Quality Function Research Articles

Fast unfolding of communities in large networks: 15 years later

Abstract The Louvain method was proposed 15 years ago as a heuristic method for the fast detection of communities in large networks. During this period, it has emerged as one of the most popular methods for community detection: the task of partitioning vertices of a network into dense groups, usually called communities or clusters. Here, after a short introduction to the method, we give an overview of the different generalizations, modifications and improvements that have been proposed in the literature, and also survey the quality functions, beyond modularity, for which it has been implemented. Finally, we conclude with a discussion on the limitations of the method and perspectives for future research.

An improved interval‐grey‐probability QFD method for prioritizing engineering characteristics under vague environment

AbstractAt present, the interval‐grey quality function deployment (QFD) has been widely used to address a vague information at the early stage of product design. However, the existing interval‐grey QFD method suffers from a problem that it is incapable of comparing specific values from any two intervals within overlapping segments associated with the importance of engineering characteristics (ECs) during the process of prioritizing their importance. This problem consequently impedes the effective prioritization of their magnitudes, thus hindering the prioritization of the importance of ECs. Aiming at addressing the problem, an improved interval‐grey‐probability QFD method is proposed. The proposed method integrates interval grey numbers, grey relational analysis (GRA), and interval‐probability ranking method into the interval‐grey QFD framework to prioritize the importance of ECs under a vague environment. Specifically, the interval grey numbers are used to assess the importance of customer requirements (CRs) and the GRA method is adopted to construct the relationship matrix of CRs‐ECs, respectively. Based on the importance of CRs and the relationship matrix of CRs‐ECs, the interval‐probability ranking method is introduced to measure the prioritization of the importance of ECs. The proposed method is validated by a multi‐function flash drive. Results show that the proposed method is more accurate than existing methods in terms of the deviation degree.

A Decision Support Framework for Resilient and Sustainable Service Design

AbstractResilient and sustainable service design is essential for ensuring the longevity and effectiveness of service systems. However, existing literature often neglects key aspects such as articulating resilience attributes and integrating sustainability dimensions. This study proposes a decision support model for a “resilient-sustainable service design” that merges service design principles with resilient system attributes and organizational sustainability goals. The framework incorporates a multi-objective mathematical programming model and a multi-phased Quality Function Deployment (QFD) approach to derive Pareto optimal solutions using the Brute Force algorithm. Applied in the m-health service sector in Bangladesh, the study reveals significant challenges, including limited awareness of services and logistical inefficiencies. To address these issues, flexible strategies such as demand planning and service innovation are implemented. The findings have direct implications for the improvement of service delivery processes and underscore the importance of considering both resilience and sustainability. While focusing on Bangladesh’s m-health sector, the insights gained have broader relevance globally. The integration of resilience and sustainability principles into service design is crucial for addressing complex challenges across sectors and regions. Future research could involve longitudinal studies to capture evolving resilience strategies and explore resilient-sustainable service systems from a broader perspective. This entails examining various factors such as technological advancements and socio-economic dynamics shaping resilient and sustainable service ecosystems.

Machine learning-based lean service quality improvement by reducing waiting time in the healthcare sector

PurposeThe study presented healthcare service quality, lean thinking and Six Sigma to enhance patient satisfaction. Moreover, the notion of machine learning is combined with lean service quality to bring about the fundamental benefits of predicting patient waiting time and non-value-added activities to enhance patient satisfaction.Design/methodology/approachThe study applied the define, measure, analyze, improve and control (DMAIC) method. In the define phase, patient expectation and perception were collected to measure service quality gaps, whereas in the measure phase, quality function deployment (QFD) was employed to measure the high-weighted score from the patient's voice. The root causes of the high weighted score were identified using a cause-and-effect diagram in the analysis phase.FindingsThe study employed a random forest, neural network and support vector machine to predict the healthcare patient waiting time to enhance patient satisfaction. Performance comparison metrics such as root-mean-square error (RMSE), mean absolute error (MAE) and R2 were accessed to identify the predictive model accuracy. From the three models, the prediction performance accuracy of the support vector machine model is better than that of the neural network and random forest models to predict the actual data.Practical implicationsLean service quality improvement using DMAIC, QFD and machine learning techniques can be generalized to predict patient waiting times. This study provides better realistic insights into patient expectations by announcing waiting times to enable data-driven service quality deliveries.Originality/valuePrior studies lack lean service quality, Six Sigma and waiting time prediction to reduce healthcare waste. This study proposes lean service quality improvement through lean Six Sigma (LSS), i.e. DMAIC and machine learning techniques, along with QFD and cause-and-effect diagram.

