Chromoblastomycosis in China

Chunyang Li 대한의진균학회 2011 대한의진균학회지 Vol.16 No.4

Medical mycology has gone through five distinct eras: 1) Fungi causing dermatophytoses, 2) Discovery of rare and fatal systemic mycoses, 3) Realization that fungi cause common and subclinical diseases, 4)AIDS and the era of the compromised host, 5) Broad-spectrum antifungals with few side effects. Chromoblastomycosis caused by a group of dematiaceous fungi is a common disease in china. To date almost 500 cases have been repoted. This article aims to introduce epidemiology, microbiology, clinical features, laboratory diagnosis and treatment of chromoblastomycosis in china.

중국계 결혼이주여성의 자녀 모어 교육에 관한 연구

이춘양(Chunyang Li),박미숙(Misuk Park) 인문사회과학기술융합학회 2018 예술인문사회융합멀티미디어논문지 Vol.8 No.3

본 연구의 목적은 중국계 결혼이주여성들이 자신의 모국어인 중국어를 자녀들에게 제2언어로 교육 하지 못하는 원인을 그들의 경험을 통하여 탐색하고 이에 대한 개선방안을 제시하는 것이다. 이를 위 해 2017년 3월부터 2017년 6월까지 한국 거주한지 10년 이상 된 중국인 결혼이주여성 4명을 대상으로 심층인터뷰를 하고 그 내용을 분석하였다. 분석한 결과 결혼이주여성들이 자녀들에게 자신의 모국어 를 교육하지 못하는 요인은 크게 네 가지로 나타났다. 첫째, 결혼이주여성 자신이 한국 환경에 적응 하기 바빠 어려서부터 자녀에게 모어 가르치는 것을 소홀히 하였다. 둘째, 자녀들이 한국에서 살아가 야하기 때문에 중국어보다 한국어교육에 더 많이 신경 쓰고 있었다. 셋째, 어머니 나라의 부정적인 인식 때문에 어머니의 모어를 배우려하지 않았다. 넷째, 한국인들의 부정적인 인식 때문에 당당하게 자신의 언어와 문화를 교육 시킬 수 없었다. 이와 같은 결과를 통하여 결혼이주여성들이 자녀들에게 모어를 가르쳐줄 수 있는 학습기회와 환경을 마련되길 기대한다. teach their children to learn their mother tongue to second language and to present improvement plans about it. We have collected data mainly through in-depth-interview of four Chinese marriage immigrant women that have lived in Korea for more than 10 years from March to June, 2017. The results show that there are four environmental aspects why they do not teach their children to learn their mother tongue. First, their children are lack of access to learn Chinese. Second, their children do not want to learn Chinese because of the negative images of China in Korea. Third, Chinese marriage immigrant women are busy adjusting themselves to the Korean society so that they have no time to teach their children to learn Chinese. Lastly, Chinese marriage immigrant women are lack of confidence to teach their children to learn Chinese and Chinese culture, because it exist that Koreans have negative perceptions of other cultures. We hope that there will be opportunities for marriage immigrant women to teach their children to learn their mother tongue through this study.

