Automatically translated preprints from the Chinese arXiv (ChinaXiv).
Showing 50 of 1495 papers
Background Frailty is an age-related geriatric syndrome, and the prevalence of frailty among older adults in China is relatively high and shows an increasing trend year by year. Obesity is closely associated with the occurrence and development of multiple diseases, but its relationship with frailty …
Obesity is frequently complicated by metabolism-related diseases, which constitute important etiological factors or risk factors and are associated with adverse prognosis; effective weight reduction can improve or even remit these comorbidities. Lifestyle intervention alone demonstrates suboptimal e…
The design of lightweight radiation shielding structures represents a key scientific challenge in fields such as nuclear energy and deep space exploration. Due to functional requirements, these shielding structures are often partially open, rendering classical design approaches difficult to apply di…
Background: As an emerging technology, large language models are gradually gaining recognition and application among the general public. Thyroid cancer is a common type of malignant tumor in China, and patients have a high demand for thyroid cancer popular science information; however, there is stil…
Compared with conventional thermal neutron reactors, fast reactors exhibit higher fuel enrichment and a harder neutron spectrum, while the Doppler broadening effect, primarily associated with U-238, is weaker during reactor operation. Consequently, the impact of core structural deformation on reacti…
This study investigated the community structure and functional differences of generalist and specialist fungal species in the soil and roots of Mongolian pine forests and their relationships with soil physicochemical properties, aiming to reveal the key microbiological mechanisms influencing ecosyst…
The Babusha area is situated at the intersection of the Qinghai-Tibet Plateau ecological barrier and the Northern sand prevention belt, serving as a frontline position against the southward encroachment of the Tengger Desert. Assessing changes in its ecological environmental quality holds certain gu…
Nitrous oxide (N2O) is one of the important greenhouse gases in the atmosphere, exerting significant influence on global warming. Land use change is a critical factor affecting N2O emissions, particularly in ecologically fragile semi-arid regions where the underlying mechanisms are more complex. How…
In desert environments, soil water-heat conditions are key factors affecting the healthy growth of sand-fixing plants in vegetation-based sand-fixation projects. Vertical pipe surface drip irrigation is a novel water-saving and temperature-control conservation technology proposed to alleviate the co…
Current biodiversity loss exerts adverse effects on ecosystem services, and investigating the spatiotemporal evolution characteristics of land use and habitat quality in the Sanjiangyuan region holds significant importance for ecological conservation and restoration within the area. This study emplo…
This study investigated the response of cotton growth to soil temperature under phosphorus fertilizer drip application, aiming to explore the role and mechanism of soil temperature in regulating cotton root growth to improve phosphorus fertilizer use efficiency. A pot experiment was conducted with t…
Integrating crop irrigation water into the global trade chain and analyzing its sustainability is crucial for ensuring water resources and food security. Constrained by the contradiction between economic benefits and water resource development and utilization, the sustainability of virtual water foo…
Water resources constitute the foundation for maintaining ecosystem equilibrium and sustaining human livelihoods and economic development. Simulation of hydrological processes in arid and semi-arid ecosystems can enhance the effective utilization of local water resources. This study evaluates the ap…
To investigate the surface deformation characteristics and deformation prediction of giant landslides on both banks of the upper Yellow River from Longyangxia to Jishixia, this study selected the Xijitan giant landslide in the Guide area of the upper Yellow River as the research area. The Small Base…
To obtain more accurate precipitation distribution information in remote regions, this study combines the high-resolution capability of radar with the large-scale detection advantage of satellite to obtain high-precision Quantitative Precipitation Estimation (QPE) analysis products through fusing ra…
Given that pixel-level classification struggles to accurately identify glacier changes when spectral features are similar, particularly in debris-covered areas where spectral characteristics highly resemble surrounding mountains and rocks, resulting in low extraction accuracy, this study takes the Y…
