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Choi, Nari,Han, Jongmin Elsevier 2018 Journal of differential equations Vol.264 No.8
<P><B>Abstract</B></P> <P>In this paper, we study an elliptic equation arising from the self-dual Maxwell gauged O ( 3 ) sigma model coupled with gravity. When the parameter <I>τ</I> equals 1 and there is only one singular source, we consider radially symmetric solutions. There appear three important constants: a positive parameter <I>a</I> representing a scaled gravitational constant, a nonnegative integer <SUB> N 1 </SUB> representing the total string number, and a nonnegative integer <SUB> N 2 </SUB> representing the total anti-string number. The values of the products a <SUB> N 1 </SUB> , a <SUB> N 2 </SUB> ∈ [ 0 , ∞ ) play a crucial role in classifying radial solutions. By using the decay rates of solutions at infinity, we provide a complete classification of solutions for all possible values of a <SUB> N 1 </SUB> and a <SUB> N 2 </SUB> . This improves previously known results.</P>
Protective Effects of Hyperoside against Carbon Tetrachloride-Induced Liver Damage in Mice
Choi, Jun-Ho,Kim, Dong-Wook,Yun, Nari,Choi, Jae-Sue,Islam, Md. Nurul,Kim, Yeong-Shik,Lee, Sun-Mee American Chemical Society and American Society of 2011 Journal of natural products Vol.74 No.5
<P>In this study, the hepatoprotective effects of hyperoside (<B>1</B>), a flavonoid glycoside isolated from <I>Artemisia capillaris</I>, have been examined against carbon tetrachloride (CCl<SUB>4</SUB>)-induced liver injury. Mice were treated intraperitoneally with vehicle or <B>1</B> (50, 100, and 200 mg·kg<SUP>−1</SUP>) 30 min before and 2 h after CCl<SUB>4</SUB> (20 μL·kg<SUP>−1</SUP>) injection. Levels of serum aminotransferases were increased 24 h after CCl<SUB>4</SUB> injection, and these increases were attenuated by <B>1</B>. Histological analysis showed that <B>1</B> prevented portal inflammation, centrizonal necrosis, and Kupffer cell hyperplasia. Lipid peroxidation was increased and hepatic glutathione content was decreased significantly after CCl<SUB>4</SUB> treatment, and these changes were reduced by administration of <B>1</B>. Protein and mRNA expression of tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and heme oxygenase-1 (HO-1) and nuclear protein expression of nuclear factor erythroid 2-related factor 2 (Nrf2) significantly increased after CCl<SUB>4</SUB> injection. Compound <B>1</B> suppressed TNF-α, iNOS, and COX-2 protein and mRNA expression and augmented HO-1 protein and mRNA expression and Nrf2 nuclear protein expression. These results suggest that <B>1</B> has protective effects against CCl<SUB>4</SUB>-induced acute liver injury, and this protection is likely due to enhancement of the antioxidative defense system and suppression of the inflammatory response.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jnprdf/2011/jnprdf.2011.74.issue-5/np200001x/production/images/medium/np-2011-00001x_0006.gif'></P>
NaRi Kim,SamuelSukHyun Hwang,JungSeok Choi,DaiJin Kim,Zsolt Demetrovics,Orsolya Kiraly,Katalin Nagygyorgy,Mark. D. Griffiths,SoYeon Hyun,HyunChul Youn,SamWook Choi 대한신경정신의학회 2016 PSYCHIATRY INVESTIGATION Vol.13 No.1
Objective-The Section III of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) proposed nine diagnostic criteria and five cut-point criteria for Internet Gaming Disorder (IGD). We aimed to examine the efficacy of such criteria. Methods-Adults (n=3041, men: 1824, women: 1217) who engaged in internet gaming within last 6 months completed a self-report online survey using the suggested wordings of the criteria in DSM-5. Major characteristics, gaming behavior, and psychiatric symptoms of IGD were analyzed using ANOVA, chi-square, and correlation analyses. Results-The sociodemographic variables were not statistically significant between the healthy controls and the risk group. Among the participants, 419 (13.8%) were identified and labeled as the IGD risk group. The IGD risk group scored significantly higher on all motivation subscales (p<0.001). The IGD risk group showed significantly higher scores than healthy controls in all nine psychiatric symptom dimensions, i.e., somatization, obsession-compulsion, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, and psychoticism (p<0.001). Conclusion-The IGD risk group showed differential psychopathological manifestations according to DSM-5 IGD diagnostic criteria. Further studies are needed to evaluate the reliability and validity of the specific criteria, especially for developing screening instruments.
REMARKS ON NONTOPOLOGICAL SOLUTIONS IN THE SELF-DUAL CHERN-SIMONS GAUGED O(3) SIGMA MODELS
Choi, Nari,Han, Jongmin Korean Mathematical Society 2016 대한수학회보 Vol.53 No.3
In this paper, we prove the existence of nontopological solutions to the self-dual equations arising from the Chern-Simons gauged O(3) sigma models. The property of solutions depends on a parameter ${\tau}{\in}[-1,1]$ appearing in the nonlinear term. The case ${\tau}=1$ lies on the borderline for the existence of solutions in the previous results [4, 5, 7]. We prove the existence of solutions in this case when there are only vortex points. Moreover, if $-1{\leq}{\tau}$<1, we establish solutions which are perturbed from the solutions of singular Liouville equations.
