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Search Results: 1 - 10 of 169476 matches for " Wen-juan WANG "
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Ge Liu,Jianhui Wang,Liqin Guo,Wen-Juan Ruan
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808021922
Abstract: The title compound, C26H21N3O2, is an unsymmetrical tetradentate Schiff base ligand. The hydroxy group forms an intramolecular O—H...N hydrogen bond with an adjacent N atom. An intermolecular N—H...O hydrogen bond creates centrosymmetric dimers in the crystal packing.
Clinical observation of Yisui Shengxue Granule in treating 25 patients with hemoglobin H disease
Wen-juan WANG,Zhi-kui WU
Zhong Xi Yi Jie He Xue Bao , 2008,
Abstract: Objective: To investigate the clinical efficacy and safety of Yisui Shengxue Granule (YSSXG), a compound traditional Chinese herbal medicine for reinforcing kidney and nourishing blood, in treating hemoglobin H (HbH) disease.Methods: YSSXG was given orally to 25 patients with HbH disease in Guangxi Zhuang Autonomous Region (high incidence area for HbH disease in China) for 3 months as one therapeutic course, 3 times a day, 10 g YSSXG was given each time (dose of YSSXG for children should be reduced properly), and blood transfusion was not given to HbH patients during the course of treatment. The levels of hemoglobin (Hb), red blood cell (RBC), HbH and reticulocyte (Ret) were observed before and after YSSXG treatment, and side effects were observed during the course of treatment. Meanwhile, the genotype was examined, and the clinical efficacy of YSSXG in treating HbH patients with different genotype was evaluated.Results: The levels of Hb, RBC and Ret were obviously increased after YSSXG treatment from the first month to the end of treatment (P<0.01). After YSSXG treatment, the levels of Hb, RBC, Ret in 12 HbH patients with gene deletion were elevated (P<0.05, P<0.01), and the levels of Hb and Ret in 13 HbH patients with gene non-deletion were increased obviously (P<0.05, P<0.01). The total response rate was 84% after 3-month treatment, and there was no statistical difference in clinical efficacy between gene deletion HbH patients and non-deletion HbH patients. No adverse effect was observed during the course of treatment.Conclusion: YSSXG is effective and safe for treatment of HbH disease. YSSXG can improve the levels of Hb, RBC and Ret in HbH patients, especially in gene deletion HbH patients.
A family survey of syndromes of traditional Chinese medicine in patients with β-thalassemia
Wen-juan WANG,Zhi-kui WU
Zhong Xi Yi Jie He Xue Bao , 2009,
Abstract: Objective: To explore the relationship between syndromes of traditional Chinese medicine (TCM) and genetic background in patients with β-thalassemia.Methods: TCM syndromes were surveyed in the selected 78 patients with β-thalassemia intermedia including 120 parents. The gene mutations were detected separately. The frequency and score of TCM syndromes between the offspring and their parents in different family types were analyzed, and the differences were compared.Results: The 73 families were divided into two family types by hereditary characteristics. Family type one meant that genotypes of one of the parents were normal, while the offspring genotypes were heterozygous and were exactly the same as another parent. In the 22 families of type one, the heterozygous offspring manifested 6 high-frequency symptoms and signs such as spontaneous perspiration, dry mouth and dry throat, pale or sallow complexion, tidal fever and night sweating, lassitude and pale fingernails. The heterozygous parents manifested 5 high-frequency symptoms and signs such as lassitude in loins and knees, dizziness, aversion to cold and cold limbs, tinnitus, dry mouth and dry throat. The normal parents manifested 3 high-frequency symptoms and signs such as lassitude in loins and knees, dizziness, and spontaneous perspiration. TCM syndrome score in the heterozygous offspring was higher than that in the heterozygous and normal parents, but there was no significant difference (P>0.05). Family type two meant that genotypes of both parents were heterozygous, while the offspring genotypes were heterogenic duplex heterozygotes. In the 51 families of type two, the offspring manifested 9 high-frequency symptoms and signs such as pale or sallow