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Search Results: 1 - 10 of 15771 matches for " Yajuan Xiang "
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Elevated Plasma Levels but Decreased Platelet-Associated Expression of LIGHT in Patients with Acute Atherothrombotic Stroke  [PDF]
Guangzhi Liu, Yang He, Tingting Yang, Hong Jiang, Yajuan Xiang, Qi Zhang, Xiangjun He, Peter Hjelmstrom, Xuguang Gao
World Journal of Neuroscience (WJNS) , 2014, DOI: 10.4236/wjns.2014.44042
Abstract: Background: As a member of the tumor necrosis factor superfamily (TNFSF), LIGHT (TNFSF14) is expressed by a variety of immune cells and exists in membrane-bound and soluble forms. Recently, LIGHT was found to be associated with platelets and released upon activation. Activation of endothelia cells by recombinant LIGHT protein results in pro-inflammatory and pro-thrombotic changes. Several studies have reported increased plasma levels of LIGHT in patients with stroke and cardiovascular diseases. However, the form-associated roles of LIGHT in ischemic atherosclerotic stroke remain unclear. Mater?als and Methods: In this study, the platelet LIGHT expression and soluble LIGHT protein were analyzed by flow cytometry and enzyme-linked immunosorbent assay (ELISA) in peripheral blood of patients with acute ischemic atherosclerotic stroke, asymptomatic carotid stenosis (ACS) and normal controls. RESULTS: During the initial 24 h after onset, the stroke patients had decreased LIGHT expression on their platelets (5.9% ± 4.9%) and increased plasma LIGHT levels (36.1 ± 21.0 pg/ml) as compared with normal controls (9.5% ± 3.0%, p < 0.05; 20.4 ± 13.4 pg/ml, p < 0.05). Moreover, the platelet LIGHT expression correlated with total plaque area in the stroke patients (r = 0.4572, p = 0.0247). Conclus?ons: The dysregulated LIGHT expression reflects a persistent chronic inflammatory
Psychosocial Factors for Women Requesting Cesarean Section  [PDF]
Yajuan Zhao, Shuangyun Chen
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.49071
Abstract: Background: Rates of caesarean section are progressively increasing in many parts of the world. As a result of psychosocial factors, there has been an increasing tendency for pregnant women without justifiable medical indications for caesarean section to ask for this procedure in China. The psychosocial factors for requesting cesarean section were analyzed in our study. Methods: A self-made questionnaire and the State-Trait Anxiety Inventory (STAI) and Self-rating Depression Scale (SDS) were administered to evaluate lying-in women’s psychosocial state. Results: The proportion of lying-on women’s age and education degree was different significantly between the two groups (p < 0.01). In the study groups, the proportion of lying-on women who were in lower economic degree and in her first para was markerly higher than control (88.62% vs. 63.24%; 13.32vs. 3.42%, p < 0.01). In the study groups, the proportion of women who felt fearful, anxious, depressed and lacking confidence was higher than control. The ratio of women with university education in the CS group was higher than vaginal delivery group. The proportion of lying-on women without correct delivery knowledge was higher than control, but the difference was not significant (p > 0.05). By logistic regression, we found that for primipara, higher education degree, anxiety and lacking confidence were the dangerous factors for cesarean, while lower economic degree was a defendant factor. Conclusion: There were five main psychosocial factors such as education degree and economic state, parity, anxiety and confidence of lying-on women affecting the choice of the delivery way. The nulliparous women who feel anxious without confidence in nice economic state, with better education have higher risk to choose cesarean.
Identification of Atrial Fibrillation Using Complex Network Similarity  [PDF]
Yajuan Zhang, Yuanyuan Wang
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B005
Abstract:

We investigate the use of complex network similarity for the identification of atrial fibrillation. The similarity of the network is estimated via the joint recurrence plot and Hamming distance. Firstly, we transform multi-electrodes epicardium signals recorded from dogs into the recurrence complex network. Then, we extract features representing its similarity. Finally, epicardium signals are classified utilizing the classification and regression tree with extracted features. The method is validated using 1000 samples including 500 atrial fibrillation cases and 500 normal sinus ones. The sensitivity, specificity and accuracy of the identification are 98.2%, 98.8% and 98.5% respectively. This experiment indicates that our approach may lay a foundation for the prediction of the onset of atrial fibrillation.

Research on Reflection-Action Philosophy-Based Development of Minority Children in Early Reading Ability —Practical Research Based on a Nu Ethnic Population Village  [PDF]
Yajuan Sun, Shanze Li
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.212002
Abstract: Based on the individual case of a Nu Ethnicity Village in Yunnan Province of China, this paper used the philosophy and methods of Reflection-Action to unfold a practical research meant to promote the development of early reading ability of Nu Ethnicity’s children. This paper consists of three major sections: the first section is about the researchers gaining knowledge about the level of Nu Ethnicity’s children’s early reading ability through questionnaire survey; in the second section, using the philosophy of Reflection-Action, the researchers unfolded a two-year-long practice of promoting the early reading ability of the Nu Ethnicity’s children in Laomudeng Village; finally, based on the practical research, this paper concluded some experience that is worth spreading and taking reference from.
On the Cultures in Foreign Language Teaching and Learning
Yajuan YIN
Canadian Social Science , 2009,
Abstract: As we know that a particular language is associated with particular culture, the language provides the key to the understanding of the associated culture. The language itself cannot be really learned or fully understood without enough knowledge of the culture in which it is deeply embedded. So language and culture must be studied together and great effort must be made at the study of the culture in which the target language operates. Key words: Culture; Foreign language; Teaching; Learning
Effects of endosulfan on the mortality,growth and enterogastric ultrastructure of earthworms(Eisenia fetida)
硫丹对蚯蚓存活、生长和肠胃线粒体超微结构的影响

