oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 81 )

2018 ( 548 )

2017 ( 530 )

Custom range...

Search Results: 1 - 10 of 30981 matches for " YE Jing "
All listed articles are free for downloading (OA Articles)
Page 1 /30981
Display every page Item
Electromagnetically-Induced-Transparency-Like Effect in the Degenerate Triple-Resonant Optical Parametric Amplifier
Chenguang Ye,Jing Zhang
Physics , 2008, DOI: 10.1364/OL.33.001911
Abstract: We investigate experimentally the absorptive and dispersive properties of triple-resonant optical parametric amplifier OPA for the degenerate subharmonic field. In the experiment, the subharmonic field is utilized as the probe field and the harmonic wave as the pump field. We demonstrate that EIT-like effect can be simulated in the triple-resonant OPA when the cavity line-width for the harmonic wave is narrower than that for the subharmonic field. However, this phenomenon can not be observed in a double-resonant OPA. The narrow transparency window appears in the reflected field. Especially, in the measured dispersive spectra of triple-resonant OPA, a very steep variation of the dispersive profile of the subharmonic field is observed, which can result in a slow light as that observed in atomic EIT medium.
Blockade of Brain γ-Aminobutyric Acid a Receptors Antagonizes Hypnotic Action of Isoflurane in Rats―GABA Receptor and Isoflurane Induced Hypnosis  [PDF]
Ming Xiong, Ralph L. da Graca, Jing Li, Harshitha Kota, Jiang-Hong Ye
Journal of Behavioral and Brain Science (JBBS) , 2011, DOI: 10.4236/jbbs.2011.13025
Abstract: Although in vitro studies have demonstrated that isoflurane potentiates the function of γ-aminobutyric acid A receptors (GABAARs), the in vivo data are controversial. To determine if GABAARs contribute to the loss-of righting reflex (LORR) induced by isoflurane, we studied the LORR in the absence and presence of gabazine, a competitive GABAAR antagonist, in Sprague-Dawley rats anesthetized with either isoflurane or ketamine. Administration of isoflurane and ketamine induced LORR in a dose-dependent manner. Gabazine significantly antagonized the effect of isoflurane and shifted the dose response curve to the right. In addition, gabazine prolonged the onset time of LORR induced by isoflurane. Ketamine induced LORR was not affected by gabazine. This indicates that centrally administered gabazine selectively blocks the effect of isoflurane, and the effect of gabazine is not due to a non-specific CNS excitatory action. These results suggest that the hypnotic effect of isoflurane is at least in part mediated by GABAARs.
An Empirical Test on the Validity of China’s Fiscal Policy ——Based on the Ricardian Equivalence Proposition
Wen Fang,Jing Ma,Ye Sheng
International Journal of Business and Management , 2010, DOI: 10.5539/ijbm.v5n8p209
Abstract: The Ricardian Equivalence Proposition is the essential proposition relevant to fiscal policy, which arouses general discussions on the research of macroeconomic policies. Its establishment is rather difficult in reality as it requires comparatively strict hypothesis. All the empirical studies on the Ricardian Equivalence Proposition have not come into agreement so far. The purpose of this paper is to analyze the dynamic effect of China’s fiscal policy by utilizing impulse response function on the basis of establishing SVAR model which contains China’s fiscal variables. Consequently we make an empirical conclusion that the Ricardian Equivalence Proposition is untenable on China’s economy.
Effect of Antioxidant Vitamin Supplementation on Cardiovascular Outcomes: A Meta-Analysis of Randomized Controlled Trials
Yizhou Ye, Jing Li, Zhongxiang Yuan
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0056803
Abstract: Background Antioxidant vitamin (vitamin E, beta-carotene, and vitamin C) are widely used for preventing major cardiovascular outcomes. However, the effect of antioxidant vitamin on cardiovascular events remains unclear. Methodology and Principal Findings We searched PubMed, EmBase, the Cochrane Central Register of Controlled Trials, and the proceedings of major conferences for relevant literature. Eligible studies were randomized controlled trials that reported on the effects of antioxidant vitamin on cardiovascular outcomes as compared to placebo. Outcomes analyzed were major cardiovascular events, myocardial infarction, stroke, cardiac death, total death, and any possible adverse events. We used the I2 statistic to measure heterogeneity between trials and calculated risk estimates for cardiovascular outcomes with random-effect meta-analysis. Independent extraction was performed by two reviewers and consensus was reached. Of 293 identified studies, we included 15 trials reporting data on 188209 participants. These studies reported 12749 major cardiovascular events, 6699 myocardial infarction, 3749 strokes, 14122 total death, and 5980 cardiac deaths. Overall, antioxidant vitamin supplementation as compared to placebo had no effect on major cardiovascular events (RR, 1.00; 95%CI, 0.96–1.03), myocardial infarction (RR, 0.98; 95%CI, 0.92–1.04), stroke (RR, 0.99; 95%CI, 0.93–1.05), total death (RR, 1.03; 95%CI, 0.98–1.07), cardiac death (RR, 1.02; 95%CI, 0.97–1.07), revascularization (RR, 1.00; 95%CI, 0.95–1.05), total CHD (RR, 0.96; 95%CI, 0.87–1.05), angina (RR, 0.98; 95%CI, 0.90–1.07), and congestive heart failure (RR, 1.07; 95%CI, 0.96 to 1.19). Conclusion/Significance Antioxidant vitamin supplementation has no effect on the incidence of major cardiovascular events, myocardial infarction, stroke, total death, and cardiac death.
