Showing 21,981 - 22,000 results of 25,938 for search '"R', query time: 0.14s Refine Results
  1. 21981

    Air Pollutant Levels during the Large-scale Social Restriction Period and its Association with Case Fatality Rate of COVID-19 by Muhammad Rendana

    Published 2021-03-01
    “…Furthermore, we found a positive association between PM10 and the case fatality rate of COVID-19 in the study area (r = 0.514, p < 0.05). Finally, this study concluded that the implementation of LSSR could reduce air pollutants concentration in the study area while a higher PM10 exposure could increase the risk of death from COVID-19. …”
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    Article
  2. 21982

    Gender Balance of University Professors: European Experience and Its Relevance for Russia by S. A. Baykov

    Published 2021-06-01
    “…Comparison of the specifics of the spheres of higher education in the studied countries: R&amp;D expenditures in the field of higher education and the working conditions of teachers (average salary, mobility, a specificity of contracts, hours worked, career opportunities) made it possible to identify the level of competition in universities. …”
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    Article
  3. 21983

    Effect of single and repeated waterlogging events on tropical forage grasses for cut and carry systems by Rowan W. Smith, Thi Mui Nguyen, Nguyen Xuan Ba, Nguyen Huu Van, Jeff P. Corfield, David Parsons

    Published 2025-01-01
    “…Jacobs, Urochloa hybrid ‘Mulato II’ and Urochloa ruziziensis (R. Germ. and C.M. Evrard) Crins. This information will assist in providing recommendations for smallholder farmers about which species to grow under repeated or continuous waterlogging.…”
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  4. 21984

    Effects of highland barley β-glucan on gut microbiota composition and metabolism in vitro fermentation by Yinchen Ge, Jiaci Liu, Huacheng Tang, Yanqing Zang, Yang Cao

    Published 2025-01-01
    “…Therefore, the effects of HBG on the gut microbiota during fermentation were analyzed by 16 s rRNA sequencing and untargeted metabolomics. The results showed that HBG could enrich microbial diversity, increase the abundance of beneficial bacteria, and inhibit the biology of pathogenic bacteria. …”
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  5. 21985

    Korisničke mogućnosti automatske telefonske centrale ASB-501 u funkciji interfonske centrale by Zdravko Majkić

    Published 1990-07-01
    “…U ovom članku opisane su neke od funkcija koje su prisutne u verziji softvera R.4. Neke od njih su bile u ranijim verzijama softvera, kao npr. mogućnost 'zaključivanja' DT, 'vanjski prati me', DPNSS signalizacija, i si. …”
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    Article
  6. 21986

    Small-holder Goat Farmer Profile Demographic-based on Financial Aspect in Majene Regency, West Sulawesi Province by Muhammad Iqbal Rivai, Tanrigiling Rasyid

    Published 2025-01-01
    “…This study aims to classify the demographic profile based on the R/C ratio value to identify groups of farmers who need special attention. …”
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    Article
  7. 21987

    Thermodynamics of Biosorption for Removal of Co(II) Ions by an Efficient and Ecofriendly Biosorbent (Saccharum bengalense): Kinetics and Isotherm Modeling by Muhammad Imran Din, Muhammad Latif Mirza, Sadia Ata, Makshoof Athar, Ijaz Ul Mohsin

    Published 2013-01-01
    “…Langmuir, Freundlich Timken, and Dubinin-Radushkevich (D-R) adsorption isotherms have been applied to further define the mechanism of sorption. …”
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    Article
  8. 21988

    Education for sustainable development: analyzing research trends in higher education for sustainable development goals through bibliometric analysis by Mestawot Beyene Tafese, Erika Kopp

    Published 2025-01-01
    “…After a thorough screening, 1013 articles met the eligibility criteria and were subsequently analyzed using the R-Studio software platform. The findings indicate a significant increase in scientific output in this area since 2018, peaking in 2022 and then declining in 2023. …”
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    Article
  9. 21989

    Stability-Indicating HPLC Determination of Trandolapril in Bulk Drug and Pharmaceutical Dosage Forms by Leena A. Al-Hawash, Ashok K. Shakya, Maher L. Saleem

    Published 2015-01-01
    “…The linearity of the method was excellent (r2>0.9999) over the concentration range of 1–24 μg/mL; the limit of detection (LOD) and limit of quantitation (LOQ) were 0.0566 μg/mL and 0.1715 μg/mL, respectively. …”
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  10. 21990

    A New Method to Measure Crack Extension in Nuclear Graphite Based on Digital Image Correlation by Shigang Lai, Li Shi, Alex Fok, Haiyan Li, Libin Sun, Zhengming Zhang

