Search results for: Guo-yan Zhao

Items from 1 to 20 out of 20 results

article

An Efficient Adaptive Central-Upwind WENO-CU6 Numerical Scheme with a New Sensor

Guo-Yan Zhao, Ming-Bo Sun, Yong Mei, Liang Li, more

Journal of Scientific Computing > 2019 > 81 > 2 > 649-670

We present a novel efficient adaptive central-upwind WENO-CU6 scheme (named as EWENO-CU6) to maximize the order of accuracy, minimize dissipation and improve numerical robustness. Unlike WENO-CU6 scheme, the present paper introduces a switch formula based on our new shock sensor to adaptively diminish numerical dissipation in a rational manner when departing from discontinuities. Based on the above...

article

Nucleic Acid Vaccine Targeting Nogo-66 Receptor and Paired Immunoglobulin-Like Receptor B as an Immunotherapy Strategy for Spinal Cord Injury in Rats

Xiu-Min Lu, Min Mao, Lan Xiao, Ying Yu, more

Neurotherapeutics > 2019 > 16 > 2 > 381-393

Nogo-66 receptor (NgR) and paired immunoglobulin-like receptor B (PirB) are two common receptors of various myelin-associated inhibitors (MAIs) and, thus, play an important role in MAIs-induced inhibitory signalling of regeneration following spinal cord injury (SCI). Based on the concept of protective autoimmunity, vaccine approaches could induce the production of antibodies against inhibitors in...

article

Performance assessment of circular economy for phosphorus chemical firms based on VIKOR-QUALIFLEX method

Wei-zhang Liang, Guo-yan Zhao, Chang-shou Hong

Journal of Cleaner Production > 2018 > 196 > C > 1365-1378

Confronting the dilemma of resource shortage and environmental pollution, the idea of circular economy (CE) has attracted widespread attentions. To address these problems, several industrial companies have incorporated the CE in their operation or design. In this sense, the phosphorus chemical firms (PCFs) are promoting CE to achieve sustainable development goals since phosphorus is a non-renewable...

article

Experimental investigation on damage evolution behaviour of a granitic rock under loading and unloading

Bing Dai, Guo-yan Zhao, H. Konietzky, P. L. P. Wasantha

Journal of Central South University > 2018 > 25 > 5 > 1213-1225

In-situ rock failures can result from stress changes due to pure loading and/or unloading. Understanding of the damage evolution behavior in brittle rocks during loading and unloading is imperative for the designs of rock structures. In this paper, we investigate the damage evolution characteristics of a granitic rock during loading and unloading after a series of triaxial experiments performed at...

article

Nicotine enhances GABAergic inhibition of oxytocin mRNA-expressing neuron in the hypothalamic paraventricular nucleus in vitro in rats

Ke-Min Zhang, Guo-Yan Zhao, Bin-Bin Zhang, Qi Xu, more

Neuroscience Letters > 2017 > 638 > C > 5-11

We recently found that extracellular administration of nicotine indirectly excited hypothalamic paraventricular nucleus (PVN) corticotropin-releasing hormone (CRH) mRNA-expressing neurons. In this study, we studied the effect of nicotine on PVN oxytocin (OT) mRNA-expressing neuron in vitro in rats, by whole-cell patch-clamp recording technique, immunohistochemistry methods and single-cell reverse-transcription...

article

A conceptual design of shock-eliminating clover combustor for large scale scramjet engine

Ming-bo Sun, Yu-xin Zhao, Guo-yan Zhao, Yuan Liu

Acta Astronautica > 2017 > 130 > C > 34-42

A new concept of shock-eliminating clover combustor is proposed for large scale scramjet engine to fulfill the requirements of fuel penetration, total pressure recovery and cooling. To generate the circular-to-clover transition shape of the combustor, the streamline tracing technique is used based on an axisymmetric expansion parent flowfield calculated using the method of characteristics. The combustor...

article

Classification of mine blasts and microseismic events using starting-up features in seismograms

Guo-yan ZHAO, Ju MA, Long-jun DONG, Xi-bing LI, more

Transactions of Nonferrous Metals Society of China > 2015 > 25 > 10 > 3410-3420

To find discriminating features in seismograms for the classification of mine seismic events, signal databases of blasts and microseismic events were established based on manual identification. Criteria including the repetition of waveforms, tail decreasing, dominant frequency and occurrence time of day were considered in the establishment of the databases. Signals from databases of different types...

