벌독으로 인한 혈청병 양상의 두드러기 및 맥관부종 치험 1례

김정현,강다혜,김지영,임해원,김자헌,권강,Kim, Jung-Hyun,Kang, Da-Hae,Kim, Jee-Young,Lim, Hae-Won,Kim, Ja-Heon,Kwon, Kang 대한한방안이비인후피부과학회 2011 한방안이비인후피부과학회지 Vol.24 No.3

Objective : This study was performed to prove the effect of the oriental medical treatments on urticaria and angioedema caused from serum sickness reaction by bee venom. Method : We treated one case of urticaria and angioedema with oriental medical treatments such as 8 constitution acupuncture, herbal medicine, venesection therapy and facial pack therapy. We took pictures through the treatment to evaluate the improvement. Six items, itching, burning sensation, pain, wheal, redness, edema were used to diagnose urticaria and angioedema. Result & Conclusion : After treatments the urticaria and angioedema were improved. The symptom of itching, heating, pain, wheal, redness of whole body and facial edema disappeared.

색인 구조 예측을 통한 이동체의 지연 다량 삽입 기법

김정현,박순영,장용일,김호석,배해영,Kim, Jeong-Hyun,Park, Sun-Young,Jang, Hyong-Il,Kim, Ho-Suk,Bae, Hae-Young 한국공간정보시스템학회 2005 한국공간정보시스템학회 논문지 Vol.7 No.3

본 논문은 이동체의 잦은 갱신에 의해 발생하는 색인 재구성에 대한 비용을 줄이기 위해 이동체의 지연 다량 삽입 기법을 제안한다. 기존 이동체 색인에 대한 연구는 주로 색인 구성 후에 발생하는 질의 처리 효율성에 초점을 두었다. 이들은 이동체 데이터의 갱신 연산에 의한 색인 재구성에 대한 디스크 접근 오버헤드를 거의 고려하지 않았다. 이러한 이동체 데이터의 갱신 연산에 대한 비용을 줄이기 위해 다량 삽입 기법과 여러 색인이 제안되었다. 하지만 제안된 기법들은 매우 가변적이고 대량인 데이터를 효율적으로 처리하는데 많은 디스크 I/O 비용을 필요로 한다. 본 논문에서는 빠른 데이터 생성 속도에 적합하도록 디스크 접근 오버헤드를 고려해서 R-트리를 관리할 수 있는 현재색인에 대한 다량 삽입 기법을 제안한다. 이 기법에서는 다차원 색인 구조에서의 다량 삽입 기법을 위한 버퍼링 기법을 사용한다. R-트리의 단말 노드 정보를 관리하는 보조 색인을 추가하여 노드의 분할과 합병을 예상한다. 또한 연산을 종류에 따라 분류하여 불필요한 삽입과 삭제 연산을 줄인다. 노드의 변환를 최소화하는 방향으로 이동 객체의 처리 순서를 정하여 데이터 갱신에 따른 노드의 분할과 합병을 최소화한다. 실험을 통해 제안한 기법을 이용한 다량 삽입 기법이 기존의 삽입 기법들보다 색인의 갱신 비용을 감소시키는 것을 알 수 있다. This paper presents a bulk insertion technique for efficiently inserting data items. Traditional moving object database focused on efficient query processing that happens mainly after index building. Traditional index structures rarely considered disk I/O overhead for index rebuilding by inserting data items. This paper, to solve this problem, describes a new bulk insertion technique which efficiently induces the current positions of moving objects and reduces update cost greatly. This technique uses buffering technique for bulk insertion in spatial index structures such as R-tree. To analyze split or merge node, we add a secondary index for information management on leaf node of primary index. And operations are classified to reduce unnecessary insertion and deletion. This technique decides processing order of moving objects, which minimize split and merge cost as a result of update operations. Experimental results show that this technique reduces insertion cost as compared with existing insertion techniques.