Differentiation between Benign and Malignant Breast Lesions Using ADC on Diffusion-Weighted Imaging at 3.0 T  [PDF]
Vikash Kr Gupta, Wanhua Liu, Rui Wang, Yuanyuan Ye, Jing Jiang
Open Journal of Radiology (OJRad) , 2016, DOI: 10.4236/ojrad.2016.61001
Abstract: Aim: To investigate the diagnostic efficiency of apparent diffusion coefficient value (ADC) in differentiating benign from malignant breast lesions at 3.0 T diffusion-weighted imaging with different pair of b value. Methods: Total 110 patients with 107 lesions (44 benign and 63 malignant) were selected for our study with five different b-values 0, 400, 800, 1200 and 1600 s/mm2. ADC values were calculated using different pairs of b values. The cut-off ADC values and diagnostic efficiency were evaluated by receiver operating characteristic analysis. Comparison of Mean ADC value for breast lesions was determined by using independent sample t test. ROC curves were used for diagnostic efficiency of ADC using different pairs of b values. Results: With increase of b value, mean ADC value decreases. The mean ADC values for benign were 1.73 × 10-3 mm2/s for b 0 and 400, 1.57 × 10-3 mm2/s for b 0 and 800, 1.43 × 10-3 mm2/s for b 0 and 1200 and 1.30 × 10-3 mm2/s for b 0 and 1600 s/mm2. The mean ADC values for the malignant breast lesion were 1.21 × 10-3 mm2/s for b 0 and 400, 1.06 × 10-3 mm2/s for b 0 and 800, 0.94 × 10-3 mm2/s for b 0 and 1200 and 0.86 × 10-3 mm2/s for b 0 and 1600 s/mm2. ADC diagnostic efficiency for benign and malignant lesion for all the pair of b value combination was significant (p > 0.05). The sensitivity, specificity, PPV, NPV and accuracy were 80.95%, 90.9%, 92.72%, 76.92%, 85.04% for b 0 and 400; 84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 800; 84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 1200; 84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 1600 s/mm2 respectively. Conclusion: DWI is effective in differentiating benign and malignant breast lesion at 3.0 Tesla using ADC with higher b value combination.
Cloning and Characterization of a Mitogen-Activated Protein Kinase Gene 84KMPK14 in Hybrid Poplar (Populus alba × P. glandulosa cv. “84K”)  [PDF]
Ye Zhao, Dan Wang, Yongqiang Zhang, Yajie Niu, Xiaojuan Zong, Yan Ma, Xianfeng Guo, Jing Guo
American Journal of Plant Sciences (AJPS) , 2018, DOI: 10.4236/ajps.2018.913186
Abstract: Mitogen-activated protein kinases (MAPKs) are important components in signal transduction modules which play crucial roles in regulation of many biological processes in plants. Although genome-wide analysis of MAPK and MAPKK family has been carried out in poplar species, few data about the biological function analysis of this gene family are available to date. In this study, a group C MAPK gene 84KMPK14 was cloned from hybrid poplar (Populus alba × P. glandulosa cv. 84K). It contained a typical protein kinase domain, a conserved TEY-motif and an atypical conserved common docking (CD) domain. Sequence alignment revealed that 84KMPK14 was the most homologous to Populus trichocarpa PtMPK14. Expression analysis indicated
Method for Single Intravenous Anesthetic Infusion in a Rodent Model  [PDF]
Shawn K Puri, Jing Li, Ming Xiong, Johan Reyes, Pratap R. Nadavaluru, Jiang Hong Ye, Alex Bekker
Open Journal of Anesthesiology (OJAnes) , 2015, DOI: 10.4236/ojanes.2015.55019
Abstract: Venous catheterization, endotracheal intubation, and mechanical ventilation are necessary for performing total intravenous general anesthesia in rats. Intubation and IV cannulation of the rat is challenging because of the animals’ small size and the lack of equipment specifically designed for the restricted anatomical dimensions. Here, we present methods for tail venous catheterization and intubation that are quickly learned by the provider with clinical operating room experience but lack experience in the lab. For tail venous catheterization, each rat (n = 20) was gently restrained in a rat chamber; its tail was placed in warm water for 10 minutes, and a 24 gauge intravenous catheter was inserted into the lateral tail vein. The catheter was fixed in place using tape and attached to a T-connector for drug administration. A bolus of propofol (n = 10), ketamine (n = 7), or etomidate (n = 3) was administered to achieve rapid deep anesthesia. Once anesthetized, rats were intubated with the aid of a modified pediatric laryngoscope. The standard miller blade 0 was cut on each side for approximately 2/3 of the total blade length to remove a total of half the width. After the ventilator was properly set, the rats’ vital signs and metabolic status were monitored. Throughout the one-hour infusion, the rats’ physiologic parameters were maintained within normal range. These results indicate that intravenous general anesthesia can be performed effectively and safely in small animals using the refined catheterization and intubation methods tested in this study. These techniques are easily reproducible and learned as they mimic the tools and strategies commonly used in the OR.
