Hierarchically nanoporous pyropolymer nanofibers for surface-induced sodium-ion storage

Yoon, Hyeon Ji,Lee, Min Eui,Kim, Na Rae,Yang, Seung Jae,Jin, Hyoung-Joon,Yun, Young Soo Pergamon Press 2017 Electrochimica Acta Vol. No.

<P><B>Abstract</B></P> <P>Surface-driven charge storage materials based on both electrochemical double layer (EDL) formation and pseudocapacitive behavior can deliver high energy and power capabilities with long-lasting cycling performance. On the other hand, the electrochemical performance is strongly dependent on the material properties, requiring sophisticated electrode design with a high active surface area and a large number of redox-active sites. In this study, hierarchically nanoporous pyropolymer nanofibers (HN-PNFs) were fabricated from electrospun polyacrylonitrile nanofibers by simple heating with KOH. The HN-PNFs have a hierarchically nanoporous structure and an exceptionally high specific surface area of 3,950.7m<SUP>2</SUP> g<SUP>−1</SUP> as well as numerous redox-active heteroatoms (C/O and C/N ratio of 10.6 and 16.8, respectively). These unique material properties of HN-PNFs resulted in high reversible Na-ion capacity of ∼292mAhg<SUP>−1</SUP> as well as rapid kinetics and stable cycling performance in the cathodic potential range (1-4.5V vs. Na<SUP>+</SUP>/Na). Furthermore, energy storage devices based on HN-PNFs showed a remarkably high specific energy of ∼258 Wh kg<SUP>−1</SUP> at ∼245Wkg<SUP>−1</SUP> as well as a high specific power of ∼21,500Wkg<SUP>−1</SUP> at ∼78 Wh kg<SUP>−1</SUP>, with long and stable cycling behaviors over 2,000 cycles.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hierarchically nanoporous pyropolymer nanofibers (HN-PNFs) were fabricated. </LI> <LI> HN-PNFs have a high specific surface area of ∼3,950m<SUP>2</SUP> g<SUP>−1</SUP> and numerous heteroatoms. </LI> <LI> HN-PNFs exhibit high capacities of ∼292mAhg<SUP>−1</SUP> and great rate/cycling performances. </LI> <LI> High energy (258Whkg<SUP>−1</SUP>) and high power (21,500Wkg<SUP>−1</SUP>) are achieved. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Hierarchically nanoporous pyropolymer nanofibers (HN-PNFs) fabricated from electrospun polyacrylonitrile nanofibers by simple heating with KOH exhibited high electrochemical performance for Na-ion storage.</P> <P>[DISPLAY OMISSION]</P>

Spontaneous Resolution of Nontraumatic Acute Spinal Subdural Hematoma

Yang, Na-Rae,Kim, Sang-Jin,Cho, Yong-Jae,Cho, Do-Sang The Korean Neurosurgical Society 2011 Journal of Korean neurosurgical society Vol.50 No.3

Spinal subdural hematoma (SSDH) is an extremely uncommon condition. Causative factors include trauma, anticoagulant drug administration, hemostatic disorders, and vascular disorders such as arteriovenous malformations and lumbar punctures. Of SSDH cases, those that do not have any traumatic event can be considered cases of nontraumatic acute spinal subdural hematoma, which is known to have diverse clinical progress. Treatment typically consists of surgical decompression and cases in which the condition is relieved with conservative treatment are rarely reported. We report two nontraumatic acute spinal subdural hematoma patients who were successfully treated without surgery.

천막 수막종으로 오인했던 결핵종의 치료

양나래(Na-Rae Yang),서의교(Eui-Kyo Seo),구혜수(Hye Soo Koo) 대한두개저학회 2010 대한두개저학회지 Vol.5 No.2

We report the case of a 44-year-old woman who presented with a headache and right sixth cranial nerve palsy. The lesion mimicked a tentorial meningioma in the brain and was investigated using computed tomography and magnetic resonance imaging. Gross total resection was achieved using a subtemporal approach. Histologic examination of the mass revealed the typical tuberculoma such as granulomas with caseous necrosis. Postoperative antituberculous medication led to complete resolution of neurological symptoms and radiological examinations. Intracranial tuberculoma is an uncommon disease. Early diagnosis and adequate treatment is important in postoperative prognosis.

