oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 14 )

2019 ( 113 )

2018 ( 717 )

2017 ( 594 )

Custom range...

Search Results: 1 - 10 of 44085 matches for " Zhongliang Wu "
All listed articles are free for downloading (OA Articles)
Page 1 /44085
Display every page Item
Precursor-Like Anomalies prior to the 2008 Wenchuan Earthquake: A Critical-but-Constructive Review
Tengfei Ma,Zhongliang Wu
International Journal of Geophysics , 2012, DOI: 10.1155/2012/583097
Abstract: Results published since the last three years on the observations of the precursor-like anomalies before the May 12, 2008, Wenchuan, 8.0 earthquake are collected and analyzed. These retrospective case studies would have provided heuristic clues about the preparation process of this inland great earthquake and the predictability of this destructive event if the standards for the rigorous test of earthquake forecast schemes were strictly observed. At least in some of these studies, however, several issues still need to be further examined to confirm or falsify the connection of the reported observations with the Wenchuan earthquake. Some of the problems are due to the inevitable limitation of observational infrastructure at the recent time, but some of the problems are due to the lack of communication about the test of earthquake forecast schemes. For the interdisciplinary studies on earthquake forecast, reminding of the latter issue seems of special importance for promoting the works and cooperation in this field.
Precursor-Like Anomalies prior to the 2008 Wenchuan Earthquake: A Critical-but-Constructive Review
Tengfei Ma,Zhongliang Wu
International Journal of Geophysics , 2012, DOI: 10.1155/2012/583097
Abstract: Results published since the last three years on the observations of the precursor-like anomalies before the May 12, 2008, Wenchuan, 8.0 earthquake are collected and analyzed. These retrospective case studies would have provided heuristic clues about the preparation process of this inland great earthquake and the predictability of this destructive event if the standards for the rigorous test of earthquake forecast schemes were strictly observed. At least in some of these studies, however, several issues still need to be further examined to confirm or falsify the connection of the reported observations with the Wenchuan earthquake. Some of the problems are due to the inevitable limitation of observational infrastructure at the recent time, but some of the problems are due to the lack of communication about the test of earthquake forecast schemes. For the interdisciplinary studies on earthquake forecast, reminding of the latter issue seems of special importance for promoting the works and cooperation in this field. 1. Introduction At least partly due to the tremendous loss of life and property and the intense social impact [1], the Wenchuan earthquake that occurred on May 12, 2008, in Sichuan Province of southwest China, has attracted widespread attention not only in seismological communities but also in other scientific communities. Since the occurrence of the Wenchuan earthquake, there have been some 300 papers published related to the precursor-like anomaly observations prior to this great earthquake, making it necessary for a systematic collection and comprehensive analysis of these materials. The necessity of such collection and analysis is further highlighted by the fact that over 3/4 of these publications are in Chinese with/without English abstract (with some of them being similar to, or just simply a repetition of the English publications) and quite a few of these publications are actually not known to international seismological communities. This is, similar to the situation of other developing countries [2], a characteristic of the scientific publications in China. In the study of earthquake forecast/prediction, China seems of special features in that earthquake forecast/prediction has been kept for a long time as a nationwide scientific goal, even if there were intense debates on the predictability of earthquakes in the international seismological communities [3]. From merely the number of papers published, the Wenchuan earthquake might be one of the special, or even unique, events with so many studies on its forecast or preshock anomalies. If
Using Internet reports for early estimates of the final death toll of earthquake-generated tsunami: the March 11, 2011, Tohoku, Japan, earthquake
Xiaolin Yang,Zhongliang Wu,Yingchun Li
Annals of Geophysics , 2011, DOI: 10.4401/ag-5169
