Linyi City Research Articles

Visualization of integrated failure consequences of hazardous chemical leakage and explosion

Dangerous chemicals are widely present in various aspects of people's lives, but they often pose risks of leakage and explosion during transportation and storage, resulting in severe casualties and property damage. Firstly, this paper proposes a visualization method applicable to comprehensive failure consequences of hazardous chemical storage tanks. This method considers the toxic hazard range of chemical leaks and the blast overpressure injury range of leak clouds and visualizes the comprehensive failure consequences. Secondly, FLACS is employed to simulate a major leakage and explosion accident at Jinyu Petrochemical Co., Ltd. in Linyi City. The simulation reproduces the leakage and explosion processes and verifies the reliability of the simulation results. Finally, the proposed method is used to visualize the comprehensive failure consequences of this accident, providing comprehensive visual results. The method presented in this paper can serve as a theoretical reference for predicting the development of accidents and clarifying their consequences.

Dryopteris mengshanensis (dryopteridaceae) from china: a new species

Dryopteris mengshanensis J. X. Li & X. J. Li, sp. nov. of Dryopteris Adans. belonging to Dryopteridaceae from Tashan mountain of Fei County, Linyi City, China is described and illustrated. It is closer to D. laoshanensis J. X. Li et S. T. Ma but differs for its height (60~78 cm), rhizome apex and stipe base densely covered with dark brown, margin brown, entire narrowly lanceolate scales, the upper middle of the stipe and the rachis densely covered with two types of small scales: 1) dark brown, entire narrowly lanceolate scales and 2) margin toothed, ovate-lanceolate scales. Leaves are ovate, bipinnate, pinnules oblong or rectangular circular, apex obtuse or flat, subentire margin. The lower middle of the rachis and stipe are castaneous, costae and rachiole have two kinds of small scales: 1) margin toothed lanceolate scales and 2) cystiform, apex caudate scales. Sori orbicular, larger, dorsal on both sides of the main vein below the middle of the pinnule, each in a line 4 to 5 pairs, located between the margin and midvein, less near the midvein. Spores perispore with massive ornamentation are very distinct. Bangladesh J. Bot. 53(3): 711-716, 2024 (September) Special

Investigating the Behavioral Intention of Smart Home Systems among Older People in Linyi City

Background: With an aging population and the continuous advancement of smart technology, the Chinese government is exploring smart elderly care models to address the challenges posed by aging. Although smart home systems are viewed as a promising solution, their adoption rate among older people remains low. Objectives: This study aimed to investigate the factors influencing the behavioral intention to use smart home systems among older people in Linyi City, Shandong Province, China. Methods: A literature review revealed a lack of quantitative research on older people’s behavioral intention toward smart home systems based on the Innovation Diffusion Theory. This study developed an extended model based on the Innovation Diffusion Theory, Technology Acceptance Model, and external variables, incorporating eight variables: intergenerational technical support, perceived cost, self-reported health conditions, compatibility, observability, trialability, perceived usefulness, perceived ease of use, and behavioral intention. Results: Analysis of 387 valid questionnaires showed that compatibility and trialability significantly and positively affect perceived ease of use, while self-reported health conditions, perceived ease of use, and perceived usefulness have significant effects on behavioral intention. In addition, perceived cost had a negative influence on behavioral intention. Contributions/Significance: These findings highlight the importance of considering these factors in the design of smart home systems to improve user experience and provide valuable practical guidance to smart home system developers, R&D institutions, and policymakers.

Experts’ Perspectives on Inclusive Governance for Protecting Hot Spring Landscapes in China: Barriers and Implications

Hot spring landscapes offer enticing development prospects for investors in China. However, due to mounting economic pressures and a lack of coordination among various authorities, inclusive governance has proven ineffective in overseeing development projects centered around hot spring landscapes. Consequently, this manuscript delves into the potential for implementing inclusive governance strategies to safeguard hot spring landscapes in China. This study selected Linyi City as its study site due to its location above a fault zone, which has resulted in the presence of numerous hot springs. Additionally, it has been officially classified as a ‘hot spring city in China’ by the Chinese Ministry of Land and Resources. This study employed a semi-structured expert interview to investigate the barriers that stand in the way of applying inclusive governance to hot spring landscapes. Moreover, the interview investigates the implications of the lack of utilization of inclusive governance strategies for hot spring landscapes. The analysis of the results indicates that experts believed that the current protection policies were ineffective due to the existence of a multitude of barriers, such as the existence of deficiencies in the current policies, the multiplicity of management authorities, differences in visions in decision-making, limited public participation, a lack of awareness and trust from the public, a lack of balance in development approaches, and a limited role of science and technology. This resulted in a lack of proper communication and delegation of responsibilities with regard to inclusive governance strategies for protecting hot spring landscapes. Furthermore, the analysis unveiled diverse implications arising from the non-application of inclusive governance strategies, encompassing aspects such as tourism, economics, environment, sociocultural, and sustainability.

