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The study aims to investigate patients' perceptions of recurrence risk associated with atrial fibrillation, with the goal of establishing a theoretical foundation for developing future measurement scale and intervention strategies.
A qualitative interview study.
Seventeen patients diagnosed with atrial fibrillation at a Grade-A tertiary hospital participated in semi-structured, in-depth interviews conducted between October and December 2024. Participants were selected via purposive sampling. The data were analysed employing thematic analysis in accordance with Colaizzi's method. The study adhered to the Consolidated Criteria for Reporting Qualitative Research checklist.
The perceptions of recurrence risk among patients with atrial fibrillation can be summarised into five themes: (1) perceived likelihood of recurrence, (2) perceived severity of recurrence, (3) perceived triggers of recurrence, (4) emotional reaction to recurrence, and (5) efficacy perception of managing recurrence risk.
Perceptions of recurrence risk among patients with atrial fibrillation are diverse and often underestimated due to limited knowledge and subjective symptom interpretation, affecting health behaviours. Understanding patients' subjective appraisals, emotions, and perceived efficacy is essential. Validated assessment tools and tailored risk communication may enhance self-management and support targeted interventions.
This study provides critical insights into how atrial fibrillation patients perceive their risk of recurrence. It also provides a theoretical foundation for creating validated assessment tools and tailoring individualised health education and intervention programmes.
Patients were involved in the study design, data collection, and interpretation of findings. Their contributions included providing feedback on the initial interview guide to ensure relevance and clarity, participating in in-depth interviews to share their lived experiences with atrial fibrillation recurrence, and offering reflections on key themes emerging from the data.
To assess career satisfaction among Chinese nurses, explore influencing factors, and examine the mediating role of role breadth self-efficacy (RBSE) in the relationship between subjective age and career satisfaction.
A multi-centre, cross-sectional study.
Between June and October 2024, 2033 questionnaires were distributed to nurses across seven geographic regions in China, collecting data on demographics, subjective age, RBSE, and career satisfaction. Descriptive statistics, Pearson correlation analysis, multiple linear stepwise regression, and path analysis were used to identify determinants of career satisfaction and test the mediating effect of RBSE.
The effective response rate was 97%. Chinese nurses reported moderate-to-high career satisfaction, younger subjective age relative to chronological age, and moderate RBSE levels. Multivariate linear regression analysis identified education level, work institution, salary, weekly working hours, subjective age, and RBSE as significant predictors of career satisfaction. Path analysis revealed a significant negative association between subjective age and career satisfaction (β = −0.23, p < 0.001), which was partially mediated by RBSE (indirect effect = −0.11, 95% CI: −0.18 to −0.05).
The career satisfaction of Chinese nurses is at a moderately high level; the influencing factors include the intensity of nursing work and salary levels. There is a certain difference between the subjective age and the chronological age of Chinese nurses. RBSE partly mediates the relationship between subjective age and career satisfaction.
Valuing the breadth of nurses' roles, self-efficacy, and subjective age may help improve job satisfaction.
What problem did the study address?: This study elucidates the present level of career satisfaction among nurses in China and the variables affecting it. What were the main findings?: The subjective age of Chinese nurses influences career satisfaction, with RBSE partly mediating the connection between subjective age and career satisfaction. Where and on whom will the research have an impact?: This study presents novel variables of subjective age and RBSE in the investigation of factors influencing career satisfaction among Chinese nurses, offering new avenues for enhancing career satisfaction in this demographic in the future.
We adhered to STROBE guidelines for cross-sectional research.
This study did not include patient or public involvement in its design, conduct, or reporting.
This study aimed to examine the level of vicarious posttraumatic growth among intensive care unit nurses in China and explore the mediating role of death coping ability in the relationship between moral resilience and vicarious posttraumatic growth.
A multicentre, cross-sectional study was conducted in accordance with the STROBE guidelines.
Between January and March 2025, a questionnaire survey was conducted among 666 intensive care unit nurses from nine tertiary Grade A hospitals across five provinces in China. Participants completed three standardised instruments: the Rushton Moral Resilience Scale, the Coping with Death Scale–Short Version, and the Vicarious Posttraumatic Growth Inventory. We used IBM SPSS 27.0 for descriptive statistics, univariate analyses, and correlation analyses, and employed AMOS 27.0 to perform structural equation modelling for testing mediation effects.
