Clinical effect of under the diaphragm by stasis soup combinated with point thread-embedding on infertility patients with obesity-type polycystic ovary syndrome

Objective:To study the clinical effect of under the diaphragm by stasis soup combinated with point thread-embedding on infertility patients with obesity-type polycystic ovary syndrome (PCOS) and evaluate the the rate of ovulation and pregnancy.Method:Selecting 100 infertility patients with obesity-type PCOS, then they were randomly divided into control group (n=80) and observation group (n=80). The control group patients were given metformin+ under the diaphragm by stasis soup, the observation group were given metformin + exenatide + point thread-embedding, they were treated 3 months. Before and after treatment, we observed the changes of body mass index (BMI), waist-to-hipratio (WHR), fasting plasma glucose (FBG), 2-hour postprandial blood glucose (2hPBG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), homeostasis model assessment of insulin resistance (HOMA-IR), fasting plasma insulin (FINS), follicule-stimulating hormone (FSH), luteinizing hormone (LH), LH/FSH, estrogen (E2), and testosterone (T). At last, we assessed the rate of ovulation and pregnancy.Results: After the treatment, the FBG, 2hPBG, TC, LDL-C, TG, BMI, WHR, HOMA-IR, FINS, LH, LH/FSH, E2, and T were lower than before treatment in both groups, and the difference had statistical significance, and the observation group were lower than control group, and the difference had statistical significance;the HDL-C and FSH were higher than before treatment in both groups, and the difference had statistical significance, and the observation group were higher than control group, and the difference had statistical significance. The rate of ovulation and pregnancy in the observation group were higher than control group, and the difference had statistical significance.Conclusions:Under the diaphragm by stasis soup combinated with point thread-embedding can improve the metabolize of carbohydrate and lipid, and the abnormity of sex hormones, through this process, the rate of ovulation and pregnancy can be raised.

Experimental and numerical investigation of the impacts of rotor tip-rake on excitation forces of pump-jet propulsors

The tip-clearance flow in a pump-jet propulsor exerts great impacts on the fluctuating pressures and resultant unsteady forces,which are important sources of structural vibrations and radiated noise underwater.The blade geometry close to the tip is an important factor determining the vortex strength in the tip-clearance flow.In the open-water condition,the effects of raking the rotor tips on the duct-surface fluctuating pressures and the resultant unsteady forces acting on different components of the propulsor are investigated via physical model experiments and the numerical solution of Reynolds-averaged Navier-Stokes(RANS)equations coupled with the SST k-ωturbulence model.The measured and simulated results of hydrodynamic pressures are consistent to each other,and the simulated flows help better understand why the fluctuating pressures change with the tip geometry.The strong fluctuations of duct-surface pressures are caused by intensive tip separation vortices.The duct-surface pressure fluctuations are effectively reduced by using the rake distribution near the tip towards blade back side and,for the combination of the five-bladed rotor and the seven-bladed stator,the resultant unsteady horizontal(and vertical)forces acting on the duct and stator are also reduced;while increasing rake leads to negative effect on pressure fluctuations and unsteady horizontal(and vertical)forces acting on all the components of the propulsor.

RANSE-based simulation and analysis of scale effects on open-water performance of the PPTC-II benchmark propeller

This paper presents our numerical study of the scale effects on a tip-rake propeller,the PPTC-II,based on the RANS simulations using software FLUENT 6.3.The low Re option in SST k-ωmodel is adopted at model scale,together with fine prism grids to resolve the viscous sub-layer.At full scale,standard wall function is adopted.The scale-effect corrections yielded by our RANS simulations are compared with those obtained from the ITTC method.To explain the CFD results,an analysis of sectional forces is performed.To investigate how the tip rake influences propeller scale effects,the geometry of PPTC-II is modified by removing the tip rake only,and the RANS-predicted scale effects for the modified propeller,PPTC-II-m,are compared with those for the PPTC-II.The study indicates that the scale effect on propeller thrust can be as important as that on the torque;somehow the RANS-and ITTC-based predictions for full-scale efficiency agree quite well;the tip-rake reduces tip loading and tip vortex strength,and brings about large differences in the scale effects as compared with the propeller without tip-rake.