• 한국약용작물학회지
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• 제20권6호
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• pp.487-492
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• 2012

Damages of medicinal crops by thrips and identification of thrips species were investigated by periodic surveys on major medicinal crops, Platycodon grandiflorum, Schizandra chinensis, Codonopsis lanceolata, Lycium chinense, Bupleurum falcatum, Ledebouriella seseloides, Angelica gigas, Glycyrrhiza uralensis, Liriope platyphylla, Atractyloides sp., once or twice a month in Suwon, Eumseong, Jecheon, Pyeongchang, Chyungyang from May to October in 2012. Thrips and their damages were found at all of the medicinal crops investigated, mostly occurring at early growing stages of each medicinal crop and causing apical meristem region withered, thereby inhibiting the growth of plants. For species identification of thrips collected from each medicinal crops, DNA from each individual was extracted and ITS2 and COI regions were amplified by PCR. As a result, Frankliniella intonsa, Thrips tabaci, and Megalurothrips distalis have been identified as dominant species on medicinal crops in open field, whereas Frankliniella occidentalis was restricted to Lycium chinense in which protected cultivation. This study suggests that the occurrence of thrips species on medicinal crops seems to be affected by host specificity and environmental factors such as cultivation types.

• 한국지능시스템학회논문지
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• 제16권5호
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• pp.544-549
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• 2006

본 논문은 인간의 보조 역할을 하기 위해 자율적인 명령을 내리고 사용자가 직접 제어할 수 있는 지능형 주행 판단 시스템(Judgment System for Intelligent Movement; JSIM)에 대한 연구이다. 본 논문에서는 제어 대상은 이동 로봇으로 한정한다. 이동 로봇은 지능형 주행 판단 모듈을 휴대한 사용자에게 영상정보와 초음파 센서 정보를 제공하고 가이드 역할을 수행한다. 그리고 PDA와 센서박스로 구성된 지능형 주행 판단 시스템은 이동로봇으로부터 얻은 정보와 사용자 명령을 입력으로 사용하는 소프트 컴퓨팅 기법을 이용하여 이동로봇의 속도와 방향을 결정하고 다양한 기능을 수행하도록 로봇을 원격으로 제어한다. 본 논문에서는 몸에 착용하고 주변장치들과 통신을 하며 지능적 판단을 할 수 있는 지능형 주행 판단시스템을 구성하고 실제 환경에서 지능적 판단 알고리즘 적용과 이동로봇을 제어하는 시스템을 구현하여 제안한 시스템의 실현 가능성을 검증한다. 지능 알고리즘은 계층적 퍼지 구조와 신경망을 융합한 구조이다.

• 대한금속재료학회지
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• 제48권10호
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• pp.951-956
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• 2010

This study examined the effect of copper and sulfuric acid concentrations on the surface morphology and physical properties of copper plated on a polyimide (PI) film. Electrochemical experiments with SEM and a four-point probe were performed to characterize the morphology and mechanical characteristics of copper electrodeposited in the composition of an electrolyte. The resistivity and peel strength were controlled using a range of electrolyte compositions. A lower resistivity and high flexibility were obtained when an electrolyte with 20 g/l of copper was used. However, a uniform surface was obtained when a high current density that exceeded $20mA/cm^2$ was applied, which was maintained at copper concentrations exceeding 40 g/l. Increasing sulfuric acid to >150 g/l decreased the peel strength and flexibility. The lowest resistivity and fine adhesion were detected at a $Cu^{2+}:H_2SO_4$ ratio of 50:100 g/l.

• 대한금속재료학회지
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• 제49권8호
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• pp.657-663
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• 2011

This study represents the results of the peel strength and surface morphology according to the preprocessing times of polyimide (PI) in a Cu/Ni/PI structure flexible copper clad laminate production process based on the polyimide. Field emission scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to analyze the surface morphology, crystal structure, and interface binding structure of sputtered Ni, Cu, and electrodeposited copper foil layers. The surface roughness of Ni, Cu deposition layers and the crystal structure of electrodeposited Cu layers were varied according to the preprocessing times. In the RF plasma times that were varied by 100-600 seconds in a preprocessing process, the preprocessing applied by about 300-400 seconds showed a homogeneous surface morphology in the metal layers and that also represented high peel strength for the polyimide. Considering the effect of peel strength on plastic deformation, preprocessing times can reasonably be at about 400 seconds.

• 한국육종학회지
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• 제40권3호
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• pp.223-227
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• 2008

In rice, tillering is an important trait determining yield. To study tillering at the agricultural and molecular aspects, we have examined a spontaneous rice mutant that showed reduction in the number of culms. The mutant was derived from a $F^6$ line of the cross of Junambyeo*4 / IR72. It could produce, on average, 4 tillers per hill in the paddy field while wild-type plants usually have 15. Except the reduced culm numbers, they also show pale green phenotypes. The phenotypes of this mutant were co-segregated as the monogenic Mendelian ratio (${\chi}^b=0.002$, p=0.969). In order to locate a gene responsible for the rcn phenotype, the mutant with the japonica genetic background was crossed with Milyang21 of the indica background. Bulked segregant analysis was used for rapid determination of chromosomal location. Three SSR markers (RM551, RM8213, and RM16467) on chromosome 4 were genetically associated with the mutant phenotype. Each of the 217 $F_2$ plants was genotyped with simple sequence length polymorphisms. The data showed that RM16572 on chromosome 4 was the closest marker that showed perfect co-segregation among the $F_2$ population. We suggest the new rcn gene studied here name as $rcn10^t$ because there was no report which exhibit a rcn phenotype with a pleiotropic effect of pale green (chlorophyll deficiency), and mapped at same position on chromosome 4.

