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This study investigates the resilient modulus of vertical vibration compacted cement-stabilized macadam (CSM). The reliability of the vertical vibration compaction method (VVCM) for CSM was verified. Then the influences of four factors on the resilient modulus were studied and a resilient modulus prediction equation was proposed. Subsequently, the influences of aggregate type, cement dosage, and gradation on the initial and ultimate resilient moduli were studied. Results show that compared to the quasi-static-compaction method, the VVCM has a smaller influence on the optimum water content and aggregate gradation, and VVCM specimens have a higher correlation with the on-site cores. The increase of cement dosages and curing times can improve the resilient modulus and the proposed prediction equation can accurately predict the resilient modulus growth of the CSM. When the cement dosage and aggregate gradation are identical, the initial and ultimate resilient moduli of the cement-stabilized limestone are the largest, followed by the cement-stabilized granite and sandstone. The initial and ultimate resilient moduli of the CSM increase linearly as the cement dosage increases. Moreover, the skeleton-dense gradation helps to improve the initial and ultimate resilient moduli of the CSM. This study provides guidance for the design and construction of a CSM base. [ABSTRACT FROM AUTHOR]

Objectives: The aim of this study was to compare the degree of resilience and self-perceived physical and mental health in nurses before and during the COVID-19 pandemic., Background: Work-related stress among nurses is recognized as an antecedent of burnout, which in turn impacts resiliency and well-being. The work of nursing has long been noted as stressful. Although nurse resilience and perceived well-being have been shown to decrease during a period of usual stress (constant and chronic), the impact and significance of prolonged stress on nurse resilience and well-being illuminates throughout the literature., Methods: Replicating a cross-sectional prepandemic study, nurses were resurveyed in 2020 during the COVID-19 pandemic. In both studies, the Connor-Davidson Resilience Scale and PROMIS Global Health was used to measure respondent's: 1) resilience level; 2) physical health status; and 3) mental health status, respectively. Independent 2-sample t tests were performed to compare the pre-and-post score differences in the 3 outcomes. To identify characteristics that were associated with the pre-and-post differences, comparison analyses were also performed within each level of the respondents' characteristic variables., Results: A higher proportion of postsurvey respondents reported working more than 8 hours of overtime per week, had thoughts of quitting their current job, and thought their workload was too much compared with the presurvey respondents. Generally, the postgroup resilience scores and self-perceived physical and mental scores were statistically significantly lower compared with the pregroup scores, but those differences were only observed in certain subgroups defined by respondents' characteristics., Conclusions and Implications: Self-perceived physical and mental health are significantly associated with the degree of resilience and worsened during the COVID-19 pandemic, especially in younger and older nurse cohorts. Engaged nurse leaders are key to implement interventions that build resilience and perceived well-being during periods of usual and prolonged stress., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Student resiliency, success, and retention are top priorities for nursing programs., Purpose: The purpose of the cross-sectional descriptive study was to identify factors associated with the resiliency level and physical and mental health of nursing students., Methods: A cross-sectional descriptive study design was used with a convenience sample of 199 nursing students from organizations that comprise the Community Patient Safety Coalition Nursing Research Consortium. Resiliency was measured with the Connor Davidson Resiliency Scale. Physical and mental health was measured with the Patient Reported Outcomes Measurement Information System Global Health Short Form., Results: Most of the nursing students in the sample were female (92%), White (94%), and in BSN programs (74.4%). Students had low resiliency (P < .0001) and low physical and mental health (P < .0001) compared with the general population., Conclusions: Student resilience was positively correlated to self-perception of physical and mental health., Competing Interests: The authors declare no conflicts of interest., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

The aim of this study was to evaluate the impact of education via WeChat on the quality of bowel preparation in patients undergoing colonoscopy through a meta-analysis of randomized controlled trials. Randomized controlled trials of bowel preparation education provided via WeChat for patients undergoing colonoscopy were screened from databases such as PubMed, Web of Science, Cochrane Library, and Embase. Papers published from the date of database construction to May 1, 2021, were extracted, and a meta-analysis was performed using Review Manager software. A total of four randomized controlled trials were included in the meta-analysis. The results showed that for patients undergoing colonoscopy, education via WeChat significantly improves the quality of bowel preparation for colonoscopy, reduces the insertion time, and increases the adenoma detection rate and the patient's compliance and willingness to repeat bowel preparation. In conclusion, education via WeChat before colonoscopy can significantly improve the quality of bowel preparation., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)