• Tuberculosis and Respiratory Diseases
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• 제70권4호
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• pp.330-337
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• 2011

Background: The clinicopathologic characteristics of patients with non-small cell lung cancer (NSCLC) have been changing. Recently, Positron emission tomography-computed tomography (PET-CT) has usually been used for diagnosis, follow-up to treatment and surveillance of NSCLC. We studied the pattern of recurrence and prognosis in patients who underwent complete resection for NSCLC according to histologic subtype. Methods: All patients who underwent complete resection for pathological stage I or II NSCLC between January 2005 and June 2009 were identified and clinical records were reviewed retrospectively, especially the histologic subtype. Results: Recurrences were identified in 50 of 112 patients who had complete resection of an NSCLC. Sites of recurrence were locoregional in 15 (30%), locoregional and distant in 20 (40%), and distant in 15 (30%). Also, sites of recurrence were intra-thoracic in 29 (58%), extrathoracic and intra-thoracic recurrence in 15 (30%), and extrathoracic in 6 (12%). In locoregional recurrence, there was 37% recurrence for non-squamous cell carcinoma (non-SQC) and 25% for squamous cell carcinoma (SQC). In distant recurrence, there was 39% recurrence for non-SQC and 18% for SQC. Locoregional recurrence in the bronchial stump was more common in SQC than non-SQC (14% vs. 45%, p=0.025). Prognosis of recurrence was not influenced by histologic subtype and the recurrence-free survival curve showed that the non-SQC group did not differ from the SQC group according to stage. Conclusion: The prognosis for recurrence does not seem to be influenced by histologic types, but locoregional recurrence in the bronchial stump seems to be more common in SQC than non-SQC in completely resected stage I and II NSCLC.

• 한국자기공명학회논문지
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• 제24권4호
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• pp.96-103
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• 2020

A new NMR method to monitor solvent-localized NMR signals in the two-phase liquid system is suggested. This method based on intermolecular single-quantum coherence (iSQC). Here, we exploited the feature of the local action of distant dipolar field (DDF) effect in order to filter out specific NMR signals dissolved in different solvents. This solvent specific iSQC spectroscopy was carried out on a model two-phase liquid system (D-glucose in water/palmitic acid in chloroform), and showed solvent-localized NMR signals. We believe our approaches might be useful in metabolic analysis such as two-phase liquid extraction scheme for labile chemical species.

• 한국항행학회논문지
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• 제25권6호
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• pp.543-549
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• 2021

본 논문에서는 불확실성의 크기가 유한한 파라미터를 갖는 스트랩다운 관성항법시스템에 대한 강인한 전달정렬 기법을 제안하였다. 크레인 공간을 이용하면 에너지가 유한한 불확실성을 갖는 강인한 필터는 일반적인 칼만필터와 동일한 구조를 갖게 된다. 단지 측정 행렬과 측정 잡음의 공분산값을 수정하면 된다. 본 논문에서 제안한 강인한 전달정렬 기법의 성능을 분석하기 위해서 항체가 고기동 운항을 하면서 측정치에 시간 지연이 발생하는 경우를 가정하여 시뮬레이션을 수행하였고 제안한 기법의 강인성을 검증하였다.