Publications by authors named "Shengkai Yang"
The impact of vitamin B2 (riboflavin) intake on cognitive performance among older adults in the United States (US) remains inadequately understood. This study aimed to explore the association between vitamin B2 intake and cognitive performance among non-institutionalized elderly people in the US. Weighted logistic regression was used to evaluate the association between vitamin B2 intake and cognitive performance.
View Article and Find Full Text PDFBackground: Pesticides are widely used in agricultural activities. Although pesticide use is known to cause damage to the human body, its relationship with thyroid function remains unclear. Therefore, this study aimed to investigate the association between pesticide exposure and thyroid function.
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- - The study investigates the relationship between the renin-angiotensin system and acute ischemic stroke (AIS), focusing on the role of serum indicators like angiotensin I (Ang I) in predicting patient outcomes after endovascular thrombectomy (EVT).
- - Researchers analyzed data from AIS patients who underwent EVT and compared various health indicators between them and healthy controls, identifying key risk factors including advanced age, high blood glucose, high D-dimer, and high prothrombin activity.
- - The findings revealed that lower Ang I levels were associated with AIS, while higher levels correlated with better prognosis; a nomogram utilizing Ang I and the albumin-globulin ratio showed significant predictive ability (AUC = 0.859
Article Synopsis
- This study examines the relationship between dietary vitamin B1 (thiamine) intake and cognitive performance in older adults in the U.S., using data from 2,896 participants over 60 years old.
- Researchers assessed vitamin B1 intake through dietary recalls and measured cognitive performance with three different tests, finding significant associations where lower vitamin B1 intake correlated with poorer cognitive performance.
- The findings suggest that higher dietary vitamin B1 may help improve cognitive function in older adults, particularly among certain subgroups like males and those with lower education levels.
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- This study examined how surgical compliance impacts the survival outcomes of meningioma patients, analyzing a large cohort of over 122,000 cases from a medical database.
- Results indicated that 92.4% of patients had good surgical compliance, which significantly correlated with better overall survival rates compared to those with poor compliance.
- The researchers developed a predictive model based on seven factors (age, sex, race, tumor behavior, size, family income, and residential setting) to understand and improve surgical adherence among these patients.
Background: This study aimed to investigate putative causal effects between constipation and stroke using bidirectional Mendelian randomization (MR) analysis.
Methods: Based on the cross-sectional study, logistic regression models were developed to assess the association between constipation and stroke prevalence. Subsequently, genome-wide association studies statistics were employed to perform MR analysis between constipation and stroke, as well as its subtypes.
Article Synopsis
- * In 2017, a 61-year-old woman had a meningioma removed, and follow-up scans showed no remaining tumor; however, in 2022, she experienced vision problems again, prompting further investigation.
- * MRI results indicated a possible new pituitary adenoma, leading to another surgery, which successfully improved her vision, revealing both tumors in the histology analysis of the lesion.
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- A study investigates indigo production and dyeing using a CO/O sensor and cellphone camera, focusing on transforming indican into indigo and assessing gas concentrations during this process.
- The research reveals a strong correlation between gas levels (CO and O) and the yield of indigo, indicating that these concentration changes are crucial parameters for determining optimal production time, reducing reliance on traditional craft experience.
- Additionally, the color analysis of indigo dyeing is enhanced through camera technology by calculating RGB and HSV values, allowing for more precise color measurement.
Hydrothermal synthesis of fluorescent carbon dots from gardenia fruit for sensitive on-off-on detection of Hg and cysteine.
Spectrochim Acta A Mol Biomol Spectrosc
October 2020
Article Synopsis
- Nitrogen and sulfur co-doped carbon dots (N/S-CDs) are created using gardenia fruit through a simple hydrothermal process, resulting in nearly spherical particles about 2.1 nm in size.
- These N/S-CDs show outstanding fluorescence stability across various pH levels and sodium chloride concentrations, with a notable quantum yield of 10.7%.
- They can detect mercury by turning off their fluorescence and can be restored by adding cysteine, making them a practical sensor for environmental and biological applications.
Article Synopsis
- The liquid phase exfoliation (LPE) method is an effective and cost-efficient way to produce graphene on a large scale, and this research utilizes fulvic acid to enhance the process.
- The resulting graphene dispersion reached a concentration of 0.63 mg/mL, predominantly featuring 1-5 layered flakes with minimal defects, stabilized by interactions with fulvic acid.
- The graphene, when applied as a coating on aluminum, demonstrated impressive corrosion inhibition rates of up to 85.5% and 99.4% in acidic and saline environments, indicating promising applications for anti-corrosion technology.
The concentrations of seven heavy metals (HMs) in jujube samples collected from Hetian region (HTR), Hami region (HMR), Erkesu region (ESR), Bayikuleng region (BLR), and Turpan region (TUR) were determined by inductively coupled mass spectrometry (ICP-MS). The accuracy and precision of the analytical method were confirmed by the certified reference material (GBW 07605). In general, the concentration of iron was higher than those of the other six metals in the investigated jujube samples.
View Article and Find Full Text PDFFollowing photodissociation of fluorobenzene (C6H5F) at 193 and 157 nm, we detected the products with fragmentation-translational spectroscopy by utilizing a tunable vacuum ultraviolet beam from a synchrotron for ionization. Between two primary dissociation channels observed upon irradiation at 193 (157) nm, the HF-elimination channel C6H5F --> HF + C6H4 dominates, with a branching ratio of 0.94+/-0.
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- A study on the photodissociation of o-fluorotoluene at 193 nm reveals rotationally resolved emission spectra of HF, showing near Boltzmann-type distributions with a temperature of about 1080 K and a nascent rotational temperature of 1130 ± 100 K.
- The vibrational distribution ratios for HF indicate a vibrational temperature of 5330 ± 270 K, with calculated average vibrational energies of about 25 ± 3 (12) kJ mol(-1).
- Similar experiments on p-fluorotoluene show comparable rotational and vibrational energies, and the observed energy distributions suggest mechanisms related to four-center elimination, potentially involving seven-membered-ring isomers during the
Following photodissociation of formyl fluoride (HFCO) at 193 nm, we detected products with fragmentation translational spectroscopy utilizing a tunable vacuum ultraviolet beam from a synchrotron for ionization. Among three primary dissociation channels observed in this work, the F-elimination channel HFCO-->HCO+F dominates, with a branching ratio approximately 0.66 and an average release of kinetic energy approximately 55 kJ mol(-1); about 17% of HCO further decomposes to H+CO.
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