In the wake of the Great Hanshin-Awaji Earthquake that occurred in 1995, a volunteer group “shiryo-net” was established. We rescued historical documents in cooperation with the cultural property department in the disaster area, members of the local history research groups, and local residents. I will report on the methods and problems with the preservation and first aid of photographic materials that were damaged by sewage.

The average household has a large amount of personal and family photos stored in their home. Paper-burned photographs are pasted in large, thick, heavy albums, and the owners are aging and facing the problem of succession. Some digital photos are now held in quantities of tens of thousands because they are invisible to the eye, making it difficult to find a specific photo. Photos in the home are mainly a record of memories, and the task of organizing them is necessary to manage them in a way that makes them easy to see and find, and to pass on the family history to the next generation. The methods and various examples will be presented.

Pandemic of COVID-19 has forced many museums to reduce their activities. They are trying to recover their presence by utilizing digital images as new resource for their curatorial works. This report introduces some recent projects using digital images of museum collections in Japan, mainly of National Museums.

As of 2021, The Museum of Art, Kochi, which opened in 1993, houses 41,949 artworks in multiple collections. 34,000 of these are photographs donated by Ishimoto Yasuhiro（1921-2012）, a photographer associated with Kochi. In addition to his photographs, Ishimoto donated an enormous number of films and reference material, and assigned the copyrights of the photographs to Kochi Prefecture. The first section of this article will describe the activities of the Ishimoto Yasuhiro Photo Center, which was founded within the museum for the purpose of utilizing these resources. The second section will report the museum’s disaster prevention initiatives, giving specific examples based on its actual experience of flood damage caused by torrential rains in 1998.

The National Museum of Ethnology was damaged by the earthquake that struck northern Osaka Prefecture on June 18, 2018, and was forced to close for about three months. In this paper, we will introduce the disaster recovery work of the National Museum of Ethnology and introduce daily management methods aiming for a safer museum.

Studies on double hypernuclei, which is doubly strange nuclei using the nuclear emulsion are being conducted in Gifu University. This article reports on the following issues; the analysis status of the latest double hypernuclear experiment E07, the mass measurement method of the double hypernuclei, the selection of the α-decay events using machine learning, the automatic search of π^＋ mesons and μ^＋ particles emitted from the π^＋ decay, the high-resolution event analysis using an X-ray microscope, the latest stage development, and the future double hypernuclear experiment.

Effect of halide ions to the formation of gold nanoparticles via the gold-deposition development was investigated. Development rate for a silver-chloride emulsion was small, and that for a silver-bromide one was fairly large, while that for a silver iodobromide emulsion was much larger than these rates. The rate with a developer including only chloride ions was small, but this increased by the addition of bromide ions. Addition of small amount of iodide ions caused large increase in the rates for some emulsions. Iodide ions are essential to increase in the development rates, but the degree of increase differed among the emulsions used in this study. The rates were also different for each of the emulsion-manufactures, suggesting the influences of gelatin or some additives peculiar to them. It was speculated that other factors in addition to iodide ions affected the rates of the gold-deposition development.