The toxicity of Cyperus rotundus rhizome steam distillate constituents and their related compounds to adult females and males of the susceptible KS-BG strain and field-collected SR-BG and DR-BG colonies of Blattella germanica (L.) was examined using residual contact + fumigant and vapor-phase mortality bioassays. Results were compared with those of three organophosphorus (chlorpyrifos, dichlorvos, and fenitrothion), three carbamate (bendiocarb, dioxacarb, and propoxur), and three pyrethroid insecticides (bifenthrin, cypermethrin, and deltamethrin). In contact + fumigant mortality bioassay, p-cymene (LC50, 0.33 mg/cm2) was the most toxic terpenoid, followed by o-cymene, m-cymene, β-pinene, 1,8-cineole, and α-pinene, (LC50, 0.44–0.92 mg/cm2) against female B. germanica. These terpenoids were less toxic than the insecticides tested. Females were 3.1–3.6 times more tolerant than males to three cymene compounds. The toxicity of these monoterpenoids were almost identical against females from either of the three strains, even though the SR-BG and DR-BG females exhibited resistance to bifenthrin [resistance ratio (RR), 96 and 17], cypermethrin (RR, 67), deltamethrin (97 and 66), dioxacarb (19 and 22), and propoxur (24 and 32). In vapor-phase mortality bioassay, these monoterpenoids were effective in closed but not in open containers, indicating that the effect of these compounds was largely a result of vapor action. C. rotundus rhizome steam distillate and its constituents merit further study as potential insecticides for the control of insecticide-resistant B. germanica populations as fumigants with contact action.

As part of an on-going malaria surveillance effort conducted by the Korea Center for Disease Concectration & Prevention (KCDC), a total of anopheline mosquitoes was tested for the presence of Plasmodium vavax 18s protein. Mosquitoes were collected (using black light traps) from 2 quarantine stations (Kimpo branch office of Incheon Airport National quarantine station, Paju city and Sokcho branch office of Donghae National quarantine station, Goseong county), identified to species, and tested by PCR for the presence of P. vivax 18s protein. The quarantine stations is located near de-militarized zone in Republic of Korea . A total of 140 Anopheles bellene, 3 An. lesteri, 153 An. pullus, 238 An. kleini, and 1,523 An. sinensis was tested. Two Anopheles bellene, Seven An. kleini, and Nineteen An. sinensis were positive for P. vivax 18s protein. Anopheles sinensis is the predominent Anopheline mosquito encountered in the northern part of the ROK and is a known malaria vector. Other potential vectors include An. lesteri Baisas & Hu and An. yatsushiroensis Miyazaki. Anopheles bellene haven't been reported as vector of malaria until now. However, in this study, positive results were detected from An. bellene collected at Paju city and Goseong county, 27 May and 22 Jun, respectively. Anopheles bellene as potential vector of P. vivax might be further studied.

The susceptibility of the Blattella germcanica (L.) in the Republic of Korea (ROK) to insecticides was evaluated under laboratory conditions using 12 insecticides currently used by the local public health centers and/or pest control operators in the ROK. The insecticides included seven pyrethroids and five organophosphages. Based on their LD50values, the order of susceptibility of B. germanica adults to the insecticides was chlorpyrifos-methyl, profenofos, and chlorpyrifos with the values of 0.07, 0.29, and 0.88 ㎍/♀, respectively. The least susceptibility was obtained with tetramethrin at LD50 of 7.39 ㎍/♀. In the comparative resistance test, the resistance ratios (RR) of 12 insecticides were compared to each other using field collected B. germanica adults in Seoul between 1993 and 2007. Blattella germanica demonstrated higher RRs to pyrethroids such as λ-cyhalothrin, and low RRs among the organophosphates. Among the pyrethroids, λ-cyhalothrin had the highest RRs of 111 and 129 fold differences at LD50 and LD90 values, respectively. Among the organophosphates, profenofos was observed to have the highest RRs of 4 and 15 fold differences at LD50 and LD90 values, respectively. However, there were no significant differences in susceptibility to tetramethrin, chlorpyrifos, and fenitrothion. Blattella germanica was more susceptible to pyridafenthion showing a 0.7 fold difference in a resistance rate (RRLD50), respectively. Resistance ratio of tetramethrin was low, but susceptibility was also not high.