• 한국전기전자재료학회논문지
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• 제32권6호
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• pp.477-482
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• 2019

This study investigated the influence of the viscoelastic property of slag when producing glass fiber, MFS631 with 60% of manganese slag, 30% of steel slag, and 10% of silica stone. To fabricate the MFS631 glass bulk, slag materials were placed in an alumina crucible, melted at $1,550^{\circ}C$ for 2 h, and then annealed at $600^{\circ}C$ for 2 h. It was found that glass is non-crystalline through X-ray diffraction analysis. MFS631 fiber was produced at speed in the range of 100~300 rpm at $1,150^{\circ}C$. The loss modulus (G") and storage modulus (G') of the produced glass fiber were evaluated at high temperatures. G' and G" of MFS631 were greater than $893^{\circ}C$, and the modulus value was 136,860 pa. This is similar to the results of a general E-glass fiber graph. Therefore, it was concluded that its spinnability is similar to that of E-glass fiber; therefore, it can be commercialized.

• 임상간호연구
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• 제25권1호
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• pp.1-14
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• 2019

Purpose: This study was done to develop a evidence-based guideline for pain assessment and management in Korea by adapting previously developed pain guidelines. Methods: The guideline adaptation process was conducted using 24 steps according to the guideline adaptation manual developed by Hospital Nurses Association in 2012. Results: The newly developed pain management guideline consisted of 9 domains and 234 recommendations. The number of recommendations in each domain was: 13 general instruction items, 51 pain assessments, 14 pain interventions, 66 pharmacological interventions for acute pain, 41 pharmacological interventions for chronic cancer pain, 35 pharmacological interventions for chronic noncancer pain, 21 non-pharmacological interventions, 2 documentations, 10 nursing education items, for pain. Conclusion: The findings suggest that the new pain management guideline can be used to address pain in hospital settings.

• 동의신경정신과학회지
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• 제30권1호
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• pp.13-21
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• 2019

Objectives: To investigate the research trends of qigong interventions to make influence on performance enhancement. Methods: Korean databases were searched for papers related to studies of qigong interventions to assist subjects perform better. Results: Twelve articles published in Korean Journals from 2000 to 2017 were reviewed. Among the retrieved papers, eight were applied with breathing exercises, including Dan-jeon breathing training, one applied with brain breathing meditation with DoIn exercise, one applied with qigong meditation, one applied with qi-training, and one applied with brain breathing training. RoBANS was used for assessment. The quality of selected articles was generally low. 10 of the 12 articles on qigong reported that experimental group showed statistically significant increase of performance enhancement both directly and indirectly. Conclusions: Reviewing 12 articles, this study established that qigong interventions might be beneficial for enhancing performance especially in sports. However, more scientifically designed study on qigong therapy are needed to prove the efficacy and effectiveness.

• 한방안이비인후피부과학회지
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• 제34권4호
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• pp.24-36
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• 2021

Objectives : This study was conducted to confirm the anti-oxidative effect of Chungpyesagan-tang(CPSGT) extract. Methods : In this study, MTT assay was performed to confirm cell viability, and DPPH and ABTS were performed to confirm radical scavenging ability. The ROS scavenging ability and the protective effect against DNA damage were confirmed by 2,7-dichlorofluorescin diacetate(DCF-DA) and 4',6-diamidino-2-phenylindole(DAPI) staining and comet assay. mRNA expression of Heme oxygenase-1(HO-1) was measured by real-time PCR, and expression of HO-1 and Kelch-like ECH-associated protein 1(Keap1) proteins was measured by western blot. Results : CPSGT was not cytotoxic at 50-400㎍/㎖. The radical scavenging activity was increased, and the ROS scavenging activity and the protective effect against DNA damage were increased compared to the LPS-treated group. The mRNA expression and protein expression of HO-1 were increased in a concentration-dependent manner. The protein expression level of Keap1 was decreased in a concentration-dependent manner. Conclusion : This suggests that CPSGT has an antioxidant effect and can be used as a potential material for skin diseases.

• 정보보호학회논문지
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• 제19권4호
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• pp.29-39
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• 2009

통신망을 통하여 자동적으로 확산되는 악성 프로그램인 웜에 대응하기 위하여, 웜 관련 패킷들을 분석하여 시그니처를 생성하여 웹을 탐지하는 방법들이 많이 사용되고 있다. 그러나 이런 시그니처-기반 탐지 기법을 회피하기 위하여, 변형된 폴리모픽 형태의 공격 코드 사용이 점차 증가하고 있다. 본 논문에서는 폴리모픽 공격 코드의 복호화 루틴을 탐지하기 위한 새로운 정적 분석 방법을 제안한다. 제안된 방법은 통신망 플로에서 폴리모픽 공격 코드에 함께 포함되어 암호화된 원본 코드를 복호화하는 역할을 수행하는 코드 루틴을 탐지한다. 실험 결과를 통하여 제안된 방법이 정적 분석 방지 기법들이 사용된 폴리모팍 코드들도 탐지할 수 있는 것을 보여준다. 또한 처리 성능에서 에뮬레이션 기반 분석 방법보다 효율적인 것으로 나타났다.