Intensive care unit nurses demonstrated a moderate level of vicarious posttraumatic growth. Moral resilience was positively associated with both death coping ability and vicarious posttraumatic growth. Death coping ability was found to play a partial mediating role in the relationship between moral resilience and vicarious posttraumatic growth.
Moral resilience and death coping ability are key factors associated with vicarious posttraumatic growth among intensive care unit nurses. Nurses with stronger moral resilience are more likely to cope constructively with death-related stress, which may support psychological growth in trauma-intensive environments.
This study highlights the need to enhance intensive care unit nurses' moral and emotional capacities through ethics education, emotional coping training, and institutional support strategies. Strengthening these competencies may foster professional development and mental wellbeing in critical care settings.
Chronic venous disease, particularly lower extremity varicose veins (VVs) and incompetent perforating veins (IPVs), is a prevalent condition associated with significant morbidity, including venous ulcers and post-surgical recurrence. Current diagnostic modalities for IPVs—such as digital subtraction angiography, CT venography, magnetic resonance venography and conventional ultrasound—are limited by ionising radiation, operator dependency or inadequate spatial resolution. Ultrasound tomography (UT), an emerging automated 3D imaging technology, offers comparable resolution, wider field of view and reduced operator bias compared with conventional ultrasound. Preliminary studies suggest UT improves IPV detection rates, yet its diagnostic accuracy and clinical utility remain unvalidated in large-scale trials. This study aims to evaluate UT’s diagnostic performance and its impact on surgical outcomes in a paired-design and randomised controlled trial (RCT), addressing a critical gap in non-invasive venous assessment.
This study combines a paired diagnostic trial and a prospective, triple-blind RCT. In the paired trial (n=84), patients with VVs (Clinical-Etiological-Anatomical-Pathophysiological C2–C5) receive both conventional ultrasound and UT combined with Doppler examination to compare IPV detection sensitivity against surgical findings. The RCT (n=264) randomises patients to conventional ultrasound group (control group) or conventional ultrasound＋UT group (intervention group). After examination, all patients undergo standardised treatment (radiofrequency ablation with sclerotherapy and selective IPV ligation), with follow-up extending to 5 years. The primary endpoint is 1-year recurrence rates and secondary endpoints, including 3-month, 3-year and 5-year recurrence rates, as well as Venous Clinical Severity Scores, quality of life and Aberdeen Varicose Vein Questionnaire scores.
The study has been approved by the Ethics Committee of Shanghai Sixth People’s Hospital (approval number: 2024-132). Written informed consent will be obtained from each participant, and final results will be published in peer-reviewed journals.
The study has been registered on Chinese Clinical Trial Registry (http://www.chictr.org.cn), identifier: ChiCTR2500097289.
by Haoyang Zhou, Jinfeng Yang, Na Li, Jinying Li, Jianxin Ran, Yan Zheng, Yifan Long, Fang Cheng, Yuanpeng Liao
BackgroundSarcopenia is an age-associated disorder characterized by a progressive decline in skeletal muscle mass, strength, and physical function. The condition is linked to low levels of anabolic hormones such as insulin-like growth factor 1 (IGF-1), with its downstream phosphatidylinositol 3 kinase (PI3K)/ protein kinase B (AKT)/ forkhead box protein O3 (FOXO3) signaling pathway. There is growing evidence that resistance training (RT) or vibration training (VT) could improve physical functioning in individuals with sarcopenia. However, the related physiological influence of exercise on sarcopenia remains elusive.
MethodThis prospective randomized controlled trial will be conducted among 96 participants, aged between 65 and 80 years. In participants, sarcopenia diagnosis will be confirmed based on the Asian Working Group for Sarcopenia criteria, and participants will be randomized into either control, RT, VT, or RVT (combined RT and VT) groups. The intervention will last 12 weeks, with assessments performed at baseline, 12 weeks (after intervention), and 24 weeks (follow-up). The primary outcomes will include skeletal muscle mass, handgrip strength, and gait speed. Secondary outcomes comprise IGF-1 concentrations, PI3K/AKT and FOXO3 protein activity, quality of life, and timed-up-and-go test performance assessments.
DiscussionThis clinical study aims to elucidate the potential modulation of molecular mechanisms in vivo for combined RT and VT in sarcopenia patients and to identify the effects of the intervention on physical function.