후기청소년기 중국계 중도입국청소년 체류경험에 관한 연구

이춘양 ( Chunyang Li ),박미숙 ( Misuk Pak ) 성결대학교 다문화평화연구소 2017 다문화와 평화 Vol.11 No.3

본 연구의 목적은 중국계 중도입국청소년들의 체류와 관련된 경험을 탐색하고 이들의 체류와 관련된 정책 개선방안을 제안하는 것이다. 이를 위하여 2017년 3월부터 6월까지 중국계 중도입국청소년 5명을 대상으로 심층인터뷰를 진행하고 이를 체류동기와 체류의 어려움, 체류와 관련한 지원요구로 분석하였다. 연구결과 첫째, 중도입국청소년들의 한국 체류 동기는 엄마와 함께 살고픈 마음과 새 아빠에 대한 기대, 중국에서 혼자 생활하는 것이 싫어서, 또 자신의 새로운 꿈을 위해서, 그리고 돈을 벌기 위해 한국에 체류하고 싶어 했다. 둘째, 한국 체류의 어려움은 국적취득에 대한 어려움과 비자로 인한 경제활동의 제한, 한국인들의 차별적인 대우, 한국생활에 대한 정보의 부재로 드러났다. 셋째, 한국체류에 대한 지원요구는 초기 입국자에 대한 고려, 연동이 안 되는 중도입국 청소년 관련 프로그램, 진로와 관련한 다양한 정보제공, 일할 수 있는 기회제공으로 나타났다. 이러한 결과를 바탕으로 중도입국청소년 체류와 관련한 정책의 개선방안을 제시하였다. 본 연구를 통하여 중도입국청소년들의 한국사회에 잘 적응할 수 있는 토대가 마련되길 기대해본다. This qualitative research explores the experiences related to the immigrated children of multicultural families from China and propose ways to improve their retention policies. For this purpose, an in-depth interview has been conducted with mid-entry immigrant youths from March to June, 2017. Queries were focused on the analysis of the motivation for the stay in Korea, and residence difficulties of the mid-entry immigrant youths, as well as the support requirements related to residence, etc. The findings from the study suggest that after immigrating to Korea, firstly, the desire to stay in Korea of motivation is to live with their moms, for expectation of the father in law, being fed up with living alone in China. And then, because of their dreams that they want to stay in Korea and to accomplish their dreams. After, they can earn money to feed theirselves. Secondly, The difficulty of staying in Korea is that it is difficult to acquire the Korean nationality. In the economic activity has been greatly constrained because of the identity of the restrictions. And, being discriminated against by Koreans, and lack of access to information on life in Korea. Thirdly, the demand for support stranded in South Korea is based on considerations for early arrivals, unable to bind mid-entry immigrant youths related programs, various information related to the future, as well as provide some support on job opportunity for mid-entry immigrant youths. Based on these results, an improvement plan for the policy on stay-in of adolescent children entering the country is proposed. Through this study, we look forward to being able to adapt Korean children in Korean society to Korean society in Korean society.

고대한국사회에서의 다문화 사례 및 유형 -｢삼국사기｣·｢삼국유사｣를 중심으로-

이춘양(Li Chunyang),조지형(Cho Jihyeong) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.5

외국인 300만 시대의 한국은 고정 관념으로 인하여 타문화에 대한 배제, 외국인에 대한 편견, 다문화에 대한 두려움이 결국에는 다문화에 대한 부정적인 인식으로 전환되고, 자국민들의 다문화 수용성이 여전히 낮은 실정이다. 다문화 수용성을 향상 시키기 위하여 고정 관념을 타파하고 다문화에 대한 부정적 인식을 먼저 개선하여야 한다. 고대국가 대부분은 전쟁과 집단 이주, 무역·문화 교류 등으로 인하여 민족적 융합이 빈번하였으며 이는 전 세계적으로 존재하고 있는 보편적 특징이라 할 수도 있다. 한국 또한 그럴 것이라 가정하여 오늘날의 다문화의 시각으로 한국 고대 사회를 되돌아보고자, 연구자는 2018년 3월부터 12월까지 한국 고대사회 삼국사의 실상을 파악할 수 있는 삼국사기 및 삼국유사 를 중심으로 고대한국사회에서의 이주 민·귀화인 사례를 수집하여 통계하고, 반복적 비교분석법으로 이주 유형을 분석해 보았다. 최종적으로 택한 57사례를 분석한 결과, 첫째, 고대사회에서 이미 ‘난민 이주 유형’, ‘종교 전파 이주 유형’, ‘거주 이주 유형’, ‘결혼 이주 유형’ 및 ‘기타 이주 유형’ 등의 이주민 집단이 있었으며, 오늘날의 한국에서 체류하고 있는 이주민 집단과 매우 유사하다. 둘째, 이주민과 타문화의 유입은 고대 한국 사회의 발전, 기술의 진보, 문화의 번영, 국가의 안전 등 여러 측면에서 긍정적인 영향을 끼쳤다. 한국은 다문화 국가로서 다문화 시대, 세계화 시대에서 한 발 더 발전하려면 체계적이고 지속적인 다문화 인식 개선을 위한 다문화 연구 및 다문화 교육은 불가피한 것이다. 이 연구가 한국 다문화 현상 연구 및 다문화 교육에 활용되는 기초자료가 될 수 있기를 기대한 다. 더 나아가 자국민의 고정 관념을 타파하고, 다문화 인식을 개선하여 한국민의 다문화 수용성을 증진시킬 수 있기를 기대한다. In South Korea, the foreign population will soon reach 3 million. Most experts and scholars share the view that South Korea is gradually entering the cultural society. However, Korean citizens multi-cultural tolerance is still very low. Rejection of other cultures, prejudice against foreigners and fear of multiculturalism resulted in a negative perception of multiculturalism. To improve the acceptability of multiculturalism, we should break with stereotypes and improve the negative perception of multiculturalism first. Most of the ancient countries had frequent ethnic fusion due to wars, mass migration, trade and cultural exchanges. This is a universal feature that exists all over the world.This study reviews that ancient Korean society at the perspective of today s multicultural perspective. After a statistical analysis of the immigrants and other cultural examples in the Samguksagi and Samgukyusa by the constant comparison method from March to December 2018, it is found that, firstly, ancient society has already seen the emergence of “refugee migration type”, “culture diffusion migration type”, “residence migration type”, “marriage migration type” “other migration type” and so on. Secondly, the influx of immigrants and other cultures has played a positive role in the development of ancient Korean society, technological progress, cultural prosperity, national security and other aspects. As a multicultural country, if South Korea wants to further develop in the multicultural era and the globalized era, it will inevitably carry out systematic and sustained multicultural research and multicultural education on the improvement of multi-cultural understanding. The results of this study are expected to be used as basic data for multicultural social phenomena and multicultural education in Korea to change stereotypes of their own citizens, thus, improve multicultural awareness and raise the level of multicultural acceptability in the future.