Effects of Different Additives on the Chemical Composition, Fermentation Quality, Bacterial Community and Gene Function Prediction of Caragana korshinskii Kom. Silage

The aim of this study was to investigate the effects of Lentilactobacillus plantarum (LP), cellulase (CE), and xylanase (XE) supplementation on the fermentation quality, chemical composition, and bacterial community of Caragana korshinskii Kom. silage. Four groups were designed for the study. No additives were used in the control group (CK), and LP (1 × 106 cfu/g), CE (1 × 104 IU/g) and XE (2 × 105 IU/g) were added to the experimental groups on a fresh matter basis, with three replicates per group. To promote fermentation, 5% molasses was added to all of the groups. On days 15 and 60, fermentation quality, chemical composition and the bacterial community were analysed. The pH of groups CE and XE was lower than that of the CK group at 60 days. During ensiling, the lactic acid (LA) content in the experimental groups and the acetic acid (AA) content in the CK and LP groups increased. At 60 days, the dominant genera in the CK and LP groups was Weissella and the dominant genera in the CE and XE groups was Lentilactobacillus. At different times during silage, nucleotide metabolism was enhanced, whereas the metabolism of carbohydrate, amino acids, energy, cofactors and vitamins was inhibited in the LP group. However, the metabolism of amino acids, energy, cofactors and vitamins in the CE and XE groups was increased, whereas the metabolism of nucleotides was inhibited. In conclusion, LP, CE and XE could exert a positive effect on the fermentation quality of C. korshinskii Kom. silage by shifting the bacterial community composition.

Application of a posterior anatomical integrated locking compression plate in the treatment of posterior wall acetabular fractures

BackgroundTraditional fixation methods for posterior wall acetabular fractures (PWAFs) typically require the utilization of multiple plates and intraoperative plate contouring, which are technically demanding and carry the risk of intra-articular screw penetration. A novel posterior anatomical integrated locking compression plate (PAILCP) has been designed to optimize these shortcomings. This study aims to evaluate the feasibility and effectiveness of the PAILCP fixation method for the surgical management of PWAFs.MethodsA total of 48 patients with PWAFs who were treated surgically in our department between January 2018 and December 2022 were selected for retrospective analysis. The 48 patients were classified into groups A (PAILCP fixation, n = 25) and B (traditional fixation, n = 23) according to different fixation methods. Fracture reduction quality, number of utilized plates, blood loss, surgical time, instrumentation time, hip function, and complications were compared between the two groups.ResultsA total of 25 PAILCPs were used in group A, while 34 mini-T plates and 29 reconstruction plates were employed in group B. Compared to the patients in group B, those in group A had significantly shorter instrumentation time (− 16 min) and surgical time (− 23 min) as well as lower blood loss (− 123 ml). However, no significant differences were observed in fracture reduction quality and hip function between the two groups. Additionally, the complication rate was slightly lower in group A (3/25 patients) than in group B (6/23); however, this difference was not statistically significant. Finally, follow-up examination revealed no main plate breakage, miniplate displacement, screw loosening, or intra-articular screw penetration in all patients.ConclusionThe surgical treatment of PWAFs using the PAILCP fixation method results in shorter instrumentation and surgical time and lower blood loss than the traditional fixation method. Thus, the PAILCP fixation method is a promising alternative for PWAFs management, offering enhanced surgical ease and safety.

