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Objective To analyze the trends in incidence of acutemyocardialinfarction (AMI)in Wuhan from 2016 to 2023, and to provide scientific basis for prevention and control of AMI in Wuhan. Methods The incidence data during 2016-2023 from the Surveillance System of cardiovascular diseases in Wuhan were collected to compute the incidence, age-standardized rate by China population 2010 (ASR-C) and by Segi's world standard population (ASR-W). The annual percent change (APC) and average annual percent change (AAPC) of incidence of AMI were evaluated using Joinpoint regression model, to analyze the incidence trends of AMI. Results The incidence of AMI in Wuhan increased from 56.67/105 in 2016 to 115.29/105 in 2023 (APC = 10.24%, P < 0.05); and ASR-C of AMI increased from 40.45/105 in 2016 to 79.57/105 in 2023 (APC = 9.75%, P < 0.05).The AMI incidence of males(83.65/105) was significantly higher than that of females(34.99/105) from 2016 to 2023 (P < 0.05).The AMI incidence of urban area(62.59/105) was significantly higher than that of rural area(55.35/105)(P < 0.05).The regression model showed that the incidence and ASR-C of AMI in male and female all showed a significant upward trend (all P < 0.05);the incidence and ASR-C of AMI of urban residents all showed a significant upward trend (all P < 0.05), while the trends of rural residents from 2016 to 2020 were not statistically significant, but they all showed a significant upward trend from 2020 to 2023 (all P < 0.05).The incidence of AMI in age groups < 30,30- < 40,40- < 50, 50- < 60, 60- < 70 years and ≥70 years in Wuhan increased at different rates from 2016 to 2023(P < 0.05).Incidence in age groups 30- < 40,40- < 50 years increased rapidly, with the AAPCs of 16.73% and 13.87%, respectively. Conclusion The incidence of AMI in Wuhan showed an upward trend from 2016 to 2023, young adult males are the crucial population for prevention and control. [ABSTRACT FROM AUTHOR]

Transit-oriented development (TOD) is a crucial way to achieve compact, livable, and sustainable urban development. The integration of shared bikes and rail transit significantly expands the service scope of public transportation and promotes the implementation of TOD planning strategies. Based on TOD planning concepts, this paper identifies the transfer flow patterns of shared bikes. Considering the semantic functions of metro stations, an interpretable machine learning model is used to explore the tidal flow patterns of shared bikes and their nonlinear correlations with the built environment in the main urban area of Wuhan. The conclusions are as follows. (1) Based on the tidal balance index of shared bikes during morning and evening peak periods, two types of tidal flow patterns are identified in the main urban area of Wuhan, namely "convergence in the morning and divergence in the evening" and "divergence in the morning and convergence in the evening". The "convergence in the morning and divergence in the evening" tidal pattern mainly occurs in residential areas at a moderate distance from the urban center and employment areas on the edge of the Hankou central activity zone, while the "divergence in the morning and convergence in the evening" tidal pattern mainly occurs in employment-dense areas near the Second Ring Road. (2) Four types of semantic functional themes and two mixed functional clusters of metro stations are identified through POI semantic information modeling and hierarchical clustering. The semantic functional types of metro stations are strongly correlated with the flow patterns of shared bikes. (3) The nonlinear effects of built environment factors are significant. The moderate supporting living facilities and road density, and the large residential scale can effectively promote the occurrence of stable connection pattern of shared bikes with high riding flow. This study can provide a basis for alleviating the tidal flow problem of shared bikes from the aspects of optimizing shared bikes scheduling and adjusting the urban built environment. [ABSTRACT FROM AUTHOR]

Objective This study aims to investigate the feasibility and safety of Da Vinci robotic-assisted thoracoscopy for resecting mediastinal tumors in pediatric patients. Methods From November 2020 to June 2023, a total of 80 pediatric patients undergoing mediastinal tumor resection at Wuhan Children's Hospital were randomly assigned into two groups, with each group consisting of 40 participants. The control group underwent conventional thoracoscopy, while the observation group underwent Da Vinci robotic-assisted thoracoscopy. This study aimed to compare perioperative indicators between the two groups and establish learning curves based on surgical duration and intraoperative blood loss. Additionally, it assessed levels of pain mediators and stress response markers before surgery and at 24 hours post-surgery, as well as postoperative complications. Inflammatory marker levels were evaluated one month after surgery, and the children's quality of life was measured using the Pediatric Quality of Life Inventory(PedsQL) Generic Core Scales before surgery and one month post-surgery. Results The surgical duration for the observation group and the control group was(1.76 ± 0.33) hours and(2.82±0.62) hours, respectively, and the intraoperative blood loss was(49.83 ± 6.39) mL and(71.55 ± 8.19) mL, respectively. Furthermore, the post-operative drainage time, drainage volume, and hospital stay for the observation group were all lower than those for the control group(P < 0.05). After surgery, the levels of BK, 5-HT, NPY, and PGE2 in the observation group were(8.06 ± 1.06) mg/L, (170.20 ± 13.21) ng/L, (201.82 ± 13.52) mg/L, and(241.82 ± 15.32) ng/L, respectively, indicating lower levels of pain mediators, stress response markers, and inflammatory factors compared to the control group(P < 0.05). he overall incidence of complications was 2.50% in the observation group as opposed to 20.00% in the control group. Moreover, there was a statistically significant improvement in quality of life after surgery within the observation group when compared to that within the control group(P < 0.05). Conclusion Da Vinci robotic-assisted thoracoscopy demonstrates enhanced feasibility and safety in pediatric mediastinal tumor resection, thereby justifying its clinical promotion. [ABSTRACT FROM AUTHOR]

