The present study describes Philodromus rufus Walckenaer, 1826 with detailed descriptions, taxonomic photographs, distribution map, and proposition of a new synonym. Due to morphological similarity between P. pseudoexilis Paik, 1979 and P. rufus, taxonomic identity of P. pseudoexilis has been doubtful to date. A detailed bibliographic study of types of P. pseudoexilis between P. rufus and examination of specimens from the type locality of P. pseudoexilis with specimens of P. rufus collected across the country showed that P. rufus has all diagnostic characters found in types of P. pseudoexilis. Therefore, P. pseudoexilis Paik, 1979 should be regarded as a new synonym of Philodromus rufus Walckenaer, 1826.

The present study describes Philodromus paiki sp. nov., which was previously misidentified as P. fuscomarginatus (De Geer, 1778), P. poecilus (Thorell, 1872), and P. spinitarsis Simon, 1895 in Korea, as a new species with diagnosis, detailed descriptions, and taxonomic photographs. Additionally, P. spinitarsis is also described to correct previous misidentifications of Korean records of the species.

The radiological characterization of SSCs (Structure, Systems and Components) plays one of the most important role for the decommissioning of KORI Unit-1 during the preparation periods. Generally, a regulatory body and laws relating to the decommissioning focus on the separation and appropriate disposal or storage of radiological waste including ILW (intermediate level waste), LLW (low level waste), VLLW (very low level waste) and CW (clearance waste), aligned with their contamination characteristics. The result of the preliminary radiological characterization of KORI Unit-1 indicated that, apart from neutron activated the RV (reactor vessel), RVI (reactor vessel internals), and BS (biological shielding concrete), the majorities of contamination were sorted to be less than LLW. Radiological contamination can be evaluated into two methods. Due to the difficulties of directly measuring contamination on the interior surfaces of the pipe, called CRUD, the assessment was implemented by modeling method, that is measuring contamination on the exterior surfaces of the pipes and calculating relative factors such as thickness and size. This indirect method may be affected by the surrounding radiation distribution, and only a few gamma nuclides can be measured. Therefore, it has limitation in terms of providing detailed nuclide information. Especially, α and β nuclides can only be estimated roughly by scaling factors, comparing their relative ratios with the existing gamma results. To overcome the limitation of indirect measurement, a destructive sampling method has been employed to assess the contamination of the systems and component. Samples are physically taken some parts of the systems or components and subsequently analyzed in the laboratory to evaluate detailed nuclides and total contamination. For the characterization of KORI Unit-1, we conducted the radiation measurement on the exterior surfaces of components using portable instruments (Eberline E-600 SPA3, Thermo G20-10, Thermo G10, Thermo FH40TG) at BR (boron recycle system) and SP (containment spray system) in primary system. Based on these results, the ProUCL program was employed to determine the destructive sample collection quantities based on statistical approach. The total of 5 and 8 destructive sample quantities were decided by program and successfully collected from the BR and SP systems, respectively. Samples were moved to laboratory and analyzed for the detail nuclide characteristics. The outcomes of this study are expected to serve as valuable information for estimating the types and quantities of radiological waste generated by decommissioning of KORI Unit-1.

Two linyphiid spiders, Saitonia kawaguchikonis Saito & Ono, 2001 and Asthenargus niphonius Saito & Ono, 2001 were confirmed from Korea for the first time. Males of S. kawaguchikonis and a female of A. niphonius were collected with pitfall traps in a leaf litter of mixed forests in three National Parks (Hallyeohaesang National Park, Mt. Naejangsan, and Mt. Sobaeksan) during the seasonal surveys for the spider fauna in mountainous terrain from 2018 to 2020. These two species were formerly known from China and Japan, or only from Japan, respectively. The present study describes these two species with measurements, morphological illustrations, and a distribution map. This report adds the genus Asthenargus Simon & Fage, 1922 from Korea to the Korean spider fauna for the first time.

지금까지 추진해 오던 제외지 중심의 하천복원에서 벗어나 최근에는 제내지까지 복원하고자 하는 노력이 시도되고 있다. 이의 일환으로 구하도의 복원이 추진되고 있으나 이로 인한 수리적 연결성 및 생태적 연결성 향상을 정량적으로 평가할 적합한 모형의 개발은 미진한 상태이다. 본 연구에서는 구하도 복원을 통한 생태적 연결성 회복을 평가할 수 있는 격자기반의 수리해석 모형을 개발하였다. 본 모형의 적용성을 검토하기 위하여 노탑리 일원의 청미천 하천복원 사업지를 대상으로 수리생태적 연결성을 평가하였다. 본 모형으로 수리 및 생태적 특성의 시 ․ 공간적 분포를 신속하고 간단하게 해석할 수 있었으며 향후 수리적 생태적 연결성을 평가하는 적절한 도구로 활용될 수 있을 것으로 판단된다.

Background : Ancanthopanax senticosus Fruits Extracts were studied in order to develop as functional pigment. The extracts were evaluated for physicochemical properties and biological activity. Methods and Results : Ancanthopanax senticosus fruits extracts were extracted by the rate of ethanol and distilled water in 1% citric acid. The extracts were evaluated for physicochemical properties by chromaticity, total sugar content, free sugar content, acidity, total anthocyanin contents. Total sugar and acidity were 0.10 brix and 0.44% respectively. Fructose and glucose were 1.54% and 0.36% respectively. The 60% ethanol extracts showed the highest extraction yield and total anthocyanin content. The α-glucosidase inhibitory activity of 60% and 80% ethanol extracts higher than other extracts. Conclusion : These results suggest that Ancanthopanax senticosus fruits extracts may be useful purple pigment for anti-diabetes activity.

Background : Aerial parts of Angelica gigas were studied in order to develop as functional pigment. The extracts were evaluated for physicochemical properties and biological activity. Methods and Results : Aerial parts of Angelica gigas were extracted by the rate of ethanol and distilled water. The extracts were evaluated for physicochemical properties by chromaticity, total sugar content, free sugar content, acidity, chlorophyll and carotenoids contents. Total sugar and acidity were 0.90 brix and 2.84% respectively. Chlorophyll and carotenoids contents were 0.24 and 0.04% respectively. The extracts were evaluated for biological activity by anti-inflammatory and anti-diabetes activity. Cell viabilities were measured by MTT assay. Effect of extracts on nitric oxide (NO) production from RAW264.7 cells was accessed by Griess reagent assay. Extracts to RAW 264.7 cells reduced amounts of nitrite by 76.0%. Conclusion : These results suggest that aerial parts of Angelica gigas Nakai may be useful pigment for anti-inflammatory and anti-diabetes activity.

A new chestnut cultivar, “Mipung” was released from Korean native chestnut trees by chestnut laboratory of the Korea Forest Research Institute (KFRI) in 2006. This cultivar was selected first from a natural population in 1984, and the preliminary, advanced, and regional yield trials for evaluation were carried out from 1985 to 2005. “Mipung” is a late-ripening cultivar, and its optimal ripening date is late September. It has good nut quality for eating raw and processing. Its average nut weight is 27.3 g, much heavier than that of the check cultivar, “Arima”. It had also been identified to have resistance to chestnut blight disease and chestnut gall wasp threatening to chestnut trees. The average yield of 8 year-old “Mipung” was 8.8kg per tree, which was superior to that of “Arima”.