Research Progress on the Quality, Extraction Technology, Food Application, and Physiological Function of Rice Bran Oil.

Rice bran oil is recommended by the World Health Organization as one of the three major healthy edible oils (along with corn and sesame oils), owing to its unique fatty acid composition and functional components. This study screened, organized, and analyzed a large number of studies retrieved through keyword searches, and investigated the nutritional value and safety of rice bran oil. It reviews the stability of raw rice bran materials and the extraction and refining process of rice bran oil and discusses food applications and sub-health regulations. Research has found that a delayed stabilization treatment of rice bran seriously affects the overall quality of rice bran oil. Compared with traditional solvent extraction, the new extraction technologies have improved the yield and nutritional value of rice bran oil, but most of them are still in the research stage. Owing to the lack of economical and applicable supporting production equipment, extraction is difficult to industrialize, which is a challenging research area for the future. Rice bran oil has stronger antioxidant stability than other edible oils and is more beneficial to human health; however, its application scope and consumption are limited owing to the product price and lack of understanding. Rice bran oil has significant antioxidant, anti-inflammatory, anti-cancer, hypoglycemic, lipid-lowering, and neuroprotective effects. Further exploratory research on other unknown functions is required to lay a scientific basis for the application and development of rice bran oil.

ECOBRICK SOFA DESIGN IS ENVIRONMENTALLY FRIENDLY USING THE HOUSE OF QUALITY METHOD AND THE BOSTON CONSULTING GROUP (BCG) METHOD

Plastic is one of the longest decomposing types of waste with a decomposition time of up to 10 centuries. Plastic waste that is difficult to decompose can be minimized by using ecobrick techniques. This ecobrick technique aims to turn plastic waste that was initially worthless (zero value) into a product that has added value. This study uses four methods, namely the House of Quality (HOQ), Quality Function Deployment (QFD), Slovin, and Boston Consulting Group (BCG) methods. These methods are used to determine product planning and development, consumer desires, product position in market share, and systematic evaluation of its ability to produce products to satisfy consumers. This study involved 100 respondents obtained from the slovin method. Where the respondents are positioned as research subjects. The respondent data was obtained from distributing questionnaires through google forms. The data collected is calculated and analyzed for unique and minimalist sofa House of Quality (HOQ). The results of this study inform that customer feedback on the product or Voice of Customer can affect quality control and improvement by using the statistical method or Statistical Quality Control. Furthermore, unique and minimalist sofa companies each have different product development focuses. Following up on the findings in this study, the company can adjust the needs and desires of these consumers to the design and service standards as well as the obstacles that may occur.

Enhancing the accreditation of Indonesian private universities through the integration of EduQual and accreditation standards of the BAN-PT

Higher education institutions in Indonesia are currently facing significant challenges in maintaining public trust, requiring them to uphold autonomy, transparency, accountability, and continuously meet standards for quality assurance and improvement. This research aims to identify and address the unmet quality aspects in education to elevate the accreditation of private universities from C/Good to B/Very Good or even A/Excellent. By integrating the EduQual model with certification requirements from the Board of National Accreditation for Higher Education (Badan Akreditasi Nasional Perguruan Tinggi, BAN-PT), the research is supported by comprehensive studies of university accreditation reports, questionnaires, focus group discussions (FGD), and expert judgment through interviews and consultations. The data analysis employs gap analysis, importance-performance analysis, and quality function deployment. The study identified twenty-one priority improvement points to enhance accreditation, with six key improvements prioritized from the ninety indicators examined based on customer needs analysis. In the accreditation of private universities, the unmet aspects of education quality lie in the dimension of physical facilities, particularly human resources, as well as in the dimension of personal development, especially in the criteria for research and community service. The study recommends prioritizing investments in human resource development and strengthening research and community service initiatives, as these are critical areas where private universities fall short in meeting accreditation standards and fulfilling educational quality expectations.

