高分辨MRI在肛瘘诊断及Parks分型中的应用价值

目的 探讨高分辨MRI在肛瘘诊断及Parks分型中的应用价值。方法 选取肛瘘接受手术治疗患者108例,均行MRI检查,以手术结果为金标准,分析患者MRI特征及Parks分型。结果 108例中总计检出内口112个、瘘管124个、外口112个、肛周脓肿35个,与手术确诊结果对比差异无统计学意义(P>0.05),其中括约肌间型64例、经括约肌型30例、括约肌上型11例、括约肌外型3例,与手术确诊结果对比差异无统计学意义(P>0.05)。结论 MRI应用于肛瘘诊断并进行Parks分型,能清晰显示出内口、外口、瘘管、脓肿位置以及数目信息。

显微镜下改良Parks切口斜视矫正术治疗水平共同性斜视患儿的效果及其对泪膜功能的影响

目的探探讨显微镜下改良Parks切口斜视矫正术治疗水平共同性斜视患儿的效果及其对泪膜功能的影响。方法选取我科2017年6月至2019年11月期间95例水平共同性斜视患儿作为研究对象,按照随机数字表法分成两组,均行斜视矫正术,对照组47例给予术中作角膜缘梯形结膜瓣切口,观察组48例给予显微镜下改良Parks切口,1个月后对比两组患儿视功能改善效果、手术效果、泪膜功能。结果观察组治疗后总有效率95.83%高于对照组89.36%(χ^(2)=0.6632,P=0.4154);观察组水平共同性斜视患儿手术时间明显短于对照组(t=11.9892,P=0.0000);观察组患儿治疗后泪液分泌量高于对照组(t=15.0051,P=0.0000),泪膜破裂时间较对照组上升(t=9.2228,P=0.0000),角膜荧光染色评分较对照组降低(t=10.7815,P=0.0000)。结论显微镜下改良Parks切口斜视矫正术治疗水平共同性斜视效果确切,能够显著矫正眼部,改善患儿视功能及泪膜功能,安全可靠,值得应用。

Terrain or climate factor dominates vegetation resilience?Evidence from three national parks across different climatic zones in China

Vegetation resilience(VR),providing an objective measure of ecosystem health,has received considerable attention,however,there is still limited understanding of whether the dominant factors differ across different climate zones.We took the three national parks(Hainan Tropical Rainforest National Park,HTR;Wuyishan National Park,WYS;and Northeast Tiger and Leopard National Park,NTL)of China with less human interference as cases,which are distributed in different climatic zones,including tropical,subtropical and temperate monsoon climates,respectively.Then,we employed the probabilistic decay method to explore the spatio-temporal changes in the VR and their natural driving patterns using Geographically Weighted Regression(GWR)model as well.The results revealed that:(1)from 2000 to 2020,the Normalized Difference Vegetation Index(NDVI)of the three national parks fluctuated between 0.800 and 0.960,exhibiting an overall upward trend,with the mean NDVI of NTL(0.923)>HTR(0.899)>WYS(0.823);(2)the positive trend decay time of vegetation exceeded that of negative trend,indicating vegetation gradual recovery of the three national parks since 2012;(3)the VR of HTR was primarily influenced by elevation,aspect,average annual temperature change(AATC),and average annual precipitation change(AAPC);the WYS'VR was mainly affected by elevation,average annual precipitation(AAP),and AAPC;while the terrain factors(elevation and slope)were the main driving factors of VR in NTL;(4)among the main factors influencing the VR changes,the AAPC had the highest proportion in HTR(66.7%),and the AAP occupied the largest area proportion in WYS(80.4%).While in NTL,elevation served as the main driving factor for the VR,encompassing 64.2%of its area.Consequently,our findings indicated that precipitation factors were the main driving force for the VR changes in HTR and WYS national parks,while elevation was the main factors that drove the VR in NTL.Our research has promoted a deeper understanding of the driving mechanism behind the VR.

