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| 1 | Topographical Evaluation of the Decentration of Orthokeratology Lenses显示文摘Purpose: To evaluate the amount of lens decentration and various factors affecting decentration after orthokeratology lens wear and to observe the effect of decentration on the visual functions.Methods: Two kinds of orthokeratology lenses were fitted to 270 eyes of 135 patients [initial mean refractive error: (-3.98±1.51)D]. Humphery Instruments ATLAS 990 was used for the computer-assisted analysis of corneal topographical maps. The examination of corneal topography was performed on patients before and after 6 months of wearing orthokeratology lenses. The amount of decentration of orthokeratology lenses was measured by finding the distance between center of optic zone and the pupil center. The factors influencing the amount of decentration were analyzed, including the initial refraction error, astigmatism, keratometry values, corneal eccentricity, and the diameter of lens.Visual symptoms including monocular diplopia, glare around lights were recorded to evaluate the effects of decentration on visual functions.Results: The mean amount of decentration was (0.49±0.34) mm after one night's wear.The mean amount of decentration after 1 month, 3 months and 6 months was (0.57±0.41) mm, (0.55±0.48) mm and (0.59±0.39) mm, respectively. After one month, the amount of decentration was less than 0.50 mm in 51.1% eyes, 0.50~1.0 mm in 35.6% eyes and more than 1.00 mm in 13.3% eyes. The direction of decentration of more than 0.50 mm was mainly in the temporal quadrant (48.5%). Patients with greater initial astigmatism and smaller lenses showed greater decentration (P<0.05). There was no statistically significant difference in decentration between the two groups with different corneal eccentricities and keratometry values (P>0.05). The amount of decentration was greater in patients who complained of monocular diplopia and glare.Conclusions: The amount of decentration of orthokeratology depends on the initial refractive error, astigmatism and the design of orthokeratology lenses. Improvement in fitting technology and lens design can lead to reduced incidence of decentration and visual symptoms. | Xiao Yang Xingwu Zhong Xiangming Gong Junwen Zeng | 2005 | Eye Science2005，21，3： | 10 |
| 2 | Enabling an intrinsically safe and high-energy-density 4.5 V-class Li-ion battery with nonflammable electrolyte显示文摘Developing nonflammable electrolyte with a wide electrochemical window has become an urgent demand for high-energy-density and high-safe lithium-ion batteries(LIBs).Herein,a fluorinated nonflammable phosphate electrolyte is developed to construct a safe 4.5 V-class LIB(Si-SiC-C/0.35Li2MnO3-0.65LiNi0.5Mn0.5O2).The proposed fluorinated phosphate electrolyte,0.8 M LiPF6/tris(2,2,2-trifluoroethyl)phosphate(TFEP)+5 vol%fluoroethylene carbonate(FEC)+5 vol%vinylene carbonate(VC),is not only completely nonflammable but also exhibits excellent oxidative/reductive stability on 0.35Li2MnO30.65LiNi0.5Mn0.5O2 cathode and Si-SiC-C anode.The in situ differential electrochemical mass spectrometry and X-ray photoelectron spectroscopy proved that TFEP-based electrolyte does not decompose into gases but forms a high-quality electrode-electrolyte interface on cathode surface at high working potential.The 4.5 V-class LIBs using 0.8 M LiPF6 TFEP-based nonflammable electrolyte shed some light on potential application for high-safe and low-cost larger-scale energy storage. | Ziqi Zeng Xingwei Liu Xiaoyu Jiang Zhenjie Liu Zhangquan Peng Xiangming Feng Weihua Chen Dingguo Xia Xinping Ai Hanxi Yang Yuliang Cao | 2020 | InfoMat2020，2，5： | 6 |
| 3 | A new kind of magnetic targeting induction heating drug carrier and its physical and biological properties显示文摘Nano-carbon and iron composite―carbon-coated iron nanoparticles (CCINs) produced by carbon arc method can be used as a new kind of magnetic targeting induction heating drug carrier for cancer therapy. The structure and morphology of CCINs are studied by X-ray diffraction (XRD) and transmission electron microscope (TEM). Mossbauer spectra of these nanoparticles show that they contain only iron and carbon, without ferric carbide and ferric oxide. CCINs can be used as the magnetic drug carrier, with the effect of targeting magnetic induction heating in its inner core and higher drug adsorption in its nano-carbon shell outside because of its high specific surface area. CCINs can absorb Epirubicin (EPI) of 160 μg/mg measured by an optical spectrometer. In acute toxicity experiment with mice, the median lethal dose (LD50) of EPI is 16.9 mg/kg, while that of EPI-CCINs mixture is 20.7 mg/kg and none of the mice died after