Father–Child Relationship Quality and Social Functioning Among Children at Risk for Child Maltreatment

AbstractDespite the considerable growth and advancement in fatherhood research, relatively little is known about the effects of father–child relationship quality on social functioning among children who experience child maltreatment. Applying the strengths-based perspective, the current study sought to examine the association between father–child relationship quality and social functioning (social competence and positive peer relationships) among at-risk children, and to determine whether these associations are moderated by perpetrator type. This study included a sample of 681 US children (age 12 years) drawn from the Longitudinal Studies of Child Abuse and Neglect. We conducted a series of ordinary least squares multiple regression analyses. Higher-quality father–child relationships were associated with higher levels of social competence (B = 0.19, SE = 0.06, p = .002) and positive peer relationships (B = 0.05, SE = 0.02, p = .005). Significant interaction effects were found. The positive association between father–child relationships and peer relationships was significantly stronger among children with a history of maltreatment perpetrated by fathers with or without mothers (B = 0.16, SE = 0.05, p = .002). Findings highlight the importance of positive father–child relationships in building social resilience among children who experience maltreatment. Practitioners working with youth who are at risk for maltreatment should consider engaging fathers in services to support the development of strong father–child relationships.

Brian effects of electroacupuncture on sleep quality and cognitive function in patients with insomnia related to cerebral infarction

To observe the effects of electroacupuncture (EA) on sleep quality, sleep structure, and cognitive function in patients with insomnia related to cerebral infarction, and to explore the brain effect mechanism of EA on insomnia related to cerebral infarction. Thirty-six patients with insomnia related to cerebral infarction were randomly divided into an EA group (18 cases, 1 case was eliminated and 1 case dropped out) and a sham acupuncture group (18 cases, 1 case was eliminated and 2 cases dropped out). Both groups received conventional treatment for cerebral infarction. The EA group received EA at Sishencong (EX-HN 1) with continuous waves at a frequency of 2 Hz, at an intensity tolerable to the patient. The sham acupuncture group received sham acupuncture at non-acupoints with the same EA parameters but electrical stimulation was interrupted after 30 s. Both groups were treated for 20 min each session, once daily, 5 days per week, for a total of 4 weeks. Pittsburgh sleep quality index (PSQI), Montreal cognitive assessment-basic (MoCA-B) scores, and short-term memory (STM) encoding test accuracy and average reaction time were observed before and after treatment in the two groups. Polysomnography (PSG) was used to evaluate sleep structure, and electroencephalogram (EEG) data were collected to observe the standardized power value of the Theta frequency band before and after treatment. Compared with before treatment, PSQI score was decreased and MoCA-B score was increased in the EA group after treatment (P<0.001); the EA group had lower PSQI score and higher MoCA-B score than those in the sham acupuncture group (P<0.001, P<0.01). Compared with before treatment, STM encoding test accuracy was increased and average reaction time was shortened in the EA group after treatment (P<0.01, P<0.001); sleep efficiency (SE) was increased (P<0.01), total sleep time (TST), REM, and N3 stages were prolonged (P<0.01, P<0.05), and sleep latency (SL) was shortened (P<0.01). The standardized power value of the Theta frequency band in EEG channels F3, C3, C4, O1 and O2 was decreased (P<0.05). After treatment, the EA group had higher STM encoding test accuracy, shorter average reaction time (P<0.05), higher SE (P<0.01), longer TST, REM and N3 stages (P<0.01), and shorter SL (P<0.01) than those in the sham acupuncture group. There was no statistically significant difference in the standardized power value of the Theta frequency band between the two groups (P>0.05). EA could regulate sleep quality and structure in patients with insomnia related to cerebral infarction, and improve cognitive function, possibly related to the reduction of slow-wave activity in EEG.