Evaluation Method for Tunneling Stability of TBM Cutterhead  [PDF]
Zhaohui Xu, Ye Er-ken?Zha Mu-ti, Lin Xue, Fengtao Wang, Jing Chen, Junzhou Huo
World Journal of Engineering and Technology (WJET) , 2019, DOI: 10.4236/wjet.2019.72B001
Abstract:
In the process of tunneling of tunnel boring machine (TBM), different geological conditions often correspond to different working conditions, and the randomness of geological conditions also causes the order of occurrence of each working condition to be different. Under the conversion of different working conditions, this makes the vibration of different types of cutterheads different. How to choose the appropriate type of cutterhead according to different geological conditions is very important for saving engineering cost and increasing cutterhead life. In view of the above situation, this paper proposes a stability evaluation method during the TBM tunneling process to select the appropriate cutterhead type. Firstly, the corresponding relationship between geology and working conditions is established according to different geological conditions, and the input loads corresponding to geological conditions are obtained. Then, it is substituted into the dynamic model of the cutterhead system, the vibration response boundaries of each degree of freedom are obtained by solving. And the average value of the maximum boundary amplitude of each degree of freedom is taken to represent the extreme vibration of the cutterhead under the corresponding working conditions. Finally, by comparing the fluctuation of the ultimate vibration amplitude of each type of cutterhead in the process of working condition conversion, the results are as follows: when the transition between homogeneous strata and composite strata is normal and there is no large turning and deviation correction, the vibration response of the two-part cutterhead is the smallest, and the two-part cutterhead is the best choice. Otherwise, the five-part cutterhead is the best choice, while the stability of the integrated cutterhead is the worst.
Brain Structure Segmentation from MRI by Geometric Surface Flow
Greg Heckenberg,Yongjian Xi,Ye Duan,Jing Hua
International Journal of Biomedical Imaging , 2006, DOI: 10.1155/ijbi/2006/86747
Abstract: We present a method for semiautomatic segmentation of brain structures such as thalamus from MRI images based on the concept of geometric surface flow. Given an MRI image, the user can interactively initialize a seed model within region of interest. The model will then start to evolve by incorporating both boundary and region information following the principle of variational analysis. The deformation will stop when an equilibrium state is achieved. To overcome the low contrast of the original image data, a nonparametric kernel-based method is applied to simultaneously update the interior probability distribution during the model evolution. Our experiments on both 2D and 3D image data demonstrate that the new method is robust to image noise and inhomogeneity and will not leak from spurious edge gaps.
Electroacupuncture Decreases Excessive Alcohol Consumption Involving Reduction of FosB/ΔFosB Levels in Reward-Related Brain Regions
Jing Li, Yanan Sun, Jiang-Hong Ye
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0040347
Abstract: New therapies are needed for alcohol abuse, a major public health problem in the U.S. and worldwide. There are only three FDA-approved drugs for treatment of alcohol abuse (naltrexone, acamprosate and disulfuram). On average these drugs yield only moderate success in reducing long-term alcohol consumption. Electroacupuncture has been shown to alleviate various drugs of abuse, including alcohol. Although previous studies have shown that electroacupuncture reduced alcohol consumption, the underlying mechanisms have not been fully elucidated. ΔFosB and FosB are members of the Fos family of transcription factors implicated in neural plasticity in drug addiction; a connection between electroacupuncture's treatment of alcohol abuse and the Fos family has not been established. In this study, we trained rats to drink large quantities of ethanol in a modified intermittent access two-bottle choice drinking procedure. When rats achieved a stable baseline of ethanol consumption, electroacupuncture (100 Hz or 2 Hz, 30 min each day) was administered at Zusanli (ST36) for 6 consecutive days. The level of FosB/ΔFosB in reward-related brain regions was assessed by immunohistochemistry. We found that the intake of and preference for ethanol in rats under 100 Hz, but not 2 Hz electroacupuncture regiment were sharply reduced. The reduction was maintained for at least 72 hours after the termination of electroacupuncture treatment. Conversely, 100 Hz electroacupuncture did not alter the intake of and preference for the natural rewarding agent sucrose. Additionally, FosB/ΔFosB levels in the prefrontal cortex, striatal region and the posterior region of ventral tegmental area were increased following excessive ethanol consumption, but were reduced after six-day 100 Hz electroacupuncture. Thus, this study demonstrates that six-day 100 Hz electroacupuncture treatment effectively reduces ethanol consumption and preference in rats that chronically drink excessive amount of ethanol. This effect of electroacupuncture may be mediated by down-regulation of FosB/ΔFosB in reward-related brain regions.
Page 1 /30981
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.