Exactly solvable dual bus-route model.

In 1998, O'Loan et al. introduced a simplified bus-route model to illustrate bus dynamics. However, fluctuations in passenger numbers make it challenging to achieve an exact solution for the model's stationary state, as these fluctuations can impact bus behavior.

Stacking-dependent and electric field-driven electronic properties and band alignment transitions in γ-GeSe/GaSSe heterostructures: a first-principles study.

In this work, we present a comprehensive investigation into the electronic properties and contact behavior of γ-GeSe/GaSSe heterostructures using first-principles calculations. Two stacking configurations, γ-GeSe/SGaSe and γ-GeSe/SeGaS, are explored, both exhibiting semiconducting behavior with type-II and type-I band alignments, respectively. Notably, our results show that the band alignment transition in these heterostructures can occur spontaneously by simply altering the stacking configuration, eliminating the need for external factors.

Eu singly-doped and Eu/Sm co-doped ZnS quantum dots: structure, optical properties and energy transfer.

In this study, Eu ion singly doped and Eu/Sm ions co-doped ZnS semiconductor quantum dots (QDs) were successfully synthesized using a wet chemical method in 1-octadecene (ODE) solvent. The successful doping of Sm and Eu ions into the ZnS host lattice and the composition and valence of the elements present in the sample were confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Structural and morphological studies revealed the presence of Eu-doped ZnS and Eu/Sm co-doped ZnS QDs of about 3-4 nm size with a zinc blende structure.

New biomarkers for liver involvement by dengue infection in adult Vietnamese patients: a case-control study.

Liver injury with marked elevation of aspartate aminotransferase enzyme (AST) is commonly observed in dengue infection. To understand the pathogenesis of this liver damage, we compared the plasma levels of hepatic specific, centrilobular predominant enzymes (glutamate dehydrogenase, GLDH; glutathione S transferase-α, αGST), periportal enriched 4-hydroxyphenylpyruvate dioxygenase (HPPD), periportal predominant arginase-1 (ARG-1), and other non-specific biomarkers (paraoxonase-1, PON-1) in patients with different outcomes of dengue infection. This hospital-based study enrolled 87 adult dengue patients, stratified into three groups based on plasma AST levels (< 80, 80-400, > 400 U/L) in a 1:1:1 ratio (n = 40, n = 40, n = 40, respectively.