Showing 181 - 200 results of 204 for search '"multivariate statistics"', query time: 0.07s Refine Results
  1. 181

    ‎ Evaluation of spatial qualitative changes in surface water using cluster ‎analysis and factor analysis (Case study: the Aras river within the ‎boundaries of Iran)‎ by Mohammad Mostafa Shabarang‏, Ebrahim Fataei, Ali Akbar Imani, Hooman Bahmanpour, Mohammed ‏ Shabani‏

    Published 2024-11-01
    “…In this study, to assess the quality of the international Aras River, 16 parameters were analyzed at 19 stations with seasonal data collected over two years (2020 and 2021), and multivariate statistical analysis methods, including cluster analysis and factor analysis, were utilized. …”
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    Article
  2. 182

    NAFPD exacerbation by hyperlipidemia combined with hyperuricemia: a pilot rat experiment in lipidomics by Jingyun Li, Jingyun Li, Yongjian Chen, Shilin Li, Guorong Lyu, Guorong Lyu, Furong Yan, Jiajing Guo, Jing Cheng, Yun Chen, Jiaojiao Lin, Yating Zeng

    Published 2025-01-01
    “…Serum samples were analyzed using lipidomics technology, and multivariate statistical analysis was employed to identify differences in lipid metabolism.ResultsSUA levels in the PO group were not significantly different from those in the CON group (p > 0.05). …”
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  3. 183

    Evaluation of genetic differences between two autochthonous Spanish cattle breeds by Paola E. Milia, Alberto Cesarani, Clara Diaz, Cristina Meneses, Juan Carlos Parejo, Laura Falchi, Nicolò P. P. Macciotta, Corrado Dimauro

    Published 2025-12-01
    “…Genetic diversity was assessed in five subpopulations (Negra-MORB and Cárdena-MORC for Morucha breed; Jarda-JAR, Bociblanca-BOC, and Avileña-Negra Ibérica breed-ANI for Avileña Negra Ibérica main breed) belonging to two local Spanish cattle breeds (Avileña Negra Ibérica-AVI and Morucha-MOR) by using univariate and multivariate statistical approaches. A total of 4,137 animals (2,785 ANI, 333 BOC, 127 JAR, 263 MORB and 629 MORC) were genotyped with the Affymetrix Beadchip Microarray HD. …”
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  4. 184
  5. 185

    Tear metabolomics reveals novel potential biomarkers in epithelial herpes simplex keratitis by Jinyu Zhang, Zhenning Wu, Yangqi Zhang, Kaili Wu, Xiaoyi Li, Shiyou Zhou

    Published 2025-01-01
    “…Metabolic differences between HSK and control group were determined using multivariate statistical analysis. Results A total of 329 metabolites were identified, of which 18 were significantly altered in HSK patients. …”
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  6. 186

    Development of the algal pigment-based salinity transfer function for lakes on the Tibetan Plateau and evaluation of the quantitative reconstruction by Xinyao Sun, Qi Lin, Chenliang Du, Shixin Huang, Ke Zhang, Ji Shen

    Published 2025-01-01
    “…Here, the relationship between water environmental variables and surface sediment pigment assemblage identified by high-performance liquid chromatography (HPLC) covering 95 Tibetan lake sampling sites was investigated based on multivariate statistical analysis. Salinity was considered as the most important factor determining the distribution pattern of pigment assemblage, and pigment concentrations differed significantly along the lake salinity gradient. …”
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  7. 187

    Comprehensive Metabolomic Profiling in Adults with X-Linked Hypophosphatemia: A Case-Control Study by Luis Carlos López-Romero, José Jesús Broseta, Marta Roca-Marugán, Noemí Máñez Ramírez, Julio Hernández-Jaras

    Published 2024-12-01
    “…We employed multivariate statistical models, including a principal component analysis (PCA) and an orthogonal partial least squares discriminant analysis (OPLS-DA) regression model. …”
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  8. 188

    Longitudinal non-targeted metabolomic profiling of urine samples for monitoring of kidney transplantation patients by Ihsan Yozgat, Ulkem Cakır, Muhittin Abdulkadir Serdar, Sevgi Sahin, Osman Ugur Sezerman, Emirhan Nemutlu, Ahmet Tarik Baykal, Mustafa Serteser

    Published 2024-12-01
    “…Univariate and multivariate statistical analyses were employed to identify significant differences between the two groups. …”
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  9. 189
  10. 190

    Tracheostomies for respiratory failure are associated with a high inpatient mortality: a potential trigger to reconsider goals of care by Mackenzie Cook, Cameron Colbert, Aaron D Streblow, Scott P Sherry, Konrad Dobbertin

    Published 2024-10-01
    “…Patient information was collected and comparisons made with univariable and multivariable statistics.Results Of the 177 patients who underwent a tracheostomy for respiratory failure, 45% were women, median age was 63 (51–71) years. …”
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  11. 191

    Analysis of Flavor Differences in Yak Milk Powder at Different Milk Production Stages by Headspace Solid-Phase Microextraction and Gas Chromatography–Mass Spectrometry by Diandian Wang, Yaxi Zhou, Jian Zhao, Yu Guo, Wenjie Yan

