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Search Results: 1 - 10 of 150671 matches for " WANG Yuan-zhi "
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N′-(4-Methoxybenzylidene)-4-nitrobenzohydrazide methanol solvate
Yuan-Zhi Wang,Ming-Dong Wang,Yun-Peng Diao,Qian Cai
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808005813
Abstract: The title compound, C15H13N3O4·CH4O, was synthesized from the reaction of 4-methoxybenzaldehyde with 4-nitrobenzohydrazide in methanol. The benzene rings of the Schiff base molecule are nearly coplanar, making a dihedral angle of 7.0 (3)°. The methanol solvent molecules are linked to the Schiff base molecules by N—H...O, O—H...N and O—H...O hydrogen bonds, forming chains running parallel to the b axis.
Design of a Flow-through Polarographic Sensor Based on Metal Films for Determining N-nitrosodiethanolamine Levels in Rabbit Biological Fluids
Lai-Hao Wang,Hung-Chang Hsia,Yuan-Zhi Lan
Sensors , 2006, DOI: 10.3390/s6111555
Abstract: The construction and characterization of a flow-through polarographic detectorfor catalyzing the electroreduction of N-nitrosodiethanolamine (NDELA), is discussed. Theflow-through cell is equipped with a gold wire electrode (a thin mercury film deposited on agold substance). The response is evaluated with respect to substance diameter, length,concentration of modifying film, operating potential, supporting electrolyte and pH, andflow rate in the DC mode. The system allows the determination of N-nitrosodiethanolaminein rabbit biological fluids with relatively inexpensive equipment.
Effects of Parecoxib and Fentanyl on nociception-induced cortical activity
Yuan-Zhi Peng, Xiao-Xi Li, Ying-Wei Wang
Molecular Pain , 2010, DOI: 10.1186/1744-8069-6-3
Abstract: Peripheral nociceptive stimulation in anesthetized rats produced an immediate electroencephalogram (EEG) desynchronization resembling the cortical arousal (low-amplitude, fast-wave activity), while the membrane potential switched into a persistent depolarization state. The induced cortical activity was abolished by fentanyl, and the fentanyl's effect was reversed by the opioid receptor antagonist, naloxone. Parecoxib, on the other hand, did not significantly affect the neural activity.Cortical activity was modulated by nociceptive stimulation in anesthetized rats. Fentanyl showed a strong inhibitory effect on the nociceptive-stimulus induced cortical activity while parecoxib had no significant effect.Pain is a complex subjective sensory experience which is comprised of sensory discrimination, cognitive appreciation and affective motivation components [1]. The treatment of pain is a fundamental issue in the practice of anesthesia. However, the mechanisms of pain and analgesia are unclear. With the development of imaging technology (e.g., functional magnetic resonance imaging and positron emission tomography), cortical areas that are commonly activated by noxious stimuli have been illuminated. These areas include the primary and secondary somatosensory cortices (S1, S2), anterior cingulate cortex (ACC), insular cortex and motor cortex [2,3]. Electrophysiological studies show that cortical neuronal activity under anesthesia is associated with an Up-Down membrane potential fluctuation, while EEG signals are characterized by large-amplitude and slow-wave activity [4-6]. It is well known that synapses are highly plastic in the central nervous system including ACC, and that long-term changes in synaptic transmission contribute to different functions of brain including chronic pain. Long-term potentiation (LTP) is believed to the basis of learning and memory, and it can also be induced by different protocols or peripheral injury at the spinal cord dorsal horn [7,8]. Elucida
Research on Freeform Feature and Constraint Solving Feature-based Modeling

