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不同生物测量参数下短眼轴白内障患者人工晶状体度数计算公式准确性比较

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国际眼科杂志 2025年第1期25卷 112-117页

作者：夏阳蔺云霞徐玲沈阳何氏眼科医院有限公司辽宁省沈阳市110034

目的:比较不同角膜曲率和前房深度短眼轴白内障人群7种人工晶状体计算公式的屈光预测准确性,并分析预测误差的影响因素。方法:回顾性分析了2020-11/2021-12在沈阳何氏眼科医院单纯行白内障超声乳化术的短眼轴患者125例125眼。按角膜曲率... 详细信息

目的:比较不同角膜曲率和前房深度短眼轴白内障人群7种人工晶状体计算公式的屈光预测准确性,并分析预测误差的影响因素。方法:回顾性分析了2020-11/2021-12在沈阳何氏眼科医院单纯行白内障超声乳化术的短眼轴患者125例125眼。按角膜曲率(Km)分为低平Km组(≤45.5 D)、中高Km组(45.5 D

关键词：短眼轴角膜曲率前房深度公式屈光误差

PE-EDD:An efficient peer-effect-based financial fraud detection approach in publicly traded China firms

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CAAI Transactions on Intelligence Technology 2022年第3期7卷 469-480页

作者： hui xia hui Ma Ping Cheng School of accounting Chongqing University of TechnologyChongqingChina Chongqing Rural Commercial Bank ChongqingChina

Financial fraud arises from the exaggeration of business interests,and an accurate detection or prediction is a useful tool for both corporate management and capital market systems.A collection of computer technologies has been made on this problem so far,and one of the most important solutions is unsupervised learning *** them,most approaches work by analysing the internal relations in financial data and finding a new description of non-fraud ***,current studies focus a lot on the geometry attribute of financial data,while overlooking the obvious behaviour patterns and peer effects among *** has limited the accuracy of representation and furthermore the detection *** this work,a very general class of functions is allowed to represent firms,constraining them by peer effects between firms and presenting an error-distribution-based financial fraud firm detection *** results have shown great performance of the proposed approach.

关键词： detection financial fraud NMF peer effect

Super Jaulent-Miodek hierarchy and its super Hamiltonian structure~ conservation laws and its self-consistent sources

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Frontiers of Mathematics in China 2014年第6期9卷 1367-1379页

作者： hui WANG Tiecheng xia College of Art and Sciences Shanghai Maritime University Shanghai 201306 China Department of Mathematics Shanghai University Shanghai 200444 China

A super Jaulent-Miodek hierarchy and its super Hamiltonian structures are constructed by means of a kind of Lie super algebras and super trace identity. Moreover, the self-consistent sources of the super Jaulent-Miodek hierarchy is presented based on the theory of self-consistent sources. Further- more, the infinite conservation laws of the super Jaulent-Miodek hierarchy are also obtained. It is worth noting that as even variables are boson variables, odd variables are fermi variables in the spectral problem, the commutator is different from the ordinary one.

关键词： Super Jaulent-Miodek hierarchy self-consistent sources fermivariables conservation law

Study of the Reconstruction of Fractal Structure of Closed-cell Aluminum Foam and its Thermal Conductivity

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Journal of Thermal Science 2012年第1期21卷 77-81页

作者： Dehong xia Shanshan Guo ling Ren Department of Thermal Engineering University of Science and Technology Beijing Beijing 100083 China

Based on the characteristics of the internal structure of closed-cell aluminum foam, this paper attempts to illus- trate the process of reconstructing the internal structures of closed-cell aluminum foam in Monte-Carlo method and the fractal characteristics of the reconstructed model. Furthermore, Binary Array Method is proposed by analyzing the reconstructed model and the thermal conductivity model of closed-cell aluminum foam is established. At the same time, the thermal conductivity of the foam materials with different porosity is calculated by Binary Array Method, and the calculated value coincides with the experimental results in the reference, which proves the correctness of these methods.

关键词： fractal closed-cell aluminum foam reconstruction Binary Array Method thermal conductivity

Stability and Instability of Schwarzschild-AdS for the Nonlinear Einstein-Klein-Gordon System

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Acta Mathematicae Applicatae Sinica 2022年第4期38卷 778-812页

作者： Feng-xia LIU Bo-ling GUO Institute of Artificial Intelligence Beihang UniversityBeijing 100083China Institute of Applied Physics and Computational Mathematics Beijing 100088China

In this paper,we study the global behavior of solutions to the spherically symmetric(it means that the problem is 2+2 framework)coupled Nonlinear-Einstein-Klein-Gordon(NLEKG)system in the presence of a negative cosmological *** prove the well posedness of the NLEKG system in the Schwarzschild-AdS spacetimes and that the Schwarzschild-AdS spacetimes(the trivial black hole solutions of the EKG system for whichφ=0 identically)are asymptotically *** perturbations of Schwarzschild-AdS initial data again lead to regular black holes,with the metric on the black hole exterior approaching a SchwarzschildAdS *** argument on the black hole exterior,with the redshift effect and weighted Hardy inequalities playing the fundamental role in the *** integrated decay and pointwise decay estimates are obtained.