Evaluation of climate comfort in the Shaanxi-Gansu-Ningxia region holds significant importance for the development of regional red tourism resources and the promotion of ecological civilization construction. Utilizing meteorological element data including daily average temperature, wind speed, and r…
Evapotranspiration, as a critical component of the water cycle, is essential for water resource regulation and ecological protection, playing a particularly important role in water consumption and redistribution in arid regions. This study takes the Aksu River Basin as the research area, utilizing M…
The Loess Plateau is a climate-sensitive region in China, and studying the spatiotemporal variation characteristics of its accumulated temperature facilitates a comprehensive understanding of the thermal resource conditions on the Loess Plateau against the backdrop of climate warming. Based on daily…
Constructing ecological security patterns and accurately identifying key areas for ecological restoration constitute the prerequisite and guarantee for advancing territorial ecological restoration. As a national key water source conservation area and an ecological security barrier in the upper reach…
Using hourly precipitation observation data from summers 2010–2021 in the Hedong region of Gansu, 50 regional short-duration heavy rainfall weather processes were selected to analyze the intensity, temporal and spatial distribution characteristics of short-duration heavy rainfall from the perspectiv…
Ammopiptanthus nanus is an endangered evergreen shrub endemic to the desert regions of Central Asia, possessing extremely strong cold and drought resistance. It serves as a model species for investigating plant adaptation mechanisms to extreme environments and is a key focus of research on desert bi…
Daily precipitation data from ground meteorological stations across the eastern Tibetan Plateau in 2022 were selected to evaluate precipitation datasets from the China Meteorological Administration Multi-source Precipitation Analysis System (CMPAS), the China Meteorological Administration Land Data …
Invasive plants have severely impacted global ecosystem functions and biodiversity. However, existing research primarily focuses on the monitoring and classification of single temporal phases of plants, with relatively few studies on multi-temporal continuous monitoring of key phenological stages, p…
Salinization in downstream irrigation districts of arid region river basins exacerbates soil degradation, crop yield reduction, and river water salinization, constraining the stability of agricultural production and ecological environments. Its formation is influenced by groundwater depth and improp…
Sand ridges, as the fundamental topographic units of deserts, have surface hydrothermal environments at different slope positions that profoundly influence the development and spatial distribution patterns of biological soil crusts. Lichen crusts are widely distributed on desert surfaces; however, h…
Water supply services underpin the survival and development of human society and are critical for advancing ecological civilization construction and high-quality development of river basins in China. This study takes the Yili River Valley in Xinjiang as the research area, and based on statistical ye…
The Precipitation Concentration Index (PCI) effectively characterizes the intra-annual concentration of precipitation and is widely used in related research. Based on monthly precipitation and mean temperature observations from 15 meteorological stations in the Yarlung Tsangpo River (hereinafter ref…
Against the backdrop of gradually decreasing global atmospheric nitrogen deposition, the legacy effects of long-term nitrogen addition on alpine grassland ecosystems remain unclear. Therefore, this study conducted a 16-year controlled experiment in the Bayanbulak alpine grassland in the central Tian…
The sandy lands in the marginal monsoon region of Northeast China are sensitive to climate change and represent ideal sites for investigating the history of aeolian evolution. This study conducted optically stimulated luminescence (OSL) dating analysis of two typical aeolian sediment sections from t…
Investigating the quantitative predictive assessment of climate impacts on vegetation greenness changes in the Qaidam Basin facilitates the coordinated promotion of integrated protection and systematic governance of mountains, rivers, forests, farmlands, lakes, grasslands, deserts, and atmosphere. B…
Litter decomposition plays a crucial role in carbon and nutrient cycling within terrestrial ecosystems, with climatic conditions being the primary determinant of decomposition rates. Currently, research on litter decomposition in alpine grassland ecosystems remains insufficient. To investigate the i…
Using MODIS snow product data, this study investigated the spatiotemporal variation characteristics of the snowmelt period on the Mongolian Plateau from 2003 to 2022, and tracked the movement of the snowmelt line toward higher latitudes at 15-day intervals as well as its response to air temperature.…
