• Korean Journal of Pharmacognosy
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• v.7 no.1
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• pp.69-71
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• 1976

New or noteworthy medicinal plants were found in Korea, such as 1. Magnolia sieboldii K. KOCH f. dupliflora $C_{HI}$ (Magnoliaceae) 2. Peucedanum insolens $K_{ITAGAWA}$ (Umbelliferae) 3. Panax japonicus C.A. $M_{EYER}$ (Araliaceae) 4. Phytolacca americana L. (Phytolaccaceae) 5. Polygonum ellipticum $M_{IGO}$ (Polygonaceae).

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.37 no.4
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• pp.400-406
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• 2024

Next-generation wide-bandgap semiconductors such as SiC, GaN, and Ga2O3 are being considered as potential replacements for current silicon-based power devices due to their high mobility, larger size, and production of high-quality wafers at a moderate cost. In this study, we investigate the gradual modulation of chemical composition in multi-stacked metal oxide semiconductor thin films to enhance the performance and bias stability of thin-film transistors (TFTs). It demonstrates that adjusting the Ga ratio in the indium gallium oxide (IGO) semiconductor allows for precise control over the threshold voltage and enhances device stability. Moreover, employing multiple deposition techniques addresses the inherent limitations of solution-processed amorphous oxide semiconductor TFTs by mitigating porosity induced by solvent evaporation. It is anticipated that solution-processed indium gallium oxide (IGO) semiconductors, with a Ga ratio exceeding 50%, can be utilized in the production of oxide semiconductors with wide band gaps. These materials hold promise for power electronic applications necessitating high voltage and current capabilities.

• Journal of Korean Medical classics
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• v.21 no.3
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• pp.43-58
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• 2008

Wanghogo(王好古) is a prominent doctor in Geum-Won(金元) Dynasty. He is also the inheritor of Jangwonso(張元素) and Igo(李杲) in study, and studied "Hwangjenaegyeong(黃帝內經)", "Sanghallon(傷寒論)". So, he contributed to a later age. Although we have some researches of Wanghogo, but the researches in his books are insufficient as yet. More, the publication year of his books have some different views, so I tried to study this. By this study, We can understand that Wanghogo published "Uiruwonyung(醫壘元戎)" which is for exogenous febrile disease and miscellaneous diseases in general plan of twelve meridians in 1297, "Eumjeung-yangnye(陰證略例)" which is for harm and diagnosis and treatment of Eum syndromes of exogenous febrile disease in 1303, and "Tang-aekboncho(湯液本草)" which is for property and flavor and meridian tropism of Herb and five kind of flavor's tonification and reduction, the meaning of prescription, care of health by food, "Chasananji(此事難知)" which is for meridian, Jangbu(臟腑), pathology, pathogen, clinical distinction, medical care in 1308.

• Korean Journal of Pharmacognosy
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• v.4 no.2
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• pp.75-82
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• 1973

In Korea, two species of Ho-chang-Ho-chang $(Polygonum\;cuspidatum \;S_{IEB}.\;et\;Z_{UCC}.)$ and Wang-Ho-chang $(Polygonum \;sachalinense\;F_R.\;S_{CHM}.)$-had been identified, but the components of the leaves of Polygonum species growing in Korea had never been reported. The authors examined the anatomical characteristics of Korean Polygonum species, identified the flavonoids contained in their leaves and obtained the following results: Korean Polygonum species should be divided into three species: $Polygonum\;cuspidatum\;S_{IEB}.\;et\;Z_{UCC}.,\;P. \;sachalinense\;F_R.\;S_{CHM}\;and\;P.\;elliptica\;M_{IGO}$. The last one was illustrated in the report. P. cuspidatum contained reynoutrin and quercitrin, but no isoquercitrin could be identified. P. sachalinense also contained both reynoutrin and quercitrin. P. elliptica, which had never been studied, included the same flavonoids.