Analyzing the carbon metabolism mechanism of production-living-ecological space through simulating biological metabolism can help to achieve the integration of regional elements and structural optimization, which is one of the effective ways to seek for the green and low- carbon development of cities. Taking Wuhan city, Hubei province as an example, a horizontal carbon flow model was constructed to analyze the flow direction of carbon elements from 2005 to 2020; and ecological network analysis (ENA) model was used to analyze the carbon metabolism of production-living-ecological space, and assess the ecological relationship between different land uses; finally, the comprehensive effect of the evolution of production-living-ecological space on urban carbon metabolism was judged by using the mutualism index. The results show that ① from 2005 to 2020, Wuhan city is dominated by negative carbon flows, which peaks in 2010- 2015, and the study area shows a disorganized carbon metabolism from 2005 to 2015; from 2015 to 2020, the effect of carbon emission reduction is significant, the positive and negative carbon flows are weaker, and distribute sporadically in space, and carbon metabolism is gradually balanced at the later stage; ② ecological relationships in Wuhan city are dominated by predation- restriction, ecological space is crowded by living space and production space, ecological conflicts between different land uses are more intense, and ecological relationships improve significantly after 2015 when the area without ecological relationships increase; ③ the mutualism index shows a trend of decreasing and then increasing, but the average value of mutualism index is 0.77(<1), which indicates that the evolution of the production-living-ecological space still has a negative effect on the balance of urban carbon metabolism, and there are still irrationalities in spatial utilization of Wuhan's land and the pressure on carbon metabolism, which calls for the optimization of land and spatial layout, and the promotion of green and low-carbon development. [ABSTRACT FROM AUTHOR]

The study of the factors affecting the heat island effect was significantly influenced by the effect of the modifiable areal unit problem (MAUP), which led to uncertainty in the results. Taking the main urban area of Wuhan City as an example, we constructed a multidimensional urban spatial morphology index system based on multi-source spatial data of urban land use and buildings, explored the response characteristics of geographic detectors to the modifiable areal unit problem (MAUP) effect, analyzed the driving forces and factors of the spatial differentiation of urban thermal environment, proposed optimal regulation strategies to mitigate urban surface thermal environment. The results show that MAUP has strong sensitivity to the detection results of urban heat island effect factors, and different research units and partitioning methods will affect the research results. Factor detection analysis shows that the explanatory power of 3D spatial morphological indicators on urban heat island effect is greater than that of 2D urban land use indicators, and building density is the dominant driver of spatial differentiation of surface thermal environment. The interaction detection analysis shows that the spatial differentiation of the surface thermal environment in the main urban area of Wuhan is a synergistic process between different influencing factors, and the interaction between two-dimensional indicators and between two-dimensional and three-dimensional indicators is significantly greater than the single-factor effect. The study of the spatial differentiation of urban spatial morphology on the surface thermal environment provides theoretical support for the coordinated optimization of multi-dimensional urban spatial morphology to mitigate the heat island effect. [ABSTRACT FROM AUTHOR]

Lin Bai was born in Guangxi, working in Beijing for several years, and having multiple relations with Wuhan. Lin Bai, a writer with no obvious geographical identity, recalls her friendship with colleagues such as Deng Yiguang, Li Xiuwen and Zhang Zhihao during working in Wuhan, and also identifies "Literary hometowns". "There is a growing distance between society and nature," she said, "Bei Liu wants to blend them in. The literary meaning of plants is definitely nature." She keenly pointed out: "The avant-garde turned to traditional literature, after having been aware of the original writing has problems". Her opinion called for deep thought. [ABSTRACT FROM AUTHOR]

The novel Farewell to Congtai by Wei Min, a Chinese writer in Australia, is a novel that focuses on the art of Han opera and showcases the urban culture of Wuhan. The novel starts with the daily lives of the characters in the story, focusing on describing Han opera and telling the development history of Han opera culture. The author has made a beneficial attempt to construct a cultural epic of "Opera Dock" by presenting a profound sense of history and creating a diverse cultural space. The narrative style of "opera-novel" emphasizes the independence of the performance space of opera. In addition, the intertextuality between Han dramas and novels makes people feel that life is like drama. Wei Min stands at a new historical starting point, exploring the culture of Han Opera with a strong cultural consciousness. The presentation of the "novelty seeking" consciousness in the process of seeking transformation in Han Opera is in stark contrast to the "nostalgia" consciousness in traditional Chinese opera culture writing, bringing new aesthetic qualities to this writing tradition and forming the uniqueness of the novel. [ABSTRACT FROM AUTHOR]

Wuhan-born Australian travel writer Wei Min has completed a transition in her writing since Jacaranda. After experiencing the trauma of the death of her relatives and the scrubbing of the years, her works are mostly based on "self" as an entry point, with strong personal colors, showing the characteristics of autobiographical and reminiscent writing. At the same time, she adopts the "chronicle" narrative method to write real historical details; and the author's voice, which transcends the time of the novel, reasonably intervenes to enhance the authenticity of the novel text. [ABSTRACT FROM AUTHOR]

In the interview, Australian-based writer Wei Min began by discussing the origins of her creation and elaborated on the challenging process of writing Farewell to Congtai. Despite her multiple identities, she insists on writing purely for the sake of writing. Wei Min regards Han Opera as the most distinctive cultural hallmark of Wuhan, and on this basis, she completed the construction of the cultural epic of "Opera Hub". Her portrayal of Wuhan's urban culture is rooted in personal experience, and her profound material foundation and spiritual preparation lend a unique "Han flavor" to her novels. She described her fateful encounter with Han Opera as a confluence of "favorable timing, advantageous geographical conditions, and harmonious human relations, " and hopes to arouse more readers' interest and attention through her portrayal of Han Opera performances. The expression "women are like flowers, " derived from the theatrical theory of "graceful posture and blooming flowers, " allows us to sense the abundant and vibrant female strength. [ABSTRACT FROM AUTHOR]