Capillary electrophoresis(CE)를 이용한 천궁의 원산지 판별

김정현,김은영,정경숙,류미라,Kim, Jung-Hyun,Kim, Eun-Young,Chung, Kyung-Sook,Rhyu, Mee-Ra 한국응용생명화학회 2003 한국농화학회지 Vol.46 No.4

최근 수입자유화 이후 중국산 한약재의 수입이 증가하면서 수입산과 국산의 명확한 판별이 요구되고 있는 가운데 수입이 급증한 품목 중 하나인 천궁을 선택, CE를 이용한 분석조건을 확립하고 원산지판별에의 적용가능성을 검토하였다. 분석을 위한 지표물질의 추출에는 30% ethanol 을 사용하였고, $50\;{\mu}m\;I.D.{\times}27\;cm$ 길이의 uncoated fused-silica capillary를 이용하여 $40^{\circ}C$, 10 kV로 200 nm에서 분석하였다. 0.1 M phosphate buffer(pH 2.5)에 40% methanol과 15 mM IDA를 첨가하여 분석 buffer로 사용하였고, 국산시료는 5초, 수입산은 2초 동안 pressure injection하였다. 분석 시 시료 injection 전에 증류수로 4분간 흘려주고 분석 buffer로 10분간 평형화시켰으며 분석이 끝난 후 0.1M phosphoric acid와 1N sodium hydroxide를 각각 4분씩 흘려 분석의 재현성을 높이고자 하였다. 이상의 조건으로 시중에 유통되는 국내산(62점)과 수입산(51점) 천궁을 분석한 결과 전체 peak에 대한 구성비율이 서로 차이를 나타내는 peak LW-1과 peak LW-5(용출시간 약 11분, 14분)를 원산지 판별에 적용할 수 있는 peak로 도출하였으며, 이 peak를 이용한 국산 및 수입산 천궁의 원산지 판별율은 국산이 약 65%(총 62점 중 40점을 바르게 판별), 수입산은 약 63%(총 51점 중 32점을 바르게 판별)로 나타났다. Optimal extraction, separation and capillary rinsing conditions for capillary electrophoresis (CE) were established to discriminate the geographical origin of ligusticum root (Ligusticum wallichii) using 113 samples (domestic sample n = 62, foreign sample n = 51). Ligusticum root was extracted with 30% ethanol and separated on a uncoated fused-silica $(50\;{\mu}m{\times}27\;cm)$ capillary. Conditions for optimal analysis include: temperature, $40^{\circ}C$; voltage, 10 kV; and pressure injection time, domestic and foreign samples were 5 sec and 2 sec, respectively. The optimal separation buffer was 0.1 M phosphate buffer (pH 2.5) containing 15 mM iminodiacetic acid with 40% methanol. Under the optimal conditions established for CE, the ratio of specific peak area (peak LW-1) to other peak area (peak LW-5) was effective in discrimination geographical origin of ligusticum root. The mean accuracy for correct discrimination of geographical origin of domestic and foreign ligusticum roots were 65% and 63%, respectively.

전기방사로 합성된 산화물 나노섬유의 조성 및 결정화도에 따른 (Ga_1-xZn_x)(N_1-xO_x) 나노섬유의 형상 제어 연구

김정현,오승탁,이영인,Kim, Jeong Hyun,Oh, Sung-Tag,Lee, Young-In 한국분말재료학회 (*구 분말야금학회) 2021 한국분말재료학회지 (KPMI) Vol.28 No.3

The (Ga_1-xZn_x)(N_1-xO_x) solid solution is attracting extensive attention for photocatalytic water splitting and wastewater treatment owing to its narrow and controllable band gap. To optimize the photocatalytic performance of the solid solution, the key points are to decrease its band gap and recombination rate. In this study, (Ga_1-xZn_x)(N_1-xO_x) nanofibers with various Zn fractions are prepared by electrospinning followed by calcination and nitridation. The effect of the composition and crystallinity of electrospun oxide nanofibers on the morphology and optical properties of the obtained solid-solution nanofibers are systematically investigated. The results show that the final shape of the (Ga_1-xZn_x) (N_1-xO_x) material is greatly affected by the crystallinity of the oxide nanofibers before nitridation. The photocatalytic properties of (Ga_1-xZn_x)(N_1-xO_x) with different Ga:Zn atomic ratios are investigated by studying the degradation of rhodamine B under visible light irradiation.