중수로 원전내 여러 계통으로 부터 발생된 폐수지내에는 핵종이 다량 함유되어 있으며, Class A 및 C 폐기물로 분류되는 폐수지의 적정 처리 기술 개발을 위한 기초연구를 수행하였다. IRN-150 혼상 이온교환수지를 이용하여 비방사성 이온과 양이온의 흡착 특성 및 탈차용액을 이용한 이온의 제거 특성을 고찰하였다. IRN-150 수지의 이온의 흡착능은 이론값에 근접한 11 mg-C/g-IRN-150을 나타내었고, 양이온의 흡착 친화도를 단일성분 및 복합성분 시스템을 이용하여 분석하였다. 여러 가지 탈착용액을 이용한 폐수지로부터 이온의 제거 특성을 평가한 결과, 핵종을 전량 효과적으로 제거하기 위해서는 보다도 용액이 유리한 것으로 나타났다.

[ ] 핵종이 함유된 IRN-150 혼상 폐수지로부터 이온의 제거 및 제거된 핵종의 기체로의 전환 특성을 고찰하였다. 비방사성 이온이 흡착되어 있는 IRN-150 혼합수지로부터 이온의 탈착용액내로의 분리 및 기체로의 전환 특성을 용액의 농도 변화에 따라 평가하였으며, 탈착용액으로는 를 사용하였고, 비교 평가를 위하여 NaOH, , HCl를 이용한 기체로의 전환 특성을 분석하였다. 아울러 월성 원자력발전소에 저장중인 실제 폐수지를 이용하여 탈착용액을 이용한 폐수지내 핵종의 기체화 특성을 평가하였고, 탈착후 잔류용액내 존재하는 감마핵종을 분석하였다.

Hemp (Cannabis sativa L.) is a dioecious plant, although monoecious plants are bred in some cultivars for fiber or seed production. Recently, hemp has received attention for medicinal use with some cannabinoids, including cannabidiol. Self-fertilization for breeding inbred lines is difficult because of dioeciousness and anemophily in hemp. This experiment was conducted to develop a self-fertilization method by forming female flowers and seeds from male plants of dioecious hemp. To induce the formation of female flowers on male plants, 500 ㎎ L-1 of ethephon was sprayed on plants at soon, seven and fourteen days after primordia formation. The plant ratio of female flowers formation and the number of harvested seeds were increased by ethephon treatment. Female flowers of male plants have 5 stigmas in contrast to the dual stigma of female 1plants. Male plant seeds were lighter and smaller than those from female plants. Although the germination rate was lower than that of normal seeds from female plants, the seeds from male plants germinated to grow seedlings. Thus, we suggest that hemp plants should be treated with ethephon at soon after primordia formation to induce the formation of more female flowers on the male plants.

The characterization of detectors installed in space- and ground-based instruments is important to evaluate the system performance. We report the development of a detector performance test system for astronomical applications using the Andor iKon M CCD camera. The performance test system consists of a light source, monochromator, integrating sphere, and power meters. We adopted the Czerny–Tuner monochromator with three ruled gratings and one mirror, which covers a spectral range of 200–9,000 nm with a spectral resolution of ~1 nm in the visible region. Various detector characteristics, such as the quantum efficiency, sensitivity, and noise, can be measured in wide wavelength ranges from the visible to mid-infrared regions. We evaluated the Korea Astronomy and Space Science Institute (KASI) detector performance test system by using the performance verification of the Andor iKon-M CCD camera. The test procedure includes measurements of the conversion gain (2.86 e−/ADU), full well capacity (130 K e−), nonlinearity, and pixel defects. We also estimated the read noise, dark current, and quantum efficiency as a function of the temperature. The lowest measured read noise is 12 e−. The dark current at 223 K was determined to be 7 e−/s/pix and its doubling temperature is 5.3°C ± 0.2°C at an activation energy of 0.6 eV. The maximum quantum efficiency at 223 K was estimated to be 93 % ± 2 %. We proved that the quantum efficiency is sensitive to the operating temperature. It varies up to 5 % in the visible region, while the variation increases to 30 % in the near-infrared region. Based on the comparison of our results with the test report by the vendor, we conclude that our performance test results are consistent with those from the vendor considering the test environment. We also confirmed that the KASI detector performance test system is reliable and our measurement method and analysis are accurate.

