نتایج جستجو برای: n2
تعداد نتایج: 19602 فیلتر نتایج به سال:
Objectives: Children’s auditory event-related potentials (ERPs) are dominated by the P1 and N2 peaks, while the N1 wave emerges between 3 and 4 years of age. The neural substrates and the behavioral correlates of the protracted N1 maturation, as well as of the 10-year long predominance of the N2 are unclear. The present study utilized high-resolution electroencephalography to study the maturati...
The Euphorbiaceae family is one of the largest families in the plant kingdom. It comprises 263 genera and about 7300 species of almost cosmopolitan distribution. Euphorbia, the largest genus of Euphorbiaceae, with about 1600 species is characterized by the presence of milky latex. This genus has been the subject of numerous chemical studies. E. altotibetica is a perennial herb mainly growing in...
Due to its high greenhouse effect, the use of SF6 as main insulating gas is restricted in electric power field. Along with aim environmental protection, search for new alternative gases a lower effect and higher insulation strength has received lot attention. The properties have vital impact on performance medium-voltage distribution equipment. Firstly, based existing liquefaction temperatures ...
This study describes the relationships between dinitrogen (N2 ) fixation, dihydrogen (H2 ) production, and electron transport associated with photosynthesis and respiration in the marine cyanobacterium Trichodesmium erythraeum Ehrenb. strain IMS101. The ratio of H2 produced:N2 fixed (H2 :N2 ) was controlled by the light intensity and by the light spectral composition and was affected by the gro...
Large-scale plasma produced in nitrogen gas at room temperature and pressures ranging from 4 × 103 to 1.2 × 105 Pa by high-power laserinduced dielectric breakdown (LIDB) has been investigated. Time-integrated optical nitrogen gas spectra excited from a CO2 laser have been measured and analysed. The spectrum of the generated plasma is dominated by the emission of strong N+ and N and very weak N2...
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2-fixation in marine ecosystems. We used clone libraries to examine transcript diversity of nifH (a gene associated with N2-fixation) in sediments at ...
Gram-negative Pseudomonas and Gram-positive Bacillus are the most common spoilage bacteria in raw and pasteurized milk, respectively. In previous studies, nitrogen (N2) gas flushing treatments of raw and pasteurized milk at cold chain-temperatures inhibited bacterial spoilage and highlighted different susceptibilities to the N2 treatment with the exclusion of certain bacterial types. Here, we i...
AIM Compare the basic characteristics of patients and to examine the existence of higher rates of perioperative complications (0 - 30 days) in women versus men after carotid endarterectomy (CEA). METHODS This is a retrospective-prospective study included 270 patients with significant stenosis of carotid in whom CEA was performed, during the period from 2012 to 2017. Patients they were divided...
This paper summarizes some highlights of aeroacoustics research in Europe in 2002, compiled from information provided to the Aeroacoustics Specialists Committee (ASC) of the Confederation of European Aerospace Societies (CEAS). The CEAS comprises the national Aerospace Societies of France (AAAF), Germany (DGLR), Italy (AIDAA), The Netherlands (NVvL), Spain (AIAE), Sweden (FTF), Switzerland (SVF...
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