리좀(Rhizome) 개념을 도입한 교회 건축 공간에 관한 연구

양나래(Yang, Na-Rae) 한국실내디자인학회 2017 한국실내디자인학회 학술대회논문집 Vol.2017 No.10

The various components of modern society relate to each other as a network. These organic structures feature uncertainties and unpredictabilities, forming a new paradigm of modern society. The concept of Gilles Deleuze"s "Rhizome", which is a way of thinking for seeing objects from the perspective of flow and relationships, is similar to the characteristics of the organic structure of modern society. In modern architecture, there have been attempts to define architectures in relation to the various components of the city. This study defines the typical "rhizomatic spatial components" through analyzing these attempts about the rhizomatic space. In this study, architectural spatial components are classified into four categories : layout, program, circulation, and boundary. Based on these four categories, "rhizomatic spatial components" are defined as four elements: nonhierarchical layout, void program, selective wandering circulation, blurred boundary. In addition, this study is expected a paradoxical effect of applying the "rhizomatic spatial components" to church architecture, which is representative of the hierarchical space against the rhizomatic space. And it is intended to demonstrate the specific realization of the rhizomatic space.

임상 : 상측뇌실 종양의 수술적 치료

양나래 ( Na Rae Yang ),진성철 ( Sung Chul Jin ),서의교 ( Eui Kyo Seo ) 대한뇌종양학회 2011 대한뇌종양학회지 Vol.10 No.2

Objective: Lateral ventricular tumors are rare lesions of the central nervous system. Since most tumors are benign or low grade, good outcomes can be achieved with complete removal. However, optimal surgical management in lateral ventricle tumors remains controversial. We review six cases of patients with these lesions treated with a surgical approach on the basis of the tumor location. Methods: Six patients underwent surgery for lateral ventricle tumors. The transcortical approach was used in five patients, and the transcallosal approach was used in one patient. Transcortical approaches are frontal transcortical, middle temporal gyrus, and posterior parietal transcortical approaches. And we operated one patient with atypical meningioma of frontal horn and body by anterior interhemispheric transcallosal approach. Results: Gross total resection was performed in five patients. There was the only surgical morbidity that the tumor bed operated was bled, and the outcome of the patient remained poor. Two visual field deficits were developed transiently, however they were recovered during follow-up period. Conclusions: Lateral ventricle tumors can be treated best by careful selection of the approach according to the specific location, size, and vascularization of these tumors.

근무형태와 기능성 소화장애 및 월경이상 관련성 연구

양나래 ( Na Rae Yang ),조정훈 ( Jung Hoon Cho ),이진무 ( Jin Moo Lee ),이창훈 ( Chang Hoon Lee ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ) 대한한방부인과학회 2010 大韓韓方婦人科學會誌 Vol.23 No.2

여고생의 소화기능 및 BMI에 따른 월경통 차이 연구

양나래 ( Na Rae Yang ),조정훈 ( Jung Hoon Cho ),이진무 ( Jin Moo Lee ),이창훈 ( Chang Hoon Lee ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ) 대한한방부인과학회 2009 大韓韓方婦人科學會誌 Vol.22 No.4

유방 통증과 소양증을 주소로 하는 유방 켈로이드 환자 치험 1례 보고

양나래 ( Na Rae Yang ),이진무 ( Jin Moo Lee ),조정훈 ( Jung Hoon Cho ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ),이창훈 ( Chang Hoon Lee ) 대한한방부인과학회 2011 大韓韓方婦人科學會誌 Vol.24 No.3

우고닌-하이드로젤 지지체의 파골세포 분화 억제 효과

양나래 ( Na Rae Yang ),이진무 ( Jin Moo Lee ),이창훈 ( Chang Hoon Lee ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ) 대한한방부인과학회 2011 大韓韓方婦人科學會誌 Vol.24 No.4

