Showing 25,021 - 25,040 results of 25,938 for search '"R', query time: 0.16s Refine Results
  1. 25021

    Otolith annulus validation and population dynamics of dark sleeper Odontobutis potamophila: insights for sustainable fisheries management by Miao Xiang, Miao Xiang, Haoran Liu, Haoran Liu, Haoran Liu, Bo Li, Hongxi Guo, Chuankun Zhu, Man Wang, Man Wang, Jie Wang, Jie Wang, Songguang Xie, Songguang Xie, Lei Zhang, Lei Zhang

    Published 2025-01-01
    “…SLt=172.94/(1+e−0.458(t−0.79))(n=591, R2 = 0.622). Total mortality (Z), natural mortality (M), and fishing mortality (F) were computed as 1.69, 0.53, and 1.16/year, respectively. …”
    Get full text
    Article
  2. 25022

    An Interpretable Model for Salinity Inversion Assessment of the South Bank of the Yellow River Based on Optuna Hyperparameter Optimization and XGBoost by Xia Liu, Yu Hu, Xiang Li, Ruiqi Du, Youzhen Xiang, Fucang Zhang

    Published 2024-12-01
    “…The results showed that the XGBoost model fitted optimally, the test set had high R<sup>2</sup> (0.76) and the ratio of performance to deviation (2.05), and the estimation results were consistent with the measured salinity values. …”
    Get full text
    Article
  3. 25023
  4. 25024

    Insights into the contribution of multiple factors on Ixodes ricinus abundance across Europe spanning 20 years using different machine learning algorithms by Samantha Lansdell, Abin Zorto, Misaki Seto, Edessa Negera, Saeed Sharif, Sally Cutler

    Published 2025-01-01
    “…To assess which ML model was most suited to prediction of I. ricinus abundance, four performance metric values were calculated per model: Normalised Root Mean Square Error (NRMSE), Scatter Index (SI), Mean Absolute Percentage Error (MAPE) and R2, all of which describe the statistical relationship between predicted and actual I. ricinus abundance values. …”
    Get full text
    Article
  5. 25025
  6. 25026

    Characteristics and Differences in the Antler Velvet Microbiota During Regeneration by Yongxiang Li, Yuhang Zhu, Bo Yang, Shaochen Yu, Songze Li, André-Denis G. Wright, Rui Du, Huazhe Si, Zhipeng Li

    Published 2024-12-01
    “…In this study, we analyzed the antler velvet microbiota of sika deer at 15 days (Half) and 30 days (Full) post-pedicle casting using 16S rRNA gene sequencing. A total of 2659 OTUs were identified, which were assigned to 26 phyla, 304 families, and 684 genera. …”
    Get full text
    Article
  7. 25027

    Thurstonian Scaling for Sensory Discrimination Methods by Jian Bi, Carla Kuesten

    Published 2025-01-01
    “…The application and significance of Thurstonian scaling for sensory discrimination methods are discussed generally. R codes for estimations and tests for <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>d</mi><mo>′</mo></msup></semantics></math></inline-formula> values are provided in the paper.…”
    Get full text
    Article
  8. 25028

    Characterisation of internal tremors and vibration symptoms by Harlan M Krumholz, Mitsuaki Sawano, Richa Sharma, Tianna Zhou, Dorothy Massey, Anna D Baker, Diana Berrent Güthe, Nick Güthe, Suzanne Pincus Shidlovsky, Liza Fisher, Connor B Grady, Cesar Caraballo

    Published 2023-12-01
    “…Comments were analysed using Word Clouds, generated with R V.4.0.3 using quanteda, wordcloud and tm packages.Main outcome measures Patient-reported long COVID symptom themes and domains related to internal tremors and vibration.Results The respondents’ emails represented 22 themes and 7 domains pertaining to their experience with internal tremor and vibrations. …”
    Get full text
    Article
  9. 25029

    Understanding the clinical and molecular epidemiological characteristics of carbapenem-resistant Acinetobacter baumannii infections within intensive care units of three teaching ho... by Pengyu Zhang, Jingchen Hao, Yafen Zhang, Junfeng Su, Guozhuang Sun, Jun Xie, Jian Hu, Guocai Li

    Published 2025-01-01
    “…Meanwhile, most of the isolates carried virulence genes such as various ompA, csuA, csuB, csuC, csuD, abaI, abaR, lpxC, lpxA, and bmfRS. Single nucleotide polymorphism (SNP) analyses further indicated that the bacterial genome was progressively polymorphic with time. …”
    Get full text
    Article
  10. 25030

    Novel Indices of Glucose Homeostasis Derived from Principal Component Analysis: Application for Metabolic Assessment in Pregnancy by Tina Stopp, Michael Feichtinger, Ingo Rosicky, Gülen Yerlikaya-Schatten, Johannes Ott, Hans Christian Egarter, Christian Schatten, Wolfgang Eppel, Peter Husslein, Martina Mittlböck, Andrea Tura, Christian S. Göbl

    Published 2020-01-01
    “…PCS1 was positively associated with fasting and dynamic parameters of insulin sensitivity (Matsuda index: r=0.93, p<0.001), whereas a strong negative association was observed for early, late, and total insulin response. …”
    Get full text
    Article
  11. 25031

