• 생물환경조절학회지
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• 제32권3호
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• pp.205-209
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• 2023

기계적 자극은 식물체의 형태적 변화를 유도하는 것으로 알려져 있다. 본 연구에서는 기계적 자극을 적용한 토마토의 육묘기 동안의 생육 변화를 확인하기 위해 수행되었다. 브러싱 처리가 기계적 자극으로 이용되었으며, 아크릴이 부착된 이송장치를 이용하여 2시간 간격으로 파종 후 10일 이후부터 처리를 진행하였다. 브러싱 처리 동안 생육 변화를 확인하기 위해 3일 간격으로 생육을 조사하였다. 초장과 엽면적은 브러싱 처리에서 대조구에 비해 감소하는 결과를 보였으며 지상부의 생체중과 건물중은 대조구와 유사한 값을 보였다. 총 근장과 지하부 표면적은 브러싱 처리에서 대조구에 비해 증가하였으며, 지하부 부피는 대조구와 브러싱 처리가 유사한 값을 보였다. 결론적으로 토마토 공정묘에 브러싱 처리는 지상부의 생육 감소를 유도하였으며 지하부의 형태적 발달을 증가시키는 것으로 판단된다.

• 한국동물생명공학회지
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• 제38권4호
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• pp.254-262
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• 2023

Background: Water deer and sika deer, which breed in the wild environment, are known to have similar reproductive physiology mechanisms. Therefore, this study aimed to analyze the differences in uterine development between water deer and sika deer during estrus. Methods: MMPs and uterine development-related factors were analyzed and morphological differences were compared in the uterus of sika deer captured near Russia near Korea and water deer captured in the wild in Korea. Results: In terms of morphological differences in the uterus, the glands that form villus within the endometrium of the water deer were newly developed, and the formation of small glands was high, but the villus and glands of the sika deer were expanded, and the stroma zone in the myometrium was higher than that of the water deer. Development has increased. Additionally, the expression of PAPP-A and VEGF factors was increased in the endometrium of water deer than in sika deer, but the actions of MMPs were increased in sika deer. Conclusions: As a result of this study, there is a significant difference in the development of glands in the endometrium of water deer and sika deer during estrus, and it is believed that there is a significant difference in the development of the uterus due to the physiological effects of estrus between water deer and sika deer. Additionally, it is believed that there will be differences in the timing at which pregnancy can be decided.

• 전자공학회논문지S
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• 제34S권2호
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• pp.79-93
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• 1997

This paper presents a linear shift-invariant system euqivalent to morphological dilation for a memoryless uniform source in the sense of the power spectral density function, and comares it with dialtion. This equivalent LSI system is found through spectral decomposition and, for dilation and with windwo size L, it is shown to be a finite impulse response filter composed of L-1 delays, L multipliers and three adders. Th ecoefficients of the equivalent systems are tabulated. The comparisons of dilation and its equivalent LSI system show that probability density functions of the output sequences of the two systems are quite different. In particular, the probability density functon from dilation of an independent and identically distributed uniform source over the unit interval (0, 1) shows heavy probability in around 1, while that from the equivalent LSI system shows probability concentration around themean vlaue and symmetricity about it. This difference is due to the fact that dilation is a non-linear process while the equivalent system is linear and shift-ivariant. In the case that dikation is fabored over LSI filters in subjective perforance tests, one of the factors can be traced to this difference in the probability distribution.

• Journal of Advanced Marine Engineering and Technology
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• 제36권5호
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• pp.645-661
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• 2012

Recently, pirates are infesting on the sea and they have been hijacking the several vessels for example Samho Dream and Samho Jewelry of Korea. One of the items to reduce the risk is to adopt the invader detection system. If the pirates break in to the ship, the detection system can monitor the pirates and then call the security alarm. The crew can gain time to hide to the safe room and the report can be automatically sent to the control room to cope with the situation. For the invader detection, an unmanned observation system was proposed using the image detection algorithm that extracts the invader image from the recording image. To detect the motion area, the difference value was calculated between the current image and the prior image of the invader, and the 'AND' operator was used in calculated image and edge line. The image noise was reduced based on the morphology operation and then the image was transformed into morphological information. Finally, a neural network model was applied to recognize the invader. In the experimental results, it was confirmed that the proposed approach can improve the performance of the recognition in the invader monitoring system.

