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      • 2P-532: Preparation and Characterization of Ordered Mesoporous Mixed Metal Oxides with NiO

        오현정,박수빈,전보경,박귀옥,김지만 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1

        Mesoporous metal oxides have been extensively investigated for their wide application such as electrochemistry and catalyst. Their high specific surface area and buffering against volume expansion could enhance the electrochemical, catalytic performance comparing to existing bulk metal oxide. Nickel Oxides are known as have superior properties such as its high theoretical capacity(718mAh/g), high density (6.81g/㎤), nontoxicity and low cost. In addition, binary metal oxides are enable to overcome the drawbacks of single metal oxides and improve the intrinsic properties of each component such as electrochemical reactivity and mechanical stability. In this study, we synthesized the various NiO based mesoporous mixed metal oxide via nano-replication method using mesoporous silica(KIT-6, cubic, Ia3d space group mesostructure).

      • KCI등재
      • KCI등재

        Overexpression of POSTN in Tumor Stroma Is a Poor Prognostic Indicator of Colorectal Cancer

        오현정,강경훈,배정모,Xian-Yu Wen,조남윤,김정호 대한병리학회 2017 Journal of Pathology and Translational Medicine Vol.51 No.3

        Background: Tumor microenvironment has recently drawn attention in that it is related with tumor prognosis. Cancer-associated fibroblast also plays a critical role in cancer invasiveness and progression in colorectal cancers. Periostin (POSTN), originally identified to be expressed in osteoblasts and osteoblast-derived cells, is expressed in cancer-associated fibroblasts in several tissue types of cancer. Recent studies suggest an association between stromal overexpression of POSTN and poor prognosis of cancer patients. Methods: We analyzed colorectal cancer cases for their expression status of POSTN in tumor stroma using immunohistochemistry and correlated the expression status with clinicopathological and molecular features. Results: High level of POSTN expression in tumor stroma was closely associated with tumor location in proximal colon, infiltrative growth pattern, undifferentiated histology, tumor budding, luminal necrosis, and higher TNM stage. High expression status of POSTN in tumor stroma was found to be an independent prognostic parameter implicating poor 5-year cancer-specific survival and 5-year progression-free survival. Conclusions: Our findings suggest that POSTN overexpression in tumor stroma of colorectal cancers could be a possible candidate marker for predicting poor prognosis in patients with colorectal cancers.

      • KCI등재

        아동권리에 대한 어머니의 인식이 언어통제유형에 미치는 영향

        오현정,문혜련 한국유아교육ㆍ보육복지학회 2020 유아교육·보육복지연구 Vol.24 No.3

        This study was undertaken to investigate the influence of the levels of awareness of child rights on the types of language control in mothers with 5 years old children.. The subject of the study was 194 mothers with 5 years old children who are in six early childhood education institutions located in Gyeonggi-do. The obtained experimental results are as follows. First, there was a statistically significant negative correlation between the mother's awareness of children's rights and the imperative language control types, and the recognition of protection rights also had a significant negative correlation with the relationship between the status language control types. Second, it was found that the mother's perception of protection rights showed a significant negative influence on the imperative language control type and the status language control type. In conclusion, it was confirmed in the present study that especially, mother's perception of protection rights among children's rights was closely related to mother's language control type. These findings suggests the importance of vitalizing education for improving mothers' awareness of child rights. especially about children's rights and public relations activities for the psychological and physical protection of infants without discrimination. 본 연구의 목적은 만 5세 자녀를 둔 어머니를 대상으로 아동권리에 대한 인식 수준이 언어통제유형에 미치는 영향을 알아보는 데 있다. 연구대상은 경기도에 위치한 유아교육기관 6곳에 재원하고 있는 만 5세 자녀를 둔 어머니 194명이다. 연구결과는 다음과 같다. 첫째, 어머니의 아동권리에 대한 인식과 명령적 언어통제유형 간에 통계적으로 유의한 음의 상관관계가 있었으며, 보호권에 대한 인식은 지위적 언어통제유형 간의 관계에서도 유의한 음의 상관관계가 나타났다. 둘째, 어머니의 보호권에 대한 인식은 명령적 언어통제유형과 지위적 언어통제유형에 유의한 음의 영향을 주는 것으로 나타났다. 결론적으로 어머니의 아동권리 중 특히 보호권에 대한 인식은 어머니의 언어통제유형과 밀접한 관계가 있음이 확인되었다. 이는 어머니의 아동권리에 대한 인식 특히 차별하지 않고 유아의 심리적⋅신체적 보호를 위한 아동권리교육 및 홍보활동 활성화의 중요성을 시사한다.