关键词： nonlinear-Einstein-Klein-Gordon equation schwarzschild-AdS spacetime well-posedness bootstrap

Multi-modality measurement and comprehensive analysis of hepatocellular carcinoma using synchrotron-based microscopy and spectroscopy

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Nuclear Science and Techniques 2021年第9期32卷 136-149页

作者： Gong-xiang Wei Sui-xia Zhang Zhao Li Fu-Li Wang Yan-ling Xue Te Ji hui-Qiang Liu School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255000China State Key Laboratory of Pathogenesis PreventionTreatment of Central Asian High Incidence DiseasesFirst Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054China Oncology Department ZiBo Central HospitalZibo 255000China SSRF Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201800China

The visualization and data mining of tumor multidimensional information may play a major role in the analysis of the growth,metastasis,and microenvironmental changes of tumors while challenging traditional imaging and data processing *** this study,a general trans-scale and multi-modality measurement method was developed for the quantitative diagnosis of hepatocellular carcinoma(HCC)using a combination of propagation-based phase-contrast computed tomography(PPCT),scanning transmission soft X-ray microscopy(STXM),and Fourier transform infrared micro-spectroscopy(FTIR).Our experimental results reveal the trans-scale micro-morpho-logical HCC pathology and facilitate quantitative data analysis and comprehensive *** results include some visualization features of PPCT-based tissue microenvironments,STXM-based cellular fine structures,and FTIR-based bio-macromolecular spectral characteris-tics during HCC tumor differentiation and *** proposed method provides multidimensional feature data support for constructing a high-accuracy machine learning algorithm based on a gray-level histogram,gray-gradient co-occurrence matrix,gray-level co-occurrence matrix,and back-propagation neural network ***-dimensional information analysis and diagnosis revealed the morphological pathways of HCC pathological evolution and we explored the relationships between HCC-related feature changes in inflammatory microenviron-ments,cellular metabolism,and the stretching vibration peaks of biomolecules of lipids,proteins,and nucleic ***,the proposed methodology has strong potential for the visualization of complex tumors and assessing the risks of tumor differentiation and metastasis.

关键词： Propagation based phase contrast tomography Soft X-ray microscopy Infrared micro spectroscopy Machine learning Tumor microenvironment and metastasis

Synthesis and application of bilayer-surfactant-enveloped Fe_3O_4 nanoparticles: water-based bilayer-surfactant-enveloped ferrofluids

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International Journal of Minerals,Metallurgy and Materials 2016年第2期23卷 234-240页

作者： Bai-yi Chen Jian-hui Qiu hui-xia Feng Department of Machine Intelligence and Systems Engineering Faculty of Systems Engineering Akita Prefectural University College of Petrochemical Technology Lanzhou University of Technology

Superparamagnetic carbon-coated Fe3O4 nanoparticles with high magnetization（85 emu·g-（-1）） and high crystallinity were synthesized using polyethylene glycol-4000（PEG（4000）） as a carbon ***3O4 water-based bilayer-surfactant-enveloped ferrofluids were subsequently prepared using sodium oleate and PEG（4000） as *** using X-ray photoelectron spectroscopy,X-ray diffraction,and Fourier-transform infrared spectroscopy indicate that the Fe3O4 nanoparticles with a bilayer surfactant coating retain the inverse spinel-type structure and are successfully coated with sodium oleate and PEG（4000）.Transmission electron microscopy,vibrating sample magnetometry,and particle-size analysis results indicate that the coated Fe3O4 nanoparticles also retain the good saturation magnetization of Fe3O4（79.6 emu·g^-1） and that the particle size of the bilayer-surfactant-enveloped Fe3O4 nanoparticles is 42.97 nm,which is substantially smaller than that of the unmodified Fe3O4 nanoparticles（486.2 nm）.UV-vis and zeta-potential analyses reveal that the ferrofluids does not agglomerate for 120 h at a concentration of 4 g·L^-1,which indicates that the ferrofluids are highly stable.

