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Accuracy of corneal astigmatism correction with two Barrett Toric calculation methods

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International Journal of Ophthalmology(English edition) 2019年第10期12卷 1561-1566页

作者： Jun yang Hong Zhang xiao-tong yang Fang Tian Shao-Zhen Zhao Tianjin Medical University Eye Hospital Tianjin Medical University Eye Institute & Tianjin Medical University School of Optometry and Ophthalmology

AIM: To compare the prediction error between Barrett Toric calculator and the new online AcrySof Toric calculator which incorporated Barrett astigmatism algorithm in Chinese cataract eyes with normal axial length and anterior chamber depth(ACD). METHODS: Prospective case-control study. All the cases had axial length(21-26 mm) with ACD no less than 2.4 *** values were measured by LenSTAR 900. The Barrett Toric calculator was used in group 1. In group 2, SRK-T formula was used to determine the spherical power of the Toric lens, and subsequent calculation of the cylinder type was performed using the new online Alcon Toric calculator. At 1 and 3 mo after surgery, a comprehensive subjective optometry was performed. The predicted residual astigmatism calculated by the two calculators was compared with that obtained by postoperative refraction,and the difference was defined as the astigmatism correction error [error of refractive astigmatism(ERA)].The error magnitude(EM) refers to the algebraic deviation of ERA, and the error vector(EV) indicates the vector deviation of ERA. The influence of the two calculation methods on the correction accuracy of toric IOL was quantitatively analyzed. RESULTS: The |EM| obtained at 1 mo after surgery were0.21±0.12 D, 0.22±0.18 D in group 1 and group 2 respectively,and correspondingly turned to be 0.19±0.13 D, 0.20±0.19 D at3 mo after surgery, with no statistical difference(P=0.633,P=0.877). The vector analysis showed that |EV| values in two groups at 1 mo after surgery were 0.29±0.14@105(D@angle) and 0.35±0.20@113(D@angle), respectively,whereas |EV| values 3 mo after surgery were 0.27±0.16@86(D@angle) and 0.32±0.23@102(D@angle), respectively. The differences between the groups were not statistically significant(P=0.119, P=0.261). CONCLUSION: The clinical effect of Barrett Toric calculator has a much more accurate tendency than that of new online AcrySof Toric calculator, but is not evident in cases with normal axial length and

关键词： Barrett Toric online calculator intraocular lens vector analysis

p + ip-wave pairing symmetry at type-Ⅱ van Hove singularities

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Frontiers of Physics 2021年第5期16卷 183-189页

作者： Yin-Xiang Li xiao-tong yang Tin Ka-Ping College of Science University of Shanghai for Science and Technology

Based on the random phase approximation calculation in two-orbital honeycomb lattice model, we investigate the pairing symmetry of Ni-based transition-metal trichalcogenides by electron doping access to type-Ⅱ van Hove singularities(vHs). We find that chiral even-parity d + id-wave(Eg) state is suppressed by odd-parity p + ip-wave(Eu) state when electron doping approaches the type-Ⅱ *** type-Ⅱ vHs peak in density of states(DOS) enables to strengthen the ferromagnetic fluctuation,which is responsible for triplet pairing. The competition between antiferromagnetic and ferromagnetic fluctuation results in pairing phase transition from singlet to triplet pairing. The Ni-based transitionmetal trichalcogenides provide a promising platform to unconventional superconductor emerging from electronic DOS.

