• Title/Summary/Keyword: Xi Ming

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Compaction techniques and construction parameters of loess as filling material

  • Hu, Chang-Ming;Wang, Xue-Yan;Mei, Yuan;Yuan, Yi-Li;Zhang, Shan-Shan
    • Geomechanics and Engineering
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    • v.15 no.6
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    • pp.1143-1151
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    • 2018
  • Loess often causes problems when used as a filling material in the construction of foundations. Therefore, the compaction technique, shear behavior, and bearing capacity of a filled foundation should be carefully considered. A series of tests was performed in this study to obtain effective compaction techniques and construction parameters. The results indicated that loess is strongly sensitive to water. Thus, the soil moisture content should be kept within 12%-14% when it is used as a filling material. The vibrating-dynamic combination compaction technique is effective and has fewer limitations than other methods. In addition, the shear strength of the compacted loess was found to increase linearly with the degree of compaction, and the soil's compressibility decreased rapidly with an increase in the degree of compaction when the degree of compaction was less than 95%. Finally, the characteristic value of the bearing capacity increased with an increase in the degree of compaction in a ladder-type way when the degree of compaction was within 92%-95%. Based on the test data, this paper could be used as a reference in the selection of construction designs in similar engineering projects.

A Novel Single Phase Synchronous Reference Frame Phase-Locked Loop with a Constant Zero Orthogonal Component

  • Li, Ming;Wang, Yue;Fang, Xiong;Gao, Yuan;Wang, Zhaoan
    • Journal of Power Electronics
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    • v.14 no.6
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    • pp.1334-1344
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    • 2014
  • A novel single phase Phase-Locked Loop (PLL) is proposed in this paper to accurately and rapidly estimate the instantaneous phase angle of a grid. A conjugate rotating vector pair is proposed and defined to synthesize the single phase signal in the stationary reference frame. With this concept, the proposed PLL innovatively sets one phase input of the PARK transformation to a constant zero. By means of a proper cancellation, a zero steady state phase angle estimation error can be achieved, even under magnitude and frequency variations. The proposed PLL structure is presented together with guidelines for parameters adjustment. The performance of the proposed PLL is verified by comprehensive experiments. Satisfactory phase angle estimation can be achieved within one input signal cycle, and the estimation error can be totally eliminated in four input cycles for the most severe conditions.

Hypothesis on the Role of Cytoplasmic "Short Base Sequences" in Carcinogenesis

  • Zhang, Jing-Yao;Xie, Lin;Tai, Ming-Hui;Wu, Qi-Fei;Liu, Chang
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.2
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    • pp.1155-1157
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    • 2013
  • Cancer is a highly complex medical problem with ramifications for public health throughout the world. Most studies have mainly focused on change in the nuclei as being aetiologically responsible. Few have examined the relationship between the cytoplasm and cancer, despite the fact that research has indicated that the cytoplasmic environment is an important factor for cellular differentiation and that the genetic information provided by the nucleus is entirely dependent on this environment for its expression. Gene mutations may be the result, rather than the cause of carcinogenesis. We submit a new concept - "short base sequences" (50-500 bps, including DNA or RNA sequences) in the cytoplasm which could play an important role in carcinogenesis. This is a new theory to explain the origin of the cancer.

Experimental study on deformation and strength property of compacted loess

  • Mei, Yuan;Hu, Chang-Ming;Yuan, Yi-Li;Wang, Xue-Yan;Zhao, Nan
    • Geomechanics and Engineering
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    • v.11 no.1
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    • pp.161-175
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    • 2016
  • A series of experimental studies are conducted on the deformation and shear strength property of compacted loess. The results reveal that the relationships of both the initial moisture content (w) and the initial degree of compaction (K) of compacted loess with cohesion (w) and the angle of internal friction (${\varphi}$) are linear. The relationship between the secant modulus ($E_{soi}$) and K is also linear. The relationship between $E_{soi}$ and w can be fitted well by a second-order polynomial. Further, when the influences of w and K are ignored, the relationship between the confined compression strain (${\varepsilon}$) and vertical pressure (p) can be expressed by a formula. A correction formula for the deformation of compacted loess caused by a change in w and K is derived on the basis of the study results.

