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Neurovascular Compression Caused by Popliteus Muscle Enlargement Without Discrete Trauma
Kyoung Jin Cho,Sangkuk Kang,Sanghyung Ko,Junghyun Baek,Yeongkyun Kim,Noh Kyoung Park 대한재활의학회 2016 Annals of Rehabilitation Medicine Vol.40 No.3
Popliteal entrapment syndrome caused by isolated popliteus muscle enlargement is very rare, although its occurrence has been reported after discrete trauma. However, popliteal artery stenosis with combined peroneal and proximal tibial neuropathy caused by popliteus muscle enlargement without preceding trauma has not been reported. A 57-year-old man presented with a tingling sensation and pain in his left calf. He had no previous history of an injury. The symptoms were similar to those of lumbosacral radiculopathy. Calf pain became worse despite treatment, and the inability to flex his toes progressed. Computed tomography angiography and magnetic resonance imaging of the lower extremity showed popliteal artery stenosis caused by popliteus muscle enlargement and surrounding edema. An electrodiagnostic study confirmed combined peroneal and proximal tibial neuropathy at the popliteal fossa. Urgent surgical decompression was performed because of the progressive neurologic deficit and increasing neuropathic pain. The calf pain disappeared immediately after surgery, and he was discharged after the neurologic functions improved.
Carbon and nitrogen storage in an age-sequence of Pinus densiflora stands in Korea.
Noh, Nam-Jin,Son, Yowhan,Lee, Sue-Kyoung,Seo, Kyung-Won,Heo, Su-Jin,Yi, Myong-Jong,Park, Pil-Sun,Kim, Rae-Hyun,Son, Yeong-Mo,Lee, Kyeong-Hak Jointly published by Science China Press and Sprin 2010 Science China. Life sciences Vol.53 No.7
<P>The carbon (C) and nitrogen (N) storage capabilities of Pinus densiflora in six different stand ages (10, 27, 30, 32, 44, and 71 years old) were investigated in Korea. Thirty sample trees were destructively harvested and 12 were excavated. Samples from the above and belowground tree components, coarse woody debris (CWD), forest floor, and mineral soil (0-30 cm) were collected. Tree biomass was highest in the 71-year-old stand (202.8 t ha(-1)) and lowest in the 10-year-old stand (18.4 t ha(-1)). C and N storage in the mineral soil was higher in the 71-year-old stand than in the other stands, mainly due to higher soil C and N concentrations. Consequently, the total ecosystem C and N storage (tree+forest floor+CWD+soil) was positively correlated with stand age: increasing from a minimum in the 10 year old stand (18.8 t C ha(-1) and 1.3 t N ha(-1)) to a maximum in the 71-year-old stand (201.4 t C ha(-1) and 8.5 t N ha(-1)). The total ecosystem C storage showed a similar sigmoidal pattern to that of tree C storage as a function of the age-sequence, while N storage in the CWD, forest floor and mineral soil showed no significant temporal trends. Our results provide important insights that will increase our understanding of C and N storage in P. densiflora stands and our ability to predict changes according to stand age in the region.</P>
Scale-space approximated convolutional neural networks for retinal vessel segmentation
Noh, Kyoung Jin,Park, Sang Jun,Lee, Soochahn Elsevier 2019 COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE Vol.178 No.-
<P><B>Abstract</B></P> <P>Background and objective: Retinal fundus images are widely used to diagnose retinal diseases and can potentially be used for early diagnosis and prevention of chronic vascular diseases and diabetes. While various automatic retinal vessel segmentation methods using deep learning have been proposed, they are mostly based on common CNN structures developed for other tasks such as classification.