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A new chain-like heteropolytungstate formed by Keggin cluster units:Synthesis and structure of[H2bpy]3[SiMnW(11)O(39)].1.25H2O

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Chinese Chemical Letters 2007年第1期18卷 81-84页

作者： Jing xin Meng Ying Ma xin xin Xu yang guang Li En Bo Wang Key Laboratory of Polyoxometalate Science of Ministry of Education Department of Chemistry Northeast Normal University Ren Min Street No.5268 Changchun Jilin 130024 PR China

A new heteropolytungstate, [H2bpy]3[SiMnW11O39]· 1.25H2O （1）, has been prepared under mild hydrothermal conditions and structurally characterized by single crystal X-ray diffraction. It is the first characterized compound containing ID zigzag chain of transition metal substituted Keggin heteropolytungstate, which is connected through a common oxygen atom. The elemental analysis and IR of it are also described.

关键词： Heteropolytungstate Keggin clusters Zigzag chain

A comparative study of pseudo-static slope stability analysis using different design codes

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Water Science and Engineering 2018年第4期11卷 310-317页

作者： xin-guang yang En-di Zhai Yuan Wang Zhong-bo Hu Central Research Institute of Building and Construction Co. Ltd. MCC Group Beijing 100088 China Goldwind Science & Technology Co. Ltd. Beijing 100176 China College of Mechanics and Materials Hohai University Nanjing 210098 China China Three Gorges Corporation Beijing 100038 China

Many researchers have developed new calculation methods to analyze seismic slope stability problems, but the conventional pseudo-static method is still widely used in engineering design due to its simplicity. Based on the Technical Code for Building Slope Engineering（GB 50330-2013） of China and the Guidelines for Evaluating and Mitigating Seismic Hazards in California（SP117）, a comparative study on the pseudo-static method was performed. The results indicate that the largest difference between these two design codes lies in determination of the seismic equivalence reduction factor( f;). The GB 50330-2013 code specifies a single value for f;of 0.25. In SP117, numerous factors,such as magnitude and distance, are considered in determining f;. Two case studies show that the types of slope stability status evaluated by SP117 are in agreement with those evaluated by the seismic time-history stability analysis and Newmark displacement analysis. The factors of safety evaluated by SP117 can be used in practice for safe design. However, the factors of safety evaluated by GB 50330-2013 are risky for slope seismic design.

关键词： Earthquake Slope stability Pseudo-static method Design code

A pilot study of intraocular lens explantation in 69 eyes in Chinese patients

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International Journal of Ophthalmology(English edition) 2017年第4期10卷 579-585页

作者： Fang Chai Bo Ma xin-guang yang Juan Li Mei-Fang Chu Xi’an No.4 Hospital Shaanxi Ophthalmic Medical CenterAffiliated Guangren HospitalSchool of MedicineXi'an Jiaotong University

AIM：To study the effects of intraocular lens（IOL） explantation and demographic ***：Retrospective non-comparative case *** data recorded from patient charts included the following：demographic,preoperative and postoperative characteristics;complications;surgical methods,and changes in visual ***：A total of 69 eyes in 67 Chinese patients who received IOL explants were *** patients＇ mean age at the time of explantation was 46.1 years old [SD 22.5（6-85）],and 37 patients were female（55.2%）.Regarding employment,47.8% were farmers,23.9% were retired,16.4% were students,4.5% were unemployed,3% were workers,and 4.5% were other（including staff members,teachers and officers）.The main reasons for explantation were dislocation/decentration in 41 cases（59.4%） and retinal detachment in 10 cases（14.5%）.The third most prevalent cause was incorrect lens power in 7 eyes（10.1%）.The remaining reasons were endophthalmitis in 6 cases（8.7%）,posterior capsular opacity in 3 eyes（4.3%）,and impacting retinal surgery operation in 2 cases（2.9%）.The main comorbidities were high myopia in 18 eyes（26.1%）,trauma in 8 eyes（11.6%）,retinal detachment in 6 eyes（8.7%）,congenital cataracts in 8 eyes（11.6%）,and Marfan＇s syndrome in 2 eyes（2.9%）.The mean time from implantation to explantation was 4.0y [SD 4.2（0.005-15）].Treatment after explantation included posterior chamber IOL implantation in 44 eyes（63.8%） and aphakia in 25 eyes（36.2%）.After surgery,the best corrected visual ability（BCVA） was improved in 50 cases（72.5%）,including 28 patients（40.6%） in whom visual ability was improved by more than two ***：Dislocation/decentration is the main cause for explantation,and high myopia is a main risk *** chamber IOL implantation remains the most elected treatment after explantation.

