ChinaRxiv · Open Access in English
Translated papers from the Chinese Preprint site, Chinaxiv
Showing 50 of 1739 papers
We present a polarization study of 25 globular cluster (GC) pulsars observed with the Five-hundred-meter Aperture Spherical radio Telescope (FAST), including 15 profiles measured for the first time. The pulse width–period relationships for millisecond pulsars (MSPs) in GCs follow power-law indices o…
The TM020 mode damped cavity enables compact accelerators but suffers from severe electromagnetic field leakage due to coupling-slot misalignment and structural asymmetry. We propose an integrated narrowband filter based on RLC circuit design to selectively suppress TM020 leakage while preserving hi…
Background Autoimmune thyroiditis (AIT) is the leading cause of thyroid dysfunction, severely impacting patients' quality of life. In recent years, dietary patterns have attracted considerable attention as a potential approach to modulate immunity and metabolism; however, systematic summaries of the…
While traditional gamma-gamma density (GGD) logging technology is widely utilized, its potential environmental risks have prompted the development of more environmentally friendly neutron-gamma density (NGD) logging technology. However, NGD measurements are influenced by both neutron and gamma radia…
Micro-expressions refer to brief facial actions that individuals unconsciously display when attempting to suppress genuine emotions. Owing to their non-invasive nature, they possess significant application value in domains such as national security and public security. To address challenges includin…
Vehicle insurance pricing, as one of the core issues in actuarial science, impacts the profitability and capital liquidity of insurance companies. This literature review briefly elaborates on the development of motor insurance across different regions and discusses historical research related to mot…
Powder-bed metal additive manufacturing frequently suffers from high porosity issues arising from gas entrapment and keyhole instability. This study presents, for the first time, a breakthrough methodology: in-situ molten pool modulation via low-pulse-energy coaxial laser shock. By coupling an addit…
Contemporary society has witnessed an increasing tendency for individuals to "put a price tag" on themselves during mate selection. This study conceptualizes this phenomenon as a computational mindset in mate choice and proposes that in high relational mobility environments where interpersonal relat…
The Shanghai Proton Therapy Device (SAPT) is the first domestic proton therapy demonstration system. The rotating gantry constitutes a critical component of the proton therapy apparatus, achieving an isocentric accuracy of ±0.275 mm that surpasses international mainstream equipment, thereby requirin…
We present a new method for structural sequence analysis grounded in Algorithmic Information Theory (AIT). At its core is the Ladderpath approach, which extracts nested and hierarchical relationships among repeated substructures in linguistic sequences---an instantiation of AIT’s principle of descri…
Pre-oxidation is a critical step in the preparation of polyacrylonitrile-based (PAN) carbon fibers, and gamma irradiation represents an effective approach for optimizing the thermal pre-oxidation process. However, the effects and underlying mechanisms of gamma irradiation and thermal treatment seque…
Psychobiography focuses on the study of extraordinary individuals, and its shift toward the life courses of ordinary individuals depends on the creation and practice of psychobiographical therapy. The theoretical core of psychobiographical therapy is based on the concept of "prototype scenario" prop…
CANDLE reactors are a type of fast reactor that burn depleted uranium or natural uranium without chemical reprocessing. One of the crucial challenges in practice is high material radiation damage for the CANDLE reactor. The Double Solitary Waves Reactor (DSWR), with double separated ignition zones, …
To satisfy the teaching and research demands for reactors in general universities, point reactor neutron kinetics, xenon and samarium poisoning, temperature feedback, and lumped-parameter thermal-hydraulic dynamic models for TRIGA (Training, Research, Isotopes, General Atomic) reactors—primarily uti…
Mathematical reasoning presents a significant challenge for Large Language Models (LLMs) as it requires ensuring the correctness of each reasoning step. Researchers have been strengthening the mathematical reasoning abilities of LLMs through supervised fine-tuning, but due to the inability to suppre…
Improvisational behavior represents a behavioral pattern characterized by both immediacy and creativity. However, research that elaborates on the generation mechanism of improvisational behavior by incorporating its essential nature remains insufficient. To address this gap, the present study integr…
