bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Comparative Study on the Joint Coordination of Archery Athletes of Different Skill Levels: Based on Functional Data Analysis
Authors: Zhang Baifa , Lin Zhi-Cheng 
Published: December 2024

Purpose: Joint coordination is a critical factor influencing high-quality technical movements. By analyzing the changes between joints through functional data analysis, characteristic parameters can be derived. This study employs functional data analysis to explore the differences in joint coordination characteristics among archery athletes at various skill levels, offering a new perspective for coaches and athletes to analyze specific movement techniques.
Methods: Twenty-eight archery athletes were selected as subjects, including eight international master athletes, twelve national first-level athletes, and eight national second-level athletes from Chinese national and province team. An infrared light spot motion capture system was utilized to gather kinematic parameters during the archery shooting process. Functional data analysis was employed to determine the upper limb joint coordination characteristic parameters of athletes at different skill levels.
Results: Archery athletes at different levels exhibit three types of joint coordination characteristics between the shoulder and elbow joints during the drawing and aiming phases. The first type of joint coordination characteristic shows statistical differences across levels (P=0.03). These differences are primarily due to the following: 1) For international master athletes, the movement speeds of the shoulder and elbow joints both peak in the early phase of drawing; 2) The range of coupled motion between the shoulder and elbow joints is higher in the early phase of drawing and lower in the latter half, and consistently lower during the aiming phase; 3) The duration of the drawing phase is shorter.
Conclusion: Functional data analysis effectively captures the differences in upper limb joint coordination characteristics among archery athletes at various levels. Superior athletes typically exhibit synchronous shoulder-elbow joint movements, enhanced feedforward capabilities, and a quicker rhythm of movement.
The Role of Hydrolyzed Collagen in Combating Skin Aging: A Literature Review
Authors: Kopczyńska Ewelina , Kulej Piotr , Korgiel Matylda , Ciołkosz Michał , Biesiada Wiktor , Skoczeń Agnieszka , Kulesza Michał , Kopczyński Mateusz , Woźniak Justyna 
Published: December 2024

Introduction
Skin aging has become an increasingly common issue. As time passes, the skin undergoes degenerative changes, including the loss of elasticity and reduction in collagen content. In this context, the use of nutricosmetics as supplements has increased in recent years. Numerous scientific studies have shown the benefits of hydrolyzed collagen supplementation in improving the signs of skin aging. In this article, we summarize some of the most promising studies available in the literature and evaluate the effectiveness of oral collagen supplementation in the context of skin health.
Purpose of the work: This study aims to review and characterize the effectiveness of hydrolyzed collagen in the skin anti-aging process.
Materials and Methods: A comprehensive analysis of research papers available on PubMed, Google Scholar and Embase was conducted using search terms including the following keywords: hydrolyzed collagen, supplementation, skin aging, anti-aging.
Results: Hydrolyzed collagen supplementation has been shown to improve skin elasticity, hydration, and reduce wrinkles. Although generally safe and well-tolerated, minor side effects have been reported in some cases. An individualized approach to supplementation, along with ongoing research to optimize dosages and formulations, is essential. Future studies should focus on understanding the long-term effects of collagen supplementation, exploring its impact on different demographic groups, and comparing the efficacy of various collagen sources, such as marine and bovine collagen.
Comparative Analysis of Shooting Consistency Among Archers of Different Skill Levels
Authors: Zhang Baifa , Lin Zhi-Cheng 
Published: December 2024

Purpose: This study aimed to investigate the biomechanical and electromyographic factors underlying shooting consistency among archers of different skill levels, providing insights into performance optimization and training strategies. Methods: The study analyzed 28 left-handed archers, including elite, mid-level, and novice athletes. Using an eight-camera infrared motion capture system and a wireless surface EMG system, kinematic and muscle activity data were collected for key upper limb muscles during two action phases: drawing and aiming. Coefficients of variation (CV) were calculated for both kinematic and EMG parameters, and statistical analysis was conducted to compare the groups. Results: Elite and mid-level archers exhibited significantly lower CVs in key kinematic parameters (e.g., shoulder abduction) and muscle activation consistency during the drawing phase compared to novices. Differences in muscle activation were most pronounced in the flexor muscle groups. These findings highlight the critical role of movement consistency in archery performance. Conclusion: Greater consistency in kinematic and muscle activation patterns distinguishes higher-skilled archers, particularly during the drawing phase. These results emphasize the importance of targeting movement consistency and coordination in training programs to enhance performance in precision sports like archery.
Igneous Rock Associations 30. Intratelluric Versus Subaerial Nucleation and Growth of Phenocrysts in Basaltic Lava Flows
Authors: Ross Martin E. 
Published: December 2024