Due to modern trends with postponing child-bearing and getting worse living environment in women, an ovarian aging increased pregnancy failure and other complications with menopause or premature ovarian failure. Although several theories have been suggested such as mitochondrial malfunction, DNA damage/repair/methylation, caloric restriction, studies regarding ovarian aging-related molecular mechanisms for development of therapeutic methods are insufficient so far. Our objective is to determine molecular pathways of ovarian aging that result in pregnancy failure and other complications in women health to develop treatment strategies. This study is consisted of two parts: in Phase I stage, we analyzed distinct gene expression profile between young and aged mouse ovaries, and in Phase II stage several preferentially expressed genes in both ovaries were selected and analyzed their physiological functions and involved molecular networks related to ovarian aging for development of diagnostic markers and therapeutic methods. Ovaries from 10 week and 11 month-old FVB/NJ female mice with synchronized estrus cycle were collected for this study. A half of each ovary was used for RNA preparation and the other half for histological analysis. Using the Illumina HiSeq 2000 System, preferentially expressed genes were identified. Functional annotation database-based gene-set enrichment analyses and Pathway Studio® were employed to evaluate aging-related molecular networks. These findings were confirmed through qRT-PCR and immunohistochemistry. To validate RNA-Seq data, we examined expression patterns of marker genes (Amh, Bmp15 and Nobox) that were wellknown to be decreased in ovarian aging process. In young or aged ovary, preferentially expressed 876 genes were identified and extracellular matrix (ECM; p<0.001) and chromatin/nucleosome-related (p<0.001) protein-coded genes have the majority in these genes by GOTERM analysis. Amongthem, we selected several candidate genes and confirmed their expression profiles by qRT-PCR and immunohistochemistry followed by molecular network analysis. Regarding molecular interactions in these genes, PathwayStudio® was employed to predict aging-involved molecular networks in mouse ovary. Here we report a couple of candidate molecular networks and medicines (chemicals) for targeting these preferentially expressed genes/proteins. Further analyses are scheduled to produce transgenic animal models and with human ovarian tissues/cell lines.

This research study aims to examine who vulnerable people are on disaster & emergency situations in South Korea. There are various vulnerable people such as children, senior citizen, the disabled and foreigners. I choose foreigners who live in South Korea as vulnerable group among them because there would be no system and study for helping foreigners on the situations, comparing to other vulnerable groups. Foreigners' residents often could have accidents from disaster and emergency situations because they live in South Korea for long time and various places such as factory, farmland, fishery and so on. To solve these problems, we should be willing to cope with emergencies for foreigners’ residents. First of all, it is necessary that a variety of educations and promotions should be a prerequisite to foreign residents' easy access to safety. As well, revitalizing a variety of communities, we need to figure out a way to cope with emergent disasters. This study will present some preparations to solve the problems, as exhibited in the following. First, multilingual emergency disaster & emergency services applications. Second, foreign residents provide disaster & emergency related promotional media. Third, education and social institutions established disaster & emergency. Forth, selection foreign volunteer firefighters. The research being sought by this study is a set of findings that contribute to the development of practical and realistic policy recommendations which may be used for disaster & emergency management practitioners, as well as policy and decision makers at all level.

