Showing 7,941 - 7,960 results of 11,088 for search '"chemical"', query time: 0.10s Refine Results
  1. 7941

    An In Silico Approach for Evaluating a Fraction-Based, Risk Assessment Method for Total Petroleum Hydrocarbon Mixtures by Nina Ching Y. Wang, Glenn E. Rice, Linda K. Teuschler, Joan Colman, Raymond S. H. Yang

    Published 2012-01-01
    “…Both organizations defined TPH fractions based on their expected environmental fate and by analytical chemical methods. They derived toxicity values for selected compounds within each fraction and used these as surrogates to assess hazard or risk of exposure to the whole fractions. …”
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  2. 7942

    The Synergistic Effect of Nitrogen Dopant and Calcination Temperature on the Visible-Light-Induced Photoactivity of N-Doped TiO2 by Yao-Tung Lin, Chih-Huang Weng, Hui-Jan Hsu, Yu-Hao Lin, Ching-Chang Shiesh

    Published 2013-01-01
    “…The phase and structure, chemical state, optical properties, and surface area/pore distribution of N-doped TiO2 were characterized using X-ray diffraction spectrometer, high-resolution transmission electron microscope, X-ray photoelectron spectroscopy, UV-vis diffusion reflectance spectroscopy, and Brunauer-Emmett-Teller specific surface area. …”
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  3. 7943
  4. 7944
  5. 7945

    Dynamic Metasomatism: Stable Isotopes, Fluid Evolution, and Deformation of Albitite and Scapolite Metagabbro (Bamble Lithotectonic Domain, South Norway) by Ane K. Engvik, Heinrich Taubald, Arne Solli, Tor Grenne, Håkon Austrheim

    Published 2018-01-01
    “…Scapolitisation and albitisation led to contrasting chemical evolution with respect to elements like P, Ti, V, Fe, and halogens. …”
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  6. 7946
  7. 7947

    Preparation of Ginsenoside Rg3 and Protection against H2O2-Induced Oxidative Stress in Human Neuroblastoma SK-N-SH Cells by Gang Li, Xiao-xiao Zhang, Lin Lin, Xiao-ning Liu, Cheng-jun Ma, Ji Li, Chi-bo Wang

    Published 2014-01-01
    “…The aim of this study is to evaluate the protection of ginsenoside Rg3 against oxidative stress in human neuroblastoma SK-N-SH cells. 20(R)-ginsenoside Rg3 (20(R)-Rg3) and 20(S)-ginsenoside Rg3 (20(S)-Rg3) were prepared by the method of chemical degradation and column chromatography, and the structure of the two compounds was characterized by 1H-NMR and 13C-NMR spectroscopy. …”
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  8. 7948

    A Denoising Based Autoassociative Model for Robust Sensor Monitoring in Nuclear Power Plants by Ahmad Shaheryar, Xu-Cheng Yin, Hong-Wei Hao, Hazrat Ali, Khalid Iqbal

    Published 2016-01-01
    “…Sensors health monitoring is essentially important for reliable functioning of safety-critical chemical and nuclear power plants. Autoassociative neural network (AANN) based empirical sensor models have widely been reported for sensor calibration monitoring. …”
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  9. 7949

    Antioxidant Activity of Bioactive Compounds in the Ethyl Acetate Extract of Putat Leaves (Planchonia valida) by Nelson, Desy Vania Silaban, Faizar Farid, Ratih Dyah Puspitasari, Indra Lasmana Tarigan, Ilham Ifandi Ramadhan, Madyawati Latief

    Published 2022-12-01
    “…This identifies that the putat plant contains chemical compounds that potentially have antioxidant activity. …”
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  10. 7950
  11. 7951

    Antarctic Toothfish <i>Dissostichus mawsoni</i> in the South Orkney Islands: Using Otolith Chemistry to Test Current Hypotheses About Nursery Areas and Demographic Units by Paulina Carimán, Edwin J. Niklitschek, Cristóbal Garcés, Mathieu Leisen, Fernando Barra, Rurik Romero

    Published 2024-12-01
    “…Potential nursery habitats were geo-located by comparing observed and expected δ<sup>18</sup>O values. Chemical differences between the nuclear and marginal regions indicated ontogenetic migrations to deeper offshore habitats, suggesting a distinct habitat shift between 11 and 13 years of life. …”
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  12. 7952

    Regional environmental impacts on growth traits and phytochemical profiles of Glycyrrhiza glabra L. for enhanced medicinal and industrial use by Ghasem Eghlima, Yasaman Mashhadi Tafreshi, Fateme Aghamir, Hamid Ahadi, Mehrnaz Hatami