Construction of carbon sequestration ecological network in Linyi City based on supply and demand of ecosystem service.

The increasing carbon emissions is one of the important reasons for global warming. As a key area of carbon emissions, carbon sequestration capacity of cities is urgently needed to be improved. Carbon sequestration ser-vices can be transferred between supply and demand areas due to the circulation of atmosphere. With Linyi City as an example, we used the minimum cumulative resistance model to extract the matching path of supply and demand, and constructed a carbon sequestration ecological network. The results showed that the regions with high supply of carbon sequestration services were located in the north and south of the study area, and that current total supply could solve about 60% of the total demand. Although the spatial distribution of supply and demand was uneven, 54% of the areas that could meet the surrounding carbon sequestration demand were still idle. The optimized supply-demand matching paths could maintain good transmission efficiency of material and energy, with lower costs. Paths with strong potential carbon sequestration capacity were located in the central and northwest part of the research area. In the construction of carbon sequestration ecological network, it is necessary to strengthen the protection and restoration of the supply side of carbon sequestration services, realize carbon reduction and strengthen carbon sequestration on the demand side, and optimize the matching path of supply and demand. This method provided services to the demand areas through the oversupply of ecosystem services, optimized the overall resource allocation, which could advance regional carbon sequestration capacity.

The neurological decline and psychological factors caused by coronavirus disease 2019 may be predictors of erectile dysfunction.

Since the outbreak of coronavirus disease 2019, it has had a serious impact on people's physical and mental health. However, in our clinical work, we have found that the erectile function of coronavirus disease 2019 patients with neurological decline was often seriously affected. To further explore the relationship between erectile dysfunction and neurological dysfunction caused by coronavirus disease 2019. We conducted a survey from August 2022 to February 2023 at the First Affiliated Hospital of Anhui Medical University and the Third People's Hospital of Linyi City. A total of 251 subjects with a history of coronavirus disease 2019 infection were included. Symptoms and changes in erectile function after the coronavirus disease 2019 infection were collected and assessed using the International Index of Erectile Function-5 scale and several targeted questions. In this study, we found that in patients infected with novel coronavirus, the proportion of erectile dysfunction was higher in those with neurological manifestations such as olfactory and taste impairment or psychological symptoms such as anxiety. We found that neurological decline and psychological factors were independent and significant risk factors for erectile dysfunction caused by coronavirus disease 2019. Patients with neurological damage or psychiatric symptoms are more likely to have erectile dysfunction, suggesting that the 2019 novel coronavirus may affect erectile function by damaging nerves. This provides a new insight into the mechanism of erectile dysfunction.

Evaluating and simulating the impact of afforestation policy on land use and ecosystem services trade-offs in Linyi, China

Forest can provide multiple benefits, such as supplying a variety of ecosystem services. However, the planet is currently at risk of deforestation as a result of increased urbanization and growing food demand. Countries around the world have introduced a wide range of policies to mitigate this issue. In China, the Linyi City government has launched the cross-county forest credit market transactions (CFCMT) policy, which showcased significant innovations in compliance credits and transaction entities to enhance motivation for afforestation. This study creates a no-policy counterfactual scenario to analyze the woodland growth and ecosystem service trade-offs between 2013 and 2021. The results demonstrate that the woodland grew faster after this policy, with a growth rate 1.78 times higher than that from 2013 to 2017. The areas of woodland growth with the policy are mainly located on the edges of cropland and woodland. The increased woodland primarily originates from cropland conversion, and compared to the no-policy scenario, these growing woodlands have gentler slopes and lower altitudes. After the policy’s enforcement, there were more increases in carbon storage, soil retention, and habitat quality. And ecosystem services showed a more optimizing trend in the direction of synergy at grid and town scales. We also find that larger spatial scales exhibit synergies and less accurately represent trade-off/synergistic change trends. The ecosystem services bundle consisting of carbon stocks, soil conservation and habitat quality showed a significant increase. This study reveals woodland growth and trade-offs among ecosystem services after the implementation of CFCMT policy, offering valuable insights for future afforestation policy optimization and promotion.

