Publications by authors named "Thanh-Tung Ha"
Article Synopsis
- This study explores changes in active school travel rates among 472 children in Hanoi, Vietnam, before and after the first Covid-19 lockdown in spring 2020.
- Findings reveal a significant drop in active school travel from 53% to under 31% after schools reopened, with parents increasingly opting for motorized transport due to health concerns.
- The study highlights that urban areas and longer distances from home to school saw greater declines in walking, as fears of virus transmission intensified perceptions of barriers to active travel.
In this study, TiO/CdS/CdCuSe, TiO/CdS/CdMnSe, and TiO/CdS/CdAgSe thin films were synthesized by chemical bath deposition for the fabrication of photoanode in quantum-dot-sensitized solar cells. As a result, the structural properties of the thin films have been studied by X-ray diffraction, which confirmed the zinc Blende structure in the samples. The optical films were researched by their experimental absorption spectra with different doping concentrations.
View Article and Find Full Text PDFSimple phalanx pattern leads to energy saving in cohesive fish schooling.
Proc Natl Acad Sci U S A
September 2017
The question of how individuals in a population organize when living in groups arises for systems as different as a swarm of microorganisms or a flock of seagulls. The different patterns for moving collectively involve a wide spectrum of reasons, such as evading predators or optimizing food prospection. Also, the schooling pattern has often been associated with an advantage in terms of energy consumption.
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