The detecting rates of peptic ulcer were 13.16%,19.11%, 13.23%,13.55%,20.59%in the tertiary hospitals, secondary hospitals (P< 0.01) urban hospitals suburban hospitals and countryside hospitals respectively(P< 0.01).
A three-stage axial turbine was redesigned by jointly applying S2 flow surface direct problem calculation methods and multistage local optimization methods.
Stabilization of the optimum specific loads of carbon-containing substrates during a three-stage flow cultivation of yeasts in a medium with n-alkanes allowed the throughput of a battery of fermenters to be elevated 1.84-fold.
The time dependences of the nanocrystal size exhibit an intricate three-stage behavior.
The fundamentals of the three-stage teaching of metrology at the Department of Chemistry of Irkutsk State University are considered.
polygenea comprises a three-stage cascade of reproduction: asexual reproduction via budding of the interna; the development of several generations of one or several externae; and several reproduction cycles of each externa.
A three variable three level factorial design approach proposed by Box and Behnken has been used to design the experiment.
With this effective Hamiltonian, we study the steady-state equation and the squeezing spectrum from a cavity field mode interacting with an ensemble of three level "Ξ configuration" atoms by a two-photon transition.
The alkali metal atom is assumed to be three level system, i.e.
Analytical calculations are presented for both the open and closed three level atomic systems, using perturbation theory up to third order in the optical fields.
Both (fermion and boson) subsystems are characterised by the effective three level excitation spectra.