Trial registrationChiCTR, ChiCTR2400083643. Registered on April 29, 2024.
Eye injury poses a significant challenge to the global burden of blindness. Using the Global Burden of Disease (GBD) database, this study aims to comprehensively assess the latest global burden of eye injury and examine its relationship with the Socio-Demographic Index (SDI).
Observational study.
Population-based data on eye injury from the GBD 2021 database, covering the period 1990–2021.
Primary outcomes included incidence, prevalence and years lived with disability (YLDs) due to eye injury. Secondary outcomes included temporal trends analysed using joinpoint regression, age-period-cohort effects, health inequality indices (Slope Index of Inequality (SII) and Concentration Index) and decomposition analysis of contributing factors.
From 1990 to 2021, global eye injury incidence (in thousands) increased from 33 702.80 (95% uncertainty interval (UI): 27 271.41 to 44 086.12) to 39 996.91 cases (95% UI: 32 341.74 to 52 215.74), while age-standardised incidence rates (ASIR) declined from 622.73 to 503.26 per 100 000 population (average annual percent change (AAPC): –0.63, 95% confidence interval (CI) –0.81 to –0.46, p75 years). Health inequality between SDI regions narrowed (SII decreased from 3.10 to 2.21 per 100 000), with population growth contributing 207.93% to increased incidence.
The burden of eye injury exhibits distinct patterns across development levels, requiring tailored interventions: occupational safety for young adults in developing regions and fall prevention for the elderly in developed areas. Prevention strategies should align with regional economic development stages, emphasising workplace safety in industrialising regions while maintaining robust healthcare accessibility.
Mediastinal and/or hilar lymphadenopathy (MHL) is increasingly identified owing to various underlying conditions. Minimally invasive biopsy techniques, including endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), transbronchial mediastinal cryobiopsy (TBMC) and transbronchial forceps biopsy (TBFB), are common diagnosis tools. However, their safety and diagnostic efficiency remain unclear. This trial aims to compare the diagnostic yield and safety of these three techniques.
This study is a three-arm, parallel-design, randomised controlled trial involving 972 adult patients with MHL recruited from multiple medical centres. Participants will be randomly assigned to the EBUS-TBNA, TBMC via a tunnel or TBFB via a tunnel group. The primary outcome is diagnostic yield, and the secondary outcomes include diagnostic sensitivity, sample quality and procedure-related complications. Statistical analyses will be conducted using the appropriate methods. An independent sample ² test will be used to test the differences in the diagnostic yield and incidence of procedure-related complications.
Ethics approval was obtained from the China-Japan Friendship Hospital Ethics Committee (2022-KY-194).
Written informed consent will be obtained from all patients or their guardians before their enrolment in the study. This study will be conducted per the principles established in the Declaration of Helsinki and the International Council for Harmonisation Guidelines for Good Clinical Practice.
To describe the perspectives of individuals receiving haemodialysis regarding health literacy in fluid management.
A qualitative descriptive approach using directed content analysis of interviews from an explanatory mixed methods study.
Semi-structured individual interviews were conducted from September 2020 to February 2021 with 28 individuals receiving haemodialysis who had attended a prior quantitative study. A directed qualitative content analysis approach was used to identify categories and subcategories emerging from the data.
Six categories of health literacy were identified: (1) active health management, (2) engagement with healthcare providers, (3) understanding and support from healthcare providers, (4) social support, (5) health information literacy and (6) navigation of the healthcare system.
Based on their real-life experience, individuals receiving haemodialysis have unique health literacy needs regarding fluid management. A comprehensive understanding of these unique needs is crucial in creating person-centered interventions to address inadequate fluid restriction.
Interventions to address inadequate fluid restriction should be person-centered, considering each individual's unique health literacy needs. This involves conducting a comprehensive assessment of individuals' health literacy needs, empowering individuals to actively engage in health, engaging the entire support network and facilitating health information literacy in line with individuals' preferences.
This study offers detailed insights into the health literacy needs related to fluid management in individuals undergoing haemodialysis. The findings could inform the development of person-centered fluid management strategies for these individuals.
We adhered to the Consolidated Criteria for Reporting Qualitative Research checklist.
No patient or public contribution.
