Yong Wang

Jiangsu Normal University, Hsü-chuang, Shaanxi, China

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Publications (462)2074.96 Total impact

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    ABSTRACT: Selective swelling of amphiphilic block copolymers (BCPs) is an effective and nondestructive pore-making strategy. Here we coupled swelling-induced pore generation with UV crosslinking to fabricate BCP isoporous membranes with gradient porosity. Polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) solutions were coated onto macroporous supporting membranes to achieve composite films, which were then annealed in solvent vapor for the perpendicular alignment of the P2VP phases near the surface of the coating BCP layer. After swelling of BCP in hot ethanol and drying, isopores of ~8 nm formed at the surface of BCP layer following the selective swelling-induced pore-formation mechanism. Then UV exposure and subsequent secondary swelling at stronger condition of the membranes were conducted to enlarge the inner pores while maintaining the surface structures. With balanced UV crosslinking and secondary swelling, the finally obtained membranes showed ordered perpendicular pores at the outmost layer and gradient porosity with enlarged interconnected pores inside the BCP layer. Due to the gradient structures, the membranes exhibited much higher flux while the surface structures and retention remained essentially unchanged. Moreover, compared to the membranes without UV treatment, the membranes showed better performances in discriminating polyethylene glycol molecules with different molecular weights and still kept a sensitive pH-responsive property.
    Journal of Membrane Science 02/2015; 476. · 4.91 Impact Factor
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    ABSTRACT: Abstract Ir nanocatalyst Ir@CN was prepared by pyrolysis of the IrCl3 complex with 1,10-phenanthroline in the activated carbon. The iridium nanocatalyst Ir@CN was highly selective for the transfer hydrogenation of aldehydes and ketones including benzaldehyde derivatives, and the hydrogenative alkylation of C=O bonds was suppressed effectively. The iridium nanocatalyst Ir@CN is a heterogeneous catalyst and can be reused several times for the transfer hydrogenation of aldehydes and ketones. Graphical Abstract Ir nanocatalyst Ir@CN was prepared and the Ir@CN was found to be highly selective for the transfer hydrogenation of ketones and aldehydes including benzaldehyde derivatives in water. The iridium nanocatalyst Ir@CN is a heterogeneous catalyst and can be reused several times.
    Catalysis Letters 01/2015; · 2.29 Impact Factor
  • Fan Yang, Yong Wang, Zhulong Chan
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    ABSTRACT: We reviewed the current ecological and environmental conditions within the water level fluctuation zone (WLFZ) of the Three Gorges Reservoir (TGR).The WLFZ encountered several eco-environmental problems, including the loss of biodiversity, soil erosion, challenges for land use, non-point-source pollution, nutrient accumulation, and heavy metal pollution, which seriously affected the ecological integrity and water quality of the TGR. Our review revealed that vegetation restoration of the WLFZ may be an ideal system response to cope with the eco-environmental problems of the WLFZ. Further, riparian vegetation had potential in reducing soil erosion, preventing nutrient accumulation, and adsorbing heavy metal pollutants in the WLFZ. We also described remedial riparian vegetation engineering in the TGR WLFZ—both past and potential. Vegetation engineering will be critical for improving the eco-environmental conditions in the WLFZ, and for maintaining ecological integrity of the TGR. We provided recommendations for on-going remedial actions in the TGR WLFZ.
    Aquatic Ecosystem Health and Management 01/2015; · 1.00 Impact Factor
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    ABSTRACT: We numerically study the vector dynamics of dissipative solitons (DSs) in a 2 μm dispersion-managed fiber laser mode locked by a semiconductor saturable absorber mirror and operated in the normal dispersion regime. It is shown that the effective gain bandwidth is crucial for the DS generation. The steep spectral edges of DSs are the consequence of the interaction among the normal dispersion, fiber nonlinearity, gain and loss, and gain dispersion effect, etc. We numerically duplicate the experimental results and further explore the vector features of the generated DSs. Two DSs formed along the two orthogonal polarization directions which, incoherently coupled with each other, could propagate in the birefringent cavity with the same group velocity.