pure CCINs medication. The results show that pure CCINs belong to non-toxic grade and EPI delivery in mixture with CCINs can reduce its acute toxicity in mice. The magnetic properties of CCINs and their magnetic induction heating are investigated. The iron nanoparticle in its inner core has better magnetism with a good effect on targeting magnetic induction heating. When the CCINs are mixed with physiological salt water and are injected uniformly in pig's liver, the temperature goes up to 48℃. While in the case that CCINs are filled in a certain section of pig's liver, the temperature goes up to 52℃. In both cases the temperature is high enough to kill the cancer cell. CCINs have potential applications in cancer therapy. | ZHANG HaiYan CHEN YiMing ZHENG Yun LAO XiangMing ZENG GuoXun PANG JinShan WU QiGuang LI JinQing | 2009 | Science China(Technological Sciences)2009，52，10： | 2 |
| 4 | Thermal and elemental analysis of the combustion chamber deposits in a large-scale two-stroke marine diesel engine显示文摘It is of significance to understand the chemical content of carbon deposits in the large-scale two-stroke(LSTS) marine diesel engine because of adverse effect on the engine performance, oil consumption and emissions. In this work, two different combustion chamber deposits in an LSTS marine diesel engine were studied using thermogravimetry analysis(TGA), elemental analysis(EA) and synchrotron X-ray fluorescence(SXRF). One was on the piston top and the other on the piston land, termed PTCD and PLCD, respectively. For the PTCD sample, the 97% residue in the TGA and 1.4% carbon content in the EA indicated the main compositions of PTCD were metal salts or oxides and ashes, significantly different from the previous findings of the highest carbon content in deposits from the small four stroke engines. The different chemical content between PTCD and PLCD implied higher thermal load in the LSTS marine diesel engine led to a nearly complete thermal decomposition of PTCD. The higher calcium content in PTCD and PLCD indicated the additives of cylinder oil should be the main source of metal content of PTCD and PLCD. Calcium distribution in the SXRF results was indicative of the potential layered structure in PTCD and PLCD. In addition, the appearance of iron on the surface against the piston in PTCD and PLCD indicated iron oxides formation between carbon deposit and piston materials. | ZHANG XuSheng ZENG XiangMing SUN XiuCheng DENG Biao PENG GuanYun XIE HongLan WU ZhiJun XIAO TiQiao | 2015 | Science China(Technological Sciences)2015，58，10： | 2 |
| 5 | Research on the aerodynamic characteristics of ellipse wing sail 显示文摘 | HU Yihuai LI Songyue ZENG Xiangming | 2012 | Ad- vanced materials research2012，，： | 1 |
| 6 | Effects of modified fertilization technology on the grain yield and nitrogen use efficiency of midseason rice显示文摘 | Xiangming Zeng Baoji Han Fangsen Xu Jianliang Huang Hongmei Cai Lei Shi | 2012 | Field Crops Research2012，，： | 1 |
| 7 | Modern Surgical Treatment of Congenital Subluxated Lenses显示文摘Traditional surgical management of subluxated lenses is usuallyassociated with a high incidence of operative and postoperative complicationand a poor visual outcome.We treated a series of 14 patients(26 eyes)whose visual acuity could not be improved with optical correction(phakic oraphakic)with modern microsurgery and automated suction-cutting devices.Preoperative visual acuity ranged from 0.05 to 0.3.Improvement in post-opera-tive visual acuity was documented in all operated eyes,ranging from 0.4 to 1.... | Xiangming Guo Yuozhao Chen Linghua Zeng National Ophthalmological Laboratories,Ministry of Public Health,China Zhongshan Ophthalmic Center,Sun Yat-sen University of Medical Sciences,Guangzhou 510060,China | 1992 | 眼科学报1992，8，3： | 0 |
| 8 | Retinoma and Phthisis Bulbi of Retinoblastoma 1.Clinical and Genetic Analysis显示文摘Retinoma and phthisis bulbi of retinoblastoma are rare entitiesfound in retinoblastoma patients and their relatives.Eleven cases of phthisisbulbi of retinoblastoma and 9 cases of retinoma were identified from 1966 to1991 in our center.The clinic data show that retinoma and phthisis bulbi areclosely related to the retinoblastoma gene.Enucleation should be carried outas soon as possible without hesitation for the phthisis of eyes with retinoblas-toma.Genetic counseling and frequent observation should be p... | Qingjiong Zhang Youzhao Chen Zhongyao Wu Qiaoyun Ma Ruiping Zeng Xiangming Guo Danyang Li National Ophthalmological Laboratories,Ministry of Public Health,China Zhongshan Ophthalmic Center,Sun Yat-sen University of Medical Sciences,Guangzhou 510060,China | 1992 | 眼科学报1992，8，3： | 0 |
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