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关键词： 树脂修复   CAD/CAM全瓷贴面修复   前牙间隙   美学效果   并发症  

摘要： 目的:比较树脂与CAD/CAM全瓷贴面修复前牙间隙的效果。方法:对2023年2月—2024年1月收治的185例前牙间隙修复患者(333颗患牙)的病例资料进行回顾分析,按修复方式分为对照组(92例,患牙170颗)和试验组(93例,患牙163颗),对照组行树脂修复,试验组行CAD/CAM全瓷贴面修复。比较2组临床疗效、咀嚼功能、牙周健康状况、美学效果及并发症。采用SPSS 25.0软件包对数据进行统计学分析。结果:试验组总有效率显著高于对照组(P<0.05)。治疗后1个月,2组咀嚼功能评分显著升高(P<0.05),且试验组更高(P<0.05)。试验组牙龈指数(gingival index,GI)、菌斑指数(plaque index,PI)评分显著低于对照组(P<0.05),2组探诊深度(probing depth,PD)相比,差异无统计学意义(P>0.05)。试验组基牙敏感程度和牙髓状态、与邻牙颜色匹配度、修复体边缘颜色和完整度等级分布显著优于对照组(P<0.05)。2组并发症总发生率相比无统计学差异(P>0.05)。结论:与树脂相比,CAD/CAM全瓷贴面修复前牙间隙效果更佳,可改善患者咀嚼功能与牙周健康状况,提升美学效果,降低并发症发生率。

关键词： 纺织工程学会   纺织产业   纽带作用   丝绸之路   产业链   纺织品   山西省  

摘要： “桂布白似雪,吴绵软于云。”我国的纺织技艺历史悠久,纺织品在世界上享有盛名,更带动了举世闻名的“丝绸之路”的开通,搭建了东西方沟通的桥梁。时至今日,我国已经拥有了世界上规模最大、产业链最完整、门类最齐全的纺织产业。党的二十大报告指出。

关键词： digital dentistry   jaw relation transfer   Restorative space transfer   segmented arch stereolithographic template  

摘要： A digital workflow is presented for multiple transfers of targeted jaw relation and restorative spaces from interim to definitive restorations in patients with severe tooth wear. Following analysis of the targeted restorative space, segmented arch stereolithographic templates were digitally created and fabricated for precise control of reduction depth. Then, the jaw relation was transferred from the initially determined stabilization splint to the temporary fixed restoration and definitive restoration by using a digital articulator. This digital approach yielded a stabilized jaw relationship and restorative spaces transferring effect throughout successive stages of occlusal reconstruction resulting in satisfactory prosthetic outcomes.

关键词： straw returning   chopping device   constant breath cam   discrete element method  

摘要： Straw incorporation offers significant advantages in agricultural crop cultivation systems. Mechanized methods constitute the predominant approach, potentially reducing yield costs and enhancing operational efficiency. The imperative to enhance the quality of straw chopping within the field is of particular significance, as suboptimal chopping quality can engender a cascade of issues, particularly seeding blockages. The straw chopping pass rate (CPR) is a pivotal metric for assessing the quality of straw chopping. Therefore, enhancing the CPR during the straw chopping process is necessary. This study introduces a novel maize-straw-chopping device with the ground as its supporting base. This device facilitates the rapid vertical chopping of maize straw through a constant breath cam transmission mechanism. Critical parameters were determined to optimize the performance of the chopping device by establishing mathematical models and kinematic simulation analysis methods. With the help of Rocky 2022.R2 software, the influence of the rotational velocity of the draft, tractor velocity, and blade edge angles on the CPR during the operation of the device was analyzed. The Box-Behnken test methodology was used to carry out a three-factor, three-level orthogonal rotation test to obtain the optimal working parameter combination. The results indicated that the maximum CPR value was achieved with a draft rotational velocity of 245 rpm, a tractor velocity of 3.8 km/h, and a blade edge angle of 20.75 degrees. Finally, field validation experiments were conducted under these optimized conditions, with the average CPR of maize straw reaching an impressive 91.45%. These findings have significant implications for enhancing crop production practices.

关键词： Divorce   Divorce intervention   RCT   sick days   Digital intervention  

摘要： Few digital divorce interventions have undergone rigorous randomized control trial study (RCT) testing of their physical and psychological health effects. This paper describes the Cooperation after Divorce (CAD) intervention including background, target group, design and engagement strategies, intervention development, content, and theoretical cornerstones. The 17-module digital psychoeducational intervention addresses three main content areas: (1) the divorcee themselves, (2) the children, and (3) co-parenting. The content of the modules provided psychoeducation and therapeutic activities focused on the maladaptive interactional patterns between former partners and how to develop new interactional schemas, including a focus on when and how to communicate with the former partner in a way that does not escalate conflict. A randomized controlled trial (N = 778) assessed the effect of CAD in terms of number of sick days. Participants were assessed at 3-, 6- and 12-month post-divorce. Independent samples t test revealed that participants in the intervention group on average reported 5.82 fewer sick days one year post-divorce than did participants in the control condition. The results suggest that digital post-divorce interventions decrease sick days for newly divorce individuals, thereby offering long-term human, family, and public health benefits.