ZHENG Lish,SHI Yajuan,MENG Fanqiao,ZHANG Xiang,
郑丽莎
,史雅娟,孟凡乔,张翔

环境科学学报 , 2009,
Abstract: To study the effects of endosulfan on mortality,growth and the ultrastructure changes of enterogastric mitochondria of earthworms(Eisenia fetida),earthworms were raised in artificial soil and examined after 14 days of acute exposure.The results showed that endosulfan had a lethal effect on earthworms,with median lethal concentrations(LC50)at 6.52 mg·kg-1 for 14 days.Endosulfan inhibited the growth of earthworms during the test,and the inhibition rates increased with exposure time and endosulfan dosage.The ultrastructures of the enterogastric mitochondria were destroyed irreversibly after exposure to endosulfan,even at non-lethal doses.Changes in the ultrastructure of the enterogastric mitochondria were more sensitive indicators than LC50 values in assessing endosulfan injury to earthworms.
Strategic Segment of Dynamic Value Chain
Jialing Li,Yajuan Feng
International Journal of Business and Management , 2009,
Abstract: In this article the new structure is provided that is the core of intelligent ability as dynamic value chain base on value chain of Michael E. Potter, the core of intelligent ability includes management of manpower resources?knowledge and capability of science & technology, outer layer of the dynamic value chain is process that substance change of product production. It is suggested that once the core of intelligent ability was controlled by an enterprise that it will win the potentiality for entering all kind of markets. Because the value chain’s boundary is indistinct, an enterprise can concentrate and extend tissue range as the demand of market. The meaning of strategic management on the core of intelligent ability controlled by an enterprise can be shown with the innovative dynamic value chain.
Enhanced HBVMs for the numerical solution of Hamiltonian problems with multiple invariants
Luigi Brugnano,Yajuan Sun
Mathematics , 2013, DOI: 10.1063/1.4825603
Abstract: Recently, the class of energy-conserving Runge-Kutta methods named Hamiltonian Boundary Value Methods (HBVMs), has been proposed for the efficient solution of Hamiltonian problems, as well as for other types of conservative problems. In this paper, we report further advances concerning such methods, resulting in their enhanced version (Enhanced HBVMs, or EHBVMs). The basic theoretical results are sketched, along with a few numerical tests on a Hamiltonian problem, taken from the literature, possessing multiple invariants.
Multiple invariants conserving Runge-Kutta type methods for Hamiltonian problems
Luigi Brugnano,Yajuan Sun
Mathematics , 2013, DOI: 10.1007/s11075-013-9769-9
Abstract: In a recent series of papers, the class of energy-conserving Runge-Kutta methods named Hamiltonian BVMs (HBVMs) has been defined and studied. Such methods have been further generalized for the efficient solution of general conservative problems, thus providing the class of Line Integral Methods (LIMs). In this paper we derive a further extension, which we name Enhanced Line Integral Methods (ELIMs), more tailored for Hamiltonian problems, allowing for the conservation of multiple invariants of the continuous dynamical system. The analysis of the methods is fully carried out and some numerical tests are reported, in order to confirm the theoretical achievements.
Percutaneous Patent Foramen Ovale Closure versus Medical Therapy in Cryptogenic Stroke: An Update Meta-Analysis of Randomized Controlled Trials  [PDF]
Xiaohui Luo, Dandan Yan, Hui Shao, Yajuan Du
World Journal of Cardiovascular Diseases (WJCD) , 2018, DOI: 10.4236/wjcd.2018.88040
Abstract: Objectives: Concerns regarding the real efficacy of transcatheter patent foramen ovale (PFO) closure versus medical therapy in patients with cryptogenic stroke remained unresolved. We performed a meta-analysis using the randomized controlled trials on the efficacy and safety of transcatheter PFO closure in patients with cryptogenic stroke. Methods: Web of Science, EMBASE, PubMed, and the Cochrane Library were searched for relevant randomized controlled trials (RCTs). The primary outcome was recurrent stroke and transient-ischemic attack (TIA). Original data, hazard ratio (HR) with 95% confidence interval (95% CI) were abstracted to calculate a pooled effect size. Results: Our meta-analysis showed benefit with device closure when compared with medical therapy with an HR of 0.54 (95% CI: 0.39 - 0.74, P = 0.108) in the intention-to-treat cohort, 0.44 (95% CI: 0.24 - 0.82, P = 0.103) in the per-protocol populations, and 0.43 (95% CI: 0.31 - 0.60, P = 0.019) in the as-treated populations. There was a significantly higher incidence of new-onset atrial fibrillation in PFO closure patients (OR = 4.53, 95% CI: 2.58 -
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