bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical Simulation Analysis of Flow Control Effect of Harbor Seal Whisker Model Under Different Reynolds Numbers
Authors: Wu Yaer , Li Dongfeng , Chen Nan , Rong Qinhuan , Mo Kui , Zhang Heshun , Bai Fuqing , Hu Jianyong , Wei Ziyang , Xuan Zhentao 
Published: January 2025

Abstract
This article uses CFD calculations to numerically simulate the wake field of the spotted seal whisker model, combines the plane vorticity distribution diagrams of the cylindrical and elliptical cylinder models and analyzes according to the criteria, and observes the tail flow of the spotted seal whisker structure model under different Reynolds number conditions. The flow field is used to reveal its flow characteristics and flow control effect. It can be seen that this structure can reduce drag and suppress lift fluctuations, and has better effects under low Reynolds number conditions.
Design and Control of Tendon-Driven Dexterous Hands
Authors: Guo Minggao , Liu Yang , Wang Yage 
Published: January 2025

Abstract
Based on the structural characteristics of the human hand, a tendon-driven dexterous hand was designed. Starting from the transmission and structure aspects of the dexterous hand, the structural design scheme of the dexterous hand under tendon-driven transmission was studied. Then, the kinematics of the fingers were derived, and finally, grasping experiments of the dexterous hand were conducted. The results showed that the designed dexterous hand could achieve stable and reliable grasping of regular objects.
Optimization of Damping Groove Parameters of Swashplate Plunger Pump Based on CATIA Secondary Development
Authors: Tan Jianping , Han Kunpeng , Liu Yao , Huang Xiaoxuan , Lin Erte 
Published: January 2025

Abstract
In order to improve the performance of the plunger pump, aiming at the problems of flow pulsation and pressure overshoot of the plunger pump, a new compound slot flow distribution buffer tank structure is proposed. CATIA modeling software is used to obtain the overflow area curve of the valve plate through Boolean operation. Through the secondary development of the software, the overflow area curve of the valve plate under different parameter values can be obtained efficiently. Then the pressure, flow and other related parameters of the pump can be observed in the AMESim model of the plunger pump. The results show that the flow pulsation and pressure overshoot can be effectively reduced when the depth Angle is 7°, the width Angle is 90° and the composite aperture is 0.8 mm.
Simulation of the Back-Side Cracking of Nickel-Based Superalloy Turbine Blades with Eddy Current Testing
Authors: Yuan Jia , Lei Zihao , Xue Xinhai , Chen Hongen , Wen Guangrui , Su Yu , Chen Xuefeng 
Published: January 2025

Abstract
Cracks may occur in the back of turbine blades during the manufacturing process, which may cause potential safety hazards to the aero-engine. To design proper probes for detecting the back-side crack, this paper builds a finite-element model for eddy current detection of cracks on the back of the nickel-based superalloy plate, which are often used to produce blades. The influence of coil parameters and crack parameters on eddy current signal is investigated. The results show how to choose the proper parameters of a coil and how crack parameters affect eddy current signals.
Research on Fatigue Life Analysis of Non-standard Socket Welding Fittings and the Influence of the Weld Gap on the Weld Stress Distribution
Authors: Han Zhichao , Shen Mengling , Chang Haijun , Rong Zhishen , Xing Cangmei , Zhang Weidong 
Published: January 2025

Abstract
In this paper, the socket welding fittings, containing three kind of different weld gaps, have been welded by the tee fittings and the nozzles. Fatigue tests have been carried out, and the fatigue life has been obtained to investigate the influence of the nozzle offset. Then the macro metallographic tests have been conducted, and the real shape of the weld in the socket welding fittings has been observed and measured. Finally, finite element models of the three kinds of socket welding fittings have been established, the weld numerical simulation has been conducted, and the residual stress of the weld has been obtained. Besides, the alternating stress distribution of the weld has been calculated based on the residual stress and the cyclic loadings. According to the test results and finite element analysis, it can be found that under the condition of the current welding process, the nozzle offset is allowed, and the maximum allowable offset degree is 33%. In this case, the fatigue life of non-standard socket welding fittings will not decrease, and the non-standard socket welding fittings can be considered to meet the design requirements and no need to repair or scrap.
Mathematical Analysis of Tooth Contact in a Drum Worm Pair
Authors: Li Shuangcen , Luo Shiqiang 
Published: January 2025