The Immersion Grating Infrared Spectrometer (IGRINS) is a near-infrared wide-band high-resolution spectrograph jointly developed by the Korea Astronomy and Space Science Institute and the University of Texas at Austin. IGRINS employs three HAWAII-2RG Focal Plane Array (H2RG FPA) detectors. We present the design and fabrication of the detector mount for the H2RG detector. The detector mount consists of a detector housing, an ASIC housing, a Field Flattener Lens (FFL) mount, and a support base frame. The detector and the ASIC housing should be kept at 65 K and the support base frame at 130 K. Therefore they are thermally isolated by the support made of GFRP material. The detector mount is designed so that it has features of fine adjusting the position of the detector surface in the optical axis and of fine adjusting yaw and pitch angles in order to utilize as an optical system alignment compensator. We optimized the structural stability and thermal characteristics of the mount design using computer-aided 3D modeling and finite element analysis. Based on the structural and thermal analysis, the designed detector mount meets an optical stability tolerance and system thermal requirements. Actual detector mount fabricated based on the design has been installed into the IGRINS cryostat and successfully passed a vacuum test and a cold test.

Nitrogen (N) fertilization is essential for alleviating nutrient deficiencies of the world’s population by increasing rice production, one of the most important food crops of our time. Here we established an in vivo hydroponics rice seedling culture system to investigate the physio-biochemical and molecular responses of various rice genotypes to low nitrogen application. Yoshida’s nutrient solution (YS) was used to grow rice seedlings, and at three-week-old the seedlings manifested highly stable and reproducible symptoms, such as reduced shoot growth and length. Out of 12 genetically selected or tested genotypes, almost all (11 genotypes) showed varied degrees of growth reduction response to applied nitrogen (4 and 40 ppm N for treatment and control, respectively), but SR19663-B-B-34-3-3-3-1 showed similar growth as the control though its leaf width was smaller than the control. The leaves of a 11 representative low nitrogen-responsive genotype as BG90-2 were sampled for revealing the protein profiles between low and normal (control) nitrogen application by using two-dimensional gel electrophoresis (2-DGE) followed by staining of separated proteins with silver. Fifty differentially expressed silver stained protein spots were excised from 2-D gels and 41 proteins identified using high-throughput mass spectrometry (MS) using matrix-assisted laser desorption/ionization-time of flight-MS and nano electrospray ionization liquid chromatography tandem MS. These proteins could be assigned as major (energy metabolism, photosynthesis and oxidative stress) and minor functional categories, revealing many novel low N-responsive proteins, including those having energy/photosynthesis, and defense/stress, and iron homeostasis-related functions.

We study on the dynamic interaction with a simulated physical-biological coupled model response to nutrient reduction scenario in Jinhae Bay. According to the low relative errors, high regression coefficients of COD and DIN, and realistic distribution in comparison to the observation, our coupled model could be applicable for assessing the marine ecosystem response to nutrient input reduction in Jinhae Bay. Due to the new construction and expansion of sewage treatment plant from our government, we reduce 50% nutrient inputs near Masan Bay and sewage treatment plant. COD achieves Level Ⅱ in Korea standard of the water quality from the middle of the Masan Bay to all around Jinhae Bay except the inner Masan Bay remaining at Level Ⅲ. When our experiment reduces 50% nutrient inputs near Masan Bay and Dukdong sewage treatment plant simultaneously, COD decreases to about 0.1-1.2 mg/L (128°30’~128°40’ E , 35°05’~35°11’ N). The COD from the middle of the Masan Bay to Jinhae Bay achieves Level Ⅱ.

“Chensu”, a new oriental squash variety was developed by the National Horticultural Research Institute. An interspecific hybridization was made between “Jecheonjaeae,” the local variety of C. moschata and C. martinezii resistant to powdery mildew in 1991.

“Mansu”, a new oriental squash variety was developed by the National Horticultural Research Institute. An interspecific hybridization was made between “Jecheonjaerae”, the local variety of Cucurbita moschata and C. martinezii resistant to powdery mildew i