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Search Results: 1 - 10 of 45562 matches for " Wen-Jie Zi "
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Plasma D-Dimer Levels Are Associated with Stroke Subtypes and Infarction Volume in Patients with Acute Ischemic Stroke
Wen-Jie Zi, Jie Shuai
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0086465
Abstract: Background It has been suggested that modestly elevated circulating D-dimer values may be associated with acute ischemic stroke (AIS). Thus, the purpose of this study was to investigate the association between plasma D -dimer level at admission and AIS in Chinese population. Methods In a prospective observational study, plasma D-dimer levels were measured using a particle-enhanced, immunoturbidimetric assay on admission in 240 Chinese patients with AIS. The National Institutes of Health Stroke Scale (NIHSS) score was assessed on admission blinded to D-dimer levels. Results Plasma median D-dimer levels were significantly (P = 0.000) higher in AIS patients as compared to healthy controls (0.88; interquartiler range [IQR], 0.28–2.11 mg/L and 0.31; IQR, 0.17–0.74 mg/L). D-dimer levels increased with increasing severity of stroke as defined by the NIHSS score(r = 0.179, p = 0.005) and infarct volume(r = 0.425, p = 0.000). Those positive trends still existed even after correcting for possible confounding factors (P = 0.012, 0.000; respectively). Based on the Receiver operating characteristic (ROC) curve, the optimal cut-off value of plasma D-dimer levels as an indicator for diagnosis of cardioembolic strokes was projected to be 0.91 mg/L, which yielded a sensitivity of 83.7% and a specificity of 81.5%, the area under the curve was 0.862(95% confidence interval [CI], 0.811–0.912). Conclusion We had shown that plasma D-dimer levels increased with increasing severity of stroke as defined by the NIHSS score and infarct volume. These associations were independent other possible variables. In addition, cardioembolic strokes can be distinguished from other stroke etiologies by measuring plasma D-dimer levels very early (0–48hours from stroke symptom onset).
Cortisol as a Prognostic Marker of Short-Term Outcome in Chinese Patients with Acute Ischemic Stroke
Wen-Jie Zi, Jie Shuai
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0072758
Abstract: Background Early prediction of outcome is important for allocation of therapeutic strategies. Endocrine alterations of the hypothalamus–pituitary–axis are one of the first stress-induced alterations after cerebral ischemia. We therefore evaluated the prognostic value of serum cortisol in Chinese patients with an acute ischemic stroke. Methods In a prospective observational study, serum cortisol was measured using a solid-phase, competitive chemiluminescent enzyme immunoassay on admission in serum of 226 consecutive Chinese patients with an acute ischemic stroke. The prognostic value of serum cortisol to predict the functional outcome, mortality within 90 days, was compared with clinical variables (e.g., advanced age and the National Institutes of Health Stroke Scale [NHISS] score) and with other known predictors. Results Patients with a poor outcome and nonsurvivors had significantly increased serum cortisol levels on admission (P<0.0001, P<0.0001). There was a positive correlation between levels of cortisol and the NIHSS (r = 0.298, P<0.0001), glucose levels (r = 0.324, P<0.0001) and infarct volume (r = 0.328, P<0.0001). Cortisol was an independent prognostic marker of functional outcome and death [odds ratio 3.44 (2.58–6.23) and 4.21 (1.89–9.24), respectively, P<0.0001 for both, adjusted for age, the NIHSS and other predictors] in patients with ischemic stroke. In receiver operating characteristic curve analysis, cortisol could improve the NIHSS score in predicting short-term functional outcome (Area under the curve [AUC] of the combined model, 0.87; 95% CI, 0.82–0.92; P = 0.01) and mortality (AUC of the combined model, 0.90; 95% CI, 0.84–0.95; P = 0.01). Conclusion Cortisol can be seen as an independent short-term prognostic marker of functional outcome and death in Chinese patients with acute ischemic stroke even after correcting confounding factors. Combined model can add significant additional predictive information to the clinical score of the NIHSS.