• 동력기계공학회지
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• 제15권4호
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• pp.5-10
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• 2011

In case of using rapid vacuum-freeze drying for high quality dry flower of flowering plant, the morphological and physiological characteristics of dry rose showed as the following. The dry ratio of about 82% presented after 1 day in case of using rapid vacuum-freeze drying and it was reached that the optimum storage water content of general dry products was 18%. The dry ratio of about 89% presented after 4 days. This result indicates very short dry time comparing with natural dry time of 12 days. Also, the morphological characteristics of flowering plant in case of vacuum-freeze drying showed similar shape with real flower. The contraction decreased about 9% comparing with real flower under dry time of 72 hours. But the contraction in case of natural dry decreased 36% and showed noticeable difference. The brightness which affects physiological characteristics of dry flowering plant showed lower values according to the dry process and chromaticity was thick. After 4 days, natural dry was thick with about 2 times comparing with vacuum-freeze drying. In case of vacuum-freeze drying, the quantity of anthocyanin and chlorophyl which affect discoloration and bleaching of dry flowering plant showed the clear difference comparing with natural dry method due to the sublimation by vacuum after rapid freeze with short initial time.

• 한국환경과학회지
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• 제21권11호
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• pp.1297-1305
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• 2012

Clonal plants combine sexual and clonal reproduction, which contribute differently to plant fitness. Reproductive analyses have highlighted the importance of clonal growth in shaping the spatial genetic structure in Potentilla conferta Bunge, a herbaceous rhizomatic clonal distributed in hot sand dunes. We investigated the reproduction system of P. conferta at two populations in Mongol and three natural populations in Uzbekistan. The measurements of 19 quantitative or qualitative morphological characters were taken on each of total individuals directly from their natural habitats. Some morphological characteristics between Mongolia and Uzbekistan populations showed a slight heterogeneity of variance. Especially, the length of internodes (LFI and LSI) and characteristics of root (LLR and NOR) were shown a significant difference between two countries (P<0.05). P. conferta of Uzbekistan has most ramets at short distance intervals 30~100 cm. In light conditions, P. conferta of Uzbekistan was significantly less resilience than P. conferta of Mogol. In drought conditions, although there was not shown significant difference, P. conferta in Uzbekistan was less resilience than that in Mogol. The core analysis indicates that P. conferta in Uzbekistan is the more resistant than that of Mongol and seems to do by sexual reproduction strategy during several strong environmental disadvantages such as drought events.

• 대한본초학회지
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• 제23권2호
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• pp.41-49
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• 2008

Objectives : In order to distinguish morphological characteristics of trunk bark and root bark of Ulmus davidiana var. japonica (Rehder) Nakai and the trunk bark and root bark of Hemiptelea davidii Planchon were sampled and compared in terms of their external and internal features with flour states according to their medical use, through microscopic examination. Methods : The slice of the tested material made by paraffin section technique was colored with Safranine Malachite Green contrast methods, and the flour of it was mounted by the liquid made by the same ratio of each of glycerin, acetic acid, and water, and then observed and photographed by olympus-BHT. Results : 1. Internal Features 1) A large parenchymatous cell was observed in the phloem of the slice of both trunk bark and root bark of Ulmi Cortex. However, both of the trunk bark and root bark of Hemipteleae Cortex did not have parenchymatous cell in the phloem; instead, stone cells including much square crystal of calcium oxalate were distributed around fiber bundle, and the parenchymatous cell included much druse crystal of calcium oxalate. 2) In both the Ulmi Cortex and Hemipteleae Cortex, rhytidome was observed in trunk bark, but not in root bark, but in the parenchymatous cell of the root bark of the Ulmi Cortex contained starch grain. 2. Flour States 1) In the flour of root bark of the Ulmi Cortex, a large parenchymatous cell was observed. However, in the flour of trunk bark and root bark of Hemipteleae Cortex, no parenchymatous eel was found; instead, stone cell including square crystal of calcium oxalate and druse crystal of calcium oxalate were observed. 2) There was no remarkable difference between the trunk bark and root bark of Hemipteleae Cortex. However, starch grain was contained in the parenchymatous cell of the root bark of Ulmi Cortex but not in the trunk bark of it. Conclusions : There were some morphological differences in external, internal, and flour parts of Ulmi Cortex and Hemipteleae Cortex. In particular, there was a morphological difference in flour states between the trunk bark and root bark of Ulmi Cortex, it is possible to use microscope to distinguish their flour states.

