수요자 참여형으로 육성된 최고품질 벼 ‘알찬미’

현웅조(Ung-Jo Hyun),원용재(Yong-Jae Won),정응기(Eung-Gi Jeong),안억근(Eok-Keun Ahn),이정희(Jeong-Heui Lee),정국현(Kuk-Hyun Jung),박향미(Hyang-Mi Park),전용희(Yong-Hee Jeon),곽지은(Jieun Kwak),성낙식(Nak-Sig Sung),김정천(Jeong-Cheon K 한국육종학회 2021 한국육종학회지 Vol.53 No.2

Alchanmi’, a japonica rice variety, was developed from a cross between ‘Junam’ and ‘Chilbo’ by a rice breeding team at the NationalInstitute of Crop Science and Icheon, Agricultural Technology Center in 2018. The heading date of ‘Alchanmi’ was August 10 in the middleplain area-two days later than that of ‘Hwaseong’. ‘Alchanmi’ had a culm length of 69 cm, 16 cm shorter than that of ‘Hwaseong’, and 103spikelets per panicle. The viviparous germination rate of ‘Alchanmi’ was 24.4%. It showed resistance to blast, bacterial blight (K1, K2, K3race), and stripe virus, but was susceptible to the K3a race of bacterial blight, dwarf and black streak dwarf viruses, and plant hoppers. Themilled rice of this variety exhibited a translucent and medium short grain shape. The cooked rice grains of ‘Alchanmi’ had an excellent palatabilityindex (0.7) and showed lower amylose content (18.6%) than that of ‘Hwaseong’. The grain milling characteristics of ‘Alchanmi’ were betterthan those of ‘Hwaseong’, especially the head rice milling recovery ratio and head rice ratio (96.2%). ‘Alchanmi’ showed 5.83 MT/ha of milledrice productivity at 6 sites under ordinary cultivation (Registration No. 8132).

Isolation, Root Colonization and Evaluation of Some Plant Growth-promoting Rhizobacteria in Paddy Rice

Ui-Gum Kang,Hyang-Mi Park,Jee-Yeon Ko,Jae-Saeng Lee,Weon-Tai Jeon,Chang-Young Park,Ki-Do Park,Vladimir K. Chebotar 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.3

In order to obtain promising rice growth-promoting microbial strains that can be used as substitutes for chemical fertilizers, 172 bacterial strains were isolated from rice roots grown in Korean and Russian soils. Out of them, the strains KR076, KR083, KR181 and RRj228 showed plant growth-promoting activities on maize seedlings. Bacillus megaterium KR076 and Bacillus sp. KR083 showed both nitrogen-fixing and plant growth-promoting activities, while Rhizobium sp. KR181 and Pseudomonas sp. RRj228 appeared to support only plant growth-promotion, but not N2 fixation. Especially, RRj228 showed high growth promoting activity at low concentrations. Inoculation studies with KR083 and RRj228 revealed a high affinity to the Japonica rice variety such as Junambyeo than the Korean Tongil type variety such as Arumbyeo. Both KR083 and RRj228 strains showed rhizoplane and/or endophytic colonization in Japonica and Tongil types rice when soaked with the bacterial suspension of 1.1 × 10<SUP>5</SUP> cfu ml<SUP>-1</SUP> for six and twelve hours. However, the total bacterial cell numbers were higher in the roots of Japonica variety than in the Tongil type. In inoculation trials with Daesanbyeo rice variety, the seedlings inoculated with KR181 and RRj228 at the rate of 2.0 × 10<SUP>6</SUP> cfu ml-1 showed yield increment of 35% and 33% (p < 0.01), respectively, so that they contributed to the replacement of chemical fertilizer at half doses of N, P₂O<SUP>5</SUP>, and K2O in pots. In Junambyeo rice seedlings, the strain RRj228, when inoculated with a cell suspension of 1.8 × 10<SUP>6</SUP> cfu ml<SUP>-1</SUP>, promoted 3.4% higher yield at 70% dose than at a full dose level of N 110 kg ha<SUP>-1</SUP> in field. These results suggest that the rhizobacteria KR181 and RRj228 are prospective strains for enhancing rice performance.

