Energy storage capabilities of nitrogen-enriched pyropolymer nanoparticles fabricated through rapid pyrolysis

Yun, Young Soo,Kim, Yu Hyun,Song, Min Yeong,Kim, Na Rae,Ku, Kyojin,An, Ji Su,Kang, Kisuk,Choi, Hyoung Jin,Jin, Hyoung-Joon Elsevier 2016 Journal of Power Sources Vol.331 No.-

<P><B>Abstract</B></P> <P>Nanostructured pyropolymers contain significant amounts of redox-active heteroatoms, have high specific surface areas, and a defective carbon microstructure, indicating good potential for pseudocapacitive charge storage. In this study, nitrogen-enriched pyropolymer nanoparticles (N-PNs-50) are fabricated from polyaniline nanotubes through rapid pyrolysis at 50 °C min<SUP>−1</SUP>. N-PNs-50 exhibit a nitrogen content of 9.8 wt%, a high specific surface area of 875.8 m<SUP>2</SUP> g<SUP>−1</SUP>, and an amorphous carbon structure with an I<SUB> <I>D</I> </SUB>/I<SUB> <I>G</I> </SUB> intensity ratio of 0.95. These unique characteristics lead to good electrochemical performances, in which reversible capacities of 660 and 255 mAh g<SUP>−1</SUP> are achieved for Li-ion and Na-ion storage, respectively, with favorable voltage characteristics (<1.5 V for Li-ions and <1.2 V for Na-ions). This study provides a more feasible production method for nitrogen-doped pyropolymers and their practicable electrochemical performances for use as an anode in energy storage devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Nanostructured pyropolymers (N-PNs-50) were fabricated by rapid pyrolysis. </LI> <LI> N-PNs-50 exhibited a nitrogen content of 9.8 wt% and amorphous carbon structure. </LI> <LI> N-PNs-50 exhibited a high specific surface area of 875.8 m<SUP>2</SUP> g<SUP>−1</SUP>. </LI> <LI> 660 and 255 mAh g<SUP>−1</SUP> were achieved for Li-ion and Na-ion storage, respectively. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Nitrogen-enriched pyropolymer nanoparticles (N-PNs-50) were fabricated from polyaniline nanotubes through rapid pyrolysis at 50 °C min<SUP>−1</SUP>, showing superior electrochemical performances.</P> <P>[DISPLAY OMISSION]</P>

Biodistribution and PET imaging of [¹⁸F]FMISO in mousecolon cancer xenografted mice

Seelam, Sudhakara Reddy,Lee, Ji Youn,Kim, Young Joo,Lee, Yun-Sang,Jeong, Jae Min Korean Society of Radiopharmaceuticals and Molecul 2015 Journal of radiopharmaceuticals and molecular prob Vol.1 No.2

Hypoxia is an important adverse prognostic factor for tumor progression and is a major cause of failure of radiation therapy. In case of short-term hypoxia, the metabolism can recover to normal, but if hypoxia persists, it causes irreversible cell damage and finally leads to death. So a hypoxia marker would be very useful in oncology. In particular, 2-nitroimidazole can be reduced to form a reactive chemical species, which can bind irreversibly to cell components in the absence of sufficient oxygen, thus, the development of radiolabeled nitroimidazole derivatives for the imaging of hypoxia remains an active field of research to improve cancer therapy result. 2-nitroimidazole based hypoxia marker, [$^{18}F$]FMISO holds promise for the evaluation of tumor hypoxia by Positron emission tomography (PET), at both global and local levels. In the present study, [$^{18}F$]FMISO was synthesized using an automatic synthesis module with high radiochemical purity (>99%) in 60 min. Immunohistochemical analysis using pimonidazole confirmed the presence of hypoxia in xenografted CT-26 tumor tissue. A biodistribution study in CT-26 xenografted mice showed that the increased tumor-to-muscle ratio and tumor-to-blood ratios from 10 to 120 min post-injection. In the PET study, [$^{18}F$]FMISO also showed increased tumor-to-muscle ratios from 10 to 120 min post-injection. In conclusion, this study demonstrates the feasibility and utility of [$^{18}F$]FMISO for imaging hypoxiain mouse colon cancer model using small animal PET.

방광 크롬친화세포종과 동반된 배뇨후 벼락두통

하윤석,강성진,허소영,이지현,김민정,김종국,김광수 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.1

Thunderclap headache is a hyperacute, severe headache that is so named because the pain strikes suddenly and severely, and is sometimes a sign of a medical emergency. We report a case of pheochromocytoma in the urinary bladder in a 48-year-old woman who presented with recurrent thunderclap headache after voiding and exercise. So we think thunderclap headache during or immediately after micturition may be an important diagnostic clue of bladder pheochromocytoma.