Low-Density Microplastics in Recreational Parks of Al Ain, United Arab Emirates: Abundance, Composition, and Potential Effects on Soil Health

Microplastics (MPs) have been an emerging concern due to their harmful effects on the ecosystem and are ubiquitous in various habitats, from marine to terrestrial environments. However, studies on the presence of MPs in recreational areas are limited. One of the previous works has reported that urban recreational parks are considered “sinks” for plastic debris, including MPs. In this study, low-density MPs (LD-MPs) in soil samples collected from recreational parks of Al Ain, United Arab Emirates (UAE) were isolated by density flotation method. Results showed that these parks have varying levels of LD-MPs caused by various anthropogenic activities, such as sludge use and application of reclaimed water from wastewater treatment facilities in those areas. These plastic particles were isolated in 87% of the soil samples, with an average concentration of 1550 ± 340 MPs/kg. Predominantly, these comprised large LD-MPs (300 - 5000 μm), with red and blue being the most common colors. Fourier transform infrared (FTIR) spectroscopy identified possible synthetic polymers, including polyethylene and polypropylene. Additionally, a negative correlation was observed between LD-MP concentration and soil pH and moisture content, indicating potential adverse effects on soil health. These findings highlight the need for monitoring and managing microplastic pollution in urban recreational areas to mitigate its ecological impacts.

Exploring impacts of COVID-19 on spatial and temporal patterns of visitors to Canadian Rocky Mountain National Parks from social media big data

COVID-19 posed challenges for global tourism management.Changes in visitor temporal and spatial patterns and their associated determinants pre-and peri-pandemic in Canadian Rocky Mountain National Parks are analyzed.Data was collected through social media programming and analyzed using spatiotemporal analysis and a geographically weighted regression(GWR)model.Results highlight that COVID-19 significantly changed park visitation patterns.Visitors tended to explore more remote areas peri-pandemic.The GWR model also indicated distance to nearby trails was a significant influence on visitor density.Our results indicate that the pandemic influenced tourism temporal and spatial imbalance.This research presents a novel approach using combined social media big data which can be extended to the field of tourism management,and has important implications to manage visitor patterns and to allocate resources efficiently to satisfy multiple objectives of park management.

Spatial-temporal Patterns of Urban Parks’Effects on the Sentiments and Their Associated Factors Based on Social Media Data——a Case Study in Beijing

As the pivotal green space,urban parks play an important role in urban residents’daily activities.Thy can not only bring people physical health,but also can be more likely to elicit positive sentiment to those who visit them.Recently,social media big data has provided new data sources for sentiment analysis.However,there was limited researches that explored the connection between urban parks and individual’s sentiments.Therefore,this study firstly employed a pre-trained language model(BERT,Bidirectional Encoder Representations from Transformers)to calculate sentiment scores based on social media data.Secondly,this study analysed the relationship between urban parks and individual’s sentiment from both spatial and temporal perspectives.Finally,by utilizing structural equation model(SEM),we identified 13 factors and analyzed its degree of the influence.The research findings are listed as below:①It confirmed that individuals generally experienced positive sentiment with high sentiment scores in the majority of urban parks;②The urban park type showed an influence on sentiment scores.In this study,higher sentiment scores observed in Eco-parks,comprehensive parks,and historical parks;③The urban parks level showed low impact on sentiment scores.With distinctions observed mainly at level-3 and level-4;④Compared to internal factors in parks,the external infrastructure surround them exerted more significant impact on sentiment scores.For instance,number of bus and subway stations around urban parks led to higher sentiment scores,while scenic spots and restaurants had inverse result.This study provided a novel method to quantify the services of various urban parks,which can be served as inspiration for similar studies in other cities and countries,enhancing their park planning and management strategies.

Practical Experience of Management of Urban Parks at Home and Abroad

By systematically reviewing the practical experience of management of urban parks at home and abroad,the advanced experience in organization,management system,operation mechanism and social participation were summarized,and the optimization and improvement measures for the construction and management of urban parks in Chengdu were proposed to provide reference for the high-level construction,high-quality experience and efficient management of urban parks in the construction of park city demonstration zone in Chengdu.

Parks松挂线术与分次紧线挂线法治疗高位复杂性肛瘘的效果比较

目的对比Parks松挂线术与分次紧线挂线法治疗高位复杂性肛瘘的效果。方法120例高位复杂性肛瘘患者随机分为两组,对照组采用Parks松挂线术进行治疗,研究组采用分次紧线挂线法进行治疗,比较两组的治疗效果、伤口愈合时间以及肛门功能。结果研究组的治疗总有效率高于对照组,伤口愈合时间长于对照组(P<0.05)。术后1个月,两组的Wexner评分均较治疗前降低(P<0.05),但组间差异无统计学意义(P>0.05)。结论Parks松挂线术与分次紧线挂线法均能有效改善高位复杂性肛瘘患者的肛门功能;相较于Parks松挂线术,分次紧线挂线法的疗效更好,但患者恢复时间相对较长。

