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Yu-Li Chen,Kung-Liahng Wang,Min-Yu Chen,Mu-Hsien Yu,Chen-Hsuan Wu,Yu-Min Ke,Yi-Jen Chen,Yin-Yi Chang,Keng-Fu Hsu,Ming-Shyen Yen 대한부인종양학회 2013 Journal of Gynecologic Oncology Vol.24 No.1
Objective: To evaluate the clinical outcome and parameters related to coexisting endometrial carcinoma in women with tissuediagnosed endometrial hyperplasia. Methods: Between January 1991 and December 2009, three hundred and eighty-six patients with the presumptive diagnosis of endometrial hyperplasia were retrieved. Among these, one hundred and twenty-five patients were identified as having coexisting endometrial carcinoma in hysterectomy specimens. The three hundred and eighty-six patients were divided into two groups: the hyperplasia-benign group (261 cases) and the hyperplasia-malignant group (125 cases). Several clinical parameters including age, menopausal status, history of abnormal uterine bleeding, obstetrical history, medical history of diabetes and hypertension, BMI, and preoperative pathologic results were investigated. Results: Age ≥53 (odds ratio [OR], 2.40; 95% confidence interval [CI], 1.26 to 4.57), menopausal status (OR, 2.07; 95% CI, 1.14to 3.76), diabetes history (OR, 7.33; 95% CI, 2.79 to 19.26), abnormal uterine bleeding (OR, 3.99; 95% CI, 1.22 to 13.02), atypical endometrial hyperplasia (OR, 7.38; 95% CI, 4.03 to 13.49), and body mass index ≥27 (OR, 3.24; 95% CI, 1.76 to 5.97) were independent risk factors for prediction of endometrial hyperplasia coexisting with endometrial carcinoma. The diagnostic efficacy of atypical endometrial hyperplasia to predict the endometrial hyperplasia coexisting with endometrial carcinoma was better than or similar to those of other independent factors and combinations of these factors. Conclusion: Coexisting malignancy should be considered when examining endometrial hyperplasia patients with the related risk factors, especially atypical endometrial hyperplasia.
Two New Species of Placolecis (Lichenized Ascomycota) from China
( An Cheng Yin ),( Xin Yu Wang ),( Dong Liu ),( Yan Yun Zhang ),( Mei Xia Yang ),( Li Juan Li ),( Li Song Wang ) 한국균학회 2019 Mycobiology Vol.47 No.4
Two new species of the lichen genus Placolecis are discovered in China, namely P. kunmingensis An. C. Yin & Li S. Wang and P. sublaevis An. C. Yin & Li S. Wang. The new combination P. loekoesiana (S.Y. Kondr., Farkas, J.J. Woo & Hur) An. C. Yin is proposed. Placolecis kunmingensis is characterized by having simple, spherical or ellipsoid, hyaline spores, and pear-shaped pycnidia; while P. sublaevis can be distinguished by its thallus forming larger aggregations with slightly flattened lobes at the thallus margin, and urn-shaped pycnidia. Descriptions, a phylogenetic tree and a key are provided for all the known Placolecis species in China.
Yu Yin,이석기,왕명현 한국생약학회 2011 Natural Product Sciences Vol.17 No.1
An alkaloid, 3-methylcanthin-5, 6-dione, was isolated from the stem of Picrasma quassioides (D. Don) Benn. and characterized by comprehensive analyses of its 1D and 2D NMR spectra. It was also evaluated for its cytotoxic activity in vitro against three human cancer cell lines (MDA-MB-231, HT-29 and NCI-N87), using MTT assays. We found that 3-methylcanthin-5, 6-dione exhibited significant anti-inflammatory activity via inhibiting NO production induced in LPS-stimulated murine macrophage RAW264.7 cells. The antioxidant activity of 3-methylcanthin-5, 6-dione was measured by DPPH free radical scavenging assays, hydroxyl radical scavenging assays and reducing power assays. Our results showed that 3-methylcanthin-5, 6-dione has significant biological activities.
Identifying Creep and Destructuration Related Soil Parameters by Optimization Methods
Yin-Fu Jin,Zhen-Yu Yin,Yvon Riou,Pierre-Yves Hicher 대한토목학회 2017 KSCE JOURNAL OF CIVIL ENGINEERING Vol.21 No.4
The paper aims to construct an efficient optimization method for identifying creep and destructuration related governing parameters of soft structured clay. An elastic viscoplastic model has been developed and adopted. Different optimization processes, by genetic algorithm or particle swarm optimization with uniform or random samplings initialization methods, are carried out to obtain the material parameters from conventional undrained triaxial tests performed on a K0-concolidated natural soft clay. All comparisons demonstrate that the uniqueness of the solution is better guaranteed with the genetic algorithm rather than with the particle swarm optimization method. Furthermore, the efficiency of genetic algorithm has been verified by simulating other tests.
The behavior of exchange market pressure in china : 1980-2005
Yin Yu 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
In this paper, the exchange market pressure(EMP) was defined as the abnormal values of the weighted average of changes in Fisher’s exchange rates, in interest rates and in international reserves, and developed stylized facts concerning the univariate behavior of a variety of macroeconomic variables. We selected nine macroeconomic indicators of China from Q1/1980 TO Q2/2005, compared their behavioral characteristics among the three exchange rate arrangements (ERAs) and between the two events of calm and pressure, and tried to tie these results to China’s actual economic situation. Results shown that the following characteristics emerged in EMP: sharp letting down of CPI%. depreciation of nominal monetary, and growth of credit.