Investigating the effects of indoor lighting on measures of brain health in older adults: protocol for a cross-over randomized controlled trial

BackgroundThe worldwide number of adults aged 60 years and older is expected to double from 1 billion in 2019 to 2.1 billion by 2050. As the population lives longer, the rising incidence of chronic diseases, cognitive disorders, and behavioral health issues threaten older adults’ health span. Exercising, getting sufficient sleep, and staying mentally and socially active can improve quality of life, increase independence, and potentially lower the risk for Alzheimer’s disease or other dementias. Nonpharmacological approaches might help promote such behaviors. Indoor lighting may impact sleep quality, physical activity, and cognitive function. Dynamically changing indoor lighting brightness and color throughout the day has positive effects on sleep, cognitive function, and physical activity of its occupants. The aim of this study is to investigate how different indoor lighting conditions affect such health measures to promote healthier aging.MethodsThis protocol is a randomized, cross-over, single-site trial followed by an exploratory third intervention. Up to 70 older adults in independent living residences at a senior living facility will be recruited. During this 16-week study, participants will experience three lighting conditions. Two cohorts will first experience a static and a dynamic lighting condition in a cluster-randomized cross-over design. The static condition lighting will have fixed brightness and color to match lighting typically provided in the facility. For the dynamic condition, brightness and color will change throughout the day with increased brightness in the morning. After the cross-over, both cohorts will experience another dynamic lighting condition with increased morning brightness to determine if there is a saturation effect between light exposure and health-related measures. Light intake, sleep quality, and physical activity will be measured using wearable devices. Sleep, cognitive function, mood, and social engagement will be assessed using surveys and cognitive assessments.DiscussionWe hypothesize participants will have better sleep quality and greater physical activity during the dynamic lighting compared to the static lighting condition. Additionally, we hypothesize there is a maximal threshold at which health-outcomes improve based on light exposure. Study findings may identify optimal indoor lighting solutions to promote healthy aging for older adults.Trial registrationClinicalTrials.gov Identifier: NCT05978934.

Evaluation of Supplier Sustainable Development Programs Using the HFLTS-QFD Method

Objective: This study proposes a decision model for evaluating sustainable supplier development programs (SSDPs) using the HFLTS-QFD technique, which is a combination of Hesitant Fuzzy Linguistic Term Sets (HFLTS) with the Quality Function Deployment (QFD) method. Theoretical Framework: The implementation of supplier development programs is important to improve supplier performance in aspects related to economic, environmental and social aspects. The evaluation of these programs is necessary to decide on their continuation or discontinuation, as well as to direct the allocation of resources. Method: The bibliographical research supported the definition of the requirements and criteria used for the evaluation of SDPs. The implementation of the model was done using MS Excel® software. The application in an illustrative case involving the evaluation of five SDPs allowed us to demonstrate the applicability of the model. Results and Discussion: The most relevant criteria were organization strategy, social responsibility, employee training and environmental management. The programs with the best classification were SDP4 and SDP5. Research Implications: The proposed model supports the selection of criteria considering their relative weights and the degree of difficulty in collecting data from suppliers when evaluating each PDFS. It also has the capacity to assist group decision-making, enabling the assignment of weights to decision-makers. Originality/Value: Unlike previous models for evaluating PDFS, which use economic or environmental criteria, the proposed model considers criteria related to the three dimensions of the Triple Bottom Line, in addition to allowing the use of linguistic expressions to deal with decisions under hesitation and uncertainty.