Remarks on nontopological solutions in the self-dual Chern-Simons gauged $O(3)$ sigma models
Nari Choi,한종민 대한수학회 2016 대한수학회보 Vol.53 No.3
In this paper, we prove the existence of nontopological solutions to the self-dual equations arising from the Chern-Simons gauged $O(3)$ sigma models. The property of solutions depends on a parameter $\tau \in [-1,1]$ appearing in the nonlinear term. The case $\tau=1$ lies on the borderline for the existence of solutions in the previous results \cite{CH13R2, CH11, CHLLi}. We prove the existence of solutions in this case when there are only vortex points. Moreover, if $-1\le \tau<1$, we establish solutions which are perturbed from the solutions of singular Liouville equations.
Choi Jae-Phil,Lee Jung-Hui,An Jong Mi,Kim Jihyun,Won Nari,Choi Young Hwa 대한감염학회 2023 Infection and Chemotherapy Vol.55 No.2
In 2005, the Korea Disease Control and Prevention Agency (KDCA) launched “Health Care Facility Counseling Project on People Living with human immunodeficiency virus (HIV)” funded by the private-subsidy project for the prevention of acquired immune deficiency syndrome (AIDS) and sexually transmitted diseases to provide people living with HIV (PLWH) psychological support and counsel them about the disease and antiretroviral therapy (ART). Currently, 38 counseling nurse specialists work at 28 healthcare facilities for patient care. Of all PLWH in Korea, 71.9% received benefits from the Counseling Project. Adherence to ART medication (>95.0%), level of depression or anxiety, counseling coverage, and viral load status were monitored as common project indicators. Various specialized programs have been implemented in diverse facilities. This project has played a pivotal role in HIV care continuum and viral suppression policies, resulting in 95.9% of PLWH maintaining undetectable status (<40 copies/ml) in 2021. In this review, we present the chronology and fulfillment of this project, which will be an essential step for future planning in the context of aging and the chronic comorbid nature of HIV/AIDS.
UN이 추구하는 지속가능발전교육이 특수교육에 주는 함의 연구
최나리 ( Choi Nari ) 대구대학교 한국특수교육문제연구소 2021 특수교육저널 : 이론과 실천 Vol.22 No.3
[Purpose] The purpose of this study was to identify the implications of education related to sustainable development pursued by the UN for special education. [Method] The sustainable development act of South Korea and documents related to education and goals for sustainable development were analyzed. [Results] The concepts of goals and education of sustainable development were reviewed. The implications of goals and education for sustainable development by the UN for special education were identified. [Conclusion] Suggestions for sustainable development goals and education for future research into special education are provided.
최나리(Nari Choi),Jean Crockett(Jean Crockett ) 한국특수교육학회 2019 한국특수교육학회 학술대회 Vol.2019 No.-
연구목적: 본 연구의 목적은 한국 일반학교 교장의 행정적 지원에 관한 특수교사의 인식을 알아보기 위한 행정적 지원 설문 문항의 구성 타당도를 알아보고 한국의 특수교사가 인식하는 학교장의 행정적 지원의 실제적 정도 및 중요도를 조사하는 것이다. 연구방법: 설문문항은 House(1981)의 4가지 사회적 지원인, 정서적, 평가적 정보적, 도구적 지원을 바탕으로 구성되었으며 한국의 한 도의(행정구역) 일반학교에 근무하는 141명의 특수교사가 설문조사에 응답하였다. 연구결과: 탐색적 요인분석으로 행정적 지원 설문문항의 구성타당도를 검증하였다. House(1981)의 4가지 지원은 특수교사들에게 중요한 것으로 나타났다. 하지만 실제로 받고 있는 행정적 지원에 관해서는 일반적 지원으로 하나의 지원 요인만 나타났다. 특수교육 교사들은 정서적 지원과 도구적 지원이 평가적 지원과 정보적 지원보다 중요하다고 인식하였다. 대응표본 t-test에 따르면 실제적 행정적지원과 행정적지원의 중요도 사이에 통계적으로 유의미한 차이가 있었다. 특수교사들은 특수교육에 대한 학교장의 인식 및 지식의 확장, 그리고 일반학교에서 일하는 특수교사들의 적절한 업무량을 위한 지침의 필요성 등의 의견을 표현하였다. 결론: 본 연구는 특수교사가 인식하는 학교장의 지원에 관한 연구로 이 연구의 결과는 행정적 지원에 관한 한국의 정책을 개선 및 특수교사들에 대한 지원에 관해 정책전문가들에게 알릴 수 있는 기초자료로 제공될 수 있다.