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Search Results: 1 - 10 of 28714 matches for " Min Gu "
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Hit a new high
Min Zhuo, Jianguo Gu
Molecular Pain , 2008, DOI: 10.1186/1744-8069-4-4
Abstract: While we welcome the arrival of 2008, we are also celebrating the fourth birthday of Molecular Pain. On behalf of the Molecular Pain editorial team, we would like to take this opportunity to wish a happy new year to our readers, authors, reviewers, editorial board members and staff. We also would like to thank all of you for the strong support during the past four years Your contribution and support has pushed Molecular Pain to hit a new high with an impact factor of 3.93. As the first online open access journal in pain research field, Molecular Pain has allowed novel scientific discovery in the field of pain research to be published in a timely fashion and to be accessed freely by anyone at any place in the world. This has had a strong and positive impact in the pain and neuroscience research fields.In 2007, pain researchers and neuroscientists have witnessed the rapid and healthy growth of Molecular Pain. Molecular Pain is now officially accepted and tracked by the ISI Web of Science. As a result, each citation of an article published in Molecular Pain is counted online. The inclusion of Molecular Pain online by the ISI Web of Science has also allowed us to monitor the citation of each article published in Molecular Pain as well as to calculate the impact factor of Molecular Pain. Although the exact significance of the impact factor remains to be debated (see reference [1]), we believe that the impact factor is a most valued measurement of the performance of the journal. ISI Web of Science has been tracking Molecular Pain since 2006 and will announce the first official impact factor of Molecular Pain in 2009. As calculated but not yet announced officially, Molecular Pain hit an impact factor of 3.14 at the end of 2006 and 3.93 at the end of 2007. The official impact factor, to be announced next year by ISI, will most likely hit a higher score as a result of an extra year of citation tracking being included.The online and open access has let articles published in M
Progress and future of molecular pain
Jianguo Gu, Min Zhuo
Molecular Pain , 2007, DOI: 10.1186/1744-8069-3-2
Abstract: The new year of 2007 marks the two-year anniversary of Molecular Pain. We take this opportunity to wish our authors and readers a productive and successful new year, and we hope you will be with Molecular Pain in the coming years. We thank reviewers and editorial board members of Molecular Pain for your strong support. Your contribution, support, and suggestion will remain to be important for Molecular Pain in the coming years. Molecular pain research field is expanding and publication with our journal will become more active.Two years ago, in the preparation for launching Molecular Pain, some pain researchers questioned whether we were indeed in the era of "molecular pain" and whether Molecular Pain was an appropriate title for this journal. Instead of waiting for a complete answer, Molecular Pain editors went ahead set up the platform for our pain researchers who share the same vision with us. Over the past two years, Molecular Pain has published papers that covered pain topics from genetics, molecular biology, synaptic mechanism, to novel animal models and human functional imaging studies. Molecular Pain is now recognized by many pain researchers and neuroscientists as an effective forum for communicating their novel research findings. The effectiveness comes from our online publication in a timely fashion and the open access to everyone around the world without any barrage.The publication punctuality is essential for researchers who have novel findings in today's highly competitive "research market". Molecular Pain reviewers, editors and BMC have been working hard and making every effort to ensure timely processing and publishing papers that are submitted to Molecular Pain. Powered by BMC online system for manuscript processing, publication speed of Molecular Pain is ranked on the top list among peer-review scientific journals. In average, it only takes 60 days from receiving a manuscript to its publication online in Molecular Pain. On the other hand, profession
Effects of Liangxue Jiedu Decoction in treating psoriasis in a mouse psoriasis model
Min-jie GU
Zhong Xi Yi Jie He Xue Bao , 2009,
Abstract: Objective: To study the effects of Liangxue Jiedu Decoction, a compound traditional Chinese herbal medicine with the function of blood-cooling and detoxicating, in treating psoriasis in mice and to explore its mechanism.Methods: (1) Sixty mice were randomly divided into Liangxue Jiedu Decoction group, compound Indigo Naturalis capsule group, acitretin capsule group and normal saline group. Another 10 mice were selected as blank control. After 2-week administration, mice were sacrificed to obtain samples. After hematoxylin and eosin (HE) staining, tail scales with granular layers were calculated by an optical microscope. (2) Except for ten mice in blank group, sixty female mice were injected intraperitoneally with diethylstilbestrol once daily. After 3-day injection, mice were randomly divided into four groups and treated as above description. After 2-week treatment, all mice were injected intraperitoneally with colchicine (2 mg/kg), and sacrificed 6 h after the injection. The mitotic rate in virginal epithelium was calculated after HE staining.Results: Compared with normal saline, Liangxue Jiedu Decoction could significantly inhibit the mitosis of mouse vaginal epithelium (P<0.01) and promote the formation of granular layers in mouse tail-scale epidermis (P<0.01).Conclusion: The mechanism of Liangxue Jiedu Decoction in treating psoriasis may be related to promoting granular cell growth and inhibiting proliferation of epidermic cells.