    Optimized Gross Primary Productivity Over the Croplands Within the BEPS Particle Filtering Data Assimilation System (BEPS_PF v1.0) by Xiuli Xing, Mousong Wu, Huajie Zhu, Wenzhuo Duan, Weimin Ju, Xiaorong Wang, Youhua Ran, Yongguang Zhang, Fei Jiang

    Published 2025-01-01
    “…With BEPS_PF DA, the average R2 between GPP and observed data at the hourly scale has been efficiently improved by 0.36 and root mean square error reduced by 0.18 gC m−2 hr−1. …”
    Get full text
    Article
  12. 25032

    Reverse-Phase Chromatographic Determination and Intrinsic Stability Behavior of 5-[(4-Chlorophenoxy)Methyl]-1,3,4-Oxadiazole-2-Thiol by Shehzadi Naureen, Hussain Khalid, Islam Muhammad, Bukhari Nadeem Irfan, Khan Muhammad Tanveer, Salman Muhammad, Siddiqui Sabahat Zahra, Rehman Aziz-Ur, Abbasi Muhammad Athar

    Published 2018-12-01
    “…Under alkaline conditions (hydrolytic and photolytic), polar products were formed that eluted very fast through the column (tR < 3.75 min). At room temperature, the compound was susceptible to oxidation by hydrogen peroxide and transition metals. …”
    Get full text
    Article
  13. 25033
  14. 25034

    Pre-Season Precipitation and Temperature Have a Larger Influence on Vegetation Productivity than That of the Growing Season in the Agro-Pastoral Ecotone in Northern China by Yuanyuan Zhang, Qingtao Wang, Xueyuan Zhang, Zecheng Guo, Xiaonan Guo, Changhui Ma, Baocheng Wei, Lei He

    Published 2025-01-01
    “…The ridge regression model explained 89.10% of the total variation (R<sup>2</sup> = 0.891). These findings not only emphasize the critical role of both historical and contemporary climate conditions in shaping vegetation growth but also provide valuable insights into how to adjust agricultural and animal husbandry management strategies to improve regional climate adaptation based on climate information from previous seasons in fragile regions.…”
    Get full text
    Article
  15. 25035

    Multidimension Analysis of the Prognostic Value, Immune Regulatory Function, and ceRNA Network of LY6E in Individuals with Colorectal Cancer by Ting Li, Weidong Liu, Chun Wang, Man Wang, Wenjia Hui, Jiajie Lu, Feng Gao

    Published 2022-01-01
    “…Then, we constructed a ceRNA network (LINC00963/miR-92a-3p/LY6E) and validated it using qRT-PCR. …”
    Get full text
    Article
  16. 25036

    Laser-induced breakdown spectroscopy applied to cattle compost for phosphorus quantification by Alberto Lencina, Gustavo Romagnoli, Andrea Alonso, Noelia Ramos, Cristian D’Angelo, Lina Lett, Silvia Mestelan

    Published 2022-09-01
    “…Almost 80% of the calibration fittings have an R2 ≥ 0.895. The mean validation error was less than 22% for about 80% of the calibrations, with a mean prediction error bound to 40%. …”
    Get full text
    Article
  17. 25037

    Correlation and clinical significance of placental tissue selectin (E), angiotensin II and its receptors, and oxidized lipid levels in patients with preeclampsia by Yan Gao, Guohong Wu, Haiting Huang, Xiaoyan Lu, Peifen Wu, Zou Suiyi, Zhenyan Liu

    Published 2025-01-01
    “…Pearson correlation showed that the expression levels of placental tissue selectin (E), AngII, ATRs, MDA, and 8-iso-PGF2a were positively correlated with SBP and DBP (r>0, P<0.05). The results of drawing the ROC curve showed that the AUCs of placental tissue selectin (E), AngII, ATRs, MDA, and 8-iso-PGF2a expression in predicting the occurrence of PE were 0.854, 0.756, 0.745, 0.885, 0.900, and 0.905 respectively. …”
    Get full text
    Article
  18. 25038

    Interspecific Competition Between <i>Eotetranychus sexmaculatus</i> Riley and <i>Oligonychus biharensis</i> Hirst (Acari: Tetranychidae) by Lijiu Zheng, Yong Zhang, Xia Shi, Wei Gan, Fangping Zhang, Yueguan Fu, Ya Liu, Junyu Chen, Zhengpei Ye

    Published 2025-01-01
    “…Across all treatments, the mean and peak values of the intrinsic rate of increase (r<sub>m</sub>) were greater in <i>O. biharensis</i> than in <i>E. sexmaculatus</i>. …”
    Get full text
    Article
  19. 25039

    The Frequency of <i>DPYD</i> c.557A>G in the Dominican Population and Its Association with African Ancestry by Mariela Guevara, Carla González de la Cruz, Fernanda Rodrigues-Soares, Ernesto Rodríguez, Caíque Manóchio, Eva Peñas-Lledó, Pedro Dorado, Adrián LLerena

    Published 2024-12-01
    “…Moreover, the frequency of this variant is positively associated with African ancestry (r<sup>2</sup> = 0.67, <i>p</i> = 1 × 10<sup>−7</sup>), which implies that individuals with high levels of African ancestry are more likely to present this variant. …”
    Get full text
    Article
  20. 25040