Abstract
A planar internal gear enveloping drum worm (PIGEDW) reducer is designed for analyzing its contact area. In this paper, the mathematical analysis method of tooth contact is proposed to analyze its contact pattern. Firstly, the PIGEDW mathematical model is created on the basis of the gear meshing theory. Secondly, the simulation model of PIGEDW tooth surface contact is established by MATLAB. Finally, based on the previous step, a parametric study is carried out to investigate the influences of transverse module, radius of the main basic circle and inclination angle of the generating plane on the worm gear contact area. The results show that appropriate change of design parameters is conducive to improving the carrying capacity of PIGEDW. The present study offers a theoretical foundation for the subsequent enhancement of PIGEDW gear.
Vortex-Induced Vibration Analysis of a Two-Degree-of-Freedom Circular Cylinder Under Pulsating Flow
Authors: Li Yongqi , Liu Xia , Cheng Yujun , Duan Derong 
Published: January 2025

Abstract
The vortex-induced vibration of a circular cylinder under pulsating flow was simulated numerically using Ansys software. The beat phenomena were caught and effects of pulsating frequency and pulsating amplitude on vortex-induced vibration were discussed. Results indicated that as the pulsation frequency increases from 0.2 Hz to 0.4 Hz, the multi-frequency phenomenon of cross-flow displacement was obvious, and the trajectory of the cylinder gradually became axisymmetric. As the pulsation amplitude increased from 0.2 to 0.4, the transverse flow amplitude increases significantly from 0.035 to 0.04. and its motion trajectory became more complex. In addition, the lift coefficient and drag coefficient increase by a maximum of 75.14% and 58.70%, respectively. It also provided a basis for vortex-induced vibration of offshore engineering equipment.
Shipboard Lifeboat Design Based on 3D Printing Technology
Authors: Yu Xintao , Teng Xianbing , Zhang Zhaohao , Chen Hao , Huang Wanqi , Wang Jie 
Published: January 2025

Abstract
During the voyage of ocean-going vessels, lifeboats and other life-saving types of equipment are the survival of the crews. At present, there is still a lot of room for improvement in the structure of lifeboats, supporting facilities, production materials, ease of operation, etc. The article summarizes the development history of lifeboats and their slip trajectories based on the development of ocean-going vessels. The article summarizes the shortcomings of the lifeboat and its sliding trajectory based on the development history of ocean-going shipborne lifeboats and proposes the use of 3D printing technology to carry out the model printing of the lifeboat and ancillary facilities, and the use of the printed model to carry out experiments repeatedly to explore, and to find a way to make the boat from the high altitude to reach the surface of the water caused by the smallest impact effect of the angle, which greatly reduces the impact of the lifeboat into the water. The impact force of the lifeboat into the water is greatly reduced. The aim is to improve the survivability of ocean-going vessels at sea and increase the chances of survival of the crew.
Simulation Study of Airbag Deployment in an Optoelectronic Buoy
Authors: Liu Kang , Qiu Yafeng , Li Qianwei 
Published: January 2025

Abstract
In order to study the underwater inflation process of a photoelectric buoy used for torpedo guidance, a numerical analysis model of gas cylinder inflation was established based on the gas control volume method. Relevant calculation parameters were set, and LS-DYNA was used to simulate the underwater inflation process of the airbag of the photoelectric buoy. Furthermore, the effects of parameters such as depth and inflation tube diameter on the deployment of the airbag were analyzed. The results indicate that the deployment time of airbags is significantly influenced by depth and the diameter of the inflation tube; the internal pressure of the airbag is less affected by depth, and is more affected by the diameter of the inflation tube, which can easily cause safety issues, the design size of the inflation tube diameter of the photoelectric buoy should be within 8 mm.
Simulation Study of the Magnetic Gradient Method for Signal Detection Outside Buried Bimetallic Pipes
Authors: Qing Chun , Zhang XiuMing , Pan Hong , Gao Yue , Li Junlin , Ren Tao , Li Yujia 
Published: January 2025

Abstract
Pipeline transportation is one of the most crucial methods for oil transportation, and in recent years, bimetallic pipelines have found increasing applications in the oil industry. However, buried pipeline operations over extended periods have brought about numerous issues that urgently need to be addressed. The magnetic gradient method utilizes the natural geomagnetic field as the excitation magnetic field source for pipelines. By employing a specially arranged array of magnetic flux gates, it enables non-excavation detection of corrosion defects in the active pipeline body, swiftly identifying the defect’s location. This paper focuses on the issue of corrosion leakage in buried bimetallic pipelines and validates the feasibility of weak magnetic detection technology based on the magnetic gradient method in the non-excavation detection of bimetallic pipelines. According to the simulation results analysis, the magnetic signal in the magnetic gradient detection method exhibits a peak-and-valley pattern at the defect location, consistent with the results obtained from the magnetic gradient method detection.
The Origin, Development and Innovation of Software-Defined Telemetry Systems
Authors: Wang Wanli , Li Yiyong , He Rong , Zhang Cheng , Wang Kai , Gao Junxing 
Published: January 2025