Recreational Behavior and Spatial Characteristics of Urban Parks Based on Multi-Source Information: A Case Study of Xiaohong Stone Carving Park in Nanjing

Urban parks are an important part of urban recreational spaces,and the development of analysis framework of recreational behavior and space is helpful for the design of urban parks to better meet the activity and usage requirements of visitors.In this paper,Xiaohong Stone Carving Park in Nanjing was taken as the research object to explore the relationship between landscape space and user behavior for design feedback.The orthographic image technology of unmanned aerial vehicle(UAV)and machine deep learning were used to analyze users behavior activities in the park,and the spatial characteristics of each node in the park were evaluated by semantic differential scale to explore the potential causes of behavior activities.The results showed that①there were significant differences in the number of visitors on holidays and working days,and young people and children were the main users.②The users activity of the park differed greatly on the inner and outer tour roads,and the users showed stronger willingness to stay on the inner tour roads.Recreational activities received more attention than cultural ones.③The overall distribution of users was significantly affected by hydrophilicity,and the recreational behavior and activity type were affected by multiple factors which include the hydrophilicity,safety,accessibility of cultural relics and the amount of recreational facilities.Finally,the enhanced strategies such as improving the cultural tour system,establishing hydrophilic safety belts and optimizing recreational facilities were put forward.

Exploration of Detailed Planning Practice of Chemical Industrial Parks under the Background of Territorial Space Planning

With the gradual completion of the overall planning of city and county land space,the detailed planning will be prepared according to the requirements of transmitting and refining the upper planning.Industrial parks are one of the“main forces”of local economic development,and the preparation of their detailed planning will escort their development.The key points of theControlIndicatorsofConstruction LandinIndustrialProjectsissued in 2008 and 2023 were compared,and the new requirements for detailed planning under the background of territorial space and the contradictions between the detailed planning of industrial parks and the overall planning of the upper territorial space were sorted out based on the summary of the existing problems in the development of chemical parks.It provides some ideas for the practice of detailed planning of chemical industrial parks under the background of territorial space.

Development Strategies for Urban Parks in Chongqing’s Main District:A New Paradigm for Urban Green Spaces

With the advent of the new concept of an“urban park”and the new paradigm of urban development,Chongqing Municipality has actively embraced this vision,integrating it with the city’s unique geographical and demographic conditions.The city has prioritized urban park construction as a key project for public welfare,aiming to address issues such as uneven geographical distribution,limited functionality,and mismatched supply and demand.This initiative seeks to optimize urban parks as vital public resources while protecting the ecological environment.Adhering to principles of functional priority,safety and comfort,shared development,and distinctive features,Chongqing has incorporated parks and other green open spaces into its basic urban planning.This approach aims to create beautiful,comfortable and age-friendly shared urban spaces.This study,grounded in the urban park development concept and the characteristics of a mountainous,multi-center city,constructs a model to measure urban park satisfaction in Chongqing’s main urban area.The model considers supply-demand matching and resident satisfaction.It aims to systematically review relevant policies,plans,and cutting-edge theories,analyze the urban park development in Chongqing,understand residents’needs,and address issues related to supply-demand matching,multifunctionality,and quality construction.The findings provide insights into the development and conservation of urban parks in Chongqing and beyond,aiming to continually meet the public’s growing desire for a better quality of life and support high-quality development.

Research on Key Points of Design of Standard Plants in Modern Industrial Parks Under the Background of Promoting the Development of New Quality Productive Forces

With the progress of science and technology and the acceleration of industrialization,the modern industrial park is an important carrier of industrial development.The importance of its standard plant design has become increasingly prominent.With the development of new quality productive forces as the background,this research deeply discusses the key points of standard plant design in modern industrial parks.This paper uses literature review and case analysis to systematically analyze the important role of standard plant design in developing new quality productive forces in modern industrial parks and puts forward suggestions for optimizing design.It is found that the rationality,intelligence,and environmental protection of plant design are the key factors affecting the development of new quality productive forces.The paper summarizes the core points of modern industrial park standard plant design to provide a reference for the future development of related industries.