Spatiotemporal variation of the major meteorological elements in an agricultural region: A case study of Linyi City, Northern China

<abstract> <p>Evaporation is a key element of the water and energy cycle and is essential in determining the spatial and temporal variations of meteorological elements. In particular, evaporation is crucial for thoroughly understanding the climate variations of a region. In this study, we discussed evaporation, precipitation, and temperature by adopting Linyi City in Shandong Province, China, which is an important agricultural region, as a research case. Linear regression analysis, the empirical orthogonal decomposition function, and the Morlet wavelet function were used to reveal the trends, spatiotemporal modes, and multi-time scale characteristics of the three climate factors and provide a theoretical basis for the efficient use of climate resources in the future development of regional agriculture. Results showed that the precipitation (2.09 mm/a) and temperature (0.04 ℃/a) in Linyi City exhibited a synchronous growth trend. Conversely, evaporation (−6.47 mm/a) showed a decreasing trend and the evaporation paradox because of the considerable decrease in evaporation energy. Regional development of water-consuming agriculture in consideration of global warming is a key point for improving water use efficiency in Linyi City. In terms of spatial distribution, precipitation was dominated by the first mode wherein low precipitation was observed at the early stage, and high precipitation occurred at the late stage. The first mode was supplemented by the second mode wherein an inverse phase change occurred in the southeast-northwest direction. Large interannual fluctuations were observed only in Yinan County. Temperature exhibited a pattern of warming change with high homogeneity. Evaporation demonstrated obvious heterogeneity and was dominated by two major modes, and the difference in evaporation between Junan County and the other regions of Linyi City was large. Therefore, the local regional climate changes in Yinan and Junan should be given attention. All three meteorological elements showed interannual and interdecadal variations in the short (5 a), medium (16 a), and long (25 a) terms, with precipitation, temperature, and evaporation dominated by 16 a, 24 a, and 31 a, respectively. In the short-term future, the regional precipitation and temperature in Linyi will experience decrements that are above the multiyear average, and evaporation will increase to above the multiyear average. Given the changing trends of precipitation, temperature, and evaporation, urgent requirements for the regional development of efficient water-saving irrigation and the promotion of digital agriculture should be proposed.</p> </abstract>

Correction: Spatiotemporal variation of the major meteorological elements in an agricultural region: A case study of Linyi City, Northern China

Correction: Spatiotemporal variation of the major meteorological elements in an agricultural region: A case study of Linyi City, Northern China

아버지의 양육 행동이 유아의 사회적 능력에 미치는 영향 -유아의 자기조절 능력의 매개효과-

The purpose of this study is to explore how fathers' parenting behaviors influence young children's social competence, and to examine the mediating role of young children's self-regulation skills in this relationship. To achieve this, data were collected from 218 young children and 218 fathers at a public kindergarten in Linyi City, Shandong Province, as well as 11 kindergarten teachers. The study employed frequency analysis, descriptive statistics, Pearson correlation analysis, and the three-step approach of Baron & Kenny (1986), with the Sobel test used to verify the mediating effect. The results of the study revealed that, first, there were significant positive correlations between fathers' parenting behaviors, young children's self-regulation skills, and young children's social competence. Second, the mediating role of young children's self-regulation skills in the relationship between fathers' parenting behaviors and young children's social competence was confirmed. These findings have significant implications for real-life scenarios. Parents and educators can understand how fathers' parenting behaviors may influence children's social competence and self-regulation skills, and adjust their parenting methods accordingly. Additionally, this research can emphasize the role of fathers and help to give more consideration to parental roles within the family.

Analysis of Differences in Physical Activity Volume among the Elderly in Lanshan District, Linyi City

Analysis of Differences in Physical Activity Volume among the Elderly in Lanshan District, Linyi City

Quantifying the contribution of industrial zones to urban heat islands: Relevance and direct impact

Industrial production activities are an important source of urban heat emissions. Quantifying the contribution of industrial zones to urban heat islands (UHIs) is crucial for urban planning and management. However, few studies have explored the quantitative relationship between land surface temperature (LST) and urban industrial zones (UIZs) at the urban scale, especially the direct impact of industrial expansion or contraction on LST. Linyi City, the largest city in Shandong Province, was selected as the study area. This study aims to analyze the spatial-temporal variation in the UIZs in Linyi City from 2013 to 2022, focusing on the quantitative relationship between LST and UIZs. Using remote sensing images, a novel spectral index (called the BCCSI) was constructed to identify factory buildings. The performance of the BCCSI was validated using five existing indices and Google Earth images. Over the past 10 years, the UIZ area of Linyi has increased by 137.16 km2. The UIZs in Linyi are mainly distributed in counties near the urban center, and counties with large UIZ areas are also hotspots for UIZ changes. Moreover, we found that the contraction or expansion of UIZs has obvious effects on LST. After the contraction (or expansion) of UIZs, the LST decreased (or increased) by 0.48 °C (0.39 °C). In addition, we found that there is an exponential relationship between LST and the industrial unit area (P value less than 0.01). This research is valuable for environmental assessment and fine management of industrial cities.