WANG Yuan-zhi,SUN Li-quan,JIANG Ke-qin,

中国图象图形学报 , 2006,
Abstract: The freeform feature modeling was introduced in HUST-CAID.Classification and parameters were defined combining with the HUST-CAID system(computer aided industry design system developed by Harbin university of science and technology);users could intuitively design any curved surface using a set of suitable parameters provided by the system without concerning the lower layer design.If users want to modify the parameters,the system will correspondingly provide feedback automatically.In order to obtain the right graphics agree with the constraint,it is provided a new novel prototype-driven constraint solving algorithm.The simulation result in HUST-CAID shows that this novel algorithm simplified constraint solving and feature modeling greatly.
True 3D imaging with monocular cues using holographic stereography
Yi-Ying Pu,Bing-Chu Chen,Yuan-Zhi Liu,Jian-Wen Dong,He-Zhou Wang
Physics , 2010, DOI: 10.1364/OL.35.003279
Abstract: A quantitative condition is derived to evaluate the monocular accommodation in holographic stereograms. We find that the reconstruction can be viewed as true-3D image when the whole scene is located in the monocular cues area, with compatible monocular cues and binocular cues. In contrast, it reveals incorrect monocular cues in the visible multi-imaging area and the lacking information area. To demonstrate our theoretical predictions, a pupil-function integral imaging algorithm is developed to simulate the mono-eye observation, and a holographic printing system is set up to fabricate the full-parallax holographic stereogram. Both simulation and experimental results match our theoretical predictions.
Spatiotemporal Noise Triggering Infiltrative Tumor Growth under Immune Surveillance
Wei-Rong Zhong,Yuan-Zhi Shao,Li Li,Feng-Hua Wang,Zhen-Hui He
Quantitative Biology , 2008, DOI: 10.1209/0295-5075/82/20003
Abstract: A spatiotemporal noise is assumed to reflect the environmental fluctuation in a spatially extended tumor system. We introduce firstly the structure factor to reveal the invasive tumor growth quantitatively. The homogenous environment can lead to an expansive growth of the tumor cells, while the inhomogenous environment underlies an infiltrative growth. The different responses of above two cases are separated by a characteristic critical intensity of the spatiotemporal noise. Theoretical and numerical results present a close annotation to the clinical images.
Watermarking algorithm based on Walsh transform

YUAN Zhan-ting,WANG Li-peng,JIN Yuan-zhi,

计算机应用研究 , 2010,
Abstract: Of all popular algorithms of transform domain, found most transformations to be orthogonal transformations (such as DCT and DWT). Selected Walsh transformation with excellent performance by studying Walsh function system. Finally, proposed a digital watermarking algorithm based on Walsh transformation. Experimental results show that the simple algorithm is good at perceptual transparency as well as robustness against noise and JPEG compression.
Deposition and characterization of TiZrV-Pd thin films by dc magnetron sputtering
Jie Wang,Bo Zhang,Yan-Hui Xu,Wei Wei,Le Fan,Xiang-Tao Pei,Yuan-Zhi Hong,Yong Wang
Physics , 2015,
Abstract: TiZrV film is mainly applied in the ultra-high vacuum pipe of storage ring. Thin film coatings of palladium which was added onto the TiZrV film to increase the service life of nonevaporable getters and enhance pumping speed for H2, was deposited on the inner face of stainless steel pipes by dc magnetron sputtering using argon gas as the sputtering gas. The TiZrV-Pd film properties were investigated by atomic force microscope (AFM), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and X-Ray Diffraction (XRD). The grain size of TiZrV and Pd film were about 0.42~1.3 nm and 8.5~18.25 nm respectively. It was found that the roughness of TiZrV films was small, about 2~4 nm, for Pd film it is large, about 17~19 nm. PP At. % of Pd in TiZrV/Pd films varied from 86.84 to 87.56 according to the XPS test results.

QING Qi-rong,HUANG Ping-hui,ZHOU Yuan-zhi,WANG Jia,

天然气地球科学 , 2005,
Abstract: There are two steps to calculate the important parameter of crack porosity in the crack reservoir. First step,we had better identity and find the high conductive crack by the formation of image logging. Secondly,we should conform the crack porosity which have been calculated in the nomal logging through using the formation of image logging. Although this paper did not have the data of the formation of image logging,taken the permian crack reservoir for example in the area of Bai 31 ,in the Kelamayi oil field,based on the single point crack porosity which have been analysed on the whole diameter sample,with the means of deep,light dual laterologging crack and compartmentalized the strata which riched in crack through using normal logging ,then conform the porosity parameter in crack explanation by single point crack porosity. At the last ,we can quantitatively acquire the crack porosity.
Comparative study on identity of B. ovis 019 strain by traditional methods and HOOF-prints technique

WANG Yuan-zhi,CHEN Chuang-fu,CUI Bu-yun,LIU Jian-xin,

微生物学报 , 2007,
Abstract: B.ovis 019 strain was identified by traditional methods and HOOF-Prints technique. Software DNAMAN was used to analyze phylogenetic tree for B.ovis 019 and reference strains of B. abortus 2308, B. melitensis 16M, B. suis 1330 and B. ovis 63/290. The results showed that the similarity between B.ovis 019 and B. ovis 63/290 was higher than that between B.ovis 019 and the other reference strains, which was in accordance with the results by conventional bacteriological methods. HOOF-Prints technique would be a promising method for identifying Brucella species and even biovars.
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