Phenocrysts in porphyritic lava flows are generally considered to have grown under conditions of slow magma cooling within source reservoirs at depth. The matrix (i.e. groundmass) surrounding the phenocrysts is assumed to form under rapid cooling conditions subsequent to eruption of the residual liquids at the surface. Alternatively, it has been demonstrated experimentally that phenocrysts could grow subaerially in basaltic lavas cooled at constant, linear rates. It has been suggested this mechanism could explain the correlation of porphyritic textures with unusually thick canyon-filling flows of Columbia River Basalt. Field and petrographic data supports intratelluric nucleation and growth of plagioclase phenocrysts in three lavas of the Columbia River Basalt Group (CRBG). The distinction is important because the typical basaltic phenocryst paragenesis (plagioclase, followed by olivine, then augite), if produced under surface conditions, cannot be used to test fractional crystallization models in magma reservoirs of the Columbia River Basalt Group or any other lavas. Ideally, to test the hypotheses of subaerial vs. intratelluric (subsurface) growth of phenocrysts, both intrusive (i.e. dykes) and extrusive samples crystallized from the same liquid need to be examined to compare sizes and abundances of phenocrysts. If phenocryst growth occurs only subaerially, then a lava flow should contain more phenocrysts than its intrusive counterpart. In the case of nucleation and growth in both a dyke and its flow, the flow still would contain more phenocrysts due to grains formed in the dyke being added to those formed in the flow. Detailed modal and grain size data were collected for three dyke-flow pairs of CRBG by the author and provide an excellent opportunity to compare intrusive and extrusive textures. These findings along with XRF major and trace element data indicate that the phenocrysts in these lavas must have grown within the magma reservoir and not at the surface. A model is proposed that explains the variation of phenocryst distribution laterally within a lava as an interplay of variations of magma flow and the underlying paleo-topography.
Legal regulation of labour relations in the conditions of martial law in Ukraine
Authors: Vasylivna Vyshnovetska Svitlana , Mychailovych Vyshnovetskyi Vadym , Petrovych Dyban Maksym , Volodymyrivna Kmetyk Khrystyna , Mykolayivna Chernous Svitlana 
Published: December 2024

Abstract
This article explores the transformation of Ukraine’s labour market in the context of war. It analyses the impact of the military conflict on labour relations and employment, considering key changes in the labour sector: declining employment, rising unemployment, migration and worsening working conditions. The authors examine government initiatives to support the labour market, including entrepreneurship programmes, business relocation strategies and employment opportunities for internally displaced persons (IDPs). The study identifies a significant shortage of skilled personnel due to emigration and human losses. It analyses statistical data and survey results, proposing measures to revitalise the labour market through a systematic approach that considers demographic, economic, educational and other factors.
Frequency of mismatching surface colors in the wild
Authors: Foster David H. 
Published: December 2024

Colored surfaces may appear to match in one viewing condition but not in another, usually because of a change in illumination. The aim of this computational study was to estimate the frequency of mismatching outdoors under natural, uncontrolled, illumination changes, unlike the purely spectral changes in studies of illuminant metamerism. Data were taken from hyperspectral radiance images acquired at intervals of 1 min to more than 4 h. For pairs of randomly chosen surfaces in a scene, the relative frequency of their appearing initially the same and different later was around 10−4 to 10−3, depending on color difference. However, if they already appeared the same, the relative frequency was higher, around 6% to over 60%, much higher than for illuminant metamerism, suggesting that real-world lighting changes may well impair surface identification by color.
Effects on maternal and pregnancy outcomes of first-trimester malaria infection among nulliparous women from Kenya, Zambia, and the Democratic Republic of the Congo
Authors: Leuba Sequoia I. , Westreich Daniel , Bose Carl L. , Olshan Andrew F. , Taylor Steve M. , Tshefu Antoinette , Lokangaka Adrien , Carlo Waldemar A. , Chomba Elwyn , Mwenechanya Musaku , Liechty Edward A. , Bucher Sherri L. , Ekhaguere Osayame A. , Esamai Fabian , Nyongesa Paul , Jessani Saleem , Saleem Sarah , Goldenberg Robert L. , Moore Janet L. , Nolen Tracy L. , Hemingway-Foday Jennifer , McClure Elizabeth M. , Koso-Thomas Marion , Derman Richard J. , Hoffman Matthew , Meshnick Steven R. , Bauserman Melissa 
Published: December 2024

Background
Few studies have assessed the impact of first-trimester malaria infection during pregnancy. We estimated this impact on adverse maternal and pregnancy outcomes.