    Applied Optics 12/2014; 53(35). · 1.69 Impact Factor
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    ABSTRACT: Encompassing ecological and economic concerns, the utilization of biomass to produce carbonaceous materials has attracted intensive research and industrial interest. Using nitrogen containing precursors could realize an in situ and homogeneous incorporation of nitrogen into the carbonaceous materials with a controlled process. Herein, N-doped hollow core-disordered mesoporous shell carbonaceous nanospheres (HCDMSs) were synthesized from glucosamine hydrochloride (GAH), an applicable carbohydrate-based derivative. The obtained HCDMSs possessed controlled size (∼450-50 nm) and shell thickness (∼70-10 nm), suitable nitrogen contents (∼6.7-4.4 wt.%), and Brunauer-Emmett-Teller (BET) surface areas up to 770 m2·g−1. These materials show excellent electrocatalytic activity as a metal-free catalyst for the oxygen reduction reaction (ORR) in both alkaline and acidic media. Specifically, the prepared HCDMS-1 exhibits a high diffusion-limited current, and superior durability and better immunity towards methanol crossover and CO poisoning for ORR in alkaline solution than a commercial 20 wt.% Pt/C catalyst.
    Nano Research 12/2014; · 6.96 Impact Factor
  • Catalysis Today 12/2014; 238:103–110. · 3.31 Impact Factor
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    ABSTRACT: A modified three-dimensional (3-D) plane-wave model is developed to analyze the laser performance and temperature distribution in an end-pumped Tm:YAG slab laser. A numerical iterative method is used to calculate the stable distributions of laser intensity and temperature. This three-dimensional model provides a more practical method than traditional 2-D model to analyze laser systems with non-uniform temperature distribution. Experiments using Tm:YAG ceramic slabs are carried out to examine the influence of coolant fluid temperature on laser output. The experimentally acquired data are found to be in reasonable agreement with the theoretical predictions.
    Optics Communications 12/2014; 332:332–338. · 1.54 Impact Factor
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    ABSTRACT: A perylene-based probe was developed for uridine diphosphate (UDP) sensing and cell imaging. The probe presented about 4-fold fluorescence enhancement in the presence or absence of 100equiv UDP. The selectivity toward UDP over other phosphor-containing anions was observed. The selective UDP sensing was speculated to be related to the binding affinities of Zn(2+) ions in sensor with the uridine and phosphate moieties of UDP. Furthermore, this probe was also applied to image of UDP in living cells. Copyright © 2014 Elsevier Ltd. All rights reserved.
    Bioorganic & Medicinal Chemistry Letters 11/2014; · 2.33 Impact Factor
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    14 AIChE Annual Meeting; 11/2014
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    ABSTRACT: We performed a direct observation of a crystal facet-dependent oxidation of graphene layers on platinum nanocrystals at atomic resolution in an environmental transmission electron microscope. Combined with density functional theory calculations, our work provides a novel approach for the dynamical exploration of the facet-dependent reactions at the atomic level.
    Chemical Communications 11/2014; · 6.72 Impact Factor
  • Catalysis Today 11/2014; 237:89–99. · 3.31 Impact Factor
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    ABSTRACT: Surfaces functionalized with affinity ligands have been widely studied for applications such as biological separations and cell regulation. While individual ligands can be directly conjugated onto a surface, it is often important to conjugate polyvalent ligands onto the surface to enhance ligand display. This study was aimed at exploring a method for surface functionalization via polymerization of affinity ligands, which was achieved through ligand hybridization with DNA polymers protruding from the surface. The surface with polyvalent ligands was evaluated via aptamer-mediated cell binding. The results show that this surface bound target cells more effectively than a surface directly functionalized with individual ligands in situations with either equal amounts of ligand display or equal amounts of surface reaction sites. Therefore, this study has demonstrated a new strategy for surface functionalization to enhance ligand display and cell binding. This strategy may find broad applications in settings where surface area is limited or the surface of a material does not possess sufficient reaction sites.