Boron neutron capture therapy (BNCT) is an advanced targeted radiotherapy that exploits the high affinity of the 10B nucleus for capturing neutrons. This therapy involves the use of neutron beams in combination with boron compounds, which preferentially accumulate in cancer cells. Recent advancement…
Liquid metal heat pipes are important thermal conductive components for space exploration vehicles, exhibiting excellent heat transfer capabilities and isothermal performance. However, during space exploration missions, sodium heat pipes may operate under conditions below or even far below the desig…
Background: Alzheimer's disease (AD) is a complex neurodegenerative disease that imposes a heavy burden on patients and their families. In recent years, clinical studies on traditional Chinese medicine preparations for AD treatment have been increasing continuously, yet the evidence base remains unc…
To monitor and analyze the beam loss characteristics during the operation of Hefei Light Source, a high time-resolution synchronous monitoring system for beam loss and bunch position was developed based on a scintillator detector, strip-electrode beam position monitor (Beam Position Monitor, BPM), a…
To mitigate dark pulses and achieve low-background-level measurements, liquid scintillation counters (LSCs) are generally equipped with two or three photomultiplier tubes (PMTs) for coincidence measurements. However, traditional identification methods in LSC only utilize the anode pulse from a singl…
Accurate velocity determination of stored ions in storage rings plays a key role for nuclear mass measurements using the technique of B$\rho$-defined isochronous mass spectrometry (Bρ-IMS). However, the accuracy and precision of the ion's velocity are seriously deteriorated by the non-isochonicity o…
A fractional-order proportional-derivative controller is designed to address bifurcation issues in a dual-time-delay fractional-order predator-prey model. By selecting different delays as bifurcation parameters, the stability and Hopf bifurcation conditions of the controlled system are derived. The …
Objective: This study explored the mechanism by which observing peers' adverse experiences influences distress disclosure of negative information through two progressive studies. Methods: Study 1 (N=218) constructed a moderated mediation model to analyze the relationships among stress, self-esteem, …
Accurate calibration of the beam phase (the phase of beam arrival relative to the cavity accelerating field) is essential for maintaining the stability and efficiency of linear accelerators. Conventional offline phase-scan methods, typically performed during commissioning or maintenance, require con…
In current work, the fission property of $^{180}$Hg is investigated based on the Skyrme density functional theory (DFT). The impact of the high-order hexadecapole moment (q$_{40}$) is found at large deformations. With the q$_{40}$ constraint, a smooth and continuous potential energy surfaces (PES) c…
Leakage neutron spectra from a pure 238U slab sample (dimensions: 100 mm × 100 mm × 20 mm) bombarded by broad-spectrum neutrons were measured at 0° using the time-of-flight method. The experiment was carried out at the Radioactive Ion Beam Line of the Heavy Ion Research Facility in Lanzhou at the In…
We present the results of an experiment conducted to measure cosmic-ray muons and muon-induced fluxes at the China Jinping Underground Laboratory. Utilizing a 28-liter 0.5% gadolinium-doped liquid scintillator detector, which operated stably for 412 days in a 1-meter-thick polyethylene shielding, we…
As the key technology of space exploration, space power has always been a research interest of international researchers. A lot of research work has been carried out around the world for the space nuclear reactor using heat pipe, liquid metal and gas cooling method. With the development of molten sa…
Since the restoration of the lawyer system in 1979, the Lawyer Law has undergone four revisions, and the current fifth revision has attracted widespread attention from the public, particularly from the legal profession. This article focuses on analyzing important issues existing in lawyer management…
Cardiovascular diseases (CVDs) have become one of the leading causes of mortality globally and in China. With lifestyle changes and population aging, the prevalence of CVDs continues to rise, posing substantial challenges to public health. Primary care plays a vital role in the prevention and manage…
A new Monte Carlo optimization (MCO) method named Hybrid Adaptive Response Surface Methodology Genetic Algorithm (RSM-GA) Monte Carlo Optimization (HRG-MCO) is proposed to address the strong empirical dependence and low efficiency of global multi-parameter optimization in traditional neutronics desi…
The focusing of pulsed neutrons can increase neutron flux, reduce sample volume, and enable access to smaller scattering angles. Consequently, it represents a critical challenge for next-generation spallation neutron sources. The primary difficulty stems from the inherent chromatic aberration of whi…
