• 원예과학기술지
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• 제33권3호
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• pp.435-442
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• 2015

본 연구는 임산부산물인 톱밥과 목질섬유를 원예작물용 혼합상토 원료로서의 적용가능성을 검토하고자 물리화학적 특성 분석 및 배추 육묘를 위한 종자발아 단계부터 생육과 관련된 실험을 수행하였다. 톱밥 및 목질섬유를 기존 사용되고 있는 피트모스와 물리화학적 특성을 비교 분석한 결과, 총 탄수화물 함량은 톱밥과 목질섬유가 각각 58.9, 41.1%로 피트모스(33.9%)보다 높은 총 탄수화물 함량을 나타냈고, C/N비는 톱밥 425.1, 목질섬유 240.8로 피트모스(56.3)보다 높은 수치를 나타냈다. 또한 피트모스의 무기성분함량은 K($0.02mg{\cdot}100g^{-1}$), Ca($0.57mg{\cdot}100g^{-1}$), Mg($0.13mg{\cdot}100g^{-1}$) 성분만을 소량 함유하고 있으나, 톱밥 및 목질섬유는 작물 재배 시 무기영양보충에 도움을 줄 수 있는 K, Ca, Mg, P성분이 다량 함유되어 있는 것으로 나타났다. 그러나 톱밥은pH 4.8로 피트모스(pH 5.1)와 목질섬유(pH 5.9)에 비해 산성을 나타내었고, 생장저해물질인 페놀성 화합물 함량도 톱밥이 $181.8mg{\cdot}g^{-1}$으로 피트모스 $103.1mg{\cdot}g^{-1}$ 및 목질섬유 $29.8mg{\cdot}g^{-1}$ 비해 높은 함량을 나타냈으며, 톱밥의 공극률 및 수분보유력은 각각 82.5, 47.1%, 목질섬유의 공극률 및 수분보유력은 각각 90.6, 56.2%로서 피트모스의 공극률(89.9%) 및 수분보유력(47.0%)과 유의한 차이를 나타내지 않았다. 톱밥 및 목질섬유를 혼합한 상토에서 작물생육특성을 분석하기 위해 배추를 육묘 하여 발아율, 엽면적 및 초장을 측정한 결과 목질섬유 혼합상토는 피트모스와 유사한 수준의 생육 특성을 나타내었고, 톱밥 혼합상토는 피트모스에 비해 상대적으로 낮은 수준의 생육특성을 나타냈다. 이는 물리적인 특성보다 화학적인 특성, 특히 원료의 pH 또는 생장저해물질의 함량이 작물의 생육에 영향을 미친 것으로 판단된다. 이러한 물리화학적 특성 및 생육 특성의 결과를 고려했을 때, 목질섬유는 피트모스를 부분적으로 대체할 수 있는 혼합상토 원료로서 적합할 것으로 판단된다.

• Journal of Microbiology and Biotechnology
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• 제8권5호
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• pp.497-500
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• 1998

A new strain of Bacillus capable of growing upto pH 11 was isolated from a local pond polluted with detergents. This strain elicited unimpaired growth in media supplemented with heavy metals such as As, Cu, Cd, Hg, Ni and Zn. A MIC value of 200, 3, 1.60, 2.25, 7.50 and 3.70 mM was noticed for As, Cu, Cd, Hg, Ni and Zn respectively. Analysis of total DNA revealed the presence of a plasmid of 26 kb. This plasmid was lost by acriflavine treatment to the cultures. Such cured strains were found sensitive to heavy metals. Our findings suggest that incidence of heavy metal resistance is widely distributed and resistant strains could be isolated from heavy metal unpolluted sites.

• 한국멀티미디어학회논문지
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• 제18권4호
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• pp.565-574
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• 2015

Falls are the main cause of serious injuries and accidental deaths in people over the age of 65. Due to widespread adoption of smartphones, there has been a growing interest in the use of smartphones for detecting human behavior and activities. Modern smartphones are equipped with a wide variety of sensors such as an accelerometer, a gyroscope, camera, GPS, digital compass and microphone. In this paper, we introduce a new method that determines the fall direction of human subjects by analyzing the three axis components of acceleration vector.