Exploring the "Time Bank" Mutual Support Model for the Elderly in Linyi City

At present, China is facing increasingly severe pension problems, the weakening of the family pension function, the pension security system is not perfect, the number of elderly and incapacitated elderly people is rising year by year, to explore the diversified pension model is the new era of China's characteristics of the positive response to the aging of the population road requirements. Based on this, this paper focuses on the willingness of the rural elderly to participate in the "time bank" mutual care model, and analyses their willingness to participate and the factors affecting them through the research on the rural elderly in Linyi City, in order to provide policy suggestions for the improvement of China's pension service system. This paper uses a combination of qualitative and quantitative research methods, combined with the current situation of the elderly in Linyi City, and analyses the reliability, validity and descriptive statistics of the collected primary data, focusing on analysing the willingness of rural elderly to participate in the "time bank" mutual support for the elderly and the influencing factors, and finally this paper proposes a deepening of the "time bank" model of elderly care, based on the problems found in the study. Finally, based on the problems found in the study, this paper proposes to deepen the awareness of "Time Bank", strengthen the standardised training for the elderly who participate in "Time Bank", as well as to realise the combination of public welfare and incentive service willingness to enhance the idea of gradually improving the enthusiasm of the participation of the elderly in rural areas, and to promote the "Time Bank". the sustainability of the "time bank" model of mutual support for the elderly.

Using Self-Organizing Map and Multivariate Statistical Methods for Groundwater Quality Assessment in the Urban Area of Linyi City, China

Groundwater holds an important role in the water supply in Linyi city, China. Investigating the hydrochemical characteristics of groundwater, and revealing the factors governing groundwater geochemistry, is a primary step for ensuring the safe and rational exploitation of groundwater resources. This study used a self-organizing map (SOM) and multivariate statistical methods to assess groundwater quality in the urban area of Linyi city. Based on the hydrochemical dataset consisting of nine parameters (i.e., pH, Ca2+, Mg2+, Na+, K+, HCO3−, Cl−, SO42−, and NO3−) from 89 groundwater samples, the SOM was first applied to obtain the weight vectors of the output nodes. Hierarchical cluster analysis (HCA) was used for organizing the nodes into four clusters. The node cluster indices were then remapped to the groundwater samples according to the winner node for each sample. The hydrochemical characteristics and factors controlling the groundwater geochemistry of the four clusters were analyzed using principal component analysis (PCA) and graphical methods including Piper and Gibbs diagrams, as well as binary plots of the major ions in groundwater. Results indicated that groundwater geochemistry in this area is primarily governed by water–rock interactions, such as the dissolution of halite, calcite, and gypsum, along with the influence of municipal sewage and the degradation of organic matter. This study demonstrates that the integration of an SOM and multivariate statistical methods improves the understanding of groundwater geochemistry and hydrochemical evolution in complex groundwater flow systems impacted by utilization.

A new species of hypodematium (hypodematiaceae) From CHINA

Hypodematium chingii J. X. Li & X. J. Li, sp. nov., a new species of Hypodematium Kunze belonging to Hypodematiaceae from Yinan County, Linyi City, China is described and illustrated. It is closer to H. sinense K. Iwats and H. fordii (Baker) Ching but differs by its stipe sparsely rod-shaped glandular hairs, triangular laminae, sparsely covered indusia with short acicular and glandular hairs, tuberculate perispore with protrusions, and surface with scaly ornamentation. Results of comprehensive studies on morphological, anatomy and Scanning Electron Microscopy (SEM) of these three species are presented, and SEM structures of laminae and spores are provided. A key to the closely related species is also presented. Bangladesh J. Bot. 52(2): 631-638, 2023 (June) Special

A new species of hypodematium (hypodematiaceae) From CHINA

Hypodematium chingii J. X. Li & X. J. Li, sp. nov., a new species of Hypodematium Kunze belonging to Hypodematiaceae from Yinan County, Linyi City, China is described and illustrated. It is closer to H. sinense K. Iwats and H. fordii (Baker) Ching but differs by its stipe sparsely rod-shaped glandular hairs, triangular laminae, sparsely covered indusia with short acicular and glandular hairs, tuberculate perispore with protrusions, and surface with scaly ornamentation. Results of comprehensive studies on morphological, anatomy and Scanning Electron Microscopy (SEM) of these three species are presented, and SEM structures of laminae and spores are provided. A key to the closely related species is also presented. Bangladesh J. Bot. 52(2): 631-638, 2023 (June) Special