Burning fields, fading memories: exploring the effects of sugarcane burning on air quality and cognitive functioning – A case study in Northeast Thailand

This study assessed the relationship between PM2.5 concentration and the working memory of sugarcane farmers (n = 444) in Khon Kaen Province, one of the largest sugarcane producers in the Northeast region of Thailand. The relationship between the ambient PM2.5 concentrations and the working memory of sugarcane farmers was evaluated using two working memory outcomes. These outcomes included a working memory difficulty score derived from self-report of difficulty in daily tasks that require working memory and an objective memory test score consisting of a set of number recall exercises. The PM2.5 concentration data in this study were obtained from air quality monitoring stations located in the vicinity of the study locations, ensuring both precision and relevance to local air conditions. The regression results showed that farmers in the low-burn farming zone had less difficulty with working memory and better performance on number recall exercises, compared to farmers in the high-burn farming zones, even after controlling for health and socio-economic factors. Our findings highlight the potential impacts of PM2.5 exposure on the cognitive functions of farmers who burn sugarcane residues in Thailand. Our study supports the need for the government of Thailand or health agencies to establish an effective policy to reduce sugarcane residue burning in Thailand.

A new approach for optimal design of intensive care unit

Planning and budgeting for healthcare facilities necessitate precise estimation and a thoughtful analysis of the required area for each department, as well as extensive knowledge of the most important elements that can influence the design and provide an appropriate environment for staff and patients. A gross conversion factor is influential in calculating the entire area of a department. However, there is no precise standard indicating how this factor should be calculated. To address this problem, quality function deployment (QFD) has been implemented. The intensive care unit (ICU) is one of the highly equipped departments that should be properly planned; therefore, it was selected for application. The five steps of the QFD are used to identify and rank the most important and efficient design features. Only the top factors are considered in calculating the required area for the ICU department. This approach presents a unique method for estimating the gross square area based on calculating the gross conversion factor. To demonstrate the proposed approach’s efficacy, it was applied to two Egyptian public hospitals. The results reveal that 15–16% of the total space of both hospitals can be reduced from the total department space. Moreover, an outstanding reduction in ICU design and preparation expenses has been achieved. The design reduces the required budget for a project while maintaining the same construction material quality and accommodating extra beds. Additionally, the QFD proves its ability to redesign the ICU department while reducing costs.

Pulmonary Arterial Hypertension Affects Sperm Quality and Epididymis Function in Sedentary and Exercised Wistar Rats.

Pulmonary arterial hypertension (PAH) is a disease that affects millions of people worldwide. Besides the effects on the lungs and heart, PAH can affect other organs, including the liver, kidneys, brain, glands, and testis. This study aimed to evaluate the impact of PAH and physical resistance training (RT), a complementary treatment for hypertension, on epididymis morphology and function and sperm parameters. Wistar rats were divided into four experimental groups (n = 8/ group): sedentary control, sedentary PAH, RT control, and RT + PAH. PAH was induced using monocrotaline injections on Day 1 and 7 of the experiment. Sixteen rats from RT groups underwent RT training for 30days, while rats from sedentary groups did not exercise. The epididymis was processed and analyzed using microscopic, biochemical, and functional approaches. Sperm were harvested from the cauda epididymis and evaluated for morphology and motility. Our results showed that PAH compromised the epididymis antioxidant defense system and reduced NO levels, leading to an imbalance in the organ's mineral content. These alterations affected the epididymis morphology and reduced the sperm transit time in the proximal epididymis, resulting in an increase in abnormal sperm morphology in the cauda region. Unfortunately, RT was not a good therapy against the PAH effect on the epididymis. PAH negatively affected epididymis functions with consequences to male gametes. Dysfunctions in the post-testicular environment may lead to male infertility due to the disturbance of spermatozoa fecundity.