Field experiments were conducted to investigate the effects of different application rates of potassium chloride (KCl) on biomass, seed yield, and nutrient accumulation and distribution in oilseed rape at both the seedling and maturity stages. The study was carried out in Jiangxia District, Wuhan City, Hubei Province, located in the middle reaches of the Yangtze River from 2021 to 2022. This research aims to provide a theoretical foundation for the optimal application of potassium (K) fertilizer in oilseed rape cultivation. Six treatments were applied, including K0 (K2O 0 kg/hm²), K30 (K2O 30 kg/hm²), K60 (K2O 60 kg/hm²), K90 (K2O 90 kg/hm²), K120 (K2O 120 kg/ hm²) and K150 (K2O 150 kg/hm²). The results indicated that the biomass of all oilseed rape organs at both seedling and maturity stages, as well as seed yield, significantly increased within a certain range of increasing levels of K fertilizer. The maximum increase in seed yield was observed to be up to 1199.6 kg/hm² with an increase ratio of up to 57.20%. When the application rate of K exceeded 120 kg/hm², there was no significant increase in shoot biomass and seed yield. With increasing K fertilizer application, there was a significant increase in K content across all organs. However, N content did not show significant changes at both the seedling and maturity stages. Notably, P content in seeds at the maturity stage exhibited a significant increase. The partial factor productivity of K fertilizer significantly decreased with increasing K fertilizer application. However, the agronomic efficiency, physiological efficiency, apparent recovery efficiency and harvest index of K fertilizer all reached their maximum at an application rate of 90 kg/hm². Subsequently, these efficiencies gradually decreased with further increases in K fertilizer. Economic analysis revealed that the output-input ratio and net income were optimized at a K application rate of 120 kg/ hm². Further increases in K fertilizer would lead to reduced economic efficiency. In addition, the optimal application rate of K fertilizer for maximizing economic efficiency in this region is determined to be 114.6 kg/hm² based on a combination of linear and platform fitting results. Consequently, rational utilization of K fertilizer can significantly enhance shoot biomass and promote the accumulation of essential nutrients (N, P, and K), thereby resulting in increased plant height, primary branch count, pod number, and ultimately achieving higher yields while ensuring maximum economic efficiency. [ABSTRACT FROM AUTHOR]

The integrated development of urban and rural regional functions is a key pathway to alleviate conflicts in territorial space. It is essential to explore the theoretical mechanisms behind the integration of urban and rural regional functions. This study employed entropy weight TOPSIS, kernel density estimation, and an integrated development degree model to analyze the spatio-temporal patterns of urban and rural regional functions in 130 cities along China's Yangtze River Economic Belt. A bivariate spatial autocorrelation model was used to identify response processes. The results showed that: (J) In the Yangtze River Economic Belt, urban and rural regional functions were on the rise, with urban functions forming a ' point-cluster-plane' distribution and rural functions exhibiting a clustered distribution with prominent geographical gradient differentiation from upstream to downstream regions. © The integration of urban and rural functions in these cities evolved from transitional integration to enhancement-oriented integration, with the level of integrated development being higher in downstream regions than midstream and upstream regions. The pattern evolved from centering around major cities to focusing on core urban agglomerations, exacerbating polarization between the east and west and widening intra-provincial disparities. © The mutual development between urban and rural functions was significantly strengthened, undergoing stages of demand integration, guided integration, and spontaneous integration and showing a spiral upward trend from transitional to enhanced and then to optimized integration. Based on these findings, the study suggests that: ( Upstream regions should seize policy-driven development opportunities to attract capital, technology, and labor-intensive industries from downstream regions, concentrating resources to comprehensively promote rural revitalization and dual enhancement of urban and rural functions. © Midstream regions should focus on promoting urban and rural integrated development, strengthening the radiating effects of regional central cities like Wuhan, Changsha, and Nan-chang to drive rural function development. © Downstream regions need to facilitate the gradual shift of production and living activities from urban to rural areas, promote rural land circulation, and scale agricultural production and operations in order to promote high-quality integration of urban and rural regional functions. [ABSTRACT FROM AUTHOR]

The evolution of urban innovation space development varies greatly, and it is of great practical significance to pay attention to its causes and the key influencing factors of its evolution. Taking Wuhan main city as an example, the machine learning algorithm, and Random Forest Modeling Algorithm is used to analyze the influencing factors on the evolution of Wuhan's innovation space. The results show that the Random Forest Modeling algorithm fits the dataset well, can effectively capture the complex nonlinear characteristics of the influencing factors and the evolution of innovation space, and reveals that the important factors affecting the evolution of the innovation space are population density, distance from commercial centers, subway station density and road network density. Finally, we make suggestions for the future development of urban innovation space based on this evidence. [ABSTRACT FROM AUTHOR]