关键词： explantation intraocular lens dislocation

Diagnostic ability of ganglion cell complex thickness to detect glaucoma in high myopia eyes by Fourier domain optical coherence tomography

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International Journal of Ophthalmology(English edition) 2018年第5期11卷 791-796页

作者： Wei-Wei Wang Huai-Zhou Wang Jian-Rong Liu Xi-Fang Zhang Meng Li Yan-Jiao Huo xin-guang yang Department of Ophthalmology Xi'an No.4 HospitalShaanxi Ophthalmic Medical CenterAffiliated Guangren Hospital School of MedicineXi'an Jiaotong University Department of Ophthalmology Beijing Tongren HospitalCapital Medical University

AIM：To evaluate the ability of macular ganglion cell complex（GCC） thickness using Fourier domain optical coherence tomography（FD-OCT） to detect glaucoma in highly myopic ***：Cross-sectional study.A total of 114 participants,consecutively were *** GCC thickness and peripapillary retinal nerve fiber layer（RNFL） thickness were obtained with RTVue *** operating characteristics curves were constructed for each measurement parameter,and areas under the curves（AUCs） were ***：Both the average GCC and average RNFL thickness showed negative correlations with axial length（rGCC=-0.404,P=0.001;rRNFL=-0.561,P〈0.001）.The largest AUCs from GCC,and RNFL parameters were 0.968 [global loss volume（GLV）],and 0.855（average RNFL）,*** was significantly better for detecting high myopic glaucoma than average RNFL（P〈0.001）.CONCLUSION：Macular GCC thickness has higher diagnostic power than peripapillary RNFL thickness to discriminate glaucoma patients from non-glaucoma subjects in high myopia.

关键词： optical coherence tomography glaucoma high myopia ganglion cell complex

Multiphysics simulation and optimization of the in-situ beneficiation process of ilmenite minerals from lunar regolith

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Science China Earth Sciences 2025年第1期68卷 195-207页

作者： Peng ZHANG xin LIU guanghui LIU Wei DAI Hanzhe yang Haibo ZHENG Zhi WANG Ran NIU Yifan BAI yang ZHANG Chengbao LIU Ge yang Junwei yang guang ZHANG Technology and Engineering Center for Space Utilization Chinese Academy of Sciences Beijing Hegong Simulation Co. Ltd

The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions. The classified collection and processing of lunar minerals is the basic prerequisite for the in-situ exploration and utilization of lunar resources. In this study, we propose a scheme for in-situ separation of magnetic minerals from lunar soils using the dry magnetic separation method. The scheme can realize the purpose of separating magnetic minerals from lunar regolith by altering the motion trajectory of lunar regolith particles with different magnetic properties. Detailed modeling of the dry magnetic separation device is conducted, and the three-dimensional distribution of magnetic parameters is calculated and analyzed. Based on the characterization and analysis of the Chang E-5's samples, the morphologies and physical parameters of lunar regolith particles are modeled and simulated. A discrete element simulation of the motion process of lunar regolith particles under multi-physical field conditions is performed, and the influences of key parameters on the beneficiation performance of lunar magnetic minerals are investigated. Our results indicate that optimal separation and beneficiation of lunar regolith particles can be achieved under specific conditions of magnetic field strength and drum speed. Additionally, we analyze the effects of lunar weak gravity conditions and the charged nature of lunar particles on the beneficiation process, showing that these factors can obviously enhance the beneficiation process of lunar ilmenites. This study demonstrates the feasibility of using the dry magnetic separation method for the beneficiation of magnetic minerals from lunar regolith, providing a theoretical basis for the scientific tasks of collecting, processing, and utilizing lunar mineral resources.

关键词： Lunar regolith In-situ resource utilization Magnetic separation Classified sampling

Hybrid surgery for symptomatic chronic near-total or total occlusion of the internal carotid artery

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Chinese Medical Journal 2021年第9期134卷 1104-1106页

作者： Chang-Ming Wang Jin-Tao Han Zi-Chang Jia guang-xin yang Xuan Li Department of Vascular Surgery and Interventional Radiology Peking University Third HospitalBeijing 100191China

Stroke is the second leading cause of death globally and accounts for an estimated 5.5 million deaths each year worldwide.[1]Revascularization of the carotid artery is one of the key procedures to reduce the incidence of *** total occlusion(TO)and near-total occlusion(NO)of the carotid artery are *** for TO and NO is controversial with potential complications,including periprocedural stroke,intracranial hemorrhage,and carotid-cavernous fistula(CCF).[2]There have been attempts to implement carotid artery endarterectomy(CEA)and endovascular treatment,but the success rates were far from *** patients with TO,the success rate of revascularization is around 40%and 60%,respectively,for CEA and endovascular technique.[3]For patients with NO,the morbidity and mortality rates are 3%and 9%,respectively.