    Biomacromolecules 10/2014; · 5.79 Impact Factor
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    ABSTRACT: Oils and organic solvents that leak into water bodies must be promptly removed to avoid ecological disasters, e. g. by selective absorption using oleophilic absorbents. However, it remains a challenge for the low-cost synthesis of efficient and recyclable absorbents for oily pollutants. By surface functionalization to inexpensive polyurethane (PU) foams, we synthesize oil absorbents exhibiting the highest absorption capacity and the best recyclability among all polymeric absorbents. The synthesis is enabled by atomic layer deposition of ~5-nm-thick Al2O3 transition layer onto the skeleton surface of PU foams, followed by coupling a single-molecule layer of silanes to the Al2O3 layer. The sub-10-nm functionalization layer provides the PU foam an outstanding water-repelling and oil-absorbing functionality without compromising its high porosity and elasticity. The functionalized foam is able to quickly absorb oily pollutants spread on water surfaces or precipitated in water with a capacity more than 100 times its own weight. This ultrathin-layer-functionalization method is also applicable to renewable porous biomaterials, providing a sustainable solution for oil spills. Moreover, we propose devices than can continuously operate to efficiently collect oil spills from water surfaces based on the functionalized PU foam developed in this work.
    ACS Applied Materials & Interfaces 10/2014; · 5.90 Impact Factor
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    ABSTRACT: We report on an acousto-optic Q-switched 1645 nm Er:YAG ceramic laser resonantly pumped by using an Er,Yb fiber laser at 1532 nm. Maximum continuous wave output powers of 2.1 W and 2.4 W were obtained for 10% and 20% transmission OCs under 10.5 W of incident pump power, respectively. In Q-switched mode, the laser produced pulses with ~3.7 mJ energy and 82 ns width at 200 Hz repetition rate for 20% transmission OC under 8.6 W of incident pump power, corresponding to a peak power of ~45 kW.
    Optics Express 10/2014; 22(20). · 3.53 Impact Factor
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    Fan Yang, Yong Wang, Zhulong Chan
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    ABSTRACT: The establishment of riparian protection forests in the Three Gorges Reservoir (TGR) is an ideal measure to cope with the eco-environmental problems of the water-level fluctuation zone (WLFZ). Thus, the information for screening winter-flood-tolerant woody plant species is useful for the recovery and re-establishment of the riparian protection forests in the TGR WLFZ. Therefore, we discussed the possibilities of constructing and popularizing riparian protection forests in the TGR WLFZ from several aspects, including the woody plant species distribution in the WLFZ, the survival rate analyses of suitable candidate woody species under controlled flooding conditions, the survival rate investigation of some woody plant species planted in the TGR WLFZ, and the physiological responses of some woody plant species during the recovery stage after winter floods. The results of woody species investigation showed that most woody plant species that existed as annual seedlings in the TGR WLFZ are not suitable candidates for the riparian protection forests. However, arbor species (e.g., Salix matsudana, Populus×canadensis, Morus alba, Pterocarya stenoptera, Taxodium ascendens, and Metasequoia glyptostroboides) and shrub species (e.g., Salix variegata, Distylium chinensis, Lycium chinense, Myricaria laxiflora, and Rosa multiflora) might be considered suitable candidates for the riparian protection forests in the TGR WLFZ by survival rate analyses under controlled winter flooding conditions, and survival rate investigations of woody plant species planted in the TGR WLFZ, respectively. Physiological analyses showed that P.×canadensis, M. alba, L. chinense, and S. variegata could develop specific self-repairing mechanisms to stimulate biomass accumulation and carbohydrate synthesis via the increases in chlorophyll pigments and photosynthesis during recovery after winter floods. Our results suggested these woody plant species could endure the winter flooding stress and recover well, and be used as candidate for the construction of riparian protection forests in the TGR WLFZ.
    PLoS ONE 10/2014; · 3.53 Impact Factor
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    ABSTRACT: Rodent pests severely damage agricultural crops. Outbreak risk models of rodent pests often do not include sufficient information regarding geographic variation. Habitat plays an important role in rodent-pest outbreak risk, and more information about the relationship between habitat and crop protection is urgently needed. The goal of the present study was to provide an outbreak risk map for the Dongting Lake region and to understand the relationship between rodent-pest outbreak variation and habitat distribution. The main rodent pests in the Dongting Lake region are Yangtze voles (Microtus fortis, Buchner, 1889). These pests cause massive damage in outbreak years, most notably in 2007. Habitat evaluation and ecological details were obtained by analyzing the correlation between habitat suitability and outbreak risk, as indicated by population density and historical events. For the source-sink population, 96.18% Yangtze vole disaster regions were covered by a 10-km buffer zone of suitable habitat in 2007. Historical outbreak frequency and peak population density were significantly correlated with the proportion of land covered by suitable habitat (r = 0.68, p = 0.04 and r = 0.76, p = 0.03, respectively). The Yangtze vole population tends to migrate about 10 km in outbreak years. Here, we propose a practical method for habitat evaluation that can be used to create integrated pest management plans for rodent pests when combined with basic information on the biology, ecology, and behavior of the target species.This article is protected by copyright. All rights reserved
    Integrative Zoology 10/2014; · 1.42 Impact Factor
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    ABSTRACT: A novel reduction and pH dual-sensitive nonviral vector for long-circulating and tumor-targeted siRNA delivery is described. The nanomedicine is negatively charged at neutral pH of bloodstream whereas positively charged at lower pH of tumor tissue (ca. 6.8). Interlayer crosslinking with disulfide bonds stabilizes the nanomedicine during blood circulation and allows quick intracellular siRNA release after endocytosis.