</P> <P><B>Methods</B></P> <P>We present a novel and simple multi-scale convolutional neural network (CNN) structure for retinal vessel segmentation. We first provide a theoretical analysis of existing multi-scale structures based on signal processing. In previous structures, multi-scale representations are achieved through downsampling by subsampling and decimation. By incorporating scale-space theory, we propose a simple yet effective multi-scale structure for CNNs using upsampling, which we term <I>scale-space approximated CNN (SSANet)</I>. Based on further analysis of the effects of the SSA structure within a CNN, we also incorporate residual blocks, resulting in a multi-scale CNN that outperforms current state-of-the-art methods.</P> <P><B>Results</B></P> <P>Quantitative evaluations are presented as the area-under-curve (AUC) of the receiver operating characteristic (ROC) curve and the precision-recall curve, as well as accuracy, for four publicly available datasets, namely DRIVE, STARE, CHASE_DB1, and HRF. For the CHASE_DB1 set, the SSANet achieves state-of-the-art AUC value of 0.9916 for the ROC curve. An ablative analysis is presented to analyze the contribution of different components of the SSANet to the performance improvement.</P> <P><B>Conclusions</B></P> <P>The proposed retinal SSANet achieves state-of-the-art or comparable accuracy across publicly available datasets, especially improving segmentation for thin vessels, vessel junctions, and central vessel reflexes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Conventional CNN structures may cause aliasing in multi-scale feature extraction. </LI> <LI> In the scale-space approximated CNN (SSANet) decimation is replaced with upsampling. </LI> <LI> Upsampling after downsampling is essentially Gaussian blurring in scalespace theory. </LI> <LI> Reduced receptive field is offset with residual blocks that also increase capacity. </LI> <LI> Proposed SSANet shows state-of-the-art accuracy for retinal vessel segmentation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Hyun-Kyoung Lee,Byoung-Hee Lee,Seung-Hyeok Seok,Min-Won Baek,이희영,김동재,나이랑,Kyoung-Jin Noh,Sung-Hoon Park,Dutta Noton Kumar,Hiroaki Kariwa,Mina Nakauchi,Suk-Jin Heo,Jae-Hak Park 대한수의학회 2010 JOURNAL OF VETERINARY SCIENCE Vol.11 No.2
Severe acute respiratory syndrome (SARS) is a life-threatening disease for which accurate diagnosis is essential. Although many tools have been developed for the diagnosis of SARS, false-positive reactions in negative sera may occur because of cross-reactivity with other coronaviruses. We have raised polyclonal and monoclonal antibodies (Abs) using a recombinant form of the SARS virus nucleocapsid protein. Cross-reactivity of these anti-SARS Abs against human coronavirus (HCoV) 229E and HCoV OC43 were determined by Western blotting. The Abs produced reacted with recombinant SARS virus nucleocapsid protein, but not with HCoV 229E or HCoV OC43.
노재경 ( Noh Jae Kyoung ),이진영 ( Lee Jin Young ),진용진 ( Jin Yong Shin ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
The DA W AST model was originally developed to consider daily variation in the unsaturated soil water storage and it is a conceptual lumped model. Return flows from agricultural, domestic and industrial water were included to the original result of model simulation to calibrate model parameter. Daily inflow to the Daechung multipurpose dam was applied to verify the DA W AST model considered return flows. Simulation results were comparable to the inflows of dam operation reasonably.
연구논문 : 안점막자극시험의 대체시험법으로서 bovine corneal opacity assay의 확립
노경진 ( Kyoung Jin Noh ),석승혁 ( Seoung Hyeok Seok ),백민원 ( Min Won Baek ),이영희 ( Young Hui Lee ),김동재 ( Dong Jae Kim ),나이랑 ( Yi Rang Na ),박성훈 ( Sung Hoon Park ),이현경 ( Hyun Kyoung Lee ),김배환 ( Bae Hwan Kim ) 한국동물실험대체법학회 2007 동물실험대체법학회지 Vol.1 No.1
The objective of this study is establishing of an alternative method using bovine cornea to rabbit eye irritation test. The bovine corneal opacity and permeability assay is checking opacity and permeability of bovine cornea after exposure of chemical irritants. In this study, we measured the opacity of the bovine cornea by quantifying the ability of light to pass through it using opacitometer. In addition, we optimized the basal opacity level before treatment of irritants to bovine corneas. With these results, we established the standard operating procedure of bovine corneal opacity assay.
