Takeshi Kinase

TL;DR: Analysis that supports tarballs formation in which primary organic particles undergo chemical and physical processing within ∼3 h of emission is reported, which implies that the chemical changes increase the particle sphericity on the substrates, which correlates with particle surface tension and viscosity, and contribute to tarball formation during aging in BB smoke.

TL;DR: In this article, the authors quantify the particle size dependence of the sensitivities of two filter-based photometers, PSAP and COSMOS, using mono-disperse nigrosin particles, generated by the combination of a differential mobility analyzer and an aerosol particle mass analyzer.

TL;DR: In this article, a theory of particle filtration by fibrous filter is applied to reproduce the penetration depth of particles into a filter matrix, and the light transmissivity of the matrix is calculated by the use of radiative transfer theory for plane-parallel layers.

TL;DR: In this article, the authors examined the resuspension process of radiocesium (134,137Cs) based on long-term measurements of the atmospheric concentration and the aerosol characteristic observations by scanning electron microscopy (SEM) and measurement of the biomass burning tracer, levoglucosan.

TL;DR: Electron microscopy showed that the particles collected on filters in summer were predominantly of biological origin (bioaerosols), with which the observed radiocaesium activity concentration varied, and the fungal spore concentration in air was positively correlated with the radiocaeesium concentration at Namie in summer 2016.