Frequently, poor reproducibility results from incomplete conversion of the initial substances during the synthesis or the pronounced influence of the surrounding gaseous medium on the composition and properties of the specimen and its interactions with water vapor, carbon dioxide, and the materials of ...
Metal halide perovskite solar cells have shown remarkable progress in power conversion efficiency, which has been boosted up to 25% within only a few years1. Approximately 2000 perovskites2can be synthesized but their suitability for photoelectric devices strongly depends on their electronic band gap. ...
MFM Fahmy,HI Nabih - 《Energy Conversion & Management》 被引量: 4发表: 2016年 Derivation of Temperature Distribution of Stator Winding with Transposed Conductors for a Large Air-Cooled Hydrogenerator Calculation of temperature field of transposition strands in slot portion is the key problem in lar...
TtopK := v0 TbottomK := v1 We see that for a really thin glass plate, the top surface temperature and the bottom surface Kelvin temperatures (269.87) are equal and match the results of the earlier formula described in reference 3. This should happen if our system of equations is ...
The derivation of the system of Eq. (4), initial and boundary conditions (5)–(7) is very cumbersome, so we omit them; they are given in the work [17]. System (4) contain four equations and the lower terms also contain \({U}_{3} , \alpha \mathrm{ and}\) their derivatives ...
Metal halide perovskite solar cells have shown remarkable progress in power conversion efficiency, which has been boosted up to 25% within only a few years1. Approximately 2000 perovskites2can be synthesized but their suitability for photoelectric devices strongly depends on their electronic band gap....
where e′ is the excess negative carriers. The same formula is also valid for and . This is thedonor-like effect. In doping and HD processing jointly optimized thepH. InFigure 2b, we plot thezTvalues at 500 K as a function ofpH. Although thepHvalues of the literature and the presen...
The thermochromic evaluation of the inks and TCSs of various colors was recorded by a digital camera (Canon, EOS 80D) and the RGB data were analyzed and obtained by MatlabR2018b software (The MathWorks, Inc). According to CIE-XYZ and RGB conversion formula (Eqs.15–18), we can obtain ...
Fracture fluids were additionally characterized by negative ion ESI 21 tesla FT-ICR MS. This technique provides the highest mass accuracy and resolution, enabling the detection of tens of thousands of peaks within a given DOC sample, with subsequent molecular formula assignment for complex mixtures su...
3.1. LST Derivation 3.1.1. Calculation of Proportion of Vegetation The proportion of vegetation (PV) is commonly derived using the NDVI, which can be given as follows: 𝑃𝑉=(𝑁𝐷𝑉𝐼−𝑁𝐷𝑉𝐼𝑀𝑖𝑛𝑁𝐷𝑉𝐼𝑀𝑎𝑥−𝑁𝐷𝑉𝐼𝑀𝑖𝑛)2,PV=NDVI...