In China, approximately 346.3 x 104 km² of the karst rocks are distributed, accounting for about one-third of the country's land area. Karst groundwater channels are common geological phenomena in concealed karst areas. Various karst caves and underground channels widely developed cause the complex groundwater system dominated by pipe flow, which promotes the transport of groundwater, soil, and rocks, resulting in complex geological issues for urban underground space development and utilization in karst areas. In these areas, ground collapse disasters occur from time to time. In geothermal areas, karst groundwater channels are often accompanied by frequent heat exchange, directly affecting the quality of geothermal development. Therefore, conducting exploration of karst underground channels is of great significance for the development of urban underground space and the prevention of geological disasters in karst areas. Due to the high degree of spatial variability of karst channels, it is a challenge for conventional two-dimensional detection methods to complete the geophysical imaging, which in turn results in the difficulty of conventional karst detection. Geophysical exploration is widely used due to its wide applicability, large detection depth, and accuracy. However, different geophysical methods have different advantages in terms of detection depth, resolution and practicality. The Ground Penetrating Radar has the characteristics of high efficiency and high resolution, but it is mainly applied to the exposed and shallow-covered karst due to factors such as limited penetration depth, irregular terrain, and clay content. Electromagnetic and seismic exploration can generate better results in the exploration of buried karst. In addition, microgravity exploration can be used to detect shallow karst caves and fill-type karst caves. Electrical resistivity tomography (ERT) is the most commonly used geophysical method for karst exploration, and has been applied to various karst geological environments, such as cave exploration, the exploration of water-filled karst groundwater channel, the detection of urban underground cavity, and engineering surveys. In this study, 3D ERT was used for fine detection of concealed karst underground channels in the urban area. Combining with geophysical numerical simulation and application examples, the effectiveness of 3D on karst underground channels with different filling types was analyzed. The research results show that 3D ERT has a significant improvement in data volume and resolution compared to 2D ERT. 3D ERT can more intuitively characterize the three-dimensional electrical structure characteristics of the target body and has advantages in imaging karst groundwater channels. Through the three-dimensional electrical imaging of the karst groundwater channel in Yuanquan village, Wuhan City, the groundwater migration characteristics of the low-temperature hot spring are revealed. The analyses of geophysical prospecting and drilling show that two low-temperature hydrothermal vent groups in this area are directly connected by karst underground channels and connected with north-west fault structures, reflecting a hydrodynamic process. In this process, deep hot water firstly circulates along the fault fracture zone to shallow karst channels, and after its horizontal migration at a certain distance, deep hot water exposes at the surface in the form of spring near the fracture zone, and the contact zone of carbonate rock and schist. In this study, the three-dimensional electrical structure imaging of karst groundwater channel near the hot spring point has been jointly realized by geophysical exploration and drilling, and the trends of fractured fault zone and karst channel have been displayed. Study results show that the low-temperature hydrothermal spring is connected to the karst groundwater system through deep faults. In view of this, it is proposed to carry out systematic geothermal explorationin the area to find out the hydrogeological conditions of hydrothermal spring, the groundwater circulation and heat interaction processes. In addition, the study results may provide support for the temperature increase of the hydrothermal spring and for the development of urban geothermal energy. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper intends to reveal the phosphorus release potential energy of different phosphorus spices at varied depths of sediments in eutrophic lakes and the relevant environment risk. Lake Qingling in Wuhan City is taken as the object of case study which includes the vertical distribution characteristics of organic matter, microbial extracellular enzymes, phosphorus forms, phosphorus adsorption behavior and phosphorus adsorption index of sediments. As a result, the case study shows that iron bound phosphorus (Fe(OOH)~P) and calcium-bound phosphorus (CaCO3~P) are the main phosphorus forms in the sediments of Lake Qingling, and both Fe(OOH)~P, CaCO3~P and the hot alkali extractable organo-phosphus of the sediments possess phosphorus release potentials; besides, microorganisms and their extracellular enzymes play an important role in phosphorus release. Furthermore, as for the intensity of phosphorus release risk of the sediments in different depths: surface sediments show stronger, while deep sediments (10~15 cm and deeper) that are of good buffer capacity show less risk; and at two sampling sites in south part of the Lake, the phosphorus release risk index (ERI) of surface sediment are 20.66% and 26.57%, respectively, and at three sampling sites in north part of the Lake are 35.61%, 111.22% and 325.96%, respectively. [ABSTRACT FROM AUTHOR]

Low temperature is a significant abiotic stress factor that restrict the growth of peanuts, and breeding of cold-tolerant varieties is the most direct and effective approach to solve low temperature and cold damage. In this study, 372 peanut germplasm resources collected from home and abroad were used as research objects,and the yield correlation traits and qualities in Wuhan of the warm region and Kunming of the cold region were analyzed. The membership function method was used combined with chain cluster analysis to screen excellent cold tolerance resources, and the influence of cold and cool climate on yield correlation factors and quality was analyzed. Key cold resistance identification indicators were screened to identify and evaluate their cold resistance. The results showed that the plant, yield and quality of peanut were mainly affected by the temperature, light and accumulated temperature at the pod stage and the full fruit ripening stage: the higher temperature and accumulated temperature, longer light time result in the higher yield, oil content, protein and other content and also resulted in lower content of oleic acid, linoleic acid and sucrose. Tolerance of different materials to low temperature was different. The comprehensive cold resistance evaluation value (D) was clustered and analyzed, and 372 varieties were divided into 4 categories. Among them, Class I belonged to the strong cold resistant type with a total of two parts; Class II belongs to the cold-resistant type with a total of 86 varieties; Class III belongs to the non-cold-resistant type with a total of 280 varieties; Class IV is a sensitive type of varieties with a total of 4 varieties. Using multiple stepwise regression analysis method, the evaluation model of peanut field cold tolerance Y=-0.002+0.003X1+0.008X2+0.002X3+0.001X4 was established, and the relative hundred kernel weight, relative number of fruits per plant, relative plant height and relative yield per plant were screened out as the initial screening indicators of peanut field cold tolerance, which provided basic varieties and efficient identification methods for the cultivation of new varieties of peanut cold tolerance and related theoretical research. [ABSTRACT FROM AUTHOR]

In order to investigate the pollution status and sedimentary records of polycyclic aromatic hydrocarbons (PAHs) in the sediments of Houguan Lake in Wuhan, this study collected 7 surface sediment samples and 1 sedimentary column sample in September 2020. The sedimentary column chronological sequence of the Lake was constructed using a combined 210Pb and 137Cs dating method. The content of 16 optimized PAHs was analyzed using gas chromatography-mass spectrometry (GC-MS), and the source of PAHs was analyzed using characteristic ratio method. The results showed that the average concentration of PAHs in the surface sediment was (247.90±32.01) ng/g, belonging to a moderate pollution level, with 3 and 4 ring PAHs being the main pollutants, and there was no significant difference in spatial distribution. The sedimentation rate of the sedimentary column is 0.73 cm/a, and the collected sedimentary column can reflect the sedimentation process in the past 160 years. The average content of 16 PAHs in the sedimentary column is 56.84 ng/g, indicating a low pollution level. According to the composition characteristics of PAHs, the sedimentation process is divided into four stages. The composition characteristics of PAHs in different stages differ significantly, reflecting the transformation of energy structure in different historical periods. Before the 21st century, there was a significant positive correlation between the content of PAHs and socio-economic indicators such as GDP and permanent population. In recent years, the content of PAHs have been mainly affected by meteorological conditions such as evaporation and temperature, indicating that with China' s emphasis on ecological civilization construction, Wuhan has achieved certain results in ecological environment protection. [ABSTRACT FROM AUTHOR]