Methods
In a convenience sample of women from the ASPIRIN (Aspirin Supplementation for Pregnancy Indicated risk Reduction In Nulliparas) trial in Kenya, Zambia, and the Democratic Republic of the Congo, we tested for first-trimester Plasmodium falciparum infection using quantitative polymerase chain reaction. We estimated site-specific effects on pregnancy outcomes using parametric g-computation.

Results
Compared to uninfected women, we observed the adjusted site-specific prevalence differences (PDs) among women with first-trimester malaria of the following pregnancy outcomes: preterm birth among Congolese (aPD = 0.06 [99% CI: -0.04, 0.16]), Kenyan (0.03 [-0.04, 0.09]), and Zambian (0.00 [-0.10, 0.20]) women; low birth weight among Congolese (0.07 [-0.03, 0.16]), Kenyan (0.01 [-0.04, 0.06]) and Zambian (-0.04 [-0.13, 0.16]) women; spontaneous abortion among Congolese (0.00 [-0.05, 0.04]), Kenyan (0.00 [-0.04, 0.04]), and Zambian (0.02 [-0.07, 0.24]) women, and anemia later in pregnancy among Congolese (0.04 [-0.09, 0.16]), Kenyan (0.05 [-0.06, 0.17]), and Zambian (0.07 [-0.12, 0.36]) women. The pooled PD for anemia later in pregnancy (26–30 weeks) was 0.08 [99% CI: 0.00, 0.16].

Conclusions
First-trimester malaria was associated with increased prevalence of anemia later in pregnancy. We identified areas for further investigation including effects of first-trimester malaria on preterm birth and low birth weight.
Analysis of associated malformations by computed tomography in adults with polysplenia syndrome: A pilot study
Authors: Gu Xinru , Xu Shuangshuang , Chen Jinghua , Jiang Xiaoqin , Xie Ping , Fang Xiang , Gao Yan , Huang Jian , Liu Kefu 
Published: December 2024

Objective
To analytically depict the associated malformations of polysplenia syndrome (PS) in adults via computed tomography (CT).

Materials and methods
The incidence of malformations associated with PS in twelve adult patients was retrospectively analyzed via CT imaging.

Results
The number of splenic nodules ranged from three to twelve; the splenic nodules were located in the left upper quadrant in nine patients and in the right upper quadrant in three patients. A short pancreas was present in all twelve patients. Midgut malrotation was present in eight patients. Situs inversus totalis was present in two patients. Nine patients presented the absence of hepatic segmental inferior vena cava (IVC), with the hepatic vein directly converging into the right atrium and the continuation of the azygos vein. The preduodenal portal vein was present in six patients. Left lung heterotaxy was found in nine patients. The inferior vena cava was bilateral in one patient. Aberrant right subclavian arteries, bilateral common carotid arteries sharing trunks, abnormal renal vein branching and routing, and abdominal portal vein branching were also found in individual patients.

Conclusions
PS is a complex malformation syndrome involving multiple systems. The most common malformation is short pancreas, and other malformations, such as left lung heterogeneity, hepatic segmental IVC agenesis with continuation of the azygos vein, midgut malrotation, preduodenal portal vein, and left atrial heterotaxy, have relatively high prevalence rates.
Development and validation of a risk assessment model for predicting the failure of early medical abortions: A clinical prediction model study based on a systematic review and meta-analysis
Authors: Liu An-Hao , Xu Bin , Li Xiu-Wen , Yu Yue-Wen , Guan Hui-Xin , Sun Xiao-Lu , Lin Yan-Zhen , Zhang Li-Li , Zhuo Xian-Di , Li Jia , Chen Wen-Qun , Hu Wen-Feng , Ye Ming-Zhu , Huang Xiu-Min , Chen Xun 
Published: December 2024

Objective
As the first model in predicting the failure of early medical abortion (EMA) was inefficient, this study aims to develop and validate a risk assessment model for predicting the failure of EMAs more accurately in a clinical setting.

