Showing 2,401 - 2,420 results of 3,087 for search '"nitrogen"', query time: 0.05s Refine Results
  1. 2401

    Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter by Zhenhao Wei, Yufan Ji, Yiping Huang, Jingjing Huang, Yunguo Huang, Changhai Yue, Junzhou Li, Mingwei Tang, Yunfang Liu, Hanfei Liu, Hao Zhu, Kai Zhu, Fan Yang, Xuedong Zhu

    Published 2022-01-01
    “…The structure, acidity, and state of Zn species of the Zn/Ce modified HZ catalysts were investigated via several characterization techniques, including XRD, NH3-TPD, H2-TPR, nitrogen adsorption, and XPS. The results showed that the aromatization activity of 2 wt% Zn-modified HZ (2% Zn/HZ) could be significantly enhanced by loading 0.6 wt% Ce, which was mainly attributed to the increase in surface ZnOH+ species. …”
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  2. 2402

    Preparation of N-TiO2 Using a Microwave/Sol-Gel Method and Its Photocatalytic Activity for Bisphenol A under Visible-Light and Sunlight Irradiation by Chung-Hsin Wu, Chao-Yin Kuo, Chin-Jung Lin, Peng-Ke Chiu

    Published 2013-01-01
    “…This study applied the microwave/sol-gel method to prepare nitrogen-doped TiO2 (N-TiO2). The N-TiO2 was immobilized in glass balls to form N-TiO2/glass beads and applied to degrade Bisphenol A (BPA) under visible-light and sunlight irradiation. …”
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  3. 2403

    Validation of Farmer Perceived Soil Fertility Improving Tree Species in Agropastoral Communities of Bushenyi District by Albert. K. Muzoora, Nelson Turyahabwe, Jackson G. M. Majaliwa

    Published 2011-01-01
    “…The highest litter content was recorded for Markhamia lutea (240 g/cm2 under its canopy) followed by Croton macrostachyus (90 g/cm2), and 19 g/cm2 Erythrina abyssinica. Nitrogen was higher (P=.02) in Erythrina abyssinica litter, K and carbon in Croton macrostachyus litter (P=.03). …”
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  4. 2404

    Evaluation of carrot (Daucus carota L.) varieties for growth and yield as affected by NPSB fertilizer rates in Gondar district, Ethiopia by Abebaw Mulugeta, Fentahun Asrat, Derajew Asres, Shiferaw Mebrat

    Published 2025-01-01
    “…The treatment consisted of six rates of blended NPSB (Nitrogen, phosphorus, sulfur and Boron) fertilizer (0, 40.6, 81.3, 122, 162.3, and 203.4 kg ha-1) and two carrot varieties (Haramay-I and Nantes), which were laid out in a randomized complete block design with three replications. …”
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  5. 2405

    Evaluation and source identification of water pollution by Huaibin Wei, Haojie Qiu, Jing Liu, Wen Li, Chenchen Zhao, Hanfei Xu

    Published 2025-01-01
    “…Key indicators affecting water quality in these regions are chemical oxygen demand (CODMn), dissolved oxygen (DO), ammonia nitrogen (NH3-N), and total phosphorus (TP), with urban sewage and industrial wastewater identified as the main causes of deterioration. …”
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  6. 2406

    Infection biology as the basis of integrated control of apple canker (Neonectria ditissima) in Northern Europe by Roland W. S. Weber, Jorunn Børve

    Published 2021-01-01
    “…Therefore, their role in the disease remains unclear. Strong nitrogen-induced vegetative growth favours apple canker. …”
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  7. 2407

    Deciphering the nature and statistical optimization of antimicrobial metabolites of two endophytic bacilli by Raghda S. Isleem, Ahmed M. Eid, Saad El-Din Hassan, Khaled M. Aboshanab, Ghadir S. El-Housseiny

    Published 2025-01-01
    “…Optimization for the maximum production of antimicrobial metabolites revealed that a four-day incubation period was optimal, with sucrose and tryptone serving as the best carbon and nitrogen sources for the fermentation media. Response surface methodology model using the central composite design was created resulting in a 1.2-fold and 1.8-fold improvement in antimicrobial metabolite(s) production of C6 and C11 isolates, respectively. …”
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  8. 2408

    Numerical simulation and application of argon blowing from tundish cover for bloom continuous casting by Wu C.-H., Li Y., Liu Y-D., Xie X., Wu G.-R., Zhang M.