KSTAR 전류전송계통 진공배기계 구축 및 시운전

우인식,송낙형,이영주,곽상우,방은남,이근수,김정수,장용복,박현택,홍재식,박영민,김양수,최창호,Woo, I.S.,Song, N.H.,Lee, Y.J.,Kwag, S.W.,Bang, E.N.,Lee, K.S.,Kim, J.S.,Jang, Y.B.,Park, H.T.,Hong, Jae-Sik,Park, Y.M.,Kim, Y.S.,Choi, C.H. 한국진공학회 2007 Applied Science and Convergence Technology Vol.16 No.6

KSTAR (Korea Superconducting Tokamak Advanced Research) 전류전송계 (Current Feeder System)는 4.5 K의 저온에서 운전되는 초전도자석과 300 K의 실온에서 운전되는 전원장치 (Magnet Power Supply)를 전기적으로 연결하는 장치이다. 전류전송계는 최대 35 kA의 DC 전류가 인가되는 TF 자석용 및 350초간 20$\sim$26 ㎄의펄스 전류가 인가되는 PF 자석용으로 분리되어 있으며 리드박스 내부는 전류인입선, 초전도버스라인, 열차폐체 및 냉각라인 등이 설치되어 있다. 리드박스와 초전도버스라인 진공덕트는 KSTAR 주장치와는 별도로 진공배기 시스템이 구축되어있으며, 전체적으로 아령 형상을 하고 있는 진공공간을 효율적으로 진공배기하기 위하여 버스라인 덕트와 주장치 저온용기 사이에 진공 분리막 (Vacuum Separator)이 설치되어 있다. 진공배기를 위한 초벌배기계는 로터리펌프 및 부스터펌프 (Mechanical Booster Pump)로 구축되었으며 고진공 배기계는 4대의 크라이오펌프 (Cryo-pump)로 구축되었다. 진공장치 운전을 위해 PLC 기반의 로컬 제어시스템을 구축하였고 장치 안전을 위한 자체 인터록과 중앙인터록 시스템 및 중앙제어연계시스템이 함께 구축되어 있다. 전류전송계 설치완료 후 진공배기 시운전을 통해 배기시스템의 자가진단 및 리드박스 내부에 설치되어 있는 헬륨배관의 진공누설검사를 완료하였으며, 액체질소를 사용하여 전류인입선 냉각시험을 완료하였다. Current feeder system (CFS) for Korea superconducting tokamak advanced research(KSTAR) project plays a role to interconnect magnet power supply (MPS) and superconducting (SC) magnets through the normal bus-bar at the room temperature(300 K) environment and the SC bus-line at the low temperature (4.5 K) environment. It is divided by two systems, i.e., toroidal field system which operates at 35 kA DC currents and poloidal field system wherein 20$\sim$26 kA pulsed currents are applied during 350 s transient time. Aside from the vacuum system of main cryostat, an independent vacuum system was constructed for the CFS in which a roughing system is consisted by a rotary and a mechanical booster pump and a high vacuum system is developed by four cryo-pumps with one dry pump as a backing pump. A self interlock and its control system, and a supervisory interlock and its control system are also established for the operational reliability as well. The entire CFS was completely tested including the reliability of local/supervisory control/interlock, helium gas leakage, vacuum pressure, and so on.

High-Pressure Synthesis of $SmFeAsO_{1-x}F_x$(x=0.2) Single Crystals

이현숙,박재현,이재엽,김주영,조병기,정창욱,이후종,Lee, Hyun-Sook,Park, Jae-Hyun,Lee, Jae-Yeap,Kim, Ju-Young,Cho, B.K.,Jung, Chang-Uk,Lee, Hu-Jong The Korean Superconductivity Society 2009 Progress in superconductivity Vol.10 No.2

Fluorine-doped $SmFeAsO_{1-x}F_x$ single crystals with the nominal value of x=0.2 were grown at $1350-1450^{\circ}C$ under the pressure of 3.3 GPa by using the self-flux method. Plate-shaped single crystals in the range of a few-150 ${\mu}m$ in their lateral size were obtained. The detailed crystal structure was analyzed by using the x-ray diffractometry. Superconducting transition temperature, determined by the resistive transition, of a single crystal was about 49 K with a narrow resistive transition width of ${\sim}1$ K. A relatively sharp transition, a low residual resistivity, and a large residual resistivity ratio compared with those reported for $REFeAsO_{1-x}F_x$(RE=Sm, Nd) single crystals indicate the high quality of our single crystals.

