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Search Results: 1 - 10 of 114245 matches for " Han-ping Liu "
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Specificity of auricular acupoints in reflecting changes of qi and blood measured by diffuse reflectance spectroscopy
Han-ping Liu
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract: OBJECTIVE: This study aimed to assess the specificity of auricular acupoints in responding to changes of qi and blood which, in traditional Chinese medicine, are considered as the fundamental substances in the human body for sustaining normal vital activity.METHODS: A miniature fiber optic system was used to invasively measure the diffuse reflectance spectra of three auricular acupoints, namely, Uterus (TF2), Gan (CO12) and Neifenmi (CO18), at different stages of menstruation, when the female body exhibits regular changes of qi and blood. The spectra of different acupoints were compared to find their difference in responding changes of qi and blood, especially the reflectivity of absorption peaks of hemoglobin.RESULTS: The reflectivity of the same auricular acupoint during menstruation is higher than that before and after menstruation, and this trend is more obvious for the Uterus point compared with the points Gan and Neifenmi. The average reflectivity of the Uterus point during menstruation was significantly higher than that before or after menstruation (P<0.01). The D-values during and after menstruation of the Uterus point were greater than those of the points Gan and Neifenmi at 544.06 and 577.47 nm, respectively (P<0.05).CONCLUSION: The diffuse reflectance light of auricular acupoints changes as qi and blood fluctuates, and there is relative specificity among different auricular acupoints in reflecting changes of qi and blood. The Uterus point may be the most sensitive auricular acupoint in reflecting uterus function and subsequent changes of qi and blood.
Density Functional Based Tight Binding (DFTB) Study on the Thermal Evolution of Amorphous Carbon  [PDF]
Chung-Kiak Poh, Han-Ping D. Shieh
Graphene (Graphene) , 2016, DOI: 10.4236/graphene.2016.52006
Abstract: Density functional based tight binding (DFTB) model is employed to study the sp3-to-sp2 transformation of diamond-like carbon at elevated temperatures. The understanding could lead to the direct-growth of graphene on a wide variety of substrates.
A Chaotic Poly phase Pseudorandom Sequence

HU Han-Ping,LIU Shuang-Hong,WANG Zu-Xi,Wu Xiao-Gang,

数学物理学报(A辑) , 2004,
Abstract: A method based on Logistic map to generate poly-phase (2 n phases) sequence proposed in this paper. It gives the sufficient condition for this map to produce an independent and identically distributed (i.i.d) poly-phase pseudorandom (PN) sequence. The theoretical and numerical analyses show that the sequence also has a high complexity. It gives a fast algorithm to generate this sequence and general expression of the sequence in the paper too. The sequence can be used in fields such as information security and spread spectrum communication.
Heat transfer characteristics in fabrication of heat method in photonic crystal fiber grating

Qi Yue-Feng,Qiao Han-Ping,Bi Wei-Hong,Liu Yan-Yan,

物理学报 , 2011,
Abstract: The grating fabrication technology with heat method in photonic crystal fiber based on its structural change is researched. The principle of photonic crystal fiber grating is analyzed theor etically. Heat transfer theory and finite element method are both used to analyze the thermal field distribution in the fiber, as well as the influence of air hole structure in the cladding, and the parameters of laser beam in the process of grating fabrication are discussed. The research results show that the grating can be formed by the periodic air hole collapse in the cladding of photonic crystal fiber. Under double-point heating, the energy will be uniformly distributed in the radial direction and approximated by the Gaussian distribution in the axial direction. The collapsed air holes in the cladding accelerate the process of forming grating. In the same size of luminous spot, as the layers and the radii of air holes increase, the laser power for collapsing fiber decreases. Moreover, the relationship between laser power and air filling rate is obtained by stimulating the grating fabrication process in photonic crystal fiber with 1 to 7 layers of air holes. This kind of photonic crystal fiber grating can improve the thermal and long-term stability of conventional grating, and so it will have great potential applications in the relevant fields of optical fiber sensors.
Second-harmonic generation as a DNA malignancy indicator of prostate glandular epithelial cells

