The 97 Hospital of Chinese PLA

Tongshan, China

The 97 Hospital of Chinese PLA

Tongshan, China
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Shang H.,PLA Fourth Military Medical University | Yu S.,The 97 Hospital of Chinese PLA | Lin Y.,PLA Fourth Military Medical University | Zhang M.,PLA Fourth Military Medical University | And 3 more authors.
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | Year: 2012

Silver mesocrystals have been synthesized via oriented attachment of primary building nanoparticles in simple and fast replacement reactions between AgNO 3 solution and Sn. The formation process of silver mesocrystals is discussed in detail and the growth mechanism is suggested to describe the formation of silver mesocrystals. In a 200 mmol/L solution, the primary nanoparticles orientationally aggregate along <211> directions to form a dendrite, the proposed attachment planes and directions for Ag nanoparticles are 3×{422} planes and <211> directions, respectively. When the concentration increases to 1 mol/L, the primary building nanoparticles orientotionally aggregate along <211> directions to form dendrites. The dendrites that can be proposed as the second building units orientationally attach along <110> directions to construct a porous monocrystalline plate, and finally transit to a mesocrystal with a thickness about 50 nm. When the AgNO 3 concentration is 2 mol/L, the building units are Ag triangle platelets. These platelets also orientationally attach along <110> directions to form a monocrystalline dense plate and finally the plate transforms to monocrystalline mesocrystal with a thickness over 100 nm. © 2012, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.


Zhou Z.,PLA Fourth Military Medical University | Yu S.,The 97 Hospital of Chinese PLA | Lin Y.,PLA Fourth Military Medical University | Zhang M.,PLA Fourth Military Medical University | And 3 more authors.
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | Year: 2011

Nanostructured Ag with different morphologies and structures was prepared by replacement reaction (Zn versus AgNO3). The influence of AgNO3 concentration on the growth speed, the morphology and the structure of the nanostructured Ag was investigated. Experimental results show that the growth speed, morphologies and structures of the nanostructured Ag strongly depend on AgNO3 concentration and reaction time. The growth speed is mainly dependent on the AgNO3 concentration; the higher the concentration, the faster the growth speed. When the AgNO3 concentration is 5 mmol/L, Ag fractal forms at the beginning stage, but the fractal transforms to dendrite consisting of nanoparticles and to monocrystal at last as the reaction proceeds. When the concentration is in the range of 20-100 mmol/L, the products are all Ag dendrites, but the dendrites consist of nanoparticles when the concentration is below 40 mmol/L while they are monocrystal when the concentration is above 60 mmol/L. Ag nanostructures with different morphologies and structures can be prepared by controlling AgNO3 concentration and reaction time. Copyright © 2011, Northwest Institute for Nonferrous Metal Research.


Chen H.-j.,The 97 Hospital of Chinese PLA | Zhang A.-s.,Health Team of the 73085 Troop of Chinese PLA | Lin J.-z.,The 97 Hospital of Chinese PLA | Qian Q.-c.,The 97 Hospital of Chinese PLA | And 2 more authors.
Journal of Clinical Rehabilitative Tissue Engineering Research | Year: 2011

BACKGROUND: Previous research has testified that zinc can improve the healing rate and enhance the fixation strength of implants. OBJECTIVE: To observe the effect of zinc on the morphology of implant-bone interface. METHODS: Forty adult male rabbits were involved and divided into zinc supplement group and control group. The titanium implants were implanted into bilateral tibias at the proximal end to establish animal models of titanium implants. Zinc sulfate of 10 g/L was administered intramuscularly to the animals in the zinc supplement group at the dose of 4 mg/kg once per day, and those in the control group were treated with saline at the same dose. The animals were killed at 1, 2, 4, 8 and 12 weeks after treatment. Stereomicroscope and scanning electron microscopy were used to observe the morphology of the implant-bone interface. RESULTS AND CONCLUSION: Zinc supplement could accelerate the new bone formation on the implant-bone interface at 1-4 weeks after treatment to facilitate the fusion between the implant and bone. It is indicated that amount of zinc supplement can promote the new bone formation and enhance the speed and quality of bone healing.


Han B.,The 97 Hospital of Chinese PLA | Feng H.,The 97 Hospital of Chinese PLA | Chen S.,The 97 Hospital of Chinese PLA | Wang D.-G.,Xuzhou Medical College | Zhang C.-K.,The 97 Hospital of Chinese PLA
Chinese Journal of Tissue Engineering Research | Year: 2015

BACKGROUND: The commonly used methods of repairing the acromioclavicular joint dislocation are Kirschner wire tension band internal fixation, clavicular hook internal fixation and suture anchor internal fixation. Each method has their advantages and disadvantages. Both Kirschner wire and clavicular hook require secondary surgery to remove the internal fixators, and their design is not based on the biomechanical principle. OBJECTIVE: To reconstruct coracoclavicular ligament using anchor and perform biomechanical tests. METHODS: Ten shoulder antisepsis specimens were numbered and each specimen was tested by three trials. (1) Stretching coracoclavicular ligament: Specimens were fixed on the biomechanical machine and were tensile until the ligament was ruptured, the maximum failure load was recorded. (2) Reconstruction of coracoclavicular ligament using an anchor: Coracoclavicular ligment was reconstructed using an anchor, then specimens were fixed on the biomechanical machine and were tensile until the ligament was ruptured, the maximum failure load was recorded. (3) Reconstruction of coracoclavicular ligament using two anchors: Coracoclavicular ligment was reconstructed using two anchors, then specimens were fixed on the biomechanical machine and were tensile until the ligament was ruptured, the maximum failure load was recorded. RESULTS AND CONCLUSION: Coracoclavicular ligament fracture load was (413.0±123.48) N; the failure load was (345.1±111.23) N in an anchor group and 465.3±100.64 N in two anchors group. When coracoclavicular ligament is reconstructed using an anchor, the stress is concentrated under external forces, which is prone to the extraction of anchor and the failure of surgery, biomechanical data showed that the fracture load is lower than the coracoclavicular ligament, so the reconstruction is not reliable; when coracoclavicular ligament is reconstructed using two anchors, the stress is dispersed, which meet the biological features and the biomechanical data are ideal. © 2015, Journal of Clinical Rehabilitative Tissue Engineering Research. All rights reserved.

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