IGRINS NEAR-IR HIGH-RESOLUTION SPECTROSCOPY OF MULTIPLE JETS AROUND LkH<i>α</i>234

Oh, Heeyoung,Pyo, Tae-Soo,Yuk, In-Soo,Park, Byeong-Gon,Park, Chan,Chun, Moo-Young,Pak, Soojong,Kim, Kang-Min,Oh, Jae Sok,Jeong, Ueejeong,Yu, Young Sam,Lee, Jae-Joon,Kim, Hwihyun,Hwang, Narae,Kaplan, K American Astronomical Society 2016 The Astrophysical journal Vol.817 No.2

<P>We present the results of high-resolution near-IR spectroscopy toward the multiple outflows around the Herbig Be star LkH alpha 234 using the Immersion Grating Infrared Spectrograph. Previous studies indicate that the region around LkHa 234 is complex, with several embedded young stellar objects and the outflows associated with them. In simultaneous H- and K-band spectra from HH 167, we detected 5 [Fe II] and 14 H-2 emission lines. We revealed a new [Fe II] jet driven by radio continuum source VLA 3B. Position-velocity diagrams of the H-2 1-0 S(1) lambda 2.122 mu m line show multiple velocity peaks. The kinematics may be explained by a geometrical bow shock model. We detected a component of H-2 emission at the systemic velocity (V-LSR = -10.2 km s(-1)) along the whole slit in all slit positions, which may arise from the ambient photodissociation region. Low-velocity gas dominates the molecular hydrogen emission from knots A and B in HH 167, which is close to the systemic velocity; [Fe II] emission lines are detected farther from the systemic velocity, at V-LSR = -100--130 km s(-1). We infer that the H-2 emission arises from shocked gas entrained by a high-velocity outflow. Population diagrams of H-2 lines imply that the gas is thermalized at a temperature of 2500-3000 K and the emission results from shock excitation.</P>

낮병원 정신질환자의 사회성과 자아존중감에 관한 사이코사이버네틱 미술치료 모델의 이론적 고찰

박재연,김선희 서울여자대학교 특수치료전문대학원 2014 심리치료: 다학제적 접근 Vol.14 No.1

Multi-level States of GaMnAsP Single Layer Induced by Spin-orbit Torque

Kyung Jae Lee,Seongjin Park,Phunvira Chongthanaphisut,Sanghoon Lee,X. Liu,M. Dobrowolska,J. K. Furdyna 한국자기학회 2021 한국자기학회 학술연구발표회 논문개요집 Vol.31 No.1

We have investigated spin-orbit torque (SOT) induced switching of a 25 nm GaMnAsP single layer with perpendicular magnetic anisotropy (PMA) grown by molecular beam epitaxy (MBE). We have fabricated Hall device along [100] crystal direction, in which Rashba-type and Dresselhaus-type spin-orbit induced (SOI) fields are perpendicular to each other. The SOT induced magnetization switching was carried out with a current density of ~1.9×10⁶ A/cm² under in-plane bias field of 500 Oe at 55 K. We have achieved a reproducible and tunable multi-level states of minor-loop by performing current scan ranging from 8.0×10⁵ A/cm² to 1.9×10⁶ A/cm² while monitoring Hall resistance. This multi-level states can also be produced by applying pulsed current with duration of 160 ms. The results suggest that the system can be used as a memristors for neuromorphic computing.