Zhuang Zheng-Fei,Liu Han-Ping,Guo Zhou-Yi,Zhuo Shuang-Mu,Yu Bi-Ying,Deng Xiao-Yuan,

中国物理 B , 2010,
Abstract: This paper first demonstrates second-harmonic generation (SHG) in the intact cell nucleus, which acts as an optical indicator of DNA malignancy in prostate glandular epithelial cells. Within a scanning region of $2.7~\mu$m$\times 2.7~\mu$m in cell nuclei, SHG signals produced from benign prostatic hyperplasia (BPH) and prostate carcinoma (PC) tissues (mouse model C57BL/6) have been investigated. Statistical analyses ($t$ test) of a total of 405 measurements (204 nuclei from BPH and 201 nuclei from PC) show that SHG signals from BPH and PC have a distinct difference ($p < 0.05)$, suggesting a potential optical method of revealing very early malignancy in prostate glandular epithelial cells based upon induced biochemical and/or biophysical modifications in DNA.
Cs+-K+ Exchange in Z-Cut KTiOPO4 Crystal Covered with Chromium Masking Layer

ZHANG Rui-Feng,LU Fei,LIAN Jie,LIU Han-Ping,LIU Xiang-Zhi,WANG Liang-Ling,WANG Ke-Ming,LU Qing-Ming,

中国物理快报 , 2008,
Abstract: Cs+--K+ ion exchanges are performed on z-cut KTiOPO4 crystals with chromium coating covered. The temperature of ion exchange is 430°C, and the time range from 15min to 30min. The dark mode spectra of the samples are measured by the prism coupling method. The channel structures on the samples are observed by a microscope and the near field pattern of the channel waveguides are measured by the end-fire coupling method. The refractive index of the samples increases and the increments at surface are modulated due to the existence of Cr film. In the region covered by Cr film, the refractive index of the samples at the surface increases dramatically in a shallow layer. The results of energy dispersive x-ray spectra indicate that in the region covered with Cr film, Cr ions participate in the ion exchange process, and enhance the refractive index. The results may provide a possibility that achieves index enhancement and Cr doping synchronically.
Propagation of Parallel Polarization Light in Single Axis Absorption Crystal

LIU Han-ping,LU Fei,WANG Xue-lin,ZHANG Rui-feng,LIU Xiang-zhi,

光子学报 , 2009,
Abstract: Based on the analyzing method of light propagation in the isotropic absorption media,wave normal vector propagation constant was introduced.The propagation laws of parallel polarization light in single axis absorption crystal were discussed.The representations of the some physical parameters,which are used to describe the medium properties and light propagation properties,such as wave normal refractive index,light refractive index,absorption coefficient,were derived.The relative formula of transparent crystal can be deduced from these parameters.By numeric calculating,it’s known that the reflection coefficients and transmission coefficients of parallel polarization light on the crystal surface derived from representation of vector propagation constant are same as those derived from method of complex refractive index.So the method of vector propagation constant to describe the propagation properties of light in absorption crystal is accurate and general.
Studies on the Adaptation of Five Legumes Species to Copper Tailings

