1、《Chemistry in Context》 作者:Graham Hill, John Holman, Philippa Gardom Hulme 主要针对CIE考试局,是一本非常实用的A-level教科书。 2. 《Pre-U Chemistry》 作者:Dr Michael A. Thompson 虽然针对的是CIE Pre-U课程,但这是一本非常优秀的化学教科书,A-level学生也可以用作学习参考。 3. 《Oxford IB...
Cambridge International Examinations Cambridge International Advanced Subsidiary and Advanced Level CHEMISTRY 9701/13 Paper 1 Multiple Choice May/June 2018 1 hour Additional Materials: Multiple Choice Answer Sheet * Soft clean eraser 2 Soft pencil (type B or HB is recommended) 8 2 Data Booklet 3 6...
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In addition, the statistical test shows that there is not any difference among the mean diameters of the three treated sample populations (at the 0.01 confidence level). Table 1 Diameters of the raw and the treated cellulose fiber bundles. Full size table An important parameter in textile ...
Since the MOF has too huge number of atoms that prevent the calculation with quantum chemistry method, the single molecule model BPDC-MIMS2–, and it coordinated with one and three MSAs were constructed. Their optimized structures are shown in Supplementary Fig. 18a. For the BPDC-MIMS2– ...
Xk, andd) for selected polymer material in the energy range of 0.015–15 meV up to penetration depth of 40 mean free path (mfp) is computed with the help of equivalent atomic number (Zeq) using interpolation formula. Interpolation values were obtained with the use of the following equation:...
Atom probe tomography (APT) is extensively used to measure the local chemistry of materials. Site-specific preparation via a focused ion beam (FIB) is routinely implemented to fabricate needle-shaped specimens with an end radius in the range of 50 nm. This preparation route is sometimes supplemen...
The Journal of Physical Chemistry B(IF2.8)Pub Date : 2007 Feb 22, DOI:10.1021/jp0680342 J. A. W. Elliott1, R. C. Prickett1, H. Y. Elmoazzen1, K. R. Porter1, L. E. McGann1 Affiliation The osmotic virial equation was used to predict osmolalities of solutions of interest in bi...
The 4-terminal mobility (μ4T) was calculated from the equation μ4T = (1/Ci)(∂σ4T/∂VG), where Ci, σ4T, and VG are the capacitance per unit area of gate insulator, the sheet conductivity extracted from the 4-terminal measurement, and the gate voltage, respectively. The ...
3d) and Randles–Sevcik equation (Eq. (5)). Consistent with the LSV results, the increases in loading that promoted an increase in ESA, from 4.4 to 13.2 mg cm−2, were 1.86, 4.47, and 5.62 cm2, respectively. On the other hand, when the catalyst loading was too high, ...