Microstructures and Properties of Molybdenum Wire Doped with Minim La2O3

Li DaCheng,Bu Chunyang,Zhu Yong-An,Wang Jin 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1

The microstructures and properties of pure molybdenum wire and Mo-La2O3 alloy wire annealed at different temperatures are investigated systematically in this paper. It is shown that the recrystallization temperature, toughness and strength at room temperature of this wire was increased greatly by addition of La2O3. The room temperature embrittlement of this wire annealed at high temperature is improved remarkably.

Urinary Hypoxia-Inducible Factor-1alpha Levels Are Associated with Histologic Chronicity Changes and Renal Function in Patients with Lupus Nephritis

Chunyang Ma,Zhuori Li,Jiali Wei,Feng Zhan,Ru Wang,Keying Fu,Xiaoping Wan 연세대학교의과대학 2012 Yonsei medical journal Vol.53 No.3

Purpose: Tubulointerstitial hypoxia in the kidney is considered a hallmark of injury and a mediator of the progression of tubulointerstitial fibrosis. Hypoxia-inducible factor-1alpha (HIF-1alpha), a master transcription factor in cellular adaptation to hypoxia,regulates a wide variety of genes, some of which are closely associated with tissue fibrosis. The present study set out to characterize urinary HIF-1alpha expressions in patients with lupus nephritis (LN) and to explore whether urinary HIF-1alpha expressions are associated with histologic chronicity changes and renal function. Materials and Methods: Urinary HIF-1alpha levels were measured by enzyme-linked immunosorbent assays in 42 patients with LN and in 30 healthy controls. Activity and chronicity indexes as well as tubular HIF-1alpha expressions were analyzed for each specimen. Results: Urinary HIF-1alpha levels were higher in LN patients than in healthy controls (3.977±1.696 vs. 2.153±0.554 ng/mL, p<0.001) and were associated with histologic chronicity indexes (r=0.463, p<0.01) and eGFR (r=-0.324, p<0.05). However, urinary HIF-1alpha levels showed no correlation with histologic activity indexes, anti-dsDNA, ANA, complement 3 and 4 levels, proteinuria, systemic lupus erythematosis disease activity index, and WHO pathological classification (p>0.05). Conclusion: Urinary HIF-1alpha levels were elevated in LN patients and were associated with histologic chronicity changes and renal function, indicating that HIF-1alpha might contribute to histologic chronicity in LN.

A Medium-Voltage Matrix Converter Topology for Wind Power Conversion with Medium Frequency Transformers

Chunyang Gu,Harish S. Krishnamoorthy,Prasad N. Enjeti,Zedong Zheng,Yongdong Li 전력전자학회 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.6

A new type of topology with medium-frequency-transformer (MFT) isolation for medium voltage wind power generation systems is proposed in this paper. This type of converter is a high density power conversion system, with high performance features suitable for next generation wind power systems in either on-shore or off-shore applications. The proposed topology employs single-phase cascaded multi-level AC-AC converters on the grid side and three phase matrix converters on the generator side, which are interfaced by medium frequency transformers. This avoids DC-Link electrolytic capacitors and/or resonant L-C components in the power flow path thereby improving the power density and system reliability. Several configurations are given to fit different applications. The modulation and control strategy has been detailed. As two important part of the whole system, a novel single phase AC-AC converter topology with its reliable six-step switching technique and a novel symmetrical 11-segment modulation strategy for two stage matrix converter (TSMC) is proposed at the special situation of medium frequency chopping. The validity of the proposed concept has been verified by simulation results and experiment waveforms from a scaled down laboratory prototype.