Postoperative arrhythmias are common and clinically significant complications. They are a cause of increased morbidity and mortality rates in surgical patients. Although various pharmacological and procedural strategies have been explored for preventing postoperative arrhythmia, evidence regarding their effectiveness remains inconsistent. The stellate ganglion block (SGB) has emerged as a promising alternative to reduce the occurrence of postoperative arrhythmias. By summarising the existing evidence, this meta-analysis aims to assess the effectiveness of SGB in preventing postoperative arrhythmias.
We will review literature from January 1970 to April 2025 using MEDLINE, Cochrane CENTRAL and Embase. Studies eligible for inclusion will be randomised controlled trials and observational studies reporting postoperative arrhythmia incidence in surgical patients who received preoperative or intraoperative SGB. We will include articles in the following languages: English, Spanish, Chinese or Portuguese. Secondary outcomes are SGB-related complications. The risk of bias will be determined by Rob-2 and ROBINS-I tools. Meta-analyses, reporting relative risks or ORs with 95% confidence intervals will be performed when at least three studies report the same outcome under comparable conditions. Quality of evidence will be evaluated using GRADE guidelines.
We will use information from previously published manuscripts found in reputable databases, and ethical approval is not necessary.
CRD420251029643.
This study aims to examine the prevalence of elevated blood pressure (BP) among adolescents aged 13–17 years in Shiyan city, Hubei province, China. Additionally, it analyses the distribution characteristics and potential factors influencing elevated BP, providing a scientific foundation for the prevention and management of hypertension in adolescents.
Cross-sectional study.
A total of 11 schools in central China.
From October 2023 to January 2024, a cross-sectional study involving 8534 students aged 13–17 years from 11 schools in central China was conducted. Convenience sampling was used to select participants, and data were collected through questionnaires and medical physical examinations.
This study used physiological measurement to assess BP levels, while questionnaire surveys and anthropometric measurements were employed to identify associated factors.
The overall detection rate of elevated BP was 22.7% (20.2% for boys and 25.6% for girls). Increased body mass index (BMI) (OR: 1.026, 95% CI: 1.003 to 1.048), neck circumference (OR: 1.099, 95% CI: 1.073 to 1.126) and chest circumference (OR: 1.015, 95% CI: 1.007 to 1.023) were associated with an increased risk of elevated BP. Conversely, longer screen time was linked to a lower risk of elevated BP (OR: 0.961, 95% CI: 0.942 to 0.98). Girls (OR: 1.592, 95% CI: 1.419 to 1.787) were at higher risk than boys. Additionally, not consuming meat or poultry (OR: 2.029, 95% CI: 1.171 to 3.514) was identified as a risk factor for elevated BP.
The distribution of elevated BP among adolescents exhibited population heterogeneity. Elevated BP was found to be associated with higher BMI, neck circumference and chest circumference, as well as the absence of meat consumption. Additionally, targeted attention to girls is essential for preventing elevated BP.
by Mengzhen Qin, Mengyuan Qiao, Yuying Dong, Haiyan Wang
ObjectiveCompared with those without such impairment, middle-aged and older adults with sensory impairment (SI) demonstrate a greater prevalence and severity of depressive symptoms, significantly affecting their mental health. We aimed to develop and validate a depression risk prediction model for middle-aged and elderly individuals with SI.
MethodsData from the 2018 China Health and Retirement Longitudinal Study were randomly partitioned into training and validation sets at a 7:3 ratio. Within the training set, least absolute shrinkage and selection operator (LASSO) regression analysis and binary logistic regression were used to identify predictor variables, and a risk prediction column‒line graph was subsequently developed, with depression status among middle-aged and elderly individuals with SI as the dependent variable. Predictive performance of the training and validation sets was assessed via receiver operating characteristic (ROC) curves, calibration plots, and decision curve analysis.
ResultsIn total, 5308 middle-aged and older adults with SI were included, with 50.1% (n = 2657) developing depression. Multifactorial logistic regression analysis identified several depression predictors, including sex, education level, place of residence, marital status, self-rated health, life satisfaction, pension insurance status, nighttime sleep duration, functional impairment status, and pain (all P CI = 0.783–0.811) and 0.778 (95% CI = 0.755–0.800), respectively. The Hosmer–Lemeshow values were P = 0.176 and P = 0.606 (P > 0.05), and the calibration curves revealed significant agreement between the model and actual observations. ROC and DCA curves indicated good predictive performance for the column‒line graph.
