The authors found expanding Universe solutions for the Yang-Mills-Higgs system when it is coupled to the Poincare gauge theory of gravitation. The Yang-Mills fields are of the Wu-Yang-t' Hooft-Julia-Zee configurations. The torsion components for the spacetime are either constant, increasing, or oscillatory, depending on the nature of metric of the Universe.

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The effect of a superstrong magnetic field on neutron stars or white dwarfs is studied for Thomson scattering in a fully ionized collisionless. plasma. The equation of motion for an electron in the presence of both the induced electric field of the plasma and a static uniform external magnetic field is used to determine the acceleration of the electron. The collective plasma effects due to the field and density fluctuations are investigated by using the test-particle picture. The scattering of a photon by a plasma is a function of the acceleration of particles by the electric field of the incident wave and the static external magnetic field Assuming that the electrons are distributed with density the radiation field far from the scattering center is where the delta function indicates that all quantities are to be evaluated at the retarded time and δλ is the angle between the wave vector and the Poynting vector, which is given by

Extended abstractThomson scattering in pulsar magnetospheres has previously been studied by several authors. The most distinguishing feature is the fact that the super-strong magnetic field (B ~ 1012 G) greatly affects the Thomson scattering process, resulting in resonances in the scattering cross-section (Canuto et al. 1971; Herold 1979; Chou 1986; Daugherty and Harding 1986). The important consequences of these cyclotron resonances are the increase in the photon mean free path in the scattering regions, and strongly affecting the angular distribution, and polarisation properties of the scattered photons (Chou 1986; Chou et al. 1989).

Background: Knowledge of the clinical outcome of women with non-gastric gastrointestinal stromal tumors (GISTs) is important for preoperative and postoperative consultation, especially for gynecologic oncologist. The aim of this study is to elucidate the factors affecting the clinical outcome of women with non-gastric GISTs.Methods: Between January 2000 and October 2019, all consecutive women with non-gastric GIST who underwent surgeries in a tertiary referral center were reviewed.Results: Among 26 women with non-gastric GISTs, eight (31%) women had recurrence or metastasis. Common clinical presentations included abdominal pain/fullness (n=12, 46%) and tarry/bloody stool (n=7, 27%). The primary locations of the tumors included the intestines (n=24) and an undetermined origin (n=2). Five (19%) women were initially admitted to the gynecologic department. Twenty-four (92%) patients underwent laparotomic tumor resection, and 2 (8%) patients underwent laparoscopic tumor resection. The probabilities of recurrence-free survival (RFS) at 60 and 120 months were 65.2% and 55.9%, respectively. Death occurred in seven (26.9%) women. The probabilities of overall survival (OS) at 60 and 120 months were 71.1% and 63.9%, respectively. Cancer stage was the only independent predictor for RFS (hazard ratio=6.00, p=0.007) and OS (hazard ratio=3.88, p=0.04). However, excluding cancer stage, metastasis (hazard ratio=8.74 for RFS, 6.03 for OS) and tumor size (hazard ratio=1.20 for OS) were independent predictors. Tumor size ≥ 13.9 cm was the optimum cut-off value to predict death and had an area under the receiver operating characteristic curve of 0.75 (95% confidence interval=0.53 to 0.98).Conclusions: Non-gastric GIST may mimic gynecologic adnexal tumors. In addition to cancer stage, metastasis and tumor size (especially ≥ 13.9 cm for OS) remain independent predictors for RFS and OS in women with non-gastric GIST. The above findings may be used for consultation.Trial registration: ClinicalTrials.gov NCT04256226