Abstract: A retrospective case study was conducted for the March 11, 2011, earthquake that occurred off the east Pacific coast of Tohoku, Japan, with reference to the Sumatra-Andaman earthquake and Indian Ocean tsunami on December 26, 2004. The regularities of the temporal variations of the number of deaths reported through the Internet is used to make an early stage quick-and-rough estimate to assist in the emergency decision making, and to continue the revision of the estimate as new data comes in. The quick-and-rough estimate of the final fatalities that was obtained on the second day after the earthquake is shown to agree with the final reported fatalities to within an order of magnitude. This also has an added advantage over other estimation models, in that the estimates can be updated with new data as they become available.
On the Applications of Modern Educational Technology in Maritime English Teaching from the Perspective of Constructivism
Zhongliang Cui
English Language Teaching , 2010, DOI: 10.5539/elt.v3n3p244
Abstract: Nowadays maritime transportation has become a major modern logistics because of its large capacity and low cost. English plays a leading role in the industry of maritime transportation. It is the most important medium and an indispensable communication tool in international business and global marine industry. Maritime English teaching has made some progress in China since 1990s. However, the applications of modern educational technology in maritime English teaching are still at its preliminary stage when compared to its current status abroad. Research on maritime English teaching has been very limited. This has raised a realistic question on current maritime English teaching: how can we improve maritime English teaching so that more people can be trained to be more competent in international business and trade.
Hedging Against the Interest-rate Risk by Measuring the Yield-curve Movement
Zhongliang Tuo
Quantitative Finance , 2013,
Abstract: By adopting the polynomial interpolation method, we propose an approach to hedge against the interest-rate risk of the default-free bonds by measuring the nonparallel movement of the yield-curve, such as the translation, the rotation and the twist. The empirical analysis shows that our hedging strategies are comparable to traditional duration-convexity strategy, or even better when we have more suitable hedging instruments on hand. The article shows that this strategy is flexible and robust to cope with the interest-rate risk and can help ?fine-tune a position as time changes.
Mycoplasma genitalium Lipoproteins Induce Human Monocytic Cell Expression of Proinflammatory Cytokines and Apoptosis by Activating Nuclear Factor B
Yimou Wu,Hong Qiu,Yanhua Zeng,Xiaoxing You,Zhongliang Deng,Minjun Yu,Cuiming Zhu
Mediators of Inflammation , 2008, DOI: 10.1155/2008/195427
Abstract: This study was designed to investigate the molecular mechanisms responsible for the induction of proinflammatory cytokines gene expression and apoptosis in human monocytic cell line THP-1 stimulated by lipoproteins (LPs) prepared from Mycoplasma genitalium. Cultured cells were stimulated with . genitalium LP to analyze the production of proinflammatory cytokines and expression of their mRNA by ELISA and RT-PCR, respectively. Cell apoptosis was also detected by Annexin V-FITC-propidium iodide (PI) staining and acridine orange (AO)-ethidium bromide (EB) staining. The DNA-binding activity of nuclear factor-B (NF-B) was assessed by electrophoretic mobility shift assay (EMSA). Results showed that LP stimulated THP-1 cells to produce tumor necrosis factor- (TNF-), interleukin-1 (IL-1), and IL-6 in a dose-dependent manner. The mRNA levels were also upregulated in response to LP stimulation. LPs were also found to increase the DNA-binding activity of NF-B, a possible mechanism for the induction of cytokine mRNA expression and the cell apoptosis. These effects were abrogated by PDTC, an inhibitor of NF-B. Our results indicate that . genitalium-derived LP may be an important etiological factor of certain diseases due to the ability of LP to produce proinflammatory cytokines and induction of apoptosis, which is probably mediated through the activation of NF-B.
Interaction of Restin with transcription factors
Yousheng Wu,Fan Lu,Yinxin Qi,Ruihua Wang,Jian Zhang,Zifan Lu,Zhongliang Zhao
Science China Life Sciences , 2005, DOI: 10.1007/BF03183619
Abstract: Restin, a member of melanoma-associated antigen superfamily gene, was first cloned from differentiated leukemia cell induced by all trans-retinoic acid, and was able to inhibit cell proliferation, but the molecular mechanism was not clear. Since Restin was localized in cell nucleus, and its homolog member, Necdin (neuronal growth suppressor factor), could interact with transcription factors p53 and E2F1, we proposed that Restin might also function as Necdin through interacting with some transcription factors. In this study, transcription factors p53, AP1, ATFs and E2Fs were cloned and used in the mammalian two-hybrid system to identify their interaction with Restin. The results showed that only ATF3 had a strong interaction with Restin. It is interesting to know that ATF3 was an important transcription factor for G1 cell cycle initiation in physiological stress response. It was possible that the inhibition of cell proliferation by Restin might be related with the inhibition of ATF3 activity.