    Published 2025-01-01
    “…This study identified and analyzed the volatile compounds in freeze-dried colostrum powder (YCSP), freeze-dried mature milk powder (YMMP), and freeze-dried ending milk powder (YEMP) using headspace solid-phase microextraction combined with gas chromatography–mass spectrometry (HS-SPME-GC-MS) and multivariate statistical analysis. A total of 48 volatile compounds were identified, with significant differences in the types and contents of these compounds across the three samples. …”
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  12. 192

    Groundwater quality and associated health risks in the Eastern Region of Ghana by Thomas Acquah, Miriam Appiah-Brempong, Geophrey Kwame Anornu

    Published 2025-01-01
    “…In achieving this, the water quality of 136 boreholes in the region was evaluated through Water Quality Index (WQI) and Groundwater Pollution Index (GPI) analyses. Multivariate statistical procedures, namely, principal component and correlation analyses were employed to define the major groundwater pollutants and their possible sources. …”
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  13. 193

    Assessment of heavy metal pollution and spatial distribution in waterfalls of Chattogram district, Bangladesh: Implications for drinking and irrigation purposes by Abdur Rouf Azad, Md. Rezaul Karim, Md. Refat Jahan Rakib, Md. Ripaj Uddin

    Published 2025-04-01
    “…Heavy Metal Pollution Indices (HPIs) and multivariate statistical models (PCA, CA, and Pearson correlation) were applied to evaluate spatial-temporal variations, distribution, and pollution sources. …”
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  14. 194

    Diversity and seasonal variation of zooplankton community in a large deep-water reservoir of Eastern China using eDNA and morphological methods by Lei Hao, Lei Hao, Xinting Xu, Xinting Xu, Yan Zhou, Yan Zhou, Dan Liu, Dan Liu, Jianqiang Shao, Jiayong Pan, Guangxi He, Zhongjun Hu, Zhongjun Hu, Qigen Liu, Qigen Liu

    Published 2025-01-01
    “…Non-metric multidimensional scaling (NMDS) analysis and nonparametric multivariate statistical tests revealed that both abundance and biomass species compositions determined by microscopy differed significantly from those based on eDNA reads. …”
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  15. 195

    Tracing the origins and transformations of fluorescence dissolved organic matter within western and eastern Greenland’s shelves: a comparative study by Monika Zabłocka, Piotr Kowalczuk, Joanna Stoń-Egiert, Elena Terzić, Elena Terzić, Evanthia Bournaka, Artur P. Palacz

    Published 2025-01-01
    “…To investigate these dynamics, we assessed FDOM by an application of multivariate statistical method - Parallel Factor Analysis (PARAFAC) on samples collected in July 2021 and August 2022. …”
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  16. 196

    Comparative Analysis of Effects of Different Raw Materials on Flavour Quality of Scallion Oil Based on HS-SPME-GC-MS by Meng ZHANG, Peng WANG, Jingzhang GENG, Ping ZHAN, Honglei TIAN

    Published 2025-01-01
    “…Furthermore, multivariate statistical analysis was conducted to identify key compounds contributing to variations in sensory attributes among the three types of scallion oils. …”
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  17. 197

    Ecological analysis of plant community structure and soil effects in subtropical forest ecosystem by Sehrish Sadia, Muhammad Waheed, Shazia Firdous, Fahim Arshad, Beatrice Ambo Fonge, Abeer Al-Andal

    Published 2024-12-01
    “…Soil samples were collected and analyzed for key physicochemical parameters, while multivariate statistical methods, including hierarchical clustering and ordination, were applied to examine the relationships between vegetation structure and environmental factors. …”
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  18. 198
  19. 199

    Differences in Metabolites of Different Varieties from Xinjiang Large-fruit Sea Buckthorn as Analyzed by Non-targeted Metabolomics by Rong HAN, Yan MA, Shengjie LI, Xintao MENG, Mingqiang XU, Ting ZHANG, Yan PAN

    Published 2025-02-01
    “…This experiment aimed to investigate the differences in metabolites of different varieties from Xinjiang large-fruit sea buckthorn, ultra high performance liquid chromatography-mass spectrometry (UPLC-QTOF-MS) coupled with multivariate statistical analysis and pathway enrichment analysis were used to characterize the metabolites of six Xinjiang large-fruit sea buckthorn species ('Mixed Fruit', 'Giant', 'Shenqunhon', 'Wucifeng', 'Xiangyang' and 'Zhuangyuan Yellow') were subjected to non-targeted metabolomics study. …”
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  20. 200

    Seasonal Dynamics of Sand Flies (Diptera, Pshycodidae), Vectors of Cutaneous Leishmaniasis, in the City of Fez, Northern Morocco by Najoua Darkaoui, Abdellatif Janati Idrissi, Fatima Zahra Talbi, Youness El Fattouhi, Hajar El Omari, Mohamed Najy, Abdelkarim Taam, Abdellatif Alami, Fouad El-Akhal, Abdelhakim El Ouali Lalami

    Published 2022-01-01
    “…The monthly impact of Fez sand fly density has been studied using all multivariate statistical analyses, including multiple factor correspondence analysis (MCA), which were performed using XLSTAT and the version of SPSS 20.0 test. …”
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