    Published 2023-01-01
    “…The results indicated that the increased nitrogen content in steel(Δw[N]) decreased by 21.5% from 8.78×10- 6 to 6.89×10-6 , from the end of RH to tundish, and the amount of inclusions except for MnS in bloom (scanned size: 8 mm × 8 mm) decreased by 21.3% from 13.43 to 10.57, and the average size of inclusions decreased by 19.0% from 9.27 μm to 7.51 μm.…”
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  9. 2409

    Multi-step pre-treatment of rice husk for fractionation of components including silica by Shinnosuke Ishida, Shinji Kudo, Shinji Kudo, Shusaku Asano, Shusaku Asano, Jun-ichiro Hayashi, Jun-ichiro Hayashi

    Published 2025-01-01
    “…Subsequently, alkaline aqueous solution treatment under nitrogen atmosphere facilitates the recovery of silica as sodium silicate, a valuable industrial precursor. …”
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  10. 2410

    Suitability Analysis of Three Quick-Freezing Techniques for Application in Bamboo Shoot Freezing by FAN Zhenmei, SHEN Hui, HU Tenggen, CHENG Lina, YU Lijuan, XU Yujuan, WU Jijun, YU Yuanshan

    Published 2024-12-01
    “…In this study, three varieties of fresh bamboo shoots (Dendrocalamus brandisii, Dendrocalamopsis oldhami, and Phyllostachys edulis) were frozen by immersion quick-freezing (IF), liquid nitrogen spray quick-freezing (LNF), or pressure transfer quick-freezing (PSF). …”
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  11. 2411

    Water Quality Evaluation of the Middle and Lower Reaches of Hanjiang River Based on Comprehensive Water Quality Identification Index by MA Jingjiu, YU Ting, CHEN Yanfei, YAO Huaming, LI Yang

    Published 2020-01-01
    “…With the increase of water consumption for economic and social development in Hanjiang River Basin and the completion of middle route of South-to-North Water Diversion Project,the pressure of water ecological environment in the middle and lower reaches of Hanjiang River Basin is increased gradually.This paper selects five main water quality indexes, including ammonia nitrogen (NH<sub>3</sub>-N),permanganate index (COD<sub>Mn</sub>),dissolved oxygen (DO),biochemical oxygen demand for five days (BOD<sub>5</sub>) and total phosphorus (TP) from five monitoring sections i.e.Shenwan,Yujiahu,Huangzhuang,Luohanzha and Shilou in the middle and lower reaches of Hanjiang River from 2001 to 2014,evaluates the water quality in the middle and lower reaches of Hanjiang River by single factor analysis,single factor index and comprehensive water quality identification index, and conducts quantitative analysis of the changing trend of comprehensive water quality in the middle and lower reaches of Hanjiang River with Spearman rank correlation coefficient. …”
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  12. 2412

    Magnetite-Functionalized Horse Dung Humic Acid (HDHA) for the Uptake of Toxic Lead(II) from Artificial Wastewater by Rahmat Basuki, Bambang Rusdiarso, Sri Juari Santosa, Dwi Siswanta

    Published 2021-01-01
    “…The TEM image and EDX analysis exhibited that the MHDHA with an average size of ∼14 nm was partially aggregated and contained (w/w) 9.89% carbon, 2.89% nitrogen, and 32.74% oxygen based on functional groups of HDHA. …”
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  13. 2413

    The effect of plasma nitriding duration on the tribological performance of Ni-B-Gr self-lubricant composite coatings on AISI 4140 steel by Vahid Niksefat, Farzad Mahboubi

