Showing 5,521 - 5,540 results of 5,544 for search '"Nonlinearity"', query time: 0.06s Refine Results
  1. 5521

    Association Between Liver Fibrosis and Risk of Incident Stroke and Mortality: A Large Prospective Cohort Study by Zijie Wang, Zhitao Gong, Jianshang Wen, Shanyu Zhang, Xiao Hu, Wenliang Guo, Yanghua Tian, Qi Li

    Published 2025-02-01
    “…Restricted cubic spline analysis showed nonlinear associations of the Fibrosis‐4 index and aspartate aminotransferase to platelet ratio index with stroke incidence and all‐cause death. …”
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    Article
  2. 5522

    Impact of Methotrexate and 7‐Hydroxymethotrexate Exposure on Renal Toxicity in Pediatric Non‐Hodgkin Lymphoma by Hao Bing, Yi Ma, Jiamin Xu, Qixian Ling, Yanlong Duan, Libo Zhao

    Published 2025-01-01
    “…Plasma MTX and 7‐OHMTX concentrations were determined using a high‐performance liquid chromatography tandem mass spectrometry (HPLC–MS/MS) method. A nonlinear mixed effect model approach was used to build a joint population pharmacokinetic (PopPK) model. …”
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  3. 5523

    Short-term effects of combined environmental factors on respiratory disease mortality in Qingdao city: A time-series investigation. by Xin Zhang, Zijian Xi, Min Yang, Xiuqin Zhang, Ruikai Wu, Shuang Li, Lu Pan, Yuan Fang, Peng Lv, Yan Ma, Haiping Duan, Bingling Wang, Kunzheng Lv

    Published 2025-01-01
    “…The distributed-lag nonlinear model and generalized additivity model were used to assess the association between daily mean temperature (DMT), air pollutant exposure and RD mortality. …”
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    Article
  4. 5524

    Association between sex steroid hormones and α-klotho: Results from the NHANES 2013-2016 and Mendelian randomization study by Andong Guo, Pengcheng Chen, Jishuang Cao, Chenrui Wu, Sentai Ding

    Published 2025-03-01
    “…Results: In men, significant positive correlations with α-Klotho were consistent across both unadjusted and fully adjusted models for total testosterone (TT), bio-available testosterone (Bio-T), estradiol (E2) and sex hormone-binding globulin (SHBG) (Model 3: TT: β = 3.54, 95 % CI: 1.63–5.44, P = 0.0003; Bio-T: β = 1.74, 95 % CI: 0.73–2.74, P = 0.0007; E2: β = 0.25, 95 % CI: 0.11–0.38, P = 0.0003; SHBG: β = 0.95, 95 % CI: 0.63–1.27, P < 0.0001); In premenopausal women, we detected a potential nonlinear relationship between TT levels and α-Klotho, with α-Klotho levels rising to a peak at a TT level of 72.2 ng/mL, after which they declined. …”
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  5. 5525

    Association Between Triglyceride–Glucose Index and Carotid Plaque Stability in Different Glycemic Status: A Single‐Center Retrospective Study by Guijun Huo, Jin Zheng, Junjie Cao, Lili Zhang, Zhichao Yao, Yuqi Zeng, Yao Tang, Zhanao Liu, Ziyi Tan, Dayong Zhou

    Published 2025-02-01
    “…The restrictive cubic spline analysis indicated a nonlinear relationship between the TyG index and unstable carotid plaque, with TyG index >8.63 identified as an independent risk factor for unstable carotid plaque. …”
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    Article
  6. 5526

    A dual-band microwave sensor for glucose measurements utilizing an enclosed split ring metamaterial-based array by Abhishek Kandwal, Ziheng Ju, Louis W.Y. Liu, Rohit Jasrotia, Choon Kit Chan, Zedong Nie, Ali M. Almuhlafi, Hamsakutty Vettikalladi

    Published 2025-02-01
    “…At 9.2 GHz, there was no significant resonant frequency shift with varying glucose concentrations, but the magnitude of the reflection coefficient changed with the glucose concentration nonlinearly in an amount-dependent manner, with a sensitivity of 16.6 dB per unit glucose concentration within the clinical diabetic range. …”
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    Article
  7. 5527

