Single crystals of the title compound, trilead(II) bis-[tellurate(IV)] dibromide, have been grown under hydro-thermal conditions. The structure is isotypic with that of the chloride analogue, Pb(3)Te(2)O(6)Cl(2), and consists of three Pb, two Te, two Br and four O atoms in the asymmetric unit. Except for two of the O atoms, all atoms are located on mirror planes. The Pb(3)Te(2)O(6)Br(2) structu...

The helium-like argon spectrum is measured for the plasma in the Large Helical Device (LHD). The electron temperature Te derived from the intensity ratio of the resonance line (1s2 S0 – 1s2p P1) to a dielectronic satellite line (1s22p P1/2 – 1s2p2 D3/2) is consistent with the central Te measured with the Thomson scattering method when the electron density ne has a peaked profile. The ion temper...

High power laser – total emissivity method (HPL-TE method) for determination of coatings relative total emissivity dependent on the temperature is introduced. Method principle, experimental and evaluation parts of the method are described. Computer model of HPL-TE method is employed to perform the sensitivity analysis of the effect of method parameters on the sample surface temperature in the p...

BACKGROUND In recent years, there has been growing interest in measuring the efficiency of hospitals in Iran and several studies have been conducted on the topic. The main objective of this paper was to review studies in the field of hospital efficiency and examine the estimated technical efficiency (TE) of Iranian hospitals. METHODS Persian and English databases were searched for studies rel...

A partial cation exchange reaction between CdTe nanoparticles and Bi(3+) ions gives rise to spontaneous formation of two-dimensional Bi(2)Te(3)/CdTe nanosheets. The average size and thickness of the nanosheets are around 200 and 6.9 nm, respectively. Both CdTe and Bi(2)Te(3), which are there as the form of nanoparticles with average sizes of 3.4 nm, are found to be homogenously distributed in t...

This paper applied a non-parametric (Data Envelopment Analysis) method to analyze the efficiency of farmers, discriminate efficient farmers from inefficient ones and to identify wasteful uses of energy in order to optimize the energy inputs for greenhouse cucumber production in Lorestan province of Iran. Data were collected from 27 cucumber producers by using a face-to-face questionnaire.DEA cr...

Increased transpiration efficiency (the ratio of biomass to water transpired, TE) could lead to increased drought tolerance under some water deficit scenarios. Intrinsic (i.e., leaf-level) TE is usually considered as the primary source of variation in whole-plant TE, but empirical data usually contradict this assumption. Sunflower has a significant variability in TE, but a better knowledge of t...

Based on the TiN square-ring structure, a spectrally selective absorber for solar thermal absorption is proposed announcing an average of 95.69% in major spectral region (280 nm∼2500 nm). When wavelength exceeds 2500 nm, declines rapidly and decreases to 40.4% at 4000 showing excellent selectivity. As incident angle TE or TM polarized wave varies range 0∼60 degrees, maintains more than 90% effi...

The low conversion efficiency of solar cells produces large amounts of thermal energy to the cells, and with an increase in the temperature of solar cells, their electrical efficiency decreases. Therefore, a hybrid photovoltaic thermal system improves the overall efficiency of the system by adding thermal equipment to the solar cell and removing excessive heat from these cells. In this paper, w...

A simple hybrid thermoelectric-magnetocaloric (TE-MC) system is analytically and numerically simulated using the working parameters of commercial Peltier cells properties a material with first-order low-hysteresis magneto-structural phase transition as La(Fe,Mn,Si)13H1.65. The need for new master equation heat diffusion introduced to deal these materials. solved by Crank–Nicolson finite differe...