نتایج جستجو برای: endothermic reaction

تعداد نتایج: 413950  

2012
Helmut Käfer Helmut Kovac Anton Stabentheiner

Vespine wasps are known for their high endothermic capacity. Endothermic activity is directly linked to respiration. However, knowledge on wasp respiration is sparse and almost nothing is known about their resting metabolism. We investigated the yellowjackets' CO(2) production in a flow-through respirometer chamber overnight. Endothermic and behavioral activity was observed by real-time infrare...

Journal: :DENKI-SEIKO[ELECTRIC FURNACE STEEL] 1962

Journal: :The journal of physical chemistry. A 2008
Tanya K Todorova Ivan Infante Laura Gagliardi John M Dyke

The La + O and La + O 2 chemiionization reactions have been investigated with quantum chemical methods. For La + O 2(X (3)Sigma g) and La + O 2(a (1)Delta g), the chemiionization reaction La + O 2 --> LaO 2 (+) + e (-) has been shown to be endothermic and does not contribute to the experimental chemielectron spectra. For the La + O 2(X (3)Sigma g) reaction conditions, chemielectrons are produce...

Journal: :Bioresources 2021

Desethyl-atrazine (DEA) is a metabolite of atrazine that exerts considerable influence on the environment. In this study, tall fescue biochar was prepared by pyrolysis at 500 °C, and batch experiments were conducted to explore its effect adsorption behavior DEA in red soil, brown black soil. The addition increased equilibrium amount for three soil types. A pseudo-second-order kinetic model most...

Journal: :Temperature 2015
Andreas D Flouris

Dear Editor-in-Chief, The paper by Kobayashi entitled “Temperature receptors in cutaneous nerve endings are thermostat molecules that induce thermoregulatory behaviors against thermal load” summarizes a series of elegant studies conducted by Kobayashi and colleagues during the past 30 years. These studies have challenged the “hypothalamic proportional control” model which remains the most widel...

2010
Qi-Ning Sun Chung-Yun Hse Todd F. Shupe

Urea-formaldehyde resins modified by melamine were synthesized by four catalysts (H2SO4, HCl, H3PO4, and NaOH/NH4OH) with a F/U/M molar ratio of 1.38/1/0.074. Resin structure and thermal behavior were studied by C-NMR and DSC techniques. For H2SO4, HCl, and H3PO4 catalysts, resins were prepared by two stage pH adjustment: the first pH stage was set at 1.25 (H3PO4 pH 1.60) and second pH stage wa...

Journal: :Energies 2022

Chemical looping combustion is one novel technology for controlling CO2 emission with a low energy cost. Due to lack of understanding the detailed and micro behavior CLC process, especially three dimensional structure, numerical simulations are carried out in this work. The configuration built according experimental unit gaseous fuel used A two-fluid model considering heterogeneous reactions es...

Journal: :Journal of Radioanalytical and Nuclear Chemistry 2022

Abstract Nano ZnO is biosynthesized using Lactobcillus sp. Poly Acrylic acid-co-Acrylonitrile/ZnO, PAACAN/ZnO, and poly acid-co-Maleic acid/ZnO, PAACMA/ZnO, nancomposites were synthesized 60 Co γ -rays. PAACAN/ZnO PAACMA/ZnO nanocomposites characterized used as sorbents for Co(II) radionuclide. The monolayer adsorption capacities of onto are 18.235, 7.105 mgg −1 , respectively at pH 4.5 20 °C. ...

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