モリシマアカシアの全木パルプ化に関する基礎的研究

全木パルプ化に関する基礎的データを蓄積する目的で, モリシマアカシア各部位をパルプ化し, 組織構成要素および紙質と関連づけて研究した。その結果, アカシア樹皮の師部繊維は木繊維より大きい繊維長を持ち, これが全木パルプシートにおける紙力向上に寄与することから, アカシアが全木パルプ化に適した樹種であると推定し得た。なお, 樹皮には製紙に際して悪影響を及ぼすと考えられる要素がほとんど存在しないが, 未さらし全木パルプには易漂白性の褐色斑点が存在する

Aging of the Zero-Field-Cooled Magnetization in Ising Spin Glasses: Experiment and Numerical Simulation

A new protocol of the zero-field-cooled (ZFC) magnetization process is studied experimentally on an Ising spin-glass (SG) Fe$_{0.50}$Mn$_{0.50}$TiO$_3$ and numerically on the Edwards-Anderson Ising SG model. Although the time scales differ very much between the experiment and the simulation, the behavior of the ZFC magnetization observed in the two systems can be interpreted by means of a common scaling expression based on the droplet picture. The results strongly suggest that the SG coherence length, or the mean size of droplet excitations, involved even in the experimental ZFC process, is about a hundred lattice distances or less.Comment: 4 pages, 5 fugure

Two Cases of Nivolumab Re-Administration after Pneumonitis as Immune-Related Adverse Events

Nivolumab is a recently approved medication for the treatment of unresectable malignant melanoma. Many immune-related adverse events (irAEs) associated with nivolumab have been reported, such as pneumonitis, hepatitis, dermatitis, and thyroiditis. Prednisolone can effectively treat irAEs. However, it is unclear how or if nivolumab should be administered to patients after they have experienced an irAE. Herein, we show 2 patients who underwent pneumonitis as irAE. Case 1 demonstrated a cryptogenic organizing pneumonia pattern in the CT scan and case 2 had a diffuse alveolar damage (DAD) pattern. Oral corticosteroids improved chest shadow of CT scan in both cases. However, when nivolumab was re-administrated, case 1 demonstrated no symptoms, but case 2 demonstrated pneumonia again. From our cases, it is difficult to re-administrate nivolumab for the patients with pneumonitis which shows a DAD pattern in CT, even if oral corticosteroids improve their symptoms