With the development of society and economy, urbanization level continues to increase, which has changed the characteristics of the underlying surface. The water cycle has been seriously affected, leading to a series of urban water problems such as waterlogging and water environment pollution. Low Impact Development (LID) can alleviate the amplification effect of rainfall and flood caused by urbanization, and a key issue in the design of LID measures is to explore the impact of underlying surface changes on flood processes. This paper compares urban rainwater flood models and selects the Win-TR55 model, which is a small watershed design flood model. The core of this model is the SCS-CN runoff curve model, which is characterized by simple calculation process, less required parameters, and comprehensive consideration of the relationship between changes in basin precipitation, underlying surface type, and runoff. Based on the above model, the underlying surface of the Jiulong Ecological Park in Wuhan is analyzed under current, traditional, and low impact development conditions. The design flood process is simulated under different return periods, and the hydrological effects of low impact development are evaluated based on changes in the flood volume, peak, and inundation range. The results show that 1 under the three development modes, the CN value is the highest under traditional development and the CN value is the lowest under low impact development conditions. This indicates that in the low impact development mode, the type of underlying surface has been changed, the storage capacity has been increased, and the corresponding CN value has decreased, resulting in a decrease in flow rate. 2 Under the low impact development conditions, the reduction rates of flood volume for once every year, once every five years, once every ten years, and once every fifty years can reach 96.74%, 81.58%, 73.46%, and 61.13%, and the reduction rates for flood peaks can reach 94.14%, 70.63%, 60.64%, and 45.42%. 3 The reduction rates for the design inundation range can reach 74.35%, 63.60%, 51.14%, and 6.83%. From the simulation results, it can be seen that as the rainfall intensity increases, the flood control effect of low impact development gradually weakens. The study also found that as the rainfall intensity increases, the control effect of low impact development on rainwater and flood gradually weakens. The research findings can provide a hydrological basis for the design of regional LID facilities. [ABSTRACT FROM AUTHOR]

Satellite navigation and positioning is one of the critical modules to ensure unmanned aerial vehicle (UAV) flight safety. When the satellite signal is weak or interfered, failure location will affect or even endanger the normal flight of UAVs. Vision-based methods can be used to locate UAVs with image matching. However, current image matching methods are unable to extract robust features due to the great difference between heterogenous images in time, which results in inadequate accuracy and efficiency. This paper proposes a fast feature matching method, which uses residual network to extract multiscale robust features and accelerates coarse matching of low-resolution feature maps using minimum Euclidean distance. The module above is used on high-resolution feature maps to achieve secondary fine matching. The homography matrix is used to correct matching pairs and achieve UAVs localization. The proposed method improves robustness and efficiency of localization for UAVs. The experimental results with Wuhan Suburb actural dataset show that the average accuracy of the proposed method is 2. 86 m, which is 2. 1% higher than the current typical matching algorithm. This method has obvious advantages on localization robustness and computing speed, which completes all images matching and localization on Jetson Xavier NX, while the localization frequency is optimal with the frequency of 1 Hz. [ABSTRACT FROM AUTHOR]

Land use conversion is not only an indispensable component of human socio-economic activities but also an important factor that brings about the change in carbon storage of land resources. It is of great practical significance to study the carbon storage of regional land use conversion in the process of achieving the goals of reaching peak carbon emissions and carbon neutrality in China. Based on land use conversion data over five periods from 2000 to 2020 in Hubei Province, this study applied the InVEST and PLUSmodels to study the spatial and temporal changes in carbon storage of land resources resulting from land use conversion in the region. The results showed that the carbon storage of land resources in Hubei Province had a noticeable downward trend in the study period, decreasing by approximately 10.6×107 t from 2000 to 2020. Among the different land use types, woodland carbon storage accounted for the largest proportion, reaching 70.68% of the total carbon storage of land resources. In spatial terms, the highest carbon storage valueof land resources in Hubei Province was primarily concentrated in the four mountainous areas, with Wuhan metropolitan area experiencing the most serious carbon storage loss. The results predicted by the PLUS model showed that by 2030, the carbon storage value of landresources would reach a maximum of 7.32×109 t in all regions of Hubei Province under the priority state of ecological conservation, surpassing the 7.02×109 t under the priority state of natural development and 6.76×109 t under the priority state of arable land conservation. The study concludes that the total carbon storage of land resources in Hubei province showed a significant decline from 2000 to2020, mainly due to rapid urbanization leading to the rapid expansion of construction land and the massive encroachment on cultivatedland, woodland, and grassland. The 2030 land use conversion trends in Hubei Province would vary considerably between the three different projected states of natural development, priority of cultivated land conservation, and priority of ecological conservation. The carbon storage value of land resources would increase the most under the priority state of ecological protection, with forest land being themost important source of carbon storage growth for land resources in all regions of Hubei Province. The carbon storage value of land resources would decrease the most under the priority state of arable land protection. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The spatial equity of urban public transportation services is an important indicator for evaluating the potential of high-quality and sustainable development of urban transportation. Based on a combined global and fine-grained grid perspective and taking the main urban area of Wuhan City as an example, this paper studied the spatial equity of public transportation resource allocation and its influencing mechanism. The spatial equity (SE) index and location entropy were used to evaluate the spatial equity of public transportation resource allocation. The Pearson correlation coefficient and the multiscale geographically weighted regression (MGWR) model were then used to reveal the degree of influence of built environment factors on spatial equity. The findings are as follows. ➀ Within the third ring road of the main urban area in Wuhan, there exist six high-density centers of public transportation supply and one supply agglomeration belt, and the supply intensity of transportation resources has significant spatial heterogeneity. ➁ The spatial equity of public transportation in Jianghan District is the highest, while that in Qingshan District is the lowest. Overall, the southern part of Wuhan is better than the northern part, and the SE in the urban-rural fringe is higher than that outside the urban-rural fringe, with 53% of analysis units below the average level of the study area. ➂ Public transportation adjacency, residential density, major road density, and road intersection density have significant impacts on the spatial equity of public transportation. The results of this study can help improve the efficiency of urban public resource allocation and provide decision-making support for achieving sustainable and high-quality development of urban transportation. [ABSTRACT FROM AUTHOR]