    Published 2017-01-01
    “…The load-crack extension curve, which is required for analyzing the R-curve and tension softening behaviors, was obtained for this material. …”
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    Article
  11. 21991

    Improving wheat yield prediction through variable selection using Support Vector Regression, Random Forest, and Extreme Gradient Boosting by Juan Carlos Moreno Sánchez, Héctor Gabriel Acosta Mesa, Adrián Trueba Espinosa, Sergio Ruiz Castilla, Farid García Lamont

    Published 2025-03-01
    “…This combination, analyzed through the XGBoost model, resulted in an exceptional performance, with an RMSE of 28.5082 (grams/square meter) and an R² of 0.9156, showing the constructive collaboration between these indicators. …”
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  12. 21992

    Air quality study in open-pit quarries in general Roca, argentina by Paula Andrea Paez, Marisa Gloria Cogliati, Raúl Alberto Giacosa

    Published 2017-12-01
    “…The results of the modeling (maximum hourly concentration values) were compared with aerosol concentration data, obtained by remote sensors; Resulting in a determination coefficient (R2 ~ 0.7). The proposed work methodology can be incorporated as a control tool in government agencies for the evaluation and management of air quality so as to prevent unsatisfactory scenarios.…”
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  13. 21993
  14. 21994

    Development of an Efficient Analytical Method for the Extraction and Analysis of Biocide Contents from the Textile Test Specimens on LC-DAD by Muhammad Jahangir, Uzman Khan

    Published 2020-01-01
    “…Pretreatment factors such as extraction solvent, extraction method, dilution ratio, and extraction time were optimized initially and plotted calibration curve showed regression (r2 ≥ 0.9995) in the range of 1.0–5.0 mg L−1. Recoveries were between 95% and 108% with the relative standard deviation ≤ 4%. …”
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    Article
  15. 21995
  16. 21996

    Correlation between risk factors that influence the development of children's language by Marianna Momoe Nanakuma Matsumoto, Heloisa Adhmann Ferreira, Isabelly Bueno Araujo, Daniela Cardilli-Dias, Daniela Regina Molini-Avejonas

    Published 2025-01-01
    “…The database was thoroughly analyzed using R software, and the most relevant risk factors were correlated through statistical analysis, generating altered and unaltered PDL results. …”
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    Article
  17. 21997

    A Survival Analysis on Fuel Cell Technology Patent Maintenance and Values Exploration between 1976 and 2001 by Seng-Su Tsang, Feng-Chen Chang, Wen-Cheng Wang

    Published 2015-01-01
    “…Fuel cell R&D activities desirably arrive in patents; the costly maintenance fee challenges managers as well as researchers to whether or not renew existing patents. …”
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    Article
  18. 21998

    Dysfunctional Attitudes in Alcohol Dependents: A Comparative Study by Görkem Karakas Ugurlu, Mustafa Uğurlu, Levent Turhan, M. Hakan Türkçapar

    Published 2012-07-01
    “…At the same time, alcohol dependent group was evaluated using Structured Clinical Interview for DSM-III-R-Axis-I and Axis-II (SCID I and II). The data was evaluated using SPSS 17. …”
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  19. 21999

    PROTOTYPE ALAT PENDETEKSI DAN PENGUSIR TIKUS PADA PEMBIBITAN KELAPA SAWIT BERBASIS ARDUINO UNO by Susi Tarwianti Endra Rukmana, Afrizal Mayub, Rosane Medriati

    Published 2019-04-01
    “…Kata kunci: sensor PIR, Arduio Uno, GSM SIM900A, Audio Generator, Research and Development (R&D)   …”
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    Article
  20. 22000

    Estudios biológicos de myzus persicae (sulzer) (hemiptera: aphididae) sobre rúcula (eruca sativa mill.) en condiciones de laboratorio by A. Andorno, C. Hernandez, E. Botto, S. Schultz, F. La Rossa

    Published 2007-01-01
    “…Se obtuvieron los siguientes resultados: período reproductivo (días): 14,6 (15 °C) y 9,7 (25 °C), longevidad (ninfa I - adulto) (días): 25,9 (15 °C) y 16,6 (25 ºC), tasa reproductiva neta (R0) (hembra.hembra-1.generación-1): 22,9 (15 ºC) y 19,3 (25 ºC), tasa intrínseca de crecimiento (rm) (hembra.hembra-1.día-1): 0,178 (15 ºC) y 0,269 (25 °C) y tiempo generacional (T) (días): 20,1 (15 ºC) y 12,4 (25 ºC). …”
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