Ultralight materials exhibit superelastic behavior depending on the selection, blending, and carbonization of the materials. Recently, ultimate low-density materials of 5 mg/cm3 or less have attracted attention for applications such as sensors, electrodes, and absorbing materials. In this study, we fabricated an ultralight material composed of single-walled carbon nanotubes (CNT) and sodium carboxymethyl cellulose (CMC), and we investigated the effect of density, composition, and weight average molecular weight of CMC on elastic recovery properties of ultralight CNT/CMC composites. Our results showed that the elastic recovery properties can be improved by reducing the density of the composite, lowering the mass ratio of CNTs, and using CMC with small molecular weight.

In recent years, the demand for high performance thermal insulations has increased. While foam and aerogels have been researched for high performance thermal insulation, novel material design is required for further improvement. A porous silica has been found to have the potential to form a new thermal insulation material. However, porous silica is a powder and is difficult to form the porous compact. Therefore, we propose a composite insulation of powdered porous silica (p-SiO2), carbon nanotubes (CNTs) and sodium carboxy methyl cellulose (CMC). The fine voids and bulky structure of p-SiO2 greatly suppress gas and solid heat transfer. The composite of CNT can improve the moldability and enhance the mechanical properties. The moldability of thermal insulating materials improved even with the addition of 1 wt% CNT. With the addition of 1 wt% CNT, the increase in thermal conductivity was less than 0.01 W⋅m-1⋅K-1.

Dimethylglyoxime (H2dmg) has been used as an analytical precipitating and spectrophotometric reagent for nickel, and forms three types of mononuclear complex with nickel: [Ni(Hdmg)2] (1), [NiX2(H2dmg)2](X = Cl, Br), and M2[Ni(dmg)2](M = Li, Na, K).1 The crystal structure of 1 has already been reported, 2 but those of the two other types have not. In an aqueous solution, 1 is stable, while the two others decompose immediately upon the exposure to water. Because the lability of [NiCl2(H2dmg)2] (2) depends on its molecular structure, it is interesting to elucidate its lability by comparing the structure of 1 with that of 2. We report here on an X-ray single-crystal structure determination of 2.Nickel(II) chloride (1.3 g, 10 mmol) and H2dmg (1.0 g, 9 mmol) were added to acetone (100 ml). The suspension was heated at 50˚C, while stirring until the supernatant became blue. The hot suspension was filtered off, the filtrate was slowly evaporated at room temperature, and blue block single crystals were obtained.A blue block crystal having a size of 0.40 × 0.30 × 0.20 mm was used. The data were collected at 273 K with graphitemonochromatized Mo Kα radiation and corrected for Lorentz and polarization effects. An empirical absorption correction (µ (Mo Kα) = 17.6 cm -1 ) was applied, which resulted in transmission factors ranging from 0.516 to 0.703. The structure was solved by direct methods (SIR92). The non-hydrogen atoms were refined anisotropically. Coordinates of H atom bonded to each O atom were determined from a difference Fourier map and refined isotropically. Methyl H atoms were

Introduction:This study assessed the changes in outpatient visits during the COVID-19 pandemic. Methods: Subjects were patients who visited the outpatient clinic of the Family Medicine Centre at Kanai Hospital between April and May in 2019 and 2020. We compared the number of outpatients, their age, and their reasons for encounter (RFEs) classified according to the International Classification of Primary Care, 2nd Edition between 2019 and 2020. Results: A total of 1159 patients in 2019 and 859 patients in 2020 were evaluated. There were 553 male patients in 2019 and 452 in 2020 (P =0.029). The mean age of the patients was 48.4 years in 2019 and 52.4 years in 2020 (P =0.010). The mean number of patients per day was 25.2 in 2019 and 17.9 in 2020 (P ＜ 0.001), with a significant reduction in patients aged 0-4 years in 2020 relative to 2019 (3.64 in 2019 vs.1.02 in 2020; P ＜ 0.001). On evaluation of RFEs classified by organic system, the proportion of respiratory RFEs decreased from 45.3% in 2019 to 31.6% in 2020 (P =0.026), and gastrointestinal RFEs decreased from 17.9% to 5.3% (P =0.003) among children. Among adults, the proportion of respiratory RFEs decreased from 22.6% in 2019 to 15.6% in 2020 (P ＜ 0.001) and skin RFEs decreased from 20.1% in 2019 to 15.3% in 2020 (P =0.011). Conclusion:The number of outpatients decreased during the COVID-19 pandemic. There were differences in the proportion of RFEs between the two periods.