Yin, Yu,Wang, Myeong-Hyeon The Korean Society of Food Science and Nutrition 2011 Preventive Nutrition and Food Science Vol.16 No.1
The potential biological activities of water and ethanol extracts from two varieties of Rubus coreanus Miquel fruits produced in the Gochang-gun (GR) and Hoengseong-gun (HR) regions of Korea were examined. The hydroxyl radical ($\cdot$OH) scavenging activity, reducing power, lipid peroxidation inhibitory activity, and antiproliferative activity on cancer cells by these extracts were examined, and $\alpha$-amylase and $\alpha$-glucosidase inhibition assays were also performed. The EtOH extract from GR showed high hydroxyl radical scavenging activity ($EC_{50}=119.47{\pm}5.13\;{\mu}g/mL$), lipid peroxidation inhibitory activity ($EC_{50}=213.45{\pm}3.14\;{\mu}g/mL$) and a concentration dependence, with OD values ranging from 0.15 to 0.56 (50 to 200 ${\mu}g/mL$), for reducing power. The EtOH extract from GR has the highest antiproliferative activities on MDA-MB-231 and HepG2 cancer cells among four extracts. Meanwhile, all extracts showed certain $\alpha$-amylase and $\alpha$-glucosidase inhibition activities. These results indicate that extracts from two varieties of R. coreanus fruits have significant antioxidant, anti-diabetic and anti-tumorigenic activities, which suggest these extracts could be a potential source for pharmaceutical.
Yu-Shuai Wang,Yin-Ping Jin,Wei Gao,Sheng-Yuan Xiao,Yu-Wei Zhang,Pei-He Zheng,Jia Wang,Jun-Xia Liu,Cheng-He Sun,Ying-Ping Wang 고려인삼학회 2016 Journal of Ginseng Research Vol.40 No.3
Background: Ginsenosides are the major effective ingredients responsible for the pharmacological effects of ginseng. Malonyl ginsenosides are natural ginsenosides that contain a malonyl group attached to a glucose unit of the corresponding neutral ginsenosides. Methods: Medium-pressure liquid chromatography and semipreparative high-performance liquid chromatography were used to isolate purified compounds and their structures determined by extensive one-dimensional- and two-dimensional nuclear magnetic resonance (NMR) experiments. Results: A new saponin, namely malonyl-ginsenoside Re, was isolated from the fresh flower buds of Panax ginseng, along with malonyl-ginsenosides Rb1, Rb2, Rc, Rd. Some assignments for previously published ¹H- and <SUP>13</SUP>C-NMR spectra were found to be inaccurate. Conclusion: This study reports the complete NMR assignment of malonyl-ginsenoside Re, Rb₁, Rb₂, Rc, and Rd for the first time.
A Factor Analysis of Chinese University EFL Learners’ Foreign Language Classroom Anxiety
Yin Xiaoteng, Wang Yu 부산대학교 과학교육연구소 2017 교사교육연구 Vol.56 No.2
ABSTRACT: The subjects of the present study were 344 college students from China. They responded to a 5-point likert scale questionnaire adapted from Horwitz’s Foreign Language Classroom Anxiety Scale (FLCAS). Their responses to the questionnaire were submitted to exploratory factor analysis and confirmatory factor analysis (with the help of SPSS and AMOS statistical package) for identifying anxiety dimensions. The results showed that there existed four dimensions of the FLCAS and the four-factor model adequately fit the data. The fit indices also suggested that the instrument measuring the dimensions of anxiety specific to college students in China was construct-wise valid and reliable for future use and it may also provide some reference for measuring anxiety dimensions in similar cultural context countries like Korea and Japan
Yu Yin,Myeong-Hyeon Wang 한국식품영양과학회 2011 Preventive Nutrition and Food Science Vol.16 No.1
The potential biological activities of water and ethanol extracts from two varieties of Rubus coreanus Miquel fruits produced in the Gochang-gun (GR) and Hoengseong-gun (HR) regions of Korea were examined. The hydroxyl radical ( OH) scavenging activity, reducing power, lipid peroxidation inhibitory activity, and antiproliferative activity on cancer cells by these extracts were examined, and α-amylase and α-glucosidase inhibition assays were also performed. The EtOH extract from GR showed high hydroxyl radical scavenging activity (EC50=119.47±5.13 ㎍/mL), lipid peroxidation inhibitory activity (EC50=213.45±3.14 ㎍/mL) and a concentration dependence, with OD values ranging from 0.15 to 0.56 (50 to 200 ㎍/mL), for reducing power. The EtOH extract from GR has the highest antiproliferative activities on MDA-MB-231 and HepG2 cancer cells among four extracts. Meanwhile, all extracts showed certain α-amylase and α-glucosidase inhibition activities. These results indicate that extracts from two varieties of R. coreanus fruits have significant antioxidant, anti-diabetic and anti-tumorigenic activities, which suggest these extracts could be a potential source for pharmaceutical.