• 한국식품영양학회지
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• 제27권3호
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• pp.435-446
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• 2014

This study was conducted to develop an optimal composite recipe of nutritional cookies containing Chinese artichoke (Stachy sieboldii Miq) powder. Rice powder was partially substituted with Chinese artichoke (Stachy sieboldii Miq) powder to reduce its content. The optimal sensory composite recipe was determined by 3 concentrations of Chinese artichoke (Stachy sieboldii Miq) powder, butter, and sugar, using the central composite design. In addition, the mixing condition of Chinese artichoke (Stachy sieboldii Miq) powder rice cookies was optimized by subjecting the cookies to a sensory evaluation and instrumental analysis using the response surface methodology (RSM). The effects of the addition of the three variables on the quality of Chinese artichoke (Stachy sieboldii Miq) rice powder cookies were assessed in terms of color, hardness, sweetness and sensory evaluation. The results of the sensory evaluation produced values very significant for flavor, texture, sweetness, appearance, and overall quality (p<0.05). The results of instrumental analysis showed significant values in moisture content, spreadability, sweetness (p<0.01), lightness, redness, and hardness (p<0.001). As a results, the optimal sensory ratio of Chinese artichoke (Stachy sieboldii Miq) rice cookies was determined to be Chinese artichoke (Stachy sieboldii Miq) powder 4.22 g, butter 120.00 g, and sugar 130.00 g.

• Journal of Ginseng Research
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• 제30권3호
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• pp.132-136
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• 2006

인삼에 있어 다경 및 잠아 발생형태가 원료삼 및 홍삼 품질에 미치는 영향을 구명하고자 지하부 특성 및 품질요인을 조사하였다. 단경개체는 1-3개의 잠아를 갖는 형태이고 2경개체는 2-3개 그리고 3경개체는 3개의 잠아를 갖는 형태이었다. 또한 단경개체는 62.9% 그리고 2경 이상의 다경개체는 37.1%의 분포를 나타냈다. 원료삼의 등급은 단경개체에 비하여 다경개체가 될 수록 저하하였고 단경개체와 다경개체 모두 잠아수가 많은 개체에서 등급이 낮았다. 경수에 따른 홍삼수율은 대체로 30% 내외로 단경이나 다경개체간에 큰 차이가 없었다. 그러나 본삼수율은 다경개체로 갈수록 감소하는 경향이었다. 홍삼 등급은 다경개체에 비해 단경개체가 양호하였으며 다경개체는 양삼과 잡삼이 많았다. 그리고 잠아수가 많을수록 홍삼등급은 저하하였다.

• 한국식품조리과학회지
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• 제33권1호
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• pp.1-8
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• 2017

Purpose: The aim of this study was to evaluate the quality characteristics of rice nutritional bars prepared by adding Chinese artichoke (CA) powder to the rice powder. Methods: CA rice nutritional bars were prepared with various levels of CA powder (0%, 5%, 10%, 15%, and 20%) and designated as CA0 (without CA powder), CA5, CA10, CA15, and CA20, respectively. The total phenolic content, DPPH free radical scavenging activity, moisture content, pH, baking loss rate, leavening rate, volume, color, texture analysis, and sensory evaluations of rice nutritional bars were performed. Results: The total phenolic content and DPPH free radical scavenging activity exhibited an increase with increase in the substitute amount of CA powder. The results showed that the pH of rice nutritional bars decreased in all sample groups as the content of CA powder increased. The volume of the sample group with CA powder was higher than that of CA0. As the content of CA powder increased, lightness of the rice nutritional bars crumbs decreased while redness and yellowness increased. The texture analysis of rice nutritional bars showed that hardness, gumminess, and chewiness were the highest in CA0 while springiness and cohesiveness were the lowest in CA0. With respect to characteristic intensity rating, the taste, flavor, and softness of rice nutritional bars increased with increasing amounts of CA powder. In terms of consumer acceptability, CA15 and CA20 received the highest scores with respect to texture. Conclusion: Therefore, the results of this study indicate that replacing 15% of the rice powder with CA led to an efficient enhancement in the antioxidant and nutritional values of rice nutritional bars as well as the sensory quality.