      • KCI등재

        Selective Attention in L1 Korean and L2 English Sentence Listening as Reflected by Word Recall

        오현정,최문홍 한국영어학회 2014 영어학 Vol.14 No.3

        In this study, we investigated second language learners’ attentional patterns in native (L1) and nonnative (L2) language processing as reflected in the grammatical and positional properties of words that they recalled after listening to a group of sentences. Ninety Korean high school students at three different L2 English proficiency levels listened to a list of unrelated sentences and then wrote down all the words that they could recall. It was found that the participants recalled nouns most frequently in both L1 and L2 sentences. The tendency was much greater in L2 listening than in L1 listening. Most notably, advanced learners were better able to recall verbs than lower-level groups while differences in the other categories were not very significant. Moreover, advanced learners tended to substitute semantically related ones for the target words, but less proficient learners more often supplied phonetically similar variants. These results provide support for the idea that L2 learners’ attentional patterns considerably vary as a function of proficiency, and so awareness raising and focused practice can facilitate their adaptation of attention required for the development of L2 listening ability.

      • KCI등재

        토끼의 중간뇌 중심회색질에서 Calbindin-D_(28K)와 NADPH-Diaphorase의 분포상

        오현정,김상훈,김학렬,박상학,박사훈,신혜랑,정성윤,이문인 대한신경정신의학회 2011 신경정신의학 Vol.50 No.3

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

        Objectives We attempted to compartmentalize the periaqueductal gray (PAG) of the rabbit in terms of the different distribution patterns between NADPH-diaphorase (NADPHd)- and calbindin D28K (CB)-positive neurons. Methods Immunohistochemistry and immunofluorescent labelling for CB and histochemistry for NADPHd were carried out on coronally-sectioned midbrain slices of the rabbit. Results NADPHd-positive neurons were selectively localized in the dorsolateral (DL), the middle one-third of the lateral (L), the dorsal half of the ventrolateral (VLd) PAG, and the supraoculomotor cap nucleus (Su3C). Clusters of CB-immunoreactive perikarya marked the dorsal half of DL (DLd), Su3C, the ventral one-third of L, and the ventral half of the ventrolateral (VLv) PAG. Double labelling for NADPHd and CB revealed that two markers labelled different neuronal groups in DLd and Su3C subdivisions. Conclusion The present data suggest that NADPHd and CB can be regarded as reliable neurochemical markers to reveal the longitudinally-columnar organization within the PAG and to subdivide each columnar area. Objectives We attempted to compartmentalize the periaqueductal gray (PAG) of the rabbit in terms of the different distribution patterns between NADPH-diaphorase (NADPHd)- and calbindin D28K (CB)-positive neurons. Methods Immunohistochemistry and immunofluorescent labelling for CB and histochemistry for NADPHd were carried out on coronally-sectioned midbrain slices of the rabbit. Results NADPHd-positive neurons were selectively localized in the dorsolateral (DL), the middle one-third of the lateral (L), the dorsal half of the ventrolateral (VLd) PAG, and the supraoculomotor cap nucleus (Su3C). Clusters of CB-immunoreactive perikarya marked the dorsal half of DL (DLd), Su3C, the ventral one-third of L, and the ventral half of the ventrolateral (VLv) PAG. Double labelling for NADPHd and CB revealed that two markers labelled different neuronal groups in DLd and Su3C subdivisions. Conclusion The present data suggest that NADPHd and CB can be regarded as reliable neurochemical markers to reveal the longitudinally-columnar organization within the PAG and to subdivide each columnar area.

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