关键词： carotid occlusion artery

Multiclass screening of ＞ 200 pharmaceutical and other residues in aquatic foods by ultrahigh performance liquid chromatography-quadrupole-Orbitrap mass spectrometer

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Multiclass screening of ＞ 200 pharmaceutical and other resi...

中国化学会第十三届全国分析化学年会

作者： Cong Kong yang Wang guang-xin yang Yong-Fu Shi Xiao-Yi Lou Hui-Juan Yu Key Laboratory of East China Sea Fishery Resources Exploitation Ministry of Agriculture East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences

A quick screening method of ＞200 pharmaceutical and other residues in aquatic foods based on ultrahigh performance liquid chromatography-quadrupole-Orbitrap mass spectrometer system（UHPLC-Q/Orbitrap MS） was established. In this method, after the addition of 200 μL of 1 M EDTA-Na2, 2 g homogenates were extracted successively with 10 mL of acetonitrile and 10 mL of ethyl acetate. The extracts were combined and dried under nitrogen flow, and redissolved in 0.1% formic acid in acetonitrile/water（4:6, v/v） for analysis. The prepared samples were analyzed through UHPLC-Q/Orbitrap MS system, at Full MS/ddMS2（full-scan data-dependent MS/MS） mode. Identification was performed through the comparison of the sample data with the database for standard chemicals, including the retention time, precursor ion, product ions and isotope pattern for all 206 compounds. Five different aquatic food matrices（carp, shrimp, crab, eel, and mussel） spiked with the analytes at 1, 10, and 50 ng/g were evaluated to assess recoveries, precision, matrix effects, stability, and detection limits using the method. UHPLC analyses were 25 min, and 178-200 analytes met identification criteria at 50 ng/g depending on the matrix. Furthermore, practical application of this method for real samples displayed strong screening capability

关键词： Veterinary Drug Aquatic Food Screening Orbitrap Pesticide Contaminant Residue

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原发性闭角型青光眼心理和行为特征调查

国际眼科杂志 2009年第11期9卷 2168-2171页

作者：陈莉杨新光陈蕊中国陕西省西安市第四医院眼科 710004

目的:研究闭角型青光眼患者的心理、个性和行为特征,探讨青光眼患者心理因素与疾病的关系。方法:运用SCL-90、艾森克个性问卷和A型行为问卷对100例青光眼患者和45例正常对照组进行测试比较。结果:SCL-90评分中,青光眼组的躯体化、人际... 详细信息

目的:研究闭角型青光眼患者的心理、个性和行为特征,探讨青光眼患者心理因素与疾病的关系。方法:运用SCL-90、艾森克个性问卷和A型行为问卷对100例青光眼患者和45例正常对照组进行测试比较。结果:SCL-90评分中,青光眼组的躯体化、人际关系、抑郁、焦虑、敌对、恐怖、偏执、精神病性等症状因子评分和SCL-90总分均明显高于对照组(P<0.05),而强迫因子得分两组间差异无显著性。A型行为问卷测评结果,青光眼组TH量表得分高于正常组,有明显差异,TH+CH和CH得分两组间无明显差异。青光眼组的精神病性(P)、神经质或情绪(N)得分明显高于对照组(P<0.05),而内外向、掩饰两项得分青光眼与对照组无显著性差异(P<0.05)。结论:社会心理因素与原发性青光眼有明确的联系,青光眼患者主要表现为A型性格,患者的精神性和神经质倾向人格特征与闭角型青光眼发病密切相关。

关键词：青光眼心理个性

青光眼心理特征和心理干预对青光眼患者影响的研究进展

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国际眼科杂志 2009年第9期9卷 1737-1740页

作者：杨新光陈莉陈蕊中国陕西省西安市第四医院眼科 710004

青光眼是全世界范围内的主要致盲性眼病之一,虽然其病因至今尚未完全清楚,但社会心理因素在青光眼的临床诊疗过程中的作用逐渐引起人们的关注。我们就青光眼的心理特征的评价和心理干预对青光眼患者影响的研究概况做一综述。

关键词：青光眼心理特征心理干预