Radiation Pressure-supported Accretion Disks: Vertical Structure, Energy Advection, and Convective Stability
Wei-Min Gu
Physics , 2012, DOI: 10.1088/0004-637X/753/2/118
Abstract: By taking into account the local energy balance per unit volume between the viscous heating and the advective cooling plus the radiative cooling, we investigate the vertical structure of radiation pressure-supported accretion disks in spherical coordinates. Our solutions show that the photosphere of the disk is close to the polar axis and therefore the disk seems to be extremely thick. However, the profile of density implies that most of the accreted matter exists in a moderate range around the equatorial plane. We show that the well-known polytropic relation between the pressure and the density is unsuitable for describing the vertical structure of radiation pressure-supported disks. More importantly, we find that the energy advection is significant even for slightly sub-Eddington accretion disks. We argue that the non-negligible advection may help to understand why the standard thin disk model is likely to be inaccurate above \sim 0.3 Eddington luminosity, which was found by some works on the black hole spin measurement. Furthermore, the solutions satisfy the Solberg-Hoiland conditions, which indicates the disk to be convectively stable. In addition, we discuss the possible link between our disk model and ultraluminous X-ray sources.
Mechanism of Outflows in Accretion System: Advective Cooling Cannot Balance Viscous Heating?
Wei-Min Gu
Physics , 2014, DOI: 10.1088/0004-637X/799/1/71
Abstract: Based on no-outflow assumption, we investigate steady state, axisymmetric, optically thin accretion flows in spherical coordinates. By comparing the vertically integrated advective cooling rate with the viscous heating rate, we find that the former is generally less than 30% of the latter, which indicates that the advective cooling itself cannot balance the viscous heating. As a consequence, for radiatively inefficient flows with low accretion rates such as $\dot M \la 10^{-3} \dot M_{Edd}$, where $\dot M_{Edd}$ is the Eddington accretion rate, the viscous heating rate will be larger than the sum of the advective cooling rate and the radiative cooling one. Thus, no thermal equilibrium can be established under the no-outflow assumption. We therefore argue that in such case outflows ought to occur and take away more than 70% of the thermal energy generated by viscous dissipation. Similarly, for optically thick flows with extremely large accretion rates such as $\dot M \ga 10 \dot M_{Edd}$, outflows should also occur due to the limited advection and the low efficiency of radiative cooling. Our results may help to understand the mechanism of outflows found in observations and numerical simulations.
Flexible GPBi-CG Method for Nonsymmetric Linear Systems  [PDF]
Jia-Min Wang, Tong-Xiang Gu
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.34050
Abstract: We present a flexible version of GPBi-CG algorithm which allows for the use of a different preconditioner at each step of the algorithm. In particular, a result of the flexibility of the variable preconditioner is to use any iterative method. For example, the standard GPBi-CG algorithm itself can be used as a preconditioner, as can other Krylov subspace methods or splitting methods. Numerical experiments are conducted for flexible GPBi-CG for a few matrices including some nonsymmetric matrices. These experiments illustrate the convergence and robustness of the flexible iterative method.
