نتایج جستجو برای: time temperature cycles

تعداد نتایج: 2325114  

In this paper, the development of a new potassium carbonateon alumina support sorbent prepared by impregnating K2CO3 with an industrial grade of Al2O3 support was investigated. The CO2 capture capacity was measured using real flue gas with 8% CO2 and 12% H2O in a fixed-bed reactor at a temperature of 65 °C using breakthrough curves. The developed sorbent showed an adsorption capacity of 66.2 mg...

Journal: :Energies 2023

The failure of gas turbines’ hot components due to fatigue significantly affects their efficient and stable operation. Conducting online damage assessment subjected complex cyclic loads based on the working conditions turbines can provide real-time reflection component achieve purpose predictive maintenance. In this study, we propose an cycle counting method that considers temperature fluctuati...

2016
Furqan Aziz Edwin R. Hancock Richard C. Wilson

This paper presents an informational functional that can be used to characterise the entropy of a graph or network structure, using closed random walks and cycles. The work commences from Dehmer’s information functional, that characterises networks at the vertex level, and extends this to structures which capture the correlation of vertices, using walk and cycle structures. The resulting entrop...

Journal: :JCSE 2014
Wei Zhang Yiqiang Ding

Time-predictability of computing is critical for hard real-time and safety-critical systems. However, currently there is no metric available to quantitatively evaluate time-predictability, a feature crucial to the design of time-predictable processors. This paper first proposes the concept of architectural time-predictability, which separates the time variation due to hardware architectural/mic...

2007
Eli Biham Orr Dunkelman Nathan Keller

The slide attack is applicable to ciphers that can be represented as an iterative application of the same keyed permutation. The slide attack leverages simple attacks on the keyed permutation to more complicated (and time consuming) attacks on the entire cipher. In this paper we extend the slide attack by examining the cycle structures of the entire cipher and of the underlying keyed permutatio...

Journal: :Proceedings. Biological sciences 2013
Werner Wolfgang Alekos Simoni Carla Gentile Ralf Stanewsky

Circadian clocks are endogenous approximately 24 h oscillators that temporally regulate many physiological and behavioural processes. In order to be beneficial for the organism, these clocks must be synchronized with the environmental cycles on a daily basis. Both light : dark and the concomitant daily temperature cycles (TCs) function as Zeitgeber ('time giver') and efficiently entrain circadi...

E. Salehi M. Mehmannavaz R. Hajinasiri S. Afshari Sharif Abad S. Rezayati Sh. Haghi

Phospho sulfonic acid (PSA) synthesized as an environmentally safe and efficient solid acid catalyst, and it used for the synthesis of several 2-disubstituted benzimidazoles, 2-substituted benzoxazoles, and 2-substituted quinoxalines in ethanol as a green solvent at ambient temperature is described. (i) A very simple, green and efficient procedure for the synthesis of benzimidazole and also benz...

Forough Ameli Kaveh Mohammadi

Thermal recovery techniques including Fast-SAGD process increases the production efciency of heavy oil reservoirs. Effective parameters in this study included injection and production rates, height of the injection, production, and offset wells, production and injection cycles, and pressure of the offset wells. In this study, optimization studies were performed. The objective function was defned a...

2014
Sofia Cerasoli Timothy Wertin Mary Anne McGuire Ana Rodrigues Doug P. Aubrey João Santos Pereira Robert O. Teskey

Most investigations of plant responses to changes in temperature have focused on a constant increase in mean day/night temperature without considering how differences in temperature cycles can affect physiological processes and growth. To test the effects of changes in growth temperature on foliar carbon balance and plant growth, we repeatedly exposed poplar saplings (Populus deltoides × nigra)...

2013
Chorng-Horng Lin

The polymerase chain reaction (PCR) is an easy, economic, convenient and biochemical technology in molecular biology for the amplification of thousands to millions of copies of a particular DNA sequence. The method consists of repetitive cycles of three steps: denaturation, hybridization, and polymerase extension, that raising temperature to break hydrogen bonds for formation of the single stra...

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