GlobalNavigation Satellite System Reflectometry,GNSS-R is an effective Earth observation technique that retrieves land surface parameters by analyzing reflected navigation satellite signals. Historical studies indicate that conventional GNSS-R systems primarily employ a single polarization configura…
As an alternative gravitational theory to General Relativity (GR), Conformal Gravity (CG) has recently been successfully verified by observations of Type Ia supernovae (SN Ia) and the rotation curves of spiral galaxies. The observations of galaxies only pertain to the non-relativistic form of gravit…
As an alternative gravitational theory to General Relativity (GR), Conformal Gravity (CG) can be verified through astronomical observations. Currently, {Mannheim and Kazanas have provided vacuum solutions for cosmological and local gravitational systems, and these solutions may resolve the dark matt…
Due to its excellent heat transfer performance and compact structure, the printed circuit heat exchanger (PCHE) has become the mainstream heat exchange equipment between the secondary circuit of the supercritical carbon dioxide Brayton cycle and the primary circuit of the lead-cooled fast reactor. D…
In this work, we report a scintillator used for neutron/gamma discrimination, which consists of a polyvinyltoluene matrix loaded with monomers of dimethoxydiphenylsilane (DDS), and fluor dyes, namely 2,5-diphenyloxazole and 7-diethylamino-4-methylcoumarin as the primary fluorophore and wavelength-sh…
Under the national strategy of forging a strong sense of community for the Chinese nation, psychological crisis intervention for ethnic minority students in Yunnan vocational colleges must transcend traditional psychological paradigms and shift toward the deep logic of mutual construction between cu…
Cs2LiYCl6: Ce (CLYC) scintillator is sensitive to neutrons within a wide-energy range and has the potential to achieve wide-range neutron energy spectrum measurements. The direct neutron detection performance of a CLYC detector has been realized by utilizing the Back-n white neutron source at China …
【Purpose/Significance】Meritorious scientists have not only made outstanding contributions to the development of major national weapons but also carry the cultural genes of the Republic's excellent scientific and technological traditions. Investigating the knowledge evolution throughout their life co…
This study investigates neutron differential scattering cross sections off even Gadolinium isotopes (Gd-156, Gd-158, Gd-160) at various energies (1.5, 2.5, 4.1 and 7 MeV), comparing theoretical calculations with evaluations from prominent nuclear data libraries (ENDF/B-VIII.0, JENDL-5 and EXFOR) and…
The application of Sora in the education field presents both opportunities and challenges. On one hand, Sora can empower education to return to its fundamental mission of nurturing individuals: correcting educational alienation, enriching personalized education, and visualizing teaching and learning…
Background: Training rural order-directed medical students is an important measure to alleviate the shortage of rural medical human resources. As of October 2023, three cohorts of order-directed medical graduates have completed their required service obligations. However, there is a lack of systemat…
For over six decades, the violation of parity symmetry has been treated as a foundational fact of modern physics. This article re-examines that conclusion and argues that parity was never violated—because it was never physically there to begin with. Through a structural analysis of the 1957 Wu exper…
Ideological and political education is instrumental in shaping students' humanistic, political, and professional competencies, while also serving as a critical mechanism for cultivating innovative spirit and practical abilities. Principles of Geographic Information Systems constitutes a core curricu…
Planetary surfaces, shaped by billions of years of geologic evolution, display numerous impact craters whose distribution of size, density, and spatial arrangement reveals the celestial body's history. Identifying these craters is essential for planetary science and is currently mainly achieved with…
Background The incidence of diabetes is increasing year by year. China has incorporated the management of type 2 diabetes as an important disease category into community basic health services; however, gaps remain in standardized grassroots diabetes management, particularly regarding quality and cap…
This paper presents a comprehensive analysis of the photometric system of the University of Chinese Academy of Sciences 70 cm Telescope located at the Yan-qi Lake campus of the University of Chinese Academy of Sciences. We evaluated the linearity, bias stability, and dark current of the camera. Util…
To address the installation challenges of a 2-m ring Gregorian telescope system and similar optical systems with a small width-to-radius ratio, we propose a detection method combining local interferometry with a comparison model. This method enhances the precision of system calibration by establishi…
