Multiple Near-Infrared Chromisms of a Heteromerous Overcrowded Ethylene with Large Permanent Dipole Moment.

An overcrowded ethylene composed of electron-donating anion, naphthoxide, and electron-accepting cation, acridinium, has been synthesized. It is in equilibrium between a folded conformer having a smaller permanent dipole moment with visible light absorption and a twisted conformer having a larger permanent dipole moment with NIR light absorption. The overcrowded ethylene shows multiple NIR chromisms, such as solvatochromism, thermochromism, mechanochromism, vapochromism, halochromism, and amphoteric electrochromisms, which are caused by the conformational change between folded and twisted conformers or by controlling the energy difference between the HOMO of the donor moiety and the LUMO of the acceptor moiety.

Changes in Clinical Features and Severity of COVID-19 with the Emergence of Omicron Variants: A Shift Towards a Common Disease.

Background: The emergence of the Omicron variant of severe acute respiratory syndrome coronavirus-2 has significantly altered the clinical features and severity of coronavirus disease 2019 (COVID-19).

Objective: This study aims to evaluate whether the clinical factors that previously predicted COVID-19 remain valid following the emergence of the Omicron variant.

Methods: This cross-sectional study was conducted at Showa University Fujigaoka Hospital from April 2022 to March 2023.

Green upgrading of SPring-8 to produce stable, ultrabrilliant hard X-ray beams.

SPring-8-II is a major upgrade project of SPring-8 that was inaugurated in October 1997 as a third-generation synchrotron radiation light source. This upgrade project aims to achieve three goals simultaneously: achievement of excellent light source performance, refurbishment of aged systems, and significant reduction in power consumption for the entire facility. A small emittance of 50 pm rad will be achieved by (1) replacing the existing double-bend lattice structure with a five-bend achromat one, (2) lowering the stored beam energy from 8 to 6 GeV, (3) increasing the horizontal damping partition number from 1 to 1.

Assessing the effectiveness of menstrual health education in Japan: A non-randomized comparative study of adolescent girls with typical development and those with intellectual disabilities and high support needs.

This study elucidates the effectiveness of a menstrual education program with segmented MHM procedure on the MHM skills of girls with intellectual disabilities/HSN compared with those with typical development. Participants in a nonrandomized comparative study included nine adolescent girls with intellectual disabilities/HSN and ten with typical development. They practiced MHM on dolls three times: before, immediately after, and three months after participating in the educational program.