan keperawatan berada pada katagori tidak patuh 97,2%. Kesimpulan Diharapkan pihak rumah sakit dapat memfasilitasi perawat dengan diadakannya pelatihan, seminar, supervisi, reward dan meningkatkan sarana prasarana untuk pemenuhan dan peningkatan pelayanan di rumah sakit.
Liquid phase epitaxy of GaN films on sapphire substrates under an atmospheric pressure nitrogen ambience
Authors: Katsuumi Masataka , Akasaka Tetsuya 
Published: May 2024

Abstract
GaN films were grown on sapphire substrates using liquid phase epitaxy under an atmospheric pressure nitrogen ambience, employing molten Ga and Fe3N as a source mixture. Single-crystal GaN (0001) films were successfully grown on sapphire (0001) substrates within a growth temperature (T
g) range of 750 °C–900 °C. When varying the Fe3N concentration in the range of 0.05–3 mol%, lower iron nitride resulted in high crystallinity of GaN (0001) films. The incorporation of iron atoms in GaN can negatively impact crystal quality. Parameterizing T
g at a concentration of 0.1 mol% Fe3N showed that higher T
g led to a reduction in the peak width of GaN (0002) X-ray rocking curves. However, at 3 mol%, elevating T
g resulted in the degradation of the crystallinity of GaN. This degradation may be attributed to the increased solubility of iron atoms in GaN with increasing T
g.
Variations in Line Profiles of Atomic Transitions in RR Lyrae Stars
Authors: Sneden Christopher , Preston George W. 
Published: May 2024

Abstract
We have investigated the absorption shapes of atomic lines and Hα in RR Lyrae stars. We used the database of high-resolution spectra gathered with the Las Campanas Observatory du Pont Telescope, analyzing a set of about 2700 short exposure spectra of 17 RRab and 5 RRc variables. To increase the signal-to-noise ratio of the spectra for each star, we first coadded spectra in small photometric phase bins, and then coadded metallic line profiles in velocity space. The resulting line absorption shapes vary with photometric phase in a consistent manner for all RRab stars, while exhibiting no obvious phase-related variations for the RRc stars. We interpret these line profile variations in terms of velocity gradients in the photospheric layers that produce absorption line profiles. The Hα profiles are much broader, indicative of shock temperatures of order 100,000 K.
The Intrinsic Sizes of Odd Radio Circles
Authors: Rupke David S. N. , Coil Alison L. , Whalen Kelly E. , Moustakas John , Tremonti Christy A. , Perrotta Serena 
Published: May 2024

Abstract
A new class of sources, the so-called odd radio circles (ORCs), have been discovered by recent sensitive, large-area radio continuum surveys. The distances of these sources have so far relied on photometric redshifts of optical galaxies found at the centers of or near ORCs. Here we present Gemini rest-frame optical spectroscopy of six galaxies at the centers of, or potentially associated with, the first five ORC discoveries. We supplement this with Legacy Survey imaging and Prospector fits to their griz+W1/W2 photometry. Of the three ORCs with central galaxies, all lie at distances (z = 0.27–0.55) that confirm the large intrinsic diameters of the radio circles (300–500 kpc). The central galaxies are massive (M
* ∼ 1011
M
☉), red, unobscured ellipticals with old (≳1 Gyr) stellar populations. They have LINER spectral types that are shock-powered or active galactic nucleus (AGN)-powered. All three host low-luminosity, radio-quiet AGN. The similarity of their central galaxies is consistent with a common origin, perhaps as a blast wave from an ancient starburst. The other two ORCs are adjacent and have no prominent central galaxies. However, the z = 0.25 disk galaxy that lies between them hosts a Type 2, moderate-luminosity AGN. They may instead be the lobes of a radio jet from this AGN.
Stellar Escape from Globular Clusters. II. Clusters May Eat Their Own Tails
Authors: Weatherford Newlin C. , Rasio Frederic A. , Chatterjee Sourav , Fragione Giacomo , Kıroğlu Fulya , Kremer Kyle 
Published: May 2024

