The effective parameters of (5, 0) and (5, 5) single-wall carbon nanotubes during the interaction with carbon dioxide as sensors are determined. The interaction of carbon dioxide  molecules with internal and external walls of the nanotubes is studied using Gaussian 03 coding by density functional theory (DFT) at the B3LYP/6-311G level of theory. CO2 rotation around tube axles vertically and par...

This study was designed to examine carbon utilization within scalable microalgae production systems. Neochloris oleoabundans was produced in replicated troughs containing BG11 nutrient formulation. Atmospheric CO(2) was supplemented with ∼5% CO(2) or with NaHCO(3), and the pH of troughs receiving NaHCO(3) was adjusted with HCl or H(3)PO(4). Peak biomass concentrations reached 950, 1140, or 850 ...

The evasion of carbon dioxide from inland waters was only recently included in assessments of the global carbon budget1,2. Current estimates of carbon dioxide release from global freshwater systems, including lakes and wetlands, range from 0.7 to 3.3 Pg C per year1,3-6. However, these estimates are based on incomplete spatial coverage of carbon dioxide evasion, and an inadequate understanding o...

Overview of Issue In the past two years research has pointed towards the possibility of using urban planning as a tool to reduce greenhouse gas emissions in urban areas. For many focused on the issue of climate change, there is a consensus that atmospheric carbon dioxide should be contained at no more than twice the maximum level of atmospheric carbon dioxide that existed during the pre-industr...

Amine-containing adsorbents have been extensively investigated for post-combustion carbon dioxide capture due to their ability to chemisorb low-concentration carbon dioxide from a wet flue gas. However, earlier studies have focused primarily on the carbon dioxide uptake of adsorbents, and have not demonstrated effective adsorbent regeneration and long-term stability under such conditions. Here,...

In this paper, we are interested to determine the carbon dioxide pressure in the arterial blood through radial velocity difference. The blood was modeled as a two phase mixture (an aqueous carbon dioxide solution with carbon dioxide gas) by Drift flux model and the Young-Laplace equation. The distributions of mixture velocities determined from the considered model permitted the calculation of t...

BACKGROUND/AIM Hypoxia and carbon dioxide rebreathing are potential problems during eye surgery in spontaneously breathing patients. The aim of the present study was to determine effectiveness of nasal application of oxygen to prevent hypoxia and carbon dioxide accumulation in spontaneously breathing patients undergoing cataract surgery. METHODS Oxygenation and carbon dioxide rebreathing were...

Carbon Capture, Utilization and Storage (CCUS) is one of the key technologies for realizing large-scale low-carbon utilization coal-fired power plants in service. How to evaluate its economics crucial decision-making traditional enterprises. This paper analyzes changes physical, emission economic parameters in-service without with CCUS retrofit. A method evaluating feasibility retrofitting base...