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Effect of Inoculation with Arbuscular Mycorrhizal Fungus on Nitrogen and Phosphorus Utilization in Upland Rice-Mungbean Intercropping System

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Agricultural Sciences in China 2010年第4期9卷 528-535页

作者： xiao tong-jian yang Qing-song RAN Wei XU Guo-hua SHEN Qi-rong Department of Plant Nutrition College of Resoures and Environmental Sciences Nanjing Agricultural University Nanjing 210095 P.R.China

The effect of arbuscular mycorrhiza fungi （AMF） on plant growth and nutrition utilization in upland rice and mungbean intercropping system was studied. A pot experiment was conducted in the greenhouse and AMF colonization rates of rice and mungbean roots, plant nutrient contents, the ability of nitrogen fixation, and nutrient contents changed in the soil were analyzed. The results were obtained as follows： the rates of AMF colonization of rice and mungbean roots were reached to 14.47 and 92.2% in intercopping system, and increased by 4.11 and 11.95% compared with that of in monocropping; the nirtrogen contents of mungbean and rice were increased by 83.72 and 64.83% in shoots, and 53.76 and 41.29% in roots, respectively, while the contents of iron in shoot and root of mungbean were increased by 223.08 and 60.19%, respectively. In the intercropping system with inoculation of AMF, the biomass of mungbean increased by 288.8%. However, the biomass of rice was not significantly changed among all treatments with or without inoculation of AMF recorded. The number and dry weight of nodules were significantly increased either when mungbean was intercropped with rice or inoculated with AMF. When compared with that of monocropping without AMF inoculation, the contents of nitrogen, phosphorus and iron in nodules of intercropping mungbean with inoculation increased by 80.14, 69.54 and 39.62%, respectively. Additionally, intercropping with AMF inoculation significantly increased soil nitrogen content, but reduced soil phosphorus content. We concluded that upland rice-mungbean intercropping system and inoculation with AMF improved the nutrient uptake, the ability of nitrogen fixation and the growth of mungbean.

关键词： mungbean rice arbuscular mycorrhizal fungi (AMF) intercropping nitrogen phosphorus iron root nodule

Utilizing dexamethasone intravitreal implant to control postoperative inflammation in refractory uveitis undergoing cataract surgery

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International Journal of Ophthalmology(English edition) 2021年第2期14卷 317-322页

作者： Yong-Tao Li Xue-Xue Cui xiao-tong yang Bing Li Xin-Jun Ren xiao-Rong Li xiao-Min Zhang Tianjin Key Laboratory of Retinal Functions and Diseases Eye Institute and School of OptometryTianjin Medical University Eye HospitalTianjin 300384China

AIM:To report the effectiveness of intravitreal implantation of dexamethasone implant(Ozurdex)after phacoemulsification and intraocular lens implantation in refractory uveitis ***:This single-center retrospective study conducted for refractory pan-uveitis patients who underwent cataract surgery combined with intravitreal Ozurdex *** main outcome measurements were bestcorrected visual acuity(BCVA),central retinal thickness(CRT),grade of anterior chamber cell(AAC),intraocular pressure(IOP),and systemic/ocular adverse ***:Ten eyes of 7 patients were *** showed significant improvement at 1 mo(P=0.004),3 mo(P=0.0004),and 6 mo(P=0.001)post *** were no statistically significant differences in the postoperative CRT among follow-up groups(P>0.05).No significant differences were observed in the baseline IOP when compared to 1,3,and 6 mo(all P>0.05)post *** patient developed a transient elevated IOP post *** eyes(20%)developed posterior capsular opacifications and underwent neodymium-doped yttrium aluminum garnet(Nd:YAG)laser *** six patients(8 eyes,71.4%),the systemic steroid usage was reduced to below 10 mg/*** patients experienced a mean of 1.4±0.52 recurrences of inflammation in the 6 mo before operation and 0.7±0.48 in the 6 mon post *** mean recurrence time was 13±0.58 wk(range 12-14 wk)post *** five of seven patients(7 out of 10 eyes),inflammation relapse was developed *** one patient(2 eyes)needed increased amounts of oral *** inflammation recurrence in the remaining patients was controlled by topical ***:Ozurdex is considered a safe and effective approach to control postoperative inflammation in cataract surgery for patients with refractory uveitis in our *** the disappearance of Ozurdex’s antiinflammatory effects over time,in most cases the recurrent inflammation can be controlled by topical st

关键词： phacoem ulsification intraocular lens implantation dexamethasone intravitreal implant(Ozurdex) refractory uveitis

