성장기 참전복의 배합사료 평가

박흠기,김경덕,이상민 강릉대학교동해안지역연구소 1999 東海岸硏究 Vol.10 No.2

전복의 영양소 요구에 관한 연구 결과들을 검색하면서 실험 배합사료를 기존의 수입 배합사료와 비교하기 위하여 실험 배합사료 2종, 수입사료 2종 및 천연먹이(미역)를 선정하여 평균체중 2.6g 전후의 참전복 (1년생)을 구입하여 각 사료마다 3반복으로 15주간 사육 실험하였다. 생존율은 모든 실험구에서 95% 이상으로 양호하였으며, 실험구간에 유의한 차이는 없었다 (P>0.05). 최종 평균체중은 미역 공급구가 가장 낮아 실험 배합사료 및 상품사료보다 유의하게 낮았으며(P<0.05), 실험 배합사료와 상품사료 공급구간에는 차이가 없었다 (P>0.05). 가식부 중량 및 패각성장의 변화도 이와 유사한 경향을 보였다. 실험종료시 전복 가식부의 수분함량은 실험구간에 유의적인 차이는 없었다. (P>0.05) 가식부 단백질 함량은 두 실험 배합사료 공급구가 상품사료보다 유의하게 높았다. (p<0.05). 실험 배합사료 및 상품사료 공급구의 지질 함량은 미역 공급구가 가장 낮은 값을 보였고 (P<0.05), 실험 배합사료 공급구의 지질 함량은 상품사료보다 높은 값을 보였다.(P<0.05). 실험 배합사료구의 성장 효과가 수입 상품 배합사료와 차이가 없는 것으로 나타나 이 배합사료 조성비는 상품 사료의 배합비로 사용이 가능 할 것으로 기대된다. A feeding experiment was conducted to evaluate experimental and commercial diets for growing abalone(Haliotis discus hannai). Three replicate groups of the abalone average weighing 2.6 g were fed two experimental formulated diets containing 33.5% protein and two commercial diets containing 34.2-36.5% protein for 15 weeks. Experimental formulated diets with 20% fish meal and 20-23% soybean meal as protein sources were included. In addition, these experimental and commercial diets were compared with natural food (Undaria). No significant (P>0.05) differences were found among abalone fed the experimental and commercial diets in survival rate, final average weight, shell length and body weight/shell length ratio. Weight and shell growth of abalone fed the natural food (Undaria) were significantly lower than those of abalone fed the experimental and/or commercial formulated diets (P<0.05). These data indicate that experimental formulation used in this study could be used as a practical diet and dietary value of Undaria is lower than formulated diets.

균열밀도에 따른 R·C 슬래브 교량의 내하력 평가

박길현,양승현,황선하,정경덕 朝鮮大學校 建設技術硏究所 2003 建設技術硏究 Vol.23 No.1

Through the exterior features on reinforced concrete slab, crack density and crack originate deflections ratio crack density, decrease percentage of load carrying capacity, crack originate deflections ration and decrease percentage of load carrying capacity were statistically analyzed. Crack density, crack originate deflections ratio and decrease percentage of load carrying capacity are very closely related each other with 0.724, 0.821 and 0.317 of correlation coefficient within 95% of mind level. However, the correlation between crack originate deflections ratio and decrease percentage of load carrying capacity was low. Through the regression equation curve method in which crack density selected as independent variable, crack originate deflections ratio and decrease percentage of load carrying capacity as dependent variable, regression equations were presumed. Equations exist in mind level range of F(0.05, S-curve showed the highest, conformance with 79.5%, 72.2%. The regression equation between CRD or LCCD and CD was also shown. The overall judgement of load carrying capacity of bridges can be possible through the moreover investigation of crack density, the time needed precision could be valuable data for lower maintenance cost, the degree of deterioration of bridges and safety judgement.

Cerebrovascular Complications of Rhinocerebral Mucormycosis

김용재,박기덕,최경규,구혜수 이화여자대학교 의과대학 2003 EMJ (Ewha medical journal) Vol.26 No.2

모균증은 진균 감염증의 하나로 급성으로 진행되며 사망률이 높은 질환이다. 다양한 임상 양상으로 나타나며 두부 모균증이 가장 흔한 형태이다. 두부 모균증의 임상 경과는 감염의 해부학적 위치에 따라 두통, 안면 부종, 압통부터 안구 돌출, 안구 마비, 시력 소실 등 다양하게 나타난다. 모균증은 혈관계를 잘 침범하며, 두부 모균증의 경우 해면 정맥동의 침범뿐 아니라 아주 드물게 내 경동맥이나 두강 내 혈관을 침범하는 경우도 있다. 저자들은 뇌혈관 질환이 동반된 두부 모균증의 드문 합병증 3예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