Abstract
In order to promote the emergence of better service function of telemetry system, this paper explores the new paradigm of software defined telemetry system. First of all, the software-defined telemetry system is summarized and analyzed to clarify the software definition, the development of telemetry system and the transmission of new paradigm, and explore the emerging style, application mechanism and design architecture of new paradigm from the present source. Secondly, from the perspective of development, innovation and topology, the concept definition, demand analysis, advantage and function and technology application are explored. Finally, based on the three aspects of the integration system matching, the solidified viability and the evaluation of comprehensive performance, we can provide basic reference for the design, development and finalization of new equipment.
Research on the Effect of Fan Rotation Vibration on Hard Disk Drive Performance
Authors: Gong Baolong , Zhang Hailong , Lu Jilei , Zong Bin 
Published: January 2025

Abstract
In response to the problem of multiple composite vibration physical fields caused by high-speed rotation of fans on hard drive disk, this paper conducts in-depth research using testing and simulation methods, and optimizes vibration reduction design from the perspectives of chassis, airflow field, fans, etc. The main conclusions are as follows: 1. the optimal distance between the fan and the hard drive is 70 mm. 2. among the many optimization measures, adding honeycomb mesh and sound-absorbing foam have the most significant effect, which can improve the performance of hard drives by about 15%. This study plays an important guiding role in server architecture design, effectively guiding the RV vibration reduction design of mechanical hard disk configuration models, minimizing the vibration impact of high-speed rotating fans on the hard disk, and improving system vibration resistance and stability.
Isoperimetric inequalities for the fractional composite membrane problem
Authors: Ghosh Mrityunjoy 
Published: January 2025

Abstract
In this article, we investigate some isoperimetric-type inequalities related to the first eigenvalue of the fractional composite membrane problem. First, we establish an analogue of the renowned Faber–Krahn inequality for the fractional composite membrane problem. Next, we investigate an isoperimetric inequality for the first eigenvalue of the fractional composite membrane problem on the intersection of two domains - a problem that was first studied by Lieb (Invent Math 74(3):441–448, 1983) for the Laplacian. Similar results in the local case were previously obtained by Cupini–Vecchi (Commun Pure Appl Anal 18(5):2679–2691, 2019) for the composite membrane problem. Our findings provide further insights into the fractional setting, offering a new perspective on these classical inequalities.
Acute effects of psilocybin on attention and executive functioning in healthy volunteers: a systematic review and multilevel meta-analysis
Authors: Yousefi P. , Lietz Morten P. , O’Higgins F. J. , Rippe R. C. A. , Hasler G. , van Elk M. , Enriquez-Geppert S. 
Published: January 2025

Abstract

Rationale
Psilocybin shows promise for treating neuropsychiatric disorders. However, insight into its acute effects on cognition is lacking. Given the significant role of executive functions in daily life and treatment efficacy, it is crucial to evaluate how psilocybin influences these cognitive domains.

Objectives
This meta-analysis aims to quantify the acute effects of psilocybin on executive functions and attention, while examining how dosage, timing of administration, cognitive domain, and task characteristics moderate these effects.

Methods
A systematic review and multilevel meta-analysis were conducted on empirical studies assessing psilocybin’s acute effects on working memory, conflict monitoring, response inhibition, cognitive flexibility, and attention. Effect sizes for reaction time (RT) and accuracy (ACC) were calculated, exploring the effects of timing (on-peak defined as 90–180 min post-administration), dosage, cognitive function categories, and task sensitivity to executive functions as potential moderators.

Results
Thirteen studies (42 effect sizes) were included. In the acute phase, psilocybin increased RTs (Hedges' g = 1.13, 95% CI [0.57, 1.7]) and did not affect ACC (Hedges' g = -0.45, 95% CI [-0.93, 0.034]). Effects on RT were dose dependent. Significant between-study heterogeneity was found for both RT and ACC. Task sensitivity to executive functions moderated RT effects. Publication bias was evident, but the overall effect remained significant after adjustment for this.

Conclusions
Our meta-analysis shows that psilocybin impairs executive functions and results in a slowing down of RT. We discuss potential neurochemical mechanisms underlying the observed effects as well as implications for the safe use of psilocybin in clinical and experimental contexts.
Empowering PET imaging reporting with retrieval-augmented large language models and reading reports database: a pilot single center study
Authors: Choi Hongyoon , Lee Dongjoo , Kang Yeon-koo , Suh Minseok 
Published: January 2025

Abstract

Purpose
The potential of Large Language Models (LLMs) in enhancing a variety of natural language tasks in clinical fields includes medical imaging reporting. This pilot study examines the efficacy of a retrieval-augmented generation (RAG) LLM system considering zero-shot learning capability of LLMs, integrated with a comprehensive database of PET reading reports, in improving reference to prior reports and decision making.

