CO2 Sequestration by Conventional and Alternative Means

2010 ◽  
Author(s):  
Justin Zachary ◽  
Harvey Wen
Keyword(s):  
Co2 Capture ◽  
Alternative Methods ◽  
Transportation Fuel ◽  
Injection Process ◽  
Alternative Means ◽  
Ccs Technologies ◽  
Long Term Impact ◽  
Solid Form ◽  
New Generation

In the present climate of uncertainty about CO2 emissions legislation, owners and power plant planners are looking into the possibility of accommodating “add-on” CO2 capture and sequestration (CCS) solutions in their current plant designs. The variety of CCS technologies currently under development makes it a very challenging task. Nevertheless, it is evident that the new generation of plants must address the CO2 capture issue. The underground sequestration of CO2 is associated with technical, legal and public acceptance issues. Current demonstration project will require years of operation in order to determine long term impact in the injection process on the environment. Alternative methods are used to convert CO2 into minerals that can be reused or at least stored in a solid form. The paper will review several of these alternative methods, identifying the advantages as well as the associated technical limitations. In addition to chemical or physical methods, the paper will address several other technologies that employ carbonation and algae as means of converting CO2 into a potential reusable material or transportation fuel. Finally the paper will address beyond the technical feasibility the economic and environmental impact of various alternative sequestration methods.

The Influence of the Temperature and Ageing Time on the NiCr23Co12Mo Alloy Microstructure

2017 ◽  
Vol 68 (4) ◽  
pp. 737-741 ◽  
Author(s):  
Marek Sroka ◽  
Marcin Nabialek ◽  
Michal Szota ◽  
Adam Zielinski
Keyword(s):  
Ageing Time ◽  
Strain Analysis ◽  
Alloy Material ◽  
Supercritical Parameters ◽  
Inconel 617 ◽  
Quantitative Identification ◽  
Alloy Microstructure ◽  
Long Term Impact ◽  
New Generation

The NiCr23Co12Mo alloy (Inconel 617) is a material used for example in the production of superheater boilers with ultra-cool supercritical parameters of work. The paper presents the results of microstructure changes after the long-term impact of temperature and strain. Analysis of the microstructure was carried out using scanning electron microscopy. Qualitative and quantitative identification of precipitations were conducted using X-ray analysis of the phase composition. Was studied the influence of ageing on tested alloy precipitations. The results of the study are the database alloy material of the new generation, which is used in the activities of the diagnostic elements of pressure parts of boilers.

Three year results of endovascular therapy with a new generation nitinol stent for femoro-popliteal artery lesions - a single-center outcome analysis of a subcohort of MISAGO 2 study

VASA ◽  
2013 ◽  
Vol 42 (5) ◽  
pp. 340-349 ◽  
Author(s):  
Ivan Kralj ◽  
Irene Boos ◽  
Uwe Müller-Bühl
Keyword(s):  
Popliteal Artery ◽  
Clinical Success ◽  
Ankle Brachial Index ◽  
Long Term Results ◽  
Outcome Analysis ◽  
Stent Fracture ◽  
Nitinol Stent ◽  
New Generation ◽  
Stent Stenosis

Background: Advances in stent technology have widened the field of indications for stent treatment of femoro-popliteal artery lesions, however the use of stents in bending arterial segments is restricted because some first- and second-generation nitinol stent designs did not respond well to the mechanical forces of femoro-popliteal segments in motion which pose a substantial risk of stent fracture inducing in-stent-stenosis. New generation nitinol stents are supposed to overcome these limitations but long-term results are rare. Patients and methods: In forty-five patients (mean age 68 y, range 50 - 85) with peripheral arterial disease (TASC II A-C, Rutherford category 2 - 5) forty-six lesions of the superficial femoral artery (37) or popliteal artery (9) were treated [25 high-grade stenoses, mean length 53 mm (range 30 - 145 mm); 21 chronic total occlusions, mean length 74 mm (range 30 - 180 mm)]. 74 % of lesions were located in the mobile bending arterial segments in the distal femoral or the popliteal segment. Clinical reevaluation performed at discharge, at 6, 12, 24, and 36 months included at least the measurement of ankle-brachial index (ABI) and duplex sonography. Results: Procedural success rate was 100 %. At 6, 12, 24, and 36 months, cumulative primary patency rate was 93.5 %, 84.8 %, 80.5 %, and 74.3 % (SE<10); freedom from target lesion revascularization rate was 95.7 %, 89.2 %, 84.9 %, and 79.3 % (SE<10); Rutherford category and ABI improved in all patients and clinical success was maintained in more than 85 % of patients. Conclusions: Sustained technical and clinical success and good clinical long-term results were achieved with Misago™ nitinol stent implantation in femoro-popliteal lesions with moderate risk for in-stent-stenosis, and in the distal femoral and popliteal mobile segment.