Of College Students Committing Crimes
Wen-jie SHANG
Cross-Cultural Communication , 2007, DOI: 10.3968/680
Abstract: In the year 2004, college student Xia from certain Beijing Vocational College was sentenced to be put in jail for six months for intimidating and blackmailing the school leaders. Crimes committed by college students became the focus of the society once again. The present essay approaches from the aspects of family, school and society to analyze the causes behind the crimes committed by college students and discusses in particular how to effectively prevent and control such crimes. Key words: college student committing crimes, family education training and instruction system Résumé: En 2004, un étudiant Xia d’une école professionnelle a été condamné à six mois de prison pour avoir menacé et fait chanté un dirigeant de l’école. La culpabilité des étudiants attire de nouveau l’attention de la société. Le présent article essaie d’analyse, sur les plans de la famille, de l’école et de la société, les raisons de la criminalité des étudiants et expose particulièrement comment prévenir et contr ler la culpabilité des étudiants. Mots-clés: culpabilité des étudiants, éducation familiale et système d’orientation 摘要: 2004年,北京某科技職業學院在校學生夏某因涉嫌實施爆相威脅並勒索校領導被判六個月徒刑。大學生犯罪問題再次成為社會關注的焦點。本文擬就從家庭、學校、社會三個方面對大學生犯罪的原因進行分析,並著重論述了如何更有效預防和控制大學生犯罪。 關鍵詞:大學生犯罪;家庭教育培訓和指導體系
Relative Error of the Mechanics of Material Solution on Simply Supported Beam under Uniform Load
Wen-jie Niu
Research Journal of Applied Sciences, Engineering and Technology , 2012,
Abstract: The mechanics of material solution is a coarse analytical solution on the problem of simply supported beam under uniform load. This paper intends to determine the relative error of the mechanics of material solution. Solutions according to plane stress theory of elasticity theory are believed to be the true solution. Results indicate that material mechanics solution σx seems applicable only when the ratio of beam height to beam length is less than 0.1 and the ratio of distance between beam studied cross section and midpoint in x direction to beam length is less than 0.49. When the ratio of beam height to beam length is less than 0.1 and the ratio of distance between beam studied cross section and midpoint in x direction to beam length is less than 0.49, maximum value of relative error for material mechanics solution σx is no more than 12%. Material mechanics solution τxy is always correct for the problem of simply supported beam under uniform load. Material mechanics solution σx is not applicable for the problem of simply supported beam under uniform load.
Effects of triptolide-medicated serum on secretion function of adrenocortical cells isolated from rats
Wen-jie MAO
Zhong Xi Yi Jie He Xue Bao , 2010,
Abstract: Objective: To study the effects of triptolide-medicated serum on secretory function of adrenocortical cells isolated from rats. Methods: Thirty SD rats were randomly divided into control group, prednisone group, and low-, medium- and high-dose triptolide groups. Rats were administered with normal saline, prednisone and low-, medium- and high-dose triptolide respectively by gastrogavage to prepare sera containing drugs. Primary adrenocortical cells were isolated from normal male rats and cultured with sera containing drug for 48 hours. Expression of proliferating cell nuclear antigen (PCNA) was observed by immunohistochemical method and number of PCNA-positive cells was counted. Ultrastructure of adrenocortical cells was observed under a transmission electron microscope. Content of corticosterone in supernatant of adrenocortical cell culture was detected by enzyme-linked immunosorbent assay, and real-time fluorescence quantitative polymerase chain reaction (PCR) was employed to investigate the expression of 3β-hydroxysteroid dehydrogenase (3β-HSD) mRNA.Results: As compared with the control group, content of corticosterone in supernatant of adrenocortical cell culture and expression of 3β-HSD mRNA were significantly increased in the triptolide-treated groups, and the numbers of PCNA-positive cells were increased in the medium- and high-dose triptolide groups, however, they were decreased in the prednisone group.Conclusion: Triptolide-medicated serum can increase the secretion of corticosterone in rat adrenocortical cells in vitro.
Dark Energy, Hyperbolic Cosecant Cardassian and Virial Collapse for Power-style Cardassian
Wen-Jie Tian
Physics , 2009,
Abstract: New work gathers in Chapter 6 and Chapter 7. Tthe Cardassian dynamical equations are introduced generally and logically under GF fluid scenario, together with the flowing process of constructing phase space and differential dynamical systems from Friedmann equation. Hyperbolic cosecant Cardassian term is employed for concrete computing. The analysis proceeds in two cases, namely a unified description of matter and radiation energy density (case 1) and a separate description of matter and radiation terms (case 2).Formalism of case 2 is more exact at the expense of more complicatedness, and due to the mathematical symmetry of matter term and radiation term in hyperbolic cosecant function, the differential dynamical equations are considerably simplified. Phase space and dynamical systems for both cases are achieved. When we calculate the critical points for case 2, amazingly interesting behaviors of self-consistency and auto-normalization are exhibited, which is a strong support for the new model,along with a forever positive sound speed. The process of virial collapse in Cardassian cosmos is analyzed. Power-style Cardassian term is employed for its simplicity.Calculation declares that virial collapse of matter alone isforbidden. Yet Cardassian has excellent ability for virial collapse,after the virial collapse ending up with a stable sphere, the ratio of the ultimate radius to the original radius depends on the adjustable parameters in Cardassian term. And, the mixture of GF fluid and matter could conduct virial collapse, the ratio of the ultimate radius to the original radius depends on the adjustable parameters in Cardassian term, too. No singularity is generated.
