scholarly journals Thrust distribution for 3-jet production from e+e− annihilation within the QCD conformal window and in QED

2021 ◽  
pp. 136728
Author(s):  
Leonardo Di Giustino ◽  
Francesco Sannino ◽  
Sheng-Quan Wang ◽  
Xing-Gang Wu
2020 ◽  
Vol 1000 ◽  
pp. 257-264
Author(s):  
Bambang Heru Susanto ◽  
Joshua Raymond Valentino Siallagan

Bio-Jet could be produced by the synthesis of vegetable oil through the hydrodeoxygenation, decarboxylation, decarbonization, and catalytic cracking process. Physical characteristics, activities, and selectivity of the catalyst used will determine the rate, conversion, and yield of the reaction that being carried out. This study aims to compare and obtain the best characteristics of NiMoP/γ-Al2O3 catalysts synthesized using two types of preparation, impregnation and microwave polyol methods, which will be used for bio-jet production. The impregnation method takes more than 24 hours for catalyst preparation, while microwave polyols that use microwaves can synthesize catalysts faster. Both catalysts have almost the same loading on the weight of the catalyst, which in the microwave polyol method has a more dispersed promotor and active site, although the crystallinity level is deficient and tends to be amorphous compared to the impregnation method with high crystallinity. In bio-jet synthesis reaction with operating conditions of 5% catalyst loading by comparison to Coconut Oil, 400°C, and 15 bar, the conversion, yield, and selectivity of catalyst impregnation were 91.705%, 47.639%, and 84.511%, while microwave polyol catalysts were 90.296%, 42.752%, and 82.517%, respectively. In conclusion, microwave polyol provides a more effective and efficient preparation method.


2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
James Currie ◽  
Thomas Gehrmann ◽  
Alexander Huss ◽  
Jan Niehues

We correct an error in the implementation of specific integrated initial-final antenna functions that impact the numerical predictions for the DIS process.


2021 ◽  
pp. 136335
Author(s):  
R. Gauld ◽  
A. Gehrmann-De Ridder ◽  
E.W.N. Glover ◽  
A. Huss ◽  
I. Majer
Keyword(s):  

2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Hjalte Frellesvig ◽  
Kirill Kudashkin ◽  
Christopher Wever

Author(s):  
Dennis Keller

AbstractThe scope of the present paper is to assess the potential of distributed propulsion for a regional aircraft regarding aero-propulsive efficiency. Several sensitivities such as the effect of wingtip propellers, thrust distribution, and shape modifications are investigated based on a configuration with 12 propulsors. Furthermore, an initial assessment of the high-lift performance is undertaken in order to estimate potential wing sizing effects. The performance of the main wing and the propellers are thereby equally considered with the required power being the overall performance indicator. The results indicate that distributed propulsion is not necessarily beneficial regarding the aero-propulsive efficiency in cruise flight. However, the use of wing tip propellers, optimization of the thrust distribution, and wing resizing effects lead to a reduction in required propulsive power by $$-2.9$$ - 2.9 to $$-3.3\,\%$$ - 3.3 % compared to a configuration with two propulsors. Adapting the leading edge to the local flow conditions did not show any substantial improvement in cruise configuration to date.


1986 ◽  
Vol 32 (1) ◽  
pp. 67-83 ◽  
Author(s):  
Mats Bengtsson ◽  
Torbj�rn Sj�strand ◽  
Maria Zijl

1989 ◽  
Vol 312 (3) ◽  
pp. 616-644 ◽  
Author(s):  
Ronald Kleiss ◽  
Hans Kuijf

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