Development and application of a GIS database for the Miyun Reservoir water quality protection

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Journal of Environmental Sciences 1999年第4期11卷 485-491页

作者： JIA Hai\|feng, CHENG Sheng\|tong, xiao yang (Department of Environmental Sciences and Engineering, Tsinghua University, Beijing 100084,China) 清华大学环境科学与工程系北京

A high quality database is the starting point for any GIS application. For the Miyun Reservoir, a large amount of spatial data has been accumulated by numerous studies. This paper introduces a GIS database development in support of these studies. And some applications of the GIS database, include integration with GPS, view and management of data, and integration with WASP5 model, are also introduced.

关键词： GIS database ARC/INFO Arcview Miyun Reservoir water quality

基于Web服务的分布式广域服务协作框架及原型的初步研究

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计算机集成制造系统 2007年第6期13卷 1184-1190页

作者：童晓阳西南交通大学电气工程学院四川成都610031

为克服企业原有异构系统信息交换少、协作少的缺点,提出一种基于面向服务的思想和Web服务技术的分布式广域服务的协作框架。阐述了Web组件通过适配器的模式访问公共对象请求代理体系结构对象、构造智能体等关键技术。将公共业务或遗留... 详细信息

为克服企业原有异构系统信息交换少、协作少的缺点,提出一种基于面向服务的思想和Web服务技术的分布式广域服务的协作框架。阐述了Web组件通过适配器的模式访问公共对象请求代理体系结构对象、构造智能体等关键技术。将公共业务或遗留系统封装成公共对象请求代理体系结构的对象或组件对象模型组件,各子系统通过Web组件接口,获得对方的数据资源与计算功能,进行充分的协作,以完成综合服务。以电力综合诊断系统原型为例,说明了框架的可行性。

关键词：广域协作框架 Web服务公共对象请求代理体系结构智能体面向服务

Immunological Evaluation of a Novel Mycobacterium tuberculosis Antigen Rv0674

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Biomedical and Environmental Sciences 2019年第6期32卷 427-437页

作者： xiao tong yang LIU Hai Can LI xiao Qin HUANG Ming Xiang LI Gui Lian LI Na YAN Yu Han LUO Qiao WANG Xue Zhi LI Ma Chao WAN Kang Lin State Key Laboratory for Infectious Diseases Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing 102206 China Key Laboratory of Laboratory Medicine Ministry of Education College of Laboratory Medicine and Life Sciences Wenzhou Medical University Wenzhou 325035 Zhejiang China Clinical laboratory Fuzhou Pulmonary Hospital Fuzhou 350008 Fujian China The first hospital of Changsha Changsha 410005 Hunan China Key laboratory of Translational Medicine of Guangdong Center for Tuberculosis Control of Guangdong Province Guangzhou 510630 Guangdong China

Objective This study aimed to characterize the diagnostic and vaccine potential of a novel Mycobacterium tuberculosisantigen Rv0674. Methods To evaluate thediagnostic potential and antigenicity of Rv0674, IgG was evaluated using ELISA and interferon (IFN)-γ was done by using ELISpot assay among TB patients and healthy donors. For immunogenicity evaluation, BALB/c mice were immunized with Rv0674. Cytokine production was determined by cytokine release assay using an ELISA kit, and the antibodies were tested using ELISA. Results The results of serum Elisa tests showed that Rv0674 specific immunoglobulin G (IgG) response was higher in TB patients than negative controls. And Rv0674 had good performance in serological test with sensitivity and specificity of 77.1% and 81.1%, respectively. While it shows poor sensitivity and specificity of 26.23% and 79.69% for IFN-γ tests. In BALB/c mice, Rv0674 adjuvant by DDA/PolyI:C could also induce a high level of IFN-γ, interleukin-2 and interleukin-6 as well as a high IgG titer in both high-and low-dose groups indicating that Rv0674 is essential in humoral and cellular immunity. Moreover, the cytokine profile and IgG isotypecharacterized Rv0674 as a Th1/Th2-mixed-type protective immunity with the predominance of Th1 cytokines. Conclusion Rv0674 may be a good potential candidate for the development of TB serological diagnosis and a new TB vaccine.