关键词： magnetic fluids iron oxides nanoparticles bilayers sodium oleate polyethylene glycol

Elevated serum growth differentiation factor 15 in multiple system atrophy patients:A case control study

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World Journal of Clinical Cases 2020年第12期8卷 2473-2483页

作者： Tao Yue hui Lu xiao-Mei Yao xia Du ling-ling Wang Dan-Dan Guo Yi-Ming Liu Department of Neurology Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012Shandong ProvinceChina Department of Gerontology Zibo Central HospitalZibo 255036Shandong ProvinceChina Department of Ophthalmology Zibo Central HospitalZibo 255036Shandong ProvinceChina Department of Gerontology Jinan Central HospitalCheeloo College of MedicineShandong UniversityJinan 250013Shandong ProvinceChina Department of Neurology Jinan Central Hospital Affiliated to Shandong UniversityJinan 250013Shandong ProvinceChina Department of Neurology Yantaishan HospitalYantai 264001Shandong ProvinceChina

BACKGROUND Multiple system atrophy(MSA) is a serious progressive neurodegenerative disease. Early diagnosis of MSA is very difficult, and diagnostic biomarkers are limited. Growth differentiation factor 15(GDF15) is involved in the differentiation and progression of the central nervous system, and is widely distributed in peripheral blood, which may be a novel biomarker for *** To determine serum GDF15 levels, related factors and their potential diagnostic value in MSA patients, compared with Parkinson’s disease(PD) patients and healthy *** A case-control study was conducted, including 49 MSA patients, 50 PD patients and 50 healthy controls. Serum GDF15 levels were measured by human enzymelinked immunosorbent assay, and the differences between the MSA, PD and control groups were analyzed. Further investigations were performed in different MSA subgroups according to age of onset, sex, clinical subtypes, diagnostic criteria, and disease duration. Receiver-operating characteristic curve analysiswas used to evaluate the diagnostic value of GDF15, especially for the differential diagnosis between MSA and *** Serum GDF15 levels were significantly higher in MSA patients than in PD patients and healthy controls(P = 0.000). Males and those with a disease duration of more than three years showed higher serum GDF15 levels(P = 0.043 and 0.000;respectively). Serum GDF15 levels may be a potential diagnostic biomarker for MSA patients compared with healthy controls and PD patients(cutoff: 470.42 pg/m L, sensitivity: 85.7%, specificity: 88.0%;cutoff: 1075.91 pg/m L, sensitivity:51.0%, specificity: 96.0%;respectively).CONCLUSION Serum GDF15 levels are significantly higher in MSA patients and provide suggestions on the etiology of MSA.

关键词： Multiple system atrophy Parkinson’s disease Serum growth differentiation factor 15 Biomarker Receiver-operating characteristic curve Neurodegenerative disease

Association of stent thrombectomy and conventional treatment with neuroprotection, complications, anxiety, and depression in acute ischemic stroke patients

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World Journal of Psychiatry 2025年第1期15卷 72-82页

作者： Kai-Jie Yang Jia-Jian Huang Cai-xia Xuan Department of Neurology Qinzhou Second People's HospitalQinzhou 535000Guangxi Zhuang Autonomous RegionChina

BACKGROUND Acute ischemic stroke(AIS)is an abrupt blood flow cessation to a specific brain region within a vascular zone,causing a subsequent decline in neurological *** thrombectomy is a recently established technique for treating *** provides the benefits of being a relatively simple and safe procedure,capable of partially enhancing a patient’s ***,some patients may experience endothelial damage and recurrent thrombosis,with clinical outcomes that are not always ***,the efficacy of this method remains *** To survey the association of stent thrombectomy vs standard treatment with neurological function protection,complications,and short-term prognosis in patients diagnosed with *** This study assigned 90 patients with AIS to the observation and control groups(n=45 patients)from December 2020 to December *** thrombectomy was conducted in the observation group,whereas routine treatment was provided to the control *** study assessed the therapeutic outcomes of two groups,including a comparison of their neurological function,living ability,anxiety and depression status,plaque area,serum inflammatory factors,serum Smur100βprotein,neuron-specific enolase(NSE),homocysteine(Hcy),and vascular endo-thelial ***,the incidence of complications was calculated and analyzed for each *** The total effective rate of treatment was 77.78%and 95.56%in the control and observation groups,*** 8 weeks of treatment,the scores on the National Institutes of Health Stroke Scale,Hamilton Anxiety Scale,and Hamilton Depression Scale decreased remarkably;the Barthel index increased remarkably,with better improvement effects of the scores in the observation group(P<0.05);total cholesterol,triglyceride,C-reactive protein,and plaque area lessened remarkably,with fewer patients in the observation group(P<0.05);S-100βprotein,NSE,and Hcy levels lessened remarkably,with fewer patients in

关键词： Stent thrombectomy Acute ischemic stroke Neurological function Complications Short-term prognosis