Abstract
We apply for the first time orbit-averaged Monte Carlo star cluster simulations to study tidal tail and stellar stream formation from globular clusters (GCs), assuming a circular orbit in a time-independent spherical Galactic potential. Treating energetically unbound bodies—potential escapers (PEs)—as collisionless enables this fast but spherically symmetric method to capture asymmetric extratidal phenomena with exquisite detail. Reproducing stream features such as epicyclic overdensities, we show how returning tidal tails can form after the stream fully circumnavigates the Galaxy, enhancing the stream's velocity dispersion by several kilometers per second in our ideal case. While a truly clumpy, asymmetric, and evolving Galactic potential would greatly diffuse such tails, they warrant scrutiny as potentially excellent constraints on the Galaxy’s history and substructure. Reexamining the escape timescale Δt of PEs, we find new behavior related to chaotic scattering in the three-body problem; the Δt distribution features sharp plateaus corresponding to distinct locally smooth patches of the chaotic saddle separating the phase-space basins of escape. We study for the first time Δt in an evolving cluster, finding that

Δ
t
∼
(

E

J

−
0.1

,

E

J

−
0.4

)

for PEs with (low, high) Jacobi energy E
J, flatter than for a static cluster (

E

J

−
2

). Accounting for cluster mass loss and internal evolution lowers the median Δt from ∼10 Gyr to ≲100 Myr. We finally outline potential improvements to escape in the Monte Carlo method intended to enable the first large grids of tidal tail/stellar stream models from full GC simulations and detailed comparison to stream observations.
Age Determination of LAMOST Red Giant Branch Stars Based on the Gradient Boosting Decision Tree Method
Authors: Wang Hai-Feng , Carraro Giovanni , Li Xin , Li Qi-Da , Spina Lorenzo , Chen Li , Wang Guan-Yu , Deng Li-Cai 
Published: May 2024

Abstract
In this study, we estimate the stellar ages of LAMOST DR8 red giant branch (RGB) stars based on the gradient boosting decision tree (GBDT) algorithm. We used 2643 RGB stars extracted from the APOKASC-2 asteroseismological catalog as the training data set. After selecting the parameters ([α/Fe], [C/Fe], T
eff, [N/Fe], [C/H], log g) highly correlated with age using GBDT, we apply the same GBDT method to the new catalog of more than 590,000 stars classified as RGB stars. The test data set shows that the median relative error is around 11.6% for the method. We also compare the predicted ages of RGB stars with other studies (e.g., based on APOGEE) and find some systematic differences. The final uncertainty is about 15%–30% compared to the ages of open clusters. Then, we present the spatial distribution of the RGB sample with an age determination, which could recreate the expected result, and discuss systematic biases. All these diagnostics show that one can apply the GBDT method to other stellar samples to estimate atmospheric parameters and age.
Intrinsic Emission of PSR B1937+21 at 327 MHz
Authors: Mahajan Nikhil , van Kerkwijk Marten H. 
Published: May 2024

Abstract
At 327 MHz, the observed emission of PSR B1937+21 is greatly affected by scattering in the interstellar medium, on a timescale of order the pulse period. We use the bright impulsive giant pulses emitted by the pulsar to measure the impulse response of the interstellar medium and then recover the intrinsic emission of the pulsar by deconvolution—revealing fine structure on timescales not normally observable. We find that the intrinsic widths of the main pulse and interpulse in the pulse profile are similar to those measured at higher frequencies. We detect 60,270 giant pulses, which typically appear as narrow, ∼100 ns bursts consisting of one to a few nanoshots with widths ≲ 10 ns. However, about 10% of the giant pulses exhibit multiple bursts that seem to be causally related to each other. We also report the first detection of giant micropulses in PSR B1937+21, primarily associated with the regular main pulse emission. These are distinct from giant pulses not only in the phases at which they occur, but also in their larger widths, of order a microsecond, and steeper energy distribution. These measurements place useful observational constraints on emission mechanisms for giant pulses as well as the regular radio emission of millisecond pulsars.
Mass Flows in Expanding Coronal Loops
Authors: Reep Jeffrey W. , Scott Roger B. , Chhabra Sherry , Unverferth John , Knizhnik Kalman J. 
Published: May 2024