ConclusionThis study presents a reliable, validated, and acceptable predictive model for depression risk in middle-aged and elderly individuals with SI, and the identified predictors have potential applications in public health policy and clinical practice.
The functional cure of chronic hepatitis B (CHB) is an ideal goal of therapy, as it is associated with improved long-term outcomes. Patients with low levels of HBsAg have higher rates of functional cure by pegylated interferon α (PEG-IFNα) therapy, and similar results have been observed in patients treated with PD-1 antibody. However, the combination therapy of PD-1 antibody and PEG-IFNα for promoting functional cure has not been studied. This study protocol aims to evaluate the efficacy and safety of a novel combined strategy, PD-1 antibody combined with PEG-IFNα therapy, in nucleos(t)ide analogues (NAs)-treated CHB patients.
This is a prospective, multicentre, open-label, randomised controlled study. Virologically suppressed CHB patients by NAs therapy will be recruited and randomised into PEG-IFNα group, PD-1 antibody group or PD-1 antibody combined PEG-IFNα group. PD-1 antibody will be injected intravenously once per 3 weeks for 24 weeks, and PEG-IFNα will be injected subcutaneously once a week for 48 weeks. The primary outcomes are the rate of HBsAg loss at 24 weeks. For safety analysis, adverse events in different groups will be compared.
This study has been approved by the Ethics Committee of the Fifth Medical Center of the Chinese PLA General Hospital (KY-2023-12-86-3). All results of the study will be submitted to a peer-reviewed journal.
Acute decompensated heart failure (ADHF), characterised by rapid deterioration of cardiac function, imposes substantial clinical and economic burdens due to high mortality (10%), frequent rehospitalisations (30% within 3 months) and impaired health-related quality of life. While exercise-based cardiac rehabilitation (ExCR) is a guideline-recommended intervention for stable heart failure, its utilisation remains critically low (11%) in ADHF populations, particularly during the vulnerable period spanning 90 days post-discharge—a high-risk phase marked by elevated mortality and morbidity. Current evidence gaps persist regarding optimal ExCR timing, dosage and efficacy during this critical window. This randomised controlled trial investigates the feasibility and impact of early ExCR initiation in the ADHF vulnerable period, evaluating outcomes in physical capacity, cardiac function and quality of life to inform evidence-based exercise protocols for this high-risk population.
This prospective, non-inferiority, randomised controlled trial will recruit 88 patients with ADHF. Participants will be randomised 1:1 to a 12-week personalised ExCR group or a traditional health education-based CR control group. Assessments will occur at baseline and 1, 2 and 3 months. The primary outcome is the change in 6 min walk distance post-intervention. Secondary outcomes include changes in grip strength, New York Heart Association Classification(NYHA class), brain natriuretic peptide, left ventricular ejection fraction, hospital stay, Short Physical Performance Battery score, Activities of Daily Living, Minnesota Living with Heart Failure Questionnaire score, and frailty status. Safety measures include all-cause readmission and mortality within 3 months post-discharge, as well as adverse events during the trial.
The study protocol was approved by the Peking University First Hospital Ethics Committee (Approval No. 2024yan180-002) in accordance with the Declaration of Helsinki. All participants will provide written informed consent prior to enrolment. The findings will be disseminated via peer-reviewed publications and conference presentations.