Effect of bond slip on the performance of FRP reinforced concrete columns under eccentric loading

Chunyang Zhu,Li Sun,Ke Wang,Yue Yuan,Minghai Wei 사단법인 한국계산역학회 2019 Computers and Concrete, An International Journal Vol.24 No.1

Concrete reinforced with fiber reinforced polymer (FRP) bars (FRP-RC) has attracted a significant amount of research attention in the last three decades. Alimited number of studies, however, have investigated the effect of bond slip on the performance of FRP-RC columns under eccentric loading. Based on previous experimental study, a finite-element model of eccentrically loaded FRP-RC columns was established in this study. The bondslip behavior was modeled by inserting spring elements between FRP bars and concrete. The improved Bertero-Popov-Eligehausen (BPE) bond slip model with the results of existing FRP-RC pullout tests was introduced. The effect of bond slip on the entire compression-bending process of FRP-RC columns was investigated parametrically. The results show that the initial stiffness of bond slip is the most sensitive parameter affecting the compression-bending performance of columns. The peak bond stress and the corresponding peak slip produce a small effect on the maximum loading capacity of columns. The bondslip softening has little effect on the compression-bending performance of columns. The sectional analysis revealed that, as the load eccentricity and the FRP bar diameter increase, the reducing effect of bond slip on the flexural capacity becomes more obvious. With regard to bond slip, the axial-force-bendingmoment (P-M) interaction diagrams of columns with different FRP bar diameters show consistent trends. It can be concluded from this study that for columns reinforced with large diameter FRP bars, the flexural capacity of columns at low axial load levels will be seriously overestimated if the bond slip is not considered.

Mechanical properties of reinforced-concrete rocking columns based on damage resistance

Chunyang Zhu,Yanqing Cui,Li Sun,Shiwei Du,Xinhui Wang,Haochuan Yu 국제구조공학회 2021 Structural Engineering and Mechanics, An Int'l Jou Vol.80 No.6

The objective of seismic resilience is to maintain or rapidly restore the function of a building after an earthquake. An efficient tilt mechanism at the member level is crucial for the restoration of the main structure function; however, the damage resistance of the members should be the main focus. In this study, through a comparison with the classical Flamant theory of local loading in the elastic half-space, an elastomechanical solution for the axial-stress distribution of a reinforced-concrete (RC) rocking column was derived. Furthermore, assuming that the lateral displacement of the rocking column is determined by the contact surface rotation angle of the column end and bending and shear deformation of the column body, the load–lateral displacement mechanical model of the RC rocking column was established and validated through a comparison with finiteelement simulation results. The axial-compression ratio and column-end strength were analyzed, and the results indicated that on the premise of column damage resistance, simply increasing the axial-compression ratio increases the lateral loading capacity of the column but is ineffective for improving the lateral-displacement capacity. The lateral loading and displacement of the column are significantly improved as the strength of the column end material increases. Therefore, it is feasible to improve the working performance of RC rocking columns via local reinforcement of the column end.

Black and Green Tea Supplements Ameliorate Male Infertility in a Murine Model of Obesity

Chunyang Han,Cuiyan Liu,Jiangsu Geng,Yun Tang,Yunsheng Li,Yijun Wang,Zhongwen Xie 한국식품영양과학회 2020 Journal of medicinal food Vol.23 No.12

Obesity, a chronic metabolic disorder, can affect male reproductive function. As a functional beverage, tea has many biological activities and potential in the treatment of obesity. However, its effects on male reproductive damage induced by obesity are not yet clear. In this study, a murine model of obesity was established by feeding with high-fat diet (HF). A total of 24 male mice were divided into four groups: normal diet (control), HF, HF supplemented with 5% green tea powder (HF+G), and HF supplemented with 5% black tea powder (HF+B). The results showed that the HF + B significantly reduced the mouse body weight gain and testicular coefficient and lowered the serum insulin and leptin levels compared with the HF group. The sperm malformation rate of mice in the HF group had a significant increase when compared with the control group, the HF + B group had a significant decrease compared with the HF group, and no difference from the control group. The HF + G and HF + B significantly increased testosterone levels in serum compared with the HF group. The testosterone production-related gene cytochrome P450 family 11 subfamily a member (CYP11A1) and cytochrome p450 family 17 subfamily a member 1 (CYP17A1) expressions in testis were significantly increased in the HF + G group compared with HF group. In addition, the HF + G and HF + B abolished the effects of HF on superoxide dismutase (SOD), malondialdehyde, and glutathione levels in testis and antioxidant-related gene expressions of XRCC1 and SOD1. Overall, our findings have provided evidence that black and green tea has a positive effect on reducing reproductive damage in a male murine model of obesity, and that black tea is more effective than green tea.