• 대한수의학회지
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• 제38권4호
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• pp.823-828
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• 1998

This study was carried out to determine the causative agent and the clinical features of dermatophytosis occurred in 3 dogs from Tae-gu, Korea between 1996 and 1997. Specimens of hair and scale, collected from skin lesions were inoculated on potato dextrose agar and mycobiotic agar supplemented with thiamine and inositol. The agar plates were incubated at $25^{\circ}C$ for 2 weeks. Growing fungi isolated were identified by the morphological and growth characterization on bromocresol purple-milk solids-glucose medium, Christensen urea broth and trichophyton media, and by hair perforation tests. Skin lesions were observed in legs, abdomen, ears, face and head with alopecia of various sizes accompanied by itching and/or inflammation. The causative agent of dermatophytosis in the 3 dogs was identified as Microsprum gypseum and Trichophyton rubrum (mixed infection, dog 1), T rubrum (dog 2) and T raubitschekii (dog 3). The dermatophytosis by T rubrum and T raubitschekii was first found on animals in Korea.

• 한국환경복원기술학회지
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• 제7권6호
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• pp.12-18
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• 2004

This study is to make plans for perpendicular greening with artificial ground of planter type to improve urban environment. The experiments of this study are performed to find out the suitable soil and irrigation method for artificial ground of planter greening. Thereupon, organic or inorganic soil improvement material is mixed with soil of each planter as experiment, In result, the plants in soil mixed organic soil improvement material thrive rather than that in soil mixed inorganic material, It is to be desired that the planter equip with the irrigation system, be wider than planter and be planted shrubs for positive plant growth. As for irrigation system, drip irrigation is effective on plant growth southern exposure but Ebb and Flow is effective eastern exposure. Therefore, irrigation system should consist of two types above plus keeping water on the bottom of planter to save water and store rainwater.

• 한국멀티미디어학회논문지
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• 제18권8호
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• pp.915-924
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• 2015

With growing popularity of cloud computing services, users can more easily manage massive amount of data by outsourcing them to the cloud, or more efficiently analyse large amount of data by leveraging IT infrastructure provided by the cloud. This, however, brings the security concerns of sensitive data. To provide data security, it is essential to encrypt sensitive data before uploading it to cloud computing services. Although data encryption helps provide data security, it negatively affects the performance of massive data analytics because it forbids the use of index and mathematical operation on encrypted data. Thus, in this paper, we propose a novel algorithm which enables to efficiently process a large amount of encrypted data. In particular, we propose a novel top-k processing algorithm on the massive amount of encrypted data in the cloud computing environments, and verify the performance of the proposed approach with real data experiments.

• 한국멀티미디어학회논문지
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• 제18권8호
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• pp.935-942
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• 2015

According to growing of the plant cultivation in a greenhouse environment, the demand of a system to control the greenhouse easier has increased. Currently, the methods to control by the mobile App represent the information in a greenhouse environment with a simple numerical data or compose only the contents with a limited degree of freedom. In order to solve these problems, this paper presents a system that can be viewed or controlled greenhouse conditions in near / remote distance using augmented reality and MQTT communication protocol, RTSP media streaming protocol. The proposed method is implemented in Android smartphone environment and acts monitoring the information (temperature, humidity, illuminance) obtained by greenhouse's sensors and transmits the real time greenhouse's video using RTSP in the remote distance, and controls the values of temperature, humidity, illuminance for the greenhouse using the augmented reality in the near distance.

• Genomics & Informatics
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• 제18권2호
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• pp.24.1-24.7
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• 2020

Despite a growing number of natural language processing shared-tasks dedicated to the use of Twitter data, there is currently no ad-hoc annotation tool for the purpose. During the 6th edition of Biomedical Linked Annotation Hackathon (BLAH), after a short review of 19 generic annotation tools, we adapted GATE and TextAE for annotating Twitter timelines. Although none of the tools reviewed allow the annotation of all information inherent of Twitter timelines, a few may be suitable provided the willingness by annotators to compromise on some functionality.

• Plant Biotechnology Reports
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• 제3권1호
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• pp.1-56
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• 2009

Orchid seeds are nearly microscopic in size. Because of that, many fanciful theories were proposed for the origin of orchids. Almost 400 years separate the time when orchid seeds were seen for the first time and the development of a practical asymbiotic method for their germination. The seeds were first observed and drawn during the sixteenth century. Seedlings were first described and illustrated in 1804. The association between orchid and fungi was observed as early as 1824, while the requirement for mycorrhiza for seed germination was established in 1899. An asymbiotic method for orchid seed germination was developed in 1921. After Knudson's media B and C were formulated, orchids growing and hybridization became widespread. Hybrids which early growers may not have even imagined became possible.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 추계학술발표회
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• pp.192-193
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• 2011