Showing 141 - 160 results of 163 for search '"Multivariate statistics"', query time: 0.08s Refine Results
  1. 141

    Application of multivariate analysis to identify relationships among useful agronomic characters of cowpea and differentiation of cultivars for vegetable and grain uses by M. O. Burlyaeva, M. V. Gurkina, E. V. Miroshnichenko

    Published 2021-12-01
    “…The variability and relationships of these characters were assessed in cultivars grown for grain and vegetable purposes using multivariate statistical analyses.Results and discussion. The characters that differentiate grain and vegetable cowpea accessions were identified: the type of seed coat surface, the presence of fiber in ventral and dorsal pod sutures and a sclerenchyma layer in pods valves, and pod length. …”
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  2. 142

    Elevated Lipid Concentrations in Seminal Plasma Can Reduce Sperm Motility in Simmental Bulls by Zhuo Yang, Fang Luo, Chenglei Song, Zhiyuan Ma, Yucheng Tian, Yu Fu, Hao Zheng, Jinzhong Tao

    Published 2025-01-01
    “…Lipid profiles were determined using LC-MS/MS, and 40 differential lipids were identified by multivariate statistical analysis. Among them, 39 lipids were upregulated in the LSM group compared to the HSM group. …”
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  3. 143

    Enrichment features, ecological risks assessment and quantitative sources appointment of sediment heavy metals: An example of the urbanized Xizhi River catchment, South China by Chao Yan, Qirui Wu, Rui Li, Zuobing Liang, Zaizhi Yang, Aiping Zhu, Lei Gao

    Published 2025-01-01
    “…By integrating a traditional geochemical model and multivariate statistical analysis into a positive matrix factorization (PMF) method, we quantitatively identified the possible sources of HM contamination in the sediments. …”
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  4. 144

    The clinical value and most informative threshold of polygenic risk score in the Quebec City Case-Control Asthma Cohort by Martin Pariès, Stéphanie Bougeard, Aida Eslami, Zhonglin Li, Michel Laviolette, Louis-Philippe Boulet, Evelyne Vigneau, Yohan Bossé

    Published 2025-01-01
    “…This study aims to evaluate PRS and define most informative thresholds in relation to conventional clinical and physiological criteria of asthma using a multivariate statistical method. Clinical and genome-wide genotyping data were obtained from the Quebec City Case-Control Asthma Cohort (QCCCAC), which is an independent cohort from previous GWAS. …”
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  5. 145

    ‎ 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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  6. 146
  7. 147

    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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  8. 148

    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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  9. 149

    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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  10. 150

    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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  11. 151

    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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  12. 152
  13. 153

    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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  14. 154

    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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  15. 155

    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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  16. 156

    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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  17. 157

    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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  18. 158
  19. 159

    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. 160

    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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