An experimental study of the way in which the internal moderators of annular fuel elements affect resonance absorption in the uranium

1976 ◽  
Vol 41 (6) ◽  
pp. 1051-1054
Author(s):  
I. M. Kisil' ◽  
V. F. Lyubchenko ◽  
I. P. Markelov ◽  
V. V. Orlov ◽  
V. V. Frolov ◽  
...  
Author(s):  
N. S. Bystrov ◽  
◽  
A. V. Emelianov ◽  
A. V. Eremin ◽  
P. I. Yatsenko ◽  
...  

The kinetics of reaction of C2H5OH with N2O behind shock waves is studied. The quantitative measurements of the time profiles of concentration of O atoms were carried out by the method of atomic resonance absorption spectroscopy (ARAS) using resonance vacuum-ultraviolet line of O-atom at 130.5 nm. For the calibration of absorption intensity of oxygen atoms depending on its concentration, the special series of experiments in the mixture containing different amounts of N2O in Ar was carried out at T = 2100 ± 50 K when molecule of N2O is completely dissociated. An experimental study of the appearance and consumption of oxygen atoms during the reaction of ethanol with oxygen in mixture 10 ppm N2O + (10 ... 0.1) ppm C2H5OH + Ar at temperatures of 16002300 K and pressures of 200-300 kPa have been carried out. A kinetic analysis of obtained data was performed using the Chemkin package.


2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Long Zhang ◽  
Zhe Zhang ◽  
Fengcheng Wu ◽  
Danqing Wang ◽  
Rahul Gogna ◽  
...  

AbstractMoiré lattices formed in twisted van der Waals bilayers provide a unique, tunable platform to realize coupled electron or exciton lattices unavailable before. While twist angle between the bilayer has been shown to be a critical parameter in engineering the moiré potential and enabling novel phenomena in electronic moiré systems, a systematic experimental study as a function of twist angle is still missing. Here we show that not only are moiré excitons robust in bilayers of even large twist angles, but also properties of the moiré excitons are dependant on, and controllable by, the moiré reciprocal lattice period via twist-angle tuning. From the twist-angle dependence, we furthermore obtain the effective mass of the interlayer excitons and the electron inter-layer tunneling strength, which are difficult to measure experimentally otherwise. These findings pave the way for understanding and engineering rich moiré-lattice induced phenomena in angle-twisted semiconductor van der Waals heterostructures.


2011 ◽  
Vol 492 ◽  
pp. 273-276 ◽  
Author(s):  
Hai Na Zhang ◽  
De Cai Li

The authors put forward a new design of experimental setup in order to study the mechanism of magnetic fluid seal, and used Ansys to simulate the magnetic field distribution in the setup, the results prove its rationality. The experiment to study the way of pressure transmission has been done on the experimental setup. The experimental conclusion shows that pressure transmission is based on the recoverability of the magnetic fluid seal. When pressure exceeds the ability of the seal stage, there is a leak path in the magnetic fluid, and then the gas flows to the next stage, after that, the leak path disappears. Pressure transmits from one seal stage to the next one in this way.


Author(s):  
Reza Barkhi

This paper presents a game theoretic view of collaborative work and suggests that the design of effective GDSS tools should be guided by the way the tool discourages dysfunctional gaming behavior. We present an illustrative experimental study that investigates the influence of communication channel, incentive structure, and problem modeling tools on decision performance, diversity of solutions, and information exchange truthfulness in collaborating groups.


Author(s):  
Julia A. Yesberg ◽  
Ben Bradford ◽  
Paul Dawson

Abstract Objectives This study tested whether the presence of a firearm changed the way people reacted to police among a British sample. Method In an online study, participants were shown images of armed and unarmed police and rated them on a number of variables. Some participants were primed to think about terrorism, and some participants were exposed to more armed police than others. Results Participants had more negative responses to police when they were armed. We found no effect of the terrorism prime on people’s reactions to images of armed police and no effect of exposure. Yet, unexpectedly, we found a negative effect of the terrorism prime on trust and legitimacy. Conclusions In a country where police have never before been routinely armed, this research raises important questions about how armed police can retain the public’s support when they may no longer be considered ‘prototypical representatives’ of the British people.


2014 ◽  
Vol 543-547 ◽  
pp. 4031-4034 ◽  
Author(s):  
Wei Li ◽  
Zhen Huang ◽  
Xiao Chu Wang ◽  
Zi Sheng Zang

For researching the way of modified and mechanism of action of the Crumb Rubber Concrete,we had researched the change regulation of Mechanical Properties and compressive strengthsplitting tensile strengthflexural strength of the Crumb Rubber Concrete Modified By Silica Fume with various quantity of rubber,in the condition of 10% silica fume.the experimental result make it clear that silica fume is propitious to heighten compressive strengthsplitting tensile strengthflexural strength of the Crumb Rubber Concrete,and compressive strengthsplitting tensile strengthflexural strength would be cut down when mix the Crumb rubber in Concrete.


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