• 한국농공학회지
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• 제39권3호
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• pp.64-71
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• 1997

Floating aquatic plant system using water hyacinth was applied to examine feasibility as a wastewater treatment system for the industrial complex in rural area. The wastewater from the industrial complex does not likely contain toxic pollutants because the industries which generate wastewater with toxic compounds are not allowed to move in. Pilot plant was installed at Baeksuk Nongkong Danzi in Chunahn-City, Chunchungnam - Do , and field study was performed during summer and fall of 1996. Hydraulic loading rate was 0. $0.19m^3/m^2$.day. The effluent concentration of DO was higher than influent, and it implies that 0.6m depth reactor was reaerated enough to increase DO level. The influent concentration of BOD varied significantly from less than 30 to 120mg/${\ell}$ during the study period, however, effluent concentrations were generally lower than the water quality standard and removal efficiency was up to 85%. The influent concentration of COD also showed wide variation from less than 40 to 160mg/${\ell}$ and effluent concentration was higher than water quality standard when influent concentration was over l00mg/${\ell}$. The influent concentrations of T-N and T-P were lower than water quality standard and no further treatment was required, and these compounds were also removed in the system. Although some improvement and refinement are still required, overall* the floating aquatic plant system was proved to be feasible to apply to treat wastewater from industrial complex in rural area.

• 한국해양환경ㆍ에너지학회지
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• 제5권4호
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• pp.63-73
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• 2002

본 논문은 1988년 2원에 포항 앞바다에서 침몰한 총톤수 995톤의 유조선 경신호에 대한 수중 조사 작업과 그 결과를 다루고 있다. 조사는 경신호에 의한 추가 해양오염가능성을 파악하기 위하여 2001년 9원에 약 10일간의 일정으로 수행되었으며 첨단 해양조사장비인 ROV와 유인잠수정, 초음파 투께 계측장치 등을 이용하여 선체상태와 기름의 유출상황, 선체외판의 부식상태 통을 조사하였다. 조사 결과, 선체에서 계속적으로 소량의 기름이 유출되고 있는 것으로 확인되었으며 선체의 부식 상태 조사를 위해 선체의 일부에서 선체 두께 측정이 이루어졌다. 조사 결과와 기존 사고 보고서의 내용을 바탕으로 잔존유의 양을 추정하였을 때, 조사당시 선체에는 약 600㎘의 기금이 잔존하고 있는 것으로 추정되었으며 향후 선체외판의 부식으로 인해 잔존유가 추가 유출될 가능성이 있는 것으로 판단되었다 이와 함께 유출유 확산 예측시뮬레이션을 통해 특정한 기상상태에서는 유출된 기름이 주변해역을 오염시킬 수 있는 가능성을 확인하였다.

• 한국해양공학회지
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• 제29권6호
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• pp.488-498
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• 2015

This paper presents the dynamic model of an AUV called HW200 for underwater surveillance. The mathematical model of HW200 is briefly introduced, considering its shape. The maneuvering coefficients were initially estimated using empirical formulas and a database of vehicles with similar shapes. A motion simulator, based on Simulink of Mathworks, was developed to evaluate the mathematical model of the vehicle and to tune the maneuvering coefficients. The parameters were finely tuned by comparing the experimental results and simulated responses generated with the simulator by applying the same control inputs as the experiment. The velocity of HW200 in the tuning process was fixed at a constant forward speed of 1.83 m/s. Simulations with variable speed commands were conducted, and the results showed good consistency in the motion response, attitude, and velocity of the vehicle, which were similar to those of the experiment even under the speed variation. This paper also discusses the feasibility of its application to a model-based integrated navigation system (INS) using the auxiliary information on the velocities generated by the model.