article

Energy conversion of rocks in process of unloading confining pressure under different unloading paths

Guo-yan ZHAO, Bing DAI, Long-jun DONG, Chen YANG

Transactions of Nonferrous Metals Society of China > 2015 > 25 > 5 > 1626-1632

Based on energy theory and tests of rocks with initial confining pressures of 10, 20 and 30 MPa under different unloading paths, the processes of strain energy conversion were investigated. The absorbing strain energy for axial compression, the dissipating strain energy for plastic deformation and cracks propagation, the expending strain energy for circumferential deformation, and the storing and...

article

Properties of 4 Hz stimulation‐induced parallel fiber–Purkinje cell presynaptic long‐term plasticity in mouse cerebellar cortex in vivo

Chun‐Ping Chu, Guo‐Yan Zhao, Ri Jin, Sheng‐Nan Zhao, more

European Journal of Neuroscience > 39 > 10 > 1624 - 1631

Cerebellar parallel fiber–Purkinje cell (PF–PC) long‐term synaptic plasticity is important for the formation and stability of cerebellar neuronal circuits, and provides substrates for motor learning and memory. We previously reported both presynaptic long‐term potentiation (LTP) and long‐term depression (LTD) in cerebellar PF–PC synapses in vitro. However, the expression and mechanisms of cerebellar...

article

N-methyl-d-aspartate inhibits cerebellar Purkinje cell activity via the excitation of molecular layer interneurons under in vivo conditions in mice

Heng Liu, Sheng-Nan Zhao, Guo-Yan Zhao, Lei Sun, more

Brain Research > 2014 > 1560 > Complete > 1-9

N-methyl-d-aspartate (NMDA) receptors play a key role in synaptic transmission, and are widely expressed on the membrane of granule cells, parallel fibers, and molecular layer interneurons (MLIs) in the cerebellar cortex of mammals. In cerebellar slices, activation of NMDA receptors increases inhibitory postsynaptic currents (IPSCs) of Purkinje cells (PCs). However, the effects of NMDA on the cerebellar...

article

Structural and mechanistic insights into collagen degradation by a bacterial collagenolytic serine protease in the subtilisin family

Li‐Yuan Ran, Hai‐Nan Su, Guo‐Yan Zhao, Xiang Gao, more

Molecular Microbiology > 90 > 5 > 997 - 1010

A number of proteases in the subtilisin family derived from environmental or pathogenic microorganisms have been reported to be collagenolytic serine proteases. However, their collagen degradation mechanisms remain unclear. Here, the degradation mechanism of type I collagen fibres by the S8 collagenolytic protease MCP‐01, from Pseudoalteromonas sp. SM9913, was studied. Atomic force microscopy observation...

article

A sensitive and selective nitrite sensor based on a glassy carbon electrode modified with gold nanoparticles and sulfonated graphene

Su-Juan Li, Guo-Yan Zhao, Rong-Xia Zhang, Ya-Li Hou, more

Microchimica Acta > 2013 > 180 > 9-10 > 821-827

We describe a highly sensitive and selective amperometric sensor for the determination of nitrite. A glassy carbon electrode was modified with a composite made from gold nanoparticles (AuNPs) and sulfonated graphene (SG). The modified electrode displays excellent electrocatalytic activity in terms of nitrite oxidation by giving much higher peak currents (at even lower oxidation overpotential) than...

article

Tenderization effect of cold-adapted collagenolytic protease MCP-01 on beef meat at low temperature and its mechanism

Guo-Yan Zhao, Ming-Yang Zhou, Hui-Lin Zhao, Xiu-Lan Chen, more

Food Chemistry > 2012 > 134 > 4 > 1738-1744

The enzymes currently used to increase meat tenderness are all mesophilic or thermophilic proteases. This study provides insight into the tenderization effect and the mechanism of a cold-adapted collagenolytic enzyme MCP-01 on beef meat at low temperatures. MCP-01 (10U of caseinolytic activity) reduced the meat shear force by 23% and increased the relative myofibrillar fragmentation index of the meat...

