Publications by authors named "Keyang Liu"

Objective: Many risk factors affect dementia and all-cause mortality. However, whether falls are a risk factor for dementia and all-cause mortality is unclear. The study examines the association of falls with the risk of dementia and all-cause mortality, and whether dementia mediates the association of falls with all-cause mortality.

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Mattress firmness is a critical factor influencing sleep quality. This study investigates the effects of time, mattress firmness, and anthropometric parameters on surface electromyographic (sEMG) activity during supine rest. Eleven participants were analyzed, and the values for lower back sEMG on three mattresses were measured as 8.

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We propose a timing jitter measurement scheme based on the temporal sampling method. This scheme offers a wide dynamic range and high measurement accuracy for measuring timing jitter between pulses, allowing for attosecond precision in measuring timing jitter of ultrashort pulses with short and long pulse duration. By utilizing a balanced measuring configuration, this scheme is naturally immune to the environmental and laser amplitude noises, and has been successfully used to measure timing jitter of two femtosecond pulses.

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Mortise and tenon joint is a key connecting component in timber-framed architecture. Accurately assessing the damage to joints is crucial for the structural design of wooden buildings. This study conducted fatigue tests at three stress levels (70%, 100%, and 130%) based on the maximum stress from static bending tests to analyze the impact of different stress levels on the fatigue performance of mortise and tenon joints.

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Article Synopsis
  • - The study examined how socioeconomic status (SES) affects cardiovascular health (CVH) differently for men and women, using data from over 31,000 participants in South Korea between 2007 and 2017.
  • - Four SES classes were identified, with lower SES linked to significantly lower chances of achieving ideal CVH, particularly for women (OR: 0.55) compared to men, where the results were less clear (OR: 0.83).
  • - The findings suggest that targeted interventions to address SES disparities and empower low-income groups, especially women, are essential for improving cardiovascular health outcomes.
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Background: This study aims to investigate the association and dose-response relationship between depression, dementia, and all-cause mortality based on a national cohort study of older adults in Japan.

Methods: We conducted a longitudinal study of 44,546 participants ≥65 years from 2010-2019 Japanese Gerontological Evaluation Study. The Geriatric Depression Scale-15 was used to assess depressive symptoms and the long-term care insurance was used to assess dementia.

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Objective: To investigate the association between the dietary intake of linoleic acid (LA) and alpha linolenic acid (ALA) with mortality outcomes in patients with diabetes.

Participants: 3,112 U.S.

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Introduction: The emergence of the COVID-19 pandemic has served as a call for enhanced global cooperation and a more robust pandemic preparedness and response framework. As a result of this pressing demand, dialogues were initiated to establish a pandemic treaty designed to foster a synchronized global strategy for addressing forthcoming health emergencies. In this review, we discussed the main obstacles to this treaty.

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Article Synopsis
  • A study was conducted on 50,374 Japanese adults (ages 40-79) to explore the relationship between physical activity and bladder cancer risk.
  • Over a median follow-up of 17.5 years, 153 cases of bladder cancer were recorded, with findings showing that increased recreational sports participation significantly reduced the risk of developing the disease, particularly among men.
  • The results suggest that both recreational and occupational physical activities are linked to a lower risk of bladder cancer, highlighting the importance of staying active.
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Water adsorption and dissociation processes on pristine low-index TiO interfaces are important but poorly understood outside the well-studied anatase (101) and rutile (110). To understand these, we construct three sets of machine learning potentials that are simultaneously applicable to various TiO surfaces, based on three density-functional-theory approximations. Here we show the water dissociation free energies on seven pristine TiO surfaces, and predict that anatase (100), anatase (110), rutile (001), and rutile (011) favor water dissociation, anatase (101) and rutile (100) have mostly molecular adsorption, while the simulations of rutile (110) sensitively depend on the slab thickness and molecular adsorption is preferred with thick slabs.

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Article Synopsis
  • A study was conducted on the prevalence and trends of polypharmacy among U.S. adults over 20 years, using data from 55,081 participants in a national health survey from 1999 to 2018. !* -
  • The findings showed an increase in adults using five or more medications, rising from 8.2% to 17.1%, with higher rates in the elderly, and those with heart disease or diabetes. !* -
  • The study highlights the importance of addressing polypharmacy issues, particularly in vulnerable populations, to improve healthcare management and reduce costs. !*
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Objectives: between android fat mass and gynoid fat mass with the mortality prediction is still limited. Current study analyzed the NHANES database to investigate the relationship between android fat mass, gynoid fat mass and CVD, with all-cause mortality.

Method: The study subjects were NHANES participants over 20 years old, two indicators of regional body composition, android fat and gynoid fat were measured by Dual Energy x-ray Absorptiometry (DEXA).