노경진 ( Kyoung Jin Noh ) 호남고고학회 2014 湖南考古學報 Vol.48 No.-
전북지역에서 확인된 기와가마는 그 유적 수에 있어 괄목할 만한 증가세를 보여주고 있지만 다른 지역에 비해 아직까지 연구가 미진한 실정이다. 이에 본고에서는 전북지역에서 조사된 유적을 중심으로 그 현황을 살펴보고, 가마구조에 대한 분석과 출토 기와의 특징을 통해 시기에 따른 변화상을 검토해 보았다. 분석결과, 가마의 구조에서 시간성을 띠는 속성은 화구-연소실의 종단면형태, 불턱(단벽)시설의 유무, 소성부의 규모(면적), 소성부의 평면형태가 있다. 이를 토대로 전북지역 고려~조선시대 기와가마는 크게 Ⅰ~Ⅴ분기로 세분된다. Ⅰ기는 9세기 후반~10세기로 화구-연소실의 종단면형태는 외저내고(外底內高), 내외평탄(內外平坦)을 띠며, 불턱시설을 마련하지 않은 무단식이 확인된다. 소성부의 면적은 소형에 속하며, 소성부의 평면형태는 타원형계와 방형계를 띠는 특징을 보인다. Ⅱ기는 11세기~13세기에 해당한다. 화구-연소실의 종단면은 내외평탄형을 띠며, 불턱(단벽)을 마련한 유단식의 가마형태가 확인된다. 소성부의 규모는 소형뿐 만 아니라 중형의 규모가 등장하는 시기이며, 소성부는 타원형계와 방형계 모두 확인된다. Ⅲ기는 14세기~15세기에 해당한다. 화구-연소실의 종단면은 내외평탄형이 주를 이루며, 소성부는 소형에서 점차 중형으로 변모해 가는 양상이 관찰된다. 평면형태는 방형계와 세장형계를 띤다. Ⅳ기는 16세기~17세기에 해당한다. 화구-연소실의 종단면에서 외고내저(外高內底)형이 본격적으로 등장하는 시기이며, 소성부의 평면형태는 방형계에서 세장형계로 변모해 가는 양상이 관찰된다. 소성부의 규모도 중형만 확인된다. Ⅴ기는 18세기 이후에 해당한다. 구조에 있어서 Ⅳ기와 비슷한 양상을 보이지만 소성부의 규모가 대형에 속한다는 점이 특징적이다. 이는 기와 수요량의 증가로 인한 대량생산과의 관련성을 유추해 볼 수 있다. This study focuses on the changing features of roof tiles’ kilns during the Koryo and Chosun period. In this paper, the kilns of Koryo~Chosun in Chonbuk region is divided into I~V phases. In particular, the backside patterns of roof tiles excavated were no pattern, grid pattern, fish-bone pattern, complex pattern at Apparatus I, and no pattern, grid pattern, line pattern, fish bone pattern at Apparatus II, and no pattern, collective line pattern, blue sea wave pattern, complex pattern at Apparatus III, and no pattern, line pattern, blue sea wave pattern at Apparatus IV, and no pattern, collective line pattern and blue sea wave pattern at Appartus V. While this paper has dealt with the structures of roof tile kilns in Koryo and Chosun period in Chonbuk region through time, there was a severe limitation to analyze original structures due to the scarcity of the remainign structures. Nevertheless, if proper investigations of kilns relics are taken, hopefully, the production and distribution processes of roof tiles will be reconstructed and the relationship between the craftspeople who managed the structure of kilns and societies of this region at those times will be greatly understood.
안점막자극시험의 대체시험법으로서 bovine corneal opacity assay의 확립
노경진 ( Kyoung Jin Noh ),석승혁 ( Seoung Hyeok Seok ),백민원 ( Min Won Baek ),이영희 ( Young Hui Lee ),김동재 ( Dong Jae Kim ),나이랑 ( Yi Rang Na ),박성훈 ( Sung Hoon Park ),이현경 ( Hyun Kyoung Lee ),김배환 ( Bae Hwan Kim ) 한국동물실험대체법학회 2007 동물실험대체법학회지 Vol.1 No.1
The objective of this study is establishing of an alternative method using bovine cornea to rabbit eye irritation test. The bovine corneal opacity and permeability assay is checking opacity and permeability of bovine cornea after exposure of chemical irritants. In this study, we measured the opacity of the bovine cornea by quantifying the ability of light to pass through it using opacitometer. In addition, we optimized the basal opacity level before treatment of irritants to bovine corneas. With these results, we established the standard operating procedure of bovine corneal opacity assay.