Scaling Mechanism and Permeability Evolution of Sandstone Reservoir

Knowledge of scaling mechanisms and the permeable behavior of rocks is highly important for geothermal energy development. In this study, the sandstone was soaked in a solution with the same chemical composition as geothermal water in Linyi City, Shandong Province. Permeability tests, scanning electron microscope tests, and nuclear magnetic resonance tests were performed on sandstone samples after different soak times (0, 30, 60, and 90 days) and temperatures (25 and 85 °C) to characterize the changes in microstructure and permeability properties. In addition, the changes in ion concentration in chemical solutions were compared. The results show that the wet mass and porosity of sandstone increase with the increase of soak time (0-70 d), and then entered the stable periods (70-90 d). As the soaking time, the medium and large pores inside the sandstone are transformed into small pores. The permeability of sandstone shows an overall decreasing trend, with the maximum decline when the soaking time is 30 d. At 25 °C, the scaling behavior is mainly involved by Ca2+, but at 85 °C Mg2+ is also involved in the scaling behavior. The scaling mechanism becomes the joint participation of Ca2+ and Mg2+. The results of the PHREEQC simulations are almost the same as the laboratory test results, indicating that sodium feldspar, potassium feldspar, and chlorite are generated slowly during the fouling process.

Research on the Industrial Transfer from the Yangtze River Delta to Linyi City based on the Industrial Gradient Coefficient

The Yangtze River Delta region, represented by Shanghai, Zhejiang and Jiangsu, has grown as one of the most developed regions in China based on the acceptance of international industrial transfer. However, along with the rising factor costs, increasing environmental pressure and resource constraints, it has become a general trend to upgrade industrial structure, give priority to intensive, high technology and high value-added industries, some labor-intensive and capital-intensive industries is moved to other regions in the country. As the southern gate of Shandong Province, Linyi City is close to the Yangtze River Delta, with a common history, and complementary resources, and is an important hub connecting the north and south economies. It should take full advantage of its location, natural resources and labor resources to actively undertake the industrial transfer of the Yangtze River Delta and participate in the regional economic cooperation and development of the Yangtze River Delta. The difference in the development level between the transferring and taking over places is a prerequisite for industrial transfer, which can be measured by the industrial gradient coefficient, which shows the different levels of industrial gradients to determine the transferring industries in the Yangtze River Delta region; in addition, the relative industrial gradient coefficient is introduced to determine the industries Linyi can take over.

Cancer survival analysis and spatial distribution during 2014–2016 in Shandong Province, China

We aimed to analyse cancer survival and its spatial distribution in Shandong Province. A total of 609,861 cancer cases from 2014 to 2016 were included in the analysis. Survival analysis was performed using strs in Stata. Spatial analysis was performed with GeoDa to determine measures of global and local spatial autocorrelation. Hotspot analysis was used to identify spatial clusters of high values (hotspots) and low values (cold spots) through ArcGIS. The 5-year relative survival rates were 37.85% for all cancers combined, 29.29% for males and 48.88% for females. After age standardisation, the survival rates were 34.47% for all cancers, 28.43% for males and 41.56% for females. Cancers with higher survival rates included thyroid (78.80%), breast (69.52%), uterus (64.51%) and bladder (62.54%) cancers. However, cancers with lower survival rates included pancreatic (11.34%), liver (13.19%), lung (18.39%), bone (19.71%), gallbladder (19.78%), oesophagus (24.52%), and stomach (28.85%) cancers and leukaemia (26.30%). Cancer survival rates in urban areas (37.53%) were higher than those in rural areas (32.83%). From the geographic distribution of cancer survival, we observed that the survival rate displayed a downward trend from east to west and from north to south. The hotspot analysis revealed that some counties of Qingdao, Jinan, Zibo, Dongying and Yantai cities were hotspots, whereas almost all counties of Linyi city and some counties of Weifang, Heze, Rizhao, and Dezhou cities were cold spots. In conclusion, the cancer survival rate in Shandong is still lower than that in China overall. The early diagnosis and treatment of lung and digestive tract cancers need to be further strengthened. Nevertheless, our results reflect a critical first step in obtaining and reporting accurate and reliable estimates of survival in Shandong.

The Equitable Development of Primary and Secondary Education in Linyi City

The Equitable Development of Primary and Secondary Education in Linyi City