    Linear association between high-sensitivity C-reactive protein and postoperative delirium after general anesthesia: a cross-sectional study by Xiao Qin, Junming Ren, Chunping Xing, Lijiao Chen, Renjie Wang, Shouyuan Tian

    Published 2025-01-01
    “…Additionally, RCS analysis indicated a linear positive association between Log10Hs-CRP and POD risk (p = 0.003, nonlinear p = 0.896).ConclusionElevated Hs-CRP levels are significantly associated with an increased risk of POD following general anesthesia.…”
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  8. 5528

    Cross-sectional and longitudinal associations between serum vitamin D and continuous metabolic syndrome score among children and adolescents: roles of levels of inflammation in per... by Yanyan Li, Zhuang Ma, Yan Li, Ting Xiong, Ziyang Zhang, Bingxuan Kong, Wenlong Lu, Xiu Zhao, Rongfei Zheng, Yuhan Tang, Ping Yao, Zhe Su, Yuanjue Wu, Jingfan Xiong

    Published 2025-01-01
    “…Results The RCS indicated a negative linear association between serum 25(OH)D levels and CMSRS (P-overall = 0.0066, P-nonlinear = 0.1393). GLM revealed that compared to Q1, with the quartiles of serum 25(OH)D concentrations increase, the β value ranged from 0.028 (95% CI: − 0.093, 0.037) to 0.001(95%CI: − 0.067, 0.069), and then to -0.074 (95%CI: -0.146, -0.003, P for trend = 0.0659). …”
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  9. 5529

    Evaluación de la capacidad de resistencia al fuego de una estructura de hormigón armado tras un terremoto = Post-earthquake fire capacity assesment of a reinforced concrete frame by Ismail Haouach, Belkacem Lamri, Abdelhak Kada

    Published 2022-12-01
    “…The damaged frame will be subjected to high temperatures due to fire and numerically analysed using ANSYS APDL software including material and geometric nonlinearities. The results show that when a structure, previously damaged by seismic action, is exposed to a post-earthquake fire, its vulnerability is influenced compared to that of the structure exposed to fire alone. …”
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  10. 5530

    Advances in machine learning applications to resource technology for organic solid waste by Hongzhi MA, Yichan LIU, Jihua ZHAO, Fan FEI, Ming GAO, Qunhui WANG

    Published 2025-03-01
    “…ANN, for example, is particularly useful for complex, nonlinear relationships within biological treatment processes, while SVM is effective for small datasets and high-dimensional data. …”
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    Article
  11. 5531

    Correlation between meteorological variables, air quality, and the Coronavirus-19 pandemic events by M. Gidarjati, T. Matsumoto

    Published 2024-10-01
    “…Conversely, a negative linear correlation was observed between carbon monoxide and ozone levels. Nonlinear correlations also existed between various pollutants. …”
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    Article
  12. 5532

    A Dynamic Adaptive Ensemble Learning Framework for Noninvasive Mild Cognitive Impairment Detection: Development and Validation Study by Aoyu Li, Jingwen Li, Yishan Hu, Yan Geng, Yan Qiang, Juanjuan Zhao

    Published 2025-01-01
    “…The collected data underwent rigorous preprocessing, during which features in the time, frequency, and nonlinear domains were extracted from individual physiological signals. …”
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    Article
  13. 5533

    Ethnic and racial discrimination in maternal health care in Mexico: a neglected challenge in the search for universal health coverage by Edson Serván-Mori, Sergio Meneses-Navarro, Rocío García-Díaz, Diego Cerecero-García, David Contreras-Loya, Octavio Gómez-Dantés, Arachu Castro

    Published 2025-01-01
    “…We used the Blinder-Oaxaca decomposition for nonlinear regression models to quantify inequities in ECMH due to ethnic-racial discrimination, defined as differences in outcomes attributable to differential treatment. …”
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  14. 5534

    Association of dietary quality and mortality in the non-alcoholic fatty liver disease and advanced fibrosis populations: NHANES 2005–2018 by Xingyong Huang, Xiaoyue Zhang, Xuanyu Hao, Tingting Wang, Peng Wu, Lufan Shen, Yuanyuan Yang, Wenyu Wan, Wenyu Wan, Wenyu Wan, Kai Zhang