Long-term Prognosis in Hepatocellular Carcinoma Patients after Hepatectomy

  • Zhou, Lei;Liu, Chang;Meng, Fan-Di;Qu, Kai;Tian, Feng;Tai, Ming-Hui;Wei, Ji-Chao;Wang, Rui-Tao
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.2
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    • pp.483-486
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    • 2012
  • Background: The hepatocellular carcinoma is very common in China. Our aim in this report was to investigate clinical and pathological factors based on the current decade data that could influence prognosis of HCC patients after hepatectomy. Methods: Between 2002 and 2009, all patients undergoing hepatectomy for HCC were followed up and reviewed retrospectively. Prognostic factors were studied by univariate and multivariate analysis, with Kaplan-Meier and Cox multivariate survival analyses. Results: Complete clinicopathologic and follow-up data were available for 114 patients. The estimated cumulative survival rates at 1, 3, and 5 yr were 84.6%, 60.2% and 51.8%, respectively. On univariate analysis, key prognostic factors were AFP level, GGT level, tumor size, number of tumors, portal vein invasion, liver cirrhosis status and TNM stage. In the multivariate analysis, tumor size, GGT level, liver cirrhosis status and portal vein invasion were significantly associated with patients' prognosis. Conclusion: Through follow-up of a relatively large cohort of Chinese patients, tumor size, GGT level, liver cirrhosis status, portal vein invasion were revealed as important factors for long-term survival after hepatectomy. Early diagnosis for tumor and the improvement of liver function before surgery are important ways to improve the prognosis.

A Study on the Post Occupancy Evaluation of Xi'an Castle Park in China (중국 서안시 명성곽공원의 이용실태에 관한 연구)

  • Kim, Dong-Chan;Ma, Yuan
    • Journal of the Korean Institute of Landscape Architecture
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    • v.39 no.1
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    • pp.75-83
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    • 2011
  • This research aims to grasp the use status and satisfaction level based on citizen consciousness to improve future design. This study employs a combination literature review and field survey. In the literature review, the related materials were collected to obtain the most useful information for references, and the POE study of the Xi'an Ming City Wall Park was conducted. The survey instrument is a questionnaire that includes questions regarding Xi'an Ming City Wall Park. Data were analyzed using the Statistical Package for the Social Sciences(SPSS17.0 for Windows). Through the POE analysis of the usage status and variables which significantly affect the users' degree of satisfaction with the spaces and facilities were investigated and the following problems have been found.Xi'an Ming City Wall Park requires extensive modification to meet the demands of citizens. Several shortcomings are hampering the development of the park. The rest space and the nightscape seem to be the two most problematic aspects in the park. The nightscape design should be particularly emphasized in the overall park design in the future. The results also show that the major population visiting the park is the elderly, so the characteristics of this age should be taken into consideration when improvement decisions are made, and the facilities and activities suitable to elderly people should also be increased.

Distinctions Between Clinicopathological Factors and Prognosis of Alpha-fetoprotein Negative and Positive Hepatocelluar Carcinoma Patients

  • Xu, Jia;Liu, Chang;Zhou, Lei;Tian, Feng;Tai, Ming-Hui;Wei, Ji-Chao;Qu, Kai;Meng, Fan-Di;Zhang, Ling-Qiang;Wang, Zhi-Xin;Zhang, Jing-Yao;Chang, Hu-Lin;Liu, Si-Nan;Xu, Xin-Shen;Song, Yan-Zhou;Liu, Jun;Zhang, Peng
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.2
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    • pp.559-562
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    • 2012
  • Serum alpha-fetoprotein (AFP) is a significant marker for clinical diagnosis and prognosis evaluation in hepatocellular carcinoma (HCC) patients. However, some proportion of liver cancer patients are AFP-negative (AFP ${\leq}$20ng/ml). In order to study the differences between clinicopathological factors and prognosis of alpha-fetoprotein negative and positive patients, a total of 114 cases (41 AFP-negative and 73 AFP-positive) were selected for our research. By systematically statistical analysis, the results demonstrated that compared with AFP-negative patients, AFP-positive examples were more likely to feature cirrhosis nodules, non-complete neoplasm capsules, and a poor Edmondson-steiner grade. Furthermore, AFP-negative patients demonstrated a favorable long-term prognosis. By univariate analysis and multivariate analysis with Cox's proportional hazards model, multiple tumors were found to be independent risk factors for worse survival of AFP negative patients; however, less tumor-free margins, multiple tumors and Edmondson-steiner grades III/IV, proved to be independent risk factors leading to a poor prognosis of AFP positive cases. Finally, we can infer that high levels of AFP signify a highly malignant tumor and unfavorable prognosis.