2000년대 천만 사극 영화의 스토리텔링 구조와 전략

양나래(Yang, Na Rae) 건국대학교 글로컬문화전략연구소 2015 문화콘텐츠연구 Vol.0 No.6

한국 영화는 지난 2012년 이후 3년 연속 1억 누적 관객을 동원하며, 천만 관객이 넘는 ‘메가히트’ 영화를 매년 제작하고 있다. 여기서 ‘천만’이라는 관객수는 인구통계학적으로나 비교문화학적으로 대단히 높은 수치를 나타내며, 이러한 관객 동원은 곧 영화의 영향력을 짐작케 한다. 본 연구는 성공한 영화의 ‘흥행성’에 대한 궁금증에서 출발한다. 선행 연구를 통해 ‘흥행’, ‘천만’ 영화와 관련된 기존 연구를 파악했고, 그 과정에서 세 편의 천만 사극 영화를 기준으로 흥행 영화를 분석했다. 또한 ‘대중화 코드’와 대중의 공감에 주목해, 그들의 집단적 감정을 자극하는 이야기를 흥행의 전제 조건으로 설정했다. 즉, 본 연구의 의의는 스토리텔링의 측면에서 영화의 매력 요인을 분석, 대중성을 갖춘 흥행영화의 공통적 이야기 코드와 그 전략을 파악함에 있다. 방법론으로는 사극 영화 분석을 위한 스토리 분류 체계 모델을 제시해 연구의 객관성을 높이고자 했다. 이에 대중들이 반복적으로 소구하는 이야기의 원형적 요소에 주목해, 모티프를 중심으로 한 ‘스토리헬퍼의 205개 모티프 분류 체계’를 참고했다. 동시에 ‘문화재 이야기 자원의 분류 체계’를 함께 참고해 사극이라는 특수한 장르의 주제 분류를 더욱 세분화했다. 이를 바탕으로 인물 관계망에 따른 인물 분석과, 시퀀스에 따른 사건 · 배경 분석을 각각 진행해 세 편의 사극영화의 구조를 정밀히 분석했다. 앞선 분석의 결과를 토대로 세 편의 사극 영화에 내재된 공통 코드를 정리하고, 스토리텔링 전략에 대해 제언하고자 했다. 이를 통해 파악한 사극 영화의 스토리텔링 전략을 요약하면 다음과 같다. 첫째, 왕조사관이 아닌 민중사관에 입각한 상상력으로써 접근하며 둘째, 평범한 소시민적 영웅을 내세우고, 셋째, 계급의식 및 권위의식의 전복, 마지막으로 현실과의 연관성을 유지하며 동시에 민중에의 접근을 강조한다. 동시에 특수 모티프를 적절히 활용해 소재의 차별성을 강조하면서 이를 전략화한다고 정리할 수 있다. 본 연구는 사극에 적합한 스토리 분류 체계를 제시하고, 해당 모델에 맞게 영화를 분석한 논문이라는 점에 의의가 있다. 이를 중심으로 스토리텔링 특징을 도출해 영화 기획의 단계에서 문화콘텐츠적인 통찰을 제시하고자 한다. The Korean cinema has drawn over 0.1 billion viewers for the last three years since 2012, producing ‘mega-hit’ films recording over ten million viewers every year. Here, the number ‘ten million’ is a very high figure both demographically and cross-culturally, which indicates the influence of films. This study starts from the ‘popularity’ of successful films. Existing studies related to popular films were examined through preceding research, and during the process, three popular Korean historical films were analyzed. In addition, stories stimulating emotions of the public were set as the precondition of popularity focusing on the ‘popularization code’ and people’s sympathy. That is, the purpose of this study was to analyze the factors of the charm of films in the aspect of storytelling, and grasp the common story code and related strategies of popular films. For methodology, a model of story classification system for analyzing historical films was suggested to raise objectivity of the research. To this end, ‘Story helper’s classification system of 205 motifs’ was examined focusing on the prototype elements of stories repeatedly told by people. At the same time, ‘The classification system of the resources of cultural stories’ was examined to classify the themes of the special genre, historical drama, more in detail. Based on it, a character analysis according to the character relational network and an incident/background analysis were conducted to closely analyze the structure of the three historical films. Based on the analysis results, the common code included in the three historical films was arranged and the storytelling strategy was suggested. The storytelling strategy of the historical films grasped through this process can be summarized as below. The storytelling strategy, first, approaches with imagination based on the public view of history, not on the dynastic view of history, second, displays ordinary petty bourgeois heroes, third, shows subversion of class consciousness and authority consciousness, and lastly, maintains the relationship with the reality and emphasizes the approach to the public. In addition, it properly utilizes special motifs and emphasizes the differentiation of materials. This study has a meaning in that it suggested the story classification system appropriate for historical drama and analyzed films considering the characteristics of this genre. Thus, this study is expected to contribute to penetrating into the cultural contents in the stage of planning after deriving the characteristics of storytelling.