Methods
The derivation cohort was obtained from a comprehensive systematic review and meta-analysis. The clinically significant risk factors were identified and combined with their corresponding odds ratios to establish a risk assessment model. The risk factors were assigned scores based on their respective weightings. The model’s performance was evaluated by an external validation cohort obtained from a tertiary hospital. The outcome was defined as the incidence of EMA failure.

Results
A total of 126,420 patients who had undergone medical abortions were included in the systematic review and meta-analysis, and the pooled failure rate was 6.7%. The final risk factors consisted of gestational age, maternal age, parity, previous termination of pregnancy, marital status, type of residence, and differences between gestational age calculated using the last menstrual period and that measured via ultrasound. The risk factors were assigned scores based on their respective weightings, with a maximum score of 19. The clinical prediction model exhibited a good discrimination, as validated by external verification (402 patients) with an area under the curve of 0.857 (95% confidence interval 0.804–0.910). The optimal cutoff value was determined to be 13.5 points, yielding a sensitivity of 83.3% and specificity of 75.4%.

Conclusion
This study effectively establishes a simple risk assessment model including seven routinely available clinical parameters for predicting EMA failure. In preliminary validation, this model demonstrates good performance in terms of predictive efficiency, accuracy, calibration, and clinical benefit. However, more research and validation are warranted for future application.

Trial registration number
CRD42023485388.
Learning curve for the perinatal outcomes of radiofrequency ablation for selective fetal reduction: a single-center, 10-year experience from 2013 to 2023
Authors: Li Shuang , Sun Yu , Liu Zhe 
Published: December 2024

Abstract

Objectives
To investigate the perinatal outcomes of SR using radiofrequency ablation (RFA) in MC pregnancies, identified factors affecting these outcomes, and assessed the associated learning curve.

Methods
This retrospective cohort study included all consecutive MC pregnancies that required RFA from September 2013 to April 2023 at our institution. The perinatal outcomes were compared on the basis of various indications, and binary logistic regression analysis was performed to identify the risk factors for cotwin loss. Clinical datas of two periods (2013–2018 vs. 2019–2023) were compared to demonstrate the learning curve.

Results
The 107 cases composed of 40 (37.4 %) twin-twin transfusion syndrome (TTTS), 17 (15.9 %) selective intrauterine growth restriction (sFGR), 12 (11.2 %) twin reversed arterial perfusion sequence (TRAPS), 25 (23.4 %) fetal discordant anomalies, 10 (9.3 %) elective fetal reduction (EFR), and three (2.8 %) twin anemia polycythemia sequence (TAPS) cases. The overall live birth rate for cotwins was 83.2 %. The earliest gestational age at delivery was noted in the TTTS group (p=0.021). The procedure-to-delivery interval was the shortest in the TTTS group and the longest in the EFR group (p<0.001). Comparing the 2013–2018 period with the 2019–2023 period, we noted a significant increase in the live birth rate (p=0.01) and the procedure-to-delivery interval (p=0.003), mainly due to improved outcomes in TTTS cases.

Conclusions
RFA for SR is a safe and effective method for managing complicated MC pregnancies. The type of indication affects postoperative perinatal outcomes, with TTTS showing the most adverse effects. With the increasing number of cases and accumulation of experiences with simultaneous enhancement of technique proficiency, the postprocedural outcomes can be further improved.
Rhein promotes skin wound healing by activating the PI3K/AKT signaling pathway
Authors: Yang Dong , Li Wei , Xiang Ping , Ge Tingrui , Li Huazhuan , Zhang Yonggang 
Published: December 2024