    Published 2025-01-01
    “…The findings revealed that the location where the plants were grown significantly influenced their physical and chemical characteristics. The Kalat region produced the tallest plants, measuring 96.86 cm, along with the highest shoot dry weight at 205.17 g, root dry weight of 318.00 g, root yield of 1590.12 g/m², and glabridin content of 2.92 mg/g dry weight (DW). …”
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  13. 7953

    A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching by Sadeq M. Al-Hazmy, Jameelah Al-Harby, Mohammed Hassan, Sabri Messaoudi, Ibrahim A. Alhagri, Ahmed N. Alhakimi

    Published 2023-01-01
    “…There is good compatibility between the calculated and measured values of many photophysical parameters. DBDMA has a low chemical quantum yield in solvents of different polarities, and the fluorescence quantum yield is high enough, which confirms, together with the low values of the excited state lifetime, its efficiency as laser emitting dye in the range of wavelength emission maxima. …”
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  14. 7954

    Research on the oxidation sequence of Ni-Al-Pt alloy by combining experiments and thermodynamic calculations by Na Ta, Lijun Zhang, Qin Li

    Published 2024-11-01
    “…The discussion was expanded to include the effects of chemical concentrations on the degradation mechanism of thermally grown oxide layers during oxidation at 1373 K. …”
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  15. 7955

    The Combined Effect of the Initial Cure and the Type of Cement on the Natural Carbonation, the Portlandite Content, and Nonevaporable Water in Blended Cement by Saida Boualleg, Mohamed Bencheikh, Larbi Belagraa, Aziz Daoudi, Mohamed Aziz Chikouche

    Published 2017-01-01
    “…The aim of this work is to better understand the physical and chemical phenomena involved in hydrated mix (clinker + addition) during the natural carbonation process, to characterize cement with supplementary cementitious materials (SCMs) under various curing environment. …”
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  16. 7956

    Application of environmental bacteria as potential methods of azo dye degradation systems by G. Manjarrez Paba, R. Baldiris Ávila, D. Baena Baldiris

    Published 2021-01-01
    “…<br /> <strong>CONCLUSION:</strong> Traditional strategies for the treatment of effluents contaminated with azo dyes are limited to physical and chemical processes that have a high energy and economic cost. …”
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  17. 7957

    Harnessing Biochar for Sustainable Horticulture: Strategies to Cope with Abiotic Stress by Matteo Lentini, Michele Ciriello, Youssef Rouphael, Emanuela Campana, Francesco Primo Vaccari, Stefania De Pascale

    Published 2025-01-01
    “…The main mechanisms highlighted by this literature review are improvement in soil aeration and water-holding capacity, microbial activity, and nutritional status of soil and plants, as well as alterations in some important soil chemical properties. This in-depth review of the literature highlights how the interaction between biochar types, dose, crop species, and growing conditions (optimal or nonoptimal) result in nonunique responses. …”
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  18. 7958

    Microbial Control in the Processing of Low-Temperature Meat Products: Non-Thermal Sterilization and Natural Antimicrobials by Xiaoyang Zhang, Feng Na, Min Zhang, Wei Yang

    Published 2025-01-01
    “…In response to the limitations of conventional preservation methods, such as heat treatment and chemical bacteriostats, emerging preservation technologies are increasingly being adopted. …”
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  19. 7959

    Influence of environmental factors on phytochemical compositions and antioxidant activity of Juniperus communis L by Purnima Rawat, Khashti Dasila, Mithilesh Singh, Jagdish Chandra Kuniyal

    Published 2025-02-01
    “…In conclusion, elevation significantly influences the extraction yield, chlorophyll content, total polyphenol content, antioxidant activity, and chemical composition of the extracts.Soil properties, such as pH, moisture content, and nutrient availability, also played a role in these variations. …”
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  20. 7960

    Micro-Characterization of Indoor Deposited Particles Using FTIR, SEM-EDS, and XRD Techniques: A Case Study of a University Campus, Bangladesh by Mamun Mahmud, Kazi ABM Mohiuddin

    Published 2024-03-01
    “…The morphological analysis by SEM depicted the shape of indoor particles as angular, micro-flake, cubic, and irregular with the major chemical compositions of C, O, Al, Si, Ca, Na, Fe, and Mg of which Si and Fe were dominant in CEC and CEL sites which most likely originated from construction activities and dust from paved and unpaved roads. …”
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