• 한국수산과학회지
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• 제30권2호
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• pp.297-304
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• 1997

한국산과 중국산 피조개를 대상으로 형태적 차이와 RAPD (Random amplified polymorphic DNA) 기법을 이용한 유전적 차이점을 비교 연구하였다. 실험에 사용한 피조개는 경남 진해만에서 천연채묘된 치패와 중국 산동성 영성시에서 인공채묘된 치패를 채집하여 사용하였다. 두 집단의 형태적 차이는 패각형질의 부위별 길이와 무게를 계측하여 계측형질별 상관관계로 조사하였다. 그리고 유전적 차이점은 primer 종류별로 생성된 RAPD band 들간의 유사정도로 비교하였다. 각장에 대한 최대방사능길이의 상대성장율이 두 집단에서 뚜렷한 차이 $(P\leq0.05)$를 나타내어, 중국산이 한국산보다 패각의 후단부가 길다는 것을 알 수 있었다. 방사능의 수는 한국산 피조개가 $36\~41$ 였고, 중국산이 $39\~43$조 였다. RAPD-PCR 결과 19가지의 primer들로 부터 각각 $2\~6$개의 band를 볼 수 있었다. 한국산과 중국산 피조개간의 유전적 유사도는 0.29로 매우 낮아 두 집단 간의 유전적 구별이 명확하게 나타났다. 또한 한국산 피조개 개체별 유전적 유사도는 $0.58\~0.40$로, 중국산은 $0.48\~0.32$로 한 국산 피조개가 중국산보다 개체별 유전적 유사도가 높았다.

• 대한공간정보학회지
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• 제25권1호
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• pp.9-17
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• 2017

초분광 영상(hyperspectral imagery)은 주성분분석이나 최소잡음비율 등을 이용하여 자료의 차원과 잡음을 감소시켜 토지피복분류에 사용되는 것이 일반적이다. 최근에는 분광정보와 공간적 특성을 가진 다양한 입력 자료를 이용한 감독분류에 관한 연구가 활발히 진행되고 있다. 본 연구에서는 초분광 영상을 이용한 토지피복분류를 위해 principle component(PC) 밴드와 normalized difference vegetation index(NDVI) 자료를 감독분류의 입력자료로 활용하였다. NDVI 자료는 초분광 영상에서 추출된 PC 밴드가 포함하고 있지 않는 추가적인 정보를 활용하여 식생지역에 대한 토지피복분류 정확도를 높이고자 사용하였으며, morphological filter를 통해 각 밴드의 extended attribute profiles(EAP)를 제작하여 분류를 위한 입력 자료로 사용하였다. 감독분류기법은 random forest 알고리즘을 이용하였으며, EAP를 기반으로 다양한 입력 자료의 적용에 따른 분류정확도를 비교하고자 하였다. 연구지역으로는 두 대상지를 선정하였으며, 영상 내에서 취득한 참조자료를 이용하여 정량적인 평가를 수행하였다. 본 연구에서 제안한 기법의 분류정확도는 85.72%와 91.14%로 다른 입력 자료들을 이용한 경우와 비교하여 가장 높은 분류정확도를 나타냈다. 향후, 초분광 영상을 이용한 토지피복분류의 정확도를 높이기 위한 분류 알고리즘 개발과 대상지역 특성에 맞는 추가 입력자료 개발에 관한 연구가 필요할 것으로 사료된다.

• 대한본초학회지
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• 제20권4호
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• pp.33-39
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• 2005

Objectives : Because Ligusticum sinense Root as well as those of Angelica tenuissima Root are sole as Gobon(藁本) in domestic markets, morphological characteristics of them are attempted to be distinguished. Methods : The slice of the tested material made by paraffin section technique was colored with Safranine Malachite Green contrast methods, and then observed and photographed by olymphus-BHT. Results : 1. Angelica tenuissima Root has considerable number of thick roots, but Chinese Ligusticum sinense Root and Ligusticum jeholense Root are composed of rhizomes mostly with small roots. 2. Intersection of rhizomes of Angelica tenuissima Root shows a 'V'-like arrangement of xylem vessel. 3. Chinese Ligusticum sinense Root and Ligusticum jeholense Root did not show the 'V'-like arrangement, and sliced fiber bundles were found in xylem. 4. There was no difference between Chinese Ligusticum sinense Root and Ligusticum jeholense Root. Conclusions : In conclusion, Angelica tenuissima Root, Chinese Ligusticum sinense Root, and Ligusticum jeholense Root show characteristic differences in internal forms, so that it is possible to distinguish them with optical microscope.