Restriction of Mobile Phone Usage at Bed Time: Effect on Sleep Quality, Mood and Cognitive Function

Introduction: Mobile phones are integral to modern life, but excessive use, particularly at night, can lead to disrupt well-being. Limiting mobile phone use before bedtime may improve individual well-being. This study aimed to evaluate whether restricting mobile phone use at bedtime enhances sleep quality, mood, and cognitive function. Methodology: Undergraduate students from a selected engineering college were assessed for bedtime mobile phone use. Sixty-eight students were chosen via simple random sampling. A self-reported questionnaire including the Pittsburgh Sleep Quality Index, Positive and Negative Affect Scale, and Montreal Cognitive Assessment Scale evaluated sleep quality, mood, and cognitive function before implementing restrictions. The "Lock My Phone" app was used to enforce these restrictions. Post-intervention assessments were conducted on the 15th and 30th days. Results: Before the intervention, all students reported poor sleep quality, 80.8% had reduced positive affect, 91.1% experienced high negative affect, and only 23.5% had normal cognitive function. Significant improvements were observed in sleep quality, mood, and cognitive function post-restriction (p&lt;0.001). Conclusion: Restricting mobile phone use before bedtime significantly improved sleep quality, mood, and cognitive function among undergraduate students.

Effectiveness of a theory-underpinning exercise intervention among community-dwelling (pre)frail older adults: A stepped-wedge cluster-randomized trial

ObjectivesTo evaluate the effectiveness of a theory-underpinning exercise intervention among Chinese community-dwelling (pre)frail older adults, and the impacts of intervening late as opposed to intervening early. MethodsThis was a stepped-wedge cluster-randomized trial. Participants were enrolled from six communities in a county of central China from January to November in 2021 (n = 149). A 12-week exercise intervention based on the integration of Health Belief Model, Theory of Planned Behavior and Health Action Process Approach was implemented among 149 community-dwelling (pre)frail older adults during the study period. The primary outcomes were frailty and muscle mass, muscle strength and physical performance. Secondary outcomes included physical disability, fear of falling, cognitive function, depressive symptoms, social support and quality of life. Assessments were conducted at baseline and at 12, 24 and 36 weeks. A multilevel regression model was used for statistical analysis. ResultsThe positive effects were statistically significant on frailty (β = −1.166, p = 0.016), muscle mass (β = 1.499, p = 0.005), handgrip strength (β = 14.758, p < 0.001), physical performance (Short Physical Performance Battery, β = 6.043, p < 0.001), physical disability (Activities of Daily Living: β = 0.462, p = 0.043; Instrumental Activities of Daily Living: β = 0.693, p = 0.049;) and fear of falling (β = −1.490, p = 0.003), cognitive function (β = −0.466, p = 0.011), depressive symptoms (β = −0.541, p < 0.001), social support (β = 27.661, p < 0.001), physical (β = 2.413, p = 0.013) and mental (β = 7.837, p < 0.001) components of quality of life at 0-week postintervention, and most of them persisted at 12- and 24-week postintervention. The effectiveness significantly differed by the time of interventions on muscle mass (β = −1.217, p = 0.002), 5-time chair stand test (β = −1.172, p = 0.018), cognitive function (β = 0.600, p = 0.014) and mental component of quality of life (β = −12.679, p = 0.002). ConclusionThe theory-underpinning exercise intervention has positive immediate and persistent effects on frailty, frailty-related characteristics as well as physical, mental and social functioning among Chinese community-dwelling (pre)frail older adults. Late intervention attenuated the significant intervention effect. Trial registrationChinese Clinical Trial Registry ChiCTR2100041981.

Resolving the Intricate Effects of Multiple Global Change Drivers on Root Litter Decomposition.