상피하 결합조직 이식편을 이용한 치근 피개술

김정현,허익,권영혁,박준봉,정종혁,Kim, Jeong-Hyun,Herr, Yeek,Kwon, Young-Hyuk,Park, Joon-Bong,Chung, Jong-Hyuk 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.1

Purpose: One of the main objectives of periodontal reconstructive surgery is the coverage of exposed roots that occur due to gingival recession. and Aestheic concerns are usually the reason to perform root coverage procedure. This case report was performed to evaluate the effect of root coverage using subepithelial connective tissue graft(SCTG) on Miller's Class I marginal tissue recession. Materials and Methods: One patient, with two Miller's class I marginal tissue recession on both maxiallay canines, was treated with root coverage using SCTG (modified Nelson's technique). At baseline, the following measurements were recorded: 1) recession depth; 2) width of keratinized giniga. At 9, 10 months post-surgery, all clinical measurements were repeated. Result: 1) The mean root coverage from baseline to 9, 10 months post-surgery was 92.3%. 2) The mean recession depth decreased from 6.5 mm to 0.5 mm. 3) The mean width of keratinized gingiva increased from 1.25 mm to 3.5 mm. Conclusion: Within the above results, root coverage using SCTG is an effective procedure to cover Miller's class I marginal tissue recession defect. Also, patient with aesthetic concern could be satisfied with this result.

초음파 분무 열분해와 화학적 변환 공정을 이용한 (GaN)_1-x(ZnO)_x 나노입자의 합성과 광학적 성질

김정현,류철희,지명준,최요민,이영인,Kim, Jeong Hyun,Ryu, Cheol-Hui,Ji, Myungjun,Choi, Yomin,Lee, Young-In 한국분말재료학회 (*구 분말야금학회) 2021 한국분말재료학회지 (KPMI) Vol.28 No.2

In this study, (GaN)_1-x(ZnO)_x solid solution nanoparticles with a high zinc content are prepared by ultrasonic spray pyrolysis and subsequent nitridation. The structure and morphology of the samples are investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The characterization results show a phase transition from the Zn and Ga-based oxides (ZnO or ZnGa₂O₄) to a (GaN)_1-x(ZnO)_x solid solution under an NH3 atmosphere. The effect of the precursor solution concentration and nitridation temperature on the final products are systematically investigated to obtain (GaN)_1-x(ZnO)_x nanoparticles with a high Zn concentration. It is confirmed that the powder synthesized from the solution in which the ratio of Zn and Ga was set to 0.8:0.2, as the initial precursor composition was composed of about 0.8-mole fraction of Zn, similar to the initially set one, through nitriding treatment at 700℃. Besides, the synthesized nanoparticles exhibited the typical XRD pattern of (GaN)_1-x(ZnO)_x, and a strong absorption of visible light with a bandgap energy of approximately 2.78 eV, confirming their potential use as a hydrogen production photocatalyst.

한국인과 미국인의 생애주기별 칼슘섭취 현황 비교

유아름 ( Areum Yu ),양윤정 ( Yoon Jung Yang ),정사랑 ( Sa Rang Jeong ),김지혜 ( Ji Hye Kim1 ),김유진 ( You Jin Kim ),권오란 ( O Ran Kwon ),오세영 ( Se Young Oh ),김정현 ( Jung Hyun Kim ) 대한영양사협회 2013 대한영양사협회 학술지 Vol.19 No.1