Abstract
Rhein is a natural anthraquinone substance extracted from Rheum palmatum L. This study aimed to evaluate Rhein’s protective effects against skin wound by in vivo and in vitro models and investigate whether its protective mechanism regulated the PI3K/AKT signaling pathway. The skin wound mice model was established and then treated with Rhein for 10 days. Hematoxylin and eosin staining and Masson’s trichrome staining were applied to assess histological changes and collagen maturity in the mice skin wound tissues. Human skin fibroblasts (HSFs) viability, migration, and invasion were detected by Cell counting kit-8 (CCK-8), scratch wound, and transwell assays respectively. Moreover, the protein expression of p-PI3K, PI3K, p-AKT, and AKT were determined by western blot assay. We found that local treatment with Rhein promoted skin wound healing and accelerated collagen maturation, compared with the Model group. In addition, Rhein promoted skin wound healing through accelerated HSF proliferation, migration, and invasion. Furthermore, Rhein remarkably enhanced p-PI3K and p-AKT expression, as well as p-PI3K/PI3K and p-AKT/AKT ratio in skin wound mice and HSF cells, suggesting that Rhein promoted skin wound healing by activating PI3K/AKT signaling pathway. In conclusion, Rhein is a promising agent for promoting wound healing of skin tissues.
Management of Open Education Resources in Academic Libraries of Nigerian Public Universities
Authors: Salau Sadiat Adetoro , Adamu Abu Ahmed , Salami Rita Otibhor 
Published: December 2024

Abstract
With the growth of open educational resources (OERs), academic libraries have an opportunity to play a vital role in facilitating access, use, and development of OERs. This study explored the management practices of OER initiatives in Nigerian public university libraries. A sequential mixed method was adopted for this study using the sequential explanatory strategy. Quantitative method was used to gather data to inform the study population for the qualitative part of the study. The quantitative data was analysed descriptively, while the qualitative data was analysed thematically; both data were integrated into the discussion of findings to provide robustness and complementarity. The study revealed variability across institutions in the completeness of OER projects. It also found key drivers and challenges of integrating OERs in these institutions. While this study provided recommendations based on the findings, it also made suggestions for librarians seeking to expand their role in OER adoption through strategic leadership, faculty partnerships, and advocacy. The findings of this research contribute to the on-going discourse on OER adoption, offering insights into the challenges and opportunities facing academic libraries in sustaining OER initiatives.
Editorial
Authors: Milheira Rafael Guedes 
Published: December 2024

O sétimo volume dos Cadernos do LEPAARQ traz contribuições bastante diferenciadas às áreas de Antropologia e Arqueologia. São temáticas de pesquisa com objetos de trabalho hora opostos, hora complementares do ponto de vista temporal, físico e espacial, mas que permitem cada um a sua maneira, interpretar o passado e o presente das populações humanas. São discussões que emanam do mundo microscópico (fitólitos) e da zooarqueologia das populações Guarani, atingem à monumentalidade dos geoglifos do sudoeste amazônico e chegam até os conflitos sociais atuais, que atingem as populações nativas na América Latina. De um foco macro-regional latino americano chegamos à região serrana de Santa Catarina, palco onde ocuparam, em tempos pré-coloniais, as populações Jê meridionais, onde há “complexos funerários” interessantes, que, de um ponto de vista teórico, é um conceito discutido nesse volume sob um viés marxista. Essa viagem no tempo e no espaço não se furta de uma breve visita ao mundo grego, através de suportes materiais como ânforas, escrita antiga e iconografia.
IDENTIFICAÇÃO DE FITÓLITOS A PARTIR DE FRAGMENTOS DE CARVÃO
Authors: Pereira Gilson Laone 
Published: December 2024

Resumo: Este artigo tem o objetivo de apresentar os resultados de um processo, que visou a identificação e observação de fitólitos a partir de fragmentos de carvão, que foram encontrados no sítio Garopaba IV localizado no litoral de Santa Catarina, além de testes com fragmentos de carvão, propondo uma nova abordagem sobre estes importantes achados arqueológicos. Esta análise pode auxiliar a pesquisa arqueológica, pois tendo em vista que a presença de carvão é um traço marcante em sítios arqueológicos, a sua análise poderia ser, não somente com fins antracológicos. Os resultados demonstraram a eficácia na aplicação do método, em que foi possível identificar os fitólitos presentes nos fragmentos de carvão podendo ser uma boa ferramenta na pesquisa arqueológica.Abstract: This article aims to present the results of a process, that aimed at the identification and observation of phytoliths through charcoal remains, which were found at the site Garopaba IV, located on the southern coast of Santa Catarina, in addition to tests with fragments of charcoal, proposing a new approach on these archaeological remains. This analyses can support archaeological researchers, because, considering that the presence of charcoal is a striking feature in archaeological sites, its analysis could be, not only used for anthracological purposes. The results demonstrated the efficacy of the method, wherein it was possible to identify phytoliths presents in the fragments of charcoal, what could be a good tool in archaeological research.