Plant roots represent about a quarter of global plant biomass and constitute a primary source of soil organic carbon (C). Yet, considerable uncertainty persists regarding root litter decomposition and their responses to global change factors (GCFs). Much of this uncertainty stems from a limited understanding of the multifactorial effects of GCFs and it remains unclear how these effects are mediated by litter quality, soil conditions and microbial functionality. Using complementary field decomposition and laboratory incubation approaches, we assessed the relative controls of GCF-mediated changes in root litter traits and soil and microbial properties on fine-root decomposition under warming, nitrogen (N) enrichment, and precipitation alteration. We found that warming and N enrichment accelerated fine-root decomposition by over 10%, and their combination showed an additive effect, while precipitation reduction suppressed decomposition overall by 12%, with the suppressive effect being most significant under warming-alone and N enrichment-alone conditions. Significantly, changes in litter quality played a dominant role and accelerated fine-root decomposition by 15% ~ 18% under warming and N enrichment, while changes in soil and microbial properties were predominant and reduced decomposition by 7% ~ 10% under precipitation reduction and the combined warming and N enrichment. Examining only the decomposition environment or litter properties in isolation can distort global change effects on root decomposition, underestimating precipitation reduction impacts by 38% and overstating warming and N effects by up to 73%. These findings highlight that the net impact of GCFs on root litter decomposition hinges on the interplay between GCF-modulated root decomposability and decomposition environment, as well as on the synergistic or antagonistic relationships among GCFs themselves. Our study emphasizes that integrating the legacy effects of multiple GCFs on root traits, soil conditions and microbial functionality would improve our prediction of C and nutrient cycling under interactive global change scenarios.

Effects of different rapeseed varieties on egg production performance, egg quality, hormone levels, follicle development, and thyroid function in hens

This study was to evaluate the effects of rapeseed (Brassica napus L.) from China with different content of glucosinolate (Gls) and erucic acid (EA) on laying hens. A total of 600 laying hens at 33 wk of age were randomly divided into 5 treatments containing a control diet and 4 diets with 11.5% rapeseed. The 11.5% rapeseed diets varied in Gls and EA levels: 1) Deyou no. 6 (DY6) with Gls at 22.67 μmol/g and EA at 0.7%, 2) Mianbangyou no. 1 (MB1) with Gls at 43.23 μmol/g and EA at 3.5%, 3) Deyou no. 5 (DY5) with Gls at 74.66 μmol/g and EA at 16.20%, 4) Xiheyou no. 3 (XH3) with Gls at 132.83 μmol/g and EA at 44.60%. Each group had eight replicates and each replicate had 15 hens. The trial lasted for 12 wk with 4 wk withdrawal. From 1 to 8 wk of the trial, 11.5% rapeseed reduced average daily feed intake (ADFI) compared to the control group (P = 0.002), and egg-laying rate of XH3 rapeseed was lower than that of DY6 rapeseed (P = 0.006), and egg weight of MB1, DY5, and XH3 rapeseed were lower than that of the control group (P < 0.01). Egg mass was reduced by 11.5% rapeseed (P = 0.004) and egg mass of XH3 and DY5 rapeseed were lower than that of DY6 rapeseed (P < 0.01). Feed conversion ratio (FCR) of 11.5% rapeseed was higher than that the control group and FCR is higher in XH3 rapeseed than in DY6 rapeseed from 1 to 8 wk (P < 0.01). At wk 8, the lightness value of eggshell color of XH3 rapeseed was significantly lower than that of the control and DY5 rapeseed (P = 0.012). Xiheyou no. 3 rapeseed had a higher redness value of eggshell color than the control and MB1 and DY5 rapeseed (P = 0.008). Albumen height of DY5 rapeseed was lower than that of the control group at wk 8 (P = 0.012). Mianbangyou no. 1 and DY5 rapeseed decreased Haugh unit at wk 4 and 8, respectively (P = 0.011, P = 0.024). Serum E2 content was decreased by 11.5% rapeseed (P = 0.003). Thyroid index increased as the Gls and EA content increased (P = 0.008). The smallest hierarchical follicle numbers of XH3 and MB1 rapeseed were lower than that of the control group (P = 0.009). After 4 wk withdrawal, the egg weight, egg mass, and FCR did not recover (P = 0.011, P = 0.033, P = 0.024, respectively). In conclusion, 11.5% rapeseed decreased egg production performance which might be caused by decreasing hormone levels, and high Gls and EA rapeseed had a lower performance than low Gls and EA rapeseed.