关键词： Antigen Immunologic diagnosis Mycobacterium tuberculosis Rv0674 Vaccine

Preliminary Study on Drug Susceptibility Profile and Resistance Mechanisms to Macrolides of Clinical Isolates of Non-tuberculous Mycobacteria from China

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Biomedical and Environmental Sciences 2018年第4期31卷 290-299页

作者： LI Fu LI Gui Lian PANG Hui LIU Hai Can xiao tong yang LI Shuang Jun LUO Qiao JIANG Yi WANG Rui Bai WAN Kang Lin State Key Laboratory for Infectious Diseases Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Immunology Department Changzhi Medical College Key Laboratory of Laboratory Medicine Wenzhou Medical University

Objective Macrolide susceptibility and drug resistance mechanisms of clinical non-tuberculous mycobacteria（NTM） isolates were preliminarily investigated for more accurate diagnosis and treatment of the infection in China. Methods Four macrolides, including clarithromycin（CLAR）, azithromycin（AZM）, roxithromycin（ROX）, and erythromycin（ERY）, were used to test the drug susceptibility of 310 clinical NTM isolates from six provinces of China with the broth microdilution method. Two resistance mechanisms, 23 S r RNA and erm, were analyzed with nucleotide sequence analysis. Results Varied effectiveness of macrolides and species-specific resistance patterns were observed. Most Mycobacterium abscessus subsp. massiliense were susceptible and all M. fortuitum were highly resistant to macrolides. All the drugs, except for erythromycin, exhibited excellent activities against slow-growing mycobacteria, and drug resistance rates were below 22.2%. Only four highly resistant strains harbored 2,058/2,059 substitutions on rrl and none of other mutations were related to macrolide resistance. G2191 A and T2221 C on rrl were specific for the M. abscessus complex（MABC）. Seven sites, G2140 A, G2210 C, C2217 G, T2238 C, T2322 C, T2404 C, and A2406 G, were specifically carried by M. avium and M. intracellulare. Three sites, A2192 G, T2358 G, and A2636 G, were observed only in M. fortuitum and one site G2152 A was specific for M. gordonae. The genes erm（39） and erm（41） were detected in M. fortuitum and M. abscessus and inducible resistance was observed in relevant sequevar. Conclusion The susceptibility profile of macrolides against NTM was demonstrated. The well-known macrolide resistance mechanisms, 23 S r RNA and erm, failed to account for all resistant NTM isolates, and further studies are warranted to investigate macrolide resistance mechanisms in various NTM species.

关键词： Non-tuberculous mycobacteria Macrolide Drug resistance

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人脸轮廓定位和归一化的研究

系统仿真学报 2005年第3期17卷 701-703,709页

作者：童晓阳杨名利西南交通大学电气学院成都610031 西南交通大学计算机与通信工程学院成都610031

研究了准确定位出从头顶到脖子的人脸曲线外轮廓的算法。采用人脸粗检、边缘检测、区域连通性滤波等方法。其思路是,首先粗检出人脸大致的矩形外轮廓,再做边缘检测、有效信息二值化、区域连通性滤波、轮廓点修正、对优先区域和整幅图像... 详细信息

研究了准确定位出从头顶到脖子的人脸曲线外轮廓的算法。采用人脸粗检、边缘检测、区域连通性滤波等方法。其思路是,首先粗检出人脸大致的矩形外轮廓,再做边缘检测、有效信息二值化、区域连通性滤波、轮廓点修正、对优先区域和整幅图像做垂直水平投影等处理,获取准确的人脸轮廓。还研究了通过比例变换、直方图修正等获得归一化面像。本算法适用于精确定位单一背景的人脸轮廓,复杂背景下也有较好效果。实验结果表明了本算法的有效性。本算法已经成功地应用于一个面像识别系统。

关键词：人脸检测轮廓定位归一化区域连通性滤波