Time filter

Source Type

Beijing, China

Terzyk A.P.,Nicolaus Copernicus University | Furmaniak S.,Nicolaus Copernicus University | Wisniewski M.,Nicolaus Copernicus University | Wisniewski M.,Technology R and nter | And 3 more authors.
Chemical Physics Letters | Year: 2016

In this Letter, new results of calorimetric study on benzene adsorption from the gaseous phase are presented. According to some of recently published reports, the energy of solid-fluid, interactions increases with the rise in carbon nanotube curvature during adsorption. The recent considerations [Chem. Phys. Lett. 619 (2015) 219] on thermodynamics of adsorption from aqueous solutions on a series of carbon nanotubes have confirmed this observation. Although comparable 'energy-tube diameter' relations for benzene adsorption from the solution and from the gaseous phase are observed, remarkable differences between the mechanisms of the both processes caused by surface heterogeneity are noticeable. © 2016 Elsevier B.V. All rights reserved.

Wang J.-A.,Technology R and nter | Li D.,Beijing University of Technology | Zhang J.,Beijing University of Technology
Beijing Gongye Daxue Xuebao/Journal of Beijing University of Technology | Year: 2011

In the condition of room temperature 14.2~23.9°C, ANAMMOX bacteria granule sludge is inoculated to the biofilter, which is filled with lava as carrier. In the inlet sewage of initial stages, ρ(NH4 +-N)=70 mg/L, ρ(NO2 --N)=90 mg/L, the removal load of TN is 0.12 kg/(m3·d). After 105 days, the removal load of TN increases to 2.22 kg/(m3·d). The quick start-up of ANAMMOX biofilter was realized successfully. In the start-up process, according to the change of N2 yield, apparent color of biofilm, nitrogen removal velocity and pH value, the whole start-up process can be divided into two phases including domestication and quick multiplication of ANAMMOX bacteria.

Chen Y.-N.,Shanghai JiaoTong University | Chen Y.-N.,Technology R and nter | Wang C.,Shanghai JiaoTong University | Tan J.-H.,Shanghai JiaoTong University
Chuan Bo Li Xue/Journal of Ship Mechanics | Year: 2010

For the safety and vitality of a warship, the dynamic response under the action of underwater explosion (UNDEX) shock waves is an important research aspect in the field of ship structural dynamics. In this paper, the dynamic response of a surface warship subjected to UNDEX loading is analyzed with respect to the damage of ship structural deflection, the absorption of distortional energy and the impact environment by employing the numerical method.

Ge Q.,Shanghai Electrical Power Generation Equipment Co. | Tan L.,Technology R and nter | Li Y.,Technology R and nter | Li P.,Xian Jiaotong University
Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering | Year: 2013

For axially interrupted connection of rotor structure with curvic couplings, bending stiffness of the curvic couplings was calculated under the action of different pre-tightening forces using both theoretical and nonlinear contact analysis method based on 3D finite element, after which the stiffness corrective coefficient of curvic coupling was proposed in relation to the integrated structure of rotors, while the influence of key structural parameters on the bending stiffness analyzed. Results show that for obtaining a stable bending stiffness, it is necessary to keep the pre-tightening force being larger than the separating force induced by the bending moment; the stiffness corrective coefficient is slightly affected by both the inner and outer diameter of curvic couplings, which, however, decreases with increasing teeth number.

Szczesny R.,University of Glasgow | Szczesny R.,Nicolaus Copernicus University | Szlyk E.,Nicolaus Copernicus University | Wisniewski M.A.,Nicolaus Copernicus University | And 3 more authors.
Journal of Materials Chemistry C | Year: 2016

The simple fluorinated precursor, copper(ii) trifluoroacetate, Cu(CF3COO)2 can be effectively utilised in the synthesis of copper(i) nitride, Cu3N, powders and films by combinations of wet processing and gas-solid (ammonolysis) techniques. The resulting materials were characterized by powder X-ray diffraction (PXD), scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), diffuse reflectance UV-visible spectroscopy (DRUV-Vis), Raman spectroscopy, infrared spectroscopy (IR), thermogravimetric-differential thermal analysis-mass spectrometry (TG-DTA-MS) and nitrogen adsorption (BET) analysis. Moreover, variable temperature IR (VT-IR) studies of the solid phase were performed in situ during ammonolysis. Single-phase Cu3N powders composed of sub-micron scale platelets can be produced over relatively short reaction times. Materials prepared in this way are stoichiometric narrow band gap semiconductors. The same trifluoroacetate precursor was used to prepare nanostructured nitride films by spin coating. The surface microstructure was investigated and evaluated relative to films deposited by dip coating and nebulisation using the soluble carboxylate precursor. © 2016 The Royal Society of Chemistry.

Discover hidden collaborations