    Published 2025-01-01
    “…After a median follow-up of 89 months, it was found that higher scores on the aMED (HR 0.814, 95% CI 0.681–0.972), HEI-2020 (HR 0.984, 95% CI 0.972–0.997), DASH (HR 0.930, 95% CI 0.883–0.979), and AHEI (HR 0.980, 95% CI 0.966–0.995) were associated with lower mortality risks, while DII scores (HR 1.280, 95% CI 1.098–1.493) indicated an increased risk of mortality. Additionally, a nonlinear relationship was identified solely between AHEI scores and all-cause mortality in NAFLD patients. …”
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    Article
  15. 5535

    Analyzing power errors in the optical pumping system of atomic spin comagnetometers by Jiale QUAN, Ye LIU, Longyan MA, Wenfeng FAN, Wei QUAN

    Published 2025-03-01
    “…To address this gap, this study simplified the nonlinear dynamics of the K–Rb–21Ne SERF comagnetometer into a linear time-invariant system using Taylor expansion. …”
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    Article
  16. 5536

    The impact of E × B shear on microtearing based transport in spherical tokamaks by B.S. Patel, M.R. Hardman, D. Kennedy, M. Giacomin, D. Dickinson, C.M. Roach

    Published 2025-01-01
    “…Understanding how these and other electromagnetic modes nonlinearly saturate is likely critical in understanding the confinement of a high β ST. …”
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    Article
  17. 5537

    Optimization of the Screw Conveyor Device Based on a GA-BP Neural Network by Qiang Guo, Yunpeng Zhuang, Houzhuo Xu, Wei Li, Haitao Li, Zhidong Wu

    Published 2025-01-01
    “…In this paper, we analyze the force and velocity components acting on the straw, give the design principles for the screw’s conveying parameters under the premise of ensuring maximum conveying capacity and minimum power consumption, and determine the optimal design variables, objective functions, and constraints according to the specific optimization problem; we establish a specific mathematical model, and introduce algorithm optimization for nonlinear problems with many variables and large amounts of calculations. …”
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    Article
  18. 5538

    Assessment of platelet-to-white blood cell ratio on short-term mortality events in patients hospitalized with acute decompensated heart failure: evidence from a cohort study from J... by Xin Huang, Xin Huang, Xin Huang, Xin Huang, Maobin Kuang, Maobin Kuang, Maobin Kuang, Maobin Kuang, Jiajun Qiu, Jiajun Qiu, Jiajun Qiu, Jiajun Qiu, Chao Wang, Chao Wang, Chao Wang, Chao Wang, Guotai Sheng, Guotai Sheng, Yang Zou, Guobo Xie

    Published 2025-02-01
    “…Restricted cubic spline regression demonstrated an L-shaped association between PWR and 30-day mortality risk (p for nonlinear = 0.038). Further threshold analysis revealed a threshold point for PWR at 15.88, where a decrease in PWR below this threshold was significantly associated with increased risk of all-cause mortality (p for log-likelihood ratio test = 0.046). …”
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    Article
  19. 5539

    Development and validation of an explainable machine learning model for mortality prediction among patients with infected pancreatic necrosisResearch in context by Caihong Ning, Hui Ouyang, Jie Xiao, Di Wu, Zefang Sun, Baiqi Liu, Dingcheng Shen, Xiaoyue Hong, Chiayan Lin, Jiarong Li, Lu Chen, Shuai Zhu, Xinying Li, Fada Xia, Gengwen Huang

    Published 2025-02-01
    “…Furthermore, SHAP algorithm revealed insightful nonlinear interactive associations between important predictors and mortality, identifying 9 features pairs with high interaction SHAP value and clinical significance. …”
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    Article
  20. 5540

    Relationship between changes in the triglyceride glucose-body mass index and frail development trajectory and incidence in middle-aged and elderly individuals: a national cohort st... by Kai Guo, Qi Wang, Lin Zhang, Rui Qiao, Yujia Huo, Lipeng Jing, Xiaowan Wang, Zixuan Song, Siyu Li, Jinming Zhang, Yanfang Yang, Jinli Mahe, Zhengran Liu

    Published 2024-08-01
    “…Logistic and Cox regression models were used to analyse the associations between the TyG-BMI and FI trajectory and frail incidence. Nonlinear relationships were explored using restricted cubic splines, and a linear mixed-effects model was used to evaluate FI development speed. …”
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    Article