A Study of Li Fu's Appreciation of Zhu Xi and Lu Jiuyuan's Philosophy - Centering around Zhuziwannianquanlun - (이불(李?)의 주육관(朱陸觀) 연구 - 『주자만년전론』을 중심으로 -)

  • Lim, hong-tae
    • The Journal of Korean Philosophical History
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    • no.37
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    • pp.159-195
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    • 2013
  • A dispute between Zhu Xi(朱熹) and Lu Jiuyuan(陸九淵) is important on Neo-confucianism's development. The dispute causing from difference between Zhu Xi and Lu Jiuyuan's Philosophy had effected Zhu Xi and Lu Jiuyuan's each school's philosophical dispute. From Song dynasty to Ming Dynasty's most philosophers continuous disputed about Same & Difference on Zhu Xi and Lu Jiuyuan's Philosophy, but did not appreciate it because of school's prejudice. On Qing dynasty, there appeared philosophers being free or less from school's prejudice. they looked at Same & Difference on Zhu Xi and Lu Jiuyuan's Philosophy objectively. One of them was Li Fu(李?) philosopher of Lu Jiuyuan & Wang Yangming's school. He wrote Zhuziwannianquanlun("朱子晩年全論") objective investigation of Same & Difference on Zhu Xi and Lu Jiuyuan's Philosophy and reaction of Zhu Xi's school criticizing Wang Yangming's Zhuxiwannianzhunglun. Li Fu was Philosopher Lu Jiuyuan & Wang Yangming's school, but objectively compared between Zhu Xi and Lu Jiuyuan's philosophy, analysed same of Zhu Xi and Lu Jiuyuan's philosophy and attempted philosophical agreement. Li Fu's this approaching is new interpretation and isn't uncritical admission from prejudice of Lu Jiuyuan & Wang Yangming's school.

Potential Therapeutic Targets for the Primary Gallbladder Carcinoma: Estrogen Receptors

  • Zhang, Ling-Qiang;Zhang, Xiu-De;Xu, Jia;Wan, Yong;Qu, Kai;Zhang, Jing-Yao;Wang, Zhi-Xin;Wei, Ji-Chao;Meng, Fan-Di;Tai, Ming-Hui;Zhou, Lei;Liu, Chang
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.4
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    • pp.2185-2190
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    • 2013
  • Gallbladder carcinoma, the most frequent malignant neoplasm of the biliary tract system, has always been considered to feature late clinical presentation and diagnosis, limited treatment options and an extremely poor prognosis. In recent years, while the incidence of gallbladder cancer has appeared to be on the increase, the available treatment methods have not greatly improved survival of the affected patients. Thus, exploring new therapeutic targets for this devastating disease is an urgent matter at present. Epidemical studies have demonstrated that the incidence of gallbladder carcinoma exhibits a distinct gender bias, affecting females two to three times more than males, pointing to crucial roles of estrogen. It is well known that estrogen acts on target tissues by binding to estrogen receptors (ERs), which are mainly divided into three subtypes, $ER{\alpha}$, $ER{\beta}$ and $ER{\gamma}$. $ER{\alpha}$ and $ER{\beta}$ appear to have overlapping but also unique even opposite biological effects. As important pathogenic mediators, ERs have been considered to relate to several kinds of tumors. In gallbladder carcinoma tissue, ERs have been shown to be positively expressed, and ERs expression levels are associated with differentiation and prognosis of this cancer. Nevertheless, the exact mechanisms of estrogen inducing growth of gallbladder carcinoma remain poorly understood. On the base of the current investigations, we deduce that estrogen participates in promotion of gallbladder carcinoma by influencing the formation of gallstones, stimulating angiogenesis, and promoting abnormal proliferation. Since ERs mediate the carcinogenic actions of estrogen in gallbladder, and therapy targeting ERs may provide new directions for gallbladder carcinoma. Therefore, it should be stressed that ERs are potential therapeutic targets for gallbladder carcinoma.

Gallbladder Cancer: a Subtype of Biliary Tract Cancer Which is a Current Challenge in China

  • Qu, Kai;Liu, Si-Nan;Chang, Hu-Lin;Liu, Chang;Xu, Xin-Sen;Wang, Rui-Tao;Zhou, Lei;Tian, Feng;Wei, Ji-Chao;Tai, Ming-Hui;Meng, Fan-Di
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.4
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    • pp.1317-1320
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    • 2012
  • Biliary tract cancers, broadly described as malignancies that arise from the biliary tract epithelia, are usually divided into two major clinical phenotypes: cholangiocarcinoma and gallbladder cancer, differing in etiopathogenesis, risk factors, and perhaps molecular and genetic signatures. Atypical symptoms and lack of tumor biomarkers make it difficult to diagnose in early stages. At the time of presentation, few patients are candidates for potentially curative surgical resection. We here assessed and compared features of a total of 150 cases divided into extra- and intrahepatic cholangiocarcinomas and gallbladder cancers (GBC). Althought there were no significant differences in serum tumour marker levels, GBC patients had the poorest prognosis. Furthermore, gallbladder cancer respond poorly to chemotherapy or radiation therapy and approximately half of untreated patients died within 10 months. Therefore, treatment for patients with gallbladder cancer is still in challenge. Outcomes and survival of these patients had improved little over the past three decades - a period in which new successful treatments have greatly contributed to the prolonged patient survival for many other cancers.