经肛括约肌间切开术(TROPIS)联合改良Parks术治疗高位经括约肌肛瘘的临床疗效及对患者生活质量的影响

分析对高位经括约肌肛瘘患者提供经肛括约肌间切开术(TROPIS)联合改良Parks术治疗的临床意义。方法 实验样本收录时间制定为2022年1月至2023年12月,样本制定为高位经括约肌肛瘘患者,数量为42例,利用电脑抽号法分为2组,研究组:21例、TROPIS联合改良Parks术治疗,常规组:21例、常规切开挂线术治疗,对比两组的不同。结果 研究组患者的生活质量、Wexner失禁评分、创面愈合时间、治疗效果等均高于常规组(p均<0.05)。结论 对于高位经括约肌肛瘘患者而言,为患者提供TROPIS联合改良Parks术治疗,这种方式获得的效果更佳。

改良Parks切口与角膜缘切口治疗斜视的效果及对眼表环境的影响

目的探讨改良Parks切口与角膜缘切口治疗斜视的效果及对眼表环境的影响。方法选择2019年1月至2022年1月宝鸡市人民医院眼科收治的200例斜视患者展开研究,按照随机数表法分为观察组和对照组各100例,两组患者均接受斜视手术治疗,观察组患者使用改良Parks切口,对照组患者使用角膜缘切口。比较两组患者术后2周的临床疗效,术前、术后2周泪液分泌试验(SIT)、泪膜破裂时间(BUT)、干眼症状评分、角膜荧光素染色(FL)评分的变化及并发症发生率。结果术后2周,观察组患者的临床治疗总有效率为95.00%,明显高于对照组的86.00%,差异有统计学意义(P<0.05);术后2周,观察组患者的SIT、BUT分别为(10.87±1.65)mm/5 min、(10.50±1.63)s,明显高于对照组的(9.49±1.34)mm/5 min、(9.26±1.75)s,差异均有统计学意义(P<0.05);术后2周,观察组患者的干眼症状评分、FL评分分别为(1.87±0.20)分、(1.14±0.12)分,明显低于对照组的(2.42±0.34)分、(1.38±0.14)分,差异均有统计学意义(P<0.05);观察组患者的并发症总发生率为2.00%,明显低于对照组的9.00%,差异有统计学意义(P<0.05)。结论与角膜缘切口相比,改良Parks切口治疗斜视患者的效果更好,其不仅可提高临床疗效,且对眼表环境影响小。

显微镜下Parks切口美容矫正术治疗成人斜视的美学效果观察

目的:探讨显微镜下Parks(帕克斯)切口美容矫正术治疗成人斜视的疗效。方法:选取2019年1月-2020年12月收治的64例成人斜视患者作为研究对象。所有患者采用显微镜下Parks切口美容矫正手术进行治疗,术后随访1年,对其临床治疗效果、眼位、视功能、术后并发症进行记录分析。结果:治疗有效率为100%,治愈率为93.75%,4例患者情况好转,好转率为6.25%;术后半年,患者的Ⅰ级、Ⅱ级、Ⅲ级功能形成比率明显高于术前;术后一年满意度96.88%,明显优于术后半年85.94%(P<0.05)。结论:显微镜下Parks切口美容矫正术治疗成人斜视的疗效确切,外观正常,同时可提高患者生活质量,达到美学效果。

MRI在肛瘘诊断及Parks分型中的应用价值

目的分析MRI在肛瘘诊断及Parks分型中的应用价值。方法选取2019年5月~2022年5月期间我院经手术证实的肛瘘患者76例,所有患者均采用体部相控阵线圈,行MRI平扫及GD-DTPA增强扫描。分析患者M RI图像特征并进行Parks分型,将MRI检查结果与手术结果进行统计学对比。结果(1)76例患者手术结果显示内口82个,瘘管92个,外口80个,肛周脓肿27个。术前MRI准确诊断内口78个,瘘管86个,外口77个,肛周脓肿27个。MRI诊断准确率(95.1%、93.5%、96.3%、100%)与手术结果比较无显著差异(P>0.05)。(2)术后Parks分型包括括约肌间型45例,经括约肌型21例,括约肌上型8例,括约肌外型2例。术前MRI正确分型69例(90.8%),其中括约肌间型41例,经括约肌型19例,括约肌上型7例,括约肌外型2例。MRI诊断准确率(91.1%、90.5%、87.5%、100%)与手术结果比较无显著差异(P>0.05)。结论MRI可以准确地对肛瘘进行Parks分型,并可清晰显示内口、外口、瘘管、脓肿的位置及数目等信息,在肛瘘的术前诊断中有着较高的应用价值。