This study protocol was registered at ClinicalTrials.gov (Identifier: NCT06795737,
by Mengqi Yuan, Yajing Yuan, Xiangqun Zhang, Zhenghao Zhu, Chenxi Zhao, Xiangqian Gao, Genyuan Du
Millimeter-wave (mmWave) radar has become an important research direction in the field of object detection because of its characteristics of all-time, low cost, strong privacy and not affected by harsh weather conditions. Therefore, the research on millimeter wave radar object detection is of great practical significance for applications in the field of intelligent security and transportation. However, in the multi-target detection scene, millimeter wave radar still faces some problems, such as unable to effectively distinguish multiple objects and poor performance of detection algorithm. Focusing on the above problems, a new target detection and classification framework of S2DB-mmWave YOLOv8n, based on deep learning, is proposed to realize more accuracy. There are three main improvements. First, a novel backbone network was designed by incorporating new convolutional layers and the Simplified Spatial Pyramid Pooling - Fast (SimSPPF) module to strengthen feature extraction. Second, a dynamic up-sampling technique was introduced to improve the model’s ability to recover fine details. Finally, a bidirectional feature pyramid network (BiFPN) was integrated to optimize feature fusion, leveraging a bidirectional information transfer mechanism and an adaptive feature selection strategy. A publicly available 5-class object mmWave radar heatmap dataset, including 2,500 annotated images, were selected for data modeling and method evaluation. The results show that the mean average precision (mAP), precision and recall of the S2DB-mmWave YOLOv8n model were 93.1% mAP@0.5, 55.8% mAP@0.5:0.95, 89.4% and 90.6%, respectively, which is 3.3, 1.6, 4.5 and 7.7 percentage points higher than the baseline YOLOv8n network without increasing the parameter count.Stroke causes neurological deficits and respiratory dysfunction, with prolonged bed rest exacerbating secondary pulmonary injury. This study evaluated the efficacy of pressure biofeedback training combined with Liuzijue Qigong (LQG) in improving functional outcomes and respiratory function in patients with tracheostomised stroke.
This will be a parallel, single-centre randomised controlled trial involving 66 patients. Eligible patients will be randomly allocated to receive pressure biofeedback therapy combined with LQG training or simple pressure biofeedback training only. The primary outcomes will be the Chelsea Critical Care Physical Assessment Tool score and the findings of diaphragm ultrasound imaging. The secondary outcomes will include the National Institutes of Health Stroke Scale score, pulmonary function test score, maximum phonation time, SpO2 and arterial blood gas results. Outcome analyses will be conducted on both intention-to-treat and per-protocol populations. A preliminary analysis will test whether pressure biofeedback therapy combined with LQG training leads to statistically better outcomes. This trial will provide evidence of the effectiveness of pressure biofeedback training combined with LQG training on respiratory function in patients with stroke after tracheal occlusion.
This study protocol was approved by the Research Ethics Committee of the Shanghai Yangzhi Rehabilitation Centre (reference number: Yangzhi2024-137). All study participants will be required to provide written informed consent. The findings of this study will be submitted to a peer-reviewed journal for publication and presented at scientific conferences.
ChiCTR2500097509.
Physiological, psychological, and social changes may make older adults more vulnerable to stressors and lead to adverse health outcomes. It remains unclear whether interventions targeting coping strategies in older adults are effective.
This study aimed to systematically review and summarize existing interventions aimed at improving coping strategies in older adults and analyze intervention effectiveness.
A systematic search was conducted using PubMed, EMBASE, Web of Science, Cochrane, CINAHL, PsycINFO, CNKI, SinoMed, VIP, and WanFang databases for randomized controlled trials (RCTs) and quasi-experimental studies. Two researchers independently performed literature screening, quality assessment, and data extraction.
A total of 9 studies were included, comprising 7 RCTs and 2 quasi-experimental studies. Meta-analysis revealed that the interventions significantly enhanced the use of problem-focused coping strategies among older adults (SMD = 0.37, 95% CI: 0.12 ~ 0.63, p = 0.005, I 2 = 39%). However, there was no significant effect on emotion-focused coping strategies (SMD = −0.07, 95% CI [−0.62, 0.48], p = 0.80, I 2 = 76%). Moreover, no significant statistical differences were observed between the intervention group and the control group in terms of positive (SMD = 1.49, 95% CI [−0.23, 3.21], p = 0.09, I 2 = 98%) or negative coping strategies (SMD = −0.76, 95% CI [−1.79, 0.28], p = 0.15, I 2 = 96%).