하시모토갑상선염에 동반된 골수를 침범한 ( 병기 4E 기 ) 원발성 갑상선 림프종 1 예

이기업,송영기,박중열,김기수,김상희,공경엽,조재근,추윤호,엄완식,지현숙 대한내분비학회 1994 Endocrinology and metabolism Vol.9 No.4

Primary lymphoma of the thyroid is a relatively rare malignant tumor of the thyroid. It is known to be frequently associated with Hashimoto's thyroiditis. In Korea, a few cases of primary lymphoma of the thyroid have been reported and most of these cases were in the stage I E or II E. Recently, we experienced a case of the primary thyroid lymphoma, stage IV E associated with Hashimoto's thyroiditis in a 70-year-old woman who presented with dysphagia and dyspnea due to rapidly enlarging neck mass. She was treated with combination chemotherapy(cyclophosphamide, adriamycin, vincristine and methylprednisolone) and local radiotherapy and achieved partial response with resolution of dysphagia and dyspnea(J Kor Soc Endocrinol 9: 390-394, 1994).

유방암 환자의 말초혈액에서 역전사효소연쇄중합반응을 이용한 Human Mammaglobin 측정의 임상적 유용성

김재홍,강석윤,송정엽,최태영,임홍석,김선경,김영진,박준성,김현수,최진혁,임호영,김효철 대한조혈모세포이식학회 2001 대한조혈모세포이식학회지 Vol.6 No.2

Background: The mammaglobin gene encodes a novel protein that is secreted from the mammalian epithelium of normal breast tissue as well as malignant breast cancer tissues. In order to ascertain the prognostic value of mammaglobin gene in breast cancer patients, we measured the expression of human mammaglobin (hMAM) by RT-PCR method in various stages of breast cancer patients. Methods: Peripheral blood samples from forty healthy volunteers and 114 breast cancer patients were obtained. Peripheral blood stem cells (PBSC) collected for the purpose of autologous stem cell transplantation in five patients with metastatic breast cancer and ten patient with high risk for relapse and no evidence of disease were used for hMAM assay. Results: All samples from peripheral blood of forty healthy individuals (twenty males and twenty females) were negative for hMAM, whereas 43 of 114 samples (38%) from breast cancer patients were positive for hMAM mRNA. All the normal breast tissues were positive for hMAM mRNA. hMAM mRNA expression was detected in 11 of 42 (26%) in breast cancer patients who underwent for curative resection and had no evidence of disease, in 8 of 25 (34%) with chemo-sensitive relapsed disease, and in 16 of 32 (53%) with chemo-refractory progressive disease. Eight (53%) samples from peripheral blood of 15 breast cancer patients with metastatic disease at diagnosis were positive for hMAM. Three (20%) samples from peripheral blood stem cells of 15 breast cancer patients for high dose chemotherapy were positive for hMAM. Conclusion : In contrast to healthy volunteers, hMAM transcripts were detected in the peripheral blood of breast cancer patients. The frequency of hMAM expression in peripheral blood was correlated with the clinical stages of disease, but, was not significant. The contamination of hMAM expressing cells in the stem cell pool warrants additional effective purging method before the transplantation. The clinical relevance of hMAM RT-PCR-based tumor cell detection in the peripheral blood of breast cancer patients should be further evaluated in prospective studies.

표면 결합모델을 이용한 알칼리 처리한 노간주나무의(BTJF)산/염기 그리고 카드뮴 결합특성 조사

민수홍,박재광 경희대학교 2004 環境硏究 論文集 Vol.13 No.-

A simple surface complexation model, the Constant Capacity Model (CCM), was used to describe the sorption of Cd^(2+) on a lignocellulosic which is base treated juniper fiber (BTJF). The binding of protons was studied by potentiometric titrations and conductiometric titrations. The BTJF was represented by two acid sites. From the acid/base titration data, total concentrations of these sites and H^(+) binding constants were obtained by using the NICA-Donnan model (The new Non-Ideal Competitive Adsorption). After identifying the stoichiometry of the surface complexes by potentiometric titrations of the Cd^(2+)/solid system using NICA-Donnan model, the surface complexation model was applied to describe Cd^(2+) binding by the BTJF using FITEQL 4.0. A single set of data was used; the model fit was good and covered a wide range of pH. The surface complexation constants derived from this single metal data set were then used to predict the sorption for increasing metal loading. The predictions agreed well with the experimental data showing the capability for the CCM surface complexation model to describe Cd^(2+) binding to the BTJF.