百度试题 结果1 题目What is the chemical symbol for nitrogen? A. N B. Ni C. Na D. Ne 相关知识点: 试题来源: 解析 a) Sun 反馈 收藏
Lv C, Liu J, Lee C et al (2022) Emerging p-block-element-based electrocatalysts for sustainable nitrogen conversion. ACS Nano 16:15512–15527 Google Scholar Li P, Liao L, Fang Z et al (2023) A multifunctional copper single-atom electrocatalyst aerogel for smart sensing and producing ammoni...
Fresh plant material was snap frozen in liquid nitrogen and immediately ball milled in stainless steel 25-ml grinding jars (Retsch) for 1 min at 30 Hz. Ground material was subsequently collected in 15 ml falcon tubes and cell wall material was extracted as follows: chloroform:methanol (...
thoseinvolvingthenitrogenchemistryresponsibleforproducingnitrogen-oxygenbasedpollutants.The mostcomprehensivepartsofthedatabase,then,arethethermodynamicpropertiesforspeciesimportant insuchcombustionsystems.Focusedstudiesofthechemicalvapordepositionofsiliconfromsilaneat ...
Having a chemical symbol (Pb) and valences of ions as Pb+2 and Pb+4, it is one of the most widespread heavy metals found enclosed in industrial wastewaters, which is identified to be lethal for living beings [44]; hence, it is essential that its elimination from wastewaters is of ...
We can see that the biomethane enters the reactor with a mass fraction of the gas which is high at the beginning, i.e., at the bottom of the reactor, and it is equal to 0.57 (the mass fraction of nitrogen gas is about 0.43). While the gas passes through the fluidized bed it ...
Some proton/anion exchange membrane electrolyzers can use high humidity vapor feed to the anode; however, the cathode of all of these electrolyzers must operate in an air-free atmosphere12,13,14,15,16,17,18,19,20, purged by an inert carrier gas such as nitrogen or argon, resulting in ...
The weighted response ratio (RR++) for the responses to chemical nitrogen fertilizers of soil organic carbon (SOC, a), total nitrogen (TN, b), and their ratios (C:N, c). Bars denote the overall mean response ratio RR++ and 95% confidence intervals (CI). The star (*) indicates signif...
Protein content was determined using the Dumas combustion method in a LECO FP-528 Protein/Nitrogen Analyzer (Leco Corporation, St. Joseph, MI, USA). The conversion factor used to calculate protein content was 6.25 for zein, and 5.70 for gluten flour (Esen, 1980, Jones, 1931). The ...
The chemical shifts in the 14N NMR spectra at various temperatures are shown in Fig. 7. The structural geometries of N(1) and N(2) in the two [NH2(CH3)2]+ groups were determined based on the 14N NMR chemical shifts. The resonance pairs for 14N are indicated by the same symbol. ...