Results 11 to 20 of about 7,747,074 (303)

Muonium addition to sulfur-nitrogen chains

Magnetic Resonance in Chemistry, 2000
The first example of muonium addition to a sulfur-nitrogen double bond is reported. An ab initio calculation is used to assign the muon addition site as the nitrogen end of the double bond. The observed hyperfine coupling is 90.7 MHz. Copyright (C) 2000 John Wiley & Sons, Ltd.
Kelly, Paul F., Soriano-Rama, Antonio, Wood, Paul T., Reid, Ivan D., Claxton, Thomas A., Rhodes, Christopher J., Jayasooriya, Upali A.   +6 more
openaire   +3 more sources

Responses of ecosystem nitrogen cycle to nitrogen addition: a meta‐analysis [PDF]

New Phytologist, 2010
• Anthropogenic nitrogen (N) addition may substantially alter the terrestrial N cycle. However, a comprehensive understanding of how the ecosystem N cycle responds to external N input remains elusive. • Here, we evaluated the central tendencies of the responses of 15 variables associated with the ecosystem N cycle to N addition, using data extracted ...
Meng, Lu, Yuanhe, Yang, Yiqi, Luo, Changming, Fang, Xuhui, Zhou, Jiakuan, Chen, Xin, Yang, Bo, Li   +7 more
openaire   +2 more sources

Rhus typhina decreased soil nitrogen contents and peroxidase activity following the addition of nitrogen

, 2022
Progress in the ecological impacts of invasive species on soil nitrogen contents and soil enzyme activities following the addition of nitrogen, particularly in different forms, is currently limited.
Z. Xu, J. Liu, Wang, Y, Xu, Z, Wang, C, Liu, J, C. Wang, S. Zhong, Yu, Y, Y. Wang, Guo, E, Y. Yu, E. Guo, Zhong, S   +13 more
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The combined effect of fire and nitrogen addition on biodiversity and herbaceous aboveground productivity in a coastal shrubland

Frontiers in Plant Science, 2023
IntroductionFire and nitrogen (N) deposition each impact biodiversity and ecosystem productivity. However, the effect of N deposition on ecosystem recovery after fire is still far from understood, especially in coastal wetlands.MethodsWe selected a ...
Luyu Qi, Yixin Song, Puyi Zhang, Wenlong Sun, Wei Wang, Shijie Yi, Jing Li, Haifang Liu, Zhenggang Bi, Ning Du, Weihua Guo   +10 more
doaj   +1 more source

An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]

, 2011
A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas, Galloway, Alexander, McPherson, Norman   +2 more
core   +3 more sources

Two Dominant Herbaceous Species Have Different Plastic Responses to N Addition in a Desert Steppe

Frontiers in Plant Science, 2022
Nitrogen (N) deposition rates are increasing in the temperate steppe due to human activities. Understanding the plastic responses of plant dominant species to increased N deposition through the lens of multiple traits is crucial for species selection in ...
Aixia Guo, Aixia Guo, Aixia Guo, Xiaoan Zuo, Xiaoan Zuo, Xiaoan Zuo, Ya Hu, Ya Hu, Ya Hu, Ping Yue, Ping Yue, Xiangyun Li, Xiangyun Li, Xiangyun Li, Peng Lv, Peng Lv, Peng Lv, Shenglong Zhao   +17 more
doaj   +1 more source

Improvement of piezoresistance properties of silicon carbide ceramics through co-doping of aluminum nitride and nitrogen [PDF]

, 2008
The piezoresistance coefficient was measured on co-doped silicon carbide ceramics. Evaluation samples of alpha-silicon carbide ceramics were first fabricated by glass capsule HIP method using powder mixture of silicon carbide and aluminum nitride with ...
Kishimoto, Akira, Hayashi, Hidetaka, Okada, Yasuyuki   +2 more
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Belowground Root Competition Alters the Grass Seedling Establishment Response to Light by a Nitrogen Addition and Mowing Experiment in a Temperate Steppe

Frontiers in Plant Science, 2022
Predicting species responses to climate change and land use practices requires understanding both the direct effects of environmental factors as well as the indirect effects mediated by changes in belowground and aboveground competition. Belowground root
Mingxing Zhong, Mingxing Zhong, Chun Liu, Xiukang Wang, Wei Hu, Ning Qiao, Hongquan Song, Ji Chen, Yuan Miao, Gang Wang, Dong Wang, Zhongling Yang   +11 more
doaj   +1 more source

Nitrogen and Biochar Addition Affected Plant Traits and Nitrous Oxide Emission From Cinnamomum camphora

Frontiers in Plant Science, 2022
Atmospheric nitrous oxide (N2O) increase contributes substantially to global climate change due to its large global warming potential. Soil N2O emissions have been widely studied, but plants have so far been ignored, even though they are known as an ...
Congfei Zhu, Handong Luo, Handong Luo, Laicong Luo, Kunying Wang, Yi Liao, Shun Zhang, Shenshen Huang, Xiaomin Guo, Ling Zhang   +9 more
doaj   +1 more source

N2-fixing bacteria are more sensitive to microtopography than nitrogen addition in degraded grassland

Frontiers in Microbiology, 2023
IntroductionSoil bacteria play a crucial role in the terrestrial nitrogen (N) cycle by fixing atmospheric N2, and this process is influenced by both biotic and abiotic factors. The diversity of N2-fixing bacteria (NFB) directly reflects the efficiency of
Chengyi Li, Enrique Valencia, Yan Shi, Guiyao Zhou, Guiyao Zhou, Xilai Li   +5 more
doaj   +1 more source