해안 잠재 친수여가공간 개발대상지에 대한 사례연구

민병형,이정환,정지윤 동아대학교 해양자원연구소 2000 硏究論文集 Vol.13 No.1

A study will be exalted of live quality that to use of Sea Front for new digging and development in the conceal of Sea Front as used always for live space. This summarize shows the following result. 1.Busan of decide to befroe time-table to development that seven area selected in the conceal of Sea Front to position of the Young Do , SeuㆍSahagu. 2.This seven area withen , A exercise ground area of a Dong sam don-Young Do of the study to development forms. As the proposed first case and second case to aid first case to will be canvass for superior to aid of SeaㆍCure resort 3.This seven area withen, a excrise ground area of Dong sam dong-Young Do Gu the study to development forms As the proposed first case and second case and first case to will be canvass for superior to aid of SeaㆍCure resort 4.A exercise ground area Dong sam dong - Young Do to aid of SeaㆍCure resort that through SeaㆍCure culture to offer, we will be again the SeaㆍSight-seeing city to used the SeaㆍSight - seeing. 5.SeaㆍCure resort area to aid of in the development plans to very suit for used a place and space to disposition, plans to disposition of institute objects for odd used.

비만 관련인자와 ALT 증가와의 관련성

민홍기,이정규,이하린,박현지,김윤진,이상엽 부산대학교 병원 암연구소 2009 부산대병원학술지 Vol.- No.25

화병척도와 연구용 화병진단기준 개발

민성길,서신영,조윤경,허지은,송기준 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.2

Objectives The aim of this study was to identify the characteristic symptoms for diagnosis of Hwabyung (HB), a culture-related anger syndrome in Korea; to construct a rating scale for HB and test its validity and reliability; and propose diagnostic criteria for HB. Methods Subjects were male and female Korean patients, who were diagnosed following Structured Clinical Interview (SCID) as having depressive disorders, anxiety disorders and somatoform disorders and who reported as having self-labeled HB. A HB Scale was constructed with 22 of the most common symptoms of HB as identified by previous studies. The HB scale's inter-rated reliability was tested with 60 subjects. Its validity was tested by comparison between a HB only group(n=47) and depressive disorder only group (n=44). Logistic regression analysis was conducted to make a predictive model of HB. Based on these results diagnostic criteria for HB was proposed. Results Inter-rated reliability in each of all the items and the total score of the HB Scale were statistically significant. The HB scale differentiated HB from depressive disorder with statistical significance. In logistic regression analysis, the ability of the HB model to predict symptoms of heat sensation, ukwool/boon (feeling of unfairness), and subjective anger was high with sensitivity of 80.0%, specificity of 88.4% accuracy of 84.1% and area under ROC of 0.92. Based on these results and information from previous research, diagnostic criteria of HB were formulated. Conclusion The HB Scale was found to be reliable and valid. Consequently, diagnostic criteria of HB were proposed, to include subject anger, "kwool/boon" (Feeling of unfairness), expressed anger, heat sensation, hostility, "haan", pushing-up in the chest, epigastric mass, respiratory stuffiness, palpitation, dry mouth, sighing, racing thoughts, and lamentation.

혐오자극과 모델링 및 언어적 지시가 발달지체 아동의 상동행동에 미치는 효과 : 사례연구

한현민,함소희,김윤선,지지영,홍희영 대진대학교 교육연구소 2000 교육연구 Vol.2 No.1

The experiment was undertaken to determine the combined effects of aversive, modeling, and verbal instruction on the self-stimulatory stereotyped benavior exhibited by a three-year two-month old with developmental delay, The behavioral interventions were consisted of lemon juice(aversive), behavioral rehearsal(moleling), verbal instruction(prompting), and defferential reinforcement of incompatible behavior (DRI), and continued over 73 sessions. The data gathered across multitreatments design (A-BCD-A-BD-DE) were visually analyzed. The results revealed that all the treatments reduced the occurrences of stereotyped behavior, the significant differences among any interventions were not found, and more importantly, the behavior effects were maintained.

레티노인산이 배양 각질형성세포의 사이토카인 생성에 미치는 영향

김지윤,정승용,오성민,김수찬 大韓皮膚硏究學會 2003 大韓皮膚硏究學會誌 Vol.10 No.4

SMAS 거상술 및 Malar Fat Pad의 수지박리를 이용한 안면거상술

강연웅,유원민,김지명,박병윤 大韓成形外科學會 2001 Archives of Plastic Surgery Vol.28 No.5

C6 glia 세포에서 유도성 Nitric Oxide Synthase 유전자 발현조절에 관한 연구

배진영,허강민,배소현,박지선,이충재,이재흔,석정호 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

To investigate transcriptional regulation of iNOS gene by LPS and cytokines, the production of NO, expression of iNOS mRNA and protein, binding activity of nuclear factor-kappa B(NF-kB), and promoter activity of iNOS gene were examined in rat C6 glial cells. LPS, interferon-gamma(IFN-γ), and tumor necrosis factor-alpha (TNF-α) stimulated the production of NO, which was increased synergistically by co-treatment. By the treatment of LPS, iNOS mRNA expression was initiated at 1 h, markedly increased by 3 h, and decreased gradually afterward. iNOS mRNA expression was markedly enhanced by mixture of LPS, IFN-γ and TNF-α. iNOS protein synthesis was increased by the treatment of mixture LPS and cytokine mixture. Treatment of LPS stimulated NF-kB activation, and the activation reached to the maximum level at 30 min, and the treatment of mixture of LPS and cytokines increased the activation. To determine the effect of NF-kB binding activity on iNOS promoter activation, CAT assay was performed. iNOS promoter activity was increased by the treatment with LPS for 5.5 h, and further increased by the combined treatment with LPS and cytokines. These results suggest that NF-kB activation by LPS and cytokines may play a significant role in the induction of the iNOS gene.