Higher alkanes are a major class of intermediate volatile organic compounds (IVOCs) emitted by vehicles, which have been considered as important precursors of secondary organic aerosol (SOA) in urban area. Dynamometer experiments were conducted to characterize emissions from gasoline and diesel vehicles in China. Three types of higher alkanes, namely acyclic, cyclic, and bicyclic alkanes, were explicitly quantified through the novel proton transfer reaction time-of-flight mass spectrometer with NO ionization (NO PTR-ToF-MS) with time response of 1 second.
View Article and Find Full Text PDFBased on the background of the continuously rising global demand for clean energy, offshore wind power, as an important form of renewable energy utilization, is booming. However, the pile foundations of offshore wind turbines are subject to long-term erosion in the harsh marine environment, and the problem of corrosion damage is prominent, which seriously threatens the safe and stable operation of the wind power system. In view of this, a meshless numerical simulation method based on smoothed particle hydrodynamics (SPH) and a method for generating the concrete meso-structures are developed.
View Article and Find Full Text PDFLithium metal anodes generally suffer from uncontrolled dendrite growth and large volume change, while traditional skeletons such as LiIn and LiSn are too heavy and discontinuous to offer highly efficient structural supportability for composite Li anodes. In this work, lightweight and stable fiber-clustered skeletons, which are composed of LiB fibers and jointed LiSi nanoparticles, can be obtained by smelting SiB powder and Li ingots. In addition to serving as both ionic and electronic conductors for composite Li anodes, the stable skeletons reduced volumetric fluctuation by offering uniform, heterogeneous, and continuous architectures while suppressing lithium dendrites with low nucleation overpotential and diffusion energy barrier.
View Article and Find Full Text PDFBackground: Liver hepatocellular carcinoma (LIHC) is a prevalent malignancy globally, exhibiting substantial incidence and mortality rates. Early diagnosis and prevention of metastasis are crucial for the benefit of patients with liver cancer. The present study aimed to elucidate the involvement of in liver cancer through the utilization of bioinformatics.
View Article and Find Full Text PDFClin Res Hepatol Gastroenterol
August 2024
Background: Cholangiocarcinoma is a malignant tumor that occurs in the bile duct system, and the prognosis of patients is poor. Currently, research suggests that long non-coding RNAs (lncRNAs) in the treatment and prevention of cholangiocarcinoma. This study primarily focuses on the regulation and potential mechanism of the lncRNA XIST (XIST) in cholangiocarcinoma.
View Article and Find Full Text PDFIntroduction: The study aims to examine the mediating role of anxiety in the relationship between social participation and Subjective Wellbeing among Chinese older adults. Additionally, it investigates the moderating ed of education in this relationship.
Methods: The data came from the Chinese Longitudinal Healthy Longevity Survey (CLHLS) published by peking University, with a sample size of 10,626 individuals aged 60 years and above.
This study aimed to investigate the molecular transmission network and drug resistance in treatment-naive HIV-1-infected patients in the Liangshan District, China. The research subjects for this study were HIV-1-infected patients who did not receive any antiretroviral therapy (ART) in the Liangshan District between January 2022 and July 2023. Peripheral venous whole-blood samples were collected from the research subjects.
View Article and Find Full Text PDFLow-grade cervical intraepithelial neoplasia (CIN1) is an early stage of cervical cancer development. Previously, we reported that exposure to polycyclic aromatic hydrocarbons (PAHs) increases the risk of cervical precancerous lesions, especially in females with a high-risk human papillomavirus (HR-HPV) infection. However, the effects of PAHs on CIN1 progression remain unclear.
View Article and Find Full Text PDFThe global rise in prediabetes and diabetes, with type 2 diabetes (T2DM) being predominant, highlights the association between T2DM and hypertriglyceridemia (HTG). Patients with both abnormal glucose levels and HTG require increased attention due to higher risks of complications and mortality. Therefore, this study aimed to find the key long non-coding RNA (lncRNA) of HTG in the abnormal glucose metabolism patients.
View Article and Find Full Text PDFSwitch defective/sucrose non-fermentable (SWI/SNF) chromatin remodeling complexes are multi-subunit machineries that establish and maintain chromatin accessibility and gene expression by regulating chromatin structure. However, how the remodeling activities of SWI/SNF complexes are regulated in eukaryotes remains elusive. B-cell lymphoma/leukemia protein 7 A/B/C (BCL7A/B/C) have been reported as subunits of SWI/SNF complexes for decades in animals and recently in plants; however, the role of BCL7 subunits in SWI/SNF function remains undefined.
View Article and Find Full Text PDFNon-syndromic cleft lip with or without cleft palate (NSCL/P) is a common congenital facial malformation with a complex, incompletely understood origin. Long noncoding RNAs (lncRNAs) have emerged as pivotal regulators of gene expression, potentially shedding light on NSCL/P's etiology. This study aimed to identify critical lncRNAs and construct regulatory networks to unveil NSCL/P's underlying molecular mechanisms.
View Article and Find Full Text PDFBackground: This study aims to explore whether serum miR-185-5p levels are related to the injury severity and prognosis of traumatic brain injury patients.
Methods: Serum miR-185-5p level was quantified in 120 TBI patients. The Glasgow Coma Scale (GCS) was used to grade the damage, and the Glasgow Outcome Scale (GOS) was used to evaluate the prognosis 3 months after TBI.
Data is limited on intestinal microbiota and metabolites in healthy residents exposed to cadmium (Cd), a population uniquely susceptible to Cd toxicity through contaminated foods. In this study, the 16 S rRNA gene sequencing, serum metabolomics and urine metabolomics were performed to examine the alterations of gut microbiota and metabolomics profile of wistar rats exposed to Cd. These findings indicated that Cd exposure markedly altered the structure of gut microbial community, reduced significantly microbiome diversity, and identified 5 phyla and 6 genera with significant changes.
View Article and Find Full Text PDF: Precocious puberty, one of the common pediatric endocrine system diseases, has been related to reduced adult height, adverse psychological outcomes and long-term health consequences. Previous findings have found that low levels of vitamin D appear to be associated with the characteristics of precocious puberty such as early menarche. However, the effect of vitamin D on precocious puberty remains controversial.
View Article and Find Full Text PDFSci Total Environ
April 2023
Nitrophenols, a class of important intermediate products from the oxidation of aromatics, can participate in photochemistry and influence the atmospheric oxidative capacity. However, the reported photolysis frequencies of nitrophenols show considerable discrepancies. Here, measurements of nitrophenol, and methyl nitrophenol using a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) at both urban and regional sites in southern China are used to constrain photolysis frequencies of nitrophenols.
View Article and Find Full Text PDFIn this experiment, the polysaccharide was extracted from Pueraria lobata (Willd.) Ohwi, and its structural characteristics and bioactivity were investigated. The results showed that Pueraria lobata polysaccharide (PLP) was composed of fucose, arabinose, galactose, glucose, xylose, mannose in a molar proportion of 0.
View Article and Find Full Text PDFJ Cancer Res Clin Oncol
August 2023
Purpose: This study aims to explore the expression of hnRNP K in cervical carcinogenesis and to investigate the regulatory role of hnRNP K on HPV16 oncogene expression as well as biological changes in cervical cancer cells.
Methods: In total 1042 subjects, including 573 with the normal cervix and 469 with different grades of cervical lesions were enrolled in this study to explore the association between hnRNP K and HPV16 oncogene expression in cervical carcinogenesis. Additionally, the Gene Omnibus (GEO) database was used to analyze hnRNP K mRNA expression in cervical cancerization.