Topological Invariants in Point Group Symmetric Photonic Topological Insulators
Xiao-Dong Chen,Zi-Lan Deng,Wen-Jie Chen,Jia-Rong Wang,Jian-Wen Dong
Physics , 2014,
Abstract: We proposed a group-theory method to calculate topological invariant in bi-isotropic photonic crystals invariant under crystallographic point group symmetries. Spin Chern number has been evaluated by the eigenvalues of rotation operators at high symmetry k-points after the pseudo-spin polarized fields are retrieved. Topological characters of photonic edge states and photonic band gaps can be well predicted by total spin Chern number. Nontrivial phase transition is found in large magnetoelectric coupling due to the jump of total spin Chern number. Light transport is also issued at the {\epsilon}/{\mu} mismatching boundary between air and the bi-isotropic photonic crystal. This finding presents the relationship between group symmetry and photonic topological systems, which enables the design of photonic nontrivial states in a rational manner.
Temporal Sequence of Visuo-Auditory Interaction in Multiple Areas of the Guinea Pig Visual Cortex
Masataka Nishimura, Wen-Jie Song
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0046339
Abstract: Recent studies in humans and monkeys have reported that acoustic stimulation influences visual responses in the primary visual cortex (V1). Such influences can be generated in V1, either by direct auditory projections or by feedback projections from extrastriate cortices. To test these hypotheses, cortical activities were recorded using optical imaging at a high spatiotemporal resolution from multiple areas of the guinea pig visual cortex, to visual and/or acoustic stimulations. Visuo-auditory interactions were evaluated according to differences between responses evoked by combined auditory and visual stimulation, and the sum of responses evoked by separate visual and auditory stimulations. Simultaneous presentation of visual and acoustic stimulations resulted in significant interactions in V1, which occurred earlier than in other visual areas. When acoustic stimulation preceded visual stimulation, significant visuo-auditory interactions were detected only in V1. These results suggest that V1 is a cortical origin of visuo-auditory interaction.
Edge effect of intercepted fog water by forest canopy at a rubber plantation in Xishuangbanna, Southwest China
热带人工橡胶林林冠截留雾水的边缘效应研究

LIU Wen-Jie,
刘文杰

生态学报 , 2004,
Abstract: 利用 2 0 0 1年 1 1月~ 2 0 0 2年 1 0月的林缘和林内雾水截留及相关环境因子观测资料 ,对西双版纳热带人工橡胶林林冠截留雾水的边缘效应进行了研究。西双版纳热带人工橡胶林内的雾日数及雾日频率呈现明显的季节变化 ,全年雾日数可达 1 72 d,其中雾季 (1 1~翌年 2月份 )的雾日数及雾日频率最多 (高 ) ,月均雾日数可达 2 3d(76 .7% )。由林缘至林内 ,年雾水截留量在迎风面和背风面均呈现指数形式急剧减小 ,二者均是在林缘最边行外测的林冠下 (0 m处 )达到最大 ,分别为 4 1 .1 mm和 2 4 .3mm。迎风面和背风面林缘 0 m处的雾水截留量分别是林内雾水截留量 (1 6 .2 mm )的 2 .5倍和 1 .5倍。迎风面雾水截留在林内约 2 5 m处趋于稳定 ,而背风面在林内约 1 5 m处趋于稳定。林缘处的雾水截留量与日 0 :0 0~ 1 0 :0 0平均风速呈显著的正相关(P<0 .0 1 )。风速大 ,则雾水截留的边缘效应向林内越深入 ,且空间变异性减小。相对于迎风面林缘 0 m处的雾水截留而言 ,大的风速将削弱林内和林缘雾水截留量的差别 ,从而导致更多的雾水进入森林
The microclimate of dew and fog formation on canopy layer in the dry season in Xishuangbanna tropical rain forest
西双版纳热带雨林干季林冠层雾露形成的小气候特征研究

LIU Wen-Jie,
刘文杰

生态学报 , 2001,
Abstract: The microclimatic characteristics of the dew and fog formation on canopy layer within a tropical rain forest,dominated by \%Terminalia myriocarpa \% in Xishuangbanna were measured in the dry\|hot season.We investigated the net all\|wave radiation,air humidity,vertical air temperature gradient,and maximum and minimum air,ground surface and leaf surface temperatures.The results indicated that in the night,the dew and fog occured first on the top canopy layer,then the thickened fog penetrated into understory,and the formation time of the dew in the understory was 3~4 hours later than on the canopy layer.Before fog occuring the temperature was higher at 1.5m above the canopy than that on the leaf surface,and the temperature was lower after fog occuring.In the meantime the leaf surface temperature and air temperature were all rising after the fog occuring.The formation of the dew and fog not only condenses water vapour into the forest but also reduces the drop intensity of the temperature in the forest.This is of great ecological importance to the growth and development of the tropical rain forest.
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