complexion, spontaneous perspiration, dry mouth and dry throat, pale fingernails, tidal fever and night sweating, lassitude, frequent attack of common cold, dysphoria with feverish sensation in chest, and yellow discoloration of the skin and sclera. The parents manifested 3 high-frequency symptoms and signs such as lassitude in loins and knees, dizziness, aversion to cold and cold limbs. TCM syndrome score in the offspring was significant higher than that in the parents (P<0.01).Conclusion: In the two family types, TCM syndrome in the offspring is of yin-blood deficiency, while the syndrome of the parents is of kidney deficiency. The differences of TCM syndromes between the offspring and the parents may have some relations to the type of mutant genes and genetically modified ingredients. This research provides scientific evidence to TCM syndrome differen
A Case Study on the Experience Quality Evaluation of Virtual Tour
YANG Wen-juan,WANG Xin,HU Chuan-dong
Journal of Chongqing Normal University , 2012,
Abstract: Human society has stepped into the experience economy era which is after the service economy. With the development of technology and increase of tour demand, virtual tour has achieved preliminary development. In recent years, virtual tour draws much attention of domestic researchers, but current studies mainly focus on the explanations of the conception, characteristics, strengths and weaknesses. The study in deep on experience of virtual tour is reporting less. This paper studies the experience quality of virtual tour by using analytic hierarchy process to construct evaluation model, selecting 5 indicators, including convenience, novelty, richness,simulation and experience, and 16 evaluation factors. The results show that simulation influences the experience quality most,and its importance degree reaches 33. 3%, then followed by experience, novelty, richness and convenience, and their importance degrees are 25. 2%,17. 6%,13. 8% and 10. 1%.
The influence of a single defect in composite gate insulators on the performance of nanotube transistors
Wen-Juan Yu,Neng-Ping Wang
Physics , 2014, DOI: 10.1140/epjb/e2014-50443-3
Abstract: The current through a carbon nanotube field-effect transistor (CNFET) with cylindrical gate electrode is calculated using the nonequilibrium Greens function method in a tight-binding approximation. The obtained result is in good agreement with the experimental data. The space radiation and nuclear radiation are known to cause defects in solids. The theoretical approach is used to calculate the amplitude of the random-telegraph-signal (RTS) noise due to a single defect in the gate oxide of a long channel p-type CNFET. We investigate how the amplitude of the RTS noise is affected by the composite structure of gate insulators, which contains an inner insulator with a dielectric constant larger than 3.9 and an outer insulator with a dielectric constant of 3.9 (as for SiO2). It is found that the RTS amplitude increases apparently with the decreasing thickness of the inner gate insulator. If the inner insulator is too thin, even though its dielectric constant is as large as 80, the amplitude of the RTS noise caused by the charge of Q = +1e may amount to around 80% in the turn-on region. Due to strong effects of defects in CNFETs, CNFETs have a potential to be used for detecting the space radiation or nuclear radiation.
Xing-Han Wang,Wen-Juan Hao,Shu-Jiang Tu
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809001251
Abstract: In the molecule of the title compound, C20H25N3O3, the aromatic rings are oriented at a dihedral angle of 88.36 (3)°. The cyclohexane ring adopts a chair conformation. In the crystal structure, intermolecular N—H...O and O—H...N hydrogen bonds link the molecules. C—H...π interactions are also present.
Xing-Han Wang,Wen-Juan Hao,Shu-Jiang Tu
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809001391
Abstract: In the molecule of the title compound, C19H23N3O3, the six-membered rings are oriented at a dihedral angle of 73.06 (3)°. The cyclopentyl ring adopts an envelope conformation. In the crystal structure, intermolecular N—H...O and O—H...N hydrogen bonds link the molecules. In the tolyl ring, the H atoms and all but one of the C atoms are disordered over two positions and were refined with occupancies of 0.51 (3) and 0.49 (3).