High-boron surface water and groundwater exist in the oasis area of Qiemao County, Xinjiang, seriously affecting residents' health. To preliminarily investigate the hydrochemical characteristics and main sources of boron in the oasis area of Qiemao County, 24 water samples (4 surface water and 20 gr…
Farmland in arid regions with sandy loam soil is characterized by low fertility, poor water retention, high infiltration losses, and low crop yields. Elucidating the patterns of soil water movement in sandy loam farmland is of great significance for conserving water resources and increasing crop yie…
In recent years, the dangerous pest Agrilus viduus Kerremans has been discovered in Yili, Xinjiang. Currently, this insect has penetrated into the hinterland of wild fruit forests, causing damage to wild apples and wild apricots. Through field surveys, fixed-point observations, and indoor rearing, t…
To investigate the mineralization characteristics of organic fertilizer combined with medium and trace elements in aeolian sandy soil and its effects on soil organic carbon fractions, laboratory incubation and field experiments were conducted to examine the decomposition and residual rates of organi…
Cellular senescence is a cellular response closely associated with genotoxic stress that plays a critical role in determining cell fate following irradiation exposure. Primary cilia are sensory organelles located on the cell surface that detect and transmit diverse signaling cues. However, the relat…
This study investigates the structural, physical, and gamma-ray shielding properties of a borate-based glass system modified by varying amounts of cement dust (0–20 wt. %). Five glass samples were obtained using the fast quenching method, then characterized using the measured bulk density and Fourie…
Small reactors impose demands for the miniaturization of heat exchange equipment. Addressing the miniaturization requirements of a certain shell-and-tube heat exchanger, a high-performance rectangular microchannel heat exchanger suitable for additive manufacturing technology (additive manufacturing …
The temperature oscillation phenomenon in the upper plenum of a lead-based reactor core constitutes one of the critical factors influencing the safe and stable operation of nuclear power plants, and its accurate depiction holds significant importance for analyzing thermal pulsation mechanisms. Numer…
Hexagonal boron nitride possesses a layered structure composed of hexagonal rings similar to graphene, thereby exhibiting excellent mechanical properties and thermal conductivity, and has attracted widespread attention in numerous application fields. In view of the high energy consumption issues ass…
Humans often need to make predictions based on current situations to guide subsequent behavior. However, researchers currently debate vigorously regarding whether predictable or unpredictable items yield better memory performance. In this study (Experiment 1: item recognition; Experiment 2: associat…
Amidst increasingly prominent global intergroup conflicts, psychological time framework represents a novel pathway to facilitate intergroup helping behavior, capable of effectively mitigating social conflicts and promoting resource redistribution. Compared to conventional single time points, constru…
Radioactive targeted drugs have attracted considerable attention as an important therapeutic modality for malignant tumors, owing to their precise tumor-targeting capability and potential efficacy against tumors resistant to conventional treatments. 225Ac has emerged as a highly promising radionucli…
This paper presents a novel pixel chip readout scheme: the Region-of-Interest Readout Circuit (ROIRC), which is designed for large area, large array pixel chips and Gas Pixel Detector (GPD). This design employs a sentinel pixel detection strategy, enabling rapid identification and prioritized readou…
[Objective] To explore assessment methods for perceived social support among adolescents based on Weibo text and analyze its demographic differential characteristics. [Methods] Python was employed to crawl Weibo texts (approximately 300,000 posts) from adolescents aged 12–18 nationwide, construct a …
Due to the current lack of devices and methods for measuring internal contamination caused by radionuclides in wounds that may occur during spent fuel reprocessing and radioisotope production, we developed a new non-contact measurement system for radionuclide-contaminated wounds featuring improved r…
Austenitic stainless steels have been extensively utilized as key structural components in nuclear reactors, yet they exhibit a strong tendency to undergo swelling under neutron irradiation, which consequently deteriorates their mechanical performance. Hence, reliable prediction of the swelling evol…
Based on the general thermodynamic analysis of Polanyi adsorption potential, the adsorption potential condition for superconductors is obtained exactly by using the quantum state equation we presented. Because this adsorption potential results in changes of electron concentration, temperature and pr…