    Advanced Materials 10/2014; · 15.41 Impact Factor
  • Catalysis Communications 10/2014; 55:34–37. · 3.32 Impact Factor
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    ABSTRACT: Abstract Objectives: To investigate the association between serum uric acid and mortality in a Chinese population of hypertensive patients. Methods and results: A total of 2757 Chinese hypertensive patients from department of cardiology of several hospitals in Shanghai in China were followed up for about six years in this prospective study. Mortality was recorded and related factors were evaluated. Hyperuricemia was diagnosed by serum uric acid levels of >420 µmol/L in males or >357 µmol/L in females. A total of 2585 hypertensive patients with complete data were included in the final statistical analysis. Totally 709 deaths (27.4%) occurred during the six-year follow-up, of which 475 deaths were attributable to cardiovascular disease (CVD). All-cause and CVD mortality of hypertensive patients with hyperuricemia was significantly higher than that of patients without hyperuricemia. The Cox regression analysis indicated that hazards ratios (HRs) of hyperuricemia for all-cause and CVD mortality were 1.206 (95% CI: 1.002-1.453) and 1.085 (95% CI: 1.002-1.271) respectively. All-cause and CVD mortality of hypertensive patients was significantly increased (both p < 0.05) when uric acid levels increased. HRs of uric acid levels >536 µmol/L to all-cause and CVD mortality of hypertensive patients were 2.115 (95% CI: 1.596-2.801) and 1.861 (95% CI: 1.296-2.673), respectively, compared with those of uric acid levels ≤357 µmol/L. Conclusions: The data from this cohort study indicate that hyperuricemia can predict increased all-cause and CVD mortality in hypertensive patients.
    Renal Failure 09/2014; · 0.78 Impact Factor
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    ABSTRACT: Fabrication of hierarchically porous carbon materials (HPCs) with high surface area and pore volume has always been pursued. However, the currently effective template methods and acid/base activation strategies suffer from the drawbacks of either high costs or tedious steps. Herein, HPCs with 3D macro-mesopores and short-range meso-micropores were fabricated via an easy and sustainable two-step method from biomass. Macro-mesopores were constructed by slightly accumulation/aggregation of carbon spheres ranging from 60 nm to 80 nm, providing efficient mass diffusion pathways. Short-range mesopores and micropores with high electrolyte accessibility were developed in these spheres by air activation. The obtained HPCs showed surface area values up to 1306 m(2)/g and high mesopore volume proportion (63.9%). They demonstrated excellent capacitance and low equivalent series resistance (ESR) as supercapacitor electrode materials, suggesting the efficient diffusion and adsorption of electrolyte ions in the designed hierarchically porous structure.
