Publications by authors named "W K Zhen"

Background: Chronic hepatitis B often progresses silently toward hepatocellular carcinoma (HCC), a leading cause of mortality worldwide. Early detection of HCC is crucial, yet challenging.

Aim: To investigate the role of dynamic changes in alkaline phosphatase to prealbumin ratio (APR) in hepatitis B progression to HCC.

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E2 elimination and SN2 substitution reactions are of central importance in preparative organic synthesis due to their stereospecificity. Herein, atomistic dynamics of a prototype reaction of ethyl chloride with hydroxide ion are uncovered that show strikingly distinct features from the case with fluoride anion. Chemical dynamics simulations reproduce the experimental reaction rate and reveal that the E2 proceeding through a direct elimination mechanism dominates over SN2 for the hydroxide ion reaction.

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Background: Alzheimer's disease (AD) has a major negative impact on people's quality of life, life, and health. More research is needed to determine the relationship between age and the pathologic products associated with AD. Meanwhile, the construction of an early diagnostic model of AD, which is mainly characterized by pathological products, is very important for the diagnosis and treatment of AD.

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Article Synopsis
  • The study examines how poly(lactic acid) (PLA) nanocomposite films with Hec-g@PS perform in extreme natural environments, focusing on their degradation and ability to adsorb Cu(II).
  • During degradation, PLA/Hec-g@PS films exhibited lower roughness and crack rates compared to standard PLA films, likely due to enhanced interactions within the material that slowed degradation.
  • The PLA/Hec-g@PS films not only extended lifespan by 1.08 times but also showed improved Cu(II) adsorption, making them promising for applications in wastewater treatment and soil remediation.
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Hafnium (Hf)-based nanoscale metal-organic layers (MOLs) enhance radiotherapeutic effects of tissue-penetrating X-rays via a unique radiotherapy-radiodynamic therapy (RT-RDT) process through efficient generation of hydroxy radical (RT) and singlet oxygen (RDT). However, their radiotherapeutic efficacy is limited by hypoxia in deep-seated tumors and short half-lives of reactive oxygen species (ROS). Herein the conjugation of a nitric oxide (NO) donor, S-nitroso-N-acetyl-DL-penicillamine (SNAP), to the Hf secondary building units (SBUs) of Hf-5,5'-di-p-benzoatoporphyrin MOL is reported to afford SNAP/MOL for enhanced cancer radiotherapy.

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