Line identification of boron and nitrogen emissions in EUV and VUV wavelength ranges in the impurity powder dropping experiments of LHD and its application to spectroscopic diagnostics

2021 ◽  
Author(s):  
Tetsutarou Oishi ◽  
Naoko Ashikawa ◽  
Federico Nespoli ◽  
Suguru Masuzaki ◽  
Mamoru Shoji ◽  
...  
Keyword(s):  
Nitrogen Emissions ◽  
Spectroscopic Diagnostics ◽  
Line Identification

Spectroscopic Diagnostics of Tokamaks

1988 ◽  
Vol 102 ◽  
pp. 165-174
Author(s):  
C. de Michelis
Keyword(s):  
Transport Properties ◽  
Power Losses ◽  
Spectroscopic Diagnostics ◽  
Important Concern

AbstractImpurities being an important concern in tokamaks, spectroscopy plays a key role in their understanding. Techniques for the evaluation of concentrations, power losses and transport properties are surveyed, and a few developments are outlined.

X-ray spectroscopic diagnostics of the structure of quantum dots based on zinc and manganese sulfides and oxides

2017 ◽  
Vol 58 (8) ◽  
pp. 1683-1690
Author(s):  
I. A. Pankin ◽  
◽  
A. N. Kravtsova ◽  
O. E. Polozhentsev ◽  
A. P. Budnyk ◽  
...  
Keyword(s):  
Quantum Dots ◽  
X Ray ◽  
Spectroscopic Diagnostics

Groundwater protection and diffuse nitrogen emissions to surface waters – which catchment areas have to be considered?

2007 ◽  
Vol 7 (3) ◽  
pp. 103-110
Author(s):  
C. Schilling ◽  
M. Zessner ◽  
A.P. Blaschke ◽  
D. Gutknecht ◽  
H. Kroiss
Keyword(s):  
Surface Water ◽  
Total Nitrogen ◽  
Surface Waters ◽  
Flow Path ◽  
Emission Model ◽  
Catchment Scale ◽  
Danube Basin ◽  
Nitrogen Emissions ◽  
Nitrogen Levels ◽  
Catchment Areas

Two Austrian case study regions within the Danube basin have been selected for detailed investigations of groundwater and surface water quality at the catchment scale. Water balance calculations have been performed using the conceptual continuous time SWAT 2000 model to characterise catchment hydrology and to identify individual runoff components contributing to river discharge. Nitrogen emission calculations have been performed using the empirical emission model MONERIS to relate individual runoff components to specific nitrogen emissions and for the quantification of total nitrogen emissions to surface waters. Calculated total nitrogen emissions to surface waters using the MONERIS model were significantly influenced by hydrological conditions. For both catchments the groundwater could be identified as major emission pathway of nitrogen emissions to the surface waters. Since most of the nitrogen is emitted by groundwater to the surface water, denitrification in groundwater is of considerable importance reducing nitrogen levels in groundwater along the flow path towards the surface water. An approach was adopted for the grid-oriented estimation of diffuse nitrogen emissions based on calculated groundwater residence time distributions. Denitrification in groundwater was considered using a half life time approach. It could be shown that more than 90% of the total diffuse nitrogen emissions were contributed by areas with low groundwater residence times and short distances to the surface water. Thus, managing diffuse nitrogen emissions the location of catchment areas has to be considered as well as hydrological and hydrogeological conditions, which significantly influence denitrification in the groundwater and reduce nitrogen levels in groundwater on the flow path towards the surface water.

An investigation of bridge influence line identification using time-domain and frequency-domain methods

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 2061-2065
Author(s):  
Samim Mustafa ◽  
Ikumasa Yoshida ◽  
Hidehiko Sekiya
Keyword(s):  
Frequency Domain ◽  
Time Domain ◽  
Influence Line ◽  
Line Identification ◽  
Frequency Domain Methods

scholarly journals Strategic deployment of riparian buffers and windbreaks in Europe can co-deliver biomass and environmental benefits

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Oskar Englund ◽  
Pål Börjesson ◽  
Blas Mola-Yudego ◽  
Göran Berndes ◽  
Ioannis Dimitriou ◽  
...  
Keyword(s):  
Agricultural Production ◽  
Large Scale ◽  
Production Systems ◽  
Riparian Buffers ◽  
Environmental Benefits ◽  
The European Union ◽  
Negative Effects ◽  
Nitrogen Emissions ◽  
Environmental Objectives ◽  
Eu Policies

AbstractWithin the scope of the new Common Agricultural Policy of the European Union, in coherence with other EU policies, new incentives are developed for farmers to deploy practices that are beneficial for climate, water, soil, air, and biodiversity. Such practices include establishment of multifunctional biomass production systems, designed to reduce environmental impacts while providing biomass for food, feed, bioenergy, and other biobased products. Here, we model three scenarios of large-scale deployment for two such systems, riparian buffers and windbreaks, across over 81,000 landscapes in Europe, and quantify the corresponding areas, biomass output, and environmental benefits. The results show that these systems can effectively reduce nitrogen emissions to water and soil loss by wind erosion, while simultaneously providing substantial environmental co-benefits, having limited negative effects on current agricultural production. This kind of beneficial land-use change using strategic perennialization is important for meeting environmental objectives while advancing towards a sustainable bioeconomy.

scholarly journals Selecting Biomonitors of Atmospheric Nitrogen Deposition: Guidelines for Practitioners and Decision Makers

Nitrogen ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 308-320
Author(s):  
D. Nayeli Martínez ◽  
Edison A. Díaz-Álvarez ◽  
Erick de la Barrera
Keyword(s):  
Environmental Pollution ◽  
Nitrogen Deposition ◽  
Biodiversity Loss ◽  
Decision Makers ◽  
Economic Losses ◽  
Atmospheric Nitrogen Deposition ◽  
Atmospheric Nitrogen ◽  
Nitrogen Emissions ◽  
Vascular Epiphytes ◽  
Ecophysiological Response

Environmental pollution is a major threat to public health and is the cause of important economic losses worldwide. Atmospheric nitrogen deposition is one of the most significant components of environmental pollution, which, in addition to being a health risk, is one of the leading drivers of global biodiversity loss. However, monitoring pollution is not possible in many regions of the world because the instrumentation, deployment, operation, and maintenance of automated systems is onerous. An affordable alternative is the use of biomonitors, naturally occurring or transplanted organisms that respond to environmental pollution with a consistent and measurable ecophysiological response. This policy brief advocates for the use of biomonitors of atmospheric nitrogen deposition. Descriptions of the biological and monitoring particularities of commonly utilized biomonitor lichens, bryophytes, vascular epiphytes, herbs, and woody plants, are followed by a discussion of the principal ecophysiological parameters that have been shown to respond to the different nitrogen emissions and their rate of deposition.

Rock mass trace line identification incorporated with grouping algorithm at tunnel faces

2021 ◽  
Vol 110 ◽  
pp. 103810
Author(s):  
Biao Leng ◽  
Hui Yang ◽  
Gaopeng Hou ◽  
Andrei Lyamin
Keyword(s):  
Rock Mass ◽  
Line Identification ◽  
Trace Line ◽  
Grouping Algorithm ◽  
Mass Trace
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