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Background: Cohort evidence linking long-term survival with exposure to multiple air pollutants (e.g., fine particulate matter [PM] and ozone) was extensively sparse in low- and middle-income countries, especially among older adults.

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Ice is present everywhere on Earth and has an essential role in several areas, such as cloud physics, climate change and cryopreservation. The role of ice is determined by its formation behaviour and associated structure. However, these are not fully understood.

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Among patients with diabetes mellitus, limited studies have investigated the relationship between anthropometric parameters and cardiovascular disease (CVD), with all-cause mortality. We examined the associations of arm circumference (AC), arm-to-waist ratio (AC/WC), and CVD, with all-cause mortality among patients with diabetes. This is a cohort study of 5497 diabetic individuals aged 20 or over who were recruited in the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2014.

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Background: Stroke is the predominant cause of death worldwide. We aimed to investigate the association of serum beta-2 microglobulin ( 2M) concentrations with risk of stroke and all-cause mortalities in a cohort study.

Methods: Overall, 4914 U.

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Introduction: The evidence on eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) intake status and long-term mortality among people with diabetes is scarce. This study aimed to investigate the relationship between EPA and DHA intakes with all-cause and cause-specific mortality in adults with diabetes.

Methods: This study included 2,991 adults with diabetes from the National Health and Nutrition Examination Survey (NHANES) 1999-2008.

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The effect of serum lycopene on the progression of cardiovascular diseases (CVDs) and their longevity remains a controversial topic. The purpose of this study was to evaluate the associations of different isomeric forms of serum lycopene with CVD and all-cause mortality in the American population. The National Health and Nutrition Examination Survey (NHANES) is a large population survey to investigate public health in the US.

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In the general population, there is little evidence of a link between blood urea nitrogen (BUN) and long-term mortality. The goal of this study was to explore whether higher BUN concentration is a predictor of cardiovascular disease (CVD) and all-cause mortality. From 1999 to 2006, the National Health and Nutrition Examination Survey (NHANES) included 17,719 adult individuals.

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Aim: Little is known regarding the association between breakfast type and cardiovascular mortality. We examined the associations between breakfast type and risks of mortality from stroke, coronary heart disease (CHD), and total cardiovascular disease (CVD).

Methods: A total of 85,319 males and females aged 40 to 79 years who were free from CVD and cancers at baseline were involved in this study.

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Article Synopsis
  • A study examined how changes in weight during early adulthood and later physical activity affect the risk of cardiovascular disease (CVD) and all-cause mortality in 23,193 US adults aged 40 to 85.
  • The research found that being physically active significantly reduces the risk of CVD mortality compared to inactivity, especially among those with various early-adulthood weight change patterns.
  • Overall, the study indicates that a lack of physical activity can exacerbate the negative effects of unhealthy weight changes in early adulthood on long-term health, highlighting the need for public health awareness.
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Objective: The potential effects of pulmonary dysfunction on cardiovascular diseases (CVD) and all-cause mortality are receiving attention. The current study aimed to explore whether reduced lung function predicts CVD and all-cause mortality in people with diabetes.

Methods: A total of 1,723 adults with diabetes (mean age 60.

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In response to the dangerous behavior of pedestrians roaming freely on unsupervised train tracks, the real-time detection of pedestrians is urgently required to ensure the safety of trains and people. Aiming to improve the low accuracy of railway pedestrian detection, the high missed-detection rate of target pedestrians, and the poor retention of non-redundant boxes, YOLOv5 is adopted as the baseline to improve the effectiveness of pedestrian detection. First of all, L1 regularization is deployed before the BN layer, and the layers with smaller influence factors are removed through sparse training to achieve the effect of model pruning.

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Background: Light after dusk disrupts the circadian rhythms and shifts the timing of sleep later; but it is unknown whether outdoor artificial light at night (ALAN) affects sleep quality. This study aimed to explore the association between residential outdoor ALAN and sleep duration in a nationally representative sample of Chinese older adults.

Methods: We examined the cross-sectional associations of outdoor ALAN with self-reported sleep duration in 13,474 older adults participating in the 2017-2018 wave of the Chinese Longitudinal Healthy Longevity Survey (CLHLS).

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Background: Air pollution might accelerate cognitive ageing; it is unclear whether large-scale interventions, such as China's Clean Air Act (CCAA), can mitigate cognitive deterioration. We aimed to evaluate the effect of CCAA on changes in cognitive function in older adults.

Methods: In this population-based, quasi-experimental study, we did a difference-in-differences analysis of the data collected during the 2014 and 2018 waves of the Chinese Longitudinal Healthy Longevity Survey (CLHLS).

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