PARK2介导的帕金森病中帕金蛋白对α-突触核蛋白的作用

帕金森病(PD)是常见的神经退行性疾病之一,主要表现为运动障碍,伴有主要运动症状,如运动迟缓、僵直性和静息性震颤,还可能表现为多种非运动症状,如自主神经功能障碍、认知障碍、睡眠障碍和神经精神症状〔1〕。

显微镜下Parks切口美容矫正术治疗成人斜视的疗效分析

目的:研究显微镜下帕克斯(Parks)切口美容矫正术治疗成人斜视的疗效。方法:选取2019年5月-2021年11月兰州普瑞眼科医院收治的80例成人斜视患者作为研究对象,按随机数字表法分成两组,各40例。对照组行角膜缘梯形结膜瓣切口矫正术治疗,研究组行显微镜下Parks切口美容矫正术治疗。术后1周观察两组斜视矫正效果、泪膜功能及术后并发症发生率。结果:研究组患者的斜视矫正总有效率高于对照组,差异有统计学意义(P=0.034)。术前,两组泪液浸湿长度、角膜荧光染色评分比较,差异无统计学意义(P>0.05)。术后1周,两组泪液浸湿长度长于术前,角膜荧光染色评分低于术前,差异有统计学意义(P<0.05);研究组泪液浸湿长度长于对照组,角膜荧光染色评分低于对照组,差异有统计学意义(P=0.000)。研究组并发症发生率低于对照组,差异有统计学意义(P=0.043)。结论:显微镜下Parks切口美容矫正成人斜视的疗效确切,能促进眼位恢复,改善泪膜功能,且术后并发症少,可于临床应用推广。

The role of forest culture in green construction and management of forest parks:merging knowledge-attitude-practice and theory of planned behavior

As a cultural concept refl ecting the relationship between humans and forests,forest culture plays an active role in sustainable forest management.Forest parks provide a wide range of ecosystem services essential for the sustainable development of society,and the relationships between forest culture,green construction and management of forest parks have practical signifi cance.This study aimed to understand the interaction and process of forest culture infl uencing green construction and management in forest parks with the models Knowledge-Attitude-Practice(KAP)and Theory of Planned Behavior(TPB)by proposing a theoretical model.Four hypotheses were tested using data collected from 193 forest park employees in Heilongjiang Province,China.Our results show that forest culture had a signifi cant infl uence on green construction and forest management.In addition,subjective norm and perceived behavioral control directly impacted behavior in green construction and management of the forest park,whereas attitude did not have an impact.Subjective norm had a direct eff ect on attitude.Results between constructs show that forest culture had an indirect eff ect on planning and construction,and on ecological and economic management.Consequently,it supported three of four hypotheses within the proposed model in determining the infl uence of forest culture on green construction and management.

Path Planning and Tracking Control for Parking via Soft Actor-Critic Under Non-Ideal Scenarios

Parking in a small parking lot within limited space poses a difficult task. It often leads to deviations between the final parking posture and the target posture. These deviations can lead to partial occupancy of adjacent parking lots, which poses a safety threat to vehicles parked in these parking lots. However, previous studies have not addressed this issue. In this paper, we aim to evaluate the impact of parking deviation of existing vehicles next to the target parking lot(PDEVNTPL) on the automatic ego vehicle(AEV) parking, in terms of safety, comfort, accuracy, and efficiency of parking. A segmented parking training framework(SPTF) based on soft actor-critic(SAC) is proposed to improve parking performance. In the proposed method, the SAC algorithm incorporates strategy entropy into the objective function, to enable the AEV to learn parking strategies based on a more comprehensive understanding of the environment. Additionally, the SPTF simplifies complex parking tasks to maintain the high performance of deep reinforcement learning(DRL). The experimental results reveal that the PDEVNTPL has a detrimental influence on the AEV parking in terms of safety, accuracy, and comfort, leading to reductions of more than 27%, 54%, and 26%respectively. However, the SAC-based SPTF effectively mitigates this impact, resulting in a considerable increase in the parking success rate from 71% to 93%. Furthermore, the heading angle deviation is significantly reduced from 2.25 degrees to 0.43degrees.