Abstract
An expansion of the cross-sectional area directly impacts the mass flow along a coronal loop and significantly alters the radiative and hydrodynamic evolution of that loop as a result. Previous studies have found that an area expansion from the chromosphere to the corona significantly lengthens the cooling time of the corona and appears to suppress draining from the corona. In this work, we examine the fluid dynamics to understand how the mass flow rate, the energy balance, and the cooling and draining timescales are affected by a nonuniform area. We find that in loops with moderate or large expansion (cross-sectional area expansion factors of 2, 3, 10, 30, 100 from the photosphere to the apex), impulsive heating, for either direct thermal heating or electron beam heating, induces a steady flow into the corona, so that the coronal density continues to rise during the cooling phase, whereas a uniform loop drains during the cooling phase. The induced upflow carries energy into the corona, balancing the losses from thermal conduction, and continues until thermal conduction weakens enough so that it can no longer support the radiative losses of the transition region. As a result, the plasma cools primarily radiatively until the onset of catastrophic collapse. The speed and duration of the induced upflow both increase in proportion to the rate of area expansion. We argue that observations of blueshifted spectral lines, therefore, could place a constraint on a loop’s area expansion.
A 1 bit Raw Voltage-recording System for Dedicated Observations of Transients at Low Radio Frequencies
Authors: Bane Kshitij S. , Barve Indrajit V. , Gireesh G. V. S. , Kathiravan C. , Ramesh R. 
Published: May 2024

Abstract
Recently we had reported commissioning of a prototype for pulsar observations at low radio frequencies (<100 MHz) using log-periodic dipole antennas in the Gauribidanur Radio Observatory (≈77°E, 14°N) near Bangalore in India (https://www.iiap.res.in/?q=centers/radio). The aforementioned system (the Gauribidanur Pulsar System) is currently being augmented to directly digitize the radio-frequency signals from the individual antennas in the array. Our initial results using a 1 bit raw voltage-recording system indicate that such a back-end receiver offers distinct advantages like (i) simultaneous observations of any set of desired directions in the sky with multiple offline beams and smaller data rate/volume, and (ii) archival of the observed data with minimal resources for reanalysis in the future, either in the same or a different set of directions in the sky.
Knowledge and Attitudes Toward Pressure Ulcer Prevention Evidence-based Guidelines among Nursing Students at Jazan University, Saudi Arabia
Authors: Alyahyawi Khalid O. , Alshekh Fatmah O. , Madkhali Abdullah Y. , Mosleh Amani A. , Alfaifi Ibrahim A. , Omar Rawan N. , Baiti Maisa A. , Hakami Abdulrahman 
Published: May 2024

Abstract

Background:
Pressure ulcers (PUs) are a common global problem. They affect health-care costs and patient health because of increased morbidity and mortality rates. Critically ill patients are more prone to acquiring PUs than other patients. As the prevalence of PUs is high in Saudi Arabia, more attention is required for PU prevention. Nurses’ knowledge and attitudes toward PU prevention are crucial.

Aims:
This study aimed to assess the knowledge and attitudes of nursing students regarding PU prevention evidence-based guidelines.

Setting and Design:
This descriptive, cross-sectional study was conducted among nursing students at Jazan University.

Materials and Methods:
Data were collected using an electronic questionnaire.

Statistical Analysis Used:
Data were entered, coded, and analyzed using the SPSS version 23.

Results:
A total of 378 participants were included. The mean age was 22.4 ± 3.4 years, and the mean knowledge score was 7.6 ± 2.64 (range = 0–16). Of the participants, 365 (96.6%) and 13 (3.4%) were considered to have poor and good knowledge about PUs, respectively. Only 72 (19%) correctly identified a lack of oxygen as the cause of PUs; other participants answered malnutrition and moisture. Conversely, 200 (52.9%) participants indicated that recent weight loss below patients’ ideal weight increases the risk for PUs. Concerning knowledge about preventive measures, 64 (16.9%) participants correctly answered that a backward sitting position, with both legs resting on a footrest, can reduce the amount of pressure. Meanwhile, 169 (44.7%) participants correctly selected thick air cushion as a means to reduce the magnitude of pressure when patients are sliding down on a chair. Some participants answered that PUs can be reduced if patients are mobilized. Seventy-two (19%) participants indicated that patients laying on a visco-elastic foam mattress should be repositioned every 2 h to reduce the duration of pressure. Age, year of education, training experience, and department were not significantly associated with knowledge about PUs (P = 0.333, P = 0.370, P = 0.700, and P = 0.810, respectively).

Conclusions:
The general knowledge and attitudes toward PUs of the nursing students at Jazan University were poor. Nevertheless, they had an average knowledge level regarding PU prevention. Age and training experience were not significantly associated with knowledge about PUs.