Photonic crystal hydrogels (PCHs) are innovative materials that translate imperceptible deformations and humidity changes into visible colors, broadening the applications of photonics in bioengineering and smart materials. To overcome poor mechanical properties of traditional PCHs limited by weak intermolecular forces, we designed a PCH with a dual-network framework comprising N-isopropylacrylamide-co-acrylamide (NIPAM-co-AM) and biomass lotus root starch (LR). Since LR is rich in hydroxyl groups, it can undergo molecular linkage entanglement with the NIPAM-co-AM hydrogel matrix, forming hydrogen bonds that significantly enhance the mechanical properties of the PCH.
View Article and Find Full Text PDFSolid fuel combustion exposure is a leading global health risk factor, yet evidence on its effects, especially on vulnerable children, is sparse. This large-scale, multi-center prospective study aimed to address this gap by involving 9997 schoolchildren across China between 2013 and 2015. Here we show that lung function levels exhibited a marginally significant decline among children exposed to solid fuel usage.
View Article and Find Full Text PDFWhat Is Already Known About This Topic?: The mortality rate due to pneumonia varies depending on the infectious agents present in a low- temperature environment.
What Is Added By This Report?: This study aimed to examine the relationship between low temperatures and cold waves and the risk of mortality from infectious pneumonia in the elderly. The findings indicate a significant increase in the risk of infectious pneumonia, specifically bacterial pneumonia, during periods of low temperatures and cold waves.
Background: Constrained by no proper way to assess cumulative exposure, the joint effect of air pollution cumulative exposure doses on childhood asthma and wheezing (AW) was not understood.
Objective: To assess the association between cumulative exposure to multiple air pollutants in early life and childhood AW.
Methods: We designed a nested case-control study based on the birth cohort in Jinan City.
What Is Already Known About This Topic?: Studies have extensively documented the separate and independent effects of extreme temperature and ozone on morbidity and mortality associated with respiratory and circulatory diseases.
What Is Added By This Report?: The study revealed a significant association between elevated temperature, ozone pollution, and the combined effect of high temperature and ozone pollution with an increased risk of all-cause medical emergency calls (MECs) and MECs specifically related to neurological diseases.
What Are The Implications For Public Health Practice?: Interventional measures should be implemented to mitigate exposure to high temperatures and ozone levels.
Background: Ischemic cerebral infarction is one of cerebrovascular diseases with high incidence, disability rate, and mortality globally, and neuronal cell apoptosis is a crucial cause of brain injury during cerebral infarction.
Methods: A middle cerebral artery occlusion (MCAO) model was built in Sprague-Dawley rats to simulate ischemic cerebral infarction. An in vitro model of ischemic cerebral infarction was constructed in BV2 cells with the treatment of oxygen-glucose deprivation (OGD).
Background: Given differences in vulnerability of children in early life, a life course approach to asthma and wheezing (AW) in young children caused by ozone (O) is not fully understood.
Methods: We conducted a birth cohort in Jinan, China from 2018 to 2021 to elucidate the onset model of childhood AW due to O exposure. An inverse distance weighted model was used for individual exposure assessment.
Carbon monoxide (CO) poisoning is a public health concern in developing countries especially in China with a high disease burden. We aimed to focus on non-occupational CO poisoning caused by household coal heating secular trends based on registry data in Jinan, China, and we aim to provide further evidence and suggestions for public health policy. We analyzed the occurrence and development trend and assess the spatial-temporal epidemiological characteristics of non-occupational CO poisoning caused by household coal heating in Jinan between 2007 and 2021.
View Article and Find Full Text PDFEpidemiological studies show strong associations between fine particulate matter (PM) air pollution and adverse pulmonary effects. In the present study, wintertime PM samples were collected from three geographically similar regions-Sacramento, California, USA; Jinan, Shandong, China; and Taiyuan, Shanxi, China-and extracted to form PM, PM, and PM, respectively, for comparison in a BALB/c mouse model. Each of four groups was oropharyngeally administered Milli-Q water vehicle control (50 μL) or one type of PM extract (20 μg/50 μL) five times over two weeks.
View Article and Find Full Text PDFChina has made great efforts in air pollution control since 2013. However, there is a lack of evaluation of environmental, health and economic co-benefits associated with the national and local air pollution control measures at a city level. We analyzed local air pollution control policies and implementation in Jinan, one of the most heavily air-polluted cities in China between 2013 and 2017.
View Article and Find Full Text PDFBackground: Primary drug-resistant tuberculosis (DR-TB) has contributed to a significant health and economic burden on a global scale, especially in China. we sought to estimate epidemiological characteristics of primary DR-TB in China from 2004 to 2018.
Methods: Eleven thousand four hundred sixty-seven newly diagnosed and 1981 retreated TB cases with drug susceptibility data were included.