Methods
We developed a custom LLM framework with retrieval capabilities, leveraging a database of over 10 years of PET imaging reports from a single center. The system uses vector space embedding to facilitate similarity-based retrieval. Queries prompt the system to generate context-based answers and identify similar cases or differential diagnoses. From routine clinical PET readings, experienced nuclear medicine physicians evaluated the performance of system in terms of the relevance of queried similar cases and the appropriateness score of suggested potential diagnoses.

Results
The system efficiently organized embedded vectors from PET reports, showing that imaging reports were accurately clustered within the embedded vector space according to the diagnosis or PET study type. Based on this system, a proof-of-concept chatbot was developed and showed the framework’s potential in referencing reports of previous similar cases and identifying exemplary cases for various purposes. From routine clinical PET readings, 84.1% of the cases retrieved relevant similar cases, as agreed upon by all three readers. Using the RAG system, the appropriateness score of the suggested potential diagnoses was significantly better than that of the LLM without RAG. Additionally, it demonstrated the capability to offer differential diagnoses, leveraging the vast database to enhance the completeness and precision of generated reports.

Conclusion
The integration of RAG LLM with a large database of PET imaging reports suggests the potential to support clinical practice of nuclear medicine imaging reading by various tasks of AI including finding similar cases and deriving potential diagnoses from them. This study underscores the potential of advanced AI tools in transforming medical imaging reporting practices.
Concentration of Povidone-Iodine Pocket Irrigation in Implant-Based Breast Surgery: A Scoping Review
Authors: Anthony Ojochonu D , Seth Ishith , Rozen Warren M 
Published: January 2025

Abstract

Background
In implant-based breast surgery, microbial contamination of implant surfaces predisposes complications such as overt periprosthetic infection and has been linked to capsular contracture (CC). Anti-microbial practices, including povidone-iodine (PVP-I) breast pocket irrigation, are routinely employed to minimise these risks. No standardised protocol for using this antiseptic exists, particularly concerning the ideal concentration. This review investigates how PVP-I concentration affects outcomes in these procedures while highlighting research gaps.

Methods
Using PRISMA-ScR guidelines, a systematic search was conducted across MEDLINE, Embase, Scopus, and PubMed databases from their inception to June 2024. Studies were screened using pre-determined criteria for inclusion. The methodological quality of relevant studies was assessed using the MINORS tool. Data regarding basic characteristics, PVP-I irrigation implementation, and outcomes (primarily periprosthetic infection and CC) were extracted for analysis.

Results
Nine articles, primarily observational studies, and retrospective analyses were included. These mainly focused on breast augmentation with a few including reconstruction. There was considerable heterogeneity in surgical techniques, and reported PVP-I concentrations ranged from 4 to 20%. This was further confounded by frequent mixing of irrigation solution with antibiotics. Although infection and CC rates were frequently reported, most studies did not specify outcome data for patients receiving PVP-I irrigation.

Conclusions
While PVP-I irrigation is extensively used in implant surgeries, the current evidence base is insufficient to determine the optimal concentration and application techniques. This review underscores the need for further detailed research to establish evidence-based guidelines for PVP-I use, aiming to improve patient care and surgical outcomes in breast surgery.

Level of Evidence III
This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
Folate metabolism in myelofibrosis: a missing key?
Authors: Cerreto Giacomo Maria , Pozzi Giulia , Cortellazzi Samuele , Pasini Livia Micaela , Di Martino Orsola , Mirandola Prisco , Carubbi Cecilia , Vitale Marco , Masselli Elena 
Published: January 2025

Abstract
Folates serve as key enzyme cofactors in several biological processes. Folic acid supplementation is a cornerstone practice but may have a “dark side”. Indeed, the accumulation of circulating unmetabolized folic acid (UMFA) has been associated with various chronic inflammatory conditions, including cancer. Additionally, by engaging specific folate receptors, folates can directly stimulate cancer cells and modulate the expression of genes coding for pro-inflammatory and pro-fibrotic cytokines.
This evidence could be extremely relevant for myelofibrosis (MF), a chronic myeloproliferative neoplasm typified by the unique combination of clonal proliferation, chronic inflammation, and progressive bone marrow fibrosis. Folate supplementation is frequently associated with conventional or investigational drugs in the treatment of MF-related anemia to tackle ineffective erythropoiesis. In this review, we cover the different aspects of folate metabolism entailed in the behavior and function of normal and malignant hematopoietic cells and discuss the potential implications on the biology of myelofibrosis.
The limiting distribution of a bivariate random vector under univariate truncation
Authors: Durante F. , Ignazzi C. , Jaworski P. 
Published: January 2025

Abstract
The dependence structure in the tails of bivariate random vectors is studied by means of the copula representation. In particular, asymptotic results for the distribution of a random pair under univariate truncation is proved in the spirit of multivariate extensions of the Pickands-Balkema-de Haan Theorem.