Monitoring the safety risks of the railway external environment is helpful to ensure the operation safety of the high-speed railway. Remote sensing can greatly reduce the human and material resources investment in monitoring work, and quickly find out the location and attributes of the safety hazards. A test section of Wuhan-Guangzhou high-speed railway was selected, GF-2 and SkySat satellite images were used to dynamically monitor the potential safety risks of railway external environment. The method of two-phase image main component transformation and artificial visual interpretation were adopted to obtain the change information of railway external environment in large-area remote sensing images. Using the method of GIS spatial analysis and combined with the maximum wind data of the month from 2011 to 2020 in the experimental area, the spatial and temporal changes of the safety risks around the high-speed railway area were compared and analyzed. The results indicate : 1 the safety hazards in the experimental area are mainly floating objects, accounting for more than 85% of the total number of hidden dangers; 2 the third phase of is mainly concentrated in the urban and rural combined areas, and the high-speed rail section is about 9 km long; 3 spring is the frequent wind weather, the maximum wind value can reach 12. 5 m/ s, and it is necessary to concentrated on the timely reinforcement or removal of the floating objects hazards. [ABSTRACT FROM AUTHOR]

【Objective】In order to study whether hybrids of the black soldier fly (Hermetia illucens L.) have growth advantages, the hybrid progeny of Wuhan strain and Bioforte strain and the difference of growth performance between Wuhan strain and Bioforte strain were studied. 【Method】Experimental strains F and F´ were obtained by cross and transverse cross between Wuhan strain and Bioforte strain, respectively. The growth performance, eclosion time and oviposition time of F and F´ were measured and compared with those of Wuhan strain and Bioforte strain. 【Result】The eclosion time of F strain and F´ strain was 30.3 d and 35.3 d, and the oviposition time was 36.6 d and 40.3 d, respectively. The eclosion and oviposition time of F strain were 5 d shorter than that of Wuhan strain, 9 d shorter than that of Bioforte strain, and the oviposition time of F´ strain was 1.4 d shorter than that of Wuhan strain. The eclosion time was 4 d shorter than that of Bioforte strain, and the oviposition time was 5.4 d shorter than that of Bioforte strain. In terms of feed utilization, the apparent digestibility of F strain, F´ strain, Wuhan strain and Bioforte strain were 59.53%, 59.25%, 58.05% and 58.10%, ingested feed conversion efficiency were 4.11%, 4.58%, 3.41% and 3.74%, and the feed-weight ratio were 8.58, 7.78, 10.5 and 9.05, respectively. Compared with Wuhan strain and Bioforte strain, the apparent digestibility of F strain was significantly higher, and the eclosion time and oviposition time were significantly lower. The digested feed conversion efficiency, apparent digestibility and ingested feed conversion efficiency of F´ strain were significantly higher than those of Wuhan strain and Bioforte strain, while the feed-weight ratio and protein content were significantly lower than those of Wuhan strain and Bioforte strain. There were no significant differences in the number of egg laid, quality of egg mass, or hatching rate among F strain, F´ strain and the Wuhan strain and Bioforte strain.【Conclusion】F strain and F´ strain were superior to Wuhan strain and Bioforte strain in feed utilization, but the protein content was slightly lower than Wuhan strain and Bioforte strain; The number of egg laid, egg mass and hatching rate of F strain, F´ strain were well maintained at the level of Wuhan strain and Bioforte strain; F strain had an advantage in growth cycle, and its eclosion time and oviposition time were shorter than Wuhan strain and Bioforte strain. [ABSTRACT FROM AUTHOR]

In order to delay the development of the insecticide resistance and screen the highly efficient mixtures against Spodoptera exigua (Hübner)，the interaction assay and co-toxicity coefficient method were used to evaluate the synergistic effects of different mixtures on S. exigua, and the field efficacy trial was conducted to verify the synergistic mixtures. The results of initial screening by interaction assay and rescreening by co-toxicity coefficient method showed that the proportion of chlorfenapyr and beta-cypermethrin at 7 : 3-12 : 1 (mass ratio of active ingredients at 1.20 : 1.00-6.23 : 1.00) had the synergistic effect on S. exigua, and the proportion of 9 : 1 (mass ratio of active ingredients at 4.63 : 1.00) had the highest co-toxicity coefficient of 314.72, and the synergistic effect was the greatest. The three mixtures with the proportion of 7 : 3, 9 : 1 and 11 : 1 (mass ratio of active ingredients at 1.20 : 1.00, 4.63 : 1.00 and 5.71 : 1.00) were selected for the field efficacy test. Compared with the single insecticides, the control efficacies of these three mixtures were improved at middle dosage (75.0 g a.i./hm² ) and high dosage (100.5 g a.i./hm² ) on each day after treatment against S. exigua, and the highest control efficacy reached 93.58% on the third day after treatment. According to the above results, the mass ratio of active ingredients of chlorfenapyr and beta-cypermethrin at 1.20 : 1.00-6.23 : 1.00 had the synergistic effect on S. exigua, which could be used for the control of S. exigua in Wuhan, and the recommended dosage was 75.0-100.5 g a.i./hm². [ABSTRACT FROM AUTHOR]