뇌졸중 환자의 상지 재활 치료에 있어서 건측 억제 유도 기법의 적용 가능성

김진섭,김경,이지연,박진현,전덕훈,최윤희 대구대학교 특수교육재활과학연구소 2010 再活科學硏究 Vol.28 No.1

본 연구의 목적은 뇌졸중 편마비 환자의 재활을 위하여 강제유도치료(Constraint Induced movement Therapy: CIMT)의 잠재성을 조사하는 것이다. 강제유도치료는 학습된 불용과 피질 재배치 현상을 근거로 개발된 운동 중재로 임상적으로 뇌졸중으로 인한 편마비 환자뿐만 아니라 다양한 병인을 가진 환자들의 치료에 이용되고 있다. 최근 회복시기에 집중적인 치료를 받지 못하는 뇌졸중 환자들을 위한 상지 기능의 향상과 학습된 비사용 현상을 감소시키기 위한 치료 방법으로 강제 유도 운동 치료가 추천되고 있다. 본 연구에서는 강제 운동 유도치료의 정의, 적용분야, 이론적 배경, 신경 생리학적 기전 및 장·단점과 뇌졸중 환자의 상지 재활 치료에 있어서 그 적용 가능성에 대하여 살펴보고자 한다. The purpose of this review was to research the potential of CIMT(Constraint Induced movement Therapy) on stroke hemiplegic patient rehabilitation. Constraint Induced movement Therapy that is exercise intervention developed on the basis of learned non-use and cortex relocation, is used to treat not only storke hemiplegic patient but also the patients with various other pathogenesis. Constraint Induced movement Therapy is recently recommended as a treatment to improve upper extremity function and reduce learned non-use symptoms in stroke patient who is not received intensive therapy during the recovery time. In this review, definition of constrait induced movement therapy, the applications, the theoretical background, the neurophysiological mechanisms and its feasibility of advantages and disadvantages of the upper extremities rehabilitation were discussed.

불안정 지지면을 이용한 운동 프로그램이 뇌졸중 환자의 균형에 미치는 효과

이지연,김용수,김진섭,박진현,최윤희,전덕훈,김경 대구대학교 특수교육재활과학연구소 2010 再活科學硏究 Vol.28 No.1

본 연구의 목적은 뇌졸중 환자의 재활을 위하여 불안정 지지면을 이용한 운동 프로그램이 균형 능력과 운동 기능 능력에 미치는 효과를 알아보고자 실시하였다. 불안정 지지면의 이용한 치료는 임상적으로 뇌졸중으로 인한 편마비 환자뿐만 아니라 스포츠 손상 및 노인들의 질환 등 다양한 병인을 가진 환자들의 치료에 이용되고 있다. 대부분의 뇌졸중 환자들은 재활 훈련을 할 수 있는 병원이나 기관에서 치료를 받을 때에 지지면의 차이를 제공함으로써 보다 더 안정한 지지면에서 적응할 수 있는 방법이 요구되고 있다. 하지만, 아직도 불안정 지지면을 이용한 구체화된 치료적 운동 방법과 객관적 평가에 대한 연구가 미비한 실정이다. 이러한 문제점을 해결하기 위하여 최근 뇌졸중 환자의 불안정 지지면과 이론적 근거를 바탕으로 한 운동 프로그램에 대한 연구가 더욱 필요하다. 본 연구에서는 실험군과 대조군이 같은 운동 프로그램을 적용하였을 때, 두 그룹 간에서 나타나는 균형 향상과 운동 기능 향상에 어떠한 효과를 주는지 살펴보고자 하였다. The purpose of this article was to study the effect of the exercise programme that uses the unstable supporting surface to rehabilitate cerebrovascular patients on balance ability and exercise function ability. The therapy is being clinically used for the patients with diverse pathological factors such as hemiplegia caused by CVA, sports injury, and diseases in the elderly. when most patients with CVA are treated in the hospital or institute that can provide rehabilitation training, they need to be given the way to adjust more stable surpporting surface by being provide with various stages of surface. However, the actual therapeutic exercises is still needed and the study for objective assessments wants conducting. To solve these problems, the study of unstable surface exercise programmes based on the evidences recently need to be made for the patients with CVA. in this study, we intend to look into what effects on the balance improvement and the exercise function are different from the experimental group to the control group with the same programme applied to the two groups.

