关于相变的问题.As heat is added to a sample,either the kinetic energy of the molecules increases,or the potential energy of the bonds increases(phase change),but never both.为什么never both啊?当给一个样品加热,要么它的分子
Cylindrical disk A is rotating freely about an axis when an identical disk B that is not rotating is dropped directly on top of disk A. If the two disks stick together, how does the total angular momentum and total kinetic energy of the two-disk system after the disks are stuck together...
aThe video shows what happened about the Open Day at our school. 录影显示什么发生了关于开放天在我们的学校。[translate] alimile night vision energy limile夜视能量[translate] amade from limestone or calcium carbonate by burning , used in mortars ,limewashes 由石灰石或碳酸钙做通过烧,用于灰浆, li...
Another problem in some prior art transfer mechanisms is the stability of the sample containing vial as it is being transported in a vertical direction for movement into the detector chamber. The vial must be laterally supported during its vertical movement. Otherwise, the vial may become displaced...
On the other hand, the problem of adsorption to solid walls and interfaces when dealing with sample volumes in the picolitre to nanolitre range has been reported in the lit- erature. The applicability of acoustic or ultrasonic levitation (Figure 1.5) has been proposed to avoid this problem...
The advantage of this approach is that the energy profile of the diffracted flux for each d-spacing is nominally independent of its position along the propagation axis making the identification of material parameters easier by virtue of the reduced problem search space. An additional advantage is ...
Therefore, the design and synthesis of talented adsorbents with rapid kinetics, high adsorption uptake capacities, and high selectivity constitute an urgent problem. With the help of outstanding stability, PAF-based frameworks could serve as stable adsorbent materials for the extraction of radioactive ...
While the advent of collision reaction cell (CRC) technology has significantly reduced this problem in quantita- tive ICP-MS, in most cases, it has not benefited semiquant in the same way. This is because semi- quant must be performed with all elements acquired under identical conditions so ...
Addressing interfacial effects during specimen preparation in cryogenic electron microscopy remains challenging. Here we introduce ESI-cryoPrep, a specimen preparation method based on electrospray ionization in native mass spectrometry, designed to allev
The only problem is that the FFT requires a power of two sample size. That is, the FFT can process a sample size of 2, or 4, or 8, or 16; but it cannot process a sample set that is 5, or 14, or 18. Because the preliminary sample size of 416 samples is not a power of two...