Crisis Phones - Suicide Prevention Versus Suggestion/Contagion Effects

Crisis ◽  
2015 ◽  
Vol 36 (3) ◽  
pp. 220-224 ◽  
Author(s):  
Steven Stack
Keyword(s):  
Suicide Prevention ◽  
Contagion Effects ◽  
Long Term Impact

Abstract. Background: There has been no systematic work on the short- or long-term impact of the installation of crisis phones on suicides from bridges. The present study addresses this issue. Method: Data refer to 219 suicides from 1954 through 2013 on the Skyway Bridge in St. Petersburg, Florida. Six crisis phones with signs were installed in July 1999. Results: In the first decade after installation, the phones were used by 27 suicidal persons and credited with preventing 26 or 2.6 suicides a year. However, the net suicide count increased from 48 in the 13 years before installation of phones to 106 the following 13 years or by 4.5 additional suicides/year (t =3.512, p < .001). Conclusion: Although the phones prevented some suicides, there was a net increase after installation. The findings are interpreted with reference to suggestion/contagion effects including the emergence of a controversial bridge suicide blog.

Long-Term Impact of Participation in the Adolescent Diversion Project

2009 ◽  
Author(s):  
Jenna L. Claes ◽  
Sean S. Hankins ◽  
J. K. Ford
Keyword(s):  
Long Term Impact

The long-term instability of the new generation hydrogen masers

2020 ◽  
pp. 35-38
Author(s):  
S.I. Donchenko ◽  
I.Y. Blinov ◽  
I.B. Norets ◽  
Y.F. Smirnov ◽  
A.A. Belyaev ◽  
...  
Keyword(s):  
Time Scale ◽  
Frequency Difference ◽  
Clock Frequency ◽  
Quantum Frequency ◽  
Frequency Standards ◽  
Quantum Frequency Standards ◽  
New Generation ◽  
Atomic Time

The latest changes in the algorithm for the formation of the international atomic time scale TAI are reported in terms of estimating the weights of the clocks involved in the formation of TAI. Studies of the characteristics of the long-term instability of new-generation hydrogen masers based on processing the results of the clock frequency difference with respect to TAI are performed. It has been confirmed that at present, new-generation hydrogen masers show significantly less long-term instability in comparison with quantum frequency standards ofsimilar and other types.

966-P: The Long-Term Impact of a Flash Glucose Monitoring System on Glycemic Control

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 966-P
Author(s):  
ATSUSHI FUJIYA ◽  
TOSHIKI KIYOSE ◽  
TAIGA SHIBATA ◽  
HIROSHI SOBAJIMA
Keyword(s):  
Glycemic Control ◽  
Monitoring System ◽  
Glucose Monitoring ◽  
Flash Glucose Monitoring ◽  
Long Term Impact ◽  
Flash Glucose Monitoring System

Dual lumen intervention for aortic dissection: long-term impact on aortic remodeling

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Xun Yuan ◽  
Andreas Mitsis ◽  
Thomas Semple ◽  
Michael Rubens ◽  
Christoph A. Nienaber
Keyword(s):  
Aortic Dissection ◽  
Long Term Impact ◽  
Aortic Remodeling
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