    Published 2025-03-01
    “…Plasma nitriding (PN) treatment was performed at 400 °C for 30–240 min, using a gas combination of 25% nitrogen and 75% hydrogen. The Ni-B-Gr coatings were characterized using various techniques, including X-ray diffraction, field emission scanning electron microscopy, inductively coupled plasma optical emission spectroscopy, microhardness testing, and tribological assessments. …”
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  14. 2414

    Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania by Debra Jene Kirkconnell Reyes, Andrés García Saravia Ortiz de Montellano, Rudy Amilcar Trejo Tzab, Gerko Oskam, Juan José Alvarado Gil

    Published 2014-01-01
    “…In this paper, the influence of UV-Vis irradiation on vanadium etioporphyrins, extracted from crude oil from Dos Bocas, Tabasco, Mexico, is studied using UV-Vis spectrophotometry in the absence and presence of nanostructured TiO2 or nitrogen-doped TiO2 modified with copper (N-TiO2/Cu). …”
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  15. 2415

    Assessment of temporal and spatial eutrophication index in a water dam reservoir by F. Esfandi, A.H. Mahvi, M. Mosaferi, F. Armanfar, M. Hejazi, S. Maleki

    Published 2018-04-01
    “…Physico-chemical parametres that are effective on eutrphic condition occurrence  were analyzed, and trophic state index was calculated on a scale of 0-100 by measuring Secchi disk depth, chlorophyll a, total phosphorus, total nitrogen, total suspended solids, and phosphorus P/N ratio. …”
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  16. 2416

    Durian Rind-Based Liquid Smoke as a Natural Preservative for Chicken Meatballs: Effect of Pyrolysis Temperature and Liquid Smoke Concentration by Muhammad Faisal, Suraiya Kamaruzzaman, Ressa Fitra Adinda, Dimas Anugerah Ilahi, Taufik Hidayat, Hera Desvita

    Published 2024-06-01
    “…Tests for total volatile base nitrogen (TVB-N), in addition to the total plate count (TPC) and most probable number (MPN) of Escherichia coli bacteria, were performed to evaluate the preservation ability of the liquid smoke. …”
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  17. 2417

    Short-term impact of low air pressure on plants' functional traits. by Silvia Lembo, Georg Niedrist, Bouchra El Omari, Paul Illmer, Nadine Praeg, Andreas Meul, Matteo Dainese

    Published 2025-01-01
    “…Contrastingly, B. rupestre showed an interactive effect of air pressure and water treatment on chlorophyll and biomass nitrogen content, which were reduced under higher soil water conditions at 85kPa. …”
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  18. 2418

    A Fosmid Cloning Strategy for Detecting the Widest Possible Spectrum of Microbes from the International Space Station Drinking Water System by Sangdun Choi, Mi Sook Chang, Tara Stuecker, Christine Chung, David A. Newcombe, Kasthuri Venkateswaran

    Published 2012-12-01
    “…Bradyrhizobium and Mesorhizobium, which belong to rhizobia, a large community of nitrogen fixers often found in association with plant roots, were present in the Prebiocide samples. …”
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  19. 2419

    The Role of Artificial Lakes Located in Forests in the Context of Small Retention, Biodiversity and Climatic Changes—Evidence From Southern Poland by Rafał Starzak, Anna Cieplok, Robert Czerniawski, Aneta Spyra

    Published 2025-01-01
    “…The analysis showed low values of salinity indicators and the concentration of nitrogen and phosphorus. The pH ranged from 6.2 to 7.6; showing slightly acidic conditions or within the limits of neutral. …”
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  20. 2420

    Agro-environmental characterization of biochar issued from crop wastes in the humid forest zone of Cameroon by Samuel Fru Billa, Tsi Evaristus Angwafo, Ajebesone Francis Ngome

    Published 2018-10-01
    “…Standard laboratory procedures were used to analyze pH, CEC, total carbon and nitrogen and exchangeable cations. Results The biochars were high in nutrients containing 4.17–18.15 g kg−1 N, 22.26–42.51 mg kg−1 P, 2.48–4.18 cmol kg−1 K and pH 7.78–10.81 units. …”
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