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Philip Jamesgers that doctors and patients, young and old, must handle.F.The Covid-19 pandemic and current international circumstances have left many individuals feeling vulnerable, both economically and psychologically. At the same time, pressure is put on healthcare systems, particularly in Europe, resulting随意 发表于 2025-3-25 08:53:12
Einleitungrevolution has been reshaping infectious disease research and management, as rapid advances in geno- associated technologies have changed the very nature of the questions we can ask. Second, the emerging evidence has confirmed that the application of information technologies in healthcare enhances o去才蔑视 发表于 2025-3-25 13:02:22
On the Qualitative Analysis of the Equations of Motion of a Nonholonomic Mechanical System,ch a ball and a disk adjoin to. The equations of motion of the mechanical system in the case of absence of external forces admit two additional first integrals and these are completely integrable. The nonintegrable case, when potential forces act upon the system, is also considered. The qualitativeIRS 发表于 2025-3-25 17:53:47
Semiconductor Lasers,ion of an electromagnetic wave in a waveguide and the laser beam divergence, and waveguide design. We introduced the notion of absorption, spontaneous and stimulated emission, the Einstein coefficients, resonant cavity, population inversion and threshold. The example of the ruby laser was used to ilconfide 发表于 2025-3-25 22:27:56
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Quantum Nondemolition Measurements,tainty principles as Δp ≥ħ(2Δx.).. The period of the gravitational waves is expected to be about 10. s, hence a second measurement of the position should be made after this time. During this period, however, the position uncertainty will grow under free evolution by an amount Δx.(τ) = Δx.(0)+[Δp.(0)τ./m.]. The following inequality then holds