Evaluation of a two-dimensional Moire-free antiscatter grid for cone-beam computed tomography.

Background: Scatter radiation is a traditional problem in cone-beam computed tomography (CBCT). Accordingly, numerous methods have been researched for scatter reduction in terms of software- or hardware-based solutions. The concept of a two-dimensional antiscatter grid (2D-ASG) has been shown to provide a solution to the scatter reduction in CBCT.

Field study of the indoor environments for preventing the spread of the SARS-CoV-2 in Seoul.

Despite the prolonged global spread of COVID-19, few studies have investigated the environmental influence on the spread of SARS-CoV-2 RNA with a metropolitan scale, particularly the detection of SARS-CoV-2 after disinfection at multi-use facilities. Between February 2020 and January 2021, 1,769 indoor air samples and object surfaces were tested at 231 multi-use facilities where confirmed cases were known to have occurred in Seoul, to determine whether SARS-CoV-2 RNA could be detected even after disinfection. Samples were collected by air scanner and swab pipette and detected by real-time RT-PCR.

Degradation of chemical warfare agents over cotton fabric functionalized with UiO-66-NH.

Herein, cotton fabric was treated with an alkaline solution to increase the content of surface hydroxyl groups and then functionalized with UiO-66-NH, a nanoporous metal-organic framework. Instrumental analysis of the thus treated fabric revealed that its surface was covered with UiO-66-NH crystals in a uniform manner. The ability of the functionalized fabric to degrade two chemical warfare agents (soman and sulfur mustard) was probed by testing its permeability to these two agents (swatch testing), and the excellent degradation performance was concluded to be well suited for a broad range of filtration and decontamination applications.

Regulation of magnesium-inhibited cation current by actin cytoskeleton rearrangement.

Magnesium-inhibited, non-selective cation current (I(MIC)) is activated by depletion of intracellular Mg(2+) and ATP. I(MIC) transports various divalent cations including Mg(2+) and Ca(2+), and is involved in cell viability. We investigated the effect of actin dynamics on I(MIC).

Modulation of delayed rectifier potassium channels by alpha1-adrenergic activation via protein kinase C zeta and p62 in PC12 cells.

When PC12 cells are exposed to nerve growth factor (NGF), they extend neurites and express autonomic ganglion cell properties. We have previously shown that NGF is capable of inducing p62 expression, enabling the formation of the protein kinase C zeta (PKCzeta)-p62-Kvbeta (beta-subunit of delayed rectifier K+ channel) complex, a Kv channel-modulating complex. The formation of this complex results in the shifting of the Kv channel activation curve to the left via PKCzeta activity.