Interfacial reaction between the oxidized SiC particles and Al-Mg alloys
Zhongliang Shi,Mingyuan Gu,Junyou Liu,Guoquan Liu,Jae-chul Lee,Di Zhang,Renjie Wu
Chinese Science Bulletin , 2001, DOI: 10.1007/BF02901903
Abstract: The interfacial reactions of oxidized SiC particles reinforced Al-Mg matrix composites were investigated by the field emission-scanning electron microscopy (FE-SEM), TEM and X-ray diffraction. It was found that the nanoscale MgO forms initially due to the interfacial reaction, then whether it reacts with molten Al continuously or not depends on the content of Mg in the matrix and its covering densification at the surface of particles. When there is not enough Mg in the matrix for the formation of dense MgO layer, MgO will transform into MgAl2O4 crystal owing to the continuous reaction with SiO2 and molten Al. When dense MgO layer forms at the surface of the particles due to the affluence of Mg for the initial reaction, it will protect the inner SiC from the attack of molten Al. However, the reaction products of both MgO and MgAl2O4 are thermo-stable phases at the surface of the particles under high temperature. The results clarify the interfacial reaction route and they are of great value to the control of the interfacial reactions and their interfacial design of the composites.
Numerical simulation of March 11, 2011 Honshu, Japan tsunami
HuiMin Jing,Huai Zhang,ZhongLiang Wu,David A. Yuen,YaoLin Shi
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-012-5229-5
Abstract: In order to predict tsunami hazards through numerical simulation, by using the focal mechanisms as well as fault parameters of Japan’s 2011 Tohoku Earthquake provided by National Geological Survey (referred to as USGS), we proposed a numerical model to simulate the Honshu, Japan tsunami. Numerical computing is conducted to investigate the security along the coast. We also analyzed the simulation results and distribution of tsunami disaster, trying to achieve a more reasonable tsunami warning program. Our numerical model is composed of simulation of surface deformation after the earthquake and the tsunami propagation process which is based on two dimensional shallow water equations. The simulation results show the characteristics of the tsunami propagation, and arrival times on recorder points are consistent with tsunami observation. This model can be applied to evaluate the security of the coastal area and obtain more accurate tsunami warning.
Transcriptional upregulation of restin by p53
RuiHua Wang,Fan Lu,HaiYan Fu,YouSheng Wu,GuoDong Yang,WenMing Zhao,ZhongLiang Zhao
Science China Life Sciences , 2007, DOI: 10.1007/s11427-007-2039-0
Abstract: Restin, belonging to the melanoma-associated antigen superfamily, was firstly cloned from the differentiated HL-60 cells when induced by all-trans retinoic acid (ATRA) in our lab. Our previous results showed that restin might be correlated to cell cycle arrest. Due to the importance of p53 in the regulation of cell growth and the relationship between p53 and ATRA, we tried to test the relationship between p53 and restin. Firstly, transfection results showed that p53 was able to upregulate the expression of restin at the transcriptional level when p53 was transfected into eukaryotic cells. Secondly, the bioinformatics analysis revealed that the upstream sequence (about 2 kb) from the first ATG of the ORF of restin gene contained a p53 binding site. In order to confirm that p53 was involved in the transcriptional regulation of restin, we cloned the upstream sequence of restin and constructed the promoter luciferase reporter system. From the luciferase activity, we demonstrated that the promoter of restin gene could be induced by ATRA. Then, another two luciferase reporter plasmids driven by the reporter of restin with no (RPΔp53-luc) or mutant (mRP-luc) p53 binding site were constructed to see the regulation of restin by p53. Results showed that the transcriptional upregulation of restin gene was not due to the putative p53 binding site on the upstream of restin gene. We proposed that p53 upregulated restin transcription through an indirect way rather than direct interaction with the cis-activating element of the restin promoter.
Page 1 /44085
Display every page Item


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