关键词： calcification   cardiovascular intervention   clinical trial   coronary   lithotripsy  

摘要： BACKGROUND: Coronary intravascular lithotripsy (IVL) safely facilitates stent implantation in severely calcified lesions. AIMS: This analysis sought to determine the relative impact of IVL on acute and long-term outcomes specifically in calcified nodules (CNs). METHODS: Individual patient-level data (N=155) were pooled from the Disrupt CAD optical coherence tomography (OCT) substudies. Severely calcified lesions with and without CNs were compared by OCT for acute procedural results and for target lesion failure (TLF) at 2 years - a composite of cardiac death, target vessel myocardial infarction, and ischaemia-driven target lesion revascularisation. RESULTS: A CN was identified in 18.7% (29/155) of lesions. When comparing lesions with and without CNs, there were no significant differences in preprocedure minimal lumen area or diameter stenosis;however, the mean calcium angle and calcium volume were greater in CN lesions. Despite a higher calcium burden, the final minimal stent area (CN: 5.7 mm2 [interquartile range {IQR} 4.4, 8.3] vs non-CN: 5.7 mm2 [IQR 4.7, 7.2];p=0.80) and stent expansion (CN: 79.3% [IQR 64.3, 87.0] vs 80.2% [IQR 68.9, 92.4];p=0.30) were comparable between the two groups. In the CN group, the final stent area and expansion at CN sites were 7.6 mm2 (IQR 5.5, 8.5) and 89.7% (IQR 79.8, 102.5), respectively. The cumulative incidence of TLF at 2 years was 13.9% and 8.0% in the CN and non-CN groups, respectively (p=0.32). CONCLUSIONS: Despite a greater calcium volume in CNs, IVL use was associated with comparable stent expansion and luminal gain in both CN and non-CN lesions. Further studies powered for clinical outcomes comparing different plaque modification techniques in this lesion subset are warranted.

关键词： CAD   Valvular heart diseases   Arrhythmia   Cardiac surgery   Heart failure   CAD   Valvular heart diseases   Arrhythmia   Cardiac surgery   Heart failure  

摘要： The German Heart Report, compiled under the auspices of the German Heart Foundation, summarizes the most important developments in the treatment of heart diseases in Germany every year. The current 2024 update reflects data assessed in 2022. This article provides an overview of the most important observations from the perspective of the German Cardiac Society and the German Society for Thoracic, Cardiac and Vascular Surgery.

关键词： tuberculosis   vision transformer (ViT)   deep learning   machine learning   CAD   predict   chest X-rays  

摘要： Background: Tuberculosis (TB) is a bacterial disease that mainly affects the lungs, but it can also impact other parts of the body, such as the brain, bones, and kidneys. The disease is caused by a bacterium called Mycobacterium tuberculosis and spreads through the air when an infected person coughs or sneezes. TB can be inactive or active;in its active state, noticeable symptoms appear, and it can be transmitted to others. There are ongoing challenges in fighting TB, including resistance to medications, co-infections, and limited resources in areas heavily affected by the disease. These issues make it challenging to eradicate TB. Objective: Timely and precise diagnosis is essential for effective control, especially since TB often goes undetected and untreated, particularly in remote and under-resourced locations. Chest X-ray (CXR) images are commonly used to diagnose TB. However, difficulties can arise due to unusual findings on X-rays and a shortage of radiologists in high-infection areas. Method: To address these challenges, a computer-aided diagnosis (CAD) system that uses the vision transformer (ViT) technique has been developed to accurately identify TB in CXR images. This innovative hybrid CAD approach combines ViT with Principal Component Analysis (PCA) and machine learning (ML) techniques for TB classification, introducing a new method in this field. In the hybrid CAD system, ViT is used for deep feature extraction as a base model, PCA is used to reduce feature dimensions, and various ML methods are used to classify TB. This system allows for quickly identifying TB, enabling timely medical action and improving patient outcomes. Additionally, it streamlines the diagnostic process, reducing time and costs for patients and lessening the workload on healthcare professionals. The TB chest X-ray dataset was utilized to train and evaluate the proposed CAD system, which underwent pre-processing techniques like resizing, scaling, and noise removal to improve diagnos

关键词： CAD   diseases   feature extraction   image processing   image segmentation   medical image processing  

摘要： Retinal microaneurysm (MA) is a definite earliest clinical sigh of diabetic retinopathy (DR). Its automatic segmentation is key to realizing intelligent screening for early DR, which can significantly reduce the risk of visual impairment in patients. However, the minute scale and subtle contrast of MAs against the background pose challenges for segmentation. This paper focuses on automatic MA segmentation in fundus images. A novel pyramid feature fusion network (PFFNet) that progressively develops and fuses rich contextual information by integrating two pyramid modules is proposed. Multiple global pyramid scene parsing (GPSP) modules are introduced between the encoder and decoder to provide diverse global contextual information for the decoder through reconstructing skip connections. Additionally, a spatial scale-aware pyramid (SSAP) module is introduced to dynamically fuse multi-scale contextual information. This rich contextual information will help to identify MAs from low-contrast background. Furthermore, to mitigate issue related to category imbalance, a combo loss function is introduced. Finally, to validate the effectiveness of the proposed method, experiments are conducted on two publicly available datasets, IDRiD and DDR, and PFFNet is compared with several state-of-the-art models. The experimental results demonstrate the superiority of our PFFNet in the MA segmentation task.