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Nickel oxalate nanostructures for supercapacitors
Jung, Insoo,Choi, Jinsub,Tak, Yongsug Royal Society of Chemistry 2010 Journal of materials chemistry Vol.20 No.29
<P>Herein, we describe a facile method to produce nickel oxalate nanostructures by chemical reaction of oxalic acid and a nickel foil in various organic solvents and water. Grass-like structures consisting of nickel oxalate are produced by the chemical reaction within 30 min for all solvents. Interestingly, nickel oxalate nanowires can be produced by the addition of a small amount of water in certain solvents. Annealing of nickel oxalate structures leads to formation of nickel oxide structures with a slight morphological change. Compositions of the nanostructures are investigated by TEM and FT-IR analyses. In addition, the supercapacitance of the nickel oxalate nanostructures is characterized, and the results show that they are superior to that of nickel oxide nanostructures.</P> <P>Graphic Abstract</P><P>The supercapacitance of the nickel oxalate structures, which are obtained by the immersion of nickel foils in organic solvents containing oxalic acid, is superior to that of the nickel oxide structures, which are produced by the annealing of the nickel oxalate structures. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0jm00279h'> </P>
Insoo Kim,Kikyoung Yi,이주희,Kyumin Kim,Soyoung Youn,서수연,Jiyeon Kim,Jung mun choi,정석훈 대한수면학회 2019 sleep medicine research Vol.10 No.2
Sleep Med Res > Volume 10(2); 2019 > Article Original Article Sleep Medicine Research (SMR) 2019; 10(2): 83-89. Published online: Dec 31, 2019 DOI: https://doi.org/10.17241/smr.2019.00451 Dysfunctional Beliefs about Sleep in Cancer Patients Can Mediate the Effect of Fear of Progression on Insomnia Insoo Kim, MD1, Kikyoung Yi, MD2, Joohee Lee, MD1, Kyumin Kim, MD1, Soyoung Youn, MD1, Sooyeon Suh, PhD3, Jiyeon Kim, PhD4, Jung Mun Choi, BA1, Seockhoon Chung, MD, PhD1 1Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea 2Department of Psychiatry, Yongin Mental Health, Yongin, Korea 3Department of Psychology, Sungshin Women’s University, Seoul, Korea 4Department of Art Therapy, Hanyang Cyber University, Seoul, Korea Correspondence: Seockhoon Chung, MD, PhD, Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, 86 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea, Tel +82-2-3010-3411, Fax +82-2-485-8381, E-mail schung@amc.seoul.kr Received Oct 21, 2019 Revised Nov 1, 2019 Accepted Nov 5, 2019 Copyright© 2019 The Korean Society of Sleep Medicine Abstract Background and Objective The role of the dysfunctional belief about sleep is important for the development of insomnia among cancer patients. This study intended to investigate whether dysfunctional belief about sleep mediates the relationship between fear of progression and insomnia in cancer patients. Methods Three hundred and thirty-seven cancer patients participated in our study. Dysfunctional belief about sleep, severity of insomnia, depression, fear of progression, and anxiety were measured using the following questionnaires: Cancer-related Dysfunctional Beliefs about Sleep (C-DBS); Insomnia Severity Index (ISI); Patient Health Questionnaire-9 (PHQ-9); Fear of Progression (FoP); and the state subcategory of State and Trait Anxiety Inventory (STAI). Path analysis was used to clarify the relationships among the variables. Since C-DBS consists of two items, i.e., Q1-immune & Q2-recurrence, we implemented an additional path analysis including these variables separately. Results C-DBS mediated the effect of FoP (β = 0.36, p < 0.001) and patient sex (β = 0.13, p = 0.009) on ISI. PHQ-9 (β = 0.32, p < 0.001) and STAI (β = -0.09, p = 0.071) had a direct influence on ISI scores. In our second path analysis, Q1-immune item mediated the effect of FoP (β = 0.19, p < 0.001) on ISI, and Q2-recurrence item mediated the effect of FoP (β = 0.23, p < 0.001) and patient sex (β = 0.09, p = 0.019) on ISI. Conclusions Our path analysis model indicated that C-DBS mediates the effect of FoP and patient sex on ISI. Our second path analysis results suggested that there could be an internal process of Q1 and Q2 item. Efforts to reduce dysfunctional beliefs should be considered as well as management of fear of progression for better sleep of cancer patients.
소정온,허지연,심혜진,김종원,나덕렬,이필휴,정선주,박문호,주인수,송미숙,김영호,묵인희 대한치매학회 2004 Dementia and Neurocognitive Disorders Vol.3 No.1
Background:Alzheimer's disease (Ad) is a neurodegenerative disorder that is rapidly increasing with the aging society, requiring a need for early diagnosis and prevention. However, diagnosis on AD has only been possible through limited methods such as neuropsychological examination or MRI. AD is characterized by deposition of senile plaques and neurofibrillary tangles in the brain. Aβ peptide in senile plaques seems to play a central role in the neuropathology of AD. Several biochemical markers for AD are available, including reduced Aβ protein, a change in ratio between Aβ40 and 42 and increased level of tau protein in the cerebrospinal fluid (CSF). Methods:This study analyzes anti-Aβ antibody from serums of AD patients using the ELISA. The levels of anti-Aβ antibody from patients with idiopathic Parkinson's disease or stroke and from normal control were compared to that of AD patients. Results:Our results showed a significantly lower anti-Aβ antibody level in AD compared to those with other neurological diseases or control. Conclusions:These data showed that the anti-Aβ antibody level in the serum may be used to diagnose the presence of AD.
정인수(Insoo Jung),진재민(Jaemin Jin),이동철(Dongchul Lee) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
To meet market needs for environment-friendly vehicles, diesel passenger vehicles should be developed to comply with lower fuel consumption and more stringent standards for exhaust emission. However, it is difficult to develop diesel combustion noise that has the trade-off relationship with fuel consumption and exhaust emission. Combustion noise seriously impacts on the perception of sound level and sound quality of vehicle interior noise. Generally, the combustion noise would be improved through developing methods as modifying engine components and optimizing injection parameters. However, displaying active responses to changes in factors such as engine aging and variations of fuel properties is difficult because these methods are based on an open-loop way to focus on the present status. To resolve this situation, closed-loop control by using engine vibration signal will be developed in the near future. This paper describes future technique and method to develop the combustion noise of a diesel engine.