TIAN Sheng-ni,LIU Deng-yi,PENG Shao-lin,SUN Qing-ye,XIA Han-ping,

环境科学 , 2004,
Abstract: Pot experiments with five legumes were conducted in five different amendment substrates for the reclamation of copper tailings in Tongling, Anhui province. The five tested legumes species are Glycine max, Phaseolus angularis, P.calcaratus, P.radiatus, P.mininus. The results showed that the main factors to restrict growing of the vegetation are poor nutrient and high concentration of Cu. The seeds of the legumes species could germinate, but they germinated later in the substrates with higher proportion of copper tailings than in the substrates with lower proportion of copper tailings. After clipping, G.max, P.angularis, P.calcaratus, P.radiatus were alive all the time, but some of the other two legumes species were dead because of the their non-adaptation to the copper tailings. At the same amendment group, the chlorophyll contents of G.max and P.calcaratus were higher than that of other three experimental species on the 50th day. The height and the biomass of G.max and P.calcaratus were higher than that of other three experimental species on the 70th day too. According to the biological characteristics of the five species during the growth periods about indexes of the seeding survival, chlorophyll content, height and biomass, G.max and P.calcaratus are more adaptive and tolerant than the other legumes and the TA75 amendment approach is the more reasonable for the reclamation of copper tailings.
Isolation and Characterization of Novel Microsatellite Markers for Yellow Perch (Perca flavescens)
Aibin Zhan,Yao Wang,Bonnie Brown,Han-Ping Wang
International Journal of Molecular Sciences , 2009, DOI: 10.3390/ijms10010018
Abstract: To perform whole genome scanning for complex trait analysis, we isolated and characterized a total of 21 novel genomic-SSRs and EST-SSRs for yellow perch (Perca flavescens), using the methods of construction of SSR-enrichment libraries and EST database mining of a related species P. fluviatilis. Of 16 genomic-SSR primer pairs examined, eight successfully amplified scorable products. The number of alleles at these informative loci varied from 3 - 14 with an average of 8.5 alleles per locus. When tested on wild perch from a population in Pennsylvania, observed and expected heterozygosities ranged from 0.07 - 0.81 and from 0.37 - 0.95, respectively. Of 2,226 EST sequences examined, only 110 (4.93%) contained microsatellites and for those, 13 markers were tested, 12 of which exhibited polymorphism. Compared with genomic-SSRs, EST-SSRs exhibited a lower level of genetic variability with the number of alleles of averaging only 2.6 alleles per locus. Cross-species utility indicated that three of the genomic-SSRs and eight of the EST-SSRs successfully cross-amplified in a related species, the walleye (Sander vitreus).
Ecological effectiveness of constructed wetlands in treating oil refined wastewater

XIA Han-Ping,

生态学报 , 2003,
Abstract: Wastewater produced from the oil refinery of the Maoming Petro-Chemical Company, China Petro-Chemical Corporation contains high concentrations of organic and inorganic pollutants, therefore it cannot be discharged directly into river or sea unless being treated first. Four plant species, Vetiveria zizanioides, Phragmites australis, Typha latifolia, and Lepironia articutala were planted in large containers as constructed vertical flow wetland to test their efficiencies in the purification of oil refined wastewater and their growth in wetlands soaked with oil refined wastewater. The results gotten from a 2-month treatment indicated that the purifying rates of constructed wetlands for oil refined wastewater were all very high at the beginning, which removed 97.7% of ammonia N, 78.2% of COD, 91.4% of BOD, and 95.3% of oil in the first batch of highly-concentrated wastewater (HCW), and 97.1% of ammonia N, 71.5% of COD, 73.7% of BOD, and 89.8% of oil in the first batch of low-concentrated wastewater (LCW). But the performance of wetlands was decreased and became basically stable as time passed. The efficiency of wetlands in removing the pollutants was always in order of ammonia N > oil > BOD > COD, but the net removal of plants to them was ranked as COD > BOD > oil and ammonia N. In the beginning, the purifying function of plants was quite weak, but it gradually increased with the acceleration of plants growth. However, there was almost no significant difference in the removal efficiencies among the four species. The four tested species produced better growth in wetlands with HCW or LCW than with clean water, but V. zizanioides, P. australis, T. latifolia produced fewer tillers in HCW than those in LCW, while this was contrary to L. articutala. This inferred that HCW might damage the first three species, and promote the growth of L. articutala. During the period of clean water cultivation, the new tiller producing rate of V. zizanioides was the lowest among the four species, but it gradually rose during the period of treatment water soak, while the tiller-producing rates of the other three species were distinctly lowered. It was therefore suggested that V. zizanioides might have a stronger adaptation to the harsh environment than other species tested in the experiment, especially in the situation of long time of adaptation to the environment. However, the above results remains to be further verified due to the limited observation time of only two months.
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