Interventions targeting coping strategies can significantly improve the problem-focused coping strategies of older adults. It is crucial to help older adults accurately recognize daily stressors, acquire emotional regulation strategies, and enhance coping skills. More large-scale RCTs are needed to draw more robust conclusions.
by Chenyu Zheng, Ming Fang, Yue Zhang, Xinyu Liu, Zhihuan Huang
Exposure to natural landscapes has been shown to affect both physiological and psychological well-being, with the extent of these effects varying across different landscape types. However, the underlying mechanisms remain poorly understood. The association among stress reduction, environments characteristics and individual differences requires further investigation, particularly considering the complexity of landscape attributes and the variability of personal responses. In this study, 98 university students participated in a survey to evaluate the effects of different landscape types on visual preference and fatigue recovery. Physiological data (blood pressure, heart rate), psychological data (Perceived Restorative Scale), and visual preferences were analyzed before and after participants viewed the images of eight representative landscape space types: mountain, field, waterscape, lawn, desert, forest, artificial nature, plant. The results indicated that landscape type significantly influenced both physiological responses and emotional states, as well as participants’ perceived recovery from stress. Among the eight landscape spaces, water features and forests were reported to be the most restorative. Compared to freshmen, juniors exhibited greater improvements in physical and psychological recovery, alongside more positive evaluations of the environments. Notably, the desert landscape elicited varied responses depending on participants’ grade level and gender, suggesting that restoration effects may be modulated by individual characteristics. This may reflect an evolutionary predisposition to prefer natural features that enhance survival. These findings contribute to environmental psychology and provide valuable insights for educational practice and environmental design.by Yiming Jin, Rong Lu, Mingyuan Wang, Zihao Xu, Zhen Liu, Shuhong Xie, Yu Zhang
ObjectiveIn this study, we aimed to analyze the blood screening detection strategies employed for voluntary blood donation in a specific region of East China and evaluate the efficacy of the blood safety detection system.
Donors and MethodsA total of 539,117 whole blood samples were collected from voluntary blood donors between January 2018 and July 2021, as well as in 2023 and 2024. The samples were screened for hepatitis B surface antigen (HBsAg), hepatitis C virus (HCV) antibodies, human immunodeficiency virus antibodies/antigen (HIV Ab/Ag), and Treponema pallidum (TP) antibodies using enzyme-linked immunosorbent assay (ELISA). Alanine aminotransferase (ALT) levels were measured using a rapid method. Chemiluminescence immunoassay technology was used to detect five hepatitis B virus (HBV) markers. Polymerase chain reaction was employed to detect HBV DNA, HCV RNA, and HIV RNA. The reactivity rates of each marker were analyzed.
ResultsThe overall positivity rate for blood testing among donors in this region was 0.76% (4,078/539,117). The positivity rates for the individual markers were as follows: anti-TP (0.20%)> HBsAg (0.18%)> ALT (0.13%)> anti-HCV (0.085%)> nucleic acid testing (0.080%)> HIV antigen/anti-HIV (0.079%). No significant differences were observed (P > 0.05). Before 2023, the positivity rates for ALT and HBsAg exhibited occasional fluctuations, followed by a significant decline. Conversely, in 2024, a slight upward trend in the HIV positivity rate was noted.
ConclusionThe current multitiered blood screening and detection strategy in this region exhibits complementary advantages, ensuring effective blood safety. However, the observed slight upward trend in the HIV positivity rate among voluntary blood donors highlights the necessity for enhanced pre-donation counseling and risk assessment for key populations.
by Ruibo Sha, Zhifeng Zhang, Xiao Cui, Qingzheng Mu
Sewer pipeline defect detection is a critical task for ensuring the normal operation of urban infrastructure. However, the sewer environment often presents challenges such as multi-scale defects, complex backgrounds, lighting changes, and diverse defect morphologies. To address these issues, this paper proposes a lightweight cross-scale feature fusion model based on YOLOv8. First, the C2f module in the backbone network is replaced with the C2f-FAM module to enhance multi-scale feature extraction capabilities. Second, the HS-BiFPN module is adopted to replace the original structure, leveraging cross-layer semantic fusion and feature re-weighting mechanisms to improve the model’s ability to distinguish complex backgrounds and diverse defect morphologies. Finally, DySample is introduced to replace traditional sampling operations, enhancing the model’s ability to capture details in complex environments. This study uses the Sewer-ML dataset to train and evaluate the model, selecting 1,158 images containing six types of typical defects (CK, PL, SG, SL, TL, ZW), and expanding the dataset to 1,952 images through data augmentation. Experimental results show that compared to the YOLOv8n model, the improved model achieves a 3.8% increase in mAP, while reducing the number of parameters by 35%, floating-point operations by 21%, and model size by 33%. By improving detection accuracy while achieving model lightweighting, the model demonstrates potential for application in pipeline defect detection.
FreshRSS 