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The Center for Underground Physics of the Institute for Basic Science (IBS) in Korea has been planning the construction of a deep underground laboratory since 2013 to search for extremely rare interactions such as dark matter and neutrinos. In September 2022, a new underground laboratory, Yemilab, was finally completed in Jeongseon, Gangwon Province, with a depth of 1,000 m and an exclusive experimental area spanning 3,000m³. The tunnel is encased in limestone and accommodates 17 independent experimental spaces. Over 2 years, from 2023 to 2024, the Yangyang Underground Laboratory facilities will be relocated to Yemilab. Preparations are underway for the AMoRE-II, a neutrinoless double beta decay experiment, scheduled to begin in Q2 2024 at Yemilab. Additionally, Yemilab includes a cylindrical pit with a volume of approximately 6,300m³, designed as a multipurpose laboratory for next-generation experiments involving neutrinos, dark matter, and related research. This article provides a focused overview of the construction and structure of Yemilab. [ABSTRACT FROM AUTHOR]

This study aimed to develop a vigor test method that can be applied in the seed storage and ecological restoration of Aging chive (Allium senescens L). The impact weight of each temperature on germination was described with a sine curve equation. The closer the temperature was to 18.9 °C, the faster the germination was, and temperatures below 8.0 °C and above 29.7 °C negated the temperature accumulation effect. A verification and validation test confirmed the 'impact weight on germination' to be reasonable because it exhibited a hump-shaped relationship with the time to reach 85% germination among the temperature treatments. Furthermore, the time to reach 25, 50 and 75% germination and the change in germination with time did not differ between the actual and predicted values. The hourly accumulated value of ' impact weight on germination' was taken as the temperature score (TS), and the temperature requirement for vigorous germination was 294TS. The temperature requirement was applied to hourly temperature data from Geumsan, Korea, from 1999-2018, and the average date of vigorous seed germination was May 3. Increasing temperature elevation advanced the predicted germination date. Based on the earliest predicted date, germination will advance rapidly. If the temperature is elevated by 2.5 °C, the germination date will advance markedly to November 23. [ABSTRACT FROM AUTHOR]

Keywords: Korea; Perilla; Perilla frutescens; Pseudomonas amygdali; wildfire disease EN Korea Perilla Perilla frutescens Pseudomonas amygdali wildfire disease 1 2 2 05/30/23 20230401 NES 230401 Perilla ( I Perilla frutescens i ) is an important crop which produces edible leaves and oil from its seeds which is used as a seasoning in Korean food (Kim et al., [2]). Korea, Perilla, Perilla frutescens, wildfire disease, Pseudomonas amygdali. [Extracted from the article]

The annual modulation signal observed by the DAMA experiment is a long-standing question in the community of dark matter direct detection. This necessitates an independent verification of its existence using the same detection technique. The COSINE-100 experiment has been operating with 106 kg of low-background NaI(Tl) detectors providing interesting checks on the DAMA signal. However, due to higher backgrounds in the NaI(Tl) crystals used in COSINE-100 relative to those used for DAMA, it was difficult to reach final conclusions. Since the start of COSINE-100 data taking in 2016, we also have initiated a program to develop ultra-pure NaI(Tl) crystals for COSINE-200, the next phase of the experiment. The program includes efforts of raw powder purification, ultra-pure NaI(Tl) crystal growth, and detector assembly techniques. After extensive research and development of NaI(Tl) crystal growth, we have successfully grown a few small-size (0.61–0.78 kg) thallium-doped crystals with high radio-purity. A high light yield has been achieved by improvements of our detector assembly technique. Here we report the ultra-pure NaI(Tl) detector developments at the Institute for Basic Science, Korea. The technique developed here will be applied to the production of NaI(Tl) detectors for the COSINE-200 experiment. [ABSTRACT FROM AUTHOR]