Publications by authors named "Ying-Chun Guo"
Purpose: To evaluate the efficacy in suppressing the premature LH surge, embryo quality and pregnancy outcomes of progestin-primed ovarian stimulation (PPOS) protocols using medroxyprogesterone acetate versus utrogestan in women of all ages undergoing in vitro fertilization or intracytoplasmic sperm injection.
Methods: 1188 patients were enrolled in the retrospective study, of which 1002 patients were treated with medroxyprogesterone acetate (M group) and recombinant follicle-stimulating hormone (r-FSH)simultaneously from day 3 of the cycle until trigger day, while 186 patients were treated with utrogestan (U group) and r-FSH instead. Viable embryos were cryopreserved for later transfer in both groups.
[Study on the comet-tail system of 12C16O+ in the near-infrared region].
Guang Pu Xue Yu Guang Pu Fen Xi
August 2005
The molecular cation CO+ is a very important transient molecular radical, and the spectra of the ion has been investigated by numerous researchers. Optical-heterodyne-magnetic-rotation-enhanced velocity modulation spectroscopy(OH-MR-VMS) was employed to measure the comet-tail system (A2 pi(i)-X2 sigma+) of 12C16O+ molecular ion. The vibrational rotation absorption spectra wereobserved in the near-infrared region, including three bands of (0, 3), (1, 4) and (3, 6).
View Article and Find Full Text PDF[Investigation of the (6, 1) and (7, 2) bands in the A 2IIi-X 2sigma+ red system of CN radical].
Guang Pu Xue Yu Guang Pu Fen Xi
January 2005
Article Synopsis
- The CN radical was produced using a Penning discharge from a mix of acetonitrile and helium gases.
- Researchers measured the ro-vibrational spectra of the CN radical from 16,850 to 17,480 cm(-1) and identified 138 lines for the (6, 1) band and 118 lines for the (7, 2) band in the red system.
- They improved the molecular constants and perturbation parameters using a fitting method with high accuracy, as indicated by a standard deviation of less than 0.007 cm(-1).