Showing 981 - 1,000 results of 11,088 for search '"Chemical ', query time: 0.08s Refine Results
  1. 981

    Long-term impact of different prevalent cropping systems on soil physico-chemical characteristics under subtropical climate conditions of Punjab, Pakistan by Fahad Ali Fayyaz, Irfan Aziz, Muhammad Ansar, Muhammad Akmal, Saud Alamri, Alanoud T. Alfagham, Renata Gamrat, Abdul Qayyum

    Published 2025-01-01
    “…Therefore, the study was designed to assess and quantify soil physico-chemical characteristics, crop yield and economic feasibility of different cropping systems (CS), including groundnut-wheat (G-W), rice-wheat (R-W), fallow-gram/wheat (F-G/W), mix cropping (Mix C) and cotton-wheat (C-W). …”
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  2. 982

    Chemical Fingerprint and Metabolic Profile Analysis of Tianshu Tablets by Ultra-High Performance Liquid Chromatography/Quadrupole-Time of Flight Mass Spectrometry by Lin Chen, Renhao Chen, Hui Ouyang, Qi Wang, Zhifeng Li, Yulin Feng, Shilin Yang

    Published 2019-01-01
    “…In recent years, the chemical fingerprinting of traditional Chinese medicines and the metabolites in these compounds has been a hot topic. …”
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  3. 983

    The Role of PM2.5 Chemical Composition and Meteorology during High Pollution Periods at a Suburban Background Station in Southern Poland by Barbara Błaszczak, Natalia Zioła, Barbara Mathews, Krzysztof Klejnowski, Krzysztof Słaby

    Published 2020-08-01
    “…Samples were collected daily and analyzed for their chemical composition, specifically, the carbonaceous (elemental and organic carbon) and water-soluble ionic (Cl−, NO3−, SO42–, Na+, NH4+, K+, Ca2+ and Mg2+) components. …”
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  4. 984

    Identifying skin surface chemicals as potential tuberculosis diagnostic biomarkers using ultra performance liquid chromatography-high resolution mass spectrometry by Madelien Wooding, Kornelis van Pletzen, Yvette Naudé

    Published 2025-05-01
    “…A custom-designed wearable polydimethylsiloxane (PDMS) sampler was employed as a passive sampling device, effectively concentrating chemical compounds from the skin surface. The sampler was directly desorbed into solvent within an LC vial, streamlining the extraction-to-analysis process. …”
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  5. 985

    Performance evaluation of four cascade impactors for airborne ultrafine-particle (UFP) collection: the influence of particle type, concentration, mass, and chemical nature by E. Eckenberger, A. Mittereder, N. Gawlitta, N. Gawlitta, J. Schnelle-Kreis, J. Schnelle-Kreis, M. Sklorz, D. Brüggemann, R. Zimmermann, R. Zimmermann, A. C. Nölscher

    Published 2025-01-01
    “…As UFPs potentially impact human and environmental health, their chemical composition is of interest. However, their small mass presents challenges for sampling and chemical characterization methods. …”
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  6. 986

    Chemical Reactivity Properties, Solubilities, and Bioactivity Scores of Some Pigments Derived from Carotenoids of Marine Origin through Conceptual DFT Descriptors by Norma Flores-Holguín, Juan Frau, Daniel Glossman-Mitnik

    Published 2019-01-01
    “…All the chemical reactivity descriptors for the systems were calculated via conceptual density functional theory (CDFT). …”
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  7. 987
  8. 988

    Productivity and Chemical Parameters in the Bottom Soil of 1 and 3 years operated pond of Black Tiger Prawn Penaeus monodon Fab. Culture by Kukuh Nirmala, E. Yuniar, T. Budiardi

    Published 2007-01-01
    “… This study was carried out to observe the productivity and bottom soil chemical aspects of 1 year  and 3 years operated pond of black tiger prawn Penaeus monodon Fab. culture. …”
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  9. 989

    Research on Acetylene Sensing Properties and Mechanism of SnO2 Based Chemical Gas Sensor Decorated with Sm2O3 by Qu Zhou, Meiqing Cao, Wude Li, Chao Tang, Shiping Zhu