Tip-induced control of quantum light-matter interactions in low-dimensional semiconductors

Kyoung-Duck Park 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2

Structure, functions, dynamics, and interactions are the basic elements to systematically understand scientific phenomena in nature. For the last hundred years there have been many scientific adventures of these properties on the micrometer scale alongside with evolving microscopy techniques, yet the nanoscopic nature leaves many open questions due to the limited spatial resolution of them. To achieve the desired nanometer imaging-resolution with multifunctional spectroscopic specificity, I develop scanning near-field microscopies with different optical modalities, such as elastic scattering, Raman scattering, IR absorption, photoluminescence(PL), and second-harmonic generation (SHG) from UV to mid-IR/THz regime in various interacting environments, e.g., ultra-high vacuum (UHV), cryogenic, and liquid. In this talk, I will demonstrate a range of new functions and properties of van der Waals materials, which are revealed by tip-enhanced nano-spectroscopy and -imaging on their natural physical length scales. Further, I will present a new perspective of near-field microscopy for applications in atomically thin 2D materials, i.e., active control of nanoscale light-matter interactions, with several examples I achieved recently.

Work Function Shift Mechanism of Metal-Gate Electrode with Ru∕Ti Bilayer

Park, In-Sung,Ko, Han-Kyoung,Lee, Taeho,Park, Jungho,Choi, Duck-Kyun,Ahn, Jinho,Park, Min-Ho,Yang, Cheol-Woong The Electrochemical Society 2007 Electrochemical and solid-state letters Vol.10 No.2

Near-Field Imaging of Cell Membranes in Liquid Enabled by Active Scanning Probe Mechanical Resonance Control

Park, Kyoung-Duck,Raschke, Markus B.,Jang, Min Jung,Kim, Jung Hwa,O, Beom-Hoan,Park, Se-Geun,Lee, El-Hang,Lee, Seung Gol American Chemical Society 2016 The Journal of Physical Chemistry Part C Vol.120 No.37

<P>Despite the power of far-field super-resolution microscopies for three-dimensional imaging of biomolecular structures and processes, its application is challenged in dense and crowded samples and for certain surface and membrane studies. Although near-field imaging with its ability to provide intrinsic subdiffraction limited spatial resolution at any optical modality, its application to biological systems has remained limited because of the difficulties of routine operation in liquid environments. Here we demonstrate stable and sensitive near-field scanning optical microscopy (NSOM) in a liquid based on a new mechanical resonance control and an optimization of the tip length, achieving a high quality factor (>2800) force sensing of the near-field probe. Through near-field imaging of the spatial distribution of epidermal growth factor receptors (EGFRs) on the membrane of A431 cancer cells as an example, we reveal nanoscale correlations between surface EGFR and intracellular organelle structures with similar to 50 nm spatial resolution. The method provides a new avenue surface imaging in viscous liquid media to complement super-resolution microscopy for studies of biological membranes, nanostructures, and interfaces.</P>

Clinical Outcomes and Finite Element Method Results of Anterior Cervical Discectomy and Fusion Using H-Beam Shaped Allospacer: A Comparison with Rim-Shaped Allospacer

Park Kyoung Jae,Kim Dae Hwan,Park Kyoung Duck,Park Jun Hee,Yoo Nam Kyu,Cho Ki Hong,Kim Sang Hyun 대한말초신경학회 2019 The Nerve Vol.5 No.2

Objective The main purpose of this study was to evaluate radiologic outcomes and Finite element method (FEM) results of anterior cervical discectomy and fusion (ACDF) using H-beam shaped allospacer, in comparison with rim-shaped allospacer. Methods From March 2011 to February 2014, 95 patients underwent ACDF using allospacers (H-beam shaped and rim shaped). Sixty-two patients were divided into 2 groups: H- beam shaped allospacer in group A (n=31); rim shaped allospacer in group B (n=31). We retrospectively estimated clinical outcomes, such as, neck and arm pain, radiographic fusion rate and adverse effects. In the FEM study, we compared the performance of 3 different shaped allospacer; i.e., H-beam shaped, H-hole shaped, rim-shaped. We tested the effectiveness of stress distribution from the 3 types of allospacer, using the evaluation criteria of (a) compression; (b) shear; and (c) torsion, under the same load. Results Neck and arm pain was reduced similarly by 63% to 73% in 2 groups. Fusion rates after 1 year in group A and B were 100% and 98% retrospectively. The complication rates of breakage and displacement in Group B were 16% and 3%. Group A show no adverse effects. From the FEM study, in the cases of the (a), (b), (c), we found that H-beam shaped allospacer resulted in effectiveness stress distribution and diversification regarding compression, shear and torsion compared with rim shaped allospacer. Conclusion In ACDF using allospacer, H-beam shaped allospacer shows more stable fusion rates with low incidence of complication compared with rim shaped allospacer.

Heterogeneity of HPV DNA in a case of bowenoid papulosis which progressed to squamous ceil carcinoma

( Kyoung Chan Park ),( Kyu Han Kim ),( Jong Seong Ahn ),( Sang Woong Youn ),( Ji Hwan Hwang ),( Ki Ho Park ),( Young Gull Kim ),( Sang Duck Kim ),( Dae Youp Lee ),( Joon Ho Choe ),( Jin Ho Chung ),( K 대한피부과학회 1998 초록집 Vol.36 No.20