Objective To investigate the clinical manifestations and laboratory examination results of children with Kawasaki disease complicated by macrophage activation syndrome (KD-MAS), and to provide a basis for identifying early warning indicators for the early diagnosis and treatment of KD-MAS. Methods A retrospective study was performed on 27 children with KD-MAS (KD-MAS group) and 110 children with KD (KD group) who were admitted to Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, from January 2014 to January 2022. Clinical and laboratory data were compared between the two groups. The receiver operating characteristic (ROC) curve was used to investigate the value of laboratory markers with statistical significance in the diagnosis of KD-MAS. Results Compared with the KD group, the KD-MAS group had significantly higher incidence rates of hepatomegaly, splenomegaly, incomplete KD, no response to intravenous immunoglobulin, coronary artery damage, multiple organ damage, and KD recurrence, as well as a significantly longer length of hospital stay (P<0.05). Compared with the KD group, the KD-MAS group had significantly lower levels of white blood cell count, absolute neutrophil count, hemoglobin, platelet count (PLT), erythrocyte sedimentation rate, scrum albumin, scrum sodium, prealbumin, and fibrinogen (FIB), a significantly lower incidence rate of non-exudative conjunctiva, and significantly higher levels of C-reactive protein, alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase (LDH), and serum ferritin (SF) (P<0.05). The ROC curve analysis showed that SF, PLT, FIB, and LDH had high value in the diagnosis of KD-MAS, with areas under the curve (AUC) of 0.989, 0.966, 0.932, and 0.897, respectively (P<0.001), and optimal cut-off values of 349.95 pg/L, 159x109/L, 3.85 g/L, and 403.50 U/L, respectively. The combination of SF, PLT, FIB, and LDH had a larger AUC than PLT, FIB, and LDH alone in the diagnosis of KD-MAS (P<0.05), but there was no significant difference in the AUC between the combination of SF, PLT, FIB, and LDH and SF alone (P>0.05). Conclusions KD-MAS should be considered when children with KD have hepatosplenomegaly, no response to intravenous immunoglobulin, coronary artery damage, and KD recurrence during treatment. SF, PLT, FIB, and LDH are of high value in the diagnosis of KD-MAS, especially SF is of great significance in the diagnosis of KD-MAS. [ABSTRACT FROM AUTHOR]

In recent years, pollution of atmospheric particulate matter has been ameliorated continuously in Wuhan, but PM2.5 is still the main pollutant affecting the ambient air quality. This paper reviewed the research on the source apportionment of fine particulate matter in Wuhan during the period of 2012-2022 with respect to the status quo of the research of PM2.5 sources in Wuhan, and the spatial and temporal distribution characteristics of PM2.5 sources were sorted out and summarized. The source apportionment of PM2.5 revealed that the relative contribution of secondary source and biomass combustion source increased, while the relative contribution of dust source declined a lot in recent years, with the traffic source remained stabilized in general. Furthermore, in future the research direction of the source apportionment atmospheric particulate matter in Wuhan should focus on the mutual verification of multiple models and methods, the traceability of secondary aerosols, and the real-time rapid source analysis in the process of heavy smog pollution. [ABSTRACT FROM AUTHOR]

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This study is aimed at finding out the disaster mechanism of karst ground collapse in the Zhifang-Miaoshan paleo-clay area of Wuhan and selecting appropriate methods for the monitoring and early warning, so as to effectively reduce the harm caused by karst ground collapse. Through a special karst survey, we have identified the distribution and geological structure of soluble rocks, analyzed the formation and evolution process of karst ground collapse and selected monitoring methods for different collapse stages in the study area. The survey results show that the study area is mostly distributed by paleo-clay with single-layered structure. According to the upper and lower stacking relationship of overburden cohesive soil, soft soil and non-soluble rock (red layer), the geological structure distribution of soluble rock can be divided into three categories ➀, ➁ and ➂). In the structure of class ➀, the upper part is composed of cohesive soil; the lower part is soluble rock. The cohesive soil is mostly composed of paleo-clay with the value of cohesion C mainly from 42 kPa to 70 kPa, and the φ value mostly from 10.3° to 19.1°. The free movement of the soil particles is limited, and soil holes are usually formed at the bottom of the soil layer in the soil body. In the structure of class ➁, the upper part is composed of cohesive soil; the middle part is soft soil (residual red clay in the shape of soft plastic-flow plastic); the lower part is composed of soluble rock, in which the red clay --weathering residues of the limestone surface --is prone to soften in the shape of soft-fluid plastic in water. Mainly distributed in solution grooves with uneven thicknesses, the red clay usually loses with the action of gravity or suction force, and hence is developed into soil holes. In the structure of class ➂, the upper part is composed of cohesive soil; the middle part is the red layer (K2E1g red sandstone); the lower part is soluble rock. In this structure, soil holes are difficult to form due to the barrier of red layer; therefore, karst ground collapse is not likely to occur under the natural condition. According to the different physical and mechanical characteristics of soil bodies, the process mechanism of karst ground collapse is various in different geological structures. Soil-hole collapse mainly occurs in the structure of class ➀. The disaster evolution process can be summarized as follows: (A) In the undisturbed stage, the karst water level drops little, and the small value of the suction negative pressure leads to the failure of soil denudation caused by insufficient suction force. Therefore, there is no significant change in the soil body. (B) Affected by the repeated fluctuations of karst groundwater level or human engineering activities, the soil hole is developed initially along the surface of the open karst cave, when the corrosion absorption force is greater than the collapse resistance force of the soil itself. Then the soil of the cave roof collapsed, and the continuous collapse upward contributes to the expanding of the soil hole and the thinning of its roof. (C) The hole continues to expand upwards, and the roof of the soil hole keeps balanced under the friction force generated by the lateral pressure of soil around it. In the early stage of imminent collapse, the ground surface often presents a small amount of subsidence deformation. (D) Induced by natural or man-made factors, the surrounding friction can not balance the gravity of the roof of soil hole. Consequently, the roof may collapse quickly. In the structure of class ➁, there mainly occurs compound collapse of mud flow+soil hole. The process of disaster formation and evolution can be summarized as follows: (A) Thick layers of soft soil and cohesive soil are developed on the upper soluble rock. The karst opening is in the stable stage due to the blockage of the cohesive soil. (B) Affected by fluctuations of karst groundwater level or human engineering activities, the soft soil flows and loses to the cave fissure, which forms the mudflow hole, and the hole quickly expands to the top of the soft soil. (C) The soil hole continues to expand upward in the layer of cohesive soil, and the roof of the soil hole keeps balanced under the friction force generated by the lateral pressure of soil around it. In the early stage of imminent collapse, the ground surface often presents a small amount of subsidence deformation. (D) Induced by natural or man-made factors, the surrounding friction can not balance the roof of soil hole (dead weight+loading); consequently, the roof collapsed quickly. Besides, the quick loss of red clay in shapes of soft plastic-fluid plastic accelerates karst ground collapse. In the structure of class ➂, it is unlikely to occur collapse because the barrier of red layer makes it difficult to form the cohesive soil. Combined with the formation mechanism of collapse, the formation and evolution of soil hole can be monitored by optical fiber, and induced factors such as groundwater levels and water pressures should also be monitored. During the deformation and collapse stage, precise leveling or GPS monitoring can be used to monitor surface deformation because the ground surface often presents a small amount of subsidence deformation before the imminent collapse. [ABSTRACT FROM AUTHOR]