Calcium intake has been insufficient in all age groups in previous Korean national surveys. This study was conducted to investigate calcium intake in Korean and American populations at different ages. We analyzed two national survey data: the 2007∼2009 Korean National Health and Nutrition Examination Survey (KNHANES) and the 2007∼2008 National Health and Nutrition Examination Survey (NHANES). Statistically, survey procedures were applied using the weight, cluster, and strata variables. The mean calcium intake of Koreans at ages of 1∼2 y, 3∼5 y, 6∼11 y, 12∼18 y, 19∼64 y, and 65+y was lower than American populations at those ages. The sufficient proportions based on Korean Estimated Average Requirement (EAR) of 1∼2 y, 3∼5 y, 6∼11 y, 12∼18 y, 19∼64 y, and 65+y in Koreans were 45.5%, 33.1%, 24.3%, 16.6%, 32.7%, and 19.0%. While the sufficient rates based on American EAR of 1∼3 y, 4∼8 y, 9∼13 y, 14∼18 y, 19∼30 y, 31∼50 y, 51∼70 y, and 71+y in US population were 88.5%, 54.4%, 35.2%, 35.8%, 55.3%, 55.2%, 40.6%, and 24.5%. Overall, the major foods contributing to calcium intakes in Koreans were milk, baechukimchi, and anchovies, whereas, milk products, pasta, or bread were major contributions to calcium in American populations. The calcium supplement intakes in the American population were 5.5 mg (1∼2 y), 15.5 mg (3∼5 y), 13.9 mg (6∼11 y), 35.7 mg (12∼18 y), 150.3 mg (19∼64 y) and 334.4 mg (≥65 y). These results suggest that Korean adolescents and older adults are the most insufficient in dietary calcium intakes among Koreans. In order to accurately estimate calcium intakes in Korean populations, calcium supplements and calcium-fortified foods should be considered.

영 케어러 대응에 대한 국가 간 비교연구: 영국, 호주, 스웨덴을 중심으로

김정현 ( Kim Jung-hyun ),박선영 ( Park Sun-young ) 동의대학교 지방자치연구소 2023 공공정책연구 Vol.40 No.1

2022년 정부는 범부처 과제로 ‘가족돌봄청년 지원 방안’을 발표하였다. 그러나 이와 관련된 국내 연구는 많지 않다. 본 연구는 돌봄의 역할을 수행 중인 우리나라 아동·청소년 지원의 방향성을 도출하고자 영 케어러 대응에 관한 해외 선진사례를 분석하였다. 영국, 호주, 스웨덴 사례를 비교한 결과, 각국은 영 케어러 개념, 인식, 법령, 정책 및 서비스 등에 차이가 있으나 세 나라 모두 영 케어러의 나이는 아동·청소년 나이와 유사하다. 영 케어러에 대한 세 나라의 정책 방향 중 공통점은 영 케어러 개인뿐만 아니라 가족 전체를 개입 대상으로 보는 것이다. 영 케어러에 대한 대응 초기 단계인 우리나라는 해외사례를 참고삼아 가족돌봄청년에 대한 정의와 역할에 대한 사회적 합의를 전제로 정책 방향을 설정하여야 할 것이다. The Korean government announced a plan to support young carers in 2002. However, literature on young people caring for family members in Korea is scarce. This study compared advanced overseas cases that dealt with young carers in order to derive the implications of setting the policy direction for young carers in Korea. The results of comparative analyses in the UK, Australia, and Sweden are as follows: there are differences in the definition, awareness, legislation, policies, and services of young carers, but the age range of young carers are similar to that of children. The policy direction in these countries for young carers is to consider the whole family as the target of intervention, not just the individual young carer. The Korean government, which is in the early stage of responding to young carers, needs to develop the direction of policy for young carers according to the social consensus on the definition and role of the population.

용매에 따른 MWNT의 분산특성과 제조된 PU/MWNT 필름의 전기적·물리적 특성 분석

김정현(Jeong Hyun Kim),마혜영(Hye Young Ma),양성용(Sung Yong Yang),김승진(Seung Jin Kim) 한국염색가공학회 2012 韓國染色加工學會誌 Vol.24 No.1

장거리 항공 여행이 혈청 점도 및 Prothrombin Time에 미치는 영향

김정현(Jeong-Hyun Kim),조준효(Joon-Hyo Cho),남윤영(Yun-Young Nam),이혜선(Hea-Sun Lee),김경채(Kyung-Chae Kim),노상철(Sang-Chul Roh),박노원(No-Won Park),이원근(Won-Keun Lee) 한국항공우주의학협회 2002 항공우주의학회지 Vol.12 No.3