• Proceedings of the Materials Research Society of Korea Conference
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• 2012.05a
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• pp.63.1-63.1
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• 2012

In recent years, the functional inks for printed electronics that can be combined with a variety of printing techniques have attracted increasingly significant interest for use in low cost, large area, high performance integrated electronics and microelectronics. In particular, the development of solution-processable conductor, semiconductor and insulator materials is of great importance as such materials have decisive impacts on the electrical performance of various electronic devices, and, therefore, need to meet various requirements including solution processability, high electrical performance, and environmental stability. Semiconductor inks such as IGO, CIGS are synthesized by chemical solution method and microwave reaction method for TFT and solar cell application. Fine circuit pattern with high conductivity, which is valuable for flexible electrode for PCB and TSP devices, can be printed with highly concentrated and stabilized conductor inks such as silver and copper. Solution processed insulator such as polyimide derivatives can be use to all printed TFT device. Our research results of functional inks for printed electronics provide a recent trends and issues on this area.

• Korean Journal of Pharmacognosy
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• v.6 no.1
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• pp.1-4
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• 1975

Polygonum cuspidatum $S_{IEB}$. et $Z_{UCC}$. ('Ho-Jang'), P. sachalinense $F_R$. $S_{CHM}$. ('Wang Ho-Jang') and P. ellipticum $M_{IGO} ('Dung Geun Ib Ho-Jang') are the three species growing in Korea. Their rhizomes can be classified into two types: horizontal rhizome type ('Ho-Jang') and erect type ('Wang Ho-Jang' and 'Dung Geun Ib Ho-Jang'). The most of 'Ho-Jang' on Korean markets are the rhizome of 'Wang Ho-Jang' and only limited quantity of the rhizome of 'Ho-Jang' is used. 'Dung Geun Ib Ho-Jang' is a species transplanted from the China continent and is not collected for medicinal use. It is suggested that the name 'Ho-Jang Geun' (Reynoutriae Radix) should be corrected to 'Ho-Jang' (Reynoutriae Rhizoma=Polygoni Rhizoma).

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.345-345
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• 2014

최근 디스플레이 기술은 급속도로 발전해 가고 있다. 정보화 기술의 발전으로 언제 어디서나 쉽게 정보를 얻을 수 있는 유비쿼터스 시대로 접근하고 있으며, 휴대가 간편하고 이동성을 가진 휴대용 기기가 인기를 끌고 있다. 이에 따라 더 얇고 더 가벼우며 휴대하기 쉬운 디스플레이가 요구 되고 있고, 더 나아가 떨어뜨려도 깨지지 않고 유연하며, 디자인 변형이 자유로우며, 때론 종이처럼 접거나 휘어지거나 두루마리처럼 말을 수 있는 이른바 "플렉서블 디스플레이"에 대한 필요성이 점점 대두되고 있다. 이러한 첨단 디스플레이의 핵심 소자 중 하나는 산화물 박막 트랜지스터 이다. 산화물 반도체는 넓은 밴드갭을 가지고 가시광선 영역에서 투명하며, 높은 이동도를 가지고 있어 차세대 평판디스플레이, 투명디스플레이 및 플렉서블 디스플레이용 박막트랜지스터(TFT)를 위한 채널층으로써 광범위하게 연구되고 있다. 하지만 현재 대부분의 산화물 박막 트랜지스터 제조 공정은 고온에서의 열처리를 필요로 한다. 고온에서의 열처리 공정은 산화물 박막의 제조 공정 단가를 증가시키는 문제점이 있으며, 산화물 박막이 형성되는 기판의 녹는점이 낮은 경우에는 상기 기판의 변형을 가져오므로(예를 들면, 플라스틱 기판, 섬유 기재 등), 상기 산화물 박막이 적용되는 기판의 종류에 제한이 생기는 문제점이 있었다. 이에 플렉시블 디스플레이 등을 위해서는 저온공정이 필수로 선행 되어야 한다. 산화물 TFT는 당초, ZnO계의 재료가 연구되었지만 2004년 말에 Hosono 그룹이 Nature지에 "IGZO (In, Ga, Zn, O)"을 사용한 TFT를 보고한 이후 IGZO, IZO, ISZO, IYZO, HIZO와 같은 투명 산화물반도체가 TFT의 채널물질로써 많이 거론되고 있다. 그 중에서 인듐갈륨 산화물(IGO)는 삼성분계 n-형 산화물 반도체이고, 채널 이동성이 좋고 광투과도가 우수해 투명 TFT에 매우 유용하게 사용할 수 있다. 이 실험에서 우리는 인듐갈륨 산화물 박막 및 트랜지스터 특성 연구를 진행하였다. 인듐갈륨 산화물 박막은 상온에서 rf-magnetron sputtering법을 사용하여 산소분압 1~10%에서 증착 되었다. 증착된 인듐갈륨 산화물 박막은 cubic $In_2O_3$ 다결정으로 나타났으며, 2차상은 관찰 되지 않았다. 산소분압이 10%에서 1%로 변함에 따라 박막의 전도도는 $2.65{\times}10^{-6}S/cm$에서 5.38S/cm 범위에서 조절되었으며, 이를 바탕으로 인듐갈륨 박막을 active층으로 사용하는 bottom gate 구조의 박막트랜지스터를 제작 하였다. 인듐갈륨산화물 박막트랜지스터는 산소분압 10%에서 on/off 비 ${\sim}10^8$, field-effect mobility $24cm^2/V{\cdot}S$를 나타내며 상온에서 플렉서블용 고 이동도 소자 제작의 가능성을 보여준다.