article

Safe mining technology of undersea metal mine

Kang PENG, Xi-bing LI, Chuan-chuan WAN, Shu-quan PENG, more

Transactions of Nonferrous Metals Society of China > 2012 > 22 > 3 > 740-746

Xinli district of Sanshandao Gold Mine is the first subsea metal mine in China. To achieve 6 kt/d production capacity under the premise of safe mining, high-intensity mining might destroy the in-situ stress filed and the stability of rockmass. According to sampling and testing of ore-rock and backfill and in-situ stress field measurement, safety factor method calculation model based on stress—strain...

article

Determination of ofloxacin and gatifloxacin by mixed micelle-mediated cloud point extraction-fluorimetry combined methodology

Hao Wu, Guo-yan Zhao, Li-ming Du

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2010 > 75 > 5 > 1624-1628

A cloud point extraction process using mixed micelle of the anionic surfactant sodium dodecyl sulfate (SDS) and the non-ionic surfactant polyoxyethylene(7.5)nonylphenylether (PONPE 7.5) to extract two fluoroquinolone antimicrobial agents, ofloxacin and gatifloxacin, from aqueous media was investigated. The method is based on the mixed micelle-mediated extraction of fluoroquinolones in the presence...

article

Study on the inclusion interaction of methylated-β-cyclodextrins with albendazole by spectrofluorimetry and its application

Guo Yan Zhao, Hao Wu, Sheng Li Dong, Li Ming Du

Chinese Chemical Letters > 2008 > 19 > 8 > 951-954

The inclusion interaction between three types of methylated-β-cyclodextrins (Me-β-CDs) and albendazole (ABZ) was studied by spectrofluorimetry. The result showed that Me-β-CDs reacted with ABZ to form an inclusion complex, 1:1 stoichiometry for Me-β-CDs−ABZ complex was established and its association constant have been determined from fluorescence data by Benesi-Hildebrand's method (double reciprocal...

article

3D cavity detection technique and its application based on cavity auto scanning laser system

Xi-ling Liu, Xi-bing Li, Fa-ben Li, Guo-yan Zhao, more

Journal of Central South University of Technology > 2008 > 15 > 2 > 285-288

Ground constructions and mines are severely threatened by underground cavities especially those unsafe or inaccessible ones. Safe and precise cavity detection is vital for reasonable cavity evaluation and disposal. The conventional cavity detection methods and their limitation were analyzed. Those methods cannot form 3D model of underground cavity which is used for instructing the cavity disposal;...

article

Chaotic time series prediction for surrounding rock’s deformation of deep mine lanes in soft rock

Xi-bing Li, Qi-sheng Wang, Jin-rui Yao, Guo-yan Zhao

Journal of Central South University of Technology > 2008 > 15 > 2 > 224-229

Based on the measured displacements, the change laws of the effect of distance in phase space on the deformation of mine lane were analyzed and the chaotic time series model to predict the surrounding rocks deformation of deep mine lane in soft rock by nonlinear theory and methods was established. The chaotic attractor dimension(D) and the largest Lyapunov index(E_max) were put forward to determine...

article

Experiment on mechanical properties of steel fiber reinforced concrete and application in deep underground engineering

Qi-sheng WANG, Xi-bing LI, Guo-yan ZhAO, Peng SHAO, more

Journal of China University of Mining and Technology > 2008 > 18 > 1 > 64-66,81

Specimens of steel fiber reinforced concrete (SFRC) in volume ratios of 0%, 0.5%, 1% and 1.5% were prepared to study the supporting effect of SFRC at these different volume ratios in a deep soft rock tunnel. Experiments with mechanical properties of compressive strength in cubic specimens, cleave strength in cylindrical specimens and four-point flexure strength of sheet metal specimens were carried...

article

Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine

Jian Deng, Li Bian, Xi-bing Li, Guo-yan Zhao, more

Journal of Central South University of Technology > 2006 > 13 > 6 > 733-737

Ground crack and subsidence were investigated in Kaiyang Phosphorus Mine as an example. Contribution factors to cause ground crack and mining subsidence were studied, including mining method, mining depth and ore thickness and stope size, dip angle of orebody, geological structure, nature of overburden and water contents, and roof supports, etc. Countermeasures against cracks and subsidence were put...

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