Showing 501 - 520 results of 3,087 for search '"nitrogen"', query time: 0.09s Refine Results
  1. 501

    Ablation mechanisms of bulk Nb4AlC3 ceramics at 1600–2200 °C in nitrogen plasma flame by Ye Yu, Hao Zhang, Zhen Teng, Yiwang Bao, Man Jiang, Longsheng Chu, Qingguo Feng, Chunfeng Hu

    Published 2025-03-01
    “…This paper systematically investigates the ablation behaviors of Nb4AlC3 ceramics in nitrogen plasma flames at 1600–2200 °C. By analyzing changes in ablation rate, microstructure, and elemental composition of the surface and cross-section, the ablation evolution mechanism of Nb4AlC3 ceramics is elucidated. …”
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    Synthesis of Nitrogen-Doped Carbon Nanocoils with Adjustable Morphology using Ni–Fe Layered Double Hydroxides as Catalyst Precursors by Tomohiro Iwasaki, Masashi Tomisawa, Takuma Yoshimura, Hideya Nakamura, Masao Ohyama, Katsuya Asao, Satoru Watano

    Published 2015-01-01
    “…Nitrogen-doped carbon nanocoils (CNCs) with adjusted morphologies were synthesized in a one-step catalytic chemical vapour deposition (CVD) process using acetoni‐ trile as the carbon and nitrogen source. …”
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  4. 504

    Potassium Sulfate Supplementation with Elevated Electrical Conductivity Was Unproductive for Hydroponic Strawberry at the Original Yamazaki Nutrient Solution Nitrogen Level by Jonathan Ries, Qingwu Meng, Yujin Park

    Published 2025-01-01
    “…Bare-root plants of strawberry ‘Monterey’ and ‘San Andreas’ were planted in a deep water culture hydroponic system and grown with initial K concentrations of 117, 194, 271, and 348 mg·L−1 under the same initial nitrogen concentration of 77 mg·L−1. As the K concentration increased from 117 to 348 mg·L−1, the nutrient solution electrical conductivity increased from 1.0 to 1.9 dS·m−1. …”
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  5. 505

    Micropore Size Analysis of Activated Carbons Using Nitrogen, Carbon Dioxide and Methane Adsorption Isotherms: Experimental and Theoretical Studies by Abbas Aleghafouri, Mohsen Mohsen-Nia, Ali Mohajeri, Mohammad Mahdyarfar, Morteza Asghari

    Published 2012-04-01
    “…Nitrogen (N 2 , at 77 K and sub-atmospheric pressure), carbon dioxide (CO 2 , at 273 K, sub-atmospheric pressure and high pressure) and methane (CH 4 , at 298 K and high pressure) adsorption isotherms have been obtained for three microporous-activated carbons in order to characterize their micropore size distributions (MPSDs). …”
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  6. 506

    Influence of No-Tillage on Soil Organic Carbon, Total Soil Nitrogen, and Winter Wheat (Triticum aestivum L.) Grain Yield by Peter Omara, Lawrence Aula, Elizabeth M. Eickhoff, Jagmandeep S. Dhillon, Tyler Lynch, Gwendolyn B. Wehmeyer, William Raun

    Published 2019-01-01
    “…In each tillage system, treatments included nitrogen (N) rates at E222 (0, 45, 90, and 135 kg·N·ha−1) and E502 (0, 22.5, 45, 67, 90, and 112 kg·N·ha−1). …”
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  7. 507

    Computation and Visualization of Regional-Scale Forest Disturbance and Associated Dissolved Nitrogen Export from Shenandoah National Park, Virginia by Keith N. Eshleman, Daniel A. Fiscus, Nancy M. Castro, James R. Webb, J Jr. Deviney

    Published 2001-01-01
    “…Long-term watershed research conducted in Shenandoah National Park (SNP) in Virginia and elsewhere in the eastern U.S. indicates that annual export of dissolved nitrogen (N) from gaged forested watersheds to surface waters increases dramatically in response to vegetation disturbances. …”
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    Elevated Blood Urea Nitrogen-to-Serum Albumin Ratio as a Factor That Negatively Affects the Mortality of Patients with Hospital-Acquired Pneumonia by Ding-Yun Feng, Yu-Qi Zhou, Xiao-Ling Zou, Mi Zhou, Hai-Ling Yang, Xiao-Xia Chen, Tian-Tuo Zhang

    Published 2019-01-01
    “…This reported mortality identified by the univariate Cox regression analysis is found to have been affected by the following factors: age greater than 70 years, presence of diabetes mellitus and chronic obstructive pulmonary disease, gastric tube intubation, administration of proton-pump inhibitor, blood albumin level less than 30 g/l, elevated neutrophil-to-lymphocyte ratio, antibiotics therapy in the preceding 90 days, intensive care unit (ICU) admission, blood lymphocyte count less than 0.8 × 109/L, elevated blood urea nitrogen/albumin (BUN/ALB) level, and presence of multidrug-resistant (MDR) pathogens. …”
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  18. 518

    Nitrogen-rich covalent organic polymers for efficient solid phase extraction of nonsteroidal anti-inflammatory drugs from water samples by Yuqi Cheng, Jia Li, Xiaochen Xiu, Xinghua Teng, Wen Zhang, Lei Ji, Leilei Wang

    Published 2025-02-01
    “…In order to monitor trace levels of NSAIDs from complex water samples, development of facile and efficient sample pretreatment is of great significance. Herein, a nitrogen-rich covalent organic polymer containing phenyl, triazine and amine groups was fabricated via solvent-free copolymerization. …”
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  19. 519

    Effects of Sewage Sludge Compost on Carbon, Nitrogen, Phosphorus, and Sulfur Ratios and Soil Enzyme Activities in a Long-Term Experiment by Csilla Almási, Viktória Orosz, Timea Tóth, Mostafa M. Mansour, Ibolya Demeter, István Henzsel, Zsolt Bogdányi, Tamás András Szegi, Marianna Makádi

    Published 2025-01-01
    “…The carbon, nitrogen, phosphorus, and sulfur (CNPS) ratios of soils are known to be relatively stable parameters, characterizing different land uses. …”
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  20. 520

    Impact of Indian Mustard (Brassica juncea) and Flax (Linum usitatissimum) Seed Meal Applications on Soil Carbon, Nitrogen, and Microbial Dynamics by Autumn S. Wang, Ping Hu, Emily B. Hollister, Katie L. Rothlisberger, Anil Somenahally, Tony L. Provin, Frank M. Hons, Terry J. Gentry

    Published 2012-01-01
    “…Mustard meal amendment initially inhibited C mineralization as compared to flax, but >50% of mustard and flax organic C was mineralized within 51 d. Nitrogen mineralization was similar for flax and mustard, except for the 2.5% rate for which a lower proportion of mustard N was converted to nitrate. …”
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