    Scientific Reports 09/2014; 4:6349. · 5.08 Impact Factor

Publication Stats

4k Citations
2,074.96 Total Impact Points

Institutions

  • 2014
    • Jiangsu Normal University
      Hsü-chuang, Shaanxi, China
    • Ruijin Hospital North
      Shanghai, Shanghai Shi, China
  • 2013–2014
    • Pennsylvania State University
      • Department of Bioengineering
      University Park, Maryland, United States
  • 2011–2014
    • Sun Yat-Sen University
      • • Department of Chemical Engineering
      • • State Key Laboratory of Biocontrol
      Shengcheng, Guangdong, China
    • Fudan University
      • Department of Optical Science and Engineering
      Shanghai, Shanghai Shi, China
    • Qufu Normal University
      Küfow, Shandong Sheng, China
    • University of Science and Technology of China
      Luchow, Anhui Sheng, China
    • IBM
      Armonk, New York, United States
  • 2010–2014
    • Nanjing University of Technology
      Nan-ching, Jiangsu Sheng, China
    • Hefei Institute of Physical Sciences, Chinese Academy of Sciences
      Luchow, Anhui Sheng, China
    • Zhangzhou Normal University
      Lunki, Fujian, China
    • East China Institute of Technology
      Yangkü, Shanxi Sheng, China
  • 2008–2014
    • Capital Medical University
      • Department of Physiology
      Peping, Beijing, China
    • East Carolina University
      • Department of Geography
      North Carolina, United States
  • 2004–2014
    • Zhejiang University
      • Department of Chemistry
      Hang-hsien, Zhejiang Sheng, China
    • Sichuan University
      • College of Life Sciences
      Chengdu, Sichuan Sheng, China
  • 2001–2014
    • Pacific Northwest National Laboratory
      • Environmental Molecular Sciences Laboratory
      Richland, Washington, United States
  • 2011–2013
    • Tongji Medical University
      • Department of Cardiology
      Shanghai, Shanghai Shi, China
    • Anhui Medical University
      Luchow, Anhui Sheng, China
    • Nanjing Medical University
      • Department of Pathogenic Biology
      Nan-ching, Jiangsu Sheng, China
    • Washington State University
      • School of Chemical Engineering and Bioengineering
      Pullman, Washington, United States
  • 2009–2013
    • University of Connecticut
      • Department of Chemical and Biomolecular Engineering
      Storrs, CT, United States
    • Chinese Academy of Sciences
      • • Institute of Subtropical Agriculture
      • • Institute of Microelectronics
      • • State Key Laboratory of Soil and Sustainable Agriculture
      Peping, Beijing, China
    • University of California, Los Angeles
      • Department of Electrical Engineering
      Los Angeles, CA, United States
    • Tongji University
      Shanghai, Shanghai Shi, China
  • 2008–2013
    • Nanyang Technological University
      • • School of Physical and Mathematical Sciences
      • • Division of Chemistry and Biological Chemistry (CBC)
      Tumasik, Singapore
  • 2007–2013
    • Tsinghua University
      • • Department of Chemistry
      • • Department of Basic Medical Sciences
      • • Analysis Center
      Beijing, Beijing Shi, China
    • Beijing FivePlus Molecular Medicine Institute
      Peping, Beijing, China
    • Guilin University of Technology
      Ling-ch’uan, Guangxi Zhuangzu Zizhiqu, China
    • Universitat Rovira i Virgili
      • Departamento de Ingeniería Química
      Tarragona, Catalonia, Spain
    • Korea Institute of Energy Research
      Sŏul, Seoul, South Korea
  • 2012
    • Wuhan University
      • State Key Laboratory of Information engineering in Surveying, Mapping and Remote Sensing
      Wuhan, Hubei, China
    • Iowa State University
      • Department of Electrical and Computer Engineering
      Ames, IA, United States
  • 2010–2012
    • Max Planck Institute of Colloids and Interfaces
      • Department of Colloid Chemistry
      Potsdam, Brandenburg, Germany
    • Northeast Institute of Geography and Agroecology
      • • State Key Laboratory of Electroanalytical Chemistry
      • • Institute of Microelectronics
      Beijing, Beijing Shi, China
  • 2008–2012
    • University of Queensland 
      • Centre for Microscopy and Microanalysis
      Brisbane, Queensland, Australia
  • 2006–2012
    • Peking Union Medical College Hospital
      Peping, Beijing, China
  • 2008–2011
    • Southeast University (China)
      Nan-ching-hsü, Jiangxi Sheng, China
  • 2008–2009
    • East China University of Science and Technology
      • School of Pharmacy
      Shanghai, Shanghai Shi, China
    • Max Planck Institute of Microstructure Physics
      • Experimental Department 2
      Halle-on-the-Saale, Saxony-Anhalt, Germany
  • 2005
    • Guilin University of Electronic Technology
      Ling-ch’uan, Guangxi Zhuangzu Zizhiqu, China