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Copyright of Chinese Journal of Contemporary Pediatrics is the property of Xiangya Medical Periodical Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on multiobjective scenarios to simulate land use patterns, we quantitatively assessed the synergistic relationships of ecosystem service trade-offs and overall development trends. Our findings help with formulating ecosystem service management strategies to improve the quality of the regional ecology and the human habitat. Taking Wuhan metropolitan area as an example, we used GIS and InVEST models to quantitatively assess grain provision, carbon storage, soil conservation, water yield, and nitrogen retention during 2005 to 2020. We also used the FLUS coupled model to simulate the ecosystem services under three scenarios of natural development, cultivated land protection, and ecological protection in 2035 and assess their trade-off synergies. The results showed that the construction land and water areas increased by 1 126.59 km² and 72.67 km², respectively, in Wuhan metropolitan area from 2005 to 2020, while the cultivated land, forest land, grass land and unused land areas increased by 1 019.56, 125.62, 14.77 km², and 39.31 km², respectively. The growth rate of construction land under the cultivated land and ecological protection scenarios will be much lower than under the natural development scenario, and the expansion of construction land will be curbed. From 2005 to 2020, the capacity of grain provision, soil conservation, water yield, and nitrogen retention increased and the carbon storage capacity decreased. Water yield services will be best under the natural development scenario, nitrogen retention and soil conservation services will be substantially reduced under the cultivated land protection scenario, and trade-off effects between ecosystem services will be enhanced. In the ecological protection scenario, the carbon sequestration, soil conservation, and nitrogen conservation services will be the strongest, and the trade-off effects between other ecosystem services, except for grain provision and carbon storage, will be optimized. Compared with the natural development and cultivated land protection scenarios, the ecosystem service value under the ecological protection scenario, will increase by CNY 354 million and CNY 469 million, respectively. Therefore, for territorial spatial planning and management, we should adhere to the ecological priority strategy, properly handle the three-line demarcation problem, optimize the allocation of land resources, and realize the coordinated development of economics and ecological civilization construction. [ABSTRACT FROM AUTHOR]

Objectives: Differential interferometric synthetic aperture radar(DInSAR) has been widely used in large-scale surface deformation monitoring. However, the surface deformation obtained from spaceborne synthetic aperture radar(SAR) data is easily affected by atmospheric noise, and the long revisit period leads to the incoherence. In order to effectively reduce these effects, we propose a method to monitor the deformation of highway slope by vehicle-borne InSAR system. Methods: Due to the orbit control of the vehicleborne dual-antenna InSAR system, the spatial baseline of the interferometric pairs is close to zero. Therefore, when the DInSAR data with this system is used to extract the deformation information, it can avoid the flat phase, which greatly simplifies the differential interference processing process. Results:A certain area of Wuhan, Hubei Province is chosen as the experimental area. Seven corner reflectors are deployed in the test area to evaluate the accuracy of deformation information extracted using the vehicle-borne dual-antenna InSAR system. The deformation of seven reflectors is calculated by using the proposed method. The root mean square error of deformation between the real value and the calculated value is 2.206 mm. Conclusions: A deformation monitoring method of zero space baseline using the vehicle-borne dual-antenna InSAR system is proposed and verified in Wuhan city. The DInSAR method based on zero space baseline can avoid the process of the flat phase. At the same time, our system is small in size, and the design of the trajectory according to the actual needs is flexibly, which is very practical for small-scale highway slope deformation monitoring. Because of the small revisit period, the vehicle-borne InSAR Data will not produce phase error due to atmospheric delay, and the deformation measurement accuracy is high. [ABSTRACT FROM AUTHOR]

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[Objectives] To investigate cockroach community structure in the Wuhan area, including long-term changes in the abundance of different species and successional characteristics, in order to improve the control of urban cockroaches. [Methods] We used fresh bread crumbs as bait and sticky paper to trap and investigate the diversity of the cockroach community in six typical habitats, including residential areas, restaurants, hotels, farmers' markets, hospitals and supermarkets in the Wuhan area from 1995 to 2019. [Results] A total of 41 257 cockroaches were captured, which were classified into 1 family, 2 genera and 4 species. Blattella germanica and Periplaneta fuliginosa were the dominant species, with relative abundances of 77.99% and 15.36%, respectively. Periplaneta americana was a common species with a relative abundances of 6.64%, whereas Periplaneta australasiae was a rare species with a relative abundance of just 0.01%. Consistent with the annual trend in overall cockroach density, annual variation in B. germanica density first increased, then decreased. Annual variation in the density of P. fuliginosa and P. americana trended downwards. Cockroaches can be captured throughout the year in the Wuhan area but there is a single peak in abundance September. There were significant differences in cockroach density between different habitats (F=9.048, P<0.01). The highest density (1.65 per trap) was in farmers' markets where the annual population trend was upward, whereas the lowest density (0.11 per trap) was in hospitals where populations tended to be stable. The density of cockroaches in residential areas slowly decreased over time, and that in restaurants and hotels first increased, then decreased. Cockroach communities in different years can be divided into four groups by systematic clustering and a non-metric multidimensional scale ranking analysis. [Conclusion] Cockroach community structure in the Wuhan area has undergone significant changes. The dominant species have gradually changed from P. fuliginosa and P. americana to B. germanica. There were obvious annual changes in the population density of different species in different habitats. It is necessary to focus the prevention and control of cockroaches in key places such as farmers' markets, restaurants, hotels, and supermarkets. There is a particular need for vigilance in farmer's markets to prevent cockroaches reaching high densities. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)