• Advances in nano research
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• v.9 no.1
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• pp.25-32
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• 2020

In this work, we report the use of caffeine as an alternative source of nitrogen to successfully dope graphene (quaternary 400.6 eV and pyridinic at 398 eV according XPS), as well as the growth of silver nanowires (in-situ) in the surface of nitrogen doped graphene (NG) sheets. We used the improved graphene oxide method (IGO), chemical reduction of graphene oxide (GOx), and impregnation with caffeine as source of nitrogen for doping and subsequently, silver nanowires (NW) grow in the surface by the reduction of silver salts in the presence of NG, achieving a numerous of growth of NW in the graphene sheets. As supporting experimental evidence, the samples were analyzed using conventional characterization techniques: SEM-EDX, XRD, FT-IR, micro RAMAN, TEM, and XPS.

• Journal of the korean society of oceanography
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• v.32 no.4
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• pp.202-207
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• 1997

Species composition and abundance of fish larvae were studied from May 1988 through August 1989 in the Han River Estuary and adjacent Kyunggi Bay, Korea. Of 23 taxa identified, Coilia nasus, llisha elongata, and Cyprinidae spp. were dominated. Maximum density (3,5771/1,000m)$^3$ occurred in August 1988 and minimum (3/1,m$^3$) in February 1989. O1igo- ormesohaline species dominated during ebb tides while polyhaline species during flood tides. Correspondence analysis revealed that three distinctive species groups; oligohaline species, Coilia nasus, Ilisha elongata and Cyprinidae spp., which dominated at both channels of Kwanghwa Island (stations 1, 2), mesohaline species, Sardinella zunasi and Gobiidae spp., at the mouth of Yeomha Channel (station 3), and polyhaline species, Engraulis japonicus and Syngnathus schlegeli, in the middle of Kyunggi Bay (station 4). Coilia nasus was the most abundant species and reported first time in the study area. Given the species composition and density of fish larvae, the Han River Estuary is considered to be a major spawning and nursery ground for brackish water species such as Coilia nasus, Ilisha elongata and some Cyprinidae spp.

• International Journal of Computer Science & Network Security
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• v.22 no.4
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• pp.261-273
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• 2022

Over the last decade, the scientific community has been actively developing technologies for automated software bug fixes called Automated Program Repair (APR). Several APR techniques have recently been proposed to effectively address multiple classroom programming errors. However, little attention has been paid to the advances in effective APR techniques for software bugs that are widely occurring during the software life cycle maintenance phase. To further enhance the concept of software testing and debugging, we recommend an optimized automated software repair approach based on hybrid technology (OAPR-HOML'1). The first contribution of the proposed OAPR-HOML'1 technique is to introduce an improved grasshopper optimization (IGO) algorithm for fault location identification in the given test projects. Then, we illustrate an opposition learning based artificial neural network (OL-ANN) technique to select AST node-level transformation schemas to create the sketches which provide automated program repair for those faulty projects. Finally, the OAPR-HOML'1 is evaluated using Defects4J benchmark and the performance is compared with the modern technologies number of bugs fixed, accuracy, precession, recall and F-measure.