scholarly journals Potential role of the Fast Flux Test Facility and the advanced test reactor in the U.S. tritium production system

1996 ◽  
Author(s):  
W.A. Dautel
Keyword(s):  
Production System ◽  
Potential Role ◽  
Test Facility ◽  
Tritium Production ◽  
Fast Flux ◽  
Test Reactor ◽  
The U.S

Modeling the Spread of Annual Influenza Epidemics in the U.S.: The Potential Role of Air Travel

2004 ◽  
Vol 7 (2) ◽  
pp. 127-134 ◽  
Author(s):  
R.F. Grais ◽  
J.H. Ellis ◽  
A. Kress ◽  
G.E. Glass
Keyword(s):  
Potential Role ◽  
Air Travel ◽  
The U.S

Global Geopolitical Dynamics and Prospects for Afghanistan’s Regional Connectivity

2021 ◽  
pp. 16-34
Author(s):  
Pashmina Mughal ◽  
Sadia Suleman
Keyword(s):  
Potential Role ◽  
Domestic Politics ◽  
The Political ◽  
Regional Politics ◽  
Economic Stability ◽  
Regional Trade ◽  
Sustainable Peace ◽  
Great Game ◽  
The U.S

This article focuses on postulating Afghanistan in the context of geopolitics and its role as a regional ‘connector’ in the emerging global scenario. With the shift in geopolitics, the indicators of the New Great Game also suggest the emerging role of Afghanistan in the context of regional connectivity. However, the discordant society of Afghanistan, the paradoxical nature of domestic politics, and the deteriorating security situation in the country remain vital challenges in this regard. Nevertheless, this article argues that the ‘resetting’ of the international and regional politics provides a broader scope for Afghanistan, in becoming a regional transit and connectivity hub for South and Central Asia to Europe and Middle East. Through intra-regional trade and transit, this connectivity will not only ensure political and economic stability of Afghanistan but will also contribute to establishing sustainable peace in the country. In doing so, the article examines various regional developmentalprojects to explore the potential role of Afghanistan, following the U.S. withdrawal, towards regional peace and stability. Furthermore, it contributes to signifying the political and economic integration of Afghanistan within the region. It concludes that peace and stability are necessary milestones to be achieved for Afghanistan to serve as a ‘regional connectivity hub’.

Experimental and Analytical Study on Chemical Reaction Loss Accident With a Mock-Up Model of HTTR Hydrogen Production System

2004 ◽  
Author(s):  
Hirofumi Ohashi ◽  
Tetsuo Nishihara ◽  
Tetsuaki Takeda ◽  
Yukimasa Maeda ◽  
Hiroyuki Sato ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Chemical Reaction ◽  
Production System ◽  
Chemical Reactor ◽  
Scale Model ◽  
Test Facility ◽  
Target Range ◽  
Gas Temperature ◽  
Helium Gas ◽  
Test Reactor

Japan Atomic Energy Research Institute has been developing a hydrogen production system coupling with the High Temperature Engineering Test Reactor (HTTR). In the design of a HTTR hydrogen production system, a steam generator (SG) is installed at the downstream of a chemical reactor, a steam reformer (SR), as a thermal absorber to keep the secondary helium gas temperature within an allowable value at an intermediate heat exchanger inlet to prevent a reactor scram. Prior to construction of it, a mock-up model test facility, approximately 1/30-scale model of the HTTR hydrogen production system, was fabricated and simulation test on chemical reaction loss accident has been carried out to investigate the mitigation of thermal disturbance using SG. It was confirmed that fluctuation of helium gas temperature could be mitigated within a target range from −10 to 10°C at SG outlet, whereas SG inlet helium gas temperature increased 231 °C, and numerical analysis results agree well with experimental results.

Closure of the Fast Flux Test Facility: Current Status and Future Plans

2007 ◽  
Author(s):  
C. P. Lesperance ◽  
S. V. Doebler ◽  
T. M. Burke
Keyword(s):  
Environmental Impact ◽  
Washington State ◽  
Test Facility ◽  
Current Status ◽  
Environmental Impact Statement ◽  
Hanford Site ◽  
Fast Flux ◽  
Sodium Storage ◽  
The U.S ◽  
Future Plans

The Fast Flux Test Facility (FFTF) was a 400 MWt sodium-cooled fast reactor situated on the U.S. Department of Energy’s (DOE) Hanford Site in the southeastern portion of Washington State. DOE issued the final order to shut down the facility in 2001, when it was concluded that there was no longer a need for FFTF. Deactivation activities are in progress to remove or stabilize major hazards and deactivate systems to achieve end points documented in the project baseline. The reactor has been defueled, and approximately 97% of the fuel has been removed from the facility. Approximately 97% of the sodium has been drained from the plant’s systems and placed into an on-site Sodium Storage Facility. The residual sodium will be kept frozen under a blanket of inert gas until it is removed later as part of the facility’s decontamination and decommissioning (D&D). Plant systems have been shut down and placed in a low-risk state to minimize requirements for surveillance and maintenance. D&D work cannot begin until an Environmental Impact Statement has been prepared to evaluate various end state options and to provide a basis for selecting one of the options. The Environmental Impact Statement is expected to be issued in 2009.

scholarly journals The Elasticity of Intergenerational Substitution, Parental Altruism, and Fertility Choice

2018 ◽  
Vol 86 (5) ◽  
pp. 1935-1972
Author(s):  
Juan Carlos Córdoba ◽  
Marla Ripoll
Keyword(s):  
Potential Role ◽  
Strong Support ◽  
Single Parameter ◽  
Fertility Rates ◽  
Intertemporal Substitution ◽  
Fertility Choice ◽  
Elasticity Of Intertemporal Substitution ◽  
Parental Altruism ◽  
The U.S

Abstract Dynastic models common in macroeconomics use a single parameter to control the willingness of individuals to substitute consumption both intertemporally, or across periods, and intergenerationally, or across parents and their children. This article defines the concept of elasticity of intergenerational substitution (EGS), and extends a standard dynastic model in order to disentangle the EGS from the EIS, or elasticity of intertemporal substitution. A calibrated version of the model lends strong support to the notion that the EGS is significantly larger than one. In contrast, estimates of the EIS suggests that it is at most one. What disciplines the identification is the need to match empirically plausible fertility rates for the U.S. We illustrate the potential role of the EGS in macroeconomics.

POPDC proteins and cardiac function

2019 ◽  
Vol 47 (5) ◽  
pp. 1393-1404 ◽  
Author(s):  
Thomas Brand
Keyword(s):  
Potential Role ◽  
Striated Muscle ◽  
Short Review ◽  
Effector Proteins ◽  
Muscle Disease ◽  
Disease Genes ◽  
Protein Protein Interaction ◽  
Interaction Partners ◽  
And Function

Abstract The Popeye domain-containing gene family encodes a novel class of cAMP effector proteins in striated muscle tissue. In this short review, we first introduce the protein family and discuss their structure and function with an emphasis on their role in cyclic AMP signalling. Another focus of this review is the recently discovered role of POPDC genes as striated muscle disease genes, which have been associated with cardiac arrhythmia and muscular dystrophy. The pathological phenotypes observed in patients will be compared with phenotypes present in null and knockin mutations in zebrafish and mouse. A number of protein–protein interaction partners have been discovered and the potential role of POPDC proteins to control the subcellular localization and function of these interacting proteins will be discussed. Finally, we outline several areas, where research is urgently needed.

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