Evolution of the bHLH Genes Involved in Stomatal Development: Implications for the Expansion of Developmental Complexity of Stomata in Land Plants
Jin-Hua Ran, Ting-Ting Shen, Wen-Juan Liu, Xiao-Quan Wang
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0078997
Abstract: Stomata play significant roles in plant evolution. A trio of closely related basic Helix-Loop-Helix (bHLH) subgroup Ia genes, SPCH, MUTE and FAMA, mediate sequential steps of stomatal development, and their functions may be conserved in land plants. However, the evolutionary history of the putative SPCH/MUTE/FAMA genes is still greatly controversial, especially the phylogenetic positions of the bHLH Ia members from basal land plants. To better understand the evolutionary pattern and functional diversity of the bHLH genes involved in stomatal development, we made a comprehensive evolutionary analysis of the homologous genes from 54 species representing the major lineages of green plants. The phylogenetic analysis indicated: (1) All bHLH Ia genes from the two basal land plants Physcomitrella and Selaginella were closely related to the FAMA genes of seed plants; and (2) the gymnosperm ‘SPCH’ genes were sister to a clade comprising the angiosperm SPCH and MUTE genes, while the FAMA genes of gymnosperms and angiosperms had a sister relationship. The revealed phylogenetic relationships are also supported by the distribution of gene structures and previous functional studies. Therefore, we deduce that the function of FAMA might be ancestral in the bHLH Ia subgroup. In addition, the gymnosperm “SPCH” genes may represent an ancestral state and have a dual function of SPCH and MUTE, two genes that could have originated from a duplication event in the common ancestor of angiosperms. Moreover, in angiosperms, SPCHs have experienced more duplications and harbor more copies than MUTEs and FAMAs, which, together with variation of the stomatal development in the entry division, implies that SPCH might have contributed greatly to the diversity of stomatal development. Based on the above, we proposed a model for the correlation between the evolution of stomatal development and the genes involved in this developmental process in land plants.
Plastic Constitutive Model and Analysis of Flow Stress of 40Cr Quenched and Tempered Steel
Wang Xiao-qiang,Zhu Wen-juan,Cui Feng-kui,Li Yu-xi
ISRN Mechanical Engineering , 2013, DOI: 10.1155/2013/490750
Abstract: To solve the problem of the accuracy of the numerical simulations of cold rolling, the thermomechanical responses of 40Cr under uniaxial compression loading are presented. The strain rates include quasistatic (0.004?s?1) at temperature of 293?K and dynamic loading regime (632?s?1~5160?s?1) at temperature regime (293?K~673?K). Significant strain rate and temperature sensitivity are measured. Based on these observations, the Johnson-Cook phenomenological constitutive model is proposed to predict the mechanical behavior of the 40Cr over wide ranges of strain rate and temperature. The solution process of the equation parameters is given. Correlations with this Johnson-Cook model are shown very close to the observed responses. Important material parameters are provided to the application of numerical analysis in project. 1. Introduction High-speed cold rolling is an advanced cold bulk metal forming technology. During the forming process, the workpiece is interruptedly struck by high-speed rolls, and plastic deformation of the workpiece is gradually achieved [1, 2]. 40Cr quenched and tempered steel is the main structure material used in high-speed cold rolling technology because of its good strength and ductility combination. During high-speed cold rolling forming, 40Cr quenched and tempered steel is subjected to high strain rates (about 900?s?1~4000?s?1) and large deformation. Numerical analysis is a critical tool for understanding the complex deformation mechanics that occur during cold rolling forming processes. Confidence in the numerical analysis of formability depends on the accuracy of the constitutive model describing the behavior of the material. Therefore, there is a good need to characterize 40Cr quenched and tempered steel’s dynamic responses and constitutive model when performing numerical analysis of high-speed cold rolling. A large number of researches have been carried out in understanding and modeling the mechanical behavior of metals under different strain rates and temperatures in both experimental and theoretical schemes. Thermomechanical responses of H13 hardened steel over a strain rate range from 103?s?1 to 104?s?1 and a temperature range of 293?K to 673?K was investigated by Lu and He [3]. In their study, the determination of the Johnson-Cook material parameters of H13 hardened steel was based on the experimental results. The Johnson-Cook (JC) constitutive model was shown to correlate and predict the observed responses reasonably well. The quasistatic (10?3?s?1~10?s?1) and dynamic responses (650?s?1~8500?s?1) at room temperature of
Tetraaqua(1,10-phenanthroline-5,6-dione-κ2N,N′)cobalt(II) dinitrate
Wen-Juan Shi
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809017826
Abstract: The asymmetric unit of the title compound, [Co(C12H6N2O2)(H2O)4](NO3)2, consists of a CoII complex cation with twofold rotational symmetry and two nitrate anions. The CoII atom has a distorted octahedral geometry with the basal plane occupied by two 1,10-phenanthroline-5,6-dione N atoms and two aqua O atoms, with the other two aqua ligands in axial positions. The aqua ligands are involved in extensive hydrogen bonding to nitrate and 1,10-phenanthroline-5,6-dione O atoms.
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