• 한국어류학회지
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• 제28권4호
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• pp.273-278
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• 2016

본 연구는 진해 잠도주변 조하대 암반서식지에서 통발에 의해 채집된 어류 군집의 종조성과 계절을 조사하였다. 어류 시료는 2007년 9월에서 2008년 7월까지 통발로 매월 채집하였다. 조사기간 동안 24과에 속하는 48종의 어류가 채집되었다. 우점종은 흰꼬리볼락(Sebastes longispinis), 가시망둑(Pseudoblennius cottoides), 볼락(Sebastes inermis), 그물코쥐치(Rudarius ercodes), 망상어(Ditrema temminckii), 세줄베도라치(Ernogrammus hexagrammus)였으며, 이들 6종은 총 채집 개체수의 71.0%를 차지하였다. 어류 군집의 현존량과 다양도는 계절변동을 나타냈는데, 출현종수, 개체수, 다양도는 가을철에 가장 높았고, 생체량은 봄에 높았다. 우점종의 현존량은 계절별로 차이를 보였는데, 흰꼬리볼락은 봄과 여름에 현존량이 높았고, 가시망둑은 가을과 봄에 높았다. 볼락은 9월, 12월, 5월에 높은 현존량을 보였고, 그물코쥐치는 대부분 개체가 가을에만 출현하였다.

• 한국해안해양공학회지
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• 제14권2호
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• pp.171-181
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• 2002

최근, 구조물에 의한 쇄파를 수반한 다양한 파랑변형 해석법중에 자유수면의 추적기법인 VOF법을 이용한 수치해석기법이 각광을 받고 있다. 본 연구는 수중투과성구조물(잠제)에 의한 파랑변형 및 유속장의 해석을 위해 조파를 위한 line-source와 파의 재반사를 방지하기 위한 부가감쇠영역이 설치된 2차원수치파동수조에 잠제를 설치하고 구조물에 의한 파랑변형의 자유수면 추적을 위해 VOF법을 적용하였다. 2차원수치파동수조를 이용한 본 연구의 수치해석수법의 타당성 검증을 위해 수리실험을 실시하였으며 그 결과 본 수치해석결과와 잘 일치하였다. 일열잠제와 이열잠제에 대한 수치해석을 통해 잠제 주변 유속장 해석으로부터 일열잠제의 경우 배후에서 와가 발생하고 이열잠제의 경우 잠제사이와 잠제배후에서 와가 발생함을 확인하였으며 잠제의 천단상에서는 강한 비선형성분파가 발생하고 투과층내의 유속방향은 자유수면의 형상에 의해 좌우됨을 확인하였다

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2002년도 추계학술대회 논문집
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• pp.142-148
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• 2002

Autonomous underwater vehicles (AUVs) are unmanned underwater vessels to investigate sea environments, oceanography and deep-sea resources autonomously. Docking systems are required to increase the capability of the AUVs to recharge the batteries and to transmit data in real time for specific underwater works, such as repeated jobs at sea bed. This paper presents a visual servo control system for an AUV to dock into an underwater station with a camera mounted at the nose center of the AUV. To make the visual servo control system, this paper derives an optical flow model of a camera, where the projected motions of the image plane are described with the rotational and translational velocities of the AUV. This paper combines the optical flow equation of the camera with the AUVs equation of motion, and derives a state equation for the visual servoing AUV. This paper proposes a discrete-time MIMO controller minimizing a cost function. The control inputs of the AUV are automatically generated with the projected target position on the CCD plane of the camera and with the AUVs motion. To demonstrate the effectiveness of the modeling and the control law of the visual servoing AUV, simulations on docking the AUV to a target station are performed with the 6-dof nonlinear equations of REMUS AUV and a CCD camera.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2003년도 춘계학술대회 논문집
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• pp.89-93
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• 2003

The Korea Research Institute of Ships and Ocean Engineering (KRISO), the ocean engineering branch of KORDI, has designed and manufactured a model of an autonomous underwater vehicle (AUV) to test underwater docking. This paper introduces the AUV model, ASUM, equipped with a visual servo control system to dock into an underwater station with a camera and motion sensors. To make a visual servoing AUV, this paper implemented the visual servo control system designed with an augmented state equation, which was composed of the optical flow model of a camera and the equation of the AUV's motion. The system design and the hardware configuration of ASUM are presented in this paper. A small long baseline acoustic positioning system was developed to monitor and record the AUV's position for the experiment in the Ocean Engineering Basin of KRISO, KORDI. ASUM recognizes the target position by processing the captured image for the lights, which are installed around the end of the cone-type entrance of the duct. Unfortunately, experiments are not yet conducted when we write this article. The authors will present the results for the docking test of the AUV in near future.