    Published 2015-01-01
    “…Pure and Sm2O3 decorated SnO2 sensing structures were synthesized by a facile hydrothermal method and characterized by XRD, FESEM, TEM, EDS, and XPS measurements, respectively. Planar chemical gas sensors with the synthesis samples were fabricated, and their sensing performances to C2H2 gas were systematically performed and automatically recorded by a CGS-1 TP intelligent gas sensing analysis system. …”
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  10. 990
  11. 991
  12. 992

    Evaluation of dietary coffee Coffee canephora husk supplementation on the growth, blood chemicals, and antioxidative activity of red Nile tilapia Oreochromis sp. by Azmi Afriansyah, Mia Setiawati, Muhammad Agus Suprayudi, Ichsan Achmad Fauzi

    Published 2023-01-01
    “…The results showed that dietary coffee husk powder supplementation treatments provide higher growth than control treatment. Based on blood chemicals, coffee husk-supplemented diets could enhance the HDL content and reduce cholesterol, triglycerides, and LDL (P<0.05). …”
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  13. 993
  14. 994
  15. 995

    Seasonal Variations in Chemical Composition and Antibacterial and Antioxidant Activities of <i>Rosmarinus officinalis</i> L.... by Ludovic Everard Bejenaru, Adina-Elena Segneanu, Cornelia Bejenaru, Andrei Biţă, Felicia Tuţulescu, Antonia Radu, Maria Viorica Ciocîlteu, George Dan Mogoşanu

    Published 2025-01-01
    “…Our study reports for the first time, over a 12-month period, the seasonal variations in chemical composition and antibacterial and antioxidant activity of <i>Rosmarinus officinalis</i> L. essential oil (RoEO) from Southwestern Romania (Oltenia region). …”
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  16. 996

    Sequestering of Fe and Pb ions from Wastewater by <i>Canarium schweinfurthii</i> after carbonization and chemical treatment: Isothermal and Kinetic Modeling by Bassey Uwem, Edjere Oghenekohwiroro, Otolo Solomon Ebiye

    Published 2016-05-01
    “…In this paper agricultural waste; Canarium schweinfurthii was explored for the sequestering of Fe and Pb  ions from wastewater solution after carbonization and chemical treatment at 400oC. Optimum time of 30 and 150 min with percentage removal of 95 and 98% at optimum pH of 2 and 6 was obtained for Fe and Pb ions. …”
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  17. 997

    Streptomyces sp. strain MUSC 5 from mangrove forest in Malaysia: Identification, antioxidant potential and chemical profiling of its methanolic extract by Hefa Mangzira Kemung, Loh Teng-Hern Tan, Kok-Gan Chan, Hooi-Leng Ser, Jodi Woan-Fei Law, Bey Hing Goh

    Published 2020-05-01
    “… The present study explored the antioxidant potential of a Streptomyces sp. strain MUSC 5 from the mangrove forest soil in the Pahang State, Peninsular of Malaysia and determined the presence of biologically active chemical constituents contained in the methanolic extract. …”
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  18. 998

    Nutrient Induced Type 2 and Chemical Induced Type 1 Experimental Diabetes Differently Modulate Gastric GLP-1 Receptor Expression by Olga Bloch, Efrat Broide, Gilad Ben-Yehudah, Dror Cantrell, Haim Shirin, Micha J. Rapoport

    Published 2015-01-01
    “…However, nutrient and chemical induced diabetes resulted in opposite alterations of glandular GLP-1R expression. …”
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  19. 999

    Chemical weathering as a tool for distinguishing river terraces of varying ages: a case study of the Qingyi River on the eastern Tibetan Plateau by Diwei Hua, Dawei Jiang, Shimin Zhang, Rui Ding, Yongqi Chen

    Published 2025-01-01
    “…It proved that the degree of chemical weathering indicated by major elements can be well applied to studying river terraces and reflect the weathering differences between terraces of different ages, solving the problem of quantitative terrace comparison. …”
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  20. 1000

    Chemical Reaction Effects on the Flow of Titanium Dioxide–Water in a Mixed Convective Nanofluid along an Inclined Plate in a Porous Medium by Md. Nasir Uddin, Kakali Chowdhury, Jannatul Ferdows Mim

    Published 2024-01-01
    “…A numerical analysis has been done to investigate the effects of chemical reactions on the considered nanofluid flow. …”
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