Impact of the Barents Sea SST in Autumn on the Winter Climate in Northeast China  [PDF]
Xiaomeng Shi, Yu Gu, Jilin Sun, Jingshu Dong, Min Geng
Journal of Geoscience and Environment Protection (GEP) , 2017, DOI: 10.4236/gep.2017.57009
Abstract: We studied effects of sea surface temperature anomaly (SSTA) in the Barents Sea in autumn on the atmospheric circulation in northeast China in winter, using the NCEP reanalysis data and sea surface temperature (SST) data of the Hadley Center. The results show that the ocean thermal conditions in the Barents Sea in autumn can be used as an important reference factor for predicting the cold air activity in China. When the sea surface temperature anomaly of the Barents Sea elevated in the autumn, the sea-level pressure anomaly elevated in eastern China on December, northeast China and southeastern Russia on January and February. In the years when the SSTA of the Barents Sea elevated in the autumn, the abnormal high-pressure ridge developed over Europe, and the geopotential height in western China appeared negative anomaly at 500 hPa. At 1000 hPa, the Mongolia high-pressure increased and the northerly airflow strengthened the cold high-latitude air broke out to the south, which was easy to affect northeast and north of China. In negative SSTA years, the high-pressure ridge was west to the north Atlantic, and the geopotential height in central and northern Siberia appeared negative anomaly at 500 hPa; the Mongolia high-pressure was weakened at 1000 hPa.
Uniqueness and Asymptotic Behavior of Positive Solutions for a Fractional-Order Integral Boundary Value Problem
Min Jia,Xin Liu,Xuemai Gu
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/294694
Abstract: We study a model arising from porous media, electromagnetic, and signal processing of wireless communication system ,  ,   ,   , where ,   and , is the standard Riemann-Liouville derivative, is linear functionals given by Riemann-Stieltjes integrals, is a function of bounded variation, and can be a changing-sign measure. The existence, uniqueness, and asymptotic behavior of positive solutions to the singular nonlocal integral boundary value problem for fractional differential equation are obtained. Our analysis relies on Schauder's fixed-point theorem and upper and lower solution method.
High-Speed Fluorescence Imaging and Intensity Profiling of Femtosecond-Induced Calcium Transients
Daniel Day,Charles G. Cranfield,Min Gu
International Journal of Biomedical Imaging , 2006, DOI: 10.1155/ijbi/2006/93438
Abstract: We have demonstrated a combined imaging system, where the physiology of biological specimens can be imaged and profiled at 10–20 frames per second whilst undergoing femtosecond laser irradiation. Individual GH3 cells labeled with the calcium fluorophore Fluo-3 were stimulated using a counter-propagating focused femtosecond beam with respect to the imaging system. As a result of the stimulation, calcium waves can be generated in COS cells, and laser-induced calcium oscillations are initiated in the GH3 cells. Single-photon fluorescence images and intensity profiles of the targeted specimens are sampled in real-time using a modified PerkinElmer UltraView LCI microscope.
Calculated Optical Properties of Dielectric Shell Coated Gold Nanorods

CAO Min,WANG Meng,GU Ning,

中国物理快报 , 2009,
Abstract: Optical absorption spectra of dielectric shell coated gold nanorods are simulated using the discrete dipole approximation method. The influence of the aspect ratio, shell thickness, dielectric constant of the shell, and surrounding medium on the longitudinal resonance mode is investigated. It is found that the coated dielectric shell does not affect the trend in the dependence of resonance position on the aspect ratio, while it broadens the resonant line width and reduces the sensitivity of plasmon resonance in response to changes of the surrounding medium. Furthermore, the difference of dielectric constants between the shell